CN113636010A

CN113636010A - Motorcycle chain tensioning device

Info

Publication number: CN113636010A
Application number: CN202111060947.8A
Authority: CN
Inventors: 温红; 姚传峰; 李付君; 荆君; 赵洪光
Original assignee: Shandong Transport Vocational College
Current assignee: Shandong Transport Vocational College
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2021-11-12
Also published as: CN111137398A

Abstract

A chain tensioner for motorcycle features that two slide blocks are driven by slide block drive mechanism to slide along slide holes according to the distance between two nuts on left and right sides of back frame of motorcycle, so the axle centers of two output shafts are respectively overlapped with the axle centers of nuts on same side. Then select suitable sleeve according to the specification of nut, pass through square hole cartridge with the sleeve on the connecting axle, later pass through hexagonal hole cartridge with the sleeve on the nut, through two synchronous syntropy rotations of synchronous actuating mechanism drive gear II, consequently, drive the rotation of drive seat through the cardan shaft drive output shaft, further rotate through connecting axle drive sleeve, thereby realize driving two synchronous syntropy rotations of nut, make motorcycle rear wheel both ends remove backward in step, make the chain tensioning, the inconsistent condition that leads to chain and sprocket to lead to the eccentric wear of two nut turned angle has been avoided and has been taken place.

Description

Motorcycle chain tensioning device

The application is a divisional application of an invention patent with a parent name of 'motorcycle chain tensioning device'; the parent application has the application number: CN 202010112576.2; the application date of the parent application is as follows: 2020-02-24.

Technical Field

The invention relates to the technical field of motorcycle maintenance tools, in particular to a motorcycle chain tensioning device.

Background

The chain of the motorcycle is lengthened due to long-term tension action after long-term riding, the lengthened chain is easy to separate from a chain wheel of a rear wheel, abnormal sound is easy to occur during riding, and therefore the motorcycle needs to be tightly chained after riding for a certain time. The rear frame of the motorcycle is respectively provided with two nuts which are positioned at the left side and the right side of the rear wheel, and the rear wheel shaft of the motorcycle can be pulled to slide in the frame sliding groove by rotating the nuts through a screw rod screwed with the nuts, so that the whole wheel moves backwards for a certain distance, and the chain is tensioned. Since the left and right sides are respectively provided with the nuts, during adjustment, the nut on one side needs to be rotated first and the number of rotation turns needs to be memorized, and then the nut on the other side needs to be rotated and rotated for the same number of turns. If the number of rotation turns is inconsistent, the rear wheel axle can be deviated, and the deviation of the wheel axle can cause the side grinding of the chain wheel and the chain, so that the service life of the chain and the chain wheel is shortened. However, it is difficult to ensure that the two nuts are turned in the same number of turns by manually turning the nuts using a socket wrench.

Disclosure of Invention

The invention aims to provide a motorcycle chain tensioning device which is used for solving the technical problems in the prior art and can tension a motorcycle chain and keep two nuts to synchronously rotate.

In order to achieve the purpose, the invention provides the following scheme:

the invention discloses a motorcycle chain tensioning device, comprising:

the left side and the right side of the rear end of the rack (1) are respectively and rotatably provided with a driving shaft (8) through a bearing II (7), and the two driving shafts (8) are equal in height;

the synchronous driving mechanism drives the two driving shafts (8) to synchronously rotate in the same direction;

the sliding hole (11) is horizontally arranged at the front end of the rack (1) along the left-right direction, and the left side and the right side of the sliding hole (11) are respectively provided with a sliding block (12) in a sliding way;

the sliding block driving mechanism is used for driving the sliding block (12) to slide left and right along the sliding hole (11);

the output shaft (14) is rotatably arranged in the sliding block (12) through a bearing III (13), and the output shaft (14) is in transmission connection with the driving shaft (8) corresponding to the same side through a universal shaft (10);

the driving seat (18) is fixed at the head end of the output shaft (14), a round hole is formed in the driving seat (18), and a plurality of clamping grooves are uniformly formed in the side wall of the round hole along the circumferential direction;

the connecting shaft (19) is of a cylindrical structure, a plurality of bosses (27) are uniformly arranged on the connecting shaft (19) along the circumferential direction, a square head II (20) is coaxially arranged at the front end of the connecting shaft (19), and the connecting shaft (19) is inserted into each corresponding clamping groove in the round hole of the driving seat (18) through the bosses (27); and the lower end of the sleeve (21) is provided with a square hole matched with the square head II (20), the upper end of the sleeve (21) is provided with a hexagonal hole (22) matched with a motorcycle chain adjusting nut, and the sleeve (21) is inserted on the square head II (20) through the square hole.

Preferably, the synchronous driving mechanism comprises a main shaft (2) which is rotatably arranged on the frame (1) through a bearing I (3) and is positioned between two driving shafts (8), a gear II (9) arranged on the driving shafts (8) and a gear I (4) arranged on the main shaft (2), wherein the left side end of the gear I (4) is meshed with the gear II (9) on the left side, and the right side end of the gear I (4) is meshed with the gear II (9) on the right side.

Preferably, the slider driving mechanism comprises screw rods (16) which are rotatably installed on the left side and the right side of the rack (1) through bearings IV (15), the axis direction of the screw rods (16) is horizontally arranged along the left-right direction, a hand wheel (17) is arranged at the outer side end of each screw rod (16), screw holes are formed in the sliders (12), and the tail ends of the screw rods (16) are screwed in the screw holes in the corresponding sliders (12) on the same side.

Preferably, the outside end of gear I (4) is provided with square I (5) of cross section for the coaxial, still includes handle (6), the tail end of handle (6) is provided with the square hole with square I (5) assorted, and handle (6) pass through the square hole cartridge on square I (5).

Preferably, the square head II comprises a ball hole (25) horizontally arranged in the square head II (20), the steel ball (23) is positioned in the ball hole (25), the spring (24) is positioned in the ball hole (25), the outer side end of the spring (24) is connected with the steel ball (23), and the inner side end of the spring is connected with the square head II (20).

Preferably, a magnet (26) is arranged at the bottom of a circular hole in the driving seat (18), and the connecting shaft (19) is made of a ferrous material.

Compared with the prior art, the invention has the following technical effects:

the two sliding blocks are driven by the sliding block driving mechanism to slide along the sliding holes according to the distance between the two nuts on the left side and the right side of the rear frame of the motorcycle, so that the axes of the two output shafts are respectively superposed with the axes of the nuts corresponding to the same side, and the output shafts are in transmission connection with the driving shafts through the universal shafts, so that the universal shafts keep adaptation through angle change after the sliding blocks move. Then select suitable sleeve according to the specification of nut, pass through the square hole cartridge with the sleeve on the connecting axle, later pass through the hexagonal hole cartridge with the sleeve on the nut, with frame 1 whole antedisplacement, because the connecting axle is provided with a plurality of bosss along the circumferencial direction, consequently can ensure that the connecting axle inserts the round hole of drive seat smoothly when the angle of two nuts is different, drive two synchronous syntropy rotations of gear II through synchronous drive mechanism, consequently, drive the output shaft through the cardan shaft and drive the drive seat and rotate, further through connecting axle drive sleeve rotation, thereby realize driving two synchronous syntropy rotations of nut, make motorcycle rear wheel both ends remove backward in step, make the chain tensioning, avoided two inconsistent condition that lead to chain and sprocket to lead to the eccentric wear of nut turned angle to take place.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic view of the structure in the direction A of FIG. 1;

FIG. 3 is a schematic view of the cross-sectional structure along the line B-B in FIG. 1;

FIG. 4 is a schematic view of the cross-sectional structure of FIG. 3 along the direction C-C;

in the figure, 1, a frame; 2. a main shaft; 3. a bearing I; 4. a gear I; 5. a square head I; 6. a handle; 7. a bearing II; 8. a drive shaft; 9. a gear II; 10. a cardan shaft; 11. a slide hole; 12. a slider; 13. a bearing III; 14. an output shaft; 15. a bearing IV; 16. a screw; 17. a hand wheel; 18. a driving seat; 19. a connecting shaft; 20. a square head II; 21. a sleeve; 22. a hexagonal hole; 23. a steel ball; 24. a spring; 25. a ball hole; 26. a magnet; 27. and (4) a boss.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1 to 4, the present embodiment provides a motorcycle chain tensioner comprising: the left side and the right side of the rear end of the rack 1 are respectively and rotatably provided with a driving shaft 8 through a bearing II 7, and the two driving shafts 8 are equal in height; the synchronous driving mechanism drives the two driving shafts 8 to synchronously rotate in the same direction; the sliding hole 11 is horizontally arranged at the front end of the frame 1 along the left-right direction, and the left side and the right side of the sliding hole 11 are respectively provided with a sliding block 12 in a sliding manner; the slide block driving mechanism is used for driving the slide block 12 to slide left and right along the slide hole 11; the output shaft 14 is rotatably arranged in the sliding block 12 through a bearing III 13, the output shaft 14 is in transmission connection with the corresponding driving shaft 8 on the same side through a universal shaft 10, the universal shaft 11 comprises an intermediate shaft, and two ends of the intermediate shaft are respectively fixed with a universal joint; the driving seat 18 is fixed at the head end of the output shaft 14, a round hole is formed in the driving seat 18, and a plurality of clamping grooves are uniformly formed in the side wall of the round hole along the circumferential direction; the connecting shaft 19 is of a cylindrical structure, a plurality of bosses 27 are uniformly arranged on the connecting shaft 19 along the circumferential direction, the number of the bosses 27 is matched with the number of the clamping grooves, a square head II 20 is coaxially arranged at the front end of the connecting shaft 19, and the connecting shaft 19 is inserted into each corresponding clamping groove in the round hole of the driving seat 18 through the bosses 27; and the lower end of the sleeve 21 is provided with a square hole matched with the square head II 20, the upper end of the sleeve 21 is provided with a hexagonal hole 22 matched with a motorcycle chain adjusting nut, and the sleeve 21 is inserted on the square head II 20 through the square hole. When the universal joint is used, firstly, the two sliding blocks 12 are driven by the sliding block driving mechanism to slide along the sliding holes 11 according to the distance between the two nuts on the left side and the right side of the rear frame of the motorcycle, so that the axes of the two output shafts 14 are respectively overlapped with the axes of the nuts corresponding to the same side, and the output shafts 14 are in transmission connection with the driving shaft 8 through the universal shaft 10, so that the universal shaft 10 keeps adaptation through the change of the angle after the sliding blocks 12 move. Then select suitable sleeve 21 according to the specification of nut, insert sleeve 21 on connecting axle 19 through the square hole, later insert sleeve 21 on the nut through hexagonal hole 22, with the whole antedisplacement of frame 1, because connecting axle 19 is provided with a plurality of bosss 27 along the circumferencial direction, consequently can ensure that connecting axle 19 inserts the round hole of drive seat 18 smoothly when the angle of two nuts is different, drive two gears II 9 synchronous syntropy through synchronous drive mechanism and rotate, consequently drive output shaft 14 through cardan shaft 10 and drive seat 18 and rotate, further drive sleeve 21 through connecting axle 19 and rotate, thereby realize driving two nuts synchronous syntropy and rotate, make the rear wheel both ends of motorcycle move backward in step, make the chain tensioning, avoided two nut turned angle inconsistent to lead to chain and sprocket to the condition emergence of eccentric wear.

The synchronous driving mechanism can be of a structure comprising a main shaft 2 which is rotatably arranged on the frame 1 through a bearing I3 and is positioned between two driving shafts 8, a gear II 9 arranged on the driving shafts 8 and a gear I4 arranged on the main shaft 2, wherein the left side end of the gear I4 is meshed with the gear II 9 on the left side, and the right side end of the gear I4 is meshed with the gear II 9 on the right side. When the gear I4 rotates, the synchronous driving gear II 9 rotates in the same direction, so that the two output shafts 14 are driven to rotate in the same direction synchronously through the universal shafts 10.

The slide block driving mechanism can be of a structure comprising screw rods 16 which are rotatably arranged on the left side and the right side of the frame 1 through bearings IV 15 respectively, the axis direction of the screw rods 16 is horizontally arranged along the left-right direction, the outer side end of each screw rod 16 is provided with a hand wheel 17, the slide block 12 is provided with a screw hole, and the tail end of each screw rod 16 is screwed in the screw hole in the corresponding slide block 12 on the same side. The hand wheel 17 is rotated to drive the screw 16, so that the screw 16 is rotated to slide the slider 12 left and right along the slide hole 11.

Preferably, the outside end of gear I4 is provided with the square I5 of cross section for the square coaxially, still includes handle 6, and the tail end of handle 6 is provided with the square hole with I5 assorted square holes of square, and handle 6 passes through the square hole cartridge on square I5. On handle 6 inserted square head I5 through the square hole to can rotate through handle 6 drive gear I4, thereby make two 14 synchronous syntropy rotations of output shaft, simple to operate.

Preferably, the square head II comprises a ball hole 25 horizontally arranged in the square head II 20, the steel ball 23 is positioned in the ball hole 25, the spring 24 is positioned in the ball hole 25, the outer side end of the spring 24 is connected with the steel ball 23, and the inner side end of the spring is connected with the square head II 20. When the square hole of the sleeve 21 is inserted into the square head II 20, the inner wall of the square hole of the sleeve 21 extrudes the steel ball 23 inwards and compresses the spring 24, and after the sleeve 21 is installed in place, under the elastic action of the spring 24, the steel ball 23 is pressed on the inner wall of the square hole of the sleeve 21, so that the connection firmness of the sleeve 21 and the connecting shaft 19 is improved.

The bottom of the round hole in the driving seat 18 is provided with a magnet 26, the connecting shaft 19 is made of iron materials, and after the connecting shaft 19 rotates to a required position and is inserted into the round hole of the driving seat 18, the connecting shaft is attracted and fixed by the magnet 26, so that the firmness of connecting and fixing the driving seat 18 and the connecting shaft 19 is improved.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims

1. A motorcycle chain tensioner, comprising:

the left side and the right side of the rear end of the rack (1) are respectively and rotatably provided with a driving shaft (8), and the two driving shafts (8) are equal in height;

the output shaft (14) is rotatably arranged in the sliding block (12), and the output shaft (14) is in transmission connection with the corresponding driving shaft (8) on the same side through a universal shaft (10);

the connecting shaft (19) is uniformly provided with a plurality of bosses (27) along the circumferential direction, and the connecting shaft (19) is inserted into corresponding clamping grooves in the round hole of the driving seat (18) through the bosses (27); the sleeve (21) and the connecting shaft (19) can be detachably connected, and a hexagonal hole (22) matched with a motorcycle chain adjusting nut is formed in the upper end of the sleeve (21);

the slider driving mechanism comprises screw rods (16) which are rotatably installed on the left side and the right side of the rack (1) through bearings IV (15), the axis direction of the screw rods (16) is horizontally arranged along the left-right direction, hand wheels (17) are arranged at the outer side ends of the screw rods (16), screw holes are formed in the sliders (12), and the tail ends of the screw rods (16) are screwed in the screw holes in the sliders (12) corresponding to the same side.

2. A motorcycle chain tensioner as claimed in claim 1, wherein: synchronous drive mechanism includes that it installs on frame (1) and is located two to rotate through bearing I (3) main shaft (2) between drive shaft (8), install in gear II (9) on drive shaft (8) and install in gear I (4) on main shaft (2), the left side end of gear I (4) meshes with gear II (9) that are located its left side mutually, the right side end of gear I (4) meshes with gear II (9) that are located its right side mutually.

3. A motorcycle chain tensioner as claimed in claim 2, wherein: the outer side end of the gear I (4) is coaxially provided with a square head I (5) with a square cross section, the gear further comprises a handle (6), a square hole matched with the square head I (5) is formed in the tail end of the handle (6), and the handle (6) is inserted into the square head I (5) through the square hole.

4. A motorcycle chain tensioner as claimed in claim 1, wherein: the square head is characterized by further comprising a ball hole (25) horizontally arranged in the square head II (20), the steel ball (23) is located in the ball hole (25), the spring (24) is located in the ball hole (25), and the outer side end of the spring (24) is connected with the steel ball (23).

5. A motorcycle chain tensioner as claimed in claim 1, wherein: the bottom of the round hole in the driving seat (18) is provided with a magnet (26), and the connecting shaft (19) is made of an iron material.

6. A motorcycle chain tensioner as claimed in claim 1, wherein: the driving shaft (8) is rotatably connected to the rack (1) through a bearing II (7).

7. A motorcycle chain tensioner as claimed in claim 1, wherein: the output shaft (14) is rotatably arranged in the sliding block (12) through a bearing III (13).

8. A motorcycle chain tensioner as claimed in claim 1, wherein: the front end of the connecting shaft (19) is coaxially provided with a square head II (20), the lower end of the sleeve (21) is provided with a square hole matched with the square head II (20), and the sleeve (21) is inserted on the square head II (20) through the square hole.