DE20211601U1 - Drop safety device for elevating platforms and suchlike has safety check valve installed inside piston in through-bore and acts as flow connection between opposed effective areas of piston - Google Patents

Drop safety device for elevating platforms and suchlike has safety check valve installed inside piston in through-bore and acts as flow connection between opposed effective areas of piston

Info

Publication number
DE20211601U1
DE20211601U1 DE20211601U DE20211601U DE20211601U1 DE 20211601 U1 DE20211601 U1 DE 20211601U1 DE 20211601 U DE20211601 U DE 20211601U DE 20211601 U DE20211601 U DE 20211601U DE 20211601 U1 DE20211601 U1 DE 20211601U1
Authority
DE
Germany
Prior art keywords
piston
flow connection
fall protection
check valve
suchlike
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE20211601U
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE20211601U priority Critical patent/DE20211601U1/en
Publication of DE20211601U1 publication Critical patent/DE20211601U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/16—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies

Abstract

The drop safety device for elevating platforms and suchlike comprises a double-acting fluid cylinder (10) with a piston (20) and piston rod (22), and a safety check valve (24) installed inside the piston and acts as a flow connection between the opposed effective areas (32,34) of the piston. The flow connection is completed by a through-bore (30) in the piston and in which is installed the safety check valve. The value of the fluid flow by which the safety check valve closes is adjustable.

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (7)

1. Absturzsicherung für Hubtische, Hebebühnen und dergleichen, mit einem doppeltwirkenden Fluidzylinder (10) mit Fluidkammern (26, 28) beiderseits eines Kolbens (20), einer von dem Kolben (20) ausgehenden Kolbenstange (22), die mit einem von zwei beim Hubvorgang gegeneinander beweglichen Teilen des Hubti­ sches oder dergleichen verbunden ist, während der Fluidzylinder (10) mit dem anderen Teil verbunden ist, wobei zwischen den Fluidkammern (26, 28) eine Strömungsverbindung (30) besteht, welche Strömungsverbindung (30) ein Siche­ rungsventil (40) umfaßt, das in beiden Richtungen durchlässig ist, beim Senk­ vorgang jedoch bei Überschreiten eines vorbestimmten Fluidstroms mechanisch schließt oder drosselt, dadurch gekennzeichnet, daß das Sicherungsventil (24) innerhalb des Kolbens (20) angeordnet ist und die Strömungsverbindung zwi­ schen den gegenüberliegenden Wirkungsflächen (32, 34) des Kolbens (20) be­ steht.1. Fall protection for lifting tables, lifting platforms and the like, with a double-acting fluid cylinder ( 10 ) with fluid chambers ( 26 , 28 ) on both sides of a piston ( 20 ), one of the piston ( 20 ) outgoing piston rod ( 22 ) with one of two at Lifting process mutually movable parts of the Hubti cal or the like is connected while the fluid cylinder ( 10 ) is connected to the other part, wherein there is a flow connection ( 30 ) between the fluid chambers ( 26 , 28 ), which flow connection ( 30 ) a fuse valve ( 40 ), which is permeable in both directions, mechanically closes or throttles the lowering process when a predetermined fluid flow is exceeded, characterized in that the safety valve ( 24 ) is arranged within the piston ( 20 ) and the flow connection between the opposite effective surfaces ( 32 , 34 ) of the piston ( 20 ) be. 2. Absturzsicherung nach Anspruch 1, dadurch gekennzeichnet, daß die Strö­ mungsverbindung durch eine Durchgangsbohrung (30) im Kolben (20) geschaf­ fen wird, in der das Sicherungsventil (40) angeordnet ist.2. Fall protection device according to claim 1, characterized in that the flow connection is created through a through hole ( 30 ) in the piston ( 20 ), in which the safety valve ( 40 ) is arranged. 3. Absturzsicherung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Wert für den Fluidstrom, bei welchem das Sicherungsventil (40) schließt, einstellbar ist.3. Fall protection device according to claim 1 or 2, characterized in that the value for the fluid flow at which the safety valve ( 40 ) closes is adjustable. 4. Absturzsicherung nach einem der Ansprüche 1 bis 3, dadurch gekennzeich­ net, daß das Sicherungsventil (40) ein in Öffnungsrichtung vorgespanntes Rückschlagventil ist.4. Fall protection according to one of claims 1 to 3, characterized in that the safety valve ( 40 ) is a non-return valve biased in the opening direction. 5. Absturzsicherung nach einem der vorhergehenden Ansprüche, dadurch ge­ kennzeichnet, daß der Fluidzylinder (10) ein Hydraulikzylinder ist.5. Fall protection according to one of the preceding claims, characterized in that the fluid cylinder ( 10 ) is a hydraulic cylinder. 6. Absturzsicherung nach einem der vorhergehenden Ansprüche, dadurch ge­ kennzeichnet, daß an der der Kolbenstange (22) gegenüberliegenden Seite des Kolbens (20) spiegelbildlich zur Kolbenstange (22) eine Ausgleichsstange ange­ ordnet ist. 6. Fall protection device according to one of the preceding claims, characterized in that on the piston rod ( 22 ) opposite side of the piston ( 20 ) is a mirror image of the piston rod ( 22 ), a compensating rod is arranged. 7. Absturzsicherung nach einem der Ansprüche 1 bis 5, dadurch gekenn­ zeichnet, daß nur auf einer Seite des Kolbens 20 eine Kolbenstange 22 vorgese­ hen ist.7. Fall protection according to one of claims 1 to 5, characterized in that a piston rod 22 is hen vorgese only on one side of the piston 20 .
DE20211601U 2002-07-16 2002-07-16 Drop safety device for elevating platforms and suchlike has safety check valve installed inside piston in through-bore and acts as flow connection between opposed effective areas of piston Expired - Lifetime DE20211601U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20211601U DE20211601U1 (en) 2002-07-16 2002-07-16 Drop safety device for elevating platforms and suchlike has safety check valve installed inside piston in through-bore and acts as flow connection between opposed effective areas of piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE20211601U DE20211601U1 (en) 2002-07-16 2002-07-16 Drop safety device for elevating platforms and suchlike has safety check valve installed inside piston in through-bore and acts as flow connection between opposed effective areas of piston

Publications (1)

Publication Number Publication Date
DE20211601U1 true DE20211601U1 (en) 2003-01-09

Family

ID=7973584

Family Applications (1)

Application Number Title Priority Date Filing Date
DE20211601U Expired - Lifetime DE20211601U1 (en) 2002-07-16 2002-07-16 Drop safety device for elevating platforms and suchlike has safety check valve installed inside piston in through-bore and acts as flow connection between opposed effective areas of piston

Country Status (1)

Country Link
DE (1) DE20211601U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007012305U1 (en) 2007-07-27 2008-12-11 Clamor, Reinhard Fall protection for a lifting device and equipped with such a fall arrester scissor lift

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007012305U1 (en) 2007-07-27 2008-12-11 Clamor, Reinhard Fall protection for a lifting device and equipped with such a fall arrester scissor lift

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20030213

R150 Term of protection extended to 6 years

Effective date: 20050812

R157 Lapse of ip right after 6 years

Effective date: 20090203