CN209356198U - A kind of precision speed reduction device bending stiffness test device - Google Patents
A kind of precision speed reduction device bending stiffness test device Download PDFInfo
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- CN209356198U CN209356198U CN201920291622.2U CN201920291622U CN209356198U CN 209356198 U CN209356198 U CN 209356198U CN 201920291622 U CN201920291622 U CN 201920291622U CN 209356198 U CN209356198 U CN 209356198U
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Abstract
The utility model discloses a kind of precision speed reduction device bending stiffness test devices, the retarder mounting base including pedestal and positioned at pedestal upper end and for fixing precision speed reduction device；The axis horizontal of precision speed reduction device is arranged, and input shaft is fixed by inputting fixing axle, and the outlet side of precision speed reduction device is equipped with coaxial loading axis；The free end of loading axis is equipped with radial loading device radially above, and the free end of loading axis is equipped with the displacement sensor being oppositely arranged with radial loading device radially below, and the free end of loading axis is equipped with axial loading device axially away from precision speed reduction device side.Measurement for precision speed reduction device bending stiffness is realized by the utility model, and guarantees measurement accuracy, to retarder Bending Stiffness Analysis, reduces precision speed reduction device in industrial robot for the reliability effect of each subsystem, and can effectively improve its service life.
Description
Technical field
The utility model relates to mechanical engineering industry, precision mechanical transmission technical field, specifically a kind of precision subtracts
Fast device bending stiffness test device.
Background technique
With the continuous development of intelligence manufacture industry and the continuous promotion of manufacturing industry human cost, with automatic in industrial circle
Change the artificial demand of mechanical replacement and phenomenon is more and more, intelligence manufacture becomes the Main way of development, wherein industrial robot
It is considered as realizing the key of target, and precision speed reduction device is one of kernel component of industrial robot.Property each to retarder
The research of energy index is particularly important, and the bending stiffness performance indicator especially in retarder directly affects the precision of whole system,
Accuracy directly affects the reliability of each subsystem.
Traditional bending strength measuring device is that retarder is mounted on to designated position, and fixed input shaft makes in output shaft
Power F is gradually increased by zero with tension-compression sensor, beats the angle for measuring output end on output shaft relative to installation base surface with dial gauge
Displacement, and data are recorded one by one, make corresponding curve graph.Traditional measurement method leads to complicated and high accurate speed reducer
It crosses dial gauge to measure angular displacement this method there are significant limitations, not can guarantee reliability and high-performance.
Utility model content
According to technical problem set forth above, and provide a kind of precision speed reduction device bending stiffness test device.This is practical new
Axial direction of the type by using force sensor measuring device, radial load are led to after directly measuring displacement with contact probe sensor
It crosses and deflection angle is calculated, the measurement accuracy of sensor is more accurate, and the accuracy of retarder bending strength is effectively guaranteed；
The utility model applies in precision speed reduction device, the measurement of achievable bending stiffness, and guarantees its accuracy.The utility model is adopted
Technological means is as follows:
A kind of precision speed reduction device bending stiffness test device, including pedestal and positioned at the pedestal upper end and for fixing
The retarder mounting base of precision speed reduction device；
The axis horizontal of the precision speed reduction device is arranged, and input shaft is fixed by inputting fixing axle, the accurate deceleration
The outlet side of device is equipped with coaxial loading axis (the precision speed reduction device installation axle)；
The free end of the loading axis is equipped with radial loading device radially above, and the output end of the radial loading device is set
Have and is pressed in the radial pressure type load type sensor test side of the free end of the loading axis radially above, the freedom of the loading axis
End is equipped with the displacement sensor that is oppositely arranged with the radial loading device radially below, and the free end shaft of the loading axis is to remote
It is equipped with axial loading device from the precision speed reduction device side, the output end of the axial loading device, which is equipped with, is pressed in the load
The upward axial pressure type load type sensor test side of the free end shaft of axis.
The input fixing axle is equipped with input fixing axle mounting bracket, and input fixing axle mounting bracket lower end passes through
First sliding block is slidably connected with the first guide rail for being located at the pedestal upper end, and first guide rail slows down along the precision is parallel to
The axis direction of device extends to the retarder mounting base, is additionally provided with is pressed in first sliding block along first guide rail thereon
The first fixed guide rail latch segment in the retarder mounting base；
The input fixing axle inputs axis connection by key and the precision speed reduction device, ensure that along the precision speed reduction device
Axial movement has sufficient space.
The radial loading device includes radial sleeve, and the radial direction sleeve upper end is hollow and is pacified by radial loading device
It shelves and is connect with the retarder mounting base, the radial direction sleeve lower end has the radial pressure type load type sensor test side
The hole of stretching, slidably connect can be along the radial guide sleeve that the free end of the loading axis moves radially, institute in the radial direction sleeve
The top and bottom for stating radial guide sleeve are equipped with the radial screw rod connection of the first steel retaining ring, and the radial direction screw rod passes through the radial direction
Loading device mounting rack and connect with it by thread bush, the radial direction guide sleeve open at its lower end, in be equipped with radial spring, it is described
The radial pressure type is born by the first flange disk being connect with the radial pressure type load type sensor lower end of radial spring
Lotus type sensor test side is pressed in the free end of the loading axis radially above, the radial spring both ends respectively with the radial direction
Guide sleeve is connected with the first flange disk.
Institute's displacement sensors two sides are respectively equipped with the sensor mounting rod connecting with the retarder mounting base；
Pass through upper sensor mounting blocks and lower sensor between institute's displacement sensors and two sensor mounting rods
Mounting blocks；
Between the upper sensor mounting blocks and institute's displacement sensors, the lower sensor mounting blocks and the displacement are passed
The sensor installation thread bush being socketed on institute's displacement sensors is equipped between sensor；
Between the upper sensor mounting blocks and the sensor mounting rod, the lower sensor mounting blocks and the sensing
The sensor installation thread bush being socketed on the sensor mounting rod is equipped between device mounting rod；
Sensor installation nut is socketed on the sensor installation thread bush.
The axial loading device includes axial sleeve, and the axial sleeve is equipped with axial loading device mounting rack, institute
Stating axial loading device mounting rack includes the after-poppet connecting with the axial sleeve rear end, is connect with the axial sleeve outer wall
Fore-stock and be used to support the bottom plate of the after-poppet and the fore-stock, set between the after-poppet and the fore-stock
There is the pressing plate for connecting the axial loading device mounting rack with the retarder mounting base, the retarder mounting base is equipped with
Groove corresponding with the bottom plate, the pedestal upper end are equipped with the axis direction that two edges are parallel to the precision speed reduction device and prolong
The second guide rail in the groove is extended to, the bottom plate is slidably connected by the second sliding block and second guide rail, and described second
The second guide rail latch segment is additionally provided on guide rail, and (the second guide rail latch segment moves along second guide rail, is pressed in described second
On sliding block, cooperate with the pressing plate and fix the axial loading device mounting rack), the axial sleeve front end has the axis
The hole stretched out to pressure type load type sensor test side, the axial sleeve rear end is hollow, is slidably connected in the axial sleeve
There is the axial guide sleeve that can be moved axially along the free end of the loading axis, the rear end and front end of the axial direction guide sleeve are equipped with the second steel
The axial screw of retaining ring processed connects, and the axial screw passes through the after-poppet and connect with it by thread bush, the axial direction
Guide sleeve front end is opened wide, and interior to be equipped with axle spring, the front end of the axle spring with the axial pressure type load type by sensing
The second flange disk of device connection by the axial pressure type load type sensor test side be pressed in the free end shaft of the loading axis to
On, the axle spring both ends are connect with the axial guide sleeve and the second flange disk respectively.
The axial loading device can be moved axially along the precision speed reduction device, solve the precision speed reduction device output
Axis, the loading axis, displacement sensor and radial loading device installation question, keep whole device more compact, improve whole
The structure precision of body, and reached the measurement purpose of bending stiffness.
The precision speed reduction device bending stiffness test device further includes and the radial pressure type load type sensor, institute's rheme
The external capture card that displacement sensor is connected with the axial pressure type load type sensor signal；
The external capture card, is configured as collected signal being converted into corresponding measurement data and be shown in upper
In machine.
The free end of the radial direction screw rod and the axial screw is equipped with handle.
The first guide rail latch segment and the second guide rail latch segment include locking block body, are located at the latch segment
Intrinsic gripping block and for driving gripping block gripping block handle for moving in the locking block body.
When test, the precision speed reduction device is installed to the retarder mounting base, and be connected by key fixed input shaft
With input fixing axle, using the precision speed reduction device installation axle be used as loading axis, mounting and adjusting to loading surface, and guarantee and sensor
Contact surface is in horizontality, the radial loading device of installation test radial load on radial loading device mounting rack, in axis
Axial loading device and installation displacement sensor are installed on loading device mounting rack, by the axial loading device described in
Second guide rail is moved to be contacted with the loading axis, is fixed it by installing the pressing plate and the second guide rail latch segment, is pacified
Each sensor signal is connected to the external capture card after the completion of dress, is loaded at the beginning by less than allowable load curve, it is described
Collected signal is converted into corresponding measurement data and is shown in host computer by external capture card, is passed using pressure type load type
Sensor and displacement sensor measure multiple groups load and displacement data, analyze data, and calculate its corresponding bending stiffness.
The utility model has the advantage that
1. realizing the measurement for precision speed reduction device bending stiffness by the utility model, and guarantee measurement accuracy.
2. pair retarder Bending Stiffness Analysis, reduce in industrial robot precision speed reduction device for the reliability of each subsystem
It influences, and its service life can be effectively improved.
The utility model can be widely popularized in fields such as precision mechanical transmissions based on the above reasons.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is done simply to introduce, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the front view of precision speed reduction device bending stiffness test device in specific embodiment of the present utility model.
Fig. 2 is the rearview of precision speed reduction device bending stiffness test device in specific embodiment of the present utility model.
Fig. 3 is the cross-sectional view of precision speed reduction device bending stiffness test device in specific embodiment of the present utility model.
Fig. 4 is the top view of precision speed reduction device bending stiffness test device in specific embodiment of the present utility model.
Fig. 5 is sectional view along A-A in Fig. 3.
Fig. 6 is the portion I enlarged structure schematic diagram in Fig. 5.
Fig. 7 is the portion II enlarged structure schematic diagram in Fig. 5.
Fig. 8 is the portion III enlarged structure schematic diagram in Fig. 5.
Fig. 9 is the portion IV enlarged structure schematic diagram in Fig. 3.
Figure 10 is the portion V enlarged structure schematic diagram in Fig. 3.
Figure 11 is the portion VI enlarged structure schematic diagram in Fig. 3.
Figure 12 is the portion VII enlarged structure schematic diagram in Fig. 2.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
As shown in Fig. 1-Figure 12, a kind of precision speed reduction device bending stiffness test device, including pedestal 1 and be located at the base
1 upper end of seat and the retarder mounting base 3 for being used to fix precision speed reduction device 2；
The axis horizontal of the precision speed reduction device 2 is arranged, and input shaft 4 is fixed by input fixing axle 5, and the precision subtracts
The outlet side of fast device 2 is equipped with coaxial loading axis 6；
The free end of the loading axis 6 is equipped with radial loading device 7, the output of the radial loading device 7 radially above
It holds and is equipped with radial 8 test side of pressure type load type sensor of the free end for being pressed in the loading axis 6 radially above, the loading axis
6 free end is equipped with the displacement sensor 9 being oppositely arranged with the radial loading device 6 radially below, the loading axis 6 from
Axial loading device 10, the output end of the axial loading device 10 are equipped with axially away from 2 side of precision speed reduction device by holding
Equipped with upward axial 11 test side of pressure type load type sensor of the free end shaft for being pressed in the loading axis 6.
The input fixing axle 5, which is equipped with, inputs fixing axle mounting bracket 12, under the input fixing axle mounting bracket 12
End is slidably connected by the first sliding block 13 with positioned at the first guide rail 14 of 1 upper end of pedestal, and first guide rail 14 is along parallel
The retarder mounting base 3 is extended in the axis direction of the precision speed reduction device 2, is additionally provided with thereon by first sliding block 13
The first guide rail latch segment 15 fixed in the retarder mounting base 3 is pressed in along first guide rail 14；
The input fixing axle 5 is connect by key 16 with the precision speed reduction device input shaft 4.
The radial loading device 7 includes radial sleeve 17, and 17 upper end of the radial direction sleeve is hollow and passes through radial loaded
Device mounting rack 18 is connect with the retarder mounting base 3, and radial direction 17 lower end of sleeve has the radial pressure type load type
8 test side of sensor stretch out hole, it is described radial direction sleeve 17 in slidably connect can along the loading axis 6 free end radially move
Dynamic radial guide sleeve 19, the radial screw rod 21 that the top and bottom of the radial direction guide sleeve 19 are equipped with the first steel retaining ring 20 connect,
The radial direction screw rod 21 passes through the radial loading device mounting rack 18 and is connect with it by thread bush 22, the radial direction guide sleeve
19 open at its lower end, interior to be equipped with radial spring 23, the lower end of the radial spring 23 with the radial pressure type load type by passing
Radial 8 test side of pressure type load type sensor is pressed in the freedom of the loading axis 6 by the first flange disk 24 that sensor 8 connects
Radially above, 23 both ends of radial spring are connect with the radial guide sleeve 19 and the first flange disk 24 respectively at end.
9 two sides of institute's displacement sensors are respectively equipped with the sensor mounting rod 25 connecting with the retarder mounting base 3；
Between institute's displacement sensors 9 and two sensor mounting rods 25 by upper sensor mounting blocks 26 and under pass
Sensor mounting blocks 27；
Between the upper sensor mounting blocks 26 and institute's displacement sensors 9, the lower sensor mounting blocks 27 with it is described
The sensor installation thread bush 28 being socketed on institute's displacement sensors 9 is equipped between displacement sensor 9；
Between the upper sensor mounting blocks 26 and the sensor mounting rod 25, the lower sensor mounting blocks 27 and institute
State the sensor installation thread bush 28 for being equipped with and being socketed on the sensor mounting rod 25 between sensor mounting rod 25；
Sensor installation nut 29 is socketed on the sensor installation thread bush 28.
The axial loading device 10 includes axial sleeve 30, and the axial sleeve 30 is installed equipped with axial loading device
Frame 31, the axial loading device mounting rack 31 includes the after-poppet 32 connecting with 30 rear end of axial sleeve, with the axis
The fore-stock 33 that connects to 30 outer wall of sleeve and it is used to support the bottom plate 34 of the after-poppet 32 and the fore-stock 33, it is described
It is equipped between after-poppet 32 and the fore-stock 33 and connects the axial loading device mounting rack 31 and the retarder mounting base 3
The pressing plate 35 connect, the retarder mounting base 31 are equipped with groove corresponding with the bottom plate 34, and 1 upper end of pedestal is equipped with
The axis direction that two edges are parallel to the precision speed reduction device 2 extends to the second guide rail 36 in the groove, the bottom plate 34
It is slidably connected by the second sliding block 37 and second guide rail 36, the second guide rail latch segment is additionally provided on second guide rail 36
37, the hole that there is axial 11 test side of pressure type load type sensor to stretch out for 30 front end of axial sleeve, the axial set
30 rear ends of cylinder are hollow, and the axial direction that can be moved axially along the free end of the loading axis 6 is slidably connected in the axial sleeve 30
The rear end of guide sleeve 38, the axial direction guide sleeve 38 is connect with the axial screw 40 that front end is equipped with the second steel retaining ring 39, the axial direction
Screw rod 40 passes through the after-poppet 32 and is connect with it by thread bush 22, and axial direction 38 front end of guide sleeve is opened wide, and is inside equipped with
Axle spring 41, the front end of the axle spring 41 pass through the second flange that connect with the axial pressure type load type sensor 11
The free end shaft that axial 11 test side of pressure type load type sensor is pressed in the loading axis 6 by disk 42 is upward, the axial direction
41 both ends of spring are connect with the axial guide sleeve 38 and the second flange disk 42 respectively.
The precision speed reduction device bending stiffness test device further includes and the radial pressure type load type sensor 8, described
The external capture card that displacement sensor 9 is connected with axial 11 signal of pressure type load type sensor；
The external capture card, is configured as collected signal being converted into corresponding measurement data and be shown in upper
In machine.
The free end of the radial direction screw rod 21 and the axial screw 40 is equipped with handle 43.
The first guide rail latch segment 15 and the second guide rail latch segment 37 include locking block body 44, positioned at described
Gripping block 45 in locking block body 44 and the clamping for driving the gripping block 45 to move in the locking block body 44
Block handle 46.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of precision speed reduction device bending stiffness test device, it is characterised in that: including pedestal and be located at the pedestal upper end
And the retarder mounting base for fixing precision speed reduction device；
The axis horizontal of the precision speed reduction device is arranged, and input shaft is fixed by inputting fixing axle, the precision speed reduction device
Outlet side is equipped with coaxial loading axis；
The free end of the loading axis is equipped with radial loading device radially above, and the output end of the radial loading device is equipped with pressure
In the radial pressure type load type sensor test side of the free end of the loading axis radially above, the free end diameter of the loading axis
It is equipped with the displacement sensor being oppositely arranged with the radial loading device downwards, the free end of the loading axis is axially away from institute
Precision speed reduction device side is stated equipped with axial loading device, the output end of the axial loading device, which is equipped with, is pressed in the loading axis
The upward axial pressure type load type sensor test side of free end shaft.
2. precision speed reduction device bending stiffness test device according to claim 1, it is characterised in that: the input fixing axle
It is equipped with input fixing axle mounting bracket, the input fixing axle mounting bracket lower end is by the first sliding block and is located at the pedestal
First guide rail of upper end is slidably connected, and first guide rail extends to described along the axis direction for being parallel to the precision speed reduction device
Retarder mounting base is additionally provided with for first sliding block to be pressed in the retarder mounting base along first guide rail thereon and fix
The first guide rail latch segment；
The input fixing axle inputs axis connection by key and the precision speed reduction device.
3. precision speed reduction device bending stiffness test device according to claim 1, it is characterised in that: the radial loaded dress
It sets including radial sleeve, the radial direction sleeve upper end is hollow and passes through radial loading device mounting rack and the retarder mounting base
Connection, the hole that there is the radial pressure type load type sensor test side to stretch out for the radial direction sleeve lower end, the radial direction sleeve
Inside slidably connecting can be along the radial guide sleeve that the free end of the loading axis moves radially, the top and bottom of the radial direction guide sleeve
Radial screw rod connection equipped with the first steel retaining ring, the radial direction screw rod pass through the radial loading device mounting rack and lead to it
Cross thread bush connection, the radial direction guide sleeve open at its lower end, in be equipped with radial spring, the lower end of the radial spring by with institute
The radial pressure type load type sensor test side is pressed in institute by the first flange disk for stating radial pressure type load type sensor connection
State the free end of loading axis radially above, the radial spring both ends connect with the radial guide sleeve and the first flange disk respectively
It connects.
4. precision speed reduction device bending stiffness test device according to claim 1, it is characterised in that: institute's displacement sensors
Two sides are respectively equipped with the sensor mounting rod connecting with the retarder mounting base；
It is installed between institute's displacement sensors and two sensor mounting rods by upper sensor mounting blocks and lower sensor
Block；
Between the upper sensor mounting blocks and institute's displacement sensors, the lower sensor mounting blocks and institute's displacement sensors
Between be equipped be socketed on institute's displacement sensors sensor installation thread bush；
Between the upper sensor mounting blocks and the sensor mounting rod, the lower sensor mounting blocks and the sensor are pacified
The sensor installation thread bush being socketed on the sensor mounting rod is equipped between dress bar；
Sensor installation nut is socketed on the sensor installation thread bush.
5. precision speed reduction device bending stiffness test device according to claim 1, it is characterised in that: the axially loaded dress
It sets including axial sleeve, the axial sleeve is equipped with axial loading device mounting rack, the axial loading device mounting rack packet
The after-poppet connecting with the axial sleeve rear end is included, the fore-stock that connect with the axial sleeve outer wall and is used to support institute
The bottom plate of after-poppet and the fore-stock is stated, is equipped between the after-poppet and the fore-stock and pacifies the axial loading device
The pressing plate connecting with the retarder mounting base is shelved, the retarder mounting base is equipped with corresponding with the bottom plate recessed
Slot, the pedestal upper end are equipped with second that the axis direction that two edges are parallel to the precision speed reduction device extends in the groove
Guide rail, the bottom plate are slidably connected by the second sliding block and second guide rail, are additionally provided with the second guide rail on second guide rail
Latch segment, the hole that there is the axial pressure type load type sensor test side to stretch out for the axial sleeve front end, the axial set
Tube rear end is hollow, and the axial guide sleeve that can be moved axially along the free end of the loading axis is slidably connected in the axial sleeve,
The axial screw that rear end and the front end of the axial direction guide sleeve are equipped with the second steel retaining ring is connect, and the axial screw is after described
Bracket and connect with it by thread bush, the axial direction guide sleeve front end is opened wide, in be equipped with axle spring, the axle spring
Front end is by the second flange disk that connect with the axial pressure type load type sensor by the axial direction pressure type load type sensor
The free end shaft that test side is pressed in the loading axis is upward, the axle spring both ends respectively with the axial guide sleeve and described the
The connection of two ring flanges.
6. precision speed reduction device bending stiffness test device according to claim 1, it is characterised in that: the precision speed reduction device
Bending stiffness test device further includes and the radial pressure type load type sensor, institute's displacement sensors and the axial pressure type
The external capture card of load type sensor signal connection；
The external capture card, is configured as collected signal being converted into corresponding measurement data and is shown in host computer
In.
7. precision speed reduction device bending stiffness test device according to claim 3, it is characterised in that: the radial direction screw rod
Free end is equipped with handle.
8. precision speed reduction device bending stiffness test device according to claim 2, it is characterised in that: the first guide rail lock
Tight block includes locking block body, positioned at the intrinsic gripping block of the latch segment and for driving the gripping block in the locking
The gripping block handle moved in block body.
9. precision speed reduction device bending stiffness test device according to claim 5, it is characterised in that: the axial screw
Free end is equipped with handle.
10. precision speed reduction device bending stiffness test device according to claim 5, it is characterised in that: second guide rail
Latch segment includes locking block body, positioned at the intrinsic gripping block of the latch segment and for driving the gripping block in the lock
The gripping block handle moved in tight block body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291622.2U CN209356198U (en) | 2019-03-06 | 2019-03-06 | A kind of precision speed reduction device bending stiffness test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920291622.2U CN209356198U (en) | 2019-03-06 | 2019-03-06 | A kind of precision speed reduction device bending stiffness test device |
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| CN209356198U true CN209356198U (en) | 2019-09-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682598A (en) * | 2019-03-06 | 2019-04-26 | 大连交通大学 | A kind of precision speed reduction device bending stiffness test device and application |
| CN112161803A (en) * | 2020-09-16 | 2021-01-01 | 上海市轴承技术研究所 | Rolling bearing life-span energy consumption testing machine under combined load |
-
2019
- 2019-03-06 CN CN201920291622.2U patent/CN209356198U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682598A (en) * | 2019-03-06 | 2019-04-26 | 大连交通大学 | A kind of precision speed reduction device bending stiffness test device and application |
| CN112161803A (en) * | 2020-09-16 | 2021-01-01 | 上海市轴承技术研究所 | Rolling bearing life-span energy consumption testing machine under combined load |
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