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先导阀(单、双手柄)Pilot Valve (single/double handles)
1、基本特点: Characteristic
  DJS 系列先导阀是为引进国外 950B、966D 和 980S 轮式装载机的国产化配套元件。该阀与 D32 液动多路换向阀组合,主要配套于 ZL40、ZL50、ZL60 等大、中型装载机,亦可用于如推土机等其它大、中型工程机械的工作装置液压系统。
  DJS 先导阀为减压式比例先导阀,采用分片式结构,设有电磁铁定位,可根据多路阀的联数及功能要求而任意组合; DJS2-0.00b 先导阀是在 DJS 两联先导阀基础上改进而成的整体式先导阀,相比分片式先导阀结构更灵巧、操作力更轻、性能更稳定;而 DXS-00 先导阀又是在以上两种阀基础上开发的单手柄先导阀,单手柄操作结构适合用户习惯、契合市场潮流。整体式及单手柄先导阀今后将根据市场需求,开发三联阀。
  DJS series pilot valve is designed for 950B, 966D and 980S wheel loaders. This valve works together with D32 hydraulic valve and is mounted on middle/big loaders like ZL40, ZL50 and ZL60. It also could be mounted in hydraulic system of other big machines like bulldozers.
  DJS pilot valve is a kind of pressure-reduced proportion pilot valve with section structure. There is electromagnetism for orientation and could be combined according to the spool piece and function of valve. DJS2-0.00b pilot valve is integrated and improved at the base of double-spool pilot valve. It is more flexible, lighter control force and better performance than section pilot valve. DXS-00 is new developed pilot valve with single handle at the base of upper two. Single handle is suitable for customers ' operating habit and meet market requirement. According to the market requirement, three-spool valve of Integrated and single pilot valve will be developed.
  ★结构紧凑,功能齐全,工作可靠;
  ★ 减压式比例先导阀控制大大减少了换向操纵力;为液压系统的布置提供便利,从而缩短管路,减少整个液压系统的压力损失;大大改善多路阀的微动特性,增大了调整范围。
  ★先导阀在举升和收斗位置设有电磁定位,通过调整动臂和转斗上的限位器,可方便地实现铲斗任意位置的自动放平控制和动臂举升高度的垂直限位,简化了操作程序,减轻了劳动强度;
  ★先导阀控制油口输出的二次压力呈线性变化,使调速性能更好,相应调速范围更宽。
  ★Compact structure, overall function, reliable operation
  ★Pressure-reduced proportion pilot valve significantly lessens control force. It is convenient for the layout of hydraulic system. The pipes are shortened and the pressure loss of whole system is reduced. It improved jiggle performance of multi-channel valve and increased adjusting range.
  ★Pilot valve has electromagnetism for orientation when the cylinder is at lift and tilt position. By adjusting limiters at lift cylinder and tilt cylinder, it could realize the functions which the bucket lays even automatically and the height of lift cylinder is limited vertically. Operation procedure is simplified and the labor intensity is reduced.
  ★Secondary pressure outputted from control oil port of pilot valve is linear change. It makes speed-adjusting performance better and adjusting range wider.
2、系统原理图
4、技术数据
 

★ 公称压力 2.5 MPa
★ 最大压力 5 MPa
★ 公称流量 10 L / min
★ 最大流量 15 L / min
★ 控制压力范围
转斗联 0.5 ~ 2.5 MPa
动臂联 0.5 ~ 2.0 MPa
★ 电磁铁工作电压 直流 24V
★ 电磁铁工作电流 500 ~ 520 mA
( 在常温、电压 24 V)
★ 电磁铁工作温度 - 40 ~ 121 ℃
★ 电磁铁额定吸力 280 N
★ 粘度范围 28 ~ 50 mm2/s
★ 油液温度范围 - 20 ~ +80 ℃ 
★ 油液清洁度
油液及系统的清洁度不低于 GB/T 14039-93 19/16 级
或 NAS 1638 10 级。

5、安装连接尺寸
 

6、近似质量 (DJS)
基本阀组 13.8 kg
三联阀组 19 kg
7、安装方位
任选

 
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地址:山东省青州市康屯社区(青州市益王府北路)