Mine car anti-running device

Abstract

The utility model belongs to the technical field of mine car equipment, and particularly discloses a mine car anti-running device which comprises two sets of anti-running mechanisms, one set of anti-running mechanisms is installed on a collision seat of a front mine car, the other set of anti-running mechanisms is installed on a collision seat of a rear mine car, and each anti-running mechanism comprises an installation frame. The installation frame is fixedly connected with the collision head seat, an upper connecting plate and a lower connecting plate are arranged on the installation frame, a traction bolt is connected between the upper connecting plate and the lower connecting plate, the head of the traction bolt is located above the upper connecting plate, the rod portion of the traction bolt downwards penetrates out of the lower connecting plate, and the portion, penetrating out of the lower connecting plate, of the traction bolt is connected with a traction nut. The device is simple in structure, production difficulty and cost are reduced, installation and maintenance are convenient and fast due to the detachable structure, carrying and transportation convenience is improved due to the light-weight and compact design, universality is high, and the device can be suitable for various mine cars with collision head seats.

Description

Technical Field

[0001] This utility model relates to the field of mining truck equipment technology, specifically to a mining truck anti-running device. Background Technology

[0002] When mine cars travel through underground tunnels, the connecting pins are prone to detachment due to severe bumps, vibrations, or long-term wear of the connecting pins. In existing technology, the traction connection between mine cars is typically achieved through a mechanical structure of a stop-and-lock ring, a connecting pin, and a chain: the stop-and-lock ring is welded to both ends of the mine car, and the upper part is directly welded to fix the lock ring. The connecting pin passes vertically through the center hole of the lock ring and engages with the traction chain to transmit traction force. In this structure, the connecting pin usually has a protruding positioning structure. After insertion, it needs to be rotated at a certain angle to engage with the groove of the lock ring, forming a mechanical lock. The engagement between the lock ring and the protruding positioning part prevents the connecting pin from popping out due to bumps or tension.

[0003] In actual operation, the clearance fit design between the connecting pin and the locking ring hole inherently allows for initial assembly clearance, enabling slight movement of the pin. Each slight movement continuously erodes the surface integrity of the material. Simultaneously, multiple factors dynamically combine, such as the traction force deflection caused by changes in the roadway slope, the inertial impact of heavy-load mine cars starting and stopping, and instantaneous vibrations at the track joints. The connecting pin repeatedly impacts the locking ring hole wall, accelerating wear and deformation of both, further weakening the locking ring's constraint on the connecting pin. When the locking ring and connecting pin are damaged under impact or the clearance between them becomes too large, the axial displacement of the connecting pin will exceed the locking ring's constraint limit, ultimately causing the pin to completely detach. When the connecting pin detaches, the traction in the mine workshop is disconnected, leading to a "runaway car" accident. The out-of-control mine car plunges at high speed under gravity, with its impact force and instantaneous acceleration far exceeding the interception speed capability of various car-stopping devices, causing multiple hazards including equipment damage, personnel injuries, and transportation disruptions.

[0004] The specific hazards of the accident are as follows: In terms of personnel casualties, runaway accidents are one of the most dangerous types of accidents in the mine hoisting and transportation system, which may result in miners being injured or killed; equipment damage involves serious damage to the mine car body, connecting devices, tracks and roadway support facilities; economic losses include not only the cost of equipment replacement, but also the long-term shutdown for maintenance caused by the accident; environmental damage is manifested in the damage to infrastructure such as roadway structure, track lines, ventilation ducts, and cables. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a mine car anti-running device. The device has a simple structure and can be detachably installed on the bumper seat of the mine car. It breaks through the limitations of traditional single protection, provides a second line of defense for the safe transportation of mine cars, and realizes the proactive prevention and control of accident risks.

[0006] This utility model is achieved through the following technical solution.

[0007] This utility model provides a mine car anti-runaway device, including an anti-runaway mechanism installed on the mine car bumper seat. Two sets of the anti-runaway mechanism are provided, one set installed on the bumper seat at the rear end of the front mine car and the other set installed on the bumper seat at the front end of the rear mine car. Each anti-runaway mechanism includes a mounting frame fixedly connected to the bumper seat. An upper connecting plate and a lower connecting plate are provided on the mounting frame. A traction bolt connects the upper and lower connecting plates. The head of the traction bolt is located above the upper connecting plate, and the shank of the traction bolt extends downward through the lower connecting plate. A traction nut is connected to the portion of the traction bolt extending through the lower connecting plate. The traction bolt on the front mine car and the traction bolt on the rear car are connected via a traction connector.

[0008] As a further improvement to the above solution, the mounting bracket includes an upper fixing bracket and a lower fixing plate. The upper fixing bracket is located above the corresponding bumper seat, and the lower fixing plate is located below the corresponding bumper seat. The upper fixing bracket includes a horizontal plate, and vertical plates are connected to both the left and right sides of the horizontal plate. A horizontal extension plate is connected to the lower end of the vertical plate outward. The horizontal extension plate and the lower fixing plate are connected by fixing bolts and fixing nuts.

[0009] As a further improvement to the above solution, a locking ring is provided on the bumper seat, and the locking ring is connected to a connecting pin. The mine cars can be connected by a chain through the connecting pin. The horizontal plate is provided with a through hole through which the locking ring can pass upward.

[0010] As a further improvement to the above solution, the upper connecting plate and the lower connecting plate are fixedly disposed between the two vertical plates, and the upper connecting plate and the lower connecting plate are located above the horizontal plate.

[0011] As a further improvement to the above solution, two traction bolts are provided, and traction connectors are sleeved on both traction bolts.

[0012] As a further improvement to the above solution, the traction connector is a steel wire rope, and the steel wire rope is provided with a locking buckle.

[0013] As a further improvement to the above scheme, the horizontal extension plate on each side is connected to the lower fixed plate by at least three fixing bolts.

[0014] As a further improvement to the above solution, a reinforcing rib is provided between the vertical plate and the corresponding horizontal extension plate.

[0015] As a further improvement to the above solution, an auxiliary ring is connected to the head of the traction bolt.

[0016] The beneficial effects of this utility model are:

[0017] In this invention, in addition to the connecting pin bearing the conventional traction load, this device is added as an independent secondary protection device, which is on standby in real time during mine car transportation. When the connecting pin comes off due to severe vibration or wear, the anti-running mechanism can independently bear the dynamic load of the mine car, reducing the connecting pin detachment accident from a high-probability fatal risk to a low-probability controllable event. This achieves a technological leap from "passive emergency response" to "active immunity," eliminating the triggering conditions for "runaway cars" accidents from the design level and ensuring the continuous effectiveness of the traction function.

[0018] Through the synergistic effect of dual-level protection, the probability of accidents caused by the detachment of connecting pins is significantly reduced, directly curbing the risk of mine car loss of control, reducing the probability of casualties, avoiding damage to the mine car body, track system and roadway support structure that may be caused by mine car loss of control, as well as the associated damage to ancillary facilities such as transport cables and ventilation ducts, providing higher safety assurance for the underground working environment, extending the equipment maintenance cycle, reducing unplanned downtime for maintenance, significantly reducing accident handling costs, shortening the time cost of post-disaster reconstruction, and ensuring the efficiency of ore transportation and the continuity of the system.

[0019] The device has a simple overall structure, which significantly reduces the difficulty of production and processing and the cost of materials. The detachable structure design makes the installation and maintenance process efficient and convenient. The lightweight and compact structure design improves the portability and transportation convenience, and the universal structure makes it compatible with various mine cars with bumper seats. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the anti-runaway mechanism in this utility model;

[0022] Figure 3 This is a schematic diagram of the mounting bracket in this utility model;

[0023] Figure 4 This is a schematic diagram of the present invention in use.

[0024] In the diagram: 1. Headrest; 2. Anti-runaway mechanism; 3. Mounting frame; 4. Upper connecting plate; 5. Lower connecting plate; 6. Traction bolt; 7. Traction nut; 8. Traction connector; 9. Upper fixing frame; 901. Horizontal plate; 902. Vertical plate; 903. Horizontal extension plate; 904. Through hole; 10. Lower fixing plate; 11. Fixing bolt; 12. Fixing nut; 13. Locking ring; 14. Connecting pin; 15. Chain; 16. Lock; 17. Reinforcing rib; 18. Auxiliary ring. Detailed Implementation

[0025] To further illustrate the technical solution of this utility model, the following description is provided in conjunction with the accompanying drawings and embodiments.

[0026] like Figures 1 to 4 As shown, this utility model provides a mine car anti-runaway device, including an anti-runaway mechanism 2 installed on the mine car bumper seat 1. The anti-runaway mechanism 2 is provided in two sets, one set of which is installed on the bumper seat 1 at the rear end of the front mine car, and the other set of which is installed on the bumper seat 1 at the front end of the rear mine car. The anti-runaway mechanism 2 includes a mounting frame 3, which is fixedly connected to the bumper seat 1. The mounting frame 3 is provided with an upper connecting plate 4 and a lower connecting plate 5. A traction bolt 6 is connected between the upper connecting plate 4 and the lower connecting plate 5. The head of the traction bolt 6 is located above the upper connecting plate 4, and the rod of the traction bolt 6 extends downward through the lower connecting plate 5. The part of the traction bolt 6 that extends through the lower connecting plate 5 is connected to a traction nut 7. The traction bolt 6 on the front mine car and the traction bolt 6 on the rear car are connected by a traction connector 8.

[0027] Specifically, the portion of the traction bolt 6 on the front mine car located between the upper connecting plate 4 and the lower connecting plate 5 is connected to the corresponding portion of the traction bolt 6 on the rear car via a traction connector 8.

[0028] Furthermore, the mounting bracket 3 includes an upper fixing bracket 9 and a lower fixing plate 10. The upper fixing bracket 9 is located above the corresponding bumper seat 1, and the lower fixing plate 10 is located below the corresponding bumper seat 1. The upper fixing bracket 9 includes a horizontal plate 901. Vertical plates 902 are connected to both the left and right sides of the horizontal plate 901. A horizontal extension plate 903 is connected to the lower end of the vertical plate 902. The horizontal extension plate 903 and the lower fixing plate 10 are connected by fixing bolts 11 and fixing nuts 12.

[0029] Furthermore, a locking ring 13 is provided on the headstock 1, and a connecting pin 14 is connected to the locking ring 13. The mine cars can be connected to each other through the connecting pin 14 and the chain 15. A through hole 904 is constructed on the horizontal plate 901, through which the locking ring 13 can pass upward.

[0030] The contact seat involved in this embodiment is the prior art. The contact seat 1 has an upper plate and a base. An opening for installing the ring chain 15 is constructed between the upper plate and the base. After the connecting pin 14 is inserted, it can prevent the ring chain 15 from disengaging from the opening. The locking ring 13 is disposed above the upper plate.

[0031] Specifically, the horizontal plate 901 is installed on the upper plate of the bumper seat 1 and is in close contact with the upper plate. The locking ring 13 can pass through the through hole 904 upwards. The through hole 904 and the locking ring 13 cooperate to play the role of preventing slippage and positioning.

[0032] Specifically, the horizontal extension plate 903 is located above the base of the headstock 1 and is in close contact with the upper surface of the base, while the lower fixing plate 10 is located below the base of the headstock 1 and is in close contact with the lower surface of the base.

[0033] Specifically, the horizontal extension plate 903 and the lower fixing plate 10 are fixedly connected to the head seat 1 by fixing bolts 11 and fixing nuts 12.

[0034] Specifically, the chain is a three-ring chain.

[0035] Furthermore, the upper connecting plate 4 and the lower connecting plate 5 are fixedly installed between the two vertical plates 902, and the upper connecting plate 4 and the lower connecting plate 5 are located above the horizontal plate 901.

[0036] Specifically, the upper connecting plate 4 and the lower connecting plate 5 are welded between the two vertical plates 902.

[0037] Furthermore, there are two traction bolts 6, and each of the two traction bolts 6 is fitted with a traction connector 8.

[0038] Specifically, one end of the traction connector 8 is fitted onto the corresponding traction bolt 6 of the front vehicle, and the other end of the traction connector 8 is fitted onto the corresponding traction bolt 6 of the rear vehicle.

[0039] Furthermore, the traction connector 8 is a steel wire rope with a locking buckle. The two ends of the steel wire rope form a collar structure through the locking buckle 16 and are sleeved on the corresponding traction bolt 6.

[0040] Specifically, when the connecting pin comes off due to severe vibration or wear, the traction bolt 6, together with the traction connector 8, can instantly replace the function of the connecting pin and the chain to continue the traction work. At the same time, the setting of two sets of traction connectors 8 can provide a more stable traction force.

[0041] Furthermore, the horizontal extension plate 903 on each side is connected to the lower fixed plate 10 by at least three fixing bolts 11.

[0042] Specifically, the left horizontal extension plate 903 is connected to the left end of the lower fixed plate 10 by three fixing bolts 11 and fixing nuts 12, and the right horizontal extension plate 903 is connected to the right end of the lower fixed plate 10 by three fixing bolts 11 and fixing nuts 12.

[0043] Furthermore, a reinforcing rib 17 connects the vertical plate 902 and the corresponding horizontal extension plate 903.

[0044] Furthermore, the head of the traction bolt 6 is connected to an auxiliary ring 18.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mine car anti-running device, characterized in that: It includes an anti-runaway mechanism (2) installed on the bumper seat (1) of the mine car. The anti-runaway mechanism (2) is provided in two sets. One set of anti-runaway mechanism (2) is installed on the bumper seat (1) at the rear end of the front mine car, and the other set of anti-runaway mechanism (2) is installed on the bumper seat (1) at the front end of the rear mine car. The anti-runaway mechanism (2) includes a mounting frame (3). The mounting frame (3) is fixedly connected to the bumper seat (1). The mounting frame (3) is provided with an upper connecting plate (4) and a lower connecting plate (5). A traction bolt (6) is connected between the upper connecting plate (4) and the lower connecting plate (5). The head of the traction bolt (6) is located above the upper connecting plate (4). The rod of the traction bolt (6) extends downward through the lower connecting plate (5). The part of the traction bolt (6) that extends through the lower connecting plate (5) is connected to a traction nut (7). The traction bolt (6) on the front mine car and the traction bolt (6) on the rear car are connected by a traction connector (8).

2. The mine car anti-running device according to claim 1, characterized in that: The mounting bracket (3) includes an upper fixing bracket (9) and a lower fixing plate (10). The upper fixing bracket (9) is located above the corresponding head seat (1), and the lower fixing plate (10) is located below the corresponding head seat (1). The upper fixing bracket (9) includes a horizontal plate (901). The left and right sides of the horizontal plate (901) are connected to vertical plates (902). The lower end of the vertical plate (902) is connected to a horizontal extension plate (903). The horizontal extension plate (903) and the lower fixing plate (10) are connected by fixing bolts (11) and fixing nuts (12).

3. The mine car anti-running device according to claim 2, characterized in that: The bumper seat (1) is provided with a locking ring (13), and the locking ring (13) is connected to a connecting pin (14). The mine cars can be connected by the connecting pin (14) and the chain (15). The horizontal plate (901) is provided with a through hole (904) through which the locking ring (13) can pass upward.

4. A mine car anti-running device according to claim 2, characterized in that: The upper connecting plate (4) and the lower connecting plate (5) are fixedly disposed between the two vertical plates (902), and the upper connecting plate (4) and the lower connecting plate (5) are located above the horizontal plate (901).

5. A mine car anti-running device according to claim 1, characterized in that: Two traction bolts (6) are provided, and traction connectors (8) are sleeved on both traction bolts (6).

6. A mine car anti-running device according to claim 1, characterized in that: The traction connector (8) is a steel wire rope, and a buckle (16) is provided on the steel wire rope.

7. A mine car anti-running device according to claim 2, characterized in that: The horizontal extension plate (903) on each side is connected to the lower fixed plate (10) by at least three fixing bolts (11).

8. A mine car anti-running device according to claim 2, characterized in that: A reinforcing rib (17) connects the vertical plate (902) and the corresponding horizontal extension plate (903).

9. A mine car anti-running device according to claim 1, characterized in that: The head of the traction bolt (6) is connected to an auxiliary ring (18).

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