Ultra-short exposed steel strand releasing system for wind power generation tower drum

Abstract

The utility model belongs to the technical field of steel strand releasing and tensioning, and particularly relates to a wind power generation tower ultra-short exposed steel strand releasing and tensioning system which comprises a first fixing ring. A supporting assembly is arranged on the first fixing ring, a connecting assembly is arranged on the first steel strand, and the connecting assembly comprises a threaded sleeve, a clamping ring and a first stud; a threaded sleeve is movably arranged on the outer wall of the first steel strand, a clamping ring is arranged on the inner wall of the threaded sleeve, a first stud is installed on the lower portion of the inner wall of the threaded sleeve in a threaded mode, and the lower end of the first steel strand penetrates through the threaded sleeve and the clamping ring to extend to the inner wall of the first stud. The first stud with the first steel strand is installed in the threaded sleeve in a threaded mode, the first stud is rotated to enable the clamping ring to move upwards under extrusion of the first stud, so that the first steel strand is clamped and fixed, the clamping ring below the second fixing ring clamps a second steel strand through the same method, and the clamping ring is fixed through the second fixing ring. Therefore, the steel strand is extended, and the problem that the length of the steel strand is not enough and the steel strand is inconvenient to release is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel strand relaxation, and particularly relates to a steel strand relaxation system for ultra-short exposed steel strands of a wind power generation tower barrel. Background Technique

[0002] In the field of wind power generation, the prestressed tensioning technology in tower barrel construction is crucial. This technology establishes prestress through tensioning machinery, and relaxation is the truncation step after tensioning. However, in the relaxation of grouped riveted steel strands of wind turbine tower barrels, the existing technology faces challenges.

[0003] The existing prestressed tensioning and relaxation technologies mainly target standard-length steel strands. However, steel strands are often used in the grouped riveting of wind turbine tower barrels. After tensioning, the elongation of these steel strands is much greater than the reserved length, resulting in inconvenient direct relaxation. Forcing relaxation may not be able to complete the overall relaxation work at once, thus bringing safety risks.

[0004] A dedicated relaxation system is designed for the relaxation of ultra-short steel strands in the grouped riveting of wind turbine tower barrels. This system solves the problem of excessive elongation of steel strands through a single-hole connector and focuses on improving safety performance, providing a more reliable and safe solution for tower barrel construction. Content of the Utility Model

[0005] In order to overcome the problem that during the relaxation of the steel strands in a wind turbine tower barrel, due to the actual elongation being much greater than the reserved length, it is inconvenient to perform relaxation.

[0006] The technical solution of the utility model is: a steel strand relaxation system for ultra-short exposed steel strands of a wind power generation tower barrel, including a first fixing ring; evenly distributed first limiting grooves are penetrated through the upper and lower ends of the first fixing ring, and first steel strands are arranged in the first limiting grooves. A support assembly is arranged on the first fixing ring, and a connection assembly is arranged on the first steel strand. The connection assembly includes a screw sleeve, a clamping ring, and a first stud; a screw sleeve is movably arranged on the outer wall of the first steel strand, a clamping ring is movably arranged on the inner wall of the screw sleeve, a first stud is threadedly installed at the lower part of the inner wall of the screw sleeve, the lower end of the first steel strand passes through the screw sleeve and the clamping ring and extends to the inner wall of the first stud, and a second steel strand is movably arranged at the lower part of the inner wall of the first stud. A relaxation assembly is arranged on the second steel strand.

[0007] Preferably, install the support assembly on the first fixing ring, then pass the first steel strand on the first fixing ring through the screw sleeve and the clamping ring and extend it to the inner wall of the first stud. Then rotate the first stud on the screw sleeve to drive the clamping ring to move upward, so that the first stud clamps the first steel strand. Then fix the second steel strand in the same way. Then use the relaxation assembly on the support assembly to drive the second steel strand to pull down to realize the relaxation work of the first steel strand on the first fixing ring.

[0008] Preferably, the support assembly includes a first fixing block, a fixing column, a first groove, a connecting column, a second fixing block and a second groove; the outer wall of the first fixing ring is provided with the first fixing block, the upper and lower ends of the first fixing block are penetrated with the first groove, the inner wall of the first groove fits the outer wall of the first fixing ring, the left and right ends of the first fixing block are fixedly connected with the fixing column, the lower end of the first fixing block is fixedly connected with uniformly distributed connecting columns, the other ends of the uniformly distributed connecting columns are fixedly connected with the second fixing block in total, the upper and lower ends of the second fixing block are penetrated with the second groove, and the support surface for the subsequent tension releasing of the tension releasing assembly is provided conveniently by arranging the support assembly.

[0009] Preferably, the connecting assembly includes a second fixing ring, the outer wall of the first stud is fixedly connected with the second fixing ring, the connecting assembly is symmetrically distributed at the upper and lower cross-sectional positions of the second fixing ring, the second steel strand sequentially passes through the clamping ring, the screw sleeve and the second groove from top to bottom and extends to the lower end of the second fixing block, by threadedly installing the first stud with the first steel strand in the screw sleeve and rotating the first stud, the first stud moves up and down in the screw sleeve, then the clamping ring moves upward by the extrusion of the first stud, so as to clamp and fix the first steel strand in the clamping ring. After the fixing of the first steel strand is completed, the second steel strand passes through the screw sleeve and the clamping ring below the second fixing ring from bottom to top and then extends to the lower part of the inner wall of the first stud, by rotating the screw sleeve below the second fixing ring, the clamping ring in the screw sleeve below the second fixing ring clamps the second steel strand, so as to realize the connection between the second steel strand and the first steel strand.

[0010] Preferably, the tension releasing assembly includes a third fixing block, a jack, a fourth fixing block, a second limiting groove and a limiting ring; the third fixing block, the jack and the fourth fixing block are movably arranged on the outer wall of the second steel strand, the jack is located at one end where the third fixing block and the fourth fixing block are close to each other, one telescopic end of the jack faces the third fixing block, and the other telescopic end faces the fourth fixing block, the outer wall of the second steel strand is fixedly connected with the limiting ring, the lower end of the fourth fixing block is provided with the second limiting groove, the second limiting groove is adapted to the limiting ring, after the second steel strand is fixed, by inserting the second limiting groove on the fourth fixing block into the limiting ring, the height of the fourth fixing block is fixed on the outer wall of the second steel strand, then the upper end of the third fixing block is attached to the lower end of the second fixing block, then the jack is started, the upper end of the telescopic end of the jack supports on the second fixing block through the third fixing block, so that the lower end of the telescopic end of the jack stretches the fourth fixing block, so that the second steel strand pulls down the first steel strand.

[0011] Preferably, a first support block is arranged below the fixing column. The lower end of the first support block is fixedly connected with a second stud. A threaded pipe is arranged below the second stud. The lower end of the second stud is threadedly installed on the upper part of the inner wall of the threaded pipe. The lower end of the threaded pipe is fixedly connected with a second support block. By rotating the threaded pipe, the overall length from the first support block to the second support block can be controlled, thereby realizing the work of supporting the support device.

[0012] Preferably, the upper end of the third fixing block fits with the lower end of the second fixing block, thereby providing an upper support surface for the subsequent work of the tension release assembly.

[0013] Preferably, a clamping ring is movably arranged on the inner wall of the first limiting groove, and a first steel strand is movably arranged on the inner wall of the clamping ring. When the first steel strand performs the tension release work, by moving the clamping ring up and down on the first steel strand, the first steel strand can be intermittently fixed.

[0014] Advantages of the present utility model:

[0015] 1. By threadedly installing the first stud with the first steel strand in the screw sleeve, rotating the first stud to move the first stud up and down in the screw sleeve, and then making the clamping ring move upward through the extrusion of the first stud, thereby clamping and fixing the first steel strand in the clamping ring. After the fixing of the first steel strand is completed, the second steel strand is sequentially passed through the screw sleeve and the clamping ring below the second fixing ring from bottom to top and then extends to the lower part of the inner wall of the first stud. By rotating the screw sleeve below the second fixing ring, the clamping ring in the screw sleeve below the second fixing ring clamps the second steel strand, thereby elongating the steel strand, solving the problem that the actual elongation of the steel strand is much larger than the reserved length, resulting in inconvenient tension release.

[0016] 2. After the fixing of the second steel strand is completed, by inserting the second limiting groove on the fourth fixing block into the limiting ring, the height of the fourth fixing block is fixed on the outer wall of the second steel strand. Then, the upper end of the third fixing block is fitted with the lower end of the second fixing block, and then the jack is opened. The upper end of the telescopic end of the jack is supported on the second fixing block through the third fixing block, so that the lower end of the telescopic end of the jack pulls the fourth fixing block, thereby making the second steel strand pull the first steel strand downward.

[0017] 3. When the first steel strand performs the tension release work, by moving the clamping ring up and down on the first steel strand, the first steel strand can be intermittently fixed, thereby preventing the lack of a fixing structure during the tension release process and causing potential safety hazards in the follow-up. Description of the Drawings

[0018] Figure 1 Shown is a three-dimensional structural schematic diagram of a tension release system for ultra-short exposed steel strands of a wind power generation tower barrel of the present utility model;

[0019] Figure 2 Shown is a three-dimensional structural schematic diagram of a first fixing ring and a tension releasing assembly of an ultra-short exposed steel strand tension releasing system for a wind power generation tower barrel of the present utility model;

[0020] Figure 3 Shown is a three-dimensional structural schematic diagram of a support assembly of an ultra-short exposed steel strand tension releasing system for a wind power generation tower barrel of the present utility model;

[0021] Figure 4 Shown is a three-dimensional structural exploded schematic diagram of a connection assembly of an ultra-short exposed steel strand tension releasing system for a wind power generation tower barrel of the present utility model.

[0022] The reference signs in the drawings are: 1, first fixing ring; 2, first limiting groove; 201, first fixing block; 202, fixing column; 203, first groove body; 204, connecting column; 205, second fixing block; 206, second groove body; 3, clamping ring; 301, screw sleeve; 302, clamping ring; 303, first stud; 304, second fixing ring; 4, first steel strand; 401, third fixing block; 402, jack; 403, fourth fixing block; 404, second limiting groove; 405, limiting ring; 5, first support block; 6, second stud; 7, threaded pipe; 8, second support block; 9, second steel strand. Detailed implementation manners

[0023] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0024] Embodiment 1

[0025] Please refer to Figures 1-4 , an ultra-short exposed steel strand tension releasing system for a wind power generation tower barrel, comprising a first fixing ring 1; uniformly distributed first limiting grooves 2 are penetrated through the upper and lower ends of the first fixing ring 1, a first steel strand 4 is arranged in the first limiting grooves 2, a support assembly is arranged on the first fixing ring 1, a connection assembly is arranged on the first steel strand 4, and the connection assembly includes a screw sleeve 301, a clamping ring 302 and a first stud 303; a screw sleeve 301 is movably arranged on the outer wall of the first steel strand 4, a clamping ring 302 is movably arranged on the inner wall of the screw sleeve 301, a first stud 303 is threadedly installed at the lower part of the inner wall of the screw sleeve 301, the lower end of the first steel strand 4 passes through the screw sleeve 301 and the clamping ring 302 and extends to the inner wall of the first stud 303, a second steel strand 9 is movably arranged at the lower part of the inner wall of the first stud 303, and a tension releasing assembly is arranged on the second steel strand 9.

[0026] Please refer to Figure 1 and 3, in this embodiment, the support assembly includes a first fixing block 201, a fixing column 202, a first groove 203, a connecting column 204, a second fixing block 205 and a second groove 206; a first fixing block 201 is provided on the outer wall of the first fixing ring 1, and through holes are opened at the upper and lower ends of the first fixing block 201 to form a first groove 203, the inner wall of the first groove 203 fits with the outer wall of the first fixing ring 1, fixing columns 202 are fixedly connected to the left and right ends of the first fixing block 201, a uniformly distributed connecting column 204 is fixedly connected to the lower end of the first fixing block 201, and the other ends of the uniformly distributed connecting columns 204 are commonly fixedly connected to a second fixing block 205, and through holes are opened at the upper and lower ends of the second fixing block 205 to form a second groove 206.

[0027] Please refer to Figure 4 , in this embodiment, the connecting assembly includes a second fixing ring 304, a second fixing ring 304 is fixedly connected to the outer wall of the first stud 303, the connecting assembly is symmetrically distributed at the upper and lower cross-sectional positions of the second fixing ring 304, the second steel strand 9 passes through the clamping ring 302, the screw sleeve 301 and the second groove 206 from top to bottom and extends to the lower end of the second fixing block 205, and the upper end of the third fixing block 401 fits with the lower end of the second fixing block 205.

[0028] In this embodiment: Install the support assembly on the first fixing ring 1, then pass the first steel strand 4 on the first fixing ring 1 through the screw sleeve 301 and the clamping ring 302 and extend it to the inner wall of the first stud 303, thread the first stud 303 with the first steel strand 4 into the screw sleeve 301, rotate the first stud 303 to move the first stud 303 up and down in the screw sleeve 301, and then make the clamping ring 302 move upward by the extrusion of the first stud 303, so as to clamp and fix the first steel strand 4 in the clamping ring 302. After the fixing of the first steel strand 4 is completed, pass the second steel strand 9 from bottom to top through the screw sleeve 301 and the clamping ring 302 located below the second fixing ring 304 and then extend it to the lower part of the inner wall of the first stud 303. By rotating the screw sleeve 301 below the second fixing ring 304, the clamping ring 302 in the screw sleeve 301 below the second fixing ring 304 clamps the second steel strand 9, so as to realize the connection between the second steel strand 9 and the first steel strand 4.

[0029] Embodiment 2

[0030] Please refer to Figure 1 and Figure 2, on the basis of Embodiment 1, the present application provides a technical solution: the tension release assembly includes a third fixing block 401, a jack 402, a fourth fixing block 403, a second limiting groove 404 and a limiting ring 405; a third fixing block 401, a jack 402 and a fourth fixing block 403 are movably arranged on the outer wall of the second steel strand 9, the jack 402 is located at one end where the third fixing block 401 and the fourth fixing block 403 are close to each other, one telescopic end of the jack 402 faces the third fixing block 401, and the other telescopic end faces the fourth fixing block 403. A limiting ring 405 is fixedly connected to the outer wall of the second steel strand 9. A second limiting groove 404 is formed at the lower end of the fourth fixing block 403, and the second limiting groove 404 is adapted to the limiting ring 405.

[0031] Please refer to Figures 1-2 , in this embodiment, a clamping ring 3 is movably arranged on the inner wall of the first limiting groove 2, a first steel strand 4 is movably arranged on the inner wall of the clamping ring 3, a first supporting block 5 is arranged below the fixing column 202, a second stud 6 is fixedly connected to the lower end of the first supporting block 5, a threaded pipe 7 is arranged below the second stud 6, the lower end of the second stud 6 is threadedly installed on the upper part of the inner wall of the threaded pipe 7, and a second supporting block 8 is fixedly connected to the lower end of the threaded pipe 7.

[0032] In this embodiment: by rotating the threaded pipe 7, the overall length from the first supporting block 5 to the second supporting block 8 can be controlled, so as to realize the work of supporting the supporting device. After the second steel strand 9 is fixed, by inserting the second limiting groove 404 on the fourth fixing block 403 into the limiting ring 405, the height of the fourth fixing block 403 on the outer wall of the second steel strand 9 can be fixed. Then, the upper end of the third fixing block 401 is attached to the lower end of the second fixing block 205, and then the jack 402 is started, so that the upper end of the telescopic end of the jack 402 is supported on the second fixing block 205 through the third fixing block 401, so that the lower end of the telescopic end of the jack 402 stretches the fourth fixing block 403, so that the second steel strand 9 pulls down the first steel strand 4.

[0033] Working principle: Install the support component on the first fixing ring 1. By rotating the threaded tube 7, the overall length from the first support block 5 to the second support block 8 can be controlled, so as to realize the support work of the support device. Then, the first steel strand 4 on the first fixing ring 1 passes through the screw sleeve 301 and the clamping ring 302 and extends to the inner wall of the first stud 303. By threadedly installing the first stud 303 with the first steel strand 4 into the screw sleeve 301 and rotating the first stud 303, the first stud 303 moves up and down in the screw sleeve 301. Then, the clamping ring 302 moves upward under the extrusion of the first stud 303, so as to clamp and fix the first steel strand 4 in the clamping ring 302. After the first steel strand 4 is fixed, the second steel strand 9 passes through the screw sleeve 301 and the clamping ring 302 below the second fixing ring 304 from bottom to top and then extends to the lower part of the inner wall of the first stud 303. By rotating the screw sleeve 301 below the second fixing ring 304, the clamping ring 302 in the screw sleeve 301 below the second fixing ring 304 clamps the second steel strand 9, so as to realize the connection between the second steel strand 9 and the first steel strand 4. By rotating the threaded tube 7, the overall length from the first support block 5 to the second support block 8 can be controlled, so as to realize the support work of the support device. After the second steel strand 9 is fixed, insert the second limiting groove 404 on the fourth fixing block 403 into the limiting ring 405, so that the fourth fixing block 403 is height-fixed on the outer wall of the second steel strand 9. Then, fit the upper end of the third fixing block 401 with the lower end of the second fixing block 205. Then, start the jack 402, so that the upper end of the telescopic end of the jack 402 is supported on the second fixing block 205 through the third fixing block 401, so that the lower end of the telescopic end of the jack 402 stretches the fourth fixing block 403, so that the second steel strand 9 pulls down the first steel strand 4.

[0034] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. An ultra-short exposed strand relaxation system for a wind power tower barrel, comprising a first fixing ring (1); characterized in that: The upper and lower ends of the first fixing ring (1) are penetrated and provided with uniformly distributed first limiting grooves (2). A first steel strand (4) is arranged in the first limiting grooves (2). A supporting component is arranged on the first fixing ring (1). A connecting component is arranged on the first steel strand (4). The connecting component includes a screw sleeve (301), a clamping ring (302) and a first stud (303). A screw sleeve (301) is movably arranged on the outer wall of the first steel strand (4). A clamping ring (302) is movably arranged on the inner wall of the screw sleeve (301). A first stud (303) is threadedly installed at the lower part of the inner wall of the screw sleeve (301). The lower end of the first steel strand (4) passes through the screw sleeve (301), the clamping ring (302) and extends to the inner wall of the first stud (303). A second steel strand (9) is movably arranged at the lower part of the inner wall of the first stud (303). A tension releasing component is arranged on the second steel strand (9).

2. The ultra-short exposed strand relaxation system for a wind power tower barrel according to claim 1, characterized in that: The supporting component includes a first fixing block (201), a fixing column (202), a first groove body (203), a connecting column (204), a second fixing block (205) and a second groove body (206). A first fixing block (201) is arranged on the outer wall of the first fixing ring (1). The upper and lower ends of the first fixing block (201) are penetrated and provided with a first groove body (203). The inner wall of the first groove body (203) is attached to the outer wall of the first fixing ring (1). Fixing columns (202) are fixedly connected to the left and right ends of the first fixing block (201). Connecting columns (204) are fixedly connected to the lower end of the first fixing block (201). The other ends of the uniformly distributed connecting columns (204) are fixedly connected to a second fixing block (205) in total. The upper and lower ends of the second fixing block (205) are penetrated and provided with a second groove body (206).

3. The ultra-short exposed steel strand relaxation system for a wind power tower barrel according to claim 2, wherein: The connecting component includes a second fixing ring (304). A second fixing ring (304) is fixedly connected to the outer wall of the first stud (303). The connecting component is symmetrically distributed according to the upper and lower cross-sectional positions of the second fixing ring (304). The second steel strand (9) sequentially passes through the clamping ring (302), the screw sleeve (301) and the second groove body (206) from top to bottom and extends to the lower end of the second fixing block (205).

4. The ultra-short exposed steel strand relaxation system for a wind power tower barrel according to claim 1, characterized in that: The tension releasing component includes a third fixing block (401), a jack (402), a fourth fixing block (403), a second limiting groove (404) and a limiting ring (405). A third fixing block (401), a jack (402) and a fourth fixing block (403) are movably arranged on the outer wall of the second steel strand (9). The jack (402) is located at one end where the third fixing block (401) and the fourth fixing block (403) are close to each other. One telescopic end of the jack (402) faces the third fixing block (401), and the other telescopic end faces the fourth fixing block (403). A limiting ring (405) is fixedly connected to the outer wall of the second steel strand (9). A second limiting groove (404) is opened at the lower end of the fourth fixing block (403). The second limiting groove (404) is adapted to the limiting ring (405).

5. The overshort exposed steel strand relaxation system for a wind power tower barrel according to claim 2, characterized in that: A first support block (5) is arranged below the fixed column (202). A second stud (6) is fixedly connected to the lower end of the first support block (5). A threaded pipe (7) is arranged below the second stud (6). The lower end of the second stud (6) is threadedly installed on the upper part of the inner wall of the threaded pipe (7). A second support block (8) is fixedly connected to the lower end of the threaded pipe (7).

6. A tension release system for ultra-short exposed steel strands of a wind power tower barrel according to claim 4, characterized in that: The upper end of the third fixed block (401) is in contact with the lower end of the second fixed block (205).

7. A prestress relaxation system for ultra-short exposed steel strands of a wind power tower barrel according to claim 1, characterized in that: A clamping ring (3) is movably arranged on the inner wall of the first limiting groove (2). A first steel strand (4) is movably arranged on the inner wall of the clamping ring (3).

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