CN205785813U - A kind of RV decelerator torsional rigidity and idle running error are test bed - Google Patents

A kind of RV decelerator torsional rigidity and idle running error are test bed Download PDF

Info

Publication number
CN205785813U
CN205785813U CN201620734143.XU CN201620734143U CN205785813U CN 205785813 U CN205785813 U CN 205785813U CN 201620734143 U CN201620734143 U CN 201620734143U CN 205785813 U CN205785813 U CN 205785813U
Authority
CN
China
Prior art keywords
decelerator
torsional rigidity
idle running
test bed
running error
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.)
Active
Application number
CN201620734143.XU
Other languages
Chinese (zh)
Inventor
郑旭
张亮
刘喜龙
马海波
马文广
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yinchuan power transmission technology Limited by Share Ltd
Original Assignee
YINCHUAN WEILI REDUCER MACHINERY CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by YINCHUAN WEILI REDUCER MACHINERY CO Ltd filed Critical YINCHUAN WEILI REDUCER MACHINERY CO Ltd
Priority to CN201620734143.XU priority Critical patent/CN205785813U/en
Application granted granted Critical
Publication of CN205785813U publication Critical patent/CN205785813U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The utility model discloses a kind of RV decelerator torsional rigidity and idle running error is test bed, including frame, output shaft, transition axis, dividing head, angle measuring mechanism, load maintainer and lining;Described frame is arranged on the table, is used for installing RV decelerator, and transition axis one end is bonded with the input of RV decelerator, the other end and described dividing head drive connection;Output shaft and the outfan drive connection of RV decelerator, described output shaft is installed with load bar;Described load maintainer two ends are connected with described load bar and workbench respectively;Described angle measuring mechanism is connected with described output shaft.This utility model RV decelerator torsional rigidity and idle running error test bed employing transition axis carry out the input of RV reductor input, ensure that the engagement of RV decelerator middle gear can change, so that testing stand can test the torsional rigidity under different engagement, utilize lining to be arranged in frame by RV reductor, conveniently expand again range of application.

Description

A kind of RV decelerator torsional rigidity and idle running error are test bed
Technical field
It is test bed that this utility model relates to RV decelerator, particularly relates to a kind of RV decelerator torsional rigidity and idle running is missed Difference is test bed.
Background technology
Torsional rigidity and idle running error are two important performance indexes of decelerator, accurately measure and evaluate its torsional rigidity And idle running error, it is an important topic in decelerator field.Gear reduction unit, either involute teeth wheel decelerator is still put Line gear decelerator, its torsional rigidity and idle running error all can be varied from along with the difference of the engagement between gear.Cause This, accurately measure decelerator torsional rigidity under different engagements and idle running error, to decelerator theoretical research and reality Application suffers from important meaning.
Traditional decelerator torsional rigidity test experimental bed uses power shaft to fix, and output shaft loads, and measures output shaft and exists The mode of the different corners loaded under moment of torsion weighs the torsional rigidity of decelerator.The power shaft of such laboratory table is connected with frame Together, test cannot change power shaft angle, and then the engagement of change decelerator middle gear, i.e. such laboratory table are only Decelerator torsional rigidity under a certain fixed engagement state can be tested.Traditional decelerator torsional rigidity laboratory table uses thick stick Bar-counterweight load mode, loads lever and passes through on the bonded output shaft being arranged on decelerator, and the end loading lever has hung weight Code, the size of loading moment passes through weight measurement.Such laboratory table is difficult to meet the loading demand of high-mechanic decelerator, and works as When loading lever is in non-standard state, measurement error will be caused.Outfan corner uses angular encoder to measure, angular coding Device is owing to being limited by gratings strips number, and certainty of measurement is difficult to meet the test request of high-accuracy decelerator, measures essence for improving Degree, need to carry out electronic fine-grained, thus add measurement links, bring measurement error, cause the instability of measurement result.
In view of this, special proposition this utility model.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, it is provided that a kind of RV decelerator reverses Rigidity and idle running error are test bed, can test RV decelerator torsional rigidity and idle running error under different engagements.
For solving above-mentioned technical problem, the basic conception of this utility model employing technical scheme is:
A kind of RV decelerator torsional rigidity and idle running error are test bed, including frame, output shaft, transition axis, indexing Head, angle measuring mechanism, load maintainer and lining;
Described frame is arranged on the table, is used for installing RV decelerator, and described transition axis one end is defeated with RV decelerator Enter bonded, the other end and described dividing head drive connection;
Described output shaft and the outfan drive connection of RV decelerator, described output shaft is installed with load bar;
Described load maintainer two ends are connected with described load bar and workbench respectively;
Described angle measuring mechanism is connected with described output shaft;
Described lining is detachably arranged in described frame.
Above-mentioned RV decelerator torsional rigidity and idle running error are test bed, and described lining is disk-like structure, centrally disposed There is reductor installing hole.
Above-mentioned RV decelerator torsional rigidity and idle running error are test bed, and described lining outward flange is provided with and described machine The bolt hole that frame coordinates;The edge of reductor installing hole is provided with the bolt hole coordinated with reductor.
Above-mentioned RV decelerator torsional rigidity and idle running error are test bed, and described lining outward flange is set to step-like.
Above-mentioned RV decelerator torsional rigidity and idle running error are test bed, and described load maintainer includes force transducer, ball Head spherical plain bearing rod end and jack;Described force transducer one end is fixing with the end of described load bar to be connected, and the other end passes through Bulb spherical plain bearing rod end is connected with described jack, and described jack is arranged on described workbench.
Above-mentioned RV decelerator torsional rigidity and idle running error are test bed, and described angle measuring mechanism includes Laser emission Device, interferoscope and reflecting mirror;The dead in line of described laser generator, interferoscope and reflecting mirror.
Above-mentioned RV decelerator torsional rigidity and idle running error are test bed, and described reflecting mirror is fixed on by magnetic stand Output shaft end.
Above-mentioned RV decelerator torsional rigidity and idle running error are test bed, and described interferoscope is fixed on by magnetic stand On workbench.
Above-mentioned RV decelerator torsional rigidity and idle running error are test bed, and described generating laser is arranged on described work On platform.
Above-mentioned RV decelerator torsional rigidity and idle running error are test bed, and described frame is provided with suspension ring.
After using technique scheme, this utility model compared with prior art has the advantages that
1, this utility model RV decelerator torsional rigidity and idle running error test bed employing transition axis carry out RV deceleration Machine input inputs, it is ensured that the engagement of RV decelerator middle gear can change, so that testing stand energy of the present utility model Torsional rigidity under the different engagement of enough tests, utilizes lining to be arranged in frame by RV reductor, and convenient expansion again should Use scope;
2, being installed by reductor installing hole in lining, the lining of different size reductor installing hole can use same machine Different model RV decelerator installed by frame, solves the spy that the decelerator of same model can only be tested by a conventional frame Point, improves the scope of application of equipment;
3, lining outward flange is set to step-like, contributes to retarder-equipped lining to central rack indentation, reduces whole Machine thickness;
4, load maintainer uses bulb spherical plain bearing rod end to connect the force transducer on load bar and jack, and power senses The active force that device records is perpendicular to the arm of force, reduces because the change of load bar rotational angle causes the mistake of sensor measurement Difference, measures the most accurate, it is to avoid product when the loading lever that traditional lever-counterweight load mode causes is in non-standard state Raw measurement error;
5, the principle using laser interference reflection carries out angular surveying, and angular surveying is the most accurate, and certainty of measurement meets The test request of high accurate speed reducer, solves employing angular encoder and measures to be limited by gratings strips number and cause the highest the asking of precision Topic;
6, load maintainer and frame are respectively provided with on the table, contribute to reducing measurement error, improve measuring accuracy;
7, interferoscope, reflecting mirror are all fixedly mounted by magnetic stand, the most readily accessible replacing, are second easy to regulation;
8, frame and generating laser are respectively provided with on the table, contribute to dropping low-angle measurement error;
9, suspension ring are easy to installation and the carrying of equipment complete machine.
Accompanying drawing explanation
Fig. 1 is this utility model RV decelerator torsional rigidity and the test bed structural representation of idle running error.
Fig. 2 is this utility model RV decelerator torsional rigidity and the side cutaway view of idle running error measuring test-bed.
In above-mentioned accompanying drawing, 1, workbench;2, jack;3, bulb spherical plain bearing rod end;4, force transducer;5, load bar; 6, reflecting mirror;7, interferoscope;8, generating laser;9, dividing head;10, transition axis;11, frame;12, RV decelerator;13, output Axle;14, lining.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment, the utility model is described in further detail, to help understanding that this practicality is new The content of type.
As depicted in figs. 1 and 2, this utility model provides a kind of RV decelerator 12 torsional rigidity and idle running error test examination Test platform, including frame 11, output shaft 13, transition axis 10, dividing head 9, angle measuring mechanism, load maintainer and lining 14;Described Frame 11 is arranged on workbench 1, is used for installing the input of RV decelerator 12, one end of transition axis 10 and tested RV decelerator 12 Axle key connects, and the other end clamping of transition axis 10 connects on the scroll chuck of dividing head 9;Described output shaft 13 and RV decelerator 12 Outfan drive connection, described output shaft 13 is installed with load bar 5;Described load maintainer two ends add with described respectively Carry bar 5 and workbench 1 connects;Described angle measuring mechanism is connected with described output shaft 13.Dividing head 9 is fixed on workbench 1. Frame 11 is fixed on workbench 1, and tested RV decelerator 12 is fixedly mounted in frame 11.Transition axis 10 is used to carry out RV deceleration Machine input inputs, it is ensured that the engagement of RV decelerator 12 middle gear can change, so that testing stand of the present utility model The torsional rigidity under different engagement can be tested.Described lining 14 is detachably arranged in described frame.
Described lining 14 is disk-like structure, is provided centrally with reductor installing hole.Lining 14 outward flange is provided with described The bolt hole that frame coordinates;The edge of reductor installing hole is provided with the bolt hole coordinated with reductor.The present embodiment utilizes lining RV reductor is arranged in frame by set 14, is contained in frame by lining 14 after decelerator is arranged on lining 14, it is simple to RV decelerator is installed in frame that (frame is relatively big, and installing decelerator, to need to adjust angle inconvenient, and RV decelerator is arranged on less Lining 14 on convenient).Installed by reductor installing hole in lining 14, the lining 14 of different size reductor installing hole Can install different model RV decelerator by same frame, solving a conventional frame can only enter the decelerator of same model The feature of row test, improves the scope of application of equipment.Additionally, lining 14 outward flange is set to step-like, contribute to equipped with subtracting The lining 14 of speed device, to central rack indentation, reduces complete machine thickness, strengthens facility compact, reduces occupation area of equipment.
Load maintainer includes force transducer 4, bulb spherical plain bearing rod end 3 and jack 2;Described force transducer 4 one end with The end of described load bar 5 is fixing to be connected, and the other end is connected with described jack 2 by bulb spherical plain bearing rod end 3, and described thousand Jin top 2 is arranged on described workbench 1.Load bar 5 is made up of two arm bars.One end of output shaft 13 and the output of decelerator End connects, and two arm bars are respectively welded at the both sides in the middle part of output shaft 13, and the other end of output shaft 13 is connected to angular surveying Mechanism.Point cantact is propped up with load bar 5 in one end of force transducer 4, and the other end of force transducer 4 passes through bulb spherical plain bearing rod end 3 are connected with jack 2, and the registration of force transducer 4 is by the character display reading communicated to connect with this force transducer 4.Very heavy Top 2 includes that base and screw rod, bulb spherical plain bearing rod end 3 are arranged on the screw rod of jack 2, and the base of jack 2 is fixed on On workbench 1.Load maintainer uses bulb spherical plain bearing rod end 3 to connect the force transducer 4 on load bar 5 and jack 2, power The active force that sensor 4 records is perpendicular to the arm of force, reduces because the change of load bar 5 rotational angle causes sensor measurement to be tied The error of fruit, measures the most accurate, it is to avoid the loading lever that traditional lever-counterweight load mode causes is in non-aqueous flat-shaped The measurement error produced during state.
Angle measuring mechanism is laser interferometer measurement system, including generating laser 8, interferoscope 7 and reflecting mirror 6;Institute State laser generator, interferoscope 7 and the dead in line of reflecting mirror 6.Reflecting mirror 6 is fixed on output shaft 13 end by magnetic stand Portion.Interferoscope 7 is fixed on workbench 1 by magnetic stand.Generating laser 8 is arranged on described workbench 1.Use laser The principle interfering reflection carries out angular surveying, and angular surveying is the most accurate, and certainty of measurement meets the test of high accurate speed reducer Requirement, solves employing angular encoder measurement and is limited, by gratings strips number, the problem causing precision the highest.
In the above-described embodiments, load maintainer and frame 11 are arranged on workbench 1, contribute to reducing measurement error, Improve measuring accuracy;Interferoscope 7, reflecting mirror 6 are all fixedly mounted by magnetic stand, and second the most readily accessible replacing is easy to Regulation;Frame 11 and generating laser 8 are arranged on workbench 1, contribute to dropping low-angle measurement error.Set for being easy to The installation of standby complete machine and the consideration of carrying, described frame 11 can be provided with suspension ring (not shown).
The test process of the present embodiment is as follows:
(1) to force transducer 4 Zero calibration, and the test parameter of laser interferometer measurement system is initialized;
(2) decelerator is carried out multistage loadings and unloads by operation jack 2 to tested decelerator in each position of engagement Carrying, it is unloaded to nominal torque for loading interval, is loading and is reading power by character display in the interval procedure of unloading, is passing through The industrial computer reading angular of laser interferometer measurement system, and draw moment of torsion-deformation hysteresis loop;
(3) method of least square is used to calculate system under test (SUT) measurement torsional rigidity under this engagement;Use formula again Calculate tested decelerator torsional rigidity under this engagement;
(4) idle running error of tested decelerator is calculated with formula.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improve and Retouching also should be regarded as protection domain of the present utility model.

Claims (10)

1. a RV decelerator torsional rigidity and idle running error are test bed, it is characterised in that include frame, output shaft, mistake Cross axle, dividing head, angle measuring mechanism, load maintainer and lining;
Described frame is arranged on the table, is used for installing the input key of RV decelerator, described transition axis one end and RV decelerator Connect, the other end and described dividing head drive connection;
Described output shaft and the outfan drive connection of RV decelerator, described output shaft is installed with load bar;
Described load maintainer two ends are connected with described load bar and workbench respectively;
Described angle measuring mechanism is connected with described output shaft;
Described lining is detachably arranged in described frame.
RV decelerator torsional rigidity the most according to claim 1 and idle running error are test bed, it is characterised in that described Lining is disk-like structure, is provided centrally with reductor installing hole.
RV decelerator torsional rigidity the most according to claim 2 and idle running error are test bed, it is characterised in that described Lining outward flange is provided with the bolt hole coordinated with described frame;The edge of reductor installing hole is provided with and coordinates with reductor Bolt hole.
RV decelerator torsional rigidity the most according to claim 3 and idle running error are test bed, it is characterised in that described Lining outward flange is set to step-like.
RV decelerator torsional rigidity the most according to claim 1 and idle running error are test bed, it is characterised in that described Load maintainer includes force transducer, bulb spherical plain bearing rod end and jack;Described force transducer one end and described load bar End is fixing to be connected, and the other end is connected with described jack by bulb spherical plain bearing rod end, and described jack is arranged on described On workbench.
RV decelerator torsional rigidity the most according to claim 1 and idle running error are test bed, it is characterised in that described Angle measuring mechanism includes generating laser, interferoscope and reflecting mirror;The axis of described laser generator, interferoscope and reflecting mirror Overlap.
RV decelerator torsional rigidity the most according to claim 6 and idle running error are test bed, it is characterised in that described Reflecting mirror is fixed on output shaft end by magnetic stand.
RV decelerator torsional rigidity the most according to claim 6 and idle running error are test bed, it is characterised in that described Interferoscope is fixing on the table by magnetic stand.
RV decelerator torsional rigidity the most according to claim 6 and idle running error are test bed, it is characterised in that described Generating laser is arranged on described workbench.
RV decelerator torsional rigidity the most according to claim 1 and idle running error are test bed, it is characterised in that institute State and in frame, be provided with suspension ring.
CN201620734143.XU 2016-07-13 2016-07-13 A kind of RV decelerator torsional rigidity and idle running error are test bed Active CN205785813U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620734143.XU CN205785813U (en) 2016-07-13 2016-07-13 A kind of RV decelerator torsional rigidity and idle running error are test bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620734143.XU CN205785813U (en) 2016-07-13 2016-07-13 A kind of RV decelerator torsional rigidity and idle running error are test bed

Publications (1)

Publication Number Publication Date
CN205785813U true CN205785813U (en) 2016-12-07

Family

ID=58123286

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620734143.XU Active CN205785813U (en) 2016-07-13 2016-07-13 A kind of RV decelerator torsional rigidity and idle running error are test bed

Country Status (1)

Country Link
CN (1) CN205785813U (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106596004A (en) * 2017-01-04 2017-04-26 南京工程学院 RV speed reducer support stiffness testing device
CN107063684A (en) * 2017-06-12 2017-08-18 龙工(上海)液压有限公司 A kind of rigid detection device of accurate retarding machine structure
CN107228765A (en) * 2017-07-19 2017-10-03 苏州宝嘉新能源科技有限公司 Worm type of reduction gearing maximum force test device
CN107271178A (en) * 2017-05-03 2017-10-20 中南大学 A kind of precision speed reduction device static properties test experimental bed
CN109668729A (en) * 2019-01-28 2019-04-23 银川威力传动技术股份有限公司 A kind of retarder static load destructive testing platform
CN110031218A (en) * 2019-04-03 2019-07-19 上海交通大学 Retarder rigidity detection device
CN110146286A (en) * 2019-05-15 2019-08-20 上海大学 A kind of harmonic speed reducer torsion test test device
CN111380681A (en) * 2020-04-22 2020-07-07 大连理工大学 Harmonic gear transmission return difference measuring device and method
CN113021413A (en) * 2021-02-23 2021-06-25 埃夫特智能装备股份有限公司 Harmonic reducer rigidity consistency measuring device for industrial robot
CN114166441A (en) * 2021-12-09 2022-03-11 天津大学 Torsional rigidity self-measuring system and method of precision reducer comprehensive performance detector
CN115683607A (en) * 2022-11-03 2023-02-03 广东理工学院 Accurate right angle speed reducer torsional rigidity and return difference detection device
CN117491012A (en) * 2024-01-02 2024-02-02 合肥工业大学 Wear detection device of high-precision speed reducer

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106596004A (en) * 2017-01-04 2017-04-26 南京工程学院 RV speed reducer support stiffness testing device
CN107271178A (en) * 2017-05-03 2017-10-20 中南大学 A kind of precision speed reduction device static properties test experimental bed
CN107063684A (en) * 2017-06-12 2017-08-18 龙工(上海)液压有限公司 A kind of rigid detection device of accurate retarding machine structure
CN107228765B (en) * 2017-07-19 2023-11-03 苏州宝嘉新能源科技有限公司 Maximum force testing device for worm gear speed reducer
CN107228765A (en) * 2017-07-19 2017-10-03 苏州宝嘉新能源科技有限公司 Worm type of reduction gearing maximum force test device
CN109668729A (en) * 2019-01-28 2019-04-23 银川威力传动技术股份有限公司 A kind of retarder static load destructive testing platform
CN110031218A (en) * 2019-04-03 2019-07-19 上海交通大学 Retarder rigidity detection device
CN110146286A (en) * 2019-05-15 2019-08-20 上海大学 A kind of harmonic speed reducer torsion test test device
CN111380681A (en) * 2020-04-22 2020-07-07 大连理工大学 Harmonic gear transmission return difference measuring device and method
CN113021413A (en) * 2021-02-23 2021-06-25 埃夫特智能装备股份有限公司 Harmonic reducer rigidity consistency measuring device for industrial robot
CN114166441A (en) * 2021-12-09 2022-03-11 天津大学 Torsional rigidity self-measuring system and method of precision reducer comprehensive performance detector
CN115683607A (en) * 2022-11-03 2023-02-03 广东理工学院 Accurate right angle speed reducer torsional rigidity and return difference detection device
CN117491012A (en) * 2024-01-02 2024-02-02 合肥工业大学 Wear detection device of high-precision speed reducer
CN117491012B (en) * 2024-01-02 2024-03-19 合肥工业大学 Wear detection device of high-precision speed reducer

Similar Documents

Publication Publication Date Title
CN205785813U (en) A kind of RV decelerator torsional rigidity and idle running error are test bed
CN103776628B (en) Speed reduction unit torsional rigidity and idle running error test experimental bed and method of testing thereof
CN104075890B (en) A kind of servomotor and harmonic wave speed reducing machine comprehensive test platform
CN105588718B (en) Machine tool chief axis combination property detection/monitoring test system and method
CN103389183B (en) Spacecraft quality characteristic comprehensive test board based on spherical air bearing
CN108225766A (en) Precision speed reduction device precision and performance comprehensive testing rack
CN107271179B (en) Device for testing comprehensive performance of reciprocating rotary speed reducer
CN107238497B (en) Horizontal reciprocating rotary speed reducer product comprehensive test testboard
CN105823635A (en) Bearing rotation torque test device
CN203981405U (en) A kind of servomotor and harmonic wave speed reducing machine comprehensive test platform
CN105588498B (en) A kind of RV retarders static state return difference test device
CN101571441A (en) Six-dimension force sensor calibration device with medium measurement range
CN102175204A (en) Device for detecting axial clearance and radial clearance of joint bearing
CN208443578U (en) Robot retarder angle displacement measuring device
CN112881012A (en) Speed reducer detection device
CN105352643B (en) One kind transmission shaft torque scaling method
CN209401319U (en) A kind of device measuring nuclear fuel assembly screen work lattice cell stiffness characteristics
CN201765051U (en) Weighing sensor corner load error tester
CN206292048U (en) The experimental bench of RV decelerator transmission efficiencies
CN210625623U (en) Novel parallelism detector
CN201081757Y (en) Integrated tester for power assembly parameters
CN111624106A (en) Small-sized structure tension-torsion coupling large-deformation mechanical response testing device
CN109273106A (en) A kind of device measuring nuclear fuel assembly screen work lattice cell stiffness characteristics
CN211504379U (en) Weighing apparatus calibrating device
CN102944373B (en) Method for measuring absorption energy of pendulum impact tester and puncture tester by weight method

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CB03 Change of inventor or designer information

Inventor after: Li Abo

Inventor after: Li Xiang

Inventor before: Zheng Xu

Inventor before: Zhang Liang

Inventor before: Liu Xilong

Inventor before: Ma Haibo

Inventor before: Ma Wenguang

CB03 Change of inventor or designer information
CP03 Change of name, title or address

Address after: 750002 the Ningxia Hui Autonomous Region high tech Zone, Yinchuan, No. 1 plant room, room 406

Patentee after: Yinchuan power transmission technology Limited by Share Ltd

Address before: 750011 the Ningxia Hui Autonomous Region Jinfeng Industrial Park, the new open street, No. 128, No.

Patentee before: Yinchuan Weili Reducer Machinery Co., Ltd.

CP03 Change of name, title or address
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: RV reduction gear torsional rigidity and idle running error test test bench

Effective date of registration: 20190719

Granted publication date: 20161207

Pledgee: Yinchuan SME Credit Guarantee Center

Pledgor: Yinchuan power transmission technology Limited by Share Ltd

Registration number: 2019990000738

PE01 Entry into force of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20201210

Granted publication date: 20161207

Pledgee: Yinchuan SME Financing Guarantee Co.,Ltd.

Pledgor: YINCHUAN WEILI TRANSMISSION TECHNOLOGY Co.,Ltd.

Registration number: 2019990000738

PC01 Cancellation of the registration of the contract for pledge of patent right
PM01 Change of the registration of the contract for pledge of patent right

Change date: 20201209

Registration number: 2019990000738

Pledgee after: Yinchuan SME Financing Guarantee Co.,Ltd.

Pledgee before: Yinchuan SME Credit Guarantee Center

PM01 Change of the registration of the contract for pledge of patent right