Friction type one-way belt pulley for generator

Abstract

The friction type one-way belt pulley comprises a belt pulley body and a driving shaft, a mounting groove for the driving shaft to be embedded is formed in the center of the surface of the rear side of the belt pulley body, four inner grooves are formed in the inner side wall of the mounting groove at equal intervals in the circumferential direction of the mounting groove, and a groove is formed in the surface of the outer side of the driving shaft. An abutting block is slidably arranged in the inner groove, a first spring is connected to the inner bottom wall of the inner groove, a clamping block is arranged in the groove, a second spring is connected to the inner bottom wall of the groove, four through grooves are formed in the surface of the front side of the belt wheel body in the circumferential direction at equal intervals, connecting rods are slidably arranged in the through grooves, and the inner ends of the connecting rods are fixedly connected with the abutting block. A rotating shaft is arranged on the front side surface of the belt pulley body, a rotating button is arranged at the front end of the rotating shaft, and a pull rope is connected between the outer side surface of the sliding block and the outer side surface of the rotating shaft; the whole mounting and dismounting process of the device can be completed with one hand, operation is easy and convenient, time and labor are saved, practicability is high, and the device is worthy of application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of pulleys, in particular to a friction type one-way pulley for a generator. Background Art

[0002] The car generator pulley is connected to the car engine through a belt, and the engine drives the generator to rotate. During the use of the generator, when the engine or other mechanical structure suddenly accelerates or decelerates, the speed of the generator pulley also changes. Due to the effect of inertia, the speed of the generator rotor and the pulley will be instantly out of sync, and there will be an impact between the pulley and the belt on it, which will reduce the life of the belt and generate noise; when the engine reduces the speed or stops working, the pulley will have a very short reverse rotation. Although it is a very short-term small rotation, it will also drive the generator rotor to reverse an angle and generate negative electricity, and then switch to positive electricity. In this way, the coil in the generator rotor is repeatedly impacted by positive and negative electricity, which reduces the service life of the coil, thereby reducing the life of the generator. In order to improve the above situation, a one-way pulley is used to change the original fixed connection between the pulley and the generator shaft to a one-way rotating connection. When the engine speed is reduced or stopped, the generator can maintain the original inertial rotation and reduce the instantaneous impact on the belt.

[0003] During use, the one-way pulley wears severely and needs to be replaced and maintained frequently. However, the existing one-way pulley is not convenient to install, which brings great trouble to the operator's maintenance. Therefore, we design a friction one-way pulley for generator to solve the above technical problems. Utility Model Content

[0004] The utility model aims to provide a friction type one-way pulley for a generator 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 friction type one-way pulley for a generator comprises a pulley body and a driving shaft, wherein a mounting groove for embedding the driving shaft is provided at the center of the rear side surface of the pulley body, and the inner side wall of the mounting groove is provided with four inner grooves at equal intervals along its circumferential direction, and the outer side surface of the driving shaft is provided with grooves corresponding to the four inner grooves one by one, and an abutment block adapted to the inner groove is slidably provided in the inner groove, and a first spring is fixedly connected to the inner bottom wall of the inner groove, and the other end of the first spring is fixedly connected to the surface of the abutment block, and a clamping block adapted to the inner groove is slidably provided in the groove, and the inner bottom wall of the groove A second spring is fixedly connected, and the other end of the second spring is fixedly connected to the surface of the clamping block. The front surface of the pulley body is provided with four through grooves at equal intervals in the circumferential direction, and a connecting rod adapted to it is slidably provided in the through groove. The inner end of the connecting rod is fixedly connected to the abutment block, and the outer end of the connecting rod is connected to a slider, and the slider is slidably arranged on the front surface of the pulley body. A rotating shaft is rotatably arranged at the center of the front surface of the pulley body, and a rotating knob is arranged at the front end of the rotating shaft, and a pull rope is fixedly connected between the outer surface of the slider and the outer surface of the rotating shaft.

[0007] As a preferred solution of the utility model: the outer surface of one end of the clamping block close to the second spring is symmetrically provided with a limit block, and the inner wall of the groove is provided with a limit groove for the limit block to slide and embed.

[0008] As a further preferred solution of the utility model: the edge of the groove of the installation groove is a chamfered structure.

[0009] As a further preferred solution of the utility model: the ends of the clamping block and the abutting block close to each other are both hemispherical structures.

[0010] As a further preferred solution of the utility model: the size of the notch of the inner groove is equal to the size of the notch of the groove.

[0011] As a further preferred solution of the utility model: four through grooves are arranged in one-to-one correspondence with four inner grooves, and the through grooves are connected with the inside of the corresponding inner grooves.

[0012] The invention has the following advantages: when the device is installed, the pulley body and the driving shaft are connected, and the driving shaft is easily and smoothly embedded in the installation groove. In this process, the clamping block is squeezed back into the groove, and then the pulley body is rotated until the position of the inner groove is aligned with the position of the groove. At this time, the elastic force of the second spring is released, so the clamping block is pushed to move into the inner groove to form a clamping connection, and the installation process of the device is completed; and when it is necessary to disassemble, the staff member twists the knob with one hand, thereby driving the rotating shaft to rotate. When the rotating shaft rotates, it will have the effect of winding the pull rope, so the other end of the pull rope can pull the slider to move closer to the rotating shaft, and then drive the four abutment blocks to move in the direction away from the first spring through the action of the connecting rod, that is, the abutment block can push the clamping block to move, and finally push the clamping block back into the groove, so that the clamping effect fails, and the pulley body can be removed for daily replacement and maintenance operations. The entire installation and disassembly process can be completed with one hand, which is simple and convenient to operate, saves time and effort, has high practicality, and is worthy of popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the overall structure of the utility model;

[0014] Figure 2 It is a front view of the overall structure of the utility model in another working state;

[0015] Figure 3 It is the main sectional view of the utility model;

[0016] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0017] Among them: 1-pulley body, 2-pull rope, 3-through groove, 4-turn button, 5-slider, 6-installation groove, 7-driving shaft, 8-inner groove, 9-first spring, 10-abutment block, 11-limiting block, 12-second spring, 13-groove, 14-limiting groove, 15-clamping block, 16-connecting rod. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-4 In the embodiment of the utility model, a friction type one-way pulley for a generator comprises a pulley body 1 and a driving shaft 7. A mounting groove 6 for embedding the driving shaft 7 is provided at the center of the rear side surface of the pulley body 1. Four inner grooves 8 are provided at equal intervals on the inner side wall of the mounting groove 6 along its circumferential direction. A groove 13 corresponding to the four inner grooves 8 is provided on the outer side surface of the driving shaft 7. The size of the groove of the inner groove 8 is equal to the size of the groove of the groove 13. An abutment block 10 adapted to the inner groove 8 is slidably provided. A first spring 9 is fixedly connected to the inner bottom wall of the inner groove 8. The other end of the first spring 9 is fixedly connected to the surface of the abutment block 10. A clamping block 15 adapted to the inner groove 13 is slidably provided. A second spring 12 is fixedly connected to the inner bottom wall of the groove 13. The other end of the second spring 12 is fixedly connected to the surface of the abutment block 10. One end is fixedly connected to the surface of the clamping block 15, and four through grooves 3 are opened at equal intervals on the front side surface of the pulley body 1 along the circumferential direction, and the four through grooves 3 correspond to the four inner grooves 8 one by one, and the through grooves 3 are connected to the corresponding inner grooves 8. A connecting rod 16 adapted to it is slidably provided in the through groove 3, and the inner end of the connecting rod 16 is fixedly connected to the abutment block 10, and a slider 5 is connected to the outer end of the connecting rod 16. The slider 5 is slidably set on the front side surface of the pulley body 1, and a rotating shaft is rotatably provided at the center of the front side surface of the pulley body 1, and a knob 4 is provided at the front end of the rotating shaft, and a pull rope 2 is fixedly connected between the outer side surface of the slider 5 and the outer side surface of the rotating shaft. When the rotating shaft rotates, the pull rope 2 will be wound up, so the other end of the pull rope 2 can pull the slider 5 to move closer to the direction of the rotating shaft.

[0020] A limit block 11 is symmetrically provided on the outer surface of one end of the clamping block 15 close to the second spring 12, and a limit groove 14 is provided on the inner wall of the groove 13 for the limit block 11 to slide and insert into; through the cooperation of the limit block 11 and the limit groove 14, the clamping block 15 can be prevented from being separated from the groove 13, which would affect the normal use of the device.

[0021] The edge of the groove of the mounting groove 6 is a chamfered structure. When the device is installed, when the drive shaft 7 is embedded in the mounting groove 6, due to the design of the chamfered structure, that is, there is an inclined surface at the edge of the groove of the mounting groove 6, the inclined surface is used to easily squeeze the clamping block 15 back into the groove 13 when it abuts against the clamping block 15, thereby improving the installation portability.

[0022] The ends of the clamping block 15 and the abutting block 10 that are close to each other are symmetrical hemispherical structures. It should be noted that the first spring 9 and the second spring 12 have different functions in the natural state. In the absence of external force: the first spring 9 limits the position of the abutting block 10 and makes the abutting block 10 completely located inside the inner groove 8, while the second spring 12 pushes the clamping block 15 to expose the groove 13 under the action of its own elastic force.

[0023] Specifically, when installing the device, the pulley body 1 and the drive shaft 7 are connected, and the drive shaft 7 is easily and smoothly embedded in the installation groove 6. In this process, the clamping block 15 is squeezed back into the groove 13, and then the pulley body 1 is rotated until the position of the inner groove 8 is aligned with the position of the groove 13. At this time, the elastic force of the second spring 12 is released, so the clamping block 15 is pushed to move into the inner groove 8 to form a clamping connection, completing the installation process of the device; and when it needs to be disassembled, the staff member twists the knob 4 with one hand, thereby driving the shaft to rotate. When the shaft rotates, it will The pull rope 2 has the function of winding the line, so the other end of the pull rope 2 can pull the slider 5 to move closer to the rotating shaft, and then drive the four abutment blocks 10 to move in the direction away from the first spring 9 through the action of the connecting rod 16, that is, the abutment block 10 can push the clamping block 15 to move, and finally push the clamping block 15 back into the groove 13, so that the clamping effect fails, and the pulley body 1 can be removed for daily replacement and maintenance operations. The entire installation and disassembly process can be completed with one hand, which is simple and convenient to operate, saves time and effort, is highly practical, and is worthy of popularization and use.

[0024] 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 friction type one-way pulley for a generator, comprising a pulley body (1) and a drive shaft (7); characterized in that: A mounting groove (6) for embedding the driving shaft (7) is provided at the center of the rear surface of the pulley body (1); four inner grooves (8) are provided at equal intervals on the inner wall of the mounting groove (6) along its circumferential direction; a groove (13) corresponding to the four inner grooves (8) is provided on the outer surface of the driving shaft (7); a contact block (10) adapted to the inner groove (8) is slidably provided in the inner groove (8); a first spring (9) is fixedly connected to the inner bottom wall of the inner groove (8); the other end of the first spring (9) is fixedly connected to the surface of the contact block (10); a clamping block (15) adapted to the inner groove (13) is slidably provided in the inner bottom wall of the inner groove (8); A second spring (12) is fixedly connected, and the other end of the second spring (12) is fixedly connected to the surface of the clamping block (15). The front side surface of the pulley body (1) is provided with four through grooves (3) at equal intervals along the circumferential direction. A connecting rod (16) adapted to the through groove (3) is slidably provided in the through groove (3). The inner end of the connecting rod (16) is fixedly connected to the abutment block (10). The outer end of the connecting rod (16) is connected to a slider (5). A rotating shaft is rotatably provided at the center of the front side surface of the pulley body (1). A rotating knob (4) is provided at the front end of the rotating shaft. A pull rope (2) is fixedly connected between the outer surface of the slider (5) and the outer surface of the rotating shaft.

2. A friction type one-way pulley for a generator according to claim 1, characterized in that: A limit block (11) is symmetrically provided on the outer surface of one end of the clamping block (15) close to the second spring (12), and a limit groove (14) for the limit block (11) to slide and embed is provided on the inner wall of the groove (13).

3. A friction type one-way pulley for a generator according to claim 2, characterized in that: The groove edge of the installation groove (6) is a chamfered structure.

4. A friction type one-way pulley for a generator according to claim 3, characterized in that: The ends of the clamping block (15) and the abutting block (10) that are close to each other are both hemispherical structures.

5. A friction type one-way pulley for a generator according to claim 4, characterized in that: The size of the notch of the inner groove (8) is equal to the size of the notch of the groove (13).

6. A friction type one-way pulley for a generator according to claim 5, characterized in that: The four through grooves (3) and the four inner grooves (8) are arranged in one-to-one correspondence, and the through grooves (3) are connected to the inside of the corresponding inner grooves (8).

7. The friction type one-way pulley for a generator according to claim 1, characterized in that: The slider (5) is slidably arranged on the front surface of the pulley body (1).

Images