CN109100137A - A kind of NVH off-line test platform of rear axle reductor - Google Patents
A kind of NVH off-line test platform of rear axle reductor Download PDFInfo
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- CN109100137A CN109100137A CN201810752521.0A CN201810752521A CN109100137A CN 109100137 A CN109100137 A CN 109100137A CN 201810752521 A CN201810752521 A CN 201810752521A CN 109100137 A CN109100137 A CN 109100137A
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- straight line
- driving
- bottom plate
- rear axle
- plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/028—Acoustic or vibration analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
Abstract
The invention discloses a kind of NVH off-line test platforms of rear axle reductor to simulate the drive system of real vehicle driving force and the loading system of simulation real vehicle loading condition including the rear axle box assembly to match with retarder to be tested；Drive system includes the driving assembly for driving end stand frame and being mounted on driving end stand frame, and loading system includes loading end rack and the charging assembly that is mounted on loading end rack；Driving end stand frame includes driving end pedestal, lifter plate, horizontal slide plate and driving bottom plate；Lifter plate is mounted on driving end pedestal by elevating mechanism, and first straight line sliding equipment is provided between horizontal slide plate and lifter plate；Second straight line sliding equipment is provided between driving bottom plate and horizontal slide plate；Loading end rack includes the loading end pedestal set gradually from bottom to top and load bottom plate, loads and is provided with linear moving mechanism between the lower surface of bottom plate and loading end pedestal.The present invention has many advantages, such as reasonable in design, can be suitable for various sizes of rear axle reductor.
Description
Technical field
The present invention relates to NVH detection technique fields, in particular to a kind of NVH off-line test platform of rear axle reductor.
Background technique
NVH is the english abbreviation of noise, vibration and sound vibration roughness (Noise, Vibration, Harshness).It is
Global question of automobile manufacture quality is measured, it is experienced as most directly and most surface to user vehicle.Vehicle
One of the problem of NVH problem is the major vehicle manufacturing enterprise of international automobile industry and parts enterprises concern.There is statistics to show,
Vehicle is to have relationship with the NVH problem of vehicle, and there is nearly 20% R & D Cost consumption in each major company there are about 1/3 failure problems
On the NVH for solving the problems, such as vehicle.
Rear axle reductor is the main component of automobile, is responsible for the transmission of power, while also bringing noise to vehicle, is being slowed down
In the course of work of device, the exception of any one component can all lead to retarder operation irregularity, make an uproar so as to cause retarder generation
Sound, for retarder manufacturing enterprise, carrying out NVH off-line test to retarder is necessary.However, each deceleration
The rear axle reductor model of device manufacturing enterprise production is various, and the installation dimension of the rear axle reductor of different model is also different,
Therefore, the rear axle reductor for how making NVH off-line test platform be suitable for different model becomes urgent problem to be solved.
Summary of the invention
In view of the above shortcomings of the prior art, it is set the technical problems to be solved by the present invention are: how to provide a kind of structure
Meter rationally, can be suitable for the NVH off-line test platform of the rear axle reductor of various sizes of rear axle reductor.
In order to solve the above-mentioned technical problem, present invention employs the following technical solutions:
A kind of NVH off-line test platform of rear axle reductor, which is characterized in that including the rear axle box to match with retarder to be tested
Body component, the rear axle box assembly have the consistent differential mechanism of differential mechanism parameter matched with retarder real vehicle to be tested,
The rear axle box assembly is located at the side of the input terminal of the differential mechanism for the installation side for installing differential mechanism to be tested, makes
When retarder to be tested is mounted on the installation side, the output shaft of retarder to be tested and the input terminal of the differential mechanism are coaxial
Connection；It further include the input terminal for being connected to retarder to be tested and the drive system and two difference for simulating real vehicle driving force
It is connected to the output end of the differential mechanism and simulates the loading system of real vehicle loading condition；The drive system includes being arranged in institute
The driving end stand frame of side where stating the input terminal of differential mechanism, and the driving is axially mounted to along the input terminal of the differential mechanism
The output end of driving assembly on end stand frame, the driving component can be coaxially connected with the input terminal of retarder to be tested；Institute
The loading end rack that loading system includes side where the output end of the differential mechanism is arranged in is stated, and along the defeated of the differential mechanism
Outlet is axially mounted to the charging assembly on the loading end rack, and the output end of the charging assembly is defeated with the differential mechanism
Outlet is coaxially connected；The driving end stand frame include the driving end pedestal set gradually from bottom to top, lifter plate, horizontal slide plate and
Drive bottom plate；The lifter plate is liftably mounted on the pedestal of the driving end by elevating mechanism, the horizontal slide plate
It is provided with first straight line sliding equipment between lower surface and the lifter plate, enables the horizontal slide plate along perpendicular to the difference
The input axis direction of fast device is moved horizontally relative to the lifter plate；It is described driving bottom plate lower surface and the horizontal slide plate it
Between be provided with second straight line sliding equipment, enable it is described driving bottom plate along the differential mechanism input axis direction relative to level
Slide plate level is mobile；The loading end rack includes the loading end pedestal set gradually from bottom to top and loads bottom plate, described to add
It is provided with linear moving mechanism between the lower surface of load floor and the loading end pedestal, enables the load bottom plate along described
The output axis direction of differential mechanism is moved horizontally relative to the loading end pedestal.
Using the above structure, when detection, retarder to be tested is mounted on rear axle box assembly, is then subtracted to be tested
The input terminal of the fast device and output end of driving assembly is coaxially connected to be tested.And for the retarder of different model, only
Rear axle box assembly is needed replacing, is adapted its installation dimension with retarder and its differential mechanism parameter and deceleration to be tested
The matched differential mechanism parameter of device real vehicle is consistent.For matching the rear axle box assembly of different model retarder, differential mechanism
Two output end spacing can change, but due to load bottom plate can be under the action of linear moving mechanism along differential mechanism
Output axis direction is moved horizontally with respect to loading end pedestal, enables the charging assembly being mounted on loading end rack with load bottom
Plate is moved along the output axis direction of differential mechanism, to adapt to the size of the corresponding rear axle box assembly of different model retarder.And
To the change in location of the input terminal of the retarder of different model, elevating mechanism, first straight line sliding equipment and second can be passed through
Linear slide mechanism is adjusted respectively, and the output end of driving assembly and the input terminal of retarder to be tested are coaxially connected
It connects.In this way, enabling monitor station to be suitable for the various sizes of rear axle speed-reducing of different model by the structure of above-mentioned rational design
Device.
Further, load bottom plate lockable mechanism, institute are additionally provided between the load bottom plate and the loading end pedestal
Load bottom plate lockable mechanism is stated to include the load locking plate being vertically mounted on the load bottom plate and be mounted on the loading end
Disc brake on pedestal, the load locking plate is arranged along the moving direction of the load bottom plate, and lower end extends to institute
In the breaker slot for stating butterfly brake.
Using the above structure, so that it may load locking plate be held tightly by disc brake, make to load bottom plate relative to load
End pedestal is fixed, and is conducive to the overall stiffness for increasing loading end rack, is avoided in detection process, loading end rack itself generates vibration
It is dynamic to influence testing result, be conducive to the accuracy for improving testing result.
Further, the linear moving mechanism includes that two parallel and face is arranged in the loading end base upper surface
Linear movement guide rail, and be slidably fit into it is described linear movement guide rail on linear movement sliding block, the load bottom
Plate is fixedly mounted on the linear movement sliding block.
Further, straight line driving mechanism is additionally provided between the load bottom plate and the loading end pedestal, it is described straight
Line driving mechanism includes moving along the linear movement screw rod of the moving direction setting of the load bottom plate and cooperation in the straight line
The both ends of linear movement feed screw nut on dynamic screw rod, the linear movement screw rod are installed in rotation on institute by bearing spider
Loading end pedestal is stated, and one end is coaxially connected with linear movement driving motor；The load bottom plate and the linear movement screw rod
Nut is fixedly connected.
In this way, can use linear movement driving motor drives linear movement screw rod rotation, it, will be straight using feed screw nut pair
The rotary motion of the mobile screw rod of line is converted into the linear motion of linear movement feed screw nut, to control the movement of load bottom plate.
When due to linear movement screw rod one circle of rotation, the linear movement distance for the feed screw nut that moves linearly is leading for linear movement screw rod
Journey, in this manner it is possible to which the moving distance of adjustment load bottom plate, adjustment is more by the rotational angle of control linear movement screw rod
It is convenient accurate.
Further, the elevating mechanism includes vertically-guided mechanism and lift drive mechanism, the vertically-guided mechanism
Including the guide post being vertically mounted below the lifter plate, and the linear bearing being mounted on the driving end pedestal, institute
The lower end for stating guide post is slidably disposed through the linear bearing, and the distance of the linear bearing to ground is greater than the guide post
Length；The lift drive mechanism includes the worm type of reduction gearing being mounted on the driving end pedestal, the worm gear snail
The output end of bar retarder is vertically arranged upward and is connected with elevating screw, and the lifting is run through in the upper end of the elevating screw
Plate, has the elevating screw nut being equipped on the elevating screw, and the elevating screw nut is fixedly mounted on the liter
It drops on plate；The input terminal of the worm type of reduction gearing is connected with lifting driving motor.
Further, the vertically-guided mechanism is provided with two column in the width direction of the lifter plate, and each column is arranged
There are three；There are two the lift drive mechanism is arranged in the length direction of the lifter plate.
Further, the vertically-guided mechanism further includes the vertical hollow pneumatic clamping being mounted on the driving end pedestal
Disk, the vertical hollow air spider are co-axially located at the top of the linear bearing, the guide post pass through it is described it is vertical in
Empty air spider.
Be conducive to mention to realize the locking of lifter plate in this way, can use vertical hollow air spider and hold guide post tightly
Coupling stiffness between high lifter plate and driving end pedestal, the vibration of lifter plate when reducing detection are conducive to the essence for improving detection
True property.
Further, the first straight line sliding equipment includes first straight line guiding mechanism and the first sliding drive mechanism,
The first straight line guiding mechanism includes that three length directions along the lifter plate are disposed side by side on lifter plate upper surface
First straight line slide rail, and be slidably fit into the first straight line sliding slider of the first straight line slide rail,
The horizontal slide plate is fixedly mounted on the first straight line sliding slider；First sliding drive mechanism includes and described
One linear motion guide first straight line sliding screw disposed in parallel, and cooperate on the first straight line sliding screw the
One straight line sliding screw nut, the both ends of the first straight line slide rail are installed in rotation on the liter by bearing spider
It drops on plate, and one end is coaxially connected with the first sliding driving motor；The horizontal slide plate and the first straight line sliding screw spiral shell
Mother is fixedly connected.
Further, the second straight line sliding equipment includes second straight line guiding mechanism and the second sliding drive mechanism,
The second straight line guiding mechanism includes that two width directions along the lifter plate are disposed side by side on table on the horizontal slide plate
The second straight line slide rail in face, and it is slidably fit into the second straight line sliding cunning of the second straight line slide rail
Block, the driving bottom plate are fixedly mounted on the second straight line sliding slider；Second sliding drive mechanism includes and institute
Second straight line slide rail second straight line sliding screw disposed in parallel is stated, and cooperation is on the second straight line sliding screw
Second straight line sliding screw nut, the both ends of the second straight line slide rail are installed in rotation on institute by bearing spider
It states on horizontal slide plate, and two ends are coaxially connected with the second sliding driving motor；The driving bottom plate and the second straight line are slided
Feed screw nut is fixedly connected.
Further, the driving component includes the driving motor, rotary speed torque sensor and driving for being sequentially connected setting
Bearing block, the middle part of the driving bearing block have rotatable drive connection axis, and the shaft end of the driving motor passes through shaft coupling
One end of device and the rotary speed torque sensor is coaxially connected, and the other end of the rotary speed torque sensor passes through shaft coupling
It is coaxially connected with the drive connection axis.
In conclusion the present invention has many advantages, such as reasonable in design, various sizes of rear axle reductor can be suitable for.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the NVH off-line test platform of device.
Fig. 2 is the structural schematic diagram of rear axle box assembly in Fig. 1.
Fig. 3 is the structural schematic diagram of drive system in Fig. 1.
Fig. 4 is the structural schematic diagram of loading system in Fig. 1.
Fig. 5 is the structural schematic diagram for loading splined shaft.
Fig. 6 is the structural schematic diagram of annular retaining ring.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail.
When specific implementation: as shown in Fig. 1 ~ Fig. 6, a kind of NVH off-line test platform of rear axle reductor, including subtract with to be tested
The rear axle box assembly 1 that fast device matches, the rear axle box assembly 1 have differential mechanism matched with retarder real vehicle to be tested
The consistent differential mechanism of parameter, the rear axle box assembly 1 be located at the input terminal of the differential mechanism side be for install to
Test differential mechanism installation side, when being mounted on retarder to be tested on the installation side, the output shaft of retarder to be tested and
The input terminal of the differential mechanism is coaxially connected；Further include the input terminal for being connected to retarder to be tested and simulates real vehicle driving
The drive system 2 of power and two are connected to the output end of the differential mechanism and simulate the loading system 3 of real vehicle loading condition；
The drive system 2 includes the driving end stand frame 21 of side where the input terminal of the differential mechanism is arranged in, and along the differential
The input terminal of device is axially mounted to the driving assembly 22 on the driving end stand frame 21, and the output end of the driving component 22 can
It is coaxially connected with the input terminal of retarder to be tested；The loading system 3 includes being arranged in where the output end of the differential mechanism
The loading end rack 31 of side, and the load group on the loading end rack 31 is axially mounted to along the output end of the differential mechanism
The output end of part 32, the output end and the differential mechanism of the charging assembly 32 is coaxially connected；The driving end stand frame 21 includes
Driving end pedestal 211, lifter plate 212, horizontal slide plate 213 and the driving bottom plate 214 set gradually from bottom to top；The lifter plate
212 are liftably mounted on driving end pedestal 211 by elevating mechanism 215, the lower surface of the horizontal slide plate 213 and
It is provided with first straight line sliding equipment 216 between the lifter plate 212, enables the horizontal slide plate 213 along perpendicular to described
The input axis direction of differential mechanism is moved horizontally relative to the lifter plate 212；The lower surface of the driving bottom plate 214 and the water
It is provided with second straight line sliding equipment 217 between flat runner 213, enables the driving bottom plate 214 along the defeated of the differential mechanism
Enter axis direction to move horizontally relative to horizontal slide plate 213；The loading end rack 31 includes the load set gradually from bottom to top
Pedestal 311 and load bottom plate 312 are held, is provided between the lower surface and the loading end pedestal 311 of the load bottom plate 312 straight
Line mobile mechanism 313 enables the load bottom plate 312 along the output axis direction of the differential mechanism relative to the loading end bottom
Seat 311 moves horizontally.
Using the above structure, when detection, retarder to be tested is mounted on rear axle box assembly, is then subtracted to be tested
The input terminal of the fast device and output end of driving assembly is coaxially connected to be tested.And for the retarder of different model, only
Rear axle box assembly is needed replacing, is adapted its installation dimension with retarder and its differential mechanism parameter and deceleration to be tested
The matched differential mechanism parameter of device real vehicle is consistent.For matching the rear axle box assembly of different model retarder, differential mechanism
Two output end spacing can change, but due to load bottom plate can be under the action of linear moving mechanism along differential mechanism
Output axis direction is moved horizontally with respect to loading end pedestal, enables the charging assembly being mounted on loading end rack with load bottom
Plate is moved along the output axis direction of differential mechanism, to adapt to the size of the corresponding rear axle box assembly of different model retarder.And
To the change in location of the input terminal of the retarder of different model, elevating mechanism, first straight line sliding equipment and second can be passed through
Linear slide mechanism is adjusted respectively, and the output end of driving assembly and the input terminal of retarder to be tested are coaxially connected
It connects.In this way, enabling monitor station to be suitable for the various sizes of rear axle speed-reducing of different model by the structure of above-mentioned rational design
Device.
When implementation, load bottom plate lockable mechanism is additionally provided between the load bottom plate 312 and the loading end pedestal 311
314, the load bottom plate lockable mechanism 314 includes the load locking plate being vertically mounted on the load bottom plate 312 and installation
Disc brake on the loading end pedestal 311, the load locking plate are set along the moving direction of the load bottom plate 312
It sets, and lower end extends in the breaker slot of the butterfly brake.
Using the above structure, so that it may load locking plate be held tightly by disc brake, make to load bottom plate relative to load
End pedestal is fixed, and is conducive to the overall stiffness for increasing loading end rack, is avoided in detection process, loading end rack itself generates vibration
It is dynamic to influence testing result, be conducive to the accuracy for improving testing result.
When implementation, the linear moving mechanism 313 includes that two parallel and face is arranged on the loading end pedestal 311
The linear movement guide rail on surface, and the linear movement sliding block being slidably fit on the linear movement guide rail, it is described to add
Load floor 312 is fixedly mounted on the linear movement sliding block.
When implementation, it is additionally provided with straight line driving mechanism between the load bottom plate 312 and the loading end pedestal 311, institute
Stating straight line driving mechanism includes along the linear movement screw rod of the moving direction setting of the load bottom plate 312 and cooperation described
Rotationally pacified by bearing spider at the both ends of the linear movement feed screw nut to move linearly on screw rod, the linear movement screw rod
Mounted in the loading end pedestal 311, and one end is coaxially connected with linear movement driving motor；The load bottom plate 312 with it is described
Linear movement feed screw nut is fixedly connected.
In this way, can use linear movement driving motor drives linear movement screw rod rotation, it, will be straight using feed screw nut pair
The rotary motion of the mobile screw rod of line is converted into the linear motion of linear movement feed screw nut, to control the movement of load bottom plate.
When due to linear movement screw rod one circle of rotation, the linear movement distance for the feed screw nut that moves linearly is leading for linear movement screw rod
Journey, in this manner it is possible to which the moving distance of adjustment load bottom plate, adjustment is more by the rotational angle of control linear movement screw rod
It is convenient accurate.
When implementation, there are four the settings of load bottom plate lockable mechanism 314, is located at the four of the load bottom plate 312
At angle.
When implementation, the charging assembly 32 includes the loading motor 321 being mounted on the load bottom plate 312 and loading axis
Seat 322 is held, the middle part of the load bearings seat 322 has rotatable load connecting shaft, and the shaft end of the loading motor 321 is logical
It crosses shaft coupling and the load connecting shaft is coaxially connected；The other end of the load connecting shaft is by load bindiny mechanism 4 with after
The output end of bridge box assembly 1 is connected.
When implementation, the load bindiny mechanism 4 includes the load flower being coaxially mounted on the load connecting shaft other end
Key set 41, it is described to load the load splined shaft 42 being fitted on spline housing 41 for connecting rear axle box assembly 1, the load flower
One end of key axis 42 has the external splines to match with the internal spline of the load spline housing 41, and the other end has and rear axle cabinet
The external splines that the internal spline of the output end of component matches.
When implementation, one end that the load spline housing 41 is connected with load connecting shaft, which all has, extends radially outward shape
At ring flange, and be bolted to connection.
When implementation, the load splined shaft 42 includes main shaft 421, and one end of the main shaft 421 has to be added with described
The external splines that the internal spline of spline housing 41 matches is carried, the other end is the lesser Step Shaft of diameter, and the end of the Step Shaft has
External splines；Slideably be set with spline connecting sleeve 422 on the external splines of the Step Shaft, the spline connecting sleeve 422 it is interior
There is the internal spline to match with the external splines of the Step Shaft on hole, have on the outer wall of the spline connecting sleeve 422 with it is rear
The external splines that the internal spline of the output end of bridge box assembly matches；Reset spring is further sleeved on the Step Shaft (in figure not
Show), the both ends of the reset spring are connected to the step surface and the spline connecting sleeve 422 of the main shaft 421 respectively
End, and the reset spring in its natural state when, the outer end of the spline connecting sleeve 422 and the end of the Step Shaft are neat
It is flat.
In this way, in the output end of connection load splined shaft and rear axle box assembly, even if the external splines of spline connecting sleeve
It is not aligned with the internal spline of the output end of rear axle box assembly, only will cause spline connecting sleeve compression reseting spring, once spline
Connector sleeve rotation, so that it may under the thrust of reset spring, spline connecting sleeve be squeezed into rear axle box assembly output end
In internal spline, connection is completed.
When implementation, the end of the Step Shaft also has coaxial mounted circular baffle plate, and the diameter of the circular baffle plate is big
In the minimum diameter of the spline connecting sleeve 422, and it is less than the minimum diameter of the external splines of the spline connecting sleeve 422.
In this way, can not only prevent spline connecting sleeve from falling off from Step Shaft, but also after spline connecting sleeve can be made smoothly to be inserted into
In the internal spline of the output end of bridge box assembly, spline connection transmission is realized.
When implementation, there is the annular groove of coaxial arrangement, the annular groove on the outer end face of the spline connecting sleeve 422
Side radially inward and the inner hole of the spline connecting sleeve 422 connect, the depth of the annular groove and the circle
The consistency of thickness of baffle, and diameter is consistent with the diameter of the circular baffle plate.
When implementation, the end of Step Shaft tool has in the circular baffle plate there are two axially disposed threaded hole
Two bolts hole being correspondingly arranged with the threaded hole, the circular baffle plate are fixed on institute by passing through the bolt of the bolt hole
It states on the threaded hole of Step Shaft.
Since the end of Step Shaft has there are two threaded hole, so that at least one threaded hole can be in the position of disalignment
It sets.In this way, in the rotation process of load connecting shaft, so that it may the phenomenon that preventing two bolts from all loosening, be conducive to
Improve the reliability of connection.
When implementation, the axial connecting line of two threaded holes intersects with the axis of the Step Shaft, and the two is to described
The axis of rank axis is equidistant.
In this way, not only having facilitated manufacture, but also facilitate installation.
When implementation, the one end of the external splines of the spline connecting sleeve 422 outwardly has 45 ° ~ 60 ° of chamfering.
In this way, spline connecting sleeve can be made better centering and to be inserted into internal spline during rotation using chamfering.
When implementation, the main shaft 421 also has the ring of coaxial arrangement on the periphery of one end of the Step Shaft
Shape limiting slot, and the external splines at the end extends to the annular spacing groove, the minimum diameter of the annular spacing groove is less than the end
The minimum diameter of external splines；It is set with annular retaining ring on the annular spacing groove, has and this on the inner hole of the annular retaining ring
The internal spline that the external splines at end matches, so that the internal spline of the annular retaining ring turns to position corresponding with the external splines at the end
When setting, the annular retaining ring can be removed from the main shaft 421；The annular retaining ring is bolted on the load
On spline housing 41, and in the assembled condition, the internal spline mutual dislocation of the two.
When implementation, the elevating mechanism 215 includes vertically-guided mechanism and lift drive mechanism, the vertically-guided mechanism
Guide post including being vertically mounted on 212 lower section of lifter plate, and the linear axis being mounted on the driving end pedestal 211
It holds, the lower end of the guide post is slidably disposed through the linear bearing, and the distance of the linear bearing to ground is greater than described
The length of guide post；The lift drive mechanism includes the worm type of reduction gearing being mounted on the driving end pedestal 211, institute
The output end for stating worm type of reduction gearing is vertically arranged upward and is connected with elevating screw, and institute is run through in the upper end of the elevating screw
Lifter plate 211 is stated, there is the elevating screw nut being equipped on the elevating screw, the elevating screw nut is fixedly mounted
On the lifter plate 211；The input terminal of the worm type of reduction gearing is connected with lifting driving motor.
When implementation, the vertically-guided mechanism is provided with two column in the width direction of the lifter plate 212, and each column is arranged
There are three；There are two the lift drive mechanism is arranged in the length direction of the lifter plate 212.
When implementation, the vertically-guided mechanism further include be mounted on it is vertical hollow pneumatic on the driving end pedestal 211
Chuck, the vertical hollow air spider are co-axially located at the top of the linear bearing, and the guide post passes through described vertical
Hollow air spider.
Be conducive to mention to realize the locking of lifter plate in this way, can use vertical hollow air spider and hold guide post tightly
Coupling stiffness between high lifter plate and driving end pedestal, the vibration of lifter plate when reducing detection are conducive to the essence for improving detection
True property.
When implementation, the first straight line sliding equipment 216 includes first straight line guiding mechanism and the first sliding drive mechanism,
The first straight line guiding mechanism includes that three length directions along the lifter plate 212 are disposed side by side on the lifter plate 212
The first straight line slide rail of upper surface, and it is slidably fit into the first straight line sliding of the first straight line slide rail
Sliding block, the horizontal slide plate 213 are fixedly mounted on the first straight line sliding slider；First sliding drive mechanism includes
Silk is slided in the first straight line with first straight line slide rail first straight line sliding screw disposed in parallel, and cooperation
First straight line sliding screw nut on bar, the both ends of the first straight line slide rail are rotatably mounted by bearing spider
On the lifter plate 212, and one end is coaxially connected with the first sliding driving motor；The horizontal slide plate 213 and described first
Linear slide feed screw nut is fixedly connected.
When implementation, the second straight line sliding equipment 217 includes second straight line guiding mechanism and the second sliding drive mechanism,
The second straight line guiding mechanism includes that two width directions along the lifter plate 212 are disposed side by side on the horizontal slide plate
The second straight line slide rail of 213 upper surfaces, and it is slidably fit into the second straight line of the second straight line slide rail
Sliding slider, the driving bottom plate 214 are fixedly mounted on the second straight line sliding slider；Second sliding drive mechanism
Including sliding in the second straight line with second straight line slide rail second straight line sliding screw disposed in parallel, and cooperation
The both ends of second straight line sliding screw nut on dynamic screw rod, the second straight line slide rail pass through bearing spider rotationally
It is mounted on the horizontal slide plate 213, and two ends are coaxially connected with the second sliding driving motor；The driving bottom plate 214 and institute
Second straight line sliding screw nut is stated to be fixedly connected.
When implementation, the driving component 22 includes driving motor 221, the rotary speed torque sensor 222 for being sequentially connected setting
With driving bearing block 223, the middle part of the driving bearing block 223 has rotatable drive connection axis, the driving motor 221
Shaft end it is coaxially connected by one end of shaft coupling and the rotary speed torque sensor 222, the rotary speed torque sensor
222 other end is coaxially connected by shaft coupling and the drive connection axis.
When implementation, the rotary speed torque sensor 222 is the digital torque sensing that T40B has magnetic pole speed measuring system
Device.
When implementation, the rear axle box assembly 1 includes the cabinet 11 for being equipped with the differential mechanism, is had on the cabinet 11
The installation via hole of coaxial arrangement corresponding with the output end of the differential mechanism passed through for axis；Also have on the outside of the cabinet 11
With the support tube of the installation setting；The rear axle box assembly 1 further includes the support being correspondingly arranged with the support tube
Seat, the support tube of the cabinet 11 are installed in rotation on the support base by bearing.
When implementation, the rear axle box assembly 1 further includes the revolution driving dress being installed therein on a support tube
12 are set, the support tube passes through the device for revolving and driving 12.
When implementation, the rear axle box assembly 1 further includes the lock plate 13 being mounted on another described support tube, and
The disc brake being mounted on support base, the outer ledge of the lock plate 13 are located at the breaker slot of the disc brake
It is interior.
When implementation, the disc brake along the lock plate 13 circumferential setting there are three.
In this way, locking power can be made more uniform, locking is more steady.
When implementation, the device for revolving and driving 12 includes turbine and worm decelerator, and the support tube is mounted on the snail
On the output end of worm and gear deceleration mechanism, the input terminal of the turbine and worm decelerator connects servo motor.
When implementation, the top and bottom of the cabinet 11 are each provided with two hold-down mechanisms 14, and the hold-down mechanism 14 wraps
The corner oil cylinder of the input axis direction setting along the differential mechanism is included, the end of the corner oil cylinder has vertically disposed pressure
Plate enables the pressing plate to compress retarder to be tested when turning to the middle part of the cabinet 11.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not limitation with the present invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of NVH off-line test platform of rear axle reductor, which is characterized in that including the rear axle to match with retarder to be tested
Box assembly (1), the rear axle box assembly (1) have differential mechanism parameter matched with retarder real vehicle to be tested consistent
Differential mechanism, the side that the rear axle box assembly (1) is located at the input terminal of the differential mechanism is for installing differential mechanism to be tested
Installation side, when being mounted on retarder to be tested on the installation side, the output shaft of retarder to be tested and the differential mechanism
Input terminal it is coaxially connected；It further include the input terminal for being connected to retarder to be tested and the driving system for simulating real vehicle driving force
System (2) and two loading systems (3) for being connected to the output end of the differential mechanism and simulating real vehicle loading condition；The drive
Dynamic system (2) include the driving end stand frame (21) of side where the input terminal of the differential mechanism is arranged in, and along the differential mechanism
Input terminal be axially mounted to it is described driving end stand frame (21) on driving assembly (22), the output end of the driving component (22)
It can be coaxially connected with the input terminal of retarder to be tested；The loading system (3) includes the output that the differential mechanism is arranged in
The loading end rack (31) of side where end, and the loading end rack (31) is axially mounted to along the output end of the differential mechanism
On charging assembly (32), the output end of the output end and the differential mechanism of the charging assembly (32) is coaxially connected；The drive
Moved end rack (21) include the driving end pedestal (211) set gradually from bottom to top, lifter plate (212), horizontal slide plate (213) and
It drives bottom plate (214)；The lifter plate (212) is liftably mounted on driving end pedestal by elevating mechanism (215)
(211) on, first straight line sliding equipment is provided between the lower surface and the lifter plate (212) of the horizontal slide plate (213)
(216), make the horizontal slide plate (213) can be along the input axis direction perpendicular to the differential mechanism relative to the lifter plate
(212) it moves horizontally；Second straight line is provided between the lower surface and the horizontal slide plate (213) of driving bottom plate (214)
Sliding equipment (217), make it is described driving bottom plate (214) can along the differential mechanism input axis direction relative to horizontal slide plate
(213) it moves horizontally；The loading end rack (31) includes the loading end pedestal (311) set gradually from bottom to top and load bottom
Plate (312) is provided with linear moving mechanism between the lower surface and the loading end pedestal (311) of load bottom plate (312)
(313), make it is described load bottom plate (312) can along the differential mechanism output axis direction relative to the loading end pedestal
(311) it moves horizontally.
2. the NVH off-line test platform of rear axle reductor as described in claim 1, which is characterized in that the load bottom plate (312)
Load bottom plate lockable mechanism (314), the load bottom plate lockable mechanism are additionally provided between the loading end pedestal (311)
It (314) include being vertically mounted on the load locking plate loaded on bottom plate (312) and being mounted on the loading end pedestal (311)
On disc brake, the load locking plate is along the moving direction setting of load bottom plate (312), and lower end extends to institute
In the breaker slot for stating butterfly brake.
3. the NVH off-line test platform of rear axle reductor as claimed in claim 2, which is characterized in that the linear moving mechanism
(313) include linear movement guide rail of two parallel and face settings in loading end pedestal (311) upper surface, and can slide
Cooperate the linear movement sliding block on the linear movement guide rail dynamicly, the load bottom plate (312) is fixedly mounted on described straight
On the mobile sliding block of line.
4. the NVH off-line test platform of rear axle reductor as claimed in claim 2, which is characterized in that the load bottom plate (312)
Straight line driving mechanism is additionally provided between the loading end pedestal (311), the straight line driving mechanism includes along the load
Linear movement silk of the linear movement screw rod and cooperation of the moving direction setting of bottom plate (312) on the linear movement screw rod
The both ends of stem nut, the linear movement screw rod are installed in rotation on the loading end pedestal (311) by bearing spider, and
One end is coaxially connected with linear movement driving motor；The load bottom plate (312) and the fixed company of the linear movement feed screw nut
It connects.
5. the NVH off-line test platform of rear axle reductor as described in claim 1, which is characterized in that the elevating mechanism (215)
Including vertically-guided mechanism and lift drive mechanism, the vertically-guided mechanism includes being vertically mounted on the lifter plate (212)
The guide post of lower section, and the linear bearing being mounted on driving end pedestal (211), the lower end of the guide post is slidably
Ground passes through the linear bearing, and the distance of the linear bearing to ground is greater than the length of the guide post；The lifting driving
Mechanism includes the worm type of reduction gearing being mounted on driving end pedestal (211), the output of the worm type of reduction gearing
End is vertically arranged upward and is connected with elevating screw, and the lifter plate (211) are run through in the upper end of the elevating screw, the lifting
There is the elevating screw nut being equipped with, the elevating screw nut is fixedly mounted on the lifter plate (211) on screw rod；
The input terminal of the worm type of reduction gearing is connected with lifting driving motor.
6. the NVH off-line test platform of rear axle reductor as claimed in claim 5, which is characterized in that the vertically-guided mechanism
The width direction of the lifter plate (212) is provided with two column, and there are three each column settings；The lift drive mechanism is described
There are two the length direction settings of lifter plate (212).
7. the NVH off-line test platform of rear axle reductor as claimed in claim 5, which is characterized in that the vertically-guided mechanism
It further include the vertical hollow air spider being mounted on driving end pedestal (211), the vertical hollow air spider is coaxial
The top of the linear bearing is set, and the guide post passes through the vertical hollow air spider.
8. the NVH off-line test platform of rear axle reductor as described in claim 1, which is characterized in that the first straight line sliding
Mechanism (216) includes first straight line guiding mechanism and the first sliding drive mechanism, and the first straight line guiding mechanism includes three
The first straight line slide rail of the lifter plate (212) upper surface is disposed side by side on along the length direction of the lifter plate (212),
And it is slidably fit into the first straight line sliding slider of the first straight line slide rail, the horizontal slide plate (213) is solid
Dingan County is on the first straight line sliding slider；First sliding drive mechanism includes and the first straight line slide rail
First straight line sliding screw disposed in parallel, and cooperate the first straight line sliding screw on the first straight line sliding screw
The both ends of nut, the first straight line slide rail are installed in rotation on the lifter plate (212) by bearing spider, and
One end is coaxially connected with the first sliding driving motor；The horizontal slide plate (213) and the first straight line sliding screw nut are solid
Fixed connection.
9. the NVH off-line test platform of rear axle reductor as claimed in claim 8, which is characterized in that the second straight line sliding
Mechanism (217) includes second straight line guiding mechanism and the second sliding drive mechanism, and the second straight line guiding mechanism includes two
The second straight line sliding for being disposed side by side on the horizontal slide plate (213) upper surface along the width direction of the lifter plate (212) is led
Rail, and it is slidably fit into the second straight line sliding slider of the second straight line slide rail, the driving bottom plate (214)
It is fixedly mounted on the second straight line sliding slider；Second sliding drive mechanism includes leading with second straight line sliding
Rail second straight line sliding screw disposed in parallel, and the second straight line on the second straight line sliding screw is cooperated to slide silk
The both ends of stem nut, the second straight line slide rail are installed in rotation on the horizontal slide plate (213) by bearing spider
On, and two ends are coaxially connected with the second sliding driving motor；The driving bottom plate (214) and the second straight line sliding screw spiral shell
Mother is fixedly connected.
10. the NVH off-line test platform of rear axle reductor as described in claim 1, which is characterized in that the driving component (22)
Driving motor (221), rotary speed torque sensor (222) and driving bearing block (223) including being sequentially connected setting, the driving
The middle part of bearing block (223) has rotatable drive connection axis, and the shaft end of the driving motor (221) passes through shaft coupling and institute
The one end for stating rotary speed torque sensor (222) is coaxially connected, and the other end of the rotary speed torque sensor (222) passes through shaft coupling
It is coaxially connected with the drive connection axis.
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| CN201810752521.0A CN109100137B (en) | 2018-07-10 | 2018-07-10 | NVH of rear axle reduction gear rolls off production line and detects platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810752521.0A CN109100137B (en) | 2018-07-10 | 2018-07-10 | NVH of rear axle reduction gear rolls off production line and detects platform |
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| CN109100137A true CN109100137A (en) | 2018-12-28 |
| CN109100137B CN109100137B (en) | 2020-12-08 |
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