Variable-diameter belt pulley

Abstract

The utility model relates to the field of belt pulleys, and discloses a variable-diameter belt pulley which comprises a pulley body, an installation mechanism is arranged in the middle of the pulley body, the installation mechanism comprises a connecting assembly and a fixing assembly, the connecting assembly is located in the fixing assembly, and the connecting assembly comprises an installation cylinder. The outer wall of the mounting cylinder is fixedly connected with a plurality of positioning plates, the outer wall of the mounting cylinder is fixedly connected with a plurality of connecting rods, the fixing assembly comprises two control rings, a plurality of fixing rods are jointly and fixedly connected between the two control rings, and the fixing rods are fixedly connected between the two control rings. A control cylinder is arranged in the middle of the control ring located on the front portion, and the control cylinder is in threaded connection with the mounting cylinder. According to the belt pulley, the control cylinder and the control ring are matched with each other, and the control rod, the fixing block and the connecting rod are matched with each other, so that the installation of the belt pulley body is more convenient, quicker and more practical.

Description

Technical Field

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

[0002] A pulley is a crucial component in mechanical transmission systems, typically used to transmit power and motion. It consists of a circular wheel with a central hole that can be fixed to a shaft. The pulley, in conjunction with a belt, transfers power from one shaft to another through friction. Variable-diameter pulleys adjust the transmission ratio by varying the contact area between the belt and the pulley. Increasing the pulley's diameter reduces the output shaft's speed, while decreasing it increases it. This characteristic makes variable-diameter pulleys widely used in applications requiring speed and torque adjustment.

[0003] The cam is provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels.

[0004] Although the above device can replace the working cylinder to change the diameter of the pulley, it needs to loosen and tighten multiple bolts when replacing the working cylinder, resulting in low replacement efficiency and impracticality. Therefore, a variable diameter pulley is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above deficiencies, the present invention provides a variable diameter pulley, which aims to improve the problem in the prior art that when replacing the working cylinder, multiple bolts need to be loosened and tightened, resulting in low replacement efficiency and impracticality.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a variable diameter pulley, comprising a wheel body, a mounting mechanism is provided in the middle of the wheel body, the mounting mechanism comprises a connecting component and a fixing component, the connecting component is located inside the fixing component, the connecting component comprises a mounting cylinder, the outer wall of the mounting cylinder is fixedly connected to a positioning plate, and the number is multiple.

[0007] As a further description of the above technical solution:

[0008] The outer wall of the installation cylinder is fixedly connected with a plurality of connecting rods.

[0009] As a further description of the above technical solution:

[0010] The fixing assembly includes two control rings, and a plurality of fixing rods are fixedly connected between the two control rings. A control cylinder is provided in the middle of the control ring located at the front, and the control cylinder is threadedly connected to the mounting cylinder.

[0011] As a further description of the above technical solution:

[0012] The fixing assembly also includes a plurality of fixing parts, and the fixing parts include two fixing blocks, the two fixing blocks are respectively located on the front and rear sides of the connecting rod, and the sides of the two fixing blocks away from each other are fixedly connected to the control rod.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the control cylinder is fixedly connected with a plurality of control blocks.

[0015] As a further description of the above technical solution:

[0016] The control ring is provided with a plurality of control openings, and the control rod is slidably connected thereto. The inner wall of the control ring at the front is provided with a plurality of connection openings, and the control block is movably connected thereto.

[0017] As a further description of the above technical solution:

[0018] A sliding groove is provided on one side of the fixing block close to the connecting rod, and the connecting rod is slidably connected to the sliding groove.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the control rod is fixedly connected to two limiting rings.

[0021] As a further description of the above technical solution:

[0022] The inner wall of the wheel body is provided with a plurality of positioning grooves, and the positioning plate is movably connected to the positioning grooves. The inner wall of the wheel body is provided with a plurality of fixing grooves, and the fixing block is movably connected to the fixing grooves.

[0023] The utility model has the following beneficial effects:

[0024] 1. In the present invention, by arranging the mutual cooperation between the control cylinder and the control ring, and by arranging the mutual cooperation between the control rod, the fixing block and the connecting rod, the installation of the pulley body is made more convenient, quick and practical.

[0025] 2. In the present invention, by arranging the mutual cooperation between the wheel body and the connecting assembly, and by arranging the mutual cooperation between the positioning plate and the positioning groove, the installation mechanism can quickly position the wheel body, so that the fixing block of the fixing assembly can be more accurately inserted into the fixing groove, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a variable diameter pulley proposed by the utility model;

[0027] Figure 2 This is a schematic diagram of the disassembled three-dimensional structure of the wheel body and the mounting mechanism of a variable diameter pulley proposed in the present invention;

[0028] Figure 3 This is a schematic diagram of the cross-sectional three-dimensional structure of a mounting mechanism for a variable diameter pulley proposed in the present invention;

[0029] Figure 4 This is a schematic diagram of the disassembled three-dimensional structure of the installation mechanism of a variable diameter pulley proposed in the utility model;

[0030] Figure 5 This is an enlarged three-dimensional structural diagram of point A of a variable diameter pulley proposed by the present invention.

[0031] Legend:

[0032] 1. Wheel body; 2. Connecting assembly; 3. Fixing assembly; 21. Mounting cylinder; 22. Positioning plate; 23. Connecting rod; 31. Control ring; 32. Control cylinder; 33. Control rod; 34. Fixing block; 35. Fixing rod; 321. Control block; 311. Control port; 312. Connecting port; 341. Slide groove; 331. Limiting ring; 11. Positioning groove; 12. Fixing groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Reference Figure 1 - Figure 2The utility model provides an embodiment: a variable diameter pulley, including a wheel body 1, which is used to connect a belt. The pulley can replace the wheel body 1 with different diameters according to actual needs. A mounting mechanism is provided in the middle of the wheel body 1 for cooperating with the installation of the wheel body 1. The mounting mechanism includes a connecting component 2 and a fixing component 3. The connecting component 2 is located inside the fixing component 3. The connecting component 2 is used to cooperate with the connecting shaft so that the pulley can be connected to the device. The fixing component 3 is used to fix the wheel body 1.

[0035] Furthermore, the inner wall of the wheel body 1 is provided with a plurality of positioning grooves 11 for cooperating with the positioning of the positioning plate 22, and the positioning plate 22 is movably connected thereto. The inner wall of the wheel body 1 is provided with a plurality of fixing grooves 12 for cooperating with the connecting fixing block 34, and the fixing block 34 is movably connected thereto.

[0036] like Figure 3 - Figure 5 As shown, the connecting assembly 2 includes a mounting cylinder 21, which is used to connect to the rotating shaft and to connect various components. The outer wall of the mounting cylinder 21 is fixedly connected to a plurality of positioning plates 22, which are used to assist in positioning the wheel body 1 so that the fixing block 34 can be accurately inserted into the fixing groove 12, and at the same time, the connection stability between the mounting mechanism and the wheel body 1 can be enhanced. The outer wall of the mounting cylinder 21 is fixedly connected to a plurality of connecting rods 23, which are used to cooperate with the connection of the fixing block 34.

[0037] Furthermore, the fixing assembly 3 includes two control rings 31, which are used to control the movement of multiple fixing blocks 34 to cooperate with the connection between the fixing assembly 3 and the wheel body 1. The control ring 31 located at the front side is movably connected to the control cylinder 32, and the control ring 31 located at the rear side is rotatably connected to the mounting cylinder 21. A fixing rod 35 is fixedly connected between the two control rings 31, and the number of the fixing rods 35 is multiple, which is used to cooperate with the connection of the two control rings 31. A control cylinder 32 is provided in the middle of the control ring 31 located at the front, which is used to drive the control ring 31 to rotate. The control cylinder 32 is threadedly connected to the mounting cylinder 21 to cooperate with the adjustment of the control ring 31, which can fix the control ring 31. The fixing assembly 3 also includes multiple fixing parts, which include two fixing blocks 34, which are used to fix the connection between the fixing assembly 3 and the wheel body 1. The two fixing blocks 34 are respectively located on the front and rear sides of the connecting rod 23. The two fixing blocks 34 are fixedly connected to the sides away from each other with a control rod 33, which is used to cooperate with the connection between the fixing blocks 34 and the control ring 31.

[0038] Furthermore, the outer wall of the control cylinder 32 is fixedly connected with a plurality of control blocks 321, which are used to cooperate with the control cylinder 32 to drive the control ring 31 to rotate. The control ring 31 is provided with a plurality of control openings 311, which are arc-shaped openings, used to cooperate with and drive the control rod 33 to move, and the control rod 33 is slidably connected with it. The inner wall of the control ring 31 located at the front is provided with a plurality of connection openings 312 to cooperate with the connection of the control block 321, and the control block 321 is movably connected with it. The fixed block 34 is provided with a sliding groove 341 on the side close to the connecting rod 23, which is used to cooperate with the connection between the fixed block 34 and the connecting rod 23, and the connecting rod 23 is slidably connected to the sliding groove 341. The outer wall of the control rod 33 is fixedly connected with a limit ring 331, and the two limit rings 331 are respectively located on the front and rear sides of the control ring 31.

[0039] Working principle: When the wheel body 1 needs to be replaced, the control cylinder 32 is rotated to pass through the control block 321, driving the control ring 31 to rotate. When the control ring 31 rotates, the control port 311 opened therein will change its position, which will drive the control rod 33 connected thereto to move. Since one end of the control rod 33 is connected to the fixed block 34, and the fixed block 34 is slidably connected to the connecting rod 23, when the control rod 33 moves, it will drive the fixed block 34 to move toward the installation cylinder 21. When multiple fixed blocks 34 move toward the installation cylinder 21 and exit the fixed groove 12, the wheel body 1 can be removed from the installation mechanism, so that the fixed block 34 can be removed from the installation mechanism. The positioning plate 22 is withdrawn from the positioning groove 11, and then the positioning groove 11 on the new wheel body 1 is aligned with the positioning plate 22 on the connecting assembly 2, and the wheel body 1 is pressed toward the mounting mechanism so that the positioning plate 22 is stuck in the positioning groove 11, and then the control cylinder 32 is rotated in the opposite direction, which will drive the control ring 31 to rotate in the opposite direction again, and the control port 311 will drive the control rod 33 to reset, and the control rod 33 will drive the fixing block 34 to move toward the fixing groove 12 until it is stuck in the fixing groove 12, and then the rotation of the control cylinder 32 can be stopped. Since the control cylinder 32 is threadedly connected to the mounting cylinder 21, it will fix the control ring 31, thereby fixing the mounting mechanism and the wheel body 1.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A variable diameter pulley, comprising a pulley body (1), characterized in that: A mounting mechanism is provided in the middle of the wheel body (1), the mounting mechanism comprising a connecting assembly (2) and a fixing assembly (3), the connecting assembly (2) being located inside the fixing assembly (3), the connecting assembly (2) comprising a mounting cylinder (21), the outer wall of the mounting cylinder (21) being fixedly connected to a plurality of positioning plates (22).

2. The variable diameter pulley according to claim 1, characterized in that: The outer wall of the installation cylinder (21) is fixedly connected with a plurality of connecting rods (23).

3. The variable diameter pulley according to claim 2, characterized in that: The fixing assembly (3) includes two control rings (31), a plurality of fixing rods (35) are fixedly connected between the two control rings (31), a control cylinder (32) is provided in the middle of the control ring (31) located at the front, and the control cylinder (32) is threadedly connected to the mounting cylinder (21).

4. The variable diameter pulley according to claim 3, characterized in that: The fixing assembly (3) further comprises a plurality of fixing members, wherein the fixing members comprise two fixing blocks (34), the two fixing blocks (34) being respectively located at the front and rear sides of the connecting rod (23), and the two fixing blocks (34) are fixedly connected to the control rod (33) on the sides away from each other.

5. The variable diameter pulley according to claim 4, characterized in that: The outer wall of the control cylinder (32) is fixedly connected with a plurality of control blocks (321).

6. The variable diameter pulley according to claim 5, characterized in that: The control ring (31) is provided with a plurality of control openings (311), to which the control rod (33) is slidably connected; the inner wall of the control ring (31) located at the front is provided with a plurality of connection openings (312), to which the control block (321) is movably connected.

7. The variable diameter pulley according to claim 4, characterized in that: A sliding groove (341) is provided on one side of the fixing block (34) close to the connecting rod (23), and the connecting rod (23) is slidably connected to the sliding groove (341).

8. The variable diameter pulley according to claim 4, characterized in that: The outer wall of the control rod (33) is fixedly connected to two limiting rings (331).

9. The variable diameter pulley according to claim 4, characterized in that: The inner wall of the wheel body (1) is provided with a plurality of positioning grooves (11), to which the positioning plate (22) is movably connected; the inner wall of the wheel body (1) is provided with a plurality of fixing grooves (12), to which the fixing block (34) is movably connected.

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