Mine car stall protection device for roadway inclined shaft

Abstract

The invention discloses a mine car stall protection device for a roadway inclined shaft, and relates to the technical field of coal mine safety, the mine car stall protection device comprises a mounting frame and two mounting bottom plates, a guide rotating rod is arranged at the bottom of the mounting frame, an intercepting frame is mounted at the bottom of the guide rotating rod, and the mine car stall protection device further comprises a protection mechanism used for limiting the intercepting frame when the intercepting frame intercepts a stall mine car. The protection mechanism further comprises two sets of supporting plates which are symmetrically arranged on the two sides of the interception frame, and through arrangement of the protection mechanism, when the interception frame intercepts a stalling mine car, the mine car impacts the interception frame, and the elastic buffer rope is in a large stretching state, through cooperation of a fixed rod, a movable rod and a limiting rod, the stalling mine car is prevented from falling off; according to the anti-springback device for the mine car, secondary movement of the stopped mine car caused by the springback force of the elastic buffer rope can be effectively prevented, so that the problem of secondary collision or structural damage of the mine car due to springback is well avoided, and the reliability and the safety of the mine car stalling protection device when the stalling mine car is intercepted are improved.

Description

Technical Field

[0001] This invention relates to the field of coal mine safety technology, specifically to a mine car stall protection device for inclined shafts in roadways. Background Technology

[0002] The mine car stall protection device for inclined shafts is a safety device specifically designed to prevent mine cars from running away or slipping due to loss of control (such as brake failure, acceleration due to gravity, etc.) in inclined shafts. Its core objectives are to ensure personnel safety, avoid equipment damage, and reduce production interruptions.

[0003] When the existing mine car stall protection device is in use, if the mine car does not stall, the protection device is in normal condition. The intercepting gate can be opened and closed normally in cooperation with the drive component to allow the mine car to pass. When the mine car stalls, the intercepting gate will disengage from the drive component. At the same time, the intercepting gate will work with the elastic component to intercept the stalled mine car and gradually reduce and buffer the impact force of the stalled mine car through the elasticity of the elastic component.

[0004] While existing mine car stall protection devices can effectively buffer and intercept stalled mine cars, the elastic components are gradually stretched when intercepting an accelerating and sliding mine car. When the mine car stops, the stretched elastic components may rebound, converting elastic potential energy into reverse kinetic energy. Consequently, the thrust generated by the rebound may cause the mine car to collide with the tunnel wall, track equipment, or other mine cars, triggering a chain reaction of accidents and causing unnecessary losses.

[0005] Therefore, this invention proposes a mine car stall protection device for inclined shafts to solve the above problems. Summary of the Invention

[0006] In view of this, the technical problem to be solved by the present invention is to provide a mine car stall protection device for inclined shafts in roadways, so as to solve the problems in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a mine car stall protection device for inclined shafts, comprising a mounting frame and two mounting base plates, wherein a guide rod is provided at the bottom of the mounting frame, and an interception frame is installed at the bottom of the guide rod, and further comprising a protective mechanism for limiting the interception frame when the interception frame intercepts a stalled mine car; The protective mechanism also includes two sets of support plates, symmetrically arranged on both sides of the interceptor frame. The support plates are fixedly connected to the adjacent mounting base plate. A protective frame is fixedly connected to the support plates. Multiple U-shaped support rods are fixedly connected to the protective frame. A movable rod is rotatably connected to the side of the U-shaped support rod away from the protective frame. A torsion spring is fixedly connected between the movable rod and the U-shaped support rod. Two fixed rods are fixedly connected to the interceptor frame. When the mine car stalls, the fixed rod moves simultaneously with the interceptor frame. When the fixed rod slides towards the movable rod, it pushes the movable rod to rotate. After sliding and rebounding with the interceptor frame, either of the movable rods can limit the fixed rod.

[0008] Preferably, the protective mechanism includes multiple limiting rods, each of which is fixedly connected to the side of the protective frame near the movable rod. The limiting rod is in contact with the adjacent movable rod and is used to limit the rotation of the movable rod.

[0009] Preferably, each of the movable rods and each of the fixed rods is L-shaped, and at least two toothed blocks are fixedly connected to each of the movable rods and the fixed rods, so that when the movable rod limits the fixed rod, the toothed blocks on the movable rod and the toothed blocks on the fixed rod can mesh with each other.

[0010] Preferably, the movable rod is inclined on the protective frame, and the fixed rod is inclined on the interceptor frame.

[0011] Preferably, the protective frame has multiple flexible strips fixedly connected to the side near the movable rod, and each flexible strip is in contact with the adjacent movable rod.

[0012] Preferably, the flexible strip is configured as an arc shape.

[0013] Preferably, the flexible strip is made of rubber.

[0014] Preferably, a guiding mechanism is also included to guide the interceptor when it intercepts the stalled mine car. The guiding mechanism includes two guide posts, which are fixedly connected to both sides of the interceptor. Two limiting grooves are provided on the guide posts. A sliding groove is provided on the support plate. Two sets of flexible blocks are fixedly connected to the top of the support plate.

[0015] Preferably, the two sets of flexible blocks are symmetrically arranged on the top of the support plate, and each set of flexible blocks has multiple blocks.

[0016] Preferably, the opposite sides of the adjacent flexible blocks are arranged in an arc shape.

[0017] Compared with the prior art, the present invention provides a mine car stall protection device for inclined shafts, which has the following beneficial effects: 1. The present invention, through the setting of the protective mechanism, enables the interceptor frame to intercept a stalled mine car. When the mine car impacts the interceptor frame and the elastic buffer rope is under great tension, the cooperation of the fixed rod, movable rod and limiting rod can effectively prevent the elastic buffer rope from causing secondary movement of the already stopped mine car due to the rebound force. This effectively avoids the problem of secondary collision or structural damage to the mine car caused by the rebound, and improves the reliability and safety of the mine car stall protection device when intercepting a stalled mine car.

[0018] 2. The present invention, through the setting of the protective mechanism, enables the fixed rod to move towards the protective frame during the interception of the mine car. The movable rod, torsion spring and flexible strip can provide a certain blocking and buffering effect on the rapidly moving interception frame during the interception. Through this setting, a part of the impact force can be absorbed, thereby reducing the distance the interception frame moves when intercepting the stalled mine car. At the same time, it also reduces the stretching length of the elastic buffer rope, effectively avoiding excessive stretching of the elastic buffer rope and ensuring the service life of the mine car stall protection device.

[0019] 3. The present invention, through the setting of the guiding mechanism, ensures that after the intercepting frame disengages from the guide rod, the guide post is limited by the sliding groove. With the guidance of the guide post, the limiting groove and the sliding groove, the direction of movement of the intercepting frame during interception is always in a regular and controllable state. This makes the movement direction of the stalled mine car controllable, avoiding the derailment of the stalled mine car due to the uncontrollable movement direction of the intercepting frame during interception, and improving the controllability of the movement direction of the mine car during interception. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the protective frame of the present invention; Figure 3 This is a structural diagram of the present invention when the limiting rod is close to the movable rod; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a three-dimensional structural diagram of the interceptor frame of the present invention; Figure 6 This is a structural diagram of the guide post and the slide groove of the present invention.

[0021] In the picture: 100. Mounting bracket; 101. Guide rod; 102. Interception bracket; 200. Mounting base plate; 300. Protective mechanism; 301. Support plate; 302. Protective frame; 303. U-shaped support rod; 304. Movable rod; 305. Limiting rod; 306. Fixed rod; 307. Torsion spring; 308. Toothed block; 309. Flexible strip; 400. Guiding mechanism; 401. Guide post; 402. Limiting groove; 403. Slide groove; 404. Flexible block. Detailed Implementation

[0022] 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, some features described in the examples may be combined in other examples.

[0023] like Figures 1 to 6 As shown, this embodiment provides a mine car stall protection device for inclined shafts, including a mounting frame 100 and two mounting base plates 200. A guide rod 101 is provided at the bottom of the mounting frame 100, and an interceptor frame 102 is mounted at the bottom of the guide rod 101. It also includes a protective mechanism 300, used to limit the interceptor frame 102 when it intercepts a stalled mine car. The protective mechanism 300 also includes two sets of support plates 301, symmetrically arranged on both sides of the interceptor frame 102. The support plates 301 are fixedly connected to the adjacent mounting base plates 200, and the protective frame 302 is fixedly connected to the support plates 301. Multiple U-shaped support rods 303 are fixedly connected to the frame 302. A movable rod 304 is rotatably connected to the side of the U-shaped support rod 303 away from the protective frame 302. A torsion spring 307 is fixedly connected between the movable rod 304 and the U-shaped support rod 303. Two fixed rods 306 are fixedly connected to the intercepting frame 102. When the mine car stalls, the fixed rod 306 can move simultaneously with the intercepting frame 102. When the fixed rod 306 slides towards the movable rod 304, it can push the movable rod 304 to rotate. After sliding and rebounding with the intercepting frame 102, any movable rod 304 can limit the fixed rod 306.

[0024] The bottom end of the guide rod 101 is engaged with the top end of the interceptor frame 102. A drive source is installed on the mounting frame 100. The output end of the drive source is connected to the interceptor frame 102 via a pull rope. An elastic buffer rope is installed on the mounting base plate 200. When the mine car is in normal use, the pull rope is wound up by the drive source, which causes the interceptor frame 102 to rotate the guide rod 101 away from the support plate 301, thereby canceling the obstruction of the mine car.

[0025] When the mine car stalls, it will directly collide with the interceptor frame 102. The top of the interceptor frame 102 will detach from the guide rod 101, and the pull rope and elastic buffer rope will stretch at the same time.

[0026] The fixed rod 306 is fixed to the interceptor frame 102 by bolts. After the protective mechanism 300 is triggered, the bolts can be removed, thereby resetting the interceptor frame 102 and causing the fixed rod 306 to disengage from the limit of the movable rod 304. Then it can be reinstalled on the interceptor frame 102 for convenient use next time.

[0027] The protective mechanism 300 includes multiple limiting rods 305. Each limiting rod 305 is fixedly connected to the side of the protective frame 302 near the movable rod 304. The limiting rod 305 is in contact with the adjacent movable rod 304 and is used to limit the rotation of the movable rod 304.

[0028] Each movable rod 304 and each fixed rod 306 is L-shaped, and at least two toothed blocks 308 are fixedly connected to each of the movable rod 304 and the fixed rod 306. When the movable rod 304 limits the fixed rod 306, the toothed blocks 308 on the movable rod 304 and the toothed blocks 308 on the fixed rod 306 can mesh with each other.

[0029] By setting the toothed blocks 308, when the fixed rod 306 and the movable rod 304 are hooked at one end, the toothed blocks 308 will mesh with each other, thereby increasing the fixing effect of the movable rod 304 on the fixed rod 306 when it is limited, and improving the reliability of the fixed rod 306 when it rebounds.

[0030] Furthermore, the movable rod 304 is inclined on the protective frame 302, and the fixed rod 306 is inclined on the interceptor frame 102.

[0031] After the mine car is intercepted, when the fixed rod 306 is reset due to the rebound force of the elastic buffer rope, the movable rod 304 can hook onto the fixed rod 306 and limit its movement. By tilting the movable rod 304 and the fixed rod 306, the rebound force can be decomposed into lateral and longitudinal forces, reducing the stress between the movable rod 304 and the fixed rod 306 during rebound and improving their service life.

[0032] Furthermore, the protective frame 302 is fixedly connected to a plurality of flexible strips 309 on the side near the movable rod 304. Each flexible strip 309 is in contact with the adjacent movable rod 304. The flexible strips 309 are arc-shaped and made of rubber.

[0033] With the torsion spring 307 and flexible strip 309, both the torsion spring 307 and flexible strip 309 have good elasticity. Therefore, when the movable rod 304 is pushed, it can rebound simultaneously through the torsion spring 307 and flexible strip 309, which can improve its reset speed and prevent the movable rod 304 from failing to limit the fixed rod 306 due to slow reset speed.

[0034] Further examples: It also includes a guide mechanism 400, which is used to guide the interceptor frame 102 when it intercepts the stalled mine car. The guide mechanism 400 includes two guide posts 401, which are fixedly connected to both sides of the interceptor frame 102. Two limiting grooves 402 are opened on the guide posts 401. A sliding groove 403 is opened on the support plate 301. Two sets of flexible blocks 404 are fixedly connected to the top of the support plate 301. The two sets of flexible blocks 404 are symmetrically arranged on the top of the support plate 301, and each set of flexible blocks 404 has multiple blocks. The opposite sides of the adjacent flexible blocks 404 are set as arcs.

[0035] The lengths of the protective mechanism 300 and the guiding mechanism 400 can be changed according to the maximum impact force when the mine car stalls. The greater the impact force, the longer the protective mechanism 300 and the guiding mechanism 400 can be.

[0036] The working principle of all the content in the above embodiments is as follows: In the initial state, one side of the movable rod 304 is in contact with the limiting rod 305. Under the limitation of the limiting rod 305, the movable rod 304 cannot rotate in the direction of the limiting rod 305, and the torsion spring 307 is in the normal state.

[0037] The following explains the working principle and beneficial effects of the protective mechanism 300: When the mine car stalls, the interceptor 102 moves the fixed rod 306 towards the movable rod 304. As it approaches, the fixed rod 306 pushes the movable rod 304 towards the flexible strip 309, causing the flexible strip 309 to elastically deform and the torsion spring 307 to twist. As the interceptor 102 continues to move the fixed rod 306, it becomes displaced from the movable rod 304. At this point, the movable rod 304 quickly returns to its original position due to the rebound of the torsion spring 307 and the flexible strip 309. Furthermore, the arrangement of multiple movable rods 304 ensures that during the interception process, the interceptor 102 can adjust the movement of the mine car based on factors such as its speed and mass. At least one side of the movable rod 304 is pushed and offset. When the interceptor 102 intercepts the mine car and stops it, the elastic buffer rope rebounds and drives the interceptor 102 to rebound. During this process, the interceptor 102 simultaneously drives the fixed rod 306 to move back to its original position. At this time, the end of the fixed rod 306 near the protective frame 302 hooks with the end of the movable rod 304 near the fixed rod 306. Under the limit of the limit rod 305, when the movable rod 304 is subjected to the tension of the fixed rod 306 when it is reset, it is limited. By limiting the fixed rod 306, the fixed rod 306 and the interceptor 102 no longer rebound and reset.

[0038] Furthermore, through the setting of the protective mechanism 300, when the interceptor frame 102 intercepts a stalled mine car, when the mine car impacts the interceptor frame 102 and the elastic buffer rope is under great tension, the cooperation of the fixed rod 306, the movable rod 304 and the limiting rod 305 can effectively prevent the elastic buffer rope from causing secondary movement of the already stopped mine car. This effectively avoids the problem of secondary collision or structural damage to the mine car caused by the rebound, and improves the reliability and safety of the mine car stall protection device when intercepting a stalled mine car.

[0039] Furthermore, the protective mechanism 300, when the interceptor 102 moves the fixed rod 306 towards the protective mechanism 302 during the interception of the mine car, the movable rod 304, torsion spring 307, and flexible strip 309 can provide a certain degree of blocking and buffering effect on the rapidly moving interceptor 102. This absorbs some of the impact force, thereby reducing the distance the interceptor 102 moves when intercepting a stalled mine car. It also reduces the stretching length of the elastic buffer rope, effectively preventing excessive stretching of the elastic buffer rope and ensuring the service life of the mine car stall protection device.

[0040] The following describes the working principle and beneficial effects of the guide mechanism 400: Furthermore, when the mine car impacts the interceptor frame 102 and causes it to move towards the support plate 301, the guide post 401 and the limiting groove 402 simultaneously... Figure 6 As shown, one end of the guide post 401 and the limiting groove 402 can be inserted into the slide groove 403 and slide in the slide groove 403. With the setting of the flexible block 404, when the guide post 401 slides, the flexible block 404 can also have a certain blocking and buffering effect on the impact force when the mine car stalls, further avoiding the reduction of the moving distance of the interceptor frame 102 when intercepting the stalled mine car and the excessive stretching of the elastic buffer rope.

[0041] Meanwhile, through the setting of the guide mechanism 400, after the interceptor 102 is separated from the guide rod 101, the guide post 401 is limited by the slide groove 403. With the guidance of the guide post 401, the limiting groove 402 and the slide groove 403, the direction of movement of the interceptor 102 during interception is always in a regular and controllable state. This makes the direction of movement of the stalled mine car controllable, avoids the stalled mine car from derailing due to the uncontrollable direction of movement of the interceptor 102 during interception, and improves the controllability of the direction of movement of the mine car during interception.

[0042] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A mine car stall protection device for inclined shafts, comprising a mounting frame (100) and two mounting base plates (200), wherein a guide rod (101) is provided at the bottom of the mounting frame (100), and an interceptor frame (102) is installed at the bottom of the guide rod (101), characterized in that: It also includes a protective mechanism (300) for limiting the interceptor (102) when it intercepts a stalled mine car; The protective mechanism (300) also includes two sets of support plates (301), symmetrically arranged on both sides of the interceptor frame (102). The support plates (301) are fixedly connected to the adjacent mounting base plate (200). A protective frame (302) is fixedly connected to the support plates (301). Multiple U-shaped support rods (303) are fixedly connected to the protective frame (302). A movable rod (304) is rotatably connected to the side of the U-shaped support rod (303) away from the protective frame (302). A torsion spring (307) is fixedly connected between the movable rod (304) and the U-shaped support rod (303). Two fixed rods (306) are fixedly connected to the interceptor frame (102). When the mine car stalls, the fixed rod (306) moves simultaneously with the interceptor (102). When the fixed rod (306) slides towards the movable rod (304), it pushes the movable rod (304) to rotate. After sliding and rebounding with the interceptor (102), any one of the movable rods (304) can limit the fixed rod (306).

2. The mine car stall protection device for inclined shafts according to claim 1, characterized in that: The protective mechanism (300) includes multiple limiting rods (305), each of which is fixedly connected to the side of the protective frame (302) near the movable rod (304). The limiting rod (305) is in contact with the adjacent movable rod (304) and is used to limit the rotation of the movable rod (304).

3. The mine car stall protection device for inclined shafts according to claim 1, characterized in that: Each of the movable rods (304) and each of the fixed rods (306) is configured as an L-shape, and at least two toothed blocks (308) are fixedly connected to each of the movable rods (304) and the fixed rods (306). When the movable rod (304) limits the fixed rod (306), the toothed blocks (308) on the movable rod (304) and the toothed blocks (308) on the fixed rod (306) can mesh with each other.

4. The mine car stall protection device for inclined shafts according to claim 1, characterized in that: The movable rod (304) is inclined on the protective frame (302), and the fixed rod (306) is inclined on the interceptor frame (102).

5. A mine car stall protection device for inclined shafts according to claim 1, characterized in that: The protective frame (302) has multiple flexible strips (309) fixedly connected to the side near the movable rod (304), and each flexible strip (309) is in contact with the adjacent movable rod (304).

6. A mine car stall protection device for inclined shafts according to claim 5, characterized in that: The flexible strip (309) is configured to be arc-shaped.

7. A mine car stall protection device for inclined shafts according to claim 6, characterized in that: The flexible strip (309) is made of rubber.

8. A mine car stall protection device for inclined shafts according to claim 1, characterized in that: It also includes a guiding mechanism (400) for guiding the interceptor (102) when it intercepts the stalled mine car. The guiding mechanism (400) includes two guide posts (401), which are fixedly connected to both sides of the interceptor (102). Two limiting grooves (402) are opened on the guide posts (401). A sliding groove (403) is opened on the support plate (301). Two sets of flexible blocks (404) are fixedly connected to the top of the support plate (301).

9. A mine car stall protection device for inclined shafts according to claim 8, characterized in that: Two sets of flexible blocks (404) are symmetrically arranged on the top of the support plate (301), and each set of flexible blocks (404) has multiple blocks.

10. A mine car stall protection device for inclined shafts according to claim 9, characterized in that: The adjacent flexible blocks (404) are configured with arc-shaped opposite sides.

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