CN209083956U - A kind of normally closed type air-breather and driving bridge for engineering machinery, gearbox, speed reducer - Google Patents
A kind of normally closed type air-breather and driving bridge for engineering machinery, gearbox, speed reducer Download PDFInfo
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- CN209083956U CN209083956U CN201821872583.7U CN201821872583U CN209083956U CN 209083956 U CN209083956 U CN 209083956U CN 201821872583 U CN201821872583 U CN 201821872583U CN 209083956 U CN209083956 U CN 209083956U
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- sealing shroud
- top support
- normally closed
- closed type
- type air
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Abstract
The utility model discloses a kind of normally closed type air-breather and driving bridge for engineering machinery, gearbox, speed reducer, normally closed type air-breather includes ventilation cock body, sealing shroud and card cap；Ventilation cock body is made of pedestal, intermediate and top support；Sealing shroud is sleeved in top support, and card cap is stuck at intermediate along top support, so that top support and sealing shroud are in card cap, pedestal is to be connected at closing inner chamber；Exhaust passage is equipped in ventilation cock body, when there is no pressure in closing inner chamber, sealing shroud fits together with top support, when there is pressure in closing inner chamber, there is gap between sealing shroud and top support, so that the gas in closing inner chamber is vented outwards along the gap between exhaust passage, sealing shroud and top support and the gap between card cap and intermediate.The utility model can ensure that inner cavity and the external world ventilate smooth and extraneous dust, silt and mud particles blocked to enter inner cavity.
Description
Technical field
The utility model relates to a kind of air-breathers, and in particular to a kind of driving bridge for engineering machinery, gearbox and speed reducer
The breather plug used.
Background technique
It is well known that driving bridge for engineering machinery, gearbox and speed reducer are the transmission parts of overall engineering machine, pass through tooth
Wheel set completes power transmitting, and these gear pairs are placed among a shell, in the cavity in a relative closure, because
The rotation for a long time of gear pair high speed will cause the fever of the lubricating oil inside cavity, and along with the generation of some gases, cavity
Interior pressure rise, it is therefore necessary to guarantee the connection of the inner and outer boundary's atmosphere of cavity.
Engineer machinery operation bad environments, among dust, silt and mud particles operating environment, therefore should
Guarantee that drive axle, gearbox are connected to inside speed reducer cavity with the fine of ambient atmosphere, while ensuring again extraneous a large amount of
Dust, silt and mud particles not can enter inside cavity.
In prior art, conventional ventilation device includes ventilation cock body, spring, spring base, circular cap.It is set on ventilation cock body
There is through-hole, spring base is hierarchic structure, and the small stair axis of spring base is inserted into spring bores and is put into togerther in breather plug body, makes
Circular cap, is then pressed on outer six side of ventilation cock body by the another side of spring base and the hole plane contact of ventilation cock body.
Above-mentioned traditional breather plug has the following deficiencies: since spring has pre-pressing force, and drives in complete machine work
Bridge, gearbox and speed reducer closing inner chamber can generate certain pressure, this pressure and initial tension of spring superposition counter can push away circular cap,
The circular cap of breather plug, which will appear, after complete machine works long hours falls off.The other end of spring is only pressed in circular cap, spring
There is no real radial positionings, will result in spring bias in this way and cause spring base and breather plug contact level poorly sealed
It is real.The oil liquid that the disadvantages described above of traditional vent plug will cause in drive axle, gearbox and speed reducer closing inner chamber is emerged outward, outside
Dust, silt and the mud particles on boundary can also enter closing inner chamber and pollute oil liquid, and blocking breather plug causes breather plug to fail, and can
Influence the transmission performance of drive axle, gearbox and reducer gear and the sealing performance of oil sealing.
Summary of the invention
The utility model provides a kind of normally closed type ventilation dress applied in driving bridge for engineering machinery, gearbox, speed reducer
It sets, can ensure that inner cavity and the external world ventilate smooth and extraneous dust, silt and mud particles blocked to enter inner cavity.
The utility model is realized by following technical scheme:
A kind of normally closed type air-breather, including ventilation cock body, sealing shroud and card cap；The ventilation cock body is by pedestal, centre
Body and top support composition；The sealing shroud is sleeved in top support, and the card cap is stuck at intermediate along top support,
So that top support and sealing shroud are in card cap, the pedestal is to be connected at closing inner chamber；It is equipped in ventilation cock body
Exhaust passage, when not having pressure in closing inner chamber, sealing shroud fits together with top support, when there is pressure in closing inner chamber
When, there is gap between sealing shroud and top support, so that the gas in closing inner chamber is along exhaust passage, sealing shroud and top branch
The gap between gap and card cap and intermediate between seat is vented outwards.
Further, the intermediate is polyhedron.
Further, polyhedron is outer hexahedron.
Further, the pedestal is that side has externally threaded rotary table.
Further, the top support is five-part form cylindrical body, and two slots are symmetrically arranged on the outside of third section cylindrical body；Institute
Stating exhaust passage is the hole axially extended from base end face, and the other end in the hole does not penetrate the 4th section of cylindrical body, hole with
Symmetrical two slots connect on the outside of third section cylindrical body.
Further, the sealing shroud is elastomer, and section is for " L " type annular shape；The lower part of the sealing shroud is circle
Cylindricality, inner hole wall meeting lock ring is on first segment cylindrical outer surface；The top of the sealing shroud is cone, and upper part is formed
Lip lock ring is on the 4th section of cylindrical outer surface.
Further, the pedestal, intermediate and top integrally casting shaping.
A kind of driving bridge for engineering machinery, including normally closed type air-breather above-mentioned.
A kind of construction machinery gear box, including normally closed type air-breather above-mentioned.
A kind of engineering machinery speed reducer, including normally closed type air-breather above-mentioned.
The utility model the utility model has the advantages that
The utility model utilizes above structure, keeps drive axle, gearbox and speed reducer inner cavity and extraneous holding ventilation smooth,
And sealed reliable, it is poorly sealed to efficiently solve traditional vent plug, easily blocking failure, the outside bleed in inner cavity, extraneous dust,
Silt and mud particles can also enter closing inner chamber and pollute oil liquid, and then influence the transmission performance of gear and the leakproofness of oil sealing
Energy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the inner cavity and external world's venting process schematic diagram of the utility model；
Fig. 3 is the structural schematic diagram of ventilation cock body in the utility model；
Fig. 4 is the cross-sectional view of the utility model ventilation cock body；
Fig. 5 is the structural schematic diagram of sealing shroud in the utility model；
Fig. 6 is the structural schematic diagram of circular cap in the utility model.
Wherein, include: 1 in Fig. 1, ventilation cock body, 2, sealing shroud, 3, circular cap, 4, exhaust passage, 11, pedestal, 12, in
Mesosome, 13, top support.
Specific embodiment
To keep the purposes, technical schemes and advantages of the utility model implementation clearer, below in conjunction with the utility model
Attached drawing in embodiment, is further described in more detail the technical scheme in the embodiment of the utility model.In the accompanying drawings, from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Described reality
Applying example is the utility model a part of the embodiment, instead of all the embodiments.Below with reference to the embodiment of attached drawing description
It is exemplary, it is intended to for explaining the utility model, and should not be understood as limiting the present invention.It is practical new based on this
Embodiment in type, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, fall within the protection scope of the utility model.The embodiments of the present invention are described in detail with reference to the accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of normally closed type air-breather, including ventilation cock body 1, sealing shroud 2 and card cap 3；Breather plug
Body 1 is made of pedestal 11, intermediate 12 and top support 13；
Sealing shroud 2 is sleeved in top support 13, and card cap 3 is stuck in 12 at intermediate along top support 13, so that top
Support 13 and sealing shroud 2 are in card cap 3, and pedestal 11 is to be connected at closing inner chamber；
It is equipped with exhaust passage 4 in ventilation cock body 1, when there is no pressure in closing inner chamber, sealing shroud 2 and top support 13
It fits together, when there is pressure in closing inner chamber, has gap between sealing shroud 2 and top support 13, so that in closing inner chamber
Gas along between exhaust passage 4, sealing shroud 2 and top support 13 gap and card cap 3 and intermediate 12 between
Gap is vented outwards.
It should be noted that 13 integrally casting shaping of pedestal 11, intermediate 12 and top support；Certainly, pedestal 11, centre
Body 12 can also be mutually integrally welded with top support 13.
The preferred embodiment in above-described embodiment about ventilation cock body is given below:
As shown in Figure 3, Figure 4, top support 13 is five-part form cylindrical body, is symmetrically arranged with two on the outside of third section cylindrical body
Slot；Exhaust passage 4 is the hole axially extended from base end face, and the other end in the hole does not penetrate the 4th section of cylindrical body, hole
It connects with two slots symmetrical on the outside of third section cylindrical body.
With continued reference to shown in Fig. 3, Fig. 4, intermediate is polyhedron.Preferably, polyhedron is outer hexahedron.Pedestal is side
There is externally threaded rotary table in face.
It should be noted that circular cap is packed on the ventilation outer hexahedron of cock body 1, leads to as shown in fig. 6, card cap 3 is circular cap
Crossing ventilation 1 six seamed edges of outer hexahedron of cock body makes circular cap deformation play the role of fixed circular cap.
The preferred embodiment in above-described embodiment about sealing shroud is given below:
As shown in figure 5, sealing shroud is elastomer, section is for " L " type annular shape；The lower part of sealing shroud is cylinder,
Its inner hole wall meeting lock ring is on first segment cylindrical outer surface；The top of sealing shroud is cone, and upper part forms lip lock ring
On the 4th section of cylindrical outer surface.
It should be noted that the material of sealing shroud is rubber.
The course of work:
The cylindrical end of sealing shroud 2 is inserted in ventilation 1 first segment cylindrical outer surface of cock body, 2 cylindrical end inner hole of sealing shroud
On ventilation 1 first segment cylindrical outer surface of cock body, 2 conical end top of sealing shroud forms lip meeting lock ring and is ventilating wall meeting lock ring
On the 4th section of cylindrical outer surface of cock body 1.Circular cap is packed on the ventilation outer hexahedron of cock body 1, outer six sides of ventilation cock body 1 are passed through
Six seamed edges of body make circular cap deformation play the role of fixed circular cap.
When inner cavity does not have pressure, the lip meeting lock ring that 2 conical end top of sealing shroud is formed is in ventilation 1 cylinder appearance of cock body
On face, make inner cavity and extraneous sealed reliable；When there is pressure in inner cavity, lip that 2 conical end top of sealing shroud is formed will with it is logical
1 cylindrical outer surface of vent plug body is opened, and keeps inner cavity and extraneous holding ventilation smooth.It is poorly sealed that traditional vent plug can effectively be solved,
Easily blocking failure, the outside bleed in inner cavity, extraneous dust, silt and mud particles can also enter closing inner chamber and pollute oil liquid, into
And influence the transmission performance of gear and the sealing performance of oil sealing.
The utility model also provides a kind of driving bridge for engineering machinery, including normally closed type air-breather above-mentioned.
The utility model also provides a kind of construction machinery gear box, including normally closed type air-breather above-mentioned.
The utility model also provides a kind of engineering machinery speed reducer, including normally closed type air-breather above-mentioned.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (10)
1. a kind of normally closed type air-breather, it is characterised in that: including ventilation cock body, sealing shroud and card cap；The ventilation cock body by
Pedestal, intermediate and top support composition；
The sealing shroud is sleeved in top support, and the card cap is stuck at intermediate along top support, so that top support
It is in card cap with sealing shroud, the pedestal is to be connected at closing inner chamber；
It is equipped with exhaust passage in ventilation cock body, when not having pressure in closing inner chamber, sealing shroud and top support are fitted in one
It rises, when there is pressure in closing inner chamber, there is gap between sealing shroud and top support, so that the gas in closing inner chamber is along row
The gap between gap and card cap and intermediate between gas channel, sealing shroud and top support is vented outwards.
2. a kind of normally closed type air-breather according to claim 1, it is characterised in that: the intermediate is polyhedron.
3. a kind of normally closed type air-breather according to claim 2, it is characterised in that: polyhedron is outer hexahedron.
4. a kind of normally closed type air-breather according to claim 1, it is characterised in that: the pedestal is that side has external screw thread
Rotary table.
5. a kind of normally closed type air-breather according to claim 1, it is characterised in that: the top support is five-part form circle
Cylinder is symmetrically arranged with two slots on the outside of third section cylindrical body；
The exhaust passage is the hole axially extended from base end face, and the other end in the hole does not penetrate the 4th Duan Yuanzhu
Body, hole connect with two slots symmetrical on the outside of third section cylindrical body.
6. a kind of normally closed type air-breather according to claim 5, it is characterised in that: the sealing shroud is elastomer,
Section is for " L " type annular shape；
The lower part of the sealing shroud is cylinder, and inner hole wall meeting lock ring is on first segment cylindrical outer surface；The sealing shroud
Top be cone, upper part formed lip lock ring on the 4th section of cylindrical outer surface.
7. a kind of normally closed type air-breather according to claim 5, it is characterised in that: the pedestal, intermediate and top
Integrally casting shaping.
8. a kind of driving bridge for engineering machinery, it is characterised in that: including the described in any item normally closed type ventilation dresses of claim 1 to 7
It sets.
9. a kind of construction machinery gear box, it is characterised in that: including the described in any item normally closed type ventilation dresses of claim 1 to 7
It sets.
10. a kind of engineering machinery speed reducer, it is characterised in that: including the described in any item normally closed type ventilation dresses of claim 1 to 7
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821872583.7U CN209083956U (en) | 2018-11-14 | 2018-11-14 | A kind of normally closed type air-breather and driving bridge for engineering machinery, gearbox, speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821872583.7U CN209083956U (en) | 2018-11-14 | 2018-11-14 | A kind of normally closed type air-breather and driving bridge for engineering machinery, gearbox, speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209083956U true CN209083956U (en) | 2019-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821872583.7U Active CN209083956U (en) | 2018-11-14 | 2018-11-14 | A kind of normally closed type air-breather and driving bridge for engineering machinery, gearbox, speed reducer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719602A (en) * | 2021-07-13 | 2021-11-30 | 东风汽车集团股份有限公司 | Gearbox air breather and gearbox |
-
2018
- 2018-11-14 CN CN201821872583.7U patent/CN209083956U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719602A (en) * | 2021-07-13 | 2021-11-30 | 东风汽车集团股份有限公司 | Gearbox air breather and gearbox |
| CN113719602B (en) * | 2021-07-13 | 2024-01-16 | 东风汽车集团股份有限公司 | Gearbox ventilation device and gearbox |
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