CN103398091A - Self-lubricating pin - Google Patents
Self-lubricating pin Download PDFInfo
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- CN103398091A CN103398091A CN2013103613188A CN201310361318A CN103398091A CN 103398091 A CN103398091 A CN 103398091A CN 2013103613188 A CN2013103613188 A CN 2013103613188A CN 201310361318 A CN201310361318 A CN 201310361318A CN 103398091 A CN103398091 A CN 103398091A
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- Prior art keywords
- axle sleeve
- ring
- bearing pin
- lubricating
- axle
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Abstract
The invention discloses a self-lubricating pin, and relates to the technology field of engineering machinery processing. The pin comprises a shaft (5), a shaft cover (3), which is covered on the shaft (5), the two ends of the shaft cover (3) are both provided with a blocking ring (2), and each block ring (2) is pressed tightly through a pressing cover (1). Compared to the conventional technology, the self-lubricating pin can solve the problems that in the prior art, the lubricating effect of hinge pins in engineering machinery is not good, the pins are severely frayed or even broken, and the reliability of the whole machine is reduced.
Description
Technical field
The present invention relates to the engineering machinery processing technique field, especially a kind of for the hinging pin shaft on engineering machinery.
Background technique
It is very extensive that the engineering machinery hinging pin shaft uses, and connecting between vehicle frame and vehicle frame, connecting between vehicle frame and equipment, the connection that the equipment individual components is mutual, all used hinging pin shaft.But pin shaft structure does not have unified design standard at present, thus when the actual design of pin shaft structure, different types, different designers, the pin shaft structure that designs varies, and using effect is also undesirable.
Pin shaft structure commonly used generally is mounted in the bearing pin on two-side supporting and intermediate support, bearing pin comprises axle and is sleeved on the axle sleeve on this axle, on axle, offer oil duct, at axle sleeve, offer oil groove, the axle sleeve two ends are equipped with seal ring, and when past lubricating point grease up, lubricating grease just enters on the contact surface of axle and axle sleeve along slinger and oil groove, and form one deck oil film, thereby reach the purpose of lubricated axle.But this pin shaft structure must pass through grease lubrication, and existing grease up mode mainly contains two kinds: the one, and manually lubricated: as namely directly with grease gun, lubricating point to be carried out to grease up; The 2nd, centralized lubrication: namely pass through pump of control lubricated several to dozens of lubricating points simultaneously, laddering centralized lubrication system can be accomplished timing, fixed point, quantitative, sequencing ground grease up arrives needs the position of lubricating; For manually lubricating, it is convenient.But, there are many deficiencies in these two kinds of lubricating systems: 1, manually lubricating efficiency is lower, grease up institute elapsed time is longer, omitting or can not in time adding the wet goods situation easily appears in hand oiling, and add oil filling amount what be difficult to control, because lubricating point directly contacts with extraneous, easily stop up, become rusty and be dead; 2, centralized lubrication shortcoming: cost is high, and higher to viscosity, the turbidity test requirement of grease, the grease use amount is large, causes waste and environmental pollution; Therefore the pin shaft structure that designs a kind of novel maintenance-free becomes more and more meaningful.
Summary of the invention
Problem to be solved by this invention is to provide a kind of selflubricating bearing pin, and not good to solve existing engineering machinery hinging pin shaft lubrication effect, the bearing pin serious wear even ruptures, and reduces the problem of complete machine functional reliability.
In order to address the above problem, technological scheme of the present invention is: this selflubricating bearing pin includes axle and is sleeved on the axle sleeve on described axle, and described axle and described axle sleeve two ends are provided with back-up ring, and described back-up ring compresses by the two ends gland.
In technique scheme, more specifically scheme can be: described axle sleeve (3) is mutually nested external axle sleeve (3-1) and internal axle sleeve (3-2), described external axle sleeve (3-1) is connected with described internal axle sleeve (3-2), the length of described external axle sleeve (3-1) is greater than the length of described internal axle sleeve (3-2), and described internal axle sleeve (3-2) is set with dust ring (4) with the gap location of described back-up ring (2).
Further: described external axle sleeve (3-1) is interference fit with described internal axle sleeve (3-2).
Further: the material of described internal axle sleeve is carbon fiber reinforced ptfe (CFRP).
Owing to having adopted technique scheme, the present invention compared with prior art has following beneficial effect:
1, the pin of this selflubricating bearing pin and axle sleeve use the two ends gland to be assembled into one, the sealing that can well keep bearing pin, can be without the frequent bearing pin of changing, all can guarantee the permanently effective work of machine energy, the user cost of machine is descended, reduce the pollution to environment, and greatly reduce maintenance cost, simple in structure, easy accessibility, can adapt to the environment of different operating modes;
2, the axle sleeve of this selflubricating bearing pin is designed to exterior and interior axle sleeves, exterior and interior axle sleeves adopts interference fit, the length of external axle sleeve is greater than the length of internal axle sleeve, the gap location of internal axle sleeve and back-up ring is set with dust ring, just can adopt press-fit approach the internal axle sleeve symmetry to be pressed onto in the endoporus of external axle sleeve to make it fastening and form one, guarantee sealing preferably;
3, the internal axle sleeve of this selflubricating bearing pin adopts the manufacture of carbon fiber reinforced ptfe (CFRP) material, has excellent self lubricity, wear resistance, can carry out effectively lubricating to bearing pin.
The accompanying drawing explanation
Fig. 1 is the structural drawing of the embodiment of the present invention;
Fig. 2 is the structural drawing of embodiment of the present invention axle sleeve.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail:
This selflubricating bearing pin as shown in Figure 1 and Figure 2, it includes axle 5 and is sleeved on the axle sleeve 3 on axle 5, in axle 5, be designed with in the heart through hole, axle 5 two ends are provided with outside thread, axle 5 should remain in 3.2 ~ 0.8 μ m scopes with the surface roughness of axle sleeve 3 internal surface contact segments, and axle 5 surfaces need hard chromium plating; Its integral body must, through Overheating Treatment, make its surface and core all reach certain hardness requirement simultaneously.Axle 5 and axle sleeve 3 two ends are provided with back-up ring 2, and described back-up ring 2 compresses by gland 1.Back-up ring 2 can prevent effectively that the large particle sandy soil from entering inner hole of shaft sleeve, prevents selflubricating bearing pin premature wear, extends its working life.Tighten the gland 1 at two ends, make becoming one of whole selflubricating bearing pin, axle sleeve 3 just can be around axle 5 rotations.The outer round belt tapering of its of gland 1, interior bore portion is internal thread; Gland 1 is provided with tapped hole, facilitates tightening and dismantling of gland; Gland must make its surface reach certain hardness by heat treatment, and selflubricating bearing pin two ends are designed to cone structure, and during assembling, but integral installation is easy to use to intermediate support and two-side supporting seat.
Axle sleeve 3 is mutually nested external axle sleeve 3-1 and internal axle sleeve 3-2, and external axle sleeve 3-1 and internal axle sleeve 3-2 are interference fit, and outer surface roughness should reach 3.2; The internal axle sleeve inner bore surface roughness should be controlled in 3.2 ~ 0.8 μ m scopes, the length of external axle sleeve 3-1 is greater than the length of internal axle sleeve 3-2, the gap location of internal axle sleeve 3-2 and back-up ring 2, be in the length L scope in Fig. 2, be set with dust ring 4, just can adopt press-fit approach internal axle sleeve 3-2 symmetry to be pressed onto in the endoporus of external axle sleeve 3-1 to make it fastening and form one, prevent from polluting, guarantee sealing preferably.
The material of internal axle sleeve 3-2 is carbon fiber reinforced ptfe (CFRP).Originally the experience impact of dust, contaminating impurity of this material is very little, and it has preferably " mosaicism " " to eat the material of dust metal particle and so on "; Another reason is: it has high static load bearing capacity, and friction factor is little, and the tool related data shows that 10000 hours wear extenies are 0.15mm, so higher with this material making internal axle sleeve reliability index.
Claims (4)
1. a selflubricating bearing pin, include axle (5) and be sleeved on the axle sleeve (3) on described axle (5), and it is characterized in that: described axle sleeve (3) two ends is provided with back-up ring (2), and described back-up ring (2) compresses by gland (1).
2. selflubricating bearing pin according to claim 1, it is characterized in that: described axle sleeve (3) is mutually nested external axle sleeve (3-1) and internal axle sleeve (3-2), described external axle sleeve (3-1) is connected with described internal axle sleeve (3-2), the length of described external axle sleeve (3-1) is greater than the length of described internal axle sleeve (3-2), and described internal axle sleeve (3-2) is set with dust ring (4) with the gap location of described back-up ring (2).
3. selflubricating bearing pin according to claim 2 is characterized in that: described external axle sleeve (3-1) is interference fit with described internal axle sleeve (3-2).
4. according to claim 2 or 3 described selflubricating bearing pins, it is characterized in that: the material of described internal axle sleeve (3-2) is carbon fiber reinforced ptfe (CFRP).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103613188A CN103398091A (en) | 2013-08-19 | 2013-08-19 | Self-lubricating pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103613188A CN103398091A (en) | 2013-08-19 | 2013-08-19 | Self-lubricating pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103398091A true CN103398091A (en) | 2013-11-20 |
Family
ID=49561781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103613188A Pending CN103398091A (en) | 2013-08-19 | 2013-08-19 | Self-lubricating pin |
Country Status (1)
| Country | Link |
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| CN (1) | CN103398091A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4067228A1 (en) * | 2021-03-31 | 2022-10-05 | Airbus Operations Limited | Axle sleeve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998002618A2 (en) * | 1996-07-12 | 1998-01-22 | Caterpillar Inc. | Sealed pin joint assembly |
| WO2000022309A1 (en) * | 1998-10-09 | 2000-04-20 | Hitachi Construction Machinery Co., Ltd. | Bearing device |
| US20030102635A1 (en) * | 2001-03-13 | 2003-06-05 | Hideki Akita | Sealing device |
| US20050163408A1 (en) * | 2002-09-09 | 2005-07-28 | Yusuke Wakabayashi | Bearing device |
| CN1705829A (en) * | 2003-08-25 | 2005-12-07 | 日立建机株式会社 | Sliding bearing assembly and sliding bearing |
| CN2830761Y (en) * | 2005-09-20 | 2006-10-25 | 郑州华龙机械工程有限公司 | Sealing sliding bearing |
| CN102235425A (en) * | 2010-04-27 | 2011-11-09 | 美蓓亚株式会社 | Sliding bearing having self-lubricating liner |
| US20120121319A1 (en) * | 2010-11-16 | 2012-05-17 | Roger Svensson | Expandable sealed pivot system with component lock/unlock function |
-
2013
- 2013-08-19 CN CN2013103613188A patent/CN103398091A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998002618A2 (en) * | 1996-07-12 | 1998-01-22 | Caterpillar Inc. | Sealed pin joint assembly |
| WO2000022309A1 (en) * | 1998-10-09 | 2000-04-20 | Hitachi Construction Machinery Co., Ltd. | Bearing device |
| US20030102635A1 (en) * | 2001-03-13 | 2003-06-05 | Hideki Akita | Sealing device |
| US20050163408A1 (en) * | 2002-09-09 | 2005-07-28 | Yusuke Wakabayashi | Bearing device |
| CN1705829A (en) * | 2003-08-25 | 2005-12-07 | 日立建机株式会社 | Sliding bearing assembly and sliding bearing |
| CN2830761Y (en) * | 2005-09-20 | 2006-10-25 | 郑州华龙机械工程有限公司 | Sealing sliding bearing |
| CN102235425A (en) * | 2010-04-27 | 2011-11-09 | 美蓓亚株式会社 | Sliding bearing having self-lubricating liner |
| US20120121319A1 (en) * | 2010-11-16 | 2012-05-17 | Roger Svensson | Expandable sealed pivot system with component lock/unlock function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4067228A1 (en) * | 2021-03-31 | 2022-10-05 | Airbus Operations Limited | Axle sleeve |
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| PB01 | Publication | ||
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Application publication date: 20131120 |