CN2358296Y

CN2358296Y - Change valve

Info

Publication number: CN2358296Y
Application number: CN 98250790
Authority: CN
Inventors: 梁来; 杨毅; 秦立方
Original assignee: Ouweimu Building Machinery Co
Current assignee: Ouweimu Architectural Machinery Co., Ltd., Liuzhou
Priority date: 1998-12-18
Filing date: 1998-12-18
Publication date: 2000-01-12
Anticipated expiration: 2008-12-18

Abstract

The utility model relates to a reversing valve which comprises a handle 1, a skew disc cap 2, a valve body 9, a left controlling oil channel component and a right controlling oil channel component, wherein the left controlling oil channel component is composed of a left thimble 4<-2>, a left upper iron ball 5<-2>, a left push rod 6<-2>, a left lower iron ball 5<-6> and a left lower spring 8<-4> which are orderly connected, and the right controlling oil channel component is composed of a right thimble 4<-1>, a right upper iron ball 5<-1>, a right push rod 6<-1>, a right lower iron ball 5<-5> and a right lower spring 8<-3> which are orderly connected. The centre of the upper part of the valve body is provided with a rotary shaft 3, and the skew disc cap 2 is sheathed and pressed on a rotary shaft 3 and can rotate around the rotary shaft 3. The handle 1 is fixed on the skew disc cap 2 through screw threads. The operation of the reversing valve can be controlled only by rotating one handle. The reversing valve has the advantages of simple structure and convenient processing and production.

Description

Selector valve

The utility model relates to a kind of rotation selector valve.

The left and right control oil channel parts of existing rotation selector valve (referring to Fig. 2, Fig. 3) connect by gear meshing, operating grip is fixed on its control oil channel parts on one side, the rotating operation handle, rely on meshed gears to control the unlatching of left and right control oil channel parts, sealing realization commutation, in order to realize that oil circuit is unobstructed, the stop valve of a band joystick knob must respectively be set at hydraulic fluid port A, B place separately; When the commutation of control oil channel, operate 3 handles, the programmed sequence of operations complexity easily causes misoperation.

The purpose of this utility model is the existing selector valve that rotates is transformed, and provides that a kind of structure is simpler, manufacturing, easy to operate rotation selector valve.

For reaching above-mentioned purpose, the technical solution of the utility model is: with the stop valve cancellation of original two band joystick knobs, and will be realized that the position that the structural type of commutation changes the inclined disc type valve gap that can be rotated around the axis by a handle control into controls the commutation action of left and right control oil channel parts and realize pressure holding function by unlatching, the sealing that 1 handle left-right rotation is controlled left and right control oil channel parts by gear meshing.Concrete structure is: fix a rotatingshaft in the valve body central upper portion, valve gap is made the swash plate lid that internal surface has constant slope, this swash plate quilt cover is pressed on the rotatingshaft and the moving axis rotation that can rotate, and handle is fixed on swash plate by being threaded and covers.

Because adopt said structure, the selector valve of the utility model only need rotate a handle, the left and right sides control oil channel parts action that can reach the control selector valve is to realize the operation of oil circuit commutation and pressurize, and it is simple in structure, processing and fabricating is convenient, and operation is simplified greatly, avoids misoperation.

Below, the structure characteristic to the selector valve of the utility model is described further in conjunction with the accompanying drawings and embodiments.

Fig. 1: the utility model selector valve structural representation.

Fig. 2: existing Rotation With Changing is to valve arrangement schematic representation (the main sectional view of looking).

The M of Fig. 3: Fig. 2 is to view.

Embodiment

As shown in the figure: the selector valve of the utility model comprises handle 1, and internal surface is the swash plate lid 2 on inclined-plane, and valve body 9 is by the left thimble 4 that links to each other successively _-2, upper left steel ball 5 _-2, left push rod 6 _-2, lower-left steel ball 5 _-6, lower-left spring 8 _-4The left control oil channel parts that constitute; By the right thimble 4 that links to each other successively _-1, upper right steel ball 5 _-1, right push rod 6 _-1, bottom right steel ball 5 _-5, bottom right spring 8 _-3The right control oil channel parts that constitute, valve rod 7 solid, the band seal ring passes left and right push rod 6 with holes _-2, 6 _-1Can be in the middle duct of valve body 9 under the oil pressure effect movable or back down steel ball 5 in the left side left _-4Or back down steel ball 5 in the right side to the right _-3, left medi-spring 8 _-2Withstand steel ball in the left side, an oil nozzle A, right medi-spring 8 arranged therebetween _-1Steel ball in the fore-set right side has an oil nozzle B therebetween, and valve body 9 central upper portion have a rotatingshaft 3, and swash plate covers 2 quilt covers and is pressed on the rotatingshaft 3 and 3 rotations around the shaft, and handle 1 is fixed on by being threaded on the swash plate lid 2.

Course of action is as follows: when handle 1 drive swash plate lid 2 forwarded the right side to, the swash plate lid was depressed left thimble 4 _-2The upper left steel ball 5 of extruding _-2, make upper left steel ball 5 _-2Be close to the valve port place, simultaneously with left push rod 6 _-2Depress, and back down down steel ball 5 _-6, right push rod 6 when handle 1 drive swash plate forwards the right side to _-1Owing to lose the extruding of swash plate lid 2, spring 8 _-3Compress steel ball 5 _-5Make steel ball 5 _-5Be close to the valve port place, right push rod 6 _-1Back down steel ball 5 _-1, the high pressure oil that enters from the P mouth can only enter the left side oil circuit, Yi Bian push steel ball 5 in the left side open under the effect of oil pressure ₄Yi Bian, promote valve rod 7 move right back down the right in steel ball 5 _-3, high pressure oil flows out valve body from oil nozzle A, enters the steel ball 5 of oil from backing down of valve body simultaneously from oil nozzle B _-3Valve port place and steel ball 5 _-1The valve port place enters spill port O and flows back to fuel tank; When handle 1 drive swash plate lid 2 forwarded the left side to, high pressure oil went out from oil nozzle B, and oil return is flowed back to fuel tank from oilhole O after oil nozzle A enters valve body; When handle 1 drive swash plate lid 2 forwards between the left and right position, spring 8 _-3Compress right steel ball 5 _-5, spring 8 _-4Compress left steel ball 5 _-6, right push rod 6 _-1Back down upper right steel ball 5 _-1, left push rod 6 _-1Back down upper right steel ball 5 _-2, the high pressure oil that the P mouth enters flows directly to spill port O, and the high pressure oil in the active chamber is owing to act on steel ball 5 in the left side simultaneously _-4Or steel ball 5 in the right side _-3Go up valve port is compressed sealing, reach the purpose of pressurize.

Claims

1, a kind of selector valve comprises handle (1), valve gap (2), valve body (9), by the left thimble (4 that links to each other successively _-2), upper left steel ball (5 _-2), left push rod (6 _-2), lower-left steel ball (5 _-6), lower-left spring (8 _-4) the left control oil channel parts that constitute with by the right thimble (4 that links to each other successively _-1), upper right steel ball (5 _-1), right push rod (6 _-1), bottom right steel ball (5 _-5), bottom right spring (8 _-3) the right control oil channel parts that constitute, valve rod (7) solid, the band seal ring passes left and right push rod (6 with holes _-2), (6 _-1), can be in the middle duct of valve body (9) under the oil pressure effect movable or back down steel ball (5 in the left side left _-4) or back down steel ball (5 in the right side to the right _-3), left medi-spring (8 _-2) withstand steel ball in the left side, an oil nozzle (A), right medi-spring (8 arranged therebetween _-1) withstand steel ball in the right side, one oil nozzle (B) is arranged therebetween, it is characterized in that: described valve body (9) central upper portion has a rotatingshaft (3), valve gap (2) is that internal surface is the swash plate lid (2) on inclined-plane, this swash plate lid (2) quilt cover is pressed in rotatingshaft (3) and goes up also (3) rotation around the shaft, and handle (1) is fixed on the swash plate lid (2) by screw thread.