CN2448892Y

CN2448892Y - Tool anchor clamp

Info

Publication number: CN2448892Y
Application number: CN 00262626
Authority: CN
Inventors: 苏均; 郑晓龙; 黄颖; 朱万旭
Original assignee: OUWEIMU ARCHITECTURAL MACHINERY CO Ltd LIUZHOU
Current assignee: OUWEIMU ARCHITECTURAL MACHINERY CO Ltd LIUZHOU
Priority date: 2000-11-13
Filing date: 2000-11-13
Publication date: 2001-09-19
Anticipated expiration: 2010-11-13

Abstract

The utility model relates to a clamping sheet for a tool anchor. The conical degree start of a conical opening of the clamping section of the front end of the utility model is from 1: 15 to 1: 25, the tooth shape of the clamping face of the utility model is in a saw tooth shape, a tooth-shaped angle A of the utility model is from 80 DEG to 90 DEG, a tooth-shaped angle B is from 40 DEG to 90 DEG, and the width C of the tooth top is from 0.05 mm to 0.3 mm. The utility model is used for clamping and fixing a prestressing tendon on an anchor plate of the tool anchor. Compared with the prior art, the utility model has the advantages of high strength of the clamping prestressing tendon, high anchoring efficiency coefficients and high repeated use times, wherein, the strength of the prestressing tendon can reach 2000MPa, the anchoring efficiency coefficients can reach more than 95%, and the repeated use times can reach average 200 times.

Description

The moveable anchor intermediate plate

The utility model relates to a kind of being used for presstressed reinforcing steel is clamped to intermediate plate on the moveable anchor anchor slab.

Moveable anchor is to be the pulling force that keeps presstressed reinforcing steel or the provisional anchor device of clamping use for tendon.Owing to be makeshift device, so the moveable anchor instrument that can be used as uses repeatedly, and spendable number of times is The more the better, and until instrument intermediate plate destruction, therefore, most important part then is an intermediate plate wherein in the moveable anchor, and its structural performance directly influences the performance of moveable anchor.Existing this intermediate plate is just like the moveable anchor intermediate plate that the applicant produced at present, and the opening tapering of this intermediate plate front end gripping section is bigger, is tapering

1: 5; Tooth Shape Design is a circular arc, thinks that this profile of tooth both can reach repeatedly the purpose of using, can make things convenient for again the instrument intermediate plate move back anchor after take out, and zigzag profile of tooth tooth top rapid wear is not suitable for repeatedly and uses.But existing this intermediate plate general actual efficiency of anchorage in pre-stress construction is 75%, fails to reach 95% GB requirement.Along with presstressed reinforcing steel intensity, hardness are more and more higher, cause the nip stress concentrations of intermediate plate to presstressed reinforcing steel, efficiency of anchorage does not reach 75% phenomenon that stripped thread just takes place.I find that through test of many times the opening tapering of jagged profile of tooth of appropriate design and intermediate plate front end clamp port can effectively address the above problem.

The purpose of this utility model provides a kind of efficiency of anchorage and access times are high repeatedly moveable anchor intermediate plate.

For achieving the above object, the scheme of the utility model employing is: the inboard clamping face of moveable anchor intermediate plate is provided with tooth, is provided with tapered opening at the front end gripping section, the tapering of the tapered opening of its front end gripping section Be 1: 15-1: 25; The profile of tooth of its clamping face is a zigzag, and its profile angle A is 80-90 °; Profile angle B is 40-70 °; Tooth top width C is the 0.05-0.3 millimeter.

The length L 1 of above-mentioned tapered opening can be the 5-15 millimeter; The tooth pitch L2 of above-mentioned tooth can be the 0.5-2 millimeter.

Owing to adopted such scheme, the utility model compared with prior art has following benefit: because the tapering of the tapered opening of moveable anchor intermediate plate front end gripping section and the improvement of profile of tooth, anchoring property of the present utility model can by prior art can only grip strength less than the presstressed reinforcing steel of 1860Mpa, and but efficiency of anchorage only reaches 75% level and brings up to the presstressed reinforcing steel that grip strength reaches 2000Mpa, and efficiency of anchorage reaches more than 95%; In addition, intermediate plate repeatedly access times can bring up to average 200 times by the average 100 times level of prior art.

The utility model is described in further detail below in conjunction with the accompanying drawing example:

Fig. 1 is the front view of prior art.

Fig. 2 is the left view of prior art.

Fig. 3 is the partial enlarged view of Fig. 2.

Fig. 4 is the front view of the utility model embodiment.

Fig. 5 is the left view of the utility model embodiment.

Fig. 6 is the partial enlarged view of Fig. 5.

Fig. 1, Fig. 2, example shown in Figure 3 are the moveable anchor intermediate plate that present the applicant produced, and what wherein Fig. 1 and Fig. 2 represented forms one group moveable anchor intermediate plate view by three intermediate plates, and Fig. 3 is 20: 1 the partial enlarged view of Fig. 2.Shown in the figure, the opening tapering of this intermediate plate front end gripping section is bigger, is tapering

1: 5; The intermediate plate tooth Shape Design is 0.65 millimeter a circular arc, and addendum angle is 60 °; Tooth pitch is 1.5 millimeters.

Fig. 1, Fig. 2, shown in Figure 3 be the structural representation of the utility model embodiment, wherein Fig. 4 and Fig. 5 are represented also is made of one group moveable anchor intermediate plate view three intermediate plates, Fig. 6 is 20: 1 the partial enlarged view of Fig. 5.Shown in the figure, the inboard clamping face of every moveable anchor intermediate plate is provided with zigzag tooth, its profile angle A is 80 °; Profile angle B is 60 °; Tooth top width C is 0.1 millimeter.This moveable anchor intermediate plate is provided with tapered opening at the front end gripping section, the tapering of its tapered opening It is 1: 20; The length L 1 of tapered opening is 12 millimeters; The tooth pitch L2 of described tooth is 1 millimeter.

Claims

1, a kind of inboard clamping face is provided with tooth, is provided with the moveable anchor intermediate plate of tapered opening at the front end gripping section, it is characterized in that: the tapering of the tapered opening of described front end gripping section Be 1: 15-1: 25; The profile of tooth of its clamping face is a zigzag, and its profile angle A is 80-90 °; Profile angle B is 40-70 °; Tooth top width C is the 0.05-0.3 millimeter.

2, moveable anchor intermediate plate according to claim 1 is characterized in that: the length L 1 of described tapered opening is the 5-15 millimeter; The tooth pitch L2 of described tooth is the 0.5-2 millimeter.