A type of anti-runaway device for inclined track

Abstract

This invention relates to a runaway prevention device for inclined shaft tracks, comprising a guide rail and a car bucket, as well as a drive component and a braking component. The drive component includes a housing, a drive plate, and a control assembly. The housing is fitted over the right wheel axle and fixedly connected to the bottom of the car bucket. The drive plate is located inside the housing, dividing the housing into front and rear chambers. A spring connects the drive plate to the rear inner wall of the housing. The rear chamber is filled with water. The braking component includes a cross plate and a brake plate. A valve is located within the cavity on the left side plate of the housing where the rear chamber is located. The control assembly is located in the front chamber and is used to reduce the rotation speed of the left wheel axle in the event of a malfunction. This invention solves the problems of runaway mine cars impacting equipment or workers below the inclined shaft and the high cost of electronic braking devices.

Description

Technical Field

[0001] This invention relates to the field of coal mine equipment technology, specifically to a device for preventing runaway trains on inclined shaft tracks. Background Technology

[0002] Mining cars are narrow-gauge railway transport vehicles used in mines to transport bulk materials such as coal, ore, and waste rock. They are generally pulled by locomotives or winches. Mining cars are mainly used for underground roadways, shafts, and surface rail transport in coal mines. They are the most widely used and numerous type of transport equipment in coal mines. Mining cars travel on rails fixed in the roadways by means of wheels installed on the car body. Mine roadways are a general term for various underground spaces carved into different rocks in different directions, at different angles, with different cross-sections and lengths, serving different ranges and purposes. Depending on the angle of inclination, roadways are not always horizontal. Inclined roadways are the most common type. When mine cars transport coal ore in inclined roadways, if the traction device malfunctions or multiple mine cars break at their connection points, the mine cars will change from moving at a constant speed to accelerating along the guide rails under the influence of gravity. Once this malfunction occurs, the mine cars will impact equipment or workers below the inclined roadway, causing serious accidents. Therefore, electronic braking devices are currently used to reduce the incidence of such malfunctions. However, the electronic braking devices currently used are not only expensive to produce, but also have even higher maintenance costs.

[0003] Another type of coal mine runaway prevention device is easy to maintain and low in cost. For example, the "Coal Mine Runaway Prevention Device" with application number 202010240196.7 provides a device that activates braking when the safety rope breaks when a mine car runs away. However, the safety rope of this invention is connected between two adjacent mine cars. The reason for the runaway phenomenon is not always the separation between two adjacent mine cars. It may also be due to the failure of the traction device. When the traction device fails, multiple mine cars will accelerate together, which will cause the two adjacent mine cars to not separate and make it impossible to quickly decelerate the mine cars. The effect of the runaway prevention device is not good. Summary of the Invention

[0004] This invention addresses the problem that runaway mine cars can impact equipment or workers below the inclined shaft, and that electronic braking devices are expensive. It provides a runaway prevention device for inclined shaft tracks that can independently brake the mine car when it accelerates, based on the mine car's speed, and is also low in cost.

[0005] To solve the above problems, the technical solution of the present invention is:

[0006] A runaway prevention device for inclined aisle tracks includes a guide rail and a car bucket. The bottom of the car bucket is connected to the front and rear ends of the car bucket. A left wheel axle and a right wheel axle are rotatably connected between the two support plates. The ends of the left wheel axle and the right wheel axle extend out of the support plates and are connected to wheels that roll in contact with the guide rail. The device also includes a drive component and a brake component.

[0007] The drive unit includes a housing, a drive plate, and a control assembly. The housing is fitted over the right wheel axle and is fixedly connected to the bottom of the truck bed. The drive plate is located inside the housing and divides the housing into front and rear chambers. A spring is connected between the drive plate and the rear side of the housing. Water is filled into the rear chamber.

[0008] The braking component includes a cross plate and a brake plate. The cross plate is connected to the left side of the housing. The cross plate, the bottom of the truck bed, the left side plate of the housing, and the two bearing plates together form a cavity with an opening at the left end. The top surface of the brake plate slides in contact with the bottom of the truck bed. The right side blocks the left opening of the cavity and slides into the cavity. The left end is close to the left wheel axle. The cavity on the right side of the brake plate is filled with water-absorbing and expanding particles.

[0009] The rear chamber is located on the left side plate of the housing, where a valve is located in the cavity. The control component is located in the front chamber. When a fault occurs, the left end of the brake plate presses against the left wheel axle to reduce the rotation speed of the left wheel axle.

[0010] Furthermore, the control component includes a collar, a movable plate, and a counterweight rod. The collar is sleeved on the outside of the right wheel axle, and a rotating rod is rotatably connected between the collar and the bottom surface of the housing. A first bevel gear is sleeved on the peripheral wall of the rotating rod, and a second bevel gear meshing with the first bevel gear is sleeved on the right wheel axle. The movable plate is sleeved on the outside of the rotating rod, and a crossbar located below the movable plate is connected to the lower end of the front side of the drive plate. A groove is provided on the top surface of the crossbar, and a retaining plate located in the groove is connected to the bottom surface of the movable plate. A second spring is connected between the movable plate and the bottom surface of the housing. A counterweight rod is hinged on the peripheral wall of the rotating rod between the first bevel gear and the movable plate, and the free end of the counterweight rod presses against the movable plate.

[0011] Furthermore, when the card plate is located in the groove on the crossbar, spring two is in a compressed state and spring one is in a stretched state.

[0012] Furthermore, the valve includes a cylinder and a movable column. One end of the cylinder is closed and the other end is open. The open end of the cylinder passes through the left side plate of the housing and connects to the rear chamber. Multiple water outlet holes are arrayed on the cylinder. The movable column is a cylinder located inside the cylinder to the right of the water outlet hole. The length of the movable column is less than the length of the water outlet hole. A spring is connected between the movable column and the inner side of the closed end of the cylinder.

[0013] Furthermore, a fixing rod is fixedly connected between the upper end of the collar and the top surface inside the housing, and a roller pressing against the movable plate is rotatably connected to the free end of the counterweight rod.

[0014] Furthermore, a rotating rod is provided in the groove, and the rotating rod makes rolling contact with the front side of the card plate.

[0015] Furthermore, the left end of the brake plate is provided with a slot, which is an arc-shaped groove with an arc-shaped protrusion facing the right wheel axle and penetrating the front and rear ends of the brake plate.

[0016] Furthermore, the slot has a plurality of first protrusions evenly distributed toward the left wheel axle, and the left wheel axle peripheral wall between the two bearing plates has a plurality of second protrusions evenly distributed, and the diameter of the circle containing the top of the plurality of first protrusions is larger than the diameter of the circle containing the top of the plurality of second protrusions.

[0017] Furthermore, the brake plate is provided with an n-shaped groove with the opening facing downwards. A gripping assembly is provided in the n-shaped groove. The gripping assembly includes a rotating plate and an elastic band. The upper end of the rotating plate is rotatably connected to the support plates on the front and rear sides of the n-shaped groove via a rotating shaft. The upper end of the rotating plate is close to the connection between the left side and the top surface of the n-shaped groove. The lower end of the rotating plate is tilted to the right and extends out of the lower opening of the n-shaped groove. The lower part of the right side of the rotating plate contacts the lower end of the right side of the n-shaped groove. An elastic band is connected between the support plates on the front and rear sides of the n-shaped groove. The elastic band is supported in the middle of the left side of the rotating plate.

[0018] Furthermore, the lower end of the rotating plate is higher than the bottom surface of the guide rail, and the bottoms of the bearing plate, brake plate, and housing are all higher than the bottom surface of the guide rail.

[0019] The beneficial effects of the present invention through the above technical solution are as follows:

[0020] 1. When the bucket of the present invention accelerates along the guide rail, the control component releases the limit on the drive plate. Under the action of spring one, the drive plate moves into the rear of the housing. The water pressure in the housing increases to the point that the valve is opened to inject water into the cavity. The water-absorbing and expanding particles in the cavity absorb water and increase in volume, pushing the brake plate to the left. The left end of the brake plate presses against the left wheel axle, causing the accelerating bucket to decelerate until it stops.

[0021] 2. During the leftward movement of the brake plate of the present invention, the lower end of the right side of the n-shaped groove presses against the lower end of the right side of the rotating plate, causing the rotating plate to rotate clockwise. The lower end of the rotating plate inserts into the ground under the truck bed, further restricting the movement of the truck bed.

[0022] 3. The first protrusion on the left end face of the brake plate and the second protrusion on the left wheel axle of the present invention can increase the frictional force when the brake plate and the left wheel axle are in contact.

[0023] 4. The fixing rod between the upper end of the collar and the housing of the present invention can prevent the collar from rotating, thereby preventing the collar from affecting the rotation of the right wheel shaft. Attached Figure Description

[0024] Figure 1This is a schematic diagram of the structure of the present invention (viewed from below);

[0025] Figure 2 This is a cross-sectional view of the present invention;

[0026] Figure 3 This is a cross-sectional view (right view) of the drive component connecting to the right wheel axle of the present invention.

[0027] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0028] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle;

[0029] Figure 6 This is a schematic diagram of the structure of the movable plate connecting the card plate of the present invention;

[0030] Figure 7 This is a schematic diagram of the drive board connecting crossbar of the present invention;

[0031] Figure 8 This is a top view of the drive plate connecting crossbar of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of the valve connected to the housing of the present invention;

[0033] Figure 10 This is a cross-sectional view (enlarged view) of the valve connection housing of the present invention.

[0034] The attached diagram is labeled as follows: 1 is the guide rail, 2 is the cart bed, 3 is the wheel, 4 is the n-shaped groove, 5 is the second protrusion, 6 is the left wheel axle, 7 is the bearing plate, 8 is the first protrusion, 9 is the slot, 10 is the brake plate, 11 is the elastic band, 12 is the rotating plate, 13 is the cross plate, 14 is the housing, 15 is the hole plug, 16 is the water-absorbing and expanding granules, 17 is the cylinder, 18 is the water, 19 is the first spring, 20 is the right wheel axle, 21 is the second spring, 22 is the movable plate, 23 is the second bevel gear, 24 is the fixed rod, 25 is the collar, 26 is the drive plate, 27 is the roller, 28 is the counterweight rod, 29 is the first bevel gear, 30 is the rotating rod, 31 is the clamping plate, 32 is the cross bar, 33 is the groove, 34 is the rotating rod, 35 is the circular hole, 36 is the through hole, 37 is the water outlet, 38 is the movable column, 39 is the third spring, and 40 is the through hole. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0036] like Figures 1-10As shown, a runaway prevention device for inclined track includes a guide rail 1 and a car bucket 2. The bottom front and rear ends of the car bucket 2 are connected to a bearing plate 7. A left wheel axle 6 and a right wheel axle 20 are rotatably connected between the two bearing plates 7. The bearing plate 7 is a long strip-shaped plate arranged along the length of the car bucket 2 and perpendicular to the outer bottom surface of the car bucket 2. The ends of the left wheel axle 6 and the right wheel axle 20 extend out of the bearing plate 7 and are connected to wheels 3 that roll in contact with the guide rail 1. The left wheel axle 6 and the right wheel axle 20 are both round rods. The ends of the left wheel axle 6 and the right wheel axle 20 are respectively connected through the bearing plates 7 at the front and rear ends of the outer bottom surface of the car bucket 2. The left wheel axle 6 and the right wheel axle 20 are rotatably connected to the bearing plate 7. The device also includes a driving component and a braking component.

[0037] The drive unit includes a housing 14, a drive plate 26, and a control assembly. The housing 14 is a hollow rectangular box. The housing 14 is fitted over the right wheel axle and is fixedly connected to the bottom surface of the truck bed 2. The front and rear side plates of the housing 14 are provided with through holes 40 that fit over the right wheel axle 20. The through holes are round holes. The right wheel axle 20 and the through holes 40 are in sliding contact. The drive plate 26 is located inside the housing 14 and divides the housing 14 into front and rear chambers. The drive plate 26 is fitted over the right wheel axle 20 through a through hole 36. The peripheral wall of the drive plate 26 is in sliding contact with the inner wall of the housing 14. The drive plate 26 is a rectangular plate. A spring 19 is connected between the drive plate 26 and the rear inner wall of the housing 14. Water 18 is filled into the rear chamber. The bottom plate of the housing 14 is provided with a water inlet and a plug 15 is provided in the water inlet.

[0038] The braking component includes a horizontal plate 13 and a brake plate 10. The lower left side of the housing 14 is detachably connected to a horizontal plate 13 parallel to the bottom of the truck bed 2. The horizontal plate 13 is a rectangular plate. The front and rear ends of the horizontal plate 13 are detachably connected to the opposite sides of two support plates 7. The horizontal plate 13, the bottom of the truck bed 2, the left side plate of the housing 14, and the two support plates 7 together form a cavity with an opening at the left end. The brake plate 10 is a rectangular plate. The top surface of the brake plate 10 slides in contact with the bottom of the truck bed 2. The right side of the brake plate 10 blocks the left opening of the cavity and slides into the cavity. The left end of the brake plate 10 is close to the left wheel axle 6. The cavity on the right side of the brake plate 10 is filled with water-absorbing and expanding particles 16. The bottom surface of the brake plate 10 located in the cavity slides in contact with the top surface of the horizontal plate 13. The front and rear sides of the brake plate 10 slide in contact with the opposite sides of the two support plates 7. The water-absorbing and expanding particles 16 are high molecular weight (molecular weight ≥ 30 million) sodium polyacrylate.

[0039] The rear chamber is located on the left side plate of the housing 14, which has a valve located in the cavity. The control component is located in the front chamber. When a fault occurs (referring to a fault in the traction device that causes the truck bed to run on the guide rail 1), the left end of the brake plate 10 presses against the left wheel axle 6 to reduce the rotation speed of the left wheel axle 6.

[0040] The control assembly includes a collar 25, a movable plate 22, and a counterweight rod 28. The collar 25 is sleeved on the outside of the right wheel axle 20. The collar 25 is a circular ring whose inner surface slides in contact with the peripheral wall of the right wheel axle 20. A rotating rod 34 is rotatably connected between the collar 25 and the inner bottom surface of the housing 14. A bevel gear 29 is fixedly sleeved on the peripheral wall of the rotating rod 34. A bevel gear 23 that meshes with the bevel gear 29 is fixedly sleeved on the right wheel axle 20. The movable plate 22 is sleeved on the outside of the rotating rod 34 through a circular hole 35 in the middle. The movable plate 22 is a rectangular plate. A crossbar 32 located below the movable plate 22 is connected to the lower end of the front side of the drive plate 26. The crossbar 32 is along the length of the drive plate 26. The square rod 32 has a groove 33 on its top surface. The groove 33 is an elongated groove with an upward opening, which is set along the length of the horizontal rod 32. The bottom surface of the movable plate 22 is connected to a retaining plate 31 located in the groove 33. The retaining plate 31 is an elongated plate. A spring 21 is connected between the movable plate 22 and the bottom surface of the inner shell 14. A counterweight rod 28 is hinged to the circumference of the rotating rod 34 between the bevel gear 29 and the movable plate 22 via a hinge shaft. After the counterweight rod 28 is connected to the rotating rod 34 via the hinge shaft, the counterweight rod 28 can only rotate up and down around the connection point with the rotating rod 34. The counterweight rod 28 is a rectangular rod, and the free end of the counterweight rod 28 presses against the movable plate 22.

[0041] When the card plate 31 is located in the groove 33 on the crossbar 32, the second spring 21 is in a compressed state, the drive plate 26 is located in the front part of the housing 14, and the first spring 19 is in a stretched state.

[0042] The valve includes a cylinder 17 and a movable column 38. One end of the cylinder 17 is closed and the other end is open. The open end of the cylinder 17 passes through the left side plate of the housing 14 and connects to the rear chamber. The cylinder 17 has multiple water outlet holes 37 arranged in an array. The water outlet holes 37 are strip-shaped holes arranged along the length of the cylinder 17 and passing through the inner and outer walls of the cylinder 17. The movable column 38 is a cylinder located inside the cylinder 17 to the right of the water outlet holes 37. The diameter of the movable column 38 matches the inner diameter of the cylinder 17. The length of the movable column 38 is less than the length of the water outlet holes 37. A spring 39 connects the movable column 38 and the inner side of the closed end of the cylinder 17.

[0043] The free end of the counterweight rod 28 is rotatably connected to a roller 27 that presses against the movable plate.

[0044] A fixing rod 24 is fixedly connected between the upper end of the collar 25 and the inner top surface of the housing 14.

[0045] The groove 33 is provided with a rotating rod 30 that is rotatably connected. The rotating rod 30 is a round rod body. The rotating rod 30 and the front side of the card plate 31 are in rolling contact. The left and right ends of the rotating rod 30 are rotatably connected to the left and right inner sides of the groove 33.

[0046] The left end of the brake plate 10 is provided with a slot 9, which is an arc-shaped groove with an arc protrusion facing the right wheel axle 20 and penetrating the front and rear end faces of the brake plate 10.

[0047] The slot has multiple first protrusions 8 evenly distributed facing the left wheel axle 6, and the left wheel axle 6 between the two bearing plates 7 has multiple second protrusions 5 evenly distributed on its peripheral wall. The diameter of the circle containing the top of the multiple first protrusions 8 is larger than the diameter of the circle containing the top of the multiple second protrusions 5. Both the first protrusions 8 and the second protrusions 5 are hemispherical protrusions.

[0048] The brake plate 10 is provided with an n-shaped groove 4 with the opening facing downward. The front and rear ends of the n-shaped groove 4 penetrate through the front and rear sides of the brake plate 10, and a gripping component is provided inside the n-shaped groove 4.

[0049] The gripping assembly includes a rotating plate 12 and an elastic band 11. The rotating plate 12 is a rectangular plate. The upper end of the rotating plate 12 is rotatably connected to the support plates 7 on the front and rear sides of the n-shaped groove 4 via a rotating shaft. The upper end of the rotating plate 12 is close to the connection between the left side and the top side of the n-shaped groove 4. The lower end of the rotating plate 12 is tilted to the right and extends out of the lower opening of the n-shaped groove 4. The lower part of the right side of the rotating plate 12 is in contact with the lower end of the right side of the n-shaped groove 4. An elastic band 11 is connected between the support plates 7 on the front and rear sides of the n-shaped groove 4. The elastic band 11 is supported in the middle of the left side of the rotating plate 12.

[0050] The lower end of the rotating plate 12 is higher than the bottom surface of the guide rail 1. The bottom of the bearing plate 7, the brake plate 10, and the housing 14 are all higher than the bottom surface of the guide rail 1. When the brake plate 10 moves to the left and approaches the left wheel axle 6, the rotating plate rotates clockwise around the connection point between its upper end and the bearing plate 7 until the brake plate 10 presses against the left wheel axle 6. At this point, the lower end of the rotating plate 12 is lower than the bottom surface of the guide rail 1 and inserts into the ground under the truck bed 2.

[0051] When the brake plate 10 moves to the left until the slot on the brake plate 10 contacts the left wheel axle, the right part of the brake plate 10 is located in the cavity.

[0052] In use, when the truck bed 2 moves at a constant speed on the guide rail 1, the right wheel axle 20 drives the rotating rod 34 to rotate at a constant speed through bevel gear 23 meshing with bevel gear 29. The clamping plate 31 on the movable plate 22 is located in the groove 33, limiting the movement of the drive plate 26. When the truck bed 2 runs on the guide rail 1, the wheels 3 of the truck bed 2 accelerate on the guide rail 1. As the right wheel axle 20 accelerates with the wheels 3, the right wheel axle 20 drives the rotating rod 34 to accelerate along its own axis through bevel gear 23 meshing with bevel gear 29. During the acceleration of the rotating rod 34, it drives multiple counterweight rods 28 to accelerate. As the counterweight rods 28 accelerate, the rollers 27 at the free end of the counterweight rods 28 disengage from the pressure on the movable plate 22 until the clamping plate 31 on the movable plate 22 disengages from the groove 33 on the crossbar 32. The rotating rod 30 in the groove 33 is used to reduce the clamping plate. The frictional force when the plate 31 is dislodged from the groove 33 on the crossbar 32 causes the drive plate 26 to move towards the rear of the housing 14 under the action of the spring. The drive plate 26 squeezes the water in the housing 14, increasing the water pressure in the housing 14. During the process of increasing the water pressure in the housing 14, the drive plate 26 presses the movable column 38 in the cylinder 17 on the valve. The movable column 38 moves towards the closed end of the cylinder 17. The water in the housing 14 flows out into the cavity through the water outlet 37 on the cylinder 17. The water-absorbing and expanding particles 16 in the cavity absorb water and expand rapidly. After absorbing water, the water-absorbing and expanding particles 16 increase in volume and push the brake plate 10 to the left. The brake plate 10 presses against the left wheel axle 6. The first protrusion 8 on the left end of the brake plate 10 groove 9 rubs against the second protrusion 5 of the left wheel axle 6, causing the rotation speed of the left wheel axle 6 to gradually decrease until it stops rotating.

[0053] During the movement of the brake plate 10 to the left, the lower right side of the n-shaped groove 4 presses against the right side of the rotating plate 12, causing the rotating plate 12 to rotate clockwise. When the brake plate 10 moves to the left and presses against the left wheel axle 6, the rotating plate rotates clockwise until its lower end is below the bottom surface of the guide rail 1, and the lower end of the rotating plate 12 inserts into the ground under the truck bed 2, further restricting the movement of the truck bed 2.

[0054] Since the horizontal plate of the present invention can be detachably connected to the housing, the front and rear ends of the horizontal plate 13 can be detachably connected to the opposite sides of the two bearing plates 7, which makes it convenient to replenish or replace the water-absorbing and expanding particles 16.

[0055] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Any equivalent or similar modifications or substitutions to the technical solutions of the invention without departing from the spirit of the invention or the scope of disclosure shall fall within the protection scope of the present invention.

Claims

1. A kind of inclined drift track anti-car running device, including guide rail (1) and car hopper (2), the bottom of car hopper (2) is connected with load plate (7) in front and back, two load plates (7) are rotatably connected with left wheel shaft (6) and right wheel shaft (20), left wheel shaft (6) and right wheel shaft (20) end stretch out load plate (7), connect with the wheel (3) of guide rail (1) rolling contact, it is characterized in that, The driving member and the braking member are further included; The driving member comprises a shell (14), a driving plate (26) and a control assembly, the shell (14) is sleeved outside the right wheel shaft and fixedly connected with the bottom of the hopper (2), the driving plate (26) is located in the shell (14) and separates the shell (14) into front and rear chambers, the driving plate (26) is sleeved outside the right wheel shaft (20) and connected with the rear side of the shell (14) through a spring (19), and water (18) is injected into the rear chamber; The braking member comprises a horizontal plate (13) and a braking plate (10), the left side of the shell (14) is connected with the horizontal plate (13), the horizontal plate (13), the bottom of the hopper (2), the left side plate of the shell (14) and the two bearing plates (7) jointly form a cavity with an open left end, the top surface of the braking plate (10) is in sliding contact with the bottom of the hopper (2), the right part blocks the open left end of the cavity and is slidably extended into the cavity, and the left end of the braking plate (10) is close to the left wheel shaft (6); the cavity on the right side of the braking plate (10) is filled with water-absorbing and expanding particles (16). The left side plate of the shell (14) where the rear chamber is located is provided with a valve located in the cavity, and the control assembly is arranged in the front chamber and used for pressing the left end of the braking plate (10) against the left wheel shaft (6) when a fault occurs, so as to reduce the rotating speed of the left wheel shaft (6). The control assembly comprises a sleeve ring (25), a movable plate (22) and a counterweight rod (28), the sleeve ring (25) is sleeved outside the right wheel shaft (20), a rotating rod (34) is rotatably connected between the sleeve ring (25) and the inner bottom surface of the shell (14), a bevel gear (29) is sleeved on the peripheral wall of the rotating rod (34), a bevel gear (23) is sleeved on the right wheel shaft (20) and engaged with the bevel gear (29), the movable plate (22) is sleeved outside the rotating rod (34), a horizontal rod (32) located below the movable plate (22) is connected to the lower end of the front side surface of the driving plate (26), a recess (33) is arranged on the top surface of the horizontal rod (32), a clamping plate (31) is connected to the bottom surface of the movable plate (22) and located in the recess (33), a spring (21) is connected between the movable plate (22) and the inner bottom surface of the shell (14), and a counterweight rod (28) is hinged on the peripheral wall of the rotating rod (34) between the bevel gear (29) and the movable plate (22), and the free end of the counterweight rod (28) presses the movable plate (22).

2. A device for preventing a car from running away on an inclined track according to claim 1, characterized in that When the clamping plate (31) is located in the recess (33) on the horizontal rod (32), the spring (21) is in a compressed state, and the spring (19) is in a stretched state.

3. A device for preventing a car from running away on an inclined track according to claim 1, characterized in that The valve comprises a cylinder (17) and a movable column (38), one end of the cylinder (17) is closed, the other end is open, the open end of the cylinder (17) penetrates through the left side plate of the shell (14) and communicates with the rear chamber, a plurality of water outlets (37) are arranged on the cylinder (17), the movable column (38) is a cylinder located in the cylinder (17) on the right side of the water outlet (37), the length of the movable column (38) is less than the length of the water outlet (37), and a spring (39) is connected between the movable column (38) and the inner side surface of the closed end of the cylinder (17).

4. A device for preventing a car from running away on an inclined track according to claim 1, characterized in that The upper end of the collar (25) and the inner top surface of the shell (14) are fixedly connected with a fixed rod (24), and the free end of the counterweight rod (28) is rotatably connected with a roller (27) which presses on the movable plate.

5. A device for preventing a car from running away on an inclined track according to claim 1, characterized in that The recess (33) is provided with a rotatably connected rotating rod (30), and the rotating rod (30) and the front side of the clamping plate (31) are in rolling contact.

6. A device for preventing a car from running away on an inclined track according to claim 1, characterized in that The left end of the brake plate (10) is provided with a clamping groove (9), which is an arc-shaped protrusion penetrating through the front and rear end faces of the brake plate (10) towards the right axle (20).

7. A device for preventing a car from running away on an inclined track according to claim 6, characterized in that The clamping groove is uniformly provided with a plurality of first protrusions (8) towards the left axle (6), and the circumferential wall of the left axle (6) between the two bearing plates (7) is uniformly provided with a plurality of second protrusions (5), and the diameter of the circle on the top of the plurality of first protrusions (8) is greater than the diameter of the circle on the top of the plurality of second protrusions (5).

8. A device for preventing a car from running away on an inclined track according to claim 1, characterized in that The brake plate (10) is provided with an n-shaped groove (4) with an opening downward, and the n-shaped groove (4) is provided with a ground grabbing assembly, which comprises a rotating plate (12) and an elastic belt (11). The upper end of the rotating plate (12) is rotatably connected to the bearing plates (7) on the front and rear sides of the n-shaped groove (4) through a rotating shaft. The upper end of the rotating plate (12) is close to the junction of the left side face and the top face of the n-shaped groove (4), the lower end of the rotating plate (12) is inclined to the right and extends out of the lower end opening of the n-shaped groove (4), the right side face of the rotating plate (12) is in contact with the lower end of the right side face of the n-shaped groove (4), and the elastic belt (11) is connected between the bearing plates (7) on the front and rear sides of the n-shaped groove (4) and is supported on the middle part of the left side face of the rotating plate (12).

9. A device for preventing a car from running away on an inclined track according to claim 8, characterized in that The lower end of the rotating plate (12) is higher than the bottom surface of the guide rail (1), and the bottom of the bearing plate (7), the brake plate (10) and the shell (14) is higher than the bottom surface of the guide rail (1).

Images