DE2254886A1 - LIFT TRUCK WITH DETACHABLE FORK - Google Patents

Description

Forklift with an abnormal fork.

The invention relates to attachment of devices acting on loads and in particular of the attachment device for fork prongs for forklifts.

With the '^ axes of the load handling capacity " in the case of forklifts and vehicles of the same type, the dimensions and weights of those acting on the load have changed Means of this stacker, like the fork prongs, enlarged considerably, so that, for example, each fork prong of Forklifts designed for heavy work tasks, for example for lifting capacities between 22 to 45 t must be and can have a weight between 1.1 to and 1.6 to. As a result of handling such severe Load moving elements which are not easily affected by the Vehicle are separable, a significant problem arises by the use of other equipment, such as Overhead traveling cranes that require handling. One Such expensive .Main equipment, such as overhead cranes, is not only reflected in a relatively uneconomical one Effort, but also requires a very tedious work process to such fork prongs or corresponding Attach and remove load handling elements. In addition, there are considerable lost times due to the

309825/0298

the time required for this work.

Heavy material handling devices of the type under consideration are often used in various material handling jobs. For example, such large capacity forklifts are used in the containerized industry for the handling of freight or truck size containers with the help of special container handling devices related, which are located on the lifting carriage of the forklift. Such a use require the removal of forks with which the truck for different types of load ~ handling operations can be used. It is for It is important to be able to operate the device from a device or a load handling device to move on to another as quickly as possible, since any such transition activity is unproductive is. In cases where devices such as container handling devices, are used, such work operations must often in large open Courtyards and grand railway stations are run where no auxiliary equipment, such as overhead cranes, can be used without further ado are to handle the forks and the like.

Fork carrier constructions for the forklifts intended for heavy work have therefore been used by the applicant, as shown and described in the applicant's catalog CY-525/625/700-I, where the fork prongs and a container handling device are alternately arranged in the same Stacker are shown. The fork prongs are fixedly attached to support rods which reach through openings in the upper part of each prong. To such forks to remove, it is necessary from each Gnbol / .tnko and Gabelträtfor the s refuel ftfrml / 'o Τι · η.ι - "κΠrij Uiirp-or I I;. · .Ιι tMili'm'iicu or ru liiuon; '/. um Wlederelnbnu the fork prong it was necessary to carry the fork prong with. the help' olnor other device,

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for example with a crane and inserting the tubular rod through the opening in the support member of the fork carriage and through the opening in the upper end of each fork prong. _o .

In the series of lighter handling devices in the case of lifting vehicles for heavy working conditions, the applicant has a "quick change" device developed through which it is possible to operate the truck between different types of load handling devices in a very short period of time, as stated in the sales brochure SS 17oo of the applicant is shown and explained. The '■ Changing device for such relatively light lifting vehicles and devices, but can not be the heavy equipment used to perform work apply in difficult conditions, a problem, which is achieved by the invention.

The invention provides for quickly and easily attachable and detachable load application means for heavy loads Vehicles for material handling under difficult working conditions, for example when attaching forks on the support carriage of a forklift, the operator alone easily attaching and detaching each fork prong no external device or machine or special personnel is necessary. Attaching or Following the assembly of the forks, means are provided at the attachment point to prevent accidental loosening: to avoid the fork prong. These means can easily be brought into place by the operator.

It is a first object of the invention to provide improved means for attaching the load engaging means Means to be provided for material handling vehicles. .

It is an important subject of the invention, for heavy lift truck devices for difficult ones

30982E / 02Ö8

Working conditions to provide means which the attaching and releasing heavy forks by means of actuators operated by the operator of the truck Funds to be provided.

Other objects, features and advantages of the invention will appear from the following description in connection with the drawing.

The drawing illustrates an embodiment of the invention.

Fig. 1 is a perspective view of a heavy lift truck for difficult working conditions; A fork carriage and fork prongs are attached in the event of multiple marriages are embodying the invention;

Figure 2 is a section on line 2-2 in Piß. 3;

KJi- · ;. *> YrA. olno Tei.latirnansirht im Au (YiU oil nor GnWvU-, inko and their attachment means;

Vi ",. 4 partially shows the fork carrier, a fork prong and the attachment pins shown in FIG. 1 in a perspective view, the fork prong being detached from the attachment means.

liln r big heavy lift truck is common with the reference / .ο ic hen Io. He has a mast assembly 12, on which a support carriage assembly 14 is attached for lifting. The support carriage assembly has a substantially rectangular framework with an upper and a lower cross member Io and 18 attached to side plates 2o and 22. The latter are located between a pair of tubular Support rods 24 and 26, which are arranged in the upper corner parts of the stacking bracket and be spaced from one another in the transverse direction and are coaxial with one another. The bars 24 and 26 are spaced downward from the upper beam Io and are carried at their outer ends, which into the

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Openings Jo and 32 of the side plates 2o and 22 engage. The inner ends engage in a second pair of openings 34 and 36 which are provided in a pair of jaws 38 and 40 which are spaced apart from one another in the transverse direction and which point downward from the carrier 16. A plate 42 int zuB, attached by means of bolts and Ubor-F.roifM, Jodoij Krvlo Ölnor dor support rods 24 and ίίΟ, whereby each rod is initially fixed in the openings.

The fork carriage comes with a pair of upright Plates 44 and 46 fitted between beams 16 and 18 and flanges 48 and 5o at the upper ends of the plates, which are connected to support straps 38 and 4o, the support rods and the associated forks are equipped. On the inside Corner portion of each plate 44 and 46 is a fork support attached, the one of which is shown at 52. They fasten the entire load carriage in a known manner and the fork assembly via guide rollers on the fork arms which are in the inner chambers of a pair of interiors extendable double-T-shaped beams of the masts 12 for lifting opposite the two inner double-T-shaped Supports 54 and the outer fixed double-T-shaped Supports 56 with the help of a lifting cylinder 58 and the associated Lifting device are provided.

A pair of fork suspension arms 60 and 62 are attached to rods 24 and 26 for supporting a pair of fork tines 64 and 66 . Each of the fork hangers can be displaced in the transverse direction along the rod 24 or 26 in order to reach the selected spaced position between the rod ends by transverse displacement. The shifting takes place with the aid of a pair of opposite side shifting hydraulic cylinder assemblies 68 and 7o which are suitably connected at the bottom ends to one of the plates 44 and 46 and at the rod ends to the suspension arms,

3 O 9 8 2 S / O 2 9 8 * ad

as will be described below.

The pair of lugs covered by the Gabe barrel are of such a design with the exception that the door connection and the piston rods for lateral displacement are intended for right-hand and left-hand arrangement. The description of a suspension bracket arrangement is sufficient for both. Figs. 2 to 4 show the details in partial view on the right-hand side of that in Pig. I arrangement of the fork 66, the fork suspension 62 and the load carriage shown.

The fork hanger 62 has a pair of spaced apart side plates 72 and 74 with openings in the upper ends for slidably receiving the rod 2b, from which the plates 72 and 74 hang downward. The plates 72 and 74 are connected to each other at the lower end portion by a pair of cross-connecting plates 7o and 78. A mounting block 8o is attached to the plates 7b and 78 and has an opening 82 for receiving a connecting pin which engages the forked end 84 on the piston stem of the cylinder assembly Jo (Figs. 4). The upper end portion of the plates 72 and 74 becomes / in one

ι I

specified distance by a pair of transversely spaced fork hangers Kind of hooks 86 and 88 held, for example by welding on the inner side surface of the plates 72 and 74 are attached and which, conversely, are connected to one another by welding to a plate 9o, which is attached to the back of the hanger.

A rotatable sleeve 92 is disposed on the rod 26 between the hangers 86 and 88. On one Part of the circumference of the sleeve 92 is a pair of curvilinear spaced apart in the transverse direction Stops 94 and 96 arranged, which the in the

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Outline (configuration) shown in the drawing and are connected to each other by a crosspiece 98, which can serve as a handle for the operator to rotate the sleeve and the stops on the shaft 26 between that with solid lines and that with broken lines in Figs. 2 and 3> the position shown. When the sleeve 92 is rotated so that the stops are in the upper position or the position shown with broken lines, the ends of the handle cross piece 98 grip which a part of the suspension links 86 and 88 overlap, in transverse cutouts or notches loo and Io2, which in the transverse direction in the upper rear surface of the hangers are provided, which gravity stops the hold in the position shown. The focus of the The sleeve assembly and the stops are in such a position that, when turned clockwise, they are pulled out Position shown in lines, as shown in Pig, 2, the stop arrangement in this position by gravity remains.

The upper end of the fork 66 is designed so that it forms an upwardly facing, width-reduced projection Io4, which has the shape shown. In a transverse bore in the upper end of the cantilever there is provided a pin I06 which protrudes on both sides in one of the opposite directions from the cantilever Io4 to form the pin parts between the rod and the main body of the fork for insertion into the hook parts loB of the fork suspension, as it is in the figures of Kezeltft.

The way it works is as follows:. ;

If desired, the fork prongs after the following separation of another connection of the fork carriage to «! rj - '. reifoii, i3t 03 only required / the stacker

1 I.

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to maneuver into a position in which it faces the fork prongs, which are arranged at a distance on a support surface so that the stacker can be brought to the fork prongs with lowered support carriage and the pin I06 can get into the hook part I08, as is best shown in Fig. 4 can be seen. After the pin has been aligned in the hook part, the support carriage is raised, with the result that the pin comes fully into engagement with the recess of the hook part, as shown in FIGS. The operator then turns the sleeve or bushing 92 by hand nno tior in.11. Kobroolionon lines wiodortfotfobenon ίϊteilung In dir mil. Mu.'iw .-. Oj ^ mkjm lines wiotlorKctfrlxMu? JJCr 1..1 .um; ·· ;, w'Jo o «Kltf. :? and j /, ei ^ U. In this position SLII-i the Anschlüge ο4 and ° o in an upper end of the display ^ - vorsUnndes Io4 cross or covering Lage'gebrnohU, wherein never is a liberation of Gnbel ^ inlce for UEN case prevent DNSS the tine tfe ^ en an obstacle occurs when lowering or the like.

To release or separate the fork, it is only necessary that the fork support slide on a base or floor area is lowered ", in which the fork support slide is lowered to below the position in which the forward projecting prongs of the fork are in contact with the wing. this has a lifting of each pin loo with respect to the engaging hook part Io8 result. In this position is the stacker moves back away from the forks, causing the fork hangers 86 and 88 and the forks assume the position shown in FIG. 4 with respect to one another. The forklift can then be used for any other Purpose together with another connection that can be assigned to the bearer, * / »» ■ «; .- ■■ · < '> -...-. / ·· "

A wide variety of changes in the structure and arrangement of the parts are possible without this the inventive idea is abandoned.

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Claims (7)

Claims. 1 .J forklift truck, characterized by a fork carriage attached to a mast for lifting; a fork attachment over a transverse fork carriage; ,. a pair of laterally spaced fork suspension arms facing downward from the carrier; a fork joint configuration adapted to be received by a pair of hanger arms; Rotatable adjustment means provided between the pair of hanger arms, the rotation of which in one direction enables the fork prongs to be released from the hanger arms and the rotation of which in the other direction blocks the removal of the fork prong from the arms. 2. A lift truck according to claim 1, characterized by a fork carriage attached to a mast for lifting; a fork attachment over a, transverse Fork carriage; a pair transversely spaced from each other having downwardly directed fork hanger arms on the carrier; fork tines that are easily attachable and detachable to the fork hangers; a connection between the Fork hanger arms and means for actuating the fork open hanger arms in the axial direction of the carrier either with or independently of the forks. J5. Lift truck according to Claim 1, characterized in that that for fork attachment the fork hanger arms can be actuated axially on the fork carriage either with or independently of the fork prongs. 4, forklift truck according to claim 1, characterized in that that the fork carriage is a horizontal bar and the setting means borrowed from a position rotatable between two angular graduations on the rod Sleeve and located on the sleeve and with this rotatable stops to prevent the Fork tines of the hanger arms in the one active position - Io - the sleeve and i'. to enable the release or Decrease exist in the other active position of the sleeve. 5 · Forklift truck according to claim 1, characterized in that the fork hanger arms consist of a pair of forwardly open levers; the fork prong on the 9b§F§n Inde in the opposite direction §n unloading ^ de pins which can be picked up by the hooks in an upright position of the fork prong; the adjustment means consist of a sleeve rotatable on the rod with stops on it, the rotation of the sleeve to control the relationship between the fork prong and the sleeve taking place in one direction or the other. 6. Forklift truck according to claim 1, characterized in that that the fork prong at its upper end has an approach which can be received between the fork hanger arms having; the fork hanger arms open to the front form; there are outwardly protruding pegs at the base of the fork prong on opposite sides, which can be picked up by the hooks and moved out of them again; the setting means from one on the fork carriage rotatable sleeve with located on her and with her in and out of a blocking position opposite The upper approach of the fork prong consists of rotatable stops to prevent the fork prong from being accidentally released to prevent during the work of the forklift when the stops are rotated to a first position, and to permit separation of the fork prong from the pair of fork hanger arms when the stops are in a second Position are rotated, and that the fork prongs are easily picked up by the fork arms and separated again can, when the stops are in the second position, by the support slide for the fork opposite and open the attack pin of the fork attachment 3O982S / 0298 bad original is manipulated when the fork prong ^ self-supporting on the wing of the cart. . 7. A lift truck according to claim 2, characterized in that each fork hanger arm is outer downward has facing side plates attached to the arm and depending from the fork carriage and that the actuating means are attached to the fork carriage and side plates. 3 09825/0298 Jl Blank page