Self-locking one-way tensile bolt

Abstract

The utility model relates to a self-locking type one-way tensile bolt, and aims to solve the technical problems that the existing tensile bolt is generally used in a high-strength environment, but the tensile bolt is fixed only by virtue of friction between threads of the tensile bolt and parts in the high-strength environment and cannot effectively resist stretching, so that the use effect of the tensile bolt is reduced. Comprising a tensile bolt body, an auxiliary mechanism is arranged in the middle of the tensile bolt body, and a set of reinforcing mechanisms are symmetrically arranged in the tensile bolt body; the reinforcing mechanism comprises abutting rods, the abutting rods are clamped in the tensile bolt body, and movable blocks are fixedly connected to the end portions of the planes of the abutting rods, the movable blocks are effectively extruded through downward movement of the auxiliary mechanism, so that the movable blocks are made to horizontally move, the tip ends of the abutting rods can be conveniently moved out of the tensile bolt body, and the tensile bolt is convenient to use. And the tensile bolt body is effectively embedded, clamped and locked with a part connecting surface, so that the connecting tightness and the tensile strength of the tensile bolt body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to a self-locking one-way tensile bolt. Background Art

[0002] A bolt is a mechanical part, a cylindrical threaded fastener used with a nut. It is a type of fastener composed of a head and a screw rod. It needs to cooperate with a nut to be used for fastening and connecting two parts with through holes. This connection form is called bolt connection.

[0003] Existing tensile bolts are generally used in high-strength environments. However, in high-strength environments, relying solely on the friction between its own threads and parts for fixation cannot effectively resist tension, reducing the use effect of the tensile bolt. In view of this, we propose a self-locking one-way tensile bolt. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, meet the actual needs, and provide a self-locking one-way tensile bolt to solve the technical problem that existing tensile bolts are generally used in high-strength environments. However, in high-strength environments, relying solely on the friction between its own threads and parts for fixation cannot effectively resist tension, reducing the use effect of the tensile bolt.

[0005] To achieve the purpose of the utility model, the technical solution adopted by the utility model is: design a self-locking one-way tensile bolt, including a tensile bolt body. An auxiliary mechanism is arranged in the middle of the tensile bolt body, and a group of reinforcement mechanisms are symmetrically arranged inside the tensile bolt body;

[0006] The reinforcement mechanism includes a resisting rod. The resisting rod is clamped inside the tensile bolt body. A movable block is fixedly connected to the flat end of the resisting rod, and a transverse spring is sleeved outside the resisting rod.

[0007] Preferably, the movable block is fan-shaped, and both ends of the transverse spring are respectively connected to the movable block and the tensile bolt body.

[0008] Preferably, the tensile bolt body includes a screw head. A hexagonal rotating block is fixedly connected to the top of the screw head. A screw column is fixedly connected to the bottom end of the screw head, and a circular plate is fixedly arranged inside the screw column.

[0009] Preferably, a hollow groove is formed inside the screw column, and a fixed connection is made between the inner wall of the screw column and the outer wall of the circular plate.

[0010] Preferably, the auxiliary mechanism includes a pressing block. The pressing block is clamped inside the screw head and the hexagonal rotating block. A group of screw rods are symmetrically arranged on both sides inside the screw head. A vertical rod is fixedly connected to the lower end of the pressing block. A ring plate is fixedly sleeved outside the vertical rod. A vertical spring is movably sleeved outside the vertical rod, and a pressing ball is fixedly connected to the bottom end of the vertical rod.

[0011] Preferably, the screw is threadedly connected to the screw head and the pressing block respectively, and the vertical rod at the lower end of the pressing block penetrates through the bottom of the screw head.

[0012] Preferably, the ring plate and the circular plate form an elastic structure through a vertical spring, and the outer wall of the ring plate fits snugly with the inner wall of the stud.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. By the downward movement of the auxiliary mechanism, the present utility model effectively presses a group of movable blocks, so that the group of movable blocks translate, facilitating the tip ends of a group of abutting rods to move out of the tensile bolt body and effectively engaging and locking with the part connection surface, improving the connection tightness and tensile strength of the tensile bolt body.

[0015] 2. In the present utility model, when the pressing block is pressed downward so that the bottom of the pressing block fits against the bottom of the inner groove of the screw head, at this time, the screw is rotated so that its end enters the pressing block and limits the pressing block. At the same time, the vertical rod, the ring plate and the pressing ball move downward with the pressing block, so that the pressing ball contacts the arc surface of the movable block and presses the movable block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the adjustment state structure of the auxiliary mechanism and the reinforcement mechanism of the present utility model;

[0018] Figure 3 is a schematic diagram of the partial cross-sectional structure of the present utility model;

[0019] Figure 4 is a schematic diagram of the partial three-dimensional structure of the present utility model;

[0020] In the figure: 1, tensile bolt body; 2, auxiliary mechanism; 3, reinforcement mechanism;

[0021] 101, screw head; 102, hexagonal rotating block; 103, stud; 104, circular plate;

[0022] 201, pressing block; 202, screw; 203, vertical rod; 204, ring plate; 205, vertical spring; 206, pressing ball;

[0023] 301, abutting rod; 302, movable block; 303, transverse spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0025] A self-locking unidirectional tensile bolt, see Figures 1 to 4 , which includes a tensile bolt body 1. An auxiliary mechanism 2 is provided in the middle of the tensile bolt body 1, and a group of reinforcing mechanisms 3 are symmetrically arranged inside the tensile bolt body 1;

[0026] The reinforcing mechanism 3 includes a resisting rod 301, the resisting rod 301 is clamped inside the tensile bolt body 1, a movable block 302 is fixedly connected to the flat end of the resisting rod 301, and a transverse spring 303 is sleeved outside the resisting rod 301. Among them, the movable block 302 is fan-shaped, and both ends of the transverse spring 303 are respectively connected to the movable block 302 and the tensile bolt body 1. In this utility model, the downward movement of the auxiliary mechanism 2 effectively squeezes a group of movable blocks 302, so that a group of movable blocks 302 translate, facilitating the pointed ends of a group of resisting rods 301 to move out of the inside of the tensile bolt body 1 and effectively fitting and clamping with the part connection surface to lock, improving the connection tightness and tensile strength of the tensile bolt body 1.

[0027] It should be noted that the tensile bolt body 1 includes a screw head 101, a hexagonal rotating block 102 is fixedly connected to the top of the screw head 101, a screw column 103 is fixedly connected to the bottom end of the screw head 101, and a circular plate 104 is fixedly arranged inside the screw column 103. Among them, a hollow groove is formed inside the screw column 103, and a fixed connection is made between the inner wall of the screw column 103 and the outer wall of the circular plate 104.

[0028] It should be explained that the auxiliary mechanism 2 includes a pressing block 201, the pressing block 201 is clamped inside the screw head 101 and the hexagonal rotating block 102, a group of screw rods 202 are symmetrically arranged on both sides inside the screw head 101, and a vertical rod 203 is fixedly connected to the lower end of the pressing block 201. Among them, the screw rods 202 are in threaded connection with the screw head 101 and the pressing block 201 respectively. The vertical rod 203 at the lower end of the pressing block 201 penetrates through the bottom of the screw head 101, an annular plate 204 is fixedly sleeved outside the vertical rod 203, and a vertical spring 205 is movably sleeved outside the vertical rod 203. Further, the annular plate 204 and the circular plate 104 form an elastic structure through the vertical spring 205, the outer wall of the annular plate 204 is matched and fitted with the inner wall of the screw column 103, and a pressing ball 206 is fixedly connected to the bottom end of the vertical rod 203. In this utility model, when the pressing block 201 is pressed downward so that the bottom of the pressing block 201 fits the bottom of the inner groove of the screw head 101, at this time, the screw rod 202 is rotated so that its end enters the inside of the pressing block 201 and limits the pressing block 201. At the same time, the vertical rod 203, the annular plate 204 and the pressing ball 206 move downward with the pressing block 201, so that the pressing ball 206 contacts the arc surface of the movable block 302 and squeezes the movable block 302.

[0029] Working principle: Connect the tensile bolt body 1 with the part in a state where the screw 202 is not in contact with the pressing block 201. Then, press down the pressing block 201 so that the bottom of the pressing block 201 fits the bottom of the inner groove of the screw head 101. At this time, rotate the screw 202 so that its end enters the inside of the pressing block 201 and limits the pressing block 201. At the same time, the vertical rod 203, the ring plate 204 and the pressing ball 206 move down with the pressing block 201, so that the pressing ball 206 contacts the arc surface of the movable block 302 and squeezes the movable block 302. At this time, a group of movable blocks 302 translate, so that the pointed ends of a group of abutting rods 301 move out of the inside of the tensile bolt body 1 and are fitted and clamped with the connection surface of the part, improving the connection tightness and tensile strength of the tensile bolt body 1. When disassembling the tensile bolt body 1, rotate the screw 202 to separate it from the pressing block 201. Affected by the resilience of the vertical spring 205, the ring plate 204 and the pressing block 201 move upward. At the same time, the pressing ball 206 separates from the movable block 302. Affected by the resilience of the transverse spring 303, a group of movable blocks 302 move towards the middle, driving the abutting rods 301 to move into the inside of the stud 103. Then, screw the tensile bolt body 1 to separate it from the part.

[0030] The embodiments disclosed in the present invention are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present invention, they are within the protection scope of the present invention.

Claims

1. A self-locking one-way tensile bolt, characterized in that: It comprises a tension-resistant bolt body (1), an auxiliary mechanism (2) is provided in the middle of the tension-resistant bolt body (1), and a group of reinforcement mechanisms (3) are symmetrically provided inside the tension-resistant bolt body (1); The reinforcing mechanism (3) comprises a push rod (301), the push rod (301) is engaged inside the tension-resistant bolt body (1), a movable block (302) is fixedly connected to the plane end of the push rod (301), and a transverse spring (303) is sleeved outside the push rod (301).

2. A self-locking one-way tensile bolt as claimed in claim 1, characterized in that: The movable block (302) is fan-shaped, and the two ends of the transverse spring (303) are respectively connected to the movable block (302) and the tension-resistant bolt body (1).

3. A self-locking one-way tensile bolt as claimed in claim 1, characterized in that: The tension-resistant bolt body (1) comprises a screw head (101), the top of the screw head (101) is fixedly connected to a hexagonal screw block (102), the bottom of the screw head (101) is fixedly connected to a stud (103), and a circular plate (104) is fixedly provided inside the stud (103).

4. A self-locking one-way tensile bolt as claimed in claim 3, characterized in that: A hollow groove is provided inside the stud (103), and the inner wall of the stud (103) is fixedly connected to the outer wall of the circular plate (104).

5. A self-locking one-way tensile bolt as claimed in claim 3, characterized in that: The auxiliary mechanism (2) comprises a pressing block (201), the pressing block (201) is engaged with the inside of the screw head (101) and the hexagonal rotating block (102), a group of screw rods (202) are symmetrically arranged on both sides of the inside of the screw head (101), the lower end of the pressing block (201) is fixedly connected to a vertical rod (203), the external fixed sleeve of the vertical rod (203) is provided with a ring plate (204), the external movable sleeve of the vertical rod (203) is provided with a vertical spring (205), and the bottom end of the vertical rod (203) is fixedly connected to a pressure ball (206).

6. A self-locking one-way tensile bolt as claimed in claim 5, characterized in that: The screw rod (202) is respectively connected to the screw head (101) and the pressing block (201) by threads, and the vertical rod (203) at the lower end of the pressing block (201) penetrates the bottom of the screw head (101).

7. A self-locking one-way tensile bolt as claimed in claim 5, characterized in that: The annular plate (204) forms an elastic structure with the circular plate (104) via a vertical spring (205), and the outer wall of the annular plate (204) is matched and fitted with the inner wall of the stud (103).

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