CN106053078A - Rotated alternative life test device of bearing - Google Patents
Rotated alternative life test device of bearing Download PDFInfo
- Publication number
- CN106053078A CN106053078A CN201610662424.3A CN201610662424A CN106053078A CN 106053078 A CN106053078 A CN 106053078A CN 201610662424 A CN201610662424 A CN 201610662424A CN 106053078 A CN106053078 A CN 106053078A
- Authority
- CN
- China
- Prior art keywords
- bearing
- control system
- test
- tested
- radial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G01M13/04—Bearings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a rotated alternative life test device of a bearing. The device comprises a work bench, a test chamber, a driving device, an axial loading apparatus, a radial loading device and a PLC control system, wherein a heating device and a test shaft are arranged in the test chamber, a plurality of bearings to be tested are installed on the test shaft along an axis direction with intervals, and an isolation sleeve is arranged between the two adjacent bearing to be tested; the driving device drives the test shaft to rotate through a torque sensor; the axial loading apparatus is arranged on the work bench; the radial loading device is arranged on the work bench; the PLC control system can control work of the heating device, the driving device, the axial loading apparatus and the radial loading device; and the PLC control system is connected to the heating device, the driving device, the axial loading apparatus, the radial loading device and the torque sensor. Operation of a whole test process is simple, a service life of the bearing can be accurately tested and great convenience is brought for test personnel and a user.
Description
Technical field
The present invention relates to endurance testing device technical field, the rotation being related specifically to a kind of bearing replaces life test dress
Put.
Background technology
Bearing, after production completes, needs by rotating alternately life test mostly, can be accurately after having tested
Understand the service life of bearing.
And in prior art, complex for the test device overall structure rotating the alternately life-span of test bearing, survey
The whole process of examination is relatively complicated, it is difficult to tests out bearing real service life, thus brings to tester and user
Bigger inconvenience.
But for the deficiencies in the prior art, developer is necessary to develop a kind of reasonable in design, simple in construction, whole test
Process operation is relatively simple, it is possible to test out the service life of bearing accurately, brings relatively to tester and user
The rotation of big bearing easily replaces endurance testing device.
Summary of the invention
For solving the problem that prior art exists, the object of the invention provides a kind of reasonable in design, simple in construction, whole survey
Examination process operation is relatively simple, it is possible to tests out the service life of bearing accurately, brings to tester and user
The rotation of bigger bearing easily replaces endurance testing device.
For solving above technical problem, the present invention realizes by the following technical solutions:
The rotation of a kind of bearing replaces endurance testing device, it is characterised in that include
One workbench；
One arranges test cabinet on the table, is provided with heater and test axle, in described survey in described test cabinet
Along its axis direction interval, multiple bearing to be tested is installed on examination axle, is provided with between two adjacent bearings to be tested
Spacer；
One for driving test axle to carry out the driving means rotated, and described driving means drives test by torque sensor
Axle rotates；
One axial loading device that can provide axial load for bearing to be tested, described axial loading device is arranged on
On workbench；
One radial loading device that can provide radial load for bearing to be tested, described radial loading device is arranged on
On workbench；
One PLC that can control heater, driving means, axial loading device and radial loading device work controls
System, described PLC control system respectively with heater, driving means, axial loading device, radial loading device and moment of torsion
Sensor connects.
In a preferred embodiment of the invention, described axial loading device includes the first servomotor, the first ball
Screw mandrel, the first sleeve and axially loaded head, the outfan of described first servomotor passes through the first reductor and the first ball wire
The screw mandrel of bar is connected, and described first reductor is installed on the table by the first support, the silk of described first ball screw
Mother is arranged on one end of the first sleeve, and described first sleeve is slidably arranged on first set cylinder base, and described first set cylinder base is pacified
On the table, the other end at described first sleeve is provided with the first pressure transducer to dress, and described first pressure transducer passes through
Axially loaded connecting rod is connected with axially loaded head, and described first pressure transducer is connected with PLC control system communication, and described
One servomotor electrically connects with PLC control system.
In a preferred embodiment of the invention, described radial loading device includes the second servomotor, the second ball
Screw mandrel, the second sleeve and radial loaded head, the outfan of described second servomotor passes through the second reductor and the second ball wire
The screw mandrel of bar is connected, and described second reductor is installed on the table by the second support, the silk of described second ball screw
Mother is arranged on one end of the second sleeve, and described second sleeve is slidably arranged on the second receiver, described second receiver peace
On the table, the other end at described second sleeve is provided with the second pressure transducer to dress, and described second pressure transducer passes through
Radial loaded connecting rod is connected with radial loaded head, and described second pressure transducer is connected with PLC control system communication, and described
Two servomotors electrically connect with PLC control system.
In a preferred embodiment of the invention, the outfan of described driving means passes through Timing Belt and torque sensor
Input be connected, one end of described test axle is arranged on the outfan of torque sensor.
In a preferred embodiment of the invention, described spacer includes inner ring spacer and outer ring spacer, described inner ring every
Being set between the inner ring of bearing to be tested, described outer ring spacer is arranged between the outer ring of bearing to be tested.
In a preferred embodiment of the invention, inside described test cabinet, it is provided with the temperature contacted with inner ring spacer
Sensor, described temperature sensor is connected with PLC control system communication.
Compared with prior art, the present invention uses said structure to make the overall structure of test device relatively simple, whole survey
Examination process operation is relatively simple, it is possible to tests out the service life of bearing accurately, brings to tester and user
Bigger facility.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below knot
Conjunction is specifically illustrating, and the present invention is expanded on further.
With reference to shown in Fig. 1-Fig. 3, the rotation of a kind of bearing be given in figure replaces endurance testing device, including workbench
100, test cabinet 200, driving means 500, axial loading device 300, radial loading device 400 and PLC control system are (in figure not
Illustrate).
It is provided with leg 110, it is possible to effective improve workbench 100 in the course of the work steady in the lower end of workbench 100
Qualitative energy, further increases the accurate performance of test.
Test cabinet is arranged on workbench 100, is provided with heater and test axle 210, in this enforcement in test cabinet 200
In example, heater is heating ring, is provided with multiple bearing 800 to be tested along its axis direction interval on test axle 210,
It is provided with spacer between two adjacent bearings 800 to be tested.
Spacer includes inner ring spacer 920 and outer ring spacer 910, and inner ring spacer 920 is arranged on the interior of bearing 800 to be tested
Between circle, outer ring spacer 910 is arranged between the outer ring of bearing 800 to be tested, and inner ring spacer 920 and outer ring spacer 910 are not
But it is able to ensure that the transmission of axial load, additionally it is possible to the effective stability improved between adjacent bearing 800 to be tested.
Being provided with the temperature sensor contacted with inner ring spacer 920 inside test cabinet 200, temperature sensor is in real time
The temperature of monitoring test cabinet 200, and the temperature signal of monitoring is transferred to PLC control system, when the temperature of test cabinet 200 arrives
During set temperature value, PLC control system controls heater stop work, when chamber temperatures is less than set temperature value, and PLC
Control system controls heater work, is so circulated such that it is able to make bearing 800 to be tested survey at a constant temperature
Examination, effectively raises the accurate performance of test.
Driving means 500 is used for driving test axle 210 to rotate, and driving means 500 is driven by torque sensor 700
Test axle 210 rotates, and torque sensor 700 is arranged on workbench 100 and is positioned at the left side of test cabinet 200, drives dress
Putting 500 inside being arranged on workbench 100, the outfan of driving means 500 is by Timing Belt 600 and torque sensor 700
Input is connected, and one end of test axle 210 is arranged on the outfan of torque sensor 700, drives dress in the present embodiment
Put 500 for motor.
Axial loading device 300 can provide axial load, axial loading device 300 to arrange for bearing 800 to be tested
On workbench 100 and be positioned at the right side of test cabinet 200.
Axial loading device 300 includes first servomotor the 310, first ball screw, the first sleeve 350 and axially loaded
390, the outfan of the first servomotor 310 is connected with the screw mandrel 340 of the first ball screw by the first reductor 320,
First reductor 320 is arranged on workbench 100 by the first support 321, and the screw 330 of the first ball screw is arranged on first
On one end of sleeve 350, the first sleeve 350 is slidably arranged on first set cylinder base 360, and first set cylinder base 360 is arranged on work
On platform 100, the other end at the first sleeve 350 is provided with the first pressure transducer 370, and the first pressure transducer 370 is by axially
Loading connecting rod 380 to be connected with axially loaded 390, the first pressure transducer 370 is connected with PLC control system communication, and first
Servomotor 310 electrically connects with PLC control system.
When axial loading device 300 works, the first servomotor 310 drives the first ball wire by the first reductor 320
The screw mandrel 340 of bar rotates, the first sleeve 350 under the effect of the screw 330 of the first ball screw along first set cylinder base
360 slide, so that being pressed on the bearing 800 to be tested being arranged on test axle 210 rightmost side for axially loaded 390
On outer ring, the axial compressive force transmission that bearing 800 to be tested is born by the first pressure transducer 370 simultaneously controls system to PLC
System, when axial compressive force is equal to when setting pressure, and PLC control system controls the first servomotor 310 and quits work；Test completes
After, PLC control system controls the first servomotor 310 reverse rotation and drives the first sleeve 350 to stop after sliding into initial position
Work.
Radial loading device 400 can provide radial load, radial loading device 400 to arrange for bearing 800 to be tested
On workbench 100 and be positioned at the rear side of test cabinet 200.
Radial loading device 400 includes second servomotor the 410, second ball screw the 420, second sleeve 450 and radial direction
Loading head 490, the outfan of the second servomotor 410 is connected with the screw mandrel 440 of the second ball screw by the second reductor 420
Connecing, the second reductor 420 is arranged on workbench 100 by the second support 421, and the screw 430 of the second ball screw is arranged on
On one end of second sleeve 450, the second sleeve 450 is slidably arranged on the second receiver 460, and the second receiver 460 is arranged on
On workbench 100, the other end at the second sleeve 450 is provided with the second pressure transducer 470, and the second pressure transducer 470 passes through
Radial loaded connecting rod 480 is connected with radial loaded 490, and the second pressure transducer 470 is connected with PLC control system communication,
Second servomotor 410 electrically connects with PLC control system.
When radial loading device 400 works, the second servomotor 410 drives the second ball wire by the second reductor 420
The screw mandrel 440 of bar rotates, the second sleeve 450 under the effect of the screw 430 of the second ball screw along the second receiver
460 slide, so that radial loaded 490 is pressed on the outer ring of the bearing 800 to be tested being arranged on test axle 210
On, the radial pressure transmission that bearing 800 to be tested is born by the second pressure transducer 470 simultaneously to PLC control system, when
Radial pressure is equal to when setting pressure, and PLC control system controls the second servomotor 410 and quits work；After having tested, PLC
Control system controls the second servomotor 410 reverse rotation and drives the second sleeve 450 to quit work after sliding into initial position.
PLC control system respectively with heater, driving means the 500, first servomotor 310 and the second servomotor
410 electrical connection, PLC control system respectively with first pressure transducer the 370, second pressure transducer 470, torque sensor and temperature
Degree sensor communication connects, it is possible to make PLC control system read rotation torque, axial compressive force, radial pressure and operating room in real time
Temperature, it is possible to carry out online record, effectively raises the accurate performance of this endurance testing device test.
The concrete test of the present invention is as follows:
Multiple bearing spacer to be tested are arranged on test axle, are then shut off test cabinet, start PLC control system,
PLC control system controls heater makes test indoor temperature arrive design temperature, sets temperature when the temperature in test cabinet arrives
After degree, PLC control system controls axial loading device provides axial load, simultaneously PLC control system control for bearing to be tested
Radial loading device processed provides radial load for bearing to be tested, when axial load and radial load all arrive the pressure of setting
After, PLC control system controls driving means work, thus tests bearing to be tested.
The present invention uses said structure to make the overall structure of test device relatively simple in sum, and whole test process is grasped
Make relatively simple, it is possible to test out the service life of bearing accurately, to tester and user bring bigger just
Profit.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.The technology of the industry
Personnel, it should be appreciated that the present invention is not restricted to the described embodiments, simply illustrating this described in above-described embodiment and description
The principle of invention, the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these become
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and
Equivalent defines.
Claims (6)
1. the rotation of a bearing replaces endurance testing device, it is characterised in that include
One workbench；
One arranges test cabinet on the table, is provided with heater and test axle, at described test axle in described test cabinet
On along its axis direction interval multiple bearing to be tested is installed, be provided with between two adjacent bearings to be tested every
Set；
One for driving test axle to carry out the driving means rotated, and described driving means drives test axle to enter by torque sensor
Row rotates；
One axial loading device that can provide axial load for bearing to be tested, described axial loading device is arranged on work
On platform；
One radial loading device that can provide radial load for bearing to be tested, described radial loading device is arranged on work
On platform；
One PLC that can control heater, driving means, axial loading device and radial loading device work controls system
System, described PLC control system passes with heater, driving means, axial loading device, radial loading device and moment of torsion respectively
Sensor connects.
The rotation of a kind of bearing the most as claimed in claim 1 replaces endurance testing device, it is characterised in that: described axially loaded
Device includes the first servomotor, the first ball screw, the first sleeve and axially loaded head, the output of described first servomotor
End is connected by the screw mandrel of the first reductor and the first ball screw, and described first reductor is arranged on work by the first support
In station, the screw of described first ball screw is arranged on one end of the first sleeve, and described first sleeve is slidably arranged in
On one receiver, described first set cylinder base is installed on the table, and the other end at described first sleeve is provided with the first pressure and passes
Sensor, described first pressure transducer is connected with axially loaded head by axially loaded connecting rod, described first pressure transducer
Being connected with PLC control system communication, described first servomotor electrically connects with PLC control system.
The rotation of a kind of bearing the most as claimed in claim 1 replaces endurance testing device, it is characterised in that: described radial loaded
Device includes the second servomotor, the second ball screw, the second sleeve and radial loaded head, the output of described second servomotor
End is connected by the screw mandrel of the second reductor and the second ball screw, and described second reductor is arranged on work by the second support
In station, the screw of described second ball screw is arranged on one end of the second sleeve, and described second sleeve is slidably arranged in
On two receivers, described second receiver is installed on the table, and the other end at described second sleeve is provided with the second pressure and passes
Sensor, described second pressure transducer is connected with radial loaded head by radial loaded connecting rod, described second pressure transducer
Being connected with PLC control system communication, described second servomotor electrically connects with PLC control system.
The rotation of a kind of bearing the most as claimed in claim 1 replaces endurance testing device, it is characterised in that: described driving means
Outfan be connected with the input of torque sensor by Timing Belt, one end of described test axle is arranged on torque sensor
Outfan on.
The rotation of a kind of bearing the most as claimed in claim 1 replaces endurance testing device, it is characterised in that: described spacer includes
Inner ring spacer and outer ring spacer, described inner ring spacer is arranged between the inner ring of bearing to be tested, and described outer ring spacer is arranged
Between the outer ring of bearing to be tested.
The rotation of a kind of bearing the most as claimed in claim 5 replaces endurance testing device, it is characterised in that: at described test cabinet
Inside is provided with the temperature sensor contacted with inner ring spacer, and described temperature sensor is connected with PLC control system communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610662424.3A CN106053078A (en) | 2016-08-12 | 2016-08-12 | Rotated alternative life test device of bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610662424.3A CN106053078A (en) | 2016-08-12 | 2016-08-12 | Rotated alternative life test device of bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106053078A true CN106053078A (en) | 2016-10-26 |
Family
ID=57480797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610662424.3A Pending CN106053078A (en) | 2016-08-12 | 2016-08-12 | Rotated alternative life test device of bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106053078A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769034A (en) * | 2016-11-30 | 2017-05-31 | 清华大学 | A kind of bearing accelerated life test platform |
| CN106969913A (en) * | 2017-02-28 | 2017-07-21 | 人本集团有限公司 | Automobile steering device bearing tester |
| CN108801639A (en) * | 2018-07-26 | 2018-11-13 | 索特传动设备有限公司 | Bearing test tooling and system |
| CN109374295A (en) * | 2018-12-04 | 2019-02-22 | 新奥能源动力科技（上海）有限公司 | A kind of bearing performance test device |
| CN109374280A (en) * | 2018-12-04 | 2019-02-22 | 新奥能源动力科技（上海）有限公司 | A kind of bearing rotor system test device |
| CN110186681A (en) * | 2019-06-26 | 2019-08-30 | 宁波慈兴轴承有限公司 | A kind of radial loading device of thin-wall bearing vibration measuring |
| CN111257004A (en) * | 2018-11-30 | 2020-06-09 | 上海天祥质量技术服务有限公司 | Balance car testing arrangement |
| CN112345244A (en) * | 2020-11-03 | 2021-02-09 | 青岛高测科技股份有限公司 | Comprehensive bearing test system, test method and test bed |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10160639A (en) * | 1996-12-02 | 1998-06-19 | Hitachi Powdered Metals Co Ltd | Bearing-testing machine |
| CN1256764A (en) * | 1997-03-18 | 2000-06-14 | 松下电器产业株式会社 | Optical display device |
| CN101430245A (en) * | 2008-12-08 | 2009-05-13 | 洛阳轴研科技股份有限公司 | Dynamic simulation test method and testing machine for plastic support bearing used for suspension |
| CN102840982A (en) * | 2012-07-02 | 2012-12-26 | 清华大学 | Service life verification tester for ceramic bearing |
| CN105486505A (en) * | 2016-01-21 | 2016-04-13 | 湖南科技大学 | Single-pivot double row rolling bearing supporting type rotor comprehensive performance experiment device |
| CN205958259U (en) * | 2016-08-12 | 2017-02-15 | 宁波慈兴精密传动科技有限公司 | Rotatory life -span testing arrangement in turn of bearing |
-
2016
- 2016-08-12 CN CN201610662424.3A patent/CN106053078A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10160639A (en) * | 1996-12-02 | 1998-06-19 | Hitachi Powdered Metals Co Ltd | Bearing-testing machine |
| CN1256764A (en) * | 1997-03-18 | 2000-06-14 | 松下电器产业株式会社 | Optical display device |
| CN101430245A (en) * | 2008-12-08 | 2009-05-13 | 洛阳轴研科技股份有限公司 | Dynamic simulation test method and testing machine for plastic support bearing used for suspension |
| CN102840982A (en) * | 2012-07-02 | 2012-12-26 | 清华大学 | Service life verification tester for ceramic bearing |
| CN105486505A (en) * | 2016-01-21 | 2016-04-13 | 湖南科技大学 | Single-pivot double row rolling bearing supporting type rotor comprehensive performance experiment device |
| CN205958259U (en) * | 2016-08-12 | 2017-02-15 | 宁波慈兴精密传动科技有限公司 | Rotatory life -span testing arrangement in turn of bearing |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769034A (en) * | 2016-11-30 | 2017-05-31 | 清华大学 | A kind of bearing accelerated life test platform |
| CN106769034B (en) * | 2016-11-30 | 2023-06-27 | 清华大学 | Bearing accelerated life test bed |
| CN106969913A (en) * | 2017-02-28 | 2017-07-21 | 人本集团有限公司 | Automobile steering device bearing tester |
| CN108801639A (en) * | 2018-07-26 | 2018-11-13 | 索特传动设备有限公司 | Bearing test tooling and system |
| CN108801639B (en) * | 2018-07-26 | 2024-02-02 | 索特传动设备有限公司 | Bearing test tool and system |
| CN111257004A (en) * | 2018-11-30 | 2020-06-09 | 上海天祥质量技术服务有限公司 | Balance car testing arrangement |
| CN109374295A (en) * | 2018-12-04 | 2019-02-22 | 新奥能源动力科技（上海）有限公司 | A kind of bearing performance test device |
| CN109374280A (en) * | 2018-12-04 | 2019-02-22 | 新奥能源动力科技（上海）有限公司 | A kind of bearing rotor system test device |
| CN109374280B (en) * | 2018-12-04 | 2024-06-04 | 新奥能源动力科技（上海）有限公司 | Bearing rotor system testing device |
| CN110186681A (en) * | 2019-06-26 | 2019-08-30 | 宁波慈兴轴承有限公司 | A kind of radial loading device of thin-wall bearing vibration measuring |
| CN110186681B (en) * | 2019-06-26 | 2024-09-24 | 宁波慈兴轴承有限公司 | Radial loading device for vibration measurement of thin-wall bearing |
| CN112345244A (en) * | 2020-11-03 | 2021-02-09 | 青岛高测科技股份有限公司 | Comprehensive bearing test system, test method and test bed |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106053078A (en) | Rotated alternative life test device of bearing | |
| KR101789965B1 (en) | Inspection apparatus and method for hub bearing | |
| CN101762353B (en) | CVT (Contiuously Variable transmission) axial force test device | |
| CN105973604A (en) | Electric automobile driving motor bearing high temperature high speed high load endurance testing apparatus | |
| CN109781413A (en) | A kind of high-precision rolling bearing retainer stability test device and method | |
| CN101498652A (en) | Taper friction pair performance tester | |
| CN107328577A (en) | Rolling bearing life testing machine | |
| CN205958259U (en) | Rotatory life -span testing arrangement in turn of bearing | |
| CN108152036A (en) | A kind of life detecting device for bearing | |
| CN209878307U (en) | High-low cycle composite fatigue test device for rotor joggle joint structure of turbine engine | |
| CN111323229A (en) | Full-automatic vertical double-row tapered roller bearing dynamic quality detection system and method | |
| CN103737431A (en) | Machine tool cutting force simulation loading device | |
| CN207881876U (en) | Torque measurement testing stand | |
| CN205748909U (en) | A kind of laboratory table analyzed for rolling bearing life | |
| CN208999097U (en) | A kind of rolling bearing equlvalent coefficient of friction measuring device | |
| CN106352830A (en) | Device and system for measuring diameter of outer ring of hub bearings | |
| CN116734788A (en) | Comprehensive synchronous detection device for half shafts | |
| CN103792099B (en) | Comprehensive detection equipment for sunshade products for buildings | |
| CN104019990B (en) | Bearing torque test device | |
| CN204461748U (en) | High-precision minitype bearing life and reliability simulation test unit | |
| CN205991797U (en) | Hub bearing outer ring channel calipers and system | |
| CN109060379A (en) | Rear driving axle transmission efficiency test method | |
| CN106525401B (en) | A kind of endurance testing device and test method of stopping caliper ball screw | |
| CN105067454B (en) | Device and method for detecting tensile strength and compressive strength of concrete by in-situ shearing and splitting method | |
| CN209589474U (en) | A kind of general roller bearing testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20171009 Address after: 315300, No. 188, Xinxing Road, hi tech Industrial Development Zone, Zhejiang, Ningbo, Cixi Applicant after: Cixing Group Co., Ltd. Address before: 315300, No. 188, Xinxing Road, hi tech Industrial Development Zone, Zhejiang, Ningbo, Cixi Applicant before: Ningbo Cixing Precision Transmission Technology Co. Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161026 |