CA2416235A1 - Mount for fork-lift tine - Google Patents

Mount for fork-lift tine Download PDF

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Publication number
CA2416235A1
CA2416235A1 CA002416235A CA2416235A CA2416235A1 CA 2416235 A1 CA2416235 A1 CA 2416235A1 CA 002416235 A CA002416235 A CA 002416235A CA 2416235 A CA2416235 A CA 2416235A CA 2416235 A1 CA2416235 A1 CA 2416235A1
Authority
CA
Canada
Prior art keywords
bracket
combination defined
lifter
latch element
support
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.)
Abandoned
Application number
CA002416235A
Other languages
French (fr)
Inventor
Arnold Vetter
Christian Schreiber
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.)
VETTER UMFORMTECHNIK
Original Assignee
VETTER UMFORMTECHNIK
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 VETTER UMFORMTECHNIK filed Critical VETTER UMFORMTECHNIK
Publication of CA2416235A1 publication Critical patent/CA2416235A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, 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
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices 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
    • B66F9/075Constructional features or details
    • B66F9/12Platforms; Forks; Other load supporting or gripping members

Landscapes

  • 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)
  • Fats And Perfumes (AREA)

Abstract

in combination with a toad litter and a vertically displaceable support adapted to carry the lifter, a mount has an upper bracket having a downwardly open mouth adapted to fit over the support and a continuous lower connection extending horizon-tally a full width of the bracket and fixing a lower edge of the bracket to the lifter.

Description

MOUNT FOR FORK-LIFT TINE
SPECIFICATION
FIELD OF THE INVENTION
The present invention relates to fork-lift tine. More particularly this invention concerns a mount for a removable fork-lift tine.
BACKGROUND OF THE INVENTION
A standard fork lift or load picker as described in US
patent 5,678,659 and DIN 15178 is a self-propelled vehicle having a vertically displaceable support carrying a fork normally having a load lifter constituted as two horizontally outwardly project-ing tines. These tines are slipped under a load, for instance into the pockets of a pallet on which the load is stacked, and the support is raised to pick the load up, whereupon the vehicle can travel to a location where the load is set down or stacked.
Since the fork must normally be designed for the par-titular load, it is standard as described in German patent docu-ment 3,301,756 to mount it so it can be removed from the verti-tally displaceable support of the vehicle. Thus a fork with three flat tines can be switched with a fork having two round tines, or even with another load lifter. To this brackets are provided with mouths that engage with lift points on the support, allowing the transmission of considerable vertical force from the fork to the support. These brackets are welded to the rear face of the fork or load lifter.
To prevent the fork from shifting on the support points, it is known for example as described in ISO 2328 to pro-vide a spring-loaded latch bolt that is vertically slidable in the bracket to fit in an upwardly open notch in the vehicle-mounted support. A retaining lever acts on this slidable bolt.
Thus the bracket is formed with a relatively large-diameter hole accommodating the bolt, this hole being just where the bracket fits over the holder.
Such a construction constitutes a weak link in the connection between the fork~and the support. The exact location where the brackets fit over the support is interrupted by the bolt hole so that the weld securing the mounting bracket is also interrupted at this location. The result is substantial weaken-ing of the exact region where the considerable forces that the fork must transmit back to the support are concentrated. Fur-thermore the known construction provides a trap for moisture and the like, so that the support point is further liable to corrode.
and degrade with time: While above-cited German patent document 3,301,756 attempts a solution to this problem, the construction is complex and expensive.
OBJECTS OF THE INVENTION
It is therefore an object of the present invention to provide an improved mount for a load lifter on a support:
Another object is the provision of such an improved mount for a fork or the like on a support which overcomes the above-given disadvantages, that is which is very strong, simple, and easy to construct.
SUI~iARY OF THE INVENTION
Irk combination with a load lifter and a vertically displaceable support adapted to carry the lifter, a mount has according to the invention an upper bracket having a downwardly open mouth adapted to fit over the support, and a continuous lower connection extending horizontally a full width of the bracket and fixing a lower edge of the bracket to the lifter.
Thus with this system the most highly stressed part of the connection between the bracket and the load lifter; normally a fork tine, is formed by a continuous weld. Such a weld can be made to very high standards since it is not interrupted. As a result the problem of the bracket tearing off the load lifter is largely ruled out.
According to a further feature of the invention a con-tinuous upper connection extends horizontally a full width of the bracket and fixes an upper edge of the bracket to the lifter.
Furthermore upright side connections extending vertically between ends of the upper and lower connections and fixing side edges of the bracket to the lifter. These connections can all be in fact a continuous rectangular weld seam that can easily be produced by a robot welder so that it will be perfectly uniform, especially when according to the invention the back face of the lifter is planar and flatly engages a Front face o~ the bracket. The fact that the weld seams or fillets forming the connections are annu-larly continuous, means moisture cannot get between the bracket and the load lifter, eliminating a potential corrosion problem.
In accordance with the invention a latch element on the bracket can engage the lifter for retaining the bracket against movement relative to the lifter. To this end the support is formed with one or more notches and the latch element is displaceable into and out of a latched position engaged in one of the notches.
The latch element can be so weighted that gravity causes it to assume the latched position. Alternately a spring can be provided to urge it into this position: The element can be pivotal or slidable into and out of the latched position. It can also include a shaft pivotal about a shaft axis and having a radially projecting end engageable into and out of the notch on pivoting of the shaft. In another system the latch element in-eludes a coupling wheel, a pin eccentrically connected to the wheel and displaceable in the bracket to rotate the wheel, and a latch member eccentrically connected to the wheel and movable into and out of the notch on rotation of the wheel. In any case the latch element has a tip fittable complementarily into the notch. In another arrangement the latch element is a threaded bolt that can be screwed down into the latched position.

BRIEF DESCRLPTION OF THE DRAWING
The above and other, objects, features, and advantages will become more readily apparent from the following description, it being understood.that any feature described with reference to one embodiment of the invention can be used where possible. with any other embodiment and that reference numerals or letters not specifically mentioned with reference to one figure but identical to those of another refer to tructure that is functionally if not structurally identical. In the accompanying drawing:
FIG. 1 is a perspective view of a fork according to the invention;
FIG. 2 is an enlarged view of the mount of the fork of FIG. 1;
FIGS. 3 and 4 are back and side views of the mount in the latched position,~
FIG. 5 is a side view of the mount in the unlatched position;
FIGS. 6. and 7 are top and bottom views of the mount;
FIG. 8 is a perspective view of the latching element of the mount; and FIGS. 9, 10, and 11 are perspective views of alterna-tive latching elements in accordance with the invention.

SPECIFIC DESCRIPTION
As seen in FIGS. 1 through 8 a load lifter is formed as an L-shaped fork 1 having a horizontal leg 2 adapted to carry a load and a vertical leg 3 adapted to be attached to a vertically displaceable support sho~ra .at 20 in FIG. 5 only. This leg 3 carries a downwardly open upper hook bracket 4 and an upwardly open lower hook bracket 5 so that the fork 1 can be slid horizon-tally onto the end of the support 20: and will not be able to move vertically once installed. The entire load carried by the fork 1 is therefore effective outward and dovmward as shown by arrow 6 and upward and inward as sho~m by arrow 6' on the upper bracket Accordir~g to the invention the bracket 4 is secured to the back face of the vertical leg 3 at a horizontally continuous lower weld seam 7, at a horizontally continuous upper weld seam 8, and at a pair of vertical and continuous side seams 9 and 10 that bridge the seams 7 acid 8 and form therewith a rectangular annularly continuous seam 7, 8, 9, and 10. The continuous nature of these seams or fillets and the fact that the abutting faces of the bracket 4 and lifter leg 3 are planar means that the seams 7 - 10 can be made in one Bass by a weldi=ig robot and will be essentially uniform and perfect, imparting no significant nonuni-form stresses to the parts 3 and 4 they join. Furthermore they close the space between the rectangular front face of the hook 4 _ 7 _ ~ _ ~ CA 02416235 2003-O1-14 and the planar rear face of the leg-3 so that no water can get in and corrode these parts.
To prevent the lifter or fork 1 from shifting horizon-tally on the support 20~ it is provided with a latching element 11 pivoted at,a horizontal axis T2 and having a lower end 13 engageable in one of a plurality of upwardly open notches 21 formed in the support 20. A spring such as shown schematically at 22 (FIG. 4 only) can urge it into the latched position shown in FIG. 4 and/or the element 11 caa be weighted such that; when in its normal orientation as shown in the drawing, gravity urges it into this position. A secondary latch can be provided to hold it. in the unlatched position of FIG. 5, which secondary latch needs to be manually released for the element 11 to assume the latched position.
FIG. 9 shows another latch member 11' that has a pair of angled slots through which pass pins 15 and 15' seated in the hook 4 so that a lower end l6' of the member l1' can move into the notch 21 by gravity. In FIG. 10 a latch member 11" has a shaft pivotal as indicated by arrow 6" to pivot a lower-end pawl or finger 16" into the notch 21. FIG. 11 shows an element 11 " ' having a vertically displaceable shaft 18 pivoted eccentrically on a wheel 19 on which is also pivoted; crank-fashion, another member 16 " ' movable horizontally as indicated by arrow 6 " ' into and out of the notch 21. It'is also possible for the element 11 to be secured by a coarse screwthread in the hook 4 so that when screwed in it projects into the notch 2l.

Claims (16)

1. In combination with a load lifter and a vertically displaceable support adapted to carry the lifter, a mount com-prising:
an upper bracket having a downwardly open mouth adapted to fit over the support; and a continuous lower connection extending horizontally a full width of the bracket and fixing a lower edge of the bracket to the lifter.
2. The combination defined in claim 1, further com-prising a continuous upper connection extending horizontally a full width of the bracket and fixing an upper edge of the bracket to the lifter.
3. The combination defined in claim 2, further com-prising upright side connections extending vertically between ends of the upper and lower connections and fixing side edges of the bracket to the lifter.
4. The combination defined in claim 1 wherein the lifter is a fork tine.
5. The combination defined in claim 4 wherein the tine has a planar back face against which the bracket fits.
6. The combination defined in claim 1, further com-prising means including a latch element on the bracket and engageable with the lifter for retaining the bracket against movement relative to the lifter.
7. The combination defined in claim 6 wherein the support is formed with a notch and the latch element is displace-able into and out of a latched position engaged in the notch.
8. The combination defined in claim 7 wherein the latch element is so weighted that gravity causes it to assume the latched position.
9. The combination defined in claim 7 wherein the latch element is pivotal into and out of the latched position.
10. The combination defined in claim 7 wherein the latch element is slidable into and out of the latched position.
11. The combination defined in claim 7 wherein the latch element includes a shaft pivotal about a shaft axis and having a radially projecting end engageable into and out of the notch on pivoting of the shaft.
12. The combination defined in claim 7 wherein the latch element includes a coupling wheel, a pin eccentrically connected to the wheel and displaceable in the bracket to rotate the wheel, and a latch member eccentrically connected to the wheel and movable into and out of the notch on rotation of the wheel.
13. The combination defined in claim 7 wherein the latch element has a tip finable complementarily into the notch.
14. The combination defined in claim 7, further com-prising a spring urging the latch element into the latched posi-tion.
15. The combination defined in claim 1 wherein the support is formed with a plurality of such notches into which the latch element is engageable.
16. The combination defined in claim 1, further com-prising a lower hook having an upwardly open mouth engageable with the support.
CA002416235A 2002-02-07 2003-01-14 Mount for fork-lift tine Abandoned CA2416235A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10205141A DE10205141A1 (en) 2002-02-07 2002-02-07 Load handling devices
DE10205141.0 2002-02-07

Publications (1)

Publication Number Publication Date
CA2416235A1 true CA2416235A1 (en) 2003-08-07

Family

ID=27588480

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002416235A Abandoned CA2416235A1 (en) 2002-02-07 2003-01-14 Mount for fork-lift tine

Country Status (5)

Country Link
EP (1) EP1334948B1 (en)
AT (1) ATE444935T1 (en)
CA (1) CA2416235A1 (en)
DE (2) DE10205141A1 (en)
ES (1) ES2333785T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190382253A1 (en) * 2018-06-15 2019-12-19 Arrow Acquisition, Llc Quick connect system for industrial and construction equipment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2592042A1 (en) * 2011-11-11 2013-05-15 Vetter Umformtechnik GmbH Carrier device for load bearer and adapter for carrier device
FR3014092B1 (en) * 2013-12-03 2017-05-26 Benoit Pierre Andre Gobard FAST ATTACHING DEVICE FOR HANDLING OR LOADING MACHINES

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975924A (en) * 1959-06-25 1961-03-21 Dyson & Sons Adjustable lift fork mounting
DE1283153B (en) * 1965-11-12 1968-11-14 Heinz Schmidt Dipl Ing Loader with side-shifting forks
US3528580A (en) * 1967-12-08 1970-09-15 Eaton Yale & Towne Lift truck carriage and fork therefor
DE2037664A1 (en) * 1970-07-29 1972-02-03 Linde Ag, 6200 Wiesbaden Fork tines for forklift trucks
GB1315865A (en) * 1970-10-26 1973-05-02 Lansing Bagnall Ltd Lifting carriages for fork lift trucks
US4125199A (en) * 1973-04-09 1978-11-14 Linde Aktiengesellschaft Lateral-shift device for fork-lift vehicles
US4488422A (en) * 1978-03-23 1984-12-18 Jos. Dyson And Sons, Inc. Method of making forks for fork lift trucks
DE8301435U1 (en) * 1983-01-20 1983-05-19 Arnold Vetter Kg, 5900 Siegen, De FORK FORK FOR STACKER
DE8704699U1 (en) * 1987-03-30 1987-05-27 Arnold Vetter KG, 57080 Siegen Carrying device especially for forklifts
IT1223004B (en) * 1987-10-28 1990-09-12 Meccaniche Bolzoni Spa Costruz FORK UNITS FOR FORKLIFTS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190382253A1 (en) * 2018-06-15 2019-12-19 Arrow Acquisition, Llc Quick connect system for industrial and construction equipment
US10815105B2 (en) * 2018-06-15 2020-10-27 Arrow Acquisition, Llc Quick connect system for industrial and construction equipment

Also Published As

Publication number Publication date
ES2333785T3 (en) 2010-03-01
DE50311987D1 (en) 2009-11-19
EP1334948A1 (en) 2003-08-13
ATE444935T1 (en) 2009-10-15
EP1334948B1 (en) 2009-10-07
DE10205141A1 (en) 2003-08-28

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Legal Events

Date Code Title Description
FZDE Discontinued