EP1626028A1 - Scherenhubtisch - Google Patents

Scherenhubtisch Download PDF

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Publication number
EP1626028A1
EP1626028A1 EP04380169A EP04380169A EP1626028A1 EP 1626028 A1 EP1626028 A1 EP 1626028A1 EP 04380169 A EP04380169 A EP 04380169A EP 04380169 A EP04380169 A EP 04380169A EP 1626028 A1 EP1626028 A1 EP 1626028A1
Authority
EP
European Patent Office
Prior art keywords
power
shaft
motor
scissor
clutch
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.)
Withdrawn
Application number
EP04380169A
Other languages
English (en)
French (fr)
Inventor
Adelardo Lopez Alba
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.)
Transportes Continuos Interiores SA
Original Assignee
Transportes Continuos Interiores SA
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 Transportes Continuos Interiores SA filed Critical Transportes Continuos Interiores SA
Priority to EP04380169A priority Critical patent/EP1626028A1/de
Publication of EP1626028A1 publication Critical patent/EP1626028A1/de
Withdrawn legal-status Critical Current

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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
    • B66F7/065—Scissor linkages, i.e. X-configuration

Definitions

  • the present invention refers to a lift table, i.e. a table whose platform or tabletop is susceptible to adopting different positions in height with the collaboration of a scissor-type mechanism, such as those used in repair shops, warehouses, and the like.
  • the object of the invention is to achieve a table which, in addition to performing its function as such lift element, provides maximum functional assurances against a possible failure in its drive mechanisms, and in parallel, provides great operating ease from the maintenance point of view.
  • Lift tables are known with a scissor-type lift system, in which the arms of the scissor are assembled with rotational possibility with regard to the table base and the tabletop at one of their ends, whereas at the other end they are susceptible to moving on guides operatively arranged in said elements, such that the scissor is susceptible to being folded in a practically horizontal and lower position corresponding to the position of the lower limit of the tabletop, and being extended from this position until reaching maximum height for said tabletop.
  • lift tables usually incorporate one or more conveniently power-operated spindles.
  • European patent EP 0724540 in which a lift table with a scissor-like lift system is disclosed, in which a motor acts by means of a threaded spindle on several pivoting connecting rods in turn acting on the scissor arms, causing the table to lift or lower.
  • Said geared motor is located on the imaginary longitudinal axis of the table and the belts are symmetrically located at both sides of said axis.
  • the table incorporates two geared motors coupled to a common shaft through respective clutches, such that under normal conditions, it is one of these geared motors that is operative and clutched to said common shaft, whereas the other one is inoperative and declutched, while due to a possible failure in the operative motor, the declutching of the latter and the automatic clutching and running of the second motor which operatively replaces the first one occurs automatically.
  • said geared motors are located in side areas of the table, outside of the structure and tabletop thereof, which implies very easy access thereto in maintenance works.
  • the lift table proposed by the invention comprises scissor arms (1-2) hinge-assembled on an intermediate pivot shaft (3), these arms (1) and (2) being collapsible at on of their ends with regard to the table base (4) and the tabletop (5) through the respective pivot shafts (6) and (7), whereas at their other end said arms (1) and (2) are finished off in rolling elements (8) and (9), sliding on the guides (10) and (11) operatively arranged on the base (4) and the tabletop (5).
  • Acting on the opposite sides of the scissor arms (1) and (2) are two transverse thrust shafts (12) and (13), parallel to the rotating shaft (3) of the scissor arms, and which cause the hinging of the scissor as they approach one another for the upward movement of the tabletop (5) and vice versa, said thrust shafts (12) and (13) being connected by means of a pair of side belts (14) and (15) fixed at one of their ends, with the collaboration of respective tension members (16), to one of said shafts, and which, after wrapping around both thrust shafts (12) and (13), are directed towards respective conveniently power-operated wrap sheaves.
  • the wrap sheaves (17-18) of the belts (14) and (15) are keyed to a common shaft (19), to which respective geared motor groups (20-20') are coupled at the same time at their ends, which are located outside of the frame of the table, as is observed in any of Figures 2 and 3, with the special particularity that said geared motors (20-20') are connected to the common shaft (19) through respective clutches (21-21') which allow the mechanical connection to/disconnection from said shaft.
  • An electronic control circuit of said geared motors makes one of said motors (20) exclusively operate normally, and that in turn it is kept clutched to the shaft (19), whereas the other motor (20') is disconnected and inoperative.
  • the electronic circuit interrupts the power supply of the motor (20) operating until that moment, causes the declutching thereof from the shaft (19) and simultaneously establishes the power supply for the other motor (20') and its clutching to the shaft (19), therefore the functioning capacity of the table is not interrupted despite the failure which has occurred.
  • the out-of-service motor (20) can easily be removed for its repair or replacement.
  • Another feature which this table can have is that of using the two motors (20 and 20') so that they operate in a unitary or redundant manner, without clutches, and with a manual mechanism for their coupling/decoupling, for example on the transmission chains.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Transmission Devices (AREA)
EP04380169A 2004-08-11 2004-08-11 Scherenhubtisch Withdrawn EP1626028A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04380169A EP1626028A1 (de) 2004-08-11 2004-08-11 Scherenhubtisch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04380169A EP1626028A1 (de) 2004-08-11 2004-08-11 Scherenhubtisch

Publications (1)

Publication Number Publication Date
EP1626028A1 true EP1626028A1 (de) 2006-02-15

Family

ID=34931859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04380169A Withdrawn EP1626028A1 (de) 2004-08-11 2004-08-11 Scherenhubtisch

Country Status (1)

Country Link
EP (1) EP1626028A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108497696A (zh) * 2018-03-30 2018-09-07 厦门乐范健康科技有限公司 一种自动升降桌和控制系统
CN108713863A (zh) * 2018-07-25 2018-10-30 哈尔滨学院 一种体育理论讲座辅助装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0724540A1 (de) * 1993-10-27 1996-08-07 Stamm Johann Scherenhubtisch
EP1342429A1 (de) * 2002-03-07 2003-09-10 Transportes Continuos Interiores S.A. Scherenhubtisch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0724540A1 (de) * 1993-10-27 1996-08-07 Stamm Johann Scherenhubtisch
EP1342429A1 (de) * 2002-03-07 2003-09-10 Transportes Continuos Interiores S.A. Scherenhubtisch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108497696A (zh) * 2018-03-30 2018-09-07 厦门乐范健康科技有限公司 一种自动升降桌和控制系统
CN108497696B (zh) * 2018-03-30 2023-12-05 厦门乐范健康科技有限公司 一种自动升降桌和控制系统
CN108713863A (zh) * 2018-07-25 2018-10-30 哈尔滨学院 一种体育理论讲座辅助装置

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