CN218882718U

CN218882718U - Vice fastening structure of bolted connection

Info

Publication number: CN218882718U
Application number: CN202320201789.1U
Authority: CN
Inventors: 吴忠江; 刘俊峰; 窦从原
Original assignee: Tianjin Xingzhi Metal Products Co ltd
Current assignee: Tianjin Dagang District Tianyuan Cable Bridge Frame Factory
Priority date: 2023-02-13
Filing date: 2023-02-13
Publication date: 2023-04-18
Anticipated expiration: 2033-02-13

Abstract

The utility model discloses a bolt connection pair fastening structure, which belongs to the technical field of bolts and aims at solving the problem that the fastening stability between a fastening bolt and a fastening nut is difficult to meet the use requirement when a clearance fit exists between a preset mounting hole and the bolt; the utility model discloses a fastening bolt carries out the screw fastening with fastening nut and handles, the clamping bar moves towards the ring channel inner wall in step, through the reverse action of positioning sleeve to elasticity extrusion sleeve, make elasticity extrusion sleeve take place to carry out small elastic deformation towards the bottom outside, thereby improve the laminating contact surface of elasticity extrusion sleeve to reserving the mounting hole inner wall, along with fastening bolt's small width rotation, the clamping bar closely presss from both sides tight processing with the inner wall of ring channel, thereby further improve the fastening effect to fastening bolt and fastening nut, its user demand has effectively been satisfied.

Description

Vice fastening structure of bolted connection

Technical Field

The utility model belongs to the technical field of the bolt, concretely relates to vice fastening structure of bolted connection.

Background

At present, in some equipment installation processes, the equipment body or other structural accessories need to be directly contacted and connected with the ground or a wall body and fixed on the ground or the wall body. The common connection method is to pre-punch a hole on the ground or a wall body, then put a shell and an expansion head of an expansion bolt, and then fix the expansion bolt and the expansion head by using a screw and a gasket.

When punching on the basis, if the material of basis is very loose or the drill bit diameter of usefulness of punching is bigger than normal, will lead to in fact forming clearance fit between this hole and the bolt shell, the bolt among the prior art is at the in-process of installation, because countersunk head bolt's head characteristic, often can appear the phenomenon of toppling when installing in the hole, under this condition, the bolt-up just is difficult, because the contact site is limited moreover, therefore the firmness is not enough.

Therefore, a fastening structure of a bolt connecting pair is needed, and the problem that the fastening stability between a fastening bolt and a fastening nut is difficult to meet the use requirement when a gap is matched between a preset mounting hole and the bolt in the prior art is solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vice fastening structure of bolted connection to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a vice fastening structure of bolted connection, includes fastening bolt, fastening bolt's bottom surface threaded connection has fastening nut, fastening nut's top surface integrated into one piece has the ring collar, the sliding positioning sleeve that has cup jointed of the top surface of ring collar, fastening bolt's top bottom surface laminating is provided with the installation backing ring, the installation backing ring with be provided with elasticity extrusion sleeve between positioning sleeve's the opposite face, three logical groove that is evenly distributed is seted up to elasticity extrusion sleeve's surface, fastening bolt's bottom surface has seted up the ring channel, fastening nut's surface is provided with the clamping component that ring channel inner wall contacted.

What need explain in the scheme is, clamping unit includes that three mounting groove that is the symmetric distribution, and is three the mounting groove is all seted up in fastening nut's surface, every the inner wall of mounting groove all slides and runs through the tight pole of clamp that has the extension to ring channel internal surface, the inside of mounting groove be provided with the tight ejector pad of clamp that the tight pole outer end is fixed mutually, the surface of clamp be provided with press from both sides tight ejector pad with the fixed spring of extruding of mounting groove opposite face, every the laminating of the top surface of pressing from both sides tight ejector pad be provided with the fixed slider of pressing mutually of position sleeve top bottom surface.

It is worth further saying that the outer surface of the top of the clamping push block is an inclined slope surface, the outer surface of the bottom of the clamping push block and the adjacent outer surface of the fastening nut are located on the same vertical plane, and the contact surface of the pressing slide block and the clamping push block is an inclined surface matched with each other.

It should be further noted that the bottom end of the fastening bolt is arranged in a circular truncated cone shape, the annular groove is arranged in the circular truncated cone-shaped area of the fastening bolt, and the vertical section of the annular groove is arranged in an incomplete elliptical shape.

As a preferred embodiment, the top surface of the positioning sleeve located between two adjacent through grooves is arranged in an inclined slope, and the contact surface between the bottom surface of the elastic extrusion sleeve and the positioning sleeve is an inclined surface matched with the contact surface.

As a preferred embodiment, three limiting rods are fixed on the bottom surface of the positioning sleeve, the limiting rods are symmetrically distributed, a limiting groove matched with the limiting rods is formed in the outer surface of the fastening nut, and the limiting groove is located between two adjacent mounting grooves.

Compared with the prior art, the utility model provides a pair of vice fastening structure of bolted connection includes following beneficial effect at least:

(1) Through the installation of pegging graft of elasticity extrusion sleeve to reserving mounting hole department, fastening bolt's screw is screwed up, make fastening bolt and fastening nut carry out the screw thread fastening and handle, clamping bar moves towards ring channel inner wall in step, through the reverse action of positioning sleeve to elasticity extrusion sleeve, make elasticity extrusion sleeve take place to carry out small elastic deformation towards the bottom outside, thereby improve the laminating contact surface of elasticity extrusion sleeve to reserving the mounting hole inner wall, thereby improve the fastening effect to fastening bolt and fastening nut again, simultaneously along with fastening bolt's small amplitude rotates, clamping bar carries out inseparable clamping with the inner wall of ring channel and handles, thereby further improve the fastening effect to fastening bolt and fastening nut, effectively satisfied its user demand.

(2) The grafting installation of gag lever post and spacing groove, cooperation annular sleeve and the preliminary slip butt joint processing of position sleeve, through pressing down the slider and pressing from both sides tight ejector pad to the installation of fixing a position sleeve once more, further improve position sleeve and fastening nut's installation stability simultaneously to after elasticity extrusion sleeve takes place the deformation, form inseparable block installation between gag lever post and the spacing groove, thereby ensured fastening effect of fastening bolt and fastening nut to a certain extent.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the split structure of the positioning sleeve and the elastic extrusion sleeve of the present invention;

FIG. 3 is a schematic view of the internal structure of the fastening nut of the present invention;

fig. 4 is an enlarged schematic structural diagram of the area a in fig. 3 according to the present invention.

In the figure: 1. fastening a bolt; 2. fastening a nut; 3. an annular sleeve; 4. a positioning sleeve; 5. installing a backing ring; 6. an elastic extrusion sleeve; 7. a through groove; 8. an annular groove; 9. a clamping assembly; 91. mounting grooves; 92. a clamping lever; 93. clamping the push block; 94. extruding a spring; 95. pressing the slider; 10. a limiting rod; 11. a limiting groove.

Detailed Description

The present invention will be further described with reference to the following examples.

Please refer to fig. 1-4, the utility model provides a vice fastening structure of bolted connection, including fastening bolt 1, fastening bolt 1's bottom surface threaded connection has fastening nut 2, fastening nut 2's top surface integrated into one piece has annular cover 3, the top surface slip of annular cover 3 has cup jointed position sleeve 4, fastening bolt 1's the laminating of top bottom surface is provided with mounting pad ring 5, be provided with elastic extrusion sleeve 6 between mounting pad ring 5 and position sleeve 4's the opposite face, elastic extrusion sleeve 6's surface is seted up three logical groove 7 that is evenly distributed, fastening bolt 1's bottom surface has seted up ring channel 8, fastening nut 2's surface is provided with the clamping component 9 that ring channel 8 inner wall contacted, wherein elastic extrusion reserved sleeve 6 and the reservation mounting hole size looks adaptation of the article of treating fastening processing, thereby be convenient for fastening bolt 1 drives elastic extrusion sleeve 6 and inserts to reserving the mounting hole in, be provided with the preinstall hole that provides position sleeve 4 and fastening nut 2 on another connecting piece, screw through fastening bolt 1 and fastening nut 2, thereby realize the fastening bolt 4 and realize the fastening sleeve and carry out of reverse extrusion effect from elastic extrusion sleeve and fastening bolt 2, thereby the fastening bolt inner wall deformation.

Further as shown in fig. 1, fig. 2 and fig. 4, it is worth specifically explaining that the clamping assembly 9 includes three mounting grooves 91 which are symmetrically distributed, the three mounting grooves 91 are all opened on the outer surface of the fastening nut 2, the inner wall of each mounting groove 91 is penetrated with a clamping rod 92 which extends to the inner surface of the annular groove 8 in a sliding manner, a clamping push block 93 which is fixed to the outer end of the clamping rod 92 is arranged inside the mounting groove 91, an extruding spring 94 which is fixed to the opposite surfaces of the clamping push block 93 and the mounting groove 91 is arranged on the outer surface of the clamping rod 92, and a pressing slider 95 which is fixed to the bottom surface of the top of the positioning sleeve 4 is arranged on the outer surface of the top of each clamping push block 93 in an attaching manner.

As further shown in fig. 1, fig. 2 and fig. 4, it is worth specifically explaining that the outer surface of the top of the clamping push block 93 is an inclined slope, the outer surface of the bottom of the clamping push block 93 and the adjacent outer surface of the fastening nut 2 are located on the same vertical plane, and the contact surface between the pressing slider 95 and the clamping push block 93 is an inclined surface matched with each other.

Further as shown in fig. 2 and fig. 3, worth specifically explaining is that, the top surface that the position sleeve 4 is located between two adjacent logical grooves 7 is the domatic setting of slope, the bottom surface of elasticity extrusion sleeve 6 is the inclined plane of looks adaptation with the contact surface of position sleeve 4, the setting on 4 inclined planes of position sleeve, be convenient for its and elasticity extrusion sleeve 6 inclined plane contact effect, thereby the realization is outwards deformed the processing to the bottom of elasticity extrusion sleeve 6, then extrude the laminating processing to reserving the mounting hole, thereby guarantee fastening bolt 1 and fastening nut 2's fastening performance.

Further as shown in fig. 2 and fig. 4, it is worth specifically explaining that the bottom end of the fastening bolt 1 is arranged in a circular truncated cone shape, the annular groove 8 is arranged in a circular truncated cone-shaped area of the fastening bolt 1, the vertical section of the annular groove 8 is arranged in an incomplete elliptical shape, and the annular groove 8 is arranged in a shape such that when the clamping rod 92 moves towards the center of the fastening nut 2, the annular groove 8 rotates through the screw of the fastening bolt 1, so that when the clamping rod 92 is not in clamping contact with the inner wall of the annular groove 8, the fastening bolt 1 can rotate in a small amplitude, so that the elastic extrusion sleeve 6 performs elastic extrusion through the positioning sleeve 4 to generate outward deformation at the bottom, and when the fastening bolt 1 is screwed still, the clamping rod 92 at this time and the inner wall of the annular groove 8 are tightly clamped.

The scheme has the following working processes: when fastening processing is carried out by utilizing the fastening bolt 1 and the fastening nut 2, according to the diameter size of the reserved mounting hole, an elastic extrusion sleeve 6 matched with the diameter size of the reserved mounting hole is selected, then the positioning sleeve 4 is inserted and mounted on the outer surface of the annular sleeve 3 through the guiding and positioning action of the annular sleeve 3, the primary mounting processing of the positioning sleeve 4 and the fastening nut 2 is formed, through the elastic action of an extrusion spring, the clamping rod 92 drives the clamping push block 93 to move outwards, so that the outer surface of the bottom of the clamping push block 93 moves towards the outer side of the fastening nut 2, then the positioning sleeve 4 and the fastening nut 2 are inserted to the bottom of the reserved mounting hole, at the moment, the mounting backing ring 5 is sleeved in the fastening bolt 1, and the slope of the elastic extrusion sleeve 6 and the positioning sleeve 4 are aligned, thereby, the fastening bolt 1 is inserted into the reserved mounting hole through the mounting backing ring 5 and the elastic extrusion sleeve 6 until the bottom end of the fastening bolt 1 contacts with the inside of the fastening nut 2, then the fastening bolt 1 is screwed by means of a screwing tool, so that the elastic extrusion sleeve 6 moves downwards until the elastic extrusion sleeve contacts with the positioning sleeve 4, the pressing slider 95 is synchronously driven to move downwards to perform inclined plane extrusion on the clamping push block 93, the clamping push block 93 drives the clamping rod 92 to move inwards in the fastening nut 2 through the limiting effect of the clamping rod 92, so that the clamping rod 92 synchronously moves into the annular groove 8 and the inner wall of the annular groove 8 in the process of screwing the fastening bolt 1, when the clamping rod 92 does not perform clamping treatment with the inner wall of the annular groove 8, because the depth of the annular groove 8 is larger than the diameter of the clamping rod 92, when fastening bolt 1 is screwed and micro-angle rotation occurs, the inclined slope of positioning sleeve 4 generates elastic extrusion to the adjacent through groove 7 section of elastic extrusion sleeve 6, so that elastic extrusion sleeve 6 elastically extrudes the inner wall of the reserved mounting hole, and when fastening bolt 1 and fastening nut 2 are screwed, elastic extrusion sleeve 6 elastically extrudes and fits the inner wall of the reserved mounting hole, and when fastening bolt 1 is screwed still, clamping rod 92 and the inner wall of annular groove 8 are tightly clamped, so that the fastening effect of fastening bolt 1 can be improved.

According to the working process, the following steps are carried out: through the installation of pegging graft of elasticity extrusion sleeve 6 to reserving mounting hole department, fastening bolt 1's screw is screwed up, make fastening bolt 1 and fastening nut 2 carry out the screw thread fastening and handle, press from both sides tight pole 92 and move towards ring channel 8 inner wall in step, through the reverse action of positioning sleeve 4 to elasticity extrusion sleeve 6, make elasticity extrusion sleeve 6 take place to carry out small elastic deformation towards the bottom outside, thereby improve the laminating contact surface of elasticity extrusion sleeve 6 to reserving the mounting hole inner wall, thereby improve the fastening effect to fastening bolt 1 and fastening nut 2 once more, rotate along with fastening bolt 1's small amplitude simultaneously, press from both sides tight processing with ring channel 8's inner wall closely, thereby further improve the fastening effect to fastening bolt 1 and fastening nut 2, effectively satisfied its user demand.

Further as shown in fig. 1 and fig. 2, it is worth specifically explaining that, the bottom surface of the positioning sleeve 4 is fixed with three limiting rods 10 which are symmetrically distributed, the outer surface of the fastening nut 2 is provided with a limiting groove 11 matched with the limiting rod 10, the limiting groove 11 is located between two adjacent mounting grooves 91, the limiting rod 10 and the limiting groove 11 are installed in an inserting manner, the annular sleeve 3 and the positioning sleeve 4 are matched for preliminary sliding butt joint treatment, and meanwhile, the positioning sleeve 4 is installed in a secondary positioning manner by pressing the sliding block 95 and the clamping push block 93, so that the installation stability of the positioning sleeve 4 and the fastening nut 2 is further improved, and after the elastic extrusion sleeve 6 deforms, tight clamping installation is formed between the limiting rod 10 and the limiting groove 11, thereby ensuring the fastening effect of the fastening bolt 1 and the fastening nut 2 to a certain extent.

To sum up: the positioning sleeve 4 and the fastening nut 2 are limited by preliminary sliding of the annular groove 8, the positioning sleeve 4 is positioned and installed again by the pressing slider 95 and the clamping push block 93, and the limiting rod 10 and the limiting groove 11 are tightly clamped and installed, so that the connection stability of the positioning sleeve 4 and the fastening nut 2 is improved; through the installation of pegging graft of elasticity extrusion sleeve 6 to reserving mounting hole department, clamping rod 92 moves towards 8 inner walls of ring channel in step, through the reverse action of positioning sleeve 4 to elasticity extrusion sleeve 6, make elasticity extrusion sleeve 6 take place to carry out small elastic deformation towards the bottom outside, thereby improve the laminating contact surface of elasticity extrusion sleeve 6 to reserving the mounting hole inner wall, thereby improve the fastening effect to fastening bolt 1 and fastening nut 2 once more, rotate along with fastening bolt 1's small-amplitude simultaneously, clamping rod 92 carries out inseparable clamping processing with ring channel 8's inner wall, thereby further improve the fastening effect to fastening bolt 1 and fastening nut 2, effectively satisfied its user demand.

Claims

1. The utility model provides a vice fastening structure of bolted connection, includes fastening bolt (1), its characterized in that, the bottom surface threaded connection of fastening bolt (1) has fastening nut (2), the top surface integrated into one piece of fastening nut (2) has annular cover (3), positioning sleeve (4) have been cup jointed in the top surface slip of annular cover (3), the laminating of top bottom surface of fastening bolt (1) is provided with installation backing ring (5), installation backing ring (5) with be provided with elasticity extrusion sleeve (6) between the opposite face of positioning sleeve (4), three logical groove (7) that are evenly distributed have been seted up to the surface of elasticity extrusion sleeve (6), ring channel (8) have been seted up to the bottom surface of fastening bolt (1), the surface of fastening nut (2) is provided with clamping component (9) that ring channel (8) inner wall contacted.

2. The bolt joint pair fastening structure according to claim 1, wherein: clamping unit (9) are including three mounting groove (91) that are the symmetric distribution, and are three mounting groove (91) are all seted up in the surface of fastening nut (2), every the inner wall of mounting groove (91) all slides and runs through and has extended to the tight pole (92) of clamp of ring channel (8) internal surface, the inside of mounting groove (91) be provided with press from both sides tight pole (92) outer end fixed clamp push block (93) mutually, the surface of pressing from both sides tight pole (92) be provided with press from both sides tight push block (93) with mounting groove (91) fixed extrusion spring (94) of opposite face, every the laminating of the top surface of pressing from both sides tight push block (93) be provided with location sleeve (4) top bottom surface is fixed mutually presses slider (95).

3. A bolt joint pair fastening structure according to claim 2, wherein: the outer surface of the top of the clamping push block (93) is an inclined slope surface, the outer surface of the bottom of the clamping push block (93) and the adjacent outer surface of the fastening nut (2) are located on the same vertical plane, and the contact surface of the pressing slide block (95) and the clamping push block (93) is an inclined plane matched with each other.

4. The fastening structure of a bolt connection pair according to claim 1, characterized in that: the bottom of fastening bolt (1) is the setting of round platform form, ring channel (8) set up in the round platform form region of fastening bolt (1), the vertical cross-section of ring channel (8) is the setting of incomplete ellipse form.

5. The bolt joint pair fastening structure according to claim 1, wherein: the top surface of the positioning sleeve (4) between the two adjacent through grooves (7) is an inclined slope surface, and the contact surface of the bottom surface of the elastic extrusion sleeve (6) and the positioning sleeve (4) is an inclined plane matched with each other.

6. The fastening structure of a bolt connection pair according to claim 2, characterized in that: the bottom surface of position sleeve (4) is fixed with three gag lever post (10) that are the symmetric distribution, the surface of fastening nut (2) seted up with gag lever post (10) matched with spacing groove (11), spacing groove (11) are located adjacent two between mounting groove (91).