CN2588104Y - Speed adjusting type pneumatically controlled distribution valve - Google Patents
Speed adjusting type pneumatically controlled distribution valve Download PDFInfo
- Publication number
- CN2588104Y CN2588104Y CN 02288896 CN02288896U CN2588104Y CN 2588104 Y CN2588104 Y CN 2588104Y CN 02288896 CN02288896 CN 02288896 CN 02288896 U CN02288896 U CN 02288896U CN 2588104 Y CN2588104 Y CN 2588104Y
- Authority
- CN
- China
- Prior art keywords
- valve
- damping device
- base
- speed adjusting
- adjusting type
- 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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- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a speed adjusting type pneumatically controlled distribution valve. The utility model comprises a valve body 1, a valve cap 7 and an air cylinder 2, wherein, pistons of the air cylinder 4, springs 5 and valve rods 6 are arranged in the valve body 1 and the air cylinder 2, and a damping device is arranged in a hollow cavity of the valve cap 7; the damping device comprises a base 10, an elastic member 11 and a bracket 8, and a clearance exists between the base 10 and the bracket 8; the base 10 of the damping device is fixedly connected with the valve cap 7 or the valve rods 6. Because the damping device is arranged in the hollow cavity of the valve cap of the distribution valve, the valve rods can be stopped in required positions for realizing that the size of an opening of an oil passage can be adjusted at will and realizing that the lowering speed of a carriage is adjusted and controlled at will.
Description
Technical field
The utility model relates to a kind of gas control distributing valve, particularly a kind of gas control distributing valve that is used to regulate and control the body of tipper carriage rate of descent.
Background technique
Dumping car after lifting unloading, the compartment return that need descend, if rate of descent is not regulated and control, the compartment may descend fast, vehicle frame is impacted excessive, can cause mechanical deterioration, will cause vehicle damage when serious, even jeopardize operator's safety.
Known speed adjusting type gas control distributing valve, the pressurized air that adopts the ratio air valve to import certain pressure in the distributing valve cylinder promotes cylinder piston, drives valve stem slides, opens the oil circuit opening, realizes the decline in compartment.By changing the angle of stirring of ratio Air Valve Control handle, change the size of input distributing valve cylinder pressurized air air pressure, realize control thereby reach control oil channel opening amount size to the compartment rate of descent.
There is following defective in this known technology, because valve rod and cylinder piston adopt the O-ring seals sealing, the starting resistance that valve rod is subjected to is far longer than slip resistance, therefore, under certain gas pressure, piston promotion valve rod overcomes starting resistance to begin to slide, after oil circuit is opened, need to change the air pressure of input distributing valve cylinder, change the size of oil circuit opening, because this process moment finishes, operation is by manually carrying out, be difficult to accurate control, it is poor to cause the regulation and control sensitivity of compartment rate of descent, easily causes compartment moment to descend fast.
The model utility content
The purpose of this utility model is to overcome the above-mentioned defective that known technology exists, and provides a kind of regulation and control accurate, highly sensitive, and the compartment rate of descent is adjustable speed adjusting type gas control distributing valve arbitrarily.
The speed adjusting type gas control distributing valve that the utility model provides comprises valve body, valve gap, cylinder, is provided with cylinder piston, spring, valve rod in described valve body and the cylinder; Be provided with damping device in the valve gap cavity, this damping device comprises base, resilient member, support, leaves the gap between this base and the support; The base of described damping device and valve gap or valve rod are fixedly connected.
Dumping car is after the lifting unloading, when the compartment need descend return, in cylinder, import pressurized air by cylinder air inlet, when cylinder piston overcomes starting resistance from system, when promotion or pulling valve stem slides, because the slip resistance from system is far smaller than starting resistance, the moment that begins to slide, the stressed disequilibrium of valve rod, at this moment, damping device applies a damping function power to valve rod, then valve rod stressed reaches new state of equilibrium, and the size by control input cylinder air pressure can make the position that valve rod is parked in to be needed, the size that realizes the oil circuit opening is arbitrarily adjustable, thereby realizes the random regulation and control to the compartment rate of descent.
The beneficial effects of the utility model are, owing in the valve gap cavity of distributing valve, be provided with damping device, after the valve rod starting, damping device applies a damping function power to valve rod, can make the position that valve rod is parked in to be needed, the size that realizes the oil circuit opening is arbitrarily adjustable, thereby realizes the random regulation and control to the compartment rate of descent.Special have certain load-carrying in the compartment and when needing to descend, speed governing effect of the present utility model is especially obvious.
Description of drawings
Fig. 1 is the utility model embodiment one a structural representation,
Fig. 2 is the utility model embodiment two a structural representation.Mark among the figure: 1. valve body; 2. cylinder; 3. cylinder air inlet; 4. cylinder piston; 5. spring; 6. valve rod; 7. valve gap; 8. support; 9. packing ring; 10. base; 11. damping spring; 12. sleeve pipe; 13. nut; 14. bolt; 15. packing ring; 16. confined planes; 17.O shape seal ring; A. oil circuit opening.
Embodiment
Below in conjunction with accompanying drawing speed adjusting type gas control distributing valve of the present utility model is described in detail.
Embodiment one
With reference to Fig. 1, this speed adjusting type gas control distributing valve is made of valve body 1, valve gap 7, cylinder 2, be provided with cylinder piston 4, spring 5, valve rod 6 in described valve body 1 and the cylinder 2, between the inwall of cylinder piston 4 and cylinder 2, between the inwall of valve rod 6 and valve body 1, be provided with O-ring seals 17; Be provided with damping device in the cavity of valve gap 7, this damping device is made of base 10, damping spring 11, support 8, leaves the gap between this base 10 and the support 8; Be provided with packing ring 9 between this base 10 and the valve gap 7, this base 10 is fixedly connected with valve gap 7; The cavity inner wall of described valve gap 7 is provided with confined planes 16.
In the present embodiment, the resilient member of damping device adopts damping spring 11, and is apparent, also can adopt other similar resilient member.
In the present embodiment, when cylinder piston 4 promoted valve rod 6 slips, oil circuit opening A opened, and therefore adopted the base 10 of damping device to be fixedly connected with valve gap 7.
Embodiment two
The speed adjusting type gas control distributing valve that present embodiment provides, basic identical with embodiment one, constitute by valve body 1, valve gap 7, cylinder 2, be provided with cylinder piston 4, spring 5, valve rod 6 in described valve body 1 and the cylinder 2, between the inwall of cylinder piston 4 and cylinder 2, between the inwall of valve rod 6 and valve body 1, be provided with O-ring seals 17; Be provided with damping device in the cavity of valve gap 7, this damping device is made of base 10, damping spring 11, support 8, leaves the gap between this base 10 and the support 8; The cavity inner wall of described valve gap 7 is provided with confined planes 16.The resilient member of this damping device adopts damping spring 11, also can adopt other similar resilient member.
Its difference is that described base 10 is fixedly connected with valve rod 6 by sleeve pipe 12, nut 13, bolt 14, packing ring 15, is slidingly matched between support 8 and the sleeve pipe 12.
In the present embodiment, when cylinder piston 4 pulling valve rods 6 slided, oil circuit opening A opened, and therefore adopted the base 10 of damping device to be fixedly connected with valve rod 6.
Claims (3)
1. speed adjusting type gas control distributing valve, comprise valve body, valve gap, cylinder, be provided with cylinder piston, spring, valve rod in described valve body and the cylinder, it is characterized in that: in the cavity of valve gap, be provided with damping device, described damping device comprises base, resilient member, support, leaves the gap between this base and the support; The base of this damping device and valve gap or valve rod are fixedly connected.
2. speed adjusting type gas control distributing valve according to claim 1 is characterized in that: described valve gap cavity inner wall is provided with confined planes.
3. speed adjusting type gas control distributing valve according to claim 1 is characterized in that: the resilient member of described damping device is a damping spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02288896 CN2588104Y (en) | 2002-11-28 | 2002-11-28 | Speed adjusting type pneumatically controlled distribution valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02288896 CN2588104Y (en) | 2002-11-28 | 2002-11-28 | Speed adjusting type pneumatically controlled distribution valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2588104Y true CN2588104Y (en) | 2003-11-26 |
Family
ID=33748616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02288896 Expired - Fee Related CN2588104Y (en) | 2002-11-28 | 2002-11-28 | Speed adjusting type pneumatically controlled distribution valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2588104Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529783A (en) * | 2011-12-17 | 2012-07-04 | 中国重汽集团青岛重工有限公司 | Safety control system of power takeoff of dump truck |
-
2002
- 2002-11-28 CN CN 02288896 patent/CN2588104Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529783A (en) * | 2011-12-17 | 2012-07-04 | 中国重汽集团青岛重工有限公司 | Safety control system of power takeoff of dump truck |
| CN102529783B (en) * | 2011-12-17 | 2014-04-02 | 中国重汽集团青岛重工有限公司 | Safety control system of power takeoff of dump truck |
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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: 20031126 Termination date: 20091228 |