A safety uncoupling device for mine cars in underground mines
By designing a safety unhooking device with a guide plate limit and an eccentric block self-locking structure on the mine car in the mine, the problems of complex structure and low safety of traditional mine car unhooking devices have been solved, realizing fast and reliable unhooking operation, improving the safety of mine car transportation and the service life of wire ropes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINCHUAN GROUP CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-06-16
AI Technical Summary
Traditional mine car unhooking devices are complex in structure, inconvenient to operate, and have low safety. They are prone to failure due to human error or mechanical malfunction, and cannot achieve real-time unhooking.
A safety unhooking device was designed, comprising a track, guide plate, pin, wire rope, and lifting mechanism. Through the guide plate limiting and the eccentric block self-locking structure, the pin is ensured to move smoothly and be mechanically self-locked, achieving fast and reliable unhooking operation.
It improves the accuracy and safety of mine car unhooking operations, reduces wear, extends the service life of wire ropes, and prevents pins from accidentally falling off due to vibration or bumps, thus ensuring the safety and reliability of mine car transportation.
Smart Images
Figure CN224361167U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mining car equipment technology, and in particular to a safety unhooking device for underground mining cars. Background Technology
[0002] In the mining process, mine transportation is a crucial link in the production process, and mine car uncoupling is a key step. Currently, many mines in China require frequent hooking and uncoupling operations for underground mine cars, all of which require manual intervention. Traditional uncoupling devices suffer from problems such as complex structure, inconvenient operation, and low safety. They are prone to failure due to human error or mechanical malfunction, leading to safety accidents. Furthermore, they cannot achieve real-time uncoupling as needed. Therefore, there is an urgent need for a simple and highly reliable safety uncoupling device for underground mine cars. Utility Model Content
[0003] To address the aforementioned technical problems, this utility model provides a safety unhooking device for underground mine cars, which solves the problems of traditional unhooking devices having complex structures and being unable to unhook at all times.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows:
[0005] A safety unhooking device for underground mine cars includes a track on which a mine car is slidably mounted. A support structure is mounted on the top of the mine car. A first guide plate and a second guide plate are sequentially mounted on the lower outer side of the mine car body. A radially movable pin is inserted into the first guide plate and the second guide plate. A lifting mechanism is provided on the support structure. The lifting mechanism includes a wire rope, the lower end of which is slidably attached to the support structure, and the upper end of which is connected to the top of the pin. The device also includes a hook, which is movably sleeved on the pin between the first guide plate and the second guide plate.
[0006] As a further improvement of this utility model, the support structure includes columns, four of which are installed at the bottom of the four columns at the four corners of the top of the mine car. A rectangular steel frame is installed on the top of the columns, and the pull-down end of the wire rope is slidably connected to the rectangular steel frame.
[0007] As a further improvement of this utility model, a first movable pulley and a second movable pulley are rotatably installed on the two short sides of the rectangular steel frame in sequence, and the upper end of the wire rope slides past the first movable pulley and the second movable pulley in sequence before being connected to the top of the pin.
[0008] As a further improvement of this utility model, a guide mechanism is installed on the upper part of the first guide plate on the outer side of the mine car body. A lifting frame that can slide radially is installed on the guide mechanism. The top of the lifting frame is connected to the upper end of the wire rope, and a lifting rope is connected to the bottom of the lifting frame. The free end of the lifting rope is connected to the top surface of the pin.
[0009] As a further improvement of this utility model, a sliding guide block is installed on the lower part of the second movable pulley, and a hook remover is slidably installed on the side of the sliding guide block. The bottom of the hook remover is provided with a hook and hooked to the top of the lifting frame. The upper end of the wire rope is connected to the top of the hook remover.
[0010] As a further improvement of this utility model, a limiting plate is installed between the first guide plate and the lifting frame. The limiting plate has a hole, and the top end of the lifting rope passes through the hole of the limiting plate and is connected to the bottom of the lifting frame.
[0011] As a further improvement of this utility model, an eccentric block is hinged to the lower end of the pin, and a through hole is opened on the axis of the pin. The bottom end of the lifting rope passes through the through hole and is connected to one of the top corners of the eccentric block.
[0012] As a further improvement of this utility model, a lifting ring is installed at the pull-down end of the wire rope.
[0013] As a further improvement of this utility model, the first movable pulley and the second movable pulley are symmetrically installed on the short side of the rectangular frame.
[0014] The beneficial effects of this utility model are as follows:
[0015] 1. The first and second guide plates on the outer side of the mine car body form the moving track of the pin. The bidirectional limit ensures that the pin can move smoothly in a straight line in the radial direction when it is pulled. The wire rope can directly transmit the pulling force required for unhooking to the pin. Its pull end is slidably connected to the support structure of the car body. Workers can unhook the pin at any time by pulling the pull end of the wire rope. The hook is sleeved on the pin and is located between the two guide plates. It is in close cooperation with the pin. During normal operation, it can stably transmit traction force and can also avoid easy up and down movement with the help of the limit effect of the guide plates.
[0016] 2. The support structure consists of four columns, which are installed at the four corners of the mine car top. A rectangular steel frame is installed on the top, and the lower end of the wire rope slides onto the steel frame. The four columns support the rectangular steel frame from the four corners, so that the wire rope can move in the vertical direction when the mine car needs to be unhooked and pulled down. The rectangular steel frame improves the stability of the wire rope during the lifting process.
[0017] 3. The first and second movable pulleys, which are symmetrically installed on the two short sides of the rectangular steel frame, make it easier for the operator to pull the wire rope. At the same time, it reduces the wear and tear on the wire rope caused by the direct contact with the rectangular steel frame, extends the service life of the wire rope, and makes the lifting process of the pin more stable.
[0018] 4. The guide mechanism on the vehicle body provides direction for the radial sliding of the lifting frame, ensuring that the lifting frame can only move along the direction of the guide mechanism, avoiding the problem of lifting force deviation. The tension of the wire rope can be directly transmitted to the pin through the lifting frame and the lifting rope, making the movement direction of the pin more precise and improving the accuracy of the unhooking operation.
[0019] 5. The added hooking structure of the unhooking device makes the connection between the hoisting frame and the unhooking device more flexible and diverse. For example, when the mine car is not running, the hook under the unhooking device can be manually separated from the hoisting frame to avoid the lower pin separating from the guide plate due to human error. At the same time, it can also improve the stability of the unhooking process when lifting.
[0020] 6. The limiting plate limits the lifting rope, preventing it from detaching from the first guide plate due to excessive pulling during the pulling process.
[0021] 7. An eccentric block is added to the lower end of the connecting pin. By utilizing its bias characteristics in the free state, a mechanical self-locking structure is formed, which effectively prevents the pin from accidentally falling off due to vibration or bumps during the operation of the mine car, and significantly improves the safety of operation. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of this utility model;
[0023] Figure 2 This is a schematic diagram of the eccentric block and pin structure of this utility model.
[0024] In the diagram, 1. Support structure; 11. Column; 12. Rectangular steel frame; 2. Mine car; 3. Lifting mechanism; 31. First movable pulley; 32. Second movable pulley; 33. Lifting ring; 34. Steel wire rope; 35. Sliding guide block; 36. Unhooking device; 4. Lifting mechanism; 41. Lifting frame; 42. Guide mechanism; 43. Limiting plate; 44. Lifting rope; 45. First guide plate; 46. Pin; 47. Second guide plate; 48. Eccentric block; 5. Track; 6. Coupler. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0026] like Figure 1-2As shown, a safety unhooking device for underground mine cars includes a track 5, on which a mine car 2 is slidably mounted. A support structure 1 is mounted on the top of the mine car 2. A first guide plate 45 and a second guide plate 47 are fixedly mounted on the lower outer side of the mine car 2. A radially movable pin 46 is inserted into the first guide plate 45 and the second guide plate 47. A lifting mechanism 3 is provided on the support structure 1. The lifting mechanism 3 includes a wire rope 34, the lower end of which is slidably connected to the support structure 1, and the upper end of which is connected to the top of the pin 46. The device also includes a hook 6, which is movably sleeved on the pin 46 between the first guide plate 45 and the second guide plate 47. The first guide plate 45 and the second guide plate 47 on the outer side of the mine car 2 form the moving track of the pin 46. The bidirectional limit ensures that the pin 46 can move smoothly in a straight line in the radial direction when it is pulled. The wire rope 34 can directly transmit the pulling force required for unhooking to the pin 46. Its pull-down end slides on the support structure 1 set on the car body, which can flexibly respond to the operation requirements to achieve timely unhooking. The hook 6 is sleeved on the pin 46 and is located between the first guide plate 45 and the second guide plate 47. It is in close cooperation with the pin 46. During normal operation, it can stably transmit traction force and avoid up and down movement with the help of the limiting effect of the first guide plate 45 and the second guide plate 47.
[0027] The support structure 1 includes four columns 11. The bottom of the four columns 11 is installed at the four corners of the top of the mine car 2. A rectangular steel frame 12 is installed on the top of the columns 11. The pull-down end of the wire rope 34 is slidably connected to the rectangular steel frame 12, which allows the wire rope 34 to move in the vertical direction when the entire mine car 2 needs to be unhooked and pulled down, thus improving the efficiency of the lifting force transmission during the lifting process of the wire rope 34.
[0028] A first movable pulley 31 and a second movable pulley 32 are rotatably installed on the two short sides of the rectangular steel frame 12. The upper end of the wire rope 34 slides past the first movable pulley 31 and the second movable pulley 32 in sequence and then connects to the top of the pin 46. The pulleys make it easier for the operator to pull the wire rope 34, while reducing the wear caused by the wire rope 34 directly lapping on the rectangular steel frame 12, extending the service life of the wire rope 34, and making the lifting process of the pin 46 more stable.
[0029] Two sets of four guide mechanisms 42 are installed on the upper part of the first guide plate 45 on the outer side of the mine car 2. A radially sliding lifting frame 41 is installed on the guide mechanism 42. The top of the lifting frame 41 is connected to the upper end of the wire rope 34, and the bottom of the lifting frame 41 is connected to the lifting rope 44. The free end of the lifting rope 44 is connected to the top surface of the pin 46. The guide mechanism 42 on the mine car 2 provides directional guidance for the radial sliding of the lifting frame 41, ensuring that the lifting frame 41 can only move in the direction set by the guide mechanism 42, and avoiding the problem of lifting force deviation. The tension of the wire rope 34 is directly transmitted to the pin 46 through the lifting frame 41 and the lifting rope 44, making the movement direction of the pin 46 more accurate.
[0030] A sliding guide block 35 is installed at the lower part of the second movable pulley 32. A hook remover 36 is slidably installed on the side of the sliding guide block 35. A hook is provided at the bottom of the hook remover 36 and hooks to the top of the lifting frame 41. The upper end of the wire rope 34 is connected to the top of the hook remover 36. The added hooking structure of the hook remover 36 makes the connection between the lifting frame 41 and the hook remover 36 more flexible and diverse. For example, when the mine car 2 is not running, the hook under the hook remover 36 can be manually separated from the lifting frame 41 to avoid the pin 46 separating from the guide plate due to human error. At the same time, it can also improve the stability of the unhooking process during lifting.
[0031] A limiting plate 43 is installed between the first guide plate 45 and the lifting frame 41. The limiting plate 43 has a hole. The top end of the lifting rope 44 passes through the hole of the limiting plate 43 and is connected to the bottom of the lifting frame 41. The limiting plate 43 limits the lifting rope 44 and prevents the pin 46 from coming out of the first guide plate 45 due to excessive pulling during the pulling process.
[0032] An eccentric block 48 is hinged to the lower end of the pin 46. A through hole is provided on the axis of the pin 46. The bottom end of the lifting rope 44 passes through the through hole and is connected to one of the top corners of the eccentric block 48. By utilizing the bias characteristics of the eccentric block 48 in its free state, a mechanical self-locking structure is formed, which effectively prevents the pin 46 from accidentally falling off due to vibration or bumps during the operation of the mine car 2, and significantly improves the safety of operation.
[0033] In use: During underground mine car transportation, when a disengagement operation is required, the operator can pull the lifting ring 33 at the lower end of the wire rope 34. At this time, the wire rope 34 slides along the first movable pulley 31 and the second movable pulley 32 on the rectangular steel frame 12, causing the hook unloader 36 connected to it to slide upward on the sliding guide block 35. The hook at the bottom of the hook unloader 36 hooks onto the top of the lifting frame 41, thereby pulling the lifting frame 41 radially upward along the guide mechanism 42. The lifting rope 44 connected to the bottom of the lifting frame 41 is pulled upward accordingly. The lifting rope 44 passes through the hole on the limiting plate 43, transmitting the pulling force to the pin 46. Under the action of the lifting rope 44, the pin 46 moves radially upward. During the lifting process, the eccentric block 48 at the lower end of the pin 46 forms a coaxiality with the pin 46. At this time, the entire pin 46 can be lifted upward. The presence of the limiting plate 43 prevents the pin 46 from being completely pulled out. As the pin 46 is gradually pulled out, the hook 6, which was originally sleeved on the pin 46, loses its constraint and separates from the pin 46, thus achieving the unhooking of the mine car 2. After the unhooking is completed, the lifting ring 33 is released. Under the action of the weight of the relevant components, the pin 46 is reset so that it can be reconnected later.
[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A safety uncoupling device for underground mine cars, comprising a track (5), on which a mine car (2) is slidably mounted, characterized in that: The mine car (2) is equipped with a support structure (1) on its top. The lower outer side of the mine car (2) is equipped with a first guide plate (45) and a second guide plate (47) in sequence. A radially movable pin (46) is inserted into the first guide plate (45) and the second guide plate (47). The support structure (1) is equipped with a lifting mechanism (3). The lifting mechanism (3) includes a wire rope (34). The lower end of the wire rope (34) is slidably connected to the support structure (1). The upper end of the wire rope (34) is connected to the top of the pin (46). The mechanism also includes a hook (6). The hook (6) is movably sleeved on the pin (46) between the first guide plate (45) and the second guide plate (47).
2. The safety uncoupling device for underground mine cars according to claim 1, characterized in that: The support structure (1) includes columns (11), four columns (11) are provided, the bottom of the four columns (11) are installed on the four corners of the top of the mine car (2), and a rectangular steel frame (12) is installed on the top of the columns (11). The pull-down end of the wire rope (34) is slidably connected to the rectangular steel frame (12).
3. A safety uncoupling device for underground mine cars according to claim 2, characterized in that: The rectangular steel frame (12) has a first movable pulley (31) and a second movable pulley (32) rotatably mounted on its two short sides. The upper end of the wire rope (34) slides past the first movable pulley (31) and the second movable pulley (32) in sequence and is connected to the top of the pin (46).
4. A safety uncoupling device for underground mine cars according to claim 3, characterized in that: The upper part of the first guide plate (45) on the outer side of the mine car (2) is equipped with a guide mechanism (42), and a radially sliding lifting frame (41) is installed on the guide mechanism (42). The top of the lifting frame (41) is connected to the upper end of the wire rope (34), and the bottom of the lifting frame (41) is connected to a lifting rope (44). The free end of the lifting rope (44) is connected to the top surface of the pin (46).
5. A safety uncoupling device for underground mine cars according to claim 4, characterized in that: The lower part of the second movable pulley (32) is equipped with a sliding guide block (35), and the side of the sliding guide block (35) is slidably equipped with a hook remover (36). The bottom of the hook remover (36) is provided with a hook and hooked to the top of the lifting frame (41). The upper end of the wire rope (34) is connected to the top of the hook remover (36).
6. A safety uncoupling device for underground mine cars according to claim 5, characterized in that: A limiting plate (43) is installed between the first guide plate (45) and the lifting frame (41). The limiting plate (43) has a hole, and the top end of the lifting rope (44) passes through the hole of the limiting plate (43) and is connected to the bottom of the lifting frame (41).
7. A safety uncoupling device for underground mine cars according to claim 6, characterized in that: An eccentric block (48) is hinged to the lower end of the pin (46). A through hole is provided on the axis of the pin (46). The bottom end of the lifting rope (44) passes through the through hole and is connected to one of the top corners of the eccentric block (48).
8. A safety uncoupling device for underground mine cars according to claim 7, characterized in that: The pull-down end of the wire rope (34) is equipped with a lifting ring (33).
9. A safety uncoupling device for underground mine cars according to claim 7, characterized in that: The first movable pulley (31) and the second movable pulley (32) are symmetrically installed on the short side of the rectangular frame.