Dustproof device of generator belt pulley

Abstract

The dustproof device comprises a belt pulley body matched with a generator output shaft, a dustproof cover is arranged on the surface of the front side of the belt pulley body, the dustproof cover is arranged at the front end of the generator output shaft in a sleeved mode, a fixing plate is arranged on the surface of the rear side of the belt pulley body, and the fixing plate is of a square structure. A through opening allowing an output shaft of the generator to penetrate is formed in the fixing plate in a penetrating mode, an inner groove is formed in the inner side wall of the through opening in the circumferential direction, the inner bottom wall of the inner groove is of a rectangular structure, a dustproof assembly is arranged in the inner groove, two rotating handles are rotationally arranged at the top of the fixing plate, and a cross groove is formed in the center of the front end face of the output shaft of the generator. A cross-shaped clamping block is arranged on the inner side wall of the dustproof cover; according to the device, the first rubber layer and the second rubber layer are attached to the outer side surface of the generator output shaft to generate extrusion force, and the first rubber layer and the second rubber layer at the left end and the right end of the port are mutually extruded, so that the sealing performance can be fully ensured, and the dustproof effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulleys, in particular to a dustproof device for a generator pulley. Background Art

[0002] The automobile generator is the main power source of the car. Its function is to supply power to all electrical devices (except the starter) and charge the battery when the engine is running normally (above idling speed). With the continuous technological upgrading of automobile engines, higher requirements are placed on the reliability of the generator. The reliability of the pulley installation directly affects the engine's transmission of its working mechanical energy through the pulley to allow the generator to generate electrical energy.

[0003] Usually, automobile engines use pulleys to transmit power to the automobile engine through transmission belts. The transmission automobile generator pulley is an ordinary pulley, which runs synchronously with the automobile engine. The existing automobile generator pulley has poor sealing effect and poor dustproof performance. When dust enters the pulley, it is easy to generate vibration or noise, resulting in a shorter pulley life. Therefore, we design a dustproof device for the generator pulley to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a dustproof device for a generator pulley to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A dustproof device for a generator pulley comprises a pulley body matched with a generator output shaft, a dustproof cover is provided on the front surface of the pulley body, the dustproof cover is sleeved on the front end of the generator output shaft, a fixing plate is provided on the rear surface of the pulley body, the fixing plate is a square structure, a through opening is penetrated through the fixing plate for the generator output shaft to pass through, an inner side wall of the through opening is provided with an inner groove along its circumferential direction, an inner bottom wall of the inner groove is a rectangular structure, a dustproof assembly is provided inside the inner groove, and two turning handles are rotatably provided on the top of the fixing plate.

[0007] As a preferred solution of the utility model: the dustproof component includes a threaded rod rotatably arranged between the inner walls on the upper and lower sides of the inner groove, two threaded rods are provided, and are symmetrically distributed on the left and right sides of the through opening, the outside of the threaded rod is provided with two groups of external threads in opposite directions, and the two groups of external threads are symmetrically distributed on both sides of the midpoint of the length direction of the threaded rod, the upper half of the threaded rod is threadedly sleeved with a first lifting block, the sides of the two first lifting blocks close to each other are provided with a first connecting block, and an upper arc clamping plate is fixedly connected between the two first connecting blocks, the lower half of the threaded rod is threadedly sleeved with a second lifting block, the sides of the two second lifting blocks close to each other are provided with a second connecting block, and a lower arc clamping plate is fixedly connected between the two second connecting blocks.

[0008] As a further preferred solution of the utility model: the lower surface of the upper arc-shaped clamping plate and the lower surfaces of the two first connecting blocks are both provided with a first rubber layer, and the first rubber layers at multiple locations are integrally formed.

[0009] As a further preferred solution of the utility model: the upper surface of the lower arc-shaped clamping plate and the upper surfaces of the two second connecting blocks are both provided with a second rubber layer, and the second rubber layers at multiple locations are integrally formed.

[0010] As a further preferred solution of the utility model: the thickness of the first connecting block is greater than the thickness of the first lifting block, the thickness of the second connecting block is greater than the thickness of the second lifting block, and when the first rubber layer and the second rubber layer are pressed against each other, the first lifting block and the second lifting block do not contact.

[0011] As a further preferred solution of the utility model: a cross groove is provided at the center of the front end surface of the generator output shaft, a cross block matching the cross groove is provided on the inner side wall of the dust cover, and the dust cover is integrally formed with the pulley body.

[0012] As a further preferred solution of the utility model: the top end of the threaded rod is connected to a rotating rod, and the other end of the rotating rod passes through the fixed plate and is connected to the corresponding rotating handle.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When the device is in use, the staff can drive the threaded rod to rotate by rotating the handle. Under the action of the threaded connection, the two first lifting blocks can be controlled to move downward and the two second lifting blocks can be controlled to move upward, thereby driving the upper arc clamping plate and the lower arc clamping plate to move toward the direction of the generator output shaft at the same time, until the first rubber layer and the second rubber layer are attached to the outer surface of the generator output shaft and generate extrusion pressure. At the same time, the first rubber layer and the second rubber layer at the left and right ends of the through hole are also squeezed against each other, so the sealing can be fully guaranteed and the dustproof effect can be improved.

[0015] 2. In this device, a cross groove begins at the center of the front end face of the generator output shaft, and a cross clamping block matching the cross groove is provided on the inner wall of the dust cover. The integrated formation of the dust cover and the pulley body improves the convenience of installation of the device. At the same time, the dust cover also has a sealing and dustproof effect. In addition, through the coordinated connection of the cross clamping block and the cross groove, the connection between the pulley body and the generator output shaft is more firmly connected, thereby improving the anti-slip performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial structural diagram of the utility model;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0019] Wherein: 1-pulley body, 2-turn handle, 3-upper arc clamping plate, 4-generator output shaft, 5-lower arc clamping plate, 6-cross clamping block, 7-dust cover, 8-fixing plate, 9-inner groove, 10-rotating rod, 11-threaded rod, 12-through port, 13-first lifting block, 14-second lifting block, 15-second connecting block, 17-second rubber layer, 18-first rubber layer, 20-first connecting block. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it 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 indirectly connected through an intermediate medium, or it can be the internal connection 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.

[0021] See also Figure 1-3In the embodiment of the utility model, a dustproof device for a generator pulley comprises a pulley body 1 matched with a generator output shaft 4, a dustproof cover 7 is provided on the front surface of the pulley body 1, and the dustproof cover 7 is sleeved on the front end of the generator output shaft 4, and a fixing plate 8 is provided on the rear surface of the pulley body 1. The fixing plate 8 is a square structure, and a through opening 12 for the generator output shaft 4 to pass through is opened on the fixing plate 8. An inner groove 9 is opened on the inner side wall of the through opening 12 along its circumferential direction, and the inner bottom wall of the inner groove 9 is a rectangular structure. A dustproof component is provided inside the inner groove 9, and two turning handles 2 are rotatably provided on the top of the fixing plate 8.

[0022] The dustproof component includes a threaded rod 11 rotatably arranged between the upper and lower inner walls of the inner groove 9. Two threaded rods 11 are provided and are symmetrically distributed on the left and right sides of the through opening 12. Two groups of external threads in opposite directions are provided on the outside of the threaded rod 11. The two groups of external threads are symmetrically distributed on both sides of the midpoint of the length direction of the threaded rod 11. The upper half of the threaded rod 11 is threadedly sleeved with a first lifting block 13. The sides of the two first lifting blocks 13 close to each other are provided with first connecting blocks 20, and the upper arc-shaped clamping plate 3 is fixedly connected between the two first connecting blocks 20.

[0023] The lower half of the threaded rod 11 is threadedly sleeved with a second lifting block 14 , and the sides of the two second lifting blocks 14 close to each other are each provided with a second connecting block 15 , and a lower arc-shaped clamping plate 5 is fixedly connected between the two second connecting blocks 15 .

[0024] The lower surface of the upper arc-shaped clamping plate 3 and the lower surfaces of the two first connecting blocks 20 are both provided with a first rubber layer 18, and the first rubber layer 18 is integrally formed in multiple locations. The upper surface of the lower arc-shaped clamping plate 5 and the upper surfaces of the two second connecting blocks 15 are both provided with a second rubber layer 17, and the second rubber layer 17 is integrally formed in multiple locations.

[0025] The thickness of the first connecting block 20 is greater than that of the first lifting block 13, and the thickness of the second connecting block 15 is greater than that of the second lifting block 14. When the first rubber layer 18 and the second rubber layer 17 are pressed against each other, the first lifting block 13 and the second lifting block 14 do not contact each other. This design can fully ensure the mutual extrusion force between the first rubber layer 18 and the second rubber layer 17, as well as the extrusion force between the first rubber layer 18, the second rubber layer 17 and the outer surface of the generator output shaft 4, thereby fully ensuring the sealing effect and improving the dustproof performance.

[0026] A cross groove is provided at the center of the front end face of the generator output shaft 4, and a cross block 6 matching the cross groove is provided on the inner side wall of the dust cover 7, and the dust cover 7 is integrally formed with the pulley body 1; the setting that the dust cover 7 and the pulley body 1 are integrally formed improves the convenience of installation of the device, and the dust cover 7 also has the effect of sealing and dustproofing, and, through the matching connection of the cross block 6 and the cross groove, the connection between the pulley body 1 and the generator output shaft 4 is made firmer, and the anti-slip performance is improved.

[0027] The top end of the threaded rod 11 is connected to a rotating rod 10, and the other end of the rotating rod 10 passes through the fixed plate 8 and is connected to the corresponding turning handle 2; when in use, the staff can drive the threaded rod 11 to rotate by rotating the turning handle 2. Under the action of the threaded connection, the two first lifting blocks 13 can be controlled to move downward and the two second lifting blocks 14 can be controlled to move upward, thereby driving the upper arc clamping plate 3 and the lower arc clamping plate 5 to move toward the direction of the generator output shaft 4 at the same time, until the first rubber layer 18 and the second rubber layer 17 are attached to the outer surface of the generator output shaft 4 and generate extrusion pressure. At the same time, the first rubber layer 18 and the second rubber layer 17 at the left and right ends of the through hole 12 are also squeezed against each other, so the sealing can be fully guaranteed and the dustproof effect can be improved.

[0028] It should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A dust prevention device for a generator pulley, comprising a pulley body (1) matched with a generator output shaft (4); characterized in that: The front surface of the pulley body (1) is provided with a dust cover (7), and the dust cover (7) is sleeved on the front end of the generator output shaft (4). The rear surface of the pulley body (1) is provided with a fixing plate (8), and the fixing plate (8) is a square structure. A through hole (12) is opened on the fixing plate (8) for the generator output shaft (4) to pass through. The inner side wall of the through hole (12) is provided with an inner groove (9) along its circumferential direction. The inner bottom wall of the inner groove (9) is a rectangular structure. A dustproof component is provided inside the inner groove (9). Two rotating handles (2) are rotatably provided on the top of the fixing plate (8).

2. The dust prevention device for a generator pulley according to claim 1, characterized in that: The dustproof component comprises a threaded rod (11) rotatably arranged between the inner walls of the upper and lower sides of the inner groove (9), two threaded rods (11) are provided and are symmetrically distributed on the left and right sides of the through opening (12), two groups of external threads in opposite directions are provided on the outside of the threaded rod (11), and the two groups of external threads are symmetrically distributed on both sides of the midpoint of the length direction of the threaded rod (11), the upper half of the threaded rod (11) is threadedly sleeved with a first lifting block (13), the sides of the two first lifting blocks (13) close to each other are each provided with a first connecting block (20), an upper arc-shaped clamping plate (3) is fixedly connected between the two first connecting blocks (20), the lower half of the threaded rod (11) is threadedly sleeved with a second lifting block (14), the sides of the two second lifting blocks (14) close to each other are each provided with a second connecting block (15), and a lower arc-shaped clamping plate (5) is fixedly connected between the two second connecting blocks (15).

3. A dust prevention device for a generator pulley according to claim 2, characterized in that: The lower surface of the upper arc-shaped clamping plate (3) and the lower surfaces of the two first connecting blocks (20) are both provided with a first rubber layer (18), and the first rubber layers (18) at multiple locations are integrally formed.

4. A dust prevention device for a generator pulley according to claim 3, characterized in that: The upper surface of the lower arc-shaped clamping plate (5) and the upper surfaces of the two second connecting blocks (15) are both provided with a second rubber layer (17), and the second rubber layers (17) at multiple locations are integrally formed.

5. A dust prevention device for a generator pulley according to claim 4, characterized in that: The thickness of the first connection block (20) is greater than the thickness of the first lifting block (13), and the thickness of the second connection block (15) is greater than the thickness of the second lifting block (14).

6. A dust prevention device for a generator pulley according to claim 5, characterized in that: When the first rubber layer (18) and the second rubber layer (17) are attached to each other, the first lifting block (13) and the second lifting block (14) are not in contact.

7. The dust prevention device for a generator pulley according to claim 1, characterized in that: A cross groove is provided at the center of the front end surface of the generator output shaft (4), and a cross clamping block (6) matching the cross groove is provided on the inner side wall of the dust cover (7), and the dust cover (7) and the pulley body (1) are integrally formed.

8. The dust prevention device for a generator pulley according to claim 2, characterized in that: The top end of the threaded rod (11) is connected to a rotating rod (10), and the other end of the rotating rod (10) passes through the fixed plate (8) and is connected to the corresponding rotating handle (2).

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