CN214888208U

CN214888208U - Undercut machinery crab-bolt behind strength card

Info

Publication number: CN214888208U
Application number: CN202121603212.0U
Authority: CN
Inventors: 李红霞
Original assignee: Beijing Dingli Zhicheng Engineering Technology Co ltd
Current assignee: Beijing Dingli Zhicheng Engineering Technology Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2021-11-26
Anticipated expiration: 2031-07-14

Abstract

The utility model discloses a bottom-cutting machinery crab-bolt behind strength card belongs to bolt technical field, include bolt, steel nut, anti-shear sleeve pipe, expand and expand the nut and constitute, the end at the bolt is installed to the nut that expands, the both sides that expand and expand the piece all are equipped with expand and expand the opening, expand and expand the cover and establish on the bolt and be in the side that expands the nut, the tight nut that expands is close to one side that expands the piece and is the toper setting, the tight nut that expands agrees with to expand and expand opening department, anti-shear sleeve pipe cover is established on the bolt and is in the side that expands the piece, anti-shear sleeve pipe agrees with to expand opening department, the steel nut is installed on the bolt and is in anti-shear sleeve pipe's side. The utility model discloses a fastening steel nut makes the nut that expands expand to expand a direction removal and is a expand opening and strut and the mutual interlock of notch, meanwhile, the opening is expanded to expand that the anti-shear sleeve pipe agrees with each other opens and the mutual interlock of notch to reach the effect that the interior bloated stings outward.

Description

Undercut machinery crab-bolt behind strength card

Technical Field

The utility model relates to a bolt technical field especially relates to a undercut machinery crab-bolt behind strength card.

Background

The anchor bolt is a general term of all rear anchoring components and has a wide range. The anchor bolt is divided into a metal anchor bolt and a non-metal anchor bolt according to different raw materials. According to different anchoring mechanisms, the anchor bolts are divided into expansion type anchor bolts, hole expanding type anchor bolts, bonding type anchor bolts, concrete screws, shooting nails, concrete nails and the like.

But there is the installation loaded down with trivial details mechanical crab-bolt among the prior art, mostly is single mouth that expands, and anchoring force is general, generally not applicable to there are vibration load and impact load place.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a undercut mechanical crab-bolt behind strength card to there is not convenient to install and the not enough technical problem of anchor power in the mechanical crab-bolt of solving among the prior art.

The embodiment of the utility model provides an adopt following technical scheme: a mechanical anchor bolt with a bottom cutting function after a forced clamping mechanism comprises a bolt, a steel nut, an anti-shearing sleeve, an expansion piece and an expansion nut, wherein the expansion nut is installed at the tail end of the bolt, expansion opening openings are formed in two sides of the expansion piece, the expansion piece is sleeved on the bolt and is positioned at the side end of the expansion nut, one side, close to the expansion piece, of the expansion nut is arranged in a conical mode, the expansion nut is matched with the expansion opening openings, the anti-shearing sleeve is sleeved on the bolt and is positioned at the side end of the expansion piece, the anti-shearing sleeve is matched with the expansion opening openings, the steel nut is installed on the bolt and is positioned at the side end of the anti-shearing sleeve, the bolt is inserted into a notch during use, then the steel nut is fastened, the bolt moves towards the outer side of the notch under the driving of the steel nut at the moment, the expansion nut moves towards the direction of the expansion piece, namely the expansion opening is expanded to be meshed with the notch, meanwhile, the expansion piece moves towards the direction of the anti-shearing sleeve under the driving of the expansion nut, and the expansion opening which is mutually matched with the anti-shearing sleeve is opened and is mutually meshed with the notch, so that the effect of internal expansion and external biting is achieved.

Further, anti-shearing sleeve pipe comprises tight portion, inside reinforcing bar portion, protective layer portion and the rearmounted board portion of burying of expanding, and the tight portion that expands is in the position department that is close to the bloated piece that expands, and the tight portion that expands agrees with each other with the bloated opening that expands, inside reinforcing bar portion, protective layer portion and rearmounted board portion of burying set up towards the steel nut direction in proper order.

Further, the steel pad is sleeved between the anti-shearing sleeve and the steel nut, and the steel pad can be uniformly contacted with the anti-shearing sleeve, so that the steel nut is prevented from being damaged by the anti-shearing sleeve in the rotating and fastening process.

Further, expand and expand the open-ended outside end and be equipped with the interlock tooth, expand when expanding the opening and strut back interlock tooth and can imbed the notch in to this can increase the utility model discloses an installation stability.

Further, expand and expand the open-ended periphery and be equipped with and expand the incision, expand through the setting and expand the incision and can increase and expand the open-ended angle of strutting to this has increased and has expanded the laminating area of opening and notch.

The embodiment of the utility model provides an above-mentioned at least one technical scheme who adopts can reach following beneficial effect:

one of them, the utility model discloses the bolt removes to the notch outside at the drive of steel nut when fastening steel nut, makes the tight nut that expands to expand an orientation and removes to expand the opening and strut and the mutual interlock of notch, meanwhile, makes to expand under the drive of the tight nut that expands and expand an orientation anti-shear sleeve pipe orientation and remove, expands the opening with what anti-shear sleeve pipe agreed with each other this moment and opens and the mutual interlock of notch to reach the effect that the internal expanding was stung outward.

And secondly, the utility model discloses expand expanding the open-ended periphery and be equipped with to expand and expand the incision, expand through setting up expand the incision can increase expand the open-ended angle of strutting to this has increased the laminating area that expands opening and notch.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic view of the state structure of the present invention installed in the notch.

Reference numerals

The bolt comprises a bolt 1, a steel nut 2, a shear-resistant sleeve 3, an expansion part 31, an internal steel bar part 32, a protective layer part 33, a rear embedded plate part 34, an expansion nut 4, an expansion piece 5, an expansion opening 51, occlusion teeth 52, an expansion notch 53 and a steel gasket 6.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

The embodiment of the utility model provides a bottom-cutting mechanical anchor bolt behind strength card, including bolt 1, steel nut 2, anti-shear sleeve pipe 3, expand and expand the nut 4 and constitute, expand the nut 4 and install at the end of bolt 1, expand and expand the both sides of piece 5 and all be equipped with expand and expand opening 51, expand and expand 5 cover and establish on bolt 1 and be in the side of expanding nut 4, one side that the nut 4 that expands is close to expand and expand 5 is the toper setting, expand the nut 4 and agree with expand and expand opening 51 department, anti-shear sleeve pipe 3 cover is established on bolt 1 and is in the side of expanding 5, anti-shear sleeve pipe 3 agrees with expand opening 51 department, steel nut 2 installs on bolt 1 and is in the side of anti-shear sleeve pipe 3, through inserting bolt 1 and establishing to the notch during the use, then fastening steel nut 2, bolt 1 moves to the notch outside at the drive of steel nut 2 this moment, the expansion nut 4 moves towards the expansion piece 5, namely the expansion opening is expanded to be meshed with the notch, meanwhile, the expansion piece 5 moves towards the anti-shearing sleeve 3 under the driving of the expansion nut 4, the expansion opening 51 which is mutually matched with the anti-shearing sleeve 3 is expanded to be meshed with the notch, and therefore the effect of internal expansion and external meshing is achieved.

Preferably, the shear-resistant sleeve 3 is composed of an expansion portion 31, an internal reinforcing steel bar portion 32, a protective layer portion 33 and a rear buried plate portion 34, the expansion portion 31 is located at a position close to the expansion piece 5, the expansion portion 31 is matched with the expansion opening 51, and the internal reinforcing steel bar portion 32, the protective layer portion 33 and the rear buried plate portion 34 are sequentially arranged towards the steel nut 2.

Preferably, the cover is equipped with steel pad 6 between anti-shear sleeve pipe 3 and the steel nut 2, through the steel pad 6 that sets up can be even with anti-shear sleeve pipe 3 contact each other, prevent that steel nut 2 from causing the damage at rotatory fastening in-process anti-shear sleeve pipe 3.

Preferably, the outside end of expanding opening 51 is equipped with occlusion tooth 52, expands and expand opening 51 and strut back occlusion tooth 52 and can imbed in the notch to this can increase the utility model discloses an installation stability.

Preferably, the expansion notch 53 is arranged on the periphery of the expansion opening 51, and the expansion angle of the expansion opening 51 can be increased through the expansion notch 53, so that the attachment area between the expansion opening 51 and the notch is increased.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a undercut machinery crab-bolt behind strength card which characterized in that: expand and expand piece (5) and expand tight nut (4) and constitute including bolt (1), steel nut (2), anti-shear sleeve pipe (3), expand, the end at bolt (1) is installed in tight nut (4) expands, expand and all be equipped with to expand the both sides that expand piece (5) and expand opening (51), expand and establish the side that is established on bolt (1) and is in tight nut (4), one side that expand tight nut (4) is close to expand and expands piece (5) is the toper setting, expand tight nut (4) agree with to expand and expand opening (51) department, anti-shear sleeve pipe (3) cover is established on bolt (1) and is in the side that expands piece (5), anti-shear sleeve pipe (3) agree with to expand opening (51) department, steel nut (2) are installed on bolt (1) and are in the side of anti-shear sleeve pipe (3).

2. A mechanical fastener-backed undercut anchor as set forth in claim 1, wherein: anti-shear sleeve pipe (3) comprise tight portion (31), inside reinforcing bar portion (32), guard layer portion (33) and rearmounted buried plate portion (34) of expanding, and the tight portion (31) of expanding is in and is close to the position department that expands and expand piece (5), and the tight portion (31) of expanding agrees with each other with opening (51) with expanding, inside reinforcing bar portion (32), guard layer portion (33) and rearmounted buried plate portion (34) set up towards steel nut (2) direction in proper order.

3. A mechanical fastener-backed undercut anchor as set forth in claim 1, wherein: and a steel gasket (6) is sleeved between the anti-shearing sleeve (3) and the steel nut (2).

4. A mechanical fastener-backed undercut anchor as set forth in claim 1, wherein: and occlusion teeth (52) are arranged at the outer side end of the expansion opening (51).

5. A mechanical fastener-backed undercut anchor as set forth in claim 1, wherein: and an expansion notch (53) is arranged on the periphery of the expansion opening (51).