The utility model relates to a hydraulic buffer circuit, which comprises an oil cylinder, oil tank, valve, one-way valve, balance valve, electro-hydraulic valve installed in the valve block, the oil tank is connected with the valve block into the oil, the oil return port, valve block two oil outlet are respectively connected with the two cylinder cavity. The cylinder valve block in the forward and backward channel, which is characterized in that the valve block is connected with the oil cylinder rodless cavity and connected between the oil return port is provided with a damping hole two channels. The utility model has the advantages that when the utility model is powered off, the oil cylinder is used as a buffer. At this time there will be no cylinder pressure between the rod chamber and balance valve, the damping hole can make the pressure oil here slowly released into the fuel tank, the cylinder rod smooth stop at a certain point, not out due to excessive back pressure, and convenient maintenance.
【技术实现步骤摘要】
本技术属于液压控制
,尤其是一种液压缓冲回路。
技术介绍
在工程机械传动系统中,液压缸作为动作的执彳丁机构起着很大的作用。在一部分情况下,液压缸起的是缓冲作用。例如在流水线作业中,工件从上一工位转移到下一工位需要有一个缓冲的机构,尤其是在速度快、重量大的情况下,用油缸来缓冲设备前进的冲击力效果明显、动作平稳有效。目前的液压缓冲回路的油缸退回后不能保持缩位,有向前窜动的趋势,或者是结构复杂不便于控制。
技术实现思路
本技术的目的在于克服现有技术的不足,提供一种结构简单、使用方便、重量小、体积小、且便于控制、动作精准的液压回路。本技术解决其技术问题是通过以下技术方案实现的:一种液压缓冲回路,包括油缸、油箱、阀块,在阀块上依次安装有单向阀、平衡阀、电液阀,所述油箱连接阀块的进油、回油口,阀块的两个出油口分别连接油缸的两腔,阀块内有使油缸前进和后退的通道,其特征在于:在阀块内连接油缸无杆腔与连接回油口两条通道之间设置一阻尼孔。本技术的优点和有益效果为:当电液阀断电时,油缸用作缓冲器,伸出的油缸杆被动退回。缓冲停止后,此时油缸与平衡阀之间会存在一定的背压,该阻尼孔可使其 ...
【技术保护点】
一种液压缓冲回路,包括油缸、油箱、阀块,在阀块上依次安装有单向阀、平衡阀、电液阀,所述油箱连接阀块的进油、回油口,阀块的两个出油口分别连接油缸的两腔,阀块内有使油缸前进和后退的通道,其特征在于:在阀块内连接油缸无杆腔与连接回油口两条通道之间设置一阻尼孔。
【技术特征摘要】
1.一种液压缓冲回路,包括油缸、油箱、阀块,在阀块上依次安装有单向阀、平衡阀、电液阀,所述油箱连接阀块的进油、回油口,阀块的两个出油口分别连接油缸的两腔,阀块内有使油缸...
【专利技术属性】
技术研发人员:任玉宝,冉强,赵治宇,
申请(专利权)人:致恒天津实业有限公司,
类型:实用新型
国别省市:
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