CN107795647B - Overload protection type combined synchronous belt pulley for synchronous belt transmission - Google Patents
Overload protection type combined synchronous belt pulley for synchronous belt transmission Download PDFInfo
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- CN107795647B CN107795647B CN201711198590.3A CN201711198590A CN107795647B CN 107795647 B CN107795647 B CN 107795647B CN 201711198590 A CN201711198590 A CN 201711198590A CN 107795647 B CN107795647 B CN 107795647B
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- synchronous pulley
- guide cylinder
- tightening
- hub
- synchronous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/22—Belt, rope, or chain shifters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses an overload protection type combined synchronous pulley for synchronous belt transmission, wherein an upper guide cylinder, a lower guide cylinder, a left guide cylinder and a right guide cylinder are processed in a hub of the synchronous pulley along the radial direction, a conical hole is processed on the hub of the synchronous pulley along the axial central line direction, an upper puller column is installed in the upper guide cylinder, a lower puller column is installed in the lower guide cylinder, a left puller column is installed in the left guide cylinder, a right puller column is installed in the right guide cylinder, a friction plate is welded at the top end of the upper puller column, the bottom end of the lower puller column, the left end of the left puller column and the right end of the right puller column, a synchronous pulley gear sleeve is sleeved on the hub of the synchronous pulley, and the driving of the synchronous pulley gear sleeve is realized by the friction force between the inner wall of the synchronous pulley gear sleeve and the friction plate, a jacking cone is processed on the synchronous pulley driving shaft, and the taper of the jacking cone is the same as that of a tapered hole in a synchronous pulley hub; the invention has scientific and reasonable design, simple structure and convenient use.
Description
Technical Field
The invention relates to an overload protection type combined synchronous belt wheel for synchronous belt transmission, and belongs to the technical field of synchronous belt wheels.
Background
Synchronous belt drives, i.e. meshing belt drives, transmit motion by meshing equally spaced transverse teeth on the inner surface of the drive belt with corresponding tooth grooves on the pulley. Compared with the friction belt transmission, the belt wheel and the transmission belt of the synchronous belt transmission do not slide relatively, and the strict transmission ratio can be ensured. The synchronous belt transmission has the advantages of belt transmission, chain transmission and gear transmission, and has no relative sliding between the belt and the belt wheel and can ensure accurate transmission ratio because the belt and the belt wheel are engaged to transmit motion and power. The linear speed can reach 50m/s, the transmission ratio can reach 10, and the efficiency can reach 98%. The transmission noise is less than that of belt transmission, chain transmission and gear transmission, the wear resistance is good, oil lubrication is not needed, and the service life is longer than that of a friction belt.
The existing synchronous belt wheel mostly adopts an integral structure, the synchronous belt wheel drives the synchronous belt transmission process, if the load is too large, the slipping phenomenon often occurs between the synchronous belt and the synchronous belt wheel, the abrasion of the synchronous belt is caused, the burning of the synchronous belt can be caused under the serious condition, and the safety production accident is caused.
Disclosure of Invention
Aiming at the problems, the technical problem to be solved by the invention is to provide an overload protection type combined synchronous pulley for synchronous belt transmission, which adopts the technical scheme that an upper guide cylinder, a lower guide cylinder, a left guide cylinder and a right guide cylinder are machined in a hub of the synchronous pulley along the radial direction, a conical hole is machined in the hub of the synchronous pulley along the axial central line direction and is communicated with the upper guide cylinder, the lower guide cylinder, the left guide cylinder and the right guide cylinder, an upper tightening column is installed in the upper guide cylinder, a lower tightening column is installed in the lower guide cylinder, a left tightening column is installed in the left guide cylinder, a right tightening column is installed in the right guide cylinder, a friction plate is welded at the top end of the upper tightening column, the bottom end of the lower tightening column, the left end of the left tightening column and the right end of the right tightening column are designed, a gear sleeve of the synchronous pulley is sleeved on the hub of the synchronous pulley, and the overload protection in the transmission process of the combined synchronous pulley is realized by controlling the friction force between the gear sleeve and the friction plate, the device has the advantages of scientific and reasonable design, simple structure and convenient use.
The invention relates to an overload protection type combined synchronous pulley for synchronous belt transmission, which structurally comprises: synchronous pulley wheel tooth cover, synchronous pulley wheel hub, go up tight post in top, down tight post in top, left tight post in top, right tight post in top, friction disc, spherical roller, synchronous pulley drive shaft, tensioning nut, synchronous pulley wheel hub in along the radial direction processing go up guide cylinder, down guide cylinder, left guide cylinder, right guide cylinder, synchronous pulley wheel hub go up along axial central line direction processing bell mouth, bell mouth and last guide cylinder, down guide cylinder, left guide cylinder, right guide cylinder intercommunication, last tight post in top install in the guide cylinder, down tight post in top guide cylinder, left tight post is installed in left guide cylinder, right tight post in top guide cylinder, the friction disc weld on the top of last tight post in top, the bottom of tight post in top, the left end of left tight post and the right-hand member of right tight post in top down, synchronous pulley wheel tooth cover on synchronous pulley wheel hub, the drive of hold-in range wheel gear cover is realized to frictional force between hold-in range wheel gear cover inner wall and the friction disc, the tight cone in last processing top of hold-in range wheel drive shaft, the tapering of the tight cone in top is the same with the tapering of the bell mouth on the hold-in range wheel hub, the hold-in range wheel drive shaft on the tight cone right side in top on process screw thread, the left hold-in range wheel drive shaft in top on process mounting disc.
Further, the tight cone in top of synchronous pulley drive epaxial insert in the synchronous pulley wheel hub, tensioning nut passes through the screw thread and installs in the synchronous pulley drive shaft on the tight cone right side in top, last tight post in top, down the tight post in top, the tight post in left side top, the tight post in right side top the structure the same, go up the bottom of the tight post in top, down the top of the tight post in top, the right-hand member of the tight post in left side top, the left end of the tight post in right side top all processes the recess, spherical roller is embedded into the recess, spherical roller is tangent with the tight cone in top.
Further, the left side processing screw hole on the synchronous pulley wheel hub, the mounting disc on the synchronous pulley drive shaft pass through the bolt and install in the screw hole on the synchronous pulley wheel hub, the left end of synchronous pulley drive shaft install in driving motor.
Further, hold-in range pulley gear wheel tooth cover, hold-in range pulley wheel hub and friction disc all adopt cast iron material processing to form, the friction disc be circular-arc, the circular arc external diameter of friction disc is the same with hold-in range pulley gear wheel tooth cover's internal diameter, from this, the friction disc can with hold-in range pulley gear wheel tooth cover inner wall seamless contact.
The principle of the invention is as follows: synchronous pulley gear sleeve is on synchronous pulley wheel hub, realizes the overload protection of combination synchronous pulley synchronous belt drive in-process through the size of the frictional force between control synchronous pulley gear sleeve and the friction disc: when the overload appears in synchronous belt drive, the resistance increase that synchronous pulley wheel tooth cover received, the frictional force between synchronous pulley wheel tooth cover and the friction disc is not enough to drive synchronous pulley wheel tooth cover rotatory, relative slip (skid promptly) appears between synchronous pulley wheel tooth cover and the synchronous pulley wheel hub, therefore, only synchronous pulley wheel hub is rotatory under driving motor's drive, and synchronous pulley wheel tooth cover is static, thereby realize overload protection, prevent relative slip between synchronous belt and the synchronous pulley wheel tooth cover, wearing and tearing hold-in range.
The overload protection control method of the invention comprises the following steps: the tight cone in top on the synchronous pulley drive shaft inserts in the synchronous pulley wheel hub to the bell mouth, tensioning nut passes through the screw thread and installs on the synchronous pulley drive shaft on the tight cone right side in top, tighten tensioning nut, the synchronous pulley drive shaft moves right under the effect of tensioning nut power, therefore, the power that the tight cone in top applied to spherical roller makes the tight post rebound in top, the tight post in top moves down, the tight post in left top moves left, the tight post in right top moves right, thereby contact pressure between friction disc and the synchronous pulley wheel gear sleeve inner wall has been increased, and then frictional force between friction disc and the synchronous pulley wheel gear sleeve has been increased, at this moment, after the synchronous pulley wheel gear sleeve received great load power, just can appear the relative slip (skid promptly) between synchronous pulley wheel gear sleeve and the synchronous pulley wheel hub. Specifically, in the practical production application, the number of turns and the tightness of the tightening nut which needs to be tightened under different loads are determined through field debugging and tests, and the magnitude of the friction force between the friction plate and the gear sleeve of the synchronous pulley which is needed under the corresponding loads is realized.
The invention has the beneficial effects that: the invention adopts the design that an upper guide cylinder, a lower guide cylinder, a left guide cylinder and a right guide cylinder are processed in a synchronous pulley hub along the radial direction, a conical hole is processed on the synchronous pulley hub along the axial central line direction and is communicated with the upper guide cylinder, the lower guide cylinder, the left guide cylinder and the right guide cylinder, an upper puller column is arranged in the upper guide cylinder, a lower puller column is arranged in the lower guide cylinder, a left puller column is arranged in the left guide cylinder, a right puller column is arranged in the right guide cylinder, a friction plate is welded at the top end of the upper puller column, the bottom end of the lower puller column, the left end of the left puller column and the right end of the right puller column, a synchronous pulley gear sleeve is sleeved on the synchronous pulley hub, the overload protection in the transmission process of a combined pulley is realized by controlling the friction force between the synchronous pulley gear sleeve and the friction plate, the design is scientific and reasonable, the structure is simple, is convenient to use.
Drawings
For ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is an assembly view of the composite timing pulley of the present invention;
FIG. 2 is a schematic illustration of a transfer of the present invention;
FIG. 3 is a three-dimensional view of a synchronous pulley hub of the present invention;
fig. 4 is a structural view of an upper tightening post of the present invention.
In the figure: 1-synchronous pulley gear sleeve; 2-synchronous pulley hub; 3-an upper guide cylinder; 4-a lower guide cylinder; 5-a left guide cylinder; 6-right guide cylinder; 7-tightly jacking the column; 8-downward propping and tightening the column; 9-left jacking and tightening the column; 10-right top tightening the column; 11-friction plate; 12-a spherical roller; 13-a tapered hole; 14-synchronous pulley drive shaft; 15-tightly pressing the cone; 16-bolt; 17-mounting a disc; 18-a threaded hole; 19-a tensioning nut; 20-thread; 21-a groove; 22-driving the motor.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1 and 2, the following technical solutions are adopted in the present embodiment: the structure includes: synchronous pulley gear sleeve 1, synchronous pulley wheel hub 2, go up and push up tight post 7, push up tight post 8 down, left tight post 9, right tight post 10, friction disc 11, spherical roller 12, synchronous pulley drive shaft 14, tensioning nut 19 tightly, synchronous pulley wheel hub 2 in along radial direction processing go up guide cylinder 3, lower guide cylinder 4, left guide cylinder 5, right guide cylinder 6, as shown in fig. 3, synchronous pulley wheel hub 2 on process bell mouth 13 along axial centerline direction, bell mouth 13 and last guide cylinder 3, lower guide cylinder 4, left guide cylinder 5, right guide cylinder 6 intercommunication, last tight post 7 of top install in last guide cylinder 3, down tight post 8 of top install under in guide cylinder 4, left tight post 9 of top is installed in left guide cylinder 5, right tight post 10 of top is installed in right guide cylinder 6, friction disc 11 weld at the top of last tight post 7 of top, the bottom of tight post 8 of top down, The left end of the tight post 9 in left side top and the right-hand member of the tight post 10 in right side top, hold in range wheel gear wheel tooth cover 1 cover on synchronous pulley wheel hub 2, the frictional force between 1 inner wall of hold in range wheel gear wheel tooth cover and the friction disc 11 realizes the drive of hold in range wheel gear wheel tooth cover 1, the last processing top tight cone 15 of hold in range wheel drive shaft 14, the tapering of the tight cone 15 in top is the same with the tapering of the bell mouth 13 on synchronous pulley wheel hub 2, the hold in range wheel drive shaft 14 on the tight cone 15 right side in top on process screw thread 20, process mounting disc 17 on the tight cone 15 left hold in range wheel drive shaft 14 in top.
Specifically, as shown in fig. 2, the tight cone 15 in top on the synchronous pulley drive shaft 14 insert on synchronous pulley wheel hub 2 to tapered hole 13 in, tensioning nut 19 installs on the synchronous pulley drive shaft 14 on the tight cone 15 right side in top through screw 20, last tight post 7 in top, tight post 8 in bottom, the tight post 9 in left top, the tight post 10 in right top the structure the same, go up the bottom of tight post 7 in top, the top of tight post 8 in bottom, the tight post 9 in left top right end, the tight post 10 in right top all processes recess 21, spherical roller 12 is embedded into in the recess 21, spherical roller 12 is tangent with the tight cone 15 in top.
As shown in fig. 2, a threaded hole 18 is formed in the left side of the synchronous pulley hub 2, a mounting plate 17 of the synchronous pulley drive shaft 14 is mounted in the threaded hole 18 of the synchronous pulley hub 2 by a bolt 16, and the left end of the synchronous pulley drive shaft 14 is mounted in a drive motor 22.
As shown in fig. 4, the synchronous pulley gear sleeve 1, the synchronous pulley hub 2 and the friction plate 11 are all made of cast iron, the friction plate 11 is arc-shaped, and the arc outer diameter of the friction plate 11 is the same as the inner diameter of the synchronous pulley gear sleeve 1, so that the friction plate 11 can be in seamless contact with the inner wall of the synchronous pulley gear sleeve 1.
The principle of the invention is as follows: synchronous pulley gear sleeve 1 is overlapped on synchronous pulley wheel hub 2, realizes the overload protection of combination synchronous pulley synchronous belt drive in-process through the size of the frictional force between control synchronous pulley gear sleeve 1 and friction disc 11: when the overload appears in synchronous belt drive, the resistance increase that synchronous pulley wheel tooth cover 1 received, the frictional force between synchronous pulley wheel tooth cover 1 and the friction disc 11 is not enough to drive synchronous pulley wheel tooth cover 1 rotatory, relative slip (skid promptly) appears between synchronous pulley wheel tooth cover 1 and the synchronous pulley wheel hub 2, therefore, only synchronous pulley wheel hub 2 is rotatory under driving motor 22's drive, and synchronous pulley wheel tooth cover 1 is static, thereby realize overload protection, prevent relative slip between synchronous belt and the synchronous pulley wheel tooth cover 1, wearing and tearing hold-in range.
The overload protection control method of the invention comprises the following steps: a tightening cone 15 on a synchronous pulley driving shaft 14 is inserted into the conical hole 13 on the synchronous pulley hub 2, a tensioning nut 19 is arranged on the synchronous pulley driving shaft 14 on the right side of the tightening cone 15 through a thread 20, the tensioning nut 19 is screwed, the synchronous pulley driving shaft 14 moves rightwards under the action of the tensioning nut 19, thus, the force of the tightening cone 15 applied to the spherical roller 12 causes the upper tightening post 7 to move upward, the lower tightening post 8 to move downward, the left tightening post 9 to move leftward, and the right tightening post 10 to move rightward, thereby increasing the contact pressure between the friction plate 11 and the inner wall of the gear sleeve 1 of the synchronous pulley, further increasing the friction force between the friction plate 11 and the gear sleeve 1 of the synchronous gear wheel, at the moment, after the gear sleeve 1 of the synchronous gear wheel is subjected to larger load force, relative slip (i.e., slippage) between the timing pulley gear sleeve 1 and the timing pulley hub 2 will occur. Specifically, in practical production application, the number of turns and the tightness of the tightening nut which need to be tightened under different loads are determined through field debugging and tests, so that the friction force between the friction plate 11 and the synchronous pulley gear sleeve 1 which is needed under the corresponding load is realized.
The foregoing shows and describes the fundamental principles and features of the invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The utility model provides an overload protection formula combination synchronous pulley for synchronous belt drive which characterized in that: the structure includes: synchronous pulley gear sleeve, synchronous pulley hub, upper tightening column, lower tightening column, left tightening column, right tightening column, friction plate, spherical roller, synchronous pulley drive shaft, tensioning nut, synchronous pulley hub in along the radial direction processing upper guide cylinder, lower guide cylinder, left guide cylinder, right guide cylinder, synchronous pulley hub on along the axial central line direction processing taper hole, taper hole and upper guide cylinder, lower guide cylinder, left guide cylinder, right guide cylinder intercommunication, the upper tightening column install in upper guide cylinder, lower tightening column install in lower guide cylinder, left tightening column install in left guide cylinder, right tightening column install in right guide cylinder, the friction plate weld at the top of upper tightening column, the bottom of lower tightening column, the left end of left tightening column and the right-hand member of right tightening column, synchronous pulley gear sleeve is on synchronous pulley hub, the friction force between the inner wall of the gear sleeve of the synchronous belt wheel and the friction plate realizes the driving of the gear sleeve of the synchronous belt wheel, the upper processing tightening cone of the driving shaft of the synchronous belt wheel has the same taper as the taper of the taper hole on the hub of the synchronous belt wheel, the screw thread is processed on the driving shaft of the synchronous belt wheel on the right side of the tightening cone, the mounting disc is processed on the driving shaft of the synchronous belt wheel on the left side of the tightening cone, the tightening cone on the driving shaft of the synchronous belt wheel is inserted into the taper hole on the hub of the synchronous belt wheel, the tightening nut is installed on the driving shaft of the synchronous belt wheel on the right side of the tightening cone through the screw thread, the upper tightening column, the lower tightening column, the left tightening column and the right tightening column have the same structure, the bottom end of the upper tightening column, the top end of the lower tightening column, the right end of the left tightening column and the left end of the right, the left side processing screw hole on the synchronous pulley wheel hub, the mounting disc on the synchronous pulley drive shaft passes through the bolt and installs in the screw hole on the synchronous pulley wheel hub, and the left end of synchronous pulley drive shaft is installed in the drive motor.
2. An overload protection type combined synchronous pulley for a synchronous belt drive as claimed in claim 1, wherein: the synchronous pulley gear sleeve, the synchronous pulley hub and the friction plate are all made of cast iron, the friction plate is arc-shaped, and the arc outer diameter of the friction plate is the same as the inner diameter of the synchronous pulley gear sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711198590.3A CN107795647B (en) | 2017-11-26 | 2017-11-26 | Overload protection type combined synchronous belt pulley for synchronous belt transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711198590.3A CN107795647B (en) | 2017-11-26 | 2017-11-26 | Overload protection type combined synchronous belt pulley for synchronous belt transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107795647A CN107795647A (en) | 2018-03-13 |
| CN107795647B true CN107795647B (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711198590.3A Active CN107795647B (en) | 2017-11-26 | 2017-11-26 | Overload protection type combined synchronous belt pulley for synchronous belt transmission |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173551B (en) * | 2019-06-21 | 2024-06-04 | 上海快点机器人科技有限公司 | Speed reducing mechanism with overload protection function |
| CN114671258A (en) * | 2022-04-22 | 2022-06-28 | 毅康科技有限公司 | Solid-liquid dual-purpose accurate dosing device and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2507718B1 (en) * | 1981-06-15 | 1986-09-19 | Egretier Jean Michel | SAFETY DEVICE AGAINST EXCESSIVE TORQUES |
| JPH08178013A (en) * | 1994-12-22 | 1996-07-12 | Chuo Giken Kogyo:Kk | Drive transmission device for rotary shaft |
| JP2004261093A (en) * | 2003-03-03 | 2004-09-24 | Yanmar Agricult Equip Co Ltd | Combine harvester |
| CN201198129Y (en) * | 2008-05-13 | 2009-02-25 | 朱世箴 | Electric hammer roller type safety clutch |
| CN201190778Y (en) * | 2008-05-15 | 2009-02-04 | 方杰 | Gear with load transmitted by conical surface |
| JP5179427B2 (en) * | 2009-04-02 | 2013-04-10 | アスモ株式会社 | Rotation transmission device and manufacturing method thereof |
| CN102434644B (en) * | 2011-12-09 | 2014-10-15 | 上海科勒电子科技有限公司 | Overload protection transmission mechanism |
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Effective date of registration: 20191202 Address after: 454000 Henan New District of Jiaozuo, the No. 801 Henan Road, industry and information technology, Career Academy Applicant after: HENAN COLLEGE OF INDUSTRY & INFORMATION TECHNOLOGY Applicant after: Li Taotao Address before: 454000 Henan New District of Jiaozuo, the No. 801 Henan Road, industry and information technology, Career Academy Applicant before: Li Taotao |
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Effective date of registration: 20201215 Address after: 214500 south of mujinsi bridge, Jingcheng street, Jingjiang City, Taizhou City, Jiangsu Province Patentee after: Jiangsu HENGWEI protective equipment manufacturing Co.,Ltd. Address before: Henan Vocational College of industry and information technology, 801 Bilian Road, Jiaozuo New District, Henan Province Patentee before: HENAN College OF INDUSTRY & INFORMATION TECHNOLOGY Patentee before: Li Taotao |
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Effective date of registration: 20211209 Address after: 214500 No. 68-10, north side of North Third Ring Road, Chengbei Park, Jingjiang Economic Development Zone, Taizhou City, Jiangsu Province Patentee after: Jiangsu Yongxin Hengye Auto Parts Technology Co.,Ltd. Address before: 214500 south of mujinsi bridge, Jingcheng street, Jingjiang City, Taizhou City, Jiangsu Province Patentee before: Jiangsu HENGWEI protective equipment manufacturing Co.,Ltd. |
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