Belt pulley wear-resistant assembly with replaceable friction plate

Abstract

The utility model relates to a belt pulley wear-resistant assembly with a replaceable friction plate, which comprises a belt pulley body, a plurality of guide frames are annularly and uniformly distributed on one side of the belt pulley body, and a friction plate assembly is clamped on the inner sides of the plurality of guide frames. At the moment, the limiting rod is restrained by the limiting groove to gradually move inwards under the state that the auxiliary frame moves rightwards, so that the limiting rod is rapidly separated from the friction plate assembly, the friction plate assembly is conveniently and rapidly disassembled, and when a new friction plate assembly is replaced, the new friction plate assembly is clamped to the left side of the belt wheel body; then the tooth-shaped rotating handle is rotated to enable the threaded ring to be connected to the inner side of the belt wheel body in a threaded mode, at the moment, the movable ring, the connecting rod and the auxiliary frame move leftwards, the limiting rod is gradually ejected out under the constraint effect of the limiting groove under the state that the auxiliary frame moves leftwards, and therefore a new friction plate assembly is rapidly and effectively limited, and the disassembly and assembly efficiency of the friction plate assembly is improved.

Description

Technical Field

[0001] This utility model relates to the field of belt pulley technology, and in particular to a wear-resistant belt pulley component with replaceable friction plates. Background Technology

[0002] An automotive air conditioning electromagnetic clutch typically consists of three parts: a pulley assembly, a coil assembly, and a drive plate assembly. The pulley is always connected to the engine via a belt, while the drive plate is connected to the compressor. When the coil is energized, the pulley becomes magnetic, attracting the drive plate and allowing it to rotate with the pulley, thus driving the compressor. When the drive plate is attracted, it is in close contact with the pulley, relying on friction to drive its rotation. Wear during operation is directly applied to the side of the pulley, and the pulley needs to be replaced after long-term use.

[0003] Patent CN218817984U discloses a novel dustproof automotive air conditioning clutch pulley with a friction plate structure. The pulley includes a wheel body and a belt groove. The belt groove is located on the outer ring of the wheel body and is arranged in a circumferential manner. A ring plate is fixedly fixed around the front outer ring surface of the wheel body, and a brush is fixedly fixedly around the front surface of the inner ring of the ring plate. An annular groove is formed around the surface of the wheel body, and multiple screw holes are provided within the annular groove. A friction plate is fitted inside the annular groove. This invention, by fixing a ring plate around the front outer ring of the pulley and fixing a brush to its outer inner surface, can prevent external dust from entering and adhering to the contact surface, thus preventing excessive wear. Furthermore, when the friction plate is severely worn, it can be removed and replaced, thereby ensuring the service life of the pulley.

[0004] However, the aforementioned novel dustproof automotive air conditioning clutch pulley with a friction plate structure still has the following shortcomings:

[0005] The above-mentioned device fixes the friction plate and the pulley with several bolts. However, tightening these bolts is time-consuming and labor-intensive, which reduces the efficiency of disassembling and assembling the friction plate. Therefore, we propose a wear-resistant pulley component with replaceable friction plates. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a wear-resistant pulley component with replaceable friction plates. This solves the technical problem that the current device fixes the friction plates to the pulley with several bolts, but the tightening of these bolts is time-consuming and labor-intensive, which reduces the efficiency of disassembling and assembling the friction plates.

[0007] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: design a wear-resistant pulley assembly with replaceable friction plates, including a pulley body, a plurality of guide frames are evenly distributed in a ring on one side of the pulley body, a friction plate assembly is engaged inside the plurality of guide frames, and an auxiliary assembly is provided inside the pulley body;

[0008] The auxiliary component includes a threaded ring screwed into the inside of the pulley body. A toothed throttle is fixed on the surface of the threaded ring. A movable ring is attached to the side of the threaded ring away from the toothed throttle. Several connecting rods are evenly distributed in a ring on one side of the movable ring. An auxiliary frame is fixed to the end of the connecting rod away from the movable ring. Several limiting grooves are evenly opened on the surface of the auxiliary frame. A limiting rod is movably engaged inside the limiting groove. A T-shaped ring frame is fixed to the side of the movable ring away from the connecting rod.

[0009] Preferably, the movable ring is fixedly connected to the auxiliary frame via several connecting rods, and the connecting rods are movably inserted into the inner side of the pulley body.

[0010] Preferably, the auxiliary frame is in the shape of a hollow frustum, the outer diameter of the auxiliary frame gradually increases from left to right, the outer wall of the limiting rod is in contact with the wall of the limiting groove opened on the surface of the auxiliary frame, and the limiting rod is composed of a straight rod and a ball.

[0011] Preferably, the T-shaped ring frame is movably engaged inside the threaded ring, and the movable ring forms a rotating structure with the threaded ring through the T-shaped ring frame.

[0012] Preferably, the friction plate assembly includes a friction plate body, which is engaged with the inner side of several guide frames. A retaining ring is fixed on one side of the friction plate body, and several guide blocks are uniformly fixed in a ring shape on the outer side of the friction plate body.

[0013] Preferably, the friction plate body and the retaining ring are integrally formed, and an annular groove matching the retaining ring is opened inside one side of the pulley body. The friction plate body and the pulley body form an engaging structure through the retaining ring.

[0014] Preferably, the inner side of the retaining ring is provided with a retaining groove that matches the end of the limiting rod. When the limiting rod is located at the highest point inside the limiting groove, the end of the limiting rod is precisely engaged in the retaining groove inside the retaining ring.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model effectively drives the threaded ring to move outward by rotating the toothed handle, thereby driving the movable ring, connecting rod and auxiliary frame to move to the right. At this time, the limiting rod gradually moves inward under the constraint of the limiting groove while the auxiliary frame moves to the right, thereby quickly disengaging from the friction plate assembly, which facilitates the quick disassembly of the friction plate assembly. When replacing the new friction plate assembly, the new friction plate assembly is snapped onto the left side of the pulley body, and then the toothed handle is rotated to screw the threaded ring into the inner side of the pulley body. At this time, the movable ring, connecting rod and auxiliary frame move to the left, and the limiting rod gradually pushes out under the constraint of the limiting groove while the auxiliary frame moves to the left, thereby quickly and effectively limiting the new friction plate assembly and improving the disassembly and assembly efficiency of the friction plate assembly.

[0017] 2. In this utility model, the several slots on the inner side of the retaining ring are used to cooperate with several limiting rods to limit the friction plate body. The cooperation between the guide block and the guide frame facilitates the precise positioning of the friction plate body, so that the several limiting rods that are subsequently ejected can accurately enter the several slots on the inner side of the retaining ring one by one. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0020] Figure 3 This is a schematic diagram of the internal structure of the pulley body of this utility model;

[0021] Figure 4 This is a partial structural diagram of the present invention.

[0022] Figure 5 This is a schematic cross-sectional view of the auxiliary component of this utility model;

[0023] In the diagram: 1. Pulley body; 2. Guide frame; 3. Friction plate assembly; 4. Auxiliary components;

[0024] 301. Friction pad body; 302. Snap ring; 303. Guide block;

[0025] 401. Threaded ring; 402. Toothed throttle; 403. Moving ring; 404. Connecting rod; 405. Auxiliary frame; 406. Limiting groove; 407. Limiting rod; 408. T-shaped ring frame. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0027] A wear-resistant pulley assembly with replaceable friction plates, see [link to documentation]. Figures 1 to 5It includes a pulley body 1, a number of guide frames 2 are evenly distributed in a ring on one side of the pulley body 1, a friction plate assembly 3 is engaged inside the guide frames 2, and an auxiliary component 4 is provided inside the pulley body 1.

[0028] Auxiliary component 4 includes a threaded ring 401, which is screwed into the inside of the pulley body 1. A toothed handle 402 is fixed on the surface of the threaded ring 401. A movable ring 403 is attached to the side of the threaded ring 401 away from the toothed handle 402. A plurality of connecting rods 404 are evenly distributed in a ring on one side of the movable ring 403. An auxiliary frame 405 is fixed to the end of the connecting rod 404 away from the movable ring 403. The movable ring 403 is fixedly connected to the auxiliary frame 405 through the plurality of connecting rods 404. The connecting rods 404 are movably inserted into the inside of the pulley body 1. A plurality of limiting... The positioning groove 406 has a limiting rod 407 that is movably engaged inside it. Furthermore, the auxiliary frame 405 is in the shape of a hollow frustum, and the outer diameter of the auxiliary frame 405 gradually increases from left to right. The outer wall of the limiting rod 407 fits against the wall of the limiting groove 406 opened on the surface of the auxiliary frame 405. The limiting rod 407 is composed of a straight rod and a ball. A T-shaped ring frame 408 is fixedly connected to the side of the movable ring 403 away from the connecting rod 404. Furthermore, the T-shaped ring frame 408 is movably engaged inside the threaded ring 401. The movable ring 403 and the threaded ring 401 form a rotating structure through the T-shaped ring frame 408 and the threaded ring 401. This invention effectively drives the threaded ring 401 outward by rotating the toothed handle 402, thereby driving the movable ring 403, connecting rod 404, and auxiliary frame 405 to move to the right. At this time, the limiting rod 407, constrained by the limiting groove 406, gradually moves inward while the auxiliary frame 405 moves to the right, thus quickly disengaging from the friction plate assembly 3, facilitating the rapid disassembly of the friction plate assembly 3. When replacing the new friction plate assembly 3, the new friction plate assembly 3 is snapped onto the left side of the pulley body 1, and then the toothed handle 402 is rotated to screw the threaded ring 401 onto the inner side of the pulley body 1. At this time, the movable ring 403, connecting rod 404, and auxiliary frame 405 move to the left, and the limiting rod 407, constrained by the limiting groove 406, gradually pushes out while the auxiliary frame 405 moves to the left, thus quickly and effectively limiting the new friction plate assembly 3 and improving the disassembly and assembly efficiency of the friction plate assembly 3.

[0029] It is worth noting that the friction plate assembly 3 includes a friction plate body 301, which is engaged with the inner side of several guide frames 2. A retaining ring 302 is fixed on one side of the friction plate body 301. The friction plate body 301 and the retaining ring 302 are integrally formed. An annular groove matching the retaining ring 302 is opened inside one side of the pulley body 1. The friction plate body 301 and the pulley body 1 form an engaging structure through the retaining ring 302. Furthermore, a retaining groove matching the end of the limiting rod 407 is opened inside the retaining ring 302. When the limiting rod 407 is located at the highest point inside the limiting groove 406, the end of the limiting rod 407 is just engaged in the retaining groove inside the retaining ring 302. Several guide blocks 303 are uniformly fixed in an annular shape on the outside of the friction plate body 301. In this utility model, the several slots on the inner side of the retaining ring 302 are used to cooperate with several limiting rods 407 to limit the friction plate body 301. The cooperation between the guide block 303 and the guide frame 2 facilitates the precise positioning of the friction plate body 301, so that the several limiting rods 407 that are subsequently ejected can accurately enter the several slots on the inner side of the retaining ring 302.

[0030] Working principle: Rotating the toothed handle 402 drives the threaded ring 401 to move outward, thereby driving the movable ring 403, connecting rod 404, and auxiliary frame 405 to move to the right. At this time, the limiting rod 407, constrained by the limiting groove 406, gradually moves inward while the auxiliary frame 405 moves to the right, thus quickly disengaging from the friction plate assembly 3, facilitating the quick disassembly of the friction plate assembly 3. When replacing the new friction plate assembly 3, the new friction plate assembly 3 is snapped onto the left side of the pulley body 1. The cooperation between the guide block 303 and the guide frame 2 facilitates the adjustment of the friction plate body 301. 1. Precise positioning is performed so that the subsequent ejected limiting rods 407 can accurately enter the grooves inside the retaining ring 302. Then, the toothed throttle 402 is rotated so that the threaded ring 401 is screwed into the inner side of the pulley body 1. At this time, the movable ring 403, connecting rod 404 and auxiliary frame 405 move to the left. The limiting rods 407 are constrained by the limiting grooves 406 and gradually ejected under the leftward movement of the auxiliary frame 405. The end of the limiting rod 407 is locked into the groove inside the retaining ring 302, thereby quickly limiting the new friction plate assembly 3.

[0031] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A wear-resistant pulley assembly with replaceable friction plates, comprising a pulley body (1), characterized in that, The pulley body (1) has several guide frames (2) evenly distributed in a ring on one side, and friction plate assemblies (3) are engaged inside the several guide frames (2). The pulley body (1) is provided with auxiliary components (4). The auxiliary component (4) includes a threaded ring (401), which is screwed into the inside of the pulley body (1). A toothed throttle (402) is fixed on the surface of the threaded ring (401). A movable ring (403) is attached to the side of the threaded ring (401) away from the toothed throttle (402). A plurality of connecting rods (404) are evenly distributed in a ring on one side of the movable ring (403). An auxiliary frame (405) is fixed to one end of the connecting rod (404) away from the movable ring (403). A plurality of limiting grooves (406) are evenly opened on the surface of the auxiliary frame (405). A limiting rod (407) is movably engaged inside the limiting groove (406). A T-shaped ring frame (408) is fixed to the side of the movable ring (403) away from the connecting rod (404).

2. The wear-resistant assembly for a pulley with replaceable friction plates as described in claim 1, characterized in that, The movable ring (403) is fixedly connected to the auxiliary frame (405) through several connecting rods (404), and the connecting rods (404) are movably inserted into the inner side of the pulley body (1).

3. The wear-resistant pulley assembly with replaceable friction plates as described in claim 1, characterized in that, The auxiliary frame (405) is in the shape of a hollow frustum. The outer diameter of the auxiliary frame (405) gradually increases from left to right. The outer wall of the limiting rod (407) is in contact with the wall of the limiting groove (406) opened on the surface of the auxiliary frame (405). The limiting rod (407) is composed of a straight rod and a ball.

4. The wear-resistant pulley assembly with replaceable friction plates as described in claim 1, characterized in that, The T-shaped ring frame (408) is movably engaged inside the threaded ring (401), and the movable ring (403) forms a rotating structure with the threaded ring (401) through the T-shaped ring frame (408).

5. The wear-resistant assembly for a pulley with replaceable friction plates as described in claim 1, characterized in that, The friction plate assembly (3) includes a friction plate body (301), which is engaged with the inner side of several guide frames (2). A retaining ring (302) is fixed on one side of the friction plate body (301), and several guide blocks (303) are uniformly fixed in a ring shape on the outside of the friction plate body (301).

6. The wear-resistant assembly for a pulley with replaceable friction plates as described in claim 5, characterized in that, The friction plate body (301) and the retaining ring (302) are integrally formed. The pulley body (1) has an annular groove on one side that matches the retaining ring (302). The friction plate body (301) and the pulley body (1) form a locking structure through the retaining ring (302).

7. The wear-resistant assembly for a pulley with replaceable friction plates as described in claim 5, characterized in that, The inner side of the retaining ring (302) is provided with a retaining groove that matches the end of the limiting rod (407). When the limiting rod (407) is located at the highest point inside the limiting groove (406), the end of the limiting rod (407) is just engaged in the retaining groove inside the retaining ring (302).

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