CN202418425U - Sealing refueling-free chain - Google Patents
Sealing refueling-free chain Download PDFInfo
- Publication number
- CN202418425U CN202418425U CN2011205560783U CN201120556078U CN202418425U CN 202418425 U CN202418425 U CN 202418425U CN 2011205560783 U CN2011205560783 U CN 2011205560783U CN 201120556078 U CN201120556078 U CN 201120556078U CN 202418425 U CN202418425 U CN 202418425U
- Authority
- CN
- China
- Prior art keywords
- refuel
- sleeve
- bowl
- sealing
- chain
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a sealing refueling-free chain which is formed by alternate connection of inner chain links and outer chain links, wherein each of the outer chain links is composed of a pair of outer chain plates which are connected by two pin rolls, each of the inner chain links is composed of a pair of inner chain plates which are connected by sleeves which are sleeved on the pin rolls, sleeve refueling-free bushings are sleeved on the pin rolls and are arranged between the pin rolls and the sleeves, and sealing parts which conduct sealing between end faces of the sleeves and the pin rolls are sleeved at two ends of the pin rolls. The technical scheme includes that the sleeve refueling-free bushings are additionally arranged inside the sleeves, and high-quality grease is filled inside the sleeves, so that lubricating oil can be automatically provided for sliding contact surfaces of the sleeves and the pin rolls to reduce friction during operation of the sealing refueling-free chain. Hinged positions between the pin rolls and the sleeves are sealed to prevent outer foreign matters from entering, the grease is also filled in the sealing parts, and the grease overflows from the hinged positions during inhibition operation, so that adequate and long-lasting lubrication at the hinged positions is guaranteed.
Description
Technical field
The utility model belongs to field of chains; Relate in particular to and be used for special equipment staircase and general conveying mechanism; Can preserve the grease of lining and bearing pin contact position and need not extra oiling or grease, and the sealing that can be used for outdoor and many dust atmospheres exempts to refuel chain.
Background technique
Chaindriven lubricated most important, the lubricated wearing and tearing that can alleviate chain hinge place greatly of rational appropriateness increase the service life, and lubricant grease and ability enhanced cooling are slowed down mesh impact fully, reduce the transmission noise.The chain that is used for outdoor and many dust atmospheres, the as easy as rolling off a log destruction of the oil film at hinge place.And too much lubricating is very easy to be infected with dust and dust, even participates in the connection and the engagement at chain hinge place, aggravation chain wear, and befouling environment.
In the past, chain was was alternately connected and composed by interior outer link as conveying equipment.Outer link connects a pair of outer plate by two bearing pins and constitutes; Inner link connects a pair of inner plate simultaneously by the sleeve that connects two bearing pins and constitutes.Adopt the above-mentioned chain of the powder metallurgy sleeve of impregnated mistake as sleeve; The lubricant oil of powder metallurgy sleeve oozes out during operation; Sleeve is contacted with pin slide and need not extra oiling exempt from refuel chain and extensively adopt, like food industry automatic line, high-grade bicycle racing, safeguard the highi degree of accuracy gearing less.But above-mentionedly exempt to refuel chain and be applicable to and do not have in the dust atmosphere that when being used for outdoor and many dust atmospheres, the self-lubricating effect of hinged place is less even disappear the dust aggravation sleeve of entering and the wearing and tearing of bearing pin indoor.
Summary of the invention
In order to solve above-mentioned technical problem, the purpose of the utility model provides a kind of sealing and exempts to refuel chain, can be used for staircase special equipment and general conveying mechanism; And can be used for outdoor and many dust atmospheres, can realize selflubricating between bearing pin and the sleeve, reach and exempt to refuel effect; The sleeve end face sealing prevents that outside dust from getting into, the protection selflubricating and the effect of exempting to refuel; Thereby obtain under abominable operating conditions, to have good wear resistance, increase the service life.
In order to reach above-mentioned purpose, the technological scheme below the utility model has adopted:
A kind of sealing exempts to refuel chain; Alternately connect and compose by inside and outside chain link; Outer link connects a pair of outer plate by two bearing pins and constitutes, and inner link connects a pair of inner plate and constitutes by being set in sleeve on the bearing pin, is arranged with sleeve on the said bearing pin and exempts to refuel lining; This sleeve exempts to refuel lining between bearing pin and sleeve, and said bearing pin two ends are arranged with implementing the Sealing of sealing between sleeve end face and the bearing pin.Exempt to refuel lining owing in sleeve, increase sleeve, be full of the high-quality grease in the lining, therefore when sealing exempts to refuel chain work, can offer lining and pin slide surface of contact lubricant oil well automatically, reduce friction.The hinged place of sealing bearing pin and sleeve stops the entering of foreign, in Sealing, is full of grease equally, and the hinged place grease overflows in the inhibition running, guarantees that the hinged place is fully with long-acting lubricated.
As preferably, said sleeve exempts to refuel lining to be had the tin bronze thin plate of oil storage hole to roll by surface Machining to form.Tin bronze itself has wear resistance and corrosion resistance preferably.The surface Machining oil storage hole guarantees that bearing pin and sleeve exempt to refuel lining good lubrication when relatively rotating, and reduces and weares and teares.
Also preferred, said sleeve exempts to refuel lining for exempting to refuel sliding bearing.The sliding bearing of exempting to refuel claims selflubricating non-maintaining bearing again; The most frequently used sliding bearing adopts wear-resisting macromolecule polymeric material (PTFE)-bronze-steel plate three-layer composite self-lubricating thin plate to roll and form, the oil storage hole that the macromolecule polymeric material surface Machining is uniform sequential at present.3-layer composite material has selflubricating and exempts from the oiling effect, and the oil storage hole on surface adds the high-quality grease when initial, guarantees that bearing pin and sleeve exempt to refuel lining good lubrication when relatively rotating, and reduces and weares and teares, and reach and exempt to refuel effect.
For the preferred following two kinds of schemes of sealing configuration: the one,, said Sealing is a seal bowl, and the rim of a bowl portion of seal bowl is towards inner plate, and inner plate is provided with the inner plate circular groove that is used to be embedded seal bowl the rim of a bowl portion, the bowl bottom of seal bowl and bearing pin drive fit; Be again, said Sealing is a seal bowl, the rim of a bowl portion outward carrier bar of seal bowl, and outer plate is provided with the outer plate circular groove that is used to be embedded seal bowl the rim of a bowl portion, and the bowl bottom of seal bowl is set on the sleeve and drive fit with it.That seal bowl adopts is wear-resisting, macromolecule polymeric material (PTFE) is injection molded preferably for elasticity and hardness, shape such as bowl-shape.The bottom of seal bowl is connected with the rim of a bowl portion is circular-arc; Guaranteed the elasticity of seal bowl; The bottom of seal bowl is connected with bearing pin (or sleeve) interference fit, has guaranteed seal bowl bottom seals property, and seal bowl is compressed by inside and outside carrier bar contact; The rim of a bowl portion of seal bowl contacts with inner plate circular groove (or outer plate circular groove) and compresses; The rim of a bowl portion of the bottom land of circular groove, groove side and seal bowl constitutes labyrinth seal structure and has guaranteed seal bowl the rim of a bowl portion sealing, and after assembling is accomplished, seal bowl will be compressed with the Elastic Contact of increase with carrier bar; Increase sealing, seal bowl has just sealed the high-quality grease of (being that bearing pin and sleeve exempt to refuel between the lining hinge place) between sleeve end face and the bearing pin like this.
Further preferred, be provided with wear washer between said inner plate and the seal bowl.Wear washer adopts the sheet copper punching out to form, and between the bowl bottom and sleeve end face (perhaps inner plate surface) of seal bowl, when sealing exempts to refuel the chain rotation, prevents that bearing pin or sleeve from directly contacting with Sealing, prevents so produce the wearing and tearing of Sealing side.
As preferably, be arranged with roller, roller on the said sleeve and exempt to refuel lining and roller seal washer, roller exempts to refuel lining between sleeve and roller, and the roller seal washer is between roller both ends of the surface and inner plate.In roller, increase roller and exempt to refuel lining; Be full of the high-quality grease in the lining, the roller side increases seal washer, therefore when sealing exempts to refuel chain roller and sprocket engagement; Can offer roller and sleeve sliding contact surface lubricant oil well automatically, reduce friction.Roller is exempted to refuel the lining internal pore and is full of lubricant oil, and the gap between itself and sleeve is full of the high-quality grease, guarantees that roller exempts to refuel lining and sleeve good lubrication when relatively rotating, and reduces wearing and tearing, and reaches and exempt to refuel effect.Further preferred, it is the powdered metallurgical material lining that said roller exempts to refuel lining, satisfies when roller and sprocket engagement, and the bearing capacity under the higher load impacting situation of small frequency is arranged.Further preferred; Said roller seal washer adopts wear-resisting macromolecule polymeric material (PTFE) to approach packing ring; Satisfy roller and the little usage requirement of inner plate lateral force when exempting to refuel the chain operation, and the reservation roller exempts to refuel the high-quality grease in gap between lining and the sleeve.
The utility model is owing to adopted above technological scheme; In sleeve, increase sleeve and exempt to refuel lining, be full of the high-quality grease in the lining, therefore when sealing exempts to refuel chain work; Can offer lining and pin slide surface of contact lubricant oil well automatically, reduce friction.Adopt the hinged place of Sealing sealing bearing pin and sleeve, stop the entering of foreign, in Sealing, be full of grease equally, the hinged place grease overflows in the inhibition running, guarantees that the hinged place is fully with long-acting lubricated.Therefore, when operation under mal-condition, the utility model through the selflubricating part with sealing configuration sealing exempt to refuel chain and can have good lubricating, resistance to wearing increases the service life.
Description of drawings
Fig. 1 is according to the utility model embodiment 1 stereogram (part chain link);
Fig. 2 is according to the utility model embodiment 2 stereogram (part chain link);
Fig. 3 is according to the utility model embodiment 3 stereogram (part chain link);
Fig. 4 is according to the utility model embodiment 4 stereogram (part chain link).
Wherein, 1, bearing pin; 2, outer plate; 2a, outer plate circular groove; 3, roller seal washer; 4, roller; 5, roller exempts to refuel lining; 6, sleeve; 7, inner plate; 7a, inner plate circular groove; 8, sleeve exempts to refuel lining; 9, wear washer; 10, seal bowl; 11, back-up ring.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the utility model patent is done a detailed explanation.
Embodiment 1:
A kind of sealing as shown in Figure 1 exempts to refuel chain; Alternately connect and compose by inside and outside chain link; Outer link connects a pair of outer plate 2 by two bearing pins 1 and constitutes, and inner link connects a pair of inner plate 7 and constitutes by being set in sleeve 6 on the bearing pin 1, is arranged with sleeve on the said bearing pin 1 and exempts to refuel lining 5; This sleeve exempts to refuel lining 5 between bearing pin 1 and sleeve 6, and said bearing pin 1 two ends are arranged with implementing the Sealing of sealing between sleeve 6 end faces and the bearing pin 1.Said Sealing is a seal bowl 10, and the rim of a bowl portion of seal bowl 10 is towards inner plate 7, and inner plate 7 is provided with the inner plate circular groove 7a that is used to be embedded seal bowl 10 the rim of a bowl portions, the bowl bottom of seal bowl 10 and bearing pin 1 drive fit.Be provided with wear washer 9 between said inner plate 7 and the seal bowl 10.Be arranged with roller 4, roller on the said sleeve 6 and exempt to refuel lining 5 and roller seal washer 3, roller exempts to refuel lining 5 between sleeve 6 and roller 4, and roller seal washer 3 is between roller 4 both ends of the surface and inner plate 7.
In the present embodiment, outer plate 2 is board-types with inner plate 7, near the two ends of interior outer plate, has two holes, and the aperture of inner plate 7 is greater than outer plate 2.Press-fit roller in the roller 4 and exempt to refuel lining 5; Bi-side have roller seal washer 3 respectively; Roller 4 and two roller seal washers 3 can be enclosed within on sleeve 6 outer surfaces rotatably; Two sleeves 6 respectively with the hole interference fit of two inner plates 7, constitute inner link, press-fit sleeve in two sleeves 6 of inner link respectively and exempt to refuel lining 8.
Two bearing pins 1 respectively with the hole interference fit of two outer plates 2, constitute outer link.Between inner plate 7 and outer plate 2; Seal bowl 10 and wear washer 9 are arranged; Seal bowl 10 all is enclosed within on the outer surface of bearing pin 1 with wear washer 9, and wear washer 9 is between seal bowl 10 and sleeve 6 end faces, and the rim of a bowl of seal bowl 10 part is towards inner plate 7; Inner plate 7 corresponding sites have inner plate circular groove 7a, coincide with seal bowl 10.The part that outer plate 2 is exposed in bearing pin 1 end has back-up ring 11.
In addition; Pass with the bearing pin 1 of outer plate 2 interference fit and to exempt to refuel lining 8 in the sleeve 6 with inner plate 7 interference fit; In assembly process; Initial two bearing pin 1 the same sides only with outer plate 2 interference fit, after seal bowl 10, wear washer 9, inner link, wear washer 9 and seal bowl all assemble, the other side outer plate 2 of interference fit again.Thus, two outer plates alternately are connected with two inner plates, exempt to refuel chain thereby constitute to seal.
Sleeve is exempted to refuel lining 8 and is adopted the tin bronze thin plates, and the oil storage hole that surface Machining is uniform sequential rolls and forms.Tin bronze itself has wear resistance and corrosion resistance preferably.The surface Machining oil storage hole guarantees that bearing pin 1 and sleeve exempt to refuel lining 8 good lubrication when relatively rotating, and reduces wearing and tearing.Sleeve is exempted to refuel lining 8 and also can be adopted wear-resisting macromolecule polymeric material-bronze-steel plate three-layer composite self-lubricating thin plate, and the oil storage hole that the macromolecule polymeric material surface Machining is uniform sequential rolls and forms.3-layer composite material has selflubricating and exempts from the oiling effect, and the oil storage hole on surface adds the high-quality grease when initial, guarantees that bearing pin 1 and sleeve exempt to refuel lining 8 good lubrication when relatively rotating, and reduces wearing and tearing, and reaches and exempt to refuel effect.
Roller is exempted to refuel lining 5 and is adopted the powdered metallurgical material linings, satisfies when roller and sprocket engagement, and the bearing capacity under the higher load impacting situation of small frequency is arranged.Roller is exempted to refuel lining 5 internal pores and is full of lubricant oil, and the gap between itself and sleeve 6 is full of the high-quality grease, guarantees that roller exempts to refuel lining 5 good lubrication when relatively rotating with sleeve 6, reduces wearing and tearing, and reaches and exempt to refuel effect.
Roller seal washer 3 adopts the thin packing ring of wear-resisting macromolecule polymeric material, satisfies roller 4 and the little usage requirement of inner plate 7 lateral forces when exempting to refuel the chain operation, and keeps roller and exempt to refuel the high-quality grease in the gap between lining 5 and the sleeve 6.
That seal bowl 10 adopts is wear-resisting, macromolecule polymeric material is injection molded preferably for elasticity and hardness, shape such as bowl-shape.Envelope bowl 10 bottoms are connected with the rim of a bowl is circular-arc, guarantee the elasticity of seal bowl 10.Seal bowl 10 bottom openings are connected with bearing pin 1 interference fit, and contact with outer plate 2 and to compress, and seal bowl 10 the rims of a bowl contact with inner plate circular groove 7a and compress.Seal bearing pin 1 and sleeve and exempted to refuel the high-quality grease between the lining 8 hinge places.
Wear washer 9 adopts the sheet copper punching out to form.Between sleeve 6 and seal bowl 10, when sealing exempts to refuel the chain rotation, stop the contact wear of sleeve 6 and seal bowl 10.
In the present embodiment; Sleeve is exempted to refuel lining 8 and roller and is exempted to refuel lining 5 and flood well and stored the high-quality grease, and grease is fully offered the sliding contact surface of bearing pin 1, sleeve 6, can keep in touch the lubricity of face well; Seal bowl 10 has sealed the hinge place of bearing pin 1 with sleeve 6, sleeve 6 and roller 4 with roller seal washer 3; The entering of the leakage that stops lubricant grease and foreign impurity etc. can guarantee the endurance that the hinged place surface of contact lubricates well, can in outdoor and many dust atmospheres, not carry out can guaranteeing sufficient lubrication under the situation of extra oil supply; Suppress wearing and tearing, improve sealing and exempt to refuel resistance to wearing working life of chain.
Embodiment 2:
A kind of sealing as shown in Figure 2 exempts to refuel chain, is with embodiment 1 difference: do not have roller 4, roller and exempt to refuel lining 5 and roller seal washer 3.
Identical with embodiment 1; Sleeve is exempted to refuel lining 8 and is flooded well and stored the high-quality grease, and grease is fully offered the sliding contact surface of bearing pin 1 and sleeve 6 hinged places, can keep in touch the lubricity of face well; Seal bowl 10 has sealed the hinge place of bearing pin 1 and sleeve 6; The entering of the leakage that stops lubricant grease and foreign impurity etc. can guarantee the endurance that the hinged place surface of contact lubricates well, can in outdoor and many dust atmospheres, not carry out can guaranteeing sufficient lubrication under the situation of extra oil supply; Suppress wearing and tearing, improve sealing and exempt to refuel resistance to wearing working life of chain.
Embodiment 3:
A kind of sealing as shown in Figure 3 exempts to refuel chain, is that with embodiment 1 difference the seal bowl 10 of present embodiment is in the opposite direction with the rim of a bowl of embodiment 1 seal bowl 10, on outer plate 2, has outer plate circular groove 2a, and inner plate fluting not.Present embodiment sleeve 6 will expose inner plate 7 parts, and the bottom of seal bowl 10 is connected with the part interference fit that sleeve 6 exposes inner plate 6; Wear washer 9 compresses seal bowl 10 and contacts with the sealing of outer plate circular groove 2a between seal bowl 10 and inner plate.
Present embodiment is compared embodiment 1; Having reduced bearing pin 1 exposes sleeve 6 and sleeve and exempts to refuel the length of lining 8; Even can make sleeve 6 and sleeve exempt to refuel lining 8 directly to contact with outer plate 2; Reduce the extra bending moment force that is applied on the bearing pin, improved the bearing pin force-bearing situation, improved sealing and exempted to refuel the intensity of chain.Sleeve 6 external diameters are bigger than bearing pin 1 external diameter, and corresponding seal bowl size also will be amplified, and it is big that outer plate circular groove 2a size is also wanted.Compare embodiment 1, present embodiment has improved the requirement to outer plate 2, dwindles its Applicable scope.
In the present embodiment; Identical with embodiment 1; Sleeve is exempted to refuel lining 8 and roller and is exempted to refuel lining 5 and flood well and stored the high-quality grease, and grease is fully offered the sliding contact surface of bearing pin 1, sleeve 6, can keep in touch the lubricity of face well; Seal bowl 10 has sealed the hinge place of bearing pin 1 with sleeve 6, sleeve 6 and roller 4 with roller seal washer 3; The entering of the leakage that stops lubricant grease and foreign impurity etc. can guarantee the endurance that the hinged place surface of contact lubricates well, can in outdoor and many dust atmospheres, not carry out can guaranteeing sufficient lubrication under the situation of extra oil supply; Suppress wearing and tearing, improve sealing and exempt to refuel resistance to wearing working life of chain.
Embodiment 4:
A kind of sealing as shown in Figure 4 exempts to refuel chain, is with embodiment 3 difference, does not have roller 4, roller and exempts to refuel lining 5 and roller seal washer 3.
In the present embodiment, identical with embodiment 3, sleeve is exempted to refuel lining 8 and is flooded well and stored the high-quality grease; Grease is fully offered the sliding contact surface of bearing pin 1 and sleeve 6 hinged places; Can keep in touch the lubricity of face well, seal bowl 10 has sealed the hinge place of bearing pin 1 and sleeve 6, the entering of the leakage of prevention lubricant grease and foreign impurity etc.; Can guarantee the endurance that the hinged place surface of contact is lubricated well; Can in outdoor and many dust atmospheres, not carry out to guarantee sufficient lubrication under the situation of extra oil supply, suppress wearing and tearing, improve sealing and exempt to refuel resistance to wearing working life of chain.
Claims (8)
1. a sealing exempts to refuel chain; Alternately connected and composed by inside and outside chain link, outer link connects a pair of outer plate (2) by two bearing pins (1) and constitutes, and inner link connects a pair of inner plate (7) formation by the sleeve (6) that is set on the bearing pin (1); It is characterized in that; Be arranged with sleeve on the said bearing pin (1) and exempt to refuel lining (5), this sleeve is exempted to refuel lining (5) and is positioned between bearing pin (1) and the sleeve (6), and said bearing pin (1) two ends are arranged with implementing the Sealing of sealing between sleeve (6) end face and the bearing pin (1).
2. a kind of sealing according to claim 1 exempts to refuel chain, it is characterized in that, said sleeve exempts to refuel lining (8) to be had the tin bronze thin plate of oil storage hole to roll by surface Machining to form.
3. a kind of sealing according to claim 1 exempts to refuel chain, it is characterized in that said sleeve exempts to refuel lining (8) for exempting to refuel sliding bearing.
4. a kind of sealing according to claim 1 exempts to refuel chain; It is characterized in that; Said Sealing is seal bowl (10); The rim of a bowl portion of seal bowl (10) is towards inner plate (7), and inner plate (7) is provided with the inner plate circular groove (7a) that is used to be embedded seal bowl (10) the rim of a bowl portion, the bowl bottom of seal bowl (10) and bearing pin (1) drive fit.
5. a kind of sealing according to claim 1 exempts to refuel chain; It is characterized in that; Said Sealing is seal bowl (10); The rim of a bowl portion outward carrier bar (2) of seal bowl (10), outer plate (2) are provided with the outer plate circular groove (2a) that is used to be embedded seal bowl (10) the rim of a bowl portion, and the bowl bottom of seal bowl (10) is set in sleeve (6) and goes up also drive fit with it.
6. exempt to refuel chain according to claim 4 or 5 described a kind of sealings, it is characterized in that, be provided with wear washer (9) between said inner plate (7) and the seal bowl (10).
7. a kind of sealing according to claim 1 exempts to refuel chain; It is characterized in that; Be arranged with roller (4), roller on the said sleeve (6) and exempt to refuel lining (5) and roller seal washer (3); Roller is exempted to refuel lining (5) and is positioned between sleeve (6) and the roller (4), and roller seal washer (3) is positioned between roller (4) both ends of the surface and the inner plate (7).
8. a kind of sealing according to claim 7 exempts to refuel chain, it is characterized in that, it is the powdered metallurgical material lining that said roller exempts to refuel lining (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205560783U CN202418425U (en) | 2011-12-28 | 2011-12-28 | Sealing refueling-free chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205560783U CN202418425U (en) | 2011-12-28 | 2011-12-28 | Sealing refueling-free chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418425U true CN202418425U (en) | 2012-09-05 |
Family
ID=46743195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205560783U Expired - Fee Related CN202418425U (en) | 2011-12-28 | 2011-12-28 | Sealing refueling-free chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418425U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518748A (en) * | 2011-12-28 | 2012-06-27 | 杭州东华链条集团有限公司 | Lubricant-free sealing chain |
| WO2022183943A1 (en) * | 2021-03-03 | 2022-09-09 | 江苏小太阳技术发展有限公司 | Oil-free chain for multilayer setting machine |
-
2011
- 2011-12-28 CN CN2011205560783U patent/CN202418425U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518748A (en) * | 2011-12-28 | 2012-06-27 | 杭州东华链条集团有限公司 | Lubricant-free sealing chain |
| WO2022183943A1 (en) * | 2021-03-03 | 2022-09-09 | 江苏小太阳技术发展有限公司 | Oil-free chain for multilayer setting machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102518748A (en) | Lubricant-free sealing chain | |
| JP4255969B2 (en) | Bearing roller chain | |
| CN1987147B (en) | Solid lubrication oil-free chain | |
| CN201953818U (en) | Self-lubricating sliding bearing | |
| JP2008133871A (en) | Bearing roller chain | |
| CN202418425U (en) | Sealing refueling-free chain | |
| CN207229586U (en) | A kind of orientable engineering bearing of self-lubricating | |
| CN203127627U (en) | Carrier roller of chain bucket machine | |
| CN102042337A (en) | Self-lubricating sliding bearing | |
| CN205173369U (en) | Lubricated step chain exempts from | |
| JP2013029167A (en) | Oilless chain | |
| CN203856962U (en) | Structure for sealing between parts of chain | |
| CN203419474U (en) | Maintenance-free type outer roller plate chain | |
| CN2811218Y (en) | Sealing and lubricating long pitch conveyor chain | |
| CN212952766U (en) | Film stretching conveying chain | |
| CN110762166A (en) | Self-lubricating chain | |
| JP7389559B2 (en) | roller chain | |
| CN203500380U (en) | Plate-leaf chain | |
| CN210504476U (en) | Maintenance-free or low-maintenance self-lubricating sprocket shaft group | |
| CN105317929A (en) | Lubrication-free step chain | |
| CN210889927U (en) | Self-lubricating chain | |
| CN110821954A (en) | Motorcycle axle sleeve of reducible friction | |
| CN112815042B (en) | Transmission chain | |
| CN103899654A (en) | U-shaped combined bearing pedestal sealing device for waterproof carrier roller | |
| CN203809519U (en) | U-shaped combination bearing sealing device of waterproof supporting roller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20201228 |