CN104652287B - Bridge prestress tensioning equipment - Google Patents
Bridge prestress tensioning equipment Download PDFInfo
- Publication number
- CN104652287B CN104652287B CN201510087501.2A CN201510087501A CN104652287B CN 104652287 B CN104652287 B CN 104652287B CN 201510087501 A CN201510087501 A CN 201510087501A CN 104652287 B CN104652287 B CN 104652287B
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- CN
- China
- Prior art keywords
- oil cylinder
- steel strand
- strand wires
- piston
- 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.)
- Expired - Fee Related
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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)
- Bridges Or Land Bridges (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a kind of bridge prestress tensioning equipment, including bridge, the stress hole being arranged in bridge, through described prestress hole steel strand wires, be snug fit at the front end cone-shaped clip of described steel strand wires and be oppositely arranged and the one-level oil cylinder that is interconnected and two-level oil cylinder；It is provided with in described one-level oil cylinder and fixes, with described steel strand wires, the first stage piston being connected, it is provided with for described front end cone-shaped clip being advanced the second piston in stress hole in described two-level oil cylinder, it is provided with for locking the elastic locking mechanism that second piston slides in and out in described two-level oil cylinder casing wall, its structure is improved ingenious, utilize piston action that cone-shaped clip heads into the Kong Weizhong of pre-buried ground tackle pad, and prevent resilience, it can be ensured that the construction quality of bridge。
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 with tensioning equipment extended steel twisted wire, on steel strand wires, cone-shaped clip it is set with after stretching, steel strand wires are utilized to be released the resilience of rear steel strand wires, cone-shaped clip is made to fill in the Kong Weizhong tensioning steel strand wires of pre-buried ground tackle pad, this way needs to apply the power bigger than the prestressing force of design by Method of Steel Strand Stretching, pulling force produces comparatively difficulty, particularly, after steel strand wires resilience, steel strand wires are applied to the prestressing force on bridge often has bigger difference with the prestressing force of design, construction quality is necessarily had a huge impact by this。
Therefore, it is an object of the invention to provide a kind of bridge prestress tensioning equipment, its structure is improved ingenious, utilizes piston action that cone-shaped clip heads into the Kong Weizhong of pre-buried ground tackle pad, and prevents resilience, it can be ensured that the construction quality of bridge, more convenient operation safety。
Summary of the invention
In view of this, it is an object of the invention to overcome defect of the prior art, it is provided that structure is improved ingenious, utilize piston action that cone-shaped clip heads into the Kong Weizhong of pre-buried ground tackle pad, and prevent resilience, it can be ensured that the construction quality of bridge, the bridge prestress tensioning equipment of more convenient operation safety
The bridge prestress tensioning equipment of the present invention, including bridge, the stress hole being arranged in bridge, through described prestress hole steel strand wires, be snug fit at the front end cone-shaped clip of described steel strand wires and be oppositely arranged and the one-level oil cylinder that is interconnected and two-level oil cylinder；It is provided with in described one-level oil cylinder and fixes, with described steel strand wires, the first stage piston being connected, being provided with in described two-level oil cylinder for described front end cone-shaped clip being advanced the second piston in stress hole, being provided with in described two-level oil cylinder casing wall for locking the elastic locking mechanism that second piston slides in and out；
Further, described elastic locking mechanism includes being resiliently attached to two-level oil cylinder's casing wall steel ball and being arranged at the groove that second piston sidewall coordinates with described steel ball；
Further, described elastic locking mechanism also includes being regulated screw by what screw thread was connected with two-level oil cylinder casing wall and being arranged at the spring regulated between screw and steel ball；
Further, described first stage piston and second piston are equipped with steel strand wires via, and described first stage piston outer end is fixed with one-level ground tackle, and described steel strand wires are connected through described steel strand wires via and by a rear end cone-shaped clip and one-level ground tackle are fixing；
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 wires are provided with strain gauge, and described first stage piston outer face is provided with the cavity holding strain gauge。
The invention has the beneficial effects as follows: the bridge prestress tensioning equipment of the present invention, steel strand wires 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, the in-oil cylinder first stage piston of one-level moves in the opposite direction with the second piston in two-level oil cylinder, first stage piston is fixing with steel strand wires to be connected and moves away from bridge, thus tension steel strand, second piston is locked by elastic locking mechanism, after the pulling force of steel strand wires reaches setting value, second piston can overcome and the latching force of elastic locking mechanism will be overcome towards the motion of bridge direction and to push in stress hole by front end cone-shaped clip, make steel strand wires fixing and bridge one end, and then prevent steel strand wires resilience, may insure that the construction quality of bridge, more convenient operation safety。
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the structural representation of the present invention。
Detailed description of the invention
Fig. 1 is the structural representation of the present invention；As shown in the figure, bridge 1 pre-stress stretching device of the present embodiment, including bridge 1, the stress hole being arranged in bridge 1, through described prestress hole steel strand wires, be snug fit at the front end cone-shaped clip 2 of described steel strand wires and be oppositely arranged and the one-level oil cylinder 4 that is interconnected and two-level oil cylinder 3；It is provided with in described one-level oil cylinder 4 and fixes the first stage piston 5 being connected with described steel strand wires, it is provided with for described front end cone-shaped clip 2 being advanced the second piston 10 in stress hole in described two-level oil cylinder 3, it is provided with in described two-level oil cylinder 3 casing wall for locking the elastic locking mechanism that second piston 10 slides in and out, steel strand wires 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 fixing with steel strand wires to be connected 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 wires reaches setting value, second piston 10 can overcome and the latching force of elastic locking mechanism will be overcome towards the motion of bridge 1 direction and to push in stress hole by front end cone-shaped clip 2, make steel strand wires fixing and bridge 1 one end, and then prevent steel strand wires resilience, may insure that the construction quality of bridge 1, more convenient operation safety。
In the present embodiment, described elastic locking mechanism includes being resiliently attached to two-level oil cylinder 3 casing wall steel ball 11 and being 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 locking the motion of second piston 10。
In the present embodiment, described elastic locking mechanism also includes being regulated screw 13 by what screw thread was connected with two-level oil cylinder 3 casing wall and being arranged at the spring 12 regulated between screw 13 and steel ball 11, the latching force of elastic locking mechanism can be regulated by turning adjusting screw 13, be finally reached the purpose regulating steel strand prestress size。
In the present embodiment, described first stage piston 5 is equipped with steel strand wires via with second piston 10, and described first stage piston 5 outer end is fixed with one-level ground tackle 8, and described steel strand wires are connected through described steel strand wires via and by a rear end cone-shaped clip is fixing with one-level ground tackle 8。
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 realizing the restriction to first piston maximum tension distance, it is to avoid broken by steel strand wires。
In the present embodiment, described steel strand wires are provided with strain gauge 9, and described first stage piston 5 outer face is provided with the cavity holding strain gauge 9, and strain gauge 9 can electrically connect a display for intuitively being shown by the reading of strain gauge 9。
What finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent replacement, without deviating from objective and the scope of technical solution of the present invention, it all should be encompassed in the middle of scope of the presently claimed invention。
Claims (3)
1. a bridge prestress tensioning equipment, it is characterised in that: the stress hole that include bridge, is arranged in bridge, through described stress hole steel strand wires, be snug fit at the front end cone-shaped clip of described steel strand wires and be oppositely arranged and the one-level oil cylinder that is interconnected and two-level oil cylinder；It is provided with in described one-level oil cylinder and fixes, with described steel strand wires, the first stage piston being connected, being provided with in described two-level oil cylinder for described front end cone-shaped clip being advanced the second piston in stress hole, being provided with in described two-level oil cylinder casing wall for locking the elastic locking mechanism that second piston slides in and out；Groove that described elastic locking mechanism includes steel ball, be arranged at the sidewall of second piston coordinates with described steel ball, regulate screw by what screw thread was connected with the casing wall of two-level oil cylinder and is arranged at the spring regulated between screw and steel ball；Described steel strand wires are provided with strain gauge, and described first stage piston outer face is provided with the cavity holding strain gauge；The electrical connection of described strain gauge and a display are for intuitively showing the reading of strain gauge。
2. bridge prestress tensioning equipment according to claim 1, it is characterized in that: described first stage piston and second piston are equipped with steel strand wires via, described first stage piston outer end is fixed with one-level ground tackle, and described steel strand wires are connected through described steel strand wires via and by a rear end cone-shaped clip and one-level ground tackle are fixing。
3. bridge prestress tensioning equipment according to claim 2, it is characterised in that: described first stage piston sidewall is provided with the spacing shaft shoulder, and described one-level oil cylinder outer end is provided with and coordinates spacing spacing ring with the described spacing shaft shoulder。
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 CN104652287A (en) | 2015-05-27 |
| CN104652287B true 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) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178195B (en) * | 2015-09-09 | 2017-03-15 | 重庆工商职业学院 | Anti-rebound steel strand wires tensioner |
| CN105239511B (en) * | 2015-09-09 | 2017-02-22 | 重庆工商职业学院 | Steel strand tension device |
| CN108716284B (en) * | 2018-06-08 | 2021-06-04 | 贵州中建建筑科研设计院有限公司 | Anti-rebound steel strand tensioner |
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104652287A (en) | 2015-05-27 |
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Granted publication date: 20160622 Termination date: 20170225 |