CN200999618Y - Hyperstatic support anchorage cable large-stroke stretching device - Google Patents
Hyperstatic support anchorage cable large-stroke stretching device Download PDFInfo
- Publication number
- CN200999618Y CN200999618Y CNU2007200340827U CN200720034082U CN200999618Y CN 200999618 Y CN200999618 Y CN 200999618Y CN U2007200340827 U CNU2007200340827 U CN U2007200340827U CN 200720034082 U CN200720034082 U CN 200720034082U CN 200999618 Y CN200999618 Y CN 200999618Y
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- oil
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- oil cylinder
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Abstract
The utility model provides a hyperstatic supporting anchor line long travel range pull device, which is composed of a piston oil cylinder, a left pull plate and a positioning plate positioned at two sides of the oil cylinder and a right pull plate arranged at end of the piston. The left and the right pull plates as well as the positioning plate are provided with a steel hinge line guiding and positioning U-shaped slot at the place corresponding to the same position; the U-shaped slot is opened with through holes at two sides for fixing the steel hinge ling; wherein, the through hole of the left pull plate is internally provided with a clamp check; the oil cylinder is provided with an oil sealing nut movably matching with the piston at the front end and an oil inlet as well as an oil outlet at the front end in radial; the positioning plate at rear end is provided with the oil inlet and the oil outlet communicated with the oil cylinder in radial. During operation, the utility model exerts prestress to the steel hinge ling through extending the piston to fulfill the reverse pull every two of the four steel hinge line. The device is characterized in long moving travel range, which can pull sufficiently for one time without being impacted by the curvature of the steel hinge line, therefore, the utility model is suitable for peeling the steel hinge line; besides, the device has the advantages of simple structure, convenient operation and utilization, stable performance, good pull effect and favorable maintenance as well as abroad application.
Description
Technical field
The utility model relates to large-stroke stretching device for static-indeterminant supporting anchorage cable, is particularly useful in the surrounding rock supporting of mine steel strand being applied the stretch-draw of prestressing force requirement.
Background technology
Along with the increasing of the coal mining degree of depth, geostatic stress is also increasing, and the supporting problem of deep high stress tunnel becomes one of key technology of resource exploitation.Many employings of present stage anchor beam rete cord combined supporting modes, its stream line is the key point that adds strong supporting.Anchorage cable stretching jack commonly used at present is a hollow piston all, and the anchor cable with 7 strands of steel strand during use passes jack piston, carries out stretch-draw again, applies pretightning force.This stretch-draw jack piston internal diameter is generally 15mm～19mm, can only carry out whole unidirectional stretch-draw to anchor cable; Simultaneously, because the strong point and fixed point lay respectively at the two ends of device, cause that the relative assembly volume is big, price is high, and effective consumption is more, can't satisfy the requirement of static-indeterminant supporting minor diameter, double-way opposed-pulling.
The utility model content
The purpose of this utility model is to overcome weak point in the prior art, and a kind of compact conformation is provided, and is easy to use, and the energy double-way opposed-pulling satisfies static-indeterminant supporting the minor diameter strand is applied prestressed large-stroke stretching device for static-indeterminant supporting anchorage cable.
Automatic tensioner of the present utility model, it is made of a piston oil-cylinder, the left stretch-draw plate that is located at the oil cylinder both sides and location-plate and the right stretch-draw plate that is located at pistons end, corresponding same position is provided with steel hinge line guide-localization U-lag on left side stretch-draw plate, right stretch-draw plate and the location-plate, the U-lag both sides have the fixedly through hole of steel hinge line, are provided with binding clasp in the through hole of left stretch-draw plate; The front end of oil cylinder is provided with and piston oil sealing nut movingly, and the oil cylinder leading section radially is provided with oil inlet and outlet, and the location-plate of rearward end radially is provided with the oil inlet and outlet that communicates with oil cylinder.
Described cylinder block is provided with oil circuit that communicates with the cylinder body ante-chamber and the oil circuit that communicates with back cavity; Described binding clasp is made of last fixture block, following fixture block and oil sealing plate, and two fixture block relative positions have the groove that adapts to wire rope, and following fixture block is provided with the turnover oil pocket, and the turnover oil pocket of following fixture block communicates with the oil circuit on the cylinder block.
Large-stroke stretching device for static-indeterminant supporting anchorage cable of the present utility model is best suited for the static-indeterminant supporting technology applies the prestressing force requirement to steel strand stretch-draw.Relative two blocks of stretch-draw plates about employing, by the flexible of piston oil-cylinder steel is applied prestressing force than line, realize four steel strand reversal stretch-draw, stretch-draw plate in a left side is provided with the steel strand binding clasp that communicates with the oil circuit of cylinder block, binding clasp is made of last fixture block, following fixture block and oil sealing plate, carries out automatically synchronously with degree of tightness and the anchorage cable stretching of finishing steel hinge line.This facility movement travel is bigger, but single tension put in place, and be not subjected to the influence of steel strand amount of curvature, be suitable for the steel strand that loose of stripping arbitrarily, significant to the development of the popularization of static-indeterminant supporting technology and deep high stress tunnel support technology.It is simple in structure, and is cheap, easy for operation, and stable performance is effective, is convenient to safeguard to have practicality widely.
Description of drawings
Fig. 1 is a structure chart of the present utility model.
Fig. 2 is a location-plate structure chart of the present utility model.
Fig. 3 is the left stretch-draw of the present utility model composition that hardens.
Fig. 4 is the right stretch-draw of the present utility model composition that hardens.
Among the figure: the 1-location-plate; The 2-oil cylinder; The 3-oil pipe; The 4-sealing ring; The 5-sealing ring; The 6-oil pipe; 7-left side stretch-draw plate; The 8-sealing plate; 9-oil sealing nut; The 10-piston; The right stretch-draw plate of 11-; The 12-nut; 13,14-oil inlet and outlet; The 15-train wheel bridge; The 16-lower plate; 17-oil sealing plate.
The specific embodiment
Below in conjunction with accompanying drawing an embodiment of the present utility model is described further:
Shown in Figure 1, large-stroke stretching device for static-indeterminant supporting anchorage cable, mainly be made of piston oil-cylinder 2 and the right stretch-draw plate 11 that is located at the steel strand location-plate 1 and the left stretch-draw plate 7 of oil cylinder 2 both sides and is located at the piston rod end, location-plate 1 is located at oil cylinder 2 bottoms, radially has the oil inlet and outlet 14 that communicates with oil cylinder; Left side stretch-draw plate 7 is connected oil cylinder 2 tops, and right stretch-draw plate 11 is connected piston 10 ends of move left and right, and is fixing by nut 12.Be equipped with the U-lag of placing steel strand on left side stretch-draw plate 7, right stretch-draw plate 11 and the location-plate 1, and on same straight line, the U-lag both sides have the fixedly through hole of steel hinge line, be provided with the steel strand binding clasp that communicates with the oil circuit of cylinder block in the inner via hole of left side stretch-draw plate 7, binding clasp is made of last fixture block 15, following fixture block 16 and oil sealing plate 17, and both sides are provided with 8, two fixture block relative positions of sealing plate and have the groove that adapts to wire rope, following fixture block 16 is provided with the turnover oil pocket, and is shown in Figure 3.Oil cylinder 2 cylinder bodies are provided with oil circuit 6 that communicates with the cylinder body ante-chamber and the oil circuit 3 that communicates with back cavity, and the turnover oil pocket of following fixture block 16 communicates with oil circuit 3,6 on oil cylinder 2 cylinder bodies.The front end of oil cylinder 2 is provided with and piston 10 oil sealing nut 9 movingly, and oil sealing nut 9 is provided with sealing ring 5.Oil cylinder 2 leading sections radially are provided with oil inlet and outlet 13, the location-plate 1 of rearward end radially is provided with the oil inlet and outlet 14 that communicates with oil cylinder 2, by side direction pouring orifice 13 and pouring orifice 14 oiling oil return in oil cylinder respectively, promote piston 10 and stretch, piston 10 is provided with sealing ring 4.
During work, two steel strand are put into U-lag respectively, other two steel strand are passed circular hole on the right stretch-draw plate 11, then, penetrate in the automatic retraction device screens on the left stretch-draw plate 7, be fixed.By side direction pouring orifice 13 and pouring orifice 14 oiling oil return in oil cylinder respectively, promoting oil cylinder piston bar 10 stretches, the right stretch-draw plate 11 that is located on the piston rod 10 is flexible thereupon, applies prestressing force to steel hinge line, makes four steel strand be reversed relative stretch-draw in the outside of piston oil-cylinder 2; Simultaneously, lower plate 16 is flexible thereupon, finishes the automatic degree of tightness of steel hinge line.
Claims (3)
1, large-stroke stretching device for static-indeterminant supporting anchorage cable, it is characterized in that: it is made of a piston oil-cylinder (2), the left stretch-draw plate (7) that is located at oil cylinder (2) both sides and location-plate (1) and the right stretch-draw plate (11) that is located at piston (10) end, left side stretch-draw plate (7), right stretch-draw plate (11) and location-plate (1) are gone up corresponding same position and are provided with steel hinge line guide-localization U-lag, the U-lag both sides have the fixedly through hole of steel hinge line, are provided with binding clasp in the through hole of left stretch-draw plate (7); The front end of oil cylinder (2) is provided with and piston (10) oil sealing nut (9) movingly, and oil cylinder (2) leading section radially is provided with oil inlet and outlet (13), and the location-plate of rearward end (1) radially is provided with the oil inlet and outlet (14) that communicates with oil cylinder (2).
2, according to right 1 described large-stroke stretching device for static-indeterminant supporting anchorage cable, it is characterized in that: described oil cylinder (2) cylinder body is provided with oil circuit (6) that communicates with the cylinder body ante-chamber and the oil circuit (3) that communicates with back cavity.
3, according to right 1 or 2 described large-stroke stretching device for static-indeterminant supporting anchorage cable, it is characterized in that: described binding clasp is by last fixture block (15) and following fixture block (16) and oil sealing plate (17) formation, two fixture block relative positions have the groove that adapts to wire rope, following fixture block (16) is provided with the turnover oil pocket, and the turnover oil pocket of following fixture block (16) communicates with oil circuit (3,6) on oil cylinder (2) cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200340827U CN200999618Y (en) | 2007-01-24 | 2007-01-24 | Hyperstatic support anchorage cable large-stroke stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200340827U CN200999618Y (en) | 2007-01-24 | 2007-01-24 | Hyperstatic support anchorage cable large-stroke stretching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200999618Y true CN200999618Y (en) | 2008-01-02 |
Family
ID=39014025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200340827U Expired - Lifetime CN200999618Y (en) | 2007-01-24 | 2007-01-24 | Hyperstatic support anchorage cable large-stroke stretching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200999618Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100595419C (en) * | 2007-09-28 | 2010-03-24 | 中国矿业大学 | Large-stroke stretching device for static-indeterminant supporting anchorage cable |
-
2007
- 2007-01-24 CN CNU2007200340827U patent/CN200999618Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100595419C (en) * | 2007-09-28 | 2010-03-24 | 中国矿业大学 | Large-stroke stretching device for static-indeterminant supporting anchorage cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080102 Effective date of abandoning: 20070124 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20080102 Effective date of abandoning: 20070124 |