CN201228619Y - Air enforcing pump - Google Patents

Air enforcing pump Download PDF

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Publication number
CN201228619Y
CN201228619Y CNU2008200382241U CN200820038224U CN201228619Y CN 201228619 Y CN201228619 Y CN 201228619Y CN U2008200382241 U CNU2008200382241 U CN U2008200382241U CN 200820038224 U CN200820038224 U CN 200820038224U CN 201228619 Y CN201228619 Y CN 201228619Y
Authority
CN
China
Prior art keywords
valve
air
piston assembly
way valve
assembly
Prior art date
Application number
CNU2008200382241U
Other languages
Chinese (zh)
Inventor
乔跃平
叶新年
王�华
王安芝
左新珍
Original Assignee
芜湖盛力制动有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 芜湖盛力制动有限责任公司 filed Critical 芜湖盛力制动有限责任公司
Priority to CNU2008200382241U priority Critical patent/CN201228619Y/en
Application granted granted Critical
Publication of CN201228619Y publication Critical patent/CN201228619Y/en

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Abstract

The utility model discloses an air booster pump, which comprises an air piston assembly (1); a connection cover (5); a return spring (3) between the air piston assembly (1) and the connection cover (5); a push rod (4) penetrating the connection cover (5); a hydraulic piston assembly (7) on the end section of the push rod (4); a double check valve assembly (2) arranged on the air piston assembly (1), circularly closed while incoming air and circularly opened while discharging air; and a check valve assembly (6) arranged on the connection cover (5), closed while discharging air and opened while incoming air. The air booster pump can overcome such disadvantage so as to prevent impurities such as sand in the air from being sucked into the pump body and buffer the impact force of high-pressure oil on the oil inlet valve, thereby ensuring the sealing performance of the product, improving the braking performance of the product, prolonging the service life of the product, and ensuring stable and reliable braking performance at long term in severe working environment with large content of dust.

Description

A kind of air booster pump
Technical field
The utility model relates to auto parts and components, especially relates to the air booster pump of car brakeing.
Background technique
Existing air booster pump, as shown in Figure 5, the hydraulic piston assembly 7 that comprises the return spring 3 between gas piston assembly 1, connecting cover 5, gas piston assembly 1 and the connecting cover 5, the push rod 4 that passes connecting cover 5 and push rod 4 ends, hydraulic piston assembly 7 comprises check valve skeleton 27, oil-feed valve 28, has the hydraulic piston 8 and the hydraulic cylinder 26 in repairing hole, and resuscitation apparatus 29 is installed on the connecting cover 5.During the work of air booster pump, the suction port air inlet, promote gas piston assembly 1, driving push rod 4 moves to hydraulic cylinder 26 directions, push rod 4 promotes the ram seat assembly, and oil-feed valve 28 is sealed the repairing hole of hydraulic piston 8, constantly increases along with acting on gas piston assembly atmospheric pressure, the thrust of hydraulic piston also constantly increases, and the hydraulic pressure value of output increases exponentially by setting pressure ratio; When air pressure discharged, under the effect of return spring 3, hydraulic piston thrust constantly reduced, and output oil pressure successively decreases thereupon, and when air pressure was reduced to 0 value, hydraulic piston 8 repairing holes were opened wide, and hydraulic oil turns back to lubricating cup through passage.The air booster pump of this spline structure, be applied on the vehicle, because the service brake work frequency is many, every work once, product through air inlet to the exhaust cycle process, when vehicle under the bigger abominable working environment of dust, the easy thing of outside contamination is inhaled in the cylinder body cavity, heavy wear cylinder body sealing surface and rubber seal cause the gas leakage of product assembly, influence the product braking ability.
The model utility content
Technical problem to be solved in the utility model is: a kind of air booster pump is provided, this air booster pump can prevent that extraneous particulate pollutant from entering in the product cylinder body, thereby guarantee under the bigger abominable working environment of dust, can guarantee for a long time that also the product braking ability is reliable and stable.
Solve this technical problem, the technical solution of the utility model is: a kind of air booster pump, the hydraulic piston assembly that comprises the return spring between gas piston assembly, connecting cover, gas piston assembly and the connecting cover, the push rod that passes connecting cover and push rod end, described gas piston assembly is provided with the air valve that the air inlet circulation is closed, exhaust cycle is opened, and described connecting cover is provided with the air valve of air inlet unlatching, exc..
Described hydraulic piston assembly comprises hydraulic piston, check valve, repairing hole, steel ball and steel ball back-up ring, have the conical cavity that steel ball can be free movable between the opposite end end face of the check valve in repairing hole and the steel ball back-up ring, the diameter of steel ball is greater than the diameter in repairing hole.
Air valve in the described gas piston assembly is the two-way valve assembly, it comprises two-way valve valve body, spring seat, volute spring, two way valve, return spring, the two-way valve valve body has the stepped shape through hole, the through hole section that diameter is bigger is provided with spring seat, volute spring and two way valve, and return spring and volute spring are in the both sides of two way valve respectively.
Described two-way valve assembly and gas piston assembly removably connect.
The air valve of described connecting cover is the one-way valve assembly, it comprises one-way valve valve body, valve, valve return spring, spring seat and back-up ring, has step-like through hole in the one-way valve valve body, the through hole section that diameter is bigger is provided with valve, valve return spring, spring seat and back-up ring, and the valve return spring is between valve and spring seat.
Described one-way valve assembly is threaded with connecting cover.
The utility model air booster pump adopts such structure, overcome foreign material such as airborne silt and be inhaled into the interior defective of the pump housing in the course of the work, cushioned the impact force of high pressure oil simultaneously to the oil-feed valve, guaranteed the sealability of product, improved the product braking ability, prolonged the working life of product, guaranteed under the bigger abominable working environment of dust, can guarantee for a long time that also the product braking ability is reliable and stable.
Description of drawings
Below in conjunction with accompanying drawing the utility model air booster pump is done explanation in further detail:
Fig. 1 is the structural representation of the utility model air booster pump;
Fig. 2 is the structure enlarged diagram of hydraulic piston assembly when non-braking state shown in Figure 1;
Fig. 3 is a two-way valve assembly structure for amplifying schematic representation shown in Figure 1;
Fig. 4 is an one-way valve assembly structure for amplifying schematic representation shown in Figure 1;
Fig. 5 is the structural representation of prior art air booster pump;
In Fig. 1 to Fig. 5,1, the gas piston assembly; 2, two-way valve assembly; 3, return spring; 4, push rod; 5, connecting cover; 6, one-way valve assembly; 7, hydraulic piston assembly; 8, hydraulic piston; 9, back-up ring; 10, check valve; 11, hydraulic pressure apron; 12, repairing hole; 13, steel ball, 14, the steel ball back-up ring; 15, valve body; 16, valve; 17, valve return spring; 18, spring seat; 19, back-up ring; 20, two-way valve valve body; 21 spring seats; 22, volute spring; 23, packing ring; 24, two way valve; 25, return spring; 26, hydraulic cylinder; 27, check valve skeleton; 28, oil-feed valve; 29, resuscitation apparatus.
Embodiment
As shown in Figure 1, a kind of air booster pump, the hydraulic piston assembly 7 that comprises the return spring 3 between gas piston assembly 1, connecting cover 5, gas piston assembly 1 and the connecting cover 5, the push rod 4 that passes connecting cover 5 and push rod 4 ends, have the two-way valve assembly 2 that the air inlet circulation is closed, exhaust cycle is opened in the gas piston assembly 1, have the one-way valve assembly 6 that the air inlet circulation is opened, exhaust cycle is closed on the connecting cover 5.
As shown in Figure 2, hydraulic piston assembly 7 comprises hydraulic piston 8, back-up ring 9, check valve 10, hydraulic pressure apron 11, steel ball 13 and the steel ball back-up ring 14 with repairing hole 12, have the conical cavity that steel ball 13 can be free movable between the opposite end end face of the check valve 10 in repairing hole 12 and the steel ball back-up ring 14, the diameter of steel ball 13 is greater than the diameter in repairing hole 12.In hydraulic piston assembly and the hydraulic cylinder of packing into after push rod is connected, during work, the suction port air inlet, promote gas piston assembly 1, driving push rod moves to the hydraulic cylinder direction, push rod promotes the ram seat assembly, check valve 10 is sealed the repairing hole 12 of hydraulic piston, along with hydraulic piston moves in hydraulic cylinder, the hydraulic cylinder volume reduces, and pressure increases, steel ball 13 is under big hydraulic pressure in the piston assembly, seal the repairing hole the other end,, stoped the impact force of high pressure oil check valve with check valve two way sealed repairing hole.When air pressure discharges, under the effect of return spring 3, gas piston assembly 1 return, push rod drive ram seat repairing hole and open wide, along with hydraulic piston to swivel motion, the hydraulic cylinder volume increases, pressure reduces, and steel ball 13 rolls to surface bottom under the effect of gravity, and the repairing hole the other end opens wide, hydraulic oil turns back to lubricating cup through passage.
As shown in Figure 3, two-way valve assembly 2 comprises two-way valve valve body 20, spring seat 21, volute spring 22, packing ring 23, two way valve 24, return spring 25, two-way valve valve body 20 has the stepped shape through hole, the through hole section that diameter is bigger has spring seat 21, volute spring 22 and two way valve 24, return spring 25 and volute spring 22 are in the both sides of two way valve 24 respectively, two-way valve valve body 20 has the external thread section that cooperates with gas piston assembly 1, two way valve 24 has the sphere end, two-way valve assembly 2 is connected with the gas piston assembly by screw thread, and packing ring 23 is enclosed within two-way valve valve body thread section.During work, the suction port air inlet, two way valve 24 is closed, and the cavity of gas piston assembly both sides does not communicate; When air pressure discharged, under the effect of return spring, two way valve 24 was thrown off, and the cavity of gas piston assembly both sides communicates, gas piston assembly return.
As shown in Figure 4, the one-way valve assembly comprises one-way valve valve body 15, valve 16, valve return spring 17, spring seat 18 and back-up ring 19, has step-like through hole in the one-way valve valve body 15, the through hole section that diameter is bigger has valve 16, valve return spring 17, spring seat 18 and back-up ring 19, valve return spring 17 is between valve 16 and spring seat 18, and back-up ring 19 is packed in the valve body circlip groove.During work, the suction port air inlet, the valve 16 of one-way valve assembly 6 is opened in gas compression in the cylinder block body, and the gas piston assembly is to the motion of hydraulic piston assembly direction; When air pressure discharged, under the effect of valve return spring 17, valve 16 was closed, and prevented that extraneous particulate pollutant from entering in the cylinder block.
The air booster pump of prior art, be applied on the vehicle, because the service brake work frequency is many, every work once, to the exhaust cycle process, the oil-feed rubber valve will be impacted once by the high pressure oil in the hydraulic cylinder product through air inlet, the oil-feed rubber valve can produce broken cut stop up oil inlet hole or with hydraulic oil flow in hydraulic cylinder, shortened the working life of product, and braking ability descends, and influences Product Safety.
The utility model air booster pump adopts above-mentioned structure, the environmental contaminants that has overcome prior art enters the interior defective of product cylinder body, and the buffering high pressure oil has strengthened reliability of products to the impact of oil-feed valve, prolong the working life of product, guaranteed the stable and safety of product braking ability.

Claims (6)

1, a kind of air booster pump, the hydraulic piston assembly (7) that comprises the return spring (3) between gas piston assembly (1), connecting cover (5), gas piston assembly (1) and the connecting cover (5), the push rod (4) that passes connecting cover (5) and push rod (4) end, it is characterized in that: described gas piston assembly (1) is provided with the air valve that the air inlet circulation is closed, exhaust cycle is opened, and described connecting cover (5) is provided with the air valve of air inlet unlatching, exc..
2, air booster pump according to claim 1, it is characterized in that: described hydraulic piston assembly comprises hydraulic piston (8), check valve (10), repairing hole (12), steel ball (13) and steel ball back-up ring (14), have the conical cavity that steel ball (13) can be free movable between the opposite end end face of the check valve (10) in repairing hole (12) and the steel ball back-up ring (14), the diameter of steel ball (13) is greater than the diameter of repairing hole (12).
3, air booster pump according to claim 1 and 2, it is characterized in that: the air valve in the described gas piston assembly (1) is two-way valve assembly (2), it comprises two-way valve valve body (20), spring seat (21), volute spring (22), two way valve (24), return spring (25), two-way valve valve body (20) has the stepped shape through hole, the through hole section that diameter is bigger is provided with spring seat (21), volute spring (22) and two way valve (24), and return spring (25) and volute spring (22) are in the both sides of two way valve (24) respectively.
4, air booster pump according to claim 3 is characterized in that: described two-way valve assembly (2) removably connects with gas piston assembly (1).
5, air booster pump according to claim 1 and 2, it is characterized in that: the air valve of described connecting cover (5) is one-way valve assembly (6), it comprises one-way valve valve body (15), valve (16), valve return spring (17), spring seat (18) and back-up ring (19), the one-way valve valve body has step-like through hole in (15), the through hole section that diameter is bigger is provided with valve (16), valve return spring (17), spring seat (18) and back-up ring (19), and valve return spring (17) is positioned between valve (16) and the spring seat (18).
6, air booster pump according to claim 5 is characterized in that: described one-way valve assembly (6) is threaded with connecting cover (5).
CNU2008200382241U 2008-06-14 2008-06-14 Air enforcing pump CN201228619Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200382241U CN201228619Y (en) 2008-06-14 2008-06-14 Air enforcing pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200382241U CN201228619Y (en) 2008-06-14 2008-06-14 Air enforcing pump

Publications (1)

Publication Number Publication Date
CN201228619Y true CN201228619Y (en) 2009-04-29

Family

ID=40633570

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008200382241U CN201228619Y (en) 2008-06-14 2008-06-14 Air enforcing pump

Country Status (1)

Country Link
CN (1) CN201228619Y (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102022309A (en) * 2010-12-02 2011-04-20 芜湖盛力制动有限责任公司 Booster pump for engineering mechanical brake system
CN102079302A (en) * 2010-12-02 2011-06-01 芜湖盛力制动有限责任公司 Air booster pump of engineering machinery brake system
CN102416938A (en) * 2010-09-27 2012-04-18 斗山工程机械(山东)有限公司 Brake system of loader and booster pump thereof
CN102424042A (en) * 2011-09-28 2012-04-25 芜湖市安芜汽车制动元件有限公司 Air booster pump structure
CN102431537A (en) * 2011-12-19 2012-05-02 芜湖盛力制动有限责任公司 Air boost pump of engineering mechanical braking system
CN102587007A (en) * 2012-02-22 2012-07-18 江苏技术师范学院 Pressure maintaining supercharger
CN102700536A (en) * 2012-03-12 2012-10-03 芜湖盛力科技股份有限公司 Air booster pump of braking system of engineering machine
CN103758723A (en) * 2013-12-27 2014-04-30 芜湖盛力科技股份有限公司 Air pump of engineering machinery braking system
CN103863284A (en) * 2014-01-27 2014-06-18 李玉喜 Forced circulation system and forced-circulation brake system constructed therefrom
CN104192108A (en) * 2014-08-16 2014-12-10 祝建飞 Oil-saving air booster pump capable of buffering impact
CN104776001A (en) * 2013-12-16 2015-07-15 德国Skf润滑油系统有限责任公司 Piston pump device
CN104791213A (en) * 2013-12-16 2015-07-22 德国Skf润滑油系统有限责任公司 Piston pump device

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102416938A (en) * 2010-09-27 2012-04-18 斗山工程机械(山东)有限公司 Brake system of loader and booster pump thereof
CN102022309B (en) * 2010-12-02 2012-09-05 芜湖盛力制动有限责任公司 Booster pump for engineering mechanical brake system
CN102079302A (en) * 2010-12-02 2011-06-01 芜湖盛力制动有限责任公司 Air booster pump of engineering machinery brake system
CN102079302B (en) * 2010-12-02 2013-06-12 芜湖盛力制动有限责任公司 Air booster pump of engineering machinery brake system
CN102022309A (en) * 2010-12-02 2011-04-20 芜湖盛力制动有限责任公司 Booster pump for engineering mechanical brake system
CN102424042A (en) * 2011-09-28 2012-04-25 芜湖市安芜汽车制动元件有限公司 Air booster pump structure
CN102431537A (en) * 2011-12-19 2012-05-02 芜湖盛力制动有限责任公司 Air boost pump of engineering mechanical braking system
CN102587007A (en) * 2012-02-22 2012-07-18 江苏技术师范学院 Pressure maintaining supercharger
CN102700536A (en) * 2012-03-12 2012-10-03 芜湖盛力科技股份有限公司 Air booster pump of braking system of engineering machine
CN102700536B (en) * 2012-03-12 2015-04-22 芜湖盛力科技股份有限公司 Air booster pump of braking system of engineering machine
CN104776001B (en) * 2013-12-16 2019-09-10 德国Skf润滑油系统有限责任公司 Piston pumping unit
CN104776001A (en) * 2013-12-16 2015-07-15 德国Skf润滑油系统有限责任公司 Piston pump device
CN104791213A (en) * 2013-12-16 2015-07-22 德国Skf润滑油系统有限责任公司 Piston pump device
CN103758723A (en) * 2013-12-27 2014-04-30 芜湖盛力科技股份有限公司 Air pump of engineering machinery braking system
CN103863284B (en) * 2014-01-27 2017-01-25 李玉喜 Forced circulation system and forced-circulation brake system constructed therefrom
CN103863284A (en) * 2014-01-27 2014-06-18 李玉喜 Forced circulation system and forced-circulation brake system constructed therefrom
CN104192108A (en) * 2014-08-16 2014-12-10 祝建飞 Oil-saving air booster pump capable of buffering impact

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090429

Termination date: 20120614