CN209041344U - Sealing structure and holdback for holdback - Google Patents
Sealing structure and holdback for holdback Download PDFInfo
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- CN209041344U CN209041344U CN201822083807.2U CN201822083807U CN209041344U CN 209041344 U CN209041344 U CN 209041344U CN 201822083807 U CN201822083807 U CN 201822083807U CN 209041344 U CN209041344 U CN 209041344U
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- holdback
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- inner ring
- sealing structure
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Abstract
This application discloses a kind of sealing structure for holdback, holdback includes inner ring, outer ring and side plate, is provided with oil sealing in the first seal groove of side plate, is respectively arranged with sealing structure in axial one end of holdback or in the axial ends of holdback；Wherein, sealing structure includes: outer cover, is cooperated with inner ring concentric gap, and be detachably connectable to corresponding end side plate it is axially external, be provided with the second seal groove on the inside of outer cover；V-shaped seal ring is arranged in the second seal groove, including cyclic annular fixed part and annular sealing portion, and cyclic annular fixed part is for being set in inner ring, and annular sealing portion is for being sealed outer cover and the gap at inner ring clearance fit.Disclosed herein as well is a kind of holdbacks.The application is for that can play the role of axial seal, to prevent the entrance of dust by being sealed in the second seal groove inner seal ring to outer cover and the gap at inner ring clearance fit in the sealing structure and holdback of holdback.
Description
Technical field
The application belongs to backstop design field, in particular to a kind of sealing structure and check for holdback
Device.
Background technique
It is on transmission device to be provided with holdback more, it is reversed with preventing.Currently, to alleviate the abrasion between holdback component
Phenomenon is mostly arranged hermetic oil seal at place easy to wear, and fills lubricating oil；But part holdback is more serious in dust
It is used under bad working environments, dust is easy to be extruded at oil sealing, and oil sealing is caused to be worn, and shortens the working life, and not only increases in this way
Use cost, and increase the repair and maintenance time of equipment.In addition, there is certain interference during installation in hermetic oil seal
Amount, is usually tapped down in installation space using soft tool, and when disassembly is easy to dismount badly.
Summary of the invention
There is provided a kind of sealing structures and holdback for holdback for the purpose of the application, to solve above-mentioned at least one
The problem of aspect.
In a first aspect, the holdback includes coaxial arrangement this application discloses a kind of sealing structure for holdback
Inner ring and outer ring, and the side plate of the inner ring axial ends is set, is formed in the side plate radially inner side first close
It is provided with oil sealing in sealing groove, axial one end of the holdback is provided with the sealing structure or in the axial direction of the holdback
Both ends are respectively arranged with the sealing structure, wherein the sealing structure includes:
Outer cover annular in shape, the outer cover and the inner ring concentric gap cooperate, and are detachably connectable to corresponding end
The side plate it is axially external, the radially inner side of the outer cover is provided with cricoid second seal groove, second seal groove with
First seal groove is coaxial and is connected to；
Sealing ring, the sealing ring are V-shaped seal ring, including for constituting V-shaped and integrally formed cyclic annular fixed part
And annular sealing portion, the V-shaped seal ring are arranged in second seal groove, V-type opening is outside towards the inner ring diameter
Side, the ring-type fixed part are used for for being set in the inner ring, the annular sealing portion to the outer cover and the inner ring
Gap at clearance fit is sealed.
According at least one embodiment of the application, the sealing structure for holdback further include:
Oil filler point, the oil filler point, which runs through to be provided with outside described, to be covered, and is connected to second seal groove；
Pump nozzle, the pump nozzle adaptation are arranged in the oil filler point.
According at least one embodiment of the application, the axis of the oil filler point is radially extended and is passed through along the inner ring
The inner ring axle center.
According at least one embodiment of the application, on the axis direction of the inner ring, the oil filler point is located at institute
It states between sealing ring and the oil sealing.
According at least one embodiment of the application, the quantity of the oil filler point is at least two, and is even number, until
Few two oil filler points are to be uniformly distributed in the circumferencial direction of the outer cover.
According at least one embodiment of the application, it is coaxially arranged with annular boss in the radially inner side of the side plate,
The annular boss is located at the oil sealing backwards to the side of the outer cover of the same end, and with the inner ring clearance fit, it is described
Removal hole is provided in the axial direction on annular boss.
According at least one embodiment of the application, the removal hole is unthreaded hole or threaded hole.
According at least one embodiment of the application, the quantity of the removal hole is at least two, described at least two
Removal hole is to be uniformly distributed in the circumferencial direction of the annular boss.
According at least one embodiment of the application, the sealing structure for holdback further include:
Stop collar, the stop collar are set in the inner ring between the sealing ring of same end and the oil sealing
On, it is defined for the axial position to the sealing ring.
Second aspect, this application discloses a kind of holdback, the inner ring and outer ring including coaxial arrangement, and be arranged in institute
The side plate for stating inner ring axial ends is provided with oil sealing in the first seal groove that the side plate radially inner side is formed, described inverse
Only axial one end of device or the axial ends in the holdback are respectively arranged with sealing structure as described in any one of the above embodiments.
At least there are following advantageous effects in the application:
The application is used in sealing structure and the holdback of holdback, can be by external in the second seal groove inner seal ring
Lid is sealed with the gap at inner ring clearance fit, plays the role of axial seal, to prevent the entrance of dust.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the holdback that the application has sealing structure；
Fig. 2 is structural schematic diagram of the application for sealing ring in the sealing structure and holdback of holdback；
Wherein:
1- side plate；The first seal groove of 11-；12- removal hole；
2- pump nozzle；
3- outer cover；31- oil filler point；The second seal groove of 32-；
4- sealing ring；41- ring-type fixed part；42- annular sealing portion；
5- oil sealing；6- inner ring；The outer ring 7-；8- assembly.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application implementation clearer, below in conjunction in the embodiment of the present application
Attached drawing, technical solutions in the embodiments of the present application is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the application
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
In explanation the application, and it should not be understood as the limitation to the application.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall in the protection scope of this application.Under
Face is described in detail embodiments herein in conjunction with attached drawing.
In the description of the present application, it is to be understood that term " axial direction ", " radial direction ", " end face ", " transverse direction ", " vertical ",
The orientation or positional relationship of the instructions such as "inner" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing this Shen
It is please described with simplified, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation
Construction and operation, therefore should not be understood as the limitation to the application protection scope.
1 and Fig. 2 does further in detail the sealing structure and holdback for holdback of the application with reference to the accompanying drawing
Explanation.
In a first aspect, this application discloses a kind of sealing structures for holdback.
It should be noted that backstop compatible with the application sealing structure can be currently known it is a variety of suitable
The holdback of conjunction；In general, the holdback may include inner ring 6 and the outer ring 7 of coaxial arrangement, and setting in inner ring 6 axial two
The side plate 1 at end；Further, it is formed with the first seal groove 11 in 1 radially inner side of side plate, is provided with oil sealing in the first seal groove 11
5 (being ordinarily selected to outside framework oil seal)；In addition, holdback can also include that the assembly of inner ring 6 and outer ring 7 is arranged in (according to inverse
The only difference of device structure, and wedging body, voussoir can be etc.)；Holdback specific structure is not being repeated again this time.
In some alternative embodiments, the sealing structure of the application, which can be adapted to, is arranged in axial the one of holdback
End, is only sealed axial one end of holdback；It, can also be axial the two of holdback in other optional embodiments
End is respectively arranged with sealing structure, so that the axial ends to holdback is sealed simultaneously.
Specifically, the sealing structure of the application may include outer cover 3 and sealing ring 4.
In some alternative embodiments, outer cover 3 is annular in shape, and coaxial sleeve is arranged on inner ring 6, and is between inner ring 6
Clearance fit；Further, it is possible to which mode is bolted, it is detachably connectable to the axially external of the side plate 1 of corresponding end.
In addition, the radially inner side in outer cover 3 offers cricoid second seal groove 32, the second seal groove 32 and the first sealing
Slot 11 is coaxial and is connected to.Specifically, shown in Figure 1, it is recessed inwardly to form second in a part of structure of the radially inner side of outer cover 3
Seal groove 32, remaining non-depressed section constitutes annular boss with respect to the second seal groove 32, between being between the annular boss and inner ring 6
Gap cooperation.
In the sealing structure of the application, sealing ring 4 is coaxially set on inner ring 6, and is arranged in the second seal groove 32, is used
It is sealed in the gap (gap i.e. between the annular boss of outer cover 3 and inner ring 6) at 6 clearance fit of outer cover 3 and inner ring.
Specifically, sealing ring 4 is V-shaped seal ring, may include for constituting V-shaped and integrally formed cyclic annular fixed part
41 and annular sealing portion 42；V-shaped seal ring 4 is arranged in the second seal groove 32, and V-type is open towards 6 radial outside of inner ring,
In, V-shaped seal ring passes through cyclic annular fixed part 41 and is set on inner ring 6, by annular sealing portion 42 come between outer cover 3 and inner ring 6
Gap at gap cooperation is sealed.
The application is used for the sealing structure of holdback, can pass through the outer cover in the second seal groove inner seal ring to holdback
It is sealed with the gap at inner ring clearance fit, plays the role of axial seal, to prevent the entrance of dust；Also, this Shen
Please sealing structure adaptation holdback in the process of running, axially there is being certain moving in outer ring 7 with respect to inner ring 6；And the application
Sealing ring 4 cyclic annular fixed part 41 and annular sealing portion 42 there is a predetermined included angle A in its natural state, can be with after installation
So that predetermined included angle A reduces, so can guarantee the axis of sealing 42 Yu 3 annular boss of outer cover under the action of its screen resilience
It is bonded always to side wall, so that sealing ring 4 can guarantee sealing performance of holdback during moving.
Further, the sealing structure of the application can also include oil filler point 31 and pump nozzle 2.
Oil filler point 31, which runs through, to be provided on outer cover 3, and is connected to the second seal groove 32, accordingly, the adaptation setting of pump nozzle 2
In oil filler point 31.
In some alternative embodiments, the axis of oil filler point 31 radially extends along inner ring 6 and passes through 6 axle center of inner ring；
In addition, oil filler point 31 is between sealing ring 4 and oil sealing 5 on the axis direction of inner ring 6.Further, it is preferable to oil filler point 31
Quantity be at least two, and be even number, at least two oil filler points 31 are to be uniformly distributed in the circumferencial direction of outer cover 3.
The installation of the holdback of the application sealing structure adaptation is generally horizontally mounted, is vertically-mounted, tilting 45 degree of installations.
It is setting by above-mentioned oil filler point 31 and 2 structure of pump nozzle, it is ensured that always there is a pump nozzle 2 to exist when holdback use state
Top, a pump nozzle 2 is in lower section；When oiling, from 2 oiling of top pump nozzle, lower section pump nozzle 2 is opened, when lower section pump nozzle 2
When having glycerol extrusion, illustrate that inside fills with, stops oiling.
Further, it in the sealing structure of the application, can also be coaxially arranged in the radially inner side of side plate 1 cyclic annular convex
Platform；The annular boss is located at oil sealing 5 backwards to the side of the outer cover 3 of the same end, and with 6 clearance fit of inner ring, edge on annular boss
Removal hole 12 axially is offered, for dismantling oil sealing 5.
In some alternative embodiments, removal hole 12 can be unthreaded hole or threaded hole.The benefit of unthreaded hole is can to do
It is relatively larger, so that more convenient beat (disassembly oil sealing 5).Threaded hole can be used for installing other component, remove other portions
It can be used for dismantling oil sealing after part, threaded hole, which is advantageous in that, can squeeze out oil sealing by threading force, not need to beat.
Further, the quantity of removal hole 12 is at least two, and at least two removal holes 12 are in the circumference side of annular boss
To being to be uniformly distributed.In the present embodiment, the quantity of removal hole 12 is 4, and 4 uniformly distributed removal holes 12 can guarantee that oil sealing 5 is torn open
The stress of circumferencial direction is horizontal when unloading, with easy to disassemble.
Further, in the sealing structure of the application, can also be between the sealing ring 4 and oil sealing 5 of same end in
Be arranged stop collar on circle 6, stop collar against corresponding end sealing ring 4, to be defined to the axial position of sealing ring 4, with
Prevent the axial moving of sealing ring 4.
Second aspect, this application discloses a kind of holdbacks；The holdback may include inner ring 6 and the outer ring of coaxial arrangement
7, and the side plate 1 of 6 axial ends of inner ring is set, oil is provided in the first seal groove 11 that 1 radially inner side of side plate is formed
Envelope 5.
It further, can axially one end or axially both ends are respectively set in the holdback of the application
The sealing structure stated.To by close to outer cover and the gap progress at inner ring clearance fit in the second seal groove inner seal ring
Envelope, plays the role of the axial seal to holdback, to prevent the entrance of dust
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
Cover within the scope of protection of this application.Therefore, the protection scope of the application should be with the scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of sealing structure for holdback, the holdback includes inner ring (6) and outer ring (7) of coaxial arrangement, and
Side plate (1) in the inner ring (6) axial ends is set, in the first seal groove (11) that the side plate (1) radially inner side is formed
Inside it is provided with oil sealing (5), which is characterized in that axial one end of the holdback is provided with the sealing structure or described inverse
Only the axial ends of device is respectively arranged with the sealing structure, wherein the sealing structure includes:
Outer cover (3) annular in shape, the outer cover (3) and the inner ring (6) concentric gap cooperate, and are detachably connectable to correspond to
End the side plate (1) it is axially external, the radially inner side of the outer cover (3) is provided with cricoid second seal groove (32), institute
It is coaxial with first seal groove (11) and be connected to state the second seal groove (32)；
Sealing ring (4), the sealing ring (4) are V-shaped seal ring (4), including for constituting V-shaped and integrally formed ring-type admittedly
Determine portion (41) and annular sealing portion (42), V-shaped seal ring (4) setting is in second seal groove (32), V-type opening
Towards the inner ring (6) radial outside, for the ring-type fixed part (41) for being set in the inner ring (6), the ring-type is close
Envelope portion (42) is for being sealed the outer cover (3) and the gap at the inner ring (6) clearance fit.
2. the sealing structure according to claim 1 for holdback, which is characterized in that further include:
Oil filler point (31), the oil filler point (31), which is run through, to be provided on the outer cover (3), and even with second seal groove (32)
It is logical；
Pump nozzle (2), pump nozzle (2) adaptation are arranged in the oil filler point (31).
3. the sealing structure according to claim 2 for holdback, which is characterized in that the axis of the oil filler point (31)
It is radially extended along the inner ring (6) and passes through the inner ring (6) axle center.
4. the sealing structure according to claim 3 for holdback, which is characterized in that the axis in the inner ring (6)
On direction, the oil filler point (31) is between the sealing ring (4) and the oil sealing (5).
5. the sealing structure according to claim 3 or 4 for holdback, which is characterized in that the oil filler point (31)
Quantity is at least two, and is even number, and at least two oil filler points (31) are uniform in the circumferencial direction of the outer cover (3)
Distribution.
6. the sealing structure according to claim 1 for holdback, which is characterized in that the radial direction in the side plate (1)
Inner coaxial is provided with annular boss, the annular boss be located at the oil sealing (5) backwards to the same end the outer cover (3) one
Side, and with the inner ring (6) clearance fit, be provided in the axial direction with removal hole (12) on the annular boss.
7. the sealing structure according to claim 6 for holdback, which is characterized in that the removal hole (12) is unthreaded hole
Or threaded hole.
8. the sealing structure according to claim 6 for holdback, which is characterized in that the quantity of the removal hole (12)
It is at least two, at least two removal holes (12) are to be uniformly distributed in the circumferencial direction of the annular boss.
9. the sealing structure according to claim 1 for holdback, which is characterized in that further include:
Stop collar, the stop collar are set in the inner ring between the sealing ring (4) of same end and the oil sealing (5)
(6) on, for being defined to the axial position of the sealing ring (4).
10. a kind of holdback, inner ring (6) and outer ring (7) including coaxial arrangement, and setting are in the inner ring (6) axial two
The side plate (1) at end is provided with oil sealing (5) in the first seal groove (11) that the side plate (1) radially inner side is formed, and feature exists
It is respectively set in, axial one end in the holdback or the axial ends in the holdback any just like claim 1-9
Sealing structure described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822083807.2U CN209041344U (en) | 2018-12-12 | 2018-12-12 | Sealing structure and holdback for holdback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822083807.2U CN209041344U (en) | 2018-12-12 | 2018-12-12 | Sealing structure and holdback for holdback |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209041344U true CN209041344U (en) | 2019-06-28 |
Family
ID=67044256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822083807.2U Active CN209041344U (en) | 2018-12-12 | 2018-12-12 | Sealing structure and holdback for holdback |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209041344U (en) |
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2018
- 2018-12-12 CN CN201822083807.2U patent/CN209041344U/en active Active
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