Steel strand threading device
By designing a steel strand thread threading device including a protective sleeve, a limit sleeve and a fixture, the combination of S-shaped through holes and threaded holes is solved by solving the time-consuming and laborious treatment of the upsetting head when the steel strand thread thread threading is penetrated in the prior art. and the problem of anchor ring deformation, the stable fixation of steel strands and the simplification of operation are achieved.
Patent Information
- Application Number
- CN202420518029.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-18
AI Technical Summary
In bridge projects, existing steel strand cable passers-by device requires upsetting head treatment during cable passes, which is time-consuming and labor-intensive and can easily lead to deformation of the anchor ring, affecting the fixing effect.
A steel strand thread threading device including a protective sleeve, a limit sleeve and a fixing member is designed. The fixing member consists of an upper fixing seat, a lower fixing seat, a connecting rod and a locking member, through the S-shaped through hole and threaded hole In combination, use the external threads and slits of the sleeve to fix the steel strands to avoid upsetting head treatment.
The device simplifies operation, reduces impact on the anchor ring, avoids deformation, realizes stable fixation of the steel strand, and improves cable penetration efficiency.
Smart Images
Figure CN222160950U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cable threading tools, in particular to a steel strand cable threading device. Background Art
[0002] In bridge engineering construction, the prestressed system is an important part of the construction of large-span bridges, so prestressed construction plays an important role, especially in the large-span stage cast-in-place beams, all of which are prestressed pipes in the form of pre-buried pipes. After the stage casting is completed, the steel strands are inserted for tensioning. Usually, the prestressed pipes are set into a spatial curve to resist the bending moment, and the number of steel strands in the channel is generally greater than 5, and as many as dozens. In order to facilitate the threading of the cable, a steel strand threading device is generally used. However, when the steel strand threading device currently used is used for the threading of the steel strand, the center wire of the steel strand needs to be swaged after passing through the anchor ring to fix the steel strand to the anchor ring to prevent the steel strand from falling off during the threading process. When performing the swaging process, it is necessary to use tools to hammer. On the one hand, the operation is time-consuming and labor-intensive. On the other hand, it is easy to deform the anchor ring during the hammering process, affecting its fixation with the bundle body. Utility Model Content
[0003] In view of this, the utility model aims to provide a steel strand threading device to solve the above-mentioned problem.
[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:
[0005] A steel strand threading device comprises a protective sleeve, a limiting sleeve and a fixing piece; the upper end of the protective sleeve is closed and the lower end is open, and the fixing piece is sleeved in the protective sleeve; the fixing piece comprises an upper fixing seat, a lower fixing seat, a connecting rod and a locking piece, the upper fixing seat and the lower fixing seat are connected as a whole through the connecting rod, the lower fixing seat is provided with a plurality of S-shaped through holes, the upper fixing seat is provided with threaded holes corresponding to the S-shaped through holes one by one, and the locking piece is inserted in the threaded holes; the locking piece comprises a sleeve and a handle fixed at the top end of the sleeve, the outer side wall of the sleeve is provided with an external thread screwed with the threaded hole, and the sleeve is also provided with a plurality of slits, and the lower end of the slits extends to the bottom end of the sleeve to form an opening; the upper end of the limiting sleeve is inserted into the protective sleeve and screwed with the protective sleeve, and the upper end of the limiting sleeve also abuts against the lower end of the lower fixing seat to limit the position of the fixing piece in the protective sleeve.
[0006] Furthermore, four connecting rods are inserted through the upper fixing seat and the lower fixing seat, and nuts screwed on the connecting rods are provided on the upper and lower surfaces of the upper and lower fixing seats.
[0007] Furthermore, the upper end of the protective cover is in an arc shape.
[0008] Furthermore, the inner wall of the sleeve gradually becomes thicker from top to bottom.
[0009] Furthermore, the threaded hole is directly opposite to the upper end of the S-shaped through hole.
[0010] Furthermore, a limiting ring for limiting the top position of the fixing member is provided at the upper part of the interior of the protective cover.
[0011] Compared with the prior art, the steel strand cable threading device described in the utility model has the following advantages:
[0012] The fixing parts of the steel strand threading device described in the utility model include an upper fixing seat, a lower fixing seat, a connecting rod and a locking part. When in use, the steel strand is first passed through the S-shaped through hole on the lower fixing seat, and then passed through the threaded hole of the upper fixing seat and inserted into the casing. When the steel strand is not inserted, the casing has an appearance of an inverted cone that is wide at the top and narrow at the bottom. After the steel strand is inserted into the casing, the casing is stretched open to form a cylindrical shape, and then the casing is screwed into the threaded hole. After tightening, the casing will squeeze the steel strand, thereby fixing the upper end of the steel strand; at the same time, the S-shaped through hole also plays a certain fixing role on the steel strand. After the steel strand is installed, the fixing part is inserted into the protective cover, and the limit sleeve is screwed on, and the fixing part is locked in the protective cover by the limit sleeve. The device is easy to operate, and there is no need to perform upsetting treatment on the steel strand. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:
[0014] Figure 1 This is a schematic structural diagram of a steel strand threading device according to an embodiment of the utility model;
[0015] Figure 2 It is a cross-sectional view of the steel strand threading device according to an embodiment of the utility model;
[0016] Figure 3 It is a partial enlarged view of the A part of the steel strand threading device described in the embodiment of the utility model;
[0017] Figure 4 It is a schematic structural diagram of the fixing member described in an embodiment of the utility model.
[0018] Description of reference numerals:
[0019] 1. Protective cover; 2. Limiting cover; 3. Fixing piece; 31. Lower fixing seat; 311. S-shaped through hole; 32. Upper fixing seat; 321. Threaded hole; 33. Connecting rod; 34. Locking piece; 341. Sleeve; 3411. External thread; 3412. Slit; 342. Handle; 35. Nut; 4. Limiting ring. DETAILED DESCRIPTION
[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0021] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0024] A steel strand threading device, comprising a protective sleeve 1, a limiting sleeve 2 and a fixing piece 3; the upper end of the protective sleeve is closed and the lower end is open, and the fixing piece is sleeved in the protective sleeve; the fixing piece comprises an upper fixing seat 32, a lower fixing seat 31, a connecting rod 33 and a locking piece 34, the upper fixing seat and the lower fixing seat are connected as a whole through the connecting rod, the lower fixing seat is provided with a plurality of S-shaped through holes 311, the upper fixing seat is provided with threaded holes 321 corresponding to the S-shaped through holes one by one, and the locking piece is inserted into the threaded holes The locking member includes a sleeve 341 and a handle 342 fixed to the top of the sleeve. The outer wall of the sleeve is provided with an external thread 3411 screwed to the threaded hole. The sleeve is also provided with a plurality of slits 3412. The lower ends of the slits extend to the bottom end of the sleeve to form an opening. The slits divide the sleeve into a plurality of strip-shaped clips. The upper end of the limit sleeve is inserted into the protective sleeve and screwed to the protective sleeve. The upper end of the limit sleeve also abuts against the lower end of the lower fixing seat to limit the position of the fixing member in the protective sleeve.
[0025] When in use, the steel strand is first passed through the S-shaped through hole on the lower fixing seat, and then inserted into the casing through the threaded hole of the upper fixing seat. When the casing is not inserted with the steel strand, its appearance is an inverted cone with a wide top and a narrow bottom. After the steel strand is inserted into the casing, the casing is stretched into a cylindrical shape, and then the casing is screwed into the threaded hole. After tightening, the casing will squeeze the steel strand, thereby fixing the upper end of the steel strand; at the same time, the S-shaped through hole also plays a certain role in fixing the steel strand. After installing the steel strand, insert the fixing part into the protective cover, screw on the limit sleeve, and lock the fixing part in the protective cover through the limit sleeve.
[0026] Exemplarily, four connecting rods are inserted through the upper fixing seat and the lower fixing seat, and nuts 35 screwed on the connecting rods are provided on the upper and lower surfaces of the upper and lower fixing seats.
[0027] Exemplarily, the upper end of the protective cover is arc-shaped.
[0028] Exemplarily, the inner wall of the casing gradually becomes thicker from top to bottom, so that the space inside the casing becomes smaller from top to bottom, which is more conducive to clamping the steel strands.
[0029] Exemplarily, the threaded hole is directly opposite to the upper end of the S-shaped through hole.
[0030] Exemplarily, a limiting ring 4 for limiting the top position of the fixing member is provided at the upper part of the interior of the protective cover.
[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A steel strand threading device, Features: It includes a protective sleeve, a limiting sleeve and a fixing piece; the upper end of the protective sleeve is closed and the lower end is open, and the fixing piece is sleeved in the protective sleeve; the fixing piece includes an upper fixing seat, a lower fixing seat, a connecting rod and a locking piece, the upper fixing seat and the lower fixing seat are connected as a whole through the connecting rod, the lower fixing seat is provided with a plurality of S-shaped through holes, the upper fixing seat is provided with threaded holes corresponding to the S-shaped through holes one by one, and the locking piece is inserted in the threaded holes; the locking piece includes a sleeve and a handle fixed at the top end of the sleeve, the outer side wall of the sleeve is provided with an external thread screwed with the threaded hole, and the sleeve is also provided with a plurality of slits, and the lower end of the slits extends to the bottom end of the sleeve to form an opening; the upper end of the limiting sleeve is inserted into the protective sleeve and screwed with the protective sleeve, and the upper end of the limiting sleeve also abuts against the lower end of the lower fixing seat to limit the position of the fixing piece in the protective sleeve.
2. The steel strand threading device according to claim 1, Features: Four connecting rods are inserted through the upper fixing seat and the lower fixing seat, and nuts screwed on the connecting rods are arranged on the upper surface and the lower surface of the upper fixing seat and the lower fixing seat.
3. The steel strand threading device according to claim 1, Features: The upper end of the protective cover is in an arc shape.
4. The steel strand threading device according to claim 1, Features: The inner wall of the sleeve gradually becomes thicker from top to bottom.
5. The steel strand threading device according to claim 1, Features: The threaded hole is directly opposite to the upper end of the S-shaped through hole.
6. The steel strand threading device according to claim 1, Features: A limiting ring for limiting the top position of the fixing member is arranged at the upper part of the interior of the protective cover.