Belt pulley reinforcing device

Abstract

The utility model discloses a belt pulley reinforcing device which comprises a belt pulley, a first through hole is formed in the middle of the belt pulley, a limiting groove is formed in the inner wall of the first through hole, a rotating shaft penetrates through the interior of the first through hole, a limiting block is fixed to the outer wall of the rotating shaft, and the limiting block is located in the limiting groove. Reinforcing blocks are fixedly welded to the outer wall of the rotating shaft, one side of each reinforcing block is attached to one side of the belt pulley, and a lead screw is fixed to one side of each reinforcing block. According to the belt pulley reinforcing device, through the four reinforcing blocks and the two first nuts, preliminary fixing between the belt pulley and the rotating shaft can be completed, and through the arrangement of a second through hole and the lead screw, the belt pulley and the rotating shaft can be fixed conveniently. And the four second through holes and the four lead screws are symmetrically distributed about the central axis of the rotating shaft, and through cooperation of second nuts on the lead screws and reinforcing blocks, four different positions between the belt pulley and the rotating shaft can be fixed, so that the belt pulley and the rotating shaft can be firmly fixed together.

Description

Technical Field

[0001] The utility model relates to the technical field of pulley fixing, in particular to a pulley reinforcement device. Background Art

[0002] Belt pulleys are mainly used for long-distance power transmission, such as the output of small diesel engine power, agricultural vehicles, tractors, automobiles, mining machinery, mechanical processing equipment, textile machinery, packaging machinery, lathes, forging machines, some small horsepower motorcycle power transmission, agricultural machinery power transmission, air compressors, reducers, reducers, generators, cotton ginning machines, etc. Belt pulleys are fixed to the rotating shaft.

[0003] However, the existing method of fixing the pulley and the rotating shaft is to install a nut at the end of the rotating shaft so that the pulley and the rotating shaft are fixed together, which leads to poor fixing effect between the two and the possibility of loosening.

[0004] In view of the above problems, it is urgent to carry out innovative design based on the original pulley reinforcement device. Utility Model Content

[0005] The purpose of the utility model is to provide a pulley reinforcement device to solve the problems raised by the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pulley reinforcement device, comprising a pulley, a first through hole is opened in the middle of the pulley, a limiting groove is opened on the inner wall of the first through hole, a rotating shaft passes through the inside of the first through hole, a limiting block is fixed on the outer wall of the rotating shaft, the limiting block is located inside the limiting groove, a reinforcement block is welded and fixed to the outer wall of the rotating shaft, one side of the reinforcement block is in contact with one side of the pulley, a screw rod is fixed on one side of the reinforcement block, the end of the screw rod passes through the internal thread of the second through hole and a second nut is installed, the second through hole is opened inside the pulley, and the end of the rotating shaft is threadedly installed with the first nut.

[0007] Preferably, a first gasket is nested on the outer side of the rotating shaft, the first gasket is located between the pulley and the first nut, and the sides of the first gasket are in contact with the sides of the pulley and the sides of the first nut.

[0008] Preferably, a second gasket is nested on the outer side of the screw rod, the second gasket is located between the pulley and the second nut, and the sides of the second gasket are in contact with the sides of the pulley and the sides of the second nut.

[0009] Preferably, the outer wall of the rotating shaft fits with the inner wall of the first through hole, the inner wall of the limiting groove fits with the outer wall of the limiting block, and there are four limiting grooves and four limiting blocks distributed at equal angles with respect to the central axis of the rotating shaft, and the limiting block is snap-connected with the limiting groove.

[0010] Preferably, there are four reinforcing blocks, four second through holes and four screw rods that are equally distributed with respect to the central axis of the rotating shaft, and the screw rod and the second through hole form a sliding connection.

[0011] Preferably, two second nuts are provided on the screw rod.

[0012] Preferably, two first nuts are provided on the rotating shaft.

[0013] Compared with the prior art, the beneficial effect of the utility model is that the pulley reinforcement device can complete the preliminary fixation between the pulley and the rotating shaft through four reinforcement blocks and two first nuts, and is provided with a second through hole and a screw rod, and four second through holes and screw rods are symmetrically distributed about the central axis of the rotating shaft. The cooperation of the second nut on the screw rod and the reinforcement block can complete the fixation of the pulley and the rotating shaft at four different positions, so that the pulley and the rotating shaft can be firmly fixed together. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the external structure of the utility model from a side view;

[0016] Figure 3 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0017] Figure 4 It is a side view distribution structure diagram of the reinforcing block and the limiting block of the utility model.

[0018] In the figure: 1, pulley; 2, first through hole; 3, limiting groove; 4, rotating shaft; 5, limiting block; 6, reinforcing block; 7, first nut; 8, first gasket; 9, second through hole; 10, screw rod; 11, second nut; 12, second gasket. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 according to specific circumstances.

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a technical solution: a pulley reinforcement device, including a pulley 1, a first through hole 2 is opened in the middle of the pulley 1, a limiting groove 3 is opened on the inner wall of the first through hole 2, a rotating shaft 4 is passed through the inside of the first through hole 2, a limiting block 5 is fixed on the outer wall of the rotating shaft 4, the limiting block 5 is located inside the limiting groove 3, a reinforcing block 6 is welded and fixed on the outer wall of the rotating shaft 4, one side of the reinforcing block 6 is in contact with one side of the pulley 1, a screw rod 10 is fixed on one side of the reinforcing block 6, the end of the screw rod 10 passes through the inner thread of the second through hole 9 and is installed with a first Two nuts 11, a second through hole 9 is opened inside the pulley 1, a first nut 7 is threadedly installed on the end of the rotating shaft 4, a first gasket 8 is nested on the outside of the rotating shaft 4, the first gasket 8 is located between the pulley 1 and the first nut 7, and the sides of the first gasket 8 are in contact with the sides of the pulley 1 and the sides of the first nut 7, a second gasket 12 is nested on the outside of the screw rod 10, the second gasket 12 is located between the pulley 1 and the second nut 11, and the sides of the second gasket 12 are in contact with the sides of the pulley 1 and the sides of the second nut 11.

[0024] The outer wall of the rotating shaft 4 fits with the inner wall of the first through hole 2, so that the rotating shaft 4 can move inside the first through hole 2, and the inner wall of the limiting groove 3 fits with the outer wall of the limiting block 5. The limiting groove 3 and the limiting block 5 both have four equiangular distributions about the central axis of the rotating shaft 4. The limiting block 5 is engaged with the limiting groove 3, so that the limiting block 5 can move inside the limiting groove 3, and when the rotating shaft 4 rotates, the rotating shaft 4 drives the pulley 1 to rotate through the engagement of the limiting block 5 with the limiting groove 3.

[0025] There are four reinforcing blocks 6, four second through holes 9 and four screw rods 10 distributed at equal angles about the central axis of the rotating shaft 4, and the screw rod 10 and the second through hole 9 form a sliding connection, so that the screw rod 10 can move inside the second through hole 9. With the cooperation of the four screw rods 10, the four second through holes 9, the four reinforcing blocks 6 and the second nut 11 on the screw rod 10, the pulley 1 can be stably fixed on the rotating shaft 4.

[0026] Two second nuts 11 are arranged on the screw rod 10 , which is beneficial for fixing the pulley 1 by the second nuts 11 .

[0027] Two first nuts 7 are arranged on the rotating shaft 4 , which is beneficial for fixing the pulley 1 by the first nuts 7 .

[0028] Working principle: When using the pulley reinforcement device, first, put the first through hole 2 on the pulley 1 on the rotating shaft 4, and at the same time, pass the screw rod 10 on the reinforcement block 6 through the inside of the second through hole 9, and then pass the limit block 5 on the rotating shaft 4 through the inside of the limit groove 3, so that one side of the pulley 1 and one side of the reinforcement block 6 fit each other, and then put the first gasket 8 on the rotating shaft 4, and then tighten the two first nuts 7 on the ends of the rotating shaft 4 respectively to complete the preliminary fixation between the pulley 1 and the rotating shaft 4, and finally install the second nuts 11 and the second gasket 12 at the ends of the four screw rods 10 respectively to complete the fixation of the pulley 1 and the rotating shaft 4 at four different positions, so that the pulley 1 and the rotating shaft 4 can be firmly fixed together.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pulley reinforcement device, comprising a pulley (1), characterized in that: A first through hole (2) is provided in the middle of the pulley (1), a limiting groove (3) is provided on the inner wall of the first through hole (2), a rotating shaft (4) passes through the interior of the first through hole (2), a limiting block (5) is fixed on the outer wall of the rotating shaft (4), the limiting block (5) is located inside the limiting groove (3), a reinforcing block (6) is welded and fixed on the outer wall of the rotating shaft (4), one side of the reinforcing block (6) is in contact with one side of the pulley (1), a screw rod (10) is fixed on one side of the reinforcing block (6), an end of the screw rod (10) passes through the inner thread of the second through hole (9) and is threadedly mounted with a second nut (11), the second through hole (9) is provided inside the pulley (1), and a first nut (7) is threadedly mounted on the end of the rotating shaft (4).

2. A pulley reinforcement device according to claim 1, characterized in that: A first gasket (8) is nested on the outer side of the rotating shaft (4), the first gasket (8) is located between the pulley (1) and the first nut (7), and the sides of the first gasket (8) are in contact with the sides of the pulley (1) and the sides of the first nut (7).

3. A pulley reinforcement device according to claim 1, characterized in that: A second gasket (12) is embedded on the outer side of the screw rod (10), and the second gasket (12) is located between the pulley (1) and the second nut (11), and the sides of the second gasket (12) are in contact with the sides of the pulley (1) and the sides of the second nut (11).

4. A pulley reinforcement device according to claim 1, characterized in that: The outer wall of the rotating shaft (4) and the inner wall of the first through hole (2) are in contact with each other, the inner wall of the limiting groove (3) and the outer wall of the limiting block (5) are in contact with each other, and the limiting groove (3) and the limiting block (5) are both provided with four limiting grooves (3) and four limiting blocks (5) which are distributed at equal angles with respect to the central axis of the rotating shaft (4), and the limiting block (5) is snap-fitted and connected with the limiting groove (3).

5. A pulley reinforcement device according to claim 1, characterized in that: The reinforcing block (6), the second through hole (9) and the screw rod (10) are all distributed at four equal angles with respect to the central axis of the rotating shaft (4), and the screw rod (10) and the second through hole (9) form a sliding connection.

6. A pulley reinforcement device according to claim 1, characterized in that: The screw rod (10) is provided with two second nuts (11).

7. A pulley reinforcement device according to claim 1, characterized in that: The rotating shaft (4) is provided with two first nuts (7).

Images