Belt drive wheel

Abstract

The utility model relates to transmission wheel technical field, and disclose a kind of belt transmission wheel, including rotating member, rotating member includes shaft sleeve, and the transmission member of shaft sleeve upper sleeve, two ring bodies are sleeved on the shaft sleeve, two ring bodies are located transmission member both sides, transmission member and ring body cooperation are installed in pulley, and the two ports of pulley are all installed with limit ring, and limit ring is positioned to ring body.The utility model when transmission member wear needs overhauling or replacement, only need to unload limit ring, whole rotating member module can be taken out from pulley completely to maintain or replace, without disassembling other components on pulley or driving shaft, maintenance cost is low, and efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of transmission wheel technology, specifically a belt-driven wheel. Background Technology

[0002] Belt pulleys (or belt drives) are fundamental components widely used in mechanical transmission systems. They transmit power and motion through the friction between the belt and the pulley groove. In traditional structures, pulleys are usually mounted as a single unit, directly fixed to the drive shaft or driven shaft using keyways, set screws, or interference fits.

[0003] However, in specific applications, especially in transmission systems requiring variable torque, buffering capabilities, or ease of maintenance, more complex pulley structures have emerged. For example, a common improvement is the use of a centrifugal drive structure, where radially movable friction blocks or rollers are placed between the drive shaft and the pulley body. As the rotational speed increases, these moving parts move outward under centrifugal force, pressing against the inner wall of the pulley to achieve power transmission. This design enables soft-start, overload protection, or a degree of continuously variable transmission (CVT).

[0004] However, existing improved belt drive pulleys of this type still have significant shortcomings in terms of structural design and maintenance: Most of these pulleys are designed as an integral, undivisible functional unit. Once the core internal transmission component fails, the entire expensive pulley assembly often needs to be replaced, resulting in a waste of resources.

[0005] Therefore, there is an urgent need for a new type of belt drive pulley structure that can retain the advantages of advanced transmission methods such as centrifugal transmission, while fundamentally solving the pain points of difficult assembly, inconvenient maintenance, and poor maintainability, and realizing the modularization, rapid disassembly and assembly, and convenient replacement of core transmission components. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a belt drive wheel, including a rotating component, the rotating component including a bushing and a transmission component sleeved on the bushing, the bushing having two rings sleeved on the bushing, the two rings being located on both sides of the transmission component, the transmission component and the rings being fitted together and installed in the pulley, and a limit ring being installed in each of the two ports of the pulley, the limit ring limiting the rings.

[0007] Furthermore, an end cap is installed at one end of the pulley; The end cap has a retaining tooth on the side near the bushing.

[0008] Furthermore, the transmission component includes a mounting and a sliding assembly mounted within the mounting base, and a sleeve is fitted onto the opening of the mounting base; The rotating mounting base causes the sliding assembly to move away from the axis of the mounting base.

[0009] Furthermore, the mounting base includes a ring seat and two retaining rings; Both the ring seat and the retaining ring are fixed on the outside of the bushing, and the two retaining rings are located on the outside of the ring seat. The ring seat has several annularly distributed grooves, and the openings of the grooves are located on the outer surface of the ring seat.

[0010] Furthermore, the bottom surface of the groove is a stepped surface; Each of the aforementioned slots is equipped with a sliding component.

[0011] Furthermore, the sliding assembly includes a spring, one end of which is mounted on a seat, and the other end of the seat contacts a steel column.

[0012] This utility model has the following beneficial effects: When the transmission components need to be repaired or replaced due to wear, this utility model only requires removing the limit ring to completely remove the entire rotating component module from the pulley for maintenance or replacement. There is no need to disassemble the pulley or other components on the drive shaft, resulting in low maintenance costs and high efficiency.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall exploded structure of this utility model; Figure 3 This is a schematic diagram of the exploded structure of the ring body of this utility model; Figure 4 This is a schematic diagram of the exploded structure of the rotating component of this utility model; Figure 5 This is an exploded view of the mounting bracket of this utility model; Figure 6 This is a schematic diagram of the mounting base structure of this utility model; Figure 7 This is a schematic diagram of the ring seat structure of this utility model; Figure 8 This is a schematic diagram of the sliding component structure of this utility model; Figure 9 This is a schematic diagram of the side structure of the present invention. Figure 1 ; Figure 10 This utility model Figure 9 A schematic diagram of the AA cross-section; Figure 11 This utility model Figure 10 Enlarged view of point C; Figure 12 This is a side view of the present invention. Figure 2 ; Figure 13 This utility model Figure 12 BB cross-sectional diagram; The attached diagram lists the components represented by each number as follows: In the figure: 1. Rotating component; 101. Bushing; 1011. Clamping tooth; 102. Ring seat; 1021. Groove; 1022. Stepped surface; 103. Retaining ring; 104. Sleeve body; 105. Spring; 106. Seat body; 107. Steel column; 2. Ring body; 3. Pulley; 4. Limiting ring; 5. End cover. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-13 As shown, this utility model is a belt drive wheel, which mainly includes a rotating part 1, a ring body 2, a pulley 3 and a limiting ring 4.

[0018] The rotating component 1 is the core component of the transmission, and it includes a bushing 101. The bushing 101 is used to connect with the drive shaft, and it may be provided with a retaining tooth 1011 or other type of keyway to ensure synchronous rotation with the drive shaft. A transmission component is sleeved on the outside of the bushing 101, which is used to transmit torque to the pulley 3.

[0019] Crucially, a ring body 2 is fitted on both sides of the bushing 101 and the transmission component. These two ring bodies 2 can be made of wear-resistant materials, such as bronze or engineering plastics. The transmission component and the ring bodies 2 on both sides are installed as a single unit within the internal cavity of a cylindrical pulley 3.

[0020] To achieve axial positioning, a limiting ring 4 is installed on the inner side of each of the two ports of the pulley 3. These two limiting rings 4 can be snap rings, retaining rings, or ring-shaped components fixed by threaded connections. They limit the ring body 2 from both sides inward, thereby axially locking the entire rotating component 1 assembly within the pulley 3, preventing axial movement during operation, while allowing the rotating component 1 to rotate freely relative to the pulley 3.

[0021] As an optimization of Embodiment 1, such as Figure 2 As shown, an end cap 5 can also be installed at one end of the pulley 3. The end cap 5 can be fixed to the end face of the pulley 3 by bolts or clips, serving both dustproof and aesthetic purposes.

[0022] More specifically, the end cap 5 should be installed on the side near the bushing 101 where the retaining teeth 1011 are provided. This arrangement facilitates the insertion of the drive shaft from this side and engagement with the retaining teeth 1011, while the end cap 5 can provide some protection for the end of the bushing and the connection between the drive shaft and the bushing.

[0023] The transmission component can employ a centrifugal sliding assembly to achieve continuously variable transmission or a smoother torque transmission. Specifically, the transmission component includes a mounting base and multiple sliding assemblies mounted within the mounting base. An opening is provided on the outer side of the mounting base, and a sleeve 104 is fitted onto the opening.

[0024] Its working principle is as follows: When the rotating part 1 is driven to rotate at high speed, the mounting base rotates accordingly. Under the action of centrifugal force, the sliding component inside it moves away from the axis of the mounting base (i.e., the axis of the bushing 101), thereby pressing against the inner wall of the sleeve 104. This achieves the outer surface of the sleeve 104 being pressed against the inner wall of the pulley 3, and the pulley 3 is driven to rotate through friction. The higher the rotation speed, the greater the centrifugal force, the greater the clamping force, and the correspondingly greater the transmitted torque.

[0025] like Figures 4-5 As shown, a preferred structure of the mounting base includes a ring seat 102 and two retaining rings 103.

[0026] The ring seat 102 and the two retaining rings 103 are fixed (e.g., by welding, integral molding or key connection) to the outer circumferential surface of the bushing 101. The two retaining rings 103 are located on both sides of the ring seat 102, forming an axial limiting space together with the ring seat 102.

[0027] On the outer circumferential surface of the ring seat 102, a plurality of grooves 1021 are evenly distributed in the circumferential direction. The openings of these grooves 1021 face radially outward and are used to accommodate the sliding assembly.

[0028] Furthermore, such as Figure 11 As shown in the enlarged view, the bottom surface of the groove 1021 is designed as a stepped surface. This design can create installation areas of different depths; for example, a shallower area is used to place the return spring, and a deeper area is used to limit the initial position of the sliding component.

[0029] Each of the grooves 1021 is independently equipped with a sliding assembly.

[0030] Each sliding assembly includes a spring 105, a seat 106, and a steel column 107.

[0031] One end of the spring 105 abuts against the inner surface of the groove 1021, while the other end pushes against one end of the seat 106. The seat 106 can be a slider or a roller seat, and its other end (radially outer end) contacts a steel column 107. In the initial state (low speed or stationary), the elastic force of the spring 105 keeps the seat 106 and the steel column 107 in a retracted position close to the axis. When rotating at high speed, centrifugal force overcomes the elastic force of the spring 105, pushing the seat 106 and the steel column 107 to a shallower area, thereby realizing the radial outward movement of the steel column 107. Finally, the steel column 107 is pressed against the inner wall of the pulley 3 by the sleeve 104, realizing friction transmission. The steel column 107 can use rolling or sliding contact to reduce wear.

[0032] Working principle: During assembly, the two rings 2 are first fitted onto the bushing 101 and placed on both sides of the transmission component. Then, the entire assembly is placed into the inner cavity of the pulley 3, and finally, the limiting rings 4 are installed from both ends to complete axial fixation. During operation, the drive shaft drives the bushing 101 and the entire rotating component 1 to rotate. Centrifugal force causes the steel column 107 in the sliding assembly to extend radially, contacting the inner wall of the pulley 3 and generating friction, thereby driving the pulley 3 to rotate. The rings 2 on both sides have a small gap or lubricated contact with the inner wall of the pulley 3, mainly serving as auxiliary support and centering to ensure smooth rotation. The limiting rings 4 ensure that the assembly will not separate axially during the entire transmission process.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A belt-driven pulley, comprising a rotating component (1), characterized in that: The rotating component (1) includes a bushing (101) and a transmission component sleeved on the bushing (101); Two rings (2) are fitted on the bushing (101), and the two rings (2) are located on both sides of the transmission component. The transmission component and the rings (2) are fitted together and installed in the pulley (3). Limiting rings (4) are installed in both ports of the pulley (3), and the limiting rings (4) limit the ring body (2).

2. The belt drive pulley according to claim 1, characterized in that: An end cap (5) is installed at one end of the pulley (3); The end cap (5) is located on the side near the bushing (101) with a retaining tooth (1011).

3. A belt-driven pulley according to claim 1, characterized in that: The transmission component includes a sliding assembly installed in the mounting base, and a sleeve (104) is fitted onto the opening of the mounting base. The rotating mounting base causes the sliding assembly to move away from the axis of the mounting base.

4. A belt drive pulley according to claim 3, characterized in that: The mounting base includes a ring seat (102) and two retaining rings (103); The ring seat (102) and the retaining ring (103) are both fixed on the outside of the bushing (101), and the two retaining rings (103) are located on the outside of the ring seat (102); The ring seat (102) is provided with a plurality of annularly distributed grooves (1021), the openings of which are located on the outer surface of the ring seat (102).

5. A belt-driven pulley according to claim 4, characterized in that: The bottom surface of the groove (1021) is a stepped surface; Each of the grooves (1021) is equipped with a sliding component.

6. A belt-driven pulley according to claim 5, characterized in that: The sliding assembly includes a spring (105) with one end of a seat (106) mounted on it, and the other end of the seat (106) in contact with a steel column (107).

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