US3729215A - Coupling device for a dray - Google Patents

Coupling device for a dray Download PDF

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Publication number
US3729215A
US3729215A US00200032A US3729215DA US3729215A US 3729215 A US3729215 A US 3729215A US 00200032 A US00200032 A US 00200032A US 3729215D A US3729215D A US 3729215DA US 3729215 A US3729215 A US 3729215A
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US
United States
Prior art keywords
coupling
gooseneck
dray
pocket
side walls
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
US00200032A
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English (en)
Inventor
I Paakkinen
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Stora Enso Oyj
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Enso Gutzeit Oy
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Filing date
Publication date
Application filed by Enso Gutzeit Oy filed Critical Enso Gutzeit Oy
Application granted granted Critical
Publication of US3729215A publication Critical patent/US3729215A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D53/00—Tractor-trailer combinations; Road trains
    • B62D53/04—Tractor-trailer combinations; Road trains comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle
    • B62D53/06—Semi-trailers
    • B62D53/061—Semi-trailers of flat bed or low loader type or fitted with swan necks
    • B62D53/062—Semi-trailers of flat bed or low loader type or fitted with swan necks having inclinable, lowerable platforms; Lift bed trailers; Straddle trailers
    • B62D53/065—Semi-trailers of flat bed or low loader type or fitted with swan necks having inclinable, lowerable platforms; Lift bed trailers; Straddle trailers inclining platforms by detachable or folding swan necks

Definitions

  • ABSTRACT In a coupling device for a dray, a device with which one end of the dray can be lifted to rest against the pulling vehicle and which consists of a coupling part of a gooseneck attached to a pulling vehicle at one end and a coupling pocket in the dray meant to receive the gooseneck.
  • the side walls of the gooseneck coupling part and the coupling pocket deviate from the vertical plane and are dimensioned so that, when lifted the slanted side walls of the coupling part of the gooseneck are wedged between the slanted side walls of the Coupling pocket so that a pulling coupling is created between the dray and the pulling vehicle.
  • the invention relates to a coupling device for coupling a dray to a pulling vehicle provided with a gooseneck with which the dray is lifted into the driving position.
  • a coupling device is. known from U.S. Pat. No. 2,389,21 I, in which a couplinghook is brought-into a rectangular notch corresponding to the shape of the hook.
  • the notch and the book are approximately of the same width, for which reason it is difficult to push the hook in unless the pulling car is in perfect alignment with the longitudinal axis of the coupling noth.
  • the hook is fastened with special locking gears, which lock the hook into the coupling noth, and naturally, also, to the chassis of the pulling vehicle in the pulling direction.
  • German patent l 297 999 introduces -a coupling pocket which has a supporting surface in its upper part in the front and in its lower part in the back. Slanted adjustment surfaces run from the side walls of the coupling pocket toward the frontmost supporting surface, their purpose being to guide the gooseneck of the pulling vehicle to the center of the coupling pocket.
  • the gooseneck of the pulling vehicle can thus be pushed into the coupling pocket in a bevel position in relation to the dray. After this, the lockingprocedur'e of the gooseneck is completed with, clamps in the pulling direction.
  • Both side walls of the interlockable parts are slanted so that the side walls of the projection are wedged between the side walls of the coupling pocket.
  • the coupling device may consist of a coupling pocket in the dray and a gooseneck which fits into the pocket.
  • a very good lateral stability of the dray is obtained in the'driving position.
  • This is accomplished according to the invention by shaping the cross sections of the gooseneck of the pulling vehicle and the coupling pocket so thattheslanted side walls of the goosenecklean against the slanted side walls of the coupling pocket.
  • the supporting surfaces are the slanted side walls of the coupling pocket. In this way the gooseneck of the pulling vehicle stays firmly and centrally in place in the coupling pocket.
  • the gooseneck can be guided with even greater precision and fastened even more firmly, if the back part of the gooseneck and respectively the back part of the coupling pocket are provided with slanted side walls which converge downward, that is,"in a direction opposite to the converging of the front part of the gooseneck and the front part of the coupling pocket.
  • the angle formed by these side walls and the vertical plane is l0-50, such a great frictional force is created at the points of contact between the gooseneck and the side walls, that no locking between the gooseneck and the'coupling pocket isnecessary.
  • the slanted supporting surfaces being relatively wide compared with the dimensionsof the cross section of the gooseneck, the'gooseneck is very firmly guided by them during the driving so that the coupling device receives torsional moments which twist the vehicle combination about its longitudinal axis, and the front end of the dray is supported by the chassis and the wheels of the pulling-vehicle.
  • the dray cannot move in the lateral direction. Nevertheless, it is easy to uncouple and couple the dray because there are no locking pieces or thresholds.
  • FIG. 1 is a side view of a pulling vehicle and a dray uncoupled, I
  • FIG. 2 shows a pulling vehicle and a dray seen from the top
  • FIG. 3 is a side view of a pulling vehicle gooseneck according to the invention.
  • FIG. 3a shows a cross section of the gooseneck along line A--A in FIG. 3, or at the first supporting surface
  • FIG. 4 is a side view of the coupling pocket of the dray
  • FIG. 5 is a side view of the coupling of the gooseneck into the coupling pocket
  • FIG. 5a shows a cross section of the front parts of the gooseneck and the coupling pocket along line BB in FIG. 5, and
  • F IG. 5b shows a cross section of the back parts of the gooseneck and the coupling pocket along line CC in FIG. 5,
  • FIG. 6 is a side view of a gooseneck according to another application of the invention.
  • FIG. 6a shows a cross section of thefront part of the gooseneck along line AA in FIG. 6,
  • FIG. 6b shows a cross section of the back part of the gooseneck along line BB in FIG. 6, or at the hindmost supporting surface.
  • FIG. 7 shows a dray coupling pocket to which is coupled a gooseneck according to the second example of the invention
  • FIG. 8 is'a side view of the fittingof a gooseneckaccording to FIG. 6 into a coupling pocket according to FIG.'7,
  • FIG. 8a shows a cross section of thefront parts of the gooseneck and the coupling pockets along line CC in FIG. 8,
  • FIG. 8b shows a cross cut of the back parts of the gooseneck and the coupling pocket along line DD in FIG. 8.
  • FIG. 1, 1 refers to the gooseneck of the pulling vehicle and 2 to the gooseneck coupling part, which is pushed into coupling pocket 4 of dray 3, when the pulling vehicle is coupled to the dray.
  • the mouth of coupling pocket 4 is somewhat wider than its back part, which makes it possible to couple the pulling vehicle to the dray even when the pulling vehicle and the dray are not in perfect alignment.
  • the back end of gooseneck coupling part 2 is narrower than its front part.
  • lower surface 10' of gooseneck coupling part 2 is slanted upward to facilitate the fitting of gooseneck 2 into the coupling pocket.
  • FIG. 3a Respectively, lower surface 7 of coupling pocket 4 is slanted upward.
  • the cross section of gooseneck 2 is approximately triangular as shown in FIG. 3a so that lower surface 10 of the gooseneck is wider than its upper surface 9.
  • the slanted side walls may form an angle of l-45 with the vertical plane.
  • the cross section of coupling pocket 4 is also triangular.
  • gooseneck 2 When dray 3 is coupled to the pulling vehicle, gooseneck 2 is pushed into coupling pocket 4, which is easy even when the pulling vehicle and the dray are not in perfect alignment, since the mouth of the coupling pocket is somewhat wider than its back part. Thanks to slanted lower surface 10 of gooseneck 2, gooseneck 2 slides easily into coupling pocket 4 into the position shown in FIG. 5. When dray 3 is lifted into the driving position, gooseneck 2 is lifted somewhat, at which time slanted sides walls 6 of gooseneck 2 are wedged very easily into the space formed by slanted side walls 15 of coupling pocket 4 (FIG. a), and the dray moves sideways. so that its center line is directed toward the joint of the gooseneck in the pulling vehicle. As shown in FIG.
  • FIG. 6 A coupling device according to another application of the invention is shown in FIG. 6.
  • gooseneck 2 also has slanted lower surface 10 to facilitate pushing the gooseneck in.
  • the cross section of gooseneck 2 changes at point 1 1 so that back part l2 of gooseneck 2 converges downward as shown in FIGS. 6a and 6b.
  • the cross section of coupling pocket 4 changes, at point 14 in FIG. 7, from a downward widening shape into a downward converging one.
  • FIG. 8 When gooseneck 2 is fitted into coupling pocket 4 according to FIG. 8, a double wedging is created between gooseneck 2 and slanted side walls 16 of coupling pocket 4.
  • a coupling device for a dray a first coupling means at one end of a ooseneck which ooseneck is attached to a pulling ve rcle at one end t ereof and a second coupling means attached to one end of the dray, in which one of the first and second coupling means is a projection and the other a coupling pocket adapted to receive the projection for supporting said one end of the dray and in which the first and second coupling means have slanting side walls deviating from the vertical plane and dimensioned so that, when lifted, the slanted side walls of the projection are wedged between the slanted side walls of the coupling pocket in order to create a pulling coupling between the dray and the pulling vehicle.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Agricultural Machines (AREA)
  • Handcart (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
US00200032A 1970-11-20 1971-11-18 Coupling device for a dray Expired - Lifetime US3729215A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI703134A FI45259C (fi) 1970-11-20 1970-11-20 Kuorma-alustan kytkinlaite.

Publications (1)

Publication Number Publication Date
US3729215A true US3729215A (en) 1973-04-24

Family

ID=8508039

Family Applications (1)

Application Number Title Priority Date Filing Date
US00200032A Expired - Lifetime US3729215A (en) 1970-11-20 1971-11-18 Coupling device for a dray

Country Status (8)

Country Link
US (1) US3729215A (de)
DE (1) DE2157255C3 (de)
DK (1) DK126364B (de)
FI (1) FI45259C (de)
GB (1) GB1329315A (de)
NL (1) NL167637C (de)
NO (1) NO134611C (de)
SE (1) SE362405B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874703A (en) * 1974-07-22 1975-04-01 Ctec Corp Roll trailer hitching apparatus
US4690328A (en) * 1985-08-05 1987-09-01 Bentonspritz Nascgubeb Gmbh Co. Spraying machine
US4834000A (en) * 1985-08-06 1989-05-30 James Darnell Load and roll pallet
US5161933A (en) * 1988-03-16 1992-11-10 Sft Ag Spontanfordertechnik Apparatus for handling heavy loads
US6694894B1 (en) 2002-03-18 2004-02-24 C.M.I. Freight-Trans, Inc. Load-and-roll pallet
US20110182706A1 (en) * 2010-01-22 2011-07-28 Marola Martin A Heavy Duty Vehicle Recovery System
US20230331451A1 (en) * 2022-04-15 2023-10-19 Sonoco Development, Inc. Moving system for cores and tubes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2389211A (en) * 1943-01-25 1945-11-20 Robert W Pointer Low bed trailer
US2871027A (en) * 1956-06-21 1959-01-27 Arthur C Brockman Semi-trailer structure and tractor and semi-trailer combination
US2978128A (en) * 1956-03-12 1961-04-04 Jr Anthony Polich Detachable gooseneck hydraulic connector for trailers
US3450417A (en) * 1966-08-13 1969-06-17 Fiala Kg Martin Device for the hitching of a loading platform
US3645559A (en) * 1970-04-24 1972-02-29 George T Stafford Jr Trailer having gooseneck and bogie connected selectively to each other and to cargo unit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2389211A (en) * 1943-01-25 1945-11-20 Robert W Pointer Low bed trailer
US2978128A (en) * 1956-03-12 1961-04-04 Jr Anthony Polich Detachable gooseneck hydraulic connector for trailers
US2871027A (en) * 1956-06-21 1959-01-27 Arthur C Brockman Semi-trailer structure and tractor and semi-trailer combination
US3450417A (en) * 1966-08-13 1969-06-17 Fiala Kg Martin Device for the hitching of a loading platform
US3645559A (en) * 1970-04-24 1972-02-29 George T Stafford Jr Trailer having gooseneck and bogie connected selectively to each other and to cargo unit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874703A (en) * 1974-07-22 1975-04-01 Ctec Corp Roll trailer hitching apparatus
US4690328A (en) * 1985-08-05 1987-09-01 Bentonspritz Nascgubeb Gmbh Co. Spraying machine
US4834000A (en) * 1985-08-06 1989-05-30 James Darnell Load and roll pallet
US5161933A (en) * 1988-03-16 1992-11-10 Sft Ag Spontanfordertechnik Apparatus for handling heavy loads
US6694894B1 (en) 2002-03-18 2004-02-24 C.M.I. Freight-Trans, Inc. Load-and-roll pallet
US20110182706A1 (en) * 2010-01-22 2011-07-28 Marola Martin A Heavy Duty Vehicle Recovery System
US8690514B2 (en) * 2010-01-22 2014-04-08 Martin A. Marola Heavy duty vehicle recovery system
US20230331451A1 (en) * 2022-04-15 2023-10-19 Sonoco Development, Inc. Moving system for cores and tubes
US11981490B2 (en) * 2022-04-15 2024-05-14 Sonoco Development, Inc. Moving system for cores and tubes

Also Published As

Publication number Publication date
NL167637B (nl) 1981-08-17
NO134611B (de) 1976-08-09
DE2157255C3 (de) 1983-03-10
DE2157255A1 (de) 1972-06-08
SE362405B (de) 1973-12-10
DE2157255B2 (de) 1979-03-08
NL167637C (nl) 1982-01-18
NL7115881A (de) 1972-05-24
GB1329315A (en) 1973-09-05
NO134611C (de) 1976-11-17
FI45259B (de) 1971-12-31
FI45259C (fi) 1973-12-03
DK126364B (da) 1973-07-09

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