CN200985797Y - Anchor rod preloader - Google Patents
Anchor rod preloader Download PDFInfo
- Publication number
- CN200985797Y CN200985797Y CN 200620123020 CN200620123020U CN200985797Y CN 200985797 Y CN200985797 Y CN 200985797Y CN 200620123020 CN200620123020 CN 200620123020 CN 200620123020 U CN200620123020 U CN 200620123020U CN 200985797 Y CN200985797 Y CN 200985797Y
- Authority
- CN
- China
- Prior art keywords
- sleeve
- hydraulic cylinder
- anchor
- hydraulic
- preloader
- 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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Abstract
The utility model discloses an anchor rod preloader comprising a hydraulic pump, a hydraulic cylinder and a hydraulic pip. Wherein, the hydraulic pump and the hydraulic cylinder realize connection via the hydraulic pipe; the hollow hydraulic cylinder is internally provided with a sleeve fixed by a collar, and the bottom of the cylinder is provided with a supporting base fixed with the cylinder body. The sleeve has different types, and loading prestress for different types of anchor only requires changing for the corresponding sleeve. One end of the sleeve is provided with a nut sleeve for transferring the torque exerted by the wrench to the anchor nut, and the other end of the sleeve is drilled with a handle installing hole. The sleeve can freely rotate and slide little in the hydraulic cylinder. The prestress is even when the anchor rod preloader loads, and the utility model has the advantages of small occupation area, light weight and absence of other wrench, thereby being good for underground operation. Secondly, thanks to using the rotate sleeve with a handle to fasten the anchor nut, so space for the wrench is not in need. The utility model applies to supporting of the mine anchor rod and the prestress and discharge of the anchor bolt of the heavy machinery.
Description
Technical field
The utility model relates to a kind of anchor pole preloader.
Background technology
For improving the supporting effect of anchor pole, should when anchor pole is installed, apply certain prestressing force, and it be fixed with backing plate and nut to it.More high-prestressed applying also do not have special-purpose machines and tools to anchor pole at present, mainly relies on torque wrench or jumbolter to install.But jumbolter designs for boring bolthole, and its moment of torsion is less, and above equipment can not provide enough pretightning forces.
Summary of the invention
The purpose of this utility model is can provide a kind of anchor pole preloader of enough pretightning forces for overcoming above-mentioned weak point.It utilizes the hydraulic pre-tightening technology that anchor pole is carried out pretension, and it is even to have pretightning force, and it is little to take up room, in light weight, does not need to join in addition spanner, and flexible operation helps using in the construction.
A kind of anchor pole preloader comprises hydraulic pump, hydraulic cylinder and fluid pressure line, by fluid pressure line hydraulic pump and hydraulic cylinder is communicated with; It is characterized in that: be provided with sleeve in the hollow hydraulic cylinder and fix with collar, the bottom has bearing to fix with cylinder body.
Described sleeve has plurality of specifications and replaceable, to adapt to the anchor pole of pretension different size.
Described sleeve one end has and transmits spanner anchor nut is applied the nut sleeve of moment of torsion, and the other end is drilled with the handle installing hole.Sleeve can freely rotate in hydraulic cylinder and less slip.
Anchor pole preloader advantage of the present utility model is: increased mobilizable sleeve in the hollow type hydraulic cylinder.Pretension to anchor nut in actual the use can pass to anchor nut through sleeve with handle, so more is applicable in the small space of down-hole and uses.
Description of drawings
Fig. 1 is an anchor pole preloader schematic diagram;
Fig. 2 is the hydraulic cylinder schematic diagram;
The specific embodiment
Further specify the utility model below in conjunction with drawings and Examples.
The anchor pole preloader mainly is made up of hydraulic pump 1, pressure meter 4, hydraulic cylinder 9, two oil circuit designs.The hydraulic pump of present embodiment adopts manual pump, and hydraulic cylinder is connected by two high-pressure rubber pipes 5 with manual pump, and pressure meter is received on the thrust hydraulic cylinder output circuit, so that observe on-load pressure.Referring to Fig. 1.Hydraulic cylinder comprises that snap joint 12, cylinder cap 13, sliding sleeve 14, sleeve 15, top cover 16, handle 17, piston 18, cylinder body 19, collar 20 and bearing 21 etc. partly form.Referring to Fig. 2.Top cover is positioned at the piston upper end, is convenient to by loading nut anchor pole be applied pulling force.
Earlier backing plate 11 is overlapped anchor pole 8 during work and be placed on the pressure-bearing surface, tightened hold-down nut 10.Hydraulic cylinder is crossed anchor pole be placed on the backing plate, on hydraulic cylinder, place top cover and screw loading nut 7.High-pressure rubber hose coupling 6 is connected with hydraulic cylinder snap joint, and the handle wrench of reversal valve 3 to loading position, is added to press to and injects hydraulic oil in the oil cylinder by pressing manual pump pressure handle 2, promotes piston and stretches out, by top cover with load nut and anchor pole is stretched load.The tensile force value can show by pressure meter, stops to load when reaching the tensile force of design, drives hold-down nut simultaneously with the handle rotational sleeve and rotates, locking anchor pole, the tensile force that keeps anchor pole to be applied in.With the reversal valve handle wrench to unloading position, by hydraulic pump to the reverse oiling of oil cylinder, up to the piston return.The reversal valve handle is placed meta, unloads to load nut and top cover.Hydraulic cylinder is taken off this root bolt pretension loaded from anchor pole.
Claims (2)
1. an anchor pole preloader comprises hydraulic pump, hydraulic cylinder and fluid pressure line, by fluid pressure line hydraulic pump and hydraulic cylinder is communicated with; It is characterized in that: be provided with sleeve in the hollow hydraulic cylinder and fix with collar, the bottom has bearing to fix with cylinder body.
2. anchor pole preloader as claimed in claim 1 is characterized in that: sleeve one end has and transmits spanner anchor nut is applied the nut sleeve of moment of torsion, and the other end is drilled with the handle installing hole, and sleeve can freely rotate in hydraulic cylinder and less slip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123020 CN200985797Y (en) | 2006-07-28 | 2006-07-28 | Anchor rod preloader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123020 CN200985797Y (en) | 2006-07-28 | 2006-07-28 | Anchor rod preloader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200985797Y true CN200985797Y (en) | 2007-12-05 |
Family
ID=38915255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620123020 Expired - Fee Related CN200985797Y (en) | 2006-07-28 | 2006-07-28 | Anchor rod preloader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200985797Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244159A (en) * | 2013-05-13 | 2013-08-14 | 中国矿业大学 | Method and device for exerting anchor rod pretightening force |
| CN103628477A (en) * | 2013-11-11 | 2014-03-12 | 西南交通大学 | Prestress loading device used for fiberglass rib anchor rod |
| CN104018862A (en) * | 2014-06-26 | 2014-09-03 | 河北联合大学 | Highly pre-tightened anchor rod tensioning device |
| CN109612616A (en) * | 2018-12-30 | 2019-04-12 | 洛阳轴承研究所有限公司 | A kind of measurement of friction torque device of angular contact radial bearing |
| CN112033602A (en) * | 2020-09-24 | 2020-12-04 | 罗治军 | High-strength bolt ultrasonic axial force coefficient field calibration system |
-
2006
- 2006-07-28 CN CN 200620123020 patent/CN200985797Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244159A (en) * | 2013-05-13 | 2013-08-14 | 中国矿业大学 | Method and device for exerting anchor rod pretightening force |
| CN103628477A (en) * | 2013-11-11 | 2014-03-12 | 西南交通大学 | Prestress loading device used for fiberglass rib anchor rod |
| CN104018862A (en) * | 2014-06-26 | 2014-09-03 | 河北联合大学 | Highly pre-tightened anchor rod tensioning device |
| CN109612616A (en) * | 2018-12-30 | 2019-04-12 | 洛阳轴承研究所有限公司 | A kind of measurement of friction torque device of angular contact radial bearing |
| CN112033602A (en) * | 2020-09-24 | 2020-12-04 | 罗治军 | High-strength bolt ultrasonic axial force coefficient field calibration system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |