Bolt connecting structure

Abstract

The utility model relates to the technical field of bolt connecting structures, and discloses a bolt connecting structure which comprises a nut body, a bolt body, two fixing mechanisms and two limiting mechanisms, round holes are formed in the centers of the front face and the rear face of the bolt body, and round grooves are formed in the ends, away from the center of the bolt body, of the inner walls of the two round holes. The fixing mechanism comprises a threaded column, a threaded connecting column is fixedly connected to the center of the front end face of the threaded column, a clamping groove is formed in the side, close to the groove, of the front portion of the outer surface of the threaded column, and the limiting mechanism comprises a fixing column and a spring piece. The outer surface of the fixing column is movably sleeved with a pawl, and the side face of one end of the spring piece is fixedly connected to the inner wall of the circular groove. According to the bolt fixing device, the bolt is fixed more firmly through the limiting mechanism, the influence of external factors on bolt fixing is greatly reduced, and operation is quite easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of bolt connection structure technology, and in particular to a bolt connection structure. Background Technology

[0002] Bolted connection refers to the connection method in engineering structures in which two or more parts or components are connected into a whole by bolts. It is mostly used in steel structures. Bolts bear shear force and tensile force at the connection. Generally, bolts are divided into ordinary bolts and high-strength bolts according to their strength grade.

[0003] Existing patent (CN221942956U) discloses a bolt connection structure, including a nut body. The nut body is characterized by: reinforcing components installed on both sides; a threaded groove on one side of the outer wall of each reinforcing component penetrates the nut body and communicates with its interior; a threaded rod is threaded into the threaded groove; a mounting block is rotatably connected to one end of the screw; a limiting block is coaxially fixed to one side of the outer wall of the mounting block; the diameters of the mounting block and the limiting block are both smaller than the diameter of the screw; a knob is coaxially fixed to the other side of the screw; and limiting components are installed on both sides of the nut body, with the two limiting components located outside the two reinforcing components. This invention, by setting reinforcing components, can form a secondary fixation at the connection between the bolt body and the nut body, effectively preventing the connection from loosening due to vibration, thus making the structure more stable. In the above patent, the reinforcing components are fixed and reinforced by a locking strip on the limiting plate engaging with a locking strip on the knob. However, since the limiting plate is located externally, there is a risk that it may be broken by external objects, thus losing its reinforcing ability. Therefore, those skilled in the art have provided a bolted connection structure to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology by proposing a bolt connection structure that makes the bolt fixing more secure, greatly reduces the influence of external factors on the bolt fixing, and is very simple and convenient to operate.

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

[0006] A bolted connection structure includes a nut body, a bolt body, two fixing mechanisms, and two limiting mechanisms. The bolt body has a circular hole at the center of both the front and rear sides. The inner walls of the two circular holes have a circular groove at the end away from the center of the bolt body. The inner walls of the two circular grooves have a groove on the side closer to the outside.

[0007] The fixing mechanism includes a threaded column, and a threaded connecting column is fixedly connected to the center of the front end face of the threaded column. A slot is opened on the outer surface of the threaded column near the groove.

[0008] The limiting mechanism includes a fixed post and a spring plate. A pawl is movably sleeved on the outer surface of the fixed post. One side of the spring plate is fixedly connected to the inner wall of the circular groove, and the other side is fixedly connected to the arc surface of the pawl away from the circular hole. The front and rear ends of the fixed post are fixedly connected to one side of the front and rear inner walls of the circular groove.

[0009] Furthermore, the limiting mechanism is disposed on one side of the circular groove, and the fixing mechanism is disposed in the circular hole.

[0010] Furthermore, the two grooves communicate with the circular hole, and the two circular slots communicate with the circular hole.

[0011] Furthermore, the two grooves are connected to the circular groove, and the outer surface of the nut body is threaded inside the bolt body.

[0012] Furthermore, threaded grooves are provided on the inner walls of both circular holes near the middle, and the threaded connecting column is connected to the threaded grooves on its outer surface.

[0013] Furthermore, a lever is fixedly connected to the upper end face of the pawl, and a cap is threaded onto the outer surface of the threaded connecting post.

[0014] Furthermore, a rubber block is fixedly connected to the rear of the threaded post, and the outer surface of the actuating rod is movably sleeved in the groove.

[0015] This utility model has the following beneficial effects:

[0016] 1. The bolt connection structure proposed in this utility model has a pawl and a spring plate set inside the bolt body, which will not be damaged by the outside and thus cause the connection to loosen. The spring plate and the pawl work together to make the pawl insert into the slot. When the external vibration causes the threaded column to want to rotate counterclockwise, it will be resisted by the pawl and thus cannot rotate counterclockwise, causing the connection to loosen. By moving the pawl with the lever, the connection between the pawl and the slot is released, and the threaded column can rotate counterclockwise to release the reinforcement.

[0017] 2. The present invention proposes a bolt connection structure in which a threaded connecting post is provided on the threaded post, and a cover is threadedly fitted on the outer surface of the threaded connecting post. The cover is used to protect the pawl from external damage. The rubber block is provided with multiple grooves to increase the contact area with the bolt body thread, thereby increasing the friction force and resisting the loosening of the connection due to external vibration. Attached Figure Description

[0018] Figure 1This is an overall isometric schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the nut body structure of this utility model;

[0020] Figure 3 This is a cross-sectional view of the nut body of this utility model;

[0021] Figure 4 This is a schematic diagram of the fixing mechanism structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the threaded column structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the limiting mechanism of this utility model.

[0024] Legend:

[0025] 1. Bolt body; 2. Nut body; 3. Fixing mechanism; 4. Groove; 5. Limiting mechanism; 6. Threaded groove; 7. Circular groove; 8. Circular hole; 301. Rubber block; 302. Threaded post; 303. Slot; 304. Cover; 305. Threaded connecting post; 501. Fixing post; 502. Pawl; 503. Spring plate; 504. Actuating lever. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 An embodiment of this utility model is provided: a bolt connection structure, including a nut body 2, a bolt body 1, two fixing mechanisms 3, and two limiting mechanisms 5. The bolt body 1 has a circular hole 8 at the center of the front and rear sides. The inner wall of the two circular holes 8 is provided with a circular groove 7 at the end away from the center of the bolt body 1. The inner wall of the two circular grooves 7 is provided with a groove 4 on the side of the inner wall near the outside.

[0028] The fixing mechanism 3 is set inside the circular hole 8. The fixing mechanism 3 includes a threaded post 302. A threaded connecting post 305 is fixedly connected to the center of the front end face of the threaded post 302. A slot 303 is opened on the outer surface of the threaded post 302 near the groove 4. Two grooves 4 communicate with the circular hole 8. Two circular grooves 7 communicate with the circular hole 8. Two grooves 4 communicate with the circular grooves 7. The outer surface of the nut body 2 is threaded inside the bolt body 1. Threaded grooves 6 are opened on the inner wall of the two circular holes 8 near the middle. The threaded connecting post 305 is threadedly connected to the threaded grooves 6. A cover 304 is threadedly fitted on the outer surface of the threaded connecting post 305. A rubber block 301 is fixedly connected to the rear of the threaded post 302.

[0029] Specifically, the threaded post 302 is screwed into the round hole 8, so that the threaded post 302 is threadedly connected to the threaded groove 6 inside the round hole 8. The rubber block 301 is pressed against the bolt body 1. The rubber block 301 is provided with multiple grooves to increase the contact area with the threads on the bolt body 1, thereby increasing the friction and resisting the loosening of the connection due to external vibration. Then, the cover 304 is threadedly connected to the threaded connecting post 305 to protect the inside of the round hole 8.

[0030] Reference Figure 1 , Figure 2 ... Figure 3 , Figure 6 The limiting mechanism 5 is located on one side inside the circular groove 7. The limiting mechanism 5 includes a fixed post 501 and a spring plate 503. A pawl 502 is movably sleeved on the outer surface of the fixed post 501. One end of the spring plate 503 is fixedly connected to the inner wall of the circular groove 7, and the other end is fixedly connected to the arc surface of the pawl 502 away from the circular hole 8. The front and rear end faces of the fixed post 501 are fixedly connected to the front and rear inner walls of the circular groove 7. A toggle rod 504 is fixedly connected to the upper end face of the pawl 502, and the outer surface of the toggle rod 504 is movably sleeved in the groove 4.

[0031] Specifically, when the threaded post 302 is screwed into the round hole 8, the pawl 502 is squeezed and retracts into the round groove 7. At the same time, the spring plate 503 deforms. When the threaded post 302 is tightened, the position of the slot 303 will align with the position of the pawl 502. The external force on the pawl 502 disappears, the spring plate 503 returns to its original deformation, allowing the pawl 502 to insert into the slot 303 and provide the threaded post 302 with a reverse resistance force, preventing it from rotating counterclockwise, thus causing it to loosen. The pawl 502 can be moved by the lever 504, which can release the connection between the pawl 502 and the slot 303, allowing the threaded post 302 to be screwed out of the round hole 8, thereby releasing the reinforcement.

[0032] Working principle: The bolt body 1 and the nut body 2 are threaded together. Then, the threaded post 302 is screwed into the round hole 8. After tightening, the groove 303 on the threaded post 302 will be aligned with the position of the pawl 502. The pawl 502 will be inserted into the groove 303, giving the threaded post 302 a reverse resistance force. The threaded post 302 cannot rotate counterclockwise. The rubber block 301 will press against the bolt body 1, thereby completing the reinforcement. The cover 304 is threaded together with the threaded connecting post 305 to protect the inside of the round hole 8.

[0033] Secondly, when removing the reinforcement, disconnect the connection between the cover 304 and the threaded connecting post 305, and by moving the lever 504, disconnect the connection between the pawl 502 and the slot 303. Then, unscrew the threaded post 302 counterclockwise to remove the reinforcement.

[0034] Finally, it should be noted that the above description 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 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A bolted connection structure, comprising a nut body (2), a bolt body (1), two fixing mechanisms (3), and two limiting mechanisms (5), characterized in that: The bolt body (1) has a circular hole (8) at the center of the front and rear sides. The inner wall of the two circular holes (8) is provided with a circular groove (7) at the end away from the center of the bolt body (1). The inner wall of the two circular grooves (7) is provided with a groove (4) on the side close to the outside. The fixing mechanism (3) includes a threaded post (302), and a threaded connecting post (305) is fixedly connected at the center of the front end face of the threaded post (302). A slot (303) is provided on the outer surface of the threaded post (302) on the side that is forward and close to the groove (4). The limiting mechanism (5) includes a fixed post (501) and a spring plate (503). A pawl (502) is movably sleeved on the outer surface of the fixed post (501). One end of the spring plate (503) is fixedly connected to the inner wall of the circular groove (7), and the other end is fixedly connected to the arc surface of the pawl (502) away from the circular hole (8). The front and rear ends of the fixed post (501) are fixedly connected to one side of the front and rear inner walls of the circular groove (7).

2. The bolted connection structure according to claim 1, characterized in that: The limiting mechanism (5) is located on one side of the circular groove (7), and the fixing mechanism (3) is located in the circular hole (8).

3. The bolted connection structure according to claim 1, characterized in that: The two grooves (4) are connected to the circular hole (8), and the two circular grooves (7) are connected to the circular hole (8).

4. The bolted connection structure according to claim 1, characterized in that: The two grooves (4) are connected to the circular groove (7), and the outer surface of the nut body (2) is threaded inside the bolt body (1).

5. A bolted connection structure according to claim 1, characterized in that: The inner walls of the two circular holes (8) are provided with threaded grooves (6) near the middle, and the threaded connecting column (305) is threaded to the threaded grooves (6) on its outer surface.

6. A bolted connection structure according to claim 1, characterized in that: The upper end face of the pawl (502) is fixedly connected to a lever (504), and the outer surface of the threaded connecting post (305) is threaded with a cover (304).

7. A bolted connection structure according to claim 6, characterized in that: A rubber block (301) is fixedly connected to the back of the threaded post (302), and the outer surface of the actuating rod (504) is movably sleeved in the groove (4).

Images