A coal mine underground narrow body rubber wheel type drilling machine, double suspension liquid path system and method

Abstract

The application discloses a coal mine underground narrow-body rubber-tyre drilling machine, a double-hung suspension liquid path system and a method, wherein an electromagnetic starter and an explosion-proof controller are sequentially arranged on the right side of a whole frame, a main machine is arranged on the rear middle part of the whole frame, and the stability of the whole machine during walking and drilling of the drilling machine is ensured; an operating platform is fixedly connected to the left side of the whole frame and is used for realizing the operation control of the upper-mounted drilling machine; a motor pump group is vertically arranged on the whole frame, axial layout space of the upper-mounted drilling machine is saved, and full use of longitudinal space is realized; an oil tank is arranged on the rear part of a cab and is transversely arranged on the upper part of the whole frame, and mainly meets the hydraulic oil demand of the narrow-body rubber-tyre vehicle and the upper-mounted drilling machine; and the above arrangement can better solve the compatible design of the large bearing capacity of the rubber-tyre vehicle and the narrow-body structure, and realize the rapid relocation of the drilling machine.

Description

Technical Field

[0001] This invention belongs to the technical field of underground drilling equipment in coal mines, specifically relating to a narrow-body rubber-wheel drilling rig for underground coal mines, a double-suspension hydraulic circuit system, and a method thereof. Background Technology

[0002] Coal, as one of my country's main energy resources, occupies an important position in the national economy. With the development of coal mining technology, mines are becoming larger and drilling sites are becoming more dispersed. The underground working environment has been greatly improved, and the surface hardening of transport roadways has been significantly enhanced. Currently, underground tunnel drilling rigs in coal mines are mainly fully hydraulic tracked types. While these rigs offer advantages such as flexible movement and real-time azimuth adjustment, they are limited by power supply constraints, allowing only short-distance movement within the drilling site. Long-distance transfers between drilling sites still require the assistance of other transportation vehicles, severely limiting the improvement of mine production efficiency.

[0003] Downhole rubber-wheeled equipment mainly consists of rubber-wheeled vehicles. However, these devices are large in size, making them unsuitable for narrow tunnels (such as belt conveyor tunnels), and their structure is not compact enough. Furthermore, the hydraulic systems of the suspension systems of these rubber-wheeled vehicles are not sufficiently sophisticated to meet the demands of downhole operations. Summary of the Invention

[0004] The purpose of this invention is to provide a narrow-body rubber-tired drilling rig for underground coal mines, a double-suspension hydraulic system and method, to solve the problems of existing rubber-tired vehicles being large in size and not compact in structure, and the hydraulic system of the suspension system being not perfect, making it difficult to meet the needs of underground operations.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A narrow-body rubber-tired drilling rig system for underground coal mines includes an upper-body drilling rig system and a narrow-body rubber-tired vehicle; the narrow-body rubber-tired vehicle includes an integral frame, a cab is fixedly installed at the front of the integral frame, and the upper-body drilling rig system is mounted on the integral frame and located at the rear of the cab;

[0007] The front of the bottom of the integral frame is provided with an I axle; the rear of the bottom of the integral frame is provided with an II axle and a III axle through a double suspension system; each of the I, II, and III axles is provided with a tire; the middle of the integral frame is provided with a power system, which is used to provide power to the I, II, and III axles respectively, thereby driving the corresponding tires to rotate.

[0008] The bottom of the integral frame is also evenly distributed with multiple sets of liftable stabilizing devices. These multiple stabilizing devices can be lowered or raised at the same time, thereby allowing the tires to be lifted off or in contact with the ground simultaneously.

[0009] The dual suspension system includes a bracket fixedly connected to the bottom of the integral frame. The lower part of the bracket is connected to the II and III axles through a pair of symmetrically arranged balance frames. The pair of balance frames are hinged to each other by a connecting frame. The connecting frame is also hinged to one end of a connecting rod, and the other end of the connecting rod is hinged to the bracket.

[0010] The bracket is also provided with two pairs of shock absorbers corresponding to bridge II and bridge III; one end of each of the four shock absorbers is hinged to the corresponding position of the bracket, and the other end is hinged to the corresponding position of bridge II or bridge III.

[0011] The present invention also has the following features:

[0012] Furthermore, the power system includes an engine, a hydraulic torque converter, a drive axle assembly, and drive shafts corresponding to axle I and axle II;

[0013] The engine, hydraulic torque converter, and drive axle assembly are respectively connected to the controller of the narrow-body rubber-tired vehicle.

[0014] Furthermore, the integral frame uses two I-beams as main beams;

[0015] Multiple crossbeams are installed in parallel on the two main beams.

[0016] Furthermore, the aforementioned upper-mounted drilling rig system includes a drilling rig body, an electromagnetic starter, an explosion-proof controller, an operating platform, a motor pump set, and a drilling rig oil tank;

[0017] The electromagnetic starter and explosion-proof controller are arranged sequentially from front to back on one side of the middle of the integral vehicle frame;

[0018] The drilling rig oil tank, motor pump set and operating platform are arranged sequentially from front to back on the other side of the middle of the integral frame;

[0019] The main body of the drilling rig is located at the rear of the integral vehicle frame.

[0020] Furthermore, all of the tires described are inflated solid tires.

[0021] Furthermore, the stabilizing device is a jack.

[0022] A hydraulic circuit system for a double suspension system of a narrow-body rubber-tired drilling rig system in a coal mine, the hydraulic circuit system of the double suspension system of the narrow-body rubber-tired drilling rig system in a coal mine is based on the above-mentioned narrow-body rubber-tired drilling rig in a coal mine, including a pressure gauge, a safety valve, an oil suction filter, a hydraulic pump, an oil suction tank, and a II-axle suspension control circuit and a III-axle suspension control circuit with the same structure, all mounted on an integral frame;

[0023] The suspension control circuits for both the II and III bridges include a first diverter valve, a second diverter valve, a third diverter valve, a fourth diverter valve, and a three-position four-way solenoid valve.

[0024] The pressure gauge, safety valve, oil suction filter, hydraulic pump, first diverter valve, second diverter valve, third diverter valve, fourth diverter valve, and three-position four-way solenoid valve are all connected to the controller of the narrow-body rubber-tired vehicle.

[0025] The oil inlet of the hydraulic pump is connected to the oil outlet of the oil suction tank through an oil suction filter; the oil outlet of the hydraulic pump is connected to the first end of two three-position four-way solenoid valves; the pressure gauge and safety valve are located between the oil outlet of the hydraulic pump and the first end of the two three-position four-way solenoid valves.

[0026] The second end of the three-position four-way solenoid valve is connected to the return oil tank, the third end of the three-position four-way solenoid valve is connected to the first end of the third diverter valve, and the fourth end of the three-position four-way solenoid valve is connected to the first end of the fourth diverter valve.

[0027] The second end of the third diverter valve is connected to the first end of the second diverter valve, and the third end of the third diverter valve is connected to the first end of the first diverter valve.

[0028] The second end of the fourth diverter valve is connected to the second end of the second diverter valve, and the third end of the fourth diverter valve is connected to the second end of the first diverter valve.

[0029] The third end of the first diversion valve and the third end of the second diversion valve are respectively connected to the two shock absorbers corresponding to the II bridge.

[0030] A control method for the hydraulic circuit system of a double-suspension system in a narrow-body rubber-tired drilling rig system for underground coal mines, the method comprising the following steps:

[0031] Step 0: The narrow-body rubber-wheeled vehicle travels to the work area;

[0032] Step 1: The controller of the narrow-body rubber-wheeled vehicle controls the stabilizing device to begin lowering;

[0033] The controller of the narrow-body rubber-tired vehicle switches the three-position four-way solenoid valves of the II-axle suspension control circuit and the III-axle suspension control circuit to the right position respectively;

[0034] Step 2: The hydraulic pump draws hydraulic oil from the oil suction tank and inputs it into the first terminals of two three-position four-way solenoid valves respectively.

[0035] Step 3: The three-position four-way solenoid valve of the II axle suspension control circuit is switched to the right position, so that the hydraulic oil flows into the corresponding shock absorber of the II axle through the third end of the first and second diverter valves of the II axle suspension control circuit.

[0036] Step 4: The three-position four-way solenoid valve of the III axle suspension control circuit is switched to the left position, so that the hydraulic oil flows into the corresponding shock absorber of the III axle through the third end of the first and second diverter valves of the III axle suspension control circuit, until all tires are lifted off the ground and the stabilizing device stops descending.

[0037] Step 5: The upper drilling rig system begins operation until the operation is completed;

[0038] Step 6: The controller of the narrow-body rubber-wheeled vehicle detects that the stabilizing device has begun to rise;

[0039] Step 7: Switch the three-position four-way solenoid valve of the II axle suspension control circuit to the left position, and switch the three-position four-way solenoid valve of the III axle suspension control circuit to the right position until all tires are back in contact with the ground and the stabilizing device stops rising.

[0040] Compared with the prior art, the present invention has the following technical effects:

[0041] The present invention relates to a narrow-body rubber-tired drilling rig for coal mines, a double-suspension hydraulic system, and a method. The electromagnetic starter and explosion-proof controller are sequentially arranged on the right side of the integrated chassis, while the main unit is located at the rear center of the integrated chassis, ensuring the overall stability of the drilling rig during travel and drilling operations. The control panel is fixedly connected to the left side of the integrated chassis for controlling the upper-mounted drilling rig. The motor pump unit is erected on the integrated chassis, saving axial layout space for the upper-mounted drilling rig and maximizing longitudinal space utilization. The oil tank is located at the rear of the cab and transversely on the upper part of the integrated chassis, primarily meeting the hydraulic oil requirements of the narrow-body rubber-tired vehicle and the upper-mounted drilling rig. All these features effectively solve the challenges of balancing the high load-bearing capacity of the rubber-tired vehicle with the narrow-body structure, and enable rapid relocation of the drilling rig.

[0042] The dual-suspension hydraulic system of the present invention improves the passability of drilling rigs in complex tunnel conditions, adapts to complex road conditions, and meets the high load-bearing capacity requirements of the rear drilling mechanism. In addition, it realizes dual power adjustment of the rubber-tired vehicle and the upper drilling rig, further improving the stabilization efficiency and meeting the multi-condition use requirements of driving, resting and drilling, making it suitable for large-scale industrial use and promotion. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the left-side structure of the narrow-body rubber-tired drilling rig for underground coal mines according to the present invention;

[0044] Figure 2 This is a schematic diagram of the narrow-body rubber-tired vehicle of the present invention;

[0045] Figure 3 This is a schematic diagram of the composition of the double suspension system in this invention;

[0046] Figure 4 This is a schematic diagram of the hydraulic system of the double suspension system in this invention;

[0047] Figure 5 This is a schematic diagram of the upper-mounted drilling rig in this invention.

[0048] The meanings of the labels in the diagram are as follows:

[0049] 1. Upper structure drilling rig system; 2. Narrow-body rubber-tired vehicle; 3. Double suspension system; 4. Stabilizing device; 5. Pressure gauge; 6. Safety valve; 7. Suction oil filter; 8. Hydraulic pump; 9. Suction tank; 10. First diverter valve; 11. Second diverter valve; 12. Third diverter valve; 13. Fourth diverter valve; 14. Three-position four-way solenoid valve; 15. Return oil tank;

[0050] 101. Drilling rig body; 102. Electromagnetic starter; 103. Explosion-proof controller; 104. Control panel; 105. Motor pump set; 106. Drilling rig oil tank; 201. Integral frame; 202. Cab; 203. Axle I; 204. Axle II; 205. Axle III; 301. Support; 302. Balance frame; 303. Connecting frame; 304. Connecting rod; 305. Shock absorber. Detailed Implementation

[0051] It should be noted that, unless otherwise specified, all components in this invention are known in the prior art. For example, the explosion-proof controller uses a commonly known explosion-proof controller.

[0052] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0053] like Figure 1 and 2 As shown, a narrow-body rubber-tired drilling rig system for underground coal mines includes an upper-mounted drilling rig system 1 and a narrow-body rubber-tired vehicle 2. The narrow-body rubber-tired vehicle 2 includes an integral frame 201, with a cab 202 fixedly mounted at the front of the integral frame 201. The upper-mounted drilling rig system 1 is mounted on the integral frame 201 and located at the rear of the cab 202.

[0054] The front of the bottom of the integral frame 201 is provided with a first axle 203; the rear of the bottom of the integral frame 201 is provided with a second axle 204 and a third axle 205 through a double suspension system 3; tires are respectively provided on the first axle 203, the second axle 204 and the third axle 205; a power system is provided in the middle of the integral frame 201, which is used to provide power to the first axle 203, the second axle 204 and the third axle 205 respectively, thereby driving the tires to rotate;

[0055] The bottom of the integral frame 201 is also evenly distributed with multiple sets of liftable stabilizing devices 4. When the multiple sets of stabilizing devices 4 are lowered, the tires can be lifted off the ground.

[0056] The dual suspension system 3 includes a bracket 301 fixedly connected to the bottom of the integral frame 201. The lower part of the bracket 301 is connected to the II axle 204 and the III axle 205 through a pair of symmetrically arranged balance frames 302. The pair of balance frames 302 are hinged to each other through a connecting frame 303. The connecting frame 303 is also hinged to one end of the connecting rod 304, and the other end of the connecting rod 304 is hinged to the bracket 301.

[0057] The bracket 301 is also equipped with two pairs of shock absorbers 305 corresponding to bridge II 204 and bridge III 205.

[0058] One end of each of the four shock absorbers 305 is hinged to the corresponding position of the bracket 301, and the other end is hinged to the corresponding positions of the II axle 204 and III axle 205, respectively. This is used to enable the narrow-body rubber-tired vehicle to better adapt to road undulation conditions, improve the adhesion of the wheels, and enhance traction and working stability.

[0059] Shock absorbers 305 are arranged symmetrically on the left and right sides. They convert the kinetic energy of the spring into heat energy through the internal hydraulic oil, quickly damping vibrations and preventing the vehicle body from shaking up and down continuously, thus meeting the overall driving stability performance of the machine.

[0060] Axle 203 is located at the front of the integral frame to enable steering during the machine's movement; Axle 204 and Axle 205 are connected to the integral frame 201 via a double suspension system 3 to enable the machine's driving and high load-bearing capacity of the drilling mechanism of the upper structure.

[0061] Among them, the balance frame 302 connects the II axle 203 and the III axle 204 as a double axle at both ends, and the middle part of the balance bar is hinged to the frame. When the II axle 204 is raised, the III axle 205 will be lowered. Moreover, since the two arms of the balance frame 302 are of equal length, the vertical load of the two axles is equal under any circumstances, and there will be no situation where individual wheels are suspended in the air.

[0062] Specifically, the balance frame 302 is arranged symmetrically from left to right, connecting the II axle 204 and III axle 205 at both ends. The middle section is hinged to the connecting frame 303, and the left and right balance frames 302 and the connecting frame 303 are hinged together by the connecting rod 304. Raising one axle will lower the other. Furthermore, because the two arms of the balance frame 302 are of equal length, the vertical load on the II axle 204 and III axle 205 is equal under all circumstances, preventing any individual wheel from being suspended in the air.

[0063] Meanwhile, the balance frame 302 can be equipped with leaf springs, which can better adapt to uneven road conditions, improve wheel adhesion, and enhance traction and working stability.

[0064] In one specific implementation, the power system includes an engine, a hydraulic torque converter, a drive axle assembly, and drive shafts corresponding to axle I 203 and axle II 204;

[0065] The engine, torque converter, drive axle assembly, and drive shaft are connected to the controller of the narrow-body rubber-tired vehicle 2. Its working principle is as follows: the engine first transmits power to the torque converter, then from the torque converter to the transmission via the drive shaft, then to axles I and II via the drive shaft, and finally, after being reduced in speed by the reducer of the drive axle, the power is transmitted to the wheels, thus driving the vehicle. This power system achieves full drive for all four rear wheels and has advantages such as a simple and reliable transmission system, high driving force, low ground pressure, and good passability.

[0066] As a preferred option, the integral frame 201 uses two I-beams as the main beams;

[0067] Multiple crossbeams are installed in parallel on the two main beams.

[0068] As a preferred embodiment, the upper drilling rig system 1 includes a drilling rig body 101, an electromagnetic starter 102, an explosion-proof controller 103, an operating panel 104, a motor pump set 105, and a drilling rig oil tank 106;

[0069] Electromagnetic starter 102 and explosion-proof controller 103 are arranged sequentially from front to back on one side of the middle of the integral frame 201; they are used to realize the power supply of the motor pump group and the remote control function of the drilling system, respectively.

[0070] The drilling rig oil tank 106, the motor pump unit 105 and the operating platform 104 are arranged sequentially from front to back on the other side of the middle of the integral frame 201;

[0071] The drilling rig body 101 is located at the rear of the integral frame 201. As a key component of the drilling system, the drilling rig body 101 bears the impact load during the drilling process. Its location at the rear of the integral frame ensures the stability of the drilling rig during travel and drilling.

[0072] As a preferred option, all tires are inflated solid tires. They have a high load-bearing capacity, are puncture-resistant, wear-resistant, and have a significantly longer service life than ordinary pneumatic tires.

[0073] The stabilizing device 4 uses a jack.

[0074] A hydraulic circuit system for a double suspension system of a narrow-body rubber-tired drilling rig system in coal mines. The hydraulic circuit system of the double suspension system of the narrow-body rubber-tired drilling rig system in coal mines is based on the narrow-body rubber-tired drilling rig in the mine and includes a pressure gauge 5, a safety valve 6, an oil suction filter 7, a hydraulic pump 8, an oil suction tank 9 and a II-axle suspension control circuit and a III-axle suspension control circuit with the same structure, which are installed on the integral frame 201.

[0075] Both the II-bridge suspension control circuit and the III-bridge suspension control circuit include a first diverter valve 10, a second diverter valve 11, a third diverter valve 12, a fourth diverter valve 13, and a three-position four-way solenoid valve 14.

[0076] Pressure gauge 5, safety valve 6, oil suction filter 7, hydraulic pump 8, first diverter valve 10, second diverter valve 11, third diverter valve 12, fourth diverter valve 13 and three-position four-way solenoid valve 14 are all connected to the controller of the narrow-body rubber-tired vehicle 2.

[0077] The oil inlet of the hydraulic pump 8 is connected to the oil outlet of the suction tank 9 through the oil suction filter 7; the oil outlet of the hydraulic pump 8 is connected to the first end of the two three-position four-way solenoid valves 14; the pressure gauge 5 and the safety valve 6 are located between the oil outlet of the hydraulic pump 8 and the first end of the two three-position four-way solenoid valves 14.

[0078] The second end of the three-position four-way solenoid valve 14 is connected to the return oil tank 15, the third end of the three-position four-way solenoid valve 14 is connected to the first end of the third diverter valve 12, and the fourth end of the three-position four-way solenoid valve 14 is connected to the first end of the fourth diverter valve 13.

[0079] The second end of the third diversion valve 12 is connected to the first end of the second diversion valve 11, and the third end of the third diversion valve 12 is connected to the first end of the first diversion valve 10.

[0080] The second end of the fourth diverter valve 13 is connected to the second end of the second diverter valve 11, and the third end of the fourth diverter valve 13 is connected to the second end of the first diverter valve.

[0081] The third end of the first diversion valve 10 and the third end of the second diversion valve 11 are respectively connected to the two shock absorbers 305 corresponding to the II bridge 204.

[0082] By switching the left and right positions of the three-position four-way solenoid valve 14, the length of the shock absorber 305 can be extended or shortened.

[0083] As a specific implementation method, the control method for the hydraulic circuit system of the double suspension system of a narrow-body rubber-tired drilling rig system in coal mines includes the following steps:

[0084] Step 0: The narrow-body rubber-tired vehicle 2 travels to the work area; the dual-power control of the stabilization device enables the drilling rig to be moved to the drilling site without waiting for the upper drilling rig's power cable to be connected, and the diesel power system of the narrow-body rubber-tired vehicle can be used to quickly adjust the stabilization device.

[0085] Step 1: The controller of the narrow-body rubber-wheeled vehicle 2 controls the stabilizing device 4 to begin lowering;

[0086] The controller of the narrow-body rubber-tired vehicle 2 switches the three-position four-way solenoid valve 14 of the II axle suspension control circuit and the III axle suspension control circuit to the right position respectively;

[0087] Step 2: Hydraulic pump 8 draws hydraulic oil from oil tank 9, and high-pressure oil is input into the first end of two three-position four-way solenoid valves 14 respectively.

[0088] Step 3: The three-position four-way solenoid valve 14 of the II axle suspension control circuit is switched to the right position, so that the hydraulic oil flows into the shock absorber 305 corresponding to the II axle 204 through the third end of the first diverter valve 10 and the second diverter valve 11 of the II axle suspension control circuit, thereby shortening the length of the shock absorber.

[0089] Step 4: The three-position four-way solenoid valve 14 of the III-bridge suspension control circuit is switched to the left position, so that the hydraulic oil flows into the shock absorber 305 corresponding to the III-bridge 205 through the third end of the first diverter valve 10 and the second diverter valve 11 of the III-bridge suspension control circuit, thereby extending the length of the shock absorber.

[0090] The stabilizing device 4 stops descending once all tires have been lifted off the ground.

[0091] Step 5: The upper drilling rig system 1 begins operation until the operation is completed;

[0092] Step 6: The controller of the narrow-body rubber-wheeled vehicle 2 detects that the stabilizing device 4 has started to rise;

[0093] Step 7: The three-position four-way solenoid valve 14 of the II axle suspension control circuit is switched to the left position, and the three-position four-way solenoid valve 14 of the III axle suspension control circuit is switched to the right position until all tires are back in contact with the ground, and the stabilizing device 4 stops rising.

[0094] Then, it can continue its journey and move to the next drilling site.

[0095] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A narrow-body rubber-tired drilling rig system for underground coal mines, comprising an upper-mounted drilling rig system (1), characterized in that, It also includes a narrow-body rubber-tired vehicle (2); the narrow-body rubber-tired vehicle (2) includes an integral frame (201), the front of which is fixedly provided with a cab (202), and the upper structure drilling system (1) is mounted on the integral frame (201) and located at the rear of the cab (202); The integrated frame (201) has a first axle (203) at the front of its bottom; the integrated frame (201) has a second axle (204) and a third axle (205) at the rear of its bottom via a double suspension system (3); tires are provided on the first axle (203), second axle (204) and third axle (205); a power system is provided in the middle of the integrated frame (201), which provides power to the first axle (203), second axle (204) and third axle (205) respectively, thereby driving the corresponding tires to rotate; The bottom of the integral frame (201) is also evenly distributed with multiple sets of liftable stabilizing devices (4). The multiple sets of stabilizing devices (4) can be lowered or raised at the same time, thereby allowing the tires to be lifted off or in contact with the ground at the same time. The dual suspension system (3) includes a bracket (301) fixedly connected to the bottom of the integral frame (201). The lower part of the bracket (301) is connected to the II axle (204) and the III axle (205) through a pair of symmetrically arranged balance frames (302). The pair of balance frames (302) are hinged to each other through a connecting frame (303). The connecting frame (303) is also hinged to one end of a connecting rod (304), and the other end of the connecting rod (304) is hinged to the bracket (301). The bracket (301) is also provided with two pairs of shock absorbers (305) corresponding to bridge II (204) and bridge III (205); one end of each of the four shock absorbers (305) is hinged to the corresponding position of the bracket (301), and the other end is hinged to the corresponding position of bridge II (204) or bridge III (205). The integral frame (201) uses two I-beams as main beams; Multiple crossbeams are installed in parallel on the two main beams; The upper drilling rig system (1) includes a drilling rig body (101), an electromagnetic starter (102), an explosion-proof controller (103), an operating panel (104), a motor pump group (105), and a drilling rig oil tank (106). The electromagnetic starter (102) and the explosion-proof controller (103) are arranged sequentially from front to back on one side of the middle of the integral frame (201); The drilling rig oil tank (106), motor pump set (105) and operating platform (104) are arranged sequentially from front to back on the other side of the middle of the integral frame (201); The drilling rig body (101) is located at the rear of the integral frame (201).

2. The narrow-body rubber-tired drilling rig system for underground coal mines as described in claim 1, characterized in that, The power system includes an engine, a hydraulic torque converter, a drive axle assembly, and drive shafts corresponding to axle I (203) and axle II (204); The engine, hydraulic torque converter, and drive axle assembly are respectively connected to the controller of the narrow-body rubber-tired vehicle (2).

3. The narrow-body rubber-tired drilling rig system for underground coal mines as described in claim 2, characterized in that, All tires mentioned are inflated solid tires.

4. The narrow-body rubber-tired drilling rig system for underground coal mines as described in claim 3, characterized in that, The stabilizing device (4) is a jack.

5. A hydraulic system for a double-suspension system of a narrow-body rubber-tired drilling rig system for underground coal mines, wherein the hydraulic system for the double-suspension system of the narrow-body rubber-tired drilling rig system for underground coal mines is based on the narrow-body rubber-tired drilling rig described in claim 4, characterized in that... Includes a pressure gauge (5), a safety valve (6), an oil suction filter (7), a hydraulic pump (8), an oil suction tank (9), and a II-axle suspension control circuit and a III-axle suspension control circuit with the same structure, all mounted on the integral frame (201). The suspension control circuits of the II bridge and the III bridge both include a first diverter valve (10), a second diverter valve (11), a third diverter valve (12), a fourth diverter valve (13), and a three-position four-way solenoid valve (14). The pressure gauge (5), safety valve (6), oil suction filter (7), hydraulic pump (8), first diverter valve (10), second diverter valve (11), third diverter valve (12), fourth diverter valve (13) and three-position four-way solenoid valve (14) are all connected to the controller of the narrow-body rubber-wheeled vehicle (2). The oil inlet of the hydraulic pump (8) is connected to the oil outlet of the oil suction tank (9) through the oil suction filter (7); the oil outlet of the hydraulic pump (8) is connected to the first end of the two three-position four-way solenoid valves (14); the pressure gauge (5) and the safety valve (6) are located between the oil outlet of the hydraulic pump (8) and the first end of the two three-position four-way solenoid valves (14). The second end of the three-position four-way solenoid valve (14) is connected to the return oil tank (15), the third end of the three-position four-way solenoid valve (14) is connected to the first end of the third diverter valve (12), and the fourth end of the three-position four-way solenoid valve (14) is connected to the first end of the fourth diverter valve (13). The second end of the third diversion valve (12) is connected to the first end of the second diversion valve (11), and the third end of the third diversion valve (12) is connected to the first end of the first diversion valve (10). The second end of the fourth diverter valve (13) is connected to the second end of the second diverter valve (11), and the third end of the fourth diverter valve (13) is connected to the second end of the first diverter valve. The third end of the first diversion valve (10) and the third end of the second diversion valve (11) are respectively connected to the two shock absorbers (305) corresponding to the II bridge (204).

6. A control method for the hydraulic circuit system of a double-suspension system of a narrow-body rubber-tired drilling rig system in an underground coal mine, wherein the control method for the narrow-body rubber-tired drilling rig system in an underground coal mine is based on the hydraulic circuit system of the double-suspension system of the narrow-body rubber-tired drilling rig system in an underground coal mine as described in claim 5, characterized in that... Includes the following steps: Step 0: The narrow-body rubber-wheeled vehicle (2) travels to the work area; Step 1: The controller of the narrow-body rubber-wheeled vehicle (2) controls the stabilizing device (4) to begin lowering; The controller of the narrow-body rubber-tired vehicle (2) switches the three-position four-way solenoid valve (14) of the II-bridge suspension control circuit and the III-bridge suspension control circuit to the right position respectively; Step 2: The hydraulic pump (8) draws hydraulic oil from the oil suction tank (9) and inputs it into the first end of the two three-position four-way solenoid valves (14); Step 3: The three-position four-way solenoid valve (14) of the II-bridge suspension control circuit is switched to the right position, so that the hydraulic oil flows into the shock absorber (305) corresponding to the II-bridge (204) through the third end of the first diverter valve (10) and the second diverter valve (11) of the II-bridge suspension control circuit respectively. Step 4: The three-position four-way solenoid valve (14) of the III-bridge suspension control circuit is switched to the left position, so that the hydraulic oil flows into the shock absorber (305) corresponding to the III-bridge (205) through the third end of the first diverter valve (10) and the second diverter valve (11) of the III-bridge suspension control circuit, until all tires are lifted off the ground and the stabilizing device (4) stops descending. Step 5: The upper drilling rig system (1) begins operation until the operation is completed; Step 6, the controller of the narrow-body rubber-wheeled vehicle (2) detects that the stabilizing device (4) has started to rise; Step 7: The three-position four-way solenoid valve (14) of the II axle suspension control circuit is switched to the left position, and the three-position four-way solenoid valve (14) of the III axle suspension control circuit is switched to the right position until all tires are back in contact with the ground, and the stabilizing device (4) stops rising.

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