Arm body device with built-in pipeline of overhead working truck

Abstract

The invention belongs to the technical field of arm supports of overhead working equipment, and particularly relates to an overhead working truck pipeline built-in arm body device which comprises a plurality of sleeved arm bodies, and the arm bodies are controlled to stretch out and retract back through oil cylinders and inhaul cables. A guide groove and a drag chain are arranged at the bottom of the arm body, the drag chain is connected to the arm head of the arm body and the arm tail of the lower arm body, and the drag chain, the pipeline guide groove, the oil cylinder, the inhaul cable and other components are arranged in the telescopic arm body to move a pipeline on the outer side of the arm frame into the arm frame and standardize the motion state of the pipeline when the arm frame stretches out and draws back. The outer surface of the cantilever crane is simple and free of scratching points, the situation that pipelines of the cantilever crane are scratched and wound when trees are trimmed in cities or operation is carried out in narrow and complex spaces is reduced, and therefore the failure rate of high-altitude operation equipment in the scenes of tree trimming and the like is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of arm support of aerial work equipment, and particularly relates to an arm body device with pipeline built-in aerial work truck. BACKGROUND

[0002] Most pipeline structures of aerial work equipment are arranged on the outer surface of the arm support, and in the process of city tree pruning, the pipeline often scratches or winds with the branches of the tree trunk, thereby causing damage to the aerial work equipment and even danger, so there is an urgent need for a structure with simple and clean surface of the equipment without scratching points to improve the convenience of on-site operation and ensure the safety of on-site work. SUMMARY

[0003] To solve the above problems, the application provides an arm body device with pipeline built-in aerial work truck, which moves the pipeline originally arranged on the outer side of the arm support to the inner side of the arm support and standardizes the movement state of the pipeline during the extension and retraction of the arm support by arranging a drag chain, a pipeline guide groove, an oil cylinder and a cable and other components in the arm body, so that the outer surface of the arm support is simple and clean without scratching points, the scratching and winding of the pipeline of the arm support are reduced when the tree is pruned in the city or in a narrow and complex space, and the failure rate of the aerial work equipment in the scene of pruning trees is reduced.

[0004] To achieve the above purpose, the application adopts the following technical scheme:

[0005] An arm body device with pipeline built-in aerial work truck comprises multiple sleeved arm bodies, the arm bodies are controlled to extend and retract through an oil cylinder and a cable, the bottom of the arm body is provided with a guide groove and a drag chain, and the drag chain is connected between the arm head of the current arm body and the arm tail of the next arm body.

[0006] Further, the arm body adopts a polygonal pressing process with more than fourteen sides.

[0007] Further, the guide groove is a trapezoidal or rectangular pipe.

[0008] Further, the arm body device is a five-sleeved arm body.

[0009] Further, the guide groove and the drag chain are installed in the first and third arm bodies.

[0010] The application moves the pipeline arranged outside the arm support to the inner side of the arm body and limits the movement route of the hydraulic pipeline and the cable in the arm support, so as to prevent scratching with other internal elements of the arm support during the movement of the arm support. At the same time, the surface of the arm support is simple and beautiful without scratching points, which effectively protects the pipeline and reduces the failure problems caused by city tree pruning or operation in a narrow and complex space. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 Figure 2 is a lateral sectional view of the arm body device of the present application;

[0012] Figure 2 Figure 3 is a transmission route one of the hydraulic pipeline and cable of the arm body device of the present application;

[0013] Figure 3 Figure 4 is a transmission route two of the hydraulic pipeline and cable of the arm body device of the present application;

[0014] In the figure, 1 is a cylinder, 2 is a five-section arm, 3 is a four-section arm, 4 is a three-section arm, 5 is a two-section arm, 6 is a one-section arm, 7 is a recovery cable I, 8 is a recovery cable II, 9 is a guide groove I, 10 is a drag chain I, 11 is a guide groove, 12 is a drag chain II, 13 is an extension cable I, 14 is an extension cable II, 15 is an extension cable III, 16 is a recovery cable III, A is a guide groove I inlet, B is a guide groove I outlet, C is a drag chain I inlet, D is a drag chain I outlet, E is a guide groove II inlet, F is a guide groove II outlet, G is a drag chain II inlet, and H is a drag chain II outlet. DETAILED DESCRIPTION

[0015] The technical solutions of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0016] As Figure 1As shown, the application proposes an arm device with pipeline built-in for aerial work platform, which comprises a section arm 6, a two-section arm 5 sleeved in the section arm 6, a three-section arm 4 sleeved in the two-section arm 5, a four-section arm 3 sleeved in the three-section arm 4, and a five-section arm 2 sleeved in the four-section arm 3. The arm body transverse section of the section arm 6, the arm body transverse section of the two-section arm 5, the arm body transverse section of the three-section arm 4, the arm body of the four-section arm 3, and the arm body transverse section of the five-section arm 2 are preferably more than fourteen sides of polygonal compression process. The bottom of the section arm 6 is provided with two guide grooves I 9, which can be fixed with the section arm 6 by welding or connecting piece, and a drag chain I 10 is arranged between the two guide grooves I 9, which enters the tail of the three-section arm 4 through the head of the section arm 6. The guide groove I 9 and the drag chain I 10 are used for the hydraulic pipeline and the cable to pass through from the inside. Similarly, the bottom of the three-section arm 4 is provided with two guide grooves II 11, which are also fixed with the three-section arm 4 by welding or connecting piece, and a drag chain II 12 is arranged between the two guide grooves II 11, which enters the tail of the five-section arm 2 through the head of the three-section arm 4. The guide groove II 11 and the drag chain II 12 are also used for the hydraulic pipeline and the cable to pass through from the inside. The guide groove I 9 and the guide groove II 11 are preferably trapezoidal or rectangular pipes. At the same time, the two-section arm 5 is controlled by the oil cylinder 1 to extend and retract in the section arm 6, the three-section arm 4 is controlled by the extension cable 15 to extend from the two-section arm 5 and by the recovery cable 8 to recover into the two-section arm 5, the four-section arm 3 is controlled by the extension cable 14 to extend from the three-section arm 4 and by the recovery cable 16 to recover into the three-section arm 4, and the five-section arm 2 is controlled by the extension cable 13 to extend from the four-section arm 3 and by the recovery cable 7 to recover into the four-section arm 3. The above actions are performed synchronously, so as to realize the extension and retraction of the arm support.

[0017] The transmission route of the hydraulic pipeline and the cable is as shown in Figure 2 、 Figure 3 : the hydraulic pipeline and the cable enter the guide groove from the guide groove I 9 inlet A at the bottom of the section arm 6, turn from the guide groove I 9 outlet B, enter the drag chain from the drag chain I 10 inlet C, enter the tail of the three-section arm 4 from the drag chain I 10 outlet D, enter the guide groove from the guide groove II 11 inlet E at the bottom of the three-section arm 4, turn from the guide groove II 11 outlet F, enter the drag chain from the drag chain II 12 inlet G, enter the tail of the five-section arm 2 from the drag chain II 12 outlet H, and finally connect to each actuator from the tail of the five-section arm 2. The entire arm support is a synchronous extension and retraction mechanism. When the arm support is extended and retracted, the drag chain I 10 and the drag chain II 12 (the movement change amount of the drag chain I 10 is the sum of the extension distances between the section arm 6 and the two-section arm 5 and between the two-section arm 5 and the three-section arm 4, and the movement change amount of the drag chain II 12 is the sum of the extension distances between the three-section arm 4 and the four-section arm 3 and between the four-section arm 3 and the five-section arm 2) respectively drive the corresponding section of the hydraulic pipeline and the cable to act.

[0018] The arm body device of the present application moves the pipeline outside the arm support to the inside of the arm support through the telescopic arm body by arranging the drag chain, guide slot, oil cylinder and pull cable and other components, and guarantees that the pipeline does not scratch other internal elements of the arm support during the movement of the arm support by limiting the movement path of the specific pipeline, which basically meets the invention requirement that the pipeline is placed inside the arm support.

[0019] The above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit the same. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that, within the technical scope disclosed by the present application, the technical personnel in the art can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some of the technical features; and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A boom assembly built into the pipeline of an aerial work platform, comprising a multi-section assembled boom, wherein the boom is extended and retracted by hydraulic cylinders and cables; characterized in that, The bottom of the arm body is provided with a guide groove and a cable chain, which connects the arm head of this arm body and the arm tail of the next arm body.

2. The boom assembly with built-in pipeline of an aerial work platform according to claim 1, characterized in that, The arm body is manufactured using a polygonal pressing process with more than fourteen sides.

3. The boom assembly with built-in pipeline of an aerial work platform according to claim 1, characterized in that, The guide groove is a trapezoidal or rectangular tube.

4. The boom assembly with built-in pipeline of an aerial work platform according to claim 1, characterized in that, The arm assembly is a five-section arm assembly.

5. The boom assembly with built-in pipeline of an aerial work platform according to claim 1, characterized in that, The guide groove and cable chain are installed in the first and third arm sections.

Images