CN204038962U - A kind of automatic compensation type stretch-draw jack - Google Patents
A kind of automatic compensation type stretch-draw jack Download PDFInfo
- Publication number
- CN204038962U CN204038962U CN201420423710.0U CN201420423710U CN204038962U CN 204038962 U CN204038962 U CN 204038962U CN 201420423710 U CN201420423710 U CN 201420423710U CN 204038962 U CN204038962 U CN 204038962U
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- China
- Prior art keywords
- stretch
- draw jack
- fixed part
- sliding part
- draw
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Abstract
The utility model provides a kind of automatic compensation type stretch-draw jack, its head comprises sliding part and fixed part, fixed part is fixed on the fuselage of stretch-draw jack, sliding part is connected with fixed part by locating part, and sliding part can slide along the relative fixed part of locating part, is also provided with the elastic component of both obstructions move toward one another between sliding part and fixed part.Stretch-draw jack of the present utility model compensates the compressible distances between ground tackle and stationary face by relative movement between sliding part and fixed part, thus the problem that avoid the elastic deformation amount due to anchor cable to be not enough to compensate prestressd anchor cable that the compressible distances between ground tackle and stationary face causes is not up to standard.Meanwhile, also avoid as making the prestress of anchor cable up to standard and excessive stretch-draw anchor causes the problem of anchor rope breakage.
Description
Technical field
The utility model relates to a kind of tensioning equipment, particularly a kind of stretch-draw jack for the construction of mine cable bolting.
Background technology
Anchor cable tensioning machine tool is the necessaries of mine cable bolting construction, see accompanying drawing 1, equipment comprises Pneumatic hydraulic pumping plant 1, hydraulic tubing 2 and stretch-draw jack 3, and wherein, stretch-draw jack 3 is connected with the fuel inlet fitting of Pneumatic hydraulic pumping plant 1 and back leakage connection respectively by hydraulic tubing 2.
See accompanying drawing 2, existing stretch-draw jack comprises: jack head 30', inner casing 31', middle cylinder 32', outer shell 33', moveable anchor 34', tool clamping piece 35'.Tool clamping piece 35' is socketed in moveable anchor 34'.Moveable anchor 34' is arranged in middle cylinder 32'.Middle cylinder 32' and outer shell 33' is tightly connected, and can move axially relatively.Inner casing 31' can hold anchor cable (not shown), and it is fixedly connected with outer shell 33', and stretches into middle cylinder 32' through outer shell 33'.The part that inner casing 31' stretches into middle cylinder 32' is fixed by screw thread and moveable anchor 34'.The principle of work of this stretch-draw jack is: after starting hydraulic efficiency equipment, outer shell 33' phase centralizing cylinder 32' moves right, and inner casing 31' pulls moveable anchor 34' to move right thereupon, and moveable anchor 34' oppresses tool clamping piece 35' and clamps anchor cable; Afterwards along with outer shell 33' phase centralizing cylinder 32' continue move to right, anchor cable is by stretch-draw.There is elastic deformation when stretch-draw in anchor cable, and produces prestress.Prestress puts on stationary face by ground tackle, thus realizes support action to constructing structure.
But, to be different from the construction such as road, bridge adopt the anchor cable of more than 10 meters, the length of the anchor cable adopted in mining construction is shorter, and therefore, its corresponding elastic deformation amount is also less.After stretch-draw, there is between ground tackle and stationary face certain compression distance.Therefore, the elastic deformation amount after the anchorage cable stretching adopted in mining construction is not enough to still retain enough prestress after compensating the compression distance between ground tackle and stationary face.To cause the prestress of anchor cable cannot be up to standard like this.In order to solve this problem, during construction, excessive stretch-draw can be carried out to anchor cable.But will produce another problem like this, namely anchor cable stress is excessive and easily rupture.
Utility model content
The purpose of this utility model is: provide a kind of automatic compensation type stretch-draw jack.
The technical solution of the utility model is: a kind of automatic compensation type stretch-draw jack, its head comprises sliding part and fixed part, fixed part is fixed on the fuselage of stretch-draw jack, sliding part is connected with fixed part by locating part, and sliding part can slide along the relative fixed part of locating part, is also provided with the elastic component of both obstructions move toward one another between sliding part and fixed part.
In certain preferred embodiment, locating part is bolt of rear end plate, and elastic component is Compress Spring.
In certain preferred embodiment, stretch-draw jack comprises inner casing, middle cylinder and outer shell, and middle cylinder and outer shell are tightly connected and can move axially relatively, in logical inner casing be fixedly connected with outer shell, and pass outer shell and stretch into middle cylinder.
In certain preferred embodiment, fixed part is threaded connection and is fixed on middle cylinder.
The utility model also proposes a kind of anchorage cable stretching equipment applying above-mentioned automatic compensation type stretch-draw jack, and comprise Pneumatic hydraulic pumping plant and hydraulic tubing, stretch-draw jack is connected with Pneumatic hydraulic pumping plant by hydraulic tubing.
Usefulness of the present utility model is: compensate the compressible distances between ground tackle and stationary face by relative movement between sliding part and fixed part, thus the problem that avoid the elastic deformation amount due to anchor cable to be not enough to compensate prestressd anchor cable that the compressible distances between ground tackle and stationary face causes is not up to standard.Meanwhile, also avoid as making the prestress of anchor cable up to standard and excessive stretch-draw anchor causes the problem of anchor rope breakage.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of anchorage cable stretching equipment.
Fig. 2 is the structural representation of existing stretch-draw jack.
Fig. 3 A is the structural representation of stretch-draw jack of the present utility model.
Fig. 3 B is the partial enlarged drawing of the head of the stretch-draw jack of Fig. 3 A.
The implication of Reference numeral: 1-Pneumatic hydraulic pumping plant, 2-hydraulic tubing, 3-stretch-draw jack, 30,30'-jack head, 301-sliding part, 302-fixed part, 303-bolt of rear end plate, 304-Compress Spring, 31,31'-inner casing, 32, cylinder in 32'-, 33,33'-outer shell, 34,34'-moveable anchor, 35,35'-tool clamping piece.
Detailed description of the invention
Automatic compensation type tensioner of the present utility model is specifically described below in conjunction with accompanying drawing.
See accompanying drawing 3A, stretch-draw jack of the present utility model comprises: jack head 30, inner casing 31, middle cylinder 32, outer shell 33, moveable anchor 34, tool clamping piece 35.Tool clamping piece 35 is socketed in moveable anchor 34.Moveable anchor 34 is arranged in middle cylinder 32.Middle cylinder 32 is tightly connected with outer shell 33, and can move axially relatively.In logical inner casing 33 can hold anchor cable (not shown), it is fixedly connected with outer shell 33, and passes outer shell 33 and stretch into middle cylinder 32.The part that inner casing 33 stretches into middle cylinder 32 is fixed by screw thread and moveable anchor 34.See accompanying drawing 3B, jack head 30 comprises sliding part 301 and fixed part 302.Fixed part 302 is threaded connection and is fixed on middle cylinder 32.Bolt of rear end plate 303 is fixedly connected with the tapped bore (scheming not mark) on fixed part 302 through the perforate (figure does not mark) of sliding part 301.Sliding part 301 can along bolt of rear end plate 303 relatively fixed part 302 to horizontally slip a segment distance, and can not to depart from completely with fixed part 302.Fixed part 302 is offered groove (figure does not mark), wherein hold Compress Spring 304, and Compress Spring 304 hinders sliding part 301 and fixed part 302 move toward one another.That is, when sliding part 301 is near fixed part 302, there is compression set in Compress Spring 304.
In another embodiment, Compress Spring 304 is socketed on bolt of rear end plate 303.
Apply ground tackle tensioning equipment of the present utility model and also comprise Pneumatic hydraulic pumping plant and hydraulic tubing, stretch-draw jack is connected with Pneumatic hydraulic pumping plant by hydraulic tubing, thus accepts hydraulic action.
During work, jack head 30 withstands work anchor (not shown), and namely sliding part 301 is against work anchor.Outer shell 33 phase centralizing cylinder 32 under hydraulic action moves right, and inner casing 31 pulls moveable anchor 34 to move right thereupon.Moveable anchor 34 is oppressed tool clamping piece 35 and is clamped anchor cable.Under hydraulic action, outer shell 33 phase centralizing cylinder 32 continues to move right, thus makes anchor cable by stretch-draw.Anchor cable affects by pulling force, can produce certain elastic deformation amount.On the other hand, due to antagonistic force, sliding part 301 is forced to fixed part 302 and is moved, and Compress Spring 304 is compressed.Now, work anchor is close on stationary face, but owing to remaining some elastic deformation amounts between each several part, therefore, also there is one section of compressible distances between work anchor and stationary face.At the end of stretch-draw, equipment pressure release, the pulling force that stretch-draw jack is applied on anchor cable disappears.Anchor cable bounces back under the effect of its own resilient, and drives work anchor to bounce back.On the other hand, antagonistic force also disappears, and Compress Spring 304 resets under its own resilient effect, and promotes sliding part 301 and be moved to the left.Work anchor is moved to the left thereupon, and this miles of relative movement compensates the compressible distances between work anchor and stationary face, thus ensures that the prestress of anchor cable is up to standard.
In addition, the top body design that product of the present utility model is more ripe after using coal production actual verification, only need adjust a little, can realize using with the exchange of the anchorage cable stretching equipment of other models, thus the practicality of further raising equipment, greatly reduce the replacement cost of equipment, avoid the drawback causing crude apparatus to stop using for changing new installation or scrap, reduce production cost, the utilization of resource is maximized.
More than show and describe groundwork of the present utility model, principal character and advantage.Those of ordinary skill in the art should understand, and above-described embodiment does not limit protection domain of the present utility model in any form, and all employings are equal to the technical scheme that the modes such as replacement obtain, and all falls within protection domain of the present utility model.
Claims (5)
1. an automatic compensation type stretch-draw jack, it is characterized in that: the head of stretch-draw jack comprises sliding part and fixed part, fixed part is fixed on the fuselage of stretch-draw jack, sliding part is connected with fixed part by locating part, and sliding part can slide along the relative fixed part of locating part, is also provided with the elastic component of both obstructions move toward one another between sliding part and fixed part.
2. automatic compensation type stretch-draw jack as claimed in claim 1, it is characterized in that: described locating part is bolt of rear end plate, described elastic component is Compress Spring.
3. automatic compensation type stretch-draw jack as claimed in claim 1, it is characterized in that: described stretch-draw jack comprises inner casing, middle cylinder and outer shell, middle cylinder and outer shell are tightly connected and can move axially relatively, in logical inner casing be fixedly connected with outer shell, and pass outer shell and stretch into middle cylinder.
4. automatic compensation type stretch-draw jack as claimed in claim 3, is characterized in that: described fixed part is threaded connection and is fixed on described middle cylinder.
5. application rights requires an anchorage cable stretching equipment for automatic compensation type stretch-draw jack described in 1, and comprise Pneumatic hydraulic pumping plant and hydraulic tubing, described stretch-draw jack is connected with Pneumatic hydraulic pumping plant by hydraulic tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420423710.0U CN204038962U (en) | 2014-07-29 | 2014-07-29 | A kind of automatic compensation type stretch-draw jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420423710.0U CN204038962U (en) | 2014-07-29 | 2014-07-29 | A kind of automatic compensation type stretch-draw jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204038962U true CN204038962U (en) | 2014-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420423710.0U Expired - Fee Related CN204038962U (en) | 2014-07-29 | 2014-07-29 | A kind of automatic compensation type stretch-draw jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204038962U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999625A (en) * | 2018-07-30 | 2018-12-14 | 天地科技股份有限公司 | Anchor pole stretching construction device and construction method |
| CN110332000A (en) * | 2019-07-27 | 2019-10-15 | 山东焱鑫矿用材料加工有限公司 | A kind of dedicated prestress application device of intelligent overall length cementation anchor cable |
| CN112324154A (en) * | 2020-11-05 | 2021-02-05 | 重庆交通大学 | Prestressed tendon anchoring method capable of preventing retraction deformation loss and clamping piece assembly |
| CN114620636A (en) * | 2022-04-26 | 2022-06-14 | 杨军 | Tensioning jack |
-
2014
- 2014-07-29 CN CN201420423710.0U patent/CN204038962U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999625A (en) * | 2018-07-30 | 2018-12-14 | 天地科技股份有限公司 | Anchor pole stretching construction device and construction method |
| CN108999625B (en) * | 2018-07-30 | 2020-06-09 | 天地科技股份有限公司 | Anchor rod tensioning construction device and construction method |
| CN110332000A (en) * | 2019-07-27 | 2019-10-15 | 山东焱鑫矿用材料加工有限公司 | A kind of dedicated prestress application device of intelligent overall length cementation anchor cable |
| CN112324154A (en) * | 2020-11-05 | 2021-02-05 | 重庆交通大学 | Prestressed tendon anchoring method capable of preventing retraction deformation loss and clamping piece assembly |
| CN112324154B (en) * | 2020-11-05 | 2022-02-15 | 重庆交通大学 | Prestressed tendon anchoring method capable of preventing retraction deformation loss |
| CN114620636A (en) * | 2022-04-26 | 2022-06-14 | 杨军 | Tensioning jack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20180729 |