CN213064223U

CN213064223U - Expansion type high-strength bolt fastener

Info

Publication number: CN213064223U
Application number: CN202021494050.7U
Authority: CN
Inventors: 张广标
Original assignee: Tianjin Haoyuequan Hardware Products Co ltd
Current assignee: Tianjin Haoyuequan Hardware Products Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-04-27
Anticipated expiration: 2030-07-24

Abstract

The utility model discloses a bolt fastening spare of inflation formula high strength especially relates to bolt fastening spare technical field, including dead lever and expansion sleeve, the expansion sleeve cup joints in the dead lever outside, and the dead lever rear end is fixed with the spiral shell head, and the dead lever front end is fixed with short screw rod, and the expansion sleeve is all opened to both ends front side from top to bottom has the expansion tank, and expansion sleeve the place ahead is provided with the taper sleeve. This kind of bolt fastener of inflation formula high strength through rotating the spiral shell head, drives the short screw rod and rotates the back, makes the expansion tank of inflation cover split, and the inflation of inflation cover is got up this moment, later through rotating the long screw rod, can make the fixture block roll-off wear the groove, and the fixture block can bulge the inflation cover like this, realizes dual fastening like this to fastening tensile strength has been improved, comparatively single in order to solve traditional bolt fastener fastening mode, makes the lower problem of fastening tensile strength.

Description

Expansion type high-strength bolt fastener

Technical Field

The utility model relates to a bolt fastener technical field especially relates to a bolt fastener of inflation formula high strength.

Background

The expansion bolt is one of expansion bolt fasteners, and is a special threaded connector for fixing pipeline branch/hanger/bracket or equipment on a wall, a floor slab and a column, and the grades of the carbon steel bolts are divided into more than 10 grades, such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 and the like. At present expansion bolts when using, generally make screw rod and frustum threaded connection through rotating the screw rod, the frustum removes extrusion expansion sleeve like this, makes expansion sleeve inflation realize the fastening, and fastening mode is comparatively single like this for fastening tensile strength is lower, leads to being difficult to reach user's demand.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bolt fastening spare of inflation formula high strength to it is comparatively single to solve traditional bolt fastening spare fastening mode, makes the lower problem of fastening tensile strength.

The utility model provides a technical scheme that its technical problem adopted is: an expansion type high-strength bolt fastener comprises a fixed rod and an expansion sleeve, wherein the expansion sleeve is sleeved outside the fixed rod, a screw head is fixed at the rear end of the fixed rod, a short screw rod is fixed at the front end of the fixed rod, expansion grooves are formed in the front sides of the upper end and the lower end of the expansion sleeve, a taper sleeve is arranged in front of the expansion sleeve, the front end of the short screw rod penetrates through the taper sleeve to be in threaded connection with the taper sleeve, a sliding cavity is arranged inside the fixed rod, two clamping blocks are symmetrically arranged on the upper side and the lower side of the front inside the sliding cavity, the outer ends of the clamping blocks penetrate through the fixed rod to be in sliding connection with the fixed rod, penetrating grooves are formed in the middle parts of the upper end and the lower end of the expansion sleeve, the clamping blocks are in one-to-one correspondence with the penetrating grooves, a long screw rod penetrates through the, the push block is connected with the sliding cavity in a sliding mode, and a screw head is arranged at the rear end of the long screw rod.

Specifically, the front end of the expansion groove is communicated with the expansion sleeve, the taper sleeve is in a round table-shaped structure, and the rear end of the taper sleeve is connected with the expansion sleeve in an inserting mode.

Specifically, a rubber rope is bonded to the front end of the clamping block, and the other end of the rubber rope is bonded to the inner wall of the sliding cavity.

Specifically, springs are bonded between the clamping blocks.

Specifically, both sides all are the inclined plane around the fixture block lower extreme, be the plane in the middle of the fixture block lower extreme, both sides all are the inclined plane about the ejector pad front end, be the plane in the middle of the ejector pad front end.

Specifically, the inclined planes of the upper side and the lower side of the push block are respectively matched with the inclined planes of the rear sides of the upper fixture block and the lower fixture block, and the push block is connected with the fixture blocks in a sliding mode.

Compared with the prior art, the utility model discloses the beneficial effect who realizes: this kind of bolt fastener of inflation formula high strength drives the short screw rod through rotating the spiral shell head and rotates the back, makes the expansion tank of inflation cover split, and the inflation of inflation cover is got up this moment, later through rotating long screw rod, can make the fixture block roll-off wear the groove, and fixture block can bulge the inflation cover like this, realizes dual fastening like this to fastening tensile strength has been improved.

Drawings

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

FIG. 2 is a schematic diagram of the rear end of the whole structure of the present invention;

FIG. 3 is a schematic view of the whole side view and section of the structure of the present invention;

fig. 4 is an enlarged view of a portion a of the cartridge of fig. 3.

In the figure: 1-fixing the rod; 2-screw head; 3-taper sleeve; 4-an expansion tank; 5-groove penetration; 6-clamping blocks; 7-long screw rod; 8-screw heads; 9-expansion sleeve; 10-short screw; 11-a sliding cavity; 12-rubber rope; 13-a push block; 14-spring.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an expansion type high-strength bolt fastener comprises a fixed rod 1 and an expansion sleeve 9, wherein the expansion sleeve 9 is sleeved outside the fixed rod 1, a screw head 2 is fixed at the rear end of the fixed rod 1, a short screw rod 10 is fixed at the front end of the fixed rod 1, expansion grooves 4 are formed in the front sides of the upper end and the lower end of the expansion sleeve 9, a taper sleeve 3 is arranged in front of the expansion sleeve 9, the front end of the short screw rod 10 penetrates through the taper sleeve 3 to be in threaded connection with the taper sleeve 3, a sliding cavity 11 is arranged inside the fixed rod 1, two clamping blocks 6 are symmetrically arranged on the upper side and the lower side of the front inside of the sliding cavity 11, the outer end of each clamping block 6 penetrates through the fixed rod 1 to be in sliding connection with the fixed rod 1, through grooves 5 are formed in the middle parts of the upper end and the lower end of the expansion sleeve 9, the clamping blocks 6 correspond to the through grooves 5 one by one, a long screw rod 7 is arranged, the front end of the long screw 7 is rotatably connected with a push block 13, the push block 13 is slidably connected with a sliding cavity 11, the rear end of the long screw 7 is provided with a screw head 8, the front end of the expansion groove 4 is communicated with an expansion sleeve 9, the taper sleeve 3 is in a round table-shaped structure, the rear end of the taper sleeve 3 is connected with the expansion sleeve 9 in an inserting manner, the front side and the rear side of the lower end of the fixture block 6 are inclined planes, the middle of the lower end of the fixture block 6 is a plane, the upper side and the lower side of the front end of the push block 13 are inclined planes, the inclined planes on the upper side and the lower side of the push block 13 are respectively matched with the inclined planes on the rear sides of the upper fixture block 6 and the lower fixture block 6, the push block 13 is slidably connected with the fixture block 6, the expansion sleeve 9 is pushed to extrude the taper sleeve 3 by pinching the expansion sleeve 9, then the screw head 2 is rotated, the fixed rod 1, because the rear end of taper sleeve 3 inserts and hugs closely with inflation cover 9 at inflation cover 9 front end, and 3 outer walls of taper sleeve are equipped with anti-skidding sand grip for through the frictional resistance between taper sleeve 3 and the inflation cover 9, and make taper sleeve 3 be difficult to drive by short screw rod 10 and rotate, short screw rod 10 twists through the screw thread and moves taper sleeve 3 backward and move extrusion inflation cover 9 like this, makes inflation groove 4 of inflation cover 9 split, makes inflation cover 9 front end slowly expand.

Concretely, the inflation cover 9 inflation back, hold between fingers the spiral shell head 2 and rotate screw head 8 with the screwdriver, screw head 8 drives long screw 7 and rotates the back, along with long screw 7 twists in the slip chamber 11 of dead lever 1, and promote ejector pad 13 and slide forward, ejector pad 13 agrees with the 6 rear side inclined planes of fixture block through the inclined plane of upper and lower both sides this moment, can slowly push between two fixture blocks 6, ejector pad 13 can promote two fixture blocks 6 and pull open the interval between this moment, and the outer end of fixture block 6 runs through dead lever 1 and is located the position of running through, 6 outer ends of fixture block can shift out the trough 5 along running through the position this moment, two fixture block 6 protrusion inflation covers 9 about can utilizing like this, realize dual fastening, thereby fastening tensile strength has been improved.

Furthermore, a rubber rope 12 is bonded to the front end of the fixture block 6, the other end of the rubber rope 12 is bonded to the inner wall of the sliding cavity 11, and the fixture block 6 can be prevented from being separated from a part penetrating through the fixing rod 1 when the fixing rod 1 rotates through the rubber rope 12, and in addition, when the fixing rod 1 rotates, the fixture block 6 cannot hinder the fixing rod 1 from rotating in the expansion sleeve 9 due to the fact that the outer end of the fixture block 6 and the surface of the fixing rod 1 are located on the same arc surface.

Further, a spring 14 is bonded between the latch 6, and the two latches 6 can be connected by pulling the spring 14, and when the push block 13 slides between the latches 6, the spring 14 has flexibility, so that the slide of the push block 13 between the latches 6 is not hindered.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a bolt fastener of inflation formula high strength, includes dead lever (1) and inflation cover (9), inflation cover (9) cup joint dead lever (1) outside, its characterized in that:

the rear end of the fixed rod (1) is fixedly provided with a screw head (2), the front end of the fixed rod (1) is fixedly provided with a short screw rod (10), expansion grooves (4) are formed in the front sides of the upper end and the lower end of each expansion sleeve (9), a taper sleeve (3) is arranged in front of each expansion sleeve (9), the front end of each short screw rod (10) penetrates through the taper sleeve (3) to be in threaded connection with the taper sleeve (3), a sliding cavity (11) is formed in the fixed rod (1), two clamping blocks (6) are symmetrically arranged in the upper side and the lower side of the front side of the sliding cavity (11), the outer end of each clamping block (6) penetrates through the fixed rod (1) to be in sliding connection with the fixed rod (1), the middle parts of the upper end and the lower end of each expansion sleeve (9) are provided with through grooves (5), the clamping blocks (6) are in one-to-one correspondence with the through grooves (5), the rear end of the screw head (2) is provided with a long screw, the long screw rod (7) front end rotates and is connected with ejector pad (13), ejector pad (13) and slip chamber (11) sliding connection, long screw rod (7) rear end is provided with screw head (8).

2. The expansion type high strength bolt fastener according to claim 1, wherein: the front end of the expansion groove (4) is communicated with the expansion sleeve (9), the taper sleeve (3) is of a circular truncated cone-shaped structure, and the rear end of the taper sleeve (3) is connected with the expansion sleeve (9) in an inserting mode.

3. The expansion type high strength bolt fastener according to claim 1, wherein: the front end of the clamping block (6) is bonded with a rubber rope (12), and the other end of the rubber rope (12) is bonded with the inner wall of the sliding cavity (11).

4. The expansion type high strength bolt fastener according to claim 1, wherein: and springs (14) are bonded between the clamping blocks (6).

5. The expansion type high strength bolt fastener according to claim 1, wherein: the front side and the rear side of the lower end of the clamping block (6) are inclined planes, the middle of the lower end of the clamping block (6) is a plane, the upper side and the lower side of the front end of the push block (13) are inclined planes, and the middle of the front end of the push block (13) is a plane.

6. An expansion-type high-strength bolt fastener according to claim 5, wherein: the inclined planes of the upper side and the lower side of the push block (13) are respectively matched with the inclined planes of the rear sides of the upper fixture block and the lower fixture block (6), and the push block (13) is connected with the fixture blocks (6) in a sliding mode.