US3722627A - Two column lifting platform - Google Patents

Two column lifting platform Download PDF

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Publication number
US3722627A
US3722627A US00191878A US3722627DA US3722627A US 3722627 A US3722627 A US 3722627A US 00191878 A US00191878 A US 00191878A US 3722627D A US3722627D A US 3722627DA US 3722627 A US3722627 A US 3722627A
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US
United States
Prior art keywords
carriage
lifting
spindle
sleeve
lifting platform
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
US00191878A
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English (en)
Inventor
H Fricke
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.)
Gebr Hofmann GmbH and Co KG Maschinenfabrik
Original Assignee
Gebr Hofmann GmbH and Co KG Maschinenfabrik
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 Gebr Hofmann GmbH and Co KG Maschinenfabrik filed Critical Gebr Hofmann GmbH and Co KG Maschinenfabrik
Application granted granted Critical
Publication of US3722627A publication Critical patent/US3722627A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
    • B66F7/025—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars screw operated

Definitions

  • At least one column comprises a threaded spindle carrying a nut secured to the lifting carriage, rotation of the spindle thus displacing the carriage.
  • the carriage is also guided in its vertical movements by suitable lateral guide means.
  • the spindle passes through a stepped bore in the lifting carriage, wherein a ring of oil-absorbent material is fitted in the stepped bore so that the inside peripheral face of the ring lies in an oil-transferring relationship against the periphery of the spindle and the ring is held in position by a flange sleeve which is pressed into the stepped bore and which defines a space for containing lubricating oil, the flange portion of the flange sleeve having one or more openings through which oil can flow to saturate the ring.
  • Lifting nuts for cooperation with the threaded spindles are known, which are made entirely from bearing metal such as babbitt metal.
  • bearing metal such as babbitt metal.
  • the expensive bearing metals increase the cost of the lifting nuts. Either the breaking or tensile strength of the nuts may not be sufficient, owing to the nuts being made exclusively of bearing metal, or the forces acting on the nuts had to be allowed for by making the lifting nuts of larger dimen- SIOIIS.
  • a two-column lifting platform for lifting a motor vehicle comprising two columns and a rotary spindleoperated lifting carriage guided by the columns, the spindle passing through a stepped bore in the lifting carriage, wherein a ring of oil-absorbent material is fitted in the stepped bore so that the inside peripheral face of the ring lies in an oil-transferring relationship against the periphery of the spindle and the ring is held in position by aflange sleeve which is pressed into the stepped bore and which defines a space for containing lubricating oil, the flange portion of the flange sleeve having one or more openings through which oil can flow to saturate the ring.
  • FIG. 1 shows a longitudinal section through a part of a lifting spindle showing the lubrication thereof
  • FIG. 2 shows a partial section through part of a lifting carriage with spindle and guide means
  • FIG. 3 shows a front elevation view of the lifting platform
  • FIG. 4 shows a partial section of the lifting platform on line44 of FIG. 3;
  • FIG. 5 shows a plan view of one lifting nut
  • FIG. 6 shows a section of the lifting nut on line 66 of FIG. 5.
  • FIG. 7 is a fragmentary side elevation view with parts in section of the base region of one spindle showing portions of the lifting carriage guide means and lubricator;
  • FIG. 8 is a horizontal transverse sectional view generally comparable with the region depicted in FIG. 2.
  • a ring 2 made of felt or another absorbent material is fitted into a stepped bore 1 in the lifting carriage.
  • the ring 2 is prevented from moving in a vertical direction within the bore 1 by a flanged sleeve 4 which is a press fit in the bore 1, above the ring 2, the flange portion of the sleeve 4 being of a diameter to ensure a firm seat in the bore 1 and at the same time oil-tightly closing the bore 1 towards the ring 2.
  • the sleeve 4 is also pressed into the bore 1 to a depth such that the ring 2 cannot move in a radial direction, but is firmly held in place.
  • the outside diameter of the ring 2 is substantially equal to that of the bore 1, while its inside diameter is somewhat smaller than the diameter of a lifting spindle 3 which passes centrally through the bore in the carriage.
  • the inner vertical peripheral face of the ring 2 lies closely against the outside periphery of the lifting spindle 3.
  • the ring 2 is continuously saturated with highviscosity oil through one or more openings 5 in the flange portion of the sleeve 4 from an annular space 6 formed between the outside face of the sleeve portion of the sleeve 4 and the surrounding part of the lifting carriage the sleeve portion being of substantially smaller outside diameter than theflange portion and larger in inside diameter than the spindle 3 to ensure free motion.
  • the ring 2 thus forms an oil reserve and, moving up and down along the spindle 3 as the latter rotates, provides lubrication thereof in any lifting position of the carriage.
  • the lifting carriage 20 is guided by means of support rollers 9 carried on cantilevered, i.e., overhung, shafts.
  • a respective slide member 7 Secured to the free end face of each of the overhung shafts is a respective slide member 7 whichguides the carriage laterally, by sliding against vertical structural members or tracks 17.
  • the slide members 7 are held in position by means of countersunk cylinder bolts or screws 8, and also prevent the tional force could be exerted on the slide members 7 by frictional contact with the end face of the rotating rollers 9, such a rotational.
  • the slide members 7 arc also secured in position relative to the shafts of the rollers 9 by securing means such as one or more offset pins 10 or the like members engaged in the slide members 7 and associated shafts.
  • the slide members 7 are, for example, circular and are mounted coaxially to the rollers 9.
  • the FIG. 2 arrangement has the advantage that the lifting carriage with its guide means is of less structural height than previously proposed constructions in which the rollers and slide members are arranged one above the other.
  • a carrier member 11 which is secured to the lifting carriage and which pivotally carries support arms with support plate members 12 for carrying a vehicle to be lifted, is extended beyond the width of a base'frame member 13 at the foot of the vertical column.
  • the pivotal connections between carrier member 11 andthe support arms thus lie outside the member 13, so that the support arms can be'lowered to a position in which they are almost flush with the road way surface on which the lifting platform is standing.
  • FIGS. 5 and 6 show the construction of the lifting nut which cooperates with the lifting spindle 3 of FIG. 1, rotation of the spindle moving the nut, and therewith the carriage 20 in which the nut is carried, in a vertical direction.
  • a flanged sleeve comprising bearing metal and having an internal thread mating with the thread of the lifting spindle ispressed into a stepped bore in a steel sleeve 14 which is secured in .the lifting carriage.
  • the weight of the carriage and any .load thereon will tend to force the flanged sleeve 15 into the steel sleeve 14, the flanged portion of the sleeve 15 bearing the weight on its upward surface, as is clearly shown in FIG. 6.
  • One or more securing members such as a pin 16 or like member prevent relative rotational movement between the two sleeves 14 and 15.
  • the nut thus enjoys a high tensile strength, by virtue of the steel sleeve 14, while the cost of the nut is reduced relative to a nut made entirely of bearing metal, as the dimensions of the inner sleeve 15 can be kept to a minimum compatible with safe reliable operation.
  • a two-column lifting platform for lifting a motor vehicle comprising:
  • tubular sleeve above said flange thereof being annularly spaced radially inwardly from the periphery of said opening to define between the periphery of said opening and the exterior of said tubular sleeve, above said flange thereof, a
  • a lifting platform according to claim 1 wherein the means for guiding the carriage comprises at least two overhung shafts on the lifting carriage, each of the. shafts carrying a guide roller and having a slide member secured to the end face of the shaft, the rollers and the slide members guidingly locating the lifting carriage respectively intwo horizontal directions perpendicular to each other.
  • each slide member is connected to the associated shaft by a screw connection, at least one additionalsecuring member being provided to prevent the slide memberrotating relative to the respective shaft.
  • a lifting platform further comprising a base frame member physically interconnecting the two columns at. the foot of each column wherein the lifting carriage carries a carrier member to which vehicle support arms are pivotally connected, the carrier-member being extended so that the arm pivotal connections-lie outside the width of the base frame member at the feet of the columns.
  • means connecting the rotatable spindle to the lifting carriage comprises a lifting nut which cooperates with the spindle to move the lifting carriage vertically, the lifting nut comprising a steel sleeve and a flanged sleeve which is pressed into the steel sleeve and which is made of bearing metal, the flanged sleeve having means defining internal threading cooperating with means defining external threading on the spindle.
  • a lifting platform according to claim 7 wherein a securing pin. engages into the steel sleeve and the flange sleeve, to prevent relative rotation therebetween.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Handcart (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Rolling Contact Bearings (AREA)
US00191878A 1970-10-28 1971-10-22 Two column lifting platform Expired - Lifetime US3722627A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702052869 DE2052869A1 (de) 1970-10-28 1970-10-28 Zweisäulenhebebühne

Publications (1)

Publication Number Publication Date
US3722627A true US3722627A (en) 1973-03-27

Family

ID=5786367

Family Applications (1)

Application Number Title Priority Date Filing Date
US00191878A Expired - Lifetime US3722627A (en) 1970-10-28 1971-10-22 Two column lifting platform

Country Status (5)

Country Link
US (1) US3722627A (enrdf_load_stackoverflow)
DE (1) DE2052869A1 (enrdf_load_stackoverflow)
ES (1) ES394726A1 (enrdf_load_stackoverflow)
FR (1) FR2111899B3 (enrdf_load_stackoverflow)
GB (1) GB1303915A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056170A (en) * 1990-04-18 1991-10-15 Manfred Kronshagen Lifting device, particularly for beds
US5318154A (en) * 1992-06-16 1994-06-07 Hellman Jr Robert R Column for load lifting devices
US10106378B2 (en) 2015-11-03 2018-10-23 General Electric Company System and method for lifting with load moving machine
EP3757057A1 (de) * 2019-06-25 2020-12-30 MAHA Maschinenbau Haldenwang GmbH & Co. KG Hebebühne und tragsäule einer hebebühne

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112158757B (zh) * 2020-08-27 2022-03-01 南京驭逡通信科技有限公司 一种工业控制系统下的升降调节装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056170A (en) * 1990-04-18 1991-10-15 Manfred Kronshagen Lifting device, particularly for beds
US5318154A (en) * 1992-06-16 1994-06-07 Hellman Jr Robert R Column for load lifting devices
US10106378B2 (en) 2015-11-03 2018-10-23 General Electric Company System and method for lifting with load moving machine
EP3757057A1 (de) * 2019-06-25 2020-12-30 MAHA Maschinenbau Haldenwang GmbH & Co. KG Hebebühne und tragsäule einer hebebühne

Also Published As

Publication number Publication date
FR2111899B3 (enrdf_load_stackoverflow) 1974-06-07
GB1303915A (enrdf_load_stackoverflow) 1973-01-24
FR2111899A3 (enrdf_load_stackoverflow) 1972-06-09
ES394726A1 (es) 1974-02-16
DE2052869A1 (de) 1972-05-10

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