CN215475591U - Tightness adjusting structure for transmission belt of motorcycle motor - Google Patents
Tightness adjusting structure for transmission belt of motorcycle motor Download PDFInfo
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- CN215475591U CN215475591U CN202122429482.0U CN202122429482U CN215475591U CN 215475591 U CN215475591 U CN 215475591U CN 202122429482 U CN202122429482 U CN 202122429482U CN 215475591 U CN215475591 U CN 215475591U
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Abstract
The utility model relates to a tightness adjusting structure of a motorcycle motor transmission belt, which comprises a cradle frame and a motor, wherein the cradle frame comprises a cradle left beam and a cradle right beam, the cradle left beam and the cradle right beam respectively comprise a front extension section which inclines upwards and extends forwards, and the lower end of the front extension section is connected with a rear extension section which extends backwards; the motor is arranged on the cradle frame along the left-right direction, the lower part of the motor is rotatably connected between the two rear extension sections through a rotating shaft, and the axis of the rotating shaft is arranged along the left-right direction; the motor upper portion is connected respectively in two preceding extension sections through two locking bolt that bilateral symmetry set up, and locking bolt's axis sets up along left right direction, and the pole portion activity of locking bolt passes the guide groove of running through seting up and with motor threaded connection before the extension section so that fix the motor through the locking bolt of screwing, and locking bolt can slide in the guide groove so that adjust the fore-and-aft distance of motor when the motor rotates with the pivot. The structure can realize stepless regulation of the tightness of the transmission belt through the position regulation of the motor.
Description
Technical Field
The utility model belongs to the technical field of belt pulley transmission, and particularly relates to a tightness adjusting structure for a transmission belt of a motor of a motorcycle.
Background
The transmission modes of the motorcycle mainly comprise three types, namely chain transmission, belt transmission and shaft transmission; the chain transmission is the most common and is generally used for fuel motorcycles, has the advantages of high transmission efficiency, quicker starting and acceleration and the like, but has higher noise and needs to be maintained frequently; shaft transmission and belt transmission are generally used for electric motorcycles, the shaft transmission means that a hub motor is integrated into a rear hub, a transmission system is omitted, the structure is simpler, the transmission efficiency is higher, but the rotational inertia is larger, the controllability is poorer, and the electric braking performance is poorer; the belt transmission means that a motor transmits power to a rear wheel through a belt, and the transmission is more stable due to the fact that the material is soft, the noise is basically avoided, the transmission efficiency is not as good as that of chain transmission due to the influence of friction, particularly, the belt can slip when the torque is large, the belt is easily damaged on uneven road sections, and the belt transmission is only suitable for running on flat streets.
Along with the rapid development of society, the road quality is greatly improved, people pay more attention to noise and driving comfort, and therefore more and more electric motorcycles are driven by belts in recent years; however, after long-term use, the belt is easily stretched, so that the belt slips or transmission fails, and the tightness degree of the belt needs to be adjusted by adjusting the distance between two ends connected with the belt transmission, so as to keep better transmission performance; at present, the tightness degree of the belt pulley is generally regulated by the following method: 1. adjusting the position of the rear wheel in the front-rear direction based on an adjusting mechanism of the frame to adjust the tightness degree of the belt; however, the position of the rear wheel is adjusted more complicated, the adjustment is carried out in a professional maintenance shop, the rear wheel is easy to deflect due to self adjustment, and safety accidents are easy to happen; 2. the output end or the rear wheel of the motor is connected with a belt pulley with a plurality of belt grooves, and the adjusting belt is positioned in the belt grooves with different diameters on the belt pulley so as to adjust the tightness degree of the belt; although the adjustment is simple, each stage of adjustment has a certain span, and the adjustment cannot be accurately adjusted to the most appropriate tightness, so that the transmission performance is easily reduced or the belt abrasion is easily accelerated.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a tightness adjusting structure for a motor transmission belt of a motorcycle, solve the problems that the tightness of a belt pulley is adjusted complicatedly and is difficult to adjust accurately in the existing electric motorcycle and achieve the effect of simply realizing the linear adjustment of the tightness of the belt pulley.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the tightness adjusting structure of the motorcycle motor transmission belt comprises a cradle frame and a motor, wherein the cradle frame comprises a cradle left beam and a cradle right beam which are arranged at left and right intervals, the cradle left beam and the cradle right beam respectively comprise a front extension section which inclines upwards and extends forwards, and the lower end of the front extension section is connected with a rear extension section which extends backwards; the motor is arranged on the cradle frame along the left-right direction and is positioned between the left cradle beam and the right cradle beam; the lower part of the motor is rotatably connected between the two rear extension sections through a rotating shaft, the axis of the rotating shaft is arranged along the left-right direction, and two ends of the rotating shaft are respectively connected with the rear extension sections of the corresponding ends; the upper portion of motor is connected respectively in two preceding extension sections through two locking bolt that bilateral symmetry set up, and locking bolt's axis sets up and the head is located the outside of preceding extension section along left right direction, and the pole portion activity of locking bolt passes and runs through some guiding grooves of seting up and with motor threaded connection on the preceding extension section so that fix the motor through the locking bolt of screwing, the motor so locking bolt can when the pivot rotates the guiding groove slides so that the fore-and-aft distance of motor is adjusted.
Further perfecting the technical proposal, a cradle beam is connected and arranged between the two front extension sections along the left-right direction.
Further, the cradle cross beam is positioned in front of or behind the locking bolt; a connecting block is arranged between any end of the motor and the front extension section of the corresponding end, the rod part of the locking bolt of the corresponding end movably penetrates through the connecting block and then is in threaded connection with the motor, an adjusting bolt vertical to the locking bolt is further arranged on the connecting block in a penetrating mode, the adjusting bolt is in threaded connection with the connecting block to form a lead screw structure, and the rod part of the adjusting bolt faces the cradle cross beam and is connected with the cradle cross beam through the swinging head; the swinging head is movably sleeved on the cradle cross beam, and the rod part of the adjusting bolt movably penetrates into the swinging head and limits the relative axial displacement of the swinging head and the swinging head through the axial limiting piece; when the adjusting bolt rotates, the motor can be driven by the connecting block and the locking bolt to rotate with the rotating shaft.
Furthermore, the two front extension sections are respectively provided with an adjusting support lug extending backwards, the guide groove is arranged on the adjusting support lug, and the cradle beam is positioned in front of the locking bolt.
Furthermore, the adjusting support lug and the front extension section are of an integral structure, a sinking groove is formed in the position, corresponding to the guide groove, of the outer side of the adjusting support lug, and the head of the locking bolt is accommodated in the sinking groove.
Furthermore, a gasket is arranged between the head of the locking bolt and the bottom surface of the sinking groove, and the rod part of the locking bolt movably penetrates through the gasket.
Furthermore, the two rear extension sections are respectively provided with a connecting lug protruding upwards, and two ends of the rotating shaft are respectively connected with the connecting lugs at the corresponding ends; the connecting support lug and the rear extension section are of an integrated structure.
Furthermore, the rotating shaft comprises two fastening bolts which are arranged in a bilateral symmetry mode, the axes of the fastening bolts are arranged along the left-right direction, the heads of the fastening bolts are located on the outer side of the rear extension section, and the rod parts of the fastening bolts penetrate through holes formed in the rear extension section in a movable mode and are in threaded connection with the motor.
Furthermore, the locking bolt and the rotating shaft are arranged in a central symmetry mode with the axis of the motor.
Furthermore, the guide groove is arc-shaped, the circle center of the arc is located on the axis of the rotating shaft, and the width of the guide groove is equal to the diameter of the rod part of the locking bolt.
Compared with the prior art, the utility model has the following beneficial effects:
in the utility model, two end faces of the motor are rotationally connected with the cradle left beam and the cradle right beam through the rotating shaft, and the motor can rotate on the cradle frame to adjust the positions of the motor and the belt pulley at the middle shaft sleeve, so that the linear adjustment of the tightness of the connected transmission belt can be realized, the tightness of the belt is adjusted to the optimal state, the performance of the motor is fully exerted, and the service life of the belt is prolonged; when the motor is used, the locking bolt and the fastening bolt are firstly loosened, the motor can be driven to rotate through the connecting block and the locking bolt by rotating the adjusting bolt, and the locking bolt moves in the guide groove to realize the adjustment of the front and rear positions of the motor; and after the adjustment is finished, screwing the locking bolt and the fastening bolt. The belt tightness degree adjusting device can realize stepless adjustment of belt tightness degree through adjustment of the front position and the rear position of the motor, and has the advantages of simple and reliable structure, convenience in operation and low cost.
Drawings
FIG. 1 is a perspective view I of a tightness adjusting structure of a transmission belt of a motor of a motorcycle according to an embodiment;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a perspective view II of the tightness adjusting structure of the transmission belt of the motor of the motorcycle according to the embodiment;
FIG. 4 is an enlarged view at B in FIG. 3;
the cradle comprises a cradle left beam 1, a cradle right beam 2, a connecting support lug 5, a rotating shaft 6, an adjusting support lug 7, a guide groove 8, a locking bolt 9, a motor 10, a sinking groove 11, a gasket 12, a cradle cross beam 13, a connecting block 14, an adjusting bolt 15 and a swinging head 16.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Example (b):
referring to fig. 1 and 2, the tightness adjusting structure for the transmission belt of the motor of the motorcycle comprises a cradle frame and a motor 10, wherein the cradle frame comprises a left cradle beam 1 and a right cradle beam 2 which are spaced left and right and are oppositely arranged, and each of the left cradle beam 1 and the right cradle beam 2 comprises a front extension section (not fully shown in the figures) which obliquely extends upwards and forwards and a rear extension section (not fully shown in the figures) which transversely extends backwards; the front extension section is connected with a front sleeve (not shown in the figure) of the frame, and the rear extension section is connected with a vertical beam (not shown in the figure) in the middle of the frame; the motor 10 is arranged on the cradle frame in a posture that the rotating shaft is along the left-right direction and is positioned between the left cradle beam 1 and the right cradle beam 2;
the cradle left beam 1 and the cradle right beam 2 are oppositely provided with connecting lugs 5, and two end faces of the motor 10 are rotatably connected with the corresponding connecting lugs 5 through rotating shafts 6; still be equipped with relatively on cradle left side roof beam 1 and the cradle right side roof beam 2 and adjust journal stirrup 7, have on the regulation journal stirrup 7 along the guiding groove 8 that left right direction runs through, wear to be equipped with locking bolt 9 along left right direction activity in the guiding groove 8, the pole portion of locking bolt 9 and the corresponding terminal surface threaded connection of motor 10, motor 10 with locking bolt 9 can when pivot 6 rotates slide in the guiding groove 8, and locking bolt 9's head is located the one side of adjusting journal stirrup 7 and keeping away from motor 10.
In the utility model, two end faces of a motor 10 are rotationally connected with a cradle left beam 1 and a cradle right beam 2 through a rotating shaft 6, the motor 10 can rotate on a cradle frame to realize linear adjustment of tightness of a connected belt, and the tightness of the belt is adjusted to an optimal state, so that the performance of the motor 10 is fully exerted, and the service life of the belt is prolonged; when the position of the motor 10 is adjusted by rotating, the locking bolt 9 moves in the guide groove 8, after the adjustment is completed, the locking bolt 9 is screwed to enable the head of the locking bolt 9 to tightly abut against the adjusting support lug 7 so as to lock the position of the motor 10, the guide groove 8 limits the adjustment range through the locking bolt 9, and safety accidents caused by the fact that the position of the motor 10 is greatly changed when the locking bolt 9 is loosened are avoided; the utility model can realize stepless adjustment of the tightness of the belt pulley and has simple and reliable operation.
Wherein, the guide groove 8 is arc-shaped and concentric with the rotating shaft 6, and the width of the guide groove 8 is equal to the diameter of the rod part of the locking bolt 9; under the condition of ensuring that the locking bolt 9 can rotate along with the motor 10, the width of the guide groove 8 corresponds to the rod part diameter of the locking bolt 9, so that the shaking or shaking of the motor 10 in the rotation direction is reduced, and the installation stability of the motor 10 is improved.
Wherein, a sunk groove 11 is arranged at the position of one side of the adjusting lug 7 far away from the motor 10 corresponding to the guide groove 8 to accommodate the head of the locking bolt 9; the head of the locking bolt 9 is sunk into the adjusting lug 7 to prevent the locking bolt 9 from being knocked and loosened.
A gasket 12 is arranged between the head of the locking bolt 9 and the bottom surface of the sinking groove 11, and the rod part of the locking bolt 9 movably penetrates through the gasket 12; the bottom surface of the sunken groove 11 at the head part of the locking bolt 9 is replaced by the gasket 12 to abut, so that the abutting surface is enlarged, and the locking reliability is improved.
Referring to fig. 1, 3 and 4, a cradle cross beam 13 is connected between the cradle left beam 1 and the cradle right beam 2 along the left-right direction; to improve the structural strength of the cradle while providing a mounting base for the structure described below.
The cradle cross beam 13 is positioned close to the adjusting lug 7; a connecting block 14 is arranged between any one of the adjusting support lugs 7 and the motor 10, the rod part of the locking bolt 9 movably penetrates through the connecting block 14, an adjusting bolt 15 perpendicular to the locking bolt 9 is further arranged on the connecting block 14 in a penetrating manner, the adjusting bolt 15 is in threaded connection with the connecting block 14, the rod part of the adjusting bolt 15 faces the cradle cross beam 13, a swinging head 16 is arranged between the rod part of the adjusting bolt 15 and the cradle cross beam 13, one end of the swinging head 16 is annular and movably sleeved on the cradle cross beam 13, the other end of the swinging head 16 is rotatably connected with the rod part of the adjusting bolt 15, and the relative axial displacement of the two parts is limited by an axial limiting part (not shown in the figure); when the adjusting bolt 15 rotates, the motor 10 can be driven to rotate by the rotating shaft 6 through the connecting block 14 and the locking bolt 9.
When the cradle is used, the locking bolt 9 is firstly unscrewed, so that the position of the motor 10 is in an adjustable state, the adjusting bolt 15 and the connecting block 14 play a role of a lead screw guide rail, when the adjusting bolt 15 is screwed, the connecting block 14 moves along the adjusting bolt 15 to drive the locking bolt 9 to move along the guide groove 8, so that the position of the motor 10 is adjusted, and the swinging head 16 can rotate around the cradle beam 13 by a certain angle in the adjusting process; meanwhile, when the locking bolt 9 is not screwed, the locking bolt 9 cannot move under the action of the gravity of the motor 10 because the position of the connecting block 14 on the adjusting bolt 15 is unchanged, so that the adjustment is more accurate and convenient. The axial locating part is prior art, and in this embodiment, the axial locating part is the cover barrel form, and rotatable the inlaying is located in the swing head 16, and the outer wall has protruding edge of round to be used for the axial spacing, and adjusting bolt 15 links firmly with the axial locating part.
Wherein, the connecting support lug 5 is positioned on the rear extension section, and the adjusting support lug 7 is positioned on the front extension section; so as to avoid interference of parts such as the adjusting support lug 7, the adjusting bolt 15, the connecting block 14 and the like on belt transmission;
a connecting line between the locking bolt 9 and the rotating shaft 6 passes through the axle center of the motor 10; namely, the motor 10 is connected with the cradle frame at two positions passing through the axis, so that the motor 10 is more stable and reliable to mount.
During implementation, the rotating shaft 6 can be composed of two fastening bolts arranged in bilateral symmetry, the axes of the fastening bolts are arranged along the left-right direction, the heads of the fastening bolts are positioned at the outer sides of the rear extension sections, and the rod parts of the fastening bolts penetrate through holes formed in the connecting support lugs 5 in a penetrating mode and are in threaded connection with the motor.
Therefore, when the two fastening bolts are loosened (without departing from the motor), the motor can be used as a rotating shaft, so that the motor can be conveniently adjusted, and after the motor is adjusted, the two fastening bolts are screwed, so that the stability of the motor can be further improved.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The tightness adjusting structure of the motorcycle motor transmission belt comprises a cradle frame and a motor, wherein the cradle frame comprises a cradle left beam and a cradle right beam which are arranged at left and right intervals, the cradle left beam and the cradle right beam respectively comprise a front extension section which inclines upwards and extends forwards, and the lower end of the front extension section is connected with a rear extension section which extends backwards; the motor is arranged on the cradle frame along the left-right direction and is positioned between the left cradle beam and the right cradle beam; the method is characterized in that: the lower part of the motor is rotatably connected between the two rear extension sections through a rotating shaft, the axis of the rotating shaft is arranged along the left-right direction, and two ends of the rotating shaft are respectively connected with the rear extension sections of the corresponding ends;
the upper portion of motor is connected respectively in two preceding extension sections through two locking bolt that bilateral symmetry set up, and locking bolt's axis sets up and the head is located the outside of preceding extension section along left right direction, and the pole portion activity of locking bolt passes and runs through some guiding grooves of seting up and with motor threaded connection on the preceding extension section so that fix the motor through the locking bolt of screwing, the motor so locking bolt can when the pivot rotates the guiding groove slides so that the fore-and-aft distance of motor is adjusted.
2. The tightness adjusting structure of the motorcycle motor transmission belt according to claim 1, characterized in that: a cradle beam is connected and arranged between the two front extension sections along the left-right direction.
3. The tightness adjusting structure of the motorcycle motor transmission belt according to claim 2, characterized in that: the cradle cross beam is positioned in front of or behind the locking bolt; a connecting block is arranged between any end of the motor and the front extension section of the corresponding end, the rod part of the locking bolt of the corresponding end movably penetrates through the connecting block and then is in threaded connection with the motor, an adjusting bolt vertical to the locking bolt is further arranged on the connecting block in a penetrating mode, the adjusting bolt is in threaded connection with the connecting block to form a lead screw structure, and the rod part of the adjusting bolt faces the cradle cross beam and is connected with the cradle cross beam through the swinging head; the swinging head is movably sleeved on the cradle cross beam, and the rod part of the adjusting bolt movably penetrates into the swinging head and limits the relative axial displacement of the swinging head and the swinging head through the axial limiting piece; when the adjusting bolt rotates, the motor can be driven by the connecting block and the locking bolt to rotate with the rotating shaft.
4. The tightness adjusting structure of the motorcycle motor transmission belt according to claim 3, characterized in that: the two front extension sections are respectively provided with an adjusting support lug extending backwards, the guide groove is arranged on the adjusting support lug, and the cradle cross beam is positioned in front of the locking bolt.
5. The tightness adjusting structure of the motorcycle motor transmission belt according to claim 4, characterized in that: the adjusting support lug and the front extension section are of an integral structure, a sinking groove is formed in the position, corresponding to the guide groove, of the outer side of the adjusting support lug, and the head of the locking bolt is accommodated in the sinking groove.
6. The tightness adjusting structure of the motorcycle motor transmission belt according to claim 5, characterized in that: a gasket is arranged between the head of the locking bolt and the bottom surface of the sinking groove, and the rod part of the locking bolt movably penetrates through the gasket.
7. The tightness adjusting structure of the motorcycle motor transmission belt according to claim 1, characterized in that: the two rear extension sections are respectively provided with an upward convex connecting lug, and two ends of the rotating shaft are respectively connected with the connecting lugs at the corresponding ends; the connecting support lug and the rear extension section are of an integrated structure.
8. The tightness adjusting structure of the motorcycle motor transmission belt according to claim 1, characterized in that: the rotating shaft comprises two fastening bolts which are arranged in a bilateral symmetry mode, the axes of the fastening bolts are arranged along the left and right directions, the heads of the fastening bolts are located on the outer sides of the rear extension sections, and the rod parts of the fastening bolts penetrate through holes formed in the rear extension sections in a movable mode and are in threaded connection with the motor.
9. The tightness adjusting structure of the motorcycle motor transmission belt according to claim 1, characterized in that: the locking bolt and the rotating shaft are arranged in a central symmetry mode with the axis of the motor.
10. The tightness adjusting structure of the motorcycle motor transmission belt according to claim 1, characterized in that: the guide groove is arc-shaped, the circle center of the arc-shaped circle is located on the axis of the rotating shaft, and the width of the guide groove is equal to the diameter of the rod part of the locking bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122429482.0U CN215475591U (en) | 2021-10-09 | 2021-10-09 | Tightness adjusting structure for transmission belt of motorcycle motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122429482.0U CN215475591U (en) | 2021-10-09 | 2021-10-09 | Tightness adjusting structure for transmission belt of motorcycle motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215475591U true CN215475591U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122429482.0U Active CN215475591U (en) | 2021-10-09 | 2021-10-09 | Tightness adjusting structure for transmission belt of motorcycle motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215475591U (en) |
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2021
- 2021-10-09 CN CN202122429482.0U patent/CN215475591U/en active Active
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