A shift solenoid valve for forklift
A technology of solenoid valves and forklifts, which is applied in the direction of sliding valves, valve details, valve devices, etc., can solve the problems of complex structure, poor reliability, and large volume, and achieve the goals of improving work reliability, reducing opening speed, and reducing hydraulic power requirements Effect
Active Publication Date: 2017-05-17
HEFEI SHINNY INSTR CONTROL TECH
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Problems solved by technology
Under the premise of reducing the volume, higher requirements are put forward for the safety, reliability and firmness of the solenoid valve. However, the traditional shift solenoid valve is usually large in size, complex in structure, and poor in reliability, so it cannot be reliable. To meet the actual needs of 4-10 tons of forklifts, this requires the design of a shift solenoid valve with the characteristics of small impact, high reliability, and high temperature resistance.
Method used
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[0018] The present invention will be further described below in conjunction with the accompanying drawings.
[0019] Such as Figures 1 to 5 As shown, the shift electromagnetic valve for forklift of the present invention and the switch for forklift shift are installed on the cab control mechanism, including valve seat 1, valve core 2, base 3, o-shaped ring 4, moving iron core 5, nut 6. The static iron core 7, the magnetic isolation ring 8, the coil 9, the spring 10 and the damper 11, wherein the base 3, the static iron core 7, and the magnetic isolation ring 8 are welded together by laser welding and argon arc welding to form a casing 12. O-ring 4 is installed on the sleeve 12 to help improve the sealing effect. The coil 9 is integrally injection molded. The coil 9 is set on the welded sleeve 12. The nut 6 can match the thread on the sleeve 12 , the coil 9 is fixed on the base 3 of the shift solenoid valve.
[0020] The moving iron core is designed to be tapered at one end o...
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The invention discloses a shift solenoid valve for a forklift, which comprises a coil, a sleeve, a valve core and a valve seat. The sleeve is composed of a static iron core, a magnetic isolation ring and a base. Externally, the shift solenoid valve also includes a moving iron core, a spring and a damper. One side of the moving iron core matches the shape of the static iron core. When the moving iron core moves, it can be aligned with the The static iron core is pressed into contact; the moving iron core is set in a stepped cylindrical cavity structure, a spring is arranged in the cavity close to the static iron core, and a damper is fixed in the cavity on the other side , the damper is in the shape of a hollow ring; the cavity diameter of the movable iron core on the side where the spring is set is larger than the cavity diameter on the side where the damper is set. The invention has simple and compact structure, convenient and firm assembly and connection, the damper can effectively prolong the shifting time, and the novel valve core structure can further reduce the hydraulic power demand and improve the working reliability of the shifting valve.
Description
technical field [0001] The invention relates to the field of a shift solenoid valve for a vehicle, in particular to a shift solenoid valve for a 4-10 ton forklift. Background technique [0002] With the recovery of the global economy and the rapid development of my country's domestic economy, the demand for automatic transmission applications of engineering vehicles is growing rapidly. The performance will be higher, the fuel economy will be better, the loading rate of automatic transmission will also increase significantly, and the demand for the number of shift solenoid valves will also increase. Due to the space and cost considerations of the operating mechanism, the solenoid valve Miniaturization has become the development trend of solenoid valves. Under the premise of reducing the volume, higher requirements are put forward for the safety, reliability and firmness of the solenoid valve. However, the traditional shift solenoid valve is usually large in size, complex in st...
Claims
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IPC IPC(8): F16K31/06
CPCF16K3/262F16K31/0668F16K31/0675F16K31/0696
Inventor 汪成刚仲勇潘光亮
Owner HEFEI SHINNY INSTR CONTROL TECH