Variable-diameter traction wheel

Abstract

The utility model discloses a variable-diameter traction wheel which comprises a fixing block, an installation opening is formed in the center of the fixing block, a bearing is installed in the installation opening in an embedded mode, a square pipe is arranged on the outer surface of the fixing block, a guide rail assembly comprises the square pipe and a threaded rod, a sliding block is arranged in the square pipe in a sliding fit mode, and the tail end of the sliding block is fixedly connected with a connecting block. Threaded holes are formed in the top and the bottom of the connecting block, a groove is formed in the top of the sliding block, a threaded barrel is matched in the groove, a hexagon socket screw is matched with the top of the threaded barrel in a threaded mode, and through holes are formed in the two sides of the square pipe. During use, a tool is used for screwing the inside hexagonal bolt and the circular plate, so that the nut end of the inside hexagonal bolt is separated from the top end face of the square pipe, the screw rod is separated from the surface of the sliding block, the sliding block and the square pipe are pushed to relatively slide to a designated position, and therefore the diameter changing effect of the traction wheel is achieved to meet the use requirements of different sizes and specifications; the application range of the traction wheel is expanded, and practicability is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of traction wheels, in particular to a diameter-variable traction wheel. Background Art

[0002] A traction sheave is a device on which the wire and cable products or semi-finished products are wound and the products are pulled forward by the friction between the sheave and the products. It is usually used in various lifting, traction and transportation occasions. According to different uses and working environments, traction sheaves can be divided into many types, such as lifting traction sheaves, wire and cable traction sheaves, etc.

[0003] The size specifications of the traction wheels currently produced and used in the market are mostly fixed. When faced with the use requirements of different size specifications, traction wheels of different size specifications need to be customized and used, which limits the use of the traction wheels, increases the use cost, and reduces the practicality of the existing traction wheels. Utility Model Content

[0004] The utility model provides a variable diameter traction wheel. By twisting the hexagon socket bolt and the circular plate, the nut end of the hexagon socket bolt is separated from the top end surface of the square tube, the screw rod is separated from the surface of the slider, and the slider and the square tube are pushed to slide relative to each other to a specified position, thereby achieving the variable diameter effect of the traction wheel to meet the use requirements of different size specifications.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A variable diameter traction wheel comprises a fixed block, a mounting opening is provided at the center of the fixed block, a bearing is embedded and installed in the mounting opening, and a square tube is arranged on the outer surface of the fixed block.

[0007] The guide rail assembly includes a square tube and a screw rod. A slider is slidably fitted inside the square tube. The end of the slider is fixedly connected to a connecting block. The top and bottom of the connecting block are provided with threaded holes. A groove is provided on the top of the slider. A threaded barrel is fitted in the groove. The top thread of the threaded barrel is fitted with a hexagonal bolt. Through holes are provided on both sides of the square tube. A hexagonal nut is fixedly connected to the outer surface of the square tube. The screw rods are respectively fitted with the through holes and the hexagonal nut of the square tube. One end of the screw rod is fixedly connected to a round plate.

[0008] Preferably, the number of the connecting blocks is eight, and each connecting block is provided with two threaded holes.

[0009] Preferably, each connecting block is provided with two bolts.

[0010] Preferably, a bolt is fitted in the threaded hole, and a tension spring is hung on the bolt.

[0011] Preferably, the number of the tension springs is sixteen, and both ends of each tension spring are respectively arranged on bolts on two adjacent connecting blocks.

[0012] Preferably, the end of the screw rod overlaps the outer surface of the slider.

[0013] The utility model has the following beneficial effects:

[0014] When in use, a tool is used to screw the hexagon socket bolt and the round plate, so that the nut end of the hexagon socket bolt is separated from the top end surface of the square tube, and the screw rod is separated from the surface of the slider, so that the slider and the square tube are pushed to slide relative to each other to a specified position, thereby achieving a diameter-changing effect of the traction wheel to meet the use requirements of different size specifications, expand the application surface of the traction wheel, and enhance practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is one of the overall structural schematic diagrams of a variable diameter traction wheel;

[0016] Figure 2 This is the second schematic diagram of the overall structure of a variable diameter traction wheel;

[0017] Figure 3 This is a schematic diagram of the structure of the guide rail assembly of the utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure of the square tube, the connection block and the threaded hole of the utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure of a square tube, a hexagonal nut, a screw rod and a round plate of a variable diameter traction wheel proposed by the utility model;

[0020] Figure 6 For the utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0021] Figure 7 For the utility model Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0022] In the figure: 1, fixing block; 2, bearing; 3, guide rail assembly; 301, square tube; 302, slider; 303, connecting block; 304, threaded hole; 305, threaded barrel; 306, hexagon socket bolt; 307, hexagon nut; 308, screw; 309, round plate; 4, bolt; 5, tension spring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-7 A variable diameter traction wheel comprises a fixed block 1, a mounting opening is opened at the center of the fixed block 1, a bearing 2 is embedded and installed in the mounting opening, and a square tube 301 is arranged on the outer surface of the fixed block 1.

[0025] The guide rail assembly 3 includes a square tube 301 and a screw rod 308. A slider 302 is slidably fitted in the square tube 301. A connecting block 303 is fixedly connected to the end of the slider 302. Threaded holes 304 are provided on the top and bottom of the connecting block 303. There are eight connecting blocks 303. Two threaded holes 304 are provided on each connecting block 303. Two bolts 4 are provided on each connecting block 303. Bolts 4 are fitted in the threaded holes 304. Tension springs 5 ​​are hung on the bolts 4. There are sixteen tension springs 5. When the slider 302 is pushed, the tension springs 5 ​​are in a telescopic state, so that the distance between two adjacent connecting blocks 303 can be ensured. The distance is within the specified range to ensure the overall roundness of the traction wheel. The two ends of each tension spring 5 can be pulled to be respectively arranged on the bolts 4 on the two adjacent connecting blocks 303. A groove is provided on the top of the slider 302, and a threaded cylinder 305 is matched in the groove. The top thread of the threaded cylinder 305 is matched with a hexagon socket bolt 306. Through holes are provided on both sides of the square tube 301. A hexagonal nut 307 is fixedly connected to the outer surface of the square tube 301. The screw 308 is respectively matched with the through hole of the square tube 301 and the hexagonal nut 307. One end of the screw 308 is fixedly connected to a circular plate 309, and the end of the screw 308 is overlapped on the outer surface of the slider 302.

[0026] When in use, it is only necessary to use a tool to tighten the hexagon socket bolt 306 and the circular plate 309, so that the nut end of the hexagon socket bolt 306 is separated from the top end surface of the square tube 301, and the circular plate 309 drives the screw rod 308 to mesh with the hexagonal nut 307 to generate axial displacement, so that the screw rod 308 is separated from the surface of the slider 302, and then the slider 302 and the square tube 301 are pushed to slide relative to each other to a specified position, and then the hexagon socket bolt 306 and the circular plate 309 are screwed until the nut end of the hexagon socket bolt 306 is in close contact with the square tube 301, so that the circular plate 309 drives the screw rod 308 to mesh with the hexagonal nut 307, so that the screw rod 308 is in close contact with the surface of the slider 302, thereby fixing the position of the square tube 301 and the slider 302, thereby achieving the variable diameter effect of the traction wheel, so as to meet the use requirements of different size specifications, expand the applicable surface of the traction wheel, and enhance practicality.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A variable diameter traction wheel, comprising a fixed block (1), a mounting opening being provided at the center of the fixed block (1), a bearing (2) being embedded and installed in the mounting opening, and a square tube (301) being provided on the outer surface of the fixed block (1); Features: The invention also comprises a guide rail assembly (3), wherein the guide rail assembly (3) comprises a square tube (301) and a screw rod (308), wherein a slider (302) is slidably fitted in the square tube (301), and a connecting block (303) is fixedly connected to the end of the slider (302), and threaded holes (304) are provided at the top and bottom of the connecting block (303), and a groove is provided at the top of the slider (302), and a threaded cylinder (305) is fitted in the groove, and a hexagon socket bolt (306) is threadedly fitted at the top of the threaded cylinder (305), and through holes are provided on both sides of the square tube (301), and a hexagonal nut (307) is fixedly connected to the outer surface of the square tube (301), and the screw rod (308) is respectively fitted to the through hole and the hexagonal nut (307) of the square tube (301), and a circular plate (309) is fixedly connected to one end of the screw rod (308).

2. The variable diameter traction wheel according to claim 1, characterized in that: The number of the connection blocks (303) is eight, and each of the connection blocks (303) is provided with two threaded holes (304).

3. The variable diameter traction wheel according to claim 2, characterized in that: Each of the connection blocks (303) is provided with two bolts (4).

4. The variable diameter traction wheel according to claim 1, characterized in that: A bolt (4) is fitted in the threaded hole (304), and a tension spring (5) is hung on the bolt (4).

5. The variable diameter traction wheel according to claim 4, characterized in that: The number of the tension springs (5) is sixteen, and the two ends of each tension spring (5) are respectively arranged on the bolts (4) on two adjacent connection blocks (303).

6. The variable diameter traction wheel according to claim 1, characterized in that: The end of the screw rod (308) overlaps the outer surface of the slider (302).

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