CN102022309A - Booster pump for engineering mechanical brake system - Google Patents

Booster pump for engineering mechanical brake system Download PDF

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Publication number
CN102022309A
CN102022309A CN 201010571014 CN201010571014A CN102022309A CN 102022309 A CN102022309 A CN 102022309A CN 201010571014 CN201010571014 CN 201010571014 CN 201010571014 A CN201010571014 A CN 201010571014A CN 102022309 A CN102022309 A CN 102022309A
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CN
China
Prior art keywords
cylinder
diaphragm
oil
hydraulic cylinder
booster pump
Prior art date
Application number
CN 201010571014
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Chinese (zh)
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CN102022309B (en
Inventor
乔跃平
叶新年
王�华
李钢
王安芝
彭涛
Original Assignee
芜湖盛力制动有限责任公司
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Priority to CN201010571014A priority Critical patent/CN102022309B/en
Publication of CN102022309A publication Critical patent/CN102022309A/en
Application granted granted Critical
Publication of CN102022309B publication Critical patent/CN102022309B/en

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Abstract

The invention discloses a booster pump for an engineering mechanical brake system, which comprises a cylinder, a hydraulic cylinder and an oil storage cup, wherein an air inlet of the cylinder is connected with an air brake valve of a compressed air pump; an oil outlet of the hydraulic cylinder is connected with an oil inlet of a piston oil cylinder of a brake; and the cylinder is a diaphragm cylinder, namely a diaphragm is arranged in a cylinder shell of the cylinder, and the diaphragm is connected with a hydraulic piston in the hydraulic cylinder by a piston rod. By adopting the technical scheme, a connection mode of an air chamber is changed, the diaphragm structure is adopted, the diaphragm is deformed by means of air pressure during operating to push the piston to move, and the pollution of air sources and dust and the like entering the air chamber do not influence the air chamber of the booster pump; and a shutoff oil inlet valve controls brake fluid to enter and reflow, and the volume of the brake fluid in a fluid chamber is changed scarcely during the operating, so a fluid level in the oil storage cup during the movement of the brake fluid is invariant basically, the entering of the dust and the generation of air bubbles are avoided effectively, and the stability of the brake system is enhanced.

Description

A kind of booster pump of engineering machinery braking system
Technical field
The invention belongs to the technical field of engineering machinery, relate to the braking system in the engineering machinery, more particularly, the present invention relates to a kind of booster pump of engineering machinery braking system.
Background technique
In the prior art, air booster pump air chamber piston rod commonly used and the perpendicularity between the push rod are that the perpendicularity by the mating face guarantees, but traditional booster pump is difficult to guarantee the perpendicularity requirement after the assembling; Brake fluid in the oil storage cup produces significantly fluctuation in the process of braking, brake fluid is easy to generate bubble and high temperature, causes fuel injection event when braking continuously; Traditional booster pump is poor at the situation contamination resistance of work under bad environment, and the life-span is short.
Summary of the invention
Problem to be solved by this invention provides a kind of booster pump of engineering machinery braking system, its objective is to make product also proper functioning for a long time under abominable physical environment, thus the working life of improving product.
To achieve these goals, the technological scheme taked of the present invention is:
The booster pump of engineering machinery braking system provided by the present invention comprises cylinder, oil hydraulic cylinder and oil storage cup, and the suction port of described cylinder links to each other with the air outlet of compressed air pump; The oil outlet of described oil hydraulic cylinder links to each other with the filler opening of brake plunger oil cylinder, and described cylinder adopts the diaphragm type cylinder, promptly establishes diaphragm in the cylinder shell of described cylinder, and described diaphragm is connected with described piston rod by the pallet assembly.
Establish return spring in the described cylinder, described return spring is a spiral tower shape pressure spring, and its big end is fixed on the cylinder shell by spring seat, and its small end is supported by stage clip pallet assembly, and is connected with described diaphragm.
Push rod is established in described oil storage cup and oil hydraulic cylinder joint, and described push rod is oil storage cup is communicated with valve with oil hydraulic cylinder a spool.
Adopt the sealing of Sealing group between the hydraulic cylinder of described piston rod and described oil hydraulic cylinder.
Described cylinder is established cap assembly, and the outward edge of described diaphragm is clamped by described cylinder shell and cap assembly, and the binding site of described hydraulic cylinder and cylinder shell clamps by fastening screw nut.
The present invention adopts technique scheme, changes the Placement of air chamber, adopts diaphragm structure, mainly relies on air pressure to make diaphragm deformation promote piston rod movement during work, the gentle indoor dust that enters of the pollution of source of the gas etc. to the booster pump air chamber without any influence; The entering and refluxing of cut-off type oiling valve gate control brake fluid, liquid chamber brake fluid volume changes little during work, therefore during the brake fluid motion in the oil storage cup liquid level constant substantially, effectively avoided dust to enter generation with bubble, strengthened the stability of braking system.
Description of drawings
Below expressed content of the accompanying drawing of this specification and the mark among the figure are made brief description:
Fig. 1 is a structural representation of the present invention.
Be labeled as among the figure:
1, cap assembly, 2, diaphragm, 3, stage clip pallet assembly, 4, return spring, 5, clip, 6, piston rod, 7, cylinder shell, 8, fastening screw nut, 9, spring seat, 10, oil-feed plug screw assembly, 11, oil storage cup, 12, little fastening screw nut, 13, O-ring seals, 14, fuel-displaced plug screw, 15, the Sealing group, 16, hydraulic cylinder, 17, suction port, 18, oil outlet, 19, push rod.
Embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and working principle, the manufacturing process of the mutual alignment between the shape of the specific embodiment of the present invention such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present invention, technological scheme had more complete, accurate and deep understanding to help those skilled in the art.
The of the present invention structure expressed as Fig. 1, the present invention is a kind of booster pump of engineering machinery braking system, comprises cylinder, oil hydraulic cylinder and oil storage cup 11, the suction port 17 of described cylinder links to each other with the air outlet of the air brake valve of compressed air pump; The oil outlet 18 of described oil hydraulic cylinder links to each other with the filler opening of brake plunger oil cylinder.Oil storage cup 11 is fixed on the oil-feed plug screw assembly 10 by little fastening screw nut 12.Adopt O-ring seals 13 sealings between oil storage cup 11 and the oil-feed plug screw assembly 10.On the fuel-displaced plug screw 14 that oil outlet 18 is located at hydraulic cylinder 16 is connected.
In order to solve the problem that exists at the described present known technology of this specification background technique part and to overcome its defective, realization makes product also proper functioning for a long time under abominable physical environment, thereby improve the goal of the invention in the working life of product, the technological scheme that the present invention takes is:
The booster pump of engineering machinery braking system provided by the present invention, wherein, described cylinder adopts the diaphragm type cylinder, promptly establishes diaphragm 2 in the cylinder shell 7 of described cylinder, and described pallet assembly 3 is connected with described piston rod 6.
The present invention is optimized and improves traditional engineering machinery braking system booster pump, adopts diaphragm structure, makes product also proper functioning for a long time under abominable physical environment, thus the working life of raising product.
Establish return spring 4 in the above-described cylinder, described return spring 4 is a spiral tower shape pressure spring, and its big end is fixed on the cylinder shell 7 by spring seat 9, and its small end is supported by stage clip pallet assembly 3, and is connected with described diaphragm 2.
Stage clip pallet assembly 3 is connected with the interior hexagonal oncomelania band glue of piston rod 6 by M12; Adopt fastening screw nut 8, hydraulic cylinder 16 firmly is connected with cylinder shell 7.
Oil storage cup 11 of the present invention is established push rod 19 with the oil hydraulic cylinder joint, and described push rod 19 is oil storage cup 11 is communicated with valve with oil hydraulic cylinder a spool.The end of hydraulic piston is provided with the flange that cooperates with push rod 19, and when hydraulic piston compressed, push rod 19 was communicated with the valve sealing with oil hydraulic cylinder; When hydraulic piston was return, push rod 19 was communicated with valve open with oil hydraulic cylinder.
Adopt 15 sealings of Sealing group between the hydraulic cylinder 16 of piston rod 6 of the present invention and described oil hydraulic cylinder.The connection of Sealing group 15 has guaranteed the sealing of whole liquid chamber.
Cylinder of the present invention is established cap assembly 1, and the outward edge of described diaphragm 2 is clamped by described cylinder shell 7 and cap assembly 1, and the binding site of described hydraulic cylinder 16 and cylinder shell 7 clamps by fastening screw nut 8.
Under the effect of return spring 4, being connected of the push rod 19 of the rear end of piston rod 6 and oil-feed plug screw assembly 10 guarantees that brake fluid flows into the unobstructed of liquid chamber; Cap assembly 1 and diaphragm 2 and cylinder shell 7 have constituted the profile of whole booster pump air chamber by the clamping of clip 5.
Working principle and working procedure:
During braking, cross suction port 17 from the Pneumatic pipe cleaner of air brake valve air outlet and enter in the air chamber, the promotion of powerful air pressure makes diaphragm 2 distortion, pushes ahead; Stage clip pallet assembly 3 is because the effect of diaphragm 2 is advanced its promotion piston rod 6 one in the same way in the liquid chamber; Along with moving of piston rod 6, the push rod 19 of oil-feed valve is in the restriction that no longer is subjected to piston rod 6, push rod 19 throttle downs, build-up pressure in the liquid chamber, the liquid chamber internal pressure raises gradually, forms high pressure oil at hydraulic cylinder 16 inner chambers, and high pressure oil enters break by oil outlet 18; When brake off, when pressure discharges, piston rod 6 is opened valve by push rod 19, and under the effect of return spring 4, brake fluid returns in the oil storage cup 11.
Technological scheme of the present invention changes the Placement of air chamber, adopts diaphragm structure, mainly relies on air pressure to make diaphragm deformation promote piston motion during work, the gentle indoor dust that enters of the pollution of source of the gas etc. to the booster pump air chamber without any influence; The entering and refluxing of cut-off type oiling valve gate control brake fluid, liquid chamber brake fluid volume changes little during work, therefore during the brake fluid motion in the oil storage cup liquid level motionless substantially, effectively avoided dust to enter generation with bubble, strengthened the stability of braking system.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technological scheme carry out; or design of the present invention and technological scheme are directly applied to other occasion without improving, all within protection scope of the present invention.

Claims (5)

1. the booster pump of an engineering machinery braking system comprises cylinder, oil hydraulic cylinder and oil storage cup (11), and the suction port of described cylinder (17) links to each other with the air outlet of compressed air pump; The oil outlet of described oil hydraulic cylinder (18) links to each other with the filler opening of brake plunger oil cylinder, it is characterized in that: described cylinder adopts the diaphragm type cylinder, be to establish diaphragm (2) in the cylinder shell (7) of described cylinder, described diaphragm (2) is connected with described piston rod (6) by pallet assembly (3).
2. according to the booster pump of the described engineering machinery braking system of claim 1, it is characterized in that: establish return spring (4) in the described cylinder, described return spring (4) is a spiral tower shape pressure spring, its big end is fixed on the cylinder shell (7) by spring seat (9), its small end is supported by stage clip pallet assembly (3), and is connected with described diaphragm (2).
3. according to the booster pump of the described engineering machinery braking system of claim 1, it is characterized in that: described oil storage cup (11) is established push rod (19) with the oil hydraulic cylinder joint, and described push rod (19) is oil storage cup (11) is communicated with valve with oil hydraulic cylinder a spool.
4. according to the booster pump of the described engineering machinery braking system of claim 1, it is characterized in that: adopt Sealing group (15) sealing between the hydraulic cylinder (16) of described piston rod (6) and described oil hydraulic cylinder.
5. according to the booster pump of the described engineering machinery braking system of claim 1, it is characterized in that: described cylinder is established cap assembly (1), the outward edge of described diaphragm (2) is clamped by described cylinder shell (7) and cap assembly (1), and the binding site of described hydraulic cylinder (16) and cylinder shell (7) clamps by fastening screw nut (8).
CN201010571014A 2010-12-02 2010-12-02 Booster pump for engineering mechanical brake system CN102022309B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010571014A CN102022309B (en) 2010-12-02 2010-12-02 Booster pump for engineering mechanical brake system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010571014A CN102022309B (en) 2010-12-02 2010-12-02 Booster pump for engineering mechanical brake system

Publications (2)

Publication Number Publication Date
CN102022309A true CN102022309A (en) 2011-04-20
CN102022309B CN102022309B (en) 2012-09-05

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102529930A (en) * 2011-12-30 2012-07-04 晋江市升泰机械配件有限公司 Air booster pump of engineering mechanical brake system
CN102536923A (en) * 2012-01-11 2012-07-04 瑞立集团瑞安汽车零部件有限公司 Air booster pump oil storage cup and manufacturing process thereof
CN102673549A (en) * 2012-05-16 2012-09-19 芜湖环球汽车配件有限公司 Oil cup cover for air booster pumps
CN104442770A (en) * 2012-01-11 2015-03-25 瑞立集团瑞安汽车零部件有限公司 Method for manufacturing air booster pump oil storage cup
CN105416261A (en) * 2015-12-17 2016-03-23 芜湖盛力科技股份有限公司 Air-over-hydraulic air boosting pump of loader

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5141295A (en) * 1988-05-09 1992-08-25 Alfred Teves Gmbh Brake power booster with diaphragm position sensing devices
CN2352716Y (en) * 1998-12-10 1999-12-08 福州大学液压件厂 Force increased pump
CN1648448A (en) * 2005-02-19 2005-08-03 李玉喜 Gas-oil combined booster pump
CN201228619Y (en) * 2008-06-14 2009-04-29 芜湖盛力制动有限责任公司 Air enforcing pump
CN201916169U (en) * 2010-12-02 2011-08-03 芜湖盛力制动有限责任公司 Intensifier pump of engineering mechanical braking system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5141295A (en) * 1988-05-09 1992-08-25 Alfred Teves Gmbh Brake power booster with diaphragm position sensing devices
CN2352716Y (en) * 1998-12-10 1999-12-08 福州大学液压件厂 Force increased pump
CN1648448A (en) * 2005-02-19 2005-08-03 李玉喜 Gas-oil combined booster pump
CN201228619Y (en) * 2008-06-14 2009-04-29 芜湖盛力制动有限责任公司 Air enforcing pump
CN201916169U (en) * 2010-12-02 2011-08-03 芜湖盛力制动有限责任公司 Intensifier pump of engineering mechanical braking system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102529930A (en) * 2011-12-30 2012-07-04 晋江市升泰机械配件有限公司 Air booster pump of engineering mechanical brake system
CN102536923A (en) * 2012-01-11 2012-07-04 瑞立集团瑞安汽车零部件有限公司 Air booster pump oil storage cup and manufacturing process thereof
CN104442770A (en) * 2012-01-11 2015-03-25 瑞立集团瑞安汽车零部件有限公司 Method for manufacturing air booster pump oil storage cup
CN102536923B (en) * 2012-01-11 2015-12-23 瑞立集团瑞安汽车零部件有限公司 A kind of air boosting pump oil storage cup and manufacture method thereof
CN102673549A (en) * 2012-05-16 2012-09-19 芜湖环球汽车配件有限公司 Oil cup cover for air booster pumps
CN105416261A (en) * 2015-12-17 2016-03-23 芜湖盛力科技股份有限公司 Air-over-hydraulic air boosting pump of loader

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Publication number Publication date
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Owner name: WUHU SHENGLI TECHNOLOGY CO., LTD

Free format text: FORMER NAME: SHENGLI BRAKE CO., LTD., WUHU

CP03 Change of name, title or address

Address after: 241003 No. 17 West Mountain Road, hi tech Industrial Development Zone, Anhui, Wuhu

Patentee after: Wuhu Shengli Technology Shares Co., Ltd.

Address before: 241003 No. 8, Jinshan Road, hi tech Industrial Development Zone, Yijiang District, Anhui, Wuhu

Patentee before: Shengli Brake Co., Ltd., Wuhu