Connecting bolt locking device for coal mine rail transport vehicle

Abstract

The utility model 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 locking device can effectively lock the connecting bolt for the transport vehicle, and is simple in structure and convenient to operate and use.

Description

Technical Field

[0001] The utility model belongs to the field of mining machinery, and particularly relates to a connecting pin locking device for coal mine track transportation vehicles. Background Technique

[0002] Most of the connections between coal mine track transportation vehicles such as electric locomotives, mine cars, roadway personnel carriers, and flatbed trucks are connected by connecting pins. During the starting, stopping, and running of the vehicles, due to vibration, impact, and other reasons, the connecting pins may become loose. Especially for mine cars, they need to enter a tippler for tipping, and the phenomenon of connecting pin detachment often occurs, affecting the safe and stable operation of the transportation system. Summary of the Invention

[0003] To solve the problems existing in the prior art, the utility model provides a locking device with a simple structure, convenient operation and use, which can effectively lock the connecting pin for transportation vehicles and prevent the connecting pin of the vehicle from detaching.

[0004] The utility model is realized by the following technical solutions: A connecting pin locking device for coal mine track transportation vehicles includes a locking device body, a connecting pin, and a bumper seat. The locking device body includes a spring base and a gland. Two through slots are opened on the gland, and two non-through slots that do not penetrate the gland are opened on the bottom surface of the gland. The spring base and the gland 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 bumper seat of the transportation vehicle, and the inner hole of the spring is aligned with the pin hole of the bumper seat. The connecting pin uses a special pin with a cross pin.

[0005] Further, 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] Further, the floating ring and the spring base adopt an H9 / h8 fit to ensure the precise fit and stable connection between the floating ring and the spring base.

[0007] Further, the inner diameter of the spring base is 1 mm larger than the outer diameter of the spring. The height of the spring base is determined by calculation according to the length of the spring and the designed locking force. The spring base can guide the spring and the floating ring.

[0008] The height of the spring base needs to consider factors such as the maximum height of the spring, the pre-compression value, and the actual compression value. Through the calculation of these parameters, the correct height of the spring during installation can be determined to ensure that the spring can provide stable supporting force and locking effect during operation.

[0009] The height calculation formula of the spring base is: H = (Hmax + Fy) - SP - press

[0010] Maximum height of the spring (Hmax): The maximum height of the spring when it is placed in the spring box after pre-compression, which is the height without any load.

[0011] Spring pre-compression value (Fy): The value by which the spring needs to be pre-compressed before installation to ensure that the spring can maintain a stable form during operation.

[0012] Actual compression value of the spring (SP-press): The value by which the spring is compressed during actual operation, which needs to be accurately calculated according to the design requirements.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: It can effectively lock the connecting pin for transportation vehicles, prevent the disengagement of the vehicle connecting pin, and ensure the safe and stable operation of the transportation vehicle. The structure is simple and easy to use. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a locking device for a connecting pin of a coal mine track transportation vehicle;

[0015] Figure 2 It is a schematic structural diagram of a gland;

[0016] Figure 3 It is a schematic structural diagram of a connecting pin.

[0017] In the figure: 1. Spring base, 2. Spring, 3. Floating ring, 4. Connecting pin, 4-1. Transverse pin, 5. Gland, 5-1. Through slot, 5-2. Non-through slot, 6. Bumper seat, 6-1. Bumper seat pin hole, Locking device body 7. Detailed Embodiment

[0018] To help those of ordinary skill in the art better understand the technical solution of the present utility model, the technical solution of the present utility model will be further clearly and completely described below in conjunction with the embodiments and drawings of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0019] Such as Figures 1 to 3As shown in the figure, a connection pin locking device for a coal mine track transportation vehicle provided in this embodiment includes a locking device body 7, a connection pin 4, and a bumper seat 6. The locking device body 7 includes a spring base 1 and a gland 5. Two through slots 5-1 are opened on the gland 5, and two non-through slots 5-2 that do not penetrate the gland are opened on the bottom surface of the gland 5. The spring base 1 and the gland 5 are welded together, and a spring 2 and a floating ring 3 are installed therein. The locking device body 7 is installed on the bumper seat 6 of the transportation vehicle, and the inner hole of the spring 2 is aligned with the pin hole 6-1 of the bumper seat. The connection pin 4 is a special pin provided with a cross pin 4-1.

[0020] The floating ring 3 is located between the spring 2 and the cross pin 4-1 of the connection pin 4. The floating ring 3 is in non-fixed contact with the spring 2, which can prevent the cross pin 4-1 from getting stuck with the spring 2 when the connection pin 4 rotates.

[0021] The inner diameter of the spring base 1 is 1 mm larger than the outer diameter of the spring 2. The height of the spring base 1 is determined by calculation according to the length of the spring 2 and the designed locking force. The spring base 1 can guide the spring 2 and the floating ring 3.

[0022] The height of the spring base 1 needs to consider factors such as the maximum height of the spring, the pre-compression value, and the actual compression value. Through the calculation of these parameters, the correct height of the spring during installation can be determined to ensure that the spring can provide stable supporting force and locking effect during operation.

[0023] The height calculation formula of the spring base 1 is: H = (Hmax + Fy) - SP - press

[0024] Maximum height of the spring (Hmax): The maximum height of the spring when it is placed in the spring box after pre-compression, which is the height without any load.

[0025] Pre-compression value of the spring (Fy): The value that the spring needs to be pre-compressed before installation to ensure that the spring can maintain a stable shape during operation.

[0026] Actual compression value of the spring (SP - press): The value that the spring is compressed during actual operation, which needs to be accurately calculated according to the design requirements.

[0027] The floating ring 3 and the spring base 1 adopt an H9 / h8 fit to ensure the precise fit and stable connection between the floating ring 3 and the spring base 1.

[0028] The method of use and working principle are as follows: the locking device body 7 is installed on the bumper seat 6 of the transport vehicle, and the inner hole of the spring is 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 transverse pin 4-1 is aligned with the transparent groove 5-1 on the pressure cover 5, and the connecting pin 4 is pressed down with force, and the transverse pin 4-1 pushes the floating ring 3 and compresses the spring 2. After the transverse pin 4-1 passes through the pressure cover 5, the connecting pin 4 is rotated so that the transverse pin 4-1 of the connecting pin 4 is pressed against the bottom surface of the pressure cover 5. When the connecting pin 4 is further rotated so that the transverse pin 4-1 is aligned with the non-transparent 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 transverse pin 4-1 is pressed into the non-transparent groove 5-2, completing the installation and locking of the connecting pin 4.

[0029] When removing the latch, press down and rotate the connecting latch 4. When the transverse pin 4-1 is aligned with the through groove 5-1 of the pressure cover 5, the transverse pin 4-1 enters the through groove 5-1 under the action of the spring 2, and the connecting latch 4 is unlocked, and the connecting latch 4 can be pulled out.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A connecting bolt locking device for a coal mine track transportation vehicle, characterized in that, The invention comprises a locking device body (7), a connecting pin (4) and a headstock (6); the connecting pin (4) is a special pin provided with a transverse pin (4-1); the locking device body (7) comprises a spring base (1) and a pressure cover (5); the pressure cover (5) is provided with two through grooves (5-1); the bottom surface of the pressure cover (5) is provided with two non-through grooves (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 therein, and the floating ring (3) is located between the spring (2) and the transverse pin (4-1) of the connecting pin (4); the locking device body (7) is installed on the headstock (6) of the transport vehicle, and the inner hole of the spring (2) is aligned with the pin hole (6-1) of the headstock.

2. The connecting pin locking device for a coal mine track transportation vehicle according to claim 1, characterized in that The spring base (1) and the gland (5) are welded together as one.

3. A connecting bolt locking device for a coal mine track transportation vehicle according to claim 1, characterized in that The floating ring (3) is in non-fixed contact with the spring (2).

4. The connecting bolt locking device for a coal mine track transportation vehicle according to claim 3, characterized in that, The floating ring (3) and the spring base (1) are matched in H9 / h8.

5. The connecting bolt locking device for a coal mine rail transport vehicle 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 spring height (Hmax) refers to the maximum height of the spring when it is placed in the spring box after pre-compression, without any load; ‌Spring pre-compression value (Fy) refers to the value that 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 the spring (SP-press) refers to the value by which the spring is compressed during actual work and needs to be accurately calculated according to design requirements.

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