CN2825587Y - Integrated top-pressing jack - Google Patents
Integrated top-pressing jack Download PDFInfo
- Publication number
- CN2825587Y CN2825587Y CN 200520075753 CN200520075753U CN2825587Y CN 2825587 Y CN2825587 Y CN 2825587Y CN 200520075753 CN200520075753 CN 200520075753 CN 200520075753 U CN200520075753 U CN 200520075753U CN 2825587 Y CN2825587 Y CN 2825587Y
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- pressing
- built
- stretch
- roof pressure
- 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 relates to an integrated top-pressing jack which is mainly used for the tensioning and anchoring construction of group anchors with steel stranded wires in the construction of roads and bridges. The utility model comprises a top-pressing oil cylinder (1), a built-in top-pressing device (2), a tensioning oil cylinder (3), a tool anchoring plate (4), a tool clamping sheet (5) and a top-pressing plate (6), wherein a cylinder body (1.1) of the top-pressing oil cylinder (1) is axially and fixedly connected with a cylinder body (3.1) of the tensioning oil cylinder (3), and the built-in top-pressing device (2) is axially and fixedly connected in the cylinder bodies (1.1) and (3.1) of the top-pressing oil cylinder (1) and the tensioning oil cylinder (3); pistons (1.2) and (3.2) of the top-pressing oil cylinder (1) and the tensioning oil cylinder (3) are sheathed on the built-in top-pressing device (2), and the tool anchoring plate (4) is fixedly connected with the outer end of the piston (3.2) of the tensioning oil cylinder (3); the tool clamping sheet (5) is axially inlaid and arranged in the tool anchoring plate (4), the top-pressing plate (6) is arranged on the front side of the built-in top-pressing device (2) and is fixedly connected with the outer end of the piston (1.2) of the top-pressing oil cylinder (1). The utility model adopts to anchor in an active mode, namely, steel stranded wires immediately prop and press the clamping sheet after being tensioned, so the retracting values of the steel stranded wires are reduced, thereby, the errors of the cable forces of the steel stranded wires are realized to satisfy design requirements.
Description
Technical field:
The utility model relates to a kind of jack, is specifically related to a kind of whole roof pressure jack.Be mainly used in steel strand group anchor stretch-draw anchor construction in the road and bridge construction.
Background technology:
In the road and bridge construction, steel strand group anchor stretch-draw anchor mode is generally " from anchor " formula at present, the stretch-draw and the anchoring that promptly utilize feedthrough jack and the instrument ground tackle that matches with group's anchor and positioning plate to carry out steel strand.Its principle is: many steel strand are successively by work ground tackle, positioning plate, feedthrough jack and instrument ground tackle.During stretch-draw, the feedthrough jack cylinder protracts, and promotes the instrument ground tackle, and the intermediate plate on the instrument ground tackle clamps and also drives steel strand and stretch, and this moment, work clip sheet was limited in mobilely and unlikely in certain stroke deviating from from the work anchor slab.After the load on the steel strand and elongation reached requirement, the feedthrough jack cylinder retreated, and this moment, work clip sheet was driven by the steel strand retraction force in the taper hole that enters on the work anchor slab, realized " anchoring automatically ".
" from anchor " formula stretch-draw anchor mode has characteristics simple to operate, but because the anchorage style of work ground tackle is to drive the taper hole that work clip sheet enters the work anchor slab by steel strand, belong to the anchoring of " passive " formula, cause constructing the back loss of prestress greater than the given Suo Li error requirements of design, often must adopt " super stretch-draw " mode to guarantee that Suo Li reaches designing requirement; Each sheet difference of work clip sheet follows up simultaneously simultaneously, causes its unbalance stress.
Summary of the invention:
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of little whole roof pressure jack of back loss of prestress of constructing is provided.
The purpose of this utility model is achieved in that a kind of whole roof pressure jack, it is characterized in that it comprises: the roof pressure oil cylinder, built-in jack unit, the stretch-draw oil cylinder, the instrument anchor slab, instrument intermediate plate and top pressing board, the Boring mill of the cylinder body of described roof pressure oil cylinder and stretch-draw oil cylinder is to captiveing joint, built-in jack unit axial restraint is connected in the cylinder body of roof pressure oil cylinder and stretch-draw oil cylinder, the piston bush of roof pressure oil cylinder and stretch-draw oil cylinder places on the built-in jack unit, the instrument anchor slab is captiveed joint with the piston outer end of stretch-draw oil cylinder, the tool sheet axially is embedded in the instrument anchor slab, top pressing board places built-in jack unit front side, captives joint with the piston outer end of roof pressure oil cylinder.
Steel strand pass built-in jack unit, utilize instrument anchor slab and clamping of instrument intermediate plate and anchoring.During work, the piston of stretch-draw oil cylinder protracts, and after instrument anchor slab and instrument intermediate plate drive steel strand were stretched to legal load, the stretch-draw oil cylinder was held lotus; The piston of roof pressure oil cylinder protracts, and the top pressing board that the drives built-in jack unit front side intermediate plate that pushes the work forward enters in the taper hole of work anchor slab.After treating work clip sheet and the effective anchoring of work anchor slab, the piston of roof pressure oil cylinder drives top pressing board and retreats, and the stretch-draw oil cylinder retreats, and finishes single tension roof pressure process.
Characteristics of the present utility model are:
1, can be by changing the stretching construction that built-in jack unit and instrument anchor slab adapt to the steel strand of variety classes and specification;
2, stretch-draw oil cylinder and roof pressure oil cylinder are installed on the same jack, operation in order, and the one-machine-multi-functionization of realization steel strand tension and intermediate plate roof pressure makes easy construction effective fast.
The utility model adopts the anchoring of " initiatively " formula, i.e. roof pressure intermediate plate immediately behind the steel strand tension reduces the retraction value of steel strand, and construction back loss of prestress is little; Each sheet of intermediate plate is stressed evenly; Thereby realize that steel strand Suo Li error meets design requirement.
Description of drawings:
Fig. 1 is the whole roof pressure jack structure of a utility model scheme drawing.
The specific embodiment:
Referring to Fig. 1, Fig. 1 is a kind of whole roof pressure jack, mainly is made up of roof pressure oil cylinder 1, built-in jack unit 2, stretch-draw oil cylinder 3, instrument anchor slab 4, instrument intermediate plate 5 and top pressing board 6.The cylinder body 1.1 of described roof pressure oil cylinder 1 is connected with cylinder body 3.1 axial restraints of stretch-draw oil cylinder 3, built-in jack unit 2 axial restraints are connected in the cylinder body 1.1,3.1 of roof pressure oil cylinder 1 and stretch-draw oil cylinder 3, the piston 1.2,3.2 of roof pressure oil cylinder 1 and stretch-draw oil cylinder 3 is placed on the built-in jack unit 2, instrument anchor slab 4 is captiveed joint with piston 3.2 outer ends of stretch-draw oil cylinder 3, instrument intermediate plate 5 axially is embedded in the instrument anchor slab 4, top pressing board 6 places built-in jack unit 2 front sides, captives joint with piston 1.2 outer ends of roof pressure oil cylinder 1.
Claims (1)
1, a kind of whole roof pressure jack, it is characterized in that it comprises: roof pressure oil cylinder (1), built-in jack unit (2), stretch-draw oil cylinder (3), instrument anchor slab (4), instrument intermediate plate (5) and top pressing board (6), the cylinder body (1.1) of described roof pressure oil cylinder (1) is connected with cylinder body (3.1) axial restraint of stretch-draw oil cylinder (3), built-in jack unit (2) axial restraint is connected in the cylinder body (1.1) of roof pressure oil cylinder (1) and stretch-draw oil cylinder (3), (3.1) in, the piston (1.2) of roof pressure oil cylinder (1) and stretch-draw oil cylinder (3), (3.2) be placed on the built-in jack unit (2), instrument anchor slab (4) is captiveed joint with piston (3.2) outer end of stretch-draw oil cylinder (3), instrument intermediate plate (5) axially is embedded in the instrument anchor slab (4), top pressing board (6) places built-in jack unit (2) front side, captives joint with piston (1.2) outer end of roof pressure oil cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520075753 CN2825587Y (en) | 2005-09-23 | 2005-09-23 | Integrated top-pressing jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520075753 CN2825587Y (en) | 2005-09-23 | 2005-09-23 | Integrated top-pressing jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2825587Y true CN2825587Y (en) | 2006-10-11 |
Family
ID=37065773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520075753 Expired - Lifetime CN2825587Y (en) | 2005-09-23 | 2005-09-23 | Integrated top-pressing jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2825587Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967008A (en) * | 2014-04-04 | 2014-08-06 | 山东正元建设工程有限责任公司 | Clip type pre-stress anchor cable active clip feeding and tension locking device and use method |
| CN106285013A (en) * | 2016-10-18 | 2017-01-04 | 柳州黔桥工程材料有限公司 | Steel strand wires group's anchor monoblock type automatic synchronization control method |
| CN108468276A (en) * | 2018-02-01 | 2018-08-31 | 重庆恒佳工程技术咨询有限公司 | A kind of two-way jack-up system of prestressing force intelligent tensioning |
| CN113640126A (en) * | 2021-10-13 | 2021-11-12 | 中国矿业大学(北京) | Rock-soil prestressed anchor cable or anchor rod tensioning device |
-
2005
- 2005-09-23 CN CN 200520075753 patent/CN2825587Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967008A (en) * | 2014-04-04 | 2014-08-06 | 山东正元建设工程有限责任公司 | Clip type pre-stress anchor cable active clip feeding and tension locking device and use method |
| CN106285013A (en) * | 2016-10-18 | 2017-01-04 | 柳州黔桥工程材料有限公司 | Steel strand wires group's anchor monoblock type automatic synchronization control method |
| CN108468276A (en) * | 2018-02-01 | 2018-08-31 | 重庆恒佳工程技术咨询有限公司 | A kind of two-way jack-up system of prestressing force intelligent tensioning |
| CN113640126A (en) * | 2021-10-13 | 2021-11-12 | 中国矿业大学(北京) | Rock-soil prestressed anchor cable or anchor rod tensioning device |
| CN113640126B (en) * | 2021-10-13 | 2022-01-11 | 中国矿业大学(北京) | Rock-soil prestressed anchor cable or anchor rod tensioning device |
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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 |
Granted publication date: 20061011 |
|
| EXPY | Termination of patent right or utility model |