Self-locking compression positioning pin structure

Abstract

The utility model relates to the field of positioning pin structures, in particular to a self-locking pressing positioning pin structure which comprises a pressure container, a connecting nozzle is fixedly connected to the side wall of the pressure container, a lock sleeve is fixedly connected to the tail end of the connecting nozzle, and a threaded sealing plug is connected to the inner side of the connecting nozzle through threads. The threaded sealing plug is slidably connected with the lock sleeve, a positioning pin is slidably connected into the threaded sealing plug, the positioning pin is connected with the lock sleeve in an inserted mode, and a first spring is arranged in the threaded sealing plug. The shifting rod used for transversely shifting the positioning pin is arranged on the positioning pin, then the self-locking pressing mechanism composed of the square rod, the connecting strip, the pressing sleeve, the spring and other components is arranged in the center of the threaded sealing plug, the shifting rod can be locked, in this way, loosening of the shifting rod and the positioning pin can be prevented, and the installation stability of the threaded sealing plug is further guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of positioning pin structure technology, and in particular to a self-locking clamping positioning pin structure. Background Technology

[0002] High-pressure vessel connectors are interface parts used to connect pipes, valves, or other equipment. Connectors typically include threaded, flanged, and welded joints to ensure reliable and safe sealing between the vessel and other equipment. When installing and using high-pressure vessel connectors, it is essential to strictly follow the manufacturer's installation guidelines and operating procedures to ensure the connector's safety and reliability. Unused connectors are generally temporarily sealed with threaded sealing plugs.

[0003] However, due to the high pressure inside the container, the threads of the threaded sealing plug are easily damaged by the force, which can cause the threaded sealing plug to fall off and become unstable. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies where the threads of the threaded sealing plug are easily damaged by stress due to the high pressure inside the container, leading to the detachment of the threaded sealing plug and insufficient stability. Therefore, a self-locking clamping positioning pin structure is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A self-locking clamping positioning pin structure includes a pressure vessel. A connecting nozzle is fixedly connected to the side wall of the pressure vessel. A locking sleeve is fixedly connected to the end of the connecting nozzle. A threaded sealing plug is threadedly connected to the inner side of the connecting nozzle. The threaded sealing plug is slidably connected to the locking sleeve. A positioning pin is slidably connected inside the threaded sealing plug. The positioning pin is inserted into the locking sleeve. A spring is provided inside the threaded sealing plug. A lever is fixedly connected to the pin body of the positioning pin. The lever is slidably connected through the threaded sealing plug. A square rod is slidably connected inside the center of the threaded sealing plug. A connecting strip is fixedly connected to the end of the square rod. Pressure sleeves are fixedly connected to both ends of the connecting strip. The pressure sleeves are slidably sleeved with the lever. A second spring is provided inside the center of the threaded sealing plug.

[0007] Furthermore, in a preferred configuration, a rotating bracket, made of plastic, is fixedly connected to the threaded sealing plug. This rotating bracket facilitates the tightening and loosening of the threaded sealing plug.

[0008] Furthermore, in a preferred configuration, one end of the spring is fixedly connected to the locating pin, and the other end of the spring is fixedly connected to the inner surface of the threaded sealing plug. By using the spring, the elastic force can be applied to the locating pin, ensuring it remains inserted into the locking sleeve.

[0009] Furthermore, a preferred configuration is that the square rod has balls mounted on its body, and these balls contact the inner surface of the threaded sealing plug. The presence of balls reduces the relative friction between the square rod and the threaded sealing plug.

[0010] Furthermore, a preferred structure is that the square rod is square in shape, and the square rod and the connecting strip are an integral part of the structure. By setting the square rod to a square shape, rotation can be prevented.

[0011] Furthermore, in a preferred configuration, one end of the second spring is fixedly connected to the square rod, and the other end of the second spring is fixedly connected to the inner surface of the threaded sealing plug. By using the second spring, a reaction force can be applied to the square rod.

[0012] The beneficial effects of this utility model are as follows: a threaded sealing plug is temporarily screwed into the unused connection port of the pressure vessel for sealing. In addition, a locking sleeve is set at the opening of the connection port, and a positioning pin that is extended and retracted by a spring is set inside the threaded sealing plug. The positioning pin can be inserted into the locking sleeve under the action of the spring, thereby locking and fixing the threaded sealing plug and preventing it from loosening. In addition, a lever for lateral movement is set on the positioning pin, and a self-locking clamping mechanism composed of a square rod, connecting bar, pressure sleeve and spring is set at the center of the threaded sealing plug to lock the lever. This can prevent the lever from loosening with the positioning pin and further ensure the stability of the threaded sealing plug installation. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the overall structure of a self-locking clamping positioning pin structure proposed in this utility model;

[0014] Figure 2 This utility model proposes a self-locking clamping positioning pin structure. Figure 1 A partial three-dimensional sectional view of the structure;

[0015] Figure 3 This utility model proposes a self-locking clamping positioning pin structure. Figure 2 A magnified view of the local structure;

[0016] Figure 4 This utility model proposes a self-locking clamping positioning pin structure. Figure 1 A schematic diagram of the connector structure;

[0017] Figure 5 This utility model proposes a self-locking clamping positioning pin structure. Figure 1 A schematic diagram of the threaded sealing plug structure.

[0018] In the diagram: 1. Pressure vessel; 2. Connecting nozzle; 3. Locking sleeve; 4. Threaded sealing plug; 5. Rotating frame; 6. Positioning pin; 7. Spring 1; 8. Lever; 9. Square rod; 10. Connecting bar; 11. Pressure sleeve; 12. Spring 2; 13. Ball bearing. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-5 A self-locking clamping positioning pin structure includes a pressure vessel 1. A connecting nozzle 2 is fixedly connected to the side wall of the pressure vessel 1. A locking sleeve 3 is fixedly connected to the end of the connecting nozzle 2. A threaded sealing plug 4 is threadedly connected to the inner side of the connecting nozzle 2. The threaded sealing plug 4 is slidably connected to the locking sleeve 3. A rotating bracket 5, made of plastic, is fixedly connected to the threaded sealing plug 4. The rotating bracket 5 facilitates the tightening of the threaded sealing plug 4.

[0021] Reference Figure 3 The threaded sealing plug 4 has a locating pin 6 internally slidably connected to it. The locating pin 6 is inserted into the locking sleeve 3. A spring 7 is installed inside the threaded sealing plug 4. One end of the spring 7 is fixedly connected to the locating pin 6, and the other end of the spring 7 is fixedly connected to the inner surface of the threaded sealing plug 4. The spring 7 allows the elastic force to be applied to the locating pin 6, ensuring that it is always inserted into the locking sleeve 3. A lever 8 is fixedly connected to the pin body of the locating pin 6, and the lever 8 is slidably connected to the threaded sealing plug 4.

[0022] Reference Figure 3 A square rod 9 is slidably connected to the center of the threaded sealing plug 4. A connecting strip 10 is fixedly connected to the end of the square rod 9. The square rod 9 is square in shape, and the square rod 9 and the connecting strip 10 are an integral part of the mechanism. By setting the square rod 9 to a square shape, rotation can be prevented. Both ends of the connecting strip 10 are fixedly connected to pressure sleeves 11, which are slidably sleeved with the lever 8. A second spring 12 is set inside the center of the threaded sealing plug 4. One end of the second spring 12 is fixedly connected to the square rod 9, and the other end of the second spring 12 is fixedly connected to the inner surface of the threaded sealing plug 4. The setting of the second spring 12 can apply a reaction force to the square rod 9. A ball bearing 13 is set on the rod body of the square rod 9, and the ball bearing 13 is in contact with the inner surface of the threaded sealing plug 4. The setting of the ball bearing 13 can reduce the relative friction between the square rod 9 and the threaded sealing plug 4.

[0023] The specific implementation process of this utility model is as follows: In use, firstly, pull the connecting strip 10 outwards. The connecting strip 10 drives the square rod 9 to slide within the threaded sealing plug 4, and stretches the second spring 12. Furthermore, the two pressure sleeves 11 at both ends of the connecting strip 10 disengage from the two levers 8 respectively. Then, pull the positioning pin 6 through the lever 8, causing it to retract into the threaded sealing plug 4, while simultaneously compressing the first spring 7. Then, maintaining the state of the positioning pin 6, the threaded sealing plug 4 is screwed into the unused connecting nozzle 2 on the pressure vessel 1 via the rotating frame 5. After the threaded sealing plug 4 is screwed into place, the lever 8 is released. The positioning pin 6 will return to its original position under the action of the spring 7 and insert into the locking sleeve 3. This completes the locking of the threaded sealing plug 4 and improves its sealing performance. In addition, the connecting strip 10 is released. The connecting strip 10 returns to its original position under the action of the spring 12, and the pressure sleeve 11 on the connecting strip 10 is respectively fitted onto the two levers 8 to lock the levers 8. This can prevent the levers 8 from loosening with the positioning pin 6 and further ensure the stability of the threaded sealing plug 4 installation.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A self-locking clamping positioning pin structure, comprising a pressure vessel (1), characterized in that, The pressure vessel (1) is fixedly connected to a connecting nozzle (2), and a locking sleeve (3) is fixedly connected to the end of the connecting nozzle (2). A threaded sealing plug (4) is threadedly connected to the inside of the connecting nozzle (2). The threaded sealing plug (4) is slidably connected to the locking sleeve (3). A positioning pin (6) is slidably connected inside the threaded sealing plug (4). The positioning pin (6) is inserted into the locking sleeve (3). A spring (7) is provided inside the threaded sealing plug (4). A lever (8) is fixedly connected to the pin body of the positioning pin (6). The lever (8) is slidably connected to the threaded sealing plug (4). A square rod (9) is slidably connected inside the center of the threaded sealing plug (4). A connecting strip (10) is fixedly connected to the end of the square rod (9). A pressure sleeve (11) is fixedly connected to both ends of the connecting strip (10). The pressure sleeve (11) is slidably sleeved with the lever (8). A spring (12) is provided inside the center of the threaded sealing plug (4).

2. The self-locking clamping positioning pin structure according to claim 1, characterized in that, A rotating frame (5) is fixedly connected to the threaded sealing plug (4), and the rotating frame (5) is made of plastic.

3. The self-locking clamping positioning pin structure according to claim 1, characterized in that, One end of the spring (7) is fixedly connected to the positioning pin (6), and the other end of the spring (7) is fixedly connected to the inner surface of the threaded sealing plug (4).

4. The self-locking clamping positioning pin structure according to claim 1, characterized in that, The square rod (9) is provided with a ball (13) on its body, and the ball (13) is in contact with the inner surface of the threaded sealing plug (4).

5. The self-locking clamping positioning pin structure according to claim 1, characterized in that, The square rod (9) is square in shape, and the square rod (9) and the connecting strip (10) are an integral mechanism.

6. The self-locking clamping positioning pin structure according to claim 1, characterized in that, One end of the second spring (12) is fixedly connected to the square rod (9), and the other end of the second spring (12) is fixedly connected to the inner surface of the threaded sealing plug (4).

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