CN201269233Y

CN201269233Y - Four-link control valve

Info

Publication number: CN201269233Y
Application number: CNU2008201661779U
Authority: CN
Inventors: 徐永江
Original assignee: HANGZHOU JINDING HYDRAULIC PARTS MANUFACTURING Co Ltd
Current assignee: HANGZHOU JINDING HYDRAULIC PARTS MANUFACTURING Co Ltd
Priority date: 2008-10-23
Filing date: 2008-10-23
Publication date: 2009-07-08
Anticipated expiration: 2018-10-23

Abstract

The utility model relates to a hydraulic valve, in particular to a four bar control valve, which mainly solves the technical problems that the hydraulic valve in the prior art can not change positions of a reversing valve and a pressure control slide valve simultaneously, the whole volume of the reversing valve and the pressure control valve is larger and the use is more inconvenient and the like. The hydraulic valve comprises a bracket which is connected with a valve body; and a cavity of the valve body is provided with a reversing valve rod. The hydraulic valve is characterized in that the cavity of the valve body is communicated with an oil inlet, an oil return opening and a working oil opening; the inner part of the valve body is provided with a safety valve; the inner part of the safety valve is communicated with an inner cavity of the valve body; the valve body is hinged with a handle; a hinged point position of the handle is connected with a deflector rod; the reversing valve rod is provided with a shifting hole which can be inserted by the deflector rod and can drive the reversing valve rod to move; the handle is hinged with a connecting rod; the other end of the connecting rod is moveably connected with a rocker which is connected with a semi-cylindrical rotating shaft; and the rotating shaft is matched with a sliding sleeve which is arranged at the rear end of the safety valve.

Description

Four connecting rod control valves

Technical field

The utility model relates to a kind of hydrovalve, especially relates to a kind of to using the isostructural improvement of four connecting rod control valves on rice harvester.

Background technique

Generally at novel rice harvester, be to change the position of reversing slide valve and pressure control guiding valve simultaneously with quadratic crank mechanism by a kind of three-position five-way, realize the hydraulic power steering of crawler type traveling machine.Chinese patent discloses a kind of three-position five-way pilot operated rotary valve, and (notice of authorization number: CN 1828065A), it establishes oil pump oil inlet hole, oil pump oil sump tank hole, oil cylinder oil inlet hole and oil cylinder spill port, oil sump tank hole on valve body; Between oil pump oil inlet hole and oil sump tank hole, establish relief valve; A side is established rotary valve in the through hole of valve body, and opposite side is established one-way valve; Rotary valve is made up of the sliding spool in rotary valve housing in the valve pocket and the rotary valve housing; Establish handle on the rotary valve housing, valve body is stretched out by the limited cap mesopore in the handle outer end, is provided with Returnning spring between sliding spool one end and the rotary valve housing; The other end and one-way valve join; Valve pocket and rotary valve housing corresponding position be provided with through hole respectively with valve body on the corresponding connection in oil sump tank hole, oil pump oil sump tank hole; The oil cylinder spill port is provided with through hole by valve pocket and rotary valve housing corresponding position and is communicated with the rotary valve housing cavity; The oil pump oil inlet hole is communicated with the oil cylinder oil inlet hole; Be provided with annular groove with oil cylinder spill port corresponding position on the valve pocket cylindrical; Be provided with annular groove with the through hole corresponding position on the valve sleeving inner wall; One-way valve is to be closed in the spring in the valve body cavity and to be constituted with the steel ball that matches into and out of oilhole by plug, and oil outlet is positioned at the annular groove on the valve body.But this hydrovalve can't change the position of reversing slide valve and pressure control guiding valve simultaneously, and selector valve and pressure controlled valve overall volume are bigger, uses inconvenient.

The model utility content

The utility model technical issues that need to address provide a kind of four connecting rod control valves, it mainly is to solve the position that the existing in prior technology hydrovalve can't change reversing slide valve and pressure control guiding valve simultaneously, selector valve and pressure controlled valve overall volume are bigger, use the technical problem than inconvenience etc.

Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:

Four connecting rod control valves of the present utility model, comprise support, be connected with valve body on the support, be provided with the commutation valve rod in the cavity of valve body, the cavity that it is characterized in that described valve body is communicated with filler opening, return opening, actuator port, valve inner is provided with safety valve, and safety valve is inner to be communicated with the body cavity body; Be hinged with handle on the valve body, the articulating point place of handle is connected with driving lever, has on the commutation valve rod can allow the driving lever insertion and can drive the dial hole that the commutation valve rod moves; Be hinged with connecting rod on the handle, the connecting rod the other end is connected with rocking bar, and rocking bar is connected with semi-cylindrical rotating shaft, and rotating shaft matches with the sliding sleeve that the safety valve rear end is provided with.Safety valve and valve body are made integrated, make that the volume of The whole control valve is less.Handle can be " L " shape, the articulating point place of itself and valve body is connected with rotating driving lever, driving lever is plugged in the dial hole of commutation on the valve rod, when handle rotates, driving lever also can rotate thereupon, by the dial hole valve rod direction axial motion to the left and right that will commutate, the valve rod that commutates like this can be opened or closed actuator port then.When handle was rotating, connecting rod also can drive rocking bar simultaneously and rotate, thereby made semi-cylindrical rotating shaft promote the rear end of safety valve, and the good nominal pressure of levelling has guaranteed to dispatch from the factory.The actuator port place is connected with outside with inipple.

As preferably, described valve body is a three position five-way valve, and actuator port is D _LMouth and Dr mouth, D _LMouth is communicated with the cavity inside of valve body by work oil duct L, work oil duct R respectively with the Dr mouth, and the commutation valve rod is connected with Returnning spring.Filler opening is located at the body cavity place between work oil duct L and the work oil duct R, and work oil duct L and work oil duct R can realize alternately open-minded when the commutation valve rod moves to different station.

As preferably, described handle is connected with the torsion spring that it is resetted.Torsion spring after entire equipment is finished the work resets handle.Torsion spring is located at the articulating point place of handle and valve body.

As preferably, an end of described safety valve is provided with the adjusting screw of can regulate safety valve internal pressure, and adjusting screw can be set up with safety valve is orthogonal.

Therefore, the utlity model has and use quadratic crank mechanism to change the position of reversing slide valve and pressure control guiding valve simultaneously, selector valve and pressure controlled valve are organically consisted of the characteristics such as integral body that volume is little, in light weight, easy to use.

Description of drawings

Accompanying drawing 1 is a kind of structural representation of the present utility model;

Accompanying drawing 2 is internal structure schematic representation of the present utility model;

Accompanying drawing 3 is plan structure schematic representation of Fig. 1;

Accompanying drawing 4 is that the A of Fig. 3 is to structural representation;

Accompanying drawing 5 is that the B of Fig. 3 is to structural representation.

Embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: the four connecting rod control valves of this example, as Fig. 1, Fig. 2, Fig. 3, a support 1 is arranged, be connected with valve body 2 on the support, cross-under has commutation valve rod 3 in the cavity of valve body.As Fig. 4, the cavity of valve body 2 is communicated with filler opening 4, return opening 5, D _LMouth, Dr mouth, D _LMouthful, the Dr mouth is communicated with the cavity inside of valve body 2 by work oil duct L14, work oil duct R15 respectively, filler opening 4 is located at work oil duct L14, in valve body 2 cavitys between the oil duct R15 of working.Commutation valve rod 3 is connected with Returnning spring 16.Be hinged with the handle 8 of " L " shape on the valve body 2, the articulating point place of handle 8 is connected with driving lever, has on the commutation valve rod 3 can allow the driving lever insertion and can drive the dial hole 9 that the commutation valve rod moves.As Fig. 5, the hinged place of handle 8 and valve body 2 is connected with and can makes its torsion spring that resets 17.Be hinged with connecting rod 10 on the handle 8, connecting rod 10 the other ends are connected with rocking bar 11, and rocking bar 11 is connected with semi-cylindrical rotating shaft 12.The inside of valve body 2 is provided with safety valve 6, and safety valve inside is communicated with valve body 2 inner chamber body by oil duct, and rotating shaft 12 matches with the sliding sleeve 13 that safety valve 6 rear ends are provided with.The inner of safety valve is provided with the adjusting screw 7 of can regulate safety valve 6 internal pressures.

During use, when handle 8 rotated counterclockwise, pulling commutation valve rod 3 was moved to the left, and has blocked work oil duct R15, and promptly hydraulic fluid port Dr mouth is shut, only D _LMouth is connected.On the other hand, under the effect of four connecting rods, rocking bar 11 also and then rotates counterclockwise, and makes safety valve 6 will respond valve port and shuts, the good nominal pressure of levelling of guaranteeing to dispatch from the factory.

When handle 8 clockwise rotated, pulling commutation valve rod 3 moved right, and has blocked work oil duct L14, i.e. hydraulic fluid port D _LMouth is shut, and only the Dr mouth is connected, and has realized the quadratic crank mechanism control valve.On the other hand, under the effect of four connecting rods, rocking bar 11 also and then clockwise rotates, and makes safety valve 6 will respond valve port and shuts, and levelling good nominal pressure has equally guaranteed to dispatch from the factory.

After loosing one's grip, under the effect by the elastic force of torsion spring 17, make commutation valve rod 3 be returned to meta.

Claims

1. connecting rod control valve, comprise support (1), be connected with valve body (2) on the support (1), be provided with commutation valve rod (3) in the cavity of valve body (2), the cavity that it is characterized in that described valve body (2) is communicated with filler opening (4), return opening (5), actuator port, valve body (2) inside is provided with safety valve (6), and safety valve is inner to be communicated with valve body (2) inner chamber body; Be hinged with handle (8) on the valve body (2), the articulating point place of handle (8) is connected with driving lever, has on the commutation valve rod (3) can allow the driving lever insertion and can drive the dial hole (9) that the commutation valve rod moves; Be hinged with connecting rod (10) on the handle (8), connecting rod (10) the other end is connected with rocking bar (11), and rocking bar (11) is connected with semi-cylindrical rotating shaft (12), and rotating shaft (12) matches with the sliding sleeve (13) that safety valve (6) rear end is provided with.

2. four connecting rod control valves according to claim 1, it is characterized in that described valve body (2) is a three position five-way valve, actuator port is DL mouth (18) and Dr mouth (19), the DL mouth is communicated with the cavity inside of valve body (2) by work oil duct L (14), work oil duct R (15) respectively with the Dr mouth, and commutation valve rod (3) is connected with Returnning spring (16).

3. four connecting rod control valves according to claim 1 and 2 is characterized in that described handle (8) is connected with can make its torsion spring that resets (17).

4. four connecting rod control valves according to claim 1 and 2 is characterized in that an end of described safety valve is provided with the adjusting screw (7) of can regulate safety valve (6) internal pressure.

5. four connecting rod control valves according to claim 3 is characterized in that an end of described safety valve is provided with the adjusting screw (7) of can regulate safety valve (6) internal pressure.