阅读说明：本技术 混凝土泵送设备及其控制方法 (Concrete pumping equipment and control method thereof ) 是由 温艳东 于 2020-07-31 设计创作，主要内容包括：本发明涉及一种混凝土泵送设备及其控制方法。混凝土泵送设备包括料斗、输送缸组、第一分配阀、第二分配阀、第一输送管及第二输送管；输送缸组包括均与料斗连通的第一缸体、第二缸体、第三缸体及第四缸体,第一分配阀和第二分配阀均包括驱动组件及位于料斗内的分配管；第一分配阀的驱动组件驱动分配管作切换运动,以具有使第一缸体与第一输送管连通的第一位置和使第二缸体与第一输送管连通的第二位置；第二分配阀的驱动组件驱动分配管作切换运动,以具有使第三缸体与第二输送管连通的第三位置和使第四缸体与第二输送管连通的第四位置。本发明提供的混凝土泵送设备及其控制方法,混凝土泵送设备连续地输出混凝土泥浆,避免混凝土泵送设备振动受损。(The invention relates to concrete pumping equipment and a control method thereof. The concrete pumping equipment comprises a hopper, a conveying cylinder group, a first distribution valve, a second distribution valve, a first conveying pipe and a second conveying pipe; the conveying cylinder group comprises a first cylinder body, a second cylinder body, a third cylinder body and a fourth cylinder body which are communicated with the hopper, and the first distribution valve and the second distribution valve comprise a driving assembly and a distribution pipe positioned in the hopper; the driving assembly of the first distribution valve drives the distribution pipe to perform switching movement so as to have a first position enabling the first cylinder body to be communicated with the first delivery pipe and a second position enabling the second cylinder body to be communicated with the first delivery pipe; the drive assembly of the second dispensing valve drives the dispensing line in a switching movement to have a third position in which the third cylinder communicates with the second delivery pipe and a fourth position in which the fourth cylinder communicates with the second delivery pipe. According to the concrete pumping equipment and the control method thereof, the concrete pumping equipment continuously outputs concrete slurry, so that the concrete pumping equipment is prevented from being damaged by vibration.)

1. The concrete pumping equipment is characterized by comprising a hopper, a conveying cylinder group, a first distribution valve, a second distribution valve, a first conveying pipe and a second conveying pipe;

the hopper is used for storing and stirring concrete slurry, the conveying cylinder group comprises a first cylinder body, a second cylinder body, a third cylinder body and a fourth cylinder body which are communicated with the hopper, the first distribution valve and the second distribution valve respectively comprise a driving assembly and a distribution pipe, the distribution pipe is positioned in the hopper, and the driving assembly is arranged on the hopper;

the driving assembly of the first distribution valve is used for driving the distribution pipe to perform switching movement, and the distribution pipe comprises a first position enabling the first cylinder body to be communicated with the first delivery pipe and a second position enabling the second cylinder body to be communicated with the first delivery pipe in the switching movement process;

the driving assembly of the second distribution valve is used for driving the distribution pipe to perform switching movement, and the distribution pipe comprises a third position enabling the third cylinder body to be communicated with the second delivery pipe and a fourth position enabling the fourth cylinder body to be communicated with the second delivery pipe in the switching movement process.

2. The concrete pumping apparatus according to claim 1, wherein the first cylinder block, the second cylinder block, the third cylinder block, and the fourth cylinder block each have a discharge state in which the concrete slurry is discharged and a suction state in which the concrete slurry is sucked from the hopper;

when the dispensing pipe of the first dispensing valve is in the first position, the first cylinder is in the discharging state, and the second cylinder is in the sucking state;

when the dispensing pipe of the first dispensing valve is in the second position, the second cylinder is in the discharging state, and the first cylinder is in the sucking state;

when the dispensing pipe of the second dispensing valve is in the third position, the third cylinder is in the discharge state, and the fourth cylinder is in the suction state;

when the dispensing pipe of the second dispensing valve is in the fourth position, the fourth cylinder is in the discharge state, and the third cylinder is in the suction state.

3. Concrete pumping plant according to claim 1, characterized in that the first and second distribution valves are S-pipe valves or skirt valves.

4. The concrete pumping equipment according to claim 1, wherein the hopper is provided with a first communication port, a second communication port, a third communication port and a fourth communication port which are respectively communicated with the first cylinder body, the second cylinder body, the third cylinder body and the fourth cylinder body;

the first communicating port, the second communicating port, the third communicating port and the fourth communicating port are arranged in central symmetry.

5. Concrete pumping plant according to claim 1, characterized in that the first and second distribution valves have a first plane of symmetry parallel to the vertical direction; or

The first and second distribution valves have a second plane of symmetry parallel to the horizontal.

6. The concrete pumping apparatus as recited in claim 1, further comprising a converging pipe to which an end of the first delivery pipe remote from the dispensing pipe of the first dispensing valve and an end of the second delivery pipe remote from the dispensing pipe of the second dispensing valve converge and both communicate with the converging pipe;

the concrete pumping equipment also comprises an automatic protection valve, and the automatic protection valve is arranged at the convergence position of the first conveying pipe, the second conveying pipe and the convergence pipe;

the automatic protection valve has a first protection position for communicating the first delivery pipe with the converging pipe and a second protection position for communicating the second delivery pipe with the converging pipe;

when the automatic protection valve is in the first protection position, the pressure value in the first conveying pipe is larger than the pressure value in the second conveying pipe;

when the automatic protection valve is in the second protection position, the pressure value in the second conveying pipe is larger than the pressure value in the first conveying pipe.

7. A control method of concrete pumping equipment according to any one of claims 1 to 6, characterized by comprising the operation steps of:

when the driving component of the first distribution valve drives the distribution pipe to switch between the first position and the second position, controlling the driving component of the second distribution pipe to drive the distribution pipe to be at the third position or the fourth position; and is

Controlling the drive assembly of the second distribution valve to drive the distribution valve in the first position or the second position when the drive assembly of the second distribution valve drives the distribution valve during switching between the third position and the fourth position.

8. The method for controlling the concrete pumping equipment according to claim 7, wherein the first cylinder, the second cylinder, the third cylinder and the fourth cylinder each have a discharging stroke for discharging the concrete slurry, and an X1 position near the end of the discharging stroke and an X2 position at the end of the discharging stroke are sequentially arranged on the discharging stroke, and the operating step specifically comprises the steps of:

1) when the first cylinder is at the X1 position, the driving assembly controlling the second distribution valve drives the distribution pipe to be switched to a third position, the third cylinder is controlled to start discharging concrete grout, and the fourth cylinder is controlled to start sucking concrete grout from the hopper;

2) when the first cylinder is at the X2 position, a driving assembly controlling the first distribution valve drives the distribution pipe to be switched to a second position, and the first cylinder and the second cylinder are controlled to stop working;

3) when the third cylinder is at the X1 position, controlling the second cylinder to start discharging concrete grout, and controlling the first cylinder to start sucking concrete grout from the hopper;

4) when the third cylinder is at the X2 position, the driving assembly of the second distribution valve drives the distribution pipe to be switched to a fourth position, and the third cylinder and the fourth cylinder are controlled to stop working;

5) when the second cylinder is at the X1 position, controlling the fourth cylinder to start discharging concrete grout, and controlling the third cylinder to start sucking concrete grout from the hopper;

6) when the second cylinder body is at the X2 position, a driving assembly controlling the first distribution valve drives the distribution pipe to be switched to a first position, and the first cylinder body and the second cylinder body are controlled to stop working;

7) when the fourth cylinder is at the X1 position, controlling the first cylinder to start discharging concrete grout, and controlling the second cylinder to start sucking concrete grout from the hopper;

8) when the fourth cylinder body is at the X2 position, a driving assembly controlling the second distribution valve drives the distribution pipe to be switched to a third position, and the third cylinder body and the fourth cylinder body are controlled to stop working;

9) repeating steps 1) to 8).

9. The concrete pumping equipment is characterized by comprising a hopper, a conveying cylinder group, a first distribution valve, a second distribution valve, a first conveying pipe and a second conveying pipe;

the hopper is used for storing and stirring concrete slurry, the conveying cylinder group comprises a first cylinder body, a second cylinder body and a third cylinder body which are communicated with the hopper, the first distribution valve and the second distribution valve respectively comprise a driving assembly and a distribution pipe, the distribution pipe is positioned in the hopper, and the driving assembly is arranged on the hopper;

the driving assembly of the first distribution valve is used for driving the distribution pipe to perform switching movement, and the distribution pipe comprises a first position enabling the first cylinder body to be communicated with the first delivery pipe and a second position enabling the second cylinder body to be communicated with the first delivery pipe in the switching movement process;

the driving assembly of the second distribution valve is used for driving the distribution pipe to perform switching movement, and the distribution pipe comprises a third position enabling the third cylinder body to be communicated with the second conveying pipe and a fourth position enabling the distribution pipe to be separated from the third cylinder body in the switching movement process.

10. The concrete pumping apparatus according to claim 9, wherein the first cylinder block, the second cylinder block, and the third cylinder block each have a discharging process of discharging the concrete slurry and a suction state of sucking the concrete slurry from the hopper;

when the distribution pipe of the first distribution valve is at the first position, the first cylinder is in the discharging process, and the second cylinder is in the material sucking state;

when the distribution pipe of the first distribution valve is at the second position, the second cylinder is in the discharging process, and the first cylinder is in the material sucking state;

said third cylinder is in said discharge process when said dispensing tube of said second dispensing valve is in said third position;

when the dispensing pipe of the second dispensing valve is in the fourth position, the third cylinder is in the material suction state.

11. Concrete pumping plant according to claim 9, characterized in that said first and second distribution valves are S-pipe valves or skirt valves.

12. The concrete pumping equipment as claimed in claim 9, wherein the hopper is provided with a first communicating port, a second communicating port and a third communicating port which are respectively communicated with the first cylinder body, the second cylinder body and the third cylinder body;

the first communicating port, the second communicating port and the third communicating port are arranged in central symmetry.

13. Concrete pumping plant according to claim 9, characterized in that the first distribution valve and the second distribution valve have a plane of symmetry parallel to the horizontal direction.

14. The concrete pumping apparatus as claimed in claim 9, further comprising a delivery converging pipe to which an end of the first delivery pipe remote from the delivery pipe of the first distribution valve and an end of the second delivery pipe remote from the delivery pipe of the second distribution valve converge and which are both in communication with the delivery converging pipe;

the concrete pumping equipment also comprises an automatic protection valve, and the automatic protection valve is arranged at the convergence position of the first conveying pipe, the second conveying pipe and the conveying convergence pipe;

the automatic protection valve is provided with a first protection position enabling the first delivery pipe to be communicated with the delivery converging pipe and a second protection position enabling the second delivery pipe to be communicated with the delivery converging pipe;

when the automatic protection valve is in the first protection position, the pressure value in the first conveying pipe is larger than the pressure value in the second conveying pipe;

when the automatic protection valve is in the second protection position, the pressure value in the second conveying pipe is larger than the pressure value in the first conveying pipe.

15. A control method of a concrete pumping equipment according to any one of claims 9 to 14, characterized by comprising the operation steps of:

controlling the drive assembly of the second distribution valve to drive the distribution valve in the third position when the drive assembly of the first distribution valve drives the distribution valve during switching between the first position and the second position.

16. The method for controlling the concrete pumping equipment according to claim 15, wherein the first cylinder block, the second cylinder block and the third cylinder block are all provided with a discharging stroke for discharging concrete slurry, and an X1 position close to the end of the discharging stroke and an X2 position at the end of the discharging stroke are sequentially arranged on the discharging stroke, and the operating step specifically comprises the following steps:

1) when the first cylinder is at the X1 position, a driving assembly controlling the second distribution valve drives the distribution pipe to be switched to a third position, and the third cylinder is controlled to start discharging concrete slurry;

2) when the first cylinder is at the X2 position, a driving assembly controlling the first distribution valve drives the distribution pipe to be switched to a second position, and the first cylinder and the second cylinder are controlled to stop working;

3) when the third cylinder is at the X1 position, controlling the second cylinder to start discharging concrete grout, and controlling the first cylinder to start sucking concrete grout from the hopper;

4) when the third cylinder is at the X2 position, the driving component of the second distribution valve drives the distribution pipe to be switched to a fourth position, and the third cylinder is controlled to start to suck concrete slurry from the hopper;

5) when the second cylinder body is at the X1 position, a driving assembly controlling the second distribution valve drives the distribution pipe to be switched to a third position, and the third cylinder body is controlled to start discharging concrete slurry;

6) when the second cylinder body is at the X2 position, a driving assembly controlling the first distribution valve drives the distribution pipe to be switched to a first position, and the first cylinder body and the second cylinder body are controlled to stop working;

7) when the third cylinder is at the X1 position, the first cylinder is controlled to begin discharging concrete slurry, and the second cylinder 22 is controlled to begin sucking concrete slurry from the hopper;

8) when the third cylinder is at the X2 position, a driving assembly controlling the second distribution valve drives the distribution pipe to be switched to a fourth position, and the third cylinder is controlled to start to suck concrete slurry from the hopper;

9) repeating steps 1) to 8).

Technical Field

The invention relates to the technical field of concrete conveying, in particular to concrete pumping equipment and a control method thereof.

Background

Concrete pumping equipment is one of the currently widely used concrete machines, and generally includes a hopper, a delivery cylinder, a distribution valve, and a delivery pipe.

The hopper is used to store concrete slurry, the delivery cylinder is usually juxtaposed by two cylinders, and the distribution valve is used to frequently switch between the two cylinders so that the two cylinders are alternately in communication with the hopper and the delivery pipe.

However, in each switching process of the distribution valve, intermittent pause exists, and the pause can cause negative pressure and back-buckling force to be generated in the process of feeding the conveying pipe to a high layer, so that the vibration of the conveying pipe or the vibration of the conveying pipe causes resonance, further, the vibration of concrete pumping equipment is large, and the equipment is damaged.

Disclosure of Invention

Therefore, it is necessary to provide a concrete pumping device and a control method thereof capable of reducing the vibration of the delivery pipe caused by the switching of the distributing valve, aiming at the problem that the vibration of the delivery pipe or the resonance caused by the vibration of the delivery pipe due to the intermittent pause of the distributing valve of the existing concrete pumping device in each switching process further causes the vibration of the concrete pumping device to be large and the damage of the device.

In one aspect of the present invention, a concrete pumping device is provided, which includes a hopper, a conveying cylinder group, a first distribution valve, a second distribution valve, a first conveying pipe and a second conveying pipe;

the hopper is used for storing and stirring concrete slurry, the conveying cylinder group comprises a first cylinder body, a second cylinder body, a third cylinder body and a fourth cylinder body which are communicated with the hopper, the first distribution valve and the second distribution valve respectively comprise a driving assembly and a distribution pipe, the distribution pipe is positioned in the hopper, and the driving assembly is arranged on the hopper;

the driving assembly of the first distribution valve is used for driving the distribution pipe to perform switching movement, and the distribution pipe comprises a first position enabling the first cylinder body to be communicated with the first delivery pipe and a second position enabling the second cylinder body to be communicated with the first delivery pipe in the switching movement process;

the driving assembly of the second distribution valve is used for driving the distribution pipe to perform switching movement, and the distribution pipe comprises a third position enabling the third cylinder body to be communicated with the second delivery pipe and a fourth position enabling the fourth cylinder body to be communicated with the second delivery pipe in the switching movement process.

According to the concrete pumping equipment, the conveying cylinder group with the first cylinder body, the second cylinder body, the third cylinder body and the fourth cylinder body is arranged, the first distribution valve is arranged to switch between the first cylinder body and the second cylinder body, and the second distribution valve is arranged to switch between the third cylinder body and the fourth cylinder body, so that the distribution pipes of the second distribution valve are located at positions communicated with the third cylinder body or the fourth cylinder body in the switching process of the first distribution valve, or the distribution pipes of the first distribution valve are located at positions communicated with the first cylinder body or the second cylinder body in the switching process of the second distribution valve, the concrete pumping equipment can continuously output concrete slurry, negative pressure or back-buckling force generated in the process of conveying the conveying pipe to the high-rise concrete layer due to switching pause is avoided, vibration of the conveying pipe is further reduced, and vibration damage of the concrete pumping equipment is avoided.

In one embodiment, the first cylinder, the second cylinder, the third cylinder, and the fourth cylinder each have a discharge state in which the concrete slurry is discharged and a suction state in which the concrete slurry is sucked from the hopper;

when the dispensing pipe of the first dispensing valve is in the first position, the first cylinder is in the discharging state, and the second cylinder is in the sucking state;

when the dispensing pipe of the first dispensing valve is in the second position, the second cylinder is in the discharging state, and the first cylinder is in the sucking state;

when the dispensing pipe of the second dispensing valve is in the third position, the third cylinder is in the discharge state, and the fourth cylinder is in the suction state;

when the dispensing pipe of the second dispensing valve is in the fourth position, the fourth cylinder is in the discharge state, and the third cylinder is in the suction state.

In one embodiment, the first and second dispensing valves are S-pipe valves or skirt valves.

In one embodiment, the hopper is provided with a first communication port, a second communication port, a third communication port and a fourth communication port which are respectively communicated with the first cylinder, the second cylinder, the third cylinder and the fourth cylinder;

the first communicating port, the second communicating port, the third communicating port and the fourth communicating port are arranged in central symmetry.

In one embodiment, the first and second distribution valves have a first plane of symmetry parallel to the vertical direction; or

The first and second distribution valves have a second plane of symmetry parallel to the horizontal.

In one embodiment, the concrete pumping equipment further comprises a converging pipe, wherein one end of the first conveying pipe, away from the distribution pipe of the first distribution valve, and one end of the second conveying pipe, away from the distribution pipe of the second distribution valve, converge to one end of the converging pipe, and both are communicated with the converging pipe;

the concrete pumping equipment also comprises an automatic protection valve, and the automatic protection valve is arranged at the convergence position of the first conveying pipe, the second conveying pipe and the convergence pipe;

the automatic protection valve has a first protection position enabling the first delivery pipe to communicate with the converging pipe and a second protection position enabling the second delivery pipe to communicate with the converging pipe.

In another aspect of the present invention, a method for controlling the concrete pumping device is further provided, which includes the following steps:

when the driving component of the first distribution valve drives the distribution pipe to switch between the first position and the second position, controlling the driving component of the second distribution pipe to drive the distribution pipe to be at the third position or the fourth position; and is

Controlling the drive assembly of the second distribution valve to drive the distribution valve in the first position or the second position when the drive assembly of the second distribution valve drives the distribution valve during switching between the third position and the fourth position.

In one embodiment, the first cylinder, the second cylinder, the third cylinder and the fourth cylinder each have a discharging stroke for discharging the concrete slurry, and the discharging stroke is sequentially provided with an X1 position close to the end of the discharging stroke and an X2 position at the end of the discharging stroke, and the operating step specifically includes the steps of:

1) when the first cylinder is at the X1 position, the driving assembly controlling the second distribution valve drives the distribution pipe to be switched to a third position, the third cylinder is controlled to start discharging concrete grout, and the fourth cylinder is controlled to start sucking concrete grout from the hopper;

2) when the first cylinder is at the X2 position, a driving assembly controlling the first distribution valve drives the distribution pipe to be switched to a second position, and the first cylinder and the second cylinder are controlled to stop working;

3) when the third cylinder is at the X1 position, controlling the second cylinder to start discharging concrete grout, and controlling the first cylinder to start sucking concrete grout from the hopper;

4) when the third cylinder is at the X2 position, the driving assembly of the second distribution valve drives the distribution pipe to be switched to a fourth position, and the third cylinder and the fourth cylinder are controlled to stop working;

5) when the second cylinder is at the X1 position, controlling the fourth cylinder to start discharging concrete grout, and controlling the third cylinder to start sucking concrete grout from the hopper;

6) when the second cylinder body is at the X2 position, a driving assembly controlling the first distribution valve drives the distribution pipe to be switched to a first position, and the first cylinder body and the second cylinder body are controlled to stop working;

7) when the fourth cylinder is at the X1 position, controlling the first cylinder to start discharging concrete grout, and controlling the second cylinder to start sucking concrete grout from the hopper;

8) when the fourth cylinder body is at the X2 position, a driving assembly controlling the second distribution valve drives the distribution pipe to be switched to a third position, and the third cylinder body and the fourth cylinder body are controlled to stop working;

9) repeating steps 1) to 8).

In another aspect of the present invention, a concrete pumping device is also provided, which includes a hopper, a conveying cylinder set, a first distributing valve, a second distributing valve, a first conveying pipe and a second conveying pipe;

the hopper is used for storing and stirring concrete slurry, the conveying cylinder group comprises a first cylinder body, a second cylinder body and a third cylinder body which are communicated with the hopper, the first distribution valve and the second distribution valve respectively comprise a driving assembly and a distribution pipe, the distribution pipe is positioned in the hopper, and the driving assembly is arranged on the hopper;

the driving assembly of the first distribution valve is used for driving the distribution pipe to perform switching movement, and the distribution pipe comprises a first position enabling the first cylinder body to be communicated with the first delivery pipe and a second position enabling the second cylinder body to be communicated with the first delivery pipe in the switching movement process;

the driving assembly of the second distribution valve is used for driving the distribution pipe to perform switching movement, and the distribution pipe comprises a third position enabling the third cylinder body to be communicated with the second conveying pipe and a fourth position enabling the distribution pipe to be separated from the third cylinder body in the switching movement process.

According to the concrete pumping equipment, the conveying cylinder group with the first cylinder body, the second cylinder body and the third cylinder body is arranged, the first distribution valve is arranged to switch between the first cylinder body and the second cylinder body, and the second distribution valve can be switched to the third cylinder body, so that the distribution pipe of the second distribution valve is located at a position communicated with the third cylinder body in the switching process of the first distribution valve, the concrete pumping equipment can continuously output concrete slurry, negative pressure or back-buckling force generated in the feeding process of the conveying pipe to a high layer due to switching pause is avoided, vibration of the conveying pipe is reduced, and vibration damage of the concrete pumping equipment is avoided.

In one embodiment, the first cylinder, the second cylinder and the third cylinder each have a discharge process for discharging the concrete slurry and a suction state for sucking the concrete slurry from the hopper;

when the distribution pipe of the first distribution valve is at the first position, the first cylinder is in the discharging process, and the second cylinder is in the material sucking state;

when the distribution pipe of the first distribution valve is at the second position, the second cylinder is in the discharging process, and the first cylinder is in the material sucking state;

said third cylinder is in said discharge process when said dispensing tube of said second dispensing valve is in said third position;

when the dispensing pipe of the second dispensing valve is in the fourth position, the third cylinder is in the material suction state.

In one embodiment, the first and second dispensing valves are S-pipe valves or skirt valves.

In one embodiment, the hopper is provided with a first communication port, a second communication port and a third communication port which are respectively communicated with the first cylinder, the second cylinder and the third cylinder;

the first communicating port, the second communicating port and the third communicating port are arranged in central symmetry.

In one embodiment, the first and second distribution valves have a plane of symmetry parallel to the horizontal direction.

In one embodiment, the concrete pumping equipment further comprises a conveying converging pipe, wherein one end of the first conveying pipe, far away from the distribution pipe of the first distribution valve, and one end of the second conveying pipe, far away from the distribution pipe of the second distribution valve, converge to one end of the conveying converging pipe, and are communicated with the conveying converging pipe;

the concrete pumping equipment also comprises an automatic protection valve, and the automatic protection valve is arranged at the convergence position of the first conveying pipe, the second conveying pipe and the conveying convergence pipe;

the automatic protection valve has a first protection position enabling the first delivery pipe to be communicated with the delivery converging pipe and a second protection position enabling the second delivery pipe to be communicated with the delivery converging pipe.

In another aspect of the present invention, a method for controlling the concrete pumping device includes:

controlling the drive assembly of the second distribution valve to drive the distribution valve in the third position when the drive assembly of the first distribution valve drives the distribution valve during switching between the first position and the second position.

In one embodiment, the first cylinder, the second cylinder and the third cylinder each have a discharge stroke for discharging concrete slurry, and the discharge stroke is sequentially provided with an X1 position close to the end of the discharge stroke and an X2 position at the end of the discharge stroke, and the operating step specifically includes the steps of:

1) when the first cylinder is at the X1 position, a driving assembly controlling the second distribution valve drives the distribution pipe to be switched to a third position, and the third cylinder is controlled to start discharging concrete slurry;

2) when the first cylinder is at the X2 position, a driving assembly controlling the first distribution valve drives the distribution pipe to be switched to a second position, and the first cylinder and the second cylinder are controlled to stop working;

3) when the third cylinder is at the X1 position, controlling the second cylinder to start discharging concrete grout, and controlling the first cylinder to start sucking concrete grout from the hopper;

4) when the third cylinder is at the X2 position, the driving component of the second distribution valve drives the distribution pipe to be switched to a fourth position, and the third cylinder is controlled to start to suck concrete slurry from the hopper;

5) when the second cylinder body is at the X1 position, a driving assembly controlling the second distribution valve drives the distribution pipe to be switched to a third position, and the third cylinder body is controlled to start discharging concrete slurry;

6) when the second cylinder body is at the X2 position, a driving assembly controlling the first distribution valve drives the distribution pipe to be switched to a first position, and the first cylinder body and the second cylinder body are controlled to stop working;

7) when the third cylinder is at the X1 position, the first cylinder is controlled to begin discharging concrete slurry, and the second cylinder 22 is controlled to begin sucking concrete slurry from the hopper;

8) when the third cylinder is at the X2 position, a driving assembly controlling the second distribution valve drives the distribution pipe to be switched to a fourth position, and the third cylinder is controlled to start to suck concrete slurry from the hopper;

9): repeating steps 1) to 8).

Drawings

Fig. 1 is a schematic structural view of concrete pumping equipment in an embodiment of the present invention;

fig. 2 is a rear view schematically illustrating a structure of a hopper of the concrete pumping apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic front view of the hopper of the concrete pumping apparatus shown in FIG. 2;

FIG. 4 is a schematic sectional view illustrating a hopper of the concrete pumping apparatus shown in FIG. 2;

fig. 5 is a rear view schematically showing the construction of a hopper of the concrete pumping apparatus according to another embodiment of the present invention;

FIG. 6 is a schematic front view of the hopper of the concrete pumping apparatus shown in FIG. 5;

FIG. 7 is a schematic sectional view illustrating the hopper of the concrete pumping apparatus shown in FIG. 5;

fig. 8 is a schematic structural view of a part of the structure of concrete pumping equipment in one embodiment of the present invention;

fig. 9 (a) to (h) are schematic exploded structural diagrams of steps of a control method of a concrete pumping device according to an embodiment of the present invention;

fig. 10 is a rear view schematically showing the construction of a hopper of a concrete pumping apparatus according to still another embodiment of the present invention;

fig. 11 is a sectional view schematically illustrating the hopper of the concrete pumping apparatus shown in fig. 10;

fig. 12 is a schematic structural view of a part of the structure of concrete pumping equipment in one embodiment of the present invention;

fig. 13 (a) to (h) are schematic exploded views of steps of a control method for a concrete pumping device according to still another embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Furthermore, the drawings are not 1: 1, and the relative dimensions of the various elements in the figures are drawn for illustration only and not necessarily to true scale.

Fig. 1 is a schematic structural view showing concrete pumping equipment according to an embodiment of the present invention; fig. 2 is a rear view schematically illustrating a structure of a hopper of the concrete pumping apparatus according to an embodiment of the present invention; FIG. 3 is a schematic front view of the hopper of the concrete pumping apparatus shown in FIG. 2; fig. 4 is a schematic sectional view illustrating a hopper of the concrete pumping apparatus shown in fig. 2. For the purpose of illustration, the drawings show only the structures associated with embodiments of the invention.

Referring to the drawings, an embodiment of the present invention provides a concrete pumping apparatus 100 including a hopper 10, a cylinder group 20, a first distribution valve 30, a second distribution valve 40, a first delivery pipe 50, and a second delivery pipe 60.

The hopper 10 is used for storing and stirring concrete slurry, the conveying cylinder group 20 comprises a first cylinder 21, a second cylinder 22, a third cylinder 23 and a fourth cylinder 24 which are all communicated with the hopper 10, the first distribution valve 30 and the second distribution valve 40 both comprise a driving assembly and a distribution pipe, the distribution pipe is positioned in the hopper 10, and the driving assembly is installed on the hopper 10. Specifically, a stirring structure is further provided in the hopper 10, and the stirring structure is located above the first distribution valve 30 and the second distribution valve 40 in the vertical direction so as not to interfere with the stirring structure during the switching movement of the first distribution valve 30 and the second distribution valve 40, and specifically, the stirring structure includes a stirring rotation shaft and a stirring blade.

The driving assembly of the first dispensing valve 30 is adapted to drive a dispensing line in a switching movement, which dispensing line during the switching movement comprises a first position in which the first cylinder 21 communicates with the first delivery duct 50 and a second position in which the second cylinder 22 communicates with the first delivery duct 50.

The drive assembly of the second distribution valve 40 is adapted to drive a switching movement of the distribution pipe, which during the switching movement comprises a third position in which the third cylinder 23 communicates with the second delivery pipe 60 and a fourth position in which the fourth cylinder 24 communicates with the second delivery pipe 60.

It should be understood that the first, second, third and fourth cylinders 21, 22, 23 and 24 each have a discharge state in which concrete slurry is discharged and a suction state in which concrete slurry is sucked from the hopper 10. When the dispensing pipe of the first dispensing valve 30 is in the first position, the first cylinder 21 is in the discharge state and the second cylinder 22 is in the suction state, when the dispensing pipe of the first dispensing valve 30 is in the second position, the second cylinder 22 is in the discharge state and the first cylinder 21 is in the suction state, when the dispensing pipe of the second dispensing valve 40 is in the third position, the third cylinder 23 is in the discharge state and the fourth cylinder 24 is in the suction state, when the dispensing pipe of the second dispensing valve 40 is in the fourth position, the fourth cylinder 24 is in the discharge state and the third cylinder 23 is in the suction state.

Specifically, each of the first, second, third, and fourth cylinders 21, 22, 23, and 24 has a cylinder and a piston, and the piston reciprocates within the cylinder to cause the first, second, third, and fourth cylinders 21, 22, 23, and 24 to have a discharge state and a suction state.

By providing the transfer cylinder group 20 having the first cylinder 21, the second cylinder 22, the third cylinder 23, and the fourth cylinder 24 in this manner, and is switched between the first cylinder 21 and the second cylinder 22 by providing the first distribution valve 30, the second distribution valve 40 is switched between the third cylinder 23 and the fourth cylinder 24, to coordinate, during the switching of the first distribution valve 30, the distribution pipe of the second distribution valve 40 in a position communicating with the third cylinder 23 or the fourth cylinder 24, or, during the switching of the second distribution valve 40, the distribution pipe of the first distribution valve 30 is brought into a position to communicate with the first cylinder 21 or the second cylinder 22, therefore, the concrete pumping equipment 100 can continuously output concrete slurry, negative pressure or back-buckling force generated in the process of feeding the conveying pipe to a high layer due to switching pause is avoided, vibration of the conveying pipe is reduced, and vibration damage of the concrete pumping equipment 100 is avoided.

In order to clearly show the structure of the present invention, the dispensing pipe of the first dispensing valve 30 is named as a first dispensing pipe 31, and the dispensing pipe of the second dispensing valve 40 is named as a second dispensing pipe 41.

In some embodiments, the concrete pumping device 100 may be any one of a concrete delivery pump, a truck mounted pump, a boom pump truck, a wet sprayer, or a mine mercury-filled series concrete delivery device, which is not limited herein.

In some embodiments, the hopper 10 is provided with a first communication port, a second communication port, a third communication port, and a fourth communication port that are respectively communicated with the first cylinder 21, the second cylinder 22, the third cylinder 23, and the fourth cylinder 24, and the first communication port, the second communication port, the third communication port, and the fourth communication port are arranged in a central symmetry manner. On the one hand, this arrangement makes it possible to equalize the stress applied to the hopper 10 when the first cylinder 21, the second cylinder 22, the third cylinder 23, and the fourth cylinder 24 discharge or suck the material through the first communication port, the second communication port, the third communication port, and the fourth communication port, respectively, and on the other hand, makes it possible to make the arrangement positions of the delivery cylinder group 20, the first distribution valve 30, and the second distribution valve 40 on the hopper 10 more compact.

In some embodiments, the hopper 10 is opened with a fifth communication port and a sixth communication port communicating with the first conveying pipe 50 and the second conveying pipe 60, respectively, and the fifth communication port and the sixth communication port are disposed opposite to the first communication port, the second communication port, the third communication port, and the fourth communication port.

Referring again to fig. 2, in some embodiments, the first distribution valve 30 and the second distribution valve 40 have a first plane of symmetry parallel to the vertical direction.

As shown in fig. 5 to 7, a concrete pumping device 100 according to another embodiment of the present invention is provided, in which the first distribution valve 30 and the second distribution valve 40 have a second symmetrical plane parallel to the horizontal direction. In this way, the first and second distribution valves 30 and 40 can be uniformly arranged on the hopper 10, and the hopper 10 can be uniformly stressed, and the operation of the first and second distribution valves 30 and 40 is more stable.

In some embodiments, the driving assemblies each have a driving member and a rotating shaft, the rotating shaft is connected to the dispensing tube, and the driving member is used for driving the rotating shaft to rotate so as to drive the dispensing valve to perform the switching movement. Specifically, the distribution pipe is disposed offset from the axis of the rotating shaft. In order to clearly show the structure of the present invention, the rotation shaft of the first distribution valve 30 is named as a first rotation shaft 32, and the rotation shaft of the second distribution valve 40 is named as a second rotation shaft 42.

In some embodiments, the first and second dispensing valves 30, 40 are S-pipe valves or skirt valves. The structure of S-pipe valves or skirt valves is well known to those skilled in the art and will not be described in detail herein. The S pipe valve or the skirt valve is simple in structure and can stably run in the switching process.

Taking the first distribution valve 30 as an S-pipe valve as an example, the S-pipe valve includes a feeding port and a discharging port, and during switching of the S-pipe valve, the feeding port of the S-pipe valve is communicated with the first communication port or the second communication port, and the discharging port is always communicated with the fifth communication port.

As shown in fig. 8, in some embodiments, the concrete pumping device 100 further includes a converging pipe 70, an end of the first delivery pipe 50 away from the dispensing pipe of the first dispensing valve 30 and an end of the second delivery pipe 60 away from the dispensing pipe of the second dispensing valve 40 converge to an end of the converging pipe 70, and both communicate with the converging pipe 70, the concrete pumping device 100 further includes an automatic protection valve 80, the automatic protection valve 80 is disposed at a convergence of the first delivery pipe 50, the second delivery pipe 60 and the converging pipe 70, and the automatic protection valve 80 has a first protection position for communicating the first delivery pipe 50 with the converging pipe 70 and a second protection position for communicating the second delivery pipe 60 with the converging pipe 70. The pressure value inside the first duct 50 is greater than the pressure value inside the second duct 60 when the automatic protection valve 80 is in said first protection position, and the pressure value inside the second duct 60 is greater than the pressure value inside the first duct 50 when the automatic protection valve 80 is in the second protection position.

Based on the same inventive concept, the invention also provides a control method of the concrete pumping equipment, which comprises the following operation steps:

the drive assembly controlling the second dispensing valve 40 drives the dispensing line in the third position or the fourth position when the drive assembly of the first dispensing valve 30 drives the dispensing line during the switching between the first position and the second position, and the drive assembly controlling the first dispensing valve 30 drives the dispensing line in the first position or the second position when the drive assembly of the second dispensing valve 40 drives the dispensing line during the switching between the third position and the fourth position.

Specifically, in one embodiment, as shown in fig. 9 (a) to (h), the first cylinder 21, the second cylinder 22, the third cylinder 23, and the fourth cylinder 24 all have a discharging stroke for discharging concrete slurry, and an X1 position near the end of the discharging stroke and an X2 position at the end of the discharging stroke are sequentially set on the discharging stroke, and the operation steps specifically include the steps of:

s110: when the first cylinder 21 is at the X1 position, the driving assembly controlling the second distribution valve 40 drives the distribution pipe to switch to the third position, the third cylinder 23 is controlled to start discharging concrete grout, and the fourth cylinder 24 is controlled to start sucking concrete grout from the hopper 10;

s120: when the first cylinder 21 is at the position X2, the driving assembly controlling the first distribution valve 30 drives the distribution pipe to switch to the second position, and the first cylinder 21 and the second cylinder 22 are controlled to stop working;

s130: when the third cylinder 23 is at the position X1, the second cylinder 22 is controlled to start discharging concrete slurry, and the first cylinder 21 is controlled to start sucking concrete slurry from the hopper 10;

s140: when the third cylinder 23 is at the X2 position, the driving assembly of the second distribution valve 40 drives the distribution pipe to switch to the fourth position, and controls the third cylinder 23 and the fourth cylinder 24 to stop working;

s150: when the second cylinder 22 is at the position X1, the fourth cylinder 24 is controlled to start discharging concrete grout, and the third cylinder 23 is controlled to start sucking concrete grout from the hopper 10;

s160: when the second cylinder 22 is at the position X2, the driving assembly controlling the first distribution valve 30 drives the distribution pipe to switch to the first position, and the first cylinder 21 and the second cylinder 22 are controlled to stop working;

s170: when the fourth cylinder 24 is at the position X1, the first cylinder 21 is controlled to start discharging concrete grout, and the second cylinder 22 is controlled to start sucking concrete grout from the hopper 10;

s180: when the fourth cylinder 24 is at the X2 position, the driving assembly controlling the second distribution valve 40 drives the distribution pipe to switch to the third position, and the third cylinder 23 and the fourth cylinder 24 are controlled to stop working.

S190: and repeating the steps S110 to S180.

As shown in fig. 10 and 11, based on the same inventive concept, the present invention also provides a concrete pumping apparatus 200, which includes a hopper 210, a delivery cylinder group 220, a first distribution valve 230, a second distribution valve 230, a first delivery pipe 240, and a second delivery pipe 250.

The hopper 210 is used for storing and stirring concrete slurry, the delivery cylinder group 220 includes a first cylinder 221, a second cylinder 222, and a third cylinder 223, all of which are communicated with the hopper 210, and the first distribution valve 230 and the second distribution valve 240 each include a driving assembly and a distribution pipe, the distribution pipe is located in the hopper 210, and the driving assembly is installed to the hopper 210. Specifically, a stirring structure is further disposed in the hopper 210, and the stirring structure is located above the first distribution valve 230 and the second distribution valve 240 in the vertical direction so as not to interfere with the stirring structure during the switching movement of the first distribution valve 230 and the second distribution valve 240, and specifically, the stirring structure includes a stirring rotation shaft and a stirring blade.

The drive assembly of the first dispensing valve 230 is adapted to drive a dispensing line in a switching movement, which dispensing line during the switching movement comprises a first position in which the first cylinder 221 is in communication with the first delivery duct 250 and a second position in which the second cylinder 222 is in communication with the first delivery duct 250.

The drive assembly of the second dispensing valve 240 is adapted to drive a dispensing line in a switching movement, which dispensing line during the switching movement comprises a third position in which the third cylinder 223 is in communication with the second delivery pipe 260 and a fourth position in which the dispensing line is separated from the third cylinder 223.

It should be understood that the first cylinder 221, the second cylinder 222, and the third cylinder 223 each have a discharge state in which concrete slurry is discharged and a suction state in which concrete slurry is sucked from the hopper 210. When the dispensing pipe of the first dispensing valve 230 is in the first position, the first cylinder 221 is in the discharge state and the second cylinder 222 is in the suction state, when the dispensing pipe of the first dispensing valve 230 is in the second position, the second cylinder 222 is in the discharge state and the first cylinder 221 is in the suction state, when the dispensing pipe of the second dispensing valve 240 is in the third position, the third cylinder 223 is in the discharge state, and when the dispensing pipe of the second dispensing valve 240 is in the fourth position, the third cylinder 223 is in the suction state.

Specifically, each of the first cylinder 221, the second cylinder 222, and the third cylinder 223 has a cylinder and a piston, and the piston reciprocates within the cylinder to cause the first cylinder 221, the second cylinder 222, and the third cylinder 23 to have a discharge state and a suction state.

In this way, by providing the delivery cylinder set 220 having the first cylinder 221, the second cylinder 222 and the third cylinder 223, and by providing the first distribution valve 230 to switch between the first cylinder 221 and the second cylinder 222, the second distribution valve 240 can be switched to the third cylinder 223, so as to coordinate that the distribution pipe of the second distribution valve 240 is in a position communicated with the third cylinder 223 during the switching process of the first distribution valve 230, so that the concrete pumping equipment 200 can continuously output concrete slurry, thereby avoiding negative pressure or back-pressure generated during the delivery process of the delivery pipe to the upper layer due to the switching pause, further reducing the vibration of the delivery pipe, and avoiding the vibration damage of the concrete pumping equipment 200.

In order to clearly show the structure of the present invention, the dispensing pipe of the first dispensing valve 230 is named as a first dispensing pipe 231, and the dispensing pipe of the second dispensing valve 240 is named as a second dispensing pipe 241.

In some embodiments, the concrete pumping device 100 may be any one of a concrete delivery pump, a truck mounted pump, a boom pump truck, a wet sprayer, or a mine mercury-filled series concrete delivery device, which is not limited herein.

In some embodiments, the hopper 210 has a first communication port, a second communication port, and a third communication port that are respectively communicated with the first cylinder 221, the second cylinder 222, and the third cylinder 223, and the first communication port, the second communication port, and the third communication port are arranged in a central symmetry. On the one hand, this arrangement makes it possible to equalize the stress applied to the hopper 210 when the first cylinder 221, the second cylinder 222, and the third cylinder 23 of 2 discharge or suck the material through the first communication port, the second communication port, and the third communication port, respectively, and on the other hand, makes it possible to make the arrangement positions of the delivery cylinder group 20, the first distribution valve 230, and the second distribution valve 240 on the hopper 210 more compact.

In some embodiments, the hopper 210 is opened with a fifth communication port and a sixth communication port communicating with the first conveying pipe 250 and the second conveying pipe 260, respectively, and the fifth communication port and the sixth communication port are disposed opposite to the first communication port, the second communication port, and the third communication port.

In some embodiments, the first and second distribution valves 230 and 240 have planes of symmetry parallel to the horizontal direction. In this way, the first and second distribution valves 230 and 240 can be uniformly arranged on the hopper 210, and the hopper 210 can be uniformly stressed, and the first and second distribution valves 230 and 240 can be more stably operated.

In some embodiments, the driving assemblies each have a driving member and a rotating shaft, the rotating shaft is connected to the dispensing tube, and the driving member is used for driving the rotating shaft to rotate so as to drive the dispensing valve to perform the switching movement. Specifically, the distribution pipe is disposed offset from the axis of the rotating shaft. To clearly illustrate the structure of the present invention, the rotating shaft of the first distribution valve 230 is named a first rotating shaft 232, and the rotating shaft of the second distribution valve 240 is named a second rotating shaft 242.

In some embodiments, the first and second dispense valves 230, 240 are S-pipe valves or skirt valves. The structure of S-pipe valves or skirt valves is well known to those skilled in the art and will not be described in detail herein. The S pipe valve or the skirt valve is simple in structure and can stably run in the switching process.

Taking the first distribution valve 30 as an S-pipe valve as an example, the S-pipe valve includes a feeding port and a discharging port, and during switching of the S-pipe valve, the feeding port of the S-pipe valve is communicated with the first communication port or the second communication port, and the discharging port is always communicated with the fifth communication port.

As shown in fig. 12, in some embodiments, the concrete pumping device 100 further includes a converging pipe 270, an end of the first delivery pipe 250, which is away from the dispensing pipe of the first dispensing valve 230, and an end of the second delivery pipe 260, which is away from the dispensing pipe of the second dispensing valve 240, converge to an end of the converging pipe 270, and both communicate with the converging pipe 270, the concrete pumping device 200 further includes an automatic protection valve 280, the automatic protection valve 280 is disposed at a convergence of the first delivery pipe 250, the second delivery pipe 260, and the converging pipe 270, and the automatic protection valve 280 has a first protection position for communicating the first delivery pipe 250 with the converging pipe 270 and a second protection position for communicating the second delivery pipe 260 with the converging pipe 270. The pressure value inside the first delivery duct 250 is greater than the pressure value inside the second delivery duct 260 when the automatic protection valve 280 is in said first protection position, and the pressure value inside the second delivery duct 260 is greater than the pressure value inside the first delivery duct 250 when the automatic protection valve 280 is in the second protection position.

Based on the same inventive concept, the invention also provides a control method of the concrete pumping equipment, which comprises the following operation steps:

the drive assembly controlling the second dispensing valve 240 drives the dispensing line in the third position when the drive assembly of the first dispensing valve 230 drives the dispensing line during the switching between the first and second positions.

Specifically, in one embodiment, as shown in fig. 13 (a) to (h), the first cylinder 221, the second cylinder 222, and the third cylinder 223 have a discharging stroke for discharging concrete slurry, and an X1 position near a discharging formation end and an X2 position at a discharging stroke end are sequentially provided on the discharging stroke, and the operation step specifically includes the steps of:

s210: when the first cylinder 221 is at the X1 position, the driving assembly controlling the second dispensing valve 240 drives the dispensing pipe to switch to the third position, and the third cylinder 223 is controlled to start discharging concrete slurry;

s220: when the first cylinder 221 is at the X2 position, the driving assembly controlling the first distribution valve 230 drives the distribution pipe to switch to the second position, and the first cylinder 221 and the second cylinder 222 are controlled to stop working;

s230: when the third cylinder 223 is at the X1 position, the second cylinder 222 is controlled to start discharging concrete slurry, and the first cylinder 221 is controlled to start sucking concrete slurry from the hopper 210;

s240: when the third cylinder 223 is at the X2 position, the driving assembly of the second dispensing valve 240 drives the dispensing pipe to switch to the fourth position, controlling the third cylinder 223 to start sucking concrete slurry from the hopper 210;

s250: when the second cylinder 222 is at the X1 position, the driving assembly controlling the second dispensing valve 240 drives the dispensing pipe to switch to the third position, and the third cylinder 223 is controlled to start discharging concrete slurry;

s260: when the second cylinder 222 is at the X2 position, the driving assembly controlling the first distribution valve 230 drives the distribution pipe to switch to the first position, and controls the first cylinder 221 and the second cylinder 222 to stop working;

s270: when the third cylinder 223 is at the X1 position, the first cylinder 221 is controlled to start discharging concrete slurry, and the second cylinder 22 is controlled to start sucking concrete slurry from the hopper 210;

s280: when the third cylinder 223 is in the X2 position, the driving assembly controlling the second dispensing valve 240 drives the dispensing pipe to switch to the fourth position, controlling the third cylinder 223 to begin drawing concrete slurry from the hopper 210.

S290: steps S210 to S280 are repeated.

The concrete pumping equipment (100, 200) and the control method thereof provided by the embodiment of the invention have the following beneficial effects:

by providing the delivery cylinder group 20 having the first cylinder (21, 221), the second cylinder (22, 222), the third cylinder (23, 223) and the fourth cylinder 24 or no fourth cylinder 24, and by providing the first distribution valve (30, 230) to switch between the first cylinder (21, 221) and the second cylinder (22, 222), the second distribution valve (40, 240) to switch between the third cylinder 23 and the fourth cylinder 24 or only the third cylinder 223, in coordination with the distribution pipe of the second distribution valve (40, 240) being in a position to communicate with the third cylinder 23 or the fourth cylinder 24 or only the third cylinder 223 during the switching of the first distribution valve (30, 230), or the distribution pipe of the first distribution valve (30, 230) being in a position to communicate with the first cylinder (21, 221) or the second cylinder (22, 222) during the switching of the second distribution valve (40, 240), therefore, the concrete pumping equipment (100, 200) can continuously output concrete slurry, negative pressure or back-buckling force generated in the process of feeding the conveying pipe to a high layer due to switching pause is avoided, vibration of the conveying pipe is reduced, and vibration damage of the concrete pumping equipment (100, 200) is avoided.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.