Shovel plate type carrier for underground coal mine

Abstract

The invention relates to the technical field of carrying vehicles, and discloses a shovel plate type carrying vehicle for an underground coal mine, which comprises a shovel plate carrying vehicle, and a group of parking brake wheel fixing mechanisms controlled by a system are arranged at the positions of wheels on two sides of a main frame vehicle body of the shovel plate carrying vehicle; each parking brake wheel fixing mechanism comprises a single-column hydraulic press, a hydraulic balloon, a parking wedge block and an intelligent detection assembly. The single-column hydraulic machines are fixedly installed on the two sides of a wheel, limiting columns are arranged at the extending ends of telescopic arms of the single-column hydraulic machines, direction adjusting rotating discs are rotationally installed in the limiting columns, the bottoms of the direction adjusting rotating discs are movably connected with pushing block arms, and the parking wedge blocks are arranged at the tail ends of the pushing block arms. The hydraulic balloon is arranged outside the limiting column, and the intelligent detection assembly is installed on the single-column hydraulic press. The parking wedge block is driven by the single-column hydraulic press to be directly inserted into the lower portion of the tire to form physical blocking, the wheel is powerfully fixed by combining continuous thrust provided by the hydraulic balloon, a vehicle is effectively prevented from sliding on a ramp or an uneven ground, and the parking safety is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of carrier, more particularly, it relates to a shovel plate carrier for underground coal mine. BACKGROUND

[0002] The working environment of underground coal mine is complex, the ground is uneven, the slope changes greatly, and the safety of the working vehicle is highly required, the stability of the shovel plate carrier as the heavy transport equipment commonly used in underground coal mine when parking is crucial.

[0003] If the vehicle cannot be completely fixed after the driver extinguishes the fire and parks, the accidental movement of the vehicle during or after the driver gets off may cause injury or damage to the equipment, especially in the heavy vehicle composed of two-section frame, the driver's center of gravity changes when getting off, which is more likely to cause the vehicle to roll, and the probability of rolling accident increases when the center of gravity of the vehicle changes or is impacted from outside. Therefore, we propose a shovel plate carrier for underground coal mine. SUMMARY

[0004] The present application provides a shovel plate carrier for underground coal mine, which solves the technical problem that in the heavy vehicle composed of two-section frame, the driver's center of gravity changes when getting off, which is more likely to cause the vehicle to roll.

[0005] The present application provides a shovel plate carrier for underground coal mine, which includes: a shovel plate carrier, a set of parking and fixing wheel mechanisms controlled by the system are arranged on both sides of the main frame body of the shovel plate carrier; Each set of parking and fixing wheel mechanisms includes a single-column hydraulic machine, a hydraulic ballon, a parking wedge and an intelligent detection assembly; The single-column hydraulic machine is fixedly installed on both sides of the wheel, the extension end of the telescopic arm is provided with a limiting column, a direction adjusting turntable is rotatably installed in the limiting column, a push block arm is movably connected to the bottom of the direction adjusting turntable, and a parking wedge is arranged at the end of the push block arm; the hydraulic ballon is arranged outside the limiting column, and the intelligent detection assembly is installed on the single-column hydraulic machine; When the driver extinguishes the fire and parks, the system automatically controls the single-column hydraulic machine to work, drives the telescopic arm to extend downward, simultaneously extrudes the hydraulic ballon, uses the liquid pressure in the ballon to push the direction adjusting turntable to drive the parking wedge to turn to the direction of the wheel, and continuously presses the single-column hydraulic machine to make the push block arm extend, so that the parking wedge is inserted into the lower part of the tire to fix the wheel; When the vehicle is restarted, the intelligent detection assembly detects the horizontal state of the shovel plate carrier in real time, after data processing, the parking wedge located in the opposite direction of the inclination of the vehicle is preferentially withdrawn to prevent rolling accident in the mine.

[0006] Further, the intelligent detection assembly further comprises a device mounting plate fixed to the outer wall of the single-column hydraulic press and having the same levelness as the frame of the blade carrier, and the horizontal sensor is fixed to the device mounting plate.

[0007] Further, the upper wall of the device mounting plate is further provided with a hydraulic sensor, the detection end of the hydraulic sensor is provided with a probe, the top end of the probe is fixed to the inside of the hydraulic balloon, for detecting the change of the hydraulic pressure in the hydraulic balloon, and transmitting to the system through the hydraulic sensor.

[0008] Further, the upper wall of the hydraulic balloon is fixedly provided with a pressure plate, the lower wall of the hydraulic balloon is fixedly provided with an extrusion plate, the extrusion plate is slidably connected with the limiting column, the pressure plate is fixedly connected with the limiting column, and the diameters of the extrusion plate and the pressure plate are smaller than the diameter of the hydraulic balloon.

[0009] Further, the lower wall of the extrusion plate is fixedly provided with a ground probing arm, the ground probing arm is located away from the wheel side, the end of the ground probing arm away from the extrusion plate is fixedly provided with an elbow arm, the ground probing arm has an arc structure, and the arc is curved away from the wheel direction, and the lowest end of the ground probing arm is lower than the lowest end of the parking wedge.

[0010] Further, the preset slot is formed in the side of the steering turntable away from the wheel, and two pull disc springs and an expansion column are fixedly arranged in the preset slot, the top of the two pull disc springs is fixedly connected with the limiting column, the expansion column is fixedly connected with the bottom wall of the preset slot, and the expansion column is in communication with the hydraulic balloon.

[0011] Further, the push block arm is composed of a bottom arm, a middle arm and a first arm, the width and height of the bottom arm are greater than those of the middle arm, and the width and height of the middle arm are greater than those of the first arm, and the bottom arm, the middle arm and the first arm have a multi-stage telescopic structure.

[0012] Further, the first arm is rotatably connected with the parking wedge, the bottom arm is rotatably connected with the steering turntable, the rotation angle range of the parking wedge and the first arm is 0-15°, the rotation angle range of the bottom arm and the steering turntable is 0-15°, and the rotation angle range of the steering turntable and the limiting column is 0-90°.

[0013] Further, the middle arm penetrates into the inside of the bottom arm and is slidably connected with the bottom arm, the first arm penetrates into the inside of the middle arm and is slidably connected with the middle arm, the end of the bottom arm away from the parking wedge is fixedly connected with a liquid passage, and the liquid passage is in communication with the hydraulic balloon.

[0014] Further, the top end of the middle arm is fixedly provided with a first piston plate, the inside of the first piston plate is provided with a first air inlet hole, and the first piston plate is further fixedly provided with a first pull arm spring, the top end of the first arm is fixedly provided with a second piston plate, the inside of the second piston plate is provided with a second air inlet hole, and the second piston plate is further fixedly provided with a second pull arm spring.

[0015] The application has the advantages that: The application directly inserts the parking wedge under the tire by the single-column hydraulic machine, forms a physical barrier, and realizes strong fixation of the wheel by combining with the continuous thrust provided by the hydraulic balloon, effectively prevents the vehicle from sliding on the slope or uneven ground, and improves the parking safety. The intelligent detection assembly detects the horizontal state of the vehicle in real time, and preferentially withdraws the parking wedge in the opposite direction of the inclination when the vehicle starts, avoids the instantaneous sliding of the vehicle caused by the simultaneous release of all parking wedges, significantly reduces the risk of sliding accidents, especially in complex mine conditions. The hydraulic sensor monitors the pressure change in the hydraulic balloon in real time, and when the hydraulic pressure does not reach the specified value, the system can limit the opening of the door, forcing the driver to get off after the parking wheel is completely in place, thereby eliminating the occurrence of the driver sliding accident when getting off due to insecure parking, and greatly improving the operation safety. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the application; Figure 2 is a schematic diagram of the initial state structure of the parking wedge of the application; Figure 3 is a schematic diagram of the rotating state structure of the parking wedge of the application; Figure 4 is a schematic diagram of the elongated state structure of the parking wedge of the application; Figure 5 is a schematic diagram of the ground penetrating arm structure of the application; Figure 6 is a schematic diagram of the hydraulic balloon structure of the application; Figure 7 is a schematic diagram of the push block arm structure of the application.

[0017] In the figure: 11, a shovel carrier; 2, a parking brake wheel mechanism; 21, a single-column hydraulic machine; 22, a limiting column; 23, a direction adjusting turntable; 24, a push block arm; 241, a bottom arm; 242, a middle arm; 243, a first arm; 25, a parking wedge; 26, a first piston plate; 27, a first air inlet hole; 28, a first pull arm spring; 29, a second piston plate; 201, a second air inlet hole; 202, a second pull arm spring; 31, a hydraulic balloon; 32, a ground penetrating arm; 33, a device mounting plate; 34, a hydraulic sensor; 35, a probe; 36, a level sensor; 37, a pressure receiving plate; 38, a pressing plate; 39, an expansion column; 301, a elbow arm; 302, a liquid passage pipe; 303, a pull plate spring. DETAILED DESCRIPTION

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] like Figures 1-7 As shown, a shovel-type transport vehicle for underground coal mines includes: a shovel transport vehicle 11, wherein a set of parking brake wheel fixing mechanisms 2 controlled by the system are provided at the wheel positions on both sides of the main frame of the shovel transport vehicle 11. Each set of parking brake wheel fixing mechanism 2 includes a single-column hydraulic press 21, a hydraulic ball 31, a parking wedge 25, and an intelligent detection component; A single-column hydraulic press 21 is fixedly installed on both sides of the wheel. A limit post 22 is provided at the extension end of its telescopic arm. A steering turntable 23 is rotatably installed inside the limit post 22. A push block arm 24 is movably connected to the bottom of the steering turntable 23. A parking wedge 25 is located at the end of the push block arm 24. A hydraulic ball 31 is located outside the limit post 22. An intelligent detection component is installed on the single-column hydraulic press 21. When the driver turns off the engine and parks the vehicle, the system automatically controls the single-column hydraulic press 21 to work, drives the telescopic arm to extend downward, and squeezes the hydraulic ball 31. The liquid pressure inside the ball 31 pushes the steering turntable 23 to drive the parking wedge 25 to turn in the direction of the wheel. As the single-column hydraulic press 21 continues to press down, the push arm 24 extends and inserts the parking wedge 25 under the tire to fix the wheel. When the vehicle restarts, the intelligent detection component monitors the horizontal status of the shovel transport vehicle 11 in real time. After data processing, it controls the parking wedge 25 located in the opposite direction of the vehicle's tilt to retract first, in order to prevent the vehicle from slipping in the mine working conditions.

[0020] The system is automatically controlled and triggered when the driver turns off the engine and parks the vehicle, eliminating the need for manual operation and improving the convenience and safety of underground coal mine operations.

[0021] The system employs hydraulic drive and mechanical linkage to ensure secure parking and effectively prevent vehicles from slipping on slopes or in mine tunnels.

[0022] Single-column hydraulic press 21: As the core power source, it drives the telescopic arm to extend downward, providing downward pressure so that the parking wedge 25 can be reliably inserted under the wheel.

[0023] It works in conjunction with the hydraulic balloon 31 to transmit pressure, and its structure is simple and reliable.

[0024] The intelligent detection assembly further comprises a device mounting plate 33 fixed to the outer wall of the single-column hydraulic press 21 and having the same level as the frame of the shovel plate carrier 11, and the horizontal sensor 36 is fixed to the device mounting plate 33.

[0025] The upper wall of the device mounting plate 33 is further provided with a hydraulic sensor 34, and the detection end of the hydraulic sensor 34 is provided with a probe 35, the top end of the probe 35 is fixed in the hydraulic ballonet 31, for detecting the change of the hydraulic pressure in the hydraulic ballonet 31, and transmitting to the system through the hydraulic sensor 34.

[0026] The horizontal sensor 36 detects the horizontal state of the shovel plate carrier 11 in real time, controls the retraction sequence of the parking wedge 25 through data processing, and preferentially retracts the wedge in the opposite direction of the vehicle inclination, effectively preventing the vehicle from sliding when starting.

[0027] The horizontal sensor 36 is installed on the device mounting plate 33, ensuring that the detection accuracy is consistent with the level of the frame.

[0028] The upper wall of the hydraulic ballonet 31 is fixedly provided with a pressure plate 37, and the lower wall of the hydraulic ballonet 31 is fixedly provided with an extrusion plate 38, which is in sliding connection with the limiting column 22. The pressure plate 37 is fixedly connected with the limiting column 22, and the diameters of the extrusion plate 38 and the pressure plate 37 are smaller than that of the hydraulic ballonet 31.

[0029] The hydraulic ballonet 31: As a hydraulic medium container, it generates liquid pressure when extruded, which is used to control the action of the steering turntable 23 and the push block arm 24, realizing steering and stretching.

[0030] In cooperation with the hydraulic sensor 34, the hydraulic state is monitored in real time, ensuring that the vehicle door cannot be opened before parking is completed, and the safety is enhanced.

[0031] The lower wall of the extrusion plate 38 is fixedly provided with a ground detection arm 32, which is located away from the wheel. The end of the ground detection arm 32 away from the extrusion plate 38 is fixedly provided with an elbow arm 301. The ground detection arm 32 is in an arc shape, and the arc is curved away from the wheel. The lowest end of the ground detection arm 32 is lower than the lowest end of the parking wedge 25.

[0032] The ground detection arm 32 contacts the ground before the parking wedge 25, triggering the hydraulic system, ensuring that the parking process is orderly; the elbow arm 301 is designed in an arc shape, facing away from the wheel, avoiding interference with the wheel, and at the same time, the lowest end is lower than the parking wedge 25, preferentially contacting the ground.

[0033] The side of the steering turntable 23 away from the wheel is provided with a reserved groove, and two pull disc springs 303 and an expansion column 39 are fixedly arranged in the reserved groove. The top of each of the two pull disc springs 303 is fixedly connected with the limiting column 22, and the expansion column 39 is fixedly connected with the bottom wall of the reserved groove. The expansion column 39 is in communication with the hydraulic balloon 31.

[0034] The push block arm 24 is composed of a bottom arm 241, a middle arm 242 and a first arm 243. The width and height of the bottom arm 241 are greater than those of the middle arm 242, and the width and height of the middle arm 242 are greater than those of the first arm 243. The bottom arm 241, the middle arm 242 and the first arm 243 are in a multi-stage telescopic rod structure.

[0035] The first arm 243 is rotationally connected with the parking wedge 25, and the bottom arm 241 is rotationally connected with the steering turntable 23. The rotation angle range of the parking wedge 25 and the first arm 243 is 0-15°, the rotation angle range of the bottom arm 241 and the steering turntable 23 is 0-15°, and the rotation angle range of the steering turntable 23 and the limiting column 22 is 0-90°.

[0036] The parking wedge 25 is directly inserted below the tire, and the mechanical wedge structure is used to fix the wheel and prevent the vehicle from moving, which is suitable for the rough ground conditions in the coal mine.

[0037] The middle arm 242 penetrates into the inside of the bottom arm 241, and the middle arm 242 and the bottom arm 241 are in sliding connection. The first arm 243 penetrates into the inside of the middle arm 242, and the first arm 243 and the middle arm 242 are in sliding connection. The end of the bottom arm 241 away from the parking wedge 25 is fixedly connected with a liquid passage pipe 302, and the liquid passage pipe 302 is in communication with the hydraulic balloon 31.

[0038] The top end of the middle arm 242 is fixedly provided with a first piston plate 26. The inside of the first piston plate 26 is provided with a first air inlet hole 27, and the first piston plate 26 is further fixedly provided with a first pull arm spring 28. The top end of the first arm 243 is fixedly provided with a second piston plate 29. The inside of the second piston plate 29 is provided with a second air inlet hole 201, and the second piston plate 29 is further fixedly provided with a second pull arm spring 202.

[0039] When the shovel carrier 11 runs in the coal mine, all the single-column hydraulic machines 21 are in the initial state, the telescopic arms of the single-column hydraulic machines 21 are in the retracted state, and the parking wedge 25 hangs below the single-column hydraulic machine 21 and does not contact the ground. When the driver parks and turns off the engine, the system automatically controls all the single-column hydraulic machines 21 to work. The telescopic arms of the single-column hydraulic machines 21 extend to the ground. With the extension of the telescopic arms of the single-column hydraulic machines 21, the ground detection arm 32 contacts the ground before the parking wedge 25. After the elbow arm 301 contacts the ground, under the continuous downward pressure, the whole ground detection arm 32 first pushes the pressing plate 38 to rise along the limiting column 22, and presses the hydraulic balloon 31. At this time, the hydraulic sensor 34 can detect the changing state of the hydraulic balloon 31 in real time through the probe 35. After the hydraulic data in the hydraulic balloon 31 does not reach the specified value, the driver cannot open the door to get off the vehicle. Only after all the parking wedges 25 are fixed to the wheels, the door can be opened to get off the vehicle. Because the shovel carrier 11 is heavy and composed of two sections of the frame, the cab is at the hinge of the two sections of the frame, which prevents the driver from getting off the vehicle and causing danger when the vehicle slips.

[0040] When the hydraulic balloon 31 is squeezed, the liquid in the hydraulic balloon 31 will first enter the expansion column 39, causing the expansion column 39 to expand and lengthen, and the steering turntable 23 to be pushed to rotate 90° towards the wheel direction. The continuous extension of the telescopic arm of the single-column hydraulic machine 21 causes the liquid in the hydraulic balloon 31 to enter the push block arm 24 again through the liquid pipe 302. With the increase of the hydraulic pressure in the push block arm 24, the middle arm 242 and the first arm 243 are gradually extended, pushing the parking wedge 25 to insert under the wheel and continuously providing a pushing force to the parking wedge 25. The single-column hydraulic machine 21 always remains in the extended state before the next start of the vehicle; The rotation angle range of the parking wedge 25 and the first arm 243 is 0-15°, and the rotation angle range of the bottom arm 241 and the steering turntable 23 is 0-15°, which increases the fault tolerance.

[0041] When the vehicle is started next time, the inclination angle of the position where the vehicle is parked is detected by the multiple horizontal sensors 36. After data processing, the parking wedge 25 located in the opposite direction of the inclination of the vehicle is preferentially retracted to prevent the vehicle from slipping in the mine working condition.

[0042] When the parking wedge 25 needs to be retracted, the telescopic arm of the single-column hydraulic machine 21 is retracted, the hydraulic balloon 31 loses the squeezing force, and the liquid in the expansion column 39 and the push block arm 24 flows back to the hydraulic balloon 31. At this time, the steering turntable 23 is pulled back by 90° by the pull plate spring 303 for resetting, and the first pull arm spring 28 and the second pull arm spring 202 pull back the middle arm 242 and the first arm 243, respectively, for resetting.

[0043] Working steps: Parking triggering step: when the driver turns off the engine and parks, the system automatically controls all single-column hydraulic machines 21 to work, driving the telescopic arm to extend downward to the ground.

[0044] Ground contact and hydraulic triggering step: the elbow arm 301 of the ground detection arm 32 first contacts the ground. With the continuous downward pressure of the single-column hydraulic machine 21, the squeezing plate 38 rises, squeezing the hydraulic balloon 31, and the hydraulic sensor 34 monitors the hydraulic change through the probe 35.

[0045] Turning and stretching steps: the liquid in the hydraulic balloon 31 first enters the expansion column 39, which expands and pushes the steering turntable 23 to turn 90° to the wheel direction; then the liquid enters the push block arm 24 through the liquid pipe 302, which pushes the middle arm 242 and the first arm 243 to expand step by step, and inserts the parking wedge 25 under the wheel.

[0046] State confirmation and locking step: after the hydraulic sensor 34 confirms that the hydraulic data reaches the specified value, the system allows the door to be opened; otherwise, the door remains locked to ensure firm parking.

[0047] Starting and retracting steps: when the vehicle is restarted, the intelligent detection component detects the vehicle level state through the horizontal sensor 36, and after data processing, the parking wedge 25 in the opposite direction of the vehicle tilt is preferentially controlled to retract; the single-column hydraulic machine 21 retracts the arm, the hydraulic balloon 31 releases the pressure, the pull plate spring 303 pulls the steering turntable 23 to reset, and the first pull arm spring 28 and the second pull arm spring 202 pull the push block arm 24 to retract.

[0048] The above describes the embodiments of the present application, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are only illustrative and not restrictive. Those skilled in the art can make many forms under the inspiration of the present embodiments, which are all within the protection of the present embodiments.

Claims

1. A shovel plate carrier for use in a coal mine, characterised in that, The utility model relates to a kind of parking mechanism of shovel carrier vehicle, including: Shovel carrier vehicle (11), the main frame body both sides of the shovel carrier vehicle (11) are equipped with a set of parking mechanism (2) of system-controlled fixed wheel mechanism in wheel position; Each set of the parking mechanism (2) includes single-column hydraulic machine (21), hydraulic balloon (31), parking wedge (25) and intelligent detection component; The single-column hydraulic machine (21) is fixedly installed on both sides of the wheel, the extension end of telescopic arm is provided with limit post (22), the limit post (22) is rotatably installed with steering turntable (23) inside, the steering turntable (23) bottom is movably connected with pusher arm (24), and the parking wedge (25) is located at the end of pusher arm (24);The hydraulic balloon (31) is located outside the limit post (22), and the intelligent detection component is installed on the single-column hydraulic machine (21); When driver engine off parking, system automatically controls single-column hydraulic machine (21) work, drives telescopic arm to stretch down, extrudes hydraulic balloon (31) simultaneously, uses liquid pressure in balloon to push steering turntable (23) and drive parking wedge (25) to turn to wheel direction, and with single-column hydraulic machine (21) continuously press down, make pusher arm (24) stretch, and parking wedge (25) is inserted into below tire to realize wheel fixation; When vehicle restarts, intelligent detection component detects the horizontal state of shovel carrier vehicle (11) in real time, after data processing, control parking wedge (25) in the direction opposite to the inclination of vehicle is preferentially withdrawn, to prevent the occurrence of car accident under mine working condition.

2. A coal mine underground use of shovel plate carrier according to claim 1, characterized in that, The intelligent detection component further includes device mounting plate (33), the device mounting plate (33) is fixed on the outer wall of single-column hydraulic machine (21), and the device mounting plate (33) is the same as the levelness of the frame of shovel carrier vehicle (11), and the horizontal sensor (36) is fixed on the device mounting plate (33).

3. A coal mine underground use of shovel plate carrier according to claim 2, characterized in that, The upper wall of the device mounting plate (33) is further provided with a hydraulic sensor (34), and the detection end of the hydraulic sensor (34) is provided with a probe (35), and the top end of the probe (35) is fixed in the hydraulic balloon (31), for detecting the change of hydraulic pressure in the hydraulic balloon (31), and transmitting to the system through the hydraulic sensor (34).

4. A coal mine underground use of shovel plate carrier according to claim 1, characterized in that, The upper wall of the hydraulic balloon (31) is fixedly provided with a pressure plate (37), and the lower wall of the hydraulic balloon (31) is fixedly provided with an extrusion plate (38), the extrusion plate (38) is slidably connected with the limit post (22), the pressure plate (37) is fixedly connected with the limit post (22), and the diameters of the extrusion plate (38) and the pressure plate (37) are smaller than the diameter of the hydraulic balloon (31).

5. A coal mine underground use of shovel plate carrier according to claim 4, characterized in that, The lower wall of the extrusion plate (38) is fixedly provided with a ground probe arm (32), the ground probe arm (32) is located on the side away from the wheel, and the end of the ground probe arm (32) away from the extrusion plate (38) is fixedly provided with an elbow arm (301).

6. A coal mine underground use of shovel plate carrier according to claim 1, characterized in that, The direction adjusting turntable (23) is provided with a reserved groove on the side away from the wheel, and two pull disc springs (303) and an expansion column (39) are fixedly arranged in the reserved groove, the top of each of the two pull disc springs (303) is fixedly connected with the limiting column (22), the expansion column (39) is fixedly connected with the bottom wall of the reserved groove, and the expansion column (39) and the hydraulic balloon (31) are in communication.

7. A coal mine underground use of shovel plate carrier according to claim 1, characterized in that, The push block arm (24) is composed of a bottom arm (241), a middle arm (242) and a head arm (243), the width and height of the bottom arm (241) are greater than those of the middle arm (242), the width and height of the middle arm (242) are greater than those of the head arm (243), and the bottom arm (241), the middle arm (242) and the head arm (243) are in a multi-stage telescopic rod structure.

8. A coal mine underground use of shovel plate carrier according to claim 7, characterized in that, The head arm (243) is rotationally connected with the parking wedge block (25), the bottom arm (241) is rotationally connected with the direction adjusting turntable (23), the rotation angle range of the parking wedge block (25) and the head arm (243) is 0-15°, the rotation angle range of the bottom arm (241) and the direction adjusting turntable (23) is 0-15°, and the rotation angle range of the direction adjusting turntable (23) and the limiting column (22) is 0-90°.

9. A coal mine underground use of shovel plate carrier according to claim 8, characterized in that, The middle arm (242) penetrates into the inside of the bottom arm (241) and is in sliding connection with the bottom arm (241), the head arm (243) penetrates into the inside of the middle arm (242) and is in sliding connection with the middle arm (242), and the end of the bottom arm (241) away from the parking wedge block (25) is fixedly connected with a liquid passage pipe (302) in communication with the hydraulic balloon (31).

10. A coal mine underground use of shovel plate carrier according to claim 9, characterized in that, The top end of the middle arm (242) is fixedly provided with a first piston plate (26), the inside of the first piston plate (26) is provided with a first air inlet hole (27), and the first piston plate (26) is further fixedly provided with a first pull arm spring (28), the top end of the head arm (243) is fixedly provided with a second piston plate (29), the inside of the second piston plate (29) is provided with a second air inlet hole (201), and the second piston plate (29) is further fixedly provided with a second pull arm spring (202).

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