CN204981007U - Stressing jack for screw -thread steel - Google Patents
Stressing jack for screw -thread steel Download PDFInfo
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- CN204981007U CN204981007U CN201520756579.4U CN201520756579U CN204981007U CN 204981007 U CN204981007 U CN 204981007U CN 201520756579 U CN201520756579 U CN 201520756579U CN 204981007 U CN204981007 U CN 204981007U
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- nut
- screw
- ratchet
- thread steel
- sleeve
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Abstract
The utility model relates to a stressing jack for screw -thread steel, current screw -thread steel stretch -draw has been solved and that the workman is direct pulls the nut with the hand and accomplish and screw, the work of screwing is troublesome, dangerous higher defect, the jack front end is connected with the support component, the support component is including supporting the cover and setting up in supporting the inside nut of the cover part of screwing, the nut screw the part include with nut complex nut cover and drive nut cover pivoted ratchet, ratchet connects the drive handle, the drive handle stretches out outside the support component. The support component is used for jack and anchor slab phase separation and reserves the position that the fitting up was screwed to enough nuts, the nut screw the nut cover of parts be used for with the screw -thread steel on the nut match, ratchet can rotate by the drive nut cover, the nut cover rotates screw the nut, ratchet connects the drive handle, outside the drive handle stretched out the support component, the workman can externally handle, need not stretch into the hand and directly pull the nut, guarantees to operate safety.
Description
Technical field
The utility model relates to a kind of jack structure, especially a kind of screw-thread steel stretch-draw jack.
Background technology
Screw-thread steel in use all needs to carry out stretch-draw, carries out pouring concrete again after stretch-draw.Screw-thread steel need nut with the use of, when stretch-draw be exactly change nut relative anchor slab screw length.
All generally realize screw-thread steel by jack to stretch when screw-thread steel stretch-draw, in stretching process, along with screw-thread steel extends, the axial force that screw-thread steel produces is that geometry increases, therefore jack can not put in place in disposable stretching, be successively complete, screwing of nut is also come step by step, and that is jack stretches one section, nut once, then jack stretches again, and nut also screws again, until screw-thread steel stretch-draw completes.
In prior art, nut is all by having pulled with hand, and jack to draw high after screw-thread steel directly hand Screw nut each time.But to draw high the length space of screw-thread steel all smaller for jack each time, and manually complete nut in so little gap cumbersome, operational danger is higher.And directly to move nut with palm cumbersome in so little gap, the bad control of the power that screws.
Utility model content
It is that workman directly pulls nut to screw with hand that the utility model solves existing screw-thread steel stretch-draw, screw work trouble, dangerous higher defect, a kind of screw-thread steel stretch-draw jack is provided, screw-thread steel is by after axial tension, and the nut mechanism handling jack end locks nut, hand directly need not be extend into and stretch in the gap of generation, screwing operations is convenient, and safety is high.
The utility model also solves existing screw-thread steel stretch-draw and directly pulls nut with hand and complete locking, screw power uncontrollable, rely on workman's experience, after release jack, the defect that screw-thread steel stretch-draw can bounce back, provides a kind of screw-thread steel stretch-draw jack, and the nut mechanism handling jack outside screws nut, screw power controlled, can not bounce back after screw-thread steel stretch-draw.
The utility model solves the technical scheme that its technical matters adopts: a kind of screw-thread steel stretch-draw jack, jack front end is connected with support component, support component is axially penetrating and be communicated with jack, support component comprises support sleeve and is arranged at the nut parts of support sleeve inside, nut parts comprise and overlap with the nut sleeve of nut screw connection and drive nut the ratchet device rotated, ratchet device connects driving handle, and driving handle reaches outside support sleeve; Support sleeve is provided with servo-actuated ratchet, and servo-actuated ratchet coordinates with ratchet device and realizes nut sleeve and turn round.Support component is connected with jack, for jack and anchor slab being separated and reserving the position that enough nut parts install, the nut sleeve of nut parts is used for matching with the nut on screw-thread steel, ratchet device can rotate by drive nut cover, and nut sleeve rotates tightening nut, and ratchet device connects driving handle, driving handle reaches outside support component, hand at external control, can need not stretch into and directly pull nut, guarantee safety of operation by workman; Nut operation is carried out in outside, screws power controlled, and what nut reached setting screws power, can not bounce back after screw-thread steel stretch-draw.
As preferably, ratchet device comprises the ratchet cover plate and ratchet, and the ratchet cover plate to be nested with in nut sleeve and to fix with nut, and the ratchet of ratchet and ratchet cover plate periphery matches to merge to be driven by driving handle and rotates.
As preferably, support sleeve cylindrically, the wall of support sleeve is provided with notch, and be placed with the pawl base of arc shape in notch, ratchet is articulated with in pawl base.
As preferably, the outer cover of support sleeve is equipped with rotation guard shield, rotates guard shield inwall and fixes with pawl base, and driving handle fixes with rotation guard shield.
As preferably, nut sleeve has attachment flange limit and nut screw connection shell of column, and nut screw connection shell of column has the hexagonal inner hole matched with nut.
As preferably, support sleeve inside is two hierarchic structures, and first ladder is the installation ladder of ratchet device, and second ladder is the fixed step of ratchet device, and fixed step place is provided with cover plate, and cover plate covers ratchet device.
As preferably, cover plate has radial limiting section, and radial limiting section matches with the outer wall of nut sleeve and carries out spacing to nut sleeve outer wall.
As preferably, on the outer wall of support sleeve, the position of corresponding second ladder is provided with connecting bore, and holding screw penetrates into connecting bore internal fixtion cover plate.
As preferably, servo-actuated ratchet by bearing pin with support jacket wall and be hinged, bearing pin is equipped with retracing spring.
The beneficial effects of the utility model are: support component is connected with jack, for jack and anchor slab being separated and reserving the position that enough nut parts install, the nut sleeve of nut parts is used for matching with the nut on screw-thread steel, ratchet device can rotate by drive nut cover, nut sleeve rotates tightening nut, ratchet device connects driving handle, driving handle reaches outside support component, workman can at external control, hand need not be stretched into and directly pull nut, guarantee safety of operation.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the utility model;
Fig. 2 is the schematic perspective view of a kind of support component of the utility model;
Fig. 3 is the cutaway view of a kind of support component of the utility model;
Fig. 4 is the schematic perspective view of a kind of support sleeve of the utility model;
Fig. 5 is the cutaway view of a kind of support sleeve of the utility model;
Fig. 6 is the schematic perspective view of a kind of pawl base of the utility model;
Fig. 7 is the schematic perspective view of a kind of nut sleeve of the utility model;
In figure: 1, jack, 2, support component, 3, base, 4, driving handle, 5, nut sleeve, 6, radial limiting section, 7, support sleeve, 8, cover plate, 9, the ratchet cover plate, 10, pawl base, 11, rotate guard shield, 12, connecting bore, 13, notch, 14, second ladder, 15, first ladder, 16, pin-and-hole, 17, pawl slot, 18, attachment flange limit, 19, nut screw connection shell of column, 20, endoporus, 21, servo-actuated ratchet.
Detailed description of the invention
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of screw-thread steel stretch-draw jack (see Fig. 1 Fig. 2), comprise hydraulic jack 1, hydraulic jack top ends is fixedly connected with support component 2, and the end winding support of support component has base 3.Base, support component are axially penetrating and be communicated with jack.
Support component (see Fig. 3) comprises support sleeve 7 and is arranged at the nut parts of support sleeve inside, and support sleeve outer cover is equipped with rotates guard shield 11, and the outer wall of rotation guard shield is fixed with driving handle 4.Nut parts comprise the ratchet device of nut sleeve 5 and the rotation of drive nut cover, ratchet device comprises the ratchet of the ratchet cover plate 9 and the rotation of driving pawl dish, the ratchet cover plate to be placed in nut sleeve and to fix with nut sleeve, and the periphery of the ratchet cover plate is provided with ratchet, and ratchet matches with ratchet.
Nut sleeve (see Fig. 7) has attachment flange limit 18 and nut screw connection shell of column 19, and nut screw connection shell of column has the hexagonal inner hole 20 matched with nut.Nut sleeve penetrates in support sleeve, and one end, attachment flange limit is towards jack, and nut screw connection shell of column is towards base.Ratchet sleeve to be placed on nut screw connection shell of column and to fix with attachment flange limit.
Support sleeve is (see Fig. 4 Fig. 5) cylindrically, support sleeve inside is two hierarchic structures, first ladder 15 is the installation ladder of ratchet device, second ladder 14 is the fixed step of ratchet device, the ratchet cover plate is installed on first ladder place, second flight place is provided with cover plate 8, and cover plate covers the ratchet cover plate.Cover plate has radial limiting section 6, and radial limiting section matches with the outer wall of nut sleeve and carries out spacing to nut sleeve outer wall.The direction circumferentially, position supporting corresponding first ladder on jacket wall offers notch 13, and be provided with the pawl base 10 of arc in notch, the arc length of pawl base is less than the arc length of notch.Pawl base fixes with the inwall rotating guard shield, time driving handle drives and rotates guard shield rotation, rotates guard shield and drives pawl base to move in notch, and the distance of movement controls by the arc of notch is long.The position supporting corresponding second ladder on jacket wall is provided with radial connecting bore 12, and holding screw penetrates into connecting bore internal fixtion cover plate.
Pawl base inside is provided with pawl slot 17(see Fig. 6), pawl base is also provided with and penetrates whole pawl base and the pin-and-hole 16 perpendicular with pawl slot, the relatively whole pawl base of pin-and-hole is biased.Ratchet to be inserted in pawl slot and by hinge to pin-and-hole place, bearing pin to be equipped with pawl restoring spring.
On support jacket wall and the position at 180 °, notch interval is provided with secondary window, servo-actuated ratchet 21 is had by hinge in secondary window, bearing pin is equipped with retracing spring, the force direction of servo-actuated ratchet is identical with the force direction of the ratchet of ratchet device, and servo-actuated ratchet matches with the ratchet cover plate of ratchet device and prevents the ratchet cover plate from turning round.
During use, screw-thread steel end penetrates from base end and passes from the top of stretch-draw jack, pass position and be rotary with captive nut, captive nut matches with the pistons end of jack, base supports on screw-thread steel anchor slab, the screw-thread steel being in jack inside is rotary with nut, and nut matches with the endoporus of nut sleeve.The piston of jack stretches out stretching screw-thread steel, nut and anchor slab are separated, then at outside rotating drive handle, driving handle drives and rotates guard shield rotation, rotating guard shield drives pawl base to move in notch inner circumferential, ratchet promotes ratchet cover plate rotation simultaneously, and the ratchet cover plate drives nut sleeve to rotate, nut sleeve tightening nut.Consider the control of the power of screwing, driving handle connects toggle.Can be stretched the while of tightening nut screw-thread steel on one side, or stop after stretching screw-thread steel stretching and tightening nut, and again stretch screw-thread steel after nut, until screw-thread steel stretch-draw completes.
Above-described embodiment is a kind of preferred version of the present utility model, not does any pro forma restriction to the utility model, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.
Claims (9)
1. a screw-thread steel stretch-draw jack, it is characterized in that jack front end is connected with support component, support component is axially penetrating and be communicated with jack, support component comprises support sleeve and is arranged at the nut parts of support sleeve inside, nut parts comprise and overlap with the nut sleeve of nut screw connection and drive nut the ratchet device rotated, ratchet device connects driving handle, and driving handle reaches outside support sleeve; Support sleeve is provided with servo-actuated ratchet, and servo-actuated ratchet coordinates with ratchet device and realizes nut sleeve and turn round.
2. a kind of screw-thread steel stretch-draw jack according to claim 1, it is characterized in that ratchet device comprises the ratchet cover plate and ratchet, the ratchet cover plate to be nested with in nut sleeve and to fix with nut, and the ratchet of ratchet and ratchet cover plate periphery matches to merge to be driven by driving handle and rotates.
3. a kind of screw-thread steel stretch-draw jack according to claim 2, it is characterized in that support sleeve cylindrically, the wall of support sleeve is provided with notch, be placed with the pawl base of arc shape in notch, ratchet is articulated with in pawl base.
4. a kind of screw-thread steel stretch-draw jack according to claim 3, is characterized in that the outer cover of support sleeve is equipped with rotation guard shield, and rotation guard shield inwall and pawl base fix, and driving handle fixes with rotation guard shield.
5. a kind of screw-thread steel stretch-draw jack according to claim 1 or 2 or 3 or 4, it is characterized in that nut sleeve has attachment flange limit and nut screw connection shell of column, nut screw connection shell of column has the hexagonal inner hole matched with nut.
6. a kind of screw-thread steel stretch-draw jack according to claim 1 or 2 or 3 or 4, it is characterized in that support sleeve inside is two hierarchic structures, first ladder is the installation ladder of ratchet device, second ladder is the fixed step of ratchet device, fixed step place is provided with cover plate, and cover plate covers ratchet device.
7. a kind of screw-thread steel stretch-draw jack according to claim 6, is characterized in that cover plate has radial limiting section, and radial limiting section matches with the outer wall of nut sleeve and carries out spacing to nut sleeve outer wall.
8. a kind of screw-thread steel stretch-draw jack according to claim 6, on the outer wall that it is characterized in that support sleeve, the position of corresponding second ladder is provided with connecting bore, and holding screw penetrates into connecting bore internal fixtion cover plate.
9. a kind of screw-thread steel stretch-draw jack according to claim 1 or 2 or 3 or 4, is characterized in that servo-actuated ratchet is hinged by bearing pin and support jacket wall, bearing pin is equipped with retracing spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520756579.4U CN204981007U (en) | 2015-09-28 | 2015-09-28 | Stressing jack for screw -thread steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520756579.4U CN204981007U (en) | 2015-09-28 | 2015-09-28 | Stressing jack for screw -thread steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204981007U true CN204981007U (en) | 2016-01-20 |
Family
ID=55115395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520756579.4U Active CN204981007U (en) | 2015-09-28 | 2015-09-28 | Stressing jack for screw -thread steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204981007U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217509A (en) * | 2015-09-28 | 2016-01-06 | 杭州浙锚预应力有限公司 | Screw-thread steel stretch-draw jack |
| CN114439002A (en) * | 2022-01-14 | 2022-05-06 | 杭州图强工程材料有限公司 | Tensioning tool for prestressed components |
| CN114482038A (en) * | 2022-01-14 | 2022-05-13 | 杭州图强工程材料有限公司 | Prestressed component tensioning tool with compact structure |
-
2015
- 2015-09-28 CN CN201520756579.4U patent/CN204981007U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217509A (en) * | 2015-09-28 | 2016-01-06 | 杭州浙锚预应力有限公司 | Screw-thread steel stretch-draw jack |
| CN105217509B (en) * | 2015-09-28 | 2018-11-02 | 浙锚科技股份有限公司 | Screw-thread steel stretch-draw jack |
| CN114439002A (en) * | 2022-01-14 | 2022-05-06 | 杭州图强工程材料有限公司 | Tensioning tool for prestressed components |
| CN114482038A (en) * | 2022-01-14 | 2022-05-13 | 杭州图强工程材料有限公司 | Prestressed component tensioning tool with compact structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 311400 Fuyang high tech Industrial Zone, Zhejiang, Hangzhou Patentee after: Zhejiang anchor Polytron Technologies Inc Address before: Silver Lake Street Golf Road Fuyang city Hangzhou city Zhejiang province 311402 No. 128 Patentee before: Zhejiang Zhemao Pre-Stressing Force Co., Ltd. |
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| CP03 | Change of name, title or address |