CN2486607Y - Steering device for full hydraulic bulldozer - Google Patents
Steering device for full hydraulic bulldozer Download PDFInfo
- Publication number
- CN2486607Y CN2486607Y CN 01234900 CN01234900U CN2486607Y CN 2486607 Y CN2486607 Y CN 2486607Y CN 01234900 CN01234900 CN 01234900 CN 01234900 U CN01234900 U CN 01234900U CN 2486607 Y CN2486607 Y CN 2486607Y
- Authority
- CN
- China
- Prior art keywords
- valve
- cavity
- boss
- oil
- full hydraulic
- 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 - Lifetime
Links
Abstract
The utility model discloses a full hydraulic steering gear of a bulldozer, comprising a flow divider valve which is internally provided with a valve stem, while the middle part of the valve is provided with a piston. A left boss and a right boss arranged in the valve divide the cavity of the valve into a left cavity, a middle cavity and a right cavity, inner diameters of the three cavities are bigger than the external diameter of the piston, the inner diameters of the left boss and the right boss and the external diameter of the piston are assembled by a push-fit joint. An oil inlet faces the middle cavity while a left oil outlet and a right oil outlet respectively faces the left cavity and the right cavity. The utility model adopts the flow divider valve as the full hydraulic steering gear of the bulldozer, which has the advantages of simple structure, low cost, long service life and flexible steering.
Description
The utility model relates to a kind of full hydraulic bulldozer steering gear.
Existing bulldozer steering operation needs two stroking mechanisms, control two oil pumps, drives the two hydraulic motors ridden in left or right direction wheel that turns round respectively, turns to about realizing with the different travel speeds of two wheels.This transfer needs two oil pumps, two cover stroking mechanisms, and equipment cost is higher.
The purpose of this utility model is to provide a kind of needs an oil pump, causes left and right road wheel speed difference by flow divider valve, realizes the full hydraulic bulldozer steering gear that bulldozer turns to.
Utility model has been achieved in that an assignment of traffic valve body, and two annular boss about having in the valve body will be split into three chambeies, left, center, right between body cavity, and the chamber is built-in with valve rod, and there is plunger at the valve rod middle part, and plunger cooperates with slyness in the boss.Facing to the lumen position oil-in is arranged,, left and right oil-out is arranged facing to position, left and right chamber.
The utility model adopts flow divider valve as the full hydraulic bulldozer steering gear, and simple in structure, cost is low, and long service life turns to light and flexible.
Introduce the utility model below in conjunction with accompanying drawing.
Fig. 1 is the utility model schematic diagram.
With reference to accompanying drawing, in columniform assignment of traffic valve body 1, be equipped with a valve rod 2, there is plunger 7 at the valve rod middle part.Left boss 6, right boss 9 are arranged in the valve body, will be split into left chamber 4, lumen 8, right chamber 11 between body cavity, left, center, right three chamber internal diameters are greater than plunger outer diameter, and left and right boss internal diameter and plunger outer diameter are assembled with sliding fit.Facing to lumen 8 positions oil-in 3 is arranged,, left oil-out 5, right oil-out 10 are arranged respectively facing to position, left and right chamber.
The oil-in of flow divider valve connects oil pump by oil pipe, and left and right oil-out connects left and right road wheel hydraulic motor by oil pipe respectively.The valve rod of flow divider valve, link variable operating mechanism, the side-to-side movement of operating valve lever plunger.During moderate position, left and right oil-out hydraulic fluid flow rate size is the same in plunger is in lumen, and left and right road wheel speed equates, the bulldozer straight-line travelling.When plunger move to left and right certain on one side the time, because of left and right oil-out hydraulic pressure varies in size, cause left and right road wheel speed difference, realize that bulldozer is left and right to turn to.
Claims (1)
1, a kind of full hydraulic bulldozer steering gear, it is characterized in that: an assignment of traffic valve body (1) is arranged, be built-in with a valve rod (3) at valve body, there is plunger (7) at the valve rod middle part, left boss (6), right boss (9) are arranged in the valve body, will be split into left chamber (4), lumen (8), right chamber (11) between body cavity, left, center, right three chamber internal diameters are greater than plunger outer diameter, left and right boss (6,9) internal diameter and plunger (7) external diameter assemble with sliding fit; Facing to lumen (8) position oil-in (2) is arranged,, left oil-out (5), right oil-out (10) are arranged respectively facing to position, left and right chamber (4,11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01234900 CN2486607Y (en) | 2001-04-18 | 2001-04-18 | Steering device for full hydraulic bulldozer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01234900 CN2486607Y (en) | 2001-04-18 | 2001-04-18 | Steering device for full hydraulic bulldozer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2486607Y true CN2486607Y (en) | 2002-04-17 |
Family
ID=33648176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01234900 Expired - Lifetime CN2486607Y (en) | 2001-04-18 | 2001-04-18 | Steering device for full hydraulic bulldozer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2486607Y (en) |
-
2001
- 2001-04-18 CN CN 01234900 patent/CN2486607Y/en not_active Expired - Lifetime
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110418 Granted publication date: 20020417 |
|
| DD01 | Delivery of document by public notice |
Addressee: Sanyi Heavy Industry Co., Ltd. Document name: Notification of Expiration of Patent Right Duration |