CN202017304U - Automatic centering tensioning anchoring device for prestress sheet material clamp type anchor - Google Patents
Automatic centering tensioning anchoring device for prestress sheet material clamp type anchor Download PDFInfo
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- CN202017304U CN202017304U CN2011200388112U CN201120038811U CN202017304U CN 202017304 U CN202017304 U CN 202017304U CN 2011200388112 U CN2011200388112 U CN 2011200388112U CN 201120038811 U CN201120038811 U CN 201120038811U CN 202017304 U CN202017304 U CN 202017304U
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- anchoring
- screw rod
- pressing plate
- sheet material
- top board
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Abstract
The utility model discloses an automatic centering tensioning anchoring device for a prestress sheet material clamp type anchor, which comprises a clamp type anchor, an anchoring base, a holding screw rod and a jack, wherein the front end of the holding screw rod is fixedly connected with the clamp type anchor, and the back end of the holding screw rod sequentially and horizontally passes through the anchoring base, a hinge pad block, an anchoring duplex screw nut, a bearing and propping plate, an anchoring and pressing plate and a regulation screw nut. During the tensioning, the regulation screw nut is tightly pressed on the anchoring and pressing plate, the jack props and pushes the bearing and propping plate, the bearing and propping plate and the anchoring plate are hinged through a curve surface, in addition, the force is transmitted to the regulation screw nut, and finally, the regulation screw nut is used for exerting the tensioning force on the holding screw rod. After the tensioning is completed, the anchoring duplex screw nut is rotated so that the hinge pad block is tightly pressed onto the anchoring base, and the pressure bearing between the hinge pad block and the anchoring base is realized through curve surface contact. The automatic centering tensioning anchoring device has the advantages that the structure is simple, the automatic centering between the clamp type anchor and the sheet material can be realized, further, the sheet material is always ensured to be stressed in the vertical direction, and the transverse shearing stress can not be generated at the inside.
Description
Technical field
The utility model belongs to the prestressing technique field of engineering structures, is specifically related to the prestressing force sheet material stretching and anchoring device of automatic centering, only is longitudinal tensile in the stretch-draw anchor process to guarantee the prestressing force sheet material, and sheet material inside horizontal shear stress can not occur.
Background technology
Prestressing technique, be widely used in the Structural Engineerings such as industry and civilian construction, bridge engineering, adopted the concrete structure of prestressing technique all can to improve greatly at aspects such as cracking resistance, rigidity and durability, particularly through the high strength fibre composite sheet of prestressed stretch-draw, can be widely used in strengthening or reinforcing civil engineering structure (as concrete structure, steel work, wooden construction etc.), thereby improve the supporting capacity of engineering structures, and prolong its application life, have very important society, economic benefit.
Because the loading characteristic (poor) of flaky material itself as shear behavior, need in the prestressed stretch-draw anchor process by adjusting the stretch-draw direction of clipping ground tackle, guarantee between ground tackle and sheet material horizontal relative reversing (abbreviating " centering " as) not taken place, and then guarantee that sheet material only is a longitudinal tensile, horizontal shear stress does not appear in sheet material inside.Existing method for stretching is generally taked artificial centering (be to need accurately to demarcate earlier the ground tackle position at sheet material two ends before the stretch-draw, and ground tackle carefully is installed) or is taked anchoring system with special transfer.The method efficient of artificial centering is low, low precision, constructor and location instrument are had relatively high expectations, and construction is wasted time and energy, the centering effect is difficult to guarantee.Though the ground tackle with special transfer can be realized centering, its transfer structure relative complex makes that the ground tackle consumptive material is many, technology increases, processing request is higher, and cost of production increases, and ground tackle installation simultaneously and later stage maintenance all can be complicated more.
The utility model content
The purpose of this utility model is to provide a kind of sheet material stretching and anchoring device simple in structure, can in sheet material prestressed stretch-draw and anchoring process, realize the automatic centering of clipping ground tackle and sheet material, and then guarantee sheet material longitudinal tensile all the time, horizontal shear stress does not appear in inside.
For reaching above-mentioned purpose, the automatic centering stretching and anchoring device of the clipping ground tackle of a kind of prestressing force sheet material that the utility model provides, comprise clipping ground tackle (1), anchoring pedestal (2), hold power screw rod (3) and jack (4), key is: the front end of the described power of holding screw rod (3) is fixedlyed connected with described clipping ground tackle (1), its rear end is passed anchoring pedestal (2) successively, hinge cushion block (5), anchoring double nut (6), hold top board (7), anchor pressing plate (8) and adjusting nut (9), the axis of the described power of holding screw rod (3) is positioned on vertical middle section of clipping ground tackle (1), described anchoring pedestal (2), cut with scissors cushion block (5) and hold top board (7) and upward be the horizontal stripe hole for the hole that the described power of holding screw rod (3) passes, it is circular hole that described anchor pressing plate (8) is gone up the hole of passing for the described power of holding screw rod (3), and described jack (4) is placed in the left and right sides of the described power of holding screw rod (3) symmetrically; During stretch-draw, described adjusting nut (9) is pressed on the anchor pressing plate (8), described jack (4) pushing tow holds top board (7), describedly hold between top board (7) and the anchor pressing plate (8) hingedly and power passed to adjusting nut (9), finally apply stretching force to holding power screw rod (3) by adjusting nut (9) by curved surface; After stretch-draw was finished, turn anchoring double nut (6) was pressed on the anchoring pedestal (2) hinge cushion block (5), contacts pressure-bearing by curved surface between described hinge cushion block (5) and the anchoring pedestal (2).
This utility model is work like this: sheet material ground tackle clamping, and clipping ground tackle is connected with the power screw rod of holding, and prestressing force applies by the stretch-draw of holding the power screw rod is realized.During stretch-draw, the jacking force of jack passes to and holds the power screw rod and apply stretching force to holding the power screw rod by holding top board, anchor pressing plate, adjusting nut successively, the anchoring pedestal, cut with scissors cushion block and hold on the top board and be set to the horizontal stripe hole, hold the power screw rod enough activity spaces are arranged in the stretch-draw anchor process to satisfy for holding the hole that the power screw rod passes; Hold between top board and the anchor pressing plate by curved surface hingedly, the anchor pressing plate can be rotated along the contact surface that holds top board in stretching process, to guarantee sheet material axially loaded and horizontal shear stress can not occur all the time.To be tensioned after specify to require, adopt anchoring double nut and hinge cushion block to carry out directed anchoring, contact pressure-bearing by curved surface between hinge cushion block and anchoring pedestal.After anchoring was finished, Panasonic's adjusting nut retracted jack, uses when holding top board and anchor pressing plate in order to next stretch-draw.
Contacted curved surface is arc surface or sphere between described hinge cushion block (5) and the anchoring pedestal (2).
It is described that to hold the curved surface that is hinged between top board (7) and the anchor pressing plate (8) be arc surface.
The utility model can be widely used in having built or at the pre-stress construction of various engineering structuress such as bridge of building or building construction, be specially adapted to concrete beam, plate etc. is carried out the external prestressing construction, and its beneficial effect is:
1) clipping ground tackle is fixedlyed connected with holding between the power screw rod, and the pulling force that tensioning equipment can transmit when tension is bigger, and overall structure is more firm;
2) Path of Force Transfer is directly perceived, clear, guarantees sheet material longitudinal tensile all the time, and horizontal shear stress does not appear in inside, and prestressing force applies effective and simple in structure;
3) automatically realize that in stretching process clipping ground tackle and sheet material remain axis centering, simplified centering work, improved accuracy of alignment, and tensioning equipment can recycle, make the cost of construction lower, efficient is higher;
4) the directed anchorage style that adopts anchoring double nut and hinge cushion block to combine, anchoring effect is good;
5) adopt simple, light clipping ground tackle, reduced the material consumption and the technology difficulty of ground tackle product, production, maintenance cost reduce greatly.
Description of drawings
Structural representation when Fig. 1 is the utility model stretch-draw.
Structural representation when Fig. 2 is the utility model anchoring.
Fig. 3 is for holding one of hinged form of top board and anchor pressing plate curved surface in the utility model.
Fig. 4 is for holding two of the hinged form of top board and anchor pressing plate curved surface in the utility model.
Fig. 5 is for holding three of the hinged form of top board and anchor pressing plate curved surface in the utility model.
Fig. 6 is that the anchoring pedestal contacts one of form of pressure-bearing with hinge cushion block curved surface in the utility model.
Wherein: 1 clipping ground tackle, 2 anchoring pedestals, 3 hold the power screw rod, 4 jack, 5 hinge cushion blocks, 6 anchoring double nuts, 7 hold top board, 8 anchor pressing plates, 9 adjusting nuts, 10 prestressing force sheet materials, 11 steering columns.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The automatic centering tensioning equipment of the clipping ground tackle of prestressing force sheet material as shown in Figure 1 and Figure 2 by clipping ground tackle 1, anchoring pedestal 2, is held 3, two jack 4 of power screw rod, hinge cushion block 5, and anchoring double nut 6 holds top board 7, and anchor pressing plate 8 and adjusting nut 9 are formed.One end of prestressing force sheet material 10 is gripped by clipping ground tackle 1, is welded with one on the upper surface of clipping ground tackle 1 and holds power screw rod 3, or hold power screw rod 3 together with clipping ground tackle 1 casting.The axis of holding power screw rod 3 is positioned on vertical middle section of clipping ground tackle 1.The front end of holding power screw rod 3 is fixedlyed connected with clipping ground tackle 1, holds the rear end of power screw rod 3 and passes anchoring pedestal 2, hinge cushion block 5, anchoring double nut 6 successively, holds top board 7, anchor pressing plate 8 and adjusting nut 9.Anchoring pedestal 2, hinge cushion block 5 and holding have the horizontal stripe hole and pass for holding power screw rod 3 on the top board 7, have circular hole on the anchor pressing plate 8 and pass for holding power screw rod 3.Jack 4 is placed in the left and right sides of holding power screw rod 3 symmetrically, and the axis of jack 4 is parallel with the axis of holding power screw rod 3, and an end of jack 4 is placed on the anchoring pedestal 2, and the other end is towards holding top board 7.Hinge cushion block 5 is an arc surface towards the face of anchoring pedestal 2, and correspondingly, anchoring pedestal 2 is provided with the identical circular arc concave surface of radius of curvature that matches.Anchor pressing plate 8 is smooth arc surface towards the face that holds top board 7, correspondingly, hold top board 7 and be provided with smooth circular arc concave surface, but the radius of curvature of holding top board 7 circular arc concave surfaces is greater than the radius of curvature of anchor pressing plate 8 arc surfaces.
During concrete the construction, anchoring pedestal 2 is according to being installed to suitable position after the field lofting.Before the stretch-draw, tune adjusting nut 9 to compressing anchor pressing plate 8, start jack 4 again, jack 4 pushing tows hold top board 7, hold between top board 7 and the anchor pressing plate 8 hingedly and power passed to adjusting nut 9, and finally hold power screw rod 3 and apply stretching force by 9 pairs of adjusting nuts by the smooth arc surface of different curvature radius; After stretch-draw was finished, turn anchoring double nut 6 was pressed on the anchoring pedestal 2 hinge cushion block 5, and as shown in Figure 2, the arc surface by the same curvature radius between hinge cushion block 5 and the anchoring pedestal 2 contacts and pressure-bearing.
Fig. 3-5 has enumerated the other three kinds of curved surface articulated forms that hold top board 7 and anchor pressing plate 8:
Among Fig. 3, anchor pressing plate 8 is the plane towards the end face that holds top board 7, hold top board 7 and be provided with the arc surface of a protrusion towards the end face of anchor pressing plate 8, it is hinged by the arc surface of this protrusion with anchor pressing plate 8 to hold top board 7, and anchor pressing plate 8 can rotate around the arc surface that holds top board 7.
Among Fig. 4, anchor pressing plate 8 is the plane towards the end face that holds top board 7, hold top board 7 and also be the plane towards the end face of anchor pressing plate 8, with anchor pressing plate 8 the cylindrical steering column 11 that two central axiss overlap is set separately holding top board 7, it is hinged by the arc surface of steering column 11 with anchor pressing plate 8 to hold top board 7, and anchor pressing plate 8 can rotate around the arc surface of steering column 11.
Among Fig. 5, anchor pressing plate 8 is the plane towards the end face that holds top board 7, hold top board 7 and also be the plane towards the end face of anchor pressing plate 8, with anchor pressing plate 8 the elliptical cylinder-shape steering column 11 that two central axiss overlap is set separately holding top board 7, it is hinged by the elliptical arc surface of steering column 11 with anchor pressing plate 8 to hold top board 7, and anchor pressing plate 8 can rotate around the elliptical arc surface of steering column 11.
Fig. 6 shows anchoring pedestal 2 and contacts the pressure-bearing form with the another kind of curved surface of hinge cushion block 5: hinge cushion block 5 is a sphere towards the end face of anchoring pedestal 2, and correspondingly, anchoring pedestal 2 is provided with the identical spherical concave surface of radius that matches.
Claims (3)
1. the automatic centering stretching and anchoring device of the clipping ground tackle of prestressing force sheet material, comprise clipping ground tackle (1), anchoring pedestal (2), hold power screw rod (3) and jack (4), it is characterized in that: the front end of the described power of holding screw rod (3) is fixedlyed connected with described clipping ground tackle (1), its rear end is passed anchoring pedestal (2) successively, hinge cushion block (5), anchoring double nut (6), hold top board (7), anchor pressing plate (8) and adjusting nut (9), the axis of the described power of holding screw rod (3) is positioned on vertical middle section of clipping ground tackle (1), described anchoring pedestal (2), cut with scissors cushion block (5) and hold top board (7) and upward be the horizontal stripe hole for the hole that the described power of holding screw rod (3) passes, it is circular hole that described anchor pressing plate (8) is gone up the hole of passing for the described power of holding screw rod (3), and described jack (4) is placed in the left and right sides of the described power of holding screw rod (3) symmetrically; During stretch-draw, described adjusting nut (9) is pressed on the anchor pressing plate (8), described jack (4) pushing tow holds top board (7), describedly hold between top board (7) and the anchor pressing plate (8) hingedly and power passed to adjusting nut (9), finally apply stretching force to holding power screw rod (3) by adjusting nut (9) by curved surface; After stretch-draw was finished, turn anchoring double nut (6) was pressed on the anchoring pedestal (2) hinge cushion block (5), contacts pressure-bearing by curved surface between described hinge cushion block (5) and the anchoring pedestal (2).
2. according to the automatic centering tensioning equipment of the clipping ground tackle of the described prestressing force sheet material of claim 1, it is characterized in that: contacted curved surface is arc surface or sphere between described hinge cushion block (5) and the anchoring pedestal (2).
3. according to the automatic centering tensioning equipment of the clipping ground tackle of the described prestressing force sheet material of claim 1, it is characterized in that: described to hold the curved surface that is hinged between top board (7) and the anchor pressing plate (8) be arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200388112U CN202017304U (en) | 2011-02-15 | 2011-02-15 | Automatic centering tensioning anchoring device for prestress sheet material clamp type anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200388112U CN202017304U (en) | 2011-02-15 | 2011-02-15 | Automatic centering tensioning anchoring device for prestress sheet material clamp type anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202017304U true CN202017304U (en) | 2011-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200388112U Expired - Lifetime CN202017304U (en) | 2011-02-15 | 2011-02-15 | Automatic centering tensioning anchoring device for prestress sheet material clamp type anchor |
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| CN (1) | CN202017304U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127950A (en) * | 2011-02-15 | 2011-07-20 | 全恩懋 | Automatic centering tensioning and anchoring device for prestressed sheet clamping anchorage |
| CN103103924A (en) * | 2013-01-22 | 2013-05-15 | 北京工业大学 | Angle self-adaptation beam bridge vertical prestressing force tensioning counter-force seat |
| CN103343624A (en) * | 2013-07-29 | 2013-10-09 | 江苏省交通科学研究院股份有限公司 | Double-leg tensioning jack for thin-wall component |
| CN104727561A (en) * | 2015-04-02 | 2015-06-24 | 招商局重庆交通科研设计院有限公司 | Carbon fiber plate anchorage device limiting tensioning block |
| CN105332513A (en) * | 2015-12-11 | 2016-02-17 | 招商局重庆交通科研设计院有限公司 | Curved plate-type carbon fiber plate anchor device tensioning system |
| CN108643452A (en) * | 2018-04-10 | 2018-10-12 | 东南大学 | A kind of transverse prestress system and its construction method |
-
2011
- 2011-02-15 CN CN2011200388112U patent/CN202017304U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127950A (en) * | 2011-02-15 | 2011-07-20 | 全恩懋 | Automatic centering tensioning and anchoring device for prestressed sheet clamping anchorage |
| CN102127950B (en) * | 2011-02-15 | 2012-08-22 | 全恩懋 | Automatic centering tensioning and anchoring device for prestressed sheet clamping anchorage |
| CN103103924A (en) * | 2013-01-22 | 2013-05-15 | 北京工业大学 | Angle self-adaptation beam bridge vertical prestressing force tensioning counter-force seat |
| CN103103924B (en) * | 2013-01-22 | 2015-01-21 | 北京工业大学 | Angle self-adaptation beam bridge vertical prestressing force tensioning counter-force seat |
| CN103343624A (en) * | 2013-07-29 | 2013-10-09 | 江苏省交通科学研究院股份有限公司 | Double-leg tensioning jack for thin-wall component |
| CN103343624B (en) * | 2013-07-29 | 2015-12-23 | 苏交科集团股份有限公司 | For the double-legged stretch-draw jack of thin-wall member |
| CN104727561A (en) * | 2015-04-02 | 2015-06-24 | 招商局重庆交通科研设计院有限公司 | Carbon fiber plate anchorage device limiting tensioning block |
| CN105332513A (en) * | 2015-12-11 | 2016-02-17 | 招商局重庆交通科研设计院有限公司 | Curved plate-type carbon fiber plate anchor device tensioning system |
| CN108643452A (en) * | 2018-04-10 | 2018-10-12 | 东南大学 | A kind of transverse prestress system and its construction method |
| CN108643452B (en) * | 2018-04-10 | 2020-08-11 | 东南大学 | Transverse prestress system and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111026 Effective date of abandoning: 20120822 |