CN104652287A - Bridge pre-stress tension device - Google Patents
Bridge pre-stress tension device Download PDFInfo
- Publication number
- CN104652287A CN104652287A CN201510087501.2A CN201510087501A CN104652287A CN 104652287 A CN104652287 A CN 104652287A CN 201510087501 A CN201510087501 A CN 201510087501A CN 104652287 A CN104652287 A CN 104652287A
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- CN
- China
- Prior art keywords
- bridge
- steel strand
- piston
- oil cylinder
- level oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
- E01D2101/32—Metal prestressed
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a bridge pre-stress tension device. The bridge pre-stress tension device comprises a bridge, a stress hole formed in the bridge, a steel strand penetrating through the pre-stress hole, a front end conical clamping piece arranged on the front end of the steel strand in a sliding fit manner, and a primary cylinder and a secondary cylinder which are arranged oppositely and are communicated with each other; a primary piston fixedly connected with the steel strand is arranged in the primary cylinder; a secondary piston for pushing the front end conical clamping piece into the stress hole is arranged in the secondary cylinder; an elastic locking mechanism for locking the secondary piston to slide outward is arranged in the wall of the secondary cylinder. The structure improvement is novel, the conical clamping piece is pushed by the action of the piston into a hole in which an anchor pad is pre-embedded, and the rebound is prevented, so the construction quality of the bridge can be guaranteed.
Description
Technical field
The present invention relates to pre-stressed bridge field, specifically a kind of bridge prestress tensioning equipment.
Background technology
In the construction of bridge, need steel strand in the prestressed pipe of bridge, then tensioning equipment extended steel twisted wire is used, on steel strand, cone-shaped clip is set with after stretching, steel strand are utilized to be released the resilience of rear steel strand, cone-shaped clip is made to fill in the Kong Weizhong tensioning steel strand of pre-buried ground tackle pad, this way needs to apply the power larger than the prestressing force of design by Method of Steel Strand Stretching, pulling force produces comparatively difficulty, particularly, after steel strand resilience, the prestressing force that steel strand are applied on bridge often has larger difference with the prestressing force of design, this must have a huge impact workmanship.
Therefore, the object of this invention is to provide a kind of bridge prestress tensioning equipment, its structure is improved ingenious, utilizes piston action cone-shaped clip to be headed into the Kong Weizhong of pre-buried ground tackle pad, and prevents resilience, can guarantee the workmanship of bridge, more convenient operation safety.
Summary of the invention
In view of this, the object of the invention is to overcome defect of the prior art, provide structure to improve ingenious, piston action is utilized cone-shaped clip to be headed into the Kong Weizhong of pre-buried ground tackle pad, and prevent resilience, the workmanship of bridge can be guaranteed, the bridge prestress tensioning equipment of more convenient operation safety
Bridge prestress tensioning equipment of the present invention, comprise bridge, the stress hole be arranged in bridge, through described prestress hole steel strand, be snug fit at described steel strand front end cone-shaped clip and be oppositely arranged and the one-level oil cylinder be interconnected and two-level oil cylinder; The first stage piston be fixedly connected with described steel strand is provided with in described one-level oil cylinder, being provided with the second piston for being advanced by described front end cone-shaped clip in stress hole in described two-level oil cylinder, in described two-level oil cylinder casing wall, being provided with the elastic locking mechanism of outwards sliding for locking second piston;
Further, described elastic locking mechanism comprises elasticity and is connected to two-level oil cylinder's casing wall steel ball and is arranged at the groove that second piston sidewall coordinates with described steel ball;
Further, described elastic locking mechanism also comprises the adjustment screw be connected with two-level oil cylinder casing wall by screw thread and the spring be arranged between adjustment screw and steel ball;
Further, described first stage piston and second piston are equipped with steel strand via hole, and described first stage piston outer end is fixed with one-level ground tackle, and described steel strand are passed described steel strand via hole and are fixedly connected with one-level ground tackle by a rear end cone-shaped clip;
Further, described first piston sidewall is provided with the spacing shaft shoulder, and described first oil cylinder outer end is provided with and coordinates spacing spacing ring with the described spacing shaft shoulder;
Further, described steel strand are provided with tensiometer, and described first stage piston outer face is provided with the cavity holding tensiometer.
The invention has the beneficial effects as follows: bridge prestress tensioning equipment of the present invention, steel strand are through the stress hole on bridge, when after charged pressure oil in the one-level oil cylinder and two-level oil cylinder of this device, second piston in the in-oil cylinder first stage piston of one-level and two-level oil cylinder moves in the opposite direction, first stage piston is fixedly connected with steel strand and moves away from bridge, thus tension steel strand, second piston is locked by elastic locking mechanism, after the pulling force of steel strand reaches setting value, second piston can overcome and pushes stress hole in by front end cone-shaped clip by the latching force overcoming elastic locking mechanism towards the motion of bridge direction, steel strand are fixed and bridge one end, and then prevent steel strand resilience, the workmanship of bridge can be guaranteed, more convenient operation safety.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Fig. 1 is structural representation of the present invention, as shown in the figure, bridge 1 pre-stress stretching device of the present embodiment, comprise bridge 1, the stress hole be arranged in bridge 1, through described prestress hole steel strand, be snug fit at described steel strand front end cone-shaped clip 2 and be oppositely arranged and the one-level oil cylinder 4 be interconnected and two-level oil cylinder 3, the first stage piston 5 be fixedly connected with described steel strand is provided with in described one-level oil cylinder 4, the second piston 10 for being advanced by described front end cone-shaped clip 2 in stress hole is provided with in described two-level oil cylinder 3, the elastic locking mechanism of outwards sliding for locking second piston 10 is provided with in described two-level oil cylinder 3 casing wall, steel strand are through the stress hole on bridge 1, when after charged pressure oil in the one-level oil cylinder 4 and two-level oil cylinder 3 of this device, first stage piston 5 in one-level oil cylinder 4 moves in the opposite direction with the second piston 10 in two-level oil cylinder 3, first stage piston 5 is fixedly connected with steel strand and moves away from bridge 1, thus tension steel strand, second piston 10 is locked by elastic locking mechanism, after the pulling force of steel strand reaches setting value, second piston 10 can overcome and pushes stress hole in by front end cone-shaped clip 2 by the latching force overcoming elastic locking mechanism towards the motion of bridge 1 direction, steel strand are fixed and bridge 1 one end, and then prevent steel strand resilience, the workmanship of bridge 1 can be guaranteed, more convenient operation safety.
In the present embodiment, described elastic locking mechanism comprises elasticity and is connected to two-level oil cylinder 3 casing wall steel ball 11 and is arranged at the groove that second piston 10 sidewall coordinates with described steel ball 11, steel ball 11 is pressed in groove by resilient force, thus the motion of locking second piston 10.
In the present embodiment, described elastic locking mechanism also comprises the adjustment screw 13 be connected with two-level oil cylinder 3 casing wall by screw thread and the spring 12 be arranged between adjustment screw 13 and steel ball 11, can the latching force of adjustable elastic locking mechanism by turning adjusting screw 13, finally reach the object regulating steel strand prestress size.
In the present embodiment, described first stage piston 5 is equipped with steel strand via hole with second piston 10, and described first stage piston 5 outer end is fixed with one-level ground tackle 8, and described steel strand are passed described steel strand via hole and are fixedly connected with one-level ground tackle 8 by a rear end cone-shaped clip.
In the present embodiment, described first piston sidewall is provided with the spacing shaft shoulder 6, and described first oil cylinder outer end is provided with and coordinates spacing spacing ring 7 with the described spacing shaft shoulder 6, thus realizes the restriction to first piston maximum tension distance, avoids steel strand to break.
In the present embodiment, described steel strand are provided with tensiometer 9, and described first stage piston 5 outer face is provided with the cavity holding tensiometer 9, and tensiometer 9 can be electrically connected a display for intuitively being shown by the reading of tensiometer 9.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. a bridge prestress tensioning equipment, is characterized in that: comprise bridge, the stress hole be arranged in bridge, through described prestress hole steel strand, be snug fit at described steel strand front end cone-shaped clip and be oppositely arranged and the one-level oil cylinder be interconnected and two-level oil cylinder; The first stage piston be fixedly connected with described steel strand is provided with in described one-level oil cylinder, being provided with the second piston for being advanced by described front end cone-shaped clip in stress hole in described two-level oil cylinder, in described two-level oil cylinder casing wall, being provided with the elastic locking mechanism of outwards sliding for locking second piston.
2. bridge prestress tensioning equipment according to claim 1, is characterized in that: described elastic locking mechanism comprises elasticity and is connected to two-level oil cylinder's casing wall steel ball and is arranged at the groove that second piston sidewall coordinates with described steel ball.
3. bridge prestress tensioning equipment according to claim 2, is characterized in that: described elastic locking mechanism also comprises the adjustment screw be connected with two-level oil cylinder casing wall by screw thread and the spring be arranged between adjustment screw and steel ball.
4. bridge prestress tensioning equipment according to claim 3, it is characterized in that: described first stage piston and second piston are equipped with steel strand via hole, described first stage piston outer end is fixed with one-level ground tackle, and described steel strand are passed described steel strand via hole and are fixedly connected with one-level ground tackle by a rear end cone-shaped clip.
5. bridge prestress tensioning equipment according to claim 4, is characterized in that: described first piston sidewall is provided with the spacing shaft shoulder, and described first oil cylinder outer end is provided with and coordinates spacing spacing ring with the described spacing shaft shoulder.
6. bridge prestress tensioning equipment according to claim 5, is characterized in that: described steel strand are provided with tensiometer, and described first stage piston outer face is provided with the cavity holding tensiometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510087501.2A CN104652287B (en) | 2015-02-25 | 2015-02-25 | Bridge prestress tensioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510087501.2A CN104652287B (en) | 2015-02-25 | 2015-02-25 | Bridge prestress tensioning equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104652287A true CN104652287A (en) | 2015-05-27 |
| CN104652287B CN104652287B (en) | 2016-06-22 |
Family
ID=53243883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510087501.2A Expired - Fee Related CN104652287B (en) | 2015-02-25 | 2015-02-25 | Bridge prestress tensioning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104652287B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178195A (en) * | 2015-09-09 | 2015-12-23 | 重庆工商职业学院 | Anti-springback steel-strand tensioner |
| CN105239511A (en) * | 2015-09-09 | 2016-01-13 | 重庆工商职业学院 | Steel strand tension device |
| CN108716284A (en) * | 2018-06-08 | 2018-10-30 | 贵州中建建筑科研设计院有限公司 | Anti-rebound steel strand wires strainer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2092572U (en) * | 1991-04-07 | 1992-01-08 | 李素范 | Pre-stressed pulling anchor fastening device |
| JP2002213410A (en) * | 2001-01-12 | 2002-07-31 | Smc Corp | Fluid pressure cylinder with locking device |
| CN2851679Y (en) * | 2005-09-30 | 2006-12-27 | 北京市液压技术研究所 | Hydraulic cylinder with mechanical lock |
| CN202705897U (en) * | 2012-07-06 | 2013-01-30 | 安徽金星预应力工程技术有限公司 | High strength low retracting anchorage device |
| CN103174094A (en) * | 2013-03-15 | 2013-06-26 | 合肥惠利普电机有限公司 | Resilience prevention bridge girder prestress tension device |
| CN104006033A (en) * | 2014-05-09 | 2014-08-27 | 中船重工中南装备有限责任公司 | Powerful and mechanical automatic-locking hydraulic cylinder |
| CN203877835U (en) * | 2014-06-16 | 2014-10-15 | 肖树国 | Novel highway and bridge steel strand tensioning jack |
| CN204728209U (en) * | 2015-02-25 | 2015-10-28 | 林同棪国际工程咨询（中国）有限公司 | Bridge prestress tensioning equipment |
-
2015
- 2015-02-25 CN CN201510087501.2A patent/CN104652287B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2092572U (en) * | 1991-04-07 | 1992-01-08 | 李素范 | Pre-stressed pulling anchor fastening device |
| JP2002213410A (en) * | 2001-01-12 | 2002-07-31 | Smc Corp | Fluid pressure cylinder with locking device |
| CN2851679Y (en) * | 2005-09-30 | 2006-12-27 | 北京市液压技术研究所 | Hydraulic cylinder with mechanical lock |
| CN202705897U (en) * | 2012-07-06 | 2013-01-30 | 安徽金星预应力工程技术有限公司 | High strength low retracting anchorage device |
| CN103174094A (en) * | 2013-03-15 | 2013-06-26 | 合肥惠利普电机有限公司 | Resilience prevention bridge girder prestress tension device |
| CN104006033A (en) * | 2014-05-09 | 2014-08-27 | 中船重工中南装备有限责任公司 | Powerful and mechanical automatic-locking hydraulic cylinder |
| CN203877835U (en) * | 2014-06-16 | 2014-10-15 | 肖树国 | Novel highway and bridge steel strand tensioning jack |
| CN204728209U (en) * | 2015-02-25 | 2015-10-28 | 林同棪国际工程咨询（中国）有限公司 | Bridge prestress tensioning equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178195A (en) * | 2015-09-09 | 2015-12-23 | 重庆工商职业学院 | Anti-springback steel-strand tensioner |
| CN105239511A (en) * | 2015-09-09 | 2016-01-13 | 重庆工商职业学院 | Steel strand tension device |
| CN105239511B (en) * | 2015-09-09 | 2017-02-22 | 重庆工商职业学院 | Steel strand tension device |
| CN108716284A (en) * | 2018-06-08 | 2018-10-30 | 贵州中建建筑科研设计院有限公司 | Anti-rebound steel strand wires strainer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104652287B (en) | 2016-06-22 |
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Granted publication date: 20160622 Termination date: 20170225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |