Hydraulic steering device for mining electric vehicle

Abstract

The utility model discloses a mining electric vehicle steering hydraulic device which comprises a hydraulic pump, one side of the hydraulic pump is fixedly connected with a hydraulic steering gear through a pipeline, one side of the hydraulic steering gear is fixedly connected with a steering oil cylinder through a pipeline, one side of the hydraulic pump is provided with a filter, and a filter residue cleaning mechanism is arranged in the filter. One side of the filter is fixedly connected with an oil tank through a pipeline, one side of the hydraulic steering gear is fixedly provided with an oil return pipe, and one end of the oil return pipe is fixedly connected with the oil tank. The filter has the following effects that the pressure difference sensor in the filter residue cleaning mechanism is used for monitoring the oil pressure on the two sides of the filter screen, when the pressure difference on the two sides of the filter screen is large after the filter screen is blocked by filter residues, the buzzer can give an alarm, hydraulic oil can be injected into the filter through the cleaning pipe in time, backwashing of the filter screen is achieved, and the service life of the filter screen is prolonged. Filter residues adsorbed on the surface of the filter screen are flushed and discharged through the discharge pipe, efficient cleaning of the filter screen is achieved, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic steering, in particular to a steering hydraulic device for a mining electric vehicle. Background Art

[0002] In mining environments, electric mining vehicles serve as crucial transportation and operational tools. The stability and precision of their steering systems are directly linked to mine production efficiency and operational safety. To facilitate flexible steering in complex terrain and confined spaces, ensuring smooth and precise directional changes, existing electric mining vehicles are commonly equipped with hydraulic steering systems. These systems utilize the flow of hydraulic oil to transmit force, enabling steering operations. They offer advantages such as compact design and high transmission efficiency.

[0003] However, when used on mining vehicles, due to the presence of a large amount of mineral impurities in the mining environment, these impurities can easily mix into the hydraulic oil, posing a threat to the normal operation of the hydraulic system. In order to remove impurities in the hydraulic oil, prevent mineral impurities from damaging the hydraulic system, ensure the stable operation of the system and extend its service life, filters are usually installed in existing steering hydraulic devices to filter the hydraulic oil. Despite this, filters in existing steering hydraulic devices still have obvious shortcomings. Specifically, after the filter has been used for a period of time, the internal filter screen or filter element will gradually be clogged by accumulated impurities, which not only reduces the oil flow through the filter, resulting in the system being unable to obtain sufficient pressure oil supply, thereby affecting the response speed and steering accuracy of the steering hydraulic system, but also when the filter screen or filter element needs to be replaced, the operation process is often cumbersome, and the impurity liquid accumulated inside is not easy to completely remove, which brings great inconvenience to daily maintenance. Utility Model Content

[0004] In view of the problems in the related technologies, the present invention proposes a steering hydraulic device for a mining electric vehicle to overcome the above technical problems existing in the existing related technologies.

[0005] To this end, the specific technical solutions adopted in this utility model are as follows:

[0006] A steering hydraulic device for a mining electric vehicle includes a hydraulic pump, one side of the hydraulic pump is fixedly connected to a hydraulic steering gear via a pipeline, one side of the hydraulic steering gear is fixedly connected to a steering cylinder via a pipeline, a filter is provided on one side of the hydraulic pump, a filter residue cleaning mechanism is provided inside the filter, one side of the filter is fixedly connected to an oil tank via a pipeline, and a return oil pipe is fixedly installed on one side of the hydraulic steering gear, one end of the return oil pipe is fixedly connected to the oil tank.

[0007] Furthermore, in order to achieve backwash cleaning of the filter residue adsorbed on the filter net, the filter residue cleaning mechanism includes a filter net fixedly installed in the filter, a pressure differential sensor fixedly installed on one side of the filter net, a buzzer fixedly installed on one side of the pressure differential sensor, a cleaning pipe fixedly installed on one side of the surface of the filter, and a sewage pipe fixedly installed on the bottom of the filter.

[0008] Furthermore, in order to wipe and clean the surface of the filter, oil pipes are fixedly installed at both ends of the filter, transmission shafts are rotatably installed on both sides of the filter, both ends of the transmission shaft are rotatably installed in the oil pipes, rotating blade 1 is fixedly installed at both ends of the transmission shaft, rotating blade 2 is installed on one side of rotating blade 1, and a cleaning brush is fixedly installed on one side of rotating blade 2.

[0009] Furthermore, in order to prevent the hydraulic oil used for backwashing from entering the oil tank and the hydraulic pump when the filter is backwashed and cleaned, a solenoid valve is fixedly installed at one end of the oil pipe.

[0010] Furthermore, in order to facilitate the twisting and rotating of the hydraulic steering gear, a steering wheel is fixedly installed on the top of the hydraulic steering gear.

[0011] Furthermore, in order to inject hydraulic oil into the oil tank, an oil filling pipe is fixedly installed on one side of the top of the oil tank.

[0012] Furthermore, in order to achieve the purpose of supporting the bottom of the filter, support rods are fixedly installed on both sides of the bottom of the filter.

[0013] The beneficial effects of the utility model are:

[0014] 1. The hydraulic oil drawn into the hydraulic pump from the oil tank is filtered through the filter screen inside the filter. During the transmission process between the oil pipe and the filter, the fluidity of the hydraulic oil can continuously drive the rotating blade 1 and the rotating blade 2 to rotate, so that the two rotating blades drive the transmission shaft and the cleaning brush to continuously rotate and wipe on one side of the filter screen, effectively preventing the filter residue from being clogged and adsorbed on one side of the filter screen.

[0015] 2. The pressure of the hydraulic oil on both sides of the filter is monitored by the pressure differential sensor on one side of the filter. When, after a long period of filtration, too much filter residue accumulates on one side of the filter, affecting the flow and pressure of the hydraulic oil in the filter, resulting in the steering hydraulic system being unable to obtain sufficient pressure oil supply, the buzzer will sound an alarm to remind you to clean. Hydraulic oil can be injected into the filter through the cleaning pipe in time to backwash the filter, and the filter residue adsorbed on the surface of the filter can be flushed and discharged through the drain pipe. The fluidity of the backwashing hydraulic oil can also drive the rotating fan blades to rotate continuously, so that the cleaning brush can wipe and clean the filter residue adsorbed on one side of the filter, effectively improving the cleaning effect and efficiency of the filter residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the surface structure of a steering hydraulic device for a mining electric vehicle according to an embodiment of the present utility model;

[0018] Figure 2 This is a side view of a steering hydraulic device for a mining electric vehicle according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the surface structure of a filter in a steering hydraulic device for a mining electric vehicle according to an embodiment of the present utility model;

[0020] Figure 4 This is an internal cross-sectional view of a filter in a steering hydraulic device for a mining electric vehicle according to an embodiment of the present utility model;

[0021] Figure 5 The figure is a side view of the internal section of a filter in a steering hydraulic device of a mining electric vehicle according to an embodiment of the present utility model.

[0022] In the picture:

[0023] 1. Hydraulic pump; 2. Hydraulic steering gear; 3. Steering cylinder; 4. Filter; 5. Filter residue cleaning mechanism; 501. Filter screen; 502. Pressure differential sensor; 503. Buzzer; 504. Cleaning pipe; 505. Drain pipe; 506. Oil pipeline; 507. Drive shaft; 508. Rotating fan blade 1; 509. Rotating fan blade 2; 510. Cleaning brush; 6. Fuel tank; 7. Oil return pipe; 8. Solenoid valve; 9. Steering wheel; 10. Oil filling pipe; 11. Support rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] According to an embodiment of the present utility model, a steering hydraulic device for an electric mining vehicle is provided.

[0026] Example 1:

[0027] like Figure 1-Figure 5 As shown, a steering hydraulic device for an electric mining vehicle according to an embodiment of the present invention includes a hydraulic pump 1, which is responsible for converting mechanical energy into liquid pressure energy and providing a power source for the steering system; one side of the hydraulic pump 1 is fixedly connected to a hydraulic steering gear 2 through a pipeline, which is responsible for adjusting the direction and flow of the oil, thereby controlling the action of the steering cylinder 3; one side of the hydraulic steering gear 2 is fixedly connected to a steering cylinder 3 through a pipeline, which directly acts on the components of the steering mechanism of the wheel of the electric mining vehicle and realizes the angle change of the wheel by the movement of the internal piston; a filter 4 is provided on one side of the hydraulic pump 1 for cleaning the hydraulic oil and preventing impurities from entering the steering hydraulic system and causing damage; the internal structure of the filter 4 is fixedly connected to the hydraulic steering gear 2 through a pipeline, which is responsible for adjusting the direction and flow of the oil, thereby controlling the action of the steering cylinder 3; the hydraulic steering gear 2 is fixedly connected to the steering cylinder 3 through a pipeline, which directly acts on the components of the steering mechanism of the wheel of the electric mining vehicle and realizes the angle change of the wheel by the movement of the internal piston; a filter 4 is provided on one side of the hydraulic pump 1 for cleaning the hydraulic oil and preventing impurities from entering the steering hydraulic system and causing damage; the internal structure of the filter 4 is fixedly connected to the hydraulic steering gear 2 through a pipeline There is a filter residue cleaning mechanism 5, which is used to facilitate the cleaning and discharge of the filtered filter residue; one side of the filter 4 is fixedly connected to the oil tank 6 through a pipeline, which is used to provide hydraulic oil for the hydraulic system; a return oil pipe 7 is fixedly installed on one side of the hydraulic steering gear 2, and one end of the return oil pipe 7 is fixedly connected to the oil tank 6, which is used to recover the hydraulic oil discharged from the squeezed side of the steering cylinder 3; the hydraulic oil in the oil tank 6 flows to the filter 4 for filtration, enters the hydraulic pump 1 for boosting and is input into the hydraulic steering gear 2 through a pipeline. Through the rotation control of the hydraulic steering gear 2, the internal hydraulic oil flows to different directions in the steering cylinder 3, causing the steering cylinder 3 to extend and retract left and right, thereby realizing the steering of the mining vehicle wheels.

[0028] like Figure 1-Figure 5As shown, the filter residue cleaning mechanism 5 includes a filter screen 501 fixedly installed in the filter 4, through which the hydraulic oil flowing through the filter 4 is filtered, and the filtered filter residue is accumulated on one side of the filter screen 501; a pressure difference sensor 502 is fixedly installed on one side of the filter screen 501 for monitoring the pressure of the hydraulic oil on both sides of the filter screen 501; a buzzer 503 is fixedly installed on one side of the pressure difference sensor 502 for sounding an alarm to remind the staff to clean the filter residue; a cleaning pipe 503 is fixedly installed on one side of the surface of the filter 4 04. A drain pipe 505 is fixedly installed at the bottom of the filter 4. By injecting hydraulic oil into the cleaning pipe 504, the hydraulic oil is reversely injected into the filter 4 and then flows to the filter screen 501 and is discharged through the drain pipe 505, so as to realize the backwashing of the filter screen 501 and discharge the filter residue from the filter 4; a pair of oil pipes 506 are fixedly installed at both ends of the filter 4, and a transmission shaft 507 is rotatably installed on both sides of the filter screen 501. The two ends of the transmission shaft 507 are rotatably installed in the two oil pipes 506, and the two ends of the transmission shaft 507 are fixedly installed with rotating fan blades One 508, a rotating blade 2 509 is installed on one side of the rotating blade 1 508, and a cleaning brush 510 is fixedly installed on one side of the rotating blade 2 509. One side of the cleaning brush 510 is in sliding contact with one side of the filter 501. By injecting hydraulic oil into the filter 4, the fluidity of the liquid can drive the two rotating blades to rotate, and then the rotating blades drive the transmission shaft 507 and the cleaning brush 510 to rotate, so that the cleaning brush 510 wipes and cleans the filter residue adsorbed on the filter 501; two oil pipes 506 A solenoid valve 8 is fixedly installed on one end of each filter 4, which is used to close the solenoid valve 8 when the filter screen 501 is backwashed and cleaned, so as to prevent the backwashed hydraulic oil from entering the oil tank 6 and the hydraulic pump 1; a steering wheel 9 is fixedly installed on the top of the hydraulic steering gear 2, which is used to facilitate the twisting and rotation of the hydraulic steering gear 2; an oil filling pipe 10 is fixedly installed on one side of the top of the oil tank 6, which is used to facilitate the replenishment of hydraulic oil in the oil tank 6; support rods 11 are fixedly installed on both sides of the bottom of the filter 4, which are used to support the bottom of the filter 4 in the air, so that the sewage pipe 505 can discharge the filter residue.

[0029] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0030] During actual use, the hydraulic oil drawn into the hydraulic pump 1 from the oil tank 6 is filtered through the filter 501 in the filter 4. During the transmission process of the hydraulic oil between the oil pipe 506 and the filter 4, the fluidity of the hydraulic oil can continuously drive the rotating fan blade 1 508 and the rotating fan blade 2 509 to rotate, so that the two rotating fan blades drive the transmission shaft 507 and the cleaning brush 510 to continuously rotate and wipe on one side of the filter 501, effectively preventing the filter residue from being blocked and adsorbed on one side of the filter 501; the pressure difference sensor 502 on one side of the filter 4 is used to monitor the pressure of the hydraulic oil on both sides of the filter 501. When, after a long period of filtration, too much filter residue accumulates on one side of the filter 501, affecting the flow and pressure of the hydraulic oil in the filter 4, resulting in the steering hydraulic system being unable to obtain sufficient pressure oil supply, the buzzer 503 will sound an alarm to remind cleaning, and hydraulic oil can be injected into the filter 4 through the cleaning pipe 504 in time to realize backwashing of the filter 501, and the filter residue adsorbed on the surface of the filter 501 is flushed and discharged through the drain pipe 505.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steering hydraulic device for a mining electric vehicle, characterized in that: The invention comprises a hydraulic pump (1), one side of the hydraulic pump (1) is fixedly connected to a hydraulic steering gear (2) via a pipeline, one side of the hydraulic steering gear (2) is fixedly connected to a steering oil cylinder (3) via a pipeline, one side of the hydraulic pump (1) is provided with a filter (4), the interior of the filter (4) is provided with a filter residue cleaning mechanism (5), one side of the filter (4) is fixedly connected to an oil tank (6) via a pipeline, one side of the hydraulic steering gear (2) is fixedly installed with an oil return pipe (7), one end of the oil return pipe (7) is fixedly connected to the oil tank (6).

2. A steering hydraulic device for an electric mining vehicle according to claim 1, characterized in that: The filter residue cleaning mechanism (5) comprises a filter screen (501) fixedly mounted in the filter (4); a differential pressure sensor (502) fixedly mounted on one side of the filter screen (501); a buzzer (503) fixedly mounted on one side of the differential pressure sensor (502); a cleaning pipe (504) fixedly mounted on one side of the surface of the filter (4); and a sewage discharge pipe (505) fixedly mounted on the bottom of the filter (4).

3. A steering hydraulic device for an electric mining vehicle according to claim 2, characterized in that: An oil delivery pipe (506) is fixedly mounted on both ends of the filter (4), a transmission shaft (507) is rotatably mounted on both sides of the filter (501), both ends of the transmission shaft (507) are rotatably mounted in the oil delivery pipe (506), a rotating blade 1 (508) is fixedly mounted on both ends of the transmission shaft (507), a rotating blade 2 (509) is mounted on one side of the rotating blade 1 (508), and a cleaning brush (510) is fixedly mounted on one side of the rotating blade 2 (509).

4. A steering hydraulic device for an electric mining vehicle according to claim 3, characterized in that: A solenoid valve (8) is fixedly mounted on one end of the oil delivery pipe (506).

5. The steering hydraulic device of a mining electric vehicle according to claim 1, characterized in that: A steering wheel (9) is fixedly mounted on the top of the hydraulic steering gear (2).

6. The steering hydraulic device of a mining electric vehicle according to claim 1, characterized in that: An oil filling pipe (10) is fixedly mounted on one side of the top of the oil tank (6).

7. The steering hydraulic device of a mining electric vehicle according to claim 1, characterized in that: Support rods (11) are fixedly mounted on both sides of the bottom of the filter (4).

Images