CN203200661U - Resilience prevention bridge girder prestress tension device - Google Patents
Resilience prevention bridge girder prestress tension device Download PDFInfo
- Publication number
- CN203200661U CN203200661U CN 201320120196 CN201320120196U CN203200661U CN 203200661 U CN203200661 U CN 203200661U CN 201320120196 CN201320120196 CN 201320120196 CN 201320120196 U CN201320120196 U CN 201320120196U CN 203200661 U CN203200661 U CN 203200661U
- Authority
- CN
- China
- Prior art keywords
- piston
- bridge
- oil cylinder
- steel strand
- ground tackle
- 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 - Lifetime
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Abstract
The utility model discloses a resilience prevention bridge girder prestress tension device. The resilience prevention bridge girder prestress tension device comprises a primary oil cylinder and a secondary oil cylinder, wherein a primary piston in the primary oil cylinder and a secondary piston in the secondary oil cylinder move in the different directions, the primary piston is connected with a primary anchorage device, the secondary piston is connected with a secondary anchorage device, a steel strand penetrating through a bridge girder stress hole penetrates through the secondary anchorage device and the primary anchorage device and is fixedly connected with the secondary anchorage device and the primary anchorage device, a front end tapered clamping piece and a rear end tapered clamping piece are sleeved at the front end and the rear end of the steel strand respectively, a hole site, corresponding to the front end tapered clamping piece, of an embedded anchorage device pad is formed in a bridge girder, and the front end tapered clamping piece is jacked into the hole site of the embedded anchorage device pad along with the motion of the secondary piston. The resilience prevention bridge girder prestress tension device is delicate in structural modification, the front end tapered clamping piece is jacked into the hole site of the embedded anchorage device pad by utilizing the motion of the piston to prevent resilience, the project quality of a bridge girder can be guaranteed, and the operation is more convenient and safer.
Description
Technical field
The utility model relates to bridge machinery, mainly is a kind of anti-resilience bridge prestress tensioning equipment.
Background technology
In the construction of bridge, need be in the prestressed pipe of bridge steel strand, use tensioning equipment extended steel twisted wire then, back suit cone-shaped clip on steel strand stretches, utilize steel strand to be released the resilience of back steel strand, make cone-shaped clip fill in the Kong Weizhong tensioning steel strand of pre-buried ground tackle pad, the bigger power of prestressing force that this way need apply than design stretches steel strand, pulling force produces comparatively difficulty, particularly, after the steel strand resilience, the prestressing force that steel strand are applied on the bridge often has bigger difference with the prestressing force that designs, and this must produce very big influence to workmanship.
The utility model content
Technical problem to be solved in the utility model provides a kind of anti-resilience bridge prestress tensioning equipment, its architecture advances is ingenious, utilizes piston action that cone-shaped clip is headed into the Kong Weizhong of pre-buried ground tackle pad, and prevents resilience, can guarantee the workmanship of bridge, more convenient operation safety.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of anti-resilience bridge prestress tensioning equipment, include bridge, bridge is provided with the stress hole, there are steel strand to pass stress hole on the bridge, it is characterized in that: also include one-level oil cylinder and two-level oil cylinder, second piston in the in-oil cylinder first stage piston of described one-level and the two-level oil cylinder moves in the opposite direction, and second piston is towards the direction motion of bridge; Install respectively on the end of described first stage piston and the end of second piston and be connected with one-level ground tackle and secondary ground tackle, described steel strand pass from secondary ground tackle and one-level ground tackle and fixedly connected with it, be respectively installed with front end cone-shaped clip, rear end cone-shaped clip on the described steel strand front-end and back-end, the front end cone-shaped clip of corresponding steel strand front end is provided with the position, hole of pre-buried ground tackle pad on the described bridge, and described front end cone-shaped clip pushes into the Kong Weizhong of pre-buried ground tackle pad along with the activity of second piston.
Described two-level oil cylinder is in the side near bridge, the dead ahead of the front end cone-shaped clip secondary ground tackle on second piston on the described steel strand front end.
The one-level oil cylinder is opposite with two-level oil cylinder's opening direction in the utility model, the direction of motion of first stage piston and second piston is also opposite naturally, two-level oil cylinder is in the side near bridge, second piston is towards the direction motion of bridge, when construction, suit front end cone-shaped clip on steel strand at first, then steel strand are fixed on secondary ground tackle and the one-level ground tackle, and at suit rear end, steel strand rear end cone-shaped clip, first stage piston action then, when the tension steel strand arrive predetermined pull, last second piston action, the Kong Weizhong that the front end cone-shaped clip is headed into pre-buried ground tackle pad prevents resilience, and after first stage piston and second piston were let out power, steel strand can resilience yet, first stage piston action applies answer in advance stretching force be exactly bridge design answer stretching force in advance, can guarantee the workmanship of bridge and since first stage piston apply answer in advance stretching force less than tradition retraction mode tensioning equipment required answer stretching force in advance, implement and be more prone to.
The utility model has the advantages that:
The utility model architecture advances is ingenious, utilizes piston action that cone-shaped clip is headed into the Kong Weizhong of pre-buried ground tackle pad, and prevents resilience, can guarantee the workmanship of bridge, more convenient operation safety.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Referring to Fig. 1, a kind of anti-resilience bridge prestress tensioning equipment, include bridge 5, bridge 5 is provided with stress hole 12, there are steel strand 6 to pass stress hole on the bridge, also include one-level oil cylinder 1 and two-level oil cylinder 2, second piston 4 in the in-oil cylinder first stage piston 3 of described one-level and the two-level oil cylinder moves in the opposite direction, second piston 4 is towards the direction motion of bridge, install respectively on the end of the end of described first stage piston 3 and second piston 4 and be connected with one-level ground tackle 8 and secondary ground tackle 10, described steel strand 6 pass from secondary ground tackle 10 and one-level ground tackle 8 and fixedly connected with it, described steel strand are respectively installed with front end cone-shaped clip 7 on 6 front-end and back-end, rear end cone-shaped clip 11, the front end cone-shaped clip 7 of corresponding steel strand front end is provided with the position, hole 9 of pre-buried ground tackle pad on the described bridge 5, and described front end cone-shaped clip 7 pushes into the Kong Weizhong 9 of pre-buried ground tackle pad along with the activity of second piston 4.
Described two-level oil cylinder 2 is in the side near bridge 5, the dead ahead of the front end cone-shaped clip 7 secondary ground tackle 10 on second piston on described steel strand 6 front ends.
When construction, after steel strand 6 being passed the stress hole 12 of bridge 5, at steel strand 6 cover front end dress cone-shaped clips 7, then steel strand are fixed on secondary ground tackle 10 and the one-level ground tackle 8, and on the steel strand rear end suit rear end cone-shaped clip 11, first stage piston 3 actions then, tension steel strand 6, last second piston 4 actions, front end is adorned in the position, hole 9 that cone-shaped clip 7 heads into pre-buried ground tackle pad, after first stage piston 3 and second piston 4 are let out power, steel strand 6 can resilience yet, first stage piston 3 actions apply answer in advance stretching force be exactly bridge 5 designs answer stretching force in advance, can guarantee the workmanship of bridge, since first stage piston 3 applies answer in advance stretching force less than tradition retraction mode tensioning equipment required answer stretching force in advance, implement and be more prone to.
Claims (2)
1. anti-resilience bridge prestress tensioning equipment, include bridge, bridge is provided with the stress hole, there are steel strand to pass stress hole on the bridge, it is characterized in that: also include one-level oil cylinder and two-level oil cylinder, second piston in the in-oil cylinder first stage piston of described one-level and the two-level oil cylinder moves in the opposite direction, and second piston is towards the direction motion of bridge; Install respectively on the end of described first stage piston and the end of second piston and be connected with one-level ground tackle and secondary ground tackle, described steel strand pass from secondary ground tackle and one-level ground tackle and fixedly connected with it, be respectively installed with front end cone-shaped clip, rear end cone-shaped clip on the described steel strand front-end and back-end, the front end cone-shaped clip of corresponding steel strand front end is provided with the position, hole of pre-buried ground tackle pad on the described bridge, and described front end cone-shaped clip pushes into the Kong Weizhong of pre-buried ground tackle pad along with the activity of second piston.
2. a kind of anti-resilience bridge prestress tensioning equipment according to claim 1 is characterized in that: described two-level oil cylinder is in the side near bridge, the dead ahead of the front end cone-shaped clip secondary ground tackle on second piston on the described steel strand front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320120196 CN203200661U (en) | 2013-03-15 | 2013-03-15 | Resilience prevention bridge girder prestress tension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320120196 CN203200661U (en) | 2013-03-15 | 2013-03-15 | Resilience prevention bridge girder prestress tension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203200661U true CN203200661U (en) | 2013-09-18 |
Family
ID=49144785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320120196 Expired - Lifetime CN203200661U (en) | 2013-03-15 | 2013-03-15 | Resilience prevention bridge girder prestress tension device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203200661U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105178195A (en) * | 2015-09-09 | 2015-12-23 | 重庆工商职业学院 | Anti-springback steel-strand tensioner |
-
2013
- 2013-03-15 CN CN 201320120196 patent/CN203200661U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105178195A (en) * | 2015-09-09 | 2015-12-23 | 重庆工商职业学院 | Anti-springback steel-strand tensioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130918 |