Automatic brake mechanism arranged on mine car

Abstract

The invention discloses an automatic brake mechanism arranged on a mine car, and belongs to the technical field of mine car brake mechanisms, the automatic brake mechanism comprises a car frame and a control box mounted on the car frame, an insertion plate is rotatably mounted on the car frame, wheels matched with a track are mounted below the car frame, a top plate is arranged on the inner side of the track, and the top plate is arranged on the inner side of the track. A transverse rod is rotationally arranged on the control box, a shifting rod is fixedly arranged at the end, penetrating through the control box, of the transverse rod, and a pressing rod matched with the shifting rod is arranged on the wheel. By changing the control structure in the control box, the vehicle does not need to turn the direction of the frame in the process of exiting from the mine, and the running speed of the frame is not limited, so that the whole operation is safer and more reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of brake mechanisms for mining vehicles, and in particular to an automatic brake mechanism arranged on a mining vehicle. Background Art

[0002] In shaft and tunnel transportation, track slopes are prone to runaway car accidents. In order to cope with the threat of runaway car accidents, anti-runaway car devices are generally installed on track slopes.

[0003] Chinese patent CN203544013U discloses a new type of automatic braking device for a mine car, including a rotating shaft, two braking devices and a trigger device. The rotating shaft is arranged at the bottom of the mine car through two fixed sleeves, and a stop shaft is respectively provided at both ends of the rotating shaft. A stop block is provided on the rotating shaft between the fixed sleeve and the stop shaft. The trigger device is fixedly arranged on the wheel on one side of the mine car. This scheme uses centrifugal force as braking force, does not consume any energy, and is energy-saving and safe.

[0004] The above-mentioned device uses centrifugal force as braking force, so that the brake pads move down to the track, thereby stopping the trolley on the track. However, in actual use, the above-mentioned device also limits the speed at which the trolley exits the mine through the track. When encountering special circumstances that require the trolley to evacuate from the mine urgently, the brake pads in the above-mentioned device will move down to the track due to the increase in the speed of the trolley, thereby affecting the normal driving of the trolley. In summary, the above-mentioned device still has room for improvement.

[0005] Therefore, it is necessary to provide an automatic braking mechanism configured on a mining car to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide an automatic braking mechanism configured on a mine car to solve the problem that the existing device proposed in the above background technology uses centrifugal force as the braking force to move the brake pads down to the track, thereby stopping the trolley on the track, but in actual use, the above device also limits the speed of the trolley exiting the mine through the track. When encountering special circumstances that require the trolley to evacuate from the mine urgently, the brake pads in the above device will move down to the track due to the increase in the speed of the trolley, thereby affecting the normal driving of the trolley.

[0007] Based on the above ideas, the present invention provides the following technical solutions: an automatic brake mechanism configured on a mine car, comprising a frame and a control box installed on the frame, a plug plate is rotatably installed on the frame, a wheel matching with a track is installed below the frame, a top plate is arranged on the inner side of the track, a cross bar is rotatably arranged on the control box, a lever is fixedly arranged on one end of the cross bar passing through the control box, and a pressure rod matching with the lever is arranged on the wheel; A boss is fixedly provided on the top surface of the plug plate, a first pull plate and a second pull plate are slidably provided in the control box, and a limit assembly matching with the boss is provided between the first pull plate and the second pull plate, the cross bar is located on the side of the first pull plate close to the second pull plate, and a first push rod is fixedly provided on the cross bar, when the vehicle slides down the slope, the first push rod can push the first pull plate so that the distance between the first pull plate and the second pull plate increases, during which the limit assembly between the first pull plate and the second pull plate will disengage from the boss, so that the plug plate can deflect downward and press against one side of the top plate.

[0008] As a further solution of the present invention: limit plates are provided on both sides of the plug plate, the limit plates are located below the plug plate, the limit plates can rotate relative to the frame, the limit plates are arranged in an L shape as a whole, and a protruding limit portion is provided at the bottom end of the limit plates.

[0009] As a further solution of the present invention: the limiting assembly includes a pull rope arranged between the first pull plate and the second pull plate, a clamping block is arranged at the pull rope, and the pull rope passes through the clamping block and slidably cooperates with the clamping block.

[0010] As a further solution of the present invention: a slot matching with the card block is formed on the boss, and one end of the card block is inserted into the slot.

[0011] As a further solution of the present invention: a push rod is provided at the first pull plate, the push rod passes through the first pull plate and is fixedly matched with the first pull plate, a tension spring is fixedly provided between the first pull plate and the second pull plate, the tension spring is sleeved on the outside of the push rod, a fixing plate is provided on the side of the first pull plate away from the second pull plate, the fixing plate is fixedly connected to the control box, and the first pull plate and the fixing plate are elastically matched.

[0012] As a further solution of the present invention: a guide rod is fixedly provided on the outer surface of the second pull plate, the guide rod passes through the control box and slides with it, a sleeve is fixedly provided on the end of the control box close to the guide rod, the end of the guide rod away from the second pull plate extends into the sleeve and seals with it, an exhaust hole is provided on the end surface of the sleeve away from the control box, an air inlet hole is provided on the outer peripheral wall of the sleeve, the inner diameter of the exhaust hole is smaller than the inner diameter of the air inlet hole, and a one-way valve is installed at the air inlet hole so that external gas can only enter the sleeve in one direction through the air inlet hole.

[0013] As a further solution of the present invention: an articulated shaft is arranged at one end of the plug plate away from the control box, the articulated shaft is fixed on the vehicle frame, and the articulated shaft passes through the plug plate and rotates in cooperation with the plug plate.

[0014] As a further solution of the present invention: a first spring is arranged between the fixed plate and the first pulling plate, and the first spring is sleeved on the outside of the push rod.

[0015] As a further solution of the present invention: a through strip groove is provided on the side wall of the control box, and one end of the clamping block passes through the strip groove and matches with the clamping groove on the boss.

[0016] As a further solution of the present invention: the number of the tracks is set to two and the two tracks are arranged in parallel, and the cross-section of the track is an "I" shape.

[0017] Compared with the prior art, the present invention has the following beneficial effects: By cooperating with the top plate, when the frame loaded with materials suddenly slides down during the uphill process, one end of the plug plate can be deflected downward and abut against one side of the top plate, thereby braking the frame. Since the braking is achieved through a mechanical structure, the device as a whole is relatively stable and easy to maintain. In addition, by cooperating with the track, the frame can be prevented from flipping over during the braking process.

[0018] By changing the control structure in the control box, the vehicle does not need to turn the direction of the frame when exiting the mine, and the frame's travel speed will not be restricted, making the overall operation safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the plug board and the limit plate of the present invention; Figure 3 It is a schematic diagram of the structure of the pressure rod and the shifting rod of the present invention; Figure 4 It is a schematic diagram of the internal structure of the control box of the present invention; Figure 5 It is a schematic diagram of the track and top plate structure of the present invention; Figure 6 It is a schematic diagram of the structure of the first pull plate and the second pull plate of the present invention; Figure 7 It is a schematic diagram of the pull rope and the clamping block structure of the present invention; Figure 8 It is a schematic diagram of the cooperation between the clamping block and the boss of the present invention; Fig. 9 The present invention Figure 2 A schematic diagram of the enlarged structure at point A; Fig.10 The present invention Figure 4 A schematic diagram of the enlarged structure at B; Fig.11 It is a schematic diagram of the circular shaft structure of the present invention.

[0020] In the figure: 1, frame; 101, wheel; 2, control box; 201, slide; 3, hook; 4, horizontal axis; 5, limit plate; 501, limit part; 6, plug plate; 601, boss; 6011, slot; 7, connecting rod; 701, round shaft; 8, lever; 9, cross bar; 901, first push rod; 10, rotating shaft; 1001, second push rod; 11, card plate; 12, pressure rod; 13, column; 14, short rod; 1401, baffle; 15, long rod; 1501, protrusion; 16, annular plate; 17, connecting block; 18, pull rod; 19, track; 20, top plate; 21, fixed plate; 22, first pull plate; 23, pull rope; 24, top rod; 25, tension spring; 26, second pull plate; 27, sliding sleeve; 28, clamping block; 29, sleeve; 2901, exhaust hole; 2902, air inlet; 30, end cover; 31, guide rod. DETAILED DESCRIPTION

[0021] like Figure 1-10 As shown, an automatic brake mechanism configured on a mining vehicle comprises a vehicle frame 1 and a control box 2 mounted on the vehicle frame 1, wherein a plug plate 6 is provided on one side of the control box 2 on the vehicle frame 1, Figure 5 As shown, a wheel 101 is installed under the frame 1, so that the frame 1 can travel on the track 19. The number of the tracks 19 is set to two and they are arranged in parallel. The cross-section of the track 19 is an "I" shape, and a top plate 20 is arranged between the two tracks 19. In actual use, the top plate 20 can be fixedly installed on the ground. When the frame 1 stalls on a slope, the rotation speed of the wheel 101 increases, so that the control box 2 controls one end of the plug plate 6 to fall on the ground and cooperate with the top plate 20, so as to stop the frame 1.

[0022] Specifically, refer to Figure 1-Figure 5 As shown, a cross bar 9 and a rotating shaft 10 are respectively installed at both ends of the control box 2, and the cross bar 9 and the rotating shaft 10 are both rotatably matched with the control box 2, wherein a lever 8 is fixedly arranged at one end of the cross bar 9 passing through the control box 2, and a pressure rod 12 matched with the lever 8 is fixedly arranged at the wheel hub of the wheel 101 and located at the inner side, and the pressure rod 12 and the lever 8 are on the same vertical plane, so that the pressure rod 12 can drive the lever 8 to deflect during the rotation of the wheel 101; Further, a short rod 14 and a long rod 15 are slidably provided on the inner bottom surface of the control box 2, referring to Figure 4As shown, the short rod 14 is elastically matched with the control box 2, and a stopper 1401 is fixedly provided on the short rod 14, and the stopper 1401 is vertically arranged, and a first push rod 901 matched with the stopper 1401 is fixedly provided on the cross bar 9. In actual use, the stopper 1401 can be squeezed during the deflection of the first push rod 901 driven by the cross bar 9, so as to prompt the short rod 14 to move relative to the long rod 15. A protrusion 1501 is fixedly provided on the side of the long rod 15 and near the end thereof, and the short rod 14 can contact the protrusion 1501 during the movement relative to the long rod 15. Combination Figure 4 , Figure 9-10 As shown, a second push rod 1001 is fixedly provided on the rotating shaft 10, and the second push rod 1001 is located below the rotating shaft 10, and a slot matching with the second push rod 1001 is opened on the long rod 15. When the long rod 15 moves relative to the control box 2, the second push rod 1001 can be deflected through the slot, thereby driving the rotating shaft 10 to rotate.

[0023] Reference Figure 3-Figure 4 As shown, the rotating shaft 10 passes through one end of the control box 2 and is fixedly provided with a connecting block 17, and a hook 3 is rotatably provided on the frame 1, and a pull rod 18 is hinged between the hook 3 and the connecting block 17, and a U-shaped card plate 11 is fixedly provided on the top surface of the plug plate 6, and the bottom end position of the hook 3 is located on the inner side of the card plate 11, which is used to limit the plug plate 6.

[0024] In the process of transporting materials underground, a traction force is often applied to one end of the frame 1 to drive the frame 1 to move along the track 19 toward the inside of the well. During the movement, it is inevitable to pass through a slope. Since the frame 1 is loaded with materials, the overall weight of the frame 1 is relatively large. At this time, if the pulling force applied to the frame 1 suddenly disappears, the frame 1 will slide down along the slope, thereby causing a safety accident. In this solution, through the provision of the plug plate 6, in actual application, when the frame 1 is towed and in the process of going uphill, the pressure rod 12 on the wheel 101 can drive the lever 8 to deflect counterclockwise (refer to Figure 2 The deflection direction of the middle lever 8), at this time, the lever 8 drives the first push rod 901 to move in a direction away from the blocking bar 1401 through the cross bar 9. In this state, the first push rod 901 does not push the short rod 14 to move; However, when the traction of the frame 1 is lost during the uphill process, the frame 1 will slide down the slope. At this time, the pressure rod 12 on the wheel 101 will drive the lever 8 and the cross bar 9 to rotate clockwise, thereby prompting the first push rod 901 to rotate in the direction close to the stop bar 1401 and squeeze the stop bar 1401, so that the short rod 14 connected to the stop bar 1401 can move in the direction close to the protrusion 1501. Since the speed of the frame 1 when sliding down is relatively fast, under the action of inertia, the pressure rod 12 can drive the lever 8 to deflect a larger angle, so that the first push rod 901 pushes the stop bar 1401 to move a longer distance, so that the short rod 14 can drive the long rod 15 to move in the direction away from the plug board 6 through the protrusion 1501, and the notch on the long rod 15 cooperates with the second push rod 1001, so that the long rod 15 can drive the second push rod 1001 and the rotating shaft 10 to deflect during the movement relative to the control box 2. Figure 4 As shown, when the rotating shaft 10 deflects, the connecting block 17 can pull the hook 3 and the card plate 11 apart through the pull rod 18, so that the end of the plug plate 6 close to the control box 2 can fall down and cooperate with the top plate 20 between the two tracks 19, thereby stopping the frame 1 and preventing it from continuing to slide down along the slope; When traction is applied to the other end of the frame 1, the unloaded frame 1 will move in the opposite direction on the track 19 and move out of the mine. At this time, during the rolling process of the wheel 101, the pressure rod 12 will squeeze the lever 8 to deflect clockwise ( Figure 2 In the process, the cross bar 9 drives the first push rod 901 to rotate toward the direction close to the baffle 1401 and squeezes the baffle 1401 to move relative to the control box 2, and the baffle 1401 can drive the short rod 14 to move toward the direction close to the protrusion 1501. However, due to the limited rotation speed of the wheel 101, the pressure rod 12 drives the lever 8 and the first push rod 901 to deflect at a small angle, so that the short rod 14 does not drive the long rod 15 to move through the protrusion 1501. In this state, the plug board 6 is still in a stable state.

[0025] Furthermore, both sides of the plug plate 6 are provided with a limit plate 5, the limit plate 5 is located below the plug plate 6, and the limit plate 5 can rotate relative to the frame 1. Figure 3 , Figure 5 As shown, the limit plate 5 is overall configured to be L-shaped, and a protruding limit portion 501 is provided at the bottom end of the limit plate 5. During the downward rotation of the plug plate 6, the plug plate 6 can drive the limit plate 5 to deflect to both sides, so that the limit portion 501 is inserted into the inner side of the "I"-shaped track 19. The cooperation between the limit portion 501 and the track 19 can prevent the frame 1 from overturning during emergency braking.

[0026] In summary, this device cooperates with the top plate 20 through the provided plug plate 6. When the frame 1 loaded with materials suddenly slides down during the uphill process, one end of the plug plate 6 can be deflected downward and abut against one side of the top plate 20, thereby braking the frame 1. Since the braking is achieved through a mechanical structure, the device as a whole is relatively stable and easy to maintain. In addition, the provided limit portion 501 cooperates with the track 19, which can also prevent the frame 1 from flipping over during the braking process.

[0027] Reference Figure 5-Figure 11 As shown, although the above scheme can stop the frame 1 on the slope by the plug plate 6, when the frame 1 increases in speed during the process of moving out of the mine, the plug plate 6 may deflect downward, so that the frame 1 is stopped. In order to avoid this problem, the above scheme is improved. The improved structure is specifically referred to in Figure 5-Figure 11 , specifically: refer to Figure 6 As shown, a boss 601 is fixedly provided on the top surface of the plug plate 6, a first pull plate 22 and a second pull plate 26 are slidably provided in the control box 2, and a limiter assembly matching with the boss 601 is provided between the first pull plate 22 and the second pull plate 26; The cross bar 9 is located on the side of the first pull plate 22 close to the second pull plate 26. In actual use, when the vehicle slides down the slope, the cooperation between the pressure rod 12 and the lever 8 can drive the cross bar 9 and the first push rod 901 to deflect, so that the first pull plate 22 is pushed by the first push rod 901, so that the distance between the first pull plate 22 and the second pull plate 26 increases, so that the limit assembly between the first pull plate 22 and the second pull plate 26 is disengaged from the boss 601, and the plug plate 6 is deflected downward and pressed against one side of the top plate 20.

[0028] The above-mentioned limiting assembly includes a pull rope 23 arranged between the first pull plate 22 and the second pull plate 26, and a clamping block 28 is arranged on the pull rope 23. The pull rope 23 passes through the clamping block 28 and slides with it. The boss 601 is provided with a clamping groove 6011 that cooperates with the clamping block 28. In the initial state, one end of the clamping block 28 is inserted into the clamping groove 6011 to limit the plug plate 6 and prevent one end of the plug plate 6 from deflecting downward.

[0029] A push rod 24 is provided at the first pull plate 22, and the push rod 24 passes through the first pull plate 22 and is fixedly matched with it. A tension spring 25 is fixedly provided between the first pull plate 22 and the second pull plate 26, and the tension spring 25 can be sleeved on the outside of the push rod 24. A fixing plate 21 is provided on the side of the first pull plate 22 away from the second pull plate 26. The fixing plate 21 is fixedly connected to the control box 2 by welding. The first pull plate 22 and the fixing plate 21 are elastically matched, and the above-mentioned push rod 24 passes through the fixing plate 21 and is slidably matched with it.

[0030] Further, a guide rod 31 is fixedly provided on the outer side of the second pull plate 26, and the guide rod 31 passes through the control box 2 and slides with it. A sleeve 29 is fixedly provided on the end of the control box 2 close to the guide rod 31, and the end of the guide rod 31 away from the second pull plate 26 extends into the sleeve 29 and seals with it. Figure 6 As shown, a through exhaust hole 2901 is provided on the end face of the sleeve 29 away from the control box 2, and a through air inlet hole 2902 is provided on the outer peripheral wall of the sleeve 29. The inner diameter of the exhaust hole 2901 is smaller than the inner diameter of the air inlet hole 2902. In actual use, a one-way valve can be installed at the air inlet hole 2902 so that external gas can only enter the sleeve 29 in one direction through the air inlet hole 2902.

[0031] In actual use, when the frame 1 loaded with materials slides down the slope, the pressure rod 12 on the wheel 101 can drive the lever 8 to deflect, thereby driving the cross bar 9 and the first push rod 901 to deflect, and the first push rod 901 can use the thrust of the first push rod 901 on the first pull plate 22 to drive the first pull plate 22 away from the second pull plate 26. Since the rotation speed of the wheel 101 is relatively fast when the frame 1 slides down, the first push rod 901 can push the first pull plate 22 at a relatively fast rotation speed, and at this time, the second pull plate 26 will remain stable at the moment of the first pull plate 22 moving under the action of inertia, so that the distance between the first pull plate 22 and the second pull plate 26 reaches a maximum value. In this process, the pull rope 23 between the first pull plate 22 and the second pull plate 26 will be straightened. As the pull rope 23 is straightened, the pulling force of the pull rope 23 on the card block 28 can cause one end of the card block 28 to move out of the card slot 6011, so that one end of the plug plate 6 can be deflected downward, thereby stopping the frame 1; When the unloaded carriage 1 is pulled and moves in the opposite direction on the track 19 and moves out of the mine, since the rotation speed of the wheel 101 is relatively slow, at this time, the speed at which the first pull plate 22 is driven by the first push rod 901 is relatively slow, so that the second pull plate 26 has sufficient time to react and move with the first pull plate 22. Therefore, the distance between the first pull plate 22 and the second pull plate 26 does not reach the maximum value, so that the pull rope 23 does not move one end of the block 28 out of the card slot 6011. Through the provided push rod 24, during the process of resetting the first pull plate 22, the push rod 24 can press the second pull plate 26 to reset the second pull plate 26, and through the provided sleeve 29, and the exhaust hole 2901 on the sleeve 29 The diameter is small, so during the resetting process of the second pull plate 26, the guide rod 31 is required to discharge the gas in the sleeve 29 through the exhaust hole 2901. Therefore, it takes a long time for the second pull plate 26 to be reset. Specifically, during the next time the first push rod 901 drives the first pull plate 22 to move, the second pull plate 26 has not yet reset to the initial state. Through this structure, even if the speed of the frame 1 increases during the process of moving out of the mine along the track 19, since the second pull plate 26 is not reset in time, the distance between the first pull plate 22 and the second pull plate 26 still does not reach the limit value, so that the pull rope 23 cannot pull one end of the block 28 out of the slot 6011. Therefore, the frame 1 can stably move on the track 19.

[0032] In summary, this section changes the control structure in the control box 2 so that the vehicle does not need to turn the direction of the frame 1 when exiting the mine, and the driving speed of the frame 1 will not be restricted, thereby making the overall operation safer and more reliable.

[0033] like Figure 1 As shown, a transverse shaft 4 is fixedly arranged on the frame 1, and the transverse shaft 4 passes through the hook 3 and rotates with it.

[0034] like Figure 2 As shown, a connecting rod 7 is fixedly provided on the top of the limit plate 5. Fig.11 As shown, an end cover 30 is provided at the end of the connecting rod 7, and the end cover 30 is fixedly connected to the frame 1. A stepped hole is provided on the end surface of the end cover 30 close to the connecting rod 7, and a round shaft 701 is fixedly provided at the end of the connecting rod 7. The round shaft 701 extends into the stepped hole and rotatably cooperates with the end cover 30. A first coil spring is sleeved on the outer side of the round shaft 701, and the two ends of the first coil spring are respectively fixedly connected to the inner wall of the stepped hole and the outer wall of the round shaft 701, so as to install the limit plate 5.

[0035] An articulated shaft is arranged at one end of the plug plate 6 away from the control box 2 . The articulated shaft is fixed on the vehicle frame 1 , and passes through the plug plate 6 and rotates with the plug plate 6 .

[0036] Reference Figure 4 As shown, a slide groove 201 is provided on the inner bottom surface of the control box 2, and a slider that slides with the slide groove 201 is fixedly provided on the bottom surface of the long rod 15 and the short rod 14. The cross-sections of the slider and the slide groove 201 are both set to be T-shaped. A column 13 is fixedly provided in the control box 2, and a limit spring is fixedly provided between the column 13 and the short rod 14, so as to realize the elastic connection between the short rod 14 and the control box 2.

[0037] The outer sides of the cross bar 9 and the rotating shaft 10 are both sleeved with an annular plate 16, and the annular plate 16 is fixedly installed on the inner wall of the control box 2, and the outer sides of the cross bar 9 and the rotating shaft 10 are both sleeved with a second coil spring. Specifically, the two ends of the second coil spring located at the cross bar 9 are respectively fixedly connected to the inner wall of the annular plate 16 and the outer wall of the cross bar 9, and the two ends of the second coil spring located at the rotating shaft 10 are respectively fixedly connected to the inner wall of the annular plate 16 and the outer wall of the rotating shaft 10. This structure is beneficial to the resetting of the cross bar 9 and the rotating shaft 10.

[0038] Both ends of the pull rod 18 are hinged to the connecting block 17 and the hook 3 respectively.

[0039] like Figure 6 As shown, a first spring is disposed between the fixed plate 21 and the first pull plate 22 , and the first spring can be sleeved on the outside of the push rod 24 to drive the first pull plate 22 to reset.

[0040] In order for the clamping block 28 to pass through the control box 2 , a through strip groove may be provided on the side wall of the control box 2 , so that one end of the clamping block 28 can pass through the strip groove and cooperate with the clamping groove 6011 on the boss 601 .

[0041] Reference Figure 8 As shown, a slide rod is fixedly provided at one end of the block 28 away from the boss 601 , and a slide sleeve 27 is provided on the outer sliding sleeve of the slide rod, a spring is fixedly provided between the inner end surface of the slide sleeve 27 and the slide rod, and the slide sleeve 27 is fixedly connected to the control box 2 .

[0042] A second spring is disposed at one end of the long rod 15 away from the rotating shaft 10 . The second spring is fixedly disposed between the inner end surface of the control box 2 and the long rod 15 , so as to position the long rod 15 .

Claims

1. An automatic brake mechanism configured on a mining car, comprising a frame and a control box mounted on the frame, a plug plate rotatably mounted on the frame, a wheel matched with a track mounted below the frame, a top plate disposed inside the track, characterized in that: A cross bar is rotatably provided on the control box, a lever is fixedly provided on one end of the cross bar that passes through the control box, and a pressure rod that matches the lever is provided on the wheel; A boss is fixedly provided on the top surface of the plug plate, a first pull plate and a second pull plate are slidably provided in the control box, and a limit assembly matching with the boss is provided between the first pull plate and the second pull plate, the cross bar is located on the side of the first pull plate close to the second pull plate, and a first push rod is fixedly provided on the cross bar, when the vehicle slides down the slope, the first push rod can push the first pull plate so that the distance between the first pull plate and the second pull plate increases, during which the limit assembly between the first pull plate and the second pull plate will disengage from the boss, so that the plug plate can deflect downward and press against one side of the top plate.

2. The automatic brake mechanism configured on a mining vehicle according to claim 1, characterized in that: Limiting plates are arranged on both sides of the plugging plate, the limiting plates are located below the plugging plate, the limiting plates can rotate relative to the frame, the limiting plates are arranged in an L shape as a whole, and a protruding limiting portion is arranged at the bottom end of the limiting plates.

3. The automatic brake mechanism configured on a mining vehicle according to claim 2, characterized in that: The position limiting assembly comprises a pull rope arranged between the first pull plate and the second pull plate, a clamping block is arranged at the pull rope, and the pull rope passes through the clamping block and slidably cooperates with the clamping block.

4. The automatic brake mechanism configured on a mining vehicle according to claim 3, characterized in that: The boss is provided with a slot matched with the card block, and one end of the card block is inserted into the slot.

5. The automatic brake mechanism configured on a mining vehicle according to claim 4, characterized in that: A push rod is provided at the first pull plate, the push rod passes through the first pull plate and is fixedly matched with the first pull plate, a tension spring is fixedly provided between the first pull plate and the second pull plate, the tension spring is sleeved on the outside of the push rod, a fixing plate is provided on the side of the first pull plate away from the second pull plate, the fixing plate is fixedly connected to the control box, and the first pull plate and the fixing plate are elastically matched.

6. The automatic brake mechanism configured on a mining vehicle according to claim 5, characterized in that: A guide rod is fixedly provided on the outer surface of the second pull plate, the guide rod passes through the control box and slides with the control box, a sleeve is fixedly provided on the end of the control box close to the guide rod, the end of the guide rod away from the second pull plate extends into the sleeve and seals with the sleeve, an exhaust hole is provided on the end surface of the sleeve away from the control box, an air inlet hole is provided on the outer peripheral wall of the sleeve, the inner diameter of the exhaust hole is smaller than the inner diameter of the air inlet hole, a one-way valve is installed at the air inlet hole, so that external gas can only enter the sleeve in one direction through the air inlet hole.

7. The automatic brake mechanism configured on a mining vehicle according to claim 1, characterized in that: An articulated shaft is arranged at one end of the plugboard away from the control box. The articulated shaft is fixed on the vehicle frame and passes through the plugboard and is rotatably matched with the plugboard.

8. The automatic brake mechanism configured on a mining vehicle according to claim 5, characterized in that: A first spring is arranged between the fixing plate and the first pulling plate, and the first spring is sleeved on the outer side of the push rod.

9. The automatic brake mechanism configured on a mining vehicle according to claim 4, characterized in that: A through strip groove is provided on the side wall of the control box, and one end of the clamping block passes through the strip groove and matches with the clamping groove on the boss.

10. The automatic brake mechanism configured on a mining vehicle according to claim 1, characterized in that: The number of the tracks is set to two and the two tracks are arranged in parallel, and the cross section of the track is an "I" shape.

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