CN204493582U - Chain unit - Google Patents
Chain unit Download PDFInfo
- Publication number
- CN204493582U CN204493582U CN201520184250.5U CN201520184250U CN204493582U CN 204493582 U CN204493582 U CN 204493582U CN 201520184250 U CN201520184250 U CN 201520184250U CN 204493582 U CN204493582 U CN 204493582U
- Authority
- CN
- China
- Prior art keywords
- rubber layer
- axle sleeve
- buffer part
- bearing pin
- joint
- 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
Abstract
The utility model provides chain unit, it solves short problem in existing chain working life.This chain unit comprises the two pieces of inner plates be fixed together by axle sleeve, the equal correspondence in outside of two pieces of inner plates is provided with one piece of outer plate and two pieces of outer plates are fixed together by a bearing pin, axle sleeve to be set on bearing pin and this axle sleeve is set with roller, the part that bearing pin is positioned at axle sleeve comprises the joint being positioned at middle part and the buffer part being positioned at joint two ends, joint and buffer part are all in cylindric and joint and axle sleeve pass through Spielpassung, be equipped with between each buffer part and axle sleeve in circular rubber layer, rubber layer is coaxial with bearing pin, inner side and the buffer part sidewall of rubber layer recline and in this rubber layer mutually, the equal diameters of the difference of external diameter and the diameter sum of buffer part and joint, rubber layer is attached in buffer part by the mode of spraying.This chain unit has the advantage of long service life.
Description
Technical field
the utility model relates to a kind of chain, particularly chain unit.
Background technique
chain is a kind of very common transmission part, existing chain is cascaded by a section chain unit substantially, and chain unit is made up of two pieces of inner plates, two pieces of outer plates, axle sleeve, bearing pin, rollers etc., wherein, two pieces of inner plates are just to arranging and being fixed together by axle sleeve, two pieces of inner plates are all between two pieces of outer plates and outer plate is relative with inner plate position, two pieces of outer plates are fixed together by bearing pin, and axle sleeve is set on bearing pin and roller sleeve is contained on axle sleeve.
in actual product, axle sleeve cylindrically and the object that is fixed together to realize two pieces of inner plates with the attachment hole interference fit on inner plate respectively of the two ends of this axle sleeve.But operationally, inner chain sheet is applied with larger pressure to axle sleeve two-end part, and metal, by extrusion-deformation, can make inner hole of shaft sleeve shrink, diameter diminishes, when bearing pin rotates relative to axle sleeve, first bearing pin can contact with inner hole of shaft sleeve two-end part, easily causes contacting point to wear and tear, the maximum local two-end part diameter of bearing pin stress diminishes, form the sunk structure that stress is concentrated, and then occur that bearing pin is in the fracture of this recess and the phenomenon of rapid wear, shortens the working life of whole chain.
Summary of the invention
the purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of chain unit of long service life.
the purpose of this utility model realizes by following technical proposal: chain unit, comprise the two pieces of inner plates be fixed together by axle sleeve, the equal correspondence in outside of two pieces of inner plates is provided with one piece of outer plate and two pieces of outer plates are fixed together by a bearing pin, described axle sleeve to be set on described bearing pin and this axle sleeve is set with roller, it is characterized in that, the part that described bearing pin is positioned at axle sleeve comprises the joint being positioned at middle part and the buffer part being positioned at joint two ends, described joint and buffer part are all in cylindric and joint and axle sleeve pass through Spielpassung, be equipped with in circular rubber layer between each described buffer part and axle sleeve, described rubber layer is coaxial with bearing pin, inner side and the buffer part sidewall of described rubber layer recline and in this rubber layer mutually, the equal diameters of the difference of external diameter and the diameter sum of buffer part and joint, described rubber layer is attached in buffer part by the mode of spraying.
by arranging rubber layer at buffer part sidepiece, whole buffer part being wrapped, buffer part being played a protective role thus avoids buffer part directly and axle sleeve contact friction, improve the working life of bearing pin; Simultaneously, by arranging rubber layer, when the endoporus at axle sleeve two ends shrinks, axle sleeve can offset with rubber layer and make rubber layer generation elastic strain absorb the active force produced when both collide, thus the above-mentioned active force effectively reduced suffered by bearing pin, further increase the working life of bearing pin, thus improve the working life of this chain unit.
in above-mentioned chain unit, each described rubber layer outer side wall is equipped with groove in the form of a ring, described groove is coaxial with described rubber layer.
when reality uses, repack with grease in groove, lubricates the surface of contact of rubber layer and axle sleeve to avoid dry friction between the two, thus improves the working life of rubber layer and the fixing with pinned connection, then improve the working life of bearing pin, improve the working life of this chain unit.
in above-mentioned chain unit, each described rubber layer is equipped with several above-mentioned grooves, and several grooves are uniform along the axis of described buffer part.
in each groove, equal repack with grease, further increases the lubrication effect between rubber layer and axle sleeve, improves the working life of this chain unit.
in above-mentioned chain unit, the cross section of each described groove is all in swallow-tail form.
the cross section of groove is swallow-tail form, position-limiting action can be played to the lubricating grease be filled in groove, lubricating grease can only be flowed out in groove when rubber layer is squeezed, thus enable lubricating grease completely for the lubrication between axle sleeve and rubber layer, improve the working life of rubber layer and the fixing with pinned connection, then improve the working life of bearing pin, improve the working life of this chain unit.
in above-mentioned chain unit, the degree of depth of described groove is 0.25 centimetre.
compared with prior art, this chain unit has the following advantages:
1, by arranging rubber layer at buffer part sidepiece, whole buffer part being wrapped, buffer part being played a protective role thus avoids buffer part directly and axle sleeve contact friction, improve the working life of bearing pin.
, by arranging rubber layer, when the endoporus at axle sleeve two ends shrinks, axle sleeve can offset with rubber layer and make rubber layer generation elastic strain absorb the active force produced when both collide, thus the above-mentioned active force effectively reduced suffered by bearing pin, further increase the working life of bearing pin, thus improve the working life of this chain unit.
, groove cross section be swallow-tail form, position-limiting action can be played to the lubricating grease be filled in groove, lubricating grease can only be flowed out in groove when rubber layer is squeezed, thus enable lubricating grease completely for the lubrication between axle sleeve and rubber layer, improve the working life of rubber layer and the fixing with pinned connection, then improve the working life of bearing pin, improve the working life of this chain unit.
Accompanying drawing explanation
fig. 1 is the structural representation of this chain unit;
fig. 2 is the structure for amplifying schematic diagram at A place in Fig. 1;
in figure, 1, inner plate; 2, outer plate; 3, bearing pin; 3a, joint; 3b, buffer part; 4, axle sleeve; 5, roller; 6, rubber layer; 6a, groove.
Embodiment
be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
as shown in Figure 1, this chain unit is made up of inner plate 1, outer plate 2, bearing pin 3, axle sleeve 4, roller 5 etc.
wherein, inner plate 1 have two pieces and two inner plates 1 just to setting.Every block inner plate 1 side is all run through attachment hole one, axle sleeve 4 cylindrically and the two ends of this axle sleeve 4 are embedded in two attachment holes one respectively, now, the two ends of axle sleeve 4 make two pieces of inner plates 1 stably be fixed together respectively together with the madial wall tight abutment of two attachment holes one.As shown in Figure 2, axle sleeve 4 is arranged with roller 5 cylindrically.
outer plate 2 also have two pieces and two inner plates 1 all between two outer plates 2, outer plate 2 and every block outer plate 2 side relative with inner plate 1 position is all run through attachment hole two, the two ends of bearing pin 3 are embedded into respectively in attachment hole two two outer plates 2 are fixed together, and now, bearing pin 3 is located in axle sleeve 4.
specifically, the part that bearing pin 3 is positioned at axle sleeve 4 comprises with axle sleeve 4 Spielpassung and is positioned at the joint 3a at middle part and is positioned at the buffer part 3b at joint 3a two ends.Wherein, buffer part 3b and joint 3a is all greater than the diameter of buffer part 3b in diameter that is cylindric and joint 3a.To be equipped with between each buffer part 3b and axle sleeve 4 in circular rubber layer 6 and rubber layer 6 is coaxial with bearing pin 3.In the present embodiment, rubber layer 6 is attached on buffer part 3b by the mode of spraying and makes bearing pin 3 and rubber layer 6 form an entirety.
as depicted in figs. 1 and 2, inner side and the buffer part 3b sidewall of rubber layer 6 recline and the equal diameters of the difference in the inside and outside footpath of this rubber layer 6 and the diameter sum of buffer part 3b and joint 3a mutually, namely the entirety that formed of rubber layer 6 and bearing pin 3 and axle sleeve 4 are by Spielpassung, to realize the object of bearing pin 3 around own axis.Further illustrate, each rubber layer 6 outer side wall is equipped with some groove 6a in the form of a ring and each groove 6a is all coaxial with rubber layer 6, some groove 6a are uniform along the axis of buffer part 3b, when reality uses, repack with grease in groove 6a, lubricates the surface of contact of rubber layer 6 and axle sleeve 4 to avoid dry friction between the two, thus the working life that improve rubber layer 6 and the fixing be connected with bearing pin 3, then improve the working life of bearing pin 3, improve the working life of this chain unit.
further optimization, the cross section of each groove 6a is all in swallow-tail form, position-limiting action can be played to the lubricating grease be filled in groove 6a, lubricating grease can only be flowed out in groove 6a when rubber layer 6 is squeezed, thus enable lubricating grease completely for the lubrication between axle sleeve 4 and rubber layer 6, the working life that improve rubber layer 6 and the fixing be connected with bearing pin 3, then improve the working life of bearing pin 3, improve the working life of this chain unit.The degree of depth of groove 6a is 0.25 centimetre.
specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (5)
1. chain unit, comprise the two pieces of inner plates be fixed together by axle sleeve, the equal correspondence in outside of two pieces of inner plates is provided with one piece of outer plate and two pieces of outer plates are fixed together by a bearing pin, described axle sleeve to be set on described bearing pin and this axle sleeve is set with roller, it is characterized in that, the part that described bearing pin is positioned at axle sleeve comprises the joint being positioned at middle part and the buffer part being positioned at joint two ends, described joint and buffer part are all in cylindric and joint and axle sleeve pass through Spielpassung, be equipped with in circular rubber layer between each described buffer part and axle sleeve, described rubber layer is coaxial with bearing pin, inner side and the buffer part sidewall of described rubber layer recline and in this rubber layer mutually, the equal diameters of the difference of external diameter and the diameter sum of buffer part and joint, described rubber layer is attached in buffer part by the mode of spraying.
2. chain unit according to claim 1, is characterized in that: each described rubber layer outer side wall is equipped with groove in the form of a ring, described groove is coaxial with described rubber layer.
3. chain unit according to claim 2, is characterized in that: each described rubber layer is equipped with several above-mentioned grooves, and several grooves are uniform along the axis of described buffer part.
4. chain unit according to claim 3, is characterized in that: the cross section of each described groove is all in swallow-tail form.
5. chain unit according to claim 4, is characterized in that: the degree of depth of described groove is 0.25 centimetre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184250.5U CN204493582U (en) | 2015-03-31 | 2015-03-31 | Chain unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184250.5U CN204493582U (en) | 2015-03-31 | 2015-03-31 | Chain unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204493582U true CN204493582U (en) | 2015-07-22 |
Family
ID=53572902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520184250.5U Expired - Fee Related CN204493582U (en) | 2015-03-31 | 2015-03-31 | Chain unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204493582U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018189118A1 (en) | 2017-04-11 | 2018-10-18 | Ketten-Wulf Betriebs-Gmbh | Articulated chain |
-
2015
- 2015-03-31 CN CN201520184250.5U patent/CN204493582U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018189118A1 (en) | 2017-04-11 | 2018-10-18 | Ketten-Wulf Betriebs-Gmbh | Articulated chain |
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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: 20150722 Termination date: 20160331 |