CN105006189A - Unidirectional load dynamics speed regulation experiment table - Google Patents
Unidirectional load dynamics speed regulation experiment table Download PDFInfo
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- CN105006189A CN105006189A CN201510189500.9A CN201510189500A CN105006189A CN 105006189 A CN105006189 A CN 105006189A CN 201510189500 A CN201510189500 A CN 201510189500A CN 105006189 A CN105006189 A CN 105006189A
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Abstract
The present invention discloses a unidirectional load dynamics speed regulation experiment table. The unidirectional load dynamics speed regulation experiment table comprises a rack, a slider-crank mechanism and a gear rack transmission mechanism which are arranged on the rack, an overrun clutch, a magnetic powder brake and a control circuit, and the gear rack transmission mechanism comprises a rack, a gear, a gear shaft and a bearing block. The rack is fixed on a sliding block of the slider-crank mechanism and is meshed with the gear, the gear is fixed at the power input end of the gear shaft, and the power output end of the gear shaft is connected with the overrun clutch. The overrun clutch is connected with a main shaft of the magnetic powder brake, the gear shaft is supported by the bearing block, and the bearing block and a pedestal of the magnetic powder brake are fixed on the rack. The unidirectional load dynamics speed regulation experiment table of the present invention does not transmit power back to a system when the stroke of the system hauls back, is convenient to adjust the loads, is used to simulate the loads of the mechanical equipment, and enables an experiment effect of speed fluctuation to be improved.
Description
[technical field]
The present invention relates to the experiment table of mechanical engineering field, particularly relate to a kind of unidirectional loads dynamic speed governing experiment table.
[background technology]
Two kinds of main dynamic speed governing experiment porchs are had to be that the JST-A train of mechanism dynamic speed governing experiment table of Hunan Chang Qing Science & Teaching Instrument company limited and the JST-A type mechanical system velocity perturbation of Hunan Jia Rui Science & Teaching Instrument company limited regulate experiment table in the market.
Now dynamic speed governing experiment table commercially take slider-crank mechanism as moving link, using spring or load simulator as operating load.There is serious design defect time using spring as load: when slide block pushes away forward, spring pressurized contracts and does negative work to system, and system kinetic energy reduces; When slide block backhaul, spring recovers and does positive work to system, and system kinetic energy increases.Under the effect not considering friction force, working resistance institute work one is positive one negative, just in time cancels each other, and also namely the energy of whole system remains unchanged substantially.Therefore, the working resistance of this experiment table can not play the effect of speed governing.During using load simulator as load, unidirectional loads can be realized, but this load is not easy to regulate and measure.
[summary of the invention]
The technical problem to be solved in the present invention is to provide a kind of load can not feed back power to system when system makes the return trip empty stroke, and the unidirectional loads dynamic speed governing experiment table regulated is convenient in load.
The technical matters that the present invention will solve further is to provide the unidirectional loads dynamic speed governing experiment table that a kind of load is convenient to measure.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is, a kind of unidirectional loads dynamic speed governing experiment table, comprise frame, rack-mounted slider-crank mechanism, rack and pinion drive mechanism, overrunning clutch, magnetic powder brake and control circuit, rack and pinion drive mechanism comprises tooth bar, gear, gear shaft and bearing seat; Tooth bar is fixed on the slide block of slider-crank mechanism, with gears meshing; Gear is fixed on the power intake of gear shaft, and the clutch end of gear shaft is connected with overrunning clutch; Overrunning clutch is connected with the main shaft of magnetic powder brake; Gear shaft is by bearing block support, and the base of bearing seat and magnetic powder brake is fixed in frame.
Above-described unidirectional loads dynamic speed governing experiment table, comprise torque sensor and shaft coupling, the input end of torque sensor main shaft is connected with overrunning clutch, and the output terminal of torque sensor main shaft is connected with the main shaft of magnetic powder brake by shaft coupling; The base of torque sensor is fixed in frame.
Above-described unidirectional loads dynamic speed governing experiment table, described overrunning clutch is unidirectional needle bearing, the clutch end of gear shaft comprises bearing bore, and the outer ring of unidirectional needle bearing is fixed in bearing bore, and the spindle nose of the input end of torque sensor main shaft is supported by the needle roller of unidirectional needle bearing.
Above-described unidirectional loads dynamic speed governing experiment table, slider-crank mechanism comprises motor, driving pulley, negative pulley wheel, belt, flywheel, flywheel shaft, flywheel shaft bearing, connecting rod, line slideway auxiliary, and line slideway auxiliary comprises the slide block described in guide rail; Motor, flywheel shaft bearing and guide rail are fixed in frame; Flywheel shaft is supported by flywheel shaft bearing, and negative pulley wheel is arranged on the inner of flywheel shaft, and flywheel is arranged on the outer end of flywheel shaft; Crank pin on one end of connecting rod and flywheel is hinged, the hinge of the other end and slide block side; Driving pulley is arranged on motor shaft, by belt drive negative pulley wheel.
Above-described unidirectional loads dynamic speed governing experiment table, comprises scrambler and the second shaft coupling, and the inner of flywheel shaft drives scrambler by the second shaft coupling.
Above-described unidirectional loads dynamic speed governing experiment table, control circuit comprises computing machine, and main frame comprises PCI capture card, and the data output end of torque sensor and scrambler connects the Data Input Interface of PCI capture card.
Unidirectional loads dynamic speed governing experiment table of the present invention can not feed back power to system when system makes the return trip empty stroke, and load is convenient to regulate, and for the load of analog mechanical equipment, and can improve the experiment effect of velocity perturbation.
[accompanying drawing explanation]
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the front view of embodiment of the present invention unidirectional loads dynamic speed governing experiment table.
Fig. 2 is the vertical view of embodiment of the present invention unidirectional loads dynamic speed governing experiment table.
[embodiment]
The structure of embodiment of the present invention unidirectional loads dynamic speed governing experiment table as depicted in figs. 1 and 2, comprise frame 1, slider-crank mechanism, the rack and pinion drive mechanism be arranged in frame 1, overrunning clutch 2, magnetic powder brake 3, torque sensor 4, scrambler 5, shaft coupling 6, shaft coupling 7 and control box 25.
Slider-crank mechanism comprises motor 10, driving pulley 11, negative pulley wheel 12, belt 13, flywheel 14, flywheel shaft 15, flywheel shaft bearing 16, connecting rod 17, line slideway auxiliary.Motor 10 is PWM varying-speed motors.
The guide rail 18 of motor 10, flywheel shaft bearing 16 and line slideway auxiliary is fixed in frame 1.
Flywheel shaft 15 is supported by flywheel shaft bearing 16, and negative pulley wheel 12 is arranged on the inner of flywheel shaft 15, and the inner of flywheel shaft 15 drives scrambler 5 by shaft coupling 7.
Driving pulley 11 is arranged on the spindle nose of motor 10, by belt drive negative pulley wheel 12.
Flywheel 14 is arranged on the outer end of flywheel shaft 15, and the crank pin 1401 on one end of connecting rod 17 and flywheel 14 is hinged, and the bearing pin 1901 of the other end and line slideway auxiliary slide block 19 side is hinged.
Rack and pinion drive mechanism comprises tooth bar 21, gear 22, gear shaft 23 and bearing seat 24.
The base of bearing seat 24 and magnetic powder brake 3, the base of torque sensor 4 are separately fixed in frame 1.
Gear shaft 23 is supported by bearing seat 24, and gear 22 is fixed on the power intake of gear shaft 23.Tooth bar 21 is fixed on the side of the slide block 19 of slider-crank mechanism, engages with gear 22.
Overrunning clutch 2 adopts unidirectional needle bearing, and the spindle nose of gear shaft 23 clutch end has a bearing bore, and the outer ring of unidirectional needle bearing is fixed in bearing bore.The spindle nose of the input end of torque sensor 4 main shaft 401 is supported by the needle roller of unidirectional needle bearing.
The output terminal of torque sensor 4 main shaft 401 is connected with the main shaft of magnetic powder brake 3 by shaft coupling 6.
When motor 10 drives slider-crank mechanism to work, tooth bar 21 driven gear 22 reciprocating rotation, when gear 22 rotates forward, overrunning clutch 2 engages, magnetic powder brake 3 pairs of gears 22 apply load, by regulating electric current in magnetic powder brake can the size of control load.When gear 22 rotates backward, overrunning clutch 2 is separated, and gear 22 can not drive magnetic powder brake 3, and magnetic powder brake 3 pairs of gears 22 do not play use, and gear 22 dallies.
Control circuit comprises a computing machine, PCI capture card is housed in main frame, the data output end of torque sensor and scrambler connects the Data Input Interface of PCI capture card respectively, torque data collects on computing machine by PCI capture card by the moment of torsion that magnetic powder brake produces after torque sensor, and scrambler passes through PCI capture card by crank angular velocity data acquisition on computing machine after counter.
Claims (6)
1. a unidirectional loads dynamic speed governing experiment table, comprise frame, rack-mounted slider-crank mechanism and control circuit, it is characterized in that, comprise rack and pinion drive mechanism, overrunning clutch and magnetic powder brake, rack and pinion drive mechanism comprises tooth bar, gear, gear shaft and bearing seat; Tooth bar is fixed on the slide block of slider-crank mechanism, with gears meshing; Gear is fixed on the power intake of gear shaft, and the clutch end of gear shaft is connected with overrunning clutch; Overrunning clutch is connected with the main shaft of magnetic powder brake; Gear shaft is by bearing block support, and the base of bearing seat and magnetic powder brake is fixed in frame.
2. unidirectional loads dynamic speed governing experiment table according to claim 1, it is characterized in that, comprise torque sensor and shaft coupling, the input end of torque sensor main shaft is connected with overrunning clutch, and the output terminal of torque sensor main shaft is connected with the main shaft of magnetic powder brake by shaft coupling; The base of torque sensor is fixed in frame.
3. unidirectional loads dynamic speed governing experiment table according to claim 1, it is characterized in that, described overrunning clutch is unidirectional needle bearing, the clutch end of gear shaft comprises bearing bore, the outer ring of unidirectional needle bearing is fixed in bearing bore, and the spindle nose of the input end of torque sensor main shaft is supported by the needle roller of unidirectional needle bearing.
4. unidirectional loads dynamic speed governing experiment table according to claim 1, it is characterized in that, slider-crank mechanism comprises motor, driving pulley, negative pulley wheel, belt, flywheel, flywheel shaft, flywheel shaft bearing, connecting rod, line slideway auxiliary, and line slideway auxiliary comprises the slide block described in guide rail; Motor, flywheel shaft bearing and guide rail are fixed in frame; Flywheel shaft is supported by flywheel shaft bearing, and negative pulley wheel is arranged on the inner of flywheel shaft, and flywheel is arranged on the outer end of flywheel shaft; Crank pin on one end of connecting rod and flywheel is hinged, the hinge of the other end and slide block side; Driving pulley is arranged on motor shaft, by belt drive negative pulley wheel.
5. unidirectional loads dynamic speed governing experiment table according to claim 4, is characterized in that, comprises scrambler and the second shaft coupling, and the inner of flywheel shaft drives scrambler by the second shaft coupling.
6. unidirectional loads dynamic speed governing experiment table according to claim 4, it is characterized in that, control circuit comprises computing machine, and main frame comprises PCI capture card, and the data output end of torque sensor and scrambler connects the Data Input Interface of PCI capture card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189500.9A CN105006189B (en) | 2015-04-21 | 2015-04-21 | A kind of unidirectional loads dynamic speed governing experimental bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189500.9A CN105006189B (en) | 2015-04-21 | 2015-04-21 | A kind of unidirectional loads dynamic speed governing experimental bench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105006189A true CN105006189A (en) | 2015-10-28 |
| CN105006189B CN105006189B (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510189500.9A Active CN105006189B (en) | 2015-04-21 | 2015-04-21 | A kind of unidirectional loads dynamic speed governing experimental bench |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301756A (en) * | 2015-11-03 | 2016-02-03 | 芜湖戎征达伺服驱动技术有限公司 | Super low speed rotation bearing platform |
| CN110782768A (en) * | 2019-11-05 | 2020-02-11 | 西南交通大学 | Motor car traction braking experiment model device |
| CN111554171A (en) * | 2020-06-16 | 2020-08-18 | 中北大学 | Experiment table for relation between box structure size and speed reducer efficiency |
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| CN2811950Y (en) * | 2005-06-23 | 2006-08-30 | 上海交通大学 | Test bench for measuring parameters of crank rocker mechanism |
| CN201868021U (en) * | 2010-11-18 | 2011-06-15 | 浙江亚龙教育装备股份有限公司 | Comprehensive training evaluation device for mechanical installation and debugging techniques |
| CN104504989A (en) * | 2014-12-31 | 2015-04-08 | 天津大学 | Typical mechanism motion analysis modular teaching device |
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2015
- 2015-04-21 CN CN201510189500.9A patent/CN105006189B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2811950Y (en) * | 2005-06-23 | 2006-08-30 | 上海交通大学 | Test bench for measuring parameters of crank rocker mechanism |
| CN201868021U (en) * | 2010-11-18 | 2011-06-15 | 浙江亚龙教育装备股份有限公司 | Comprehensive training evaluation device for mechanical installation and debugging techniques |
| CN104504989A (en) * | 2014-12-31 | 2015-04-08 | 天津大学 | Typical mechanism motion analysis modular teaching device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301756A (en) * | 2015-11-03 | 2016-02-03 | 芜湖戎征达伺服驱动技术有限公司 | Super low speed rotation bearing platform |
| CN110782768A (en) * | 2019-11-05 | 2020-02-11 | 西南交通大学 | Motor car traction braking experiment model device |
| CN111554171A (en) * | 2020-06-16 | 2020-08-18 | 中北大学 | Experiment table for relation between box structure size and speed reducer efficiency |
| CN111554171B (en) * | 2020-06-16 | 2021-08-27 | 中北大学 | Experiment table for relation between box structure size and speed reducer efficiency |
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| Publication number | Publication date |
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| CN105006189B (en) | 2018-06-12 |
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