Connecting bolt locking device for coal mine rail transport vehicle

Abstract

The invention discloses a connecting bolt locking device for a coal mine rail transport vehicle, which is characterized by comprising a locking device body (7), a connecting bolt (4) and a collision head seat (6), the locking device body (7) comprises a spring base (1) and a gland (5), two through grooves (5-1) are formed in the gland (5), and two non-through grooves (5-2) which do not penetrate through the gland are formed in the bottom face of the gland (5). The spring base (1) is fixedly connected with the gland (5), the spring (2) and the floating ring (3) are installed in the spring base (1), and the floating ring (3) is located between the spring (2) and a transverse pin (4-1) connected with the plug pin (4). The locking device body (7) is mounted on a collision head seat (6) of a transport vehicle; an inner hole of the spring (2) is aligned with a collision head seat bolt hole (6-1); and the connecting bolt (4) adopts a special bolt provided with a transverse pin (4-1). The connecting bolt for the transport vehicle can be effectively locked, and the connecting bolt is simple in structure and convenient to operate and use.

Description

Technical Field

[0001] This invention belongs to the field of mining machinery, specifically relating to a connecting pin locking device for coal mine rail transport vehicles. Background Technology

[0002] In coal mine rail transport vehicles such as locomotives, mine cars, personnel carriers in level tunnels, and flatbed cars, connections are mostly made using connecting pins. During vehicle start-up, stopping, and operation, these connecting pins may loosen due to vibration and impact. This is especially true for mine cars, which need to be tipped over by a tipper, where pin detachment is a frequent occurrence. This affects the safe and stable operation of the transport system. Summary of the Invention

[0003] To address the problems existing in the prior art, this invention provides a locking device that is simple in structure, easy to operate, and can effectively lock transport vehicles with connecting pins, preventing the connecting pins from coming loose.

[0004] This invention is achieved through the following technical solution: a connecting pin locking device for coal mine rail transport vehicles, comprising a locking device body, a connecting pin, and a stop seat. The locking device body includes a spring base and a pressure cover. The pressure cover has two through slots, and its bottom surface has two non-through slots that do not penetrate the pressure cover. The spring base and the pressure cover are welded together, and a spring and a floating ring are installed inside. The floating ring is located between the spring and the cross pin of the connecting pin. The locking device body is installed on the stop seat of the transport vehicle, with the inner hole of the spring aligned with the pin hole of the stop seat. The connecting pin is a special pin with a cross pin.

[0005] Furthermore, the floating ring and the spring are in non-fixed contact, which can prevent the cross pin from getting stuck with the spring when the connecting pin rotates.

[0006] Furthermore, the floating ring and the spring base adopt an H9 / h8 fit to ensure a precise fit and stable connection between the floating ring and the spring base.

[0007] Furthermore, the inner diameter of the spring base is 1mm larger than the outer diameter of the spring, and the height of the spring base is determined by calculation based on the length of the spring and the design locking force. The spring base can guide the spring and the floating ring.

[0008] The height of the spring base needs to take into account factors such as the spring's maximum height, pre-compression value, and actual compression value. Calculating these parameters determines the correct installation height of the spring, ensuring it provides stable support and locking effect during operation.

[0009] The formula for calculating the height of the spring base is: H = (Hmax + Fy) − SP − press Maximum spring height (Hmax): The maximum height of the spring when it is placed in the spring box after pre-compression, without any load.

[0010] Spring pre-compression value (Fy): The value at which the spring needs to be pre-compressed before installation to ensure that the spring can maintain a stable shape during operation.

[0011] Actual spring compression value (SP-press): The value of compression of the spring during actual operation, which needs to be accurately calculated according to design requirements.

[0012] Compared with existing technologies, the advantages of this invention are: it can effectively lock the transport vehicle with connecting pins, preventing the connecting pins from coming loose and ensuring the safe and stable operation of the transport vehicle. It also features a simple structure and is easy to use. Attached Figure Description

[0013] Figure 1 A schematic diagram of a connecting pin locking device for coal mine rail transport vehicles. Figure 2 This is a schematic diagram of the gland structure; Figure 3 This is a schematic diagram of the connecting pin structure.

[0014] In the diagram: 1. Spring base, 2. Spring, 3. Floating ring, 4. Connecting pin, 4-1. Horizontal pin, 5. Pressure cap, 5-1. Through groove, 5-2. Non-through groove, 6. Collet seat, 6-1. Collet seat pin hole, 7. Locking device body. Detailed Implementation

[0015] To help those skilled in the art better understand the technical solutions of the present invention, the technical solutions of the present invention will be further described clearly and completely below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] like Figures 1-3 As shown in the figure, the connecting pin locking device for a coal mine rail transport vehicle provided in this embodiment includes a locking device body 7, a connecting pin 4, and a stop seat 6. The locking device body 7 includes a spring base 1 and a pressure cover 5. The pressure cover 5 has two through slots 5-1 and two non-through slots 5-2 on its bottom surface that do not penetrate the pressure cover. The spring base 1 and the pressure cover 5 are welded together, and a spring 2 and a floating ring 3 are installed inside. The locking device body 7 is installed on the stop seat 6 of the transport vehicle, and the inner hole of the spring 2 is aligned with the pin hole 6-1 of the stop seat. The connecting pin 4 is a special pin with a cross pin 4-1.

[0017] The floating ring 3 is located between the spring 2 and the horizontal pin 4-1 of the connecting pin 4. The floating ring 3 and the spring 2 are in non-fixed contact, which can prevent the horizontal pin 4-1 from getting stuck with the spring 2 when the connecting pin 4 rotates.

[0018] The inner diameter of the spring base 1 is 1mm larger than the outer diameter of the spring 2. The height of the spring base 1 is determined by calculation based on the length of the spring 2 and the design locking force. The spring base 1 can guide the spring 2 and the floating ring 3.

[0019] The height of the spring base 1 needs to take into account factors such as the maximum height of the spring, the pre-compression value, and the actual compression value. By calculating these parameters, the correct height of the spring during installation can be determined, ensuring that the spring can provide stable support and locking effect during operation.

[0020] The formula for calculating the height of spring base 1 is: H = (Hmax + Fy) − SP − press Maximum spring height (Hmax): The maximum height of the spring when it is placed in the spring box after pre-compression, without any load.

[0021] Spring pre-compression value (Fy): The value at which the spring needs to be pre-compressed before installation to ensure that the spring can maintain a stable shape during operation.

[0022] Actual spring compression value (SP-press): The value of compression of the spring during actual operation, which needs to be accurately calculated according to design requirements.

[0023] The floating ring 3 and the spring base 1 are fitted with an H9 / h8 fit to ensure a precise fit and stable connection between the floating ring 3 and the spring base 1.

[0024] The method of use and working principle are as follows: Install the locking device body 7 on the bumper seat 6 of the transport vehicle, with the inner hole of the spring aligned with the pin hole 6-1 of the bumper seat. When the connecting pin 4 is inserted into the locking device body 7, the horizontal pin 4-1 is aligned with the through groove 5-1 on the pressure cover 5. Press down on the connecting pin 4, and the horizontal pin 4-1 pushes the floating ring 3 and compresses the spring 2. After the horizontal pin 4-1 passes through the pressure cover 5, rotate the connecting pin 4 so that the horizontal pin 4-1 of the connecting pin 4 hits the bottom surface of the pressure cover 5. Continue to rotate the connecting pin 4 so that the horizontal pin 4-1 is aligned with the non-through groove 5-2 on the bottom surface of the pressure cover 5. The spring 2 rebounds, and under the action of the spring 2, the horizontal pin 4-1 is pressed into the non-through groove 5-2, completing the installation and locking of the connecting pin 4.

[0025] When removing the pin, press down and rotate the connecting pin 4. When the horizontal pin 4-1 is aligned with the through groove 5-1 of the positive pressure cover 5, the horizontal pin 4-1 will enter the through groove 5-1 under the action of the spring 2, and the connecting pin 4 will be released from lock. The connecting pin 4 can then be pulled out.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A connecting pin locking device for coal mine rail transport vehicles, characterized in that, The device includes a locking device body (7), a connecting pin (4), and a bumper seat (6); the connecting pin (4) is a special pin with a cross pin (4-1); the locking device body (7) includes a spring base (1) and a pressure cover (5), the pressure cover (5) has two through slots (5-1), and the bottom surface of the pressure cover (5) has two non-through slots (5-2) that do not penetrate the pressure cover (5); the spring base (1) and the pressure cover (5) are fixedly connected, and a spring (2) and a floating ring (3) are installed inside it, the floating ring (3) is located between the spring (2) and the cross pin (4-1) of the connecting pin (4); the locking device body (7) is installed on the bumper seat (6) of the transport vehicle, and the inner hole of the spring (2) is aligned with the bumper seat pin hole (6-1).

2. The connecting pin locking device for coal mine rail transport vehicles according to claim 1, characterized in that, The spring base (1) and the pressure cap (5) are welded together.

3. The connecting pin locking device for coal mine rail transport vehicles according to claim 1, characterized in that, The floating ring (3) and the spring (2) are in non-fixed contact.

4. A connecting pin locking device for coal mine rail transport vehicles according to claim 3, characterized in that, The floating ring (3) and the spring base (1) are fitted with an H9 / h8 configuration.

5. A connecting pin locking device for coal mine rail transport vehicles according to claim 1, characterized in that, The inner diameter of the spring base (1) matches the outer diameter of the spring (2); the height of the spring base (1) is calculated by the following formula: H = (Hmax + Fy) − SP − press Where: H is the height of the spring base, Hmax is the maximum height of the spring, Fy is the pre-compression value of the spring, and SP-press is the actual compression value of the spring; The maximum height of a spring (Hmax) refers to the maximum height of the spring when it is placed in the spring box after pre-compression, without any load. The spring pre-compression value (Fy) refers to the value at which the spring needs to be pre-compressed before installation to ensure that the spring can maintain a stable shape during operation. The actual compression value of a spring (SP-press) refers to the value of compression of the spring during actual operation, which needs to be accurately calculated according to design requirements.

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