Hydraulic pump oil suction pipeline structure and mounting method

Abstract

The invention discloses a hydraulic pump oil suction pipeline structure and an installation method, solves the problem that in the prior art, reasonable arrangement of oil supply pipelines in a narrow space is difficult, and has the beneficial effects that all the pipelines are reasonably arranged, the space is fully utilized, and interference with a gearbox is avoided. Comprising an oil inlet component and a heat dissipation pump oil suction pipe, the heat dissipation pump oil suction pipe is arranged on the upper side of the gearbox, the oil inlet component and the gearbox are arranged at an interval, the oil inlet component is hollow and communicates with an oil tank oil outlet pipe, and the first side of the oil inlet component communicates with a working pump oil suction pipe on the front side through a connecting pipe; the side portion of the connecting pipe is communicated with the brake pump oil suction pipe, the brake pump oil suction pipe and the front side working pump oil suction pipe extend towards the upper side of the oil inlet component, the top side of the oil inlet component is communicated with the rear side working pump oil suction pipe, the second side of the oil inlet component is communicated with the fan pump oil suction pipe, and the first side and the second side of the oil inlet component are oppositely arranged.

Description

Technical Field

[0001] The invention relates to the technical field of loaders, and in particular to a hydraulic pump oil suction pipeline structure and an installation method. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Large loaders, despite their large size, are limited by the location of the engine, gearbox, etc., and the layout space of hydraulic components is easily limited. Large loaders have multiple hydraulic pumps. To meet work requirements, the specifications of the hydraulic cylinders are large, so the displacement of the pumps is required to be increased simultaneously. To avoid pump suction, the flow rate of the oil inlet pipeline must be controlled below 1.2m / s, and the required oil inlet pipe size needs to be increased simultaneously.

[0004] In addition, the increase in the volume of the hydraulic oil tank further compresses the space between the hydraulic oil tank and the gearbox. The pipelines of the hydraulic pump oil supply system need to be arranged in this space, and oil needs to be supplied to multiple pumps. The gearbox test port is set toward the oil tank, and the pipelines need to avoid the gearbox test port. In other words, how to reasonably arrange the oil suction pipelines in a narrow space without affecting the disassembly and assembly of the gearbox is a difficult problem.

[0005] Moreover, the gearbox is connected to the drive shaft, and the problem of the drive shaft falling and hitting the oil suction pipe must be avoided. Ensuring safety makes the layout of the pipeline more difficult. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention aims to provide a hydraulic pump oil suction pipeline structure.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0008] A hydraulic pump oil suction pipeline structure comprises an oil inlet component and a heat dissipation pump oil suction pipe, the heat dissipation pump oil suction pipe is arranged on the upper side of a gearbox, the oil inlet component and the gearbox are set at a distance, the oil inlet component is hollow, the oil inlet component is connected with the oil outlet pipe of a fuel tank, the first side of the oil inlet component is connected with the front working pump oil suction pipe through a connecting pipe, the side of the connecting pipe is connected with the brake pump oil suction pipe, the brake pump oil suction pipe and the front working pump oil suction pipe extend to the upper side of the oil inlet component respectively, the top side of the oil inlet component is connected with the rear working pump oil suction pipe, the second side of the oil inlet component is connected with the fan pump oil suction pipe, the first side and the second side of the oil inlet component are arranged opposite to each other, the rear working pump oil suction pipe and the fan pump oil suction pipe are bent toward the direction of the fan pump respectively and avoid the gearbox test port, and the oil inlet component is connected to the steering pump oil suction pipe on the side opposite to the oil outlet pipe of the fuel tank.

[0009] A hydraulic pump oil suction pipeline structure as described above, the brake pump oil suction pipe includes a brake pump oil suction hose, the brake pump oil suction hose is connected to the connecting pipe, the brake pump oil suction hose is connected to the brake pump oil suction steel pipe, and the brake pump oil suction steel pipe is provided with at least two bending sections so that the brake pump oil suction steel pipe comes to the oil pumping port of the brake pump.

[0010] In a hydraulic pump oil suction pipeline structure as described above, the upper side of the brake pump oil suction hose is bent toward the top side of the gearbox, the brake pump oil suction steel pipe is located on the top side of the gearbox, the brake pump oil suction steel pipe includes multiple sections, two adjacent sections are fixedly connected, and the brake pump oil suction steel pipe is fixed to the brake pump by a pipe clamp.

[0011] A hydraulic pump oil suction pipeline structure as described above, wherein the middle section of the front working pump oil suction pipe is bent, and the upper side of the front working pump oil suction pipe is deviated to the other side of the brake pump oil suction pipe to be connected to the front working pump;

[0012] The heat dissipation pump oil suction pipe comprises a plurality of sections of bent steel pipes.

[0013] In the hydraulic pump oil suction pipeline structure as described above, the steering pump oil suction pipe goes around from the bottom of the gearbox to the rear side of the gearbox and is connected to the steering pump.

[0014] A hydraulic pump oil suction pipeline structure as described above, the steering pump oil suction pipe includes a steering pump main oil suction hose bent to the gearbox side, the steering pump main oil suction hose is connected to the steering pump oil suction steel pipe, the steering pump oil suction steel pipe is bent relative to the steering pump main oil suction hose, and the steering pump main oil suction steel pipe is connected to the steering pump oil suction hose.

[0015] A hydraulic pump oil suction pipeline structure as described above, wherein the steering pump main oil suction steel pipe is located below the gearbox to avoid the transmission shaft, the steering pump oil suction hose is located at the rear side of the gearbox, the steering pump oil suction hose is bent upward, and two steering pump oil suction hoses are provided;

[0016] The steering pump oil suction hose comprises a first vertical pipe, a first inclined pipe and a first pipe which are connected in sequence, and the first pipe is connected to the steering pump through a steel pipe.

[0017] A hydraulic pump oil suction pipeline structure as described above, wherein the rear working pump oil suction pipe includes a third vertical pipe, a third inclined pipe and a third L-shaped pipe connected in sequence, and the third L-shaped pipe is connected to the rear working pump; the fan pump oil suction pipe includes a fourth horizontal pipe, a fourth inclined pipe and a fourth pipe connected in sequence, and the fourth pipe is connected to the fan pump.

[0018] In the hydraulic pump oil suction pipeline structure as described above, the oil inlet component is an oil inlet block, a mounting seat is arranged at the bottom of the oil inlet block, the oil inlet block is arranged at the same height as the oil outlet of the oil tank, and the oil inlet block is arranged relative to the oil outlet toward the rear fan pump.

[0019] In a second aspect, the present invention further discloses a method for installing a hydraulic pump oil suction pipeline structure, comprising the following contents:

[0020] An oil inlet component is arranged on one side of the oil tank, and the oil inlet component is connected to the oil tank through an oil outlet pipe of the oil tank;

[0021] A connecting pipe is provided on the first side of the oil inlet component, the connecting pipe is communicated with the front working pump oil suction pipe, the side of the connecting pipe is communicated with the brake pump oil suction pipe, and the brake pump oil suction pipe and the front working pump oil suction pipe extend to the upper side of the oil inlet component respectively;

[0022] The top side of the oil inlet component is connected with the oil suction pipe of the rear working pump;

[0023] The second side of the oil inlet component is connected to the fan pump oil suction pipe, and the rear working pump oil suction pipe and the fan pump oil suction pipe are bent toward the fan pump and avoid the gearbox test port respectively;

[0024] The oil inlet component is connected to the steering pump oil suction pipe on one side relative to the oil outlet pipe of the oil tank;

[0025] A heat sink pump oil suction pipe is arranged on the upper side of the gearbox, and one end of the heat sink pump oil suction pipe is connected to the oil tank.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1) In the present invention, the heat dissipation pump oil suction pipe is arranged by utilizing the space on the upper side of the gearbox, and an oil inlet component is also provided. A connecting pipe is provided on the first side of the oil inlet component, and oil is supplied to the brake pump and the front working pump through the connecting pipe. A rear working pump oil suction pipe is provided on the top of the oil inlet component, and a fan pump oil suction pipe is provided on the second side. The oil inlet component is also provided with a steering oil suction pump, which fully utilizes the space and is reasonably arranged so that the whole can supply oil to multiple pumps separately without affecting the normal installation or disassembly of the gearbox.

[0028] 2) In the present invention, considering the large size of the gearbox and the small layout space, the heat sink pump oil suction pipe is arranged on the upper part of the gearbox. Since the height space between the heat sink pump and the gearbox is small, a steel pipe formed by welding multiple bent pipes is selected to effectively transition the smaller space.

[0029] 3) In order to avoid the test port of the gearbox in the present invention, combined with the setting positions of the rear working pump and the fan pump, the rear working pump oil suction pipe and the fan pump oil suction pipe are arranged one above and one below and opposite to each other, leaving the gearbox test port empty.

[0030] 4) The steering pump oil suction pipe is reasonably arranged in the present invention. Due to the torque requirement of the gearbox power take-off port, if all the pumps are arranged on the side close to the fuel tank, the torque will be too large and it will be difficult to achieve. Steering is a major action of the loader, and the steering is frequent and the pressure is relatively large. It needs to be arranged on a separate power take-off port. The power take-off port far away from the fuel tank is selected. The direction of the pipeline is selected to bypass the rear drive shaft from the bottom. In order to prevent the rear drive shaft from falling and hitting the oil suction pipe, causing oil leakage or even unable to turn, the main oil suction pipe of the steering pump is arranged on the side close to the gearbox, and a steering pump oil suction steel pipe is set to support the steering pump oil suction hose, which supports the entire steering pump oil suction pipe and avoids vibration and looseness due to excessive length of the hose. Leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0032] Figure 1 It is a front view of a hydraulic pump oil suction pipeline structure according to one or more embodiments of the present invention.

[0033] Figure 2 is a side view of a hydraulic pump oil suction pipeline structure according to one or more embodiments of the present invention.

[0034] Figure 3 It is a front view of a hydraulic pump oil suction pipeline structure and a gearbox according to one or more embodiments of the present invention.

[0035] Figure 4 It is a specific structural schematic diagram of a hydraulic pump oil suction pipeline structure according to one or more embodiments of the present invention.

[0036] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0037] Among them: 1. Mounting seat; 2. Front working pump oil suction pipe; 3. Brake pump oil suction hose; 4. Brake pump oil suction steel pipe; 5. Double gear pump; 6. Radiator pump oil suction pipe; 7. Front working pump; 8. Rear working pump; 9. Fan pump; 10. Fan pump oil suction pipe; 11. Steering pump oil suction hose; 12. Steering pump oil suction steel pipe; 13. Steering pump main oil suction hose; 14. Steering pump; 15. Intermediate transmission shaft; 16. Gearbox; 17. Front transmission shaft; 18. Rear transmission shaft; 19. Connecting pipe; 20. Rear working pump oil suction pipe; 21. Oil inlet component; 22. L-shaped fixing seat;

[0038] 2-1. The fifth vertical tube, 2-2. The fifth inclined tube, 2-3. The fifth tube;

[0039] 3-1. The second vertical tube, 3-2. The second inclined tube, 3-3. The second tube;

[0040] 4-1. First L-shaped tube, 4-2. Connecting tube, 4-3. Second L-shaped tube;

[0041] 10-1. The fourth horizontal tube, 10-2. The fourth inclined tube, 10-3. The fourth tube;

[0042] 11-1. The first vertical tube, 11-2. The first inclined tube, 11-3. The first tube;

[0043] 20-1. The third vertical tube, 20-2. The third inclined tube, 20-3. The third L-shaped tube. DETAILED DESCRIPTION

[0044] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0046] As introduced in the background technology, in the prior art, how to reasonably arrange the oil supply pipeline in a narrow space. In order to solve the above technical problem, the present invention proposes a hydraulic pump oil suction pipeline structure.

[0047] Embodiment 1

[0048] In a typical embodiment of the present invention, reference is made to Figure 1 , Figure 2 and Figure 3As shown, a hydraulic pump oil suction pipeline structure includes an oil inlet component and a radiator pump oil suction pipe 6, the radiator pump oil suction pipe 6 is arranged on the upper side of the gearbox, the oil inlet component and the gearbox are set at a distance, the oil inlet component is located at the lower side of the gearbox and is set below the gearbox test port, the oil inlet component is hollow, the oil inlet component is connected to the oil outlet pipe of the oil tank, the first side of the oil inlet component is connected to the front working pump oil suction pipe 2 through the connecting pipe 19, the side of the connecting pipe 19 is connected to the brake pump oil suction pipe, the brake pump oil suction pipe and the front working pump oil suction pipe 2 extend to the upper side of the oil inlet component respectively, the top side of the oil inlet component 21 is connected to the rear working pump oil suction pipe 20, the second side of the oil inlet component is connected to the fan pump oil suction pipe 10, the first side and the second side of the oil inlet component 21 are arranged opposite to each other, the rear working pump oil suction pipe 20 and the fan pump oil suction pipe 10 are bent toward the fan pump direction and avoid the gearbox test port respectively, and the oil inlet component is connected to the steering pump oil suction pipe on the side relative to the tank oil outlet pipe.

[0049] In this embodiment, the radiator pump oil suction pipe 6 is specifically a radiator pump oil suction hose, which is arranged above the gearbox and connected to the upper side of the oil tank. The radiator pump oil suction pipe 6 is bent downward to be connected to the double gear pump.

[0050] refer to Figure 3 As shown, the gearbox 16 has a front transmission shaft 17, and a rear transmission shaft 18 is arranged at the rear side of the gearbox to be connected to the engine. The gearbox is connected to the intermediate transmission shaft 15. Therefore, the layout of each pipeline needs to avoid the gearbox and the transmission shaft connected thereto.

[0051] It should be noted that the steering pump oil suction pipe is routed from the bottom of the gearbox 16 to the rear side of the gearbox 16 and is connected to the steering pump 14 .

[0052] The steering pump oil suction pipe includes a steering pump main oil suction hose 13 bent to the gearbox side, that is, the steering pump main oil suction hose 13 is connected to the oil inlet component 21 through two L-shaped pipes connected up and down, the steering pump main oil suction hose 13 is located below the gearbox and is set at a distance from the bottom of the gearbox, the steering pump main oil suction hose 13 is connected to the steering pump oil suction steel pipe 12, the steering pump oil suction steel pipe 12 is bent relative to the steering pump main oil suction hose, the two are vertically connected, the steering pump main oil suction steel pipe 12 is vertically connected to the steering pump oil suction hose 11, and the steering pump oil suction hose 11 is set upward; the steering pump oil suction steel pipe 12 is supported by an L-shaped fixing seat 22, the L-shaped fixing seat 22 is fixed to the frame, the steering pump oil suction steel pipe 12 is fixed to the upper side of the L-shaped fixing seat 22 by U-shaped bolts, and the L-shaped fixing seat 22 is set below the mounting seat 1.

[0053] It is easy to understand that the steering pump main oil suction hose 13 and the steering pump main oil suction steel pipe 12 are both arranged to avoid the lower part of the transmission shaft (specifically the rear transmission shaft 18), the steering pump oil suction hose 11 is located at the rear side of the gearbox, the steering pump oil suction hose is bent upward, two steering pump oil suction hoses 11 are provided, and the two steering pump oil suction hoses 11 are spaced apart from each other, and the two steering pump oil suction hoses 11 are respectively connected to the corresponding steering pumps;

[0054] The steering pump oil suction hose 11 includes a first vertical pipe 11-1, a first inclined pipe 11-2 and a first pipe 11-3 which are connected in sequence. The first pipe 11-3 is connected to the steering pump 14 through a steel pipe. The first pipe is bent toward the steering pump 14 and the first pipe 11-3 is inclined relative to the vertical direction.

[0055] It should be noted that the brake pump oil suction pipe includes a brake pump oil suction hose 3, the brake pump oil suction hose 3 is connected to the connecting pipe 19, the brake pump oil suction hose 3 is connected to the brake pump oil suction steel pipe 4, and the brake pump oil suction steel pipe 4 is provided with at least two bending sections so that the brake pump oil suction steel pipe reaches the oil pumping port of the brake pump.

[0056] The upper side of the brake pump oil suction hose 3 is bent toward the top side of the gearbox. The brake pump oil suction steel pipe 4 is located on the top side of the gearbox. The brake pump oil suction steel pipe 4 includes multiple sections, and two adjacent sections are fixedly connected. The brake pump oil suction steel pipe is fixed to the brake pump by a pipe clamp (the brake pump here is a double gear pump 5, that is, a combination of a brake pump and a cooling pump).

[0057] Specifically, refer to Figure 4 As shown, the brake pump oil suction hose 3 includes a second vertical tube 3-1, a second inclined tube 3-2 and a second tube 3-3 connected in sequence, the second tube 3-3 is connected to the brake pump oil suction steel pipe 4, the second tube is bent toward the brake pump, and the second inclined tube is inclined toward the side close to the brake pump. In order to bypass the brake pump and the gearbox part, the brake pump oil suction steel pipe 4 includes a first L-shaped tube 4-1, a connecting tube 4-2 and a second L-shaped tube 4-3 connected in sequence, and the first L-shaped tube and the second L-shaped tube are connected by arc transition on both sides. In order to avoid the vibration of the vehicle body causing the brake pump oil suction steel pipe 4 to vibrate and loosen, the first L-shaped tube is fixed by a pipe clamp using a threaded hole of the brake pump.

[0058] It is easy to understand that because the direction of the brake pump oil pumping port is on the non-tank side, and the height distance between the brake pump and the gearbox is very small, for the convenience of layout, the diameter of the brake pump oil suction hose 3 is larger than the diameter of the brake pump oil suction steel pipe 4.

[0059] In this embodiment, the rear working pump oil suction pipe 20 is a rear working pump oil suction rubber hose, which includes a third vertical pipe 20-1, a third inclined pipe 20-2 and a third L-shaped pipe 20-3 connected in sequence. The third L-shaped pipe is connected to the rear working pump 8 through a steel pipe, and the transition point of the third L-shaped pipe is an arc transition; the fan pump oil suction pipe 10 is a fan pump oil suction hose, which specifically includes a fourth horizontal pipe 10-1, a fourth inclined pipe 10-2 and a fourth pipe 10-3 connected in sequence. The fourth pipe is connected to the fan pump 9, and the fourth pipe is bent toward the fan pump 9.

[0060] In addition, the front working pump oil suction pipe 2 is a front working pump oil suction hose, and the diameter of the front working pump oil suction pipe 2 is larger than the diameter of the brake pump oil suction hose 3. Therefore, the front working pump oil suction pipe 2 is connected with the connecting pipe, and the brake pump oil suction hose 3 is led out from the side of the connecting pipe. The middle section of the front working pump oil suction hose is inclined upward, and the upper side of the front working pump oil suction pipe 2 is biased to the other side of the brake pump oil suction pipe to be connected with the front working pump 7. The front working pump oil suction pipe 2 includes a fifth vertical pipe 2-1, a fifth inclined pipe 2-2 and a fifth pipe 2-3 connected in sequence. The fifth pipe is connected with the front working pump 7 through a steel pipe. The fifth pipe is bent toward the front working pump 7. The inclination angle of the fifth inclined pipe relative to the horizontal plane is greater than the inclination angle of the fourth inclined pipe relative to the horizontal plane.

[0061] It should be noted that, from one side to the other side of the top of the gearbox, a double gear pump 5, a front working pump 7, a rear working pump 8 and a fan pump 9 are arranged in sequence, and a steering pump 14 is arranged on the rear side of the rear working pump 8. Two steering pumps 14 are provided, and the steering pump and the rear working pump 8 are arranged side by side. Each pump is located at the center of the top of the gearbox (arranged along the length direction of the vehicle) and is separately connected to the gearbox, so that one end of each oil suction pipe connected to the corresponding pump is arranged toward the top side of the gearbox.

[0062] In this embodiment, the oil inlet component 21 is an oil inlet block, and a mounting seat 1 is arranged at the bottom of the oil inlet block. The mounting seat 1 is L-shaped, and the top side of the mounting seat 1 is fixed to the bottom of the oil inlet block. The other side of the mounting seat 1 is connected to the frame. The center of the oil inlet block and the center of the oil outlet of the fuel tank are arranged at the same height, and the oil inlet block is arranged relative to the oil outlet toward the direction of the rear fan pump 9, so that the oil inlet component is close to the axis of the oil outlet of the fuel tank, which is convenient for the arrangement of the oil outlet hose of the fuel tank, and it is also ensured that it does not affect the installation and disassembly of the gearbox assembly.

[0063] It should be noted that the parts connecting each pipeline to the oil inlet block are all steel pipes, and the steel pipes are connected to the corresponding rubber hoses.

[0064] Embodiment 2

[0065] This embodiment discloses a method for installing a hydraulic pump oil suction pipeline structure, including the following contents:

[0066] An oil inlet component is arranged on one side of the oil tank, and the oil inlet component is connected to the oil tank through an oil outlet pipe of the oil tank;

[0067] A connecting pipe is provided on the first side of the oil inlet component, the connecting pipe is communicated with the front working pump oil suction pipe, the side of the connecting pipe is communicated with the brake pump oil suction pipe, and the brake pump oil suction pipe and the front working pump oil suction pipe extend to the upper side of the oil inlet component respectively;

[0068] The top side of the oil inlet component is connected with the oil suction pipe of the rear working pump;

[0069] The second side of the oil inlet component is connected to the fan pump oil suction pipe, and the rear working pump oil suction pipe and the fan pump oil suction pipe are bent toward the fan pump and avoid the gearbox test port respectively;

[0070] The oil inlet component is connected to the steering pump oil suction pipe on one side relative to the oil outlet pipe of the oil tank;

[0071] A heat sink pump oil suction pipe is arranged on the upper side of the gearbox, and one end of the heat sink pump oil suction pipe is connected to the oil tank.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydraulic pump oil suction pipeline structure, characterized in that: The oil inlet component comprises an oil inlet component and a radiator pump oil suction pipe, the radiator pump oil suction pipe is arranged on the upper side of the gearbox, the oil inlet component and the gearbox are set at a distance, the oil inlet component is hollow, the oil inlet component is connected with the oil outlet pipe of the fuel tank, the first side of the oil inlet component is connected with the front working pump oil suction pipe through a connecting pipe, the side of the connecting pipe is connected with the brake pump oil suction pipe, the brake pump oil suction pipe and the front working pump oil suction pipe extend to the upper side of the oil inlet component respectively, the top side of the oil inlet component is connected with the rear working pump oil suction pipe, the second side of the oil inlet component is connected with the fan pump oil suction pipe, the first side and the second side of the oil inlet component are arranged opposite to each other, the rear working pump oil suction pipe and the fan pump oil suction pipe are bent toward the direction of the fan pump respectively and avoid the gearbox test port, and the oil inlet component is connected to the steering pump oil suction pipe on the side relative to the fuel tank oil outlet pipe.

2. A hydraulic pump oil suction pipeline structure according to claim 1, characterized in that: The brake pump oil suction pipe includes a brake pump oil suction hose, which is connected to the connecting pipe and connected to the brake pump oil suction steel pipe. The brake pump oil suction steel pipe is provided with at least two bending sections so that the brake pump oil suction steel pipe reaches the oil pumping port of the brake pump.

3. A hydraulic pump oil suction pipeline structure according to claim 2, characterized in that: The upper side of the brake pump oil suction hose is bent toward the top side of the gearbox. The brake pump oil suction steel pipe is located on the top side of the gearbox. The brake pump oil suction steel pipe includes multiple sections, and two adjacent sections are fixedly connected. The brake pump oil suction steel pipe is fixed to the brake pump by a pipe clamp.

4. The hydraulic pump oil suction pipeline structure according to claim 1, characterized in that: The middle section of the front working pump suction pipe is bent, and the main suction steel pipe of the steering pump is located below the gearbox to avoid the transmission shaft fold. The upper side of the front working pump suction pipe is deviated to the other side of the brake pump suction pipe to connect with the front working pump. The heat dissipation pump oil suction pipe comprises a plurality of sections of bent steel pipes.

5. The hydraulic pump oil suction pipeline structure according to claim 1, characterized in that: The steering pump oil suction pipe is wound from the bottom of the gearbox to the rear side of the gearbox and is connected with the steering pump.

6. The hydraulic pump oil suction pipeline structure according to claim 5, characterized in that: The steering pump oil suction pipe includes a steering pump main oil suction hose bent to the gearbox side, the steering pump main oil suction hose is connected to the steering pump oil suction steel pipe, the steering pump oil suction steel pipe is bent relative to the steering pump main oil suction hose, and the steering pump main oil suction steel pipe is connected to the steering pump oil suction hose.

7. The hydraulic pump oil suction pipeline structure according to claim 6, characterized in that: The main oil suction steel pipe of the steering pump is located below the gearbox to avoid the transmission shaft. The oil suction rubber hose of the steering pump is located at the rear side of the gearbox. The oil suction rubber hose of the steering pump is bent upward. Two oil suction rubber hoses of the steering pump are provided. The steering pump oil suction hose comprises a first vertical pipe, a first inclined pipe and a first pipe which are connected in sequence, and the first pipe is connected to the steering pump through a steel pipe.

8. The hydraulic pump oil suction pipeline structure according to claim 1, characterized in that: The rear working pump oil suction pipe includes a third vertical pipe, a third inclined pipe and a third L-shaped pipe connected in sequence, and the third L-shaped pipe is connected to the rear working pump; the fan pump oil suction pipe includes a fourth horizontal pipe, a fourth inclined pipe and a fourth pipe connected in sequence, and the fourth pipe is connected to the fan pump.

9. The hydraulic pump oil suction pipeline structure according to claim 1, characterized in that: The oil inlet component is an oil inlet block, a mounting seat is arranged at the bottom of the oil inlet block, the oil inlet block is arranged at the same height as the oil outlet of the oil tank, and the oil inlet block is arranged in a direction toward the rear fan pump relative to the oil outlet.

10. A method for installing a hydraulic pump oil suction pipeline structure according to any one of claims 1 to 9, characterized in that: It includes the following: An oil inlet component is arranged on one side of the oil tank, and the oil inlet component is connected to the oil tank through an oil outlet pipe of the oil tank; A connecting pipe is provided on the first side of the oil inlet component, the connecting pipe is communicated with the front working pump oil suction pipe, the side of the connecting pipe is communicated with the brake pump oil suction pipe, and the brake pump oil suction pipe and the front working pump oil suction pipe extend to the upper side of the oil inlet component respectively; The top side of the oil inlet component is connected with the oil suction pipe of the rear working pump; The second side of the oil inlet component is connected to the fan pump oil suction pipe, and the rear working pump oil suction pipe and the fan pump oil suction pipe are bent toward the fan pump and avoid the gearbox test port respectively; The oil inlet component is connected to the steering pump oil suction pipe on one side relative to the oil outlet pipe of the oil tank; A heat sink pump oil suction pipe is arranged on the upper side of the gearbox, and one end of the heat sink pump oil suction pipe is connected to the oil tank.

Images