Coal mine car braking device and method

Abstract

The invention provides a coal mine car braking device and method.The coal mine car braking device comprises a connecting device, a sliding block assembly, a connecting part and an elastic driving part, and when the elastic driving part deforms, a second sliding block is driven to move along a second sliding way. Through the elastic driving part, when the winch pulls the mine car, the first sliding block and the second sliding block are separated from the mine car running track, when the steel wire rope is broken, the elastic driving part pushes the second sliding block to move, then the first sliding block is driven to move, the first sliding block and the second sliding block tightly press the mine car running track, and therefore the mine car speed reduction effect is achieved; the problems that in the coal mine inclined drift winch traction mine car transportation scene, mine car blocking measures are delayed in response, insufficient in braking efficiency and prone to losing efficacy of passive protection are solved.

Description

Technical Field

[0001] The present application relates to the technical field of auxiliary transportation in underground coal mines, and in particular to a braking device and method for a coal mine vehicle. Background Art

[0002] In underground coal mines, the use of winches in inclined tunnels to pull mine carts is a critical step in ensuring the turnover of coal mining materials and the transportation of personnel. However, the operating environment of these winches is complex and presents significant safety risks. Accidents involving the sudden breakage of winch wire ropes, leading to uncontrolled descent of mine carts, are common. These accidents can easily lead to collisions, falls, and other serious consequences, seriously threatening the lives of underground miners, damaging equipment, and disrupting production, resulting in significant losses for coal mining companies.

[0003] To address the above risks, measures to block mine cars are implemented, such as barriers, wheel brakes, and normally closed anti-runaway devices. However, these technical solutions have significant limitations. For example, traditional barriers rely on manual operation or preset position triggering, and are unable to respond to emergencies such as wire rope breakage in real time, resulting in a response lag. Wheel brakes are affected by the low friction coefficient of the track in inclined tunnels, making it difficult to achieve effective braking in a short period of time, resulting in excessive braking distances. Normally closed anti-runaway devices are rigid blocking structures that are limited by the impact force they can withstand and are prone to failure due to overload when the mine car is sliding down at high speed, making it impossible to reliably curb the risk of loss of control. Summary of the Invention

[0004] The embodiments of the present application provide a coal mine car braking device and method to solve the problems of delayed response, insufficient braking efficiency, and easy failure of passive protection in the mine car blocking measures in the coal mine inclined lane winch traction mine car transportation scenario.

[0005] In a first aspect, the present application provides a coal mine car brake device, comprising:

[0006] A connecting device is provided, the connecting device being arranged across the mine car running track; the connecting device is provided with a first slide and a second slide; the first slide is arranged at an inclination, and the second slide is arranged at an inclination;

[0007] Slider assembly; the slider assembly includes a first slider and a second slider, the first slider is arranged in the first slideway, the second slider is arranged in the second slideway, the two ends of the first slider are respectively arranged in the grooves on both sides of the mine car running track, and the two ends of the second slideway are respectively arranged in the grooves on both sides of the mine car running track; the first slider and the second slider are connected by a fixing rod;

[0008] The connecting component includes a first connecting component and a second connecting component, wherein one end of the first connecting component is connected to the mining car, and the other end of the first connecting component is connected to the first slider; one end of the second connecting component is connected to the winch, and the other end of the second connecting component passes through the elastic driving component and is connected to the second slider;

[0009] When the elastic driving component is deformed, it drives the second sliding block to move along the second slideway.

[0010] Optionally, the first slider and the second slider are symmetrically inclined; both ends of the first slider and the second slider are provided with end surfaces adapted to contact the groove of the mine car running track.

[0011] Optionally, the end face includes a vertical section that fits against the side of the groove and a horizontal section that fits against the edge of the groove; when the first slider and the second slider hold the mine car running track, the horizontal section respectively abuts against the upper end face and the lower end face of the groove.

[0012] Optionally, the height of the first slide gradually increases along the direction away from the second slide to the direction close to the second slide, and the height of the second slide gradually increases along the direction away from the first slide to the direction close to the first slide. When the second slider slides downward along the second slide, the fixed rod drives the first slider to slide upward along the first slide; when the second slider slides upward along the second slide, the fixed rod drives the first slider to slide downward along the first slide.

[0013] Optionally, one end of the elastic driving component is abutted against the baffle on the inner side of the connecting device, and the baffle is vertically welded to the side wall of the connecting device. The other end of the elastic driving component is abutted against the pressure-bearing surface of the second slider, and the pressure-bearing surface is the plane of the second slider away from the first slider. When the winch pulls the connecting device, the elastic driving component is compressed between the baffle and the pressure-bearing surface, and the axial direction of the elastic driving component is consistent with the traveling direction of the mine car.

[0014] Optionally, the connecting device includes a connecting frame and a trapezoidal platform, the two ends of the connecting frame are respectively connected to the lower end of the trapezoidal platform, and the gap between the connecting frame and the trapezoidal platform is the first slide and the second slide; bearing seats are provided at the bottom of both sides of the connecting frame, and wheels are installed in the bearing seats, and the wheels are in contact with the running track of the mine car; the connecting frame and the trapezoidal platform are formed as one piece.

[0015] Optionally, the end surfaces of the first slider and the second slider in contact with the mine car running track are provided with transversely arranged anti-slip ribs, the cross-section of the anti-slip ribs is an isosceles triangle, the anti-slip ribs are integrally formed with the first slider, and the anti-slip ribs are integrally formed with the second slider, and anti-slip grooves are formed between adjacent anti-slip ribs.

[0016] Optionally, the first connecting member and the second connecting member each include connecting pieces arranged in parallel, the connecting pieces are rectangular, and a circular through hole is arranged in the middle of the connecting pieces;

[0017] The connecting piece of the first connecting component is connected to the lifting lug at the bottom of the mine car through a shackle, and the connecting piece of the second connecting component is connected to the rope clip of the winch wire rope through a shackle.

[0018] Optionally, it also includes a guide rod, which is arranged parallel to the inclination direction of the first slide and the second slide, and the two ends of the guide rod are respectively welded and fixed to the side walls of the connecting device; the first slider and the second slider are both provided with guide holes adapted to the guide rod, the guide rod passes through the guide hole and fits in the gap with the hole wall of the guide hole, and a wear-resistant bushing is provided in the guide hole.

[0019] In a second aspect, an embodiment of the present application provides a coal mine car braking method, which is applied to the coal mine car braking device described in the first aspect, comprising:

[0020] Connecting the coal mine car brake device to the mine car via a first connecting component;

[0021] Connecting the coal mine car brake device to the winch via a second connecting component;

[0022] During normal traction, the traction wire rope of the mine car is tensioned, and the elastic driving component is pulled by the hook component to store energy. The slider assembly maintains a gap with the mine car running track, and the mine car operates normally;

[0023] When the wire rope breaks, the elastic driving component releases the stored energy, driving the slider assembly to move along the first slide and the second slide, and the horizontal sections of the end surface respectively abut against the upper end surface and the lower end surface of the groove, and the friction between the slider assembly and the mine car running track is used to achieve mine car braking.

[0024] It can be seen from the above technical solution that the present application provides a coal mine car brake device and method, the coal mine car brake device comprising: a connecting device, the connecting device is arranged astride the mine car running track; the connecting device is provided with a first slide and a second slide; the first slide is arranged obliquely, and the second slide is arranged obliquely; a slider assembly; the slider assembly comprises a first slider and a second slider, the first slider is arranged in the first slide, and the second slide is arranged in the second slide, the two ends of the first slider are respectively arranged in the grooves on both sides of the mine car running track, and the two ends of the second slide are respectively arranged in the grooves on both sides of the mine car running track; the first slider and the second slider are connected by a fixed rod; a connecting component, comprising a first connecting component and a second connecting component, one end of the first connecting component is connected to the mine car, and the other end of the first connecting component is connected to the first slider; one end of the second connecting component is connected to the winch, and the other end of the second connecting component is connected to the second slider through an elastic driving component; when the elastic driving component is deformed, it drives the second slider to move along the second slide. Through the elastic driving component, when the winch pulls the mine car, the first slider and the second slider are separated from the mine car running track. When the wire rope breaks, the elastic driving component pushes the second slider to move, and then drives the first slider to move. The first slider and the second slider press the mine car running track, thereby achieving the effect of slowing down the mine car. This solves the problems of response lag, insufficient braking efficiency, and easy failure of passive protection in the mine car blocking measures in the coal mine inclined lane winch towing mine car transportation scenario. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 A structural diagram of a brake device for a coal mine car provided in an embodiment of the present application;

[0027] Figure 2 A front view of the coal mine car brake device provided in an embodiment of the present application.

[0028] Reference numerals:

[0029] Among them, 1-connecting device; 11-first slide; 12-second slide; 21-first slider; 22-second slider; 23-fixing rod; 31-first connecting component; 32-second connecting component; 4-elastic driving component; 13-end face; 14-connecting frame; 15-trapezoidal platform; 16-wheel; 33-connecting plate. DETAILED DESCRIPTION

[0030] The following embodiments are described in detail, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numbers in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following embodiments are not intended to represent all possible implementations consistent with the present application. They are merely examples of systems and methods consistent with certain aspects of the present application, as detailed in the claims.

[0031] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0032] In the specification and claims of this application and the accompanying drawings, the terms "first," "second," "third," etc. are used to distinguish similar or similar objects or entities, and are not necessarily intended to limit a particular order or sequence, unless otherwise noted. It should be understood that the terms used in this manner are interchangeable under appropriate circumstances.

[0033] In coal mining operations, winch-driven mine cars are a critical component of transportation. However, frequent accidents involving loss of control of mine cars due to wire rope breakage pose a serious threat to underground safety. Currently used stopping measures, such as barriers and wheel brakes, suffer from delayed response times and insufficient braking performance, making them ineffective in rapidly stopping mine cars in emergencies. Furthermore, most anti-runaway devices are passive, relying on pre-set triggering conditions and unable to proactively respond to emergencies such as wire rope breakage.

[0034] To solve the problems of delayed response, insufficient braking efficiency, and easy failure of passive protection in the mine car blocking measures in the mine car transportation scenario of winch pulling mine cars in inclined lanes of coal mines, see Figure 1 and Figure 2 , Figure 1 This is a structural diagram of a brake device for a coal mine car provided in an embodiment of the present application. The brake device for a coal mine car includes:

[0035] The connecting device 1 is arranged across the mine car running track; the connecting device 1 is provided with a first slide 11 and a second slide 12; the first slide 11 is arranged at an angle, and the second slide 12 is arranged at an angle;

[0036] The slider assembly includes a first slider 21 and a second slider 22. The first slider 21 is arranged in the first slide 11, and the second slider 22 is arranged in the second slide 12. The two ends of the first slider 21 are respectively arranged in the grooves on both sides of the mine car running track, and the two ends of the second slider 22 are respectively arranged in the grooves on both sides of the mine car running track; the first slider 21 and the second slider 22 are connected by a fixing rod 23;

[0037] The connecting component includes a first connecting component 31 and a second connecting component 32. One end of the first connecting component 31 is connected to the mining car, and the other end of the first connecting component 31 is connected to the first slider 21. One end of the second connecting component 32 is connected to the winch, and the other end of the second connecting component 32 passes through the elastic driving component 4 and is connected to the second slider 22.

[0038] When the elastic driving component 4 is deformed, it drives the second sliding block 22 to move along the second slideway 12 .

[0039] The connecting device 1 spans the track of the mine car, firmly supporting the slider assembly. A first slideway 11 and a second slideway 12 are provided on the connecting device 1. The first slideway 11 and the second slideway 12 are arranged at a certain angle to guide the movement of the first slider 21 and the second slider 22.

[0040] The slider assembly consists of a first slider 21 and a second slider 22, which are embedded in the first and second slideways 11 and 12, respectively. The ends of the first and second sliders 21 and 22 are positioned in grooves on either side of the mine car's running track. If the winch wire rope breaks, the ends of the first and second sliders 21 and 22 engage the grooves in the mine car's running track to achieve an automatic braking effect. A sturdy fixing rod 23 connects the first and second sliders 21 and 22, ensuring synchronization during movement.

[0041] Connecting components connect the brake system to the mine car and winch. One end of the first connecting component 31 is connected to the mine car, and the other end is connected to the first slider 21. One end of the second connecting component 32 is connected to the winch, and the other end is connected to the second slider 22 through the elastic drive component 4. The winch pulls the second connecting component 32, driving the second slider 22 to move. This, in turn, drives the first slider 21 synchronously via the fixed rod 23, separating the ends of the first and second sliders 21, 22 from the mine car track.

[0042] The elastic drive component 4 is elastically deformable. When the winch pulls the second connecting component 32, it deforms, storing energy. As the second slider 22 moves, the elastic drive component 4 gradually deforms, and the stored energy increases accordingly. When braking is required, the elastic drive component 4 releases the stored energy, pushing the second slider 22 to rapidly move along the second slideway 12. This, in turn, drives the first slider 21 synchronously via the fixed rod 23, achieving rapid braking of the mine car.

[0043] For example, in a coal mine lane, a mine car is slowly descending under the traction of a winch. When the wire rope connecting the winch to the brake device of the coal mine car breaks, the elastic driving component 4 deforms, pushing the second slider 22 to move rapidly along the second slideway 12. Because the first slider 21 and the second slider 22 are connected by the fixing rod 23, the ends of the first slider 21 and the second slider 22 abut against the grooves of the mine car running track, achieving an automatic braking effect.

[0044] In some embodiments, the first slider 21 and the second slider 22 are symmetrically inclined; both ends of the first slider 21 and the second slider 22 are provided with end surfaces that contact the grooves of the mine car track. This inclined configuration allows the first slider 21 and the second slider 22 to more stably contact the mine car track during movement, improving the stability and reliability of braking. Furthermore, the design of the end surfaces that contact the grooves of the mine car track ensures that the first slider 21 and the second slider 22 fit tightly in the grooves of the mine car track during braking, effectively preventing the mine car from moving further and achieving a braking effect.

[0045] In some embodiments, the end face 13 includes a vertical section that fits the side of the groove and a horizontal section that fits the edge of the groove; when the first slider 21 and the second slider 22 hold the mine car track, the horizontal sections respectively abut the upper and lower end faces of the groove.

[0046] The vertical section design enables the coal mine car brake device to quickly engage the side of the track groove in an emergency, providing stable support and preventing the mine car from sliding due to inertia. The horizontal section ensures that the brake device fully covers the upper and lower end surfaces of the groove when it grips the track, forming an effective brake blockade and further enhancing braking stability and safety. The arrangement of vertical and horizontal sections on end surface 13 not only improves braking efficiency but also reduces the risk of safety accidents caused by brake failure.

[0047] In some embodiments, the height of the first slide 11 gradually increases along the direction away from the second slide 12 to the direction close to the second slide 12, and the height of the second slide 12 gradually increases along the direction away from the first slide 11 to the direction close to the first slide 11; when the second slider 22 slides downward along the second slide 12, the fixed rod 23 drives the first slider 21 to slide upward along the first slide 11; when the second slider 22 slides upward along the second slide 12, the fixed rod 23 drives the first slider 21 to slide downward along the first slide 11.

[0048] Among them, through the design of the inclined slide, when the brake device needs to brake, the first slider 21 and the second slider 22 can move to the predetermined braking position in a relatively fast and stable manner. Specifically, when the second slider 22 slides downward along the second slide 12, due to the connection of the fixing rod 23, the first slider 21 will slide upward along the first slide 11 accordingly, thereby loosening the clamping of the mine car running track, allowing the mine car to continue moving forward. On the contrary, when braking is needed, the elastic driving component 4 is controlled to push the second slider 22 to slide upward along the second slide 12, and the first slider 21 slides downward along the first slide 11, forming a clamp-like clamping action, which effectively locks the brake device in the groove of the mine car running track. The inclined slide design not only improves the response speed and stability of the brake, but also makes the braking and releasing operations simpler and faster, thereby improving the efficiency and safety of the entire brake device.

[0049] In some embodiments, one end of the elastic driving component 4 is against the baffle on the inner side of the connecting device 1, and the baffle is vertically welded to the side wall of the connecting device 1. The other end of the elastic driving component 4 is against the pressure-bearing surface of the second slider 22. The pressure-bearing surface is the plane of the second slider 22 away from the first slider 21. When the winch is pulling, the elastic driving component 4 is compressed between the baffle and the pressure-bearing surface, and the axial direction of the elastic driving component 4 is consistent with the traveling direction of the mine car.

[0050] Among them, the baffle is vertically welded to the side wall of the connecting device 1, which enhances the stability of the structure. The other end of the elastic drive component 4 is against the pressure-bearing surface of the second slider 22. The pressure-bearing surface is the plane of the second slider 22 away from the first slider 21, ensuring the effective transmission of force. When the winch pulls the mine car forward, the elastic drive component 4 is compressed between the baffle and the pressure-bearing surface, storing elastic potential energy. When the mine car is operating normally, the elastic drive component 4 is in a compressed state. Once braking is required, the released compression force can quickly push the second slider 22 to slide upward along the second slide 12. Through the connection of the fixing rod 23, the first slider 21 slides downward along the first slide 11, realizing a clamp-like clamping action, effectively locking the brake device in the groove of the mine car running track, thereby achieving fast and stable braking.

[0051] Secondly, since the axial direction of the elastic driving component 4 is consistent with the traveling direction of the mining car, during the braking process, the elastic driving component 4 can quickly and accurately transmit the force to the second slider 22, avoiding the deviation or loss of force, thereby improving the response speed and stability of the brake.

[0052] In addition, by abutting one end of the elastic driving component 4 against the baffle on the inner side of the connecting device 1 and the other end against the pressure-bearing surface of the second slider 22, stable force transmission is achieved without the need for additional transmission mechanisms or complex connecting components, thereby simplifying the structure of the brake device and reducing manufacturing costs.

[0053] In some embodiments, the connecting device 1 includes a connecting frame 14 and a trapezoidal platform 15. The two ends of the connecting frame 14 are respectively connected to the lower end of the trapezoidal platform 15. The gap between the connecting frame 14 and the trapezoidal platform 15 is the first slide 11 and the second slide 12; bearing seats are provided at the bottom of both sides of the connecting frame 14, and wheels 16 are installed in the bearing seats, and the wheels 16 are in contact with the running track of the mine car; the connecting frame 14 and the trapezoidal platform 15 are formed as one piece.

[0054] The one-piece design not only enhances the overall structural strength of the connecting device 1, but also ensures the stability and accuracy of the first slide 11 and the second slide 12. The wheel 16 is mounted on the bottom of the connecting frame 14 through a bearing seat, so that the brake device can move smoothly on the mine car track.

[0055] In some embodiments, the end surfaces of the first slider 21 and the second slider 22 that contact the mine car running track are provided with transversely arranged anti-slip ribs, the cross-section of the anti-slip ribs is an isosceles triangle, the anti-slip ribs are integrally formed with the first slider 21, and the anti-slip ribs are integrally formed with the second slider 22, and anti-slip grooves are formed between adjacent anti-slip ribs.

[0056] The transversely arranged anti-skid ribs not only increase the friction between the first and second sliders 21, 22 and the mine car track, but also effectively prevent the brake device from slipping during emergency braking, thereby improving its safety and reliability. Furthermore, the isosceles triangular cross-section of the anti-skid ribs allows them to better embed into the mine car track surface when subjected to force, further enhancing the anti-skid effect. Furthermore, the provision of anti-skid grooves facilitates water and chip removal, preventing moisture and debris from accumulating between the sliders and the track, which could affect braking performance.

[0057] In some embodiments, the first connecting member 31 and the second connecting member 32 each include a connecting piece 33 provided in parallel, the connecting piece 33 is rectangular, and a circular through hole is provided in the middle of the connecting piece 33;

[0058] The connecting piece 33 of the first connecting component 31 is connected to the lifting lug at the bottom of the mine car through a shackle, and the connecting piece 33 of the second connecting component 32 is connected to the rope clamp of the winch wire rope through a shackle.

[0059] The connecting piece 33 of the first connecting member 31 and the second connecting member 32 facilitates the connection between the coal mine car brake system, the mine car, and the winch. The rectangular shape of the connecting piece 33 and the circular through-hole in the middle not only facilitate installation and removal, but also ensure the strength and stability of the connecting components under load. The shackle connects to the lifting lug at the bottom of the mine car and the rope clamp of the winch wire rope through the shackle, making it simple and easy to operate. Furthermore, the parallel arrangement of the connecting pieces 33 increases the redundancy of the connection. Even if one connecting piece 33 is damaged, the other connecting piece 33 can still maintain the connection, improving the safety and reliability of the entire brake system.

[0060] In some embodiments, a guide rod is also included, which is arranged parallel to the inclination direction of the first slide 11 and the second slide 12, and the two ends of the guide rod are respectively welded and fixed to the side walls of the connecting device 1; the first slider 21 and the second slider 22 are both provided with guide holes adapted to the guide rod, the guide rod passes through the guide hole and fits in the gap with the hole wall of the guide hole, and a wear-resistant bushing is provided in the guide hole.

[0061] Among them, when the brake device of the coal mine car is working, the first slider 21 and the second slider 22 will slide along the first slide 11 and the second slide 12. The presence of the guide rod ensures the directionality and stability of the sliding of the sliders, reducing the offset or shaking of the first slider 21 and the second slider 22 during the sliding process. The provision of the wear-resistant bushing reduces the friction between the guide rod and the guide hole, prolongs the service life of the brake device of the coal mine car, and ensures the smooth sliding of the first slider 21 and the second slider 22. In addition, the guide rod is welded and fixed to the side wall of the connecting device 1, making the guide rod more firm and not easy to fall off or be damaged, further improving the overall strength and safety of the brake device.

[0062] In some embodiments, the present application provides a coal mine car braking method, which is applied to the coal mine car braking device provided in the above embodiment, including:

[0063] Connect the coal mine car brake device to the mine car through the first connecting component 31;

[0064] Connect the coal mine car brake device to the winch via the second connecting member 32;

[0065] During normal traction, the traction wire rope of the mine car is tensioned, and the elastic driving component 4 is pulled by the hook component to store energy, and the slider assembly maintains a gap with the mine car running track, and the mine car runs normally;

[0066] When the wire rope breaks, the elastic driving component 4 releases the stored energy, driving the slider assembly to move along the first slide 11 and the second slide 12. The horizontal sections of the end faces respectively abut against the upper and lower end faces of the groove, and the friction between the slider assembly and the mine car running track is used to achieve mine car braking.

[0067] It can be seen from the above technical scheme that the present application provides a coal mine car braking device and method, the coal mine car braking device includes: a connecting device 1, the connecting device 1 is arranged across the mine car running track; the connecting device 1 is provided with a first slide 11 and a second slide 12; the first slide 11 and the second slide 12 are arranged obliquely; a slider assembly; the slider assembly includes a first slider 21 and a second slider 22, the first slider 21 is arranged in the first slide 11, and the second slide 12 is arranged in the second slide 12, and the two ends of the first slider 21 and the second slider 22 are respectively arranged in grooves on both sides of the mine car running track; the first slider 21 and the second slider 22 are connected by a fixing rod 23; a connecting component, including a first connecting component 31 and a second connecting component 32, one end of the first connecting component 31 is connected to the mine car, and the other end of the first connecting component 31 is connected to the first slider 21; one end of the second connecting component 32 is connected to the winch, and the other end of the second connecting component 32 passes through the elastic driving component 4 and is connected to the second slider 22; when the elastic driving component 4 is deformed, it drives the second slider 22 to move along the second slide 12. Through the elastic driving component 4, when the winch pulls the mine car, the first slider 21 and the second slider 22 are separated from the mine car running track. When the wire rope breaks, the elastic driving component 4 pushes the second slider 22 to move, and then drives the first slider 21 to move. The first slider 21 and the second slider 22 press the mine car running track, thereby achieving the effect of slowing down the mine car, so as to solve the problems of response lag, insufficient braking efficiency and easy failure of passive protection in the mine car blocking measures in the coal mine inclined lane winch towing mine car transportation scenario.

[0068] Similar parts between the embodiments provided in this application can be referenced to each other. The specific implementation methods provided above are only a few examples under the overall concept of this application and do not constitute a limitation on the scope of protection of this application. For those skilled in the art, any other implementation methods expanded based on the scheme of this application without expending creative work shall fall within the scope of protection of this application.

Claims

1. A coal mine car brake device, characterized in that: include: A connecting device is provided, the connecting device being arranged across the mine car running track; the connecting device is provided with a first slide and a second slide; the first slide is arranged at an inclination, and the second slide is arranged at an inclination; Slider assembly; the slider assembly includes a first slider and a second slider, the first slider is arranged in the first slideway, the second slider is arranged in the second slideway, the two ends of the first slider are respectively arranged in the grooves on both sides of the mine car running track, and the two ends of the second slideway are respectively arranged in the grooves on both sides of the mine car running track; the first slider and the second slider are connected by a fixing rod; The connecting component includes a first connecting component and a second connecting component, wherein one end of the first connecting component is connected to the mining car, and the other end of the first connecting component is connected to the first slider; one end of the second connecting component is connected to the winch, and the other end of the second connecting component passes through the elastic driving component and is connected to the second slider; When the elastic driving component is deformed, it drives the second sliding block to move along the second slideway.

2. The coal mine car brake device according to claim 1, characterized in that: The first slider and the second slider are symmetrically and tiltedly arranged; both ends of the first slider and the second slider are provided with end surfaces adapted to contact the grooves of the mine car running track.

3. The coal mine car brake device according to claim 2, characterized in that: The end surface includes a vertical section that fits the side surface of the groove and a horizontal section that fits the edge of the groove; when the first slider and the second slider hold the mine car running track, the horizontal section respectively abuts the upper end surface and the lower end surface of the groove.

4. The coal mine car brake device according to claim 1, characterized in that: The height of the first slide gradually increases along the direction from away from the second slide to close to the second slide, and the height of the second slide gradually increases along the direction from away from the first slide to close to the first slide. When the second slider slides downward along the second slide, the fixed rod drives the first slider to slide upward along the first slide; when the second slider slides upward along the second slide, the fixed rod drives the first slider to slide downward along the first slide.

5. The coal mine car brake device according to claim 1, characterized in that: One end of the elastic driving component is against the baffle on the inner side of the connecting device, and the baffle is vertically welded to the side wall of the connecting device. The other end of the elastic driving component is against the pressure-bearing surface of the second slider, and the pressure-bearing surface is the plane of the second slider away from the first slider. When the winch pulls the connecting device, the elastic driving component is compressed between the baffle and the pressure-bearing surface, and the axial direction of the elastic driving component is consistent with the travel direction of the mine car.

6. The coal mine car brake device according to claim 1, characterized in that: The connecting device includes a connecting frame and a trapezoidal platform, the two ends of the connecting frame are respectively connected to the lower end of the trapezoidal platform, and the gap between the connecting frame and the trapezoidal platform is the first slide and the second slide; bearing seats are provided at the bottom of both sides of the connecting frame, and wheels are installed in the bearing seats, and the wheels are in contact with the running track of the mine car; the connecting frame and the trapezoidal platform are formed as one piece.

7. The coal mine car brake device according to claim 1, characterized in that: The end surfaces of the first slider and the second slider that contact the mine car running track are provided with transversely arranged anti-slip ribs, the cross-section of the anti-slip ribs is an isosceles triangle, the anti-slip ribs and the first slider are integrally formed, and the anti-slip ribs and the second slider are integrally formed, and anti-slip grooves are formed between adjacent anti-slip ribs.

8. The coal mine car brake device according to claim 1, characterized in that: The first connecting member and the second connecting member each include parallel connecting pieces, each of which is rectangular and has a circular through hole in the middle. The connecting piece of the first connecting component is connected to the lifting lug at the bottom of the mine car through a shackle, and the connecting piece of the second connecting component is connected to the rope clip of the winch wire rope through a shackle.

9. The coal mine car brake device according to claim 1, characterized in that: It also includes a guide rod, which is arranged parallel to the inclination direction of the first slide and the second slide, and the two ends of the guide rod are respectively welded and fixed to the side walls of the connecting device; the first slider and the second slider are both provided with guide holes adapted to the guide rod, the guide rod passes through the guide hole and is gap-fitted with the hole wall of the guide hole, and a wear-resistant bushing is provided in the guide hole.

10. A coal mine car braking method, applied to the coal mine car braking device according to any one of claims 1 to 9, characterized in that: include: Connecting the coal mine car brake device to the mine car via a first connecting component; Connecting the coal mine car brake device to the winch via a second connecting component; During normal traction, the traction wire rope of the mine car is tensioned, and the elastic driving component is pulled by the hook component to store energy. The slider assembly maintains a gap with the mine car running track, and the mine car operates normally; When the wire rope breaks, the elastic driving component releases the stored energy, driving the slider assembly to move along the first slide and the second slide, and the horizontal sections of the end surface respectively abut against the upper end surface and the lower end surface of the groove, and the friction between the slider assembly and the mine car running track is used to achieve mine car braking.

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