CN112676137A - Steel ball screening and cleaning device for bearing machining - Google Patents
Steel ball screening and cleaning device for bearing machining Download PDFInfo
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- CN112676137A CN112676137A CN202011589452.XA CN202011589452A CN112676137A CN 112676137 A CN112676137 A CN 112676137A CN 202011589452 A CN202011589452 A CN 202011589452A CN 112676137 A CN112676137 A CN 112676137A
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- 238000012216 screening Methods 0.000 title claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 49
- 239000010959 steel Substances 0.000 title claims abstract description 49
- 238000004140 cleaning Methods 0.000 title claims abstract description 35
- 238000003754 machining Methods 0.000 title claims description 11
- 238000012545 processing Methods 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 27
- 230000005389 magnetism Effects 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 7
- 230000002146 bilateral effect Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 4
- 230000002950 deficient Effects 0.000 abstract description 11
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The invention discloses a steel ball screening and cleaning device for bearing processing, which comprises a vertical frame, wherein the top of the vertical frame is connected with a screening box, the top of the screening box is connected with a feeding mechanism, the left side wall and the right side wall of an inner cavity of the screening box are symmetrically provided with sliding grooves, the sliding grooves are connected with sliding blocks in a sliding manner, a mounting frame is connected between the two groups of sliding blocks, the middle part of the mounting frame is provided with a feed opening, a screening disc is arranged in the feed opening, the bottom of the screening box is provided with a discharge opening, a telescopic pipe is connected between the feed opening and the discharge opening, the lower end of the discharge opening is communicated; the sieve tray has reasonable structural design, avoids larger impact caused by excessive blanking at one time, prolongs the service life of the sieve tray, is thoroughly cleaned, is beneficial to subsequent assembly and use, effectively avoids the blockage of the sieve tray caused by the accumulation of steel balls, and avoids the mixing of qualified products and defective products.
Description
Technical Field
The invention relates to the technical field of bearing processing related equipment, in particular to a steel ball screening and cleaning device for bearing processing.
Background
The bearing is a component for fixing and reducing the load friction coefficient in the mechanical transmission process. It can also be said that the member for reducing the friction coefficient during power transmission and keeping the center position of the shaft fixed when the other members are moved relative to each other on the shaft. The bearing is a lightweight component in modern mechanical equipment, and the main function of the bearing is to support a mechanical rotating body so as to reduce the mechanical load friction coefficient of the equipment in the transmission process. The bearings can be classified into rolling bearings and sliding bearings according to the frictional properties of the moving elements.
The bearing mainly comprises a bearing inner ring, a bearing outer ring, steel ball balls and a retainer. In order to facilitate assembly and guarantee that a bearing can work stably and smoothly, a proper steel ball needs to be screened out during machining, the problem that the steel ball is too large in size and difficult to install is solved, the existing screening device is difficult to send out defective products timely during use, a screening disc is easy to block, scraps on the surface of the steel ball cannot be removed, and subsequent assembly is not facilitated is solved.
Disclosure of Invention
The invention aims to provide a steel ball screening and cleaning device for bearing processing, which aims to overcome the technical problems in the prior art.
In order to achieve the technical purpose and achieve the technical effect, the invention provides the following technical scheme:
the utility model provides a steel ball screening belt cleaning device for bearing processing, includes the grudging post, the top of grudging post is connected with the screening case, the top of screening case is connected with feed mechanism, the spout has been seted up to the inner chamber left and right sides wall symmetry of screening case, sliding connection has the slider in the spout, and is two sets of be connected with the mounting bracket between the slider, the dog-house has been seted up at the middle part of mounting bracket, be equipped with the screen tray in the dog-house, the discharge gate has been seted up to the bottom of screening case, be connected with flexible pipe between dog-house and the discharge gate, the lower extreme intercommunication of discharge gate has the washing case, be connected with compression spring.
Preferably, in the steel ball screening belt cleaning device for bearing processing, feed mechanism includes the hopper, the hopper is located the dog-house directly over, the intercommunication has the passage between hopper lower extreme and the screening case, the outer wall connection of passage has driving motor, driving motor's power take off end is connected with the steering spindle, the circumference lateral wall circumference equipartition of steering spindle has a plurality of groups of baffles, baffle outer wall butt passage inner wall.
Preferably, in a steel ball screening belt cleaning device for bearing processing, the right side wall of wasing the case is connected with the rotating electrical machines, the left side power take off end of rotating electrical machines is connected with the rotary rod, the equipartition has the clean pole of a plurality of groups on the circumference lateral wall that the rotary rod is located washing incasement chamber, the surface of clean pole is equipped with clean brush, the bottom of wasing the incasement chamber is provided with the drainage board, the slope of drainage board left end sets up downwards, the bottom intercommunication of wasing the case has the blow off pipe, the bottom left side of drainage board is equipped with the discharging pipe, all be equipped with the control valve on discharging pipe and the blow off pipe.
Preferably, in a steel ball screening belt cleaning device for bearing processing, the transmission groove has been seted up to the inner chamber left and right sides symmetry of mounting bracket, the inner chamber bottom sliding connection in transmission groove has the rack, the upper end meshing of rack is connected with drive gear, be connected with the fixed axle between drive gear and the sieve tray, the fixed axle rotates and connects the mounting bracket, rack end connection has the ejector pad, be connected with reset spring between ejector pad and the transmission inslot wall, the electromagnetic column is installed to rack embedded cooperation, the magnetic path is installed to transmission groove rear end gomphosis, the one end magnetism that electromagnetic column and magnetic path are close to is opposite.
Preferably, in a steel ball screening belt cleaning device for bearing processing, the inner wall bottom left and right sides symmetric connection of screening case has the stand, the lower extreme bilateral symmetry of mounting bracket has been seted up and has been erected the groove, the stand stretches into the one end of erecting the groove and is connected with the electric connection post, the recess has been seted up to the both ends symmetry about the electric connection post, the recess in-connection has the second spring, the second spring expansion end is connected with the conducting block, erect the inner chamber upper portion bilateral symmetry in groove and seted up the constant head tank, install the metal block in the constant head tank.
Preferably, in the steel ball screening and cleaning device for bearing processing, defective product channels are symmetrically formed in the left side and the right side of the lower portion of the screening box, one end, extending into the discharge port, of each defective product channel is connected with a fixed support, a driven shaft is connected to the fixed support in a rotating mode, a baffle is connected to the outer wall of the driven shaft, electromagnets are installed in the baffle in a matched mode, the two groups of electromagnets are opposite in magnetism at the ends, close to each other, of the electromagnets, a torsion spring is sleeved on the driven shaft, and the two ends of the torsion spring are fixedly connected with.
Preferably, in the steel ball screening and cleaning device for bearing processing, the electric connection column is externally connected with a power supply through a lead, and the metal block is connected with the electromagnetic column and the electromagnet through leads.
Preferably, in the steel ball screening and cleaning device for bearing machining, the gear ratio between the transmission gear and the rack is 1: 2.
Compared with the prior art, the invention has the beneficial effects that:
1. the bearing steel ball cleaning device is reasonable in structural design, bearing steel ball materials are placed in the hopper, the steering shaft is driven to rotate slowly by the driving motor, the position of the baffle is changed, the steel balls can fall into a feeding port below along the material guide pipe successively, large impact caused by excessive one-time blanking is avoided, the service life of the screen disc is prolonged, the steel balls in accordance with the size specification can fall through screen holes of the screen disc, can enter a discharge port below along the telescopic pipe and further fall into the cleaning box, the impact is reduced by buoyancy, the rotating rod is driven to rotate by the rotating motor, the cleaning rod is driven to rotate by the matching of the rotating rod, the cleaning brush can clean the surface of the steel balls, meanwhile, the steel balls can be turned over to enable the steel balls to be in full contact with water, the cleaning is thorough, the subsequent assembly and use are facilitated;
2. according to the invention, steel balls with excessive sizes are accumulated on the top of a sieve tray, the weight of an installation frame is increased along with the increase of the steel balls, the installation frame is guided through a sliding block and a sliding groove, the installation frame moves downwards after a compression spring is contracted, the relative positions of an electric connection column and a vertical groove at the upper end of an upright column are changed, when the electric connection column and a positioning groove are positioned at the same height, a second spring pushes a conductive block out of a groove, the conductive block is in contact with a metal block for power transmission, so that an electromagnet and an electromagnetic column generate magnetism after being electrified, the magnetic block is magnetically adsorbed by the electromagnetic column, the electromagnetic column drives a rack to move, a transmission gear is meshed with the surface of the rack, the transmission gear is connected with the sieve tray through a fixing shaft, the sieve;
3. when two groups of electromagnets are electrified to generate magnetism, the electromagnets can attract each other, the electromagnets are fixed in the baffle, and the baffle drives the driven shaft to rotate when the electromagnets are close to each other, so that the upper ends of the two groups of baffles are abutted to form an inverted V-shaped plate, the end part of the defective product channel is opened, the falling steel balls can enter the defective product channel along the V-shaped plate to slide out, the qualified products and the defective products are prevented from being mixed, and the subsequent collection and treatment are facilitated.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive labor.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the feed mechanism of the present invention;
FIG. 3 is a schematic view of the structure of the cleaning tank of the present invention;
FIG. 4 is a top view of a screen tray according to the present invention;
FIG. 5 is a side view of the baffle of the present invention;
fig. 6 is a partially enlarged schematic view of a portion a of fig. 1.
In the figure: 1. erecting a frame; 2. screening the box; 3. a feeding mechanism; 4. a chute; 5. a slider; 6. a mounting frame; 7. a feeding port; 8. a sieve tray; 9. a discharge port; 10. a telescopic pipe; 11. a cleaning tank; 12. a compression spring; 13. a transmission groove; 14. a rack; 15. a transmission gear; 16. a fixed shaft; 17. a push block; 18. a return spring; 19. an electromagnetic column; 20. a magnetic block; 21. a column; 22. a vertical slot; 23. connecting a power post; 24. a groove; 25. a second spring; 26. a conductive block; 27. positioning a groove; 28. a metal block; 29. a defective product channel; 30. fixing a bracket; 31. a driven shaft; 32. a baffle plate; 33. an electromagnet; 34. a torsion spring;
301. a hopper; 302. a material guide pipe; 303. a drive motor; 304. a steering shaft; 305. a baffle plate; 111. a rotating electric machine; 112. rotating the rod; 113. a cleaning rod; 114. a water filter plate; 115. a blow-off pipe; 116. and (4) discharging the pipe.
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.
Please refer to fig. 1-6, this embodiment is a steel ball screening belt cleaning device for bearing processing, including grudging post 1, the top of grudging post 1 is connected with screening case 2, the top of screening case 2 is connected with feed mechanism 3, spout 4 has been seted up to the inner chamber left and right sides wall symmetry of screening case 2, sliding connection has slider 5 in the spout 4, be connected with mounting bracket 6 between two sets of slider 5, dog-house 7 has been seted up at mounting bracket 6's middle part, be equipped with sieve tray 8 in the dog-house 7, discharge gate 9 has been seted up to screening case 2's bottom, be connected with flexible pipe 10 between dog-house 7 and the discharge gate 9, the lower extreme intercommunication of discharge gate 9 has washing case 11, be connected with compression spring 12 between mounting bracket.
The feeding mechanism 3 comprises a hopper 301, the hopper 301 is located over the feeding port 7, a material guide pipe 302 is communicated between the lower end of the hopper 301 and the screening box 2, the outer wall of the material guide pipe 302 is connected with a driving motor 303, the power output end of the driving motor 303 is connected with a steering shaft 304, a plurality of groups of baffles 305 are evenly distributed on the circumferential outer side wall of the steering shaft 304, and the outer walls of the baffles 305 are abutted to the inner wall of the material guide pipe 302.
The right side wall that washs case 11 is connected with rotating electrical machines 111, the left side power take off end of rotating electrical machines 111 is connected with rotary rod 112, rotary rod 112 is located the equipartition on the circumference lateral wall that washs the case 11 inner chamber and has a plurality of clean poles 113 of group, clean pole 113's surface is equipped with clean brush, the bottom of wasing the case 11 inner chamber is provided with water strainer plate 114, the slope of water strainer plate 114 left end sets up downwards, the bottom intercommunication that washs case 11 has blow off pipe 115, the bottom left side of water strainer plate 114 is equipped with discharging pipe 116, all be equipped with the control valve on discharging pipe 116 and the blow.
The transmission grooves 13 are symmetrically formed in the left side and the right side of an inner cavity of the mounting frame 6, a rack 14 is slidably connected to the bottom of the inner cavity of the transmission groove 13, a transmission gear 15 is connected to the upper end of the rack 14 in a meshed mode, a fixing shaft 16 is connected between the transmission gear 15 and the sieve tray 8, the fixing shaft 16 is rotatably connected with the mounting frame 6, a push block 17 is connected to the end portion of the rack 14, a reset spring 18 is connected between the push block 17 and the inner wall of the transmission groove 13, an electromagnetic column 19 is installed in the rack 14 in a matched mode, a magnetic block 20 is installed at the rear end of the transmission.
Inner wall bottom left and right sides symmetric connection of screening case 2 has stand 21, and the lower extreme bilateral symmetry of mounting bracket 6 has seted up perpendicular groove 22, and stand 21 stretches into the one end of erecting groove 22 and is connected with electrical connection post 23, and electrical connection post 23 controls both ends symmetry and has seted up recess 24, and recess 24 in-connection has second spring 25, and second spring 25 expansion end is connected with conducting block 26, erects the inner chamber upper portion bilateral symmetry of groove 22 and has seted up constant head tank 27, installs metal block 28 in the constant head tank 27.
The power connection pole 23 is externally connected with a power supply through a lead, the metal block 28 is connected with the electromagnetic pole 19 and the electromagnet 33 through leads, and when the conductive block 26 of the power connection pole 23 contacts the metal block 28, the electromagnetic pole 19 and the electromagnet 33 are electrified to generate magnetism.
The gear ratio between the transmission gear 15 and the rack 14 is 1:2, and when the rack 14 moves to one end, the transmission gear 15 just rotates one circle.
The specific implementation manner of this embodiment is:
when the device is used, the vertical frame 1 is arranged on a plane, bearing steel ball materials are arranged in the hopper 301, the driving motor 303 drives the steering shaft 304 to rotate slowly, so that the position of the baffle 305 is changed, the steel balls can fall into the feeding port 7 below along the material guide pipe 302 successively, large impact caused by excessive blanking at one time is avoided, and the service life of the sieve tray 8 is prolonged;
when the steel balls enter the upper part of the sieve tray 8, the steel balls in accordance with the size and specification fall through sieve holes of the sieve tray 8 and can enter a discharge port 9 on the lower part along the telescopic pipe 10 and then fall into the cleaning box 11, the impact is reduced through buoyancy, the rotating rod 112 is driven to rotate through the rotating motor 111, the cleaning rod 113 is driven to rotate through the matching of the rotating rod 112, the cleaning brush can clean the surfaces of the steel balls, meanwhile, the steel balls can be turned over to enable the steel balls to be fully contacted with water, the cleaning is thorough, the subsequent assembly and use are facilitated, sewage is discharged through the sewage discharge pipe 115 after the cleaning is finished, and the steel balls are;
steel balls with excessive sizes are accumulated on the top of the sieve tray 8, the weight of the mounting frame 6 is increased along with the increase of the steel balls, the sliding block 5 is matched with the sliding groove 4 for guiding, the mounting frame 6 moves downwards after the compression spring 12 contracts, the relative positions of the electric connection column 23 and the vertical groove 22 at the upper end of the upright post 21 are changed, when the electric connection column 23 and the positioning groove 27 are located at the same height, the second spring 25 pushes the conductive block 26 out of the groove 24, the conductive block 26 is in contact with the metal block 28, so that the electromagnet 33 and the electromagnetic column 19 generate magnetism after being electrified, the magnetic block 20 is magnetically adsorbed by the electromagnetic column 19, the electromagnetic column 19 drives the rack 14 to move, the surface of the rack 14 is meshed with the transmission gear 15, the transmission gear 15 is connected with the sieve tray 8 through the fixing shaft 16, the sieve tray 8 can be turned over by 180 degrees, the steel balls at;
when two sets of electromagnets 33 are electrified to generate magnetism, the electromagnets 33 can attract each other, the electromagnets 33 are fixed inside the baffle 32, the baffle 32 drives the driven shaft 31 to rotate when the electromagnets 33 are close to each other, so that the upper ends of the two sets of baffles 32 are abutted to form inverted V-shaped plates, the end part of the defective product channel 29 is opened, the falling steel balls can enter the defective product channel along the V-shaped plates to slide out, the mixing of qualified products and defective products is avoided, and the subsequent collection and treatment are facilitated.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a steel ball screening belt cleaning device for bearing processing, includes grudging post (1), its characterized in that: the top of grudging post (1) is connected with screening case (2), the top of screening case (2) is connected with feed mechanism (3), spout (4) have been seted up to the inner chamber left and right sides wall symmetry of screening case (2), sliding connection has slider (5) in spout (4), and is two sets of be connected with between slider (5) mounting bracket (6), dog-house (7) have been seted up at the middle part of mounting bracket (6), be equipped with screen tray (8) in dog-house (7), discharge gate (9) have been seted up to the bottom of screening case (2), be connected with flexible pipe (10) between dog-house (7) and discharge gate (9), the lower extreme intercommunication of discharge gate (9) has washing case (11), be connected with compression spring (12) between mounting bracket (6) and screening case (2) inner chamber bottom.
2. The screening and cleaning device for the steel balls for bearing machining according to claim 1, characterized in that: feed mechanism (3) are including hopper (301), hopper (301) are located dog-house (7) directly over, the intercommunication has passage (302) between hopper (301) lower extreme and screening case (2), the outer wall connection of passage (302) has driving motor (303), the power take off end of driving motor (303) is connected with steering spindle (304), the circumference lateral wall circumference equipartition of steering spindle (304) has a plurality of groups baffle (305), baffle (305) outer wall butt passage (302) inner wall.
3. The screening and cleaning device for the steel balls for bearing machining according to claim 1, characterized in that: the right side wall of wasing case (11) is connected with rotating electrical machines (111), the left side power take off end of rotating electrical machines (111) is connected with rotary rod (112), the equipartition has clean pole (113) of a plurality of groups on the circumference lateral wall that is located to wash case (11) inner chamber rotary rod (112), the surface of clean pole (113) is equipped with clean brush, the bottom of wasing case (11) inner chamber is provided with drainage board (114), drainage board (114) left end slope sets up downwards, the bottom intercommunication of wasing case (11) has blow off pipe (115), the bottom left side of drainage board (114) is equipped with discharging pipe (116), all be equipped with the control valve on discharging pipe (116) and blow off pipe (115).
4. The screening and cleaning device for the steel balls for bearing machining according to claim 1, characterized in that: transmission groove (13) have been seted up to the inner chamber left and right sides symmetry of mounting bracket (6), the inner chamber bottom sliding connection of transmission groove (13) has rack (14), the upper end meshing of rack (14) is connected with drive gear (15), be connected with between drive gear (15) and sieve dish (8) fixed axle (16), fixed axle (16) are rotated and are connected mounting bracket (6), rack (14) end connection has ejector pad (17), be connected with reset spring (18) between ejector pad (17) and transmission groove (13) inner wall, electromagnetism post (19) are installed in rack (14) embedding, magnetic path (20) are installed to transmission groove (13) rear end gomphosis, electromagnetism post (19) are opposite with the one end magnetism that magnetic path (20) are close to mutually.
5. The screening and cleaning device for the steel balls for bearing machining according to claim 4, characterized in that: inner wall bottom left and right sides symmetric connection of screening case (2) has stand (21), the lower extreme bilateral symmetry of mounting bracket (6) has been seted up and has been erected groove (22), stand (21) stretch into the one end of erecting groove (22) and be connected with electric post (23), both ends symmetry has seted up recess (24) about electric post (23), recess (24) in-connection has second spring (25), second spring (25) expansion end is connected with conducting block (26), erect inner chamber upper portion bilateral symmetry of groove (22) and seted up constant head tank (27), install metal block (28) in constant head tank (27).
6. The screening and cleaning device for the steel balls for bearing machining according to claim 5, characterized in that: substandard product passageway (29) have been seted up to screening case (2) lower part left and right sides symmetry, the one end that substandard product passageway (29) stretched into discharge gate (9) is connected with fixed bolster (30), it is connected with driven shaft (31) to rotate on fixed bolster (30), driven shaft (31) outer wall is connected with baffle (32), electromagnet (33) are installed to the embedding in baffle (32), and two sets of electromagnet (33) are close to mutually one end magnetism opposite, the cover is equipped with torsional spring (34) on driven shaft (31), fixed bolster (30) and baffle (32) are fixed connection respectively at torsional spring (34) both ends.
7. The screening and cleaning device for the steel balls for bearing machining according to claim 6, characterized in that: the power connection pole (23) is externally connected with a power supply through a lead, and the metal block (28) is connected with the electromagnetic pole (19) and the electromagnet (33) through leads.
8. The screening and cleaning device for the steel balls for bearing machining according to claim 4, characterized in that: the gear ratio between the transmission gear (15) and the rack (14) is 1: 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011589452.XA CN112676137B (en) | 2020-12-28 | 2020-12-28 | Steel ball screening and cleaning device for bearing machining |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011589452.XA CN112676137B (en) | 2020-12-28 | 2020-12-28 | Steel ball screening and cleaning device for bearing machining |
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| CN112676137A true CN112676137A (en) | 2021-04-20 |
| CN112676137B CN112676137B (en) | 2022-05-06 |
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| CN112676137B (en) | 2022-05-06 |
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Effective date of registration: 20220414 Address after: 318000 No.2, beiyangjiu Road, Linhai Park, Taizhou chemical API base, Zhejiang Province Applicant after: DELMAR BEARING CO.,LTD. Address before: No. 307, jingmenshan Avenue, Honghuatao Town, Yidu City, Yichang City, Hubei Province 443300 Applicant before: Yidu Honghua yemingzhu Bearing Manufacturing Co.,Ltd. |
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