CN107575470A - A kind of good plastic bearing of anti-seismic performance - Google Patents

A kind of good plastic bearing of anti-seismic performance Download PDF

Info

Publication number
CN107575470A
CN107575470A CN201710780477.XA CN201710780477A CN107575470A CN 107575470 A CN107575470 A CN 107575470A CN 201710780477 A CN201710780477 A CN 201710780477A CN 107575470 A CN107575470 A CN 107575470A
Authority
CN
China
Prior art keywords
bearing
inner race
outer ring
bearing inner
holding tank
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.)
Granted
Application number
CN201710780477.XA
Other languages
Chinese (zh)
Other versions
CN107575470B (en
Inventor
梁旭
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.)
Ningbo Chuangxina Bearings Co Ltd
Original Assignee
Ningbo Chuangxina Bearings 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 Ningbo Chuangxina Bearings Co Ltd filed Critical Ningbo Chuangxina Bearings Co Ltd
Priority to CN201710780477.XA priority Critical patent/CN107575470B/en
Publication of CN107575470A publication Critical patent/CN107575470A/en
Application granted granted Critical
Publication of CN107575470B publication Critical patent/CN107575470B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Support Of The Bearing (AREA)

Abstract

The invention belongs to technical field of bearings, the good plastic bearing of especially a kind of anti-seismic performance, the shortcomings that being shaken for the easy abrading motion of existing plastic bearing problem, now propose following scheme, it includes bearing inner race, the outer ring movable sleeve of bearing inner race is connected to bearing outer ring, the both ends movable sleeve of bearing inner race is connected to is connected to inner ring damping with bearing inner race slip cap, the both ends of bearing outer ring offer the first chute being slidably socketed with inner ring damping, the outer ring of bearing inner race offers the first holding tank along its axis direction array, the inner ring of bearing outer ring offers the second holding tank corresponding with the first holding tank along its axis direction array.Gap between the various pieces ensured between bearing inner race and bearing outer ring that the present invention is imitated is consistent, reduce between bearing inner race and bearing outer ring frictional force when motion, the influence beated in the running to bearing inner race by rotating shaft is effectively avoided simultaneously, improves the shock resistance of bearing inner race.

Description

A kind of good plastic bearing of anti-seismic performance
Technical field
The present invention relates to technical field of bearings, more particularly to the plastic bearing that a kind of anti-seismic performance is good.
Background technology
The plastic bearing used at present can be generally divided into plastics rolling bearing and plastic sliding bearing;Plastics rolling bearing It can be distinguished with the operation principle of plastic sliding bearing by title can, what plastics rolling bearing occurred when working rubs Wiping is rolling friction, and happens is that sliding friction during plastic sliding bearing work;The size of force of rolling friction mainly depend on The accuracy of manufacture;And the material for depending mainly on the size of bearing sliding surface of plastic sliding bearing frictional force;
Easily produce the inside of bearing under the eccentric motion effect of plastic bearing rotating shaft internally when in use to rub Wipe, bearing is shaken when motion when serious, influence the performance of bearing and the motion of rotating shaft;
A kind of good plastic bearing of anti-seismic performance is needed for this, it is each between bearing inner race and bearing outer ring to ensure Gap between part is consistent, reduces between bearing inner race and bearing outer ring frictional force when motion, while effectively keep away Exempt from the influence beated in the running to bearing inner race by rotating shaft, improve the shock resistance of bearing inner race.
The content of the invention
The invention aims to solve the shortcomings that easy abrading motion of plastic bearing in the prior art is shaken, and propose A kind of good plastic bearing of anti-seismic performance.
To achieve these goals, present invention employs following technical scheme:
A kind of good plastic bearing of anti-seismic performance, including bearing inner race, the outer ring movable sleeve of the bearing inner race are connected to Bearing outer ring, the both ends movable sleeve of the bearing inner race is connected to is connected to inner ring damping, the axle with bearing inner race slip cap The both ends of bearing outer-ring offer the first chute being slidably socketed with inner ring damping, and the outer ring of the bearing inner race is along its axis Direction array offers the first holding tank, and the inner ring of the bearing outer ring offers and the first holding tank along its axis direction array Corresponding second holding tank, strip rolling element, the rolling element are filled between second holding tank and the first holding tank Outer ring movable sleeve be connected to the retainer being coaxially disposed along bearing inner race, the both ends of the retainer be provided with bearing inner race and The middle damping of bearing outer ring pivot bush unit, the bearing inner race and bearing outer ring side close to each other offer with The second chute that middle damping is slidably connected.
Preferably, the inner ring damping includes the collar with bearing inner race both ends pivot bush unit, and the collar is remote Axis direction array of one end outer ring of bearing inner race along the collar is hinged with motion bar, one end hinge of the motion bar away from the collar Piston is connected to, the outer ring slip cap of the piston is connected to sleeve, and the inside of the sleeve offers is connected to length with piston slip cap Bar limit slot, the one end of the sleeve away from motion bar are welded with the ball being connected with the first slide.
Preferably, the middle damping includes the end casing being arranged between bearing inner race and bearing outer ring, described The inner ring of end casing and outer ring offer strip holding tank, the internal slide socket of the holding tank along its axis direction array There is movable block, one end that the movable block stretches into holding tank is welded with the spring being fixedly connected with holding tank, and the movable block is stretched The one end for going out holding tank is welded with the circular arc sliding block being connected with the second slide.
Preferably, the inside of the sleeve is filled with buffering hydraulic oil, and the outer ring fixed cover of the piston is connected to and limited The sealing ring that position groove is slidably socketed.
Preferably, the outer ring fixed cover of the sleeve is connected to the holding collar being coaxially disposed with bearing outer ring, and keeps set The inner ring of ring and bearing outer ring pivot bush unit.
Preferably, the end casing offers positioning hole close to the side of retainer, and the both ends of the retainer offer The butt hole docked with positioning hole, the alignment pin fixedly sleeved with positioning hole is installed on the butt hole, the end casing leads to Fixing screws are crossed to be fixedly connected with retainer.
Beneficial effects of the present invention:
By the inner ring damping set at the both ends of bearing inner race, the collar extends the length of bearing inner race, virtually The contact area for the rotating shaft that increase bearing inner race is secured to, while the motion bar fortune on the collar is promoted when rotating shaft deflection It is dynamic, then enter row buffering using piston in the presence of the hydraulic oil of sleeve inner, effectively avoid because of rotating shaft in the running The influence beated to bearing inner race, improve the shock resistance of bearing inner race;
By the middle damping set between bearing inner race and bearing outer ring, protect bearing inner race and bearing outer ring Maintain an equal level row, prevent between bearing inner race and bearing outer ring because the rotating shaft inside bearing inner race make under wobbler action bearing inner race and Rub between bearing outer ring, bearing inner race and bearing outer ring are propped up using the spring inside end casing both sides and movable block Support, ensure that the gap between the various pieces between bearing inner race and bearing outer ring is consistent, reduce bearing inner race and bearing outer ring Between when motion frictional force, the design effectively ensures between the various pieces between bearing inner race and bearing outer ring Gap is consistent, reduces between bearing inner race and bearing outer ring frictional force when motion, while effectively avoid because of rotating shaft The influence beated in the running to bearing inner race, improve the shock resistance of bearing inner race.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the good plastic bearing of anti-seismic performance proposed by the present invention;
Fig. 2 is a kind of structural representation of the good plastic bearing inner ring damping of anti-seismic performance proposed by the present invention;
Fig. 3 is the structural representation of damping among a kind of good plastic bearing of anti-seismic performance proposed by the present invention;
Fig. 4 is that the local of damping among a kind of good plastic bearing of anti-seismic performance proposed by the present invention provides big knot Structure schematic diagram;
Fig. 5 is that a kind of the local of the good plastic bearing inner ring damping of anti-seismic performance proposed by the present invention provides big knot Structure schematic diagram.
In figure:1 bearing inner race, 2 bearing outer rings, 3 inner ring dampings, 4 first chutes, 5 second holding tanks, 6 first hold Receive groove, 7 rolling elements, 8 retainers, 9 middle dampings, 10 second chutes, 11 end casings, 12 holding tanks, 13 movable blocks, 14 slide Block, 15 springs, 16 collars, 17 motion bars, 18 sleeves, 19 hydraulic oil, 20 stopper slots, 21 pistons, 22 sealing rings, 23 keep set Ring.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.
Reference picture 1-5, a kind of good plastic bearing of anti-seismic performance, including bearing inner race 1, the outer ring of bearing inner race 1 are lived Dynamic to be socketed with bearing outer ring 2, the both ends movable sleeve of bearing inner race 1 is connected to is connected to inner ring damping with the slip cap of bearing inner race 1 3, the both ends of bearing outer ring 2 offer the first chute 4 being slidably socketed with inner ring damping 3, the outer ring of bearing inner race 1 along its Axis direction array offers the first holding tank 6, and the inner ring of bearing outer ring 2 offers along its axis direction array to be accommodated with first Second holding tank 5 corresponding to groove 6, strip rolling element 7, rolling element 7 are filled between the second holding tank 5 and the first holding tank 6 Outer ring movable sleeve be connected to the retainer 8 being coaxially disposed along bearing inner race 1, the both ends of retainer 8 be provided with bearing inner race 1 and The middle damping 9 of the pivot bush unit of bearing outer ring 2, bearing inner race 1 and the side close to each other of bearing outer ring 2 offer with The second chute 10 that middle damping 9 is slidably connected.
Inner ring damping 3 includes the collar 16 with the both ends pivot bush unit of bearing inner race 1, and the collar 16 is away from bearing inner race 1 Axis direction array of one end outer ring along the collar 16 be hinged with motion bar 17, the one end of motion bar 17 away from the collar 16 is hinged with Piston 21, the outer ring slip cap of piston 21 are connected to sleeve 18, and the inside of sleeve 18 offers is connected to strip with the slip cap of piston 21 Shape stopper slot 20, the one end of sleeve 18 away from motion bar 17 are welded with the ball being slidably connected with the first chute 4, sleeve 18 it is interior Portion is filled with buffering hydraulic oil 19, and the outer ring fixed cover of piston 21 is connected to the sealing ring 22 being slidably socketed with stopper slot 20, set Ring 16 extends the length of bearing inner race 1, virtually increases the contact area for the rotating shaft that bearing inner race 1 is secured to, while rotating shaft Promote the motion bar 17 on the collar 16 to move when deflection, work is then utilized in the presence of the hydraulic oil 19 inside sleeve 18 Plug 21 enters row buffering, effectively avoids the influence beated in the running to bearing inner race 1 by rotating shaft, improves bearing inner race 1 Shock resistance.
Middle damping 9 includes the end casing 11 being arranged between bearing inner race 1 and bearing outer ring 2, end casing 11 Inner ring and outer ring offer strip holding tank 12 along its axis direction array, and the internal slide of holding tank 12 is socketed with movable block 13, one end that movable block 13 stretches into holding tank 12 is welded with the spring 15 being fixedly connected with holding tank 12, and movable block 13, which stretches out, to be held Receiving one end of groove 12 is welded with the circular arc sliding block 14 being slidably connected with the second chute 10, and middle damping 9 is arranged on bearing Between inner ring 1 and bearing outer ring 2, make bearing inner race 1 and the keeping parallelism of bearing outer ring 2, prevent bearing inner race 1 and bearing outer ring 2 Between make to rub between bearing inner race 1 and bearing outer ring 2 under wobbler action because of the rotating shaft inside bearing inner race 1, utilize end cap Spring 15 and movable block 13 inside the both sides of plate 11 are supported to bearing inner race 1 and bearing outer ring 2, ensure the He of bearing inner race 1 The gap between various pieces between bearing outer ring 2 is consistent, reduce between bearing inner race 1 and bearing outer ring 2 motion when Wait frictional force.
The outer ring fixed cover of sleeve 18 is connected to the holding collar 23 being coaxially disposed with bearing outer ring 2, and keeps the collar 23 Inner ring and the pivot bush unit of bearing outer ring 2, keep the collar 23 to be defined sleeve 18, make the meta of sleeve 18 and bearing inner race 1 Put and be consistent, balanced sleeve 18 is to the thrust of motion bar 17, so that the reaction force of the countershaft of bearing inner race 1 is balanced.
End casing 11 offers positioning hole close to the side of retainer 8, and the both ends of retainer 8 offer docks with positioning hole Butt hole, the alignment pin fixedly sleeved with positioning hole is installed on butt hole, end casing 11 passes through fixing screws and retainer 8 It is fixedly connected.
Operation principle:
Rotating shaft is socketed in the inner side of bearing inner race 1, the collar 16 is fixedly sleeved in rotating shaft, and the collar 16 extends bearing inner race 1 length, virtually increase the contact area for the rotating shaft that bearing inner race 1 is secured to, while set is promoted when rotating shaft deflection Motion bar 17 on ring 16 moves, and then enters row buffering using piston 21 in the presence of the hydraulic oil 19 inside sleeve 18, has The shock resistance for avoiding the influence beated in the running to bearing inner race 1 by rotating shaft, improving bearing inner race 1 of effect;Simultaneously Middle damping 9 is arranged between bearing inner race 1 and bearing outer ring 2, makes bearing inner race 1 and the keeping parallelism of bearing outer ring 2, is prevented Only because the rotating shaft inside bearing inner race 1 makes bearing inner race 1 and bearing under wobbler action between bearing inner race 1 and bearing outer ring 2 Rub between outer ring 2, bearing inner race 1 and bearing outer ring 2 are entered using the spring 15 inside the both sides of end casing 11 and movable block 13 Row support, ensure that the gap between the various pieces between bearing inner race 1 and bearing outer ring 2 is consistent, reduce bearing inner race 1 and axle Frictional force, the design effectively ensure each portion between bearing inner race and bearing outer ring when motion between bearing outer-ring 2 / gap it is consistent, reduce between bearing inner race and bearing outer ring frictional force when motion, while effectively avoid Because of the influence that rotating shaft is beated to bearing inner race in the running, the shock resistance of bearing inner race is improved.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.

Claims (6)

1. a kind of good plastic bearing of anti-seismic performance, including bearing inner race (1), it is characterised in that the bearing inner race (1) Outer ring movable sleeve is connected to bearing outer ring (2), and the both ends movable sleeve of the bearing inner race (1) is connected to and bearing inner race (1) slip cap Inner ring damping (3) is connected to, the both ends of the bearing outer ring (2) offer be slidably socketed with inner ring damping (3) One chute (4), the outer ring of the bearing inner race (1) offer the first holding tank (6) along its axis direction array, outside the bearing The inner ring for enclosing (2) offers the second holding tank (5) corresponding with the first holding tank (6) along its axis direction array, and described second Strip rolling element (7), the outer ring pivot bush unit of the rolling element (7) are filled between holding tank (5) and the first holding tank (6) There is the retainer (8) being coaxially disposed along bearing inner race (1), the both ends of the retainer (8) are provided with and bearing inner race (1) and axle The middle damping (9) of bearing outer-ring (2) pivot bush unit, the bearing inner race (1) and bearing outer ring (2) side close to each other Offer the second chute (10) being slidably connected with middle damping (9).
A kind of 2. good plastic bearing of anti-seismic performance according to claim 1, it is characterised in that the inner ring damping machine Structure (3) includes the collar (16) with bearing inner race (1) both ends pivot bush unit, the collar (16) away from bearing inner race (1) one Hold axis direction array of the outer ring along the collar (16) to be hinged with motion bar (17), the motion bar (17) away from the collar (16) one End is hinged with piston (21), and the outer ring slip cap of the piston (21) is connected to sleeve (18), and the inside of the sleeve (18) opens up Have and be connected to strip stopper slot (20) with piston (21) slip cap, the one end of the sleeve (18) away from motion bar (17) is welded with The ball being slidably connected with the first chute (4).
A kind of 3. good plastic bearing of anti-seismic performance according to claim 1, it is characterised in that the middle damping machine Structure (9) includes the end casing (11) being arranged between bearing inner race (1) and bearing outer ring (2), the inner ring of the end casing (11) Strip holding tank (12) is offered along its axis direction array with outer ring, the internal slide of the holding tank (12) is socketed with work Motion block (13), one end that the movable block (13) stretches into holding tank (12) are welded with the spring being fixedly connected with holding tank (12) (15), one end of movable block (13) the stretching holding tank (12) is welded with the circular arc being slidably connected with the second chute (10) and slided Block (14).
A kind of 4. good plastic bearing of anti-seismic performance according to claim 1 or 2, it is characterised in that the sleeve (18) inside is connected to and stopper slot (20) slip filled with buffering with hydraulic oil (19), the outer ring fixed cover of the piston (21) The sealing ring (22) of socket.
A kind of 5. good plastic bearing of anti-seismic performance according to claim 1 or 2, it is characterised in that the sleeve (18) outer ring fixed cover is connected to the holding collar (23) being coaxially disposed with bearing outer ring (2), and keeps the inner ring of the collar (23) With bearing outer ring (2) pivot bush unit.
A kind of 6. good plastic bearing of anti-seismic performance according to claim 1 or 3, it is characterised in that the end casing (11) positioning hole is offered close to the side of retainer (8), the both ends of the retainer (8) offer pair docked with positioning hole Connect hole, the alignment pin fixedly sleeved with positioning hole be installed on the butt hole, the end casing (11) by fixing screws with Retainer (8) is fixedly connected.
CN201710780477.XA 2017-09-01 2017-09-01 A kind of good plastic bearing of anti-seismic performance Active CN107575470B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710780477.XA CN107575470B (en) 2017-09-01 2017-09-01 A kind of good plastic bearing of anti-seismic performance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710780477.XA CN107575470B (en) 2017-09-01 2017-09-01 A kind of good plastic bearing of anti-seismic performance

Publications (2)

Publication Number Publication Date
CN107575470A true CN107575470A (en) 2018-01-12
CN107575470B CN107575470B (en) 2019-03-19

Family

ID=61029742

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710780477.XA Active CN107575470B (en) 2017-09-01 2017-09-01 A kind of good plastic bearing of anti-seismic performance

Country Status (1)

Country Link
CN (1) CN107575470B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113653733A (en) * 2021-07-01 2021-11-16 聊城鲁寰轴承有限公司 Radial-axial composite deep groove ball thrust ball bearing
CN114688142A (en) * 2022-02-22 2022-07-01 安徽中麦亚机电科技有限公司 Air-conditioning refrigeration compressor crankshaft capable of reducing bearing wear and reducing method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1109147A (en) * 1993-11-12 1995-09-27 韩国机械研究院 Lateral vibration isolators utilizing leaf springs
KR20030081861A (en) * 2002-04-15 2003-10-22 한국델파이주식회사 Ball bearing assembly for absorbing impact energy and vibration
CN203948443U (en) * 2014-07-26 2014-11-19 慈溪市特种轴承有限公司 Damping bearing
WO2015073361A1 (en) * 2013-11-14 2015-05-21 Borgwarner Inc. Bearing arrangement
CN106763173A (en) * 2017-02-20 2017-05-31 苏州骏创汽车科技股份有限公司 A kind of suspension bearing of automobiles plastic parts
CN206309770U (en) * 2016-10-17 2017-07-07 新昌县镜岭镇胜泰轴承配件厂 A kind of bearing with shock-absorbing function

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1109147A (en) * 1993-11-12 1995-09-27 韩国机械研究院 Lateral vibration isolators utilizing leaf springs
KR20030081861A (en) * 2002-04-15 2003-10-22 한국델파이주식회사 Ball bearing assembly for absorbing impact energy and vibration
WO2015073361A1 (en) * 2013-11-14 2015-05-21 Borgwarner Inc. Bearing arrangement
CN203948443U (en) * 2014-07-26 2014-11-19 慈溪市特种轴承有限公司 Damping bearing
CN206309770U (en) * 2016-10-17 2017-07-07 新昌县镜岭镇胜泰轴承配件厂 A kind of bearing with shock-absorbing function
CN106763173A (en) * 2017-02-20 2017-05-31 苏州骏创汽车科技股份有限公司 A kind of suspension bearing of automobiles plastic parts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113653733A (en) * 2021-07-01 2021-11-16 聊城鲁寰轴承有限公司 Radial-axial composite deep groove ball thrust ball bearing
CN113653733B (en) * 2021-07-01 2022-12-02 聊城鲁寰轴承有限公司 Radial-axial composite deep groove ball thrust ball bearing
CN114688142A (en) * 2022-02-22 2022-07-01 安徽中麦亚机电科技有限公司 Air-conditioning refrigeration compressor crankshaft capable of reducing bearing wear and reducing method thereof

Also Published As

Publication number Publication date
CN107575470B (en) 2019-03-19

Similar Documents

Publication Publication Date Title
CN107575470A (en) A kind of good plastic bearing of anti-seismic performance
JP6079983B2 (en) Rotary cutting device having vibration damping means
CN105973740B (en) High differential speed rotation " surface-to-surface " contact wear experimental rig and test method
JP6078867B2 (en) Rotary cutting device having vibration damping means
CN106286601A (en) A kind of bearing
CN103649400A (en) Shock absorber having an improved friction element
JP2012522952A (en) Control friction slide device such as a damper that can operate in two directions
CN113738818B (en) Two-dimensional vibration isolator capable of exciting and isolating any displacement in opposite surface
CN107177960B (en) Damping suspender structure of washing machine and washing machine
KR101432894B1 (en) A caster with a 180-degree rotation is easy
CN101240836B (en) Load sensing drive force transmission device
CN106050904A (en) Spherical roller bearing arrangement
US2858173A (en) Elastic shaft mounting
CN207080494U (en) A kind of rolling bearing of counter-rotation type, composite rolling body layout type
CN207494879U (en) A kind of rotatable auto parts processing platform
CN201889544U (en) Attached frame of band sawing machine
CN208546440U (en) A kind of combination type thrust bearing in series connection
KR20230104933A (en) bearings and seals
CN207989581U (en) A kind of clutch with tourelle
CN208804121U (en) A kind of bearing ring facilitating installation
CN208076154U (en) bearing tester
CN207840590U (en) A kind of integrated machine accessory automatic assembly equipment
KR101831239B1 (en) A roller bearing
US2683066A (en) Unit hub and bearing assembly
US20160050944A1 (en) Peeling apparatus with long-life finger-frame cam rollers

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: A plastic bearing with good seismic performance

Effective date of registration: 20220715

Granted publication date: 20190319

Pledgee: Ningbo Zhenhai Rural Commercial Bank Co.,Ltd. Jiulonghu sub branch

Pledgor: NINGBO CHUANGXINA BEARINGS CO.,LTD.

Registration number: Y2022330001424

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: 20230815

Granted publication date: 20190319

Pledgee: Ningbo Zhenhai Rural Commercial Bank Co.,Ltd. Jiulonghu sub branch

Pledgor: NINGBO CHUANGXINA BEARINGS CO.,LTD.

Registration number: Y2022330001424

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