A mine car anti-runaway device

Abstract

The utility model relates to the field of mining equipment, concretely relates to a mine car anti -running device, including bottom plate and movable frame, the movable frame is installed with the door type frame that lifts by power device drive, is installed with the buffer baffle on the door type frame, is fixedly installed with the slide rail on the bottom plate, the slide rail is parallel to the moving direction of mine car, is fixedly installed with the slide seat that is matched with the slide rail on the movable frame, is fixedly installed with the support on the bottom plate of slide rail side, is fixedly installed with the friction piece on the support, one side swing installation of slide seat has the mounting plate, the side fixed mounting of mounting plate is close to the friction piece has the brake block, is connected with the support spring of the brake block that sticks on the friction piece between slide seat and mounting plate, when the mine car hits the buffer baffle, on one hand, through the buffer spring to the mine car provides the buffer effect, slows down the impact force of mine car and hits the buffer baffle, on the other hand, the brake block and the friction piece between friction produce the braking force, and the kinetic energy of mine car is converted into heat energy.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment, specifically to a device for preventing mine cars from running away. Background Technology

[0002] Runaway mine cars in inclined shafts pose a significant safety hazard in mining operations. They primarily refer to accidents where, during the hoisting or lowering of mine cars in an inclined shaft, due to factors such as broken hoisting cables, malfunctioning car connection devices, or operational errors, the car loses control and plunges at high speed down the inclined shaft track. These accidents can not only damage the mine cars and track equipment but also cause casualties and production disruptions.

[0003] Existing runaway protection devices, such as the utility model patent with application number CN202223479043.1, disclose a runaway protection device for underground inclined shafts. This device uses a buffer plate and buffer springs inside a gantry frame to cushion the mine car. When the mine car impacts the buffer plate, the plate changes from an inclined state to a vertical state, compressing the buffer spring to absorb the impact force. While this design provides some cushioning, the cushioning mechanism is simplistic, relying solely on springs for buffering, resulting in limited energy absorption. In high-speed runaway scenarios, the springs are prone to overload and failure, causing the impact force to be directly transmitted to the mine car and the device, increasing the risk of damage. Utility Model Content

[0004] The purpose of this invention is to provide a mine car anti-runaway device that uses a buffer spring in conjunction with friction braking to smoothly stop the mine car, thereby solving the defects mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A mine car runaway prevention device includes a base plate and a movable frame. A gantry frame driven by a power unit is mounted on the movable frame, and a buffer baffle is mounted on the gantry frame. A slide rail is fixedly mounted on the base plate, parallel to the direction of movement of the mine car. A slide block matching the slide rail is fixedly mounted on the movable frame. A bracket is fixedly mounted on the base plate located to the side of the slide rail, and a friction plate is fixedly mounted on the bracket. An mounting plate is movably mounted on one side of the slide block, and a brake block is fixedly mounted on the side of the mounting plate near the friction plate. A support spring connects the slide block and the mounting plate, causing the brake block to conform to the friction plate.

[0006] As a further improvement, the distance between the friction plate and the slide rail gradually decreases along the direction of movement of the mine car.

[0007] As a further improvement, a telescopic rod is provided between the slide block and the mounting plate. The telescopic rod extends horizontally in a direction perpendicular to the slide rail, and the two ends of the telescopic rod are respectively fixedly connected to the slide block and the mounting plate.

[0008] As a further improvement, the movable frame is a metal movable frame, and a column is fixedly installed on the base plate, and a magnet for attracting the movable frame is fixedly installed on the column.

[0009] As a further improvement, a fixed baffle is provided on the downstream side of the gantry frame along the direction of movement of the mine car. A sliding rod is fixedly installed between the fixed baffle and the gantry frame. The sliding rod is arranged parallel to the slide rail. A buffer baffle is slidably installed on the sliding rod. A buffer spring is connected between the buffer baffle and the fixed baffle.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. When the mine car hits the buffer baffle, the buffer spring first absorbs part of the kinetic energy by compression, reducing the direct impact force; at the same time, the movable frame slides along the slide rail, driving the brake block and friction pad to generate friction braking force, converting the remaining kinetic energy into heat energy, and achieving a smooth stop. The dual mechanism works together to avoid the inadequacy of single buffer and improve the protection of the mine car and equipment. 2. As the distance between the friction plate and the slide rail gradually decreases along the direction of the mine car's movement, the friction between the brake block and the friction plate increases linearly as the movable frame slides, ensuring a smooth transition of braking force and preventing rebound or rollover caused by sudden stopping of the mine car. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model; Figure 2 This is a structural schematic diagram of the back of the portal frame according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the slide block according to an embodiment of the present invention; Figure 4 This is a top view of the base plate of an embodiment of the present utility model.

[0013] In the diagram: 1-Base plate; 2-Movable frame; 3-Upright beam; 4-Crossbeam; 5-Gantry frame; 6-Buffer baffle; 7-Slide groove; 8-Slider; 9-Motor; 10-Lead screw; 11-Fixed baffle; 12-Slide rod; 13-Buffer spring; 14-Slide rail; 15-Slide seat; 16-Bracket; 17-Friction pad; 18-Mounting plate; 19-Brake block; 20-Support spring; 21-Column; 22-Magnet; 23-Limit block; 24-Telescopic rod; 25-Guide column. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figures 1 to 4 As shown, a mine car anti-runaway device includes a base plate 1 and a movable frame 2. The movable frame 2 is provided with two vertical beams 3 arranged opposite each other on the left and right. A crossbeam 4 is fixedly installed on the upper end of the two vertical beams 3. A base plate 1 is respectively provided at the lower end of the two vertical beams 3, and the track for carrying the mine car passes through the space between the two base plates 1.

[0016] A portal frame 5, driven by a power unit, is installed on the movable frame 2. A buffer baffle 6 is installed on the portal frame 5. Vertically extending grooves 7 are provided on the inner sides of the two upright beams 3. Sliding blocks 8 are fixed to the left and right sides of the portal frame 5 by bolts, and the sliding blocks 8 are slidably installed in the grooves 7. Specifically, in the non-working state, the portal frame 5 slides upward along the grooves 7, raising the buffer baffle 6 above the top of the mine car, allowing the mine car to pass smoothly through the portal frame 5; or in the working state, the portal frame 5 slides downward along the grooves 7, lowering the buffer baffle 6 into the path of the mine car, blocking the mine car from passing through the portal frame 5 and preventing runaway accidents.

[0017] In addition, a vertically extending guide post 25 is fixedly installed in the right slide groove 7, and the right slider 8 is slidably sleeved on the guide post 25 to improve the stability of the lifting and lowering of the gantry frame 5; the left slide groove 7 is provided with a lead screw 10 driven by a motor 9. The motor 9 is installed on the top of the movable frame 2 by bolts. The upper end of the lead screw 10 is connected to the motor 9 through a coupling, and the lower end is connected to the inner wall of the corresponding slide groove 7 through a bearing. The left slider 8 is threadedly connected to the lead screw 10, and the gantry frame 5 is driven to lift and lower by the rotation of the lead screw 10.

[0018] A fixed baffle 11 is provided on the downstream side of the gantry frame 5 along the direction of movement of the mine car. In this embodiment, as shown... Figure 2As shown, multiple fixed baffles 11 are vertically and evenly distributed at intervals on the rear side of the portal frame 5. Slide rods 12 are fixedly installed between the left and right ends of the fixed baffles 11 and the corresponding vertical arms of the portal frame 5. The slide rods 12 extend back and forth parallel to the direction of movement of the mine car. Buffer baffles 6 are slidably installed on the multiple slide rods 12. Buffer springs 13 are sleeved on the slide rods 12 located between the buffer baffles 6 and the fixed baffles 11. When the mine car hits the buffer baffles 6, the buffer springs 13 provide a buffering effect to reduce the impact force of the mine car hitting the buffer baffles 6.

[0019] like Figure 3 As shown, a slide rail 14 is bolted to the top of the base plate 1. The slide rail 14 extends back and forth parallel to the direction of movement of the mine car. The lower ends of the two vertical beams 3 of the movable frame 2 are bolted to the slide seats 15. The slide seats 15 are slidably mounted on the corresponding slide rails 14. A bracket 16 is bolted to the base plate located outside the slide rail 14. A friction plate 17 is bolted to the side of the bracket 16 near the slide rail 14. An mounting plate 18 is movably mounted on the side of the slide seat 15 near the friction plate 17. A brake block 19 is bolted to the side of the mounting plate 18 near the friction plate 17. A support spring 20 connects the slide seat 15 and the mounting plate 18 to make the brake block 19 fit against the friction plate 17.

[0020] When the mine car hits the buffer baffle 6, on the one hand, the buffer spring 13 provides a buffering effect on the mine car, reducing the impact force of the mine car hitting the buffer baffle 6; on the other hand, the buffer baffle 6 is impacted by the mine car and drives the movable frame 2 to slide along the slide rail 14, and then the slide block 15 drives the brake block 19 to generate braking force through friction between the brake block 19 and the friction plate 17, converting the kinetic energy of the mine car into heat energy, thereby bringing the mine car to a smooth stop.

[0021] like Figure 4 As shown, the distance between the friction plate 17 and the slide rail 14 gradually decreases from front to back along the direction of movement of the mine car, thereby making the friction between the brake block 19 and the friction plate 17 increase linearly and continuously improving the braking effect on the mine car.

[0022] In this embodiment, a telescopic rod 24 is provided between the slide block 15 and the mounting plate 18. The telescopic rod 24 extends laterally in a direction perpendicular to the slide rail 14. The two ends of the telescopic rod 24 are respectively fixedly connected to the slide block 15 and the mounting plate 18 by bolts. The support spring 20 is sleeved on the outside of the telescopic rod 24, and the telescopic rod 24 provides support and guidance for the mounting plate 18.

[0023] In this embodiment, the movable frame 2 is a metal movable frame. A column 21 is bolted to the base plate 1 at the front end of the slide rail 14. A magnet 22 for attracting the upright beam 3 of the movable frame 2 is fixedly installed on the column 21. The movable frame 2 is attracted by the magnet 22, and when the buffer baffle 6 is not impacted by the mine car, the movable frame 2 is kept in its initial working position. In addition, a limit block 23 is bolted to the rear end of the slide rail 14 to prevent the slide block 15 from completely falling off the rear end of the slide rail 14.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mine car anti-runaway device, characterized in that: The system includes a base plate and a movable frame. A gantry frame, driven by a power unit, is mounted on the movable frame, and a buffer baffle is installed on the gantry frame. A slide rail is fixedly mounted on the base plate, parallel to the direction of movement of the mine car. A slide block matching the slide rail is fixedly mounted on the movable frame. A bracket is fixedly mounted on the base plate located to the side of the slide rail, and a friction plate is fixedly mounted on the bracket. A mounting plate is movably mounted on one side of the slide block, and a brake block is fixedly mounted on the side of the mounting plate near the friction plate. A support spring connects the slide block and the mounting plate, causing the brake block to conform to the friction plate.

2. The mine car anti-runaway device as described in claim 1, characterized in that: The distance between the friction plate and the slide rail gradually decreases along the direction of movement of the mine car.

3. The mine car runaway prevention device as described in claim 1, characterized in that: A telescopic rod is provided between the slide block and the mounting plate. The telescopic rod extends horizontally in a direction perpendicular to the slide rail, and the two ends of the telescopic rod are respectively fixedly connected to the slide block and the mounting plate.

4. The mine car anti-runaway device as described in claim 1, characterized in that: The movable frame is a metal movable frame, and a column is fixedly installed on the base plate. A magnet for attracting the movable frame is fixedly installed on the column.

5. The mine car runaway prevention device as described in claim 1, characterized in that: A fixed baffle is provided on the downstream side of the gantry frame along the direction of movement of the mine car. A sliding rod is fixedly installed between the fixed baffle and the gantry frame. The sliding rod is arranged parallel to the slide rail. A buffer baffle is slidably installed on the sliding rod. A buffer spring is connected between the buffer baffle and the fixed baffle.

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