Bosch VLE 21 Series, Инструкции по ремонту

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1 689 975 224 2013-11-06
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Robert Bosch GmbH
32 | VLE 21xx | Chain break switch en
4. Chain break switch
Contents Mode of operation of chain break switch
Applicability VLE 2130, VLE 2130 F
Fig. 6 shows the parts making up the chain break safety
mechanism.
Fig. 6: Cross-section through lifting column
No. Qty. Description Ident. no.
1 1 Support ring
2 1 Lifting nut set F/EL 1 692 872 005
3 1 Bearing element assembly
4 1 Base plate
5 1 Deep-groove ball bearing 1 692 872 031
6 1 Sprocket 1 692 872 216
7 1 Retaining ring 1 692 872 187
8 1 Clamping bar 1 692 872 188
9 1 Limit switch assembly 1 692 872 189
10 1 Limit switch plate 1 692 872190
11 1 Actuating pin 1 692 872 191
12 1 Pressure spring 1 692 872 192
13 1 Slider 1 692 872 193
Tab. 1: Key to Fig. 6
After performing trial runs at rated load, the chain
break switch is to be checked for proper operation and
adjusted if necessary.
If the chain breaks during operation of the lifting
platform, the limit switch (Fig. 6, Pos. 9) automatically
switches off the lifting platform by means of the
actuating pin (Fig. 6, Pos. 11).