Crankshaft sprocket

Abstract

The utility model discloses a crankshaft chain wheel, and relates to the technical field of crankshaft chain wheels, the crankshaft chain wheel comprises a connecting cylinder and a gear set arranged on the outer side of the connecting cylinder, and a connecting mechanism is arranged between the gear set and the connecting cylinder; the connecting mechanism comprises two sets of pin holes formed in the gear set and pin rods which are slidably arranged in the connecting cylinder and used for being inserted into the pin holes in a matched mode when the crankshaft is inserted into the connecting cylinder, and pressing plates are fixedly arranged at the ends, away from the pin holes, of the pin rods. Through the split design of the gear set and the connecting cylinder, when the first gear and other parts of the crankshaft chain wheel are damaged, only the damaged parts need to be detached and replaced independently, the service life of the crankshaft chain wheel is prolonged, the later maintenance cost of equipment is reduced, and when a crankshaft is inserted into the connecting cylinder, under the guiding of a side pressure inclined plane, the crankshaft is prevented from being damaged. The pin rod in the connecting mechanism can be quickly and automatically inserted into the pin hole to complete the connecting and fixing process between the gear set and the connecting cylinder, and the operation is more convenient and faster.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crankshaft sprocket, in particular to a crankshaft sprocket. BACKGROUND

[0002] The crankshaft sprocket is a mechanical component, usually used in mechanical equipment such as automobile engines, its main function is to transmit power to the chain from the crankshaft, so as to realize the operation of the machine. The crankshaft sprocket connects the crankshaft and the chain with each other, and converts mechanical energy into the movement ability of the chain, so as to drive the related mechanical equipment.

[0003] The patent with publication number CN217481902U discloses a "damping and anti-jumping crankshaft sprocket", which comprises a crankshaft sprocket body, the crankshaft sprocket body comprises a first gear matched with a damping pulley, the first gear comprises a mounting surface and a gear surface, the gear surface is located at the periphery of the mounting surface, the upper surface height of the mounting surface is lower than that of the gear surface, and the mounting surface is sequentially provided with a second gear, a third gear and a fourth gear from close to the mounting surface to far away from the mounting surface. The utility model increases the meshing teeth on the upper surface of the fourth gear, so as to reduce the vibration of the sprocket during use, thereby reducing the jumping of the gear.

[0004] According to the related technology in the above, the inventors believe that the crankshaft sprocket is of a whole type, when the first gear and other parts of the crankshaft sprocket are damaged, the crankshaft sprocket needs to be replaced as a whole, which increases the maintenance cost of the equipment in the later period, and therefore needs to be improved. Utility model content

[0005] In order to solve the above problems, the present application provides a crankshaft sprocket.

[0006] The crankshaft sprocket provided by the present application adopts the following technical scheme:

[0007] The crankshaft sprocket comprises a connecting cylinder and a gear set arranged outside the connecting cylinder, a connecting mechanism is arranged between the gear set and the connecting cylinder; the connecting mechanism comprises two groups of pin holes arranged in the gear set, and a pin rod arranged in the connecting cylinder and used for being inserted into the pin hole when the crankshaft is inserted into the connecting cylinder; one end of the pin rod away from the pin hole is fixedly provided with a pressing plate, side pressing inclined surfaces are arranged on both sides of the pressing plate and used for pressing the pin rod into the pin hole through guiding when the crankshaft is inserted into the connecting cylinder; and an elastic piece is arranged in the connecting cylinder and used for pushing the pin rod away from the pin hole when the crankshaft is separated from the connecting cylinder.

[0008] By adopting the technical scheme, when a part of the crankshaft sprocket is damaged, only the damaged part needs to be separately disassembled and replaced, the service life of the crankshaft sprocket is prolonged, and the maintenance cost of the equipment in the later period is reduced, and when the crankshaft is inserted into the connecting cylinder, under the guidance of the side pressure inclined surface, the pin rod in the connecting mechanism can be quickly and automatically inserted into the pin hole to complete the connection and fixing process between the gear set and the connecting cylinder.

[0009] Preferably, the gear set comprises a first gear, a second gear, a third gear and a fourth gear which are sequentially arranged from bottom to top on the outer wall of the matching connecting cylinder, two groups of pin holes are arranged in the first gear, the second gear, the third gear and the fourth gear respectively, the first gear is fixedly connected with the second gear, a plurality of calibration holes are arranged on the outer wall of the first gear, the one end of the connecting cylinder is provided with a first meshing tooth, and the other end of the connecting cylinder is provided with a second meshing tooth.

[0010] By adopting the technical scheme, the first gear and other gears in the gear set can be connected with the automobile engine and other equipment, the connecting cylinder can be more matched with the automobile engine and other equipment connected through the first meshing tooth and the second meshing tooth, so as to reduce the runout of the gear, and further reduce the vibration of the sprocket in the use process.

[0011] Preferably, the connecting cylinder is provided with a connecting channel for inserting the crankshaft, the outer wall of the connecting cylinder is provided with two groups of limiting grooves which are communicated with the connecting channel, the pin rod and the pressing plate are slidingly connected in the matching limiting grooves, and the elastic member comprises a reset spring which is fixedly arranged between one side of the pressing plate and the inner wall of the limiting groove.

[0012] By adopting the technical scheme, through the elastic force of the reset spring, the pin rod can be pushed away from the pin hole when the crankshaft is separated from the connecting cylinder, so as to facilitate the disassembly of the gear set on the connecting cylinder by the staff.

[0013] Preferably, the inner wall of the first gear, the third gear and the fourth gear is fixedly provided with a plurality of first magnet blocks, and the outer wall of the connecting cylinder is fixedly provided with second magnet blocks which are magnetically attracted to the first magnet blocks.

[0014] By adopting the technical scheme, through the magnetic attraction of the first magnet blocks and the second magnet blocks, the gear set on the outer side of the connecting cylinder can be fixed before the crankshaft is inserted into the connecting cylinder, so as to facilitate the plug-in of the pin rod to the pin hole in the gear set in the later period.

[0015] In summary, the present application has at least one of the following beneficial technical effects:

[0016] 1. By the split design of the gear set and the connecting cylinder, when the first gear of the crankshaft sprocket and other parts are damaged, only the damaged parts need to be replaced and disassembled separately, prolonging the service life of the crankshaft sprocket and reducing the maintenance cost of the equipment in the later period, and when the crankshaft is inserted into the connecting cylinder, the connecting mechanism pin rod can be quickly and automatically inserted into the pin hole under the guidance of the side pressure inclined plane, to complete the connection and fixation process between the gear set and the connecting cylinder, which is more convenient and fast;

[0017] 2. By the elastic force of the reset spring, the pin rod can be pushed away from the pin hole when the crankshaft is separated from the connecting cylinder, facilitating the disassembly of the gear set on the connecting cylinder by the staff, and the side pressure inclined plane is arranged on both sides of the pressing plate, so that the crankshaft is inserted into the connecting cylinder from two directions, and the pin rod is pushed, and through the magnetic attraction of the first magnet block and the second magnet block, the gear set outside the connecting cylinder can be fixed before the crankshaft is inserted into the connecting cylinder, facilitating the insertion of the pin rod into the pin hole in the gear set in the later period, which is convenient and practical. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the crankshaft sprocket of the embodiment of the application;

[0019] Figure 2 It is a schematic diagram of the overall structure of the crankshaft sprocket of the embodiment of the application;

[0020] Figure 3 It is a schematic diagram of the overall structure of the crankshaft sprocket of the embodiment of the application;

[0021] Figure 4 It is an enlarged view of the main structure A of the embodiment of the application; Figure 3

[0022] Reference signs: 1, connecting cylinder; 11, first meshing tooth; 12, second meshing tooth; 13, connecting channel; 14, limiting groove; 2, first gear; 21, calibration hole; 3, second gear; 4, third gear; 5, fourth gear; 6, pin hole; 61, pin rod; 62, pressing plate; 63, side pressure inclined plane; 64, reset spring; 7, first magnet block; 71, second magnet block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings Figures 1-4 The application will be further described in detail.

[0024] The embodiment of the application discloses a crankshaft sprocket.

[0025] The crankshaft sprocket, referring to Figures 1-3 ​, including connecting cylinder 1, first gear 2, second gear 3, third gear 4 and fourth gear 5, first gear 2, second gear 3, third gear 4 and fourth gear 5 are sequentially arranged from bottom to top in the outer wall of the connecting cylinder 1, and first gear 2, second gear 3, third gear 4 and fourth gear 5 form a gear set, and connecting cylinder 1, first gear 2, second gear 3, third gear 4 and fourth gear 5 form the existing crankshaft sprocket, the internal structure and principle are disclosed, here no more tedious, the first gear 2 and other gears in the gear set can be connected with automobile engine and other equipment.

[0026] Referring to Figures 1-3 , the first gear 2 is fixedly connected with the second gear 3, the outer wall of the first gear 2 is provided with a plurality of calibration holes 21, one end of the connecting cylinder 1 is provided with first meshing teeth 11, the other end of the connecting cylinder 1 is provided with second meshing teeth 12, the connecting cylinder 1 is provided with a connecting channel 13 for inserting the crankshaft, the connecting cylinder 1 can be more matched with the automobile engine and other equipment connected through the first meshing teeth 11 and the second meshing teeth 12, so as to reduce the runout of the gear, and further reduce the vibration of the sprocket in use, the calibration hole 21 is a triangular blind hole, so that the subsequent component installation can play a calibration positioning role, and the disclosed technology is provided.

[0027] Referring to Figures 3-4 , the gear set and the connecting cylinder 1 are provided with a connecting mechanism, the connecting mechanism includes two groups of pin holes 6 provided in the gear set, and a pin rod 61 slidingly arranged in the connecting cylinder 1 and inserted into the pin hole 6 when the crankshaft is inserted into the connecting cylinder 1, the two groups of pin holes 6 are respectively provided in the first gear 2, the second gear 3, the third gear 4 and the fourth gear 5, and the pin rod 61 is fixedly installed on the outer side of the connecting cylinder 1 after being inserted into the corresponding pin hole 6.

[0028] Referring to Figures 3-4 , the end of the pin rod 61 away from the pin hole 6 is fixedly provided with a pressing plate 62, the pressing plate 62 is provided with a side pressure inclined surface 63 on both sides for guiding the pin rod 61 into the pin hole 6 when the crankshaft is inserted into the connecting cylinder 1, the outer wall of the connecting cylinder 1 is provided with two groups of limiting grooves 14 communicating with the connecting channel 13, the pin rod 61 and the pressing plate 62 are slidingly connected in the matching limiting groove 14, and the connecting cylinder 1 can support and limit the pin rod 61 and the pressing plate 62 through the limiting groove 14.

[0029] When the crankshaft is inserted into the connecting channel 13 of the connecting cylinder 1, the pressing plate 62 will be completely pressed into the limiting groove 14 under the guidance of the side pressing slope 63, at this time, the pin rod 61 will be pressed into the pin hole 6, so as to connect and fix the gear set composed of the first gear 2 and other gears and the connecting cylinder 1, and since the side pressing slope 63 is arranged on both sides of the pressing plate 62, the pin rod 61 will be pushed when the crankshaft is inserted into the connecting cylinder 1 from two directions, so as to facilitate the connection and fixation between the gear set and the connecting cylinder 1.

[0030] With reference to Figures 3-4 , the connecting cylinder 1 is provided with an elastic member for pushing the pin rod 61 away from the pin hole 6 when the crankshaft is separated from the connecting cylinder 1, the elastic member comprises a reset spring 64 fixed between one side of the pressing plate 62 and the inner wall of the limiting groove 14, the pressing plate 62 can connect the pin rod 61 and the reset spring 64, when the crankshaft is separated from the connecting cylinder 1, under the elastic force of the reset spring 64 and the connection of the pressing plate 62, the pin rod 61 will be pushed away from the pin hole 6, so as to separate the gear set and the connecting cylinder 1, facilitating the disassembly and replacement of the gear set on the connecting cylinder 1.

[0031] With reference to Figures 3-4 , the inner walls of the first gear 2, the third gear 4 and the fourth gear 5 are fixedly provided with a plurality of first magnet blocks 7, and the outer wall of the connecting cylinder 1 is fixedly provided with a second magnet block 71 magnetically attracted to the first magnet blocks 7, the first magnet blocks 7 and the second magnet block 71 are in abutment, and through the magnetic attraction of the first magnet blocks 7 and the second magnet block 71, the gear set on the outer side of the connecting cylinder 1 can be fixed before the crankshaft is inserted into the connecting cylinder 1, facilitating the later insertion of the pin rod 61 into the pin hole 6 in the gear set.

[0032] The implementation principle of the crankshaft sprocket in the embodiment is as follows:

[0033] When assembling, the staff can sequentially sleeve the first gear 2, the second gear 3, the third gear 4 and the fourth gear 5 on the outer wall of the connecting cylinder 1 which is suitable, and magnetically attract and fix the gear set composed of the first gear 2 and other gears through the magnetic attraction of the first magnet blocks 7 and the second magnet block 71, and then insert the crankshaft into the connecting channel 13 of the crankshaft sprocket;

[0034] When the crankshaft is inserted into the connecting channel 13 of the connecting cylinder 1, the pressing plate 62 will be completely pressed into the limiting groove 14 under the guidance of the side pressing slope 63, at this time, the pin rod 61 will be pressed into the pin hole 6, so as to connect and fix the gear set composed of the first gear 2 and other gears and the connecting cylinder 1, and since the side pressing slope 63 is arranged on both sides of the pressing plate 62, the pin rod 61 will be pushed when the crankshaft is inserted into the connecting cylinder 1 from two directions, so as to facilitate the connection and fixation between the gear set and the connecting cylinder 1;

[0035] When the crankshaft is disconnected from the connecting cylinder 1, the pin rod 61 is pushed away from the pin hole 6 under the elastic force of the reset spring 64 and the connection of the pressing plate 62, so that the gear set is disconnected from the connecting cylinder 1, and the gear set on the connecting cylinder 1 is convenient for workers to disassemble and replace;

[0036] And through the split design of the gear set and the connecting cylinder 1, when the first gear 2 and other parts of the crankshaft sprocket are damaged, only the damaged parts need to be disassembled and replaced, which prolongs the service life of the crankshaft sprocket and reduces the maintenance cost of the equipment in the later period.

[0037] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A crankshaft sprocket, characterized by The utility model relates to a connecting cylinder (1) and a gear set arranged outside the connecting cylinder (1), and a connecting mechanism is arranged between the connecting cylinder (1) and the gear set. The connecting mechanism comprises two groups of pin holes (6) arranged in the gear set, and a pin rod (61) arranged in the connecting cylinder (1) and inserted into the pin hole (6) when the crankshaft is inserted into the connecting cylinder (1), wherein one end of the pin rod (61) away from the pin hole (6) is fixedly provided with a pressing plate (62), and side pressing inclined surfaces (63) are arranged on both sides of the pressing plate (62) and used for pressing the pin rod (61) into the pin hole (6) through guiding when the crankshaft is inserted into the connecting cylinder (1), and an elastic member is arranged in the connecting cylinder (1) and used for pushing the pin rod (61) away from the pin hole (6) when the crankshaft is separated from the connecting cylinder (1). The gear set comprises a first gear (2), a second gear (3), a third gear (4) and a fourth gear (5) arranged in the outer wall of the connecting cylinder (1) in sequence from bottom to top, and the two groups of pin holes (6) are arranged in the first gear (2), the second gear (3), the third gear (4) and the fourth gear (5) respectively.

2. The crank sprocket of claim 1, wherein: The first gear (2) is fixedly connected with the second gear (3), and a plurality of calibration holes (21) are arranged in the outer wall of the first gear (2).

3. The crank sprocket of claim 2, wherein: One end of the connecting cylinder (1) is provided with a first meshing tooth (11), and the other end of the connecting cylinder (1) is provided with a second meshing tooth (12).

4. The crank sprocket of claim 1, wherein: The connecting cylinder (1) is provided with a connecting channel (13) for inserting the crankshaft.

5. The crank sprocket of claim 1, wherein: The outer wall of the connecting cylinder (1) is provided with two groups of limiting grooves (14) in communication with the connecting channel (13), and the pin rod (61) and the pressing plate (62) are slidingly connected in the corresponding limiting grooves (14).

6. The crank sprocket of claim 5, wherein: The elastic member comprises a reset spring (64) fixedly arranged between one side of the pressing plate (62) and the inner wall of the limiting groove (14).

7. The crank sprocket of claim 6, wherein: The inner walls of the first gear (2), the third gear (4) and the fourth gear (5) are fixedly provided with a plurality of first magnet blocks (7), and the outer wall of the connecting cylinder (1) is fixedly provided with second magnet blocks (71) magnetically attracted to the first magnet blocks (7).

8. The crank sprocket of claim 2, wherein: ​

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