CN203238815U

CN203238815U - Knocking type anti-shock firmly-installedundercut anchor

Info

Publication number: CN203238815U
Application number: CN 201320224793
Authority: CN
Inventors: 李玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-26
Filing date: 2013-04-26
Publication date: 2013-10-16
Anticipated expiration: 2023-04-26

Abstract

The utility model discloses a knocking type anti-shock firmly-installed undercut anchor. The knocking type anti-shock firmly-installed undercut anchor comprises a screw with a conical head at one end, an expansion ring, an extrusion steel sleeve, a spacer and a nut, wherein the screw is sequentially sleeved with the expansion ring, the extrusion steel sleeve, the spacer and the nut. Three expansion pieces are arranged at one end, close to the conical head of the screw, of the expansion ring, and a hole is formed in the middle of each expansion piece. The surface of the expansion ring is coated with a nylon protection layer in a dipping mode. According to the knocking type anti-shock firmly-installed undercut anchor, the three expansion pieces are used, and therefore all the portions of the expansion ring are stressed uniformly, and the optimum effect of three-point stressing is achieved. The hole with a certain size is formed in each expansion piece, after knocking and extruding, the expansion ring can be expanded easily, and matching among the expansion ring, the screw and stone is close.

Description

The solid type back of the body of percussive antidetonation peace bolt

Technical field

The utility model relates to a kind of building outside finish curtain wall installation and uses securing member, especially relates to the solid type back of the body of a kind of percussive antidetonation peace bolt.

Background technology

Need to install in the peripheral structure of stone material at building curtain wall, mostly adopt back of the body bolt dry-hang stone syndeton, at present, generally use percussive back of the body bolt in the back of the body bolt dry-hang stone syndeton.This back of the body bolt is comprised of screw rod, expansion loop, extruding steel bushing, pad and nut with conical head usually.During use, expansion loop and extruding steel bushing are enclosed within on the screw rod successively, near conical head.One end of expansion loop has four expansion pieces (or more multi-disc), these four expansion pieces can be wedge shape by distending on the conical head of screw rod, then the expansion loop of the taper head end of screw rod and socket and extruding steel bushing are inserted back face of stone, in the default installing hole that is formed by cylindrical section and trapezoidal bottom two parts, relend and help outside hammer to knock, utilize the wedge shape inclined-plane of screw rod conical head that expansion loop is strutted, so that the first end of screw rod taper is fixed on the bottom of installing hole, screw rod is fastened in the installing hole like this, the screw rod outside is loaded on pad and nut, just can with the back of the body bolt be fixed on back face of stone, and then by the back of the body bolt with stone hanging on structural beams.

The problem that this structure can occur has, and the easy non-homogeneous expansion of the expansion piece of expansion loop causes each point stressed inconsistent, and expansion place does not leave the space, and expansion loop and screw rod cooperate insecure, and it is loosening to cause easily carrying on the back bolt; And expansion loop and screw rod all be metal, is after expanding the some contact to produce easily larger stress at the contact point place, and under the External Force Actings such as wind, contact point changes easily and destroys, also causes easily carrying on the back bolt and becomes flexible.

Summary of the invention

The technical problems to be solved in the utility model is to propose the solid type back of the body of a kind of percussive antidetonation peace bolt, and it is connected firmly, and security and stability is good.

Technical problem of the present utility model realizes by following technological means.

The solid type back of the body of this percussive antidetonation peace bolt comprises that an end is the screw rod of conical head, is enclosed within expansion loop, extruding steel bushing, pad, nut on the screw rod successively, described expansion loop is provided with three expansion pieces near an end of screw rod conical head, and the middle part perforate of each expansion piece.

The surface dip-coating of described expansion loop has nylon layer.

Described pad comprises ring washer and elastic washer.

The utility model is compared with the prior art the beneficial effect that has: the utility model uses three expansion pieces, the expansion piece of the more multi-disc that compares is more evenly distributed after expanding, so that expansion loop is stressed also more even everywhere, reach 3 stressed optimum efficiencies, and the hole of opening certain size at every expansion piece, after knocking, the easier expansion of expansion loop, it is tightr to have guaranteed that also expansion loop cooperates with screw rod.The technique such as mould and cover one deck nylon topping by soaking in the steel metal surface of expansion loop; expansion loop and screw rod, stone material inside are flexible contact like this; can reduce the stress that expansion loop is in contact with it a place, play buffering, discharge effect of stress, avoid the stone material contact position to be damaged.After knocking expansion, so that expansion loop and screw rod, stone material contact in plate hole are more firm, contact can not moved, and stress is effectively discharged, and connects more stability and safety.

Description of drawings

Fig. 1 is the structure chart of the specific embodiment;

Fig. 2 is the schematic diagram of expansion loop among Fig. 1.

The specific embodiment

The solid type back of the body of a kind of percussive antidetonation peace bolt as shown in Figure 1, comprises screw rod 1, expansion loop 6, extruding steel ring 5, ring washer 4, elastic washer 3, nut 2.One end of screw rod 1 is conical head, and expansion loop 6, extruding steel ring 5 are enclosed within on the screw rod 1 successively.Fig. 2 is the axial arrangement schematic diagram of expansion loop 6, and an end of expansion loop is provided with three expansion pieces 61, and the centre of each expansion piece 61 offers porose 62.Surface at expansion loop 6 is coated with last layer resilient protection nylon layer 63 by impregnation.

Use when installing, after expansion loop puts screw rod 1, expansion piece 61 is near the conical head side of screw rod, then the taper head end of screw rod and expansion loop 6, the extruding steel ring 5 that is socketed on it are inserted in the installing hole at the stone plate back side, knock screw rod 1 with hammer, utilize the inclined-plane of screw rod 1 conical head that three expansion pieces 61 are strutted, expansion loop 6 just is stuck in the trapezoidal hole section of installing hole bottom like this.Ring washer 4 and elastic washer 3 are enclosed within on the screw rod, fastening nut 2 is so that whole back of the body bolt is fixed on the back side of stone plate again.Locate each at the stone plate back side four jiaos and fix a back of the body bolt, just stone plate can have been hung on the periphery beam of building.

Above content is in conjunction with concrete embodiment further detailed description of the utility model, can not assert that implementation of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.

Claims

1. the solid type of percussive antidetonation peace is carried on the back bolt, comprise that an end is the screw rod of conical head, is enclosed within expansion loop on the screw rod, extruding steel bushing, pad, nut successively, it is characterized in that: described expansion loop is provided with three expansion pieces near an end of screw rod conical head, and the middle part perforate of each expansion piece.

2. the solid type of percussive antidetonation peace as claimed in claim 1 is carried on the back bolt, and it is characterized in that: the surface dip-coating of described expansion loop has the nylon topping.

3. the solid type of percussive antidetonation peace as claimed in claim 1 or 2 is carried on the back bolt, and it is characterized in that: described pad comprises ring washer and elastic washer.