Siemens MOBILETT Plus - Page 55

19 - 1
Siemens-Elema AB Register 6 SPR8-215.850.02 Page 1 of 2 MOBILETT Plus/ Plus E
Solna, Sweden Rev. 01 01.02 SPS-UD
Spring Counterweight 19
The tensile forces acting in the articulated arm are balanced with a spring counterweight.
The weight of the single tank, its supporting fork and the upper arm, are transmitted by:
• the lever in the upper arm joint,
• the bar and
• the lever in the lower arm joint to the draw bar in the shaft of the arm, see Fig. 1.
The spring between the slide stop and the support ring compensates a constant tensile for
the component.
The pressure on the roller of the shaped piece in the lower end of the arm shaft compen-
sates those variable tensile force components arising due to different arm and single tank
positions.
The tension of the disc springs in the spring pack can be varied with the adjusting screw.
Fig. 1
Enormous tensile and compressive forces are acting in
the articulated arm system.
Risk of personal injuries.
Follow the procedures exactly as described in the
Maintenance Instruction or the Service instructions
when performing repairs or adjustments.
Single tank supporting fork
Upper joint
bar
1.2 tons
Lower joint
Draw bar
Slide stop
Spring
Support ring
Disc spring
4 tons
Adjusting screw
Chassis
Counter bearings
0.64 tons
Arm profile attached to
chassis above joint
Spring pack
Chassis
Single tank
Approx. 30 kp
Force parallelogram
Shaped piece for
regulation of spring force
Chassis
WARNING