CN101705997A - Dynamic sealing device and wheel side speed reducer provided with same - Google Patents
Dynamic sealing device and wheel side speed reducer provided with same Download PDFInfo
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- CN101705997A CN101705997A CN 200910250155 CN200910250155A CN101705997A CN 101705997 A CN101705997 A CN 101705997A CN 200910250155 CN200910250155 CN 200910250155 CN 200910250155 A CN200910250155 A CN 200910250155A CN 101705997 A CN101705997 A CN 101705997A
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- elastomer
- connecting body
- speed reducer
- dynamic seal
- wheel side
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a dynamic sealing device and a wheel side speed reducer provided with the same. The disclosed dynamic sealing device is used for sealing a gap between a first object (2-1) and a second object (3-1) which relatively move, the dynamic sealing device comprises an elastic body (4) for filling the gap, and an elastic compensator (5) for supporting the elastic body (4) is also arranged between the first object (2-1) and the second object (3-1), so that the elastic body (4) can cling to the first object (2-1). The elastic compensator (5) provides supporting power for the elastic body (4), so that the worn elastic body (4) can still cling to the first object (2-1), and the sealing between the first object (2-1) and the second object (3-1) is kept, thereby prolonging the service life of the dynamic sealing device, reducing the total vehicle fault rate of the wheel side speed reducer, decreasing the maintenance frequency and improving the work efficiency of the wheel side speed reducer.
Description
Technical field
The present invention relates to field of sealing technology, particularly relate to a kind of dynamic seal apparatus.In addition, the invention still further relates to a kind of wheel side speed reducer with above-mentioned dynamic seal apparatus.
Background technique
Dynamic seal apparatus is the important component part of a lot of engineering machinery, and the quality of its sealability will directly influence the service behaviour of engineering machinery.Along with the continuous progress of society, also more and more higher to the requirement of the sealability of engineering machinery, how efficiently, economically engineering machinery is carried out motive sealing, be the major issue that a lot of engineers and technicians pay close attention to.
With the wheel side speed reducer is example, and the motive sealing performance between its rotating part and the standing part has considerable influence to the working efficiency of wheel side speed reducer.
Please refer to Fig. 1 to Fig. 3, Fig. 1 is a kind of structural representation of typical wheel side speed reducer; Fig. 2 is the partial enlarged drawing of A part among Fig. 1; Fig. 3 is the partial enlarged drawing of B part among Fig. 1.
In the wheel side speed reducer, standing part 100 is connected with rotating part by connecting body, be fixedly connected with on the rotating part and support gland 12, when rotating part rotates with respect to standing part, rotating part drives and supports gland 12 rotations, in order to guarantee to keep sealing between rotating part and the standing part 100, support between gland 12 and the connecting body 13 and be provided with Sealing 11.
As shown in Figure 2, Sealing 11 is located at and is supported between gland 12 and the connecting body 13, rely on the assembling between Sealing 11 and the connecting body 13 to guarantee sealability, but behind the work certain hour, wearing and tearing can appear in Sealing 11, cause supporting between gland 12 and the connecting body 13 and can not seal fully, leakage phenomenon occurs, influence the wheel side speed reducer proper functioning.Can frequently rotate between gland 12 and the connecting body 13 and support, Sealing 11 frequently rubs with connecting body 13, so, Sealing 11 is easy to wearing and tearing, need often to change, this has not only increased the maintenance cost of wheel side speed reducer, also can influence the working efficiency of wheel side speed reducer.
In addition, the connecting body 13 shown in Figure 3 and the connection diagram of standing part, because the standing part 100 of connecting body 13 and wheel side speed reducer links together by assembling, so the dimension precision requirement to the joint is relatively stricter, requirement on machining accuracy is very high, and also very high to the required precision of first assembling.This has increased the cost of production of equipment undoubtedly, has also increased the installation difficulty of equipment.
How on the basis of the sealability that guarantees dynamic seal apparatus, prolonging the working life of dynamic seal apparatus, improve the maintainability of dynamic seal apparatus, and then reduce the sealing cost of wheel side speed reducer, is the present technical issues that need to address of those skilled in the art.
Summary of the invention
The purpose of this invention is to provide a kind of dynamic seal apparatus, the long service life of this dynamic seal apparatus, and also easy to maintenance, good sealing effect.Another object of the present invention provides a kind of wheel side speed reducer with above-mentioned dynamic seal apparatus, its sealing reliability height.
For solving the problems of the technologies described above, the invention provides a kind of dynamic seal apparatus, be used to seal first object that relatively moves and the gap between second object, comprise the elastomer of filling described gap, also be provided with between described first object and described second object and support described elastomeric elastic compensating device, so that described elastomer is adjacent to described first object.
Preferably, described elastomer has the groove that holds described elastic compensating device, the size the when size of described groove is in free state less than described elastic compensating device.
Preferably, described elastomer has to the blocked part of the notch bending of described groove, so that stop described elastic compensating device to break away from described groove.
Preferably, the side that described elastomer is adjacent with described first object has hollow part.
Preferably, described elastomer comprises main part and the elasticity coefficient skeleton greater than described main part, and described main part is adjacent with described first object, and described skeleton is adjacent with described second object.
Preferably, be provided with first seal ring between described skeleton and described second object, so that keep sealing between described skeleton and described second object.
Preferably, described skeleton and described main part have integral structure.
The present invention also provides a kind of wheel side speed reducer, comprise fixing-assembly, Runner assembly, the support gland of fixedlying connected with described Runner assembly, and the connecting body that connects described fixing-assembly and described Runner assembly, be provided with above-mentioned each described dynamic seal apparatus between described support gland and the described connecting body, and described elastomer is concentric with described connecting body.
Preferably, described connecting body is threaded with described fixing-assembly, so that adjust described connecting body and described elastomeric mutual alignment.
Preferably, be provided with second seal ring between described connecting body and the described fixing-assembly.
Dynamic seal apparatus provided by the present invention also is provided with the elastic compensating device between first object and second object, this elastic compensating device supports described elastomer, makes elastomer be adjacent to first object, keeps the sealability between first object and second object.Owing to relatively move between first object and second object, the described elastomer and first object in use can wear and tear, after between second object and the elastomer elastic compensating device being set, the elastic compensating device can provide support power to elastomer, still can be adjacent to first object after making the elastomer wearing and tearing, keep sealing between first object and second object, thereby can effectively prolong elastomeric service time.
A kind of preferred embodiment in, described elastomer has the groove that holds the elastic compensating device, and the size of the size of groove when being in free state less than the elastic compensating device.The compression of elastic compensating device is placed in the groove, provides stable support force to elastomer.After wearing and tearing appear in elastomer, and between first object gap appears, the elastic compensating device that is in compressive state has had the space of the state that affranchises, then the elastic compensating device can reduce certain decrement, and it is close to first object to promote elastomer, fill up because the gap that the elastomer wearing and tearing occur makes to continue to keep sealing state between first object and the elastomer.
In another preferred embodiment, described elastomer has hollow part, and hollow part is located at the side that elastomer is close to first object.Because first object and second object can relatively move, and elastomer remains with first object and keeps being close to, so, lasting friction can take place between first object and the elastomer, if the heat that generates can not in time be discharged, to elastomeric working life and sealability all producing bad influence.Therefore, in elastomer, design hollow part, the heat energy that produces between the elastomer and first object is in time discharged by hollow part, further improve elastomeric working life, also improve the sealability of dynamic seal apparatus with a side that contacts of first object.
Description of drawings
Fig. 1 is a kind of structural representation of typical wheel side speed reducer;
Fig. 2 is the partial enlarged drawing of A part among Fig. 1;
Fig. 3 is the partial enlarged drawing of B part among Fig. 1;
Fig. 4 is the structural representation of a kind of embodiment of seal arrangement provided by the present invention;
Fig. 5 is the partial enlarged drawing of C part among Fig. 4;
Fig. 6 is the connection diagram of a kind of embodiment of wheel side speed reducer provided by the present invention;
Fig. 7 is the partial enlarged drawing of D part among Fig. 6.
Embodiment
Core of the present invention provides a kind of dynamic seal apparatus, the long service life of this dynamic seal apparatus, and also easy to maintenance, good sealing effect.Another core of the present invention provides a kind of wheel side speed reducer with above-mentioned dynamic seal apparatus, its sealing reliability height.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 4 and Fig. 5, Fig. 4 is the structural representation of a kind of embodiment of seal arrangement provided by the present invention; Fig. 5 is the partial enlarged drawing of C part among Fig. 4.
Dynamic seal apparatus provided by the present invention is used to have between the first object 2-1 and the second object 3-1 that relatively moves, and is used to seal the gap between the first object 2-1 and the second object 3-1.Wherein, also be provided with elastic compensating device 5 between the first object 2-1 and the second object 3-1, these elastic compensating device 5 support elastic bodies 4 make elastomer 4 be adjacent to the first object 2-1, keep the sealability between the first object 2-1 and the second object 3-1.Owing to relatively move between the first object 2-1 and the second object 3-1, the elastomer 4 and the first object 2-1 in use may wear and tear, after between the second object 3-1 and the elastomer 4 elastic compensating device 5 being set, elastic compensating device 5 provides support power can for elastomer 4, still can be adjacent to the first object 2-1 after making elastomer 4 wearing and tearing, keep sealing between the first object 2-1 and the second object 3-1, thereby can effectively prolong the service time of elastomer 4, also prolong the working life of dynamic seal apparatus.
In a kind of concrete mode of execution, elastomer 4 has the groove 6 that holds elastic compensating device 5, and the size of the size of groove 6 when being in free state less than elastic compensating device 5.5 compressions of elastic compensating device are placed in the groove 6, stable support force are provided for elastomer 4.After wearing and tearing appear in elastomer 4, and between the first object 2-1 gap appears, the elastic compensating device 5 that is in compressive state has had the space of the state that affranchises, then elastic compensating device 5 can reduce certain decrement, and it is close to the first object 2-1 to promote elastomer 4, fill up because the gap that elastomer 4 wearing and tearing occur makes to continue to keep sealing state between the first object 2-1 and the elastomer 4.
Be appreciated that, dynamic seal apparatus also comprises other structure, can be arranged in order as the second object 3-1, elastic compensating device 5, elastomer 4 and the first object 2-1, elasticity compensator 5 also can also can satisfy basic demand of the present invention for elastomer 4 provides support power in this structure.
Further, elastomer 4 can have blocked part 41, blocked part 41 is to the notch bending of groove 6, so that stop elastic compensating device 5 to break away from grooves 6, avoid elastic compensating device 5 pressurizeds and eject groove 6, guarantee elastic compensating device 5 at the first object 2-1 when the second object 3-1 moves, still can remain on groove 6 inside of elastomer 4, improve stable support force, guarantee elastomer 4 energy proper functioning, improve the reliability of dynamic seal apparatus.
Need to prove; dynamic seal apparatus shown in Fig. 5 has two grooves 6; be provided with an elastic compensating device 5 in each groove 6; dynamic seal apparatus includes but are not limited to: this structure in the practical application; pressure condition according to elastomer 4 wear resistances and elastic compensating device 5; dynamic seal apparatus also can have one or more groove 6; two or more elastic compensating devices 5 can be set in each groove 6; form specifically is set should seals the needs setting according to reality, the number of its groove 6 and elastic compensating device 5 should not limit protection scope of the present invention.
In the concrete mode of execution of another kind, elastomer 4 can have hollow part 42, and hollow part 42 is located at the side that elastomer 4 is close to the first object 2-1.Because the first object 2-1 and the second object 3-1 can relatively move, and elastomer 4 remains with the first object 2-1 and keeps being close to, so, lasting friction can take place between the first object 2-1 and the elastomer 4, if the heat energy that generates can not in time be discharged, all can produce bad influence to the working life and the sealability of elastomer 4.Therefore, design hollow part 42 in elastomer 4 and on the surface of contact of the first object 2-1, the heat that produces between the elastomer 4 and the first object 2-1 can in time be discharged by hollow part 42, in the working life of further improving elastomer 4, also improve the sealability of dynamic seal apparatus.
Can do to improve further to above-mentioned dynamic seal apparatus.
In a kind of concrete mode of execution, elastomer 4 can comprise main part 4-1 and skeleton 4-2, and wherein, main part 4-1 is adjacent with the first object 2-1, and skeleton 4-2 is adjacent with the second object 3-1; And the elasticity coefficient of skeleton 4-2 is greater than the elasticity coefficient of main part 4-1.Skeleton 4-2 can be a rigidity, also can be to have necessarily flexiblely, as long as under identical pressure condition, the amount of deformation of skeleton 4-2 just can satisfy requirement of the present invention less than the amount of deformation of main part 4-1.Like this, when the elastic anchorage force of elastic compensating device 5 acts on main part 4-1 and skeleton 4-2, main part 4-1 can produce bigger distortion, skeleton 4-2 produces less distortion, even skeleton 4-2 does not produce distortion, thereby most of amount of deformation of elastic compensating device 5 is compensated to main part 4-1, guarantee to keep excellent sealing between the main part 4-1 and the first object 2-1, improve the sealability of dynamic seal apparatus.
In order further to improve the reliability of sealing, can between the skeleton 4-2 and the second object 3-1, first seal ring 7 be set, to guarantee keeping sealing between the skeleton 4-2 and the second object 3-1.Because the elasticity coefficient of skeleton 4-2 is greater than the elasticity coefficient of main part 4-1, and may reveal between the second object 3-1, so, can between the skeleton 4-2 and the second object 3-1, first seal ring 7 be set, make between the first object 2-1 and the main part 4-1, all can effectively seal between the second object 3-1 and the skeleton 4-2, improve the sealing between the first object 2-1 and the second object 3-1.
Particularly, above-mentioned skeleton 4-2 and main part 4-1 can be integral structure, make between skeleton 4-2 and the main part 4-1 and become as a whole, further improve the sealing between the first object 2-1 and the second object 3-1, when guaranteeing to relatively move between the first object 2-1 and the second object 3-1, leakage phenomenon can not occur, reach better sealing effect.
Please refer to Fig. 6, Fig. 6 is the connection diagram of a kind of embodiment of wheel side speed reducer provided by the present invention.
The present invention also provides a kind of wheel side speed reducer, this wheel side speed reducer comprises fixing-assembly 300, Runner assembly 200, and the connecting body 2 that is connected and fixed assembly 3 00 and Runner assembly 200, be fixedly connected with on the Runner assembly 200 and support gland 3, Runner assembly 200 relative fixed assemblies 300 rotate, between support gland 3 and connecting body 2, above-mentioned dynamic seal apparatus is set, be that the first above-mentioned object 2-1 is the connecting body 2 of wheel side speed reducer, the second object 3-1 is the support gland 3 of wheel side speed reducer, and the elastomer 4 of dynamic seal apparatus is concentric with connecting body 2.Like this, when elastomer 4 rotated with respect to connecting body 2 along with support gland 3, elastomer 4 can remain with connecting body 2 and fit tightly, and guarantees that elastomer 4 can play good seal action.
When elastomer 4 and/or connecting body 2 appearance wearing and tearing, when the gap occurring between elastomer 4 and the connecting body 2, elastic compensating device 5 provides support power can for elastomer 4, make elastomer 4 that deformation take place, fill up the gap between dynamic seal apparatus and the connecting body 2, guarantee can not reveal between connecting body 2 and the support gland 3.
Please refer to Fig. 7, Fig. 7 is the partial enlarged drawing of D part among Fig. 6.
In the concrete mode of execution of another kind, connecting body 2 can be by being threaded with fixing-assembly 300. and being threaded is Placement commonly used, its manufacturing process maturation, and connect reliable and stable. the requirement on machining accuracy to the link of connecting body 2 and fixing-assembly 300 is lower, and installation difficulty is less, it is so also more convenient during assembling., connecting body 2 and fixing-assembly 300 are helped reducing the processing cost of wheel side speed reducer by being threaded, reduce the installation difficulty of wheel side speed reducer.
And, because connecting body 2 and fixing-assembly 300 are by being threaded, the compensating action of the elastic compensating device 5 in dynamic seal apparatus discharges fully, when still having certain clearance between elastomer 4 and the connecting body 2, can be with the direction adjustment of connecting body 2 to fixing-assembly 300, make between connecting body 2 and the elastomer 4 and keep fitting tightly, even can make connecting body 2 compressing elastomers 4, make the elastic compensating device 5 in the elastomer 4 keep maximum compressive state, give elastomer 4 suitable support force, to guarantee that elastomer 4 can keep sealing with connecting body 2, and when between elastomer 4 and connecting body 2, the gap occurring, elastic compensating device 5 still can provide support power, promotes elastomer 4 and fills the gap, guarantees excellent sealing between elastomer 4 and the connecting body 2.
Therefore, after elastomer 4 may wear to a certain degree, can adjust the connecting body 2 and the link position of fixing-assembly 300, make connecting body 2 still can and elastomer 4 between keep excellent sealing.So not only prolong the working life of dynamic seal apparatus, and greatly reduced the maintenance difficulties of wheel side speed reducer, reduced maintenance cost, reduced the complete vehicle fault rate of wheel side speed reducer, improved the working efficiency of wheel side speed reducer.
Further, can be provided with second seal ring 8 between connecting body 2 and the fixing-assembly 300, can effectively seal between connecting body 2 and the fixing-assembly 300 guaranteeing, improve the sealability of wheel side speed reducer, guarantee the wheel side speed reducer high speed operation.
More than dynamic seal apparatus provided by the present invention and wheel side speed reducer with this device are described in detail.Used specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. dynamic seal apparatus, be used to seal first object (2-1) that relatively moves and the gap between second object (3-1), comprise the elastomer (4) of filling described gap, it is characterized in that, also be provided with the elastic compensating device (5) that supports described elastomer (4) between described first object (2-1) and described second object (3-1), so that described elastomer (4) is adjacent to described first object (2-1).
2. dynamic seal apparatus according to claim 1 is characterized in that, described elastomer (4) has the groove (6) that holds described elastic compensating device (5), and the size of described groove (6) is less than the size of described elastic compensating device (5) when being in free state.
3. dynamic seal apparatus according to claim 2 is characterized in that, described elastomer (4) has the blocked part (41) to the notch bending of described groove (6), so that stop described elastic compensating device (5) to break away from described groove (6).
4. dynamic seal apparatus according to claim 3 is characterized in that, the side that described elastomer (4) is adjacent with described first object (2-1) has hollow part (42).
5. according to each described dynamic seal apparatus of claim 1 to 4, it is characterized in that, described elastomer (4) comprises main part (4-1) and the elasticity coefficient skeleton (4-2) greater than described main part (4-1), described main part (4-1) is adjacent with described first object (2-1), and described skeleton (4-2) is adjacent with described second object (3-1).
6. dynamic seal apparatus according to claim 5 is characterized in that, is provided with first seal ring (7) between described skeleton (4-2) and described second object (3-1), so that keep sealing between described skeleton (4-2) and described second object (3-1).
7. dynamic seal apparatus according to claim 6 is characterized in that, described skeleton (4-2) is an integral structure with described main part (4-1).
8. wheel side speed reducer, comprise fixing-assembly (300), Runner assembly (200), the support gland (3) of fixedlying connected with described Runner assembly (200), and the connecting body (2) that connects described fixing-assembly (300) and described Runner assembly (200), it is characterized in that, be provided with as each described dynamic seal apparatus of claim 1 to 7 between described support gland (3) and the described connecting body (2), and described elastomer (4) is concentric with described connecting body (2).
9. wheel side speed reducer according to claim 8 is characterized in that, described connecting body (2) is threaded with described fixing-assembly (300), so that adjust the mutual alignment of described connecting body (2) and described elastomer (4).
10. wheel side speed reducer according to claim 9 is characterized in that, is provided with second seal ring (8) between described connecting body (2) and the described fixing-assembly (300).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910250155 CN101705997A (en) | 2009-11-30 | 2009-11-30 | Dynamic sealing device and wheel side speed reducer provided with same |
| PCT/CN2010/074374 WO2011063645A1 (en) | 2009-11-30 | 2010-06-24 | Dynamic sealing device and wheel-reductor having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910250155 CN101705997A (en) | 2009-11-30 | 2009-11-30 | Dynamic sealing device and wheel side speed reducer provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101705997A true CN101705997A (en) | 2010-05-12 |
Family
ID=42376241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910250155 Pending CN101705997A (en) | 2009-11-30 | 2009-11-30 | Dynamic sealing device and wheel side speed reducer provided with same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101705997A (en) |
| WO (1) | WO2011063645A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6050572A (en) * | 1998-03-09 | 2000-04-18 | Bal Seal Engineering Company, Inc. | Rotary cartridge seals with retainer |
| CN2651526Y (en) * | 2003-04-18 | 2004-10-27 | 杨彦夫 | Sealer of decelerator |
| JP2005299808A (en) * | 2004-04-13 | 2005-10-27 | Nok Corp | Seal for pump |
| JP5045869B2 (en) * | 2005-12-08 | 2012-10-10 | Ｎｏｋ株式会社 | Lip type seal |
| JP4814031B2 (en) * | 2006-09-14 | 2011-11-09 | 三菱電線工業株式会社 | Sealing material |
| CN201487206U (en) * | 2009-08-24 | 2010-05-26 | 杨彦夫 | Sealing device on speed reducer |
| CN201531599U (en) * | 2009-11-30 | 2010-07-21 | 三一重型装备有限公司 | Movable sealing device and hub speed reducer provided therewith |
-
2009
- 2009-11-30 CN CN 200910250155 patent/CN101705997A/en active Pending
-
2010
- 2010-06-24 WO PCT/CN2010/074374 patent/WO2011063645A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011063645A1 (en) | 2011-06-03 |
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Application publication date: 20100512 |