The utility model discloses two position six way reversing valve of a more convenient processing, which comprises a valve body and valve body with the spool, spool ends with an end cover, the inner wall of the valve body is provided with seven circular grooves between two adjacent circumferential grooves are matched with the valve body, ring tank five the shoulder and the four interval is set on the valve core, the outer lateral shoulder and the valve body with a central, intermediate shaft shoulder and the valve body with a matched, body is arranged inside the hole communicated with the outer end of the two circumferential grooves, the valve body is also provided with six corresponding to the connected through holes six adjacent circumferential grooves. Because the valve does not need processing axial holes and radial holes, the processing is more convenient, the internal resistance is small, the pipeline is not easy to heat, compact structure, small volume, connected to a rod cavity and a non rod cavity oil outlet can be no size difference, a reversing valve can realize reversing operation, convenient and fast, especially for the promotion the use of high and low voltage switch pump in the concrete.
【技术实现步骤摘要】
本技术涉及一种液压换向阀,尤其是一种二位六通换向阀。
技术介绍
在液压系统中,常常需要实现高、低压之间的切换,优选采用以二位六通先导换向阀来实现所述切换,以减少阀门数量,简化操作。于2006年11月22日公开的,公告号为C拟839687Y的中国技术专利“二位六通先导换向阀”中,公开了一种换向阀,其包括换向阀、主阀体、主阀芯和端盖,主阀芯位于主阀体内以螺纹连接,主阀体两端有端盖,主阀体内壁开有六条圆周槽,主阀体两端还开有连通外界的沉孔;主阀芯上有四条槽,靠近两端的槽内有径向孔,主阀芯内还有轴向孔和径向孔连通;端盖上有通孔,内有调节杆,调节杆和主阀芯相连,调节杆上有固定螺母;换向阀位于主阀体上,其进油口 P与控制油进油口 X相通,出油口 T和控制油出油口 Y相通。其优点在于仅用一个换向阀就可实现高低压切换、结构紧凑,其不足之处在于主阀芯上有轴向孔和径向孔,尤其是径向孔加工困难,成本较高,并且主阀芯两端A2-B2的油道截面积小于主阀芯中部的Al-Bl的油道截面积,使用时需要区别连接到油缸的有杆腔和无杆腔,使用不够方便,由于径向孔直径小,内部阻力大,管路容易发热。技术 ...
【技术保护点】
1.二位六通换向阀,包括阀体(2)和与阀体(2)的内腔(20)配合的阀芯(3),阀芯(3)两端有封闭内腔(20)的端盖(4),其特征是:所述阀体(2)的内壁(24)上开设有七条圆周槽(21),相邻的两条圆周槽(21)之间为阀体配合部(23),阀芯(3)上有五个轴肩及由此形成的四条间隔设置的环形油槽(31),最外侧的外侧轴肩(32)与阀体(2)配合,中间的中部轴肩(33)与阀体配合部(23)配合,阀体(2)内设置有连通最外端的两条圆周槽(21)的连通孔(22),阀体(2)上还设置有六个一一对应连通到相邻的六个圆周槽(21)的通孔(25)。
【技术特征摘要】
【专利技术属性】
技术研发人员:赵宗银,杨秋瑾,张方彪,
申请(专利权)人:四川建设机械集团股份有限公司,
类型:实用新型
国别省市:90
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