CN202123568U - Depth-adjustable limiting plate used for high speed rail construction - Google Patents
Depth-adjustable limiting plate used for high speed rail construction Download PDFInfo
- Publication number
- CN202123568U CN202123568U CN2011200289418U CN201120028941U CN202123568U CN 202123568 U CN202123568 U CN 202123568U CN 2011200289418 U CN2011200289418 U CN 2011200289418U CN 201120028941 U CN201120028941 U CN 201120028941U CN 202123568 U CN202123568 U CN 202123568U
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- depth
- limited block
- limiting plate
- limiting block
- compression spring
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Abstract
The utility model discloses a depth-adjustable limiting plate used for high speed rail construction, which comprises an annular outer limiting block and an inner limiting block; the inner wall of the outer limiting block is in threaded connection with the outer wall of the inner limiting block; the outer limiting block is provided with a radical through hole; a steel ball is arranged in the through hole; a compression spring is pressed on the steel ball; the top end of the compression spring is provided with a bolt; and a coaxial locking slot is arranged on the side wall of the inner limiting block. In use, one depth-adjustable limiting plate can replace seven limiting plates with seven different limiting depths. The depth-adjustable limiting plate is convenient to operate and is more practical.
Description
Technical field
The utility model relates to the high ferro technical field of construction, specifically belongs to the high ferro construction with depth-adjustment formula limiting plate.
Background technology
For saving the area, the elevated bridge rail is adopted in the most of highway section of the construction of high ferro and Line for Passenger Transportation, produces precast beam at beam making field earlier, sets a roof beam in place then.
Prestressing technique is the key technology during prestress box beam is made; Promptly be through the underrelaxation high strength steel strand (intensity reaches 1860MPa) of some in the inner preformed hole of concrete component, on the steel wire bundle at concrete component two ends, install strand tapered anchorage then, through tensioner stretch-draw steel strand wires such as hydraulic jack; Grasp steel strand wires with ground tackle; Apply about 6000 tons of pressure to beams of concrete, make beam body antiarch, offset external load; Improve the bearing strength of beam body, make the beam body have good cracking resistance and earthquake resistance and prevention performance simultaneously.
High ferro case beam length is generally 32m, wears 25～27 bundle presstressed reinforcing steels, and every bundle has 7～12 steel strand wires, and the strand tapered anchorage of the corresponding specification of more than 50 covers is installed, and carries out tensioning construction.
In the concrete beam body reserving hole channel, put on steel strand wires, successively installment work anchor slab, work clip sheet, limiting plate, jack, instrument anchor slab and instrument intermediate plate.
After striking the clamping tool intermediate plate, start oil pump to the jack fuel feeding, piston moves, and through moveable anchor extended steel twisted wire, at this moment work clip sheet is taken out of from the work anchor slab by steel strand wires, and the size of taking out of is controlled by limiting plate.
After pulling force reaches design load, unloading, the steel strand wires retraction utilizes the screen resilience of steel strand wires to bring intermediate plate in the anchor slab taper hole into, thereby grasps steel strand wires, forms permanent anchoring unit.
What sheet clamping type group anchor adopted is from the anchor mode, so the spacing degree of depth of limiting plate is had relatively high expectations.If the spacing degree of depth of limiting plate is bigger than normal, the frictional force between intermediate plate internal tooth and the steel strand wires diminishes, and the amount of recovery of steel strand wires will increase in the anchor process, even the situation that intermediate plate can't clip steel strand wires (stripped thread) occurs.If the spacing degree of depth is less than normal, intermediate plate and steel strand wires contact-making surface increase, and meeting serious damage steel strand wires during stretch-draw make the pulling force loss become big, even can bite steel strand wires broken, perhaps make the internal tooth loss of intermediate plate, cause stripped thread.
Adopt nominal diameter
15.2mm of steel strand wires in the construction of high ferro construction at present, the diameter permissible variation is
mm.
According to Ministry of Railways's industry standard requirement, to select the limiting plate of the different spacing degree of depth in the stretching construction for use according to the diameter of steel strand wires.When the steel strand wires diameter is
15.2mm; The spacing degree of depth of limiting plate is 8.0mm; When the steel strand wires increasing diameter adds deduct little 0.1mm; Design the spacing degree of depth and just increase or reduce 0.4mm relatively; Therefore beam making field is equipped with the limiting plate of the different spacing degree of depth for every kind of steel strand wires diameter dimension and every kind of specification ground tackle in the practice of construction process.Therefore often select the ground tackle of several kinds of specifications on the high ferro beam body for use, will purchase up to a hundred of all size limiting plates, select for use and purchase to engineering construction and caused trouble.
The utility model content
The purpose of the utility model provides a kind of high ferro construction with depth-adjustment formula limiting plate; Scale of the every rotation of inner limited block can be adjusted spacing degree of depth 0.4mm, in the use, and the limiting plate of alternative 7 the spacing degree of depth of difference of depth-adjustment formula limiting plate; And it is easy to operate, practical more.
The technical scheme that the utility model adopts is following:
The high ferro construction is with depth-adjustment formula limiting plate; The outer limited block, the inner limited block that comprise ring-type, the inwall of outer limited block and the outer wall of inner limited block are through being threaded, and outer limited block offers screwed hole radially; Screwed hole is built-in with steel ball; Press on the steel ball and be equipped with the compression spring, the top of compression spring is provided with screw, and the sidewall of inner limited block is provided with axial locking slot.
Described locking slot has five, is uniformly distributed on the sidewall of inner limited block.
The course of work of the utility model is:
1, common limiting plate is decomposed into inner limited block and outer limited block, is threaded with M120 * 2.
2, in the limited block compression spring, steel ball and sunk screw are installed outside, on the external screw thread of inner limited block, are opened 5 evenly divided grooves, scale of the every rotation of inner limited block can be adjusted spacing degree of depth 0.4mm.
3, rotate to set scale when inner limited block, the steel ball in the outer limited block just is stuck in the scale groove of inner limited block, realizes inside and outside limited block location.
4, different size ground tackle adapted limiting plate only need be changed corresponding inner limited block.
Compared with present technology, the beneficial effect of the utility model is following:
In the use, the limiting plate of alternative 7 the spacing degree of depth of difference of depth-adjustment formula limiting plate for the ground tackle of different size, only needs to change inner limited block and just can reach requirement, and is easy to operate, rapidly, practical more.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the side view of the utility model.
The specific embodiment
Referring to accompanying drawing, high ferro is constructed with depth-adjustment formula limiting plate, comprises outer limited block 1, the inner limited block 2 of ring-type; The inwall of outer limited block 1 is connected with the outer wall thread of inner limited block 2, and outer limited block offers screwed hole radially, and screwed hole is built-in with steel ball 3; Press on the steel ball 3 to be equipped with compression spring 4, the top of compression spring 4 is provided with screw 6, and the sidewall of inner limited block is provided with axial locking slot 5; Locking slot 5 has five, is uniformly distributed on the sidewall of inner limited block.
Claims (2)
1. the high ferro construction is with depth-adjustment formula limiting plate; It is characterized in that: comprise outer limited block, the inner limited block of ring-type, the inwall of outer limited block and the outer wall of inner limited block are through being threaded, and outer limited block offers screwed hole radially; Screwed hole is built-in with steel ball; Press on the steel ball and be equipped with the compression spring, the top of compression spring is provided with screw, and the sidewall of inner limited block is provided with axial locking slot.
2. construct with depth-adjustment formula limiting plate according to the said high ferro of claim 1, it is characterized in that: described locking slot has five, is uniformly distributed on the sidewall of inner limited block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200289418U CN202123568U (en) | 2011-01-28 | 2011-01-28 | Depth-adjustable limiting plate used for high speed rail construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200289418U CN202123568U (en) | 2011-01-28 | 2011-01-28 | Depth-adjustable limiting plate used for high speed rail construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202123568U true CN202123568U (en) | 2012-01-25 |
Family
ID=45486639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200289418U Expired - Fee Related CN202123568U (en) | 2011-01-28 | 2011-01-28 | Depth-adjustable limiting plate used for high speed rail construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202123568U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633431A (en) * | 2014-12-26 | 2015-05-20 | 苏州安特实业有限公司 | Limiting plate |
-
2011
- 2011-01-28 CN CN2011200289418U patent/CN202123568U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633431A (en) * | 2014-12-26 | 2015-05-20 | 苏州安特实业有限公司 | Limiting plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: He Yong Inventor after: Yu Haiping Inventor after: Xu Xianjun Inventor after: Yang Fang Inventor after: Gao Huiyang Inventor after: Chen Yiqiang Inventor after: Wang Zhongbao Inventor after: Wang Wei Inventor after: Sun Weiguo Inventor before: Yu Haiping Inventor before: Xu Xianjun Inventor before: Yang Fang Inventor before: Gao Huiyang Inventor before: Chen Yiqiang Inventor before: Wang Zhongbao Inventor before: Wang Wei Inventor before: Sun Weiguo |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YU HAIPING XU XIANJUN YANG FANG GAO HUIYANG CHEN YIQIANG WANG ZHONGBAO WANG WEI SUN WEIGUO TO: HE YONG YU HAIPING XU XIANJUN YANG FANG GAO HUIYANG CHEN YIQIANG WANG ZHONGBAO WANG WEI SUN WEIGUO |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20190128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |