CN202429190U - Air booster pump of brake system of engineering machinery - Google Patents
Air booster pump of brake system of engineering machinery Download PDFInfo
- Publication number
- CN202429190U CN202429190U CN2011205316708U CN201120531670U CN202429190U CN 202429190 U CN202429190 U CN 202429190U CN 2011205316708 U CN2011205316708 U CN 2011205316708U CN 201120531670 U CN201120531670 U CN 201120531670U CN 202429190 U CN202429190 U CN 202429190U
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- way valve
- air
- cylinder
- booster pump
- check valve
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model discloses an air booster pump of a brake system of engineering machinery. The air booster pump comprises an air cylinder and a brake cylinder; the air cylinder comprises an air cylinder housing, an air piston, an air piston return spring and an oil cylinder connection cover; a piston rod of the air piston passes through the hole in the oil cylinder connection cover to be connected with an oil piston of the brake cylinder; the air cylinder is provided with a rod-less cavity and a rod cavity; an air inlet of the air booster pump is communicated with the rod-less cavity of the air cylinder; a two-way valve assembly is arranged on the air piston; and a one-way valve assembly (5) is arranged on the oil cylinder connection cover. By adopting the technical scheme, according to the operating principle of the one-way valve and the two-way valve, the dust gas of the external severe environment cannot enter the gas cavity due to the structure of the internal-breathing type booster pump, so if only the air source is clean, the inner part of the air cylinder is protected from pollution, and also, the cleanness of the air cavity is ensured; and the premature wear of a leather ring of the air piston is avoided, so that the reliability and endurance of the product are enhanced.
Description
Technical field
The utility model belongs to the technical field of construction machinery and equipment, relates to the technology of the brake system of construction machinery and equipment, and more particularly, the utility model relates to a kind of construction machinery and equipment brake system air booster pump.
Background technology
Because the work under bad environment of loader, present booster pump of the prior art, its respirator can not be fully and isolate from outer air, and the cylinder block internal contamination is serious, causes gas piston apron premature wear, the reduction durability of products.
The utility model content
The utility model problem to be solved provides a kind of construction machinery and equipment brake system air booster pump, and the purpose of its invention is to improve air booster pump reliability of products.
To achieve these goals, the technical scheme taked of the utility model is:
The construction machinery and equipment brake system air booster pump that the utility model provided comprises cylinder and brake cylinder, and described cylinder comprises cylinder shell, gas piston, gas piston return spring, oil cylinder connection cover; Described cylinder shell is connected with described brake cylinder through the oil cylinder connection cover; Described gas piston return spring two ends contact with the end face of gas piston, oil cylinder connection cover respectively; The piston rod of described gas piston passes the hole of described oil cylinder connection cover, is connected with the oily piston of described brake cylinder, and described cylinder forms rodless cavity and rod chamber; The admission port of described air booster pump is communicated with the rodless cavity of described cylinder; Establish the two-way valve assembly on the described gas piston; Establish the check valve assembly on the described oil cylinder connection cover.
Described two-way valve assembly and described gas piston are through being threaded, and described two-way valve assembly is installed on the end face of rod chamber at described gas piston; On described two-way valve assembly and described gas piston end face joint face, establish packing ring; Described two-way valve assembly comprises two-way valve valve body, two-way valve spool, and the two ends of described two-way valve spool are respectively equipped with first pull back spring and second pull back spring.
Described second pull back spring is located at the two-way valve spool towards described rodless cavity one end; Described second pull back spring is installed on the described two-way valve valve body with back-up ring through two-way valve spring perch and two-way valve opening; Described two-way valve spring perch is provided with filter screen structure.
Described check valve assembly and described oil cylinder connection cover are through being threaded; Described check valve assembly is installed on end face opposite with cylinder on the described oil cylinder connection cover, and its installation site is in the outside of described brake cylinder; Described check valve assembly comprises check valve valve body, check valve spool, and a described check valve spool end outwardly is provided with the nonreturn valve core pull back spring.
Described nonreturn valve core pull back spring is installed on the described check valve valve body with back-up ring through check valve spring seat and unidirectional valve opening; Described check valve spring seat is provided with filter screen structure.
The utility model adopts technique scheme, utilizes the principle of work of check valve and two-way valve, adopts the afterburning pump structure of internal respiration formula; Air chamber intracavity gas only export but no import, source of the gas are fully from Air compressor, and the dusty gas of extraneous harsh environment can not get into air chamber; As long as guarantee the source of the gas cleaning, cylinder block is interior not contaminated with regard to guaranteeing, has just guaranteed the cleaning of air chamber yet; Overcome the premature wear of gas piston apron, improved reliability of products and durability.
Description of drawings
The mark of facing down among expressed content of each width of cloth accompanying drawing of this specification sheets and the figure is made brief description:
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the scheme drawing that the two-way valve assembly structure among Fig. 1 amplifies;
Fig. 3 is the scheme drawing that the check valve assembly structure among Fig. 1 amplifies.
Be labeled as among Fig. 1: 1, gas piston, 2, packing ring, 3, the two-way valve assembly, 4, the gas piston return spring, 5, the check valve assembly; 6, oil cylinder connection cover, 7, the two-way valve valve body, 8, first pull back spring, 9, the two-way valve spool; 10, second pull back spring, 11, the two-way valve spring perch, 12, two-way valve opening uses back-up ring, 13, the check valve valve body; 14, check valve spool, 15, the nonreturn valve core pull back spring, 16, the check valve spring seat, 17, unidirectional valve opening uses back-up ring.
The specific embodiment
Contrast accompanying drawing below,, the specific embodiment of the utility model is done further detailed explanation, inventive concept, the technical scheme of the utility model are had more complete, accurate and deep understanding to help those skilled in the art through description to embodiment.
Structure like the expressed the utility model of Fig. 1, Fig. 2 and Fig. 3; The utility model is a kind of construction machinery and equipment brake system air booster pump; Comprise cylinder and brake cylinder, described cylinder comprises cylinder shell, gas piston 1, gas piston return spring 4, oil cylinder connection cover 6; Described cylinder shell is connected with described brake cylinder through oil cylinder connection cover 6; Described gas piston return spring 4 two ends contact with the end face of gas piston 1, oil cylinder connection cover 6 respectively; The piston rod of described gas piston 1 passes the hole of described oil cylinder connection cover 6, is connected with the oily piston of described brake cylinder, and described cylinder forms rodless cavity and rod chamber; The admission port of described air booster pump is communicated with the rodless cavity of described cylinder.
Air booster pump admission port links to each other with air brake valve (original a kind of valve in the system) air extractor duct, and oil outlet links to each other with the drg oil inlet.
The two-way valve assembly is connected with the gas piston with packing ring through screw thread, and the check valve assembly is connected with the booster pump connection cover through screw thread.
One, inventive concept of the utility model and creative the analysis:
In order to solve the problem that exists at the described present known technology of this specification sheets background technology part and to overcome its defective, realize improving the goal of the invention of air booster pump reliability of products, the technical scheme that the utility model is taked is:
Construction machinery and equipment brake system air booster pump as shown in Figure 1, that the utility model provided is established two-way valve assembly 3 on the described gas piston 1; Establish check valve assembly 5 on the described oil cylinder connection cover 6.
The utility model utilizes the principle of work of check valve and two-way valve, design internal respiration formula booster pump, air chamber intracavity gas only export but no import; From Air compressor,, just can guarantee not contaminated in the cylinder block fully as long as guarantee the source of the gas cleaning; Strengthen durability of product, improve reliability of products.
Two, the static position of each parts of the utility model relation:
The two-way valve structure:
As depicted in figs. 1 and 2, described two-way valve assembly 3 and described gas piston 1 are through being threaded, and described two-way valve assembly 3 is installed on the end face of rod chamber at described gas piston 1; On the end face joint face of described two-way valve assembly 3 and described gas piston 1, establish packing ring 2; Described two-way valve assembly 3 comprises two-way valve valve body 7, two-way valve spool 9, and the two ends of described two-way valve spool 9 are respectively equipped with first pull back spring 8 and second pull back spring 10.
Described second pull back spring 10 is located at two-way valve spool 9 towards described rodless cavity one end; Described second pull back spring 10 is installed on the described two-way valve valve body 7 with back-up ring 12 through two-way valve spring perch 11 and two-way valve opening; Described two-way valve spring perch 11 is provided with filter screen structure.
One-way valve structures:
Described check valve assembly 5 and described oil cylinder connection cover 6 are through being threaded; Described check valve assembly 5 is installed on end face opposite with cylinder on the described oil cylinder connection cover 6, and its installation site is in the outside of described brake cylinder; Described check valve assembly 5 comprises check valve valve body 13, check valve spool 14, and described check valve spool 14 end outwardly is provided with nonreturn valve core pull back spring 15.
Described nonreturn valve core pull back spring 15 is installed on the described check valve valve body 13 with back-up ring 17 through check valve spring seat 16 and unidirectional valve opening; Described check valve spring seat 16 is provided with filter screen structure.
Between the gas piston 1 and booster pump connection cover 6 in the air booster pump, establish pull back spring 4.
Two-way valve assembly 3 is connected with the gas piston 1 of booster pump with packing ring 2 through outside thread, and check valve assembly 5 is connected with booster pump connection cover 6 through the valve body outside thread.
In two-way valve assembly 3, first pull back spring 8, two-way valve spool 9, second pull back spring 10, spring perch 11 are contained in the two-way valve valve body 7 successively, and be spacing fixing with back-up ring 12 through the hole.
In check valve assembly 5, check valve spool 14, nonreturn valve core pull back spring 15, spring perch are contained in the valve body 2 successively, and be spacing fixing with back-up ring through the hole.
Three, each parts of the utility model concern and principle of work at the dynamic position of work:
Glancing impact from the air pressure of air brake valve air extractor duct, enters into the A chamber of cylinder assembly through the admission port of air booster pump; Close the two-way valve spool 9 of two-way valve assembly 3; Air pressure promotes gas piston 1 assembly reach (moving right), and B chamber gas is compressed, and produces certain pressure; Open the check valve spool of check valve assembly 5, B chamber gas exhaust to atmosphere.
During brake off, A chamber air pressure drops to zero, and two-way valve spool 9 is opened under the effect of first pull back spring 8; A, B chamber communicate; B chamber air pressure drops to zero, and check valve spool 14 is closed under the effect of nonreturn valve core pull back spring 15, blocks outside unclean gas and gets into air chamber.
Four, the utility model improves and effect:
1, booster pump cancellation air breather assembly, the check valve assembly changes the outfit.
2, increase the two-way valve assembly on the gas piston.
The beneficial effect of the utility model:
The utility model utilizes the principle of work of check valve and two-way valve; Design internal respiration formula booster pump, air chamber intracavity gas be fully from Air compressor, only export but no import; The dusty gas of extraneous harsh environment can not get into air chamber; Guarantee the cleaning of air chamber, overcome the premature wear of gas piston apron, strengthen durability of product.
Combine accompanying drawing that the utility model has been carried out exemplary description above; Obviously the concrete realization of the utility model does not receive the restriction of aforesaid way; As long as adopted the method design of the utility model and the improvement of the various unsubstantialities that technical scheme is carried out; Or the design of the utility model and technical scheme are directly applied to other occasion without improving, all within the protection domain of the utility model.
Claims (5)
1. a construction machinery and equipment brake system air booster pump comprises cylinder and brake cylinder, and described cylinder comprises cylinder shell, gas piston (1), gas piston return spring (4), oil cylinder connection cover (6); Described cylinder shell is connected with described brake cylinder through oil cylinder connection cover (6); Described gas piston return spring (4) two ends contact with the end face of gas piston (1), oil cylinder connection cover (6) respectively; The piston rod of described gas piston (1) passes the hole of described oil cylinder connection cover (6), is connected with the oily piston of described brake cylinder, and described cylinder forms rodless cavity and rod chamber; The admission port of described air booster pump is communicated with the rodless cavity of described cylinder;
It is characterized in that:
Establish two-way valve assembly (3) on the described gas piston (1); Establish check valve assembly (5) on the described oil cylinder connection cover (6).
2. according to the described construction machinery and equipment brake system air of claim 1 booster pump, it is characterized in that:
Described two-way valve assembly (3) and described gas piston (1) are through being threaded, and described two-way valve assembly (3) is installed on the end face of rod chamber at described gas piston (1);
On the end face joint face of described two-way valve assembly (3) and described gas piston (1), establish packing ring (2);
Described two-way valve assembly (3) comprises two-way valve valve body (7), two-way valve spool (9), and the two ends of described two-way valve spool (9) are respectively equipped with first pull back spring (8) and second pull back spring (10).
3. according to the described construction machinery and equipment brake system air of claim 2 booster pump, it is characterized in that: described second pull back spring (10) is located at two-way valve spool (9) towards described rodless cavity one end; Described second pull back spring (10) is installed on the described two-way valve valve body (7) with back-up ring (12) through two-way valve spring perch (11) and two-way valve opening; Described two-way valve spring perch (11) is provided with filter screen structure.
4. according to claim 1 or 2 or 3 described construction machinery and equipment brake system air booster pumps, it is characterized in that:
Described check valve assembly (5) and described oil cylinder connection cover (6) are through being threaded; Described check valve assembly (5) is gone up on the end face opposite with cylinder at described oil cylinder connection cover (6) and is installed, and its installation site is in the outside of described brake cylinder;
Described check valve assembly (5) comprises check valve valve body (13), check valve spool (14), and described check valve spool (a 14) end outwardly is provided with nonreturn valve core pull back spring (15).
5. according to the described construction machinery and equipment brake system air of claim 4 booster pump, it is characterized in that: described nonreturn valve core pull back spring (15) is installed on the described check valve valve body (13) with back-up ring (17) through check valve spring seat (16) and unidirectional valve opening; Described check valve spring seat (16) is provided with filter screen structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205316708U CN202429190U (en) | 2011-12-19 | 2011-12-19 | Air booster pump of brake system of engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205316708U CN202429190U (en) | 2011-12-19 | 2011-12-19 | Air booster pump of brake system of engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202429190U true CN202429190U (en) | 2012-09-12 |
Family
ID=46778660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205316708U Expired - Fee Related CN202429190U (en) | 2011-12-19 | 2011-12-19 | Air booster pump of brake system of engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202429190U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN111212770A (en) * | 2017-10-19 | 2020-05-29 | 罗伯特·博世有限公司 | Automatic braking device for a vehicle and method for automatically braking a vehicle |
-
2011
- 2011-12-19 CN CN2011205316708U patent/CN202429190U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111212770A (en) * | 2017-10-19 | 2020-05-29 | 罗伯特·博世有限公司 | Automatic braking device for a vehicle and method for automatically braking a vehicle |
| US11254295B2 (en) | 2017-10-19 | 2022-02-22 | Robert Bosch Gmbh | Automatic braking device for a vehicle and method for automatically braking a vehicle |
| CN111212770B (en) * | 2017-10-19 | 2022-04-29 | 罗伯特·博世有限公司 | Automatic braking device for a vehicle and method for automatically braking a vehicle |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WUHU SHENGLI TECHNOLOGY CO., LTD Free format text: FORMER NAME: SHENGLI BRAKE CO., LTD., WUHU |
|
| CP03 | Change of name, title or address | ||
| 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 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20151219 |
|
| EXPY | Termination of patent right or utility model |