CN104696380A - Long-life lardan university joint - Google Patents
Long-life lardan university joint Download PDFInfo
- Publication number
- CN104696380A CN104696380A CN201310640727.1A CN201310640727A CN104696380A CN 104696380 A CN104696380 A CN 104696380A CN 201310640727 A CN201310640727 A CN 201310640727A CN 104696380 A CN104696380 A CN 104696380A
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- China
- Prior art keywords
- ring
- seal ring
- shoulder
- hooke
- annular
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- 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.)
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Classifications
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- 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
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
- F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
- F16D3/382—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another constructional details of other than the intermediate member
- F16D3/385—Bearing cup; Bearing construction; Bearing seal; Mounting of bearing on the intermediate member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a long-life lardan university joint. The long-life lardan university joint comprises a cross shaft body and a shaft arm, wherein the shaft arm is coated with a needle bearing; the needle bearing comprises a bearing sleeve and a rolling needle; the cross shaft body and the shaft arm are formed to an integrated structure; the shaft arm comprises a shaft neck and a table shoulder; the shaft neck is connected with the cross shaft body through the table shoulder; the outer side surface of the shaft neck is a conical surface; the diameter of the root of the shaft neck is greater than the diameter of the outer end of the shaft neck; a sealing ring is arranged at the inner side of the opening end of the needle bearing; the inner side of the sealing ring is bonded and contacted with the surface of the table shoulder; and a dustproof ring is arranged at the opening end of the needle bearing. The long-life lardan university joint has the beneficial effects of good sealing performance and long service life.
Description
Technical field
The present invention relates to universal joint technical field, particularly relate to a kind of Hooke's joint of long service life.
Background technique
Universal joint; Refer to devices such as utilizing ball-type to realize the axle Power output of different direction, be on automobile one very vitals, universal joint and transmission shaft combine, and are called card gear.Common universal joint generally comprises cross axle, the needle bearing be enclosed within trunnion journal, and the outer end of needle bearing is closed, interior end opening, and opening is provided with seal ring.Hooke's joint needs transferring power in the course of the work, in power transmission process universal joint due to angular velocity to affect movement under force complicated, existing radial forces, there is responsive to axial force again, its maximum active force is that cross axle produces quiet warping force, on usual in use Hooke's joint, axle journal contacts with bearing Inner fourth contact, cross axis faces contacts with bearing bottom surface, the load be subject in movement process is uneven, thus cause universal joint serious wear and lost efficacy, working life is shorter.
Chinese patent Authorization Notice No.: CN201606420U, authorized announcement date on October 13rd, 2010, disclose a kind of Hooke's joint, comprise cross axle, needle roller, cup, the spindle nose of cross axle is arranged in described cup by described needle roller, is provided with packing ring between the end face of cross axle spindle nose and the inner bottom surface of described cup.By arranging packing ring, the end face of cross axle spindle nose can be avoided directly to contact with the inner bottom surface of cup, packing ring can not produce the high temperature that lubricant oil is vaporized, can reduce or prevent cross axle spindle nose end face from wearing and tearing or fracture occurring when high-speed motion, extend working life of Hooke's joint, and packing ring be have necessarily flexible, assembly error can be made up, increase equalizing and buffering performance, make universal joint stable movement, improve transmission capacity.Its deficiency is that the load be subject between the collar end of this kind of Hooke's joint and root is uneven, thus cause collar end, root easily weares and teares, reduce working life, especially heavy universal joint, this kind of wearing and tearing are more obvious.
Summary of the invention
The present invention is uneven and cause serious wear in order to the collar end and root overcoming Hooke's joint of the prior art is subject to load, have a strong impact on the deficiency in universal joint working life, provide one and can keep collar end and root uniform load, the Hooke's joint of long service life.
To achieve these goals, the present invention adopts following technological scheme:
A kind of Hooke's joint, comprise cross axle body and armshaft, the needle bearing that armshaft is arranged with, needle bearing comprises bearing housing and needle roller, cross axle body and armshaft are integral type structure, it is characterized in that, described armshaft comprises axle journal and shoulder, axle journal is connected with cross axle body by shoulder, the outer side surface of described axle journal is the conical surface, and the diameter of axle journal root is greater than the diameter of journal outer end, is provided with seal ring inside the opening end of described needle bearing, fit with shoulder surface and contact in the inner side of seal ring, the opening end end of needle bearing is provided with dust ring.The stress that shoulder can reduce axle journal and cross axle body joint is concentrated, and axle journal is outside is the conical surface, can alleviate the load between collar end and root, make load be tending towards even, prevent concentrated wear, improve working life, seal ring plays seal action, prevents internal grease from leaking; Dust ring plays dustproof effect, prevents extraneous dust from entering in needle bearing, improves whole service life.
As preferably, the one-sided tapering of described axle journal is 1 '-30 ', tapering reduces from the root of axle journal gradually to end.Axle journal tapering is very little, the normal work of needle bearing can not be affected, simultaneously tapering is along with the different and corresponding change of axle journal different parts load, effectively regulates load, makes collar end and root load more even and don't affect the work of needle bearing.
As preferably, needle roller is single needle roller or double needle roller, and the end, two ends of described needle roller is round table-like, the one-sided tapering at needle roller two ends is 10 '-60 '.During universal joint work, needle bearing is subject to the active force of extraneous multiple directions, the axis of bearing housing and the axis of axle journal can produce a minimum angle deviation under external force, thus return cause needle roller end to be directly pressed in respectively on bearing housing inside, axle journal outer side wall, easily cause concentrated wear, and needle bearing two ends are round table-like, and end is provided with rounded corner, then automatically can regulate according to the angle of the axis of the axis of bearing housing and axle journal, thus prevent concentrated wear, improve working life.
As preferably, described shoulder is two grades or many grades, and the diameter of shoulder reduces from cross axle body end gradually to axle journal end; The radial cross section of the side of described shoulder is the arcuate structure of indent.Multiple shoulder has the effect preventing stress mutation, and the stress cutting down joint is concentrated, and STRESS VARIATION can also be made more even, and improve working life, shoulder coordinates with seal ring, dust ring simultaneously, and sealing effect is better.
As preferably, the bottom surface of described needle bearing is provided with packing ring, and one end of packing ring contacts with needle bearing bottom surface, the other end of packing ring and the end contact of axle journal, and the contact jaw surface uniform of packing ring and axle journal is provided with some sphere pits.Packing ring can prevent journal outer end and the contact friction of bearing housing bottom surface, and needle bearing inside is full of lubricant oil, and lubricant oil can enter in sphere pit, thus ensures that packing ring and collar end are in lubricating status all the time, reduces wearing and tearing and resistance.
As preferably, described seal ring comprises seal ring skeleton and seal ring, seal ring is connected with seal ring skeleton, restraining groove in annular is provided with inside the opening end of described bearing housing, the outer end of described seal ring skeleton snaps in the interior restraining groove of annular, elastic support circle is provided with, the outer side surface of described seal ring and bearing housing inwall gluing, sealing, the inner side surface of seal ring and shoulder gluing, sealing between the interior edge face of seal ring and needle roller exterior edge face.Seal ring keeps balance under the common active force of seal ring skeleton, elastic support circle, shoulder three, in these three external force, wear and tear along with rotating inside shoulder place and seal ring, inside seal ring can automatically and shoulder compress, thus reaching new balance, seal ring is in transient equiliblium all the time, has automatic compensation function, at every moment can keep the excellent sealing at seal ring and shoulder place, long service life.
As preferably, the inner side surface of described seal ring is provided with three lips, is respectively main lip, the first secondary lip, the second secondary lip from inside to outside, described main lip and shoulder outer side surface gluing, sealing; The exterior edge face of described seal ring is provided with annular breach, is provided with annular spring in described annular breach.The main lip of universal joint and shoulder press seal, along with Long-Time Service wearing and tearing, after main lip wearing and tearing, first secondary lip and shoulder gluing, sealing, after continuing wearing and tearing, second secondary lip again with shoulder gluing, sealing, therefore only have when three lips all lost efficacy, seal ring just can lose efficacy, before three lips all lost efficacy, seal ring can remain good sealability, annular spring is that seal ring plays the active force of a circumference to center, lip is made to compress shoulder further, especially when main lip lost efficacy, the first secondary lip can be kept to compress shoulder by the active force of annular spring.
As preferably, dust ring comprises dust ring skeleton and dirt-proof boot, described dust ring skeleton, the cross section of dirt-proof boot is all C character form structure, dust ring skeleton is buckled in outside dirt-proof boot, the outer restraining groove of annular is provided with outside the opening end of described bearing housing, the end, C shape outer ring of dirt-proof boot is provided with annular lip, middle ring is provided with inside the C shape inner ring of dirt-proof boot, inner ring is provided with outside the C shape inner ring of dirt-proof boot, the C shape opening end of described dirt-proof boot is enclosed within bearing housing end, annular lip snaps in the outer restraining groove of annular, middle ring contacts with bearing housing inner side surface and seals, inner ring and shoulder place interference fit.Dust ring skeleton is that dust ring provides good support performance, even if dust ring is collided also not easily along bad, annular lip, middle ring, inner ring all play the effect of location, sealing, prevent extraneous dust from entering needle roller axle bush inner, good dustproof effect.
Therefore, the present invention has following beneficial effect: the end of (1) axle journal and root are subject to extraneous load and are tending towards even, reduces concentrated wear, improves working life; (2) in needle bearing, needle roller can adapt to the misalignment of axe between bearing housing and axle journal automatically, prevents concentrated wear, improves working life; (3) stress that many grades of shoulders can reduce joint is concentrated, and makes transition of stress even simultaneously, improves working life; (4) seal ring is along with wearing and tearing energy automatic compensation sealing, can remain good sealability, and kept needle bearing inner sealing, stable working environment, greatly improve the working life of universal joint before seal ring lip all loses efficacy.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the structural representation of universal joint body in the present invention.
Fig. 3 is the structural representation of needle bearing in the present invention.
Fig. 4 is A place partial enlargement structural representation in Fig. 1.
Fig. 5 is the sectional view of seal ring in the present invention.
In figure: ring 54 inner ring 55 packing ring 6 elastic support circle 7 annular spring 8 in the restraining groove 33 outer restraining groove 34 seal ring 4 seal ring skeleton 41 seal ring 42 main lip 43 first secondary lip 45 of secondary lip 44 second of annular annular breach 46 dust ring 5 dust ring skeleton 51 dirt-proof boot 52 annular lip 53 in cross axle body 1 armshaft 2 axle journal 21 shoulder 22 needle bearing 3 bearing housing 31 needle roller 32 annular.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
A kind of long lifetime Hooke's joint as shown in Figure 1, comprise cross axle body 1 and armshaft (2), the needle bearing 3 that armshaft is arranged with, needle bearing comprises bearing housing 31 and needle roller 32, cross axle body and armshaft are integral type structure, armshaft 2 comprises axle journal 21 and shoulder 22, axle journal is connected with cross axle body by shoulder, the outer side surface of axle journal 21 is the conical surface, the diameter of axle journal root is greater than the diameter of journal outer end, the one-sided tapering of axle journal 21 is 1 '-30 ', tapering reduces from the root of axle journal gradually to end, in the present embodiment, axle journal root is 26.9mm to tip lengths, take collar end as reference level, the one-sided tapering of the axle journal at distance reference level 28.4mm place is 2.55 ', the one-sided tapering of axle journal at distance reference level 1.5mm place is 1.28 ', namely at distance reference level 1.5mm-28.4mm place, the one-sided tapering of axle journal is reduced to 1.28 ' gradually from 2.55 ', such universal joint operationally, the load that collar end and root are subject to is tending towards even, prevent concentrated wear, greatly improve the working life of universal joint, be provided with seal ring 4 inside the opening end of needle bearing 3, fit with shoulder surface and contact in the inner side of seal ring, the opening end end of needle bearing 3 is provided with dust ring 5, needle roller 32 is double needle roller, the end, two ends of needle roller is round table-like, the one-sided tapering at needle roller two ends is 10 '-60 ', in the present embodiment, the one-sided tapering of needle roller is 20 ', during universal joint work, needle bearing is subject to the active force of extraneous multiple directions, the axis of bearing housing and the axis of axle journal can produce a minimum angle deviation under external force, thus return cause needle roller end to be directly pressed in bearing housing inside respectively, on axle journal outer side wall, easily cause concentrated wear, and needle bearing two ends are round table-like, and end is provided with rounded corner, then automatically can regulate according to the angle of the axis of the axis of bearing housing and axle journal, thus prevent concentrated wear, improve working life.
As shown in Figure 2, shoulder 22 has two grades, the diameter of shoulder 22 reduces from cross axle body end gradually to axle journal end, the radial cross section of the side of shoulder 22 is the arcuate structure of indent, and multiple shoulder has the effect preventing stress mutation, and the stress cutting down joint is concentrated, STRESS VARIATION can also be made more even, improve working life, shoulder coordinates with seal ring, dust ring simultaneously, and sealing effect is better.
As shown in Figure 3, the bottom surface of needle bearing 3 is provided with packing ring 6, one end of packing ring contacts with needle bearing bottom surface, the other end of packing ring and the end contact of axle journal, packing ring 6 is provided with some sphere pits with the contact jaw surface uniform of axle journal 21, and packing ring can prevent journal outer end and the contact friction of bearing housing bottom surface, needle bearing inside is full of lubricant oil, lubricant oil can enter in sphere pit, thus ensures that packing ring and collar end are in lubricating status all the time, reduces wearing and tearing and resistance; Be provided with restraining groove 33 in annular inside the opening end of bearing housing, in annular, restraining groove is used for seal ring location, is provided with the outer restraining groove 34 of annular outside the opening end of bearing housing 32, and the outer restraining groove of annular is used for the location of dust ring.
As shown in Figure 4, seal ring 4 comprises seal ring skeleton 41 and seal ring 42, seal ring is connected with seal ring skeleton, the outer end of seal ring skeleton 41 snaps in the interior restraining groove 33 of annular, elastic support circle 7 is provided with between the interior edge face of seal ring 42 and needle roller exterior edge face, elastic support circle can prevent needle roller from moving axially, the outer side surface of seal ring and bearing housing inwall gluing, sealing, as shown in Figure 5, the inner side surface of seal ring 42 is provided with three lips, be respectively main lip 43 from inside to outside, first secondary lip 44, second secondary lip 45, main lip and shoulder outer side surface gluing, sealing, the exterior edge face of seal ring 42 is provided with annular breach 46, annular spring 8 is provided with in annular breach, seal ring is at seal ring skeleton, elastic support circle, balance is kept under the common active force of shoulder three, in these three external force, wear and tear along with rotating inside shoulder place and seal ring, inside seal ring can automatically and shoulder compress, thus reach new balance, seal ring is in transient equiliblium all the time, there is automatic wear compensation function, at every moment can keep the excellent sealing at seal ring and shoulder place, long service life, annular spring produce pretightening force can keep lip and axle journal close contact, and compensation lip loss at any time.
As shown in Figure 4, dust ring 5 comprises dust ring skeleton 51 and dirt-proof boot 52, dust ring skeleton, the cross section of dirt-proof boot is all C character form structure, dust ring skeleton is buckled in outside dirt-proof boot, the outer restraining groove 34 of annular is provided with outside the opening end of bearing housing 32, the end, C shape outer ring of dirt-proof boot is provided with annular lip 53, middle ring 54 is provided with inside the C shape inner ring of dirt-proof boot, inner ring 55 is provided with outside the C shape inner ring of dirt-proof boot, the C shape opening end of dirt-proof boot is enclosed within bearing housing end, annular lip 53 snaps in the outer restraining groove 34 of annular, middle ring contacts with bearing housing inner side surface and seals, inner ring and shoulder place interference fit.Dust ring skeleton is that dust ring provides good support performance, even if dust ring is collided also not easily along bad, annular lip, middle ring, inner ring all play the effect of location, sealing, prevent extraneous dust from entering needle roller axle bush inner, good dustproof effect.
During universal joint cross work, axle journal root and end load are tending towards even, not easy to wear, needle roller has automatic regulation function for the axial drift angle of the stressed generation of bearing housing, prevents concentrated wear, and seal ring has automatic wear compensation function, ensure good sealability, therefore, the present invention has long service life, the beneficial effect that sealing energy performance is good.
Claims (10)
1. a long lifetime Hooke's joint, comprise cross axle body (1) and armshaft (2), the needle bearing (3) that armshaft is arranged with, needle bearing comprises bearing housing (31) and needle roller (32), cross axle body and armshaft are integral type structure, it is characterized in that, described armshaft (2) comprises axle journal (21) and shoulder (22), axle journal is connected with cross axle body by shoulder, the outer side surface of described axle journal (21) is the conical surface, the diameter of axle journal root is greater than the diameter of journal outer end, seal ring (4) is provided with inside the opening end of described needle bearing (3), fit with shoulder surface and contact in the inner side of seal ring, the opening end end of needle bearing (3) is provided with dust ring (5).
2. a kind of long lifetime Hooke's joint according to claim 1, is characterized in that, described axle journal (21) one-sided tapering is 1 '-30 ' and, tapering reduces from the root of axle journal gradually to end.
3. a kind of long lifetime Hooke's joint according to claim 1 and 2, it is characterized in that, needle roller (32) is single needle roller or double needle roller, and the end, two ends of described needle roller is round table-like, the one-sided tapering at needle roller two ends is 10 '-60 '.
4. a kind of long lifetime Hooke's joint according to claim 1, it is characterized in that, described shoulder (22) is two grades or many grades, and the diameter of shoulder (22) reduces from cross axle body end gradually to axle journal end.
5. a kind of long lifetime Hooke's joint according to claim 1 or 4, is characterized in that, the radial cross section of the side of described shoulder (22) is the arcuate structure of indent.
6. a kind of long lifetime Hooke's joint according to claim 1, it is characterized in that, the bottom surface of described needle bearing (3) is provided with packing ring (6), one end of packing ring contacts with needle bearing bottom surface, the other end of packing ring and the end contact of axle journal, packing ring (6) is provided with some sphere pits with the contact jaw surface uniform of axle journal (21).
7. a kind of long lifetime Hooke's joint according to claim 1, it is characterized in that, described seal ring (4) comprises seal ring skeleton (41) and seal ring (42), seal ring is connected with seal ring skeleton, restraining groove (33) in annular is provided with inside the opening end of described bearing housing (32), the outer end of described seal ring skeleton (41) snaps in the interior restraining groove (33) of annular, elastic support circle (7) is provided with between the interior edge face of seal ring (42) and needle roller exterior edge face, the outer side surface of described seal ring and bearing housing inwall gluing, sealing, the inner side surface of seal ring and shoulder gluing, sealing.
8. a kind of long lifetime Hooke's joint according to claim 7, it is characterized in that, the inner side surface of described seal ring (42) is provided with three lips, be respectively main lip (43), the first secondary lip (44), the second secondary lip (45), described main lip and shoulder outer side surface gluing, sealing from inside to outside.
9. a kind of long lifetime Hooke's joint according to claim 7 or 8, is characterized in that, the exterior edge face of described seal ring (42) is provided with annular breach (46), is provided with annular spring (8) in described annular breach.
10. a kind of long lifetime Hooke's joint according to claim 1 or 7, it is characterized in that, dust ring (5) comprises dust ring skeleton (51) and dirt-proof boot (52), described dust ring skeleton, the cross section of dirt-proof boot is all C character form structure, dust ring skeleton is buckled in outside dirt-proof boot, the outer restraining groove of annular (34) is provided with outside the opening end of described bearing housing (32), the end, C shape outer ring of dirt-proof boot is provided with annular lip (53), middle ring (54) is provided with inside the C shape inner ring of dirt-proof boot, inner ring (55) is provided with outside the C shape inner ring of dirt-proof boot, the C shape opening end of described dirt-proof boot is enclosed within bearing housing end, annular lip (53) snaps in the outer restraining groove of annular (34), middle ring contacts with bearing housing inner side surface and seals, inner ring and shoulder place interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310640727.1A CN104696380A (en) | 2013-12-04 | 2013-12-04 | Long-life lardan university joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310640727.1A CN104696380A (en) | 2013-12-04 | 2013-12-04 | Long-life lardan university joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104696380A true CN104696380A (en) | 2015-06-10 |
Family
ID=53343816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310640727.1A Pending CN104696380A (en) | 2013-12-04 | 2013-12-04 | Long-life lardan university joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104696380A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405635A (en) * | 2022-11-03 | 2022-11-29 | 万向钱潮股份公司 | Universal joint |
| CN115681354A (en) * | 2023-01-04 | 2023-02-03 | 浙江钱富万向节有限公司 | Reinforced maintenance-free universal joint |
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| CN201851637U (en) * | 2010-11-27 | 2011-06-01 | 瑞安市车辆配件厂 | Plane gasket |
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| CN202371003U (en) * | 2011-12-16 | 2012-08-08 | 江苏南方轴承股份有限公司 | Drawn cup needle roller bearing |
| CN202579703U (en) * | 2012-04-06 | 2012-12-05 | 万向钱潮股份有限公司 | Universal joint capable of compensating wear of sealing device |
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| CN202707839U (en) * | 2012-06-30 | 2013-01-30 | 杭州德意万向节有限公司 | Dustproof cover universal joint of framework type sealing structure |
| CN203098818U (en) * | 2013-03-21 | 2013-07-31 | 瑞安市车辆配件厂 | Half axle gear gasket |
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| CN201636233U (en) * | 2010-03-25 | 2010-11-17 | 万向钱潮股份有限公司 | Pre-tightening type inside-card fixing universal-joint oil seal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405635A (en) * | 2022-11-03 | 2022-11-29 | 万向钱潮股份公司 | Universal joint |
| CN115405635B (en) * | 2022-11-03 | 2023-01-24 | 万向钱潮股份公司 | Universal joint |
| CN115681354A (en) * | 2023-01-04 | 2023-02-03 | 浙江钱富万向节有限公司 | Reinforced maintenance-free universal joint |
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Application publication date: 20150610 |
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