CN102706557A

CN102706557A - Multifunctional gear transmission testboard

Info

Publication number: CN102706557A
Application number: CN2012101836045A
Authority: CN
Inventors: 王三民; 董金城; 王颖; 郭家舜; 李剑锋
Original assignee: Northwestern Polytechnical University
Current assignee: Northwestern Polytechnical University
Priority date: 2012-06-06
Filing date: 2012-06-06
Publication date: 2012-10-03

Abstract

The invention provides a multifunctional gear transmission testboard, which includes an electric motor, a torque revolving speed sensor, a gearbox and a brake, wherein the gearbox includes one input shaft, two intermediate shafts and one output shaft which are all mounted in parallel. According to the invention, shafts at different positions and corresponding gears in the gearbox can be dismounted on a base of a testing platform, so as to form a stand-alone power two-branch gear transmission wheel train structure, a two-stage expanded gear transmission wheel train structure, a single-stage independent torsion type gear transmission wheel train structure and a single-stage gear transmission wheel train structure; gears with web boards of different thicknesses and shafts of different diameters can be replaced to vary the rigidity of web boards of the gears and the torsional rigidity of the shafts, so that the dynamic performances of the power two-branch transmission system under different rigidity of the web boards of the gears and the torsional rigidity of the shafts can be studied, and testing support for rigidity of the web boards and the shafts can be provided.

Description

A kind of multifunctional gear transmission test bench

Technical field

The present invention relates to gear mechanism transmission test technical field, be specially a kind of multifunctional gear transmission test bench.

Background technology

Along with industrial expansion, engine capacity increases, and gear-driven torque transmission capacity is required also to improve thereupon.Under the prerequisite of equal transmission size and quality, the approach that improves torque transmission capacity has: the one, and flank of tooth cure process (reaching measures such as gear modification); The 2nd, the power dividing transmission of multiple-limb.The former usually need increase equipment, like large-scale heat treating equipment and gear grinding machines etc.Because the weak link of gear drive intensity is the gear teeth, the power dividing of multiple-limb can alleviate gear teeth load, thereby reduces gear-driven size and quality.

The ultimate principle of power dividing technology is that required torque transmitted or power dividing are become two or more; Make load that each branch transmitted be reduced to former load 1/2nd or littler; Thereby the load that every pair of meshing gear is born reduces greatly, and the life-span is greatly improved.The gordian technique of power two branch's gear train assemblies is the synchronism of power two branches engagements and equal carrying property.The moving displacement of the driving error of each member, engagement dynamic loading performance and gear vibration and dynamic loading are the principal elements that influences power two branches engagement net synchronization capability and all carry performance in power two branch's gear train assemblies; Therefore, how in the prototype gear kinematic train each item dynamic performance parameter to the synchronism of engagement and all the influence of carrying property become matter of utmost importance.

Summary of the invention

The technical matters that solves

For synchronism and all influence of carrying property of each item dynamic performance parameter in the prototype gear kinematic train to engagement; The present invention proposes a kind of multifunctional gear transmission test bench; Can be convenient for measuring quiet dynamic driving error, the engagement dynamic loading amount of kinematic trains such as power two branch's gears and all carry multiple parameters such as coefficient, and then analyze all parameters to the net synchronization capability of gear train assembly engagement with all carry Effect on Performance.

Technical scheme

Technical scheme of the present invention is:

Said a kind of multifunctional gear transmission test bench is characterized in that: comprise motor, torque rotary speed sensor, gear case and detent; Motor reaches torque rotary speed sensor through shaft coupling with power, and torque rotary speed sensor is measured rotating torque, rotating speed and the power of motor output; The torque rotary speed sensor output shaft links to each other with the input shaft of gear case through shaft coupling; The output shaft of gear case links to each other with detent through shaft coupling, and detent is that test unit provides load;

Said gear case includes an input shaft, two intermediate shafts and an output shaft, all parallel installation of input shaft, intermediate shaft and output shaft; Input end angular encoder and an input gear are installed on the input shaft, output end angle encoder, collector ring and an output gear are installed on the output shaft; A gear wheel and a pinion wheel all are installed on two intermediate shafts, two gear wheels all with the input gearing mesh, two pinion wheels all mesh with output gear; Web edge at output gear is symmetrically installed with two acceleration transducers, the vibration acceleration of prototype gear engagement direction, and the measurement result of acceleration transducer is passed to the external data harvester through collector ring.

Beneficial effect

Multifunctional gear transmission test bench provided by the invention, its advantage is: on a test platform, but the quiet dynamic driving error of prototype gear kinematic train, engagement dynamic loading amount and all carry multiple parameters such as coefficient; Utilize a gear case,, realize the test of the dynamic perfromance of disalignment rigidity and gear web rigidity through gear changing more and axle; Through increase and decrease axle system can assembly unit power two branches gear drive train, secondary expansion gear drive train, single-stage branch turn round the test structure of multiple type of belt drive such as formula gear drive train, single gear train; Input shaft and output shaft are placed on the flask joint, and the gear housing rigidity condition is good, is convenient to the replacing of testpieces.

Description of drawings

Fig. 1: gear drive testing table overall construction drawing;

Fig. 2: gear housing figure;

Fig. 3: the gear drive train figure of power two branches;

Fig. 4: secondary expansion gear drive train figure;

Fig. 5: the single-stage branch is turned round formula gear drive train figure;

Fig. 6: single gear train figure;

Wherein: 1, motor; 2, first rubbercushioned sleeve bearing coupling; 3, NJ type torque rotary speed sensor; 4, second rubbercushioned sleeve bearing coupling; 5, gear train assembly; 6, the 3rd rubbercushioned sleeve bearing coupling; 7, magnetic powder brake; 8, testing table; 9, gear case upper box; 10, gear case lower box; 11, input shaft; 12, intermediate shaft; 13, output shaft; 14, input gear; 15, gear wheel; 16, pinion wheel; 17, output gear; 18, input end angular encoder; 19, output end angle encoder; 20, acceleration transducer; 21, collector ring.

Embodiment

Below in conjunction with specific embodiment the present invention is described:

With reference to accompanying drawing 1, a kind of multifunctional gear transmission test bench in the present embodiment comprises motor 1, NJ type torque rotary speed sensor 3, gear train assembly 5 and magnetic powder brake 7, is installed on the testing table 8.Motor reaches NJ type torque rotary speed sensor through first rubbercushioned sleeve bearing coupling 2 with power, and NJ type torque rotary speed sensor is measured rotating torque, rotating speed and the power of motor output.NJ type torque rotary speed sensor output shaft links to each other with the input shaft of gear train assembly through second rubbercushioned sleeve bearing coupling 4.The output shaft of gear train assembly links to each other with magnetic powder brake through the 3rd rubbercushioned sleeve bearing coupling 6.Magnetic powder brake is that test unit provides load, can realize the test condition under the different loads state through conversion output torque.

Gear train assembly is the core component in the present embodiment, includes an input shaft 11, two intermediate shafts 12 and output shafts 13.With reference to accompanying drawing 3, all parallel installation of input shaft, intermediate shaft and output shaft; Input end angular encoder 18 and an input gear 14 are installed on the input shaft, and the input gear adopts general flat key to be installed in input shaft A place.Output end angle encoder 19, collector ring 21 and an output gear 17 are installed on the output shaft, and output gear adopts general flat key to be installed in output shaft F place.All a gear wheel 15 and a pinion wheel 16 are installed on two intermediate shafts through general flat key.Two gear wheels realize that the power branch turns round all simultaneously and the input gearing mesh, are exported by pinion wheel to the power of gear wheel from the input gear transmission, and two pinion wheels are realized power and car, and exported by output shaft all simultaneously and the output gear engagement.

For realizing data acquisition; The input end angular encoder is installed in input shaft B place, and output end angle encoder is installed in output shaft G place, carries out quiet dynamic driving error data acquisition respectively; And data are exported to the external data harvester, can carry out quiet dynamic driving error analysis to measure test.Web edge at output gear is symmetrically installed with two acceleration transducers 20; The vibration acceleration of prototype gear engagement direction; The measurement result of acceleration transducer is passed to the external data harvester through the quill shaft structure of output shaft E-F section and the collector ring at E place; Utilize the machinery system dynamics correlation technique, can carry out the dynamic analysis test and all carry the performance evaluation test.

When adopting complete gear train assembly; This device just can be realized the power two branches gear drive test under the multiple mechanical dynamic characteristic parameter condition: output gear is designed multiple different web width specification; The multiple different middle shaft part diameter specifications of intermediate shaft design; In process of the test, can pass through to change the output gear and the intermediate shaft of different parameters specification, thereby change the rigidity characteristic of wheel based part; Assemble out the experiment table of multiple mechanical dynamic performance, carry out the transmission properties compbined test under the multiple mechanical dynamics property state.

Removed among Fig. 4 an intermediate shaft and on gear wheel and pinion wheel; Realize secondary expansion gear drive test: through changing the output gear and the intermediate shaft of different parameters specification; Thereby change the rigidity characteristic of wheel based part; Assemble out the testing table of multiple mechanical dynamic performance, carry out the transmission properties compbined test under the multiple mechanical dynamics property state.

Output shaft and output gear have been removed among Fig. 5; Wherein an intermediate shaft is converted into output shaft; And through the 3rd rubbercushioned sleeve bearing coupling connection magnetic powder brake, realization single-stage branch is turned round transmission test: through the intermediate shaft of replacing different parameters specification, thus the rigidity characteristic of change wheel based part; Assemble out the testing table of multiple mechanical dynamic performance, carry out the transmission properties compbined test under the multiple mechanical dynamics property state.

Removed output shaft and output gear among Fig. 6 and removed an intermediate shaft and on gear wheel and pinion wheel; With a remaining intermediate shaft as output shaft; And, realize the single-stage driving test:, thereby change the rigidity characteristic of taking turns based part through the intermediate shaft of replacing different parameters specification through the 3rd rubbercushioned sleeve bearing coupling connection magnetic powder brake; Assemble out the testing table of multiple mechanical dynamic performance, carry out the transmission properties compbined test under the multiple mechanical dynamics property state.

Claims

1. a multifunctional gear transmission test bench is characterized in that: comprise motor, torque rotary speed sensor, gear case and detent; Motor reaches torque rotary speed sensor through shaft coupling with power, and torque rotary speed sensor is measured rotating torque, rotating speed and the power of motor output; The torque rotary speed sensor output shaft links to each other with the input shaft of gear case through shaft coupling; The output shaft of gear case links to each other with detent through shaft coupling, and detent is that test unit provides load;