High-strength light-weight variable-diameter belt pulley

Abstract

The utility model belongs to the technical field of variable-diameter belt pulleys, and particularly relates to a high-strength light-weight variable-diameter belt pulley which comprises a belt pulley body, a limiting device is arranged outside the belt pulley body, and the limiting device comprises a rotating rod, a limiting plate, a swing plate and a sliding insertion plate. According to the high-strength light-weight variable-diameter belt pulley, when the diameter of the belt pulley is changed, the belt pulley does not need to be replaced, only the position of a belt on the belt pulley needs to be replaced, the belt is clamped between a limiting plate and the belt pulley, the disassembly and assembly time is saved, and when the limiting plate is limited, the position of a rotating rod is limited through a limiting screw rod; the clamping blocks are inserted between the belt wheel body and the sliding insertion plate, the position of the sliding insertion plate is kept stable, the threaded rod is clamped between the clamping blocks, the positions of the clamping blocks are kept stable, the sliding insertion plate is inserted into the clamping groove of the swing plate, the swing plate cannot swing, then the rotating rod cannot rotate, and the position of the limiting plate is kept stable.

Description

Technical Field

[0001] The utility model relates to the technical field of variable diameter pulleys, in particular to a high-strength and lightweight variable diameter pulley. Background Art

[0002] For example, in a variable diameter pulley (application number: 202121977849.6) disclosed on the Chinese Patent Network, in order to solve the problem in the prior art that the original pulley needs to be removed when replacing pulleys of different diameters, a guide cylinder and a working cylinder are arranged on the original pulley. The working cylinder is removed from the pulley by rotating the guide cylinder, and then a working cylinder of a different size is replaced, which saves the trouble of removing the entire pulley. However, the working cylinder still needs to be disassembled and assembled in the process, which takes a certain amount of time. Utility Model Content

[0003] Based on the technical problem that it takes a long time to replace the existing variable diameter pulley, the utility model proposes a high-strength and lightweight variable diameter pulley.

[0004] The utility model proposes a high-strength and lightweight variable-diameter pulley, comprising a pulley body, a limiting device being arranged on the outside of the pulley body, the limiting device comprising a rotating rod, a limiting plate, a swinging plate and a sliding plug plate, the rotating rod drives the limiting plate and the swinging plate to swing when rotating, and the sliding plug plate is inserted into the swinging plate to prevent the rotating rod from rotating.

[0005] Preferably, a circular hole is opened on the left side surface of the pulley body, and the six circular holes are distributed in a circular array with the axis of the pulley body as the array center, the rotating rod is rotatably connected to the inside of the circular hole, and a circular groove is opened inside the rotating rod.

[0006] Through the above technical solution, the rotating rod rotates in the circular hole, three of the six circular holes are rotatably connected with the rotating rod, and there is a circular hole between the three circular holes.

[0007] Preferably, the internal thread of the pulley body is connected to a limiting screw, the limiting screw passes through the inside of the circular hole and is connected to the internal thread of the pulley body, the sliding plug plate is slidably inserted inside the pulley body, and the two sliding plug plates are horizontally symmetrically distributed with the axis of the rotating rod as the center of symmetry.

[0008] Through the above technical solution, the limiting screw passes through the interior of the rotating rod and is threadedly connected to the interior of the pulley body, which can ensure that the rotating rod is stably maintained outside the limiting screw.

[0009] Preferably, the limit plate is fixedly mounted on the outer surface of the rotating rod, a clamping block is slidably connected between the sliding plug plate and the pulley body, the internal thread of the clamping block is connected to a threaded rod, and the threaded rod passes through the clamping block and is connected to the internal thread of the pulley body.

[0010] Through the above technical solution, the clamping block is inserted between the pulley body and the sliding plug plate, so that the position of the sliding plug plate remains stable, and the threaded rod is clamped between the clamping blocks, so that the position of the clamping blocks remains stable.

[0011] Preferably, the swing plate is fixedly mounted on the outer surface of the rotating rod, a slot is provided inside the swing plate, the outer surface of the sliding plate is slidably connected to the inside of the slot, a slot is provided inside the pulley body, and the inside of the slot is slidably connected to the outer surface of the sliding plate.

[0012] Through the above technical solution, the sliding plug plate is inserted into the slot of the swing plate, so that the swing plate cannot swing, and the rotating rod cannot rotate, so that the position of the limit plate is stable.

[0013] Preferably, a spring is fixedly mounted on the outer surface of the sliding insert plate, the other end of the spring is fixedly connected to the inner wall of the slot, and a belt groove is provided on the outside of the pulley body.

[0014] Through the above technical solution, the spring pushes the sliding plate outward so that the sliding plate is inserted into the swing plate. The belt groove makes it easy for the belt to be stuck inside for transmission. When the pulley diameter is changed, there is no need to replace the pulley. Only the position of the belt on the pulley needs to be changed and the belt needs to be stuck between the limit plate and the pulley, which saves disassembly and assembly time.

[0015] The beneficial effects of the present invention are:

[0016] By setting a limit device, there is no need to replace the pulley when changing the diameter of the pulley. It is only necessary to change the position of the belt on the pulley and clamp the belt between the limit plate and the pulley, which saves disassembly and assembly time. When limiting the limit plate, the limit screw is passed through the inside of the rotating rod and connected with the internal thread of the pulley body, so that the rotating rod is stably maintained outside the limit screw, and the clamping block is inserted between the pulley body and the sliding plug plate to keep the position of the sliding plug plate stable. The threaded rod is clamped between the clamping block to keep the position of the clamping block stable. The sliding plug plate is inserted into the clamping groove of the swing plate to prevent the swing plate from swinging, thereby preventing the rotating rod from rotating, and making the position of the limit plate stable, thereby achieving the effect of preventing the pulley from consuming a lot of time when replacing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a high-strength and lightweight variable-diameter pulley proposed by the utility model;

[0018] Figure 2 This is a three-dimensional diagram of the pulley body structure of a high-strength and lightweight variable-diameter pulley proposed by the utility model;

[0019] Figure 3 This is a cross-sectional view of the pulley body structure of a high-strength, lightweight, variable-diameter pulley proposed by the utility model;

[0020] Figure 4 This is a three-dimensional diagram of the limit plate structure of a high-strength and lightweight variable-diameter pulley proposed by the utility model;

[0021] Figure 5 This is a three-dimensional diagram of a limiting screw structure of a high-strength and lightweight variable-diameter pulley proposed by the utility model.

[0022] In the figure: 1. Pulley body; 11. Round hole; 12. Limit screw; 13. Slot; 14. Belt groove; 2. Rotating rod; 21. Round groove; 3. Limit plate; 4. Swinging plate; 41. Slot; 5. Sliding plug plate; 51. Block; 52. Threaded rod; 53. 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-Figure 5 A high-strength and lightweight variable-diameter pulley comprises a pulley body 1. In order to facilitate the limiting of the belt outside the pulley, a limiting device is arranged outside the pulley body 1. The limiting device comprises a rotating rod 2, a limiting plate 3, a swinging plate 4 and a sliding plug plate 5. When the rotating rod 2 rotates, the limiting plate 3 and the swinging plate 4 are driven to swing. The sliding plug plate 5 is inserted into the swinging plate 4 to prevent the rotating rod 2 from rotating.

[0025] In order to facilitate the installation of the three rotating rods 2 in the three spaced-apart circular holes 11, a circular hole 11 is opened on the left surface of the pulley body 1, and the six circular holes 11 are distributed in a circular array with the axis of the pulley body 1 as the array center. The rotating rod 2 is rotatably connected to the inside of the circular hole 11, and a circular groove 21 is opened inside the rotating rod 2. The rotating rod 2 rotates in the circular hole 11. Three of the six circular holes 11 are rotatably connected to the rotating rod 2, and there is a circular hole 11 between the three circular holes 11.

[0026] In order to ensure that the rotating rod 2 is stably maintained outside the limit screw 12, the internal thread of the pulley body 1 is connected to the limit screw 12, the limit screw 12 passes through the inside of the circular hole 11 and is connected to the internal thread of the pulley body 1, the sliding plug plate 5 is slidably inserted into the inside of the pulley body 1, and the two sliding plug plates 5 are horizontally symmetrically distributed with the axis of the rotating rod 2 as the center of symmetry. The limit screw 12 passes through the inside of the rotating rod 2 and is connected to the internal thread of the pulley body 1, which can ensure that the rotating rod 2 is stably maintained outside the limit screw 12.

[0027] In order to ensure that the positions of the sliding plate 5 and the block 51 remain stable, the limit plate 3 is fixedly installed on the outer surface of the rotating rod 2, and a block 51 is slidably connected between the sliding plate 5 and the pulley body 1. The internal thread of the block 51 is connected to a threaded rod 52, and the threaded rod 52 passes through the block 51 and is connected to the internal thread of the pulley body 1. The block 51 is inserted between the pulley body 1 and the sliding plate 5 to keep the position of the sliding plate 5 stable, and the threaded rod 52 is stuck between the block 51 to keep the position of the block 51 stable.

[0028] In order to ensure that the rotating rod 2 does not rotate, the swing plate 4 is fixedly installed on the outer surface of the rotating rod 2, a slot 41 is opened inside the swing plate 4, the outer surface of the sliding plug plate 5 is slidably connected with the inside of the slot 41, and a slot 13 is opened inside the pulley body 1, and the inside of the slot 13 is slidably connected with the outer surface of the sliding plug plate 5. The sliding plug plate 5 is inserted in the slot 41 of the swing plate 4, so that the swing plate 4 cannot swing, and then the rotating rod 2 cannot rotate, so that the position of the limit plate 3 is stable.

[0029] In order to save time in replacing the pulley, a spring 53 is fixedly installed on the outer surface of the sliding plug plate 5, and the other end of the spring 53 is fixedly connected to the inner wall of the slot 13. A belt groove 14 is opened on the outside of the pulley body 1. The spring 53 pushes the sliding plug plate 5 outward so that the sliding plug plate 5 is inserted into the swing plate 4. The belt groove 14 makes it easy for the belt to be stuck inside for transmission. When changing the diameter of the pulley, there is no need to replace the pulley. You only need to change the position of the belt on the pulley and stick the belt between the limit plate 3 and the pulley, which saves disassembly and assembly time.

[0030] When the pulley diameter is changed, it is not necessary to replace the pulley, but only necessary to replace the position of the belt on the pulley and clamp the belt between the limiting plate 3 and the pulley, thus saving the time for disassembly and assembly. When limiting the limiting plate 3, the limiting screw 12 is passed through the inside of the rotating rod 2 and connected with the internal thread of the pulley body 1, so that the rotating rod 2 is stably maintained outside the limiting screw 12, and the clamping block 51 is inserted between the pulley body 1 and the sliding plug plate 5 to keep the position of the sliding plug plate 5 stable. The threaded rod 52 is clamped between the clamping block 51 to keep the position of the clamping block 51 stable. The sliding plug plate 5 is inserted into the clamping groove 41 of the swing plate 4, so that the swing plate 4 cannot swing, and then the rotating rod 2 cannot rotate, so that the position of the limiting plate 3 is stable, thereby achieving the effect of preventing the pulley from consuming a lot of time when replacing.

[0031] Working principle: when changing the pulley diameter, there is no need to replace the pulley, but only need to change the position of the belt on the pulley, and clamp the belt between the limit plate 3 and the pulley, which saves the time of disassembly and assembly. When limiting the limit plate 3, the limit screw 12 is passed through the inside of the rotating rod 2 and connected with the internal thread of the pulley body 1, so that the rotating rod 2 is stably maintained outside the limit screw 12, and the block 51 is inserted between the pulley body 1 and the sliding plug plate 5 to keep the position of the sliding plug plate 5 stable. The threaded rod 52 is clamped between the block 51 to keep the position of the block 51 stable. The sliding plug plate 5 is inserted into the slot 41 of the swing plate 4, so that the swing plate 4 cannot swing, and then the rotating rod 2 cannot rotate, so that the position of the limit plate 3 is stable.

[0032] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A high-strength and lightweight variable diameter pulley, comprising a pulley body (1), characterized in that: A limiting device is arranged outside the pulley body (1), and the limiting device comprises a rotating rod (2), a limiting plate (3), a swinging plate (4) and a sliding plug plate (5). When the rotating rod (2) rotates, the limiting plate (3) and the swinging plate (4) are driven to swing, and the sliding plug plate (5) is inserted into the swinging plate (4) so ​​that the rotating rod (2) cannot rotate.

2. The high-strength and lightweight variable diameter pulley according to claim 1, characterized in that: A circular hole (11) is provided on the left side surface of the pulley body (1), and six circular holes (11) are distributed in a circular array with the axis of the pulley body (1) as the array center. The rotating rod (2) is rotatably connected to the inside of the circular hole (11), and a circular groove (21) is provided inside the rotating rod (2).

3. The high-strength and lightweight variable diameter pulley according to claim 2, characterized in that: The internal thread of the pulley body (1) is connected to a limiting screw (12), and the limiting screw (12) passes through the inside of the circular hole (11) and is connected to the internal thread of the pulley body (1). The sliding plug plate (5) is slidably inserted into the inside of the pulley body (1), and the two sliding plug plates (5) are horizontally symmetrically distributed with the axis of the rotating rod (2) as the symmetry center.

4. The high-strength and lightweight variable diameter pulley according to claim 1, characterized in that: The limit plate (3) is fixedly mounted on the outer surface of the rotating rod (2); a clamping block (51) is slidably connected between the sliding plug plate (5) and the pulley body (1); the internal thread of the clamping block (51) is connected to a threaded rod (52); the threaded rod (52) passes through the clamping block (51) and is connected to the internal thread of the pulley body (1).

5. The high-strength and lightweight variable diameter pulley according to claim 1, characterized in that: The swing plate (4) is fixedly mounted on the outer surface of the rotating rod (2); a slot (41) is provided inside the swing plate (4); the outer surface of the sliding plug plate (5) is slidably connected to the inside of the slot (41); a slot (13) is provided inside the pulley body (1); the inside of the slot (13) is slidably connected to the outer surface of the sliding plug plate (5).

6. The high-strength and lightweight variable diameter pulley according to claim 5, characterized in that: A spring (53) is fixedly mounted on the outer surface of the sliding plug plate (5), and the other end of the spring (53) is fixedly connected to the inner wall of the slot (13). A belt groove (14) is provided on the outside of the pulley body (1).

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