CN109773705B - Synchronous pulley's mounting fixture - Google Patents
Synchronous pulley's mounting fixture Download PDFInfo
- Publication number
- CN109773705B CN109773705B CN201910242590.1A CN201910242590A CN109773705B CN 109773705 B CN109773705 B CN 109773705B CN 201910242590 A CN201910242590 A CN 201910242590A CN 109773705 B CN109773705 B CN 109773705B
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- CN
- China
- Prior art keywords
- extension arm
- synchronous pulley
- adjusting belt
- rotating shaft
- belt
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 72
- 239000002184 metal Substances 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Pulleys (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses a mounting fixture of a synchronous pulley, which comprises a support frame and an adjusting belt; the support frame is Y-shaped and comprises a support part and a first extension arm and a second extension arm which are formed by extending outwards from one end of the support part, wherein the inner sides of the support part, the first extension arm and the second extension arm jointly form an arc-shaped inner wall which can be matched with the synchronous pulley, and a rotating shaft is arranged in the support part in a rotating way; the adjusting belt is a strip-shaped metal belt, one end of the adjusting belt is fixedly connected with the rotating shaft, the other end of the adjusting belt extends out of the second extension arm and is connected to the end part of the first extension arm, and the part of the adjusting belt extending out of the second extension arm and the arc-shaped inner wall form a closed space for accommodating the synchronous belt wheel; the rotating shaft is connected with a driving device, and the driving device is configured to drive the rotating shaft to rotate. The mounting fixture of the synchronous pulley is suitable for mounting synchronous pulleys with various diameters, has strong universality and is more convenient to use.
Description
Technical Field
The invention relates to the technical field of synchronous pulley installation, in particular to an installation clamp of a synchronous pulley.
Background
The synchronous belt wheel is used as a transmission part frequently adopted in the mechanical field, has the advantages of accurate and stable transmission, buffering and vibration reduction capability, low noise and high transmission efficiency, can be used for long-distance transmission, and is widely applied to the fields of automobiles, mechanical equipment, instruments, various precision machine tools and the like.
The common synchronous belt wheel is cylindrical, the rim of the common synchronous belt wheel is provided with teeth meshed with the synchronous belt, the synchronous belt wheel is mainly divided into two major categories of trapezoidal teeth and circular arc teeth according to the shape of the teeth, and the diameters of the synchronous belt wheels of each type are different according to different use occasions. For synchronous pulley installation with different tooth shapes and different diameters, special clamps matched with the synchronous pulley must be used, so that the types and the quantity of the special clamps are various, the problem that the occupied space for placing a plurality of special clamps is large can be caused, and when the synchronous pulley is used, each clamp cannot be universally used, so that an operator can install the synchronous pulley by performing matching work in advance, the preamble work is complicated, the work efficiency of the operator is seriously influenced, and the assembly time is prolonged.
Accordingly, it is desirable to provide a synchronous pulley mounting fixture that overcomes the above-described drawbacks.
Disclosure of Invention
The invention aims to provide a synchronous pulley mounting clamp which is suitable for synchronous pulley mounting of various diameters, has strong universality and is more convenient to use.
To achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a synchronous pulley's mounting fixture, includes support frame and adjustment belt;
the support frame is Y-shaped and comprises a support part, a first extension arm and a second extension arm, wherein the first extension arm and the second extension arm are formed by extending outwards from one end of the support part, the inner sides of the support part, the first extension arm and the second extension arm jointly form an arc-shaped inner wall which can be matched with a synchronous pulley, and a rotating shaft is arranged in the support part in a rotating mode;
the adjusting belt is a strip-shaped metal belt, one end of the adjusting belt is fixedly connected to the rotating shaft, the other end of the adjusting belt extends out of the second extension arm and is connected to the end part of the first extension arm, and the part of the adjusting belt extending out of the second extension arm and the arc-shaped inner wall form a closed space for accommodating the synchronous pulley together;
the rotating shaft is connected with a driving device, and the driving device is configured to drive the rotating shaft to rotate.
The supporting part is provided with a containing cavity at one side close to the second extension arm, the rotating shaft is arranged in the containing cavity, the second extension arm is internally provided with a channel from the end part of the second extension arm, the channel is communicated with the containing cavity, and the adjusting belt can extend out of the second extension arm or retract into the containing cavity through the channel.
The accommodating cavity is a circular cavity, and the channel is arranged along the tangential direction of the accommodating cavity.
Wherein the width of the channel is 1.2-1.5 times of the thickness of the adjusting belt.
The rotary shaft is cylindrical and is provided with a through groove along the radial direction of the rotary shaft in a penetrating way, and the adjusting belt is connected with the rotary shaft through a clamping hook after one end of the rotary shaft passes through the through groove.
One end of the clamping hook is connected to the rotating shaft, the other end of the clamping hook is suspended and is in a hook-shaped structure, a small hole is formed in the end portion of the adjusting belt, and the hook-shaped structure can penetrate through the small hole to be connected with the adjusting belt.
The support frame further comprises a fixing device, the fixing device comprises a bolt, a plunger and a nut, a through hole which is communicated with the channel is formed in the side portion of the support portion, the nut is fixedly arranged at the opening of the through hole, the front end of the bolt penetrates through the nut and can extend into the through hole, the plunger is movably arranged in the through hole and located at the front end of the bolt, and the plunger can be abutted to the adjusting belt passing through the channel by rotating the bolt.
The adjusting belt is fixedly connected with the first extension arm in a welding or riveting mode.
The mounting fixture further comprises a clamping device, the clamping device is connected to the inner side of the first extension arm or the inner side of the second extension arm, and the clamping device can be matched with a tooth slot of the synchronous pulley.
The clamping device comprises a buckle connected with the first extension arm or the second extension arm in a detachable mode and a positioning column connected with the buckle in an integrated mode, and the appearance of the positioning column is matched with the tooth slot of the synchronous pulley.
The beneficial effects of the invention are as follows: according to the invention, the inner sides of the supporting part, the first extension arm and the second extension arm jointly form the arc-shaped inner wall which can be matched with the synchronous pulley, the rotating shaft is rotatably arranged in the supporting part, one end of the adjusting belt is fixedly connected to the rotating shaft, the other end of the adjusting belt extends out of the second extension arm and is connected to the end part of the first extension arm, the part of the adjusting belt extending out of the second extension arm and the arc-shaped inner wall jointly form an enclosed space for accommodating the synchronous pulley, the rotating shaft is driven to rotate by the driving device, the adjusting belt is wound on the rotating shaft or is loosened from the rotating shaft, the length of the metal belt extending out of the first extension arm is further adjusted, and therefore the size of the enclosed space is adjusted to be matched with the synchronous pulleys with different sizes to be installed in, the purpose of fixing the synchronous pulley is finally achieved.
Drawings
Fig. 1 is a schematic structural view of a synchronous pulley mounting jig of the present invention;
FIG. 2 is a schematic view of the mounting fixture of the synchronous pulley of FIG. 1 at another angle;
fig. 3 is a schematic side view of a mounting jig of the synchronous pulley in fig. 2;
FIG. 4 is a schematic partial cross-sectional view in the A-A direction of the synchronous pulley mounting fixture of FIG. 3;
fig. 5 is an enlarged partial schematic view of the mounting fixture of the synchronous pulley of fig. 4 at B;
FIG. 6 is a cross-sectional view of one construction of the detent mechanism of FIG. 4;
FIG. 7 is a cross-sectional view of another construction of the detent mechanism of FIG. 4;
fig. 8 is a cross-sectional view of still another construction of the detent mechanism of fig. 4.
In the figure:
1-a supporting frame; 11-a support; 12-a first extension arm; 13-a second extension arm; 14-a rotation axis; 141-through grooves; 15-a housing cavity; 16-a fixing device; 161-bolts; 162-plunger; 163-nut; 17-channel;
2-an adjusting belt;
3-clamping device; 31-a buckle; 32-positioning columns;
4-synchronous pulleys.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1, the installation fixture of the synchronous pulley provided by the invention is used for installing and fixing the synchronous pulley 4 and comprises a support frame 1, an elongated adjusting belt 2 and a clamping device 3.
As shown in fig. 2 to 4, the support frame 1 is Y-shaped, and includes a support portion 11 and a first extension arm 12 and a second extension arm 13 formed by extending from one end of the support portion 11, wherein the first extension arm 12 and the second extension arm 13 extend obliquely towards the upper left corner and the upper right corner respectively, the first extension arm 12, the second extension arm 13 and the support portion 11 together form a Y-shaped structure, and the inner sides of the support portion 11, the first extension arm 12 and the second extension arm 13 together form an arc inner wall capable of being matched with the synchronous pulley 4, so as to be matched with the shape of the synchronous pulley 4, thereby well supporting and fixing the synchronous pulley 4.
The supporting part 11 is provided with a containing cavity 15 at one side close to the second extension arm 13; correspondingly, the second extension arm 13 is provided with a channel 17 from the end inwards, and the channel 17 is communicated with the accommodating cavity 15 for the passage of the adjusting belt 2.
A rotating shaft 14 is rotatably arranged in the accommodating cavity 15, one end of the adjusting belt 2 is fixedly connected to the rotating shaft 14, the other end of the adjusting belt 2 extends out from the inside of the second extension arm 13 and is connected to the end of the first extension arm 12, and the adjusting belt 2 and the first extension arm 12 are fixedly connected in a welding or riveting mode.
The portion of the adjusting belt 2 extending beyond the second extension arm 13 forms together with the arcuate inner wall an enclosed space for accommodating the timing pulley 4. In actual use, the synchronous pulley 4 is arranged in the closed space, one side of the synchronous pulley is matched with the arc inner wall, and the other side of the synchronous pulley is matched with the adjusting belt 2.
In order to realize the stable connection between the adjusting belt 2 and the rotating shaft 14, the rotating shaft 14 is cylindrical and is provided with a through groove 141 along the radial direction, and one end of the adjusting belt 2 connected to the rotating shaft 14 passes through the through groove 141 and is clamped to the rotating shaft 14 through a clamping hook. Specifically, one end of the hook is connected to the rotating shaft 14, the other end is suspended and has a hook structure, the end of the adjusting belt 2 is provided with a small hole, and the hook structure can pass through the small hole to be connected with the adjusting belt 2. In this way, not only the adjusting belt 2 can be fixed, but also the adjusting belt 2 can be detached, and when the adjusting belt 2 needs to be replaced, the hook-shaped structure is separated from the small hole, so that the operation is very convenient.
The rotation shaft 14 is connected to a driving device configured to drive the rotation shaft 14 to rotate, thereby enabling control of the extension of the adjustment strap 2 out of the second extension arm 13 or retraction of the housing cavity 15 via the channel 17. Specifically, when the driving device drives the rotation shaft 14 to rotate in one direction, the adjusting belt 2 wound on the rotation shaft 14 is loosened, and at this time, the length of the adjusting belt 2 extending out of the second extension arm 13 is lengthened by manually pulling the part of the adjusting belt 2 extending out of the second extension arm 13, so that the size of the enclosed space is enlarged, and the synchronous pulley 4 is conveniently placed in the enclosed space; when the driving device drives the rotation shaft 14 to rotate towards the other direction, the part of the adjusting belt 2 is wound on the rotation shaft 14, so that the length of the adjusting belt 2 extending out of the second extension arm 13 is shortened, the size of the enclosed space is reduced until the enclosed space is adapted to the synchronous pulley 4, and finally the synchronous pulley 4 is fixed together with the first extension arm 12, the second extension arm 13 and the supporting part 11 through the adjusting belt 2. Preferably, the driving means is a stepper motor.
In this embodiment, the accommodating cavity 15 is a circular cavity, and the channel 17 is disposed along a tangential direction of the accommodating cavity 15. Thereby being capable of conveniently adjusting the telescopic movement of the belt 2, improving the smoothness of the movement process and avoiding the clamping and folding. In order to avoid a stable directionality of the adjusting belt 2 during movement in the channel 17, the width of the channel 17 is 1.2-1.5 times, preferably 1.2, 1.25, 1.3, 1.35, 1.4, 1.45, 1.5 times, etc., the thickness of the adjusting belt 2, which ensures that the adjusting belt 2 cannot roll over during movement, avoiding twisting.
As shown in fig. 4, after fixing the timing pulley 4, in order to avoid the shaking of the adjustment belt 2, the support frame 1 further includes a fixing device 16 for abutting against the adjustment belt 2. Specifically, as shown in fig. 5, the fixing device 16 includes a bolt 161, a plunger 162 and a nut 163, a through hole communicating with the channel 17 is provided at a side portion of the supporting portion 11, the nut 163 is fixedly provided at an opening of the through hole, a front end of the bolt 161 passes through the nut 163 and can extend into the through hole, the plunger 162 is movably provided in the through hole and located at a front end of the bolt 161, the plunger 162 can be abutted against the adjusting belt 2 passing through the channel 17 by rotating the bolt 161, and a degree of the abutted tightening can be adjusted by cooperation of the bolt 161 and the nut 163, so that the fixing device is flexible and controllable.
In this embodiment, the locking bolt 161 allows the plunger 162 to firmly press the adjustment strap 2 against the inner wall of the channel 17, preventing it from sliding. When the adjustment belt 2 is not required to be held, the plunger 162 releases the external force and releases the holding with the adjustment belt 2, and at this time, the smooth movement of the adjustment belt 2 is prevented because the plunger 162 is made of polytetrafluoroethylene and has a low friction coefficient, and excessive friction resistance to the adjustment belt 2 can be prevented.
As shown in fig. 4, the mounting fixture of the present invention further includes a clamping device 3, wherein the clamping device 3 is connected to the inner side of the first extension arm 12 or the second extension arm 13, and the clamping device 3 can be adapted to the tooth slot of the synchronous pulley 4. Specifically, as shown in fig. 6 to 8, the detent device 3 includes a buckle 31 detachably connected to the first extension arm 12 or the second extension arm 13, and a positioning post 32 integrally connected to the buckle 31, and the positioning post 32 has a shape adapted to a tooth slot of the synchronous pulley 4 to limit rotation of the synchronous pulley 4. Further, the positioning column 32 is square, arc-shaped or trapezoid, the positioning column 32 with different shapes can be matched with tooth grooves of the corresponding synchronous pulley 4, the synchronous pulley 4 can be better fixed, the buckle 31 is directly sleeved on the first extension arm 12 or the second extension arm 13, detachable connection is achieved, and replacement is convenient.
As shown in fig. 1 and 2, the mounting fixture of the present invention is provided with a handle at one end of the supporting portion 11 remote from the first extension arm 12 and the second extension arm 13 for easy grip. And triangular reinforcing plates are provided on the upper and lower surfaces of the supporting portion for reinforcing the strength of the supporting portion 11.
In summary, when the installation fixture of the invention is used, the adjusting belt 2 is stretched, the synchronous pulley 4 is placed on the inner side of the Y-shaped structure and is matched with the arc-shaped inner wall, the clamping device 3 is matched with the tooth slot of the synchronous pulley 4, and the part of the adjusting belt 2 extending out of the second extension arm 13 is matched with the synchronous pulley 4, so that the clamping of the synchronous pulley 4 can be completed. In addition, the user can hold and take the handle part, and the movement is very convenient. And when in use, through the cooperation of the driving device, the user only needs to pull the adjusting belt 2 to enable the part of the adjusting belt extending out of the second extension arm 13 to be lengthened or shortened, and then the adjusting belt can be conveniently placed into the synchronous belt pulley or the synchronous belt pulley is tensioned, so that the adjusting belt is more suitable for synchronous belt pulleys of various specifications, has wide application range, does not need to be provided with more clamps because of the diversified specifications of the synchronous belt pulley, thereby reducing the cost and improving the installation efficiency.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (8)
1. The installation clamp of the synchronous pulley is characterized by comprising a support frame (1) and an adjusting belt (2);
the support frame (1) is Y-shaped and comprises a support part (11), a first extension arm (12) and a second extension arm (13) which are formed by extending outwards from one end of the support part (11), wherein the inner sides of the support part (11), the first extension arm (12) and the second extension arm (13) jointly form an arc-shaped inner wall which can be matched with the synchronous pulley (4), and a rotating shaft (14) is arranged in the support part (11) in a rotating way;
the adjusting belt (2) is a strip-shaped metal belt, one end of the adjusting belt (2) is fixedly connected with the rotating shaft (14), the other end of the adjusting belt (2) extends out of the second extension arm (13) and is connected to the end part of the first extension arm (12), and the part of the adjusting belt (2) extending out of the second extension arm (13) and the arc-shaped inner wall form a closed space for accommodating the synchronous pulley (4) together;
the rotating shaft (14) is connected with a driving device, and the driving device is configured to drive the rotating shaft (14) to rotate;
the adjusting belt (2) is fixedly connected with the first extension arm (12) in a welding or riveting mode;
the mounting fixture further comprises a clamping device (3), the clamping device (3) is connected to the inner side of the first extension arm (12) or the inner side of the second extension arm (13), and the clamping device (3) can be matched with a tooth slot of the synchronous pulley (4).
2. The synchronous pulley mounting fixture according to claim 1, characterized in that the supporting portion (11) is provided with a receiving cavity (15) at a side close to the second extension arm (13), the rotating shaft (14) is arranged in the receiving cavity (15), the second extension arm (13) is internally provided with a channel (17) from the end portion of the second extension arm, the channel (17) is communicated with the receiving cavity (15), and the adjusting belt (2) can extend out of the second extension arm (13) or retract into the receiving cavity (15) through the channel (17).
3. The synchronous pulley mounting clamp according to claim 2, characterized in that the receiving cavity (15) is a circular cavity, and the channel (17) is arranged along a tangential direction of the receiving cavity (15).
4. A synchronous pulley mounting clamp according to claim 2, characterized in that the width of the channel (17) is 1.2-1.5 times the thickness of the adjusting belt (2).
5. The synchronous pulley mounting fixture according to claim 2, wherein the rotating shaft (14) is cylindrical and is provided with a through groove (141) along the radial direction thereof, and the adjusting belt (2) is connected to one end of the rotating shaft (14) and is clamped to the rotating shaft (14) through a clamping hook after passing through the through groove (141).
6. The synchronous pulley mounting fixture according to claim 5, characterized in that one end of the hook is connected to the rotating shaft (14), the other end is suspended and has a hook-shaped structure, and the end of the adjusting belt (2) is provided with a small hole, and the hook-shaped structure can pass through the small hole to be connected with the adjusting belt (2).
7. The synchronous pulley mounting fixture according to claim 2, wherein the supporting frame (1) further comprises a fixing device (16), the fixing device (16) comprises a bolt (161), a plunger (162) and a nut (163), a through hole which is communicated with the channel (17) is formed in the side portion of the supporting portion (11), the nut (163) is fixedly arranged at the opening of the through hole, the front end of the bolt (161) penetrates through the nut (163) and can extend into the through hole, the plunger (162) is movably arranged in the through hole and is positioned at the front end of the bolt (161), and the plunger (162) can be abutted against the adjusting belt (2) passing through the channel (17) by rotating the bolt (161).
8. The synchronous pulley mounting fixture according to claim 1, characterized in that the clamping device (3) comprises a buckle (31) detachably connected with the first extension arm (12) or the second extension arm (13) and a positioning column (32) integrally connected with the buckle (31), and the shape of the positioning column (32) is matched with the tooth slot of the synchronous pulley (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910242590.1A CN109773705B (en) | 2019-03-28 | 2019-03-28 | Synchronous pulley's mounting fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910242590.1A CN109773705B (en) | 2019-03-28 | 2019-03-28 | Synchronous pulley's mounting fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109773705A CN109773705A (en) | 2019-05-21 |
| CN109773705B true CN109773705B (en) | 2024-02-06 |
Family
ID=66490767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910242590.1A Active CN109773705B (en) | 2019-03-28 | 2019-03-28 | Synchronous pulley's mounting fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109773705B (en) |
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