阅读说明：本技术 臂架系统和作业车辆 (Boom system and work vehicle ) 是由 蔡毅 姚占磊 王仲杰 于 2020-05-29 设计创作，主要内容包括：本发明提出了一种臂架系统和作业车辆,其中,臂架系统包括：转台；臂架,包括第一臂架组件和第二臂架组件,第一臂架组件与转台铰接,第二臂架组件位于第一臂架组件的一侧；其中,第一臂架组件与转台的铰接轴线与水平面成预设夹角,且从第一臂架组件的一侧至第二臂架组件的一侧,铰接轴线向上倾斜。本发明仅改变第一臂架组件相对于转台的安装方式,即可解决臂架本身因重心偏置而存在的偏载和扭矩或旁弯矩问题,无需对臂架进行重大的结构改进,更无需增加过多的其他结构。(The invention provides a boom system and an operating vehicle, wherein the boom system comprises: a turntable; the arm support comprises a first arm support component and a second arm support component, the first arm support component is hinged with the rotary table, and the second arm support component is positioned on one side of the first arm support component; the first arm frame assembly and the hinge axis of the rotary table form a preset included angle with the horizontal plane, and the hinge axis is inclined upwards from one side of the first arm frame assembly to one side of the second arm frame assembly. According to the invention, the problems of unbalance loading and torque or side bending moment of the arm support due to gravity center offset can be solved only by changing the installation mode of the first arm support component relative to the rotary table, and the arm support does not need to be subjected to great structural improvement and does not need to be added with other structures too much.)

1. A boom system, comprising:

a turntable;

the arm support comprises a first arm support component and a second arm support component, the first arm support component is hinged with the rotary table, and the second arm support component is positioned on one side of the first arm support component;

the first arm frame assembly and the hinge axis of the rotary table form a preset included angle with the horizontal plane, and the hinge axis is inclined upwards from one side of the first arm frame assembly to one side of the second arm frame assembly.

2. The boom system of claim 1, wherein the turntable comprises:

the bottom plate is horizontally arranged, and a connecting end face is formed on the bottom plate;

the vertical plate is vertically arranged on the connecting end face, a hinge hole is formed in the vertical plate, the first arm frame assembly is hinged to the vertical plate through the hinge hole, and the axis of the hinge hole is obliquely arranged relative to the connecting end face, so that a preset included angle is formed between the first arm frame assembly and the hinge axis of the rotary table and the horizontal plane.

3. The boom system of claim 2, further comprising:

the shaft sleeve is arranged in the hinge hole;

the connecting piece penetrates through the shaft sleeve, and the first arm frame assembly is hinged with the vertical plate through the connecting piece;

the first jib assembly comprises two vertical plates, a mounting position is formed between the two vertical plates, hinge holes are formed in the two vertical plates and are coaxially arranged, and at least part of the end part of the first jib assembly is contained in the mounting position.

4. The boom system of claim 1, wherein the turntable comprises:

the base plate is provided with a connecting end face;

the vertical plate is vertically arranged on the connecting end face, a hinge hole is formed in the vertical plate, and the first arm support assembly is hinged to the vertical plate through the hinge hole;

the base plate is obliquely arranged with the horizontal plane, so that a preset included angle is formed between the first arm frame assembly and the horizontal plane and between the hinge axis of the rotary table and the horizontal plane.

5. The boom system of any of claims 1-4, further comprising:

and the operating platform is connected with the tail end of the second arm frame component and is positioned on the side of the rotary table, and a containing space is arranged in the operating platform.

6. Boom system according to any of the claims 1-4,

the value range of the preset included angle is 0-3 degrees.

7. The boom system of claim 6,

the value range of the preset included angle is 0.5-1 degree; or

The value range of the preset included angle is 1-1.5 degrees.

8. The boom system of any of claims 1-4, further comprising:

a driving device connected with the first arm frame assembly and the turntable, wherein the driving device is configured to drive the first arm frame assembly to rotate; and/or

The first boom frame assembly comprises a plurality of boom units which are mutually telescopic or foldable, and the second boom frame assembly comprises a plurality of boom units which are mutually telescopic or foldable; and/or

The end part of the first arm frame component is provided with an arm frame head, and the second arm frame component is rotatably connected with the first arm frame component through the arm frame head.

9. A work vehicle, characterized by comprising:

a chassis; and

the boom system of any of claims 1-8, said turntable being disposed on said chassis.

10. The work vehicle according to claim 9,

the rotary table is rotatably connected with the chassis.

Technical Field

The invention relates to the technical field of engineering machinery, in particular to a boom system and an operating vehicle.

Background

In the existing boom system, the gravity center of the boom system is often located at the side of the boom system, so that the boom bears eccentric load and additional torque or side bending moment, and the stability and the operation area of the boom system are seriously influenced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

To this end, the invention provides, in a first aspect, a boom system.

A second aspect of the invention provides a work vehicle.

A first aspect of the present invention provides a boom system, including: a turntable; the arm support comprises a first arm support component and a second arm support component, the first arm support component is hinged with the rotary table, and the second arm support component is positioned on one side of the first arm support component; the first arm frame assembly and the hinge axis of the rotary table form a preset included angle with the horizontal plane, and the hinge axis is inclined upwards from one side of the first arm frame assembly to one side of the second arm frame assembly.

The arm support system provided by the invention comprises a rotary table and an arm support. The arm support comprises a first arm support assembly and a second arm support assembly, the first arm support assembly is hinged with the rotary table, and the second arm support assembly is located on one side of the first arm support assembly. Particularly, a preset included angle is formed between the first arm support assembly and a hinge axis of the rotary table and the horizontal plane, so that the arm support is in an inclined state on the rotary table, and the arm support can have certain pre-torsion and pre-deflection. Further, the hinge axis is inclined upward from one side of the first boom assembly to one side of the second boom assembly. That is, the first boom assembly is obliquely arranged towards one side departing from the second boom assembly, so that pre-torsion and pre-deflection of the boom are balanced with unbalance loading and torque or side bending moment generated at the mounting position of the second boom assembly, and the stability and the bearing capacity of the boom are improved.

In addition, the invention only changes the installation of the first arm support component relative to the rotary table, can effectively solve various problems caused by the gravity center offset of the arm support, particularly solve the problems of the offset load and the torque or the lateral bending moment of the arm support, does not need to carry out great structural improvement on the arm support, does not need to increase other excessive structures and complex designs, and greatly saves the manufacturing cost of the arm support system.

The boom system according to the above technical solution of the present invention may further have the following additional technical features:

in the above technical solution, the turntable includes: the bottom plate is horizontally arranged, and a connecting end face is formed on the bottom plate; the vertical plate is vertically arranged on the connecting end face, a hinge hole is formed in the vertical plate, the first arm frame assembly is hinged to the vertical plate through the hinge hole, and the axis of the hinge hole is inclined relative to the connecting end face so that the first arm frame assembly and the hinge axis of the rotary table form a preset included angle with the horizontal plane.

In the technical scheme, the rotary table comprises a bottom plate and a vertical plate. The bottom plate is horizontally arranged on the rotary table, and a connecting end face is arranged on the bottom plate; the vertical plate is vertically arranged on the connecting end face, and a hinge hole is formed in the vertical plate, so that the first arm frame assembly is hinged to the vertical plate through the hinge hole. In addition, the hinge hole on the riser sets up for connecting the terminal surface slope to make the articulated axis of first jib subassembly and revolving stage and horizontal plane become and predetermine the contained angle, guarantee that first jib subassembly sets up for the revolving stage slope.

Particularly, the first arm support assembly is arranged obliquely relative to the rotary table through the oblique arrangement of the hinge hole, the hinge hole is simple in structure and convenient to obliquely process, the manufacturing difficulty of the rotary table can be effectively reduced, and the manufacturing cost of the arm support system is reduced.

Specifically, when the boom system is in a non-working state, the boom is wholly in a contracted state, the second boom assembly is located on the second side of the first boom assembly, the second boom assembly can apply eccentric load and torque towards the second side to the first boom assembly, at the moment, the eccentric load and the torque towards the second side can be balanced by pre-twisting and pre-deflecting towards the first side, and the integral stability of the boom system is guaranteed.

Specifically, when the boom system is in a working state, the whole boom is in an unfolded state, the whole second boom assembly is located in front of the first boom assembly, the second boom assembly can apply eccentric load and side bending moment to the first boom assembly, and at the moment, the eccentric load and the side bending moment can be balanced by pre-twisting and pre-deflecting, so that the integral stability of the boom system is ensured, and the operation area of the boom system is not influenced.

In any of the above technical solutions, the boom system further includes: the shaft sleeve is arranged in the hinge hole; the connecting piece penetrates through the shaft sleeve, and the first arm frame assembly is hinged with the vertical plate through the connecting piece; the two vertical plates form a mounting position between the two vertical plates, the hinge holes are formed in the two vertical plates and are coaxially arranged, and at least part of the end part of the first jib assembly is accommodated in the mounting position.

In the technical scheme, the boom system further comprises a shaft sleeve and a connecting piece. The shaft sleeve is arranged in the hinge hole, and the connecting piece penetrates through the inside of the shaft sleeve, so that the first arm frame assembly is hinged with the vertical plate through the connecting piece. In addition, the number of the vertical plates is two, the two vertical plates are arranged in parallel to form an installation position, at least part of the end part of the first arm support assembly is accommodated in the installation position, the sufficient space position of the joint of the arm support and the rotary table is ensured, and the problem of structural interference between the arm support and the rotary table is solved. And, the hinge hole is formed on two risers, and two coaxial settings of hinge hole guarantee that first jib subassembly can rotate for the revolving stage is nimble.

In any of the above technical solutions, the turntable includes: the bottom plate is provided with a connecting end surface; the vertical plate is vertically arranged on the connecting end face, a hinge hole is formed in the vertical plate, and the first arm support assembly is hinged to the vertical plate through the hinge hole; the base plate is obliquely arranged with the horizontal plane, so that a preset included angle is formed between the first arm frame assembly and the horizontal plane and between the hinge axis of the rotary table and the horizontal plane.

In the technical scheme, the rotary table comprises a bottom plate and a vertical plate. The bottom plate is arranged on the rotary table, and a connecting end face is arranged on the bottom plate; the vertical plate is arranged on the connecting end face, and a hinge hole is formed in the vertical plate, so that the first arm frame assembly is hinged to the vertical plate through the hinge hole. In addition, the vertical plates are directly arranged obliquely relative to the horizontal plane, and a preset included angle is formed between the first arm frame assembly and the horizontal plane and between the hinge axis of the rotary table and the horizontal plane.

In any of the above technical solutions, the boom system further includes: and the operating platform is connected with the tail end of the second arm frame component and is positioned on the side of the rotary table, and a containing space is arranged in the operating platform.

In the technical scheme, the boom system further comprises an operation platform. The operating platform is connected with the tail end of the second arm frame component, and an accommodating space is arranged in the operating platform for workers to stand or for materials to be stored; and through the cooperation of first jib subassembly and second jib subassembly, transport constructor or material arrival appointed construction position. In addition, the operating platform is located to the side of the turntable so that the first boom assembly, being arranged at an incline, further balances the offset load and the torque or side bending moment due to the operating platform.

In any of the above technical solutions, the preset included angle has a value range of 0 ° to 3 °.

In the technical scheme, the size of the preset included angle determines the size of the pre-torsion and pre-deflection of the arm support. According to the boom system provided by the invention, the value range of the preset included angle formed by the first boom component and the hinge axis of the rotary table and the horizontal plane is 0-3 degrees, and by reasonably setting the value range of the preset included angle, on one hand, the pre-torsion and pre-deflection are ensured to balance the unbalance loading and the torque or the side bending moment of the boom, on the other hand, the overall structure coordination of the boom system is ensured, especially, the boom is ensured to be inclined in a reasonable range, the overlarge inclination angle of the boom system is avoided, and the stability of the boom system is ensured.

In any of the above technical solutions, the value range of the preset included angle is 0.5 ° to 1 °; or the value range of the preset included angle is 1-1.5 degrees.

In the technical scheme, the value range of the preset included angle is further limited to be 0.5-1 degrees, or the value range of the preset included angle is 1-1.5 degrees, the inclination angle of the first arm frame component relative to the horizontal plane is further corrected, and the fact that pre-torsion and pre-deflection caused by the inclined arrangement of the first arm frame component are close to the offset load, the torque or the side bending moment of the arm frame per se is further guaranteed.

In any of the above technical solutions, the boom system further includes: the driving device is connected with the first arm frame assembly and the rotary table and is configured to drive the first arm frame assembly to rotate; and/or the first boom assembly comprises a plurality of boom units which are mutually telescopic or foldable, and the second boom assembly comprises a plurality of boom units which are mutually telescopic or foldable; and/or the end part of the first arm support assembly is provided with an arm support head, and the second arm support assembly is rotatably connected with the first arm support assembly through the arm support head.

In the technical scheme, the boom system further comprises a driving device. The driving device is connected with the first arm frame assembly and the rotary table and can drive the first arm frame assembly to rotate, and action requirements of different positions are further met. In addition, the first boom frame assembly comprises a plurality of boom units which are mutually telescopic or foldable, the second boom frame assembly comprises a plurality of boom units which are mutually telescopic or foldable, the first boom frame assembly and the second boom frame assembly are guaranteed to be both telescopic or foldable, the working distance of the first boom frame assembly and the second boom frame assembly is guaranteed, and the first boom frame assembly and the second boom frame assembly are stored in a small space. In addition, the end part of the first arm frame component is provided with an arm frame head, and the second arm frame component is rotatably connected with the first arm frame component through the arm frame head, so that the rotary connection of the first arm frame component and the second arm frame component is ensured.

A second aspect of the invention provides a work vehicle including: a chassis; and the arm support system according to any one of the above technical schemes, wherein the turntable is arranged on the chassis.

The working vehicle provided by the invention comprises a chassis and the arm support system in any technical scheme. Therefore, all the advantages of the boom system are achieved, and are not discussed in detail herein. Specifically, the turntable is provided on the chassis.

In the technical scheme, the rotary table is rotatably connected with the chassis.

In the technical scheme, the rotary table is rotatably connected with the chassis, so that the rotary table can drive the arm support to rotate, and further, the action requirements in different directions are met.

In any of the above technical solutions, the work vehicle provided by the present invention may be a pump truck, a fire truck, a crane, or the like.

In any of the above technical solutions, the operation platform is a hopper.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a boom system (applied to a work vehicle) according to an embodiment of the present invention;

FIG. 2 is a top view of the boom system of the embodiment shown in FIG. 1;

fig. 3 is a schematic structural diagram of a turntable in the boom system of the embodiment shown in fig. 1;

fig. 4 is a force analysis diagram of the boom system of the embodiment shown in fig. 1 in a first state;

fig. 5 is a force analysis diagram of the boom system of the embodiment shown in fig. 1 in a second state;

fig. 6 is a partially enlarged view of a boom system a of the embodiment shown in fig. 5.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 6 is:

100 turntables, 102 bottom plates, 104 vertical plates, 106 hinge holes, 108 installation positions, 200 arm frames, 202 first arm frame assemblies, 204 second arm frame assemblies, 300 operation platforms, 400 connecting pieces, 500 driving devices, 600 arm frame heads and 700 chassis.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

Boom systems and work vehicles provided according to some embodiments of the present invention are described below with reference to fig. 1-6.