CN102095578B - High-speed train transmission system assembly reliability test bed - Google Patents
High-speed train transmission system assembly reliability test bed Download PDFInfo
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- CN102095578B CN102095578B CN2010105903143A CN201010590314A CN102095578B CN 102095578 B CN102095578 B CN 102095578B CN 2010105903143 A CN2010105903143 A CN 2010105903143A CN 201010590314 A CN201010590314 A CN 201010590314A CN 102095578 B CN102095578 B CN 102095578B
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Abstract
The invention discloses a high-speed train transmission system assembly reliability test bed. The test bed comprises a power transmission flexibility test device, a three-degree-of-freedom vibration simulation test device, and a high-speed train transmission system assembly reliability test device. The three-degree-of-freedom vibration simulation test device and the high-speed train transmission system assembly reliability test device are mounted on the foundation in parallel; a crossbeam of the three-degree-of-freedom vibration simulation test device and a high-speed train transmission system assembly support platform of the high-speed train transmission system assembly reliability test device have a parallel distance of 20 to 40 mm; and the upper work surface of the crossbeam and the upper work surface of the high-speed train transmission system assembly support platform are on the same horizontal plane. The three-degree-of-freedom vibration simulation test device is connected with the power transmission flexibility test device mounted on the foundation through a transverse actuator; and the power transmission flexibility test device is connected with the high-speed train transmission system assembly reliability test device through a cross-shaft type universal coupling.
Description
Technical field
The present invention relates to a kind of rail vehicle power train parameter detecting test unit, more particularly, the present invention relates to a kind of EMU power train assembly reliability test bench.
Background technology
In recent years; China's EMUs technical development is rapid; Through six speed raisings, started surplus in the of 160 in the main line accumulative total in areas such as the ring Bohai Sea, the Yangtze River Delta, Pearl River Delta that the group speed per hour is at 200km/h and above " Harmony " bullet train, the part section moves speed per hour and reaches 250km/h; Successfully started the intercity high ferro train of Jing-Jin in 2008 again; Highest running speed has been brought up to 330-350km/h at one stroke, and the Wuhan-GuangZhou Railway line F-Zero that newly built up in 2009 is near 400km/h, and the EMUs max. speed in the development is near 500km/h.Along with the raising of train running speed and the aggravation of vehicle axle weight load, the vibration aggravation between vehicle and the track, vehicle smoothness reduces, and the safety issue of train and operation stability problem become and become increasingly conspicuous.
Analysis according to train fault in the actual motion shows: the weak link the when power train of bullet train is the train high-speed cruising.Power train is because to transmit moment of torsion very big, and gear rotational speed is too high and bear factors such as Vehicular vibration is excessive, tends to take place the traction electric machine bearing breaking, faults such as inner gear of the gear box gummed, fracture and shaft coupling breakage.If these faults take place in the bullet train actual motion, will produce serious traffic hazard, China's people's lives and properties are sustained losses severely.Detect EMU power train reliability technical development has good impetus to High Speed Train in China so build an EMU power train reliability test bench, have very big social benefit and economic benefit.
At present, both at home and abroad to the development of the vehicle transmission system reliability detection technique that comprises track train and automobile suitable maturation.Chinese scholars and research institution have worked out the fatigue reliability that several different methods detects power train gear case or traction electric machine, but these methods all are power train middle gear case or traction electric machine to be separated respectively study.Such research method has certain effect, can be to the fatigure failure analysis of causes of a certain parts of power train comparatively thorough.But; Train power train in actual motion is done as a whole stressed; Wherein each parts of power train have significant limitation with regard to the method that makes parts of single consideration carry out fail-test like this in the effect of influencing each other, and are also comprehensive inadequately to the evaluation of power train reliability.Simultaneously, receive very big vibration when train orbits, along with the raising vibration meeting of the speed of a motor vehicle is bigger, power train receives pulsating stress effect generation fatigure failure.If power train is put in the static environment, it also is fully nonsensical promptly not having to carry out under the condition of external drive fail-test.
The present invention is an EMU power train assembly reliability test bench; Under the operating mode of dry run track vibration; Make the normal output torque of tested kinematic train, bearing load, and then the problem of fatigue damage of research discussion high-speed track train kinematic train (comprising traction electric machine and retarder system) simultaneously; Provide the fatigure failure situation of traction electric machine, shaft coupling and speed reduction unit in the train kinematic train respectively, point out that in the kinematic train which partly is the weak link in the train operation.Thereby optimize manufacturing and designing of train, guarantee the security and stability of train high-speed cruising.In a word; The exploitation of EMU power train reliability test bench all is of great importance to development and production, experimental study, theoretical research and the quality control of rail vehicle power train product and shortening product development cycle etc., has wide economic benefit and social benefit.
Summary of the invention
Technical matters to be solved by this invention is to have overcome prior art power train is put in the static environment problem that speed reduction unit or drive motor are studied respectively, and a kind of EMU power train assembly reliability test bench is provided.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize: described EMU power train assembly reliability test bench comprises power transmission flexure test device, EMU power train assembly reliability test and Three Degree Of Freedom vibration simulation test unit.Three Degree Of Freedom vibration simulation test unit is installed on the ground; Three Degree Of Freedom vibration simulation test unit is placed with the EMU power train assembly reliability test that is installed on the ground side by side; The parallel distance of the EMU power train assembly support platform in crossbeam in the Three Degree Of Freedom vibration simulation test unit and the EMU power train assembly reliability test is 20～40mm, and the last workplace of the EMU power train assembly support platform in the last workplace of the crossbeam in the Three Degree Of Freedom vibration simulation test unit and the EMU power train assembly reliability test is in the same surface level.Three Degree Of Freedom vibration simulation test unit is connected with power transmission flexure test device on being installed in ground through horizontal actuator, and power transmission flexure test device is connected through universal coupling with spider with EMU power train assembly reliability test.
Three Degree Of Freedom vibration simulation test unit described in the technical scheme comprises crossbeam, the vertical actuator that two structures are identical, tested drive motor longitudinal tie that fixedly hanging seat device, three structures are identical and horizontal actuator.The upper end of the vertical actuator that two structures are identical is connected with actuator Connection Block on the crossbeam lower surface through bolt.Laterally actuator left end and actuator Connection Block that be mutually right angle adjacent with the position with the longitudinal tie seat on the crossbeam through bolt is connected.Identical longitudinal tie one end of three structures respectively with crossbeam on longitudinal tie seat J, longitudinal tie seat K and longitudinal tie seat L welding fixing.Tested drive motor fixedly hanging seat device is bolted on the crossbeam on the workplace through the T type, tested drive motor fixedly on the plane of symmetry and the crossbeam of hanging seat device the long limit of workplace vertical; Described tested drive motor fixedly hanging seat device comprises the parallels tested drive motor lower padding iron identical with two block structures on the identical tested drive motor of the fixing square rail of the tested drive motor T type groove that fixedly hanging seat, two block structures are identical, two block structures.The fixing square rail of the identical T type groove of two block structures is respectively through being bolted to the fixedly upper and lower of the back up pad in the hanging seat of tested drive motor.Parallels is bolted to the left end and the right-hand member of the fixing square rail of T type groove on top respectively on the identical tested drive motor of two block structures through the T type, and the tested drive motor lower padding iron that two block structures are identical is bolted to the left end and the right-hand member of the fixing square rail of T type groove of bottom respectively through the T type.Distance on the identical tested drive motor of two block structures between the parallels confirmed by the size of the last stiff end of tested drive motor, and the distance between the identical tested drive motor lower padding iron of two block structures is confirmed by the size of the following stiff end of tested drive motor; Described tested drive motor fixedly hanging seat is one and passively strengthens the structural members that gusset constitutes by a base plate, back up pad and 3～5.Back up pad is vertically fixed on the base plate, welds fixing 3～5 in the back of back up pad with between above the base plate and strengthens gussets.Three limits of base plate are evenly equipped with the strip through hole that passes bolt.The front of back up pad is provided with the T-slot that the fixing square rail of T type groove is installed in 3～5 vertical being used to; The fixing square rail of described T type groove is the structural member of a cuboid, vertically processes 2 T type grooves that are parallel to each other in the one side of the fixing square rail of T type groove along it, between 2 T type grooves that are parallel to each other, is evenly equipped with 3～5 through holes that pass bolt.The another side of the fixing square rail of T type groove promptly with tested drive motor fixedly the positive contacted one side of the back up pad in the hanging seat be smooth flat.Parallels is the structural member of a cuboid on the tested drive motor, on parallels on the tested drive motor and along it, vertically vertically processes 3 through holes that pass bolt.Tested drive motor lower padding iron is the structural member of a cuboid, on tested drive motor lower padding iron small end face, a boss is set centrally.On tested drive motor lower padding iron and along it, vertically vertically process 3 through holes that pass bolt; Described EMU power train assembly reliability test by EMU power train assembly support platform, accompany the examination speed reduction unit bent plate support and accompany the examination speed reducer assembly form.EMU power train assembly support platform is a rectangular case body structural member, and EMU power train assembly support platform upper surface is provided with T type groove.Accompany the examination speed reducer assembly to pass through T type bolt to EMU power train assembly support platform, accompany the axis of symmetry of accompanying the examination reducer shaft in the examination speed reducer assembly parallel with vertical plane of symmetry of EMU power train assembly support platform.Accompany examination speed reduction unit bent plate support through the left end of T type bolt, accompany the symmetrical plane of examination speed reduction unit bent plate support vertical with vertical plane of symmetry of EMU power train assembly support platform to EMU power train assembly support platform; Described accompany the examination speed reducer assembly to comprise to accompany examination reducer shaft, two structures identical accompany examination reducer shaft bearing), round nut and stop washer that mounting flange is identical with two nested structures.Accompanying the examination reducer shaft is a multidiameter that a shaft shoulder is set respectively in two ends, and one-tenth is rotationally connected in the examination reducer shaft bearing to accompany examination reducer shaft two ends to be installed in identical the accompanying of structure respectively.Every inboard of accompanying examination reducer shaft bearing is connected with the right side or the left side contact of labyrinth type O-ring seal in accompanying examination reducer shaft bearing by the shaft shoulder of accompanying the examination reducer shaft, accompanies the examination reducer shaft accompanying an end that tries outside the reducer shaft bearing to be fixed by round nut and stop washer; The described examination reducer shaft bearing of accompanying comprises bearing seat housing, 2 bearing cover, 2 angular contact ball bearings and 2 labyrinth type O-ring seals that structure is identical that structure is identical that structure is identical.2 identical angular contact ball bearings of structure are installed on respectively in the wide-aperture hole, bearing seat housing two ends, the right side of the angular contact ball bearing outer collar bearing that 2 structures are identical and left side respectively with bearing seat housing two ends macropore in left anchor ring be connected with right anchor ring contact.The outside of the angular contact ball bearing that 2 structures are identical is the identical bearing cover of mounting structure respectively; The end face of the dome ring body on the bearing cover is connected with the right side contact with the left side of angular contact ball bearing outer collar bearing, and 2 identical bearing covers of structure are fixedly connected with the two ends of bearing seat housing through bolt.The labyrinth type O-ring seal that two structures are identical is installed in respectively between the angular contact ball bearing and bearing cover at bearing seat housing two ends; Labyrinth sealing circle right side or left side with accompany the shaft shoulder contact of examination on the reducer shaft to be connected, right side of encircling in the other end of labyrinth sealing circle and the angular contact ball bearing or left side contact and are connected.
Compared with prior art the invention has the beneficial effects as follows:
1. EMU power train assembly reliability test bench of the present invention can be realized the reliability testing of the complete power train system of high speed motor car; With the power train traction electric machine carried out fail-safe analysis separately compare in the past; Complete power train tested more truly reflect power train fatigure failure situation, can easyly find out the easily worn part of power train under the vibration operating mode intuitively.
2. the Three Degree Of Freedom vibration simulation test unit that EMU power train assembly reliability test bench of the present invention comprises; Can accurately simulate the vibration situation of high speed motor car in actual track; For EMU power train reliability detects good test basis is provided, has guaranteed accuracy of test and correctness.
3. EMU power train assembly reliability test bench of the present invention can be realized the torque measurement of the speed of a motor vehicle very on a large scale.Measuring the speed of a motor vehicle is 420Km/h under dynamic operation condition, under static operating mode, can reach 500Km/h.So can satisfy China fully in the detection of the hot-short power train fatigue reliability that moves or developing, have good social benefit and economic benefit.
4. EMU power train assembly reliability test bench reasonable in design of the present invention; Adopt T type bolt ways of connecting that each parts is installed on the casting platform; If a certain parts break down, the technician can overhaul or exchange device more easily.
5. EMU power train assembly reliability test bench of the present invention is equipped with the self-protection device, when moment of torsion is excessive, can cut off connection automatically, well protects equipment and staff.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is the shaft side projection drawing that EMU power train assembly reliability test bench structure of the present invention is formed;
Fig. 2 is the rear view that EMU power train assembly reliability test bench structure of the present invention is formed;
Fig. 3 is the left view that EMU power train assembly reliability test bench structure of the present invention is formed
Fig. 4 is the shaft side projection drawing of the power transmission flexure test device in the EMU power train assembly reliability test bench of the present invention;
Fig. 5 is the shaft side projection drawing of the Three Degree Of Freedom vibration simulation test unit in the EMU power train assembly reliability test bench of the present invention;
Fig. 6 is the axonometric projection graph that the Three Degree Of Freedom vibration simulation test unit middle cross beam structure in the EMU power train assembly reliability test bench of the present invention is formed;
Fig. 7 is the shaft side projection drawing of the EMU power train assembly reliability test in the EMU power train assembly reliability test bench of the present invention;
Fig. 8 is the front view of the EMU power train assembly reliability test in the EMU power train assembly reliability test bench of the present invention;
Fig. 9 is the shaft side projection drawing of accompanying examination gear case bent plate support in the EMU power train assembly reliability test in the EMU power train assembly reliability test bench of the present invention;
Figure 10 is installed in the shaft side projection drawing of accompanying the gear case feet on the examination gear case bent plate support in the EMU power train assembly reliability test in the EMU power train assembly reliability test bench of the present invention;
Figure 11 is the fixing shaft side projection drawing of hanging seat device of tested traction electric machine of the Three Degree Of Freedom vibration simulation test unit in the EMU power train assembly reliability test bench of the present invention;
Figure 12 is the fixing shaft side projection drawing of the fixing square rail of T type groove in the hanging seat device of tested traction electric machine of the Three Degree Of Freedom vibration simulation test unit in the EMU power train assembly reliability test bench of the present invention;
Figure 13 is the fixing shaft side projection drawing of parallels on the traction electric machine in the hanging seat device of tested traction electric machine of the Three Degree Of Freedom vibration simulation test unit in the EMU power train assembly reliability test bench of the present invention;
Figure 14 is the fixing shaft side projection drawing of traction electric machine lower padding iron in the hanging seat device of tested traction electric machine of the Three Degree Of Freedom vibration simulation test unit in the EMU power train assembly reliability test bench of the present invention;
Figure 15 is the shaft side projection drawing of accompanying the examination speed reducer assembly of the EMU power train assembly reliability test in the EMU power train assembly reliability test bench of the present invention;
Figure 16 is the shaft side projection drawing of accompanying examination reducer shaft bearing of the EMU power train assembly reliability test in the EMU power train assembly reliability test bench of the present invention;
Figure 17 be in the EMU power train assembly reliability test bench of the present invention EMU power train assembly reliability test accompany the full sectional view on the examination reducer shaft bearing front view;
Among the figure: A. power transmission flexure test device, B. Three Degree Of Freedom vibration simulation test unit, C. EMU power train assembly reliability test, D. universal coupling with spider; A. crossbeam, the vertical actuator of b., the tested drive motor of c. is the hanging seat device fixedly, the d. longitudinal tie; E. horizontal actuator, f. EMU power train assembly support platform, g. are accompanied examination speed reduction unit bent plate support, and h. accompanies the examination speed reducer assembly; 1. tested drive motor is hanging seat fixedly, and 2.T type groove is fixed square rail, parallels on the 3. tested drive motor, 4. tested drive motor lower padding iron; 5. accompany the examination reducer shaft, 6. accompany examination reducer shaft bearing, 7. mounting flange, 8. nut and stop washer; 9. bearing seat housing, 10. bearing cover, 11. angular contact ball bearings, 12. labyrinth type O-ring seals.
Embodiment
Below in conjunction with accompanying drawing the present invention is explained in detail:
The object of the present invention is to provide a kind of EMU power train assembly reliability test bench, to satisfy the needs that the dependability parameter of rail vehicle kinematic train under multiple operating condition detects.This testing table has adopted the structural design of rational load simulated system; Can simulate the vibration operating mode of three degree of freedom and Three Degree Of Freedom coupling respectively; Be the vibrational state that accurate analog orbit vehicle on the way goes, thereby guaranteed the correctness and the authenticity of EMU power train dependability parameter test result.The test of doing is destructive test, so just can accurately provide reason and concrete technical parameter that tested power train is damaged.Research EMU power train reliability has very high social value and social effect widely, for China's high speed motor car develops the technical guarantee that provides the security performance aspect to test rapidly, has good social benefit and economic benefit.
Consult Fig. 1 to Fig. 4, described EMU power train assembly reliability test bench mainly is made up of power transmission flexure test device A, Three Degree Of Freedom vibration simulation test unit B, EMU power train assembly reliability test C, electric-control system and hydraulic power unit.Power transmission flexure test device A, Three Degree Of Freedom vibration simulation test unit B and EMU power train assembly reliability test C are installed on the ground.Be connected through universal coupling with spider D between power transmission flexure test device A and the EMU power train assembly reliability test C.Three Degree Of Freedom vibration simulation test unit B is connected with power transmission flexure test device A through a horizontal actuator e; Three Degree Of Freedom vibration simulation test unit B and EMU power train assembly reliability test C place side by side; The parallel distance of EMU power train assembly support platform f among crossbeam a among the Three Degree Of Freedom vibration simulation test unit B and the EMU power train assembly reliability test C is 20～40mm; Distance range can not be excessive, also can not be too small.The last workplace of EMU power train assembly support platform f among the EMU power train assembly reliability test C and the last workplace of the crossbeam a among the Three Degree Of Freedom vibration simulation test unit B are in the same surface level.
Consult Fig. 5 and Fig. 6, described Three Degree Of Freedom vibration simulation test unit B comprises a crossbeam a, vertical actuator b that two structures are identical, tested drive motor fixedly hanging seat device c, three longitudinal tie d and horizontal actuator e that structure is identical.Crossbeam a among the Three Degree Of Freedom vibration simulation test unit B is a case body structural member, and it is a T font that crossbeam a overlooks, and crossbeam a master is regarded as a T font.J, K and L place on the crossbeam a front of T font is arranged to longitudinal tie seat J, longitudinal tie seat K and longitudinal tie seat L; The lower surface of crossbeam a (bottom surface) is provided with two actuator Connection Blocks, and the position of the position of these two actuator Connection Blocks and longitudinal tie seat J and longitudinal tie seat K is adjacent and be mutually the right angle.The right side of crossbeam a is provided with the actuator Connection Block, and the position of the position of this actuator Connection Block and longitudinal tie seat K is adjacent and be mutually the right angle.Crossbeam a both can adopt the method for casting to process, and also can adopt the mode of steel plate welding to process.The last workplace of crossbeam a is provided with T type groove; Tested drive motor fixedly hanging seat device c is bolted on the last workplace of crossbeam a through the T type; The tested drive motor fixedly hanging seat device c plane of symmetry is vertical with the long limit that crossbeam a goes up workplace; Can also and install on the crossbeam a simultaneously, make crossbeam a become an omnipotent fixedly Other Instruments and the carrier of device through the flexible fixing various Other Instruments of T type groove and T type bolt.Tested drive motor fixedly hanging seat device c is gone up fixing tested drive motor.Two identical vertical actuator b of structure go up the actuator Connection Block that is provided with through bolt and crossbeam a lower surface (bottom surface) and are connected; Horizontal actuator e is connected through bolt and the adjacent with longitudinal tie seat K of crossbeam a right side and the actuator Connection Block that is mutually the right angle.Three identical longitudinal tie d of structure arrange with the triangle mode; The end of the longitudinal tie d that three structures are identical is fixed on longitudinal tie seat J, longitudinal tie seat K and the longitudinal tie seat L through welding manner, and the longitudinal tie d other ends that three structures are identical are fixing with the ground welding respectively.The identical vertical actuator b of two structures is connected with hydraulic power unit through pipeline with oil inlet and outlet on the horizontal actuator e.
Consult Fig. 7 to Figure 10, described EMU power train assembly reliability test C accompanies examination speed reduction unit bent plate support g and one to accompany examination speed reducer assembly h to form by an EMU power train assembly support platform f, one.
EMU power train assembly support platform f is a rectangular case body structural member, and EMU power train assembly support platform f can adopt the method for casting to process.EMU power train assembly support platform f upper surface is provided with T type groove; Accompany examination speed reducer assembly h to pass through T type bolt to EMU power train assembly support platform f, accompany the axis of symmetry of accompanying examination reducer shaft 5 among the examination speed reducer assembly h parallel with vertical plane of symmetry of EMU power train assembly support platform f.The design of EMU power train assembly support platform f upper surface T type groove also can be fixed various Other Instruments and device flexibly, makes EMU power train assembly support platform f become an omnipotent immobilization carrier.Accompany examination speed reduction unit bent plate support g also through the left end of T type bolt to EMU power train assembly support platform f; Accompany the symmetrical plane of examination speed reduction unit bent plate support g vertical with vertical plane of symmetry of EMU power train assembly support platform f; Accompany examination speed reduction unit bent plate support g supporting the pinion end of accompanying the examination speed reduction unit, make and accompany the examination speed reduction unit steadily fixing.
Accompanying examination speed reduction unit bent plate support g is structure of right angle tyoe spare, is made up of horizontal edge and longitudinal edge.Horizontal edge realizes accompanying examination speed reduction unit bent plate support g to be fixed on the EMU power train assembly support platform f through bolt; The left and right sides of longitudinal edge is processed with two vertical T shape grooves from top to bottom respectively; Can install or lay down feet easily, can also come the adjustable support pin according to the height of the pinion end of accompanying the examination speed reduction unit at the upper-lower position of accompanying on the examination speed reduction unit bent plate support g longitudinal edge.
Consult Figure 11 to Figure 14, described tested drive motor fixedly hanging seat device c can be completely fixed tested drive motor and bear suffered each of tested drive motor to power.Tested drive motor fixedly hanging seat device c comprises the parallels 3 tested drive motor lower padding iron 4 identical with two block structures on the identical tested drive motor of the fixing square rail of the tested drive motor T type groove that fixedly hanging seat 1, two block structures are identical 2, two block structures.
Described tested drive motor fixedly hanging seat 1 is one and passively strengthens the structural members that gusset constitutes by a base plate, back up pad and 3～5; Back up pad is vertically fixed on the base plate, and gussets are strengthened in (welding) fixing 3～5 in the back of back up pad and between above the base plate.Three limits of base plate are evenly equipped with the through hole that passes bolt.The front of back up pad is provided with the T shape groove that the fixing square rail 2 of T type groove is installed in 3～5 vertical being used to.
The structural member that the fixing square rail 2 of described T type groove is cuboids; One side at the fixing square rail 2 of T type groove is vertically processed 2 T type grooves that are parallel to each other along it; Between 2 T type grooves that are parallel to each other, be evenly equipped with 3～5 through holes that pass bolt, the another side of the fixing square rail 2 of T type groove promptly with tested drive motor fixedly the positive contacted one side of the back up pad in the hanging seat 1 be smooth flat.
Tested drive motor lower padding iron 4 is structural members of a cuboid; On tested drive motor lower padding iron 4 one small end faces, a boss is set centrally, on the promptly parallel face of tested drive motor lower padding iron 4 one big faces and along it, vertically vertically processes 3 through holes that pass bolt with vertical plane of symmetry of the boss that centrally is provided with.
The fixing square rail 2 of the identical T type groove of two block structures respectively through bolt to the fixing upper and lower of the back up pad in the hanging seat 1 of tested drive motor.Parallels 3 is bolted to the left end and the right-hand member of the fixing square rail 2 of T type groove on top respectively on the identical tested drive motor of two block structures through the T type, and the identical tested drive motor lower padding iron 4 of two block structures is bolted to the left end and the right-hand member of the identical fixing square rail 2 of T type groove of the structure of bottom respectively through the T type.Distance on the identical tested drive motor of two block structures between the parallels 3 is confirmed by the last stiff end size of tested drive motor.Distance between the identical tested drive motor lower padding iron 4 of two block structures is confirmed by the following stiff end size of tested drive motor.
Consult Figure 15 and Figure 16, described accompany examination speed reducer assembly h comprise one accompany examination reducer shaft 5, two structures identical accompany examination reducer shaft bearing 6, a round nut that mounting flange 7 is identical with two nested structures and a stop washer 8.
Accompanying examination reducer shaft 5 is the multidiameters that a shaft shoulder is set respectively in two ends, and one-tenth is rotationally connected in the examination reducer shaft bearing 6 to accompany examination reducer shaft 5 two ends to be installed in identical the accompanying of structure respectively.Every inboard of accompanying examination reducer shaft bearing 6 is connected with the right side or the left side contact of labyrinth type O-ring seal 12 in accompanying examination reducer shaft bearing 6 by the shaft shoulder of accompanying examination reducer shaft 5, and the other end of labyrinth type O-ring seal 12 contacts with the angular contact ball bearing 11 interior right sides of encircling or left side on accompanying examination reducer shaft bearing 6 and is connected.Accompany examination reducer shaft 5 fixing by round nut and stop washer 8 at an end of accompanying examination reducer shaft bearing 6 outsides.Wherein, accompany in the examination reducer shaft bearing 6 for every two angular contact ball bearings 11 that structure is identical are installed, angular contact ball bearing 11 is face-to-face installations, has guaranteed to accompany examination reducer shaft bearing 6 to have enough axial carrying capacities.
Consult Figure 17, the described examination reducer shaft bearing 6 of accompanying comprises a bearing seat housing 9, the bearing cover 10 that a pair of structure is identical, the angular contact ball bearing 11 labyrinth type O-ring seal 12 identical with a pair of structure that a pair of structure is identical.
The upper end of bearing seat housing 9 is processed with horizontal ladder hole, and the aperture that two ends are used for the hole of established angle contact ball bearing 11 equates and greater than the diameter of interstitial hole.The angular contact ball bearing 11 that a pair of structure is identical is installed in the wide-aperture hole, bearing seat housing 9 two ends, the right side of angular contact ball bearing 11 outer collar bearings that a pair of structure is identical and left side respectively with bearing seat housing 9 two ends macropores in left anchor ring be connected with right anchor ring contact.The outside of the angular contact ball bearing 11 that two structures are identical is the identical bearing cover 10 of mounting structure respectively; The left side of the end face of the dome ring body on the bearing cover 10 and angular contact ball bearing 11 outer collar bearings is connected with the right side contact, and the bearing cover 10 that two structures are identical is fixedly connected with the two ends of bearing seat housing 9 through bolt.The labyrinth type O-ring seal 12 that two structures are identical is installed in respectively between the angular contact ball bearing 11 and bearing cover 10 at bearing seat housing 9 two ends, plays the effect of oil sealing and sealing gland.Accompany an end of examination reducer shaft 5 to insert among the endoporus of angular contact ball bearing 11; Accompany the shaft shoulder on the examination reducer shaft 5 to be connected with labyrinth sealing circle 12 right sides or left side contact, the other end of labyrinth sealing circle 12 is connected with the right side or the left side contact of ring in the angular contact ball bearing 11 again.
EMU power train assembly reliability test bench principle of work
Crossbeam a lower surface (bottom surface) in the EMU power train assembly reliability test bench is gone up the actuator Connection Block that is provided with two vertical actuator b that structure is identical is installed; Crossbeam a right side adjacent and be mutually on the actuator Connection Block at right angle a horizontal actuator e is installed with longitudinal tie seat K; Positive longitudinal tie seat J, the longitudinal tie seat K of crossbeam a installs three longitudinal tie d that structure is identical with longitudinal tie seat L, and these 3 actuator drive the crossbeam a simulation Three Degree Of Freedom vibration operating mode in the EMU power train assembly reliability test bench.On experimental test platform crossbeam a, be fixed with fixedly hanging seat device c of tested drive motor, this tested drive motor fixedly hanging seat device c can be completely fixed tested drive motor and bear suffered each of tested drive motor to power.
Tested drive motor is connected with the speed end of accompanying the examination speed reduction unit, accompanies examination reducer shaft 5 and then is delivered to universal coupling with spider D through accompanying the examination speed reduction unit to transfer torque to.Adopt universal coupling with spider D can guarantee high rotational speed, when transmitting moment of torsion, can obtain simultaneously certain angular deflection and radially, axial displacement.Universal coupling with spider D passes to the transition axis among the power transmission flexure test device A with moment of torsion again.Transition axis can also be born labile factors such as the moment of flexure brought by universal coupling with spider D and vibration when moment of torsion is passed to torque sensor; Thereby guarantee torque sensor generation data stabilization, measuring accuracy height, and it is bad well to protect torque sensor not got rid of.Frequency modulation motor, makes by the examination drive motor to reach declared working condition to being loaded by the examination drive motor according to the torque sensor feedback data.Simultaneously between frequency modulation motor and torque sensor, hydraulic safety coupling is installed, purpose is to prevent that moment of torsion is excessive and test macro is caused damage.
Embodiment adopts and adoptable standard parts and components detail list:
1.2 the identical vertical actuator b of individual structure and horizontal actuator e adopt is stroke hydraulic cylinder series such as double piston-rod constant speed; According to test by the difference of examination gear case N weight model etc.; Can adopt the hydraulic cylinder of different tonnages; The hydraulic cylinder tonnage that this instance adopts is 30 tons, and throw of poston is ± 300mm.
2. because the motor-car speed of a motor vehicle that testing table is tested is very high; In order accurately to simulate tested drive motor real-world operation operating mode; The torque of whole EMU power train assembly reliability test bench output is very big; Each rotating speed also can be very high, so just require to accompany the angular contact ball bearing 11 in the examination reducer shaft bearing 6 must possess very good usability, so we selected for use the FAG profile shaft of German import to hold.
3. what the universal coupling with spider D in this instance adopted is the universal coupling with spider of SWCBH model.
Claims (7)
1. EMU power train assembly reliability test bench; Comprise power transmission flexure test device (A) and EMU power train assembly reliability test (C); It is characterized in that; Described EMU power train assembly reliability test bench also comprises Three Degree Of Freedom vibration simulation test unit (B); Three Degree Of Freedom vibration simulation test unit (B) is installed on the ground; Three Degree Of Freedom vibration simulation test unit (B) and the EMU power train assembly reliability test (C) that is installed on the ground are placed side by side; The parallel distance of the EMU power train assembly support platform (f) in crossbeam (a) in the Three Degree Of Freedom vibration simulation test unit (B) and the EMU power train assembly reliability test (C) is 20～40mm; The last workplace of the crossbeam (a) in the Three Degree Of Freedom vibration simulation test unit (B) and the last workplace of the EMU power train assembly support platform (f) in the EMU power train assembly reliability test (C) are in the same surface level; Three Degree Of Freedom vibration simulation test unit (B) is connected with power transmission flexure test device (A) on being installed in ground through horizontal actuator (e), and power transmission flexure test device (A) is connected through universal coupling with spider (D) with EMU power train assembly reliability test (C);
Described Three Degree Of Freedom vibration simulation test unit (B) comprises crossbeam (a), the vertical actuator (b) that two structures are identical, tested drive motor longitudinal tie (d) that fixedly hanging seat device (c), three structures are identical and horizontal actuator (e);
The upper end of the vertical actuator (b) that two structures are identical is connected with actuator Connection Block on crossbeam (a) lower surface through bolt; Laterally actuator (e) left end and actuator Connection Block that be mutually right angle adjacent with the position with longitudinal tie seat K on the crossbeam (a) through bolt is connected; Identical longitudinal tie (d) end of three structures respectively and the longitudinal tie seat J on the crossbeam (a), longitudinal tie seat K and longitudinal tie seat L welding fixing; Tested drive motor fixedly hanging seat device (c) is bolted to crossbeam (a) through the T type and goes up on the workplace, tested drive motor fixedly on the plane of symmetry and the crossbeam (a) of hanging seat device (c) the long limit of workplace vertical.
2. according to the described EMU power train of claim 1 assembly reliability test bench; It is characterized in that described tested drive motor fixedly hanging seat device (c) comprises parallels (3) the tested drive motor lower padding iron (4) identical with two block structures on the identical tested drive motor of the fixing square rail (2) of the tested drive motor T type groove that fixedly hanging seat (1), two block structures are identical, two block structures;
The fixing square rail (2) of the identical T type groove of two block structures is respectively through being bolted to the fixedly upper and lower of the back up pad in the hanging seat (1) of tested drive motor; Parallels (3) is bolted to the left end and the right-hand member of the fixing square rail (2) of T type groove on top respectively on the identical tested drive motor of two block structures through the T type; The tested drive motor lower padding iron (4) that two block structures are identical is bolted to the left end and the right-hand member of the fixing square rail (2) of T type groove of bottom respectively through the T type; Distance on the identical tested drive motor of two block structures between the parallels (3) confirmed by the size of the last stiff end of tested drive motor, and the distance between the identical tested drive motor lower padding iron (4) of two block structures is confirmed by the size of the following stiff end of tested drive motor.
3. according to the described EMU power train of claim 2 assembly reliability test bench; It is characterized in that; Described tested drive motor fixedly hanging seat (1) is one and passively strengthens the structural members that gusset constitutes by a base plate, back up pad and 3～5; Back up pad is vertically fixed on the base plate; Weld fixing 3～5 in the back of back up pad with between above the base plate and strengthen gussets, three limits of base plate are evenly equipped with the strip through hole that passes bolt, and the front of back up pad is provided with the T-slot that the fixing square rail (2) of T type groove is installed in 3～5 vertical being used to.
4. according to the described EMU power train of claim 2 assembly reliability test bench; It is characterized in that; The fixing square rail (2) of described T type groove is the structural member of a cuboid; One side at the fixing square rail (2) of T type groove is vertically processed 2 T type grooves that are parallel to each other along it; Between 2 T type grooves that are parallel to each other, be evenly equipped with 3～5 through holes that pass bolt, the another side of the fixing square rail (2) of T type groove promptly with tested drive motor fixedly the positive contacted one side of the back up pad in the hanging seat (1) be smooth flat;
Parallels on the tested drive motor (3) is the structural member of a cuboid, and parallels on tested drive motor (3) is gone up and vertically vertically processed 3 through holes that pass bolt along it;
Tested drive motor lower padding iron (4) is the structural member of a cuboid, on tested drive motor lower padding iron (4) small end face, a boss is set centrally, upward and along it vertically vertically processes 3 through holes that pass bolt at tested drive motor lower padding iron (4).
5. according to the described EMU power train of claim 1 assembly reliability test bench; It is characterized in that, described EMU power train assembly reliability test (C) by EMU power train assembly support platform (f), accompany examination speed reduction unit bent plate support (g) to try speed reducer assembly (h) and form with accompanying;
EMU power train assembly support platform (f) is a rectangular case body structural member; EMU power train assembly support platform (f) upper surface is provided with T type groove; Accompany examination speed reducer assembly (h) to arrive on the EMU power train assembly support platform (f) through T type bolt; Accompany the axis of symmetry of accompanying examination reducer shaft (5) in the examination speed reducer assembly (h) parallel with vertical plane of symmetry of EMU power train assembly support platform (f); Accompany examination speed reduction unit bent plate support (g) through the left end of T type bolt, accompany the symmetrical plane of examination speed reduction unit bent plate support (g) vertical with vertical plane of symmetry of EMU power train assembly support platform (f) to EMU power train assembly support platform (f).
6. according to the described EMU power train of claim 5 assembly reliability test bench; It is characterized in that, described accompany examination speed reducer assembly (h) to comprise to accompany examination reducer shaft (5), two structures identical accompany examination reducer shaft bearing (6), round nut and stop washer (8) that mounting flange (7) is identical with two nested structures;
Accompanying examination reducer shaft (5) is a multidiameter that a shaft shoulder is set respectively in two ends; One-tenth is rotationally connected in the examination reducer shaft bearing (6) to accompany examination reducer shaft (5) two ends to be installed in identical the accompanying of structure respectively; Every inboard of accompanying examination reducer shaft bearing (6) is connected with the right side or the left side contact of labyrinth type O-ring seal (12) in accompanying examination reducer shaft bearing (6) by the shaft shoulder of accompanying examination reducer shaft (5), accompanies examination reducer shaft (5) accompanying the end outside the examination reducer shaft bearing (6) to be fixed by round nut and stop washer (8).
7. according to the described EMU power train of claim 5 assembly reliability test bench; It is characterized in that the described examination reducer shaft bearing (6) of accompanying comprises bearing seat housing (9), 2 bearing cover (10), 2 angular contact ball bearings (11) and 2 labyrinth type O-ring seals (12) that structure is identical that structure is identical that structure is identical;
2 identical angular contact ball bearings (11) of structure are installed on respectively in the wide-aperture hole, bearing seat housing (9) two ends; The right side of angular contact ball bearing (11) outer collar bearing that 2 structures are identical and left side respectively with bearing seat housing (9) two ends macropore in left anchor ring contact with right anchor ring and be connected; The outside of the angular contact ball bearing (11) that 2 structures are identical is the identical bearing cover (10) of mounting structure respectively; The left side of the end face of the dome ring body on the bearing cover (10) and angular contact ball bearing (11) outer collar bearing is connected with the right side contact; 2 identical bearing covers (10) of structure are fixedly connected with the two ends of bearing seat housing (9) through bolt; The labyrinth type O-ring seal (12) that two structures are identical is installed in respectively between the angular contact ball bearing (11) and bearing cover (10) at bearing seat housing (9) two ends; Labyrinth sealing circle (12) right side or left side are connected with shaft shoulder contact on accompanying examination reducer shaft (5), and right side of encircling in the other end of labyrinth sealing circle (12) and the angular contact ball bearing (11) or left side contact and be connected.
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| CN2010105903143A CN102095578B (en) | 2010-12-16 | 2010-12-16 | High-speed train transmission system assembly reliability test bed |
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