CN202170595U

CN202170595U - Anchoring clamping plate

Info

Publication number: CN202170595U
Application number: CN2011202765048U
Authority: CN
Inventors: 张军; 李立功
Original assignee: TIANJIN YINYAN PRESTRESSING CO Ltd
Current assignee: TIANJIN YINYAN PRESTRESSING CO Ltd
Priority date: 2011-08-02
Filing date: 2011-08-02
Publication date: 2012-03-21
Anticipated expiration: 2021-08-02

Abstract

The utility model discloses an anchoring clamping plate which comprises a cone that is obtained through combining two or more than two clamping plates and has a large top part and a small lower part. A first groove is provided outside the large-top end of the cone. An inner hole wall of the cone is provided with internal screw threads. A second groove is formed at the periphery of one side of the first groove, which is far from the large head end. An O-shaped sealing ring is equipped in the second groove. The anchoring clamping plate according to the utility model is provided with two grooves on the cone body which is obtained through combining a plurality of clamping plates, and therefore high convenience in anchor withdrawing is obtained.

Description

A kind of anchoring intermediate plate

Technical field

The utility model relates to prestressed anchor, particularly relates to a kind of anchoring intermediate plate.

Background technology

Ground tackle is the device of anchoring presstressed reinforcing steel when making prestressed concrete member, and ground tackle commonly used comprises: anchoring cone, bulb-end anchorage, screw thread steel ground tackle, intermediate plate ground tackle and fixed end ground tackle etc.And commonly used in the intermediate plate ground tackle be steel strand intermediate plate anchor and flat intermediate plate ground tackle.In steel strand intermediate plate anchor, intermediate plate and anchor slab are the most key parts in the whole prestress anchorage system.Through the wedge principle, intermediate plate and anchor slab cooperatively interact, and prestress wire is grasped, and directly bear the stretching force of prestressed structure; Anchor plate is a casting body, and it is embedded in the concrete, works to transmit and disperse anchor slab pressure; Spiral bar places the extension outside of anchor plate, is the effective measures of guaranteeing anchor slab stress safe transfer and dispersion, has improved partial pressing's intensity of concrete structure greatly, can control anchoring and concrete spalling effectively.

Prestress wire can be divided into two stages from putting after the stretch-draw to open to being held:

Phase I, i.e. after ground tackle stretch-draw was put and opened the beginning, jack is release slowly, contract in the steel strand, and the drive intermediate plate moved; After intermediate plate was in place, the horizontal chucking power that steel strand receive increased gradually, and intermediate plate silk tooth stops the resistance that contracts in the steel strand also to increase thereupon.In this process, the relative intermediate plate silk of steel strand tooth produces slippage, to the certain distance by self-locking.Second stage, promptly steel strand do not produce relative slippage with intermediate plate after anchoring; Open and put along with the continuation of jack, steel strand and intermediate plate are connected as a single entity, and contract in the continuation; Anchor slab is to the corresponding increase of radially clamping force of intermediate plate, steel strand; Intermediate plate silk tooth snaps in the steel strand certain depth, constitutes mechanical snap, up to final stable the clamping.

Existing anchoring intermediate plate generally all is to form a cone that the top is big, the bottom is little by the combination intermediate plate more than two or two; As shown in Figure 1; The outside of intermediate plate 1 stub end has groove 2; On the inner hole wall of the cone that intermediate plate constitutes, be formed with interior pitch thread (not marking among the figure), an O-ring seals (not shown) is installed in groove 2.When stripped thread in work progress, occurring or doing experiment moving back anchor, because the intermediate plate appearance has only a groove of placing O-ring seals, so when withdrawing from the anchoring intermediate plate, have only a position to use, it is very inconvenient to operate.

Summary of the invention

The purpose of the utility model just provides a kind of anchoring intermediate plate of operating when conveniently moving back anchor.

For this reason, the technical scheme of the utility model is following:

A kind of anchoring intermediate plate; Comprise the cone that the top that is combined to form by the intermediate plate more than two or two is big, the bottom is little; The outside at the stub end of said cone has the 1st groove; On the inner hole wall of this cone, be formed with interior pitch thread, near the side of said the 1st groove, be formed with the 2nd groove, in this 2 groove, O-ring seals is installed away from stub end.

The anchoring intermediate plate of the utility model is because the cone that is combined to form by a plurality of intermediate plates is provided with two grooves, so it is very convenient to move back anchor.

Description of drawings

Fig. 1 is the structural representation of existing prestress anchoraging intermediate plate;

Fig. 2 is the structural representation of the prestress anchoraging intermediate plate of the utility model.

The specific embodiment

Be elaborated below in conjunction with the structure of accompanying drawing to the prestress anchoraging intermediate plate of the utility model.

As shown in Figure 2; The anchoring intermediate plate of the utility model comprises the cone 10 that the top that is combined to form by the intermediate plate more than two or two is big, the bottom is little; The outside at the stub end of said cone has the 1st groove 11; On the inner hole wall of this cone 10, be formed with interior pitch thread (identifying among the figure), near the side of the 1st groove 11, be formed with the 2nd groove 12, O-ring seals (identifying among the figure) is installed in the 2nd groove away from stub end.

Claims

1. anchoring intermediate plate; Comprise the cone that the top that is combined to form by the intermediate plate more than two or two is big, the bottom is little; The outside at the stub end of said cone has the 1st groove; On the inner hole wall of this cone, be formed with interior pitch thread, it is characterized in that: near the side of said the 1st groove, be formed with the 2nd groove, in this 2 groove, O-ring seals be installed away from stub end.