US3682289A - Apparatus for guiding a conveyor - Google Patents

Apparatus for guiding a conveyor Download PDF

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Publication number
US3682289A
US3682289A US91960A US3682289DA US3682289A US 3682289 A US3682289 A US 3682289A US 91960 A US91960 A US 91960A US 3682289D A US3682289D A US 3682289DA US 3682289 A US3682289 A US 3682289A
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United States
Prior art keywords
skirts
steps
stairway
endless belt
rollers
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
US91960A
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English (en)
Inventor
Joseph K Kraft
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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
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Publication of US3682289A publication Critical patent/US3682289A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B23/00—Component parts of escalators or moving walkways
    • B66B23/14—Guiding means for carrying surfaces
    • B66B23/147—End portions, i.e. means for changing the direction of the carrying surface

Definitions

  • the conventional manner of laterally guiding the steps has other drawbacks. Since the step and the skirts forming the vertical walls adjacent the steps are not directly related to each other, objects have been known to be drawn into the gap between the skirts and the step despite the close running clearances required by code.
  • the skirt is deflected by the trapped object through the wedging action of the relative movement between the step and the skirt.
  • the step is deflected from the skirt as the running clearance between the side of the main roller and the track is taken up.
  • 2,813,613 discloses the use of castered wheels mounted on either side of the step frames which bear outward against the skirts to standardize the clearance between the skirt and the steps. No effort was made in any of these prior art patents to positively clamp the lateral positioning of the steps with respect to the skirts.
  • the endless belt of the conveyor is guided laterally directly from the back side of the skirts forming the vertical walls along the edges of the endless belt.
  • the linkages between the endless belt and the skirts are spaced at frequent intervals and are kept relatively short to preclude objects from wedging between the skirt and the endless belt and being drawn into the gap as the components deflect.
  • rollers As applied to a moving stairway, guides protruding under the skirts on either side of each step, support rollers which bear against the back sides of the skirts. With the rollers preferably mounted on rigid linkages pivotally connected to the step axles, the rollers will follow the curvature of the step path without the necessity of swivel mountings. Tracks against which the guide rollers bear on the return run provide lateral guidance for the steps on this run.
  • FIG. 1 discloses a side elevation view with parts in section and parts broken away of a moving stairway incorporating the invention
  • FIG. 2 illustrates a sectional view taken transverse to the direction of movement of the stairway along the line II-II in FIG. 1;
  • FIG. 3 is a plan view with parts in section and parts broken away of a portion of the moving stairway taken along the line III-III in FIG. 2;
  • FIG. 4 is a schematic view of a moving stairway
  • FIG. 5 is a simplified elevation view with parts broken away and parts missing of the lower terminal of a moving stairway incorporating the invention.
  • the moving stairway is made up of a plurality of steps identified by the general reference character 1.
  • Each step unit is made up of two vertically oriented generally triangular shaped frame members 3, one on either side of the step unit, a tread plate 5 upon which the passengers are carried and a riser 7.
  • the tread plate 5 and the riser 7 are cleated.
  • Each step is pivoted for rotational movement about a step axle 9 passing through the frame members 3.
  • the steps are joumaled to the axles in a manner which prevents axial movement between the step and the axles.
  • Main rollers l l rotationally mounted to each end of the step axles ride in C-shaped tracks 13 on both the upper load bearing run 15 and the return run 17 of the stairway.
  • Journaled to the step frames 3 adjacent the bottom of the risers 7 are trailer wheels 19 which are guided by L-shaped trailer tracks 21 on both the upper run 15 and the return run 17.
  • the individual steps are interconnected to form an articulated endless belt by rigid linkages 23 pivotally connected to the step axles on either side of the steps.
  • the linkages 23 are constructed of laminations of steel stampings having projections 25 which form teeth.
  • the linkages have male and female connectors on opposite ends so that they cooperate with adjacent linkages to form a continuous rack.
  • Drive units which are spaced at intervals along the length of the stairway mesh with the rack teeth on both the upper and return run to impart a driving force to the stairway.
  • the drive units and the rack assemblies are more fully described in the copending application Ser. No. 91,959 filed Nov. 23, 1970, of this inventor and Henry Boltrek assigned to the same assignee as this application.
  • Guide rollers 27 are mounted on the linkages 23 for rotation about an axis transverse to the longitudinal axis of the linkages. On the upper run 15, the guide rollers 27 roll against extruded skirt guides 29 as the stairs move either upward or downward.
  • the skirt guides 29 are connected to the bottom of the skirts 31 which form a substantially vertical wall along either side of the stairway.
  • the upper ends of the skirts are connected to extruded balustrade supports 33 which run along the upper edge of the skirts.
  • the skirt guides and the balustrade supports 33 are supported by flanges 35 on brackets 37.
  • the skirt guides 29 and the balustrade supports 33 are clamped in place by retainer plates 39 which are boltedto the flanges 35 on the brackets 37.
  • the balustrade supports 33 give continuous support to the balustrades 41.
  • the brackets 37 are welded to the truss cord members 43.
  • the brackets 37 have horizontal flanges 45 which support the return guides 47 for the hand rails 49..I'he' upper runs of the hand rails (not shown) are connected to the top of the balustrades where they are available to give support to passengers on the stairway.
  • the guide rollers 27 bear against the vertical legs of the L-shaped lateral guides 51 to positively impart lateral guidance to the steps on the return run.
  • the C-shaped tracks 13 for the main rollers, the L- shaped tracks 21 for the trailer rollers and the lateral guides 51 are all precision welded to mounting plates 53 on their respective sides of the stairway.
  • the mounting plates 53 in tum are welded to'the truss chord members 43.
  • the truss chord members are welded to the lower truss beam members 55 at their lower extremity and at their upper extremity to upper truss beams (not shown).
  • Other truss chord members (not shown) are located at intervals of four feet along the length of the stairway.
  • Diagonal truss members (not shown) give added strength to the supporting truss structure.
  • the two sides of the truss structure are rigidly connected by the boxing members 57 which are welded to the mounting plates 53.
  • FIG. 5 illustrates, in partially schematic form, the essential relationship of the parts as the steps negotiate the radii of the lower terminal.
  • the main rollers and trailer rollers of the steps take divergent paths as the lower terminal is approached so that the steps may be brought into platform relationship for passengers leaving the stairway on a downward traveling stairway or for entering the stairway on an upward traveling stairway. It can be seen from FIG.
  • the guiderollers 27 will roll along the curved'sections of the skirt guides 29 on the upper run and the lateral guides 51 on the return run.
  • the guides for the guide rollers 27 have been shown as being terminated short of the reversing curve, they could form a continuous guide- A similar turn around is provided at the upper terminal 59.
  • a moving stairway comprising:
  • a supporting structure for supporting said endless belt for an upper load bearing run and a lower return run
  • first and second skirts fastened to the supporting structure in spaced relation to form essentially vertical walls along the edges of the load bearing run of the endless belt;
  • guide means extending laterally at spaced intervals from said endless belt, on predetermined sides of each of said first and second skirts which are opposite the step sides of the skirts, said guide means including guide rollers mounted for rotation against the predetermined sides of said first and second skirts;
  • the endless belt and the first and second skirts are directly coupled together at spaced intervals to provide a positive lateral guide for the endless belt along the load bearing run, and to preclude objects from spreading the skirts away from stairway steps and from becoming wedged between the skirts and the steps by relative movement between them.
  • the endless belt comprises a series of rigid linkages, a plurality of transverse axles for pivotally connecting said linkages and upon which the stairway steps are pivotally mounted, and main rollers on each end of each axle for supporting said linkages,
  • main rollers are mounted for rotation in a vertical plane parallel to the direction of movement of the endless belt
  • first set of tracks guide the main rollers for vertical positioning on the return run as well as in the load bearing run;
  • skirt means extending vertically downward from the supporting structure on either side of the steps between the steps and the flexible endless units forming essentially vertical walls along the edges of the steps; and guide means connected to a plurality of correspond- 5 ing linkages in each of said flexible endless units, said guide means bearing against the adjacent skirt, on the side of the skirt opposite to the step side;

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  • Escalators And Moving Walkways (AREA)
US91960A 1970-11-23 1970-11-23 Apparatus for guiding a conveyor Expired - Lifetime US3682289A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9196070A 1970-11-23 1970-11-23

Publications (1)

Publication Number Publication Date
US3682289A true US3682289A (en) 1972-08-08

Family

ID=22230500

Family Applications (1)

Application Number Title Priority Date Filing Date
US91960A Expired - Lifetime US3682289A (en) 1970-11-23 1970-11-23 Apparatus for guiding a conveyor

Country Status (6)

Country Link
US (1) US3682289A (fr)
BE (1) BE775636A (fr)
BR (1) BR7107224D0 (fr)
FR (1) FR2115857A5 (fr)
GB (1) GB1362016A (fr)
IT (1) IT940749B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064986A (en) * 1976-04-30 1977-12-27 Westinghouse Electric Corporation Escalator having guide wheels and guide track with cooperative non-flat surfaces
US4232783A (en) * 1979-03-19 1980-11-11 Westinghouse Electric Corp. Step link for transportation apparatus
US4249649A (en) * 1979-02-22 1981-02-10 Westinghouse Electric Corp. Escalator having yieldable primary and non-yieldable secondary transverse guide points on one side thereof
US5161668A (en) * 1991-07-18 1992-11-10 Montgomery Electric Company Guide mechanism for passenger conveyors
EP1236672A1 (fr) * 2000-11-06 2002-09-04 Thyssen Fahrtreppen GmbH Balustrade pour escalier ou trottoir roulant
US20060054458A1 (en) * 2002-12-13 2006-03-16 Otis Elecator Company Stepchain link for an escalator
US20120073934A1 (en) * 2010-09-24 2012-03-29 Gerd Heinemann Conveying equipment for persons
DE10156991B4 (de) * 2000-11-28 2013-11-14 Otis Elevator Co. Kettensegment für Personenbeförderer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2813613A (en) * 1954-03-22 1957-11-19 Otis Elevator Co Moving stairways

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR319726A (fr) * 1902-03-18 1902-11-21 Aston Perfectionnements dans les chaines de commande des élévateurs continus
US2231709A (en) * 1940-06-18 1941-02-11 Westinghouse Elec Elevator Co Moving stairway
US2535501A (en) * 1948-10-06 1950-12-26 Robert F Loughridge Escalator step tread and guide
GB768304A (en) * 1954-03-22 1957-02-13 Otis Elevator Co Moving stairways

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2813613A (en) * 1954-03-22 1957-11-19 Otis Elevator Co Moving stairways

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064986A (en) * 1976-04-30 1977-12-27 Westinghouse Electric Corporation Escalator having guide wheels and guide track with cooperative non-flat surfaces
US4249649A (en) * 1979-02-22 1981-02-10 Westinghouse Electric Corp. Escalator having yieldable primary and non-yieldable secondary transverse guide points on one side thereof
US4232783A (en) * 1979-03-19 1980-11-11 Westinghouse Electric Corp. Step link for transportation apparatus
US5161668A (en) * 1991-07-18 1992-11-10 Montgomery Electric Company Guide mechanism for passenger conveyors
EP1236672A1 (fr) * 2000-11-06 2002-09-04 Thyssen Fahrtreppen GmbH Balustrade pour escalier ou trottoir roulant
DE10156991B4 (de) * 2000-11-28 2013-11-14 Otis Elevator Co. Kettensegment für Personenbeförderer
US20060054458A1 (en) * 2002-12-13 2006-03-16 Otis Elecator Company Stepchain link for an escalator
US20120073934A1 (en) * 2010-09-24 2012-03-29 Gerd Heinemann Conveying equipment for persons
US8919527B2 (en) * 2010-09-24 2014-12-30 Inventio Ag Conveying equipment for persons

Also Published As

Publication number Publication date
GB1362016A (en) 1974-07-30
FR2115857A5 (fr) 1972-07-07
IT940749B (it) 1973-02-20
BR7107224D0 (pt) 1973-04-17
BE775636A (fr) 1972-05-23

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