CN112161007B - Pawl anti-collision mechanism of pawl type overrunning clutch - Google Patents
Pawl anti-collision mechanism of pawl type overrunning clutch Download PDFInfo
- Publication number
- CN112161007B CN112161007B CN202011115133.5A CN202011115133A CN112161007B CN 112161007 B CN112161007 B CN 112161007B CN 202011115133 A CN202011115133 A CN 202011115133A CN 112161007 B CN112161007 B CN 112161007B
- Authority
- CN
- China
- Prior art keywords
- pawl
- movable rod
- overrunning clutch
- magnetic
- right end
- 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
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 230000005389 magnetism Effects 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/12—Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The invention relates to the technical field of mechanical equipment and discloses a pawl anti-collision mechanism of a pawl type overrunning clutch. According to the invention, the magnet opposite attraction reset mechanism replaces a traditional spring reset mechanism, so that when the pawl type overrunning clutch works normally, the right end of the pawl can be opposite attracted with the right end of the pawl through the right end of the movable rod, the right end of the pawl can be always contacted with the inner surface of the driven plate when the pawl type overrunning clutch works normally, the normal transmission and overrunning separation of the overrunning clutch are ensured, and the problem that after the traditional pawl type overrunning clutch works for a long time, the spring reset mechanism has elastic fatigue or the spring is broken and deformed, and the like, so that the working life of the overrunning clutch is shortened or the overrunning clutch cannot work normally is solved.
Description
Technical Field
The invention relates to the technical field of mechanical equipment, in particular to a pawl anti-collision mechanism of a pawl type overrunning clutch.
Background
The overrunning clutch is an important part with power transmission and separation functions between a prime mover and a working machine or between a driving shaft and a driven shaft in the machine, is a device with self-clutch function by utilizing the speed change or rotation direction change of the driving part and the driven part, and is divided into a pawl type overrunning clutch, a wedge type overrunning clutch and a roller type overrunning clutch.
The traditional pawl type overrunning clutch mainly comprises a ratchet wheel and a pawl and is characterized by simple structure, reliable work, and the pawl is driven by the driving disk to push the driven disk to rotate, so that the friction loss is small during the work, the service life is long, but when the pawl type overrunning clutch works normally, because the pawl is continuously stirred when in the overrunning state, the pawl can impact the driven plate of the overrunning clutch to generate larger noise, and the pawl is usually reset through the V-shaped elastic sheet, so that after the pawl type overrunning clutch is in an overrunning state for a long time, the elasticity of the elastic sheet is weakened due to elastic fatigue, so that the stress area of the pawl is reduced, or the elastic sheet is broken and deformed, so that the pawl cannot be effectively reset, the service life of the pawl is influenced, and the service life of the pawl type overrunning clutch is shortened.
Disclosure of Invention
Aiming at the defects of the prior pawl type overrunning clutch in the background technology in the using process, the invention provides the pawl anti-collision mechanism of the pawl type overrunning clutch, which has the advantages of pawl anti-collision and service life guarantee and solves the technical problems in the background technology.
The invention provides the following technical scheme: the utility model provides a pawl formula freewheel clutch's pawl anticollision institution, includes the driving disk, the card hole has been seted up to the inner chamber of driving disk, the surface activity of driving disk has cup jointed the driven plate, the outer fixed surface in card hole is connected with the dwang, the surface swing joint in card hole has the pawl that is located the dwang surface, movable chamber has been seted up to the inner chamber of driven plate, movable rod has been cup jointed in the inner chamber activity in movable chamber, pawl and movable rod are magnetic material and make, and the magnetic pole of movable rod right-hand member is different with the magnetic pole of pawl right-hand member, the inner wall of driven plate is provided with the draw-in groove with the one end swing joint department of pawl, the inner wall of driven plate is provided with the arc wall that is located draw-in groove one side.
Preferably, the inner cavity of the movable cavity is fixedly connected with a magnetic sleeve positioned in the middle of the movable rod, the pawl is in a V shape with a left end short and a right end long, the magnetic pole at the left end of the pawl is different from the magnetic pole at the left end of the movable rod, and the magnetism at the right end of the pawl is smaller than that at the left end.
Preferably, both ends of the movable rod are fixedly connected with magnetic conduction blocks, and the magnetic conduction sleeve and the magnetic conduction blocks are made of copper.
The invention has the following beneficial effects:
1. according to the invention, the magnet opposite attraction reset mechanism replaces a traditional spring reset mechanism, so that when the pawl type overrunning clutch works normally, the right end of the pawl can be opposite attracted with the right end of the pawl through the right end of the movable rod, the right end of the pawl can be always contacted with the inner surface of the driven plate when the pawl type overrunning clutch works normally, the normal transmission and overrunning separation of the overrunning clutch are ensured, and the problem that after the traditional pawl type overrunning clutch works for a long time, the spring reset mechanism has elastic fatigue or the spring is broken and deformed, and the like, so that the working life of the overrunning clutch is shortened or the overrunning clutch cannot work normally is solved.
2. According to the invention, by arranging the pawl anti-collision mechanism, when the pawl type overrunning clutch is in an overrunning state due to the fact that the rotating speed of the driven disc is greater than that of the driving disc, the movable rod can move leftwards in the movable cavity under the action that the left end of the pawl and the left end of the movable rod are attracted through magnetic force adsorption, and the magnetic property of the left end of the pawl is greater than that of the right end, and the magnetic pole of the right end of the pawl is the same as that of the left end of the movable rod, so that the bottom surface of the pawl can be always in a state of being attached to the driving disc in the overrunning state, the driven disc and the driving disc are always separated, the pawl cannot be in reciprocating impact with the driven disc due to resetting, the situation of generating larger noise is avoided, and the working life of the protected driven disc and the pawl is prolonged.
3. According to the invention, the magnetic conductive sleeve and the magnetic conductive block which are made of copper are arranged, so that when the pawl type overrunning clutch works normally, most of the right end of the middle part of the movable rod is positioned in the magnetic conductive sleeve, the magnetic field at the right end of the movable rod is weakened, the normal work of a pawl is not influenced at the right end of the movable rod, and when the pawl type overrunning clutch is in an overrunning state, the movable rod moves leftwards under the action of the magnetic force at the left end of the pawl, so that the magnetic conductive block at the right end of the movable rod is in contact with the magnetic conductive sleeve, the right end of the movable rod is positioned in a relatively closed space, the magnetism at the right end of the movable rod is weakened to the maximum extent, the right end of the movable rod can not adsorb the right end of the pawl when the clutch is in the overrunning state, and the continuous separation of the driven plate and the driving plate in the overrunning state is ensured.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view of the structure of the present invention;
FIG. 3 is a cross-sectional view of the structure of the present invention in an overrunning condition;
FIG. 4 is an enlarged view of the point A in FIG. 1;
FIG. 5 is an enlarged view of the point B in FIG. 3 according to the present invention.
In the figure: 1. a driving disk; 2. a clamping hole; 3. a driven plate; 4. a pawl; 5. rotating the rod; 6. a movable cavity; 7. a magnetic conduction block; 8. a flux sleeve; 9. a movable rod; 10. a card slot; 11. an arc-shaped slot; .
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a pawl anti-collision mechanism of a pawl type overrunning clutch comprises a driving disc 1, a clamping hole 2 is formed in an inner cavity of the driving disc 1, a driven disc 3 is movably sleeved on an outer surface of the driving disc 1, a rotating rod 5 is fixedly connected to the outer surface of the clamping hole 2, a pawl 4 located on the outer surface of the rotating rod 5 is movably connected to the outer surface of the clamping hole 2, a movable cavity 6 is formed in an inner cavity of the driven disc 3, a movable rod 9 is movably sleeved in the inner cavity of the movable cavity 6, the pawl 4 and the movable rod 9 are made of magnetic materials, a magnetic pole at the right end of the movable rod 9 is different from a magnetic pole at the right end of the pawl 4, a clamping groove 10 is formed at a movable connection position of the inner wall of the driven disc 3 and one end of the pawl 4, an arc-shaped groove 11 located on one side of the clamping groove 10 is formed in the inner wall of the driven disc 3, so that when the overrunning clutch normally works, the right end of the movable rod 9 and the right end of the pawl 4 attract each other, make pawl 4 be in the state of right-hand member perk all the time, thereby make 4 right-hand members perk of pawl, and support one side of draw-in groove 10, make 1 can promote draw-in groove 10 through pawl 4 when rotating of driving plate, make driven plate 3 can rotate in step, and when freewheel clutch is in the state of surging, can stir pawl 4 through arc wall 11, make pawl 4 encircle dwang 5 and rotate, thereby make driven plate 3 can not drive 1 rotations of driving plate, and pawl 4 can be fast perk once more under the magnetic force looks of movable rod 9 right-hand members after rolling out arc wall 11.
Wherein, the inner cavity of the movable cavity 6 is fixedly connected with a magnetic conductive sleeve 8 positioned in the middle of the movable rod 9, the pawl 4 is in a V shape with a short left end and a long right end, the magnetic pole at the left end of the pawl 4 is different from the magnetic pole at the left end of the movable rod 9, and the magnetism at the right end of the pawl 4 is smaller than that at the left end, through the V-shaped pawl 4, when the overrunning clutch is in an overrunning state, the movable rod 9 can move leftwards in the movable cavity 6 by being attracted by the left end of the pawl 4 and the left end of the movable rod 9, under the action that the magnetism at the left end of the pawl 4 is larger than that at the right end and the like poles repel each other at the left end of the pawl 4 and the left end of the movable rod 9, the bottom surface at the right end of the pawl 4 can be always attached to the outer surface of the driving disc 1, so that the driven disc 3 and the driving disc 1 can be always in a separated state, and the pawl 4 can not cause the right end to continuously collide with the driven disc 3 due to reset when in the overrunning state, a situation occurs in which loud noise is emitted.
Wherein, both ends of the movable rod 9 are fixedly connected with the magnetic conductive blocks 7, and the magnetic conductive sleeves 8 and the magnetic conductive blocks 7 are made of copper, because the copper is a poor conductor of magnetism, the magnetic induction line of the movable rod 9 can be outwards wound when passing through the copper magnetic conductive sleeves 8 and the magnetic conductive blocks 7, so that the strength of the magnetic field is weakened, when the overrunning clutch is in a normal state, the magnetic conductive sleeve 8 which is positioned on the left side in the middle of the movable rod 9 can weaken the magnetic field at the left end of the movable rod 9, so that the pawl 4 can be always in a state that the left end is tightly attached to the driving disk 1 and the right end is tilted, and when the overrunning clutch is in a normal state, the right end of the movable rod 9 is positioned in a relatively closed space under the action of the magnetic conductive blocks 7 and the magnetic conductive sleeves 8, so that the magnetic field at the right end of the movable rod 9 is greatly weakened, so that the pawl 4 at the moment can be always in a state that the right end is tightly attached to the driving disk 1 and the left end is tilted, so that the driven disk 3 is separated from the driving disk 1.
The using method of the invention is as follows: fixedly connecting the clamping hole 2 with a driving mechanism, fixedly connecting a driven disc 3 with a driven mechanism, and starting the driving mechanism to enable the overrunning clutch to work normally;
when the normal work is carried out: the driving disc 1 rotates under the action of the driving mechanism, and at the moment, the right end of the pawl 4 tilts around the rotating rod 5 under the action of opposite attraction of the right end of the movable rod 9, so that the right end of the pawl 4 is in contact with a clamping groove 10 on the inner side of the driven disc 3, and the bottom surface of the left end of the pawl 4 is in contact with the outer surface of the driving disc 1, so that the position of the pawl 4 is fixed, and the pawl 4 can be fixedly clamped through the clamping groove 10 to push the driven disc 3 to rotate synchronously through the rotation of the driving disc 1;
when in an overrunning state: when the driving disk 1 is powered off or decelerated by the driving mechanism, the driven disk 3 continuously rotates under the action of inertia, so that the driven disk 3 rotates at a speed higher than the rotating speed of the driving disk 1, and at the moment, the right end of the pawl 4 is pressed downwards when passing through the arc-shaped groove 11, so that the left end of the pawl 4 tilts, the movable rod 9 moves leftwards through opposite attraction of the left end of the pawl 4 and the left end of the movable rod 9, so that the right end of the movable rod 9 drives the magnetic conduction block 7 to move leftwards, the right end of the movable rod 9 is positioned in a relatively closed space under the action of the magnetic conduction sleeve 8 and the magnetic conduction block 7, the magnetism of the right end of the movable rod 9 is weakened, and the pawl 4 is attracted and repelled at the left end of the movable rod 9, so that the bottom surface of the right end of the pawl 4 is always contacted with the outer surface of the driving disk 1, so that the driving disk 1 is separated from the driven disk 3 and used next time, because the rotating speed of the driving disk 1 is greater than that of the driven disk 3, the movable rod 9 moves rightwards and returns to the normal state under the action of attraction between the left end of the pawl 4 and the left end of the movable rod 9.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a pawl formula freewheel clutch's pawl anticollision institution, includes driving disk (1), calorie hole (2) have been seted up to the inner chamber of driving disk (1), driven plate (3), its characterized in that have been cup jointed in the surface activity of driving disk (1): outer fixed surface in card hole (2) is connected with dwang (5), the surface swing joint in card hole (2) has pawl (4) that are located dwang (5) surface, movable chamber (6) have been seted up to the inner chamber of driven plate (3), movable rod (9) have been cup jointed in the inner chamber activity in activity chamber (6), pawl (4) and movable rod (9) are magnetic material and make, and the magnetic pole of movable rod (9) right-hand member is different with the magnetic pole of pawl (4) right-hand member, the inner wall of driven plate (3) is provided with draw-in groove (10) with the one end swing joint department of pawl (4), the inner wall of driven plate (3) is provided with arc wall (11) that are located draw-in groove (10) one side.
2. The pawl collision avoidance mechanism of a pawl type overrunning clutch according to claim 1, wherein: the magnetic ratchet wrench is characterized in that a magnetic sleeve (8) located in the middle of the movable rod (9) is fixedly connected to the inner cavity of the movable cavity (6), the pawl (4) is in a V shape with the left short and the right long, the magnetic pole at the left end of the pawl (4) is different from the magnetic pole at the left end of the movable rod (9), and the magnetism at the right end of the pawl (4) is smaller than that at the left end.
3. The pawl collision avoidance mechanism of a pawl type overrunning clutch according to claim 1, wherein: the two ends of the movable rod (9) are fixedly connected with magnetic conduction blocks (7), and the magnetic conduction sleeve (8) and the magnetic conduction blocks (7) are made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011115133.5A CN112161007B (en) | 2020-10-19 | 2020-10-19 | Pawl anti-collision mechanism of pawl type overrunning clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011115133.5A CN112161007B (en) | 2020-10-19 | 2020-10-19 | Pawl anti-collision mechanism of pawl type overrunning clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112161007A CN112161007A (en) | 2021-01-01 |
| CN112161007B true CN112161007B (en) | 2022-08-09 |
Family
ID=73867474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011115133.5A Active CN112161007B (en) | 2020-10-19 | 2020-10-19 | Pawl anti-collision mechanism of pawl type overrunning clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112161007B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2743610Y (en) * | 2004-10-12 | 2005-11-30 | 何建军 | Pawl wheel type overriding clutch |
| CN201425068Y (en) * | 2009-06-17 | 2010-03-17 | 庞仁 | Ratchet wheel-type overrunning coupler |
| CN107747600A (en) * | 2017-11-23 | 2018-03-02 | 常州信息职业技术学院 | A kind of good freewheel clutch of self-locking property |
| CN108662035A (en) * | 2018-07-25 | 2018-10-16 | 北京电子工程总体研究所 | A kind of mono-directional overrun clutch |
| CN208734760U (en) * | 2018-07-25 | 2019-04-12 | 北京电子工程总体研究所 | A kind of mono-directional overrun clutch |
| KR20200073636A (en) * | 2018-12-14 | 2020-06-24 | 현대 파워텍 주식회사 | One way clutch reducing drag force by using magnetic force |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9856928B2 (en) * | 2016-05-30 | 2018-01-02 | Roy Rosser | Magnetically hinged overrunning clutch |
-
2020
- 2020-10-19 CN CN202011115133.5A patent/CN112161007B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2743610Y (en) * | 2004-10-12 | 2005-11-30 | 何建军 | Pawl wheel type overriding clutch |
| CN201425068Y (en) * | 2009-06-17 | 2010-03-17 | 庞仁 | Ratchet wheel-type overrunning coupler |
| CN107747600A (en) * | 2017-11-23 | 2018-03-02 | 常州信息职业技术学院 | A kind of good freewheel clutch of self-locking property |
| CN108662035A (en) * | 2018-07-25 | 2018-10-16 | 北京电子工程总体研究所 | A kind of mono-directional overrun clutch |
| CN208734760U (en) * | 2018-07-25 | 2019-04-12 | 北京电子工程总体研究所 | A kind of mono-directional overrun clutch |
| KR20200073636A (en) * | 2018-12-14 | 2020-06-24 | 현대 파워텍 주식회사 | One way clutch reducing drag force by using magnetic force |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112161007A (en) | 2021-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7506788B2 (en) | Transmission mechanism for electrical nail gun | |
| WO1987004576A1 (en) | Magnetic rotary device | |
| US4207773A (en) | Magnetic piston machine | |
| CN100566081C (en) | The motor of band brake and have the robot device of this motor | |
| JP4813302B2 (en) | Magnetic torque transmission device | |
| CN112161007B (en) | Pawl anti-collision mechanism of pawl type overrunning clutch | |
| CN205715348U (en) | The brake apparatus of power transmission shaft gear transmission mechanism | |
| US11585107B2 (en) | Rebar tying machine wire feeding disc braking mechanism with positioning device | |
| US20230392655A1 (en) | Brake apparatus, motor and robot | |
| CN112932203A (en) | Automatic control rotary exhibition stand for advertisement media | |
| CN212785133U (en) | Elastic piece type VCM voice coil motor | |
| CN219075741U (en) | Disc brake and robot | |
| CN218101112U (en) | Direct current contactor iron core subassembly | |
| CN212305094U (en) | Magnetic suspension motor of sound wave electric toothbrush | |
| CN109736697B (en) | Clamp type anti-falling device for roller shutter door | |
| US12025194B2 (en) | Brake | |
| US20230086043A1 (en) | Magnetic Yoke Iron Core And Brake | |
| CN210919883U (en) | Electromagnetic clutch with double armatures | |
| CN214755907U (en) | Tubular motor with anti-sliding function | |
| CN219692082U (en) | Integrated power-losing disc brake | |
| CN109921602B (en) | Delayed starting method of magnetic coupler and delayed magnetic coupler | |
| CN111362025B (en) | Counterweight lifting mechanism of card printer | |
| CN216477228U (en) | Hydraulic oscillator | |
| CN212825491U (en) | Robot flip action structure | |
| JP2008051264A (en) | Magnetic torque transmission device |
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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220725 Address after: 276000 North Economic Development Zone of national highway 327, Mengshan South Road West, Pingyi County, Linyi City, Shandong Province (northeast corner of Pingyi Kangyue Automobile Trading Co., Ltd.) Applicant after: Shandong wotaike Transmission Machinery Co.,Ltd. Address before: 056000 No.35, group 26, Yuanqu village, Guxin Town, Shexian County, Handan City, Hebei Province Applicant before: Qin Jinfeng |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240322 Address after: 273300 West of the intersection of Banqiao Road and Huaihe Road in Pingyi County, Linyi City, Shandong Province Patentee after: Shandong Weihe Transmission Co.,Ltd. Country or region after: China Address before: 276000 North Economic Development Zone of national highway 327, Mengshan South Road West, Pingyi County, Linyi City, Shandong Province (northeast corner of Pingyi Kangyue Automobile Trading Co., Ltd.) Patentee before: Shandong wotaike Transmission Machinery Co.,Ltd. Country or region before: China |