阅读说明：本技术 一种平衡阀阀组及加热墙液压升降系统和加热机 (Balance valve group, heating wall hydraulic lifting system and heater ) 是由 韩记生 张青国 王勇 杨伦磊 张陈 王贵 许刘奎 于 2019-11-08 设计创作，主要内容包括：本发明公开了一种平衡阀阀组及加热墙液压升降系统和加热机,平衡阀阀组包括同向型平衡阀、液控单向阀、分流集流阀；平衡阀阀组设置有V1口、V2口、C1口以及n个C2口；n为大于1的偶数；平衡阀阀组的V1口经过液控单向阀与C1口连接；C1口用于与油缸的无杆腔连接；平衡阀阀组的V2口经过分流集流阀后分成n路,每路均通过一同向型平衡阀与一C2口连接,C2口用于与油缸的有杆腔连接。每个C2口均连接设置有蓄能器。溢流阀连接在平衡阀阀组的V1口。实现了对多个油缸的同步性、定位间隙均匀性及位置保持。(The invention discloses a balance valve bank, a heating wall hydraulic lifting system and a heater, wherein the balance valve bank comprises a homodromous balance valve, a hydraulic control one-way valve and a flow distributing and collecting valve; the balance valve group is provided with a V1 port, a V2 port, a C1 port and n C2 ports; n is an even number greater than 1; a V1 port of the balance valve group is connected with a C1 port through a hydraulic control one-way valve; the port C1 is used for connecting with a rodless cavity of the oil cylinder; the V2 port of the balance valve group is divided into n paths after passing through the flow distributing and collecting valve, each path is connected with a C2 port through a homodromous balance valve, and the C2 port is used for being connected with a rod cavity of the oil cylinder. And each port C2 is connected with an energy accumulator. The overflow valve is connected with a V1 port of the balanced valve group. The synchronization, the positioning clearance uniformity and the position maintenance of a plurality of oil cylinders are realized.)

1. A balanced valve bank is characterized by comprising a homodromous balanced valve (2.1), a hydraulic control one-way valve (2.2) and a flow distributing and collecting valve (2.3);

the balance valve group (2) is provided with a V1 port, a V2 port, a C1 port and n C2 ports; n is an even number greater than 1;

a V1 port of the balance valve group (2) is connected with a C1 port through a hydraulic control one-way valve (2.2); the port C1 is used for being connected with a rodless cavity of the oil cylinder (1);

the V2 mouth of balanced valve valves (2) divides into n way behind flow distribution collecting valve (2.3), and every way all is connected with a C2 mouth through a syntropy type balanced valve (2.1), and C2 mouth is used for being connected with the pole chamber of hydro-cylinder (1).

2. The balanced valve assembly according to claim 1, characterized by further comprising an overflow valve (2.4), the overflow valve (2.4) being connected at the V1 port of the balanced valve assembly (2).

3. Balanced valve group according to claim 1, characterized by further comprising accumulators (2.5), each C2 port being connected with an accumulator (2.5).

4. The balanced valve manifold as recited in claim 1, wherein n is 2 or 4.

5. A heated wall hydraulic lifting system, characterized by comprising a balanced valve group (2) according to any of claims 1-4.

6. A hydraulic lifting system for a heating wall according to claim 5, further comprising a cylinder (1) and a solenoid directional valve (3);

one of the A port and the B port of the working oil port of the electromagnetic directional valve (3) is connected with the V1 port of the balance valve group (2), and the other of the A port and the B port is connected with the V2 port of the balance valve group (2);

the rodless cavities of the oil cylinders (1) are connected to the C1 port of the balance valve group (2), and the rod cavity of one oil cylinder (1) is correspondingly connected with one C2 port.

7. A heating wall hydraulic lifting system according to claim 6, characterized by further comprising a two-way flow valve (4), the two-way flow valve (4) being connected with the P port of the electromagnetic directional valve (3).

8. A heating machine comprising a heated wall hydraulic hoist system as claimed in any one of claims 5 to 7.

Technical Field

The invention belongs to the technical field of in-situ heat regeneration unit equipment, and relates to a balance valve bank, a heating wall hydraulic lifting system and a heater.

Background

The in-situ thermal regeneration technology is a construction process of heating, raking loose and mixing a certain amount of regenerant and new asphalt or new asphalt mixture on the spot of an old asphalt pavement, and then carrying out thermal mixing, spreading and compaction molding on the mixture.

The heater in the hot in-place recycling unit is equipment for heating the old asphalt pavement. In the construction process of the heater, the heating quality of the old asphalt pavement is influenced by the gap between the heating wall and the ground and the uniformity control of the gap.

The clearance between the heating wall and the road surface is generally adjusted by lifting and lowering a plurality of oil cylinders, so that the synchronous adjustment and the position maintenance of the lifting cylinders of the heating wall are relatively important. Because the area of the heating wall body is large, the lifting of the heating wall body is driven by a plurality of oil cylinders, and the problems of synchronism, positioning gap uniformity and position maintenance of the oil cylinders are involved.

Disclosure of Invention

The purpose is as follows: in order to overcome the defects in the prior art, the invention provides a balance valve bank, a heating wall hydraulic lifting system and a heating machine.

The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:

in a first aspect, a balanced valve bank is provided, which comprises a homodromous balanced valve, a hydraulic control one-way valve and a flow distributing and collecting valve;

the balance valve group is provided with a V1 port, a V2 port, a C1 port and n C2 ports; n is an even number greater than 1;

a V1 port of the balance valve bank is connected with a C1 port through a hydraulic control one-way valve; the port C1 is used for connecting with a rodless cavity of the oil cylinder;

the V2 mouth of balanced valve valves divides into n way behind the reposition of redundant personnel collecting valve, and every way all is connected with a C2 mouth through a syntropy type balanced valve, and C2 mouth is used for being connected with the pole chamber of hydro-cylinder.

The n of the balanced valve group is 2 or 4. More preferably 2C 1 ports.

In some embodiments, the balanced valve assembly further comprises a relief valve connected to the port V1 of the balanced valve assembly.

In some embodiments, the balancing valve group further comprises an accumulator, and each port C2 is connected with the accumulator.

In a second aspect, a hydraulic lifting system for a heating wall is also provided, which comprises the balanced valve group.

In some embodiments, the heating wall hydraulic lifting system further comprises an oil cylinder and an electromagnetic directional valve;

one of the A port and the B port of the working oil port of the electromagnetic directional valve is connected with the V1 port of the balance valve group, and the other of the A port and the B port of the working oil port of the electromagnetic directional valve is connected with the V2 port of the balance valve group;

and rodless cavities of the oil cylinders are connected to the C1 port of the balance valve bank, and a rod cavity of one oil cylinder is correspondingly connected with one C2 port.

In some embodiments, the heating wall hydraulic lifting system further comprises a two-way flow valve, and the two-way flow valve is connected with the port P of the electromagnetic directional valve.

In a third aspect, the heating machine is further provided, and the heating wall hydraulic lifting system is included.

Has the advantages that: the balance valve group, the heating wall hydraulic lifting system and the heating machine provided by the invention can realize the synchronism, the positioning clearance uniformity and the position maintenance of a plurality of oil cylinders. Has the following advantages:

1) a hydraulic control one-way valve is arranged in the rodless cavity of the oil cylinder; a rod cavity of the oil cylinder is provided with a homodromous balance valve; the two valves are combined together to realize the locking function of the two cavities of the oil cylinder;

2) meanwhile, the negative load on the oil cylinder is changed into the positive load when the heating wall descends by utilizing the hydraulic control throttling function of a balance valve arranged in a rod cavity of the oil cylinder, so that the oil cylinder can be actively controlled to descend stably;

3) a flow distributing and collecting valve is arranged and used for the synchronous action function of the heating wall lifting cylinder;

4) the energy accumulator is arranged in the rod cavity of the oil cylinder, and the leakage of the homodromous balance valve is compensated by utilizing the pressure maintaining function of the energy accumulator, so that the position maintenance of the heating wall during long-time operation is facilitated;

5) an overflow valve is arranged in the rodless cavity of the oil cylinder to limit pressure and prevent the oil cylinder from bending;

6) the equidirectional balance valve is the most commonly used balance valve in the market and is low in price.

Drawings

FIG. 1 is a schematic view of a heated wall hydraulic lift system of an embodiment;

FIG. 2 is a schematic illustration of a balanced valve stack of an embodiment;

in the figure: the device comprises an oil cylinder 1, a balance valve group 2, an electromagnetic directional valve 3 and a two-way flow valve 4;

the hydraulic control system comprises a homodromous balance valve 2.1, a hydraulic control one-way valve 2.2, a flow distributing and collecting valve 2.3, an overflow valve 2.4 and an energy accumulator 2.5.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.