CN106988373B - Positioning and anti-loosening device for track pin shaft of ultra-large hydraulic excavator - Google Patents
Positioning and anti-loosening device for track pin shaft of ultra-large hydraulic excavator Download PDFInfo
- Publication number
- CN106988373B CN106988373B CN201710325051.5A CN201710325051A CN106988373B CN 106988373 B CN106988373 B CN 106988373B CN 201710325051 A CN201710325051 A CN 201710325051A CN 106988373 B CN106988373 B CN 106988373B
- Authority
- CN
- China
- Prior art keywords
- pin shaft
- drum
- positioning
- shaped sleeve
- ultra
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 239000000314 lubricant Substances 0.000 claims abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 13
- 230000007704 transition Effects 0.000 claims abstract description 11
- 230000001050 lubricating effect Effects 0.000 claims abstract description 6
- 238000003860 storage Methods 0.000 claims abstract description 6
- 125000006850 spacer group Chemical group 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 6
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 description 7
- 241000219098 Parthenocissus Species 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 238000003754 machining Methods 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 4
- 230000009545 invasion Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a positioning and anti-loosening device of a track pin shaft of an ultra-large hydraulic excavator, which comprises a pin shaft for connecting a track plate and a positioning device for positioning the pin shaft, and is characterized in that the positioning device comprises a transition piece, a limiting piece, a fixing piece and a lubricating structure, wherein the head of the fixing piece is positioned in a through hole of the limiting piece and forms a storage structure with the upper end of the limiting piece, the lubricating structure comprises a seal cover with threads, a solid lubricant and a seal ring, the upper end of the limiting piece is provided with threads matched with the seal cover, the lower end of the limiting piece is provided with a groove for placing the seal ring, the solid lubricant is arranged in the storage structure, the upper end of the limiting piece is sealed through the seal cover, and the lower end of the limiting piece is sealed through the seal ring. The advantages are that: the matching surfaces of the limiting piece and the fixing piece are lubricated by using a solid lubricant, so that the limiting piece can flexibly and freely rotate along with the end face of the pin shaft for a long time, and a sealing cover and a sealing ring are used; the positioning anti-loosening device is simple in structure, convenient to assemble and disassemble and high in reliability.
Description
Technical Field
The invention relates to a positioning and anti-loosening device for a track pin shaft of an ultra-large hydraulic excavator, and belongs to the technical field of traveling devices of tracks of heavy engineering machinery.
Background
The walking system of the ultra-large hydraulic excavator generally consists of a crawler belt, a driving wheel, a thrust wheel, a drag chain wheel and a guide wheel. The crawler belt is a core component and is a carrier for converting the driving force of the walking motor into the walking power of the whole machine. The creeper tread of the ultra-large hydraulic excavator is generally of an integral casting type, and is connected by a pin shaft penetrating through a pin hole, so that the creeper tread and the pin shaft are stressed greatly during walking, and deform after a long time. Thus, the reliability of the track pin positioning determines to a large extent the reliability of the crawler.
The traditional pin shaft positioning method is mainly characterized in that only customized nuts are installed on a creeper tread near the end part of a pin shaft, or bosses with specific shapes are reserved on the creeper tread and machined, the casting process difficulty is high, the machining cost is high, the pin shaft can circumferentially rotate and axially float in the working process, the end part touches a positioning nut, the end part of the pin shaft and the positioning nut are seriously abraded, the abrasion problem after long-term use is more serious, the anti-loosening effect is poor, and the risk of falling of the pin shaft and incapability of the whole machine is higher; in addition, the positioning device is mostly disposable, and when the connected crawler belt needs to be disconnected, the positioning device needs to be cut off, which wastes time and labor.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides the positioning and anti-loosening device for the track pin shaft of the ultra-large hydraulic excavator, which has the advantages of compact structure, convenience in assembly and disassembly, long service life, high reliability and self-lubrication.
In order to solve the technical problems, the invention provides a positioning and anti-loosening device of a track pin shaft of an ultra-large hydraulic excavator, which comprises a pin shaft for connecting a track shoe and a positioning device for positioning the pin shaft, and is characterized in that the positioning device is horizontally arranged at the outer side end part of the pin shaft, the positioning device comprises a transition piece, a limiting piece, a fixing piece and a lubricating structure, wherein a gap is arranged between the limiting piece and the end surface of the outer side end part of the pin shaft, the transition piece is provided with a cambered surface matched with the cambered surface of the track shoe for avoiding the arrangement of a complex installation boss and machining on the track shoe, the fixing piece sequentially penetrates through the limiting piece and the through hole of the transition piece for fixing, the head part of the fixing piece is positioned in the through hole of the limiting piece and forms a storage structure with the upper end of the limiting piece, and the lubricating structure comprises a seal cover with threads, a solid lubricant and a seal ring, the locating part upper end is equipped with the screw thread that matches the closing cap, and the lower extreme is opened has the slot of placing the sealing washer, solid lubricant arranges in the storage structure, the upper end of locating part is sealed through the closing cap, the lower extreme passes through the sealing washer sealedly.
Furthermore, the fixing part adopts an inner hexagon screw, the head of the inner hexagon screw is provided with an annular boss so as to improve the pre-tightening effect of the thread pair, the bottom of the boss is provided with an annular groove, and the thread is a fine external thread.
Furthermore, the transition piece adopts a spacer bush with an arc surface, the arc surface is matched with the matching surface of the track shoe, the matching surface of the spacer bush and the inner hexagon screw is a plane, the matching hole of the spacer bush and the inner hexagon screw is a smooth hole, the upper side and the lower side are circular arcs, and the left side and the right side are straight edges.
Furthermore, the limiting part adopts a drum-shaped sleeve to axially limit the pin shaft, the outer surface of the drum-shaped sleeve is a drum-shaped surface, two ends of the drum-shaped sleeve are conical surfaces, the middle of the drum-shaped sleeve is an arc surface, the inner side of the drum-shaped sleeve is provided with two sections of stepped holes, the arc surface is contacted with the end surface of the pin shaft, the rolling friction between the end surface of the pin shaft and the drum-shaped sleeve is realized, a first section of hole at the upper end of the drum-shaped surface is provided with fine thread, and a second section of hole at the lower end of the drum-shaped surface is provided with a groove for placing a sealing ring.
Furthermore, the sealing ring is an O-shaped chloroprene rubber sealing ring.
Furthermore, the sealing cover is in a stepped disc shape and is provided with an inner hexagonal, and the lower cylindrical surface is provided with a fine-tooth external thread matched with the internal thread of the drum-shaped sleeve.
Furthermore, the distance between the drum-shaped outer edge of the drum-shaped sleeve and the end face of the pin shaft is controlled to be 2-3 mm, the drum-shaped sleeve is in small clearance fit with the cylindrical surface of the head of the hexagon socket head screw by means of the first section of hole of the stepped hole, can rotate freely, and is limited by means of a shaft shoulder in the axial direction.
Furthermore, the matching surface of the socket head cap screw and the drum-shaped sleeve and the drum-shaped surface of the drum-shaped sleeve are subjected to induction hardening treatment, so that the wear resistance and the service life of the socket head cap screw are improved.
The invention achieves the following beneficial effects:
compared with the prior art, the spacer bush with the cambered surface is used as the transition piece between the inner hexagon screw and the track plate, so that the complex installation boss on the track plate is avoided, the machining is avoided, and the casting risk is reduced; the drum-shaped sleeve is adopted to axially position the track pin shaft, the friction force between the end surface of the pin shaft and the drum-shaped sleeve exists in a rolling friction mode, abrasion of parts such as the pin shaft is avoided, the matching surface between the drum-shaped sleeve and a fixed inner hexagon screw of the drum-shaped sleeve is lubricated by a solid lubricant, the drum-shaped sleeve can flexibly and freely rotate along with the end surface of the pin shaft for a long time, a sealing cover and a chloroprene rubber O-shaped ring are used for sealing, and leakage of the lubricant and invasion of pollutants are prevented; the complex installation boss is prevented from being arranged on the creeper tread and the machining is avoided, and the casting risk is reduced; the influence on the contact surface of the limiting position caused by the deformation of the track shoe and the pin shaft after long-term use and the like due to manufacturing form and position errors are avoided, the contact surface can bear the axial shifting force of the pin shaft all the time, and the phenomenon that the block falls or the parts lose efficacy due to local stress concentration caused by edge contact or extrusion is avoided. The positioning anti-loosening device is simple in structure, convenient to assemble and disassemble and high in reliability.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a socket head cap screw;
FIG. 3 is a schematic view of a spacer;
FIG. 4 is a schematic view of a drum sleeve;
fig. 5 is a schematic view of the closure.
In the figure: 1. The device comprises a socket head cap screw, 2, a nut, 3, a track shoe, 4, a spacer bush, 5, an O-shaped ring, 6, a drum-shaped sleeve, 7, a sealing cover, 8, a pin shaft, 9, an arc, 10, a straight edge, 11 unthreaded hole, 12, an arc surface, 13, a conical surface, 14, an arc surface, 15, a stepped hole, 16 and a groove.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, the positioning and anti-loosening device for the track pin shaft of the ultra-large hydraulic excavator is characterized by comprising a track shoe 3, a pin shaft 8, a nut 2, an inner hexagon screw 1, a spacer 4, an O-shaped ring 5, a drum-shaped sleeve 6 and a sealing cover 7. The device is positioned at the outer end of a pin shaft 8 and horizontally installed, after two track shoes 3 are spliced, the pin shaft 8 sequentially penetrates through pin holes from outside to inside, an O-shaped ring 5 is installed in a groove of a drum-shaped sleeve 6 in advance, an inner hexagon screw 1 penetrates through the drum-shaped sleeve 6 provided with the O-shaped ring 5 and then penetrates through a spacer 4, the cambered surface of the spacer 4 is adjusted to be matched with the cambered surface of the track shoes 3, a nut 2 is screwed down, a certain amount of solid lubricant is injected into the cavity of the drum-shaped sleeve 6, and the inner cavity of the drum-shaped sleeve 6 is sealed by a sealing cover 7, so that the leakage of the lubricant and the invasion of pollutants are prevented.
Preferably, the head of the socket head cap screw 1 is provided with an annular boss to improve the pre-tightening effect of the thread pair, and the bottom of the boss is provided with an annular groove, and the thread is a fine thread and an external thread.
Preferably, the matching surface of the spacer 4 and the track shoe 3 is an arc surface, the matching surface of the spacer 4 and the socket cap screw 1 is a plane, the matching hole of the socket cap screw 1 is a smooth hole 11, the upper side and the lower side are circular arcs 9, and the left side and the right side are straight edges 10.
Preferably, the material of the O-ring 5 is neoprene.
Preferably, the outer surface of the drum-shaped sleeve 6 is a drum-shaped surface, wherein two ends of the drum-shaped sleeve are conical surfaces 13, the middle of the drum-shaped sleeve is an arc surface 14, the inner side of the drum-shaped sleeve is provided with two sections of stepped holes 15, a first section of holes is provided with fine threads, and a second section of holes is provided with grooves 16 for placing the O-shaped rings 5.
Preferably, the sealing cover 7 is in a stepped disk shape and is provided with an inner hexagonal head, and the lower cylindrical surface is provided with a fine thread external thread matched with the inner thread of the drum-shaped sleeve.
Preferably, the distance between the drum-shaped outer edge of the drum-shaped sleeve 6 and the end face of the pin shaft 8 is controlled to be 2-3 mm, the drum-shaped sleeve 6 is in small clearance fit with the cylindrical surface H9/f8 of the head of the socket head cap screw 1 through a first section of hole of a stepped hole, can freely rotate, and is axially limited through a shaft shoulder.
Preferably, the matching surface between the first section hole of the drum-shaped sleeve 6 and the head part of the socket head cap screw 1 is lubricated by using a solid lubricant, the solid lubricant is arranged in an inner cavity formed by the solid lubricant and the inner cavity, the lower part of the inner cavity is sealed by using an O-shaped ring 5 to prevent the lubricant from leaking, and the upper part of the inner cavity is sealed by using a sealing cover 7 to prevent the invasion of pollutants.
Preferably, the matching surface of the socket head cap screw 1 and the drum-shaped sleeve 6 and the drum-shaped surface of the drum-shaped sleeve 6 are both subjected to induction hardening treatment, so that the wear resistance and the service life of the socket head cap screw are improved.
The thread of the socket head cap screw 1 and the thread pair between the drum-shaped sleeve 6 and the sealing cover 7 are both fine thread pairs, and the anti-loosening effect is good.
The matching surface of the spacer 4 and the track shoe 3 is a cambered surface, so that the connection effectiveness is ensured, the complex installation boss and machining on the track shoe 3 are avoided, and the casting risk is reduced.
The drum-shaped sleeve 6 is used for limiting the end face of the pin shaft 8 by the drum-shaped surface, so that the influence of shape and position errors, deformation of the track shoe 3 after long-term use, bending deformation of the pin shaft 8 and the like on the contact surface of the limiting part can be avoided, a relatively ideal contact surface can always bear the axial float force of the pin shaft 8, and the phenomenon that the block falls or the parts fail due to local stress concentration caused by edge contact or extrusion is avoided. Furthermore, after the crawler traveling device is used for a long time, even if the creeper tread 3 and the pin shaft 8 are greatly deformed, the positioning and anti-loosening device can still be conveniently disassembled, and a crawler system can be conveniently disassembled for repair or replacement.
According to the structure, the spacer bush with the cambered surface is used as the transition piece between the inner hexagon screw and the crawler plate, so that the complex installation boss on the crawler plate is avoided, the machining is avoided, the casting risk is reduced, and the pre-tightening effect of the inner hexagon screw and the nut is improved; the drum-shaped sleeve is adopted to axially position the track pin shaft, the friction force between the end surface of the pin shaft and the drum-shaped sleeve exists in a rolling friction mode, abrasion of parts such as the pin shaft is avoided, the matching surface between the drum-shaped sleeve and a fixed inner hexagon screw of the drum-shaped sleeve is lubricated by a solid lubricant, the drum-shaped sleeve can flexibly and freely rotate along with the end surface of the pin shaft for a long time, a sealing cover and a chloroprene rubber O-shaped ring are used for sealing, and leakage of the lubricant and invasion of pollutants are prevented; the influence of manufacturing shape and position errors, installation errors, deformation of the track shoe and the pin shaft after long-term use and the like on the contact surface of the limiting part can be avoided, the contact surface can bear the axial shifting force of the pin shaft all the time, and the phenomenon that the block falls or the part fails due to local stress concentration caused by edge contact or extrusion is avoided. This location locking device when guaranteeing track running gear reliability, has compromise well and has simplified track plate structure, reduced the casting risk to compact structure, dismantlement convenience, specially adapted ultra-large hydraulic shovel.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A positioning and anti-loosening device for a track pin shaft of an ultra-large hydraulic excavator comprises a pin shaft used for connecting a track plate and a positioning device used for positioning the pin shaft, and is characterized in that the positioning device is horizontally arranged at the outer side end of the pin shaft and comprises a transition piece, a limiting piece, a fixing piece and a lubricating structure, wherein a gap is formed between the limiting piece and the end face of the outer side end of the pin shaft, the transition piece is provided with a cambered surface matched with the cambered surface of the track plate, the fixing piece sequentially penetrates through the limiting piece and a through hole of the transition piece to be fixed, the head of the fixing piece is positioned in the through hole of the limiting piece and forms a storage structure with the upper end of the limiting piece, the lubricating structure comprises a seal cover with threads, a solid lubricant and a seal ring, the upper end of the limiting piece is provided with threads matched with the seal cover, the lower end of the fixing piece is provided with a groove for placing the seal ring, and the solid lubricant is arranged in the storage structure, the upper end of the limiting part is sealed through a sealing cover, and the lower end of the limiting part is sealed through a sealing ring.
2. The positioning and anti-loosening device for the track pin shaft of the ultra-large hydraulic excavator as claimed in claim 1, wherein the fixing part is an inner hexagon screw, the head part of the inner hexagon screw is provided with an annular boss to improve the pre-tightening effect of the thread pair, the bottom of the boss is provided with an annular groove, and the thread is a fine thread and an external thread.
3. The positioning and anti-loosening device for the track pin shaft of the ultra-large hydraulic excavator as claimed in claim 2, wherein the transition piece is a spacer bush with a cambered surface, the cambered surface is matched with the matching surface of the track shoe, the matching surface of the spacer bush and the inner hexagon screw is a plane, the matching hole of the spacer bush and the inner hexagon screw is a smooth hole, the upper side and the lower side are circular arcs, and the left side and the right side are straight edges.
4. The positioning and anti-loosening device for the track pin shaft of the ultra-large hydraulic excavator as claimed in claim 2, wherein the limiting member axially limits the pin shaft by using a drum-shaped sleeve, the outer surface of the drum-shaped sleeve is a drum-shaped surface, two ends of the drum-shaped sleeve are conical surfaces, the middle of the drum-shaped sleeve is an arc surface, the inner side of the drum-shaped sleeve is provided with two sections of stepped holes, the arc surface is in contact with the end surface of the pin shaft to realize rolling friction between the end surface of the pin shaft and the drum-shaped sleeve, a first section of hole at the upper end of the drum-shaped surface is provided with fine thread, and a second section of hole at the lower end of the drum-shaped sleeve is provided with a groove for placing the sealing ring.
5. The positioning and anti-loosening device for the track pin shaft of the ultra-large hydraulic excavator as claimed in claim 1, wherein the sealing ring is an O-shaped neoprene sealing ring.
6. The positioning and anti-loosening device for the track pin shaft of the ultra-large hydraulic excavator as claimed in claim 2 or 4, wherein the sealing cover is in a stepped disc shape and is provided with an inner hexagonal, and the lower cylindrical surface is provided with a fine external thread matched with the internal thread of the drum-shaped sleeve.
7. The positioning and anti-loosening device for the track pin shaft of the ultra-large hydraulic excavator is characterized in that the distance between the drum-shaped outer edge of the drum-shaped sleeve and the end face of the pin shaft is controlled to be 2-3 mm, the drum-shaped sleeve is in small clearance fit with the cylindrical surface of the head of the hexagon socket head screw by means of the first section of the stepped hole, can freely rotate and is axially limited by means of a shaft shoulder.
8. The positioning and anti-loosening device for the track pin shaft of the ultra-large hydraulic excavator as claimed in claim 4, wherein the matching surface of the socket head cap screw and the drum-shaped sleeve and the drum-shaped surface of the drum-shaped sleeve are subjected to induction hardening treatment so as to improve the wear resistance and prolong the service life of the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710325051.5A CN106988373B (en) | 2017-05-10 | 2017-05-10 | Positioning and anti-loosening device for track pin shaft of ultra-large hydraulic excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710325051.5A CN106988373B (en) | 2017-05-10 | 2017-05-10 | Positioning and anti-loosening device for track pin shaft of ultra-large hydraulic excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106988373A CN106988373A (en) | 2017-07-28 |
| CN106988373B true CN106988373B (en) | 2022-08-23 |
Family
ID=59417772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710325051.5A Active CN106988373B (en) | 2017-05-10 | 2017-05-10 | Positioning and anti-loosening device for track pin shaft of ultra-large hydraulic excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106988373B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4182578A (en) * | 1978-03-24 | 1980-01-08 | Caterpillar Tractor Co. | Keeper assembly |
| CN101544248A (en) * | 2008-03-21 | 2009-09-30 | 董明国 | Hydraulic seal lubrication type caterpillar and connection method thereof |
| CN102381626A (en) * | 2011-11-04 | 2012-03-21 | 徐工集团工程机械股份有限公司 | Pin moving device, movable connecting structure and suspension hook structure |
| CN202326604U (en) * | 2011-11-21 | 2012-07-11 | 中联重科股份有限公司 | Pin shaft fixing device |
| CN206049843U (en) * | 2016-08-31 | 2017-03-29 | 徐州徐工矿山机械有限公司 | Ultra-large type engineering machinery crawler belt bearing pin positioning and locking structure |
| CN207130807U (en) * | 2017-05-10 | 2018-03-23 | 徐州徐工挖掘机械有限公司 | A kind of positioning and locking device of ultra-large type hydraulic crawler excavator crawler belt bearing pin |
-
2017
- 2017-05-10 CN CN201710325051.5A patent/CN106988373B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4182578A (en) * | 1978-03-24 | 1980-01-08 | Caterpillar Tractor Co. | Keeper assembly |
| CN101544248A (en) * | 2008-03-21 | 2009-09-30 | 董明国 | Hydraulic seal lubrication type caterpillar and connection method thereof |
| CN102381626A (en) * | 2011-11-04 | 2012-03-21 | 徐工集团工程机械股份有限公司 | Pin moving device, movable connecting structure and suspension hook structure |
| CN202326604U (en) * | 2011-11-21 | 2012-07-11 | 中联重科股份有限公司 | Pin shaft fixing device |
| CN206049843U (en) * | 2016-08-31 | 2017-03-29 | 徐州徐工矿山机械有限公司 | Ultra-large type engineering machinery crawler belt bearing pin positioning and locking structure |
| CN207130807U (en) * | 2017-05-10 | 2018-03-23 | 徐州徐工挖掘机械有限公司 | A kind of positioning and locking device of ultra-large type hydraulic crawler excavator crawler belt bearing pin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106988373A (en) | 2017-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108543578B (en) | Dustproof Raymond mill grinding roller device | |
| CN105626703A (en) | Engineering machine, mineral engineering machine, bearing block and cleaning method for oil chamber of bearing block | |
| CN105909682A (en) | Crank pin assembly for oil pumping unit in oil field | |
| CN106988373B (en) | Positioning and anti-loosening device for track pin shaft of ultra-large hydraulic excavator | |
| CN205776461U (en) | The abrasion-proof mechanism in excavator turntable hinge hole | |
| CN105697619A (en) | Piston assembly in electric braking actuator | |
| CN203926773U (en) | One can auto-compensation associated sealing arrangement for bearings | |
| WO2024124962A1 (en) | Track roller, side cover, roller body, sealing, fine adjustment and refueling devices of track roller, and mounting and removal tool and method for track roller | |
| CN106931017B (en) | Positioning and anti-loosening device for heavy engineering machinery crawler pin shaft | |
| CN204610558U (en) | A kind of two flange linear bearing assembly | |
| CN219221083U (en) | Novel coupler capable of being replaced quickly and realizing angular compensation | |
| CN208441845U (en) | A kind of sliding bearing formula shield machine roller cutter | |
| CN106969019B (en) | Positioning device for track pin shaft of ultra-large excavator | |
| CN103075519B (en) | Shaft end sealing device for output shaft of walking motor of crawler excavator | |
| CN210212564U (en) | Wear-resisting thrust wheel | |
| CN106969020B (en) | Positioning device for heavy engineering machinery crawler belt pin shaft | |
| CN203473043U (en) | Supporting wheel | |
| CN207130807U (en) | A kind of positioning and locking device of ultra-large type hydraulic crawler excavator crawler belt bearing pin | |
| CN206738343U (en) | A kind of positioning and locking device of heavy engineering machinery crawler belt bearing pin | |
| CN204900515U (en) | Wear -resisting rust -resistant structure of portal frame articulated shaft | |
| CN221164672U (en) | Mining scraper conveyor chain wheel assembly with lubricating device | |
| KR200340099Y1 (en) | Track roller assembly | |
| CN219806899U (en) | Wheel body end cover assembly with high-wear-resistance end face | |
| CN219605714U (en) | Bushing for oil cylinder assembly | |
| CN219034661U (en) | Top drive flushing pipe device of mechanical seal |
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 |
Effective date of registration: 20190410 Address after: 221005 39 Gaoxin Road, Xuzhou Economic Development Zone, Jiangsu Applicant after: XUZHOU XCMG MINING MACHINERY Co.,Ltd. Address before: No. 39 Gaoxin Road, Xuzhou Economic and Technological Development Zone, Jiangsu Province, 221100 Applicant before: XCMG EXCAVATOR MACHINERY Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |