CN102501846A - Pneumatic brake valve for engineering machinery - Google Patents
Pneumatic brake valve for engineering machinery Download PDFInfo
- Publication number
- CN102501846A CN102501846A CN2011104257618A CN201110425761A CN102501846A CN 102501846 A CN102501846 A CN 102501846A CN 2011104257618 A CN2011104257618 A CN 2011104257618A CN 201110425761 A CN201110425761 A CN 201110425761A CN 102501846 A CN102501846 A CN 102501846A
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- piston
- brake valve
- valve body
- valve
- air
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- Valves And Accessory Devices For Braking Systems (AREA)
- Details Of Valves (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The invention discloses a pneumatic brake valve for engineering machinery, which is connected with a pedal assembly (1) through a tappet (2). The pneumatic brake valve comprises a valve body (6), a piston (4) and a lower valve assembly (8), the valve body (6) is provided with an air inlet (11), an air outlet (12) and an exhaust outlet (14), the surface of the piston (4), which is matched with the valve body (6), is provided with two annular grooves (15), and an open guide ring (5) is arranged in each annular groove (15). After the technical scheme is adopted, the piston is guided by the two open guide rings at the position of Phi 50 when moving downward, and therefore is more stable; polyformaldehyde as guiding material is more wear-resistant; a breather arranged on the exhaust outlet can effectively filter the air and proof dust better, so that the service life of the product can be prolonged; and the pneumatic brake valve also can eliminate exhaust noise, thus realizing the function of environment protection.
Description
Technical field
The invention belongs to the technical field of construction machinery and equipment, relate to the brake system of construction machinery and equipment, more particularly, the present invention relates to a kind of single loop air brake valve of construction machinery and equipment.
Background technology
At present, the piston in the air brake valve of the prior art, in moving downward process, a guiding ruler cun φ 16 leads, and the guiding material is aluminium, causes serious wear like this, and the service life of product is low; The respirator of exhaust ports is fairly simple, can't adapt to the harsh environment of engineering truck, causes koniology, muddy water to be prone to get in the valve body, thereby causes product function to lose efficacy.
Summary of the invention
Problem to be solved by this invention provides a kind of air brake valve of construction machinery and equipment, its objective is the steering capability that improves piston.
To achieve these goals, the technical scheme taked of the present invention is:
The air brake valve of construction machinery and equipment provided by the present invention; Be connected with the stretcher assembly through tappet; Described air brake valve comprises valve body, piston, lower valve assembly, on valve body, is provided with admission port, air extractor duct and exhausr port, on described piston and surface that described valve body cooperates; Be provided with two circular grooves, be provided with an openings lead circle in each circular groove.
The material of described openings lead circle is a polyformaldehyde.
On the described exhausr port respirator is installed.
Two circular grooves are located at the position of described piston near two ends.
The present invention adopts technique scheme, and piston relies on two openings lead rings at size φ 50 places to lead in moving downward process, and is more stable; The guide material polyformaldehyde is more wear-resisting; Exhaust ports is provided with respirator, can the actv. filtered air, can better prevent dust, and improve the life-span of product; Can also eliminate exhaust noise, realize environment-friendly function.
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 a structural representation of the present invention;
Fig. 2 is the profile scheme drawing of structure shown in Figure 1 (removing pedal);
Fig. 3 is the piston guide structural representation among Fig. 1.
Be labeled as among the figure:
1, stretcher assembly, 2, tappet, 3, the balance spring assembly, 4, piston; 5, openings lead circle, 6, valve body, 7, spring, 8, the lower valve assembly; 9, pull back spring, 10, the spring perch assembly, 11, admission port, 12, air extractor duct; 13, air inlet spool, 14, exhausr port, 15, circular groove, 16, respirator.
The specific embodiment
Contrast accompanying drawing below, through the description to embodiment, specific embodiments of the invention is done further detailed explanation, to help those skilled in the art inventive concept of the present invention, technical scheme is had more complete, accurate and deep understanding.
The of the present invention structure expressed like Fig. 1, Fig. 2 and Fig. 3; Air brake valve for a kind of construction machinery and equipment; Be connected with stretcher assembly 1 through tappet 2, described air brake valve comprises valve body 6, piston 4, lower valve assembly 8, on valve body, is provided with admission port 11, air extractor duct 12 and exhausr port 14.
The air brake valve bolt together is realized braking on vehicle chassis.
One, inventive concept of the present invention 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 the goal of the invention of the steering capability of raising piston, the technical scheme that the present invention takes is:
To shown in Figure 3, the air brake valve of construction machinery and equipment provided by the present invention on described piston 4 and surface that described valve body 6 cooperates, is provided with two circular grooves 15, is provided with an openings lead circle 5 in each circular groove 15 like Fig. 1.
Move downward in the process at piston, two openings lead rings at guiding ruler cun φ 50 places lead, and are more stable.
The material of described openings lead circle 5 is a polyformaldehyde.The material of piston guide makes polyformaldehyde into by original aluminium, and is more wear-resisting.
Respirator 16 is installed on the described exhausr port 14.Exhausr port assembling respirator 16 can prevent dust better, improves the life-span of product; Can also eliminate exhaust noise, increase environment-friendly function.
Two circular grooves 15 are located at the position of described piston 4 near two ends.Axially increasing the guiding distance, further improve guide effect.
Two, the static position of each parts relation among the present invention:
Valve body 6, lower valve assembly 8, pull back spring 9, spring perch assembly 10 are formed non-brake chamber.
Three, dynamic position relation of the present invention and principle of work:
1, dynamic position relation:
Step on stretcher assembly 1, apply certain pressure through 2 pairs of balance spring assemblies 3 of tappet, move down thereby promote piston 4, push air inlet spool 13 (lower valve assembly 8) open, the pressurized air that gets into from admission port 11 flows to air extractor duct 12;
2, principle of work
Step on stretcher assembly 1, apply certain pressure through 2 pairs of balance spring assemblies 3 of tappet, move down thereby promote piston 4, push lower valve assembly 8 open, open air inlet spool 13, the pressurized air that gets into from admission port 11 flows to air extractor duct 12;
Loosen pedal, pull back spring 7 backs down piston 4 and upwards promotes, and lower valve assembly 8 returns are closed the passage between admission port 11 and the air extractor duct 12, and the pressurized air of air extractor duct 12 is discharged from exhausr port 14.
Four, the beneficial effect of the invention
The guiding position of piston 4 is two slotted ringes (guide collar 5) guiding at size φ 50 places, and is more stable; The material of piston guide makes polyformaldehyde into by original aluminium, and is more wear-resisting; Respirator 16 is installed on the exhausr port 14.Exhausr port assembling respirator 16 can prevent dust better, improves the life-span of product; Can also eliminate exhaust noise, increase environment-friendly function.
Combine accompanying drawing that the present invention has been carried out exemplary description above; Obviously the concrete realization of the present invention does not receive the restriction of aforesaid way; As long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; Or design of the present invention and technical scheme are directly applied to other occasion without improving, all within protection scope of the present invention.
Claims (3)
1. the air brake valve of a construction machinery and equipment; Be connected with stretcher assembly (1) through tappet (2); Described air brake valve comprises valve body (6), piston (4), lower valve assembly (8), on valve body, be provided with admission port (11), air extractor duct (12 and exhausr port (14), it is characterized in that: on described piston (4) and surface that described valve body (6) cooperates; Be provided with two circular grooves (15), be provided with an openings lead circle (5) in each circular groove (15).
2. according to the air brake valve of the described construction machinery and equipment of claim 1, it is characterized in that: the material of described openings lead circle (5) is a polyformaldehyde.
3. according to the air brake valve of claim 1 or 2 described construction machinery and equipments, it is characterized in that: described exhausr port (14) is gone up respirator (16) is installed.
3, according to the air brake valve of claim 1 or 2 described construction machinery and equipments, it is characterized in that: two circular grooves (15) are located at the position of described piston (4) near two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104257618A CN102501846A (en) | 2011-12-19 | 2011-12-19 | Pneumatic brake valve for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104257618A CN102501846A (en) | 2011-12-19 | 2011-12-19 | Pneumatic brake valve for engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102501846A true CN102501846A (en) | 2012-06-20 |
Family
ID=46214002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104257618A Pending CN102501846A (en) | 2011-12-19 | 2011-12-19 | Pneumatic brake valve for engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102501846A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103754198A (en) * | 2013-12-27 | 2014-04-30 | 芜湖盛力科技股份有限公司 | Single-cavity piston type air brake valve for commercial vehicle diesel engine brake system |
| CN105216776A (en) * | 2015-05-12 | 2016-01-06 | 西安航空制动科技有限公司 | The pneumatic brake valve of a kind of 21MPa |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201240377Y (en) * | 2008-06-14 | 2009-05-20 | 芜湖盛力制动有限责任公司 | Air brake master valve |
| CN201457358U (en) * | 2009-07-21 | 2010-05-12 | 重庆汇浦液压动力制造有限公司 | Exhaust device and automobile braking valve |
| CN201769815U (en) * | 2010-09-08 | 2011-03-23 | 芜湖盛力制动有限责任公司 | Hydraulic brake valve of full hydraulic brake system of engineering machinery |
| CN202541517U (en) * | 2011-12-19 | 2012-11-21 | 芜湖盛力制动有限责任公司 | Air brake valve of engineering machinery |
-
2011
- 2011-12-19 CN CN2011104257618A patent/CN102501846A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201240377Y (en) * | 2008-06-14 | 2009-05-20 | 芜湖盛力制动有限责任公司 | Air brake master valve |
| CN201457358U (en) * | 2009-07-21 | 2010-05-12 | 重庆汇浦液压动力制造有限公司 | Exhaust device and automobile braking valve |
| CN201769815U (en) * | 2010-09-08 | 2011-03-23 | 芜湖盛力制动有限责任公司 | Hydraulic brake valve of full hydraulic brake system of engineering machinery |
| CN202541517U (en) * | 2011-12-19 | 2012-11-21 | 芜湖盛力制动有限责任公司 | Air brake valve of engineering machinery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103754198A (en) * | 2013-12-27 | 2014-04-30 | 芜湖盛力科技股份有限公司 | Single-cavity piston type air brake valve for commercial vehicle diesel engine brake system |
| CN103754198B (en) * | 2013-12-27 | 2016-08-17 | 芜湖盛力科技股份有限公司 | Braking system of diesel engine of commercial vehicle single-chamber Piston Pneumatic Brake Valve |
| CN105216776A (en) * | 2015-05-12 | 2016-01-06 | 西安航空制动科技有限公司 | The pneumatic brake valve of a kind of 21MPa |
| CN105216776B (en) * | 2015-05-12 | 2018-07-03 | 西安航空制动科技有限公司 | A kind of pneumatic brake valve of 21MPa |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120620 |