CN204455853U - A kind of prestressed steel bar tensioning machine structure of sections pier shaft - Google Patents
A kind of prestressed steel bar tensioning machine structure of sections pier shaft Download PDFInfo
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- CN204455853U CN204455853U CN201520095211.8U CN201520095211U CN204455853U CN 204455853 U CN204455853 U CN 204455853U CN 201520095211 U CN201520095211 U CN 201520095211U CN 204455853 U CN204455853 U CN 204455853U
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- pier shaft
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Abstract
A kind of prestressed steel bar tensioning machine structure of sections pier shaft, it is characterized in that described stretch-draw mechanism is included in prestressed reinforcement stretch-draw end and is set with the isolation backing plate, stretching end nut and the stretch-draw spike that arrange, described stretch-draw spike is set with punching hydraulic top, and the hydraulically extensible portion of described prestressed reinforcement and described punching hydraulic top is fixedly installed.The prestressed steel bar tensioning machine structure of this sections pier shaft is reasonable in design, effectively easy to operate, and it can be carried out the spacing fixing of vertical direction to prestressed reinforcement and be realized the measurable tension operation of prestressed reinforcement by hydraulic mechanism, and efficiency of construction is high, and workload is low.
Description
Technical field
The prefabricated subsection pier shaft that the utility model belongs to overhead road bridge carries out auxiliary equipment during prestressed reinforcement stretch-draw, is specifically related to a kind of prestressed steel bar tensioning machine structure of the sections pier shaft used during tensioning after sections pier shaft being carried out to prestressed reinforcement and connecting.
Background technology
Along with the development of bridge and overhead road bridge technology, marine or become the important engineering of bridge construction across the overhead road bridge construction in waters.Due to viaduct many employings Steel Continuous Box beam bridge, the supporter of non-navigation bridge mostly is prefabricate and install pier structure, can be divided into overall pier, cushion cap adds lower joint pier shaft, middle joint pier shaft and upper joint pier shaft Four types by classification.Because the overall weight of prefabricated pier shaft can reach more than 2000 ton, how to carry out effectively and safty hoisting and location and installation become the important technological problems needing solution, therefore can multi-segmental be divided into carry out pier shaft when carrying out prefabricated prefabricated, and then carry out on-the-spot docking construction.
Segmented pier shaft can because can there is certain subtle flow or stressed change in the various factors such as the position of manufacturing process and load-bearing and internal stress after docking, effectively must eliminate it, to increase the stability after the docking of sections pier shaft and fastness.Inventor has invented a kind of employing runs through the prestressed reinforcement that sections pier shaft carries out arranging and carries out tension operation, eliminates prestressing force and improves docking firmness and stability.But prestressed reinforcement needs the sections pier shaft realized under certain stretching force effect docking to carry out stretching construction.
Utility model content
The utility model provides a kind of prestressed steel bar tensioning machine structure of effective sections pier shaft reasonable in design, easy to operate, it can be carried out the spacing fixing of vertical direction to prestressed reinforcement and be realized the measurable tension operation of prestressed reinforcement by hydraulic mechanism, efficiency of construction is high, and workload is low.
The technical solution adopted in the utility model is as follows:
A kind of prestressed steel bar tensioning machine structure of sections pier shaft, it is characterized in that described stretch-draw mechanism is included in prestressed reinforcement stretch-draw end and is set with the isolation backing plate, stretching end nut and the stretch-draw spike that arrange, described stretch-draw is supportted on 1 pin and is set with punching hydraulic top, and the hydraulically extensible portion of described prestressed reinforcement and described punching hydraulic top is fixedly installed.
Concretely, described isolation backing plate is the steel plate that pier shaft top steel bracket platform carries setting relatively, and described isolation backing plate is fixedly installed by spacing between stretching end nut and prestressed reinforcement.
In one embodiment, a spherical backing plate is set between described isolation backing plate and described stretching end nut.
In one embodiment, described stretch-draw spike comprises a support and is located at steel cylinder main body on described isolation backing plate, squats and establish the punching hydraulic top of vertical telescopic in the upper end of its steel cylinder main body.
In one embodiment, the hydraulically extensible portion of described punching hydraulic top and prestressed reinforcement are set with fixing cushion block and tool ends end nut and drive and arrange.
In another embodiment, be provided with attaching nut in described stretch-draw spike, the end of prestressed reinforcement axially docks with a bar reinforcement by this attaching nut, and the hydraulically extensible portion of bar reinforcement and punching hydraulic top is fixedly installed.
Because sections pier shaft and reinforcing bar bellows place have employed thin wall construction, thickness is little, is not easy to the safety operation of stretching construction, steel bracket platform can be adopted all to be covered by whole pier shaft hollow parts.Isolation backing plate has larger face area, can provide the stability bearing capacity between steel bracket platform.Stretching end nut installed by isolation backing plate, and stretching end nut sleeve to be contained on prestressed reinforcement and to be threaded, and tensioning nut is spacing fixing by realizing between prestressed reinforcement and isolation backing plate.When the jacking of punching hydraulic top, prestressed reinforcement is stretched to certain displacement, can realize the stretch-draw location of prestressed reinforcement by screwing stretching end nut.Stretch-draw spike can provide the operating space of stretching end nut.Tool ends end nut by prestressed reinforcement is arranged between punching hydraulic top and prestressed reinforcement realizes spacing driving.
The beneficial effects of the utility model are, the prestressed steel bar tensioning machine structure of this sections pier shaft is reasonable in design, effectively easy to operate, it can be carried out the spacing fixing of vertical direction to prestressed reinforcement and be realized the measurable tension operation of prestressed reinforcement by hydraulic mechanism, efficiency of construction is high, and workload is low.
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
Accompanying drawing explanation
Fig. 1 is the cut-away section structural representation of the utility model specific embodiment.
Detailed description of the invention
As shown in Figure 1, the prestressed steel bar tensioning machine structure of this sections pier shaft has to be set with from bottom to top in prestressed reinforcement stretch-draw end and arranges isolation backing plate 11, stretching end nut 13 and stretch-draw spike 22, isolation backing plate 112 is the steel plate that pier shaft top steel bracket platform carries setting relatively, and described isolation backing plate is fixedly installed by spacing between stretching end nut 13 and prestressed reinforcement 10.Between isolation backing plate and described stretching end nut, one spherical backing plate 12 is set.Stretch-draw spike 22 comprises a support and is located at steel cylinder main body on described isolation backing plate, squats and establish the punching hydraulic top 23 of vertical telescopic in the upper end of its steel cylinder main body.Stretch-draw spike is set with punching hydraulic top 23, the hydraulically extensible portion of described prestressed reinforcement and described punching hydraulic top is fixedly installed.The hydraulically extensible portion of punching hydraulic top and prestressed reinforcement are set with fixing cushion block 24 and tool ends end nut 15 to drive and arrange.In embody rule, if the length of prestressed reinforcement cannot meet, can arrange attaching nut 21 in stretch-draw spike, the end of prestressed reinforcement axially docks with a bar reinforcement by this attaching nut, and the hydraulically extensible portion of bar reinforcement and punching hydraulic top is fixedly installed.
Claims (6)
1. the prestressed steel bar tensioning machine structure of a sections pier shaft, it is characterized in that described stretch-draw mechanism is included in prestressed reinforcement stretch-draw end and is set with the isolation backing plate, stretching end nut and the stretch-draw spike that arrange, described stretch-draw spike is set with punching hydraulic top, and the hydraulically extensible portion of described prestressed reinforcement and described punching hydraulic top is fixedly installed.
2. the prestressed steel bar tensioning machine structure of sections pier shaft according to claim 1, it is characterized in that described isolation backing plate is the steel plate that pier shaft top steel bracket platform carries setting relatively, described isolation backing plate is fixedly installed by spacing between stretching end nut and prestressed reinforcement.
3. the prestressed steel bar tensioning machine structure of sections pier shaft according to claim 1, is characterized in that arranging a spherical backing plate between described isolation backing plate and described stretching end nut.
4. the prestressed steel bar tensioning machine structure of sections pier shaft according to claim 1, it is characterized in that described stretch-draw spike comprises a support and is located at steel cylinder main body on described isolation backing plate, squats and establishes the punching hydraulic top of vertical telescopic in the upper end of its steel cylinder main body.
5. the prestressed steel bar tensioning machine structure of sections pier shaft according to claim 1, is characterized in that the hydraulically extensible portion of described punching hydraulic top and prestressed reinforcement are set with fixing cushion block and tool ends end nut and drives and arrange.
6. the prestressed steel bar tensioning machine structure of sections pier shaft according to claim 1, it is characterized in that being provided with attaching nut in described stretch-draw spike, the end of prestressed reinforcement axially docks with a bar reinforcement by this attaching nut, and the hydraulically extensible portion of bar reinforcement and punching hydraulic top is fixedly installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520095211.8U CN204455853U (en) | 2015-02-10 | 2015-02-10 | A kind of prestressed steel bar tensioning machine structure of sections pier shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520095211.8U CN204455853U (en) | 2015-02-10 | 2015-02-10 | A kind of prestressed steel bar tensioning machine structure of sections pier shaft |
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| CN204455853U true CN204455853U (en) | 2015-07-08 |
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| CN201520095211.8U Active CN204455853U (en) | 2015-02-10 | 2015-02-10 | A kind of prestressed steel bar tensioning machine structure of sections pier shaft |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021249A (en) * | 2019-03-28 | 2020-04-17 | 临沂市政集团有限公司 | Construction device and construction method for prestressed steel bundles |
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2015
- 2015-02-10 CN CN201520095211.8U patent/CN204455853U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021249A (en) * | 2019-03-28 | 2020-04-17 | 临沂市政集团有限公司 | Construction device and construction method for prestressed steel bundles |
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| GR01 | Patent grant |