丹佛斯51系列变量马达服务培训

丹佛斯51系列变量马达服务培训

Sauer-DanfossSeries 51 Service Training 51系列变量马达服务培训 系列变量马达服务培训

丹佛斯51系列变量马达服务培训

Series 51 and 51-1Bent Axis Variable Displacement Motors弯轴变量马达

丹佛斯51系列变量马达服务培训

Series 51 Overview 纲要 Motor sizes and Definition Features of the Rotating Group Features of the End cap Controls Port location and Gauge installation Adjustment Minor repair

丹佛斯51系列变量马达服务培训

Series 51 & 51-1 Product Range Five displacements 5种排量:– – – – – 60 cc/rev (3.66 CIR)* 80 cc/rev (4.92 CIR)** 110 cc/rev (6.71 CIR)** 160 cc/rev (9.82 CIR) 250 cc/rev (15.26 CIR)

Speeds 速度– 7000 rpm(Max. at min. disp.)

Pressures 压力– 480 bar (7000 psi) Max. * 51-1 only ** 51 & 51-1

丹佛斯51系列变量马达服务培训

Series 51 Cross-section 51马达截面 马达截面控制阀 Control valve 最小排量限制器 Minimum displacement limiter 配油块 Valve segment 支撑盘 Bearing plate 圆锥滚柱轴承 Tapered roller bearings

轴Shaft

SAE法兰 flange 同步轴 Synchronizing shaft

柱塞 Piston 缸体 Cylinder block 伺服活塞 Servo piston 补油溢流阀 Charge pressure relief valve

丹佛斯51系列变量马达服务培训

Series 51 at Min Displacement

丹佛斯51系列变量马达服务培训

Series 51-1 Cross-section 51-1马达截面 马达截面

丹佛斯51系列变量马达服务培训

Concept Maximum angle 最大摆角: 32 deg.– High starting torque (80% of running torque). – Compact unit envelope / size / weight.

Minimum angle 最小摆角: 6 deg. 9 pistons for high efficiency 高效率柱塞 Constant velocity synchronizing joint 等速同步铰接 Displacement ratio 排量比: 5:1.– Infinitely variable. – High vehicle speeds without gear shifting. – High corner horsepower.

丹佛斯51系列变量马达服务培训

Series51

Nameplate 铭牌

Model Code (nomenclature): 51V080 RS1N L1B1 WB31 ADA 051AAF0 D400 Model Number: 5084092 Serial Number: N982211215

丹佛斯51系列变量马达服务培训

Series51-1 Nameplate 铭牌Model Code (nomenclature): 51D110-1-RD4N E1B1 NNU2 ADD 030AAA3 0000 Model Number: 511685 Serial Number: N973212355

丹佛斯51系列变量马达服务培训

PICTORIAL DIAGRAM 图解示意图

丹佛斯51系列变量马达服务培训

SYSTEM CIRCUIT DIAGRAM 系统原理图

丹佛斯51系列变量马达服务培训

Rotating Group 旋转组件

丹佛斯51系列变量马达服务培训

Endcap and rotating components 后盖和旋转组件

丹佛斯51系列变量马达服务培训

Pistons 柱塞

Piston ring– Only for sealing – No side loading of pistons in block

Brass sockets pressed into the shaft– No break in – Higher power – Pressure lubricated

Drilled piston– Weight approximately 1/3 of solid piston – Pressure balance

丹佛斯51系列变量马达服务培训

Scored Piston

Scoring on pistons is caused by loss of lubrication. Loss of lube. can be caused by; to low viscosity of the oil from over heat or just to thin of oil, improper oil (poor lubricating qualities), or over speed. The piston movies so fast back and forth in its bore that it losses its oil film. The piston land wears down enough to allow the ring (at least ½ of it) to come out of its groove and break. The pieces of the ring usually end up in the motor case or in the drain line. But not always, some pieces can go into the system loop and cause damage.