CN201220662Y - Ball valve type assistor - Google Patents
Ball valve type assistor Download PDFInfo
- Publication number
- CN201220662Y CN201220662Y CNU2008201049123U CN200820104912U CN201220662Y CN 201220662 Y CN201220662 Y CN 201220662Y CN U2008201049123 U CNU2008201049123 U CN U2008201049123U CN 200820104912 U CN200820104912 U CN 200820104912U CN 201220662 Y CN201220662 Y CN 201220662Y
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- CN
- China
- Prior art keywords
- oil cylinder
- oil
- cylinder
- steel ball
- ball valve
- 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
A ball valve type assistor belongs to a gas-liquid type augmenter used for engineering mechanical and heavy transportation mechanical braking systems. which comprises an air cylinder, an air cylinder piston, a retracing spring, an oil cylinder, an oil cup and an oil cylinder piston. The oil cup and the oil cylinder are communicated in radial direction; the outlet and the inlet oil valves of the oil cylinder are ball valves arranged in the radial passage of the oil cylinder and the oil cup and composed of steel balls and inner conical surfaces; and each ball valve comprises a steel ball casings with one end fixedly connected with the oil cylinder in radial direction, a steel ball and an oil outlet bolt with an inner conical surface and a radial oil outlet port. The ball valve type assistor simplifies the processing of the oil cylinder piston by dispensing with the conical surface processing of the conical valve and the surface precision finishing of the air cylinder piston rod and dispensing with the seal of the piston rod and the end cover of the air cylinder and the exhaust bolt arranged at the oil cylinder connecting head. The ball valve type assistor can enable the oil cylinder to promptly and automatically exhaust gas without the need of manual operation. Furthermore, the ball valve type assistor has the advantages of simple structure, good oil sealing performance and high working reliability.
Description
Technical field
The utility model relates to a kind of gas liquid type augmenter that is used for construction machinery and equipment and heavy transport tool brake system.
Background technology
At present, the gas liquid type assistor that is used for construction machinery and equipment and heavy transport tool brake system, by cylinder, cylinder piston, piston rod, pull back spring, with cylinder axis to series connected oil cylinder, be connected and form with the vital partss such as oil cylinder piston of cylinder piston interlock with the lubricating cup of oil cylinder radial communication and by piston rod.The many places rubber seal of this assistor is fragile, thereby easily causes brake failure.For this reason, China No. 002231212 and No. 2006202003895 patent disclosure two kinds of improved assistors.But the turnover fuel tap of these two kinds of assistor oil cylinders, still be arranged on piston rod and oil cylinder piston bonded assembly one end, oil cylinder must be communicated with through the central through hole of oil cylinder piston with lubricating cup, thereby still exists many shortcomings such as the piston rod surface need are fragile through the rubber seal at detailed manufacture, piston rod place, piston rod packing is tight, oil cylinder exhaust inconvenience.
Summary of the invention
Task of the present utility model is the shortcoming that will overcome above-mentioned existing assistor, provides that a kind of piston rod surface does not need detailed manufacture, good sealing effect, the more failure-free ball valve formula assistor of working.
Task of the present utility model is finished like this: it also has cylinder, cylinder piston, piston rod, pull back spring, oil cylinder, lubricating cup and oil cylinder piston, lubricating cup and oil cylinder radial communication, but the ball valve that the turnover fuel tap of oil cylinder is made up of steel ball and inner conical surface, this ball valve is arranged in the radial passage of oil cylinder and lubricating cup.
Steel ball sleeve pipe, the steel ball that described ball valve radially is fastenedly connected by an end and oil cylinder and have inner conical surface and radially the fuel-displaced bolt of oil outlet form, fuel-displaced bolt is threaded with the steel ball sleeve pipe other end, the steel ball sleeve pipe is arranged in the oil cup seat that is fastenedly connected with oil cylinder, steel ball is arranged in the steel ball sleeve pipe, and at least two oil throughs are arranged on the cylinder wall in the steel ball sleeve pipe.
For improving the sealing effectiveness between oil cylinder and the piston, oil cylinder piston is provided with at least one y-shaped ring that cooperates with oil cylinder or V-arrangement plastic seal ring.
Because the utility model no longer is arranged on piston rod and oil cylinder piston bonded assembly one end with the turnover fuel tap of oil cylinder, but a ball valve is arranged in the passage of oil cylinder and lubricating cup, oil cylinder directly is communicated with by ball valve with lubricating cup, and needn't be communicated with through oil cylinder piston, thereby simplified the processing of oil cylinder piston, the cone face process that has saved cone valve, the detailed manufacture on cylinder piston rod surface and the sealing between piston rod and the cylinder end piece have been saved, even do the gap between piston rod and the cylinder end piece bigger, do not have oil yet and infiltrate in the cylinder.Owing to be arranged at the ball valve on the oil cylinder sidewall, form one not only can from lubricating cup to the smooth repairing of oil cylinder, but also can from oil cylinder to the smooth oil extraction of lubricating cup, also can be from oil cylinder through the outside multifunctional special " check valve " of exhaust at any time of lubricating cup, thereby not only saved the bleeder screw that is arranged on the cylinder connector, and do not need manual operation can make oil cylinder with, timely self-bleeding.The utility model is not only simple in structure, and has improved oil sealing effect and functional reliability greatly.
Description of drawings
Fig. 1 is the structural representation that the utility model is used for loader embodiment.Fig. 2 is the enlarged drawing at ball valve place among Fig. 1.
The specific embodiment
With reference to attached Fig. 1 and 2, to brake in the assistor at the loader of forming by vital partss such as cylinder 1, cylinder piston 2, piston rod 3, pull back spring 4, oil cylinder 5, lubricating cup 6 and oil cylinder pistons 7, lubricating cup 6 is radial communication with it in the front portion of oil cylinder 5.In the passage of oil cylinder 5 and lubricating cup 6 radial communication, be provided with the ball valve of forming by steel ball 8 and inner conical surface 9.Article one, steel ball sleeve pipe 10 welds on cylinder wall with oil cylinder 5 quadratures, thereby the lower end of steel ball sleeve pipe 10 and oil cylinder 5 formation radially are fastenedly connected.The upper end of steel ball sleeve pipe 10 is with the fuel-displaced bolt 11 that has been threaded.Fuel-displaced bolt 11 has the central blind hole 12 of band inner conical surface 9.The radially oil outlet 13 (it can prevent that oil return is toward upper punch) that communicates with central blind hole 12 is arranged on the bolt cap.Between the upper surface of bolt cap and steel ball sleeve pipe, preferably also has the copper packing 14 of a sealing usefulness.Steel ball sleeve pipe 10 is arranged in the oil cup seat 15 with the cylinder wall firm welding.Steel ball 8 in steel ball sleeve pipe 10 between fuel-displaced bolt 11 and cylinder wall.Be drilled with two to four oil throughs 16 on the cylinder wall in the steel ball sleeve pipe.So the oil through 16 formed paths on the radially oil outlet 13 that the brake noise in the lubricating cup 6 can be on bolt cap, central blind hole 12, steel ball collar aperture and the cylinder wall of bolt flow in the oil cylinders 5, the air in the oil cylinder 5 then can oppositely be discharged along this path.For improving the sealing effectiveness between oil cylinder 5 and the oil cylinder piston 7, oil cylinder piston 7 is provided with Y shape rubber seal or the V-arrangement plastic seal ring 17 that twice cooperate with oil cylinder 5; One Y shape rubber seal also can be set with O-ring seals, or twice Y shape rubber seal be set, or one Y shape rubber seal and twice O-ring seals are set with O-ring seals.
During work, air pressure is pushed cylinder piston 2, piston rod 3 and oil cylinder piston 7 to move to right to, pressure in the oil cylinder 5 raises, force steel ball 8 to rise and be pressed on the inner conical surface 9 of fuel-displaced bolt 11, oil circuit between oil cylinder 5 and the lubricating cup 6 is blocked, and the brake noise in the oil cylinder 5 is delivered in the brake system of loader through cylinder connector 18.When cylinder 1 off-load, pull back spring 4 forces cylinder piston 2, piston rod 3 and oil cylinder piston 7 to moving to left, oil cylinder 5 off-loads, steel ball 8 separates with the inner conical surface 9 of fuel-displaced bolt 11, oil circuit between oil cylinder 5 and the lubricating cup 6 is opened, and in-oil cylinder brake noise can flow in the lubricating cup through the oil circuit between oil cylinder and the lubricating cup.The oil cylinder internal pressure descends, thereby the brake system of loader is unclamped.Because the oil circuit between oil cylinder and the lubricating cup is positioned at the front portion of oil cylinder, thereby as long as the sealing strictness between oil cylinder and the oil cylinder piston, the oil that just can guarantee oil cylinder 5 does not effectively infiltrate in the cylinder 1, and obviously, this is to reach by the rubber seal 17 that is arranged on the oil cylinder piston 7 very easily.
Claims (3)
1, a kind of ball-valve type assistor, it has cylinder, cylinder piston, piston rod, pull back spring, oil cylinder, lubricating cup and oil cylinder piston, lubricating cup and oil cylinder radial communication, it is characterized in that: the ball valve that the turnover fuel tap of oil cylinder is made up of steel ball and inner conical surface, this ball valve is arranged in the radial passage of oil cylinder and lubricating cup.
2, by the described ball-valve type assistor of claim 1, it is characterized in that: steel ball sleeve pipe, the steel ball that described ball valve radially is fastenedly connected by an end and oil cylinder and have inner conical surface and radially the fuel-displaced bolt of oil outlet form, fuel-displaced bolt is threaded with the steel ball sleeve pipe other end, the steel ball sleeve pipe is arranged in the oil cup seat that is fastenedly connected with oil cylinder, steel ball is arranged in the steel ball sleeve pipe, and at least two oil throughs are arranged on the cylinder wall in the steel ball sleeve pipe.
3, by claim 1 or 2 described ball-valve type assistors, it is characterized in that: at least one Y shape rubber seal that cooperates with oil cylinder or V-arrangement plastic seal ring arranged on oil cylinder piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201049123U CN201220662Y (en) | 2008-04-28 | 2008-04-28 | Ball valve type assistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201049123U CN201220662Y (en) | 2008-04-28 | 2008-04-28 | Ball valve type assistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201220662Y true CN201220662Y (en) | 2009-04-15 |
Family
ID=40574176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201049123U Expired - Fee Related CN201220662Y (en) | 2008-04-28 | 2008-04-28 | Ball valve type assistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201220662Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105383465A (en) * | 2015-11-09 | 2016-03-09 | 苏细调 | Loader brake pump |
| CN107554506A (en) * | 2017-08-14 | 2018-01-09 | 厦门金利业科技有限公司 | Anti-jamming high temperature-proof failure booster pump |
-
2008
- 2008-04-28 CN CNU2008201049123U patent/CN201220662Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105383465A (en) * | 2015-11-09 | 2016-03-09 | 苏细调 | Loader brake pump |
| CN107554506A (en) * | 2017-08-14 | 2018-01-09 | 厦门金利业科技有限公司 | Anti-jamming high temperature-proof failure booster pump |
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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: 20090415 Termination date: 20100428 |