CN203420224U - Steel strand pulling device - Google Patents
Steel strand pulling device Download PDFInfo
- Publication number
- CN203420224U CN203420224U CN201320439518.6U CN201320439518U CN203420224U CN 203420224 U CN203420224 U CN 203420224U CN 201320439518 U CN201320439518 U CN 201320439518U CN 203420224 U CN203420224 U CN 203420224U
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- CN
- China
- Prior art keywords
- steel strand
- stress member
- shearing stress
- pulling
- shearing
- 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 - Lifetime
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Abstract
The utility model discloses a steel strand pulling device. The steel strand pulling device is characterized in that the steel strand pulling device comprises a pulling stress component (1). A pulling ring (2) is arranged at one end of the pulling stress component (1), inner threads are arranged on the inner wall of the pulling stress component (1), a strengthening component (3) provided with outer threads is matched with the threads of the pulling stress component (1), a conical through hole is formed in the strengthening component (3), a shearing stress component (4) matched with the conical through hole is arranged, the shearing stress component (4) can generate elastic deformation in the radial direction, the inner diameter of the shearing stress component (4) is matched with the outer diameter of a steel strand, and a plurality of annular patterns are arranged on the inner surface of the shearing stress component (4). The steel strand pulling device is simple in structure and ingenious in design, a mode of converting shearing stress into pressure stress is utilized, and the steel strand is pulled out of a rubber stick by relying on friction force.
Description
Technical field
The utility model relates to a kind of aid of applying while using steel strand, and particularly a kind of steel strand pull device.
Background technology
In the work progress of prestressed concrete box girder, steel strand in rubber bar need to be pulled out, traditional pulling mode can cause the end portion of steel strand that irregular flexural deformation occurs, this distortion can cause steel strand cannot carry out secondary use, cause shorten the service time of steel strand, wasted a large amount of resources.Therefore need to a kind ofly can, when steel strand being pulled smoothly from rubber bar out, guarantee device or method that its end portion can not deform now.
Summary of the invention
The utility model is in order to solve the existing above-mentioned deficiency of prior art, proposes a kind of simple in structurely, designs ingeniously, utilizes shearing stress to be converted into the mode of compressive stress, relies on frictional force steel strand to be pulled from rubber bar to steel strand pulling device out.
Technical solution of the present utility model is: a kind of steel strand pull device, it is characterized in that: described pulling device comprises tensile stress member 1, in one end of tensile stress member 1, be provided with and pull ring 2, on the inwall of tensile stress member 1, be provided with internal thread, being provided with externally threaded strenthening member 3 matches with tensile stress member 1 screw thread, in strenthening member 3, offer taper through hole, be provided with shearing stress member 4 with taper through hole matches, can there is diametrically elastic deformation in shearing stress member 4, the internal diameter of shearing stress member 4 and the external diameter of steel strand match, and be also provided with a plurality of ring-type lines on the surface of shearing stress member 4 internal diameters.
Described along the symmetrical twice joint-cutting 5 of axially offering of shearing stress member 4.
Compared with the existing technology, tool has the following advantages the utility model:
The steel strand of this kind of form of structure pull device, and it is simple in structure, designs ingenious, rationally distributed.It,, in traditional steel strand pulling process, need to carry out bending to the end portion of steel strand, causes the problem of steel strand generation loss, designs a kind of structure of utilizing frictional force to pull steel strand.The pulling force that the pulling device of this structure produces tensile stress member is by strenthening member and the acting in conjunction of shearing stress member, be converted into shearing stress, again this part shearing stress is converted into compressive stress, thereby reach the object that increases frictional force between steel strand and shearing stress member internal diameter, utilize this frictional force that steel strand are pulled out from rubber bar, the spoilage of steel strand is 0 in this case, and it can pull it under the prerequisite of not damaging steel strand, so that the secondary of steel strand is used.And its assembling is simple, cheap, and applicability is wide, therefore can say that it has possessed multiple advantage, be particularly suitable for applying in the art, its market prospects are very wide.
Accompanying drawing explanation
Fig. 1 is the front view of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described.As shown in Figure 1: a kind of steel strand pull device, it comprises tensile stress member 1, in one end of tensile stress member 1, be provided with the pulling ring 2 for pulling, and be provided with internal thread on the inwall of tensile stress member 1, being provided with externally threaded strenthening member 3 matches with tensile stress member 1 screw thread, in strenthening member 3, offer the through hole of taper, be provided with shearing stress member 4 with this taper through hole matches, the internal diameter of this shearing stress member 4 and the external diameter of steel strand match, can there is elastic deformation in shearing stress member 4 simultaneously diametrically, shearing stress member 4 can have various structures form, wherein a kind of structure is axially to offer the symmetrically arranged joint-cutting 5 of twice along shearing stress member 4, when shearing stress member 4 is subject to extruding radially, joint-cutting 5 diminishes, and the surface at the internal diameter of shearing stress member 4, is also provided with a plurality of ring-type lines, for increasing friction force.
The course of work that the steel strand of the utility model embodiment pull device is as follows: first shearing stress member 4 is socketed on steel strand, then shearing stress member 4 is enclosed within strenthening member 3, and strenthening member 3 is threaded in tensile stress member 1, finally draw-gear is connected with pulling ring 2, when draw-gear pulls tensile stress member 1, tensile stress member 1 drives strenthening member 3 to move with respect to steel strand, owing to offering the taper through hole matching with shearing stress member 4 in strenthening member 3, therefore when there is relative displacement with shearing stress member 4 in strenthening member 3, can there is elastic deformation in the shearing stress member 4 of taper, joint-cutting 5 diminishes, socket steel strand are within it carried out to the extruding that footpath makes progress, because the inside diameter surface of shearing stress member 4 is provided with a plurality of ring-type lines, therefore can provide enough large frictional force, in 1 motion of tensile stress member, steel strand are pulled out from rubber bar.
Claims (2)
1. steel strand pull device, it is characterized in that: described pulling device comprises tensile stress member (1), in one end of tensile stress member (1), be provided with and pull ring (2), on the inwall of tensile stress member (1), be provided with internal thread, being provided with externally threaded strenthening member (3) matches with tensile stress member (1) screw thread, in strenthening member (3), offer taper through hole, be provided with shearing stress member (4) with taper through hole matches, can there is diametrically elastic deformation in shearing stress member (4), the internal diameter of shearing stress member (4) and the external diameter of steel strand match, and the surface at shearing stress member (4) internal diameter is also provided with a plurality of ring-type lines.
2. steel strand according to claim 1 pull device, it is characterized in that: described along the symmetrical twice joint-cutting (5) of axially offering of shearing stress member (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439518.6U CN203420224U (en) | 2013-07-23 | 2013-07-23 | Steel strand pulling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320439518.6U CN203420224U (en) | 2013-07-23 | 2013-07-23 | Steel strand pulling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203420224U true CN203420224U (en) | 2014-02-05 |
Family
ID=50019324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320439518.6U Expired - Lifetime CN203420224U (en) | 2013-07-23 | 2013-07-23 | Steel strand pulling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203420224U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410095A (en) * | 2013-07-23 | 2013-11-27 | 中铁十三局集团第一工程有限公司 | Steel strand pulling device |
-
2013
- 2013-07-23 CN CN201320439518.6U patent/CN203420224U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410095A (en) * | 2013-07-23 | 2013-11-27 | 中铁十三局集团第一工程有限公司 | Steel strand pulling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA RAILWAY CONSTRUCTION BRIDGE ENGINEERING BURE Free format text: FORMER NAME: CHINA RAILWAY 13TH BUREAU GROUP 1ST ENGINEERING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 116000 the Yellow River Road, Xigang District, Liaoning, No. 219, No. Patentee after: CHINA RAILWAY CONSTRUCTION BRIDGE ENGINEERING BUREAU GROUP 1ST ENGINEERING CO., LTD. Address before: 116000 the Yellow River Road, Xigang District, Liaoning, No. 219, No. Patentee before: China Railway 13th Bureau Group 1st Engineering Co., Ltd. |