Extbase Variable Dump
TW\Twglossary\Domain\Model\Glossaryprototypepersistent entity (uid=82, pid=118)
   headline => protected'Bumper' (6 chars)
   subheadline => protected'What is a bumper in lifts?' (26 chars)
   title => protected'Bumper' (6 chars)
   description => protected'<div>A pliable shock absorber that is placed at the end of the lift hoistway
      , that is operated either hydraulically, by springs or similar installations
      . They have to slow down a car that impacts at rated speed, without the dece
      leration exceeding a specific value. This should ensure that no-one in the c
      ar is harmed by an operational deficiency and all too fierce impact on the b
      umper</div> <div>Bumpers are mounted onto steel or concrete bases in the ho
      istway pit or at the underside of the car’s supporting frame or the counte
      rweight frame.<br /><br /></div> <div>In the case of low operating speeds r
      ubber made buffers are mostly used, whereas high operating speeds require en
      ergy dissipation type hydraulic buffers.</div>
' (732 chars) related => protectedTW\Twglossary\Domain\Model\Glossaryprototypepersistent entity (uid=41, pid=118) headline => protected'Gripping device' (15 chars) subheadline => protected'What does the gripping device do in lifts?' (42 chars) title => protected'Gripping device' (15 chars) description => protected'A mechanical safety arrangement that retards the free fall of a lift cage an
         d ultimately saves it from crashing down. <br /><br />The car is automatical
         ly slowed down and halted if it should break the speed-limit. The gripping d
         evice works similar to a break utilised in cars.<br /><br /><br />
' (294 chars) related => protectedTW\Twglossary\Domain\Model\Glossaryprototypepersistent entity (uid=47, pid=118) headline => protected'Overspeed governor' (18 chars) subheadline => protected'What is an overspeed governor?' (30 chars) title => protected'Overspeed governor' (18 chars) description => protected'Lifts are equipped with gripping devices to save people from being harmed wh
            ile using or working on lift systems. The gripping device is triggered by th
            e overspeed governor once the speed-limit is broken.<br /><br />The overspee
            d governor is composed of two sheaves one at the top and one at the bottom o
            f the shaft pit. <br />A steel cable is guided over these rollers, with its
            ends fastened to the gripping device on the car. This safety installation is
             activated automatically once the elevator breaks the speed-limit.
' (522 chars) related => protectedTW\Twglossary\Domain\Model\Glossaryprototypepersistent entitysee above (uid=41, pid=118) uid => protected47 (integer) _localizedUid => protected172 (integer)modified _languageUid => protected3 (integer)modified _versionedUid => protected47 (integer)modified pid => protected118 (integer)
uid => protected41 (integer) _localizedUid => protected166 (integer)modified _languageUid => protected3 (integer)modified _versionedUid => protected41 (integer)modified pid => protected118 (integer)
uid => protected82 (integer) _localizedUid => protected207 (integer)modified _languageUid => protected3 (integer)modified _versionedUid => protected82 (integer)modified pid => protected118 (integer)
Glossary

Bumper

What is a bumper in lifts?

A pliable shock absorber that is placed at the end of the lift hoistway, that is operated either hydraulically, by springs or similar installations. They have to slow down a car that impacts at rated speed, without the deceleration exceeding a specific value. This should ensure that no-one in the car is harmed by an operational deficiency and all too fierce impact on the bumper

Bumpers are mounted onto steel or concrete bases in the hoistway pit or at the underside of the car’s supporting frame or the counterweight frame.

In the case of low operating speeds rubber made buffers are mostly used, whereas high operating speeds require energy dissipation type hydraulic buffers.

see also : Gripping device

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