DK160019B - Hydraulic lifting table of the scissors type - Google Patents

Hydraulic lifting table of the scissors type Download PDF

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Publication number
DK160019B
DK160019B DK528088A DK528088A DK160019B DK 160019 B DK160019 B DK 160019B DK 528088 A DK528088 A DK 528088A DK 528088 A DK528088 A DK 528088A DK 160019 B DK160019 B DK 160019B
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DK
Denmark
Prior art keywords
scissor
scissor arms
power transmission
rollers
lifting
Prior art date
Application number
DK528088A
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Danish (da)
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DK528088D0 (en
DK160019C (en
DK528088A (en
Inventor
Lars Johansson
Original Assignee
Hymo Ab
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Publication of DK528088D0 publication Critical patent/DK528088D0/en
Publication of DK528088A publication Critical patent/DK528088A/en
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Application granted granted Critical
Publication of DK160019C publication Critical patent/DK160019C/en

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Classifications

    • 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
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
    • 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
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
  • Handcart (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Lubricants (AREA)

Abstract

Arrangement for a hydraulic lifting table of the scissor type. This has two pairs of mutually attached scissor arms (1a, 1b; 2a, 2b), which at their ends are connected by means of pivots and rollers to a lower frame section (3) and an upper table section (4). The scissor arms (1a, 1b; 2a, 2b) are mutually and operatively connected to the pivotable connection (5) to the frame section (3). The lifting table comprises a power transmission arrangement (7, 8, 9, 11) for raising and lowering the table section (4). The invention is characterized in that the power transmission arrangement (7, 8, 9, 11) contains for each pair of scissor arms (1a, 1b; 2a, 2b) a hydraulic cylinder (7a; 7b) pivotally mounted at said connection (5). The piston rod (8a, 8b) of the cylinder is so arranged as to interact via rollers (9a, 9b, 9c) with guide curves (11a, 11b, 11c) arranged in conjunction with the common bearing shaft (1c, 2c) for the scissor arms (1a, 1b; 2a, 2b) and operatively connected to the respective scissor arm (1a, 1b; 2a, 2b).

Description

DK 160019 BDK 160019 B

Den foreliggende opfindelse angår et hydraulisk løftebord af saksetypen med to par indbyrdes forbundne saksearme, der ved deres ender er forbundet ved hjælp af hængsler og ruller til en nederste rammedel og en øverste borddel, og som begge er funktionsmæssigt forbundet til 5 rammedelen ved hjælp af en hængselforbindelse, hvilket løftebord omfatter en kraftoverføringsindretning til at hæve og sænke borddelen.The present invention relates to a scissor-type hydraulic lifting table with two pairs of interconnected scissor arms connected at their ends by hinges and rollers to a lower frame member and an upper table member, both of which are operatively connected to the frame member by means of a hinge connection, said lifting table including a power transmission device for raising and lowering the table part.

Når det drejer sig om den type løfteborde, som er beregnet til at blive brugt fx i forbindelse med en manuelt fungerende truck eller i automobilværksteder til at hæve et køretøj til en passende arbejds-10 højde for udførelse af reparation, er det af værdi, at løftebordet har den mindst mulige minimumhøjde. Denne højde afhænger dels af kraftoverføringsindretningens dimensioner, da disse skal omsluttes af bordet i sammenklappet stilling, dels af bordets mekaniske konstruktion under hensyntagen til den ønskede løftekapacitet og stabi-15 litet. På den anden side bestemmes bordets løftekapacitet af det maksimale tryk fra kraftoverføringsindretningen. Et hydraulisk løftebord af den her omhandlede art kendes fra SE B 450846.In the case of the type of lifting tables intended to be used, for example, in connection with a manually operated truck or in automobile workshops to raise a vehicle to an appropriate working height for carrying out repairs, it is of value that the lifting table has the minimum possible height. This height depends partly on the dimensions of the PTO as they must be enclosed by the table in a collapsed position and partly on the mechanical construction of the table, taking into account the desired lifting capacity and stability. On the other hand, the lifting capacity of the table is determined by the maximum pressure from the PTO. A hydraulic lifting table of this type is known from SE B 450846.

I de hidtil kendte løfteborde af den her omhandlede type er kraftoverføringsindretningen hængselforbundet til rammedel en og anbragt på 20 en sådan måde, at der, når løftebordet hæves, udøves en adskillende påvirkning på føringskurver, der ved hængselforbindelsen til rammedelen er funktionsmæssigt forbundet til denne og til den ene saksearm i hvert par saksearme.In the prior art lifting tables of this type, the power transmission device is hinged to frame part one and arranged in such a way that when the lifting table is raised, a separate influence is exerted on guide curves which are functionally connected thereto by the hinge connection to the frame part. one scissor arm in each pair of scissors.

Da der ved denne udformning dannes et drejningsmoment ved den ene en-25 de af de respektive saksearme, skal denne type saksearm være konstrueret til at kunne modstå den resulterende spænding langs hele sin længde. Dette betyder, at løftebordet som en konsekvens af saksearmens dimension gives en minimumhøjde, der er uacceptabelt stor til mange anvendelser.Since in this embodiment a torque is formed at one end of the respective scissor arms, this type of scissor arm must be designed to withstand the resulting tension along its entire length. This means that as a consequence of the scissor arm dimension, the lifting table is given a minimum height that is unacceptably large for many applications.

30 Det er formålet med den foreliggende opfindelse at tilvejebringe et hydraulisk løftebord, i hvilket de ovennævnte ulemper er elimineret, hvilket muliggøres med en kombination af følgende karakteristiske træk:It is the object of the present invention to provide a hydraulic lifting table in which the aforementioned disadvantages are eliminated, which is made possible by a combination of the following characteristic features:

DK 160019BDK 160019B

2 kraftoverføringsindretningen indeholder til hvert par af saksearme en hydraulisk cylinder, der er drejeligt monteret til forbindelsen, den hydrauliske cylinders stempelstang er indrettet til under løftebordets hæve- og sænkebevægelse via ruller at indgribe med mindst to 5 føringskurver, der er placeret i forbindelse med saksearmenes fælles lejringsaksel og er funktionsmæssigt forbundet til de tilhørende saksearme , og de indbyrdes og funktionsmæssigt forbundne saksearme, som er funktionsmæssigt forbundet til rammedelen, og som udgøres af en bjælke 10 med U-formet tværsnit, der er åben opad, i hvilken bjælke den tilhørende kraftoverføringsindretning er placeret.2 the PTO includes for each pair of scissor arms a hydraulic cylinder pivotally mounted to the connection, the piston rod of the hydraulic cylinder adapted to engage, during rollers raising and lowering movement, by rollers, with at least two 5 guide curves located in connection with the scissor arms joint bearing shaft and is operably connected to the associated scissor arms, and the interconnected and functionally connected scissor arms, which are functionally connected to the frame member, which is constituted by a beam 10 of U-shaped cross section open upwards, in which beam the associated power transmission device is located.

Opfindelsen vil i det følgende blive nærmere forklaret under henvisning til tegningen, på hvilken fig. 1 perspektivisk viser en udførelsesform for løftebordet ifølge 15 den foreliggende opfindelse, og fig. 2 detaljer af samarbejdet mellem kraftoverføringsindretningen og føringskurverne, set fra siden.The invention will now be explained in more detail with reference to the drawing, in which: FIG. 1 is a perspective view of one embodiment of the lifting table according to the present invention; and FIG. 2 side view of the cooperation between the PTO device and the guide curves.

Henvisningsbetegnelserne la, lb og 2a, 2b benyttes i fig 1 for sakse-arme, der er forbundet ved hjælp af aksler lc, 2c til et hydraulisk 20 løftebord af saksetypen, hvilket bord består af en nederste rammedel 3 og en øverste borddel 4. Saksearmene la, 2a er begge forblindet ved deres nederste ender til en aksel 5, og de er i forhold til rammedelen 3 vipbart monteret omkring akslen. De øverste ender af saksearmene lb, 2b er vipbart monteret på borddelen 4. De nederste ender af 25 saksearmene lb, 2b og de øvers te ender af saksearmene la, 2a er udformet med ruller 6, af hvilke dem ved den øverste ende af saksearmen 2a og dem ved den nederst ende af saksearmen 2b ikke er vist på tegningen. Formålet med rullerne er at lette bevægelsen af de førnævnte ender af saksearmene langs rammedelen 3 og borddelen 4.Reference numerals 1a, 1b and 2a, 2b are used in Fig. 1 for scissor arms connected by shafts 1c, 2c to a hydraulic scissor type lifting table, which consists of a lower frame member 3 and an upper table part 4. Scissor arms 1a, 2a are both blinded at their lower ends to a shaft 5 and they are pivotally mounted around the shaft relative to the frame portion 3. The upper ends of the scissor arms 1b, 2b are tiltably mounted on the table part 4. The lower ends of the scissor arms 1b, 2b and the upper ends of the scissor arms 1a, 2a are formed with rollers 6, of which at the upper end of the scissor arm 2a and those at the lower end of the scissor arm 2b are not shown in the drawing. The purpose of the rollers is to facilitate the movement of the aforementioned ends of the scissor arms along the frame portion 3 and the table portion 4.

30 Hver af saksearmene la og 2a består af en bjælke med TJ-formet tværsnit, der er åben opad, i hvilken der vipbart monteret på akslen 5 er placeret hydrauliske cylindre 7a og 7b til at hæve og sænke borddelen 4. Hver af saksearmene lb og 2b er fremstillet af to flade stålprofiler, der er forbundet ved deres respektive ender ved hjælp af tvær-35 stykker.Each of the scissor arms 1a and 2a consists of a beam with TJ-shaped cross section open upwards, in which tiltably mounted on the shaft 5 are placed hydraulic cylinders 7a and 7b for raising and lowering the table part 4. Each of the scissor arms 1b and 2b is made of two flat steel profiles connected at their respective ends by means of cross-pieces.

Claims (3)

3 DK 160019B Da kraftoverførslen fra cylindrene 7a og 7b til saksearmsparrene la, lb og 2a, 2b er udformet på samme måde, vil kun den kraftoverførsel, der hører til cylinderen 7a, blive beskrevet i det følgende under henvisning til fig. 2.3 DK 160019B Since the power transmission from the cylinders 7a and 7b to the scissor arm pairs 1a, 1b and 2a, 2b is designed in the same way, only the power transmission belonging to the cylinder 7a will be described below with reference to FIG. 2nd 5 Der er arrangeret tre ruller 9a, 9b og 9c på en fælles aksel 10 ved den yderste ende af den hydrauliske cylinder 7a's stempelstang 8a. Rullen 9b samvirker med føringskurven 11b, som er funktionsmæssigt forbundet til saksearmen lb. Rullerne 9a og 9c, som er placeret på hver sin side af rullen 9b for at opnå en symmetrisk belastningsfor-10 deling, samvirker med to føringskurver 11a og 11c, der er funktionsmæssigt forbundet til saksearmen la. Føringskurverne 11a og 11c har en lineær skråflade, og deres primære funktion er at tilvejebringe en momentarm, angivet med 12 i fig. 2, mellem rullen 9b's indgrebspunkt med føringskurven 11b og den fælles vippevinkel for saksearmene la, 15 lb. Den kendsgerning, at den nødvendige løftekraft er delt mellem de to hydrauliske cylindre 7a, 7b gør det muligt, at disse dimensioner kan holdes inden for sådanne grænser, at løftebordet har en meget lille minimumhøjde. Et yderligere bidrag hertil gives også ved det karak-20 teristiske træk ved opfindelsen, der går på, at de føringskurver 11a, 11b og 11 c, imod hvilke løftekraften virker, er placeret på den fælles understøtning for de respektive par af saksearme.5 Three rollers 9a, 9b and 9c are arranged on a common shaft 10 at the outer end of the piston rod 8a of the hydraulic cylinder 7a. The roller 9b cooperates with the guide curve 11b, which is functionally connected to the scissor arm 1b. The rollers 9a and 9c, located on either side of the roll 9b to obtain a symmetrical load distribution, cooperate with two guide curves 11a and 11c operably connected to the scissor arm 1a. The guide curves 11a and 11c have a linear inclined surface and their primary function is to provide a torque arm, indicated by 12 in FIG. 2, between the engagement point of the roller 9b with the guide curve 11b and the common tilting angle of the scissor arms 1a, 15 lb. The fact that the required lifting force is divided between the two hydraulic cylinders 7a, 7b allows these dimensions to be kept within such limits that the lifting table has a very small minimum height. A further contribution to this is also provided by the characteristic feature of the invention, which is that the guide curves 11a, 11b and 11c against which the lifting force acts are located on the common support for the respective pairs of scissor arms. 1. Hydraulisk løftebord af saksetypen med to par indbyrdes forbundne 25 saksearme (la, lb og 2a, 2b), der ved deres ender er forbundet ved hjælp af hængsler og ruller til en nederste rammedel (3) og en øverste borddel (4), og som begge er funktionsmæssigt forbundet til rammedelen (3) ved hjælp af en hængselforbindelse (5), hvilket løftebord omfatter en kraftoverføringsindretning (7, 8, 9, 11) til at hæve 30 og sænke borddelen (4), kendetegnet ved en kombination af følgende karakteristiske træk: 4 DK 160019 B kraftoverføringsindretningen (7, 8, 9, 11) indeholder til hvert par af saksearme (la, lb og 2a, 2b) en hydraulisk cylinder (7a, 7b), der er drejeligt monteret til forbindelsen (5), den hydrauliske cylinders stempelstang (8a, 8b) er indrettet til un-5 der løftebordets bæve- og sænkebevægelse via ruller (9a, 9b, 9c) at indgribe med mindst to. føringskurver (11a, 11b, 11c), der er placeret i forbindelse med saksearmenes (la, lb og 2a, 2b) fælles lejrings-aksel (lc, 2c) og er furiktionsmæssigt forbundet til de tilhørende saksearme (la, ib og 2a, 2b), og 10 de indbyrdes og funktionsmæssigt forbundne saksearme (la, 2a), som er furiktionsmæssigt forbundet til rammedelen (3), udgøres af en bjælke med U-formet tværsnit, der er åben opad, i hvilken bjælke den tilhørende kraftoverføringsindretning (7, 8, 9, 11) er placeret.1. Scissor-type hydraulic lift table with two pairs of interconnected 25 scissor arms (1a, 1b and 2a, 2b) connected at their ends by hinges and rollers to a lower frame member (3) and a top table member (4), and both are operably connected to the frame part (3) by a hinge connection (5), said lifting table comprising a power transmission device (7, 8, 9, 11) for raising 30 and lowering the table part (4), characterized by a combination of The following characteristic features: 4 The power transmission device (7, 8, 9, 11) includes for each pair of scissor arms (1a, 1b and 2a, 2b) a hydraulic cylinder (7a, 7b) pivotally mounted to the connection (5 ), the piston rod (8a, 8b) of the hydraulic cylinder is adapted to engage the lifting and lowering movement of the lift table via rollers (9a, 9b, 9c) with at least two. guide curves (11a, 11b, 11c) located in connection with the common bearing shaft (1c, 2c) of the scissor arms (1c, 2c) and are connected frictionally to the associated scissor arms (1a, 1b and 2a, 2b) ), and the interconnected and functionally connected scissor arms (1a, 2a), which are frictionally connected to the frame member (3), is constituted by a beam with a U-shaped cross section open upwards, in which beam the associated power transmission device (7, 8, 9, 11) are located.
DK528088A 1987-02-04 1988-09-22 HYDRAULIC LIFT TABLE OF THE SCALE TYPE DK160019C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE8700418A SE456499B (en) 1987-02-04 1987-02-04 DEVICE AT A HYDRAULIC LIFT TABLE
SE8700418 1987-02-04
PCT/SE1988/000036 WO1988005759A1 (en) 1987-02-04 1988-02-04 Arrangement for a hydraulic lifting table
SE8800036 1988-02-04

Publications (4)

Publication Number Publication Date
DK528088D0 DK528088D0 (en) 1988-09-22
DK528088A DK528088A (en) 1988-09-22
DK160019B true DK160019B (en) 1991-01-14
DK160019C DK160019C (en) 1991-06-17

Family

ID=20367389

Family Applications (1)

Application Number Title Priority Date Filing Date
DK528088A DK160019C (en) 1987-02-04 1988-09-22 HYDRAULIC LIFT TABLE OF THE SCALE TYPE

Country Status (8)

Country Link
EP (1) EP0344196B1 (en)
AT (1) ATE80124T1 (en)
AU (1) AU1293488A (en)
DE (1) DE3874328T2 (en)
DK (1) DK160019C (en)
NO (1) NO884371L (en)
SE (1) SE456499B (en)
WO (1) WO1988005759A1 (en)

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DE9302967U1 (en) * 1993-03-02 1993-04-22 Hydraulik Techniek, Emmen Scissor lift table
JP3435119B2 (en) * 2000-04-03 2003-08-11 株式会社メイキコウ Table lift equipment
CN102963837A (en) * 2012-11-16 2013-03-13 无锡阳工机械制造有限公司 Connecting method of elevator bracket structure
US10244861B1 (en) 2015-01-24 2019-04-02 Nathan Mark Poniatowski Desktop workspace that adjusts vertically
US10618472B2 (en) 2015-08-04 2020-04-14 T-Max (Hangzhou) Technology Co., Ltd. Vehicle and vehicle step apparatus with multiple drive motors
US9961989B2 (en) 2016-03-07 2018-05-08 Marc Stefan Witt Radial scissor lift table and method
US10384614B1 (en) 2018-07-20 2019-08-20 T-Max (Hangzhou) Technology Co., Ltd. Vehicle, running board assembly and drive assembly for running board
US11198394B2 (en) 2018-07-20 2021-12-14 T-Max (Hangzhou) Technology Co., Ltd. Vehicle running board apparatus and retractable device thereof
CN109015005A (en) * 2018-07-26 2018-12-18 昆明理工大学 A kind of various dimensions fixture
BE1026784B1 (en) 2018-11-13 2020-06-15 Docmans Sprl LIFTING TABLE
CN110012061B (en) 2019-02-20 2022-02-08 杭州天铭科技股份有限公司 Management device for vehicle equipment, vehicle, and server
WO2020177186A1 (en) 2019-03-05 2020-09-10 杭州天铭科技股份有限公司 Vehicle step bar device and vehicle
WO2020181617A1 (en) 2019-03-11 2020-09-17 杭州天铭科技股份有限公司 Adjustment apparatus, adjuster, and shock absorber
US11584387B2 (en) 2019-09-16 2023-02-21 T-Max (Hangzhou) Technology Co., Ltd. Step apparatus for vehicle and vehicle
WO2021227617A1 (en) 2020-05-11 2021-11-18 杭州天铭科技股份有限公司 Vehicle pedal apparatus and vehicle
WO2021227616A1 (en) 2020-05-11 2021-11-18 杭州天铭科技股份有限公司 Vehicle footboard device and vehicle

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US2937852A (en) * 1956-10-29 1960-05-24 Jesse E Clarke Lift device
DE1756270A1 (en) * 1968-04-29 1970-03-12 Katt Anton F Piston drive for scissor lifting elements
DE8229071U1 (en) * 1982-10-16 1983-06-23 Flexlift Hubgeräte GmbH, 4800 Bielefeld LIFTING DEVICE
SE450486B (en) * 1983-08-29 1987-06-29 Edmo Torbjoern Ab LIFT TABLE CONSTRUCTION

Also Published As

Publication number Publication date
DK528088D0 (en) 1988-09-22
DE3874328T2 (en) 1993-03-04
AU1293488A (en) 1988-08-24
NO884371D0 (en) 1988-10-03
DK160019C (en) 1991-06-17
SE456499B (en) 1988-10-10
SE8700418L (en) 1988-08-05
SE8700418D0 (en) 1987-02-04
WO1988005759A1 (en) 1988-08-11
NO884371L (en) 1988-10-03
EP0344196B1 (en) 1992-09-02
DE3874328D1 (en) 1992-10-08
EP0344196A1 (en) 1989-12-06
ATE80124T1 (en) 1992-09-15
DK528088A (en) 1988-09-22

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