DE1010012B - Lift mast for forklifts - Google Patents

Description

The invention relates to a mast for forklift trucks, consisting of two mutually displaceable Share.

There are vehicles with raised and lowered superstructures known in which the support column consists of two there is tubular, telescopically displaceable parts, the inner tubular part being displaceable and the outer is fixed.

In the case of forklifts that are equipped with a lifting carriage, the mounting of the same would be in the inner sliding pipe part mean a very cumbersome measure. It is also a safe one Guiding of the lifting carriage is not easily possible.

According to the invention, these disadvantages are avoided in that an inner tube is the fixed and an outer tube, the movable part of the mast with preferably rectangular Form cross-section, in the interior of which is connected to the outer tube and a lifting carriage Hoist is arranged.

As a result, the lifting mast is extremely simple in its design, and the lifting carriage is without to beat led. Furthermore, no machining of the surfaces that slide on one another is required.

An exemplary embodiment of the invention is shown schematically in the drawing. It shows

Fig. 1 shows the mast with the lifting mechanism retracted and the lifting carriage lowered in the loading position,

FIG. 2 shows the mast from FIG. 1 with the lifting carriage raised to ground clearance,

3 shows the mast extended to the maximum lifting height and

Fig. 4 shows a cross section through the mast along the line IV-IV of Fig. 2,

Fig. 5 shows the upper part of the mast in a longitudinal section along the line V-V of Fig. 4 in a somewhat enlarged Depiction.

A central, expediently square tube 1 forms the fixed part of the Mast, on which three pairs of guide rollers 2, 3 and 4 are mounted, namely the one pair 2 on the lower, the other two pairs 3 and 4 at the top of the mast.

On these rollers 2 to 4 there is a rectangular tube 5 pushed over the central mast 1 Cross section (see FIG. 4), at the upper end of which the chain wheel 6 is mounted for the lifting carriage 7 lifting chain 8 fastened on the one hand and at the foot of the fixed central mast 1 on the other hand.

In the cavity of the central mast 1, the hydraulic piston 9 is arranged, which is at the upper end of the displaceable outer tube 5 engages.

Lift mast for forklifts

Applicant:

MIAG

Mill construction and industry G. mb H. _r
Hanover

Kurt Steinert, Braunschweig,
has been named as the inventor

On the latter is the fork prongs 10 carrying

ao lifting carriage 7 guided by the pairs of rollers 11 and 12. One of these is a pair of rollers 11 on the The front of the mast is arranged at the bottom of the slide 7, the pair of rollers 12 are arranged on the rear of the mast at the top of the slide. In addition, as indicated in FIG. 4, guide rollers 13, 14 as well as apart from the large guide rollers 2 to 4 a few smaller lateral guide rollers 15, 16 between the central and outer mast 1 or 5 be arranged.

Thus, with the hoist retracted and the carriage 7 lowered to the ground (FIG. 1), the outer Mast tube 5 can be moved correspondingly deep down over the central mast 1 without affecting this to be prevented by the connecting arm 17, which connects the lifting mast to the vehicle, is his lower end 18 beveled.

The two upper pairs of guide rollers 3, 4 are fully extended in one of the overlap 19 of the two Mast tubes 1, 5 arranged at a corresponding distance from one another (Fig. 3).

Claims (5)

PATENT CLAIMS: 1. Lifting mast for forklifts, consisting of two mutually displaceable parts, characterized in that an inner tube (1) forms the fixed and an outer tube (5) the movable part of the lifting mast with a preferably rectangular cross-section, in the interior of which with the outer Tube and a lifting carriage (7) connected lifting mechanism (9) is arranged. 2. Lifting mast according to claim 1, characterized in that the lifting mast tubes (1.5) are with rolling friction lead to each other. 709 547/278 ο ίο.αϊ Mu 3;,;,., 3. Lifting mast according to claim 1, and 2, thereby _ ..._. marked that the - two - "^ lift mast tubes · '-— ■ {1, S) lead to each other with three pairs of rollers (2 to 4), of which one pair (2) -am-un- -v teren end, <di ^e -both;,; other pa ^ re (3τ, 4) _Γ -in ?: 5;. · --'-... .eijiem '^ r / overlap, (i.9 ) ._jdgr. yoll ^ executed ': ^ *. \ ._ _s , nen. mast parts (1, 5) corresponding distances at the ^ upper' end of the inner central mast (1) --are / · · - ^: " j '·'" ■ * ■■ "- '-' ■ '- 4. Lift mast according to: any of the above . Claims, characterized 'characterized in that the lower end of the ^ ■ outer'n-' lifting mast tube (5) is cut diagonally for the purpose of . "Binding .. (17Xd.es .. innaren. Z.entml.en HttbmaatCQhxes .. _. ^ put to enable the truck chassis: - * ■ ''"■ j 5th mast! according to any one of the preceding claims, characterized in that the lifting carriage (%) is supported on the rear of the outer lifting mast tube (5) by means of lower guide rollers . Considered publications:
German paterite registration St 3347 XI / 81e;
German Patent Nos. 884 021, 888 826;
U.S. Patent Publication No. 2,517,938;
. "JranzosisshS-.Piie.nt5eh.rift.Nr. S§6 "309, .. ...". 1 sheet of drawings © 709 54W278 5.57