CN104129381B - air assistor - Google Patents
air assistor Download PDFInfo
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- CN104129381B CN104129381B CN201410328369.5A CN201410328369A CN104129381B CN 104129381 B CN104129381 B CN 104129381B CN 201410328369 A CN201410328369 A CN 201410328369A CN 104129381 B CN104129381 B CN 104129381B
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Abstract
The invention discloses a kind of air assistor, comprise cylinder, hydraulic ram and oil storage cup, hydraulic ram comprises cylinder body, hydraulic piston and piston rod, cylinder body is provided with oil feed groove, the leading section cover of hydraulic piston has leather cup, described cylinder body is aluminum alloy cylinder body, hydraulic piston is aluminum alloy hydraulic piston, cavity is provided with in hydraulic piston, the aft end face of hydraulic piston is provided with the opening be communicated with cavity, hydraulic piston is axially provided with interior oilhole, the two ends of interior oilhole respectively with cavity and the cylinder body chamber that is positioned on front side of hydraulic piston, one end of piston rod from opening stretch in cavity with hydraulic piston floating connection, on the excircle of hydraulic piston, radial direction offers multiple tracks circular radiating groove, wherein offer multiple fuel return hole in one circular radiating groove, fuel return hole is communicated with cavity, the bottom of oil feed groove is oblique is provided with fuel feed hole, one end of fuel feed hole is communicated with oil feed groove, the other end and cylinder body chamber, one end of fuel feed hole and cylinder body chamber and piston rod are positioned at the homonymy of hydraulic piston.The invention discloses air assistor and have that structure is simple, the quick and advantages such as long service life of light and flexible, braking.
Description
Technical field
The present invention relates to technical field of engineering machinery, is specifically a kind of air assistor.
Background technology
Air assistor links together with brake assembly pump, and object utilizes the difference of pressure of air to increase braking force, alleviates the foot-operated force intensity of people, improve braking effect.
The air assistor of prior art comprises cylinder, hydraulic ram and oil storage cup, hydraulic ram comprises cylinder body, hydraulic piston and piston rod, cylinder body is provided with oil feed groove, the leading section cover of hydraulic piston has leather cup, cylinder body is fabricated from iron, hydraulic piston and piston rod one-body molded by iron, hydraulic piston is arranged at the inwall of cylinder body, the junction of oil storage cup and cylinder body is provided with driving lever, driving lever is oil storage cup is communicated with valve spool with hydraulic actuating cylinder, the leading section of hydraulic piston is provided with the flange coordinated with driving lever, when hydraulic piston compresses, driving lever is by hydraulic actuating cylinder communication valve door termination, when hydraulic piston is return, hydraulic actuating cylinder is communicated with valve open by driving lever, hydraulic oil can enter in cylinder body.Adopting the air assistor of this structure design to there is following shortcoming: one, cylinder body is made for there being iron, and hydraulic piston and piston rod have iron one-body molded, making hydraulic ram seem very heavy, the heaviness of hydraulic ram will cause whole air assistor to seem heavy; Two, hydraulic piston drives back and forth at cylinder body internally-fixed, hydraulic piston and inboard wall of cylinder block direct friction face excessive, long friction can produce a large amount of heats, affects the service life of hydraulic cylinder, the service life of the whole air assistor of final impact; Three, the long-term oil starvation of hydraulic piston latter half, the wearing and tearing caused between hydraulic piston and inboard wall of cylinder block are accelerated by oil starvation, and heat increases, and affects the service life of hydraulic ram, the service life of the whole air assistor of final impact; Four, the oil feeding device complex structure be made up of accessories such as the flanges on driving lever, valve and hydraulic piston, and each parts easily damage, and often need to change.
Summary of the invention
The technical problem to be solved in the present invention is: provide that a kind of structure is simple, light and flexible, braking long air assistor in quick and service life.
The technical solution adopted for the present invention to solve the technical problems is: a kind of air assistor, comprise cylinder, hydraulic ram and oil storage cup, hydraulic ram comprises cylinder body, hydraulic piston and piston rod, cylinder body is provided with oil feed groove, the leading section cover of hydraulic piston has leather cup, described cylinder body is aluminum alloy cylinder body, hydraulic piston is aluminum alloy hydraulic piston, cavity is provided with in hydraulic piston, the aft end face of hydraulic piston is provided with the opening be communicated with cavity, hydraulic piston is axially provided with interior oilhole, the two ends of interior oilhole respectively with cavity and the cylinder body chamber that is positioned on front side of hydraulic piston, one end of piston rod from opening stretch in cavity with hydraulic piston floating connection, on the excircle of hydraulic piston, radial direction offers multiple tracks circular radiating groove, wherein offer multiple fuel return hole in one circular radiating groove, fuel return hole is communicated with cavity, the bottom of oil feed groove is oblique is provided with fuel feed hole, one end of fuel feed hole is communicated with oil feed groove, the other end and cylinder body chamber, one end of fuel feed hole and cylinder body chamber and piston rod are positioned at the homonymy of hydraulic piston.
One end of described piston rod is provided with the connector of round pie, connector is connected with the end of piston rod by a columned connecting portion, the diameter of connecting portion is less than the diameter of piston rod, the oil seal seat for sealing interior oilhole is axially movably set with in cavity, the front end face of oil seal seat is provided with valve rubber with interior porose corresponding position, oil seal seat offers link slot, connector on piston rod is inserted in link slot, piston rod by connector insert in link slot with hydraulic piston floating connection, oil seal seat in cavity with piston rod synchronizing shaft to activity, oily passage was left between oil seal seat and the inwall of cavity.
The present invention compared with prior art, has the following advantages:
One, described cylinder body and hydraulic piston are made by aluminum alloy, instead of ironware, alleviate the weight of whole hydraulic ram, finally alleviate the weight of whole air assistor, simultaneously, piston rod adopts floating connection to replace with the connection mode of hydraulic piston and is fixedly connected with, improves heat dispersion, not easy to wear between piston and piston rod, simultaneously, make hydraulic ram light and flexible, whole air assistor braking is quick, air assistor total performance improvement.
Two, the bottom of oil feed groove is oblique is provided with fuel feed hole, adopt the direct oil-feed of the fuel feed hole of oblique setting, structure is simple, with low cost, easy to maintenance, also solve the drawback that each accessory in polygamy part oil feeding device often needs because of fragile to change simultaneously, effectively extend the service life of hydraulic ram, thus also extended the service life of whole air assistor accordingly.
Three, hydraulic oil can enter in cavity through opening on rear side of hydraulic piston, also can enter in cavity through interior oilhole on front side of hydraulic piston, realize two-way simultaneous oil-feed, simultaneously, fuel return hole has the function promoting running of hydraulic power oil, thus whole hydraulic piston is immersed in hydraulic oil for a long time, improve distributing of heat, efficiently solving hydraulic piston latter half causes the wearing and tearing between hydraulic piston and inboard wall of cylinder block to be accelerated because of long-term oil starvation, the drawback that heat increases, the service life of effective prolongation hydraulic ram, thus the service life of whole air assistor is also extended accordingly.
Four, the existence of circular radiating groove reduces hydraulic piston and inboard wall of cylinder block direct friction face, reduce the heat that hydraulic piston and inboard wall of cylinder block produce because of friction, also enhance radiating effect simultaneously, the service life of effective prolongation hydraulic ram, thus also extended accordingly the service life of whole air assistor.
As preferably, the quantity of described circular radiating groove is 4 roads, and be followed successively by circular radiating groove one, circular radiating groove two, circular radiating groove three and circular radiating groove four from the front portion of hydraulic piston to rear portion, wherein circular radiating groove two is positioned at the middle part of hydraulic piston.The quantity of circular radiating groove is set to 4 roads the most reasonable, wherein one circular radiating groove is arranged on the middle part of hydraulic piston, makes the better heat-radiation effect of whole hydraulic piston.
As preferably, described fuel return hole is opened in circular radiating groove two, and the quantity of described fuel return hole is 2, is oppositely arranged on respectively in circular radiating groove two.Fuel return hole is arranged on the circular radiating groove being positioned at middle part, promote that the effect of running of hydraulic power oil is better, radiating effect is better.
As improvement, be embedded with oiling ring respectively in described circular radiating groove one and circular radiating groove four, the external diameter of oiling ring is greater than the external diameter of hydraulic piston.Oiling ring has been isolated hydraulic piston and has been contacted with the direct of inboard wall of cylinder block, avoid the wearing and tearing that hydraulic piston produces because directly contacting with inboard wall of cylinder block, simultaneously, oiling ring also has rapid heat dissipation, improves the effect of lubrication, the service life of effective prolongation hydraulic ram, thus also extended further the service life of whole air assistor.
As improvement, described oiling ring is provided with opening.This opening plays buffer action to oiling ring itself, prevents oiling ring from rupturing, and meanwhile, also can accumulate dirt foam and ensure that piston is not stuck.
As improvement, described circular radiating groove three is embedded with O type rubber guide collar.The driving back and forth of piston rod can cause leather cup unbalance stress, and guiding is unstable, and this O type rubber guide collar has elasticity, can play well auxiliary directional tagging.
As improvement, described cylinder comprises gas piston, and described gas piston is aluminum alloy gas piston.Gas piston is made up of aluminum alloy, instead of traditional iron, further mitigates the weight of whole air assistor, also mitigates the wearing and tearing of gas piston face simultaneously.
As improvement, described hydraulic ram comprises the seal cover cap for sealed cylinder block, seal cover cap and cylinder body one-body molded by hollow pressure by aluminum alloy.Adopt this structure design, the weight of hydraulic ram can be alleviated further, add man-hour without the need to welding and doing seal cover cap simultaneously, do not need plating, improve environmental protection and energy saving effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of air assistor of the present invention.
Fig. 2 is the structural representation of oil seal seat in hydraulic ram.
Fig. 3 is the structural representation that oil seal seat is placed in cavity.
Shown in figure: II, cylinder III, hydraulic ram IV, oil storage cup 1, cylinder body 2, hydraulic piston 3, piston rod 4, oil feed groove 5, cavity 6, opening 7, interior oilhole 8, oil seal seat 81, plane 9, link slot 91, radial groove 92, U-shaped breach 93, limit convex is along 10, fuel feed hole 11, connector 12, connecting portion 13, valve colloid 14, circular radiating groove 1, circular radiating groove 2 16, circular radiating groove 3 17, circular radiating groove 4 18, fuel return hole 19, oiling ring 20, O type rubber guide collar 21, spacing mat 22, jump ring 23, leather cup 24, groove 25, oil outlet 26, cross oily passage 27, gas epithelium lid 28, bell-shaped percussion instrument, used in ancient time by troops on march connects lid 29, gas piston 30, pull back spring 31, admission port 32, epithelium 33, seal cover cap.
Detailed description of the invention
Below by drawings and Examples, the present invention is further elaborated.
As shown in Figure 1: a kind of air assistor, cylinder II, hydraulic ram III and oil storage cup IV is comprised.Cylinder II comprises and connects by gas epithelium lid 27 and bell-shaped percussion instrument, used in ancient time by troops on march the parts such as lid assembly, the epithelium 32 be arranged in lid assembly, gas piston 29, pull back spring 30 that lid 28 forms, and gas epithelium lid 27 is provided with admission port 31.Cylinder II is prior art, and its concrete structure here repeats no more.Described hydraulic ram III comprises cylinder body 1, hydraulic piston 2 and piston rod 3.The front end of cylinder body 1 is provided with oil outlet 25, cylinder body 1 is provided with oil feed groove 4, and oil storage cup IV is fixed on oil feed groove 4.The leading section cover of piston 2 has leather cup 23.The end of cylinder body 1 is fixed on bell-shaped percussion instrument, used in ancient time by troops on march and connects on lid 28, and the end of hydraulic piston 2 is fixedly connected with gas piston 29.Cylinder body 1 is aluminum alloy cylinder body 1, and hydraulic piston 2 is aluminum alloy hydraulic piston 2, and cylinder body 1 and hydraulic piston 2 form by high tonnage press pressure.Be provided with cavity 5 in hydraulic piston 2, the aft end face of hydraulic piston 2 is provided with the opening 6 be communicated with cavity 5.Hydraulic piston 2 is axially provided with interior oilhole 7, the two ends of interior oilhole 7 respectively with cavity 5 and the cylinder body chamber that is positioned on front side of hydraulic piston 2.Above-described cylinder body chamber is the chamber of cylinder body 1 inside.One end of piston rod 3 stretches in cavity 5 and hydraulic piston 2 floating connection from opening 6.On the excircle of hydraulic piston 2, radial direction offers multiple tracks circular radiating groove, and wherein offer multiple fuel return hole 18 in one circular radiating groove, fuel return hole 18 is communicated with cavity 5.Above-described circular radiating groove is exactly the radial ringed groove being opened in hydraulic piston 2 surface in fact.The bottom of oil feed groove 4 is oblique is provided with fuel feed hole 10, one end of fuel feed hole 10 is communicated with oil feed groove 4, the other end and cylinder body chamber, one end of fuel feed hole 10 and cylinder body chamber and piston rod 3 are positioned at the homonymy of hydraulic piston 2, during concrete enforcement, fuel feed hole 10 is positioned at the top of cylinder body 1 end with one end of cylinder body chamber, so, when hydraulic piston 2 is retracted to cylinder body 1 end, hydraulic oil in oil feed groove 4 directly can fall into cylinder chamber indoor by fuel feed hole 10, specifically fall on the connecting portion 12 on piston rod 3, enter the cavity 5 of hydraulic piston 2 inside from opening 6 again.
One end of described piston rod 3 is provided with the connector 11 of round pie, and connector 11 is connected with the end of piston rod 3 by a columned connecting portion 12, and the diameter of connecting portion 12 is less than the diameter of piston rod 3.Axially be movably set with the oil seal seat 8 for sealing interior oilhole 7 in cavity 5, the front end face of oil seal seat 8 is provided with valve rubber 13 with interior porose corresponding position.Valve rubber 13 is prior art, and it has good sealing effectiveness.Oil seal seat 8 offers link slot 9, connector 11 on piston rod 3 is inserted in link slot 9, piston rod 3 is inserted in link slot 9 and hydraulic piston 2 floating connection by connector 11, oil seal seat 8 in cavity 5 with piston rod 3 synchronizing shaft to activity, left oily passage 26 between the inwall of oil seal seat 8 and cavity 5.
Described cavity 5 is in cylindric, and cavity 5 and cylinder body 1 concentric are arranged.Oil seal seat 8 is also in cylindric, the diameter of oil seal seat 8 and the diameter of cavity 5 match, it is specifically the diameter that the diameter of oil seal seat 8 is slightly less than cavity 5, simultaneously, the height of oil seal seat 8 is less than the height of cavity 5, just in time can be placed in cavity 5 to make oil seal seat 8 and can antero posterior axis to activity, the outer wall of oil seal seat 8 and the inwall bearing fit of cavity 5.The sidewall of oil seal seat 8 is provided with 4 plane 81,4 planes 81 cutting partial arc to be evenly distributed on the sidewall of oil seal seat 8.The passage formed between each plane 81 and the inwall of cavity 5 is the oily passage 26 of described mistake, and concrete structure as shown in Figure 3.The sidewall of oil seal seat 8 offers a radial groove 91 for accommodating connector 11, the shape and size of radial groove 91 and the shape and size of connector 11 match, and to be just in time placed in this radial groove 91 and to have certain free gap to make connector 11.The aft end face of oil seal seat 8 offers the U-shaped breach 92 of inserting for the connecting portion 12 on piston rod 3, and U-shaped breach 92 is interconnected with radial groove 91.U-shaped breach 92 is also provided with limit convex along 93, when piston rod 3 fore-aft travel, connector 11 can be limited in radial groove 91 along 93 by limit convex, makes it cannot depart from from radial groove 91.Radial groove 91, U-shaped breach 92 and limit convex constitute described link slot 9 along 93, and concrete structure as shown in Figure 2.Valve rubber 13 is arranged at the center of oil seal seat 8 front end face, and interior oilhole 7 is positioned at the center of hydraulic piston 2, and the position of valve rubber 13 is corresponding with the position of interior oilhole 7.The aft end face of hydraulic piston 2 is provided with spacing mat 21, oil seal seat 8 can be limited in cavity 5 by spacing mat 21, makes it cannot depart from from cavity 5.Spacing mat 21 is fixed by a jump ring 22.There is a circular hole at the center of spacing mat 21, and this circular hole is described opening 6, and the connecting portion 12 on piston rod 3 stretches out cavity 5 from this circular hole, and the diameter of circular hole is greater than the diameter of connecting portion 12, and hydraulic oil can enter to cavity 5 from this circular hole.When piston rod 3 driven forward, oil seal seat 8 also forward slip, makes the valve rubber 13 on oil seal seat 8 bonded to each other with interior oilhole 7, and interior oilhole 7 is closed, thus produces high pressure instantaneously in cylinder body 1; When piston rod 3 is retracted, oil seal seat 8 slides backward, and the valve rubber 13 on oil seal seat 8 departs from mutually with interior oilhole 7, and interior oilhole 7 is opened, and the hydraulic oil of the hydraulic oil and cavity 5 that are positioned at the cylinder chamber indoor on front side of hydraulic piston 2 can flow mutually.
The quantity of described circular radiating groove is 4 roads, and 4 road circular radiating grooves are evenly distributed on hydraulic piston 2.Be followed successively by circular radiating groove 1, circular radiating groove 2 15, circular radiating groove 3 16 and circular radiating groove 4 17 from the front portion of hydraulic piston 2 to rear portion, wherein circular radiating groove 2 15 is positioned at the middle part of hydraulic piston 2.The quantity of circular radiating groove is set to 4 roads the most reasonable, wherein one circular radiating groove is arranged on the middle part of hydraulic piston 2, makes the better heat-radiation effect of whole hydraulic piston 2.Fuel return hole 18 is opened in circular radiating groove 2 15, and the quantity of fuel return hole 18 is 2, is oppositely arranged on respectively in circular radiating groove 2 15.Fuel return hole 18 is arranged on the circular radiating groove being positioned at middle part, promote that the effect of running of hydraulic power oil is better, radiating effect is better.
Oiling ring 19 is embedded with respectively in described circular radiating groove 1 and circular radiating groove 4 17.During concrete enforcement, described oiling ring 19 adopts polytetrafluoroethylene to make, and the heat impedance of finished product oiling ring 19 is up to 280 DEG C, and resistance to cold is minimum is-100 DEG C, simultaneously resistance to abrasion and good.The external diameter of oiling ring 19 is greater than the external diameter of hydraulic piston 2.During concrete enforcement, the internal diameter of cylinder body 1 is
mm, the external diameter of hydraulic piston 2 is
mm, after oiling ring 19 installs on hydraulic piston 2, the external diameter of oiling ring 19 is
mm.The direct contact of hydraulic piston 2 and cylinder body 1 inwall isolated by oiling ring 19, avoid the wearing and tearing that hydraulic piston 2 produces because directly contacting with cylinder body 1 inwall, simultaneously, oiling ring 19 also has rapid heat dissipation, improves the effect of lubrication, the service life of effective prolongation hydraulic ram III, thus also extended further the service life of whole air assistor.Oiling ring 19 is provided with opening 6.This opening 6 pairs of oiling rings 19 itself play buffer action, prevent oiling ring 19 from rupturing, and meanwhile, also can accumulate dust and ensure that piston 2 is not stuck.Circular radiating groove 3 16 is embedded with O type rubber guide collar.The driving back and forth of piston rod 3 can cause leather cup 23 unbalance stress, and guiding is unstable, and this O type rubber guide collar has elasticity, can play well auxiliary directional tagging.
Described cylinder II comprises gas piston 29, and gas piston 29 is aluminum alloy gas piston.Gas piston 29 is made up of aluminum alloy, instead of traditional iron, further mitigates the weight of whole air assistor, also mitigates the wearing and tearing on gas piston 29 surface simultaneously.Described hydraulic ram III comprises the seal cover cap 33 for sealed cylinder block, seal cover cap 33 and cylinder body one-body molded by hollow die casting by aluminum alloy.Adopt this structure design, the weight of hydraulic ram III can be alleviated further, add man-hour without the need to welding and doing seal cover cap 33 simultaneously, do not need plating, improve environmental protection and energy saving effect.
In addition, the front end face of described hydraulic piston 2 also offers a columned groove 24, and the existence of this groove 24 not only can alleviate the weight of hydraulic piston 2 further, makes hydraulic piston 2 light and flexible more, part aluminum alloy materials can also be saved simultaneously, reduce costs.Described bell-shaped percussion instrument, used in ancient time by troops on march connects lid 28 and is also made up of aluminum alloy, and touched with well-designed by repeatedly short, the heavy large bag eliminating the back side outstanding is convex, further mitigates the weight of whole air assistor.
The present invention has the following advantages:
One, described cylinder body 1 and hydraulic piston 2 are made by aluminum alloy, instead of ironware, alleviate the weight of whole hydraulic ram III, finally alleviate the weight of whole air assistor, simultaneously, piston rod 3 adopts floating connection to replace traditional being fixedly connected with the connection mode of hydraulic piston 2, improves heat dispersion, not easy to wear between piston 2 and piston rod 3, simultaneously, make hydraulic ram III light and flexible, whole air assistor braking is quick, air assistor total performance improvement.
Two, the bottom of oil feed groove 4 is oblique is provided with fuel feed hole 10, adopt the fuel feed hole 10 directly oil-feed of oblique setting, structure is simple, with low cost, easy to maintenance, also solve the drawback that each accessory in polygamy part oil feeding device often needs because of fragile to change simultaneously, effectively extend the service life of hydraulic ram III, thus also extended the service life of whole air assistor accordingly.
Three, hydraulic oil can enter in cavity 5 through opening 6 on rear side of hydraulic piston 2, also can enter in cavity 5 through interior oilhole 7 on front side of hydraulic piston 2, realize two-way simultaneous oil-feed, simultaneously, fuel return hole 18 has the function promoting running of hydraulic power oil, thus whole hydraulic piston 2 is immersed in hydraulic oil for a long time, improve distributing of heat, efficiently solving hydraulic piston 2 latter half causes the wearing and tearing between hydraulic piston 2 and cylinder body 1 inwall to be accelerated because of long-term oil starvation, the drawback that heat increases, the service life of effective prolongation hydraulic ram III, thus the service life of whole air assistor is also extended accordingly.
Four, the existence of circular radiating groove reduces hydraulic piston 2 and cylinder body 1 inwall direct friction face, reduce the heat that hydraulic piston 2 produces because of friction with cylinder body 1 inwall, also enhance radiating effect simultaneously, the service life of effective prolongation hydraulic ram III, thus also extended accordingly the service life of whole air assistor.
Claims (7)
1. an air assistor, comprise cylinder, hydraulic ram and oil storage cup, hydraulic ram comprises cylinder body, hydraulic piston and piston rod, cylinder body is provided with oil feed groove, the leading section cover of hydraulic piston has leather cup, it is characterized in that: described cylinder body is aluminum alloy cylinder body, hydraulic piston is aluminum alloy hydraulic piston, cavity is provided with in hydraulic piston, the aft end face of hydraulic piston is provided with the opening be communicated with cavity, hydraulic piston is axially provided with interior oilhole, the two ends of interior oilhole respectively with cavity and the cylinder body chamber that is positioned on front side of hydraulic piston, one end of piston rod from opening stretch in cavity with hydraulic piston floating connection, on the excircle of hydraulic piston, radial direction offers multiple tracks circular radiating groove, wherein offer multiple fuel return hole in one circular radiating groove, fuel return hole is communicated with cavity, the bottom of oil feed groove is oblique is provided with fuel feed hole, one end of fuel feed hole is communicated with oil feed groove, the other end and cylinder body chamber, one end of fuel feed hole and cylinder body chamber and piston rod are positioned at the homonymy of hydraulic piston, described cylinder comprises gas piston, and gas piston is aluminum alloy gas piston, described hydraulic ram comprises the seal cover cap for sealed cylinder block, seal cover cap and cylinder body one-body molded by hollow die casting by aluminum alloy.
2. air assistor according to claim 1, it is characterized in that: one end of described piston rod is provided with the connector of round pie, connector is connected with the end of piston rod by a columned connecting portion, the diameter of connecting portion is less than the diameter of piston rod, the oil seal seat for sealing interior oilhole is axially movably set with in cavity, the front end face of oil seal seat is provided with valve rubber with interior porose corresponding position, oil seal seat offers link slot, connector on piston rod is inserted in link slot, piston rod by connector insert in link slot with hydraulic piston floating connection, oil seal seat in cavity with piston rod synchronizing shaft to activity, oily passage was left between oil seal seat and the inwall of cavity.
3. air assistor according to claim 1, it is characterized in that: the quantity of described circular radiating groove is 4 roads, be followed successively by circular radiating groove one, circular radiating groove two, circular radiating groove three and circular radiating groove four from the front portion of hydraulic piston to rear portion, wherein circular radiating groove two is positioned at the middle part of hydraulic piston.
4. air assistor according to claim 3, is characterized in that: described fuel return hole is opened in circular radiating groove two, and the quantity of described fuel return hole is 2, is oppositely arranged on respectively in circular radiating groove two.
5. air assistor according to claim 3, is characterized in that: be embedded with oiling ring respectively in described circular radiating groove one and circular radiating groove four, and the external diameter of oiling ring is greater than the external diameter of hydraulic piston.
6. air assistor according to claim 5, is characterized in that: described oiling ring is provided with opening.
7. air assistor according to claim 3, is characterized in that: described circular radiating groove three is embedded with O type rubber guide collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328369.5A CN104129381B (en) | 2014-07-11 | 2014-07-11 | air assistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328369.5A CN104129381B (en) | 2014-07-11 | 2014-07-11 | air assistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104129381A CN104129381A (en) | 2014-11-05 |
| CN104129381B true CN104129381B (en) | 2016-04-20 |
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ID=51802326
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410328369.5A Active CN104129381B (en) | 2014-07-11 | 2014-07-11 | air assistor |
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| Country | Link |
|---|---|
| CN (1) | CN104129381B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973961B (en) * | 2018-09-27 | 2024-03-08 | 绍兴精致机械制造有限公司 | Air booster |
| CN111959478B (en) * | 2020-08-27 | 2021-08-06 | 唐联 | Tread brake device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08207742A (en) * | 1995-02-08 | 1996-08-13 | Jidosha Kiki Co Ltd | Pneumatic and hydraulic booster |
| CN2883108Y (en) * | 2006-03-02 | 2007-03-28 | 王伟 | Air strengthening brake general pump |
| CN201120888Y (en) * | 2007-11-29 | 2008-09-24 | 徐勇 | Air boosting pump |
| CN203637802U (en) * | 2013-10-23 | 2014-06-11 | 浙江正邦汽车模具有限公司 | Casing of car vacuum booster |
| CN204055762U (en) * | 2014-07-11 | 2014-12-31 | 绍兴县精致机械制造有限公司 | Air assistor |
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Address after: 312000 Zhejiang Province, Shaoxing city Keqiao district town of Lanting Pavilion Street Patentee after: Shaoxing Fine Machinery Manufacturing Co., Ltd. Address before: The 312000 Lanting Pavilion in Zhejiang province Shaoxing city Keqiao District Street Patentee before: SHAOXING COUNTY EXQUISITE MACHINERY MANUFACTURING CO., LTD. |
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Address after: 312045 Zhejiang Province, Shaoxing city Keqiao district town of Lanting Pavilion Street Patentee after: Shaoxing Fine Machinery Manufacturing Co., Ltd. Address before: 312000 Zhejiang Province, Shaoxing city Keqiao district town of Lanting Pavilion Street Patentee before: SHAOXING COUNTY EXQUISITE MACHINERY MANUFACTURING CO., LTD. |