CN107725735A - A kind of mechanical transmissions and packing ring - Google Patents
A kind of mechanical transmissions and packing ring Download PDFInfo
- Publication number
- CN107725735A CN107725735A CN201710820836.XA CN201710820836A CN107725735A CN 107725735 A CN107725735 A CN 107725735A CN 201710820836 A CN201710820836 A CN 201710820836A CN 107725735 A CN107725735 A CN 107725735A
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- Prior art keywords
- packing ring
- elastic layer
- layer
- thickness
- rigid layer
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- 238000012856 packing Methods 0.000 title claims abstract description 126
- 230000009347 mechanical transmission Effects 0.000 title claims abstract description 14
- 238000010276 construction Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000007789 sealing Methods 0.000 description 11
- 238000003754 machining Methods 0.000 description 6
- 210000002421 cell wall Anatomy 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000013536 elastomeric material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
- F16H57/022—Adjustment of gear shafts or bearings
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
- F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft
-
- 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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
- F16H57/022—Adjustment of gear shafts or bearings
- F16H2057/0221—Axial adjustment
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The present invention, which provides a kind of mechanical transmissions and packing ring, the mechanical transmissions, to be included：Axle bed, the axle bed have a through hole；Axostylus axostyle, one end of the axostylus axostyle pass through the through hole, and the axostylus axostyle has the axial trough set along its periphery；And packing ring, the packing ring is set on the axial trough and contacts surface against the axle bed with it, adjustably to limit axial location of the axostylus axostyle relative to the axle bed on the axial direction of the axostylus axostyle.The packing ring includes：First rigid layer, first rigid layer form the contact surface of the packing ring；And elastic layer, the elastic layer are bonded with first rigid layer, the elastic layer has the shape consistent with first rigid layer, and the elastic layer is deformed upon in the presence of external force to change the thickness of the packing ring.
Description
Technical field
The present invention relates to technical field of mechanical transmission, more particularly to a kind of mechanical transmissions and packing ring.
Background technology
In mechanical transmissions, pad can be used for providing axial limiting, sealing, improve the effect such as contact area.Mesh
Preceding pad is mostly the plates made of homogenous material, when for providing position-limiting action, in order to various sizes of knot
Structure is used cooperatively, it is desirable to provide the pad of a variety of different-thickness.
For example, when coordinating with bathtub construction with defined position, the thickness of pad should match with the width of bathtub construction.
But due to the presence of manufacturing tolerance, often there is not being inconsistent for actual size and nominal size, then may be caused by pad
Thickness is more than the width of bathtub construction and causes pad can not be attached in bathtub construction or because the thickness of pad is less than groove
The thickness of shape structure and can not realize well it is spacing or sealing the problem of.
Further, after the transmission device assembled uses a period of time, it is possible that the situation of connection loosing,
Then the pad of matching gap may also occurs between fit structure and can not realize spacing or sealing well originally.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of packing ring, the packing ring is stepped construction, including：
First rigid layer, first rigid layer form the contact surface of the packing ring；With
Elastic layer, the elastic layer are bonded with first rigid layer, and the elastic layer has and first rigid layer
Consistent shape, the elastic layer are deformed upon in the presence of external force to change the thickness of the packing ring.
Preferably, the second rigid layer being bonded with the elastic layer, the first rigid layer and the second rigid layer are further comprised
By the elastic layer sandwiched wherein, to form the contact surface in the both sides of the elastic layer, the second rigid layer have with
The consistent shape of first rigid layer.
Preferably, the packing ring coordinates with axostylus axostyle, and the axostylus axostyle has the axial trough set along its periphery, and the packing ring is arranged
On the axial trough, its axial direction along the axostylus axostyle is interference fitted with the axial trough, the contact surface and the axial trough
Side wall fitting.
Preferably, the thickness of first rigid layer and the second rigid layer is more than or equal to the thickness of the elastic layer.
Preferably, the thickness range of first rigid layer and the second rigid layer is 0.2mm~1.0mm, the elastic layer
Thickness range be 0.2mm~0.8mm.
Preferably, the shrinkage factor of the elastic layer is 20%~50%, and the thickness change scope of the packing ring is 0.04mm
~0.4mm.
Preferably, the shrinkage factor of the elastic layer is 20%~50%,
The ratio of the width of the axial direction along the axostylus axostyle of the thickness of the packing ring and the axial trough is 1.2:1~
1.5:1。
Preferably, the packing ring is c-opening back-up ring, E types split washer or annular gasket.
Preferably, first rigid layer and the second rigid layer are manufactured by metal material, and the elastic layer is by silica gel material
Manufacture.
Another embodiment of the present invention additionally provides a kind of mechanical transmissions, including：
Axle bed, the axle bed have a through hole；
Axostylus axostyle, one end of the axostylus axostyle pass through the through hole, and the axostylus axostyle has the axial trough set along its periphery；With
Packing ring as described above, the packing ring are set on the axial trough and contact surface against the axle bed with it,
Adjustably to limit axial location of the axostylus axostyle relative to the axle bed on the axial direction of the axostylus axostyle.
In an embodiment of the present invention, packing ring is provided as stepped construction, the first rigid layer not changed except thickness
In addition, also have by deformation under external force the adjustable elastic layer of thickness realized.The thickness of elastic layer and
The thickness of one rigid layer together form the thickness of packing ring, then when elastic layer under external force and compressed or from compression shape
State stretches, so that when thickness changes, and the thickness of packing ring also changes therewith.It can then made using the packing ring of the present embodiment
Make in the range of tolerance by the deformation of elastic layer and the thickness of packing ring can be corresponding with the thickness of fit structure, to realize
Good sealing or position-limiting action.In such manner, it is possible to reduce the requirement on machining accuracy of the structure coordinated for packing ring, and reduce system
Cause this.
Further, in the adjustable packing ring of thickness of the present embodiment, the first rigid layer and the second rigid layer are used for shape
Into the contact surface of packing ring.Because the first rigid layer and the second rigid layer have the hardness and anti-wear performance higher than elastic layer,
Therefore its outer surface forms the contact surface of packing ring, for bear external force and provides the contact area with fit structure.In addition, bullet
Property layer do not contacted directly with fit structure, so as to for the first rigid layer and the second rigid layer provide resilient support, so as to reduce the
The possibility that one rigid layer and the second rigid layer deform in the presence of external force, be even broken, to extend the use longevity of packing ring
Life, the sealing for improving packing ring or spacing performance.
The adjustable packing ring of thickness can solve due to the machining tolerance of the part in mechanical transmissions and cause with
The narrowed width for the axial trough that packing ring coordinates, the problem of so as to cause component assembly difficulty, can also solve the processing due to part
Tolerance and cause the width of axial trough to broaden, so as to cause loosening problem of the packing ring in axial trough, so as to improve the suitability of packing ring,
And the part processing precision requirement in mechanical transmissions is reduced, to realize the purpose for reducing manufacturing cost.
Brief description of the drawings
The following drawings only does schematic illustration and explanation to the present invention, not delimit the scope of the invention.
Fig. 1 is the structural representation of the mechanical transmissions of the present invention.
Fig. 2 is the structural representation of the first embodiment of the packing ring of the present invention.
Fig. 3 is the structural representation of the second embodiment of the packing ring of the present invention.
Fig. 4 is the partial schematic diagram of Fig. 1 mechanical transmissions.
Embodiment
In order to which the technical characteristic of invention, purpose and effect are more clearly understood, now control brief description of the drawings is of the invention
Embodiment, in the various figures identical label represent identical part.
Herein, " schematic " expression " serving as example, example or explanation ", will should not be described herein as " showing
Any diagram, the embodiment of meaning property " are construed to a kind of preferred or more advantageous technical scheme.
To make simplified form, part related to the present invention is only schematically show in each figure, and do not represent it
Practical structures as product.In addition, so that simplified form readily appreciates, there is the portion of identical structure or function in some figures
Part, one of those is only symbolically depicted, or only marked one of those.
Herein, " on ", " under ", "front", "rear", "left", "right" etc. are only used for representing relative between relevant portion
Position relationship, and the absolute position of these non-limiting relevant portions.
Herein, " first ", " second " etc. are only used for mutual differentiation, rather than represent significance level and order and
Existing premise etc. each other.
Herein, the limitation in " equal ", " identical " etc. and non-critical mathematics and/or geometry meaning, is also included
It will be appreciated by those skilled in the art that and manufacture or the error for the permission such as using.Unless otherwise indicated, numerical value model herein
The gamut not only included in two end points is enclosed, also includes being contained in some subranges therein.
It can not be realized good due to dimensional tolerance or work fatigue to solve the pad of fixed thickness in the prior art
Good spacing or sealing technical problem, as shown in Fig. 2 the first embodiment of the present invention provides a kind of packing ring 30, wherein padding
Circle 30 is stepped construction, including：
First rigid layer 31, the first rigid layer 31 are used for the contact surface for forming packing ring 30；With
Elastic layer 33, elastic layer 33 are bonded with the first rigid layer 31, and elastic layer 33 has consistent with the first rigid layer 31
Shape, elastic layer 33 are deformed upon in the presence of external force to change the thickness of packing ring 30.
In the present embodiment, packing ring 30 is provided as stepped construction, the first rigid layer 31 not changed except thickness with
Outside, also have by deformation under external force the adjustable elastic layer 33 of thickness realized.The thickness of elastic layer 33 with
The thickness of first rigid layer 31 together form the thickness of packing ring 30, then when elastic layer 33 is compressed under external force or
Stretched from compressive state, so that when thickness changes, the thickness of packing ring 30 also changes therewith.
Wherein elastic layer 33 arbitrary attachment method can be used to be bonded with the first rigid layer 31, such as bond.
By taking structure as shown in Figure 1 as an example, packing ring 30 is used cooperatively with axial trough 21, then when the width of rebate of axial trough 21 is less than
Nominal size and when causing the packing ring 30 to be difficult to pack into the situation of axial trough 21, pass through thickness direction compression washer of the external force along packing ring 30
30, so that elastic layer 33 compresses and reduces the thickness of whole packing ring 30, so that packing ring 30 can be used cooperatively with axial trough 21.
And the packing ring that existing thickness is fixed can not be coordinated with the axial trough, it is necessary to separately change the packing ring of suitable dimension, still
Caused by if this unmatched situation of thickness is due to manufacturing tolerance, necessarily can not in the packing ring of conventional specification
Find the packing ring that can be matched.And the packing ring of the present embodiment is used then to pass through elastic layer 33 in the range of manufacturing tolerance
Deformation and enable the thickness of packing ring 30 corresponding with the width of rebate of axial trough 21, to realize good sealing or position-limiting action.
In such manner, it is possible to reduce the requirement on machining accuracy of the structure coordinated for packing ring 30, and reduce manufacturing cost.
When the width of rebate of axial trough 21 is more than nominal size, according to the characteristics of 30 variable thickness of packing ring of the present embodiment,
Under normal circumstances, the packing ring 30 that axial trough 21 needs to be more than its width of rebate with thickness is used cooperatively, and packing ring 30 can pass through elastic layer
33 stretching, extension and realize the cooperation with axial trough 21, also can enable packing ring 30 for example, by the mode of increase packing ring or pad in addition
Enough realized with axial trough 21 matches.Can and be able to can be reduced to others by the change of its thickness with the packing ring 30 of variable thickness
The thickness requirement of packing ring or pad, to realize packing ring 30 and the in addition cooperation with axial trough 21 together of increased packing ring or pad.
In the case of fit structure loosening occurs after using a period of time, because packing ring 30 has more than axial trough 21
The thickness of width of rebate, therefore be fitted into the initially state compressed with elastic layer 33 of assembling middle washer 30 in axial trough 21, when by
When in the vibration during using or the change of matching relationship and so that gap occur between packing ring 30 and axial trough 21, that is, pad
There is gap between circle 30 and the cell wall of axial trough 21, then cell wall 21 reduces to the extruding force of packing ring 30 and causes elastic layer 33 by pressing
Contracting state stretches, until packing ring 30 contacts the cell wall of axial trough 21, so as to eliminate the close contact of gap, holding and cell wall all the time.
Also, due to the presence of elastic layer 33, elimination action of the packing ring 30 for fit clearance is that dynamic adjusts, so as to realize
Good sealing and position-limiting action.
Further, in the adjustable packing ring 30 of thickness of the present embodiment, the first rigid layer 31 is used to form packing ring 30
Contact surface.Because the first rigid layer 31 has the hardness and anti-wear performance higher than elastic layer 33, therefore its outer surface shape
Into the contact surface of packing ring 30, for bear external force and the contact area with fit structure is provided.Wherein, first rigid layer 31
Outer surface refers to its side surface deviated from elastic layer 33.In addition, elastic layer 33 is bonded with the first rigid layer 31, but not with
Close structure directly to contact, so as to firm for first in the inner surface (side surface being bonded with elastic layer 33) of the first rigid layer 31
Property layer 31 provide resilient support, so as to reduce the possibility that the first rigid layer 31 deforms in the presence of external force, is even broken,
To extend the service life of packing ring 30, the sealing for improving packing ring 30 or spacing performance.
Packing ring 30 can have with any one existing packing ring, pad, back-up ring shape identical shape, according to its shape
And its application scenarios determined are also identical, and wider application scenarios can be applied to because its thickness is adjustable.Example
Such as, packing ring 30 can be c-opening back-up ring, E types split washer, annular gasket etc..
Preferably, the first rigid layer 31 is manufactured by metal material, such as stainless steel, aluminium etc..Elastic layer 33 is by silica gel material
Or elastomeric material manufacture.
As shown in figure 3, the second embodiment of the present invention additionally provides a kind of packing ring 30, it further comprises and elastic layer 33
Second rigid layer 32 of fitting, the first rigid layer 31 and the second rigid layer 32 by the sandwiched of elastic layer 33 wherein, with elastic layer
33 both sides form contact surface, and the second rigid layer 32 has the shape consistent with the first rigid layer 31.
The packing ring of second embodiment has the adjustable effect of thickness as first embodiment, its principle adjusted and
Applicable scene is identical with first embodiment, will not be repeated here.The difference is that in a second embodiment, the first rigidity
By the sandwiched of elastic layer 33 wherein, it is respectively formed contact surface in the both sides of elastic layer 33 to the rigid layer 32 of layer 31 and second, then may be used
Rigid protective is provided for elastic layer 33 so that elastic layer 33 does not contact directly with fit structure, so as to avoid elastic layer from grinding
Damage is destroyed.In addition, the elastic layer 33 between the first rigid layer 31 and the second rigid layer 32 can carry for it simultaneously
For resilient support, to avoid the hard breakdown of the first rigid layer 31 and the second rigid layer 32.
Preferably, in order to increase the contact force in the peripherally direction of packing ring 30, the first rigid layer 31 and the second rigid layer 32
Thickness be more than or equal to elastic layer 33 thickness.So, in the peripheral edge surface of packing ring 30, using the teaching of the invention it is possible to provide the area of rigid support
Much larger than the area that can provide resilient support.Then in the case of the split washer shown in such as Fig. 1 and Fig. 4, packing ring 30 exists
Need to realize the engaging with axial trough 21 for example, by the installation tool of clasp forceps during assembling, pass through the peripheral edge surface in packing ring 30
The upper rigid support for providing larger area can improve the intensity of packing ring 30, make it be not easy to be destroyed.
Similarly, the second rigid layer 31 is manufactured by metal material, such as stainless steel, aluminium etc..
Specifically, the thickness of the first rigid layer 31 and the second rigid layer 32 can be with identical or different, the first rigid layer 31
Thickness range with the second rigid layer 32 is 0.2mm~1.0mm, and the thickness range of elastic layer 33 is 0.2mm~0.8mm.
Generally, in the case of the elasticity of thickness or length adjusts, spring structure can be used to realize mostly, and energy
The minimum thickness of enough spring structures for realizing compression adjustment is also required to be more than 2mm, and this thickness range will cause spacing or sealing
Space shared by structure is larger, causes the waste in the space of whole mechanical driving device.And so as to data above it is known that
The minimum thickness of packing ring 30 can be 0.6mm.That is, packing ring 30 can realize that thickness can adjust in the range of as low as 0.6mm,
So as to save the space shared by spacing or sealing structure.
According to the difference of the material of elastic layer 33, the thickness change scope of packing ring 30 is also different.For example, elastic layer 33 is by receiving
The elastomeric material that shrinkage is 20%~50% manufactures, then the thickness change scope of packing ring 30 is 0.04mm~0.4mm.This change
Scope is fully able to the scale error scope of covering fit structure caused by manufacturing tolerance.
In a preferred embodiment as shown in Figure 4, packing ring 30 coordinates with axostylus axostyle 20, and axostylus axostyle 20 has to be set along its periphery
The axial trough 21 put, packing ring are set on axial trough 21, and its axial direction along axostylus axostyle 20 is interference fitted with axial trough 21, and packing ring 30 connects
Surface is touched to be bonded with the side wall of axial trough 21.
In this example, the thickness direction of packing ring 30 is consistent with the axial direction of axostylus axostyle 20, in order to realize the two-way of thickness
Regulation, the thickness of packing ring 30 is more than the width of rebate (its width on the axial direction of axostylus axostyle 20) of axial trough 21, so as to realize
With the interference fit of axial trough 21.Then for packing ring 30 when being attached in axial trough 21, elastic layer 33 is necessarily in the state compressed.
Further, in order to realize the interference fit of packing ring 30 and axial trough 21, ensure that packing ring 30 can be attached to axial trough 21
In, the ratio of the thickness of packing ring 30 and the width of rebate of axial trough 21 needs to be adjusted according to the material of elastic layer.It is excellent at one
Select in embodiment, elastic layer 33 is by the material manufacture that shrinkage factor is 20%~50%, and the thickness of elastic layer 33 and axial trough 21 are along axle
The ratio of the width of the axial direction of bar 20 is 1.2:1~1.5:1.
In another embodiment as shown in Figure 1 and Figure 4, present invention also offers a kind of mechanical transmissions, including：
Axle bed 10, axle bed 10 have a through hole；
Axostylus axostyle 20, one end of axostylus axostyle 20 pass through through hole, and axostylus axostyle 20 has the axial trough 21 set along its periphery；With
Packing ring 30 as described in various embodiments above, packing ring 30 be set on axial trough 21 and with its contact surface against
Axle bed 10, adjustably to limit axial location of the axostylus axostyle 20 relative to axle bed 10 on the axial direction of axostylus axostyle 20.
In this embodiment, axostylus axostyle 20 passes through axle bed 10, and it realizes the axle for it relative to axle bed 10 by packing ring 30
To the spacing of position, its middle washer 30 coordinates with axial trough 21, to realize that packing ring 30 is integrated with axostylus axostyle 20.It is envisioned that
It can further be realized and contacted by pad 40 between packing ring 30 and axle bed 10.
Preferably, in order to realize the bidirectional modulation of thickness, packing ring 30 is interference fitted with axial trough 21.
The adjustable packing ring 30 of thickness can solve due to pad 40, axle bed 10, axostylus axostyle 20 machining tolerance and cause axle
The narrowed width of groove 21, the problem of so as to cause axostylus axostyle 20 and packing ring 30, axle bed 10 to assemble difficulty, can also solve due to pad
40th, axle bed 10, axostylus axostyle 20 machining tolerance and cause the width of axial trough 21 to broaden, so as to cause packing ring 30 can not be caught in axial trough 21
In loosening problem, so as to improve the suitability of packing ring 30, and reduce pad 40, axle bed 10, axostylus axostyle 20 machining accuracy will
Ask, to realize the purpose for reducing manufacturing cost.
It should be appreciated that although this specification is described according to each embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical scheme in each embodiment may also be suitably combined to form people in the art
The other embodiment that member is appreciated that.
Those listed above is a series of to be described in detail only for feasibility embodiment of the invention specifically
It is bright, and and be not used to limit the scope of the invention, all equivalent embodiments made without departing from skill spirit of the present invention or
Change, such as the combination, segmentation or repetition of feature, should be included in the scope of the protection.
Claims (10)
- A kind of 1. packing ring (30), it is characterised in that the packing ring (30) is stepped construction, including：First rigid layer (31), first rigid layer (31) form the contact surface of the packing ring (30)；WithElastic layer (33), the elastic layer (33) are bonded with first rigid layer (31), and the elastic layer (33) has and institute The consistent shape of the first rigid layer (31) is stated, the elastic layer (33) is deformed upon in the presence of external force to change the packing ring (30) thickness.
- 2. packing ring (30) as claimed in claim 1, it is characterised in that further comprise be bonded with the elastic layer (33) The elastic layer (33) is folded in it by two rigid layers (32), first rigid layer (31) and second rigid layer (32) In, to form the contact surface in the both sides of the elastic layer (33), second rigid layer (32) has and described first The consistent shape of rigid layer (31).
- 3. packing ring (30) as claimed in claim 2, it is characterised in that the packing ring (30) coordinates with axostylus axostyle (20), the axle Bar (20) has the axial trough (21) set along its periphery, and the packing ring (30) is set on the axial trough (21), and it is along the axle The axial direction of bar (20) is interference fitted with the axial trough (21), and the contact surface is bonded with the side wall of the axial trough (21).
- 4. packing ring (30) as claimed in claim 3, it is characterised in that the shrinkage factor of the elastic layer (33) be 20%~ 50%,The ratio of the width of the thickness of the packing ring (30) and the axial direction along the axostylus axostyle (20) of the axial trough (21) is 1.2:1~1.5:1.
- 5. packing ring (30) as claimed in claim 2, it is characterised in that first rigid layer (31) and the second rigid layer (32) Thickness be more than or equal to the elastic layer (33) thickness.
- 6. packing ring (30) as claimed in claim 5, it is characterised in that first rigid layer (31) and the second rigid layer (32) Thickness range be 0.2mm~1.0mm, the thickness range of the elastic layer (33) is 0.2mm~0.8mm.
- 7. packing ring (30) as claimed in claim 6, it is characterised in that the shrinkage factor of the elastic layer (33) be 20%~ 50%, the compressible excursion of thickness of the packing ring (30) is 0.04mm~0.4mm.
- 8. the packing ring (30) as described in any claim in claim 1 to 7, it is characterised in that the packing ring (30) is c-type Split washer, E types split washer or annular gasket.
- 9. the packing ring (30) as described in any claim in claim 2 to 7, it is characterised in that first rigid layer (31) manufactured with second rigid layer (32) by metal material, the elastic layer (33) is manufactured by silica gel material.
- A kind of 10. mechanical transmissions, it is characterised in that including：Axle bed (10), the axle bed (10) have a through hole；Axostylus axostyle (20), one end of the axostylus axostyle (20) pass through the through hole, and the axostylus axostyle (20) has the axle set along its periphery Groove (21)；WithPacking ring (30) as described in any claim in claim 1 to 9, the packing ring (30) are set in the axial trough (21) Surface above and with it is contacted against the axle bed (10), adjustably to be limited on the axial direction of the axostylus axostyle (20) The axostylus axostyle (20) relative to the axle bed (10) axial location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710820836.XA CN107725735A (en) | 2017-09-13 | 2017-09-13 | A kind of mechanical transmissions and packing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710820836.XA CN107725735A (en) | 2017-09-13 | 2017-09-13 | A kind of mechanical transmissions and packing ring |
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| CN107725735A true CN107725735A (en) | 2018-02-23 |
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| CN201710820836.XA Pending CN107725735A (en) | 2017-09-13 | 2017-09-13 | A kind of mechanical transmissions and packing ring |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905017A (en) * | 2019-12-12 | 2020-03-24 | 三一重机有限公司 | Bucket clearance adjusting mechanism and excavator |
| CN110984265A (en) * | 2019-12-17 | 2020-04-10 | 三一重机有限公司 | Gap adjustment pad assembly and excavator |
| CN112360891A (en) * | 2020-11-05 | 2021-02-12 | 杭州正强传动股份有限公司 | Universal joint fork for transmission shaft |
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| CN106996460A (en) * | 2017-04-25 | 2017-08-01 | 扬中市众成管路配件有限公司 | A kind of high temperature resistant Composition spacer of high sealing performance |
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| CN2182712Y (en) * | 1993-11-23 | 1994-11-16 | 廖清江 | Shaft base for sand grinding wheel |
| CN1809693A (en) * | 2003-05-20 | 2006-07-26 | 联邦莫沃尔公司 | Laminated carrier gasket with off-set elastomeric sealing |
| CN2821254Y (en) * | 2005-06-07 | 2006-09-27 | 广晋工业股份有限公司 | Rotary shaft combined fixing structure |
| CN203906780U (en) * | 2014-06-13 | 2014-10-29 | 慈溪市恒立密封材料有限公司 | Multilayer toothed combined sealing gasket |
| CN206361144U (en) * | 2016-12-29 | 2017-07-28 | 上海兴盛密封垫有限公司 | A kind of automatic gear-box controls valve curtain gasket construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110905017A (en) * | 2019-12-12 | 2020-03-24 | 三一重机有限公司 | Bucket clearance adjusting mechanism and excavator |
| CN110984265A (en) * | 2019-12-17 | 2020-04-10 | 三一重机有限公司 | Gap adjustment pad assembly and excavator |
| CN110984265B (en) * | 2019-12-17 | 2022-03-01 | 三一重机有限公司 | Gap adjustment pad assembly and excavator |
| CN112360891A (en) * | 2020-11-05 | 2021-02-12 | 杭州正强传动股份有限公司 | Universal joint fork for transmission shaft |
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