CN214061760U

CN214061760U - Pilot pipeline arrangement structure for excavator and excavator

Info

Publication number: CN214061760U
Application number: CN202022922683.XU
Authority: CN
Inventors: 郭刚; 蒙小行; 刘虹; 关启钧; 陈波
Original assignee: LOVOL Engineering Machinery Group Co Ltd
Current assignee: Lovol Heavy Industry Group Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-08-27
Anticipated expiration: 2030-12-08

Abstract

The utility model relates to an engineering machine tool technical field especially relates to an excavator is with elder generation pipeline arrangement structure. The utility model provides a pilot pipeline arrangement structure for excavator, including setting up in the left guide handle of driver's cabin handrail case, connect through transition joint between left guide handle and the guide pipe the position that driver's cabin handrail case is in left guide handle below sets up first via hole, sets up the second via hole in the position that driver's cabin bottom plate frame is in first via hole below; the pilot pipe penetrates through the first through hole and the second through hole; the left pilot handle, the transition joint and the part of the pilot conduit above the second through hole are positioned on the same straight line. Compared with the prior pilot pipeline arrangement mode, the length of the pilot pipe is reduced, and the cost is saved; the steps of the mode of changing the installation direction of the left pilot handle are simple; the pilot pipe does not need to be disassembled, so that the waste of hydraulic oil and the pollution risk of a hydraulic system are avoided.

Description

Pilot pipeline arrangement structure for excavator and excavator

Technical Field

The utility model relates to an engineering machine tool technical field especially relates to an excavator is with elder generation pipeline arrangement structure.

Background

In the field of engineering machinery, small hydraulic excavators are widely applied, the pilot part of a cab of the existing hydraulic excavator adopts a pilot handle hose to move towards a rear-mounted type, a pilot pipeline is too long, the operation habit of a user in south of China is different from that in north, the user is used for controlling the rotation by operating a left pilot handle in a front-back mode and controlling a bucket rod in a left-right mode, and the operation habit is just opposite to that of the user in north.

The inventor finds that by adopting the pilot pipeline arrangement structure of the hydraulic excavator on the market, the overall cost is increased due to the overlong pilot pipeline, and part of southern users need to replace the pilot pipeline of the left pilot handle after purchasing the excavator, the left pilot handle fixing bolt needs to be detached firstly during replacement, the left pilot handle fixing bolt needs to be pulled out from a cab handrail box, and four pilot pipes for controlling the rotation and the bucket rod are detached and are mutually exchanged. This type of exchange is complicated to operate and, as the pilot line is disconnected, it not only causes a waste of hydraulic oil, but also increases the risk of contamination of the hydraulic system.

Disclosure of Invention

The utility model discloses a solve above-mentioned problem, provided earlier pipe way arrangement structure for excavator, solved current hydraulic shovel's guide's pipeline arrangement structure pipeline overlength, whole quick-witted with high costs to and the guide's pipeline of left guide handle changes, and the operation is complicated, causes the waste of hydraulic oil, has increased the problem to the risk of hydraulic system pollution.

In order to achieve the above object, one or more embodiments of the present invention provide the following technical solutions:

a pilot pipeline arrangement structure for an excavator comprises a left pilot handle arranged on a cab armrest box, the left pilot handle is connected with a pilot pipe through a transition joint, a first through hole is formed in the position, below the left pilot handle, of the cab armrest box, and a second through hole is formed in the position, below the first through hole, of a cab baseplate frame;

the pilot pipe penetrates through the first through hole and the second through hole;

the left pilot handle, the transition joint and the part of the pilot conduit above the second through hole are positioned on the same straight line.

In a further improvement, the left pilot handle is detachably fixed with the cab armrest box through a bolt, and the lower end of the left pilot handle is connected with a transition joint.

In a further improvement, the number of the bolts is four, the bolts are arranged at four vertexes of a square, and the center of the left pilot handle is located at the center of the square.

In a further improvement, the first guide pipe is provided with four guide pipes, and the upper end of the first guide pipe is connected with the transition joint.

In a further improvement, the first via hole is a square hole with a notch.

In a further improvement, the square hole with the notch is formed by matching an L-shaped rod with the cab armrest box body.

In a further improvement, the second through hole is a cylindrical through hole arranged on the cab floor frame.

In a further improvement, the part of the first guide pipe above the second through hole is in a relaxed state.

In a further improvement, the armrest box is provided with an installation platform, and the left pilot handle is installed on the installation platform through a bolt.

The utility model also provides an excavator, including foretell excavator is with elder generation pipeline arrangement structure.

Compared with the prior art, the beneficial effect of above one or more technical scheme:

(1) because the first through hole and the second through hole that the guide pipe passed are all in the below of left guide handle, first through hole is in driver's cabin handrail case front portion position, and the second through hole is in the front portion position of driver's cabin bottom plate frame, have reduced the length of guide pipe for the arrangement mode of current guide pipe way, have practiced thrift the cost.

(2) Because the left pilot handle, the transition joint and the pilot pipe have the same trend, and the pilot handle is detachably fixed with the cab armrest box through the bolt, when the installation direction of the left pilot handle is changed, the left pilot handle fixing bolt does not need to be detached, the left pilot handle fixing bolt is pulled out from the cab armrest box, and then the four first guide pipes for controlling the rotation and the bucket rod are detached and exchanged. Only the left pilot handle is rotated by 90 degrees and then the bolt is installed, and compared with the existing mode of changing the installation direction of the left pilot handle, the method has simple steps.

(3) The pilot pipe does not need to be disassembled, so that the waste of hydraulic oil and the pollution risk of a hydraulic system are avoided.

Drawings

FIG. 1 shows a pilot pipeline arrangement of a cab of a conventional hydraulic excavator;

fig. 2 is a schematic view of a pilot pipeline arrangement structure for an excavator provided by an embodiment of the present invention;

fig. 3 is a schematic layout view of a left pilot handle of the pilot pipeline layout structure for the excavator provided by the embodiment of the present invention when leaving the factory;

fig. 4 is a schematic layout diagram of the left pilot handle after changing the direction when the pilot pipeline layout structure for the excavator leaves the factory according to the embodiment of the present invention;

in the figure:

1 left guide handle, 2 first pipes, 3 cab armrest boxes, 31 first through holes, 4 transition joints, 5 cab baseplate frames, 51 second through holes and 6 bolts.

Detailed Description

The pilot pipeline arrangement structure of the existing hydraulic excavator is shown in fig. 1, a left pilot handle 1 is connected with a pilot pipe 2 through a transition joint 4, and the pilot pipe 2 is arranged backwards and sequentially penetrates through a handrail box rear through hole 32 and a baseplate frame rear through hole 52.

On one hand, the pilot pipeline is too long in the postpositional arrangement mode of the pilot pipeline, and the cost is increased.

On the other hand, in the south of China, a user is used to control the rotation of the left pilot handle by operating the left pilot handle back and forth, and the control of the bucket rod by operating the left pilot handle and the right pilot handle is just opposite to that of a user in the north. And after some southern users purchase the machine, the left pilot handle pilot pipeline needs to be exchanged. Because the pilot pipeline is arranged at the rear, the pilot pipe and the left pilot handle are not consistent in direction, when the pilot pipeline is exchanged, the left pilot handle fixing bolt needs to be detached firstly and pulled out from the cab armrest box 3, and the four pilot pipes for controlling the rotation and the bucket rod are detached and exchanged. This type of exchange is complicated to operate and, as the pilot line is disconnected, it not only causes a waste of hydraulic oil, but also increases the risk of contamination of the hydraulic system.

Example 1

In order to solve the above problems, a first embodiment of the present invention provides a pilot pipeline layout structure for an excavator, as shown in fig. 2, comprising a left pilot handle 1 disposed above a cab armrest box 3, the left pilot handle 1 and the pilot pipe 2 being connected by a transition joint 4,

a first through hole 31 is formed in the position, below the left pilot handle 1, of the cab armrest box 3, and a second through hole 51 is formed in the position, below the first through hole 31, of the cab floor frame 5;

the first guide pipe 2 passes through the first via hole 31 and the second via hole 51.

Because the first through hole 31 and the second through hole 51 through which the pilot pipe 2 passes are both arranged below the left pilot handle, the first through hole 31 is arranged at the front part of the cab armrest box 3, and the second through hole 51 is arranged at the front part of the cab floor frame 5, the length of the pilot pipe is reduced compared with the arrangement mode of the existing pilot pipe way, and the cost is saved.

The left pilot handle 1, the transition joint 4 and the part of the pilot conduit above the second through hole are in the same straight line. The left guide handle is detachably fixed with a cab armrest box through a bolt 6, and the lower end of the left guide handle is connected with a transition joint.

The number of the bolts is four, the bolts are arranged at four vertexes of the square, and the center of the left pilot handle is located at the center of the square; the first guide pipe is provided with four guide pipes, and the upper end of the first guide pipe is connected with the transition joint.

Because the left pilot handle 1, the transition joint 4 and the part of the pilot conduit above the second through hole are on the same straight line, namely the left pilot handle 1, the transition joint 4 and the pilot conduit have the same trend, the left pilot handle is favorable for rotating, and the obstruction caused by the inconsistent trend of the hand transition joint and the pilot conduit is avoided. When the installation direction of the left pilot handle is changed, the left pilot handle fixing bolt does not need to be detached, and the left pilot handle fixing bolt is pulled out from the cab armrest box and then the four first guide pipes for controlling the rotation and the bucket rod are detached and changed with each other. Only the left pilot handle needs to be rotated by 90 degrees and then the bolt is installed, and compared with the existing mode of changing the installation direction of the left pilot handle, the method has simple steps. The pilot pipe does not need to be disassembled, so that the waste of hydraulic oil and the pollution risk of a hydraulic system are avoided.

In a further improvement, the first through hole 31 is a notched square hole formed by matching an L-shaped rod with a cab armrest box body; the second through hole is a cylindrical through hole arranged on the cab baseplate frame and is used for binding and fixing the pilot tube. The notched square holes facilitate installation of the lead pipe.

The part of the first guide pipe above the second through hole is in a loose state, the armrest box is provided with an installation platform, and the left guide handle is installed on the installation platform through a bolt. The relaxed state of the pilot tube facilitates rotation of the left pilot handle.

The installation process of the direction change of the left pilot handle is shown in figures 3-4, the installation mode when leaving the factory is shown in figure 3, the left and right movement of the left pilot handle is rotation control, and the front and back movement is excavation unloading position. After leaving the factory, when a part of southern customers use the excavator, the left pilot handle is disassembled and rotated 90 degrees anticlockwise, the bolt is installed, and as shown in figure 4, the left pilot handle is changed into a mode that the left pilot handle moves forwards and backwards to be rotation control and moves leftwards and rightwards to be an excavating and unloading position. Compared with the existing mode of changing the installation direction of the left pilot handle, the method has simple steps, and avoids the waste of hydraulic oil and the pollution risk of a hydraulic system because the pilot pipe does not need to be disassembled.

EXAMPLE 2

A second embodiment of the present invention provides an excavator, comprising a foreline arrangement structure for excavators according to the preceding claims.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. A pilot pipeline arrangement structure for an excavator comprises a left pilot handle arranged on a cab armrest box, the left pilot handle is connected with a pilot pipe through a transition joint, and is characterized in that,

a first through hole is formed in the position, below the left pilot handle, of the cab armrest box, and a second through hole is formed in the position, below the first through hole, of the cab baseplate frame;

2. The pilot conduit arrangement structure for excavators according to claim 1, wherein the left pilot handle is detachably fixed to a cab armrest box by a bolt, and a transition joint is connected to a lower end of the left pilot handle.

3. The pilot conduit arrangement for excavators according to claim 2, wherein the bolts are four and are disposed at four vertices of a square, and the center of the left pilot handle is located at the center of the square.

4. The pilot conduit arrangement for excavators according to claim 1, wherein the pilot conduits have four, and upper ends of the pilot conduits are connected to the transition joint.

5. The pilot conduit arrangement structure for an excavator according to claim 4, wherein the first through hole is a square hole having a notch.

6. The pre-guide pipe routing structure for excavators according to claim 5, wherein the square hole having the notch is formed by fitting an L-shaped bar with a cab console box body.

7. The pilot conduit arrangement structure for the excavator according to claim 4, wherein the second through hole is a cylindrical through hole provided in a floor frame of the cab.

8. The pilot conduit arrangement structure for an excavator according to claim 5, wherein a portion of the pilot conduit above the second via hole is in a relaxed state.

9. The pilot conduit arrangement structure for an excavator according to claim 1 wherein the console box is provided with a mount on which a left pilot handle is mounted by a bolt.

10. An excavator comprising a foreline arrangement for an excavator according to any one of claims 1 to 9.