CN113371087A - Track coupling assembling of equal pitch - Google Patents
Track coupling assembling of equal pitch Download PDFInfo
- Publication number
- CN113371087A CN113371087A CN202110638490.8A CN202110638490A CN113371087A CN 113371087 A CN113371087 A CN 113371087A CN 202110638490 A CN202110638490 A CN 202110638490A CN 113371087 A CN113371087 A CN 113371087A
- Authority
- CN
- China
- Prior art keywords
- track
- pin
- end plug
- track pin
- self
- 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 title description 4
- 238000010168 coupling process Methods 0.000 title description 4
- 238000005859 coupling reaction Methods 0.000 title description 4
- 239000004744 fabric Substances 0.000 claims abstract description 51
- 239000011295 pitch Substances 0.000 claims description 18
- 239000000428 dust Substances 0.000 claims description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 10
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 238000005468 ion implantation Methods 0.000 claims description 4
- 238000004073 vulcanization Methods 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 238000002468 ceramisation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/18—Tracks
- B62D55/20—Tracks of articulated type, e.g. chains
- B62D55/205—Connections between track links
- B62D55/21—Links connected by transverse pivot pins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/092—Endless track units; Parts thereof with lubrication means
Abstract
The invention discloses a track connecting assembly with equal pitch, which comprises an end plug dustproof bushing, a self-lubricating fabric liner, a track pin and a track pin lug, wherein the end plug dustproof bushing is arranged on the end plug; the track pin is arranged in the track pin lug through a self-lubricating fabric liner, the outer side of the self-lubricating fabric liner is fixedly connected with the track pin lug, and the inner side of the self-lubricating fabric liner is in clearance fit with the track pin; and the two ends of the track pin are sealed through the end plug dustproof bushings, the outer sides of the end plug dustproof bushings are fixedly connected with the track pin lugs, the inner sides of the end plug dustproof bushings are in interference fit with the track pin, and the end plug dustproof bushings are axially limited through the axle bumper structure of the track pin lugs. The track pitch of the invention is not changed.
Description
Technical Field
The invention relates to the technical field of engineering machinery traveling systems, in particular to a track connecting assembly with equal pitch.
Background
The rubber-coated track shoe is invented, all the rubber-coated track shoes are coated in the track pin lug, namely, the track pin lug and the track pin are connected by adopting the rubber bushing, so that the service life and the efficiency of the track shoe are improved. Firstly, the rubber bushings of the track plate connected by the rubber bushings have different compression deformation under different stress working conditions, so that the track pitch continuously and complexly changes among sub-pitch, equal pitch and super-pitch, and further the track is meshed to generate impact and vibration, thereby greatly increasing the power consumption of the track propelling device, and causing the track to climb or jump teeth or even strip in serious cases; secondly, along with the development of the tank towards heavy load and high speed, the shearing, extrusion and torsion actions borne by the rubber bushing in the rubber-coated track plate are stronger, and in addition, the early fatigue damage of the rubber bushing is caused by the severe working environment of the track and the unreasonable design of the rubber formula, so that the difference between the service life of the driving mileage of the track and the expected target is larger and larger.
Disclosure of Invention
In view of the above, the present invention provides an equal pitch track attachment assembly, wherein the track pitch is unchanged.
The technical scheme adopted by the invention is as follows:
a track connecting assembly with equal pitches comprises an end plug dustproof bushing, a self-lubricating fabric liner, a track pin and a track pin lug;
the crawler pin is arranged in the crawler pin lug through a self-lubricating fabric liner, the outer side of the self-lubricating fabric liner is fixedly connected with the crawler pin lug, and the inner side of the self-lubricating fabric liner is in clearance fit with the crawler pin; and the two ends of the track pin are sealed through the end plug dustproof bushings, the outer sides of the end plug dustproof bushings are fixedly connected with the track pin lugs, the inner sides of the end plug dustproof bushings are in interference fit with the track pin, and the end plug dustproof bushings are axially limited through the axle bumper structure of the track pin lugs.
Further, the outer surface of the track pin is subjected to corrosion-resistant and wear-resistant treatment.
Further, the anticorrosion and wear-resistant treatment is surface phosphorization or chromium plating or ion implantation or surface ceramization.
Furthermore, the self-lubricating fabric liner is of a two-section structure, is symmetrically arranged in the track pin lug and is axially limited by the shaft stop structure of the track pin lug.
Further, the end plug dustproof bushing is fixedly connected with the track pin lug in a vulcanization mode.
Further, the self-lubricating fabric liner is fixedly connected with the pin lug of the track in a gluing mode.
Further, the end plug dustproof bushing is a rubber bushing.
Further, the self-lubricating fabric liner is made of polytetrafluoroethylene fiber fabric.
Further, the central axes of the end plug dust-proof bushing, the self-lubricating fabric liner, the track pin lug and the track pin are coincident.
Has the advantages that:
1. the two ends of the track pin are sealed through the end plug dustproof bushings, the end plug dustproof bushings do not bear various complex stress between the track pin lug and the track pin any more, only play a role of dustproof sealing, do not generate compression deformation, do not need to rely on torsional deformation of the end plug dustproof bushings to realize relative rotation of the track pin lug and the track pin, and have unchanged track pitch, thereby having longer service life.
Secondly, a friction pair with a very low friction coefficient is formed between the self-lubricating fabric liner and the track pin, and the self-lubricating fabric liner is resistant to high pressure, heavy load and impact.
Moreover, the axial limiting of the shaft stop structure of the track pin lug is realized by the end plug dustproof bushing, so that the end plug dustproof bushing is not directly contacted with the self-lubricating fabric liner to generate abrasion, and a certain axial compression deformation space is reserved for interference deformation of the end plug dustproof bushing.
2. The self-lubricating fabric liner adopts a polytetrafluoroethylene fiber fabric which is a double-layer composite fabric made of Polytetrafluoroethylene (PTFE) and glass fiber or aramid fiber and the like by a specific method and through special dipping treatment, wherein the surface of the PTFE fiber fabric rich in PTFE fiber is a friction working surface and is used for forming a friction pair with a very low friction coefficient with a track pin, and the other surface of the PTFE fiber is a bonding surface and is mainly made of fiber with high strength and good cohesiveness and is used for forming firm connection with the inner wall of a track pin lug; and secondly, the PTFE fiber fabric has higher bearing capacity, can cope with the situations of low-temperature vitrification and high-temperature environment overheating, has wider temperature application range and better corrosion resistance, and is suitable for various severe use environments of the crawler.
3. The dustproof bushing of the end plug adopts the rubber bushing which is used in the rubberizing crawler belt and is mature, and the processing and assembling process has high maturity, low cost and high reliability.
4. The outer surface of the track pin is subjected to surface phosphating or chromium plating treatment, so that when a friction pair is formed by the self-lubricating braided fabric liner and the track pin, the corrosion resistance and the wear resistance of the track pin can be enhanced, and the loose hole and groove network surface generated by plating chromium on the small hole or the loose hole on the phosphating film can effectively store the self-lubricating braided fabric liner transfer film, thereby playing a better lubricating role and further reducing the wear: the outer surface is subjected to ion implantation or surface ceramic treatment, so that the characteristics of wear resistance, corrosion resistance, high-voltage insulation and the like of the track pin can be enhanced, and more excellent working performance can be obtained.
Drawings
FIG. 1 is a schematic cross-sectional view of an assembly structure of the present invention;
FIG. 2 is a schematic cross-sectional view of an assembly structure of a two-segment self-lubricating fabric liner track link assembly;
FIG. 3 is an isometric view of a track pin lug to track pin connection for a single-plate, single-pin track embodying the invention in accordance with example 1;
FIG. 4 is a schematic half-section view of a track attachment assembly for a single-plate, single-pin track in accordance with the present invention, incorporating embodiment 1;
FIG. 5 is an isometric view of a track attachment assembly for a two-plate, two-pin track in accordance with the invention, embodying example 2;
FIG. 6 is a schematic half-section view of a track attachment assembly for a two-plate, two-pin track in accordance with the present invention, incorporating embodiment 2;
wherein, 1-end plug dustproof bush, 2-self-lubricating fabric liner, 3-track pin ear, 4-track pin.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The invention provides a track connecting assembly with equal pitch, which comprises an end plug dustproof bushing 1, a self-lubricating fabric liner 2, a track pin 4 and a track pin lug 3 as shown in figure 1.
The track pin 4 is arranged in the track pin lug 3 through the self-lubricating fabric liner 2, the outer side of the self-lubricating fabric liner 2 is fixedly connected with the track pin lug 3 in a cementing mode, and the inner side of the self-lubricating fabric liner 2 is in clearance fit with the track pin 4; and 4 both ends of track pin are sealed through the realization of end plug dust proof bush 1, and 1 outside of end plug dust proof bush links firmly with track round pin ear 3 through the vulcanization mode, and 1 inboard and 4 interference fit of track round pin of end plug dust proof bush, and end plug dust proof bush 1 is spacing through the axle bumper structure axial of track round pin ear 3 simultaneously, and end plug dust proof bush 1 and self-lubricating fabric liner 2 are not direct contact. The central axes of the end plug dust proof bushing 1, the self-lubricating fabric liner 2, the track pin lug 3 and the track pin 4 coincide.
The end plug dustproof bushing 1 is a rubber bushing which only plays a role in sealing, and compared with the existing scheme that the end plug dustproof bushing still needs to bear shearing, extruding and twisting, the end plug dustproof bushing degraded in use can fully play the advantages of the original product, and meanwhile, the service life of the end plug dustproof bushing is guaranteed. The self-lubricating fabric liner 2 is made of polytetrafluoroethylene fiber fabric. Practice proves that the PTFE fiber fabric has good bonding performance under a proper bonding process, can ensure the bonding strength with a matrix and reliably keeps fixedly connected with the track pin lug 3. The outer surface of the track pin 4 is subjected to corrosion and wear resistant treatment, and can be subjected to surface phosphorization or chromium plating treatment or ion implantation or surface ceramic treatment.
In a preferred embodiment, as shown in fig. 2, if the self-lubricating fabric liner 2 is too long, in order to solve the problems of uneven stress and excessive installation difficulty caused by the fixed connection between the self-lubricating fabric liner 2 and the track pin lug 3, the self-lubricating fabric liner 2 is divided into two sections according to the length of the inner hole of the track pin lug 3, is of a two-section structure, is symmetrically installed in the track pin lug 3, and is axially limited by the axle stop structure of the track pin lug 3.
Example 1:
as shown in fig. 3 and 4, the track connecting assembly of a single-plate single-pin track plate has a left-right mirror symmetry of the whole track plate, so that fig. 4 shows only a half of the sectional structure, and the structures (installed at the end of the track pin 4) such as lock nuts for limiting the axial position of the track pin 4 at both ends thereof are not shown because they are not relevant to the present invention. The lengths of the track pin lugs 3 on the two sides and the length of the track pin lug 3 in the middle are generally different, and the self-lubricating fabric liner 2 with different thicknesses is required to be designed according to different stress.
The outer side of the end plug dustproof bushing 1 is fixedly connected with the track pin lug 3 in a vulcanization mode, the inner side of the end plug dustproof bushing is connected with the track pin 4 in a certain interference range, the interference range is selected to be smaller than that of a rubber bushing in a rubberized track, and the end plug dustproof bushing 1 only has a dustproof function and does not play a role in transmitting the stress of the track and does not need to realize the relative rotation of the track pin lug 3 and the track pin 4 by means of torsional deformation of the end plug dustproof bushing 1. The outer ring of the self-lubricating fabric liner 2 is fixedly connected with the track pin lug 3 in a cementing mode, and the inner ring is connected with the track pin 4 in a clearance fit mode. The central axes of the end plug dust proof bushing 1, the self-lubricating fabric liner 2, the track pin lug 3 and the track pin 4 coincide.
Example 2:
as shown in fig. 5 and 6, the track connecting assembly of the double-plate double-pin track shoe has a left-right mirror image symmetry of the whole track shoe, so that fig. 6 shows only a half of the sectional structure, and the intermediate coupling and the end couplings for engaging with the driving wheel at both ends of the track shoe are not shown in the figures because they are not related to the present invention. The track pin lugs 3 of the double-plate double-pin track plate are generally equal in length, so that the self-lubricating fabric liner 2 with the same specification and size can be used, and the universality and the interchangeability are high. Example 2 end plug dust bushings 1, self-lubricating fabric liners 2 disposed between track pin ears 3 and track pins 4 are identical to example 1.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A track connecting assembly with equal pitches is characterized by comprising an end plug dustproof bushing, a self-lubricating fabric liner, a track pin and a track pin lug;
the crawler pin is arranged in the crawler pin lug through a self-lubricating fabric liner, the outer side of the self-lubricating fabric liner is fixedly connected with the crawler pin lug, and the inner side of the self-lubricating fabric liner is in clearance fit with the crawler pin; and the two ends of the track pin are sealed through the end plug dustproof bushings, the outer sides of the end plug dustproof bushings are fixedly connected with the track pin lugs, the inner sides of the end plug dustproof bushings are in interference fit with the track pin, and the end plug dustproof bushings are axially limited through the axle bumper structure of the track pin lugs.
2. An equal-pitch track attachment assembly as defined in claim 1, wherein the outer surface of the track pin is treated to resist corrosion and wear.
3. An equal-pitch track attachment assembly as claimed in claim 2, wherein the anti-corrosive wear resistant treatment is surface phosphating or chrome plating or ion implantation or surface ceramicization.
4. An equal pitch track attachment assembly as claimed in any one of claims 1 to 3, wherein said self-lubricating fabric liner is of two-piece construction, symmetrically mounted within the track pin lug and axially restrained by the axle stop formation of the track pin lug.
5. An equal pitch track attachment assembly as claimed in any one of claims 1 to 3, wherein said end plug dust bushings are secured to the track pin lugs by vulcanization.
6. An equally spaced track link assembly according to any one of claims 1 to 3 wherein the self-lubricating fabric pads are secured to the track pin lugs by gluing.
7. A constant pitch track attachment assembly as claimed in any one of claims 1 to 3, wherein said end plug dust bushings are rubber bushings.
8. An equally spaced track link assembly according to any one of claims 1 to 3 wherein the self-lubricating fabric backing is of polytetrafluoroethylene fibre fabric.
9. A constant pitch track attachment assembly as claimed in any one of claims 1 to 3, wherein the central axes of said end plug dust bushing, self-lubricating fabric liner, track pin lug and track pin coincide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110638490.8A CN113371087A (en) | 2021-06-08 | 2021-06-08 | Track coupling assembling of equal pitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110638490.8A CN113371087A (en) | 2021-06-08 | 2021-06-08 | Track coupling assembling of equal pitch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113371087A true CN113371087A (en) | 2021-09-10 |
Family
ID=77572711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110638490.8A Pending CN113371087A (en) | 2021-06-08 | 2021-06-08 | Track coupling assembling of equal pitch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113371087A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1817716A (en) * | 2005-02-11 | 2006-08-16 | 卡特彼勒公司 | Work machine track roller assembly |
| CN202597472U (en) * | 2011-12-23 | 2012-12-12 | 中国石化销售有限公司华南分公司 | Self-lubricating fabric sliding shaft sleeve |
| CN105473430A (en) * | 2013-08-29 | 2016-04-06 | 卡特彼勒公司 | Track joint assemblies |
| CN105667615A (en) * | 2014-11-17 | 2016-06-15 | 扬州明博钢结构有限公司 | Caterpillar chain of riverway sewage disposal dredging machine |
| US20170057572A1 (en) * | 2015-08-28 | 2017-03-02 | Caterpillar Inc. | Track Joint Assembly |
| CN107922023A (en) * | 2015-08-19 | 2018-04-17 | 卡特彼勒公司 | Dig up mine for hydraulic pressure and shovel the lubricating wick cylinder of crawler belt |
-
2021
- 2021-06-08 CN CN202110638490.8A patent/CN113371087A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1817716A (en) * | 2005-02-11 | 2006-08-16 | 卡特彼勒公司 | Work machine track roller assembly |
| CN202597472U (en) * | 2011-12-23 | 2012-12-12 | 中国石化销售有限公司华南分公司 | Self-lubricating fabric sliding shaft sleeve |
| CN105473430A (en) * | 2013-08-29 | 2016-04-06 | 卡特彼勒公司 | Track joint assemblies |
| CN105667615A (en) * | 2014-11-17 | 2016-06-15 | 扬州明博钢结构有限公司 | Caterpillar chain of riverway sewage disposal dredging machine |
| CN107922023A (en) * | 2015-08-19 | 2018-04-17 | 卡特彼勒公司 | Dig up mine for hydraulic pressure and shovel the lubricating wick cylinder of crawler belt |
| US20170057572A1 (en) * | 2015-08-28 | 2017-03-02 | Caterpillar Inc. | Track Joint Assembly |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210910 |