The manual valve comprises a main valve body, a valve rod and a compensation valve, the main valve body is provided with a valve cavity, a working channel and a first oil return channel, and the valve rod is movably arranged in the valve cavity; the compensation valve comprises a first valve body, a first elastic piece and a first valve element, and the first elastic piece exerts a preset pulling force effect on the first valve element in the direction close to the first valve body. When the manual valve is in a descending working condition, oil liquid entering the first oil return channel through the valve rod in the working channel can exert a first pressure effect on the end, away from the first valve body, of the first valve element; oil in the working channel can enter the first inner cavity and exert a second pressure effect on the end, close to the first elastic piece, of the first valve element; the first pressure effect, the second pressure effect and the preset tension effect can enable the first valve element to reach a stress balance state. According to the manual valve and the forklift, the problem that the controllability of the forklift is poor is solved.
本申请涉及一种手动阀及叉车,手动阀包括主阀体、阀杆和补偿阀,主阀体设有阀腔、工作通道和第一回油通道,阀杆可活动地设置于阀腔内;补偿阀包括第一阀体、第一弹性件和第一阀芯,第一弹性件对第一阀芯施加朝向靠近第一阀体方向的预设拉力作用;当手动阀处于下降工况时,工作通道通过阀杆进入第一回油通道的油液能够对第一阀芯远离第一阀体的一端施加第一压力作用;工作通道的油液能够进入第一内腔并对第一阀芯靠近第一弹性件的一端施加第二压力作用;第一压力作用、第二压力作用和预设拉力作用能够使第一阀芯达到受力平衡状态。本申请提供的手动阀及叉车,解决了叉车的可控性比较差的问题。
Manual valve and forklift
手动阀及叉车
2024-11-15
Patent
Electronic Resource
Chinese
IPC: | F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / F16K VALVES , Ventile |