CN203032656U - Air booster pump piston valve of novel structure - Google Patents
Air booster pump piston valve of novel structure Download PDFInfo
- Publication number
- CN203032656U CN203032656U CN 201220601397 CN201220601397U CN203032656U CN 203032656 U CN203032656 U CN 203032656U CN 201220601397 CN201220601397 CN 201220601397 CN 201220601397 U CN201220601397 U CN 201220601397U CN 203032656 U CN203032656 U CN 203032656U
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- China
- Prior art keywords
- brake
- piston
- valve rod
- valve
- booster pump
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an air booster pump piston valve of a novel structure. The piston valve comprises a brake main cylinder, wherein a brake valve rod assembled in a brake piston is arranged in the brake main cylinder, the brake valve rod is connected with a brake push rod, a main leather collar is arranged at the front of the brake piston, and an annular abrasion-resistant retainer ring is arranged on a connection portion of the rear portion of the main leather collar on the front portion of the brake piston and the brake piston. The piston valve is characterized in that the front end of the brake valve rod is provided with a steel ball embedded in the brake valve rod, the rear portion of the brake valve rod is provided with a retreating baffle. The piston valve has the advantages that rigid sealing formed by a through hole and the steel ball at the front of a brake valve replaces a movable check block, the retreating baffle drives the brake piston to retreat, a large part is eliminated, machining difficulty and assembly difficulty are reduced in structure and process aspects, and reliability of sealing is improved. Cost in a factory is reduced, meanwhile utilization cost is reduced, and large product market competition force and economic benefits are achieved.
Description
Technical field
The utility model belongs to the booster pump device in the drag assembly that uses in the construction machinery and equipment, especially for the air booster pump piston valve of a kind of new structure of Pneumatic hydraulic conversion.
Background technology
The air booster pump that uses in the construction machinery and equipment is to adopt the gas piston push rod to promote the reinforcement output that the piston in the hydraulic ram moves and realizes air and hydraulic oil substantially at present.When the sprue of the push rod front end aperture near the oil cylinder inner carrier, sharply increase at the transient pressure of closure, often sprue front end rubber gasket is torn and made seal failure, thereby cause the afterburning failure of supercharging.Disclosed a kind of air booster pump piston valve has solved this problem in the Chinese patent 201120075445.8.But owing to increased a moving-member, increased cost in the feasible processing.And, find that in use the flank wear of the main apron on the in-oil cylinder piston is serious, standard-required surpasses 500,000 times crank motion, often has only 20-30 ten thousand times, even 6-7 had just lost efficacy because of the problem of sealing for ten thousand times.In order to address this problem, designer of the present utility model has done research in earnest, has proposed goal of the invention of the present utility model.
Summary of the invention
Goal of the invention of the present utility model is in order to overcome above-mentioned defective and not enough putting forward.A kind of air booster pump piston valve of new structure namely is provided.
Technical solution of the present utility model is to realize like this, the air booster pump piston valve of this new structure, has master brake cylinder (1), in master brake cylinder (1), has the braking valve rod (2) that is assemblied in the brake piston (3), braking valve rod (2) connects brake push rod (4), a front portion assembling main apron (5) of brake piston (3), the wear-resisting back-up ring (6) that has an annular at the connecting portion of the rear portion of the main apron (5) of the front portion of brake piston (3) and brake piston, it is characterized in that having and being embedded in its inner steel ball (7) at the front end of braking valve rod (2), have a rollback baffle plate (8) at the rear portion of braking valve rod (2).
Beneficial technical effects of the present utility model is: the positiver sealing that the steel ball of brake activation valve front and through hole form has substituted movable block, rollback barrier driving brake piston rollback, reduced by a bigger part, reduce the difficulty of processing and the difficulty of assembling from structure and two aspects of technology, and improved the reliability of sealing.Both reduce factory cost, reduced the cost that uses again, had bigger product market competitiveness and economic benefit.
Description of drawings
Accompanying drawing is structural representation of the present utility model.Sequence number in the accompanying drawings is described as: 1, brake cylinder, 2, brake activation valve, 3, brake piston, 4, brake push rod, 5, main apron, 6, wear-resisting back-up ring, 7, steel ball, 8, the rollback baffle plate.
The specific embodiment
Below in conjunction with the embodiment that provides in the accompanying drawing, structure of the present utility model and use are elaborated.With reference to accompanying drawing, the air booster pump piston valve of this kind new structure, has master brake cylinder (1), in master brake cylinder (1), has the braking valve rod (2) that is assemblied in the brake piston (3), braking valve rod (2) connects brake push rod (4), a front portion assembling main apron (5) of brake piston (3), the wear-resisting back-up ring (6) that has an annular at the connecting portion of the rear portion of the main apron (5) of the front portion of brake piston (3) and brake piston, it is characterized in that having and being embedded in its inner steel ball (7) at the front end of braking valve rod (2), have a rollback baffle plate (8) at the rear portion of braking valve rod (2).When brake push rod advanced, the steel ball of braking valve rod front end formed supercharging with the aperture sealing of brake piston in the master brake cylinder, produce braking force.Steel ball adopts interference fit to be connected with brake activation valve.After end of braking, braking valve rod rollback, the rollback baffle plate at its rear portion drives the brake piston back pressure and eliminates, end of braking.
Claims (1)
1. the air booster pump piston valve of a new structure, has master brake cylinder (1), in master brake cylinder (1), has the braking valve rod (2) that is assemblied in the brake piston (3), braking valve rod (2) connects brake push rod (4), a front portion assembling main apron (5) of brake piston (3), the wear-resisting back-up ring (6) that has an annular at the connecting portion of the rear portion of the main apron (5) of the front portion of brake piston (3) and brake piston, it is characterized in that having and being embedded in its inner steel ball (7) at the front end of braking valve rod (2), have a rollback baffle plate (8) at the rear portion of braking valve rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220601397 CN203032656U (en) | 2012-11-15 | 2012-11-15 | Air booster pump piston valve of novel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220601397 CN203032656U (en) | 2012-11-15 | 2012-11-15 | Air booster pump piston valve of novel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203032656U true CN203032656U (en) | 2013-07-03 |
Family
ID=48684797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220601397 Expired - Fee Related CN203032656U (en) | 2012-11-15 | 2012-11-15 | Air booster pump piston valve of novel structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203032656U (en) |
-
2012
- 2012-11-15 CN CN 201220601397 patent/CN203032656U/en not_active Expired - Fee Related
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Legal Events
| 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: 20130703 Termination date: 20131115 |