CN207526869U - A kind of novel combination type multi-diameter shaft - Google Patents
A kind of novel combination type multi-diameter shaft Download PDFInfo
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- CN207526869U CN207526869U CN201721640240.3U CN201721640240U CN207526869U CN 207526869 U CN207526869 U CN 207526869U CN 201721640240 U CN201721640240 U CN 201721640240U CN 207526869 U CN207526869 U CN 207526869U
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- sleeve
- intermediate sleeve
- housing
- outside framework
- shaft
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Abstract
A kind of novel combination type multi-diameter shaft, including inner sleeve, intermediate sleeve, housing, inner shaft, outside framework oil seal, it is characterized in that it is arranged with inner sleeve, intermediate sleeve, housing in inner shaft successively in order, housing, intermediate sleeve, inner sleeve outer diameter be sequentially reduced, its axial section is stepped, and wherein inner sleeve and housing are interference fitted respectively with inner shaft, intermediate sleeve and inner shaft clearance fit；Outside framework oil seal is both provided between inner sleeve and intermediate sleeve, between intermediate sleeve and housing；There are one lubricating oil cavitys for the inside tool of inner shaft, the oil duct of conveying lubricating oil is provided between inner shaft and intermediate sleeve, between intermediate sleeve and inner sleeve, between intermediate sleeve and housing, the combined type multi-diameter shaft provides reliable and stable lubrication and sealing for K suspended swinging processes, the utility model is simple to manufacture, occupied space smaller, under same space requirement, the load bigger that the utility model can undertake, its application range greatly improved, reduce machining accuracy and difficulty simultaneously, it is convenient for assembly, it improves work efficiency.
Description
Technical field
The utility model is related to axis technical field more particularly to a kind of combined type multi-diameter shafts of bull-dozer K suspension parts.
Background technology
Because bull-dozer operating mode is generally more severe, road surface big rise and fall during the entire process of operation, domestic and international high-power is carried out
Belt chassis of bulldozer system is generally by the way of K suspensions.K suspensions are a kind of common thrust wheel arrangement sides of earth mover
Formula is, it can be achieved that the swing of certain angle, so as to improve bull-dozer road surface passability.Because being similar to K words, therefore it is referred to as K suspensions, sees attached
Fig. 1, when road surface rises and falls or encounters obstacle, gully, two thrust wheels in K suspensions can be around multi-diameter shaft relative to the bottom on swing span
Dynamic, swing span itself can also be swung up and down relative to bogie frame, load can be allowed to be more evenly distributed in this way, avoid single thrust wheel
Stress is excessive, can also improve complete machine attachment and hauling ability, and the operation that the cushioning effect of rubber pad can improve driver is comfortable
Property.
The characteristics of K suspended swingings is high frequency heavy duty, is designed because of structure constraint, angle of revolution is generally 3 ° hereinafter, seeing
Attached drawing 2, load include impact in main screw lift and walking, operation process etc., therefore in design and manufacturing process, it need to examine simultaneously
Consider sealing and the bearing capacity of multi-diameter shaft.
The patent No. 201120534126.9 discloses a kind of utility model of combined type multi-diameter shaft, employs double floating sealed knots
Structure is shown in attached drawing 3, which is mainly characterized by non-contact seals, and end wear can compensate automatically, and wearability is good, and reliability is high.
Shortcoming is floating sealing ring structure constraint, under the conditions of same carrying, because there are groove, to radially and the space requirement of circumferential direction all compared with
Greatly, more demanding to the accuracy of manufacture of groove and floating sealing ring, floating sealing ring assembly difficulty is big, needs special tooling, to assembly crewman
It is more demanding.
Invention content
To solve the above-mentioned problems, the utility model provides a kind of novel combination type multi-diameter shaft, and its purpose is to provide one
Kind not only ensures the stability for lubricating, sealing, but also can reduce machining accuracy and difficulty, makes manufacture, assembling more simple novel
Combined type multi-diameter shaft.
The novel combination type multi-diameter shaft, including inner sleeve, intermediate sleeve, housing, inner shaft, outside framework oil seal, housing, centre
Set, inner sleeve outer diameter be sequentially reduced, axial section is stepped, and is arranged with inner sleeve, intermediate sleeve, outer in inner shaft successively in order
Set, wherein inner sleeve and housing are interference fitted respectively with inner shaft, intermediate sleeve and inner shaft clearance fit；Between inner sleeve and intermediate sleeve, in
Between be both provided with outside framework oil seal between set and housing, the inside tool of inner shaft there are one lubricating oil cavity, between inner shaft and intermediate sleeve,
The oil duct of conveying lubricating oil is provided between intermediate sleeve and inner sleeve, between intermediate sleeve and housing.
Further, the outside framework oil seal, including rubber oil sea body, metallic framework and helical spring or O-ring, rubber
For oil seal body in outside, metallic framework plays booster action inside rubber oil sea body, and metallic framework side is equipped with and compensates bone at any time
From the helical spring or O-ring of clamp force, rubber oil sea body has been provided with the external lip of dustproof effect and has played sealing, lubrication frame oil sealing
The inner lip of effect, being provided on rubber oil sea body prevents fluid from being revealed between contact surface out of outside framework oil seal peripheral surface and cavity
Or the effect auxiliary section of intrusion, and it is convenient for assembly.
Further, due to oil film existing between the inner lip and axis of rubber oil sea body, this oil film moistens with fluid
Sliding characteristic.Under the action of surface tension of liquid, the rigidity of oil film makes oil film form a new lunar surface with air contact jaw just,
The leakage of working media is prevented, so as to fulfill the sealing of rotary shaft.
The beneficial effects of the utility model are：The novel combination type multi-diameter shaft is provides during K suspended swingings
Reliable and stable lubrication and sealing compared to the combined type multi-diameter shaft of former floating sealing ring form, manufacture simpler, occupied space smaller,
Under same space requirement, its application range greatly improved, while reduces machining accuracy and difficulty in the load bigger that can undertake
Degree, it is convenient for assembly, it improves work efficiency.
Description of the drawings
The utility model is described in further detail below in conjunction with attached drawing.
Attached drawing 1 is the schematic diagram of prior art chassis of bulldozer system；
Attached drawing 2 is prior art K suspended axles side and sectional view；
Attached drawing 3 is prior art combined type multidiameter structure schematic diagram；
Attached drawing 4 is the utility model structure diagram；
Attached drawing 5 is the utility model outside framework oil seal structure diagram；
In attached drawing：1 housing, 2 intermediate sleeves, 3 inner sleeves, 4 inner shafts, 4.1 lubricating oil cavitys, 5 outside framework oil seals；5.1 rubber oil sea
Body, 5.1.1 external lips, 5.1.2 inner lips, 5.1.3 auxiliary sections, 5.2 metallic frameworks, 5.3 helical springs.
Specific embodiment
In order to enable those skilled in the art to better understand the technical solutions of the present invention, below in conjunction with the accompanying drawings 4 and attached
The utility model is described in further detail for Fig. 5 and specific embodiment.
Implement 1：The utility model includes inner sleeve 3, intermediate sleeve 2, housing 1, inner shaft 4, outside framework oil seal 5, skeleton oil
Envelope 5 includes rubber oil sea body 5.1, metallic framework 5.2, helical spring 5.3.First by the inner shaft of multi-diameter shaft 4 in order with inner sleeve
3rd, intermediate sleeve 2,1 set of housing force together, and wherein inner sleeve 3 and housing 1 are interference fitted with inner shaft 4, intermediate sleeve 2 and 4 gap of inner shaft
Cooperation；Outside framework oil seal 5 is provided between intermediate sleeve 2 and inner sleeve 3 and housing 1；There are one lubricating oil cavity 4.1, injections in inner shaft 4
Then multi-diameter shaft is pressed into forcing press in K suspensions by a certain amount of lubricating oil.In bull-dozer walking and operation process, rank
Terraced axis can realize swinging up and down for thrust wheel, in swing process, the skeleton rubber oil between intermediate sleeve 2 and inner sleeve 3, housing 1
The inner lip and 4 contact surface of inner shaft for sealing body 5.1 form oil body dynamic pressure oil film, play sealing and lubricating action, skeleton rubber oil seal
The external lip of body 5.1 plays dustproof effect；Outside framework oil seal metallic framework 5.2 plays the role of support reinforcing；Outside framework oil seal torsional spring
5.3 provide support force and balancing force for outside framework oil seal 5, can compensate the wear extent during outside framework oil seal 5 works to the greatest extent；In
Between also form lubricating oil film on 2 cylindrical surfaces that are contacted with inner shaft 3 of set, so as to play sealing and lubricating action.
Implement 2：The utility model includes inner sleeve 3, intermediate sleeve 2, housing 1, inner shaft 4, outside framework oil seal 5, skeleton oil
Envelope 5 includes rubber oil sea body 5.1, metallic framework 5.2, O-ring.First by the inner shaft of multi-diameter shaft 4 in order with inner sleeve 3, intermediate
Set 2,1 set of housing force together, and wherein inner sleeve 3 and housing 1 are interference fitted with inner shaft 4, intermediate sleeve 2 and 4 clearance fit of inner shaft；In
Between set 2 and inner sleeve 3 and housing 1 between be provided with outside framework oil seal 5；There are one lubricating oil cavitys 4.1 in inner shaft 4, inject a certain amount of
Lubricating oil, then by multi-diameter shaft with forcing press be pressed into K suspension in.In bull-dozer walking and operation process, multi-diameter shaft can
Realize swinging up and down for thrust wheel, in swing process, the skeleton rubber oil seal body 5.1 between intermediate sleeve 2 and inner sleeve 3, housing 1
Inner lip and 4 contact surface of inner shaft form oil body dynamic pressure oil film, play sealing and lubricating action, skeleton rubber oil seal body 5.1
External lip plays dustproof effect；Outside framework oil seal metallic framework 5.2 plays the role of support reinforcing；Outside framework oil seal O-ring is outside framework oil seal 5
Support force and balancing force are provided, the wear extent during outside framework oil seal 5 works, O-ring and torsional spring can be compensated to the greatest extent
Effect it is essentially identical but more extreme in ambient temperature, complete machine working media have corrosivity when, should preferentially select O
Type circle, it is stronger to environmental suitability；Lubricating oil film is also formed on the cylindrical surface that intermediate sleeve 2 is contacted with inner shaft 3, so as to play
Sealing and lubricating action.
The utility model manufactures and assembling is simple, meets the design requirement of K suspension ladder shaft members, improves bull-dozer
In complex road surface entirely through rate and working efficiency.
The topology example of the outside framework oil seal only present invention in Fig. 5, the outside framework oil seal of other structures, as long as by metal
Skeleton and helical spring or O-ring or other flexible elements, rubber oil sea body composition, no matter its specific fit dimension and its
The combined type multi-diameter shaft that his component forms together should all be included in the scope of protection of the utility model.
The number of oil leab is how many and specific location may be different from example；Inner shaft and the shape of three sections of sets may have more
Kind way of realization.Above-mentioned several various forms of combined type multi-diameter shafts should also be included in the scope of protection of the utility model.
Claims (5)
1. a kind of novel combination type multi-diameter shaft, including housing（1）, intermediate sleeve（2）, inner sleeve（3）, inner shaft（4）, outside framework oil seal（5）,
It is characterized in that housing（1）, intermediate sleeve（2）, inner sleeve（3）Outer diameter be sequentially reduced, axial section is stepped, inner shaft（4）On
It is arranged with inner sleeve successively in order（3）, intermediate sleeve（2）, housing（1）, wherein inner sleeve（3）And housing（1）Respectively with inner shaft（4）It crosses
It is full of cooperation, intermediate sleeve（2）With inner shaft（4）Clearance fit, inner sleeve（3）With intermediate sleeve（2）Between, intermediate sleeve（2）With housing（1）It
Between be both provided with outside framework oil seal（5）, inner shaft（4）Inside tool there are one lubricating oil cavity（4.1）, inner shaft（4）With intermediate sleeve（2）
Between, intermediate sleeve（2）With inner sleeve（3）Between, intermediate sleeve（2）With housing（1）Between be provided with conveying lubricating oil oil duct.
2. novel combination type multi-diameter shaft according to claim 1, it is characterized in that outside framework oil seal（5）Including rubber oil sea body
（5.1）, positioned at rubber oil sea body（5.1）Play the metallic framework of booster action in inside（5.2）With positioned at metallic framework（5.2）Side
Outside framework oil seal is compensated at any time（5）From the helical spring of clamp force（5.3）.
3. novel combination type multi-diameter shaft according to claim 1, it is characterized in that outside framework oil seal（5）Including rubber oil sea body
（5.1）, positioned at rubber oil sea body（5.1）Play the metallic framework of booster action in inside（5.2）With positioned at metallic framework（5.2）Side
Outside framework oil seal is compensated at any time（5）From the O-ring of clamp force.
4. the novel combination type multi-diameter shaft according to Claims 2 or 3, it is characterized in that rubber oil sea body（5.1）It has been provided with
The external lip of dustproof effect（5.1.1）With the inner lip for playing sealing, lubricating action（5.1.2）.
5. the novel combination type multi-diameter shaft according to Claims 2 or 3, it is characterized in that rubber oil sea body（5.1）It is provided with anti-
Fluid stopping body is from outside framework oil seal（5）The auxiliary section revealed or invaded between contact surface in peripheral surface and cavity（5.1.3）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721640240.3U CN207526869U (en) | 2017-11-30 | 2017-11-30 | A kind of novel combination type multi-diameter shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721640240.3U CN207526869U (en) | 2017-11-30 | 2017-11-30 | A kind of novel combination type multi-diameter shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207526869U true CN207526869U (en) | 2018-06-22 |
Family
ID=62581091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721640240.3U Active CN207526869U (en) | 2017-11-30 | 2017-11-30 | A kind of novel combination type multi-diameter shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207526869U (en) |
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2017
- 2017-11-30 CN CN201721640240.3U patent/CN207526869U/en active Active
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