CN209400210U - A kind of speed reducer assembly abnormal sound testboard bay - Google Patents
A kind of speed reducer assembly abnormal sound testboard bay Download PDFInfo
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- CN209400210U CN209400210U CN201920157763.5U CN201920157763U CN209400210U CN 209400210 U CN209400210 U CN 209400210U CN 201920157763 U CN201920157763 U CN 201920157763U CN 209400210 U CN209400210 U CN 209400210U
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Abstract
The utility model relates to speed reducer assembly noise testing technical fields, disclose a kind of speed reducer assembly abnormal sound testboard bay, it include: fixed rack, test motor, vibrating sensor, simulating wheel and host computer, the host computer is electrically connected with the test motor and the vibrating sensor respectively, the test motor is used to be drivingly connected with speed reducer assembly to be measured, the vibrating sensor with speed reducer assembly to be measured for contacting, the test motor is connected to the fixed rack, and the shaft level of the test motor is arranged in the fixed rack.The utility model can the operation of objective simulation vehicle when speed reducer assembly difference operating condition under retarder abnormal sound situation, side rate midwifery line is offline and Incoming Quality Control, improves product fine and promotes satisfaction of users.
Description
Technical field
The utility model relates to speed reducer assembly noise testing technical fields more particularly to a kind of speed reducer assembly abnormal sound to survey
Test stand frame.
Background technique
The retarder that new energy pure electric automobile uses at present is mostly single speed than double reduction, and has differential mechanism.Slow down
In the fabrication process due to process relation, the engagement between gear cannot accomplish no sideshake for gear in device, therefore in gear positive and negative rotation
Backhaul gap (also referred to as back clearance) can generate related abnormal sound noise in the case that operating condition is impacted, and pure electric automobile is not due to starting
Engine roar when the idle noise of machine and acceleration, vehicle gear when low speed adds and subtracts torque or crosses deceleration strip
Backhaul noise is easy to be transmitted in crew module by body frame to be heard by personnel in cabin, causes user experience bad.
It is just found in order to avoid being installed in vehicle after rear or vehicle reaches client to retarder there are the above problem,
Cause the problem that time and cost waste and user experience is bad to occur, is usually carried out in the prior art only with dial gauge
The control of gear backlash value, however found in practice, checking on again for gear backlash value is accurate, still has many retarders
There are the abnormal sound noises in backhaul gap after installing again, thus there is no direct transformational relations between the two, and relevance is simultaneously little,
Therefore for the checking on of the abnormal sound noise in backhaul gap, accuracy rate is low.
Utility model content
In view of the above-mentioned deficiencies of the prior art, technical problem to be solved by the utility model is to provide one kind being capable of objective mould
Retarder abnormal sound situation under speed reducer assembly difference operating condition, helps producing line offline and Incoming Quality Control, improves and produce when quasi- vehicle operation
Product acceptance rate and the speed reducer assembly abnormal sound testboard bay for promoting satisfaction of users.
To achieve the goals above, the technical solution adopted in the utility model are as follows:
A kind of speed reducer assembly abnormal sound testboard bay, comprising: fixed rack, test motor, vibrating sensor, simulating wheel
And host computer, the host computer are electrically connected with the test motor and the vibrating sensor respectively, the test motor is used
It is drivingly connected in speed reducer assembly to be measured, the vibrating sensor with speed reducer assembly to be measured for contacting, the test electricity
Machine is connected to the fixed rack, and the shaft level of the test motor is arranged in the fixed rack.
In above scheme, host computer is electrically connected with the test motor and the vibrating sensor respectively, and test motor connects
It connects and is fixed on fixed rack, keep stability, in test, test motor is used to drive with the input shaft of speed reducer assembly to be measured
Connection, vibrating sensor are used to connect with the outer housing of speed reducer assembly to be measured, and simulating wheel is used for and retarder to be measured
The output axis connection of assembly, host computer on the one hand be used to control test motor revolving speed and torque, on the other hand for receive to
The Vibration Condition on speed reducer assembly is surveyed, to sum up design can help producing line to realize speed reducer assembly installation and operation on vehicle to be measured
Abnormal sound production under the simulation of different operating conditions and different operating conditions afterwards, it is final to help the acceptance rate for improving speed reducer assembly and mention
Rise satisfaction of users.
Further, the fixed rack includes horizontally disposed fixed platform, and the test motor is by covering at it
Mounting bracket outside shell is spirally connected with the fixed platform, and the mounting bracket is close to the free end of the shaft of the test motor
Side is equipped with the bindiny mechanism A for speed reducer assembly to be measured connection.On the one hand mounting bracket facilitates test motor in fixed platform
Installation, on the other hand facilitate further fixing for speed reducer assembly to be measured, be conducive to exclusive PCR, it is total to reduce retarder to be measured
Influence at mounting stability itself to backhaul gap noise testing result accuracy inside speed reducer assembly to be measured.
Further, the fixed platform includes lifting platform and fixed station, and the test motor is connected to the lifting platform,
The shaft level of the test motor is set to above the fixed station, and the fixed station is equipped with to be connected for speed reducer assembly to be measured
Fixed bindiny mechanism B.Bindiny mechanism B can be safer together with bindiny mechanism A fix speed reducer assembly to be measured；It rises
Drop platform is used to control the height that test motor fixes platform relatively, is conducive to be compatible with various sizes of speed reducer assembly to be measured and passes through company
Connection mechanism B realizes fixation together with bindiny mechanism A.
Further, the fixed platform includes six axis mobile platforms and fixed station, and the test motor is connected to described
The shaft level of six axis mobile platforms, the test motor is set to above the fixed station, and the fixed station is equipped with for be measured
The bindiny mechanism B that speed reducer assembly is connected and fixed.The six axis mobile platform can along six axis directions realize upper and lower, left and right,
Forward and backward movement, be conducive to fixed rack be preferably compatible with the speed reducer assembly to be measured of different shape size in mounting bracket and
Fixed station is bonded.
Further, the fixed rack includes horizontally disposed fixed platform, and the fixed platform is equipped with for be measured
The shaft of the bindiny mechanism B that speed reducer assembly is connected and fixed, the test motor be positioned horizontally in above the fixed platform and with
The input axis connection of speed reducer assembly to be measured.
Further, the simulating wheel includes transmission shaft and the flying wheel set on described transmission shaft one end.
Further, the vibrating sensor bottom is equipped with plasticine.
Further, the vibrating sensor bottom is equipped with magnetic pedestal, and the bottom of the magnetic pedestal is equipped with cushion,
Magnet is equipped in the magnetic pedestal.
Further, the vibrating sensor bottom is equipped with sucker.Plasticine, magnetic pedestal and cushion and sucker
Above-mentioned design be all conducive to vibrating sensor it is preferable, it is convenient contact and dismantle with speed reducer assembly to be measured, it is quasi- to improve test
True rate and test job efficiency.
Further, the fixed rack further includes being located at below the fixed platform to be used to support the fixed platform
The bottom of center rest, the center rest is equipped with counter weight base, and vehicle is equipped between the counter weight base and the fixed platform
Wheel places bracket.Counter weight base is used to guarantee that the stability of fixed rack, wheel to place bracket for facilitating simulating wheel solid
The placement for determining rack facilitates test to pick and place, and improves test job efficiency.
After adopting the above technical scheme, the beneficial effects of the utility model are: can slow down when the operation of objective simulation vehicle
Retarder abnormal sound situation under device assembly difference operating condition helps producing line offline and Incoming Quality Control, improves product fine rate and is promoted and is used
Experience satisfaction in family；Stability is good, easy to operate, and the retarder to be measured that same testboard bay can be compatible with sizes shape is total
At abnormal sound test.
Detailed description of the invention
It is as follows in order to illustrate more clearly of the utility model embodiment or the technical solution of the prior art, attached drawing:
Fig. 1 is to overlook under a kind of speed reducer assembly abnormal sound testboard bay test mode that the utility model embodiment 1 provides
Structural schematic diagram；
Fig. 2 is to overlook under a kind of speed reducer assembly abnormal sound testboard bay test mode that the utility model embodiment 2 provides
Structural schematic diagram；
Fig. 3 is a kind of speed reducer assembly abnormal sound testboard bay side structure schematic view that the utility model embodiment 3 provides.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of speed reducer assembly abnormal sound testboard bays, comprising: fixed rack 1, test
Motor 2, vibrating sensor 3, simulating wheel 4 and host computer 5, the host computer 5 respectively with the test motor 2 and the vibration
Dynamic sensor 3 is electrically connected, and the test motor 2 is used to be drivingly connected with speed reducer assembly 7 to be measured, that is, tests the shaft of motor 2
Free end and speed reducer assembly 7 to be measured input axis connection, for driving input shaft to rotate, the vibrating sensor 3 is used for
It is contacted with speed reducer assembly 7 to be measured, test vibration value, specifically, in order to preferably, accurately test speed reducer assembly 7 to be measured
Backhaul gap abnormal sound, preferably vibrating sensor 3 is placed in the shell between 7 input shaft of speed reducer assembly and output shaft to be measured
Place, the test motor 2 are connected to the fixed rack 1, fixed rack 1, the survey can be fixedly connected on by screw-nut
The shaft level of examination motor 2 is arranged in the fixed rack 1, i.e., by taking the angle of people as an example, tests the extension side of the shaft of motor 2
It is tested for abnormal sound to for horizontal direction, being conducive to operator and easily connect and consolidate speed reducer assembly 7 to be measured.Vibration passes
Sensor 3 is used for the feedback of final backhaul gap abnormal sound result, detects compared to dB meter or by the sense of hearing of people, its setting is advantageous
In the interference for excluding other noises of workshop, while tester's subjective emotion is also excluded to 7 abnormal sound of speed reducer assembly to be measured instantly
The whether satisfactory influence of noise size.
In the present embodiment, host computer 5 is electrically connected with the test motor 2 and the vibrating sensor 3 respectively, tests motor
2 are fastened on fixed rack 1, keep stability, and in test, test motor 2 is for the input with speed reducer assembly 7 to be measured
Axis is drivingly connected, and vibrating sensor 3 is used to connect with the outer housing of speed reducer assembly 7 to be measured, simulating wheel 4 be used for to
The output axis connection of speed reducer assembly 7 is surveyed, 5 one side of host computer is used to control the revolving speed and torque of test motor 2, realizes to be measured
The adjusting of the different operating conditions of speed reducer assembly 7, on the other hand for receiving the Vibration Condition on speed reducer assembly 7 to be measured.
For example, starting abnormal sound test, adjustment host computer state modulator test after installation fixes speed reducer assembly 7 to be measured
Motor makes test motor that tested speed reducer assembly is mentioned a certain range of speeds, maintains certain revolving speed, host computer to revolving speed mode
The also settable torque value for maintaining this revolving speed, intermittent allow are tested motor output torque, are added to simulate vehicle low speed
Tested speed reducer assembly internal gear positive and negative rotation operating condition, the vibration that vibrating sensor 3 measures at this time when subtracting torque or crossing deceleration strip
The data ginseng that whether gear backhaul noise can cause client to complain when value can be used to tested speed reducer assembly later period vehicle operation
According to specifically, in host computer being stored with standard vibration value, host computer can compare the vibration values received and standard vibration value
Compared with, if the vibration values received are greater than standard vibration value, tester's speed reducer assembly is prompted to be unsatisfactory for requiring, conversely,
Then tell that tester's product is qualified, wherein standard vibration value be quiet room by the experience test of noise repeatedly obtain can
The vibration values on speed reducer assembly under the noise received by more personnel；It to sum up designs, the testboard bay of the present embodiment can be helped
Realized before midwifery line blanking or when supplied materials speed reducer assembly 7 to be measured on vehicle after installation and operation the simulation of different operating conditions and
Abnormal sound production under different operating conditions, the final acceptance rate for helping to improve speed reducer assembly and promotion satisfaction of users.
Embodiment 2
As shown in Fig. 2, the present embodiment the difference from embodiment 1 is that, the present embodiment emphasizes speed reducer assembly to be measured 7 itself
It is preferably bonded with test motor and/or fixed rack, keeps stability, reduce the distracter of abnormal sound test, Yi Jiqiang
Adjust same testboard bay to the compatibility of speed reducer assembly 7 to be measured；The fixed rack 1 includes horizontally disposed fixed platform
11, the test motor 2 is spirally connected by the mounting bracket 6 covered at outside its shell with the fixed platform 11, the installation branch
Frame 6 is equipped with the bindiny mechanism A(figure for speed reducer assembly 7 to be measured connection close to the free end side of the shaft of the test motor 2
In be blocked be not shown).6 one side of mounting bracket facilitates test motor 2 in the installation of fixed platform 11, on the other hand it is convenient to
Further fixing for speed reducer assembly 7 is surveyed, is conducive to exclusive PCR, reduces itself mounting stability pair of speed reducer assembly 7 to be measured
The influence of 7 inside backhaul gap noise testing result accuracy of speed reducer assembly to be measured.Bindiny mechanism A can be and deceleration to be measured
The registration holes of 7 shell bores of device assembly cooperation, are also possible to cover 7 one end of speed reducer assembly to be measured and lean on mounting bracket 6
The housing that the free end side of the shaft of the nearly test motor 2 is spirally connected.In order to mitigate the overall weight of mounting bracket 6, install
Bracket 6 is frame bracket, is only used for the surrounding of fixed test motor 2.
Further, under an embodiment, the fixed platform 11 includes lifting platform 111 and fixed station 112, the test
Motor 2 is connected to the lifting platform 111, i.e. mounting bracket 6 is fixed on motor 2 is tested on lifting platform 111, and lifting platform 111 is set
There are mounting platform and lift supporting rod, lift supporting rod lifting is able to drive relatively fixed 112 oscilaltion of platform of mounting platform, rises
Descending branch strut can go up and down for cylinder, hydraulic cylinder, can also go up and down for screw rod, and the shaft level of the test motor 2 is set to described solid
Determine 112 top of platform, the fixed station 112 is equipped with the bindiny mechanism B1121 being connected and fixed for speed reducer assembly 7 to be measured, connection
Mechanism B1121 can be for through the long round for being set to simple stripe-arrangement on fixed station 112.Due to where bindiny mechanism B1121
Plane and the place bindiny mechanism A plane are vertical relation, therefore bindiny mechanism B1121 can be more steady together with bindiny mechanism A
It is appropriate fix speed reducer assembly 7 to be measured, and speed reducer assembly to be measured 7 not only maintains and is stably connected with pass with test motor 1
System also maintains and is stably connected with relationship with fixed rack 1；Lifting platform 111 is for controlling the relatively fixed platform 112 of test motor 2
Height can increase the height of the relatively fixed platform 112 of lifting platform 111 when speed reducer assembly 7 to be measured is larger, facilitate to be measured subtract
The cooperation of fast device assembly 7 and bindiny mechanism A, the cooperation with bindiny mechanism B1121 can then pass through the fixed hole position of the long round of change
Can be realized, thus above-mentioned design be conducive to be compatible with various sizes of speed reducer assembly to be measured 7 by bindiny mechanism B1121 with connect
Mechanism A realizes fixation together.
Alternatively, the fixed platform 11 includes six axis mobile platforms and fixed station 112, the survey under another embodiment
Examination motor 2 is connected to the six axis mobile platform, and the shaft level of the test motor 2 is set to 112 top of fixed station, institute
It states fixed station 112 and is equipped with the bindiny mechanism B1121 being connected and fixed for speed reducer assembly 7 to be measured.Difference with lifting platform 111 exists
In the six axis mobile platform can realize moving for up, down, left, right, before and after along six axis directions, be conducive to fixed rack 1
The preferably speed reducer assembly to be measured 7 of compatible different shape size being bonded in mounting bracket 6 and fixed station 112.
To sum up, can not only objective simulation vehicle operation when speed reducer assembly difference operating condition under retarder abnormal sound situation, side
Midwifery line is offline and Incoming Quality Control, and stability is good, and easy to operate, same fixed rack 1 can be compatible with sizes shape
The abnormal sound of speed reducer assembly 7 to be measured is tested.
Embodiment 3
The present embodiment and the difference of embodiment 1 or embodiment 2 are that fixed rack 1 described in the present embodiment includes level
The fixed platform 11 of setting, the fixed platform 11 are equipped with the bindiny mechanism being connected and fixed for speed reducer assembly 7 to be measured
B1121, the shaft of the test motor 2 are positioned horizontally in 11 top of fixed platform and the input with speed reducer assembly 7 to be measured
Axis connection.I.e. in the present embodiment, fixed platform 11 is only used for being connected and fixed for speed reducer assembly 7 to be measured, keeps retarder to be measured
Stability of the assembly 7 in fixed platform 11, test motor 2 are connected to fixed rack 1, and total by shaft and retarder to be measured
It is drivingly connected at 7.
As shown in figure 3, the simulating wheel 4 includes transmission shaft 41 and the flying wheel 42 set on described 41 one end of transmission shaft.
Wherein, the output axis connection of the other end of transmission shaft 41 and speed reducer assembly 7 to be measured, flying wheel 42 then being capable of simulating vehicle wheels
Tire keeps certain inertia when testing motor 2 and changing output torque, when simulating vehicle operation, inside speed reducer assembly 7 to be measured
Operating condition when gear positive and negative rotation, to really reflect what speed reducer assembly 7 to be measured user when running on vehicle experienced
Noise situations.
3 bottom of vibrating sensor is equipped with plasticine.The setting of plasticine enables vibrating sensor 3 easily to glue
On 7 outer housing of speed reducer assembly to be measured of any material, bonding and convenient disassembly, and can repeatedly be utilized.
Optionally, 3 bottom of vibrating sensor is equipped with magnetic pedestal 31, and the bottom of the magnetic pedestal 31 is equipped with buffering
Pad, the magnetic pedestal 31 is interior to be equipped with magnet.Magnetic pedestal 31 can be used for the speed reducer assembly to be measured 7 of cast iron housing, cushion
Be provided with and be conducive to that magnetic pedestal 31 is avoided to scratch 7 outer housing of speed reducer assembly to be measured, also can suitably reduce magnetic attraction, it is convenient
Vibrating sensor 3 is removed from 7 outer housing of speed reducer assembly to be measured.
Optionally, 3 bottom of vibrating sensor is equipped with sucker.Apply downward pressure when use to vibrating sensor 3,
By the air discharge in sucker, contact of the vibrating sensor 3 on 7 outer housing of speed reducer assembly to be measured can be realized and place.
The fixed rack 1 further includes the stabilization that the fixed platform 11 is used to support below the fixed platform 11
The bottom of bracket 12, the center rest 12 is equipped with counter weight base 13, between the counter weight base 13 and the fixed platform 11
Bracket 14 is placed equipped with wheel.Counter weight base 13 increases with the stability for guaranteeing fixed rack 1 is reused in, and wheel places bracket 14
For facilitating simulating wheel 4 in the placement of fixed rack 1, facilitates test to pick and place, improve test job efficiency, wheel places bracket
14 is horizontal in the setting of fixed platform 11, and it may include two horizontally disposed frames that wheel, which places bracket 14, when simulating wheel 4 is placed
By axis across two frames, finally tire part is set up and is placed on frame, further, as shown in figure 3, frame
The surface of extended 11 horizontal direction of fixed platform in both ends takes so that simulating wheel 4 be facilitated to place in the two sides of fixed platform 11
With with put back to it is very convenient.
To sum up, the testboard bay of the utility model is easy to use, and stability is good, can slow down when the operation of objective simulation vehicle
Retarder abnormal sound situation under device assembly difference operating condition helps producing line to complete offline and Incoming Quality Control, improves product fine rate and mentions
Rise satisfaction of users.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (10)
1. a kind of speed reducer assembly abnormal sound testboard bay characterized by comprising fixed rack, test motor, vibrating sensing
Device, simulating wheel and host computer, the host computer is electrically connected with the test motor and the vibrating sensor respectively, described
Motor to be tested to be used to be drivingly connected with speed reducer assembly to be measured, the vibrating sensor is used to contact with speed reducer assembly to be measured,
The test motor is connected to the fixed rack, and the shaft level of the test motor is arranged in the fixed rack.
2. a kind of speed reducer assembly abnormal sound testboard bay according to claim 1, which is characterized in that the fixed rack packet
Horizontally disposed fixed platform is included, the test motor passes through the mounting bracket covered at outside its shell and the fixed platform spiral shell
It connects, the mounting bracket is equipped with the company for speed reducer assembly to be measured connection close to the free end side of the shaft of the test motor
Connection mechanism A.
3. a kind of speed reducer assembly abnormal sound testboard bay according to claim 2, which is characterized in that the fixed platform packet
Lifting platform and fixed station are included, the test motor is connected to the lifting platform, and the shaft level of the test motor is set to described
Above fixed station, the fixed station is equipped with the bindiny mechanism B being connected and fixed for speed reducer assembly to be measured.
4. a kind of speed reducer assembly abnormal sound testboard bay according to claim 2, which is characterized in that the fixed platform packet
Six axis mobile platforms and fixed station are included, the test motor is connected to the six axis mobile platform, the shaft of the test motor
Level is set to above the fixed station, and the fixed station is equipped with the bindiny mechanism B being connected and fixed for speed reducer assembly to be measured.
5. a kind of speed reducer assembly abnormal sound testboard bay according to claim 1, which is characterized in that the fixed rack packet
Horizontally disposed fixed platform is included, the fixed platform is equipped with the bindiny mechanism B being connected and fixed for speed reducer assembly to be measured, institute
The shaft for stating test motor is positioned horizontally in above the fixed platform and the input axis connection with speed reducer assembly to be measured.
6. a kind of speed reducer assembly abnormal sound testboard bay according to claim 1, which is characterized in that the simulating wheel packet
Include transmission shaft and the flying wheel set on described transmission shaft one end.
7. a kind of speed reducer assembly abnormal sound testboard bay according to claim 1, which is characterized in that the vibrating sensor
Bottom is equipped with plasticine.
8. a kind of speed reducer assembly abnormal sound testboard bay according to claim 1, which is characterized in that the vibrating sensor
Bottom is equipped with magnetic pedestal, and the bottom of the magnetic pedestal is equipped with cushion, is equipped with magnet in the magnetic pedestal.
9. a kind of speed reducer assembly abnormal sound testboard bay according to claim 1, which is characterized in that the vibrating sensor
Bottom is equipped with sucker.
10. a kind of speed reducer assembly abnormal sound testboard bay according to claim 2 or 5, which is characterized in that the fixed station
Frame further includes the center rest that the fixed platform is used to support below the fixed platform, the bottom of the center rest
Wheel, which is equipped with, equipped with counter weight base, between the counter weight base and the fixed platform places bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920157763.5U CN209400210U (en) | 2019-01-30 | 2019-01-30 | A kind of speed reducer assembly abnormal sound testboard bay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920157763.5U CN209400210U (en) | 2019-01-30 | 2019-01-30 | A kind of speed reducer assembly abnormal sound testboard bay |
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| Publication Number | Publication Date |
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| CN209400210U true CN209400210U (en) | 2019-09-17 |
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ID=67899154
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| CN201920157763.5U Active CN209400210U (en) | 2019-01-30 | 2019-01-30 | A kind of speed reducer assembly abnormal sound testboard bay |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110887660A (en) * | 2019-11-12 | 2020-03-17 | 重庆长安新能源汽车科技有限公司 | Main impact point detection method for reducer meshing backlash impact abnormal sound |
| CN112213100A (en) * | 2020-10-22 | 2021-01-12 | 哈尔滨工业大学 | Noise test platform for multi-model harmonic reducers |
-
2019
- 2019-01-30 CN CN201920157763.5U patent/CN209400210U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110887660A (en) * | 2019-11-12 | 2020-03-17 | 重庆长安新能源汽车科技有限公司 | Main impact point detection method for reducer meshing backlash impact abnormal sound |
| CN110887660B (en) * | 2019-11-12 | 2021-02-26 | 重庆长安新能源汽车科技有限公司 | Main impact point detection method for reducer meshing backlash impact abnormal sound |
| CN112213100A (en) * | 2020-10-22 | 2021-01-12 | 哈尔滨工业大学 | Noise test platform for multi-model harmonic reducers |
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Address after: 314500 room 206, No. 999, Qingfeng South Road, Tongxiang Economic Development Zone, Tongxiang City, Jiaxing City, Zhejiang Province Patentee after: Hezhong New Energy Vehicle Co.,Ltd. Address before: 314500 room 206, No. 999, Qingfeng South Road, Tongxiang Economic Development Zone, Tongxiang City, Jiaxing City, Zhejiang Province Patentee before: HOZON NEW ENERGY AUTOMOBILE Co.,Ltd. Address after: 314500 room 206, No. 999, Qingfeng South Road, Tongxiang Economic Development Zone, Tongxiang City, Jiaxing City, Zhejiang Province Patentee after: United New Energy Automobile Co.,Ltd. Address before: 314500 room 206, No. 999, Qingfeng South Road, Tongxiang Economic Development Zone, Tongxiang City, Jiaxing City, Zhejiang Province Patentee before: Hezhong New Energy Vehicle Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |