CN106594030A - Double-nut-screw type fixing connector based on stretching wedge blocks - Google Patents

Abstract

A double-nut screw-type fixed connector based on an auxetic wedge, comprising a compression bolt, a compression nut, an external pull bolt and at least one fastening pin, the fastening pin is movably arranged on the compression The end of the bolt, the compression nut is screwed to the compression bolt, and the pull bolt is operatively arranged inside the compression bolt, when the auxetic wedge-based double-nut screw type fixed connector is not used , each of the fastening pins does not protrude from the surface of the compression bolt, when using the double nut screw type fixed connector based on the auxetic wedge block, the external tension bolt pushes the compression bolt outwards from the inside of the compression bolt. Fix the pin so that the fastening pin protrudes from the surface of the compression bolt, thereby connecting the two connecting parts.

Description

Double-nut screw type fixed connector based on auxetic wedge

technical field

The invention relates to a double nut screw type fixed connector, which belongs to the technical field of fasteners, in particular to a double nut screw type fixed connector based on an auxetic wedge block, wherein the double nut screw type based on an auxetic wedge block The type fixed connector can be adapted to the connection of connecting pieces with through holes or blind holes, and the double-nut screw type fixed connector based on the auxetic wedge can be used repeatedly.

Background technique

Fasteners are widely used in engineering machinery, engineering construction, and machine assembly. Existing fastening technology has a variety of mechanical fastening connection methods, which can be divided into two categories according to whether the fasteners are detachable: 1. Detachable fasteners include bolt connections, key connections, pin connections, etc. 2. Non-detachable fasteners include rivet connections, welding, gluing, etc. These fastening connection methods have their own advantages and disadvantages, and these fasteners can only be used in one of through holes or blind holes due to the limitations of their mechanical structures. At the same time, there are some phenomena such as easy loosening after connection, poor connection reliability, and cumbersome operation. Therefore, the present invention provides a double-nut screw type fixed connector based on an auxetic wedge to solve the above problems.

Contents of the invention

The object of the present invention is to provide a double-nut screw type fixed connector based on the auxetic wedge, wherein the double-nut screw type fixed connector based on the auxetic wedge can be adapted to the connecting piece with a through hole or a blind hole. connection, and the double-nut screw-type fixed connector based on the auxetic wedge can be reused.

In order to achieve the above object, the technical solution provided by the present invention is a double-nut screw type fixed connector based on an auxetic wedge block, which includes a compression bolt, a compression nut, an external pull bolt and at least one fastening pin, the compression bolt is hollow, the compression bolt is provided with an external thread structure, an internal thread structure and at least one pin hole, and each of the pin holes is arranged at the end of the compression bolt at intervals, and each of the pins The holes are respectively connected to the inside and outside of the compression bolt, each of the fastening pins is movably arranged in each of the pin holes, and the compression nut and the external thread structure of the compression bolt cooperate with each other to make the compression The nut is screwed to the external thread structure of the compression bolt, and the pulling bolt includes a first section structure, a second section structure, a third section structure, a fourth section structure, a fifth section structure and a first section structure. Six-section structure, and the first section structure, the second section structure, the third section structure, the fourth section structure, the fifth section structure and the sixth section structure of the pull bolt are obtained from the pull bolt The front end of the pull bolt is integrally formed to the end, the first section of the external pull bolt is a hexagon socket nut, the second section is a shaft of a certain length, the third section is an external thread structure of a certain length, and the fourth section is a structure of A shaft with a certain length, the fifth segment structure is a conical surface with a certain angle, and the sixth segment structure is a shaft with a certain length. The external pull bolt is operatively arranged inside the compression bolt, and the first pull bolt The external thread structure of the three-section structure cooperates with the internal thread structure of the compression bolt, each of the fastening pins corresponds to the fourth section of the external pull bolt, and each of the fastening pins does not protrude beyond the compression bolt. tighten the outer surface of the bolt, when the pull-out bolt is operated to move outward, each fastening pin corresponds to the sixth-section structure of the pull-out bolt after passing through the fifth-section structure of the pull-out bolt respectively, so as to With the sixth segment structure of the pulling bolt, each fastening pin protrudes from the outer surface of the pressing bolt.

As a further preferred embodiment of the double-nut screw type fixed connector based on the auxetic wedge block of the present invention, the double-nut screw type fixed connector based on the auxetic wedge block includes a collar, and the compression bolt has a clip A ring groove, the collar groove is adjacent to each of the pin holes, the collar is fixed in the collar groove, so as to prevent each of the fastening pins from falling off from each of the pin holes by the collar.

As a further preferred embodiment of the auxetic wedge-based double-nut screw type fixed connector of the present invention, the collar is an elastic metal ring.

As a further preferred embodiment of the double-nut screw type fixed connector based on the auxetic wedge block of the present invention, the double-nut screw type fixed connector based on the auxetic wedge block includes a washer, and the washer is sleeved on the compression bolt , and the washer is adjacent to the compression nut.

As a further preferred embodiment of the double-nut screw type fixed connector based on the auxetic wedge block of the present invention, the compression bolt is provided with a retaining ring groove for the hole, and the double-nut screw type fixed connector based on the auxetic wedge block A retaining ring for the hole is included, and the retaining ring for the hole is arranged in the retaining ring groove for the hole of the compression bolt, so as to limit the outwardly moving position of the pulling bolt by the retaining ring for the hole.

As a further preferred embodiment of the auxetic wedge-based double-nut screw type fixed connector of the present invention, the retaining ring for the hole is an elastic metal ring.

As a further preferred embodiment of the auxetic wedge-based double-nut screw type fixed connector of the present invention, the retaining ring groove for the hole of the compression bolt is adjacent to the internal thread structure of the compression bolt.

As a further preferred embodiment of the auxetic wedge-based double-nut screw type fixed connector of the present invention, the compression bolt has three pin holes, each of which is independent of each other, and the extension of each pin hole The direction and the extension direction of the compression bolt are perpendicular to each other, and the double-nut screw type fixed connector based on the auxetic wedge block includes three fastening pins, each of which is movably arranged in each of the pin holes.

In order to meet the above functions, a double-nut screw-type fixed connector based on an auxetic wedge block is invented this time, which is mainly composed of the compression bolt, the compression nut, the washer, the fastening pin, the external tension bolt and the clip. The ring and the hole are composed of a retaining ring.

The compression bolt is used to connect the connected parts. The front end has a wrench clamping port to facilitate the clamping of the fixed connection parts and parts. The thread of a certain length on the outer surface is used for the compression nut to fasten the connected parts. At the same time, there is a certain The length of the internal thread is used for screwing in and out of the pull bolt, and the upper end of the internal thread is provided with a retaining ring groove for the hole, which is used to place the retaining ring for the hole. There are three pin holes at the end to facilitate the installation of the fastening pin, and the lower end of the pin hole of the pressing bolt is provided with a collar groove to place the collar.

Both the compression nut and the washer are standard parts and are used for fastening the connecting parts.

The fastening pin is an irregular cylinder, and cooperates with the pulling bolt to fasten the connecting piece.

The front end of the external pull bolt is a hexagon socket nut, that is, the first section structure; the second section structure is a shaft of a certain length; the third section structure is an external thread of a certain length; the fourth section structure is a certain length shaft; the sixth section The structure is a shaft with a certain length; the fourth section and the sixth section are connected and transitioned into a conical surface with a certain angle, which is the fifth section.

The collar is a metal ring with certain elasticity, which ensures that the fastening pin will not fall off the pin hole when it expands outward.

The retaining ring for the hole has a certain elastic metal ring to ensure the outward position of the pulling bolt.

The double-nut screw-type fixed connector based on the auxetic wedge is mainly used in two working conditions. When the connecting piece is a blind hole and is pulled out through the pull-out bolt, the structure of the fourth section and the sixth section of the pull-out bolt The tapered surface between the structures will make the fastening pin expand outward, and the fastening pin will withstand the inner wall of the blind hole to generate a certain pressure and friction force, and then use the compression nut to compress the connecting piece to realize being Tight connection of connectors. When the connected part is a through hole and is pulled out through the pulling bolt, the tapered surface between the fourth section structure and the sixth section structure of the pulling bolt will make the fastening pin expand outwards, and the fastening pin The end of the connecting piece will be stuck, and then the compression nut is used to compress the connecting piece to be fastened between the compression nut and the fastening pin, so as to realize the fastening of the connected piece.

The beneficial effects of the double-nut screw type fixed connector based on the auxetic wedge block of the present invention are:

1. The auxetic wedge-based double-nut screw-type fixed connector of the present invention can be used for the connection of connectors with through holes or blind holes, and has a wide range of applications.

2. The auxetic wedge-based double-nut screw type fixed connector of the present invention is simple in structure, easy to operate, reliable, and not easy to loosen.

3. The auxetic wedge-based double-nut screw type fixed connector of the present invention can be used repeatedly to reduce the cost of using the auxetic wedge-based double-nut screw type fixed connector.

4. The double-nut screw-type fixed connector based on the auxetic wedge of the present invention has a wrench clamping port, which is convenient for repeated disassembly and use of the double-nut screw-type fixed connector based on the auxetic wedge, and can improve the working efficiency. efficiency, avoid self-damage to the auxetic wedge-based double-nut screw type fixed connector and improve the service life of the auxetic wedge-based double-nut screw type fixed connector.

5. The auxetic wedge-based double-nut screw type fixed connector of the present invention has simple structure, low cost, large function and easy processing.

6. The auxetic wedge-based double-nut screw type fixed connector of the present invention is reliable in connection, not easy to loosen, simple in operation, capable of fast installation and separation, and good in economy.

Description of drawings

In order to obtain the above and other advantages and features of the present invention, a more particular description of the invention outlined above will be made hereinafter with reference to specific embodiments of the invention shown in the accompanying drawings. It should be understood that these drawings only show typical embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention. By using the accompanying drawings, the present invention will be described and explained more specifically and in detail . In the attached picture:

Fig. 1 is a schematic diagram of the double-nut screw type fixed connector based on the auxetic wedge block.

Fig. 2A is a side view of the double-nut screw type fixed connector based on the auxetic wedge.

Fig. 2B is a cross-sectional view of the double-nut screw type fixed connector based on the auxetic wedge block.

FIG. 3A and FIG. 3B are schematic diagrams of the external pull bolts of the double nut screw type fixed connector based on the auxetic wedge block.

FIG. 4 is a schematic diagram of the auxetic wedge-based double-nut screw type fixed connector used for a connecting piece with a through hole.

Fig. 5 is a schematic diagram of the double-nut screw-type fixed connector based on the auxetic wedge when it is used for a connecting piece with a blind hole.

detailed description

The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

As shown in Fig. 1 to Fig. 5, according to the inventive spirit of the present invention, a double nut screw type fixed connector based on an auxetic wedge block is provided, wherein the double nut screw type fixed connector based on an auxetic wedge block includes a compression bolt 1. A compression nut 2 , an external pulling bolt 3 and at least one fastening pin 4 .

The compression bolt 1 is hollow, and the compression bolt 1 is provided with an external thread structure, an internal thread structure and at least one pin hole 11, and each of the pin holes 11 is respectively arranged at the end of the compression bolt 1 at intervals, and Each of the pin holes 11 communicates with the inside and outside of the compression bolt 1 , and each of the fastening pins 4 is movably disposed in each of the pin holes 11 . The compression nut 2 and the external thread structure of the compression bolt 1 cooperate with each other, so that the compression nut 2 is screwed to the external thread structure of the compression bolt 1 .

The pull bolt 3 includes a first section structure 31, a second section structure 32, a third section structure 33, a fourth section structure 34, a fifth section structure 35 and a sixth section structure 36, and the The first section structure 31, the second section structure 32, the third section structure 33, the fourth section structure 34, the fifth section structure 35 and the sixth section structure 36 of the external pull bolt 3 are pulled from the outside The front end of the bolt 3 is integrally formed toward the end, the first section structure 31 of the pull bolt 3 is an inner hexagon nut, the second section structure 32 is a shaft of a certain length, and the third section structure 33 is an external thread structure of a certain length , The fourth segment structure 34 is a shaft with a certain length, the fifth segment structure 35 is a conical surface with a certain angle, and the sixth segment structure 36 is a shaft with a certain length. The pulling bolt 3 is operatively arranged inside the compression bolt 1, and the external thread structure of the third segment structure 33 of the pulling bolt 3 cooperates with the internal thread structure of the compression bolt 1, each The fastening pins 4 respectively correspond to the fourth segment structure 34 of the pulling bolt 3 , and each of the fastening pins 4 does not protrude from the outer surface of the pressing bolt 3 . When the pull-out bolt 3 is operated to move outward, each fastening pin 4 corresponds to the sixth-section structure 36 of the pull-out bolt 3 after passing through the fifth section structure 35 of the pull-out bolt 3 respectively, so as to Each of the fastening pins 4 protrudes from the outer surface of the compression bolt 1 by the sixth segment structure 36 of the pull bolt 3 .

It is worth mentioning that the compression bolt 1 has three pin holes 11, each of which is independent of each other, and the extension direction of each of the pin holes 11 and the extension direction of the compression bolt 1 are perpendicular to each other, the The double-nut screw type fixed connector based on the auxetic wedge includes three fastening pins 4 , and each fastening pin 4 is movably arranged in each pin hole 11 .

Further, the double-nut screw type fixed connector based on the auxetic wedge block includes a collar 5, and the compression bolt 1 has a collar groove 12, and the collar groove 12 is adjacently arranged in each of the pin holes 11 , the collar 5 is fixed in the collar groove 12, so as to prevent each of the fastening pins 4 from falling off from each of the pin holes 11 by the collar 5. Preferably, the collar 5 is an elastic metal ring.

The auxetic wedge-based double-nut screw-type fixed connector includes a washer 6 , the washer 6 is sleeved on the compression bolt 1 , and the washer 6 is adjacent to the compression nut 2 .

Further, the compression bolt 1 is provided with a retaining ring groove 13 for the hole, and the double-nut screw type fixed connector based on the auxetic wedge block includes a retaining ring 7 for the hole, and the retaining ring 7 for the hole is arranged on the compression ring. The retaining ring groove 13 for the hole of the bolt 1 is used to limit the outward movement of the pulling bolt 3 by the retaining ring 7 for the hole. Preferably, the retaining ring 7 for the hole is an elastic metal ring. More preferably, the retaining ring groove 13 for the hole of the compression bolt is adjacent to the internal thread structure of the compression bolt 1 .

As shown in Figure 4, when the double-nut screw type fixed connector based on the auxetic wedge is used to connect a first connector 8 and a second connector 9 with a through hole, the through hole of the first connector 8 Corresponding to the through hole of the second connecting piece 9, hook the through hole of the first connecting piece 8 and the second connecting piece 9 with the double-nut screw type fixed connector based on the auxetic wedge block, and then use a wrench to clamp Hold the wrench clamping port of the compression bolt 1, loosen the pull-out bolt 3 with an Allen wrench, and move the pull-out bolt 3 outward. At this time, the fifth segment structure 35 of the pull-out bolt 3 It will be in tight contact with the fastening pin 4 and push the fastening pin 4 to expand outward until it is fully tensioned and effectively clamped with the second connecting member 9 . Thereafter, the first connector 8 and the second connector 9 are connected together by tightening the compression nut 2, wherein the washer 6 is located between the compression nut 2 and the first connector 8, thereby completing the The connection between the first connecting piece 8 and the second connecting piece 9 . The disassembly process of the double-nut screw-type fixed connector based on the auxetic wedge is opposite, and the present invention will not describe it again.

As shown in Figure 5, when the double-nut screw type fixed connector based on the auxetic wedge is used to connect the first connecting piece 8 with a through hole and the second connecting piece 9 with a blind hole, the first connecting piece The through hole of 8 corresponds to the blind hole of the second connecting piece 9, and the double nut screw type fixed connector based on the auxetic wedge is inserted into the through hole of the first connecting piece 8 and the second connecting piece 9 blind holes. Clamp the wrench clamping port of the compression bolt 1 with a wrench again, then unscrew the pull-out bolt 3 by an Allen wrench, so that the pull-out bolt 3 moves outwards, at this moment, the pull-out bolt 3 The fifth segment structure 35 will be in tight contact with the fastening pin 4, and push the fastening pin 4 to expand outward to fully tension and make contact with the inside of the blind hole of the second connecting member 9, which will generate a certain amount of tension on the inner wall. contact pressure and static friction, so that the first connecting member 8 and the second connecting member 9 are reliably connected together. Thereafter, the first connector 8 and the second connector 9 are connected together by tightening the compression nut 2, wherein the washer 6 is located between the compression nut 2 and the first connector 8, thereby completing the The connection between the first connecting piece 8 and the second connecting piece 9 . The disassembly process of the double-nut screw-type fixed connector based on the auxetic wedge is opposite, and the present invention will not describe it again.

An embodiment of the present invention has been described in detail above, but this content is only a preferred embodiment of the present invention, and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the application scope of the present invention shall still belong to the scope covered by the patent of the present invention.

Claims (8)

1. a kind of double nut screw fixed connection device based on auxetic wedge, it is characterised in that auxetic wedge should be based on Double nut screw fixed connection device include hold-down bolt, clamp nut, one draw bolt and at least outward Individual holding pin, the hold-down bolt is hollow type, and the hold-down bolt is provided with external thread structure, female thread structure and at least one pin Hole, each pin-and-hole is arranged at spaced reciprocally respectively the end of the hold-down bolt, and each pin-and-hole is respectively communicated with this Hold-down bolt it is inside and outside, each holding pin is movably disposed in respectively each pin-and-hole, the clamp nut and should The external thread structure of hold-down bolt cooperates, so that the clamp nut is bolted in the external thread structure of the hold-down bolt, this is outer Draw bolt include first segment structure, second segment structure, three-stage structure, the 4th segment structure, one the Five segment structures and the 6th segment structure, and this it is outer draw first segment structure of bolt, second segment structure, the 3rd section The front end terminad one landform of structure, the 4th segment structure, the 5th segment structure and the 6th segment structure from the outer drawing bolt Into, this is outer draw bolt first segment structure be hexagonal socket nut, the second segment structure be the axle of certain length, three-stage structure be The external thread structure of certain length, the 4th segment structure are the axle of certain length, the 5th segment structure for certain angle the conical surface, the 6th Segment structure is the axle of certain length, the outer inside for drawing bolt to be operably disposed in the hold-down bolt, and the outer drawing bolt The external thread structure of the three-stage structure and the female thread structure of the hold-down bolt cooperate, each this holding pin difference Corresponding to the 4th segment structure of the outer drawing bolt, and each holding pin does not protrude from the outer surface of the hold-down bolt, when When operating the outer drawing bolt to be displaced outwardly, each holding pin is respectively via right respectively after the 5th segment structure of the outer drawing bolt Each holding pin should be projected in the 6th segment structure of the outer drawing bolt with the 6th segment structure by the outer drawing bolt In the outer surface of the hold-down bolt.

2. a kind of double nut screw fixed connection device based on auxetic wedge as claimed in claim 1, it is characterised in that The double nut screw fixed connection device of auxetic wedge should be based on includes a collar, and the hold-down bolt has a collar Groove, the collar groove is disposed adjacently in each pin-and-hole, and the collar is fixed on the collar groove, to prevent each to be somebody's turn to do by the collar From each, the pin-and-hole comes off holding pin.

3. a kind of double nut screw fixed connection device based on auxetic wedge as claimed in claim 2, it is characterised in that The collar is the resilient becket of tool.

4. a kind of double nut screw fixed connection device based on auxetic wedge as claimed in claim 2, it is characterised in that The double nut screw fixed connection device of auxetic wedge should be based on includes a packing ring, and the packing ring is sleeved on the hold-down bolt, And the packing ring and the clamp nut are adjacent.

5. as any one of a kind of double nut screw based on auxetic wedge in claim 1,2,3 or 4 is consolidated Determine adapter, it is characterised in that the hold-down bolt is provided with hole circlip groove, the double nut screw that should be based on auxetic wedge is consolidated Adapter is determined including a hole back-up ring, the hole back-up ring is arranged at the hole circlip groove of the hold-down bolt, with by the hole The outer position for drawing bolt to be displaced outwardly is limited with back-up ring.

6. a kind of double nut screw fixed connection device based on auxetic wedge as claimed in claim 5, it is characterised in that The hole back-up ring is the resilient becket of tool.

7. a kind of double nut screw fixed connection device based on auxetic wedge as claimed in claim 5, it is characterised in that The hole circlip groove of the hold-down bolt and the female thread structure of the hold-down bolt are adjacent.

8. as any one of a kind of double nut screw based on auxetic wedge in claim 1,2,3 or 4 is consolidated Determine adapter, it is characterised in that the hold-down bolt has three pin-and-holes, and each pin-and-hole is mutually independent, and each pin The bearing of trend in hole and the bearing of trend of the hold-down bolt are mutually perpendicular to, and the double nut screw that should be based on auxetic wedge is fixed Adapter includes three holding pins, and each holding pin is movably disposed in respectively each pin-and-hole.