CN104386049A - Air-assisted hydraulic brake air assistor for engineering machinery - Google Patents
Air-assisted hydraulic brake air assistor for engineering machinery Download PDFInfo
- Publication number
- CN104386049A CN104386049A CN201410799201.2A CN201410799201A CN104386049A CN 104386049 A CN104386049 A CN 104386049A CN 201410799201 A CN201410799201 A CN 201410799201A CN 104386049 A CN104386049 A CN 104386049A
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- Prior art keywords
- piston
- air
- push rod
- hydraulic piston
- brake air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses an air-assisted hydraulic brake air assistor for engineering machinery. The air-assisted hydraulic brake air assistor comprises a cylinder block, an air piston, a boosting oil cylinder barrel and a hydraulic piston; the air piston and the hydraulic piston are connected through a push rod; the push rod is connected with the hydraulic piston through a push rod seat; a valve assembly is arranged on the hydraulic piston; a piston leather ring is arranged on the air piston; oil seal rubber arranged on the valve assembly is fixed on the oil seal rubber seat; the oil seal rubber seat is fixed on the hydraulic piston through an inner hole clamp ring. After the technical scheme is adopted, the product structure is simplified, the assembly weight is reduced, the lathe machining procedures are lessened, the cost is reduced, the production period is shortened, and the production efficiency is improved; meanwhile, the product productivity and the product performance are improved, the service life of the assembly is prolonged, and users can be satisfied; besides, the inner hole surface texture of the cylinder block is improved, the defects such as sand air holes are avoided, the product performance is greatly improved, and a foundation is laid for mass equipment of all types of vehicles.
Description
Technical field
The invention belongs to the technical field of construction machinery and equipment structure, particularly large-tonnage fork truck braking device.More specifically, the present invention relates to a kind of construction machinery and equipment gas cap liquid brake air assistor.
Background technology
Shown in Fig. 1 and Fig. 2 is the structure of air assistor of the prior art.It comprises:
Cylinder block 19, gas piston assembly 18; Pressurizing cylinder cylinder barrel 3, hydraulic piston assembly 6; Cylinder block 19 is fixedly connected with by cylinder end piece 11 with pressurizing cylinder cylinder barrel 3; Cylinder end piece 11 and cylinder block 19 are sealed by cylinder packing circle 12;
The material of cylinder block 19 is aluminium casting;
Described cylinder end piece 11 is fastenedly connected by many group thru-bolt 33, nut 34 and packing ring 35;
Pressurizing cylinder cylinder barrel 3 is fastenedly connected by jam nut 4 and cylinder end piece 11, and realizes sealing by rectangular seal 5; Between pressurizing cylinder cylinder barrel 3 and cylinder end piece 11, also realize sealing by O RunddichtringO 9;
Other one end of pressurizing cylinder cylinder barrel 3, arranges pressurizing cylinder end cap assembly 1; Described pressurizing cylinder end cap assembly 1 realizes sealing by tightening seal washer 2 and pressurizing cylinder cylinder barrel 3;
Packing ring 10 is set in pressurizing cylinder cylinder barrel 3, realizes the axial limiting of hydraulic piston assembly 6;
Gas piston assembly 18 when not braking, makes it reset by piston return spring 21;
Gas piston assembly 18 is connected by push rod with hydraulic piston assembly 6; Described push rod is fixed on hydraulic piston assembly 6 by ram seat assembly 7;
Ram seat assembly 7 carries out axial connection by the back-up ring 8 in hydraulic piston assembly 6 endoporus;
Push rod is arranged central seal circle 15, packing ring 14 is set in its end, and back-up ring 13 is set in the hole of cylinder end piece 11, realize the axial limiting of central seal circle 15 and packing ring 14;
The fitting surface of push rod and cylinder end piece 11 also arranges an O RunddichtringO 16, realizes sealing;
Cylinder block 19 is provided with air breather assembly 36; Also be provided with the toggle joint 22 of turnover gas; Described toggle joint 22 is locked on cylinder block 19 by jam nut 21; And realize sealing by safety valve packing ring 20;
At the center of the outside face of the end closed of cylinder block 19, hexagonal thru-bolt 24 is set, is connected with cylinder block 19 coaxial threaded, and is locked by jam nut, sealed by O RunddichtringO 23;
On the outside face of the end closed of cylinder block 19, be also provided with plug screw 26, and sealed by O RunddichtringO 25;
Cylinder block 19 is also provided with the position limiting structure of gas piston assembly 18, comprises position-limited lever 31, pocketed springs 30 on position-limited lever 31; At the inner end of position-limited lever 31, nut 27, packing ring 29 and spring washer 28 are set, make spring 30 axial limiting; Relevant position outside cylinder block 19, arranges big envelope 32, makes position-limited lever 31 sponson, not by ectocine.
In the above prior art, the ram seat forward sealing of air boosting pump hydraulic cavities, product is when return, and the rubber that the high pressure oil in pipeline impacts in ram seat causes breakage, causes seal failure, thus causes brake failure.
In addition, the outward appearance of air assistor is coarse, and product is heavy, and cost is higher.Ram seat assembly 7 easily comes off, and causes oil outlet without pressure, has a strong impact on braking and assembly service life.
Summary of the invention
The invention provides a kind of construction machinery and equipment gas cap liquid brake air assistor, its objective is the reliability improving product.
To achieve these goals, the technical scheme that the present invention takes is:
Construction machinery and equipment gas cap liquid brake air assistor of the present invention, comprise cylinder block, gas piston, pressurizing cylinder cylinder barrel, hydraulic piston, described gas piston is connected by push rod with hydraulic piston, and described push rod is connected with hydraulic piston by ram seat; Described hydraulic piston is provided with valve assembly; Described gas piston is provided with gas Piston leather collar;
Oil sealing rubber on described valve assembly, is fixed on oil sealing rubber base, and described oil sealing rubber base is fixed on hydraulic piston by endoporus collar.
The end face of described push rod contacts with ram seat, and its contact surface is the cambered surface that the end face of push rod protrudes.
Described cylinder block is steel plate punched tensioning member.
Described steel plate thickness is 2.5mm.
The surface that described gas piston coordinates with cylinder block is provided with the gas piston oil resevoir of annular.
On the surface that described gas Piston leather collar contacts with cylinder block, be provided with apron oil resevoir.
Described push rod, ram seat are connected by horizontal straight pin.
The two ends of described straight pin are fixed in the circular groove of hydraulic piston by coil spring.
The present invention adopts technique scheme, simplifies product structure, alleviates assembly weight, reduces Vehicle Processing operation, reduces costs, shorten the production cycle, enhance productivity; Improve production capacity and the performance of product, improve the service life of assembly, make user satisfied; Improve cylinder body inner hole surface quality, it also avoid the shortcomings such as sand pore, properties of product can be greatly improved, and equip in enormous quantities lay the foundation for various vehicle simultaneously.
Accompanying drawing explanation
Below the content expressed by each width accompanying drawing of this specification sheets and the mark in figure are briefly described:
Fig. 1 is the structural representation of prior art;
Fig. 2 is the structural representation that the A-A in Fig. 1 analyses and observe.
Be labeled as in Fig. 1 and Fig. 2:
1, pressurizing cylinder end cap assembly, 2, tightening seal washer, 3, pressurizing cylinder cylinder barrel, 4, jam nut, 5, rectangular seal, 6, hydraulic piston assembly, 7, ram seat assembly, 8, back-up ring (15), 9, O RunddichtringO (35.3 × 3.55), 10, packing ring, 11, cylinder end piece, 12, cylinder packing circle, 13, back-up ring (30), 14, packing ring, 15, central seal circle, 16, O RunddichtringO (17 × 2.65), 17, piston return spring, 18, gas piston assembly, 19, cylinder block, 20, safety valve packing ring, 21, jam nut (M16 × 1.5), 22, toggle joint, 23, O RunddichtringO (9.5 × 1.8), 24, hexagonal thru-bolt, 25, O RunddichtringO, 26, plug screw, 27, nut (M6), 28, packing ring (6), 29, packing ring, 30, spring, 31, position-limited lever, 32, big envelope, 33, thru-bolt, 34, nut (M10 × 1), 35 packing rings (10), 36, air breather assembly.
Fig. 3 is structural representation of the present invention;
Fig. 4 is the structural representation that the A-A in Fig. 3 analyses and observe;
Fig. 5 is the schematic diagram of the amplification of B position in Fig. 4;
Fig. 6 is the schematic diagram that oil resevoir on the gas piston in Fig. 4 and circle oil resevoir amplify.
Being labeled as in Fig. 3 to Fig. 6:
1, pressurizing cylinder cylinder barrel, 2, valve assembly, 3, ram seat, 4, cylinder block, 5, gas piston, 6, gas Piston leather collar, 7, straight pin, 8, gas piston oil resevoir, 9, apron oil resevoir, 10, pull back spring, 11, hydraulic piston, 12, push rod, 13, respirator, 14, oil sealing rubber, 15, oil sealing rubber base, 16, coil spring.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technical scheme.
Structure of the present invention represented by Fig. 3, Fig. 4, Fig. 5 and Fig. 6, for a kind of construction machinery and equipment gas cap liquid brake air assistor, comprise cylinder block 4, gas piston 5, pressurizing cylinder cylinder barrel 1, hydraulic piston 11, described gas piston 5 is connected by push rod 12 with hydraulic piston 11, and described push rod 12 is connected with hydraulic piston 11 by ram seat 3; Described hydraulic piston 11 is provided with valve assembly 2; Described gas piston 5 is provided with gas Piston leather collar 6.
In order to improve the reliability of product, the present invention carries out Transform Type design and update to the structure of existing product, reduces costs, improving SNR, avoid the low phenomenon of oil outlet pressure and product appearance and reach the requirements such as user is satisfied, thus the performance and used life of raising product.
Principle of work of the present invention is: start source of the gas, and to admission port input 784kPa air pressure, oil outlet pressure is 18.4MPa, enters main frame brake clamp thus produces braking; When pressure is released, under the effect of pull back spring, braking liquid liquid returns lubricating cup.
In order to solve prior art Problems existing and overcome its defect, realize the goal of the invention of the reliability improving product, the technical scheme that the present invention takes is:
As shown in Figures 3 to 6, construction machinery and equipment gas cap liquid brake air assistor of the present invention, the oil sealing rubber 14 on described valve assembly 2, is fixed on oil sealing rubber base 15, and described oil sealing rubber base 15 is fixed on hydraulic piston 11 by endoporus collar.
Supercharging cylinder barrel overall length shortens 50mm, thus alleviates assembly weight, reduces cost.
The present invention changes the sealing of the forward of the oil sealing rubber 14 on valve assembly 2 into side surface direction sealing.Change the direction in rubber seal face, avoid high pressure oil to the frontal impact of caulking gum, thus improve the service life of product.
Valve assembly Curve guide impeller, can improve the service life of assembly, makes user satisfied.
The end face of described push rod 12 contacts with ram seat 3, and its contact surface is the cambered surface that the end face of push rod 12 protrudes.Ram seat Curve guide impeller, can improve the service life of assembly, makes user satisfied.
Described cylinder block 4 is steel plate punched tensioning member.Described steel plate thickness is 2.5mm.
It is 2.5mm steel plate punched drawing part that the material of cylinder block 4 changes thickness of slab into by original aluminium casting, reduce Vehicle Processing operation, interior hole machined adopts special glazing machine to carry out polishing, cost-saved, enhance productivity and endoporus roughness, it also avoid the shortcomings such as sand pore, properties of product can be greatly improved simultaneously.
As shown in Figure 6:
The surface that described gas piston 5 coordinates with cylinder block 4 is provided with the gas piston oil resevoir 8 of annular.Gas piston 5 carries out Curve guide impeller, adds oil resevoir, works long hours and makes gas piston lubrication more lasting, can improve the service life of assembly, make user satisfied.
On the surface that described gas Piston leather collar 6 contacts with cylinder block 4, be provided with apron oil resevoir 9.Gas Piston leather collar 6 carries out brand-new design, adds oil resevoir, and the sealing amount of being full of strengthens and work edge mouth-shaped Curve guide impeller, can improve the service life of assembly, makes user satisfied.
As shown in Figure 5:
Described push rod 12, ram seat 3 are connected by horizontal straight pin 7.Adopt straight pin 7 to connect, ram seat 3 can be avoided to come off, improve the service life of assembly, make user satisfied.
The two ends of described straight pin 7 are fixed in the circular groove of hydraulic piston 11 by coil spring 16.
This invention simplifies product structure, shorten the production cycle, improve production capacity and the performance of product, reduce purchase cost, equip in enormous quantities for various vehicle and lay the foundation.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (8)
1. a construction machinery and equipment gas cap liquid brake air assistor, comprise cylinder block (4), gas piston (5), pressurizing cylinder cylinder barrel (1), hydraulic piston (11), described gas piston (5) is connected by push rod (12) with hydraulic piston (11), and described push rod (12) is connected with hydraulic piston (11) by ram seat (3); Described hydraulic piston (11) is provided with valve assembly (2); Described gas piston (5) is provided with gas Piston leather collar (6);
It is characterized in that:
Oil sealing rubber (14) on described valve assembly (2), is fixed on oil sealing rubber base (15), and described oil sealing rubber base (15) is fixed on hydraulic piston (11) by endoporus collar.
2. according to construction machinery and equipment gas cap liquid brake air assistor according to claim 1, it is characterized in that: the end face of described push rod (12) contacts with ram seat (3), its contact surface is the cambered surface that the end face of push rod (12) protrudes.
3. according to construction machinery and equipment gas cap liquid brake air assistor according to claim 1, it is characterized in that: described cylinder block (4) is steel plate punched tensioning member.
4., according to construction machinery and equipment gas cap liquid brake air assistor according to claim 3, it is characterized in that: described steel plate thickness is 2.5mm.
5. according to construction machinery and equipment gas cap liquid brake air assistor according to claim 1, it is characterized in that: the surface that described gas piston (5) coordinates with cylinder block (4) is provided with the gas piston oil resevoir (8) of annular.
6. according to construction machinery and equipment gas cap liquid brake air assistor according to claim 1, it is characterized in that: on the surface that described gas Piston leather collar (6) contacts with cylinder block (4), be provided with apron oil resevoir (9).
7. according to construction machinery and equipment gas cap liquid brake air assistor according to claim 1, it is characterized in that: described push rod (12), ram seat (3) are connected by horizontal straight pin (7).
8. according to construction machinery and equipment gas cap liquid brake air assistor according to claim 7, it is characterized in that: the two ends of described straight pin (7) are fixed in the circular groove of hydraulic piston (11) by coil spring (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410799201.2A CN104386049A (en) | 2014-12-20 | 2014-12-20 | Air-assisted hydraulic brake air assistor for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410799201.2A CN104386049A (en) | 2014-12-20 | 2014-12-20 | Air-assisted hydraulic brake air assistor for engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104386049A true CN104386049A (en) | 2015-03-04 |
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ID=52604039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410799201.2A Pending CN104386049A (en) | 2014-12-20 | 2014-12-20 | Air-assisted hydraulic brake air assistor for engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104386049A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972130A (en) * | 2015-03-11 | 2016-09-28 | 福特全球技术公司 | Braking systems including compressible medium to modify brake fluid pressure |
| CN106926834A (en) * | 2017-03-02 | 2017-07-07 | 首钢总公司 | A kind of Novel oil gas assistor |
| CN108973961A (en) * | 2018-09-27 | 2018-12-11 | 绍兴精致机械制造有限公司 | A kind of air booster |
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| CN201914237U (en) * | 2010-12-02 | 2011-08-03 | 芜湖盛力制动有限责任公司 | Air booster pump of engineering machinery brake system |
| CN202574198U (en) * | 2012-05-16 | 2012-12-05 | 芜湖环球汽车配件有限公司 | Hydraulic piston of air booster pump |
| CN202593493U (en) * | 2012-05-16 | 2012-12-12 | 芜湖环球汽车配件有限公司 | Air booster bump |
| CN202955159U (en) * | 2012-12-11 | 2013-05-29 | 四川制动科技股份有限公司 | Seal ring with oil storage function |
| 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 |
| CN204472780U (en) * | 2014-12-20 | 2015-07-15 | 芜湖盛力科技股份有限公司 | A kind of construction machinery and equipment gas cap liquid brake air assistor |
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2014
- 2014-12-20 CN CN201410799201.2A patent/CN104386049A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2644786Y (en) * | 2003-09-24 | 2004-09-29 | 中国嘉陵工业股份有限公司（集团） | Piston with oil sump |
| CN1654251A (en) * | 2005-03-13 | 2005-08-17 | 陈光华 | Manufacturing method of automobile hydraulic brake master cylinder |
| CN200943564Y (en) * | 2006-09-12 | 2007-09-05 | 石全德 | Air-boosting pump with improved structure |
| CN201170174Y (en) * | 2008-03-13 | 2008-12-24 | 石鹏 | Air stress application pump with new structure |
| CN201486791U (en) * | 2009-05-11 | 2010-05-26 | 芜湖盛力制动有限责任公司 | Air booster pump for vehicle braking |
| CN201914237U (en) * | 2010-12-02 | 2011-08-03 | 芜湖盛力制动有限责任公司 | Air booster pump of engineering machinery brake system |
| CN202574198U (en) * | 2012-05-16 | 2012-12-05 | 芜湖环球汽车配件有限公司 | Hydraulic piston of air booster pump |
| CN202593493U (en) * | 2012-05-16 | 2012-12-12 | 芜湖环球汽车配件有限公司 | Air booster bump |
| CN202955159U (en) * | 2012-12-11 | 2013-05-29 | 四川制动科技股份有限公司 | Seal ring with oil storage function |
| 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 |
| CN204472780U (en) * | 2014-12-20 | 2015-07-15 | 芜湖盛力科技股份有限公司 | A kind of construction machinery and equipment gas cap liquid brake air assistor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972130A (en) * | 2015-03-11 | 2016-09-28 | 福特全球技术公司 | Braking systems including compressible medium to modify brake fluid pressure |
| CN105972130B (en) * | 2015-03-11 | 2019-10-18 | 福特全球技术公司 | Braking system including adjusting the compressible medium of brake fluid pressure |
| CN106926834A (en) * | 2017-03-02 | 2017-07-07 | 首钢总公司 | A kind of Novel oil gas assistor |
| CN106926834B (en) * | 2017-03-02 | 2019-10-08 | 首钢集团有限公司 | A kind of Novel oil gas assistor |
| CN108973961A (en) * | 2018-09-27 | 2018-12-11 | 绍兴精致机械制造有限公司 | A kind of air booster |
| CN108973961B (en) * | 2018-09-27 | 2024-03-08 | 绍兴精致机械制造有限公司 | Air booster |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150304 |