Hydraulic oil tank of mining dump truck and working method

Abstract

The invention discloses a hydraulic oil tank of a mining dump truck and a working method, and solves the problems that the oil temperature of an oil suction chamber is interfered due to too high oil return temperature and the service life of an oil return filter is inconsistent due to different long-term working conditions. According to the technical scheme, the oil tank comprises an oil tank body, an oil suction filter and an oil return filter. The oil tank body is divided into an oil suction chamber and an oil return chamber, and a plurality of openings are formed in the partition plate. The oil suction filter is arranged at the lower part of the oil suction chamber; an oil return filtering bin is arranged on the upper portion of the oil return chamber, oil return filters are arranged in the oil return filtering bin, and the oil return filters comprise the first oil return filter and the second oil return filter; the lower end of the first oil return filter is connected with one end of an oil return pipe, the other end of the oil return pipe is connected with an oil return flange on the side wall of the lower portion of the oil return chamber, and an oil return filter tail pipe is arranged at the lower end of the second oil return filter. The oil return pipe and the oil return filter tail pipe are located below the oil return filter bin.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic systems, and in particular relates to a hydraulic oil tank for a mining dump truck and a working method thereof. 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] As an important part of the hydraulic system of mining dump trucks, the internal structural layout of the hydraulic oil tank is particularly important in order to ensure the reliability and stability of the hydraulic system, reduce the heat generated by the hydraulic circuit, and improve the heat dissipation of the hydraulic system of the whole vehicle. The hydraulic oil tank should have the function of feedback of the hydraulic oil volume, oil temperature and precipitation of impurities in the hydraulic oil, but the control of oil temperature and precipitation of impurities in the hydraulic oil are particularly important. At present, due to the limitations of the size and layout of the whole vehicle, the internal structure of the oil tank is also unreasonable, and the above requirements cannot be met.

[0004] The two filters inside the existing hydraulic oil tank are respectively fixed in independent filter cartridges, and the hydraulic oil enters the filter from the side of the filter cartridge; one of the two return oil filters filters the hydraulic oil under full working conditions, and the other filters the hydraulic oil under partial working conditions, resulting in inconsistent service lives of the two filter elements; at the same time, due to structural limitations, the return oil temperature is prone to interfere with the oil temperature of the oil suction chamber, resulting in unstable operation of the hydraulic system and low working efficiency. Summary of the invention

[0005] In view of the above problems, the present invention provides a hydraulic oil tank and working method for a mining dump truck, which solves the problem that the return oil temperature is too high and causes interference with the oil temperature in the oil suction chamber, ensures the stable operation of the hydraulic system and improves work efficiency, and solves the problem of inconsistent service life of the return oil filter due to different long-term working conditions.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] In a first aspect, the present invention provides a hydraulic oil tank for a mining dump truck, comprising an oil tank body, an oil suction filter, and an oil return filter; a vertical partition plate is provided in the middle of the oil tank body, the partition plate divides the oil tank body into an oil suction chamber and an oil return chamber, and a plurality of openings are provided on the partition plate; the oil suction filter is provided at the lower part of the oil suction chamber, an oil suction flange is provided on the lower side wall of the oil suction chamber, and the oil suction filter is mounted on the oil suction flange;

[0008] An oil return filter bin is provided at the upper part of the oil return chamber, and an oil return filter is provided in the oil return filter bin. The upper end of the oil return filter is clamped with the oil return filter top seat at the top of the oil return filter bin, and the lower end of the oil return filter is clamped with the oil return filter base at the bottom of the oil return filter bin. The oil return filter includes a first oil return filter and a second oil return filter; the lower end of the first oil return filter is connected to one end of the oil return pipe, and the other end of the oil return pipe is connected to the oil return flange on the lower side wall of the oil return chamber, and the lower end of the second oil return filter is provided with an oil return filter tail pipe; the oil return pipe and the oil return filter tail pipe are arranged below the oil return filter bin.

[0009] Furthermore, the oil suction filter and the oil suction flange are both provided in plurality, and the number of the oil suction filter and the number of the oil suction flange are the same, and each oil suction flange is correspondingly installed with an oil suction filter.

[0010] Furthermore, the oil suction flange is provided with an oil pipe connecting hole for installing an external hydraulic oil pipe.

[0011] Furthermore, a limit tube of the return oil filter is arranged on the return oil filter top seat, a return oil filter cover is arranged on the upper end of the limit tube, and a compression spring is installed between the return oil filter cover and the return oil filter.

[0012] Furthermore, the oil return pipe and the oil return flange are both provided in plurality, and the number of the oil return pipe and the number of the oil return flange are the same, and one oil return pipe is correspondingly installed on each oil return flange.

[0013] Furthermore, the oil return flange is also provided with an oil pipe connecting hole for installing an external hydraulic oil pipe.

[0014] Furthermore, a refueling port is provided on the top plate of the oil suction chamber, and an air filter is installed at the refueling port to release the gas pressure in the oil tank and prevent impurities from entering the oil tank.

[0015] Furthermore, an oil receiving box is provided below the refueling port and inside the oil suction chamber to prevent the hydraulic oil from overflowing through the refueling port and the air filter; a plurality of overflow holes are provided on the side wall of the oil receiving box to allow the hydraulic oil in the oil receiving box to flow into the oil suction chamber.

[0016] Furthermore, the oil return filter tail pipe is a circular tubular structure with one end open, and a plurality of micropores are arranged on the side wall. The open end of the oil return filter tail pipe is connected to the second oil return filter.

[0017] In a second aspect, the present invention further provides a method for using a hydraulic oil tank of a mining dump truck, comprising:

[0018] S1. The hydraulic pump in the hydraulic system of the mining dump truck is connected to the oil suction flange through a hydraulic pipeline. The hydraulic oil enters the hydraulic pump from the oil suction filter and then flows into the working parts from the hydraulic pump;

[0019] S2. The hydraulic oil returns from the working component to the hydraulic pipeline, and is connected to the return oil flange through the hydraulic pipeline. Then, the hydraulic oil is introduced from the bottom of the return oil filter bin into the first return oil filter through multiple return oil pipes at the bottom of the return oil filter bin. After the hydraulic oil is filtered once, it enters the return oil filter bin, and then passes through the second return oil filter for secondary filtration and returns to the return oil chamber through the return oil filter tail pipe. The hydraulic oil returned to the oil tank by the hydraulic system flows from the return oil chamber through several openings on the partition plate into the oil suction chamber, and this process is repeated in sequence.

[0020] Compared with the prior art, the present invention has the following advantages and positive effects:

[0021] The present invention divides the oil tank body into an oil suction chamber and an oil return chamber by setting a vertical partition plate, which can effectively avoid the mutual interference between the oil suction and oil return processes, make the flow of oil in the oil tank more orderly, avoid the interference of the return oil temperature on the oil temperature of the oil suction chamber, and help to ensure the stable operation of the hydraulic system; an oil suction filter is set at the lower part of the oil suction chamber to prevent impurities from entering the subsequent hydraulic system, protect related components from being damaged by impurities, and extend the service life of the equipment; an oil return filter bin is set at the upper part of the oil return chamber, and a first oil return filter and a second oil return filter are configured to perform double filtration on the return oil, which can more thoroughly remove impurities generated or mixed in the oil during the working process; an oil suction flange is set on the lower side wall of the oil suction chamber for installing the oil suction filter, which avoids the phenomenon that the return oil filter of the traditional mining dump truck is filled with oil from the side, the return oil filter is blocked at a position close to the oil inlet, and the hydraulic oil is not filtered at a far position. It also avoids the problem that the two return oil filters of the traditional mining dump truck have one full-operating condition to filter the hydraulic oil, and the other part of the operating condition to filter the hydraulic oil, and the service life of the two filter elements is inconsistent.

[0022] The return oil filter top seat of the present invention is provided with a limit tube of the return oil filter, the upper end of the limit tube is provided with a return oil filter cover plate, and a compression spring is installed between the return oil filter cover plate and the return oil filter. When the return oil filter cover plate closes the mounting hole, the compression spring is in a compressed state to prevent the return oil filter from being offset due to hydraulic shock or vehicle impact during installation and operation, which may cause the return oil filter to fall off and fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 This is the overall structural diagram of the hydraulic oil tank for a mining dump truck of the present invention;

[0025] Figure 2 This is a diagram showing the internal structure of the hydraulic oil tank of a mining dump truck of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the oil return filter of the present invention;

[0027] Figure 4 It is a schematic diagram of the partial structure of the oil receiving box and the oil filling port of the present invention.

[0028] In the figure: 1. Fuel tank body; 2. Air filter; 3. Return oil filter cover; 4. Oil suction flange; 5. Return oil flange; 6. Oil receiving box; 7. Partition plate; 8. Oil suction filter; 9. Return oil filter bin; 10. Return oil filter top seat; 11. First return oil filter; 12. Return oil filter base; 13. Return oil filter tail pipe; 14. Return oil pipe; 15. Compression spring; 16. Second return oil filter; 17. Refueling port; 18. Overflow hole. DETAILED DESCRIPTION

[0029] 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.

[0030] 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;

[0031] This embodiment discloses a hydraulic oil tank for a mining dump truck, such as Figure 1-Figure 3 As shown, it includes a tank body 1, an oil suction filter 8, and an oil return filter; a vertical partition plate 7 is arranged in the middle of the tank body 1, and the partition plate 7 divides the tank body 1 into an oil suction chamber and an oil return chamber, and a plurality of openings are arranged on the partition plate 7; the oil suction filter 8 is arranged at the lower part of the oil suction chamber, and an oil suction flange 4 is arranged on the lower side wall of the oil suction chamber, and the oil suction filter 8 is installed on the oil suction flange 4; by arranging the vertical partition plate 7 to divide the tank body 1 into the oil suction chamber and the oil return chamber, it can effectively avoid the mutual interference between the oil suction and oil return processes, make the flow of oil in the tank more orderly, and help to ensure the stable operation of the hydraulic system; the oil suction filter 8 is arranged at the lower part of the oil suction chamber, which can preliminarily filter the sucked oil, intercept impurities, prevent them from entering the subsequent hydraulic system, protect related components from being damaged by impurities, and extend the service life of the equipment;

[0032] The upper part of the return oil chamber is provided with a return oil filter bin 9, and a return oil filter is provided in the return oil filter bin 9. The upper end of the return oil filter is clamped with the return oil filter top seat 10 at the top of the return oil filter bin 9, and the lower end of the return oil filter is clamped with the return oil filter base 12 at the bottom of the return oil filter bin 9. The return oil filter includes a first return oil filter 11 and a second return oil filter 16. The return oil filter bin 9 is provided at the upper part of the return oil chamber, and the first return oil filter 11 and the second return oil filter 16 are configured to perform double filtration on the return oil, which can more thoroughly remove impurities generated or mixed in the oil during the working process, and further improve the oil The quality of the fluid is ensured to ensure the reliability of the hydraulic system; the lower end of the first return oil filter 11 is connected to one end of the return oil pipe 14, and the other end of the return oil pipe 14 is connected to the return oil flange 5 on the lower side wall of the return oil chamber, and the lower end of the second return oil filter 16 is provided with a return oil filter tail pipe 13; the return oil pipe 14 and the return oil filter tail pipe 13 are arranged below the return oil filter bin 9; the lower side wall of the suction chamber is provided with an oil suction flange 4 for installing the suction oil filter 8, which avoids the traditional mining dump truck return oil filter from the side, the return oil filter is blocked at the position close to the oil inlet, and the hydraulic oil is not filtered at the far position. It also avoids the problem of the two return oil filters of the traditional mining dump truck, one of which filters the hydraulic oil under full working conditions and the other filters the hydraulic oil under partial working conditions, and the service life of the two filter elements is inconsistent.

[0033] The oil suction filter 8 and the oil suction flange 4 are both provided in plurality, and the number of the oil suction filters 8 and the oil suction flange 4 is the same, and each oil suction flange 4 is correspondingly installed with an oil suction filter 8, and the oil suction flange 4 is provided with an oil pipe connecting hole for installing an external hydraulic oil pipe; the hydraulic pump suction port in the hydraulic system of the mining dump truck is connected to the oil suction flange 4 through a hydraulic oil pipe, and the hydraulic oil enters the hydraulic pump from the oil suction filter 8, and then flows into the working parts from the hydraulic pump, so that the sucked oil can be preliminarily filtered to intercept impurities and prevent them from entering the subsequent hydraulic system, thereby extending the service life of the equipment.

[0034] The upper end of the return oil filter is clamped with the return oil filter top seat 10 at the top of the return oil filter bin 9, and the lower end of the return oil filter is clamped with the return oil filter base 12 at the bottom of the return oil filter bin 9. A limit tube of the return oil filter is provided on the return oil filter top seat 10, and a return oil filter cover plate 3 is provided on the upper end of the limit tube. A compression spring 15 is installed between the return oil filter cover plate 3 and the return oil filter. When the return oil filter cover plate 3 closes the mounting hole, the compression spring 15 is in a compressed state to prevent the return oil filter from being offset by hydraulic shock or vehicle shock during installation and operation, thereby causing the return oil filter to fall off and fail. An oil through hole is provided on the return oil filter base 12 for returning the hydraulic oil to the return oil filter bin 9 and filtering the hydraulic oil from the return oil filter bin 9 into the return oil chamber.

[0035] The oil return pipe 14 and the oil return flange 5 are both provided in plurality, and the number of the oil return pipes 14 and the oil return flange 5 is the same, one oil return pipe 14 is installed on each oil return flange 5, and the oil return flange 5 is also provided with an oil pipe connecting hole for installing an external hydraulic oil pipe, which returns to the hydraulic oil pipe from the working part, enters the oil return pipe 14 through the hydraulic oil pipe connected to the oil return flange 5, and enters the oil tank after being filtered.

[0036] The top plate of the oil suction chamber is provided with a refueling port 17, and an air filter 2 is installed at the refueling port 17. The main function of the air filter 2 is to inhale or exhaust air when the hydraulic oil is added and the liquid level in the oil tank changes, and to prevent impurities from entering the oil tank. When the vehicle is driving, the hydraulic oil will shake inside the oil tank, and when the shaking is severe, the air will overflow from the air filter 2. Figure 4 As shown, an oil receiving box 6 is provided at the lower part of the refueling port 17 and inside the oil suction chamber to prevent the hydraulic oil from overflowing through the refueling port 17 and the air filter 2; a plurality of overflow holes 18 are provided on the side wall of the oil receiving box 6 to allow the hydraulic oil splashed into the oil receiving box 6 to flow into the oil suction chamber. When the hydraulic oil is added through the refueling port 17, the hydraulic oil flows into the oil receiving box 6 and flows into the oil tank through the overflow holes 18. When the hydraulic oil shakes inside the oil tank during vehicle driving, a small amount of hydraulic oil will enter the inside of the oil receiving box 6 through the overflow holes 18 on the oil receiving box 6, thereby achieving the effect of preventing the hydraulic oil from overflowing.

[0037] The working method comprises the following steps:

[0038] S1. The hydraulic pump suction port in the hydraulic system of a mining dump truck is connected to the suction flange 4 through a hydraulic pipeline, and the hydraulic oil enters the hydraulic pump from the suction filter 8 and then flows into the working parts from the hydraulic pump;

[0039] S2. The hydraulic oil returns from the working part to the hydraulic pipeline, and is connected to the return oil flange 5 through the hydraulic pipeline. Then, the hydraulic oil is introduced into the first return oil filter 11 from the bottom of the return oil filter bin 9 through multiple return oil pipes 14 at the lower part of the return oil filter bin 9. After the hydraulic oil is filtered once, it enters the return oil filter bin 9, and then passes through the second return oil filter 16 for secondary filtration and returns to the return oil chamber through the return oil filter tail pipe 13. The hydraulic oil returned to the oil tank by the hydraulic system flows out of the return oil chamber through several openings on the partition plate 7 and flows into the oil suction chamber; the impurities with higher density inside the hydraulic oil can be settled and remain in the return oil chamber, reducing the pollution to the oil suction filter 8 and extending the service life of the filter. The method of returning oil from the bottom can realize that the hydraulic oil enters from the entire return oil filter screen, avoiding the phenomenon that the return oil filter of the traditional mining dump truck enters from the side, the filter is blocked at the position close to the oil inlet, and the hydraulic oil is not filtered at the far position. It also avoids the problem that the two return oil filters of the traditional mining dump truck have one full-condition filter for hydraulic oil and the other partial-condition filter for hydraulic oil, and the service life of the two filter elements is inconsistent.

[0040] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A hydraulic oil tank for a mining dump truck, characterized in that: It comprises an oil tank body, an oil suction filter and an oil return filter; a vertical partition plate is arranged in the middle of the oil tank body, the partition plate divides the oil tank body into an oil suction chamber and an oil return chamber, and a plurality of openings are arranged on the partition plate; the oil suction filter is arranged at the lower part of the oil suction chamber, an oil suction flange is arranged on the lower side wall of the oil suction chamber, and the oil suction filter is mounted on the oil suction flange; An oil return filter bin is provided at the upper part of the oil return chamber, and an oil return filter is provided in the oil return filter bin. The upper end of the oil return filter is clamped with the oil return filter top seat at the top of the oil return filter bin, and the lower end of the oil return filter is clamped with the oil return filter base at the bottom of the oil return filter bin. The oil return filter includes a first oil return filter and a second oil return filter; the lower end of the first oil return filter is connected to one end of the oil return pipe, and the other end of the oil return pipe is connected to the oil return flange on the lower side wall of the oil return chamber, and the lower end of the second oil return filter is provided with an oil return filter tail pipe; the oil return pipe and the oil return filter tail pipe are arranged below the oil return filter bin.

2. A mining dump truck hydraulic oil tank as claimed in claim 1, characterized in that: The oil suction filter and the oil suction flange are both provided in plurality, and the number of the oil suction filter and the number of the oil suction flange are the same, and each oil suction flange is correspondingly provided with an oil suction filter.

3. A mining dump truck hydraulic oil tank as claimed in claim 2, characterized in that: The oil suction flange is provided with an oil pipe connecting hole for installing an external hydraulic oil pipe.

4. A mining dump truck hydraulic oil tank as claimed in claim 1, characterized in that: The return oil filter top seat is provided with a limit tube of the return oil filter, the upper end of the limit tube is provided with a return oil filter cover plate, and a compression spring is installed between the return oil filter cover plate and the return oil filter.

5. The hydraulic oil tank for a mining dump truck according to claim 1, characterized in that: The oil return pipe and the oil return flange are both provided in plurality, and the number of the oil return pipe and the number of the oil return flange are the same, and one oil return pipe is correspondingly installed on each oil return flange.

6. A mining dump truck hydraulic oil tank as claimed in claim 5, characterized in that: The oil return flange is also provided with an oil pipe connection hole for installing an external hydraulic oil pipe.

7. A mining dump truck hydraulic oil tank as claimed in claim 1, characterized in that: A refueling port is arranged on the top plate of the oil suction chamber, and an air filter is installed at the refueling port to release the gas pressure in the oil tank and prevent impurities from entering the oil tank.

8. A mining dump truck hydraulic oil tank as claimed in claim 7, characterized in that: An oil receiving box is arranged below the oil filling port and inside the oil suction chamber to prevent the hydraulic oil from overflowing through the oil filling port and the air filter; a plurality of overflow holes are arranged on the side wall of the oil receiving box to allow the hydraulic oil in the oil receiving box to flow into the oil suction chamber.

9. A mining dump truck hydraulic oil tank as claimed in claim 1, characterized in that: The oil return filter tail pipe is a circular tubular structure with one end open, and a plurality of micropores are arranged on the side wall. The open end of the oil return filter tail pipe is connected to the second oil return filter.

10. A method for operating a hydraulic oil tank of a mining dump truck according to any one of claims 2 to 9, characterized in that: include: S1. The hydraulic pump in the hydraulic system of the mining dump truck is connected to the oil suction flange through a hydraulic pipeline. The hydraulic oil enters the hydraulic pump from the oil suction filter and then flows into the working parts from the hydraulic pump; S2. The hydraulic oil returns from the working component to the hydraulic pipeline, and is connected to the return oil flange through the hydraulic pipeline. Then, the hydraulic oil is introduced from the bottom of the return oil filter bin into the first return oil filter through multiple return oil pipes at the bottom of the return oil filter bin. After the hydraulic oil is filtered once, it enters the return oil filter bin, and then passes through the second return oil filter for secondary filtration and returns to the return oil chamber through the return oil filter tail pipe. The hydraulic oil returned to the oil tank by the hydraulic system flows from the return oil chamber through several openings on the partition plate into the oil suction chamber, and this process is repeated in sequence.

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