US3390798A - Industrial lift trucks - Google Patents

Industrial lift trucks Download PDF

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Publication number
US3390798A
US3390798A US554368A US55436866A US3390798A US 3390798 A US3390798 A US 3390798A US 554368 A US554368 A US 554368A US 55436866 A US55436866 A US 55436866A US 3390798 A US3390798 A US 3390798A
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US
United States
Prior art keywords
carriage
reach
reach carriage
section
links
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
US554368A
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English (en)
Inventor
Dixon John David
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.)
Linde Material Handling UK Ltd
Original Assignee
Lansing Bagnall Ltd
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 Lansing Bagnall Ltd filed Critical Lansing Bagnall Ltd
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Publication of US3390798A publication Critical patent/US3390798A/en
Anticipated expiration legal-status Critical
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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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/122—Platforms; Forks; Other load supporting or gripping members longitudinally movable
    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/147—Whole unit including fork support moves relative to mast

Definitions

  • An industrial lift truck has a load-lifting carriage, a reach carriage formed in two parts, one part being supported and guided for reach movement by the load-lifting carriage and the other part having load carrying means, which parts are connected together by a scissorslike coupling, and driving meanswhich are capable of both advancing and retracting the said part of the reach carriage which'is guided for 'reach movernent by the'loadlifting carriage and also of expanding and contracting the said coupling.
  • This invention relates to industrial lift trucks.
  • an industrial lift truck is provided with a load-lifting carriage, a reach carriage connected to thelload-li fting carriage, guide means for the reach carriage, means for advancing and retracting the reach carriage along the guide means which advancing and retracting means comprise a driving member with a driving connection to the reach carriagewhich member moves (e.g. at a substantially constant. speed) along a path which is mainly parallel to. the direction'of movement of the reach carriage along the guide means and which path at one, or each en d thereof turns away from the parallel portion whereby the rate of movement of the member in said'direction is reduced when the member reaches said end and the rate of movement of the reach carriage is reduced.
  • the truck is provided 'with an upstanding mast, a horizontally extending bracket constituting the load-lifting carriage which bracket is carried on the mast and from which depends the reach carriage, means for effecting relative movement between the mast and the bracket, and a turntable mechanism mounted on the bracket so as-to be able to effect rotation of the reach carriage,
  • the reach carriage is formed in two parts connected together by a scissors-like coupling and that one of said parts is provided with load carrying means, the parts of the reach carriage being movable independently of each other by expansion or contraction of the said coupling.
  • the driving member is preferable in driving connection with the part of the reach carriage which is provided with the load carrying means.
  • the driving member may be a link.
  • the said advancing and retracting means comprise an endless chain or belt which passes around two pulleys or sprockets positioned at either end of the guide means for the reach carriage, which chain or belt carries the driving member.
  • the driving member is capable of being directed a partway around one of the pulleys by the chain or belt to turn it away from the parallel portion of its path.
  • Stop means are preferably provided to stop the advancing and retracting means when the rate of movement of the driving member has been reduced by the required amount.
  • FIGURE 1 is a front perspective view of the truck
  • FIGURE 2 is a rear perspective view of the reach carriage of the truck shown in FIGURE 1; i
  • FIGURE 3 is an elevation, partly cut-away, of the means for advancing and retracting the reach carriage of the truck shown in FIGURES l and 2, the figure showing the two extreme positions of the driving member in driving connection between the said means and the reach carriage; and e FIGURE 4 is a plan view of the means shown in FIG- URE 3.
  • the truck comprises a heavy body 10 with two wheels 11 at the front corners on fixed axes and two steering and propelling wheels 12 at theback, and an appropriate driving mechanism 13 over the back wheels 12 with a space 14 between the steering and driving mechanism and the front end of the body 10.
  • a fixed or outer mast 15 and on the outer mast there is a rising or inner mast 16.
  • Running in this rising mast 16 there is a horizontal and forwardly projecting load lifting carriage or bracket 17.
  • Each of the masts 15, 16 is formed of two upright guide members in parallel spaced-apart relation in known manner and the space between the two sides of the masts is unobstructed so that the forwardly projecting bracket 17 can run up and down freely.
  • a jack 25 is provided for effecting this raising and lowering of the bracket 17 and of the inner mast 16, which jack 25 is provided behind the guide members of the outer mast 15, i.e. in the space 14 between the outer mast 15 and the driving mechanism 13 of the truck.
  • This turntable mounting 19 comprises a gear wheel mechanism and is driven by an electric motor 20 through a wormreduction gear 21.
  • the guides extend in both directions from the turntable mounting 19 for a short distance and are made of as great a length as will clear the mast on rotation of the turntable mechanism, the length of the guides 22, 23 being determined by the .amount of overhang of the-bracket 17.
  • each coupling (see FIGURE 2) comprises a first link 37 extending between the two parts 28, 29 and a second link 38 extending between the shaft 36 and the part 28.
  • each part 28, 29 of the reach carriage may be moved independently of the other part by expansion or contraction of the couplings 34, 35.
  • the provision of the guides 39, 40, also allows the couplings 34, 35 to expand or con tract without necessitating a corresponding amount of expansion or contraction of the two parts of the reach carriage.
  • the mechanisms for moving the reach carriage 18 comprises a pair of endless chains 43, 44 extending be- Patented July 2, 1968 the guide channels 22, 23, the sprockets 45 being driven by an electric motor 47 through a'reduction gear box 48.
  • a driving member 49 which, in'this example, is a rigid arcuate link designed to travel in fixed relation with the part 29 of the reach carriage and in a path parallel to that of the part 29 until the reach carriage approaches either its fully advanced position (shown in chain lines) or itsfully retracted position (shown in full lines).
  • the end of the link 49 which is attached to one of the endless chains 43, 44 will be located such that it will begin to pass around one of the sprockets 45, 46 i.e. follow the path of the chain which turns the link away from the path of the reach carriage.
  • This effect will cause the rate of movement of the link 49 and hence the reach carriage in the direction of movement of the carriage to be reduced, which reduced rate of movement will be steadily increased until a stop mechanism operates to stop the motor 47 driving the chains 43, 44 and hence to stop the movement of the link 49.
  • This stop mechanism comprises for each direction of traverse of the chains 43, 44, a horizontal projection 50 fixed to the respective chain and which is capable of deflecting a lever 51 against spring pressure thereby allowing the plunger 52 of a limit switch 53 to move longitudinally a sufficient extent to change the state of the switch.
  • the stop 50 on the chain 44 is located a short distance ahead of the link 49 and is operative at the position of the link which is associated Wtih the fully retracted position of the reach carriage.
  • the stop 50 on the chain 43 is located a further distance ahead of the corresponding link 49 and is operative at the position of the link which is associated with the fully advanced position of the reach carriage.
  • the motors 20 and 47 are controlled by hand levers rotated on top of the driving mechanism 13 within easy reach of the operator, so he can control the rotating and reaching movements of the reach carriage 18 at positions intermediate the limits of their movement.
  • An industrial lift truck having a load-lifting carriage, a reach carriage connected to the load-lifting carriage, which reach carriage is formed in two parts, one part being supported by the load-lilting carriage and the other part having 105a carrying means, and which parts are connected together by a scissors-like coupling, the
  • ans of the reach carriage being movable independently of each other by expansion and contraction of the said coupling, guide means provided by the load-lifting carriage for guiding the reach movement of the said one part of the reach carriage, and driving means which are capable of both advancing and retracting the said one part of the reach carriage along the guide means and also of expanding and contracting the said coupling between the two parts of the reach carriage, which driving means comprise an endless member extending between and around two fixed points positioned one at either end of the said guide means for the said one part of the reach carriage and a driving link pivotally connected at one end to the said endless member and at its other end to the said other part of the reach carriage.
  • a truck as claimed in claim 1 in which the said endless meniber is anendless chain which passes between and around two sprockets positioned one at either end of the guide means for the'said one part of the reach carriage, the path of the chain between the sprockets being parallel to the direction of movement of the reach carriage,and in which the driving link is capable of being carried by the chain a part way around each of the sprockets whereby during said passage of the link around a part of each of the sprockets, the speed of the link in the direction of movement of the reach carriage, and hence the speed of the reach carriage, is reduced.
  • a truck as claimed in claim 2 in which stop means are provided to stop the said chain when the driving link has moved the required distance around the respective sprocket.
  • a truck as claimed in claim 1 in which the truck is provided with an upstanding mast, a horizontally extending bracket constituting the load-lifting carriage which bracket is carried on the mast and from which depends the said one part of the reach carriage, means for ef fecting relative movement of the bracket up and down the mast, and a turntable mechanism mounted on the bracket so as to be able to eflFect rotation of both parts of the reach carriage as a unit.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Handcart (AREA)
US554368A 1965-06-03 1966-06-01 Industrial lift trucks Expired - Lifetime US3390798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23769/65A GB1100477A (en) 1965-06-03 1965-06-03 Improvements in or relating to industrial lift trucks

Publications (1)

Publication Number Publication Date
US3390798A true US3390798A (en) 1968-07-02

Family

ID=10201025

Family Applications (1)

Application Number Title Priority Date Filing Date
US554368A Expired - Lifetime US3390798A (en) 1965-06-03 1966-06-01 Industrial lift trucks

Country Status (9)

Country Link
US (1) US3390798A (enrdf_load_stackoverflow)
AT (1) AT272951B (enrdf_load_stackoverflow)
BE (1) BE681981A (enrdf_load_stackoverflow)
CH (1) CH451814A (enrdf_load_stackoverflow)
DE (1) DE1295480B (enrdf_load_stackoverflow)
GB (1) GB1100477A (enrdf_load_stackoverflow)
NL (2) NL6607655A (enrdf_load_stackoverflow)
NO (1) NO137118C (enrdf_load_stackoverflow)
SE (1) SE305181B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3585938A (en) * 1969-01-31 1971-06-22 Reading Co Automatic journal box lid operator
US3599818A (en) * 1969-08-13 1971-08-17 George E Stanton Load support attachment for vertical lift trucks providing horizontal and rotational displacement of a load
US3762588A (en) * 1970-10-05 1973-10-02 Clark Equipment Co Front and lateral loading mechanism
US3998345A (en) * 1974-04-05 1976-12-21 Missouri Research Laboratories, Inc. Side loader for fork lift trucks
US4527943A (en) * 1983-05-11 1985-07-09 The Raymond Corporation Load handling method and apparatus

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5038860B1 (enrdf_load_stackoverflow) * 1970-06-06 1975-12-12
DE2545010C3 (de) * 1975-10-08 1983-11-03 Mannesmann AG, 4000 Düsseldorf Verschiebeantrieb für einen ins Regalfach einfahrbaren Träger auf dem Hubschlitten eines Regalförderzeuges
FR2458503A1 (fr) * 1979-06-12 1981-01-02 Potain Sa Appareil de manutention pour l'equipement, la finition et la renovation des immeubles
DE3017456C2 (de) * 1980-05-07 1986-08-28 Jungheinrich Unternehmensverwaltung Kg, 2000 Hamburg Frei verfahrbarer Hochregalstapler
CN110817746A (zh) * 2019-12-13 2020-02-21 吉林大学 一种多角度高空安装运输装置
CN112062049B (zh) * 2020-08-27 2022-02-11 广东博智林机器人有限公司 一种叉取装置的顶板机构、叉取装置及搬运设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2652162A (en) * 1946-08-07 1953-09-15 Auger Harold Power transmission mechanism in storage equipment
US2709017A (en) * 1951-09-05 1955-05-24 Yale & Towne Mfg Co Side loader attachment for industrial lift trucks
US3190473A (en) * 1963-05-15 1965-06-22 Steinbock Gmbh Side-loading truck with an eccentrically mounted load handling mechanism
US3202242A (en) * 1962-04-13 1965-08-24 Lansing Bagnall Ltd Industrial truck with an elevatable operator platform that is movable with and relative to the load handling means

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE952429C (de) 1952-02-10 1956-11-15 Hans Still Ag Lasttraeger fuer stapelnde Foerdergeraet
US2752058A (en) * 1953-07-22 1956-06-26 Raymond Corp Material handling lift truck
DE1000287B (de) 1954-01-07 1957-01-03 Steinbock G M B H Stapler
CH317235A (de) * 1955-01-18 1956-11-15 Sig Schweiz Industrieges Stapelfahrzeug mit schwenkbarem Huborgan
DE1026688B (de) 1956-05-26 1958-03-20 Steinbock G M B H Stapler, insbesondere Gabel- oder Schienenstapler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2652162A (en) * 1946-08-07 1953-09-15 Auger Harold Power transmission mechanism in storage equipment
US2709017A (en) * 1951-09-05 1955-05-24 Yale & Towne Mfg Co Side loader attachment for industrial lift trucks
US3202242A (en) * 1962-04-13 1965-08-24 Lansing Bagnall Ltd Industrial truck with an elevatable operator platform that is movable with and relative to the load handling means
US3190473A (en) * 1963-05-15 1965-06-22 Steinbock Gmbh Side-loading truck with an eccentrically mounted load handling mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3585938A (en) * 1969-01-31 1971-06-22 Reading Co Automatic journal box lid operator
US3599818A (en) * 1969-08-13 1971-08-17 George E Stanton Load support attachment for vertical lift trucks providing horizontal and rotational displacement of a load
US3762588A (en) * 1970-10-05 1973-10-02 Clark Equipment Co Front and lateral loading mechanism
US3998345A (en) * 1974-04-05 1976-12-21 Missouri Research Laboratories, Inc. Side loader for fork lift trucks
US4527943A (en) * 1983-05-11 1985-07-09 The Raymond Corporation Load handling method and apparatus

Also Published As

Publication number Publication date
NL132078C (enrdf_load_stackoverflow)
NO137118B (no) 1977-09-26
NO137118C (no) 1978-01-04
CH451814A (de) 1968-05-15
NL6607655A (enrdf_load_stackoverflow) 1966-12-05
AT272951B (de) 1969-07-25
BE681981A (enrdf_load_stackoverflow) 1966-11-14
SE305181B (enrdf_load_stackoverflow) 1968-10-14
DE1295480B (de) 1969-05-14
GB1100477A (en) 1968-01-24

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