CN210739317U - Micro-arc flat belt pulley - Google Patents
Micro-arc flat belt pulley Download PDFInfo
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- CN210739317U CN210739317U CN201921794137.3U CN201921794137U CN210739317U CN 210739317 U CN210739317 U CN 210739317U CN 201921794137 U CN201921794137 U CN 201921794137U CN 210739317 U CN210739317 U CN 210739317U
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Abstract
A micro-arc flat belt pulley comprises a pulley body, a connecting hole arranged in the center of the pulley body and an arc-shaped bulge arranged on the outer peripheral surface of the pulley body, wherein a plurality of mounting grooves which are uniformly distributed in the circumferential direction are formed in the inner wall of the connecting hole; a plurality of guide rods which are uniformly distributed in the circumferential direction are arranged on the groove wall of one side of the mounting groove, which is adjacent to the arc-shaped bulge; a sliding plate matched with the installation groove is arranged in the installation groove, and the sliding plate is attached to the groove wall of one side, adjacent to the arc-shaped bulge, of the installation groove; the sliding plate is provided with a plurality of guide holes corresponding to the positions of the guide rods, and the guide rods penetrate through the corresponding guide holes; a plurality of jacks corresponding to the mounting grooves are arranged outside the hole openings on the right side of the connecting holes; and a slot opposite to the jack is arranged on the left slot wall of the mounting slot. The utility model discloses a micro arc shape flat belt pulley can effectively avoid the belt to drop from the belt pulley and lead to the condition of meeting accident to the belt tensioning automatically when the belt is not hard up.
Description
Technical Field
The utility model relates to a belt pulley, especially a micro-arc shape flat belt pulley.
Background
The micro-arc flat belt pulley is a belt pulley with an outward arc-shaped convex outer peripheral surface, and is different from belt pulleys with other outer peripheral surfaces provided with clamping teeth or annular clamping grooves, the micro-arc flat belt pulley is directly connected with a belt through an arc-shaped bulge of the micro-arc flat belt pulley, only the inner wall of the belt is provided with an arc-shaped caulking groove matched with the arc-shaped bulge, and the micro-arc flat belt pulley can ensure that the belt cannot fall off from the belt pulley when the belt pulley rotates.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a micro arc shape flat belt pulley, it can be automatic when the belt is not hard up carry out the tensioning to the belt, effectively avoid the belt to drop from the belt pulley and lead to the condition of meeting accident.
The utility model provides a technical scheme that above-mentioned technical problem adopted does:
the utility model discloses a micro arc shape flat belt pulley, it is protruding including the wheel body, locate the connecting hole at wheel body center and the arcuation of locating the wheel body outer peripheral face, its characterized in that: the inner wall of the connecting hole is provided with a plurality of mounting grooves which are uniformly distributed in the circumferential direction; a plurality of guide rods which are uniformly distributed in the circumferential direction are arranged on the groove wall of one side of the mounting groove, which is adjacent to the arc-shaped bulge; a sliding plate matched with the installation groove is arranged in the installation groove, and the sliding plate is attached to the groove wall of one side, adjacent to the arc-shaped bulge, of the installation groove; the sliding plate is provided with a plurality of guide holes corresponding to the positions of the guide rods, and the guide rods penetrate through the corresponding guide holes; a plurality of jacks corresponding to the mounting grooves are arranged outside the hole openings on the right side of the connecting holes; the left side groove wall of the mounting groove is provided with a slot opposite to the jack, and the slot and the jack are both adjacent to the notch of the mounting groove; the left end of a cover plate sequentially penetrates through the jack and the mounting groove and is inserted into the jack, and the cover plate shields and seals the notch of the mounting groove; a resetting device is arranged between the cover plate and the sliding plate; the right end of the cover plate is provided with a fastening plate which is tightly attached to the side wall of the right side of the wheel body; the fastening plate is fixedly connected with the wheel body through a fastening device; the outer wall of the arc-shaped bulge is provided with a plurality of tensioning grooves corresponding to the mounting grooves in position; the tensioning groove is communicated with the mounting groove through a telescopic hole; a telescopic rod is arranged at the center of the side wall of the sliding plate, which is adjacent to the arc-shaped bulge; one end of the telescopic rod sequentially penetrates through the telescopic hole and the tensioning groove and is connected with a tensioning block matched with the tensioning groove, and a tensioning space is formed between the tensioning block and the tensioning groove.
The tensioning block is in an arc shape, and the surface radian of the tensioning block is the same as that of the arc-shaped bulge.
The reset device comprises a spring sleeved outside the guide rod; the upper end of the spring is pressed against the sliding plate, and the lower end of the spring is pressed against the cover plate; one end of the guide rod, which is adjacent to the connecting hole, is contacted with the cover plate.
The fastening device comprises a fastening hole arranged on the fastening plate; a screw hole coaxial with the fastening hole is formed in the side wall of the right side of the wheel body; a screw passes through the fastening hole and is in threaded connection with the screw hole, and the fastening plate and the wheel body are fixed through the screw.
A plurality of spherical caulking grooves which are uniformly distributed in the circumferential direction are formed in the inner wall of the guide hole; a lubricating ball matched with the spherical caulking groove is arranged in the spherical caulking groove; one end of the lubricating ball protrudes out of the spherical caulking groove and is attached to the outer wall of the guide rod.
The utility model has the advantages that:
compared with the prior art, when the belt is loosened by adopting the micro-arc flat belt pulley with the structure of the utility model, the elastic force of the spring can push the sliding plate to move towards the arc-shaped bulge direction, so that the tensioning block is ejected out of the tensioning groove through the telescopic rod, and the tensioning block which is originally loosened can support the belt outwards, so that the belt is kept in the tensioning state again, the larger the loosening degree of the belt is, the larger the stroke of pushing the sliding plate by the elastic force of the spring is, the larger the outward ejection degree of the tensioning block is, so that the belt is always ejected outwards by the tensioning block no matter how the belt is loosened, the belt is always kept in the tensioning state, the condition that the belt falls off from the belt pulley to cause accidents due to the loosening of the belt is effectively avoided, and the tensioning blocks are circumferentially and uniformly distributed on the outer ring of the belt pulley, therefore, the belt can be ensured to be, the stability of the belt when tensioning is guaranteed.
Drawings
FIG. 1 is a schematic structural view of a micro-arc flat belt pulley of the present invention;
fig. 2 is an enlarged view of a portion a of fig. 1.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
referring to fig. 1 and 2, the present invention provides a micro-arc flat belt pulley, which comprises a pulley body 1, a connecting hole 2 formed in the center of the pulley body 1, and an arc-shaped protrusion 3 formed on the outer circumferential surface of the pulley body 1, wherein a plurality of mounting grooves 4 are uniformly distributed on the inner wall of the connecting hole 2; a plurality of guide rods 5 which are uniformly distributed in the circumferential direction are arranged on the groove wall of one side of the mounting groove 4 adjacent to the arc-shaped protrusion 3; a sliding plate 6 matched with the installation groove 4 is arranged in the installation groove 4, and the sliding plate 6 is attached to the groove wall of one side, adjacent to the arc-shaped protrusion 3, of the installation groove 4; the sliding plate 6 is provided with a plurality of guide holes 7 corresponding to the positions of the guide rods 5, and the guide rods 5 penetrate through the corresponding guide holes 7; a plurality of jacks 8 corresponding to the mounting grooves 4 are arranged outside the right side hole openings of the connecting holes 2; a slot 9 opposite to the jack 8 is arranged on the left side slot wall of the mounting groove 4, and the slot 9 and the jack 8 are both adjacent to the notch of the mounting groove 4; the left end of a cover plate 10 sequentially penetrates through the jack 8 and the mounting groove 4 and is inserted into the jack 8, and the cover plate 10 shields and seals the notch of the mounting groove 4; a resetting device is arranged between the cover plate 10 and the sliding plate 6; the right end of the cover plate 10 is provided with a fastening plate 11 which is tightly attached to the side wall of the right side of the wheel body 1; the fastening plate 11 is fixedly connected with the wheel body 1 through a fastening device; the outer wall of the arc-shaped bulge 3 is provided with a plurality of tensioning grooves 12 corresponding to the positions of the mounting grooves 4; the tensioning groove 12 is communicated with the mounting groove 4 through a telescopic hole 13; a telescopic rod 14 is arranged at the center of the side wall of the sliding plate 6 adjacent to the arc-shaped bulge 3; one end of the telescopic rod 14 sequentially penetrates through the telescopic hole 13 and the tensioning groove 12 and is connected with a tensioning block 15 matched with the tensioning groove 12, and a tensioning distance 16 is formed between the tensioning block 15 and the tensioning groove 12.
The tensioning block 15 is arc-shaped, and the surface radian of the tensioning block 15 is the same as that of the arc-shaped protrusion 3.
The reset device comprises a spring 17 sleeved outside the guide rod 5; the upper end of the spring 17 is pressed against the sliding plate 6, and the lower end of the spring 17 is pressed against the cover plate 10; one end of the guide bar 5 adjacent to the connection hole 2 is in contact with the cover plate 10.
The fastening means comprises a fastening hole 18 provided in the fastening plate 11; a screw hole 19 coaxial with the fastening hole 18 is formed in the side wall of the right side of the wheel body 1; a screw 20 is screwed into the screw hole 19 through the fastening hole 18, and the fastening plate 11 is fixed to the wheel body 1 through the screw 20.
A plurality of spherical caulking grooves 21 which are uniformly distributed in the circumferential direction are formed in the inner wall of the guide hole 7; a lubricating ball 22 matched with the spherical caulking groove 21 is arranged in the spherical caulking groove; one end of the lubricating ball 22 protrudes out of the spherical caulking groove 21 and is attached to the outer wall of the guide rod 5.
The utility model discloses a use method as follows:
when the micro-arc flat belt pulley is used, the belt can be directly sleeved outside the belt pulley, the arc-shaped bulge 3 is embedded in the arc-shaped caulking groove on the inner wall of the belt, the belt is simultaneously kept in a tensioned state, under the action of the tensioning force, the tensioning block 15 is squeezed to the direction of the tensioning groove 12 by the groove wall of the arc-shaped caulking groove, when the tensioning block 15 gradually approaches the tensioning groove 12, the telescopic rod 14 is retracted into the telescopic hole 13, the telescopic rod 14 drives the sliding plate 6 to move towards the cover plate 10, at the moment, the distance between the sliding plate 6 and the cover plate 10 is continuously reduced, the spring 17 positioned between the sliding plate 6 and the cover plate 10 is continuously compressed, the elastic force generated by the spring 17 is gradually enhanced, when the tensioning block 15 is embedded in the tensioning groove 12, because the surface radian of the tensioning block 15 is the same as the surface radian of the arc-shaped bulge 3, the surface of the tensioning block 15 is also, and the situation that the transmission is unstable due to the fact that the arc-shaped caulking groove and the arc-shaped protrusion 3 of the belt cannot be tightly attached when the belt is in a tensioning state can be effectively avoided.
When the belt is loosened, the elastic force of the spring 17 can push the sliding plate 6 to move towards the arc-shaped bulge 3, so that the tensioning block 15 is ejected out of the tensioning groove 12 through the telescopic rod 14, at the moment, the originally loosened tensioning block 15 can support the belt outwards, so that the belt is kept in a tensioned state again, the larger the loosened degree of the belt is, the larger the stroke of the elastic force of the spring 17 for pushing the sliding plate 6 is, the larger the outward ejection degree of the tensioning block 15 is, the belt is ensured to be always ejected outwards by the tensioning block 15 no matter how the loosened degree of the belt is, the belt is ensured to be always in a tensioned state, the accidental situation caused by the belt falling off from the belt pulley due to the loosening is effectively avoided, and the tensioning blocks 15 are circumferentially and uniformly distributed on the outer ring of the belt pulley, so that the belt can be tensioned stably under stress, and the stability of the belt tensioning is ensured, and the surface radian of the tensioning block 15 is the same as that of the arc-shaped bulge 3, the surface of the tensioning block 15 can be firmly attached to the wall of the arc-shaped caulking groove of the belt, the radian of the tensioning block 15 can form a barrier, and the situation that the belt tensioned by the tensioning block 15 falls off from the tensioning block 15 is effectively prevented.
Fastening device is including locating fastening hole 18 on mounting plate 11, be equipped with on the lateral wall of wheel body 1 right side with the coaxial screw 19 of fastening hole 18, a screw 20 passes fastening hole 18 spiro union in screw 19, it is fixed mutually through screw 20 between mounting plate 11 and the wheel body 1, when needing to change spring 17, the staff can screw out screw 20 earlier, then hold mounting plate 11 with apron 10 from slot 9, mounting groove 4, in proper order take out in the jack 8 can, after apron 10 shifts out, the staff alright change spring 17 through the notch of mounting groove 4.
The inner wall of the guide hole 7 is provided with a plurality of spherical caulking grooves 21 which are uniformly distributed on the circumference, the spherical caulking grooves 21 are internally provided with lubricating balls 22 matched with the spherical caulking grooves, one ends of the lubricating balls 22 protrude out of the spherical caulking grooves 21 and are attached to the outer wall of the guide rod 5, the lubricating balls 22 can roll through self and the friction of the outer wall of the guide rod 5 when the sliding plate 6 moves, the rolling lubricating balls 22 can effectively improve the smoothness of the sliding plate 6 when the sliding plate 6 moves, thereby effectively improving the tensioning efficiency of the tensioning block 15, and the belt can be tensioned at the first time when the belt is sensed to be loosened.
Claims (5)
1. The utility model provides a micro arc shape flat belt pulley, includes the wheel body, locates the connecting hole at wheel body center and locates the arcuation arch of wheel body outer peripheral face, its characterized in that: the inner wall of the connecting hole is provided with a plurality of mounting grooves which are uniformly distributed in the circumferential direction; a plurality of guide rods which are uniformly distributed in the circumferential direction are arranged on the groove wall of one side of the mounting groove, which is adjacent to the arc-shaped bulge; a sliding plate matched with the installation groove is arranged in the installation groove, and the sliding plate is attached to the groove wall of one side, adjacent to the arc-shaped bulge, of the installation groove; the sliding plate is provided with a plurality of guide holes corresponding to the positions of the guide rods, and the guide rods penetrate through the corresponding guide holes; a plurality of jacks corresponding to the mounting grooves are arranged outside the hole openings on the right side of the connecting holes; the left side groove wall of the mounting groove is provided with a slot opposite to the jack, and the slot and the jack are both adjacent to the notch of the mounting groove; the left end of a cover plate sequentially penetrates through the jack and the mounting groove and is inserted into the jack, and the cover plate shields and seals the notch of the mounting groove; a resetting device is arranged between the cover plate and the sliding plate; the right end of the cover plate is provided with a fastening plate which is tightly attached to the side wall of the right side of the wheel body; the fastening plate is fixedly connected with the wheel body through a fastening device; the outer wall of the arc-shaped bulge is provided with a plurality of tensioning grooves corresponding to the mounting grooves in position; the tensioning groove is communicated with the mounting groove through a telescopic hole; a telescopic rod is arranged at the center of the side wall of the sliding plate, which is adjacent to the arc-shaped bulge; one end of the telescopic rod sequentially penetrates through the telescopic hole and the tensioning groove and is connected with a tensioning block matched with the tensioning groove, and a tensioning space is formed between the tensioning block and the tensioning groove.
2. The micro-arc flat pulley according to claim 1, wherein: the tensioning block is in an arc shape, and the surface radian of the tensioning block is the same as that of the arc-shaped bulge.
3. The micro-arc flat pulley according to claim 1, wherein: the reset device comprises a spring sleeved outside the guide rod; the upper end of the spring is pressed against the sliding plate, and the lower end of the spring is pressed against the cover plate; one end of the guide rod, which is adjacent to the connecting hole, is contacted with the cover plate.
4. The micro-arc flat pulley according to claim 1, wherein: the fastening device comprises a fastening hole arranged on the fastening plate; a screw hole coaxial with the fastening hole is formed in the side wall of the right side of the wheel body; a screw passes through the fastening hole and is in threaded connection with the screw hole, and the fastening plate and the wheel body are fixed through the screw.
5. The micro-arc flat pulley according to claim 1, wherein: a plurality of spherical caulking grooves which are uniformly distributed in the circumferential direction are formed in the inner wall of the guide hole; a lubricating ball matched with the spherical caulking groove is arranged in the spherical caulking groove; one end of the lubricating ball protrudes out of the spherical caulking groove and is attached to the outer wall of the guide rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921794137.3U CN210739317U (en) | 2019-10-24 | 2019-10-24 | Micro-arc flat belt pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921794137.3U CN210739317U (en) | 2019-10-24 | 2019-10-24 | Micro-arc flat belt pulley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210739317U true CN210739317U (en) | 2020-06-12 |
Family
ID=71011137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921794137.3U Active CN210739317U (en) | 2019-10-24 | 2019-10-24 | Micro-arc flat belt pulley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210739317U (en) |
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2019
- 2019-10-24 CN CN201921794137.3U patent/CN210739317U/en active Active
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