CN216241745U

CN216241745U - High-strength bolt

Info

Publication number: CN216241745U
Application number: CN202122801235.9U
Authority: CN
Inventors: 朱惠明; 江桂英
Original assignee: Wenling Benlong Machinery Co ltd
Current assignee: Wenling Benlong Machinery Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-04-08
Anticipated expiration: 2031-11-16

Abstract

The utility model provides a high-strength bolt which comprises a high-strength bolt body, wherein the high-strength bolt body consists of a threaded rod and a bolt head, threaded holes are formed in two ends of the threaded rod, a fixing screw rod is fixedly arranged in the middle of the bottom end of the bolt head and in threaded connection with the threaded holes, a connecting ring is fixedly arranged on the side of the bottom end of the bolt head, cavities are formed in two sides of the inner wall of the connecting ring, limiting rods are inserted and connected into the two cavities, and limiting rings and reset springs are respectively sleeved and connected on the surfaces of the limiting rods. This high strength bolt body is made by threaded rod and bolt head concatenation, through set screw and screw hole threaded connection between bolt head and the threaded rod to inlay through gag lever post and arc spacing groove and establish fixedly, make things convenient for the bolt head to dismantle, the bolt head can be according to actual demand change not unidimensional and the bolt head of different shapes, improves the practicality of high strength bolt body.

Description

High-strength bolt

Technical Field

The utility model belongs to the technical field of fasteners, relates to a bolt, and particularly relates to a high-strength bolt.

Background

Bolts made of high strength steel or requiring a large preload force are referred to as high strength bolts. High strength bolt is used for bridge, rail, high pressure and the connection of extra-high pressure equipment more, and the fracture of this kind of bolt is mostly brittle fracture, is applied to the high strength bolt on the extra-high pressure equipment moreover, in order to guarantee the sealed of container, need exert great prestressing force.

At present high strength bolt in the in-process of production, bolt head and threaded rod are integrated into one piece, and the length of bolt also is the specification and size of setting for, and in the use, the bolt head can't be changed, and length also can't be adjusted, influences high strength bolt's practicality.

Disclosure of Invention

The utility model aims to provide a high-strength bolt, which solves the problems that in the production process of the conventional high-strength bolt in the background art, a bolt head and a threaded rod are integrally formed, the length of the bolt is also a set specification and size, the bolt head cannot be replaced in the use process, and the length cannot be adjusted.

The purpose of the utility model can be realized by the following technical scheme: a high-strength bolt comprises a high-strength bolt body, wherein the high-strength bolt body consists of a threaded rod and a bolt head, threaded holes are respectively arranged at the two ends of the threaded rod, a fixed screw is fixedly arranged at the middle part of the bottom end of the bolt head, the fixed screw rod is in threaded connection with the threaded hole, the side of the bottom end of the bolt head is fixedly provided with a connecting ferrule, cavities are respectively arranged on both sides of the inner wall of the connecting ferrule, limiting rods are respectively inserted and connected in the two cavities, the surfaces of the limiting rods are respectively sleeved and connected with a limiting ring and a reset spring, the limit ring and the reset spring are both arranged in the cavity, one end of the reset spring is fixedly connected with one side of the limit ring, the other end of the reset spring is fixedly connected with the inner wall of the cavity, two arc-shaped limiting grooves are formed in the joint of the threaded rod and the connecting ring, and one ends of the two limiting rods are embedded in the arc-shaped limiting grooves and connected.

In foretell high strength bolt, the threaded rod comprises many quarter butts and connecting screw, and is a plurality of the screw has all been seted up at the both ends of quarter butt, adjacent two threaded connection has connecting screw between the quarter butt.

In the high-strength bolt, the top end of the bolt head is provided with a strip-shaped sliding groove.

In the high-strength bolt described above, the bolt head is hexagonal.

In the high-strength bolt described above, the dimension at the tip of the threaded rod matches the inner diameter of the connection ferrule.

In the above high-strength bolt, the high-strength bolt body is made of a 45 # steel material.

Compared with the prior art, the utility model has the beneficial effects that:

1. this high strength bolt's high strength bolt body is made by threaded rod and bolt head concatenation, through set screw and screw hole threaded connection between bolt head and the threaded rod to inlay through gag lever post and arc spacing groove and establish fixedly, make things convenient for the bolt head to dismantle, the bolt head can be according to actual demand change not unidimensional and the bolt head of different shapes, has improved the practicality of high strength bolt body.

2. This high strength bolt's high strength bolt body's threaded rod position is made by many quarter butts and connecting screw concatenation, can realize the length adjustment of threaded rod, is convenient for realize that the high strength bolt body reaches different length and uses, has improved the practicality of high strength bolt body.

Drawings

Fig. 1 is a schematic structural view of the high-strength bolt.

Fig. 2 is a schematic view of the connection structure of the bolt head and the threaded shank in the high-strength bolt.

Fig. 3 is an enlarged view of a portion a of the circle in fig. 2.

Fig. 4 is a schematic structural view of the high-strength bolt at the connection screw.

Fig. 5 is a schematic structural view of the bolt head in the high-strength bolt of the present invention.

In the figure, 1, a high-strength bolt body; 2. a threaded rod; 3. a bolt head; 4. a connecting ferrule; 5. a strip-shaped chute; 6. a threaded hole; 7. fixing the screw rod; 8. an arc-shaped limiting groove; 9. a cavity; 10. a limiting rod; 11. a return spring; 12. a limiting ring; 13. and connecting the screw rod.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2, 3, 4 and 5, the high-strength bolt comprises a high-strength bolt body 1, the high-strength bolt body 1 is composed of a threaded rod 2 and a bolt head 3, both ends of the threaded rod 2 are respectively provided with a threaded hole 6, a fixing screw 7 is fixedly arranged in the middle of the bottom end of the bolt head 3, the fixing screw 7 is in threaded connection with the threaded hole 6, a connecting ring 4 is fixedly arranged on the side of the bottom end of the bolt head 3, both sides of the inner wall of the connecting ring 4 are respectively provided with a cavity 9, limiting rods 10 are respectively inserted and connected in the two cavities 9, a limiting ring 12 and a return spring 11 are respectively sleeved and connected on the surface of the limiting rod 10, the limiting ring 12 and the return spring 11 are respectively arranged in the cavities 9, one end of the return spring 11 is fixedly connected with one side of the limiting ring 12, the other end of the return spring 11 is fixedly connected with the inner wall of the cavity 9, two arc-shaped limiting grooves 8 are arranged at the joint of the threaded rod 2 and the connecting ring 4, the one end of two gag lever posts 10 inlays with arc spacing groove 8 and establishes and be connected, and this high strength bolt body 1 is made by threaded rod 2 and the concatenation of bolt head 3, through fixing screw 7 and the 6 threaded connection of screw hole between bolt head 3 and the threaded rod 2 to inlay through gag lever post 10 and arc spacing groove 8 and establish fixedly, make things convenient for bolt head 3 to dismantle, bolt head 3 can change the bolt head 3 of unidimensional and different shapes according to actual demand, improves high strength bolt body 1's practicality.

Further saying, threaded rod 2 comprises many quarter butts and connecting screw 13, and the screw has all been seted up at the both ends of a plurality of quarter butts, and threaded connection has connecting screw 13 between two adjacent quarter butts, is convenient for assemble threaded rod 2 of different length, and bar spout 5 has been seted up on the top of bolt head 3, and bolt head 3 is the hex horn shape, the size of 2 end departments of threaded rod and the internal diameter phase-match of adapter ring 4, and high strength bolt body 1 is made by 45 steel.

When this high strength bolt of production, at first assemble threaded rod 2 according to actual need, pass through connecting screw 13 with many quarter butts and connect, threaded rod 2 that preparation needs certain length, select bolt head 3 and the assembly of threaded rod 2 of certain shape and size after that, with fixing screw 7 of 3 bottoms of bolt head and the 6 threaded connection of screw hole on 2 tops of threaded rod, and promote gag lever post 10 through reset spring 11 and inlay with arc spacing groove 8 and establish, accomplish bolt head 3 and the assembly of threaded rod 2, assembled high strength bolt body 1 adapts to the length that needs and the bolt head 3 that needs, high strength bolt body 1's practicality has been improved.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The high-strength bolt comprises a high-strength bolt body (1) and is characterized in that the high-strength bolt body (1) is composed of a threaded rod (2) and a bolt head (3), threaded holes (6) are formed in two ends of the threaded rod (2), a fixing screw (7) is fixedly arranged in the middle of the bottom end of the bolt head (3), the fixing screw (7) is in threaded connection with the threaded holes (6), a connecting ring (4) is fixedly arranged on the side of the bottom end of the bolt head (3), cavities (9) are formed in two sides of the inner wall of the connecting ring (4), limiting rods (10) are alternately connected in the two cavities (9), a limiting ring (12) and a reset spring (11) are respectively sleeved on the surface of each limiting rod (10), and the limiting ring (12) and the reset spring (11) are arranged in the cavities (9), one end of the reset spring (11) is fixedly connected with one side of the limiting ring (12), the other end of the reset spring (11) is fixedly connected with the inner wall of the cavity (9), two arc-shaped limiting grooves (8) are formed in the joint of the threaded rod (2) and the connecting ring (4), and the limiting rods (10) are connected with the arc-shaped limiting grooves (8) in an embedded mode.

2. The high strength bolt of claim 1, wherein: threaded rod (2) comprise many quarter butts and connecting screw (13), and is a plurality of the screw has all been seted up at the both ends of quarter butt, adjacent two threaded connection has connecting screw (13) between the quarter butt.

3. The high strength bolt of claim 1, wherein: the top end of the bolt head (3) is provided with a strip-shaped sliding groove (5).

4. The high strength bolt of claim 1, wherein: the bolt head (3) is in a hexagonal shape.

5. The high strength bolt of claim 1, wherein: the size of the end of the threaded rod (2) is matched with the inner diameter of the connecting ferrule (4).

6. The high strength bolt of claim 1, wherein: the high-strength bolt body (1) is made of No. 45 steel.