Pin-falling-preventing locking device for mine car
By designing multiple anti-separation rings with rectangular grooves and spiral grooves and four cylindrical pin anti-separation pin locking devices for mine cars, the problem of the mine car's pin jumping when operating on the slope is solved and higher connection stability is achieved. and security.
Patent Information
- Application Number
- CN202421063162.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-16
AI Technical Summary
Existing mine car connection devices are prone to jumping pins when operating on ramps, resulting in out-of-pinning and sports car accidents.
A mine car anti-separation pin locking device is designed, which includes an anti-separation pin body, an anti-separation ring and a cylindrical pin. There are multiple rectangular grooves and spiral grooves inside the anti-separation ring. There are four cylindrical pins, and the semi-surrounding design of the spiral grooves increases the contact area and restrains the runout of the cylindrical pins.
It effectively shares and restrains the beating of the cylindrical pin during shock and impact, reduces the phenomenon of pin disengagement and pin jumping, and improves the stability and safety of the mine car connection.
Smart Images
Figure CN222372885U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the connection field of a mine car, in particular to a mine car anti-dropout locking device. Background Art
[0002] In current mining operations, mine cars are frequently used in transportation. In daily production tasks, mine cars have complex working environments and are mostly connected and used at underground tracks. In the past, mine car connections mostly used traditional pins, chains, and traditional anti-slip rings.
[0003] In the daily use of mine cars, the underground tracks are irregular and there may be inclined shaft lifting. In such an environment, frequent collisions and vibrations will occur between the connections of the mine cars, and the pins will be impacted in different directions.
[0004] The traditional anti-drop pin has only two cylindrical pins for fixing, and its strength to withstand impact is limited. In addition, the traditional anti-drop ring has only two sliding grooves for restraint, and it may break due to fatigue or impact strength when it is impacted. At the same time, because the traditional anti-drop ring structure is too simple and has only two sliding grooves for restraint, the pin may jump when the mine car is operating on the slope, resulting in the pin being dropped and the mine car running away accident. Utility Model Content
[0005] The technical problem to be solved by the utility model is to overcome the defect in the prior art that a pin may jump out when a mine car is operating on a slope, which may lead to accidents, and to provide a pin-proof locking device for a mine car.
[0006] The utility model adopts a technical solution to solve its technical problems, which is a mine car anti-slip pin locking device, comprising an anti-slip pin body, an anti-slip ring and a cylindrical pin, wherein the anti-slip ring is fixedly connected to the mine car bumper; one end of the anti-slip pin body is fixedly connected with a handle for rotation, and the outer peripheral surface of the anti-slip pin body is provided with a plurality of pin holes evenly distributed in a circle, and the cylindrical pin is fixed in the pin hole; the anti-slip ring is hollow inside for the anti-slip pin body to pass through, one end surface of the anti-slip ring has a plurality of rectangular grooves evenly distributed in a circle, the anti-slip ring has a spiral groove inside, the number of the rectangular grooves corresponds to the number of the spiral grooves one by one, and the spiral groove is connected to the rectangular groove.
[0007] Furthermore, the spiral groove penetrates from the inner circumferential surface to the outer circumferential surface of the anti-slip ring.
[0008] Furthermore, four cylindrical pins are provided, and four pin holes and rectangular slots are provided.
[0009] Furthermore, chamfering is performed between the spiral groove and the rectangular groove.
[0010] The utility model has the following beneficial technical effects:
[0011] Two cylindrical pins are added to the basic cylindrical pin. The modification can greatly share the impact force caused by vibration and impact. The anti-slip ring uses a rectangular groove plus a spiral groove design. Its structure is simple, and the semi-enclosed design of the spiral groove can increase the contact area with the cylindrical pin, which can better share the impact force with the cylindrical pin. The spiral groove can restrain the beating of the cylindrical pin in both radial and axial directions, avoiding the impact force caused by the beating of the cylindrical pin and the possible pin jump phenomenon. Considering the underground environment, the spiral groove is opened up, which can better adapt to the underground environment with a lot of water and mud, and is easy to clean. The user only needs to rotate 45° to complete the insertion and extraction of the pin, which is simple to use. It can not only greatly reduce the pin breakage and pin jump accidents caused by the fracture of the cylindrical pin and insufficient constraint, but also increase the user's work efficiency and reduce the corresponding cost in subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a cylindrical pin of an embodiment of a pin-loosening prevention locking device for a mine car of the utility model;
[0013] Figure 2 It is an anti-dropout pin main body of an anti-dropout pin locking device embodiment of a mine car of the utility model;
[0014] Figure 3 It is an anti-slip ring of an embodiment of a locking device for preventing a pin from slipping off a mine car of the utility model;
[0015] Figure 4 The utility model is a kind of embodiment of the anti-dropping pin locking device of the mine car Figure 1 Cylindrical pins and Figure 2 Out of stock subject coordination;
[0016] Figure 5 It is an anti-pin-dropping device as a whole of an anti-pin-dropping locking device embodiment of a mine car of the utility model;
[0017] Figure 6 The utility model is a practical installation diagram of an embodiment of a locking device for preventing a pin from falling off a mine car.
[0018] Description of reference numerals:
[0019] 1. Cylindrical pin; 1a. Long cylindrical pin; 1b. Short cylindrical pin; 2. Anti-drop pin body; 21. Handle; 22. Pin hole; 3. Anti-drop ring; 31. Rectangular groove; 32. Spiral groove; 4. Headrest frame. DETAILED DESCRIPTION
[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0021] Reference Figures 1 to 6 This embodiment includes an anti-dropout pin body 2, an anti-dropout ring 3 and a cylindrical pin 1, as shown in FIG. Figure 6 When in use, the anti-slip ring 3 is welded to the headrest 4 of the mine car. Figure 5 One end of the anti-dropout pin body 2 is fixedly connected with a handle 21 for rotation, so that the user can easily separate the anti-dropout pin body 2 and the anti-dropout ring 3. Figure 2 The outer surface of the anti-drop pin body 2 is provided with four pin holes 22 evenly distributed in a circle, and the cylindrical pin 1 is matched with the pin hole 22, that is, the cylindrical pin 1 is tightly inserted into the pin hole 22, and there are four cylindrical pins 1. Figure 1 , long cylindrical pin 1a, short cylindrical pin 1b, when used as Figure 4 By forming two through holes on the anti-drop pin body 2, four symmetrical pins can be formed on the same horizontal plane, so that they can be better positioned and matched with the rectangular groove.
[0022] like Figure 3 The interior of the anti-slip ring 3 is hollow and has a rectangular groove 31 and a spiral groove 32, wherein the rectangular groove 31 is arranged on one end surface of the anti-slip ring 3, the spiral groove 32 is arranged inside the anti-slip ring 3 and is connected with the rectangular groove 31, and the connected surfaces are chamfered, and the spiral groove 32 runs from the inner circumference of the anti-slip ring 3 to the outer circumference. The number of the rectangular grooves 31 and the spiral grooves 32 corresponds one to one.
[0023] like Figure 6 The cylindrical pin 1 is matched with the anti-slip pin body 2 to complete the assembly. After assembly, it is positioned with the rectangular groove 31 of the anti-slip ring 3, inserted into the anti-slip ring 3 fixed on the mine car collision frame 4, and then rotated along the spiral direction of the spiral groove 32, so that the cylindrical pin 1 rotates downward along the position of the spiral groove 32, and the matching is completed when it reaches the bottom.
[0024] The implementation principle of a device for preventing a mine car from falling off according to the utility model is as follows:
[0025] When the mine car vibrates and collides, the cylindrical pin 1 will be affected by the impact force and will jump. Since the cylindrical pin 1 is subjected to force from four directions instead of two in the past, it is less likely to break than in the past. Moreover, due to the constraint of the spiral groove 32, it is constrained in both the radial and axial directions, so the range of its jumping can be limited to achieve the purpose of preventing the pin from falling off. In addition, since the entrance of the spiral groove 32 and the rectangular groove 31 are constrained by a certain angle, it is difficult for the cylindrical pin 1 to fall off due to jumping, which greatly reduces the possibility of falling off. The user can easily lift the cylindrical pin 1 by rotating it upward.
[0026] The above are all preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited thereto. Among them, the same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively. Therefore: All equivalent changes made according to the structure, shape, and principle of the present utility model should be covered by the protection scope of the present utility model.
Claims
1. A locking device for preventing a pin from falling off a mine car, characterized in that: The invention comprises an anti-dropping pin body (2), an anti-dropping ring (3) and a cylindrical pin (1), wherein the anti-dropping ring (3) is fixedly welded on the surface of a mine car bumper frame (4); one end of the anti-dropping pin body (2) is fixedly connected with a handle (21) for rotation, and a plurality of pin holes (22) uniformly distributed in a circumference are arranged on the outer peripheral surface of the anti-dropping pin body (2), and the cylindrical pin (1) is fixed in the pin hole (22); the anti-dropping ring (3) is hollow inside for the anti-dropping pin body (2) to pass through, one end surface of the anti-dropping ring (3) is provided with a plurality of rectangular grooves (31) uniformly distributed in a circumference, and the anti-dropping ring (3) is provided with a spiral groove (32) inside, the number of the rectangular grooves (31) corresponds to the number of the spiral grooves (32), and the spiral groove (32) is connected with the rectangular groove (31).
2. A mine car anti-drop pin locking device according to claim 1, characterized in that: The spiral groove (32) penetrates from the inner circumferential surface to the outer circumferential surface of the anti-slip ring (3).
3. A mine car anti-drop pin locking device according to claim 1, characterized in that: The cylindrical pins (1) are provided in four numbers, and the pin holes (22) and the rectangular grooves (31) are provided in four numbers.
4. A mine car anti-drop pin locking device according to claim 1, characterized in that: The spiral groove (32) and the rectangular groove (31) are chamfered.