CN204475191U - A kind of Continuous Drive device of low retraction ground tackle holding nut - Google Patents
A kind of Continuous Drive device of low retraction ground tackle holding nut Download PDFInfo
- Publication number
- CN204475191U CN204475191U CN201520093903.9U CN201520093903U CN204475191U CN 204475191 U CN204475191 U CN 204475191U CN 201520093903 U CN201520093903 U CN 201520093903U CN 204475191 U CN204475191 U CN 204475191U
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- ground tackle
- drive sleeve
- ratchet
- nut
- holding nut
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Abstract
The utility model discloses a kind of Continuous Drive device of low retraction ground tackle holding nut, comprise retraction support, driving ring, drive sleeve, attaching nut and ground tackle; Described ground tackle comprises anchor ring and holding nut, and described anchor ring is connected by screw thread with one end of described attaching nut; Described holding nut is provided with pincers cave, one end of described drive sleeve is provided with chela, and described drive sleeve is enclosed within described attaching nut and goes up and matched with the pincers cave on described holding nut by described chela; Described drive sleeve is also provided with ratchet holes, in described ratchet holes, is provided with spring and ratchet; Described driving ring arranged outside has handle, and inner side is provided with the ratchet slot circumferentially distributed, and described driving ring to be enclosed within described drive sleeve and to be matched with described ratchet by ratchet slot; Described retraction support casing is on described driving ring, drive sleeve and ground tackle.Simple and rapid rotary support nut after the utility model can make ground tackle tensioning equipment complete ground tackle stretch-draw, improves operating efficiency.
Description
Technical field
The utility model relates to the technical field of anchoring, particularly the technical field of low retraction ground tackle tensioning equipment.
Background technology
Along with the progress of bridge technology, the application of large-span concrete makes pontic span increasing, this wherein has benefited from the raising of concrete strength, namely by wearing prestressed strand in concrete, pressure is applied to concrete, counteract concrete part tension working load, make concrete intensity improve several times.But occurred in the Prestressed Concrete Bridges of building in early days a lot of beam body cracking, under the bad phenomenon such as to disturb, one of its Causing Factors is that loss of prestress is comparatively large, and this brings danger to the safety operating of bridge.
Prestressed strand is the crucial primary structure member in prestressed bridge girder construction, and loss of prestress has a strong impact on the use safety of bridge, so the prestressed maintenance of steel bundle is very important, so the value of low retraction ground tackle is embodied; When adopting low retraction ground tackle to carry out prestressed stretch-draw, need to use special ground tackle tensioning equipment, first stretch-draw is carried out to the ground tackle of clamping steel bundle, then rotate the holding nut of low retraction ground tackle come towards the direction that stretch-draw is contrary the displacement of supplementary stretch-draw, the anchor ring on ground tackle can not be bounced back again.In the tensioning equipment used at present, the rotation of holding nut is rotated often by intermittent mode of operation, reduce operating efficiency.
Summary of the invention
The purpose of this utility model solves the problems of the prior art exactly, and propose a kind of Continuous Drive device of low retraction ground tackle holding nut, simple and rapid rotary support nut after ground tackle tensioning equipment can be made to complete ground tackle stretch-draw, improves operating efficiency.
For achieving the above object, the utility model proposes a kind of Continuous Drive device of low retraction ground tackle holding nut, comprise retraction support, driving ring, drive sleeve, attaching nut and ground tackle; Described ground tackle comprises anchor ring and holding nut, and described anchor ring is connected by screw thread with one end of described attaching nut; Described holding nut is provided with pincers cave, one end of described drive sleeve is provided with chela, and described drive sleeve is enclosed within described attaching nut and goes up and matched with the pincers cave on described holding nut by described chela; Described drive sleeve is also provided with ratchet holes, in described ratchet holes, is provided with spring and ratchet; Described driving ring arranged outside has handle, and inner side is provided with the ratchet slot circumferentially distributed, and described driving ring to be enclosed within described drive sleeve and to be matched with described ratchet by ratchet slot; Described retraction support casing is on described driving ring, drive sleeve and ground tackle.
As preferably, the ratchet holes in described drive sleeve is set to one or more, and circumferentially distributes.
As preferably, the quantity in described chela and described pincers cave is equal.
The beneficial effects of the utility model: the utility model by arranging ratchet in the drive sleeve of low retraction ground tackle tensioning equipment, and by a driving ring with ratchet slot and click-fit, the knob action of drive sleeve to holding nut is made to become the process of the continuous swing of handle, adjustment process is very simple, improves operating efficiency.
Feature of the present utility model and advantage will be described in detail by reference to the accompanying drawings by embodiment.
[accompanying drawing explanation]
Fig. 1 is the explosive view of the Continuous Drive device of a kind of low retraction ground tackle holding nut of the utility model;
Fig. 2 is the enlarged drawing in A portion in Fig. 1;
Fig. 3 is the structural representation of driving ring in the utility model;
Fig. 4 is the structural representation of drive sleeve in the utility model;
Fig. 5 is the structural representation of ground tackle in the utility model.
In figure: 1-retraction support, 2-driving ring, 3-drive sleeve, 4-attaching nut, 5-ground tackle, 6-ratchet, 7-spring, 21-handle, 22-ratchet slot, 31-ratchet holes, 32-chela, 51-anchor ring, 52-holding nut, 53-clamp cave.
[detailed description of the invention]
Consult Fig. 1 ~ Fig. 5, the utility model, comprise retraction support 1, driving ring 2, drive sleeve 3, attaching nut 4 and ground tackle 5; Described ground tackle 5 comprises anchor ring 51 and holding nut 52, and described anchor ring 51 is connected by screw thread with one end of described attaching nut 4; Described holding nut 52 is provided with pincers cave 53, one end of described drive sleeve 3 is provided with chela 32, and described drive sleeve 3 to be enclosed within described attaching nut 4 and to be matched with the pincers cave 53 on described holding nut 52 by described chela 32; Described drive sleeve 3 is also provided with ratchet holes 31, in described ratchet holes 31, is provided with spring 7 and ratchet 6; Described driving ring 2 arranged outside has handle 21, and inner side is provided with the ratchet slot 22 circumferentially distributed, and described driving ring 2 to be enclosed within described drive sleeve 3 and to be matched with described ratchet 6 by ratchet slot 22; Described retraction support 1 is enclosed within described driving ring 2, drive sleeve 3 and ground tackle 5.Ratchet holes 31 in described drive sleeve 3 is set to one or more, and circumferentially distributes.The quantity in described chela 32 and described pincers cave 53 is equal.
Utility model works process:
The Continuous Drive device of a kind of low retraction ground tackle holding nut of the utility model, after the tensioning equipment stretch-draw be connected on attaching nut 4 when ground tackle 5 completes, now bounce back support 1 under the prestressed effect of steel bundle, be fixedly clamped by jack and wall, the displacement that ground tackle 5 tension is advanced will be leaned on holding nut 52 to rotate and move axially to make up, the rotation of holding nut 52 needs to coordinate with the pincers cave 53 on holding nut 5 by the chela 32 in drive sleeve 3 to realize, the rotation of drive sleeve 3 is coordinated with the ratchet 6 in ratchet holes 31 by the ratchet slot 22 on driving ring 2, and pull handle 21 to realize, wherein spring 7 provides reset force for ratchet 6, reciprocally pull handle 21 just can realize the continuous rotation of holding nut 52.
The utility model, by arranging ratchet in the drive sleeve of low retraction ground tackle tensioning equipment, and by a driving ring with ratchet slot and click-fit, the knob action of drive sleeve to holding nut is made to become the process of the continuous swing of handle, adjustment process is very simple, improves operating efficiency.
Above-described embodiment is to explanation of the present utility model, is not to restriction of the present utility model, anyly all belongs to protection domain of the present utility model to the scheme after the utility model simple transformation.
Claims (3)
1. a Continuous Drive device for low retraction ground tackle holding nut, is characterized in that: comprise retraction support (1), driving ring (2), drive sleeve (3), attaching nut (4) and ground tackle (5); Described ground tackle (5) comprises anchor ring (51) and holding nut (52), and described anchor ring (51) is connected by screw thread with one end of described attaching nut (4); Described holding nut (52) is provided with pincers cave (53), one end of described drive sleeve (3) is provided with chela (32), and described drive sleeve (3) is enclosed within described attaching nut (4) and goes up and pass through described chela (32) and match with the pincers cave (53) on described holding nut (52); Described drive sleeve (3) is also provided with ratchet holes (31), in described ratchet holes (31), is provided with spring (7) and ratchet (6); Described driving ring (2) arranged outside has handle (21), and inner side is provided with the ratchet slot (22) circumferentially distributed, and described driving ring (2) is enclosed within described drive sleeve (3) and goes up and pass through ratchet slot (22) and match with described ratchet (6); Described retraction support (1) is enclosed within described driving ring (2), drive sleeve (3) and ground tackle (5).
2. the Continuous Drive device of low retraction ground tackle holding nut as claimed in claim 1, is characterized in that: the ratchet holes (31) in described drive sleeve (3) is set to one or more, and circumferentially distributes.
3. the Continuous Drive device of low retraction ground tackle holding nut as claimed in claim 1, is characterized in that: the quantity in described chela (32) and described pincers cave (53) is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520093903.9U CN204475191U (en) | 2015-02-10 | 2015-02-10 | A kind of Continuous Drive device of low retraction ground tackle holding nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520093903.9U CN204475191U (en) | 2015-02-10 | 2015-02-10 | A kind of Continuous Drive device of low retraction ground tackle holding nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204475191U true CN204475191U (en) | 2015-07-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520093903.9U Active CN204475191U (en) | 2015-02-10 | 2015-02-10 | A kind of Continuous Drive device of low retraction ground tackle holding nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204475191U (en) |
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2015
- 2015-02-10 CN CN201520093903.9U patent/CN204475191U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |