CN110987384A - Steel wire rope testing machine speed regulating mechanism with stepless speed regulating function and speed regulating method thereof - Google Patents
Steel wire rope testing machine speed regulating mechanism with stepless speed regulating function and speed regulating method thereof Download PDFInfo
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- CN110987384A CN110987384A CN201911053461.4A CN201911053461A CN110987384A CN 110987384 A CN110987384 A CN 110987384A CN 201911053461 A CN201911053461 A CN 201911053461A CN 110987384 A CN110987384 A CN 110987384A
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Abstract
The invention discloses a speed regulating mechanism with a stepless speed regulating function for a steel wire rope testing machine and a speed regulating method thereof. The speed regulating mechanism of the existing elevator steel wire rope testing machine can realize few stepless speed regulation, and cannot simulate the actual working condition of an elevator. The axial distance adjusting device comprises a motor fixing seat, a sliding block, a guide rail, a limiting block, a lead screw nut, a lead screw seat and a motor I; the speed adjusting device comprises an input shaft, an intermediate shaft, an output shaft, a straight bevel gear II, a straight bevel gear I, a cylindrical friction wheel II and a spring; the actuating device comprises a traction sheave and a driving wheel shaft. The distance from the contact position of the cylindrical surface of the second cylindrical friction wheel and the end surface of the first cylindrical friction wheel to the rotating shaft of the first cylindrical friction wheel is changed, so that the output rotating speed can be regulated in a stepless manner, the complex operating condition of the elevator can be simulated, and the experimental reliability of the steel wire rope is improved; the first cylindrical friction wheel is pressurized by spring force, so that the normal work of the two friction wheels is ensured.
Description
Technical Field
The invention belongs to the technical field of elevator steel wire rope testing, and particularly relates to a speed regulating mechanism of a steel wire rope testing machine with a stepless speed regulating function and a speed regulating method thereof.
Background
The elevator becomes a necessary vehicle in a high-rise building, and great convenience is brought to the daily life of people. According to the statistics of the China Elevator Association, the usage amount of the China elevators is 640 thousands of elevators at the end of 2018, and the average annual growth rate is more than 20%. With the increasing demand of elevators, the probability of accidents of elevators is also increasing. The safety accidents of casualties and economic losses caused by abrasion and breakage of the elevator steel wire rope are still higher every year, and usually, whether the steel wire rope has a broken wire phenomenon or not is detected by a detector, and the reason for generating the broken wire is judged according to the shape of the broken wire. However, such detection is visually observed and does not meet the safety requirements. Therefore, the elevator steel wire rope testing machine is required to perform various tests before the elevator steel wire rope is put into practical application.
The speed regulating mechanism of the existing elevator wire rope testing machine mainly comprises: the motor provides a constant rotational speed, and the speed is adjusted by a speed adjusting mechanism such as a gear box. Compared with the traditional mode, the existing mode can realize stepless speed regulation for a few, and cannot simulate the actual working condition of the elevator, so that the test effect is limited.
Disclosure of Invention
The invention aims to provide a speed regulating mechanism with a stepless speed regulating function for a steel wire rope testing machine and a speed regulating method thereof, aiming at the defects of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention relates to a speed regulating mechanism of a steel wire rope testing machine with a stepless speed regulating function, which comprises an axial distance regulating device, a speed regulating device and an executing device. The axial distance adjusting device comprises a motor fixing seat, a sliding block, a guide rail, a limiting block, a lead screw nut, a lead screw seat and a motor I; the screw rod and the screw rod seat form a rotating pair and are connected with an output shaft of the motor I through a coupling I; a base of the motor I is fixed with the screw rod seat; the screw nut and the screw form a screw pair; two limiting blocks are fixed at two ends of the screw rod; the guide rail is fixed with the screw rod seat; the sliding block is fixed with the screw nut and forms a sliding pair with the guide rail; the motor fixing seat is fixed with the screw nut; the speed adjusting device comprises an input shaft, an intermediate shaft, an output shaft, an input shaft support frame, an output shaft support frame, a straight bevel gear II, a straight bevel gear I, a cylindrical friction wheel II and a spring; the base of the motor II is fixed on the motor fixing seat; the input shaft and the input shaft support frame form a revolute pair; one end of the input shaft is connected with an output shaft of the second motor through a second coupling, and the other end of the input shaft is connected with the second cylindrical friction wheel through a key and is axially positioned with the second cylindrical friction wheel through a pin; the middle shaft and the mounting base form a revolute pair; the first cylindrical friction wheel is connected with the middle shaft through a sliding key; the spring is sleeved on the intermediate shaft, and two ends of the spring are respectively contacted with the first cylindrical friction wheel and the mounting base; the spring is provided with a pretightening force; the first straight bevel gear is fixed on the intermediate shaft and is meshed with a second straight bevel gear fixed on the output shaft; two ends of the output shaft are supported on the output shaft support frame and the input shaft support frame through bearings; the executing device comprises a traction sheave and a driving wheel shaft; one end of the driving wheel shaft is connected with the output shaft through a third coupler, and the traction wheel is fixed at the other end of the driving wheel shaft.
And the first coupler adopts an Oldham coupler.
And the second coupler and the third coupler are both plum blossom-shaped elastic couplers.
The bearing adopts an angular contact ball bearing.
The spring adopts two nested cylindrical spiral springs with different diameters.
The speed regulating method of the speed regulating mechanism of the steel wire rope testing machine with the stepless speed regulating function comprises the following specific steps:
fixing a lead screw seat and a seat body of a steel wire rope testing machine; the driving wheel shaft is supported on the steel wire rope testing machine through an angular contact ball bearing II; hinging a guide wheel on a steel wire rope testing machine, wherein an elevator steel wire rope is connected with a traction wheel and the guide wheel; the controller controls the first motor to rotate at a constant speed so as to drive the lead screw to rotate, the lead screw nut drives the sliding block, the motor fixing frame, the second motor, the second coupler, the input shaft and the second cylindrical friction wheel to move horizontally together, so that the position of the second cylindrical friction wheel on one end face of the first cylindrical friction wheel is changed, and after the preset transmission ratio of the second cylindrical friction wheel to the first cylindrical friction wheel is achieved, the controller controls the second motor to rotate; the spring ensures that the second cylindrical friction wheel and the first cylindrical friction wheel are tightly attached and extruded; the power of the motor II is transmitted to the cylindrical friction wheel I through the input shaft and the cylindrical friction wheel II and then transmitted to the intermediate shaft through the cylindrical friction wheel I; the power of the intermediate shaft is transmitted to the output shaft through the first straight bevel gear and the second straight bevel gear which are meshed with each other, and finally transmitted to the traction sheave through the third coupler and the driving wheel shaft, and the traction sheave drives the elevator steel wire rope to rotate.
The invention has the beneficial effects that:
1. according to the invention, by arranging the cylindrical friction wheel, the cylindrical surface of the cylindrical friction wheel II is in mutual contact with the end surface of the cylindrical friction wheel I, and the stepless regulation of the output rotating speed can be realized by changing the distance between the contact part and the rotating shaft of the cylindrical friction wheel I, so that the complex working condition of elevator operation can be simulated, and the reliability of a steel wire rope experiment is greatly improved;
2. the two nested cylindrical spiral springs with different diameters are arranged on the rotating shaft of the first cylindrical friction wheel, and the first cylindrical friction wheel is pressurized by using the spring force generated by the cylindrical spiral springs, so that the normal work of the two friction wheels is ensured;
3. the axial distance adjusting device is assembled by the lead screw, the lead screw nut, the limiting block and the like, so that the synchronous movement of the input motor and the friction wheel during speed adjustment can be realized, and the working reliability of the coupling at the joint of the input shaft and the motor II is ensured.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a sectional view of fig. 1.
In the figure: 1. a traction sheave; 2. angular contact ball bearing II; 3. a drive axle; 4. a third coupler; 5. an output shaft; 6. an output shaft support; 7. a second straight bevel gear; 8. a first straight bevel gear; 9. an input shaft support; 10. a second coupler; 11. a lead screw seat; 12. a lead screw; 13. a motor fixing seat; 14. a lead screw nut; 15. a slider; 16. a guide rail; 17. a limiting block; 18. a first coupler; 19. a first motor; 20. a first angular contact ball bearing; 21. an intermediate shaft; 22. a spring; 23. a first cylindrical friction wheel; 24. a second cylindrical friction wheel; 25. a pin; 26. an input shaft.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the speed regulating mechanism of the steel wire rope testing machine with the stepless speed regulating function comprises an axial distance regulating device, a speed regulating device and an executing device. The axial distance adjusting device comprises a motor fixing seat 13, a sliding block 15, a guide rail 16, a limiting block 17, a screw rod 12, a screw rod nut 14, a screw rod seat 11 and a first motor 19; the screw 12 and the screw base 11 form a revolute pair, and are connected with an output shaft of a motor I19 through a coupling I18 (an Oldham coupling is adopted in the embodiment); the base of the first motor 19 is fixed with the screw rod seat 11; the screw nut 14 and the screw 12 form a screw pair; the two limiting blocks 17 are fixed at two ends of the screw 12 and limit the screw nut 14; the guide rail 16 is fixed with the screw rod seat 11; the slide block 15 is fixed with the screw nut 14 and forms a sliding pair with the guide rail 16; the motor fixing seat 13 is fixed with the screw nut 14; the speed adjusting device comprises an input shaft 26, an intermediate shaft 21, an output shaft 5, an input shaft support frame 9, an output shaft support frame 6, a straight bevel gear II 7, a straight bevel gear I8, a cylindrical friction wheel I23, a cylindrical friction wheel II 24 and a spring 22; the base of the motor II is fixed on the motor fixing seat 13; the input shaft 26 and the input shaft support frame 9 form a revolute pair; one end of an input shaft 26 is connected with an output shaft of a second motor through a second coupling 10 (a quincunx elastic coupling), and the other end of the input shaft is connected with a second cylindrical friction wheel 24 through a key and is axially positioned with the second cylindrical friction wheel 24 through a pin 25; the intermediate shaft 21 and the mounting base form a revolute pair; the first cylindrical friction wheel 23 is connected with the intermediate shaft 21 through a sliding key and can slide along the intermediate shaft 21; the spring 22 is sleeved on the intermediate shaft 21, and two ends of the spring are respectively contacted with the first cylindrical friction wheel 23 and the mounting base; the spring 22 is provided with a pre-tightening force; the first straight bevel gear 8 is fixed on the intermediate shaft 21 and is meshed with the second straight bevel gear 7 fixed on the output shaft 5; two ends of the output shaft 5 are supported on the output shaft support frame 6 and the input shaft support frame 9 through angular contact ball bearings I20; the executing device comprises a traction sheave 1 and a driving wheel shaft 3; one end of a driving wheel shaft 3 is connected with an output shaft 5 through a third coupling 4 (a quincunx elastic coupling), and a traction sheave 1 is fixed at the other end of the driving wheel shaft 3.
The speed regulating method of the speed regulating mechanism of the steel wire rope testing machine with the stepless speed regulating function comprises the following specific steps:
fixing the lead screw seat 11 with a seat body of a steel wire rope testing machine; the driving wheel shaft 3 is supported on the steel wire rope testing machine through an angular contact ball bearing II 2; the guide wheel is hinged on a steel wire rope testing machine, and an elevator steel wire rope is connected with the traction wheel 1 and the guide wheel; the controller controls the first motor 19 to rotate at a constant speed so as to drive the screw rod 12 to rotate, the screw rod nut 14 drives the sliding block 15, the motor fixing frame 13, the second motor, the second coupling 10, the input shaft 26 and the second cylindrical friction wheel 24 to horizontally move together, so that the position of the second cylindrical friction wheel 24 on the end face of the first cylindrical friction wheel 23 is changed, and after the preset transmission ratio of the second cylindrical friction wheel 24 to the first cylindrical friction wheel 23 is achieved, the controller controls the second motor to rotate; under the condition that the rigidity of the spring 22 is enough, the pre-tightening force of the spring 22 can ensure that the second cylindrical friction wheel 24 and the first cylindrical friction wheel 23 are tightly attached and extruded, and the second cylindrical friction wheel 24 cannot move up and down in a large range; the power of the motor II is transmitted to the cylindrical friction wheel I23 through the input shaft 26 and the cylindrical friction wheel II 24 and then transmitted to the intermediate shaft 21 through the cylindrical friction wheel I23; the power of the intermediate shaft 21 is transmitted to the output shaft 5 through the first straight bevel gear 8 and the second straight bevel gear 7 which are meshed with each other, and finally transmitted to the traction sheave 1 through the third coupler 4 and the driving wheel shaft 3, and the traction sheave 1 drives the elevator steel wire rope to perform rotation test.
Claims (6)
1. Wire rope test machine speed control mechanism with stepless speed control function, including axial distance adjusting device, speed adjusting device and final controlling element, its characterized in that:
the axial distance adjusting device comprises a motor fixing seat, a sliding block, a guide rail, a limiting block, a lead screw nut, a lead screw seat and a motor I; the screw rod and the screw rod seat form a rotating pair and are connected with an output shaft of the motor I through a coupling I; a base of the motor I is fixed with the screw rod seat; the screw nut and the screw form a screw pair; two limiting blocks are fixed at two ends of the screw rod; the guide rail is fixed with the screw rod seat; the sliding block is fixed with the screw nut and forms a sliding pair with the guide rail; the motor fixing seat is fixed with the screw nut; the speed adjusting device comprises an input shaft, an intermediate shaft, an output shaft, an input shaft support frame, an output shaft support frame, a straight bevel gear II, a straight bevel gear I, a cylindrical friction wheel II and a spring; the base of the motor II is fixed on the motor fixing seat; the input shaft and the input shaft support frame form a revolute pair; one end of the input shaft is connected with an output shaft of the second motor through a second coupling, and the other end of the input shaft is connected with the second cylindrical friction wheel through a key and is axially positioned with the second cylindrical friction wheel through a pin; the middle shaft and the mounting base form a revolute pair; the first cylindrical friction wheel is connected with the middle shaft through a sliding key; the spring is sleeved on the intermediate shaft, and two ends of the spring are respectively contacted with the first cylindrical friction wheel and the mounting base; the spring is provided with a pretightening force; the first straight bevel gear is fixed on the intermediate shaft and is meshed with a second straight bevel gear fixed on the output shaft; two ends of the output shaft are supported on the output shaft support frame and the input shaft support frame through bearings; the executing device comprises a traction sheave and a driving wheel shaft; one end of the driving wheel shaft is connected with the output shaft through a third coupler, and the traction wheel is fixed at the other end of the driving wheel shaft.
2. The speed regulating mechanism with the stepless speed regulating function for the steel wire rope testing machine according to claim 1, is characterized in that: and the first coupler adopts an Oldham coupler.
3. The speed regulating mechanism with the stepless speed regulating function for the steel wire rope testing machine according to claim 1, is characterized in that: and the second coupler and the third coupler are both plum blossom-shaped elastic couplers.
4. The speed regulating mechanism with the stepless speed regulating function for the steel wire rope testing machine according to claim 1, is characterized in that: the bearing adopts an angular contact ball bearing.
5. The speed regulating mechanism with the stepless speed regulating function for the steel wire rope testing machine according to claim 1, is characterized in that: the spring adopts two nested cylindrical spiral springs with different diameters.
6. The speed regulating method of the speed regulating mechanism of the steel wire rope testing machine with the stepless speed regulating function according to any one of claims 1 to 5, characterized in that: the method comprises the following specific steps:
fixing a lead screw seat and a seat body of a steel wire rope testing machine; the driving wheel shaft is supported on the steel wire rope testing machine through an angular contact ball bearing II; hinging a guide wheel on a steel wire rope testing machine, wherein an elevator steel wire rope is connected with a traction wheel and the guide wheel; the controller controls the first motor to rotate at a constant speed so as to drive the lead screw to rotate, the lead screw nut drives the sliding block, the motor fixing frame, the second motor, the second coupler, the input shaft and the second cylindrical friction wheel to move horizontally together, so that the position of the second cylindrical friction wheel on one end face of the first cylindrical friction wheel is changed, and after the preset transmission ratio of the second cylindrical friction wheel to the first cylindrical friction wheel is achieved, the controller controls the second motor to rotate; the spring ensures that the second cylindrical friction wheel and the first cylindrical friction wheel are tightly attached and extruded; the power of the motor II is transmitted to the cylindrical friction wheel I through the input shaft and the cylindrical friction wheel II and then transmitted to the intermediate shaft through the cylindrical friction wheel I; the power of the intermediate shaft is transmitted to the output shaft through the first straight bevel gear and the second straight bevel gear which are meshed with each other, and finally transmitted to the traction sheave through the third coupler and the driving wheel shaft, and the traction sheave drives the elevator steel wire rope to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911053461.4A CN110987384A (en) | 2019-10-31 | 2019-10-31 | Steel wire rope testing machine speed regulating mechanism with stepless speed regulating function and speed regulating method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911053461.4A CN110987384A (en) | 2019-10-31 | 2019-10-31 | Steel wire rope testing machine speed regulating mechanism with stepless speed regulating function and speed regulating method thereof |
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| CN110987384A true CN110987384A (en) | 2020-04-10 |
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| CN201911053461.4A Pending CN110987384A (en) | 2019-10-31 | 2019-10-31 | Steel wire rope testing machine speed regulating mechanism with stepless speed regulating function and speed regulating method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333345A (en) * | 2021-05-12 | 2021-09-03 | 中启胶建集团有限公司 | But concrete cleaning device for construction of water resource |
| CN113776770A (en) * | 2021-11-12 | 2021-12-10 | 菏泽双龙冶金机械有限公司 | Structural part testing device for jaw crusher |
| CN113955407A (en) * | 2021-11-12 | 2022-01-21 | 芜湖合宏新材料科技有限公司 | Automatic equipment feeding device capable of achieving stepless speed regulation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113955407A (en) * | 2021-11-12 | 2022-01-21 | 芜湖合宏新材料科技有限公司 | Automatic equipment feeding device capable of achieving stepless speed regulation |
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Application publication date: 20200410 |
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