DD156359B2

DD156359B2 - LIFTING DEVICE, ESPECIALLY FOR FORKLIFTS

Info

Publication number: DD156359B2
Application number: DD81227672A
Authority: DD
Inventors: Heinz-Juergen Ostermeyer; Wolfgang Zschauer
Original assignee: Ostermeyer Heinz Juergen; Wolfgang Zschauer
Priority date: 1977-11-23
Filing date: 1981-02-17
Publication date: 1986-07-16
Also published as: DD156359A2

Description

Zwecks optimaler Vertikalführung des Gabelträgers wird der Anlenkpunfct der Schwinge und des Neigungszylinders, der über den Verstellhebel mit der Schwinge und der zugehörigen Zugstange in funktionelier Verbindung steht gleichzeitig verändert, indem über die Verbindungsstange die Lenkerbewegung auf den Ausgleichswagen übertragen wird. Dieser bewegt sich in Fahrtrichtung und korrigiert über die in ihm gelagerte Schwing β sowie den Ventettheoe) und Zugstange die vertikale Gabertragerbewegung. Die Neigung dea Gabelträgere erfolgt durch den ebenfalls im Ausgleichswagen gelagerten Neigungazylinder über den Verstellhebel und die Zugstangen.For optimal vertical guidance of the fork carriage, the articulation point of the rocker and the tilt cylinder, which is operatively connected via the adjusting lever with the rocker and the associated tie rod, is simultaneously changed by transferring the link motion to the balance carriage via the connecting rod. This moves in the direction of travel and corrects the vertical Gabertragerbewegung on the stored in him swing β and the Ventettheoe) and pull rod. The inclination dea fork carrier is carried by the tilt cylinder also mounted in the balance carriage on the lever and the tie rods.

Die Vorteile dieser Lösung liegen neben der optimalen Vertikalführung in dam unmittelbaren außermittigen Anschluß des Gebeitragen ohne zusatzliche Abkröpfung des Tragarmes, in dar einfacheren Fertigung und Montage der Hubvorrichtung auf dem Fahrzeugrahmen, in der Verwirklichung einer geringeren Baubreite des Fahrzeuges bei gleichzeitiger Vergrößerung des Freihubes und der Bodenfreiheit und in der Verbesserung der Sichtverhattnisse für den Fahrer. Weiterhin wandert der Schwerpunkt des Fahrzeuges in Richtung Gegengewicht, so daß eine beachtliche Masaeraduzierung bei voller Gewihrleistung der Standsicherheit erreicht wird.The advantages of this solution are in addition to the optimal vertical guidance in dam direct eccentric connection of the Gebragragen without additional bending of the support arm, in simpler production and installation of the lifting device on the vehicle frame, in the realization of a smaller width of the vehicle while increasing the free lift and ground clearance and in improving the visibility of the driver. Furthermore, the center of gravity of the vehicle moves in the direction of counterweight, so that a considerable Masaeraduzierung is achieved with full Gewihrleistung the stability.

Dta Erfindung soll nachstehend an einem Ausführungabetspiel naher erläutert werden. Die zugehörige Zeichnung zeigt eine Seitenansicht der Hubvorrichtung im Prinzip.Dta invention will be explained in more detail below on a Ausführungsabetspiel. The accompanying drawing shows a side view of the lifting device in principle.

Auf dem Fahrzeugrahmen 1 ist außermittig die Stutze 27 lösbar angeordnet, in der im Gelenkpunkt 2 der Lenker 3 gelagert ist, der über dan Tragarm 11 mit dem Gabertriger 18 und der Schwinge 5 In funktionelier Verbindung steht Am Lenker 3 ist im Gelenkpunkt 28 die Verbindungsstange 29 gelagert die im Gelenkpunkt 30 am Ausgleichswagen 31 angreift. Dieser ist auf dem Fahrzeugrahmen 1 in Fahrtrichtung horizontal beweglich angeordnet Weiterhin sind in ihm die Schwinge 5 und der Verstellhebel 26 im Gelenkpunkt 32 und der Neigungszytinder 9 im Geienkpunkt 33 gelagert. Der Neigungszylinder 9 steht über den Verstellhebel 26 mit dan Zugstangen 25; 23 und dam Gabeltriger Ш in funktionelier Verbindung.On the vehicle frame 1, the support 27 is arranged eccentrically detachable, is mounted in the hinge point 2 of the handlebar 3, which is on dan support arm 11 with the Gabertriger 18 and the rocker 5 in functional connection At the handlebar 3 is in the pivot point 28, the connecting rod 29th stored in the pivot point 30 acts on the balance carriage 31. This is arranged horizontally movable on the vehicle frame 1 in the direction of travel Furthermore, the rocker 5 and the adjusting lever 26 are mounted in the pivot point 32 and the tilting cylinder 9 in Geienkpunkt 33 in it. The tilt cylinder 9 is above the lever 26 with dan tie rods 25; 23 and dam Gabeltriger funktion in functional connection.

Durch das Ausfahren der Kolbenstange 16 dee Hubzylinder* 7 wird das viergliedrige Kettengetriebe, bestehend aus Lenker 3, Tragarm 1T und Schwinge S, in Bewegung gesetzt und dar am vorderen Ende des Tragarmes 11 angeordnete Gabelträger 18 angehoben. Damit ein« genaue Vertikalführung de* Gebeitragers 18 erreicht wird, ist die Lagerung der Schwinge 5 im Gelenkpunkt 32 im Ausgleichswagen 31 in Fahrtrichtung horizontal beweglich vorgesehen. Die notwendige Korrekturbewegung wird vom Lenker 3 über die an ihm im Geienkpunkt 28 gelagerte Verbindungastange 29 auf den Ausgleichswagen 31 übertragen, gleichzeitig verfahrt der ebenfalls im Ausgleichewagen 31 im Gelenkpunkt 33 gelagerte Neigungszylinder 9, der über den Verstellhebel 26 und die Zugstange 25; 23 die Neigung des Gabelträgers 18 bewirkt.By extending the piston rod 16 dee lifting cylinder * 7, the four-link chain transmission, consisting of link 3, support arm 1T and rocker S, set in motion and raised at the front end of the support arm 11 fork carriage 18 is raised. In order to achieve an accurate vertical guidance of the bearing support 18, the bearing of the rocker 5 in the articulation point 32 in the compensation carriage 31 is provided so as to be horizontally movable in the direction of travel. The necessary correction movement is transmitted from the handlebars 3 via the connecting rod 29 mounted on it at the Geienkpunkt 28 on the balance carriage 31, at the same time the tilting cylinder 9, which is likewise mounted in the balance carriage 31 in the hinge point 33, passes over the adjusting lever 26 and the drawbar 25; 23 causes the inclination of the fork carrier 18.

Das Aufsetzender Stütze 27 einseitig auf den Fahrzeugrahmen 1, die am oberen Ende im Geienkpunkt 2 den Lenker 3 aufnimmt ermöglicht neben einer leichten Montag· eine einfachere Gestaltung des Tragarmes 11, so daß auch die Abkröpfung im Gabeterrerech entfallt Lediglich der Hubzylinder 7 ragt in das Fahrzeugrahmenseitenteil hinein, während der Ausgleichswagen 31 ebenfalls auf den Fahrzeugrahmen 1 aufgesetzt wird.The placement of the support 27 on one side of the vehicle frame 1, the handlebar 3 accommodates at the upper end in Geienkpunkt 2 allows a light Monday · a simpler design of the support arm 11, so that the bend omitted in Gabeterrerech Only the lifting cylinder 7 projects into the vehicle frame side part into it, while the balance carriage 31 is also placed on the vehicle frame 1.

Claims

-ι- 15β389 claim for invention:

1. Lifting device, especially for forklift trucks, whose main kinematic system consists of a four-link chain drive driven by a lifting cylinder, consisting of an eccentrically mounted on one side of the vehicle frame in a Geienkpuntrt handlebar, arranged at its other end, a Gabeitriger receiving support arm and a rear on desseq Tragarmabschnitt mounted rocker, composed and the Gabeitrager lagestabilisierendee system consisting of parallel to the support arm and the swinging "arranged tie rods, also eccentrically arranged on one side, according to Patent 134633, characterized gekennzei that on the handlebar (35, in one on the vehicle frame (1) releasably arranged support (27) is mounted in the articulation point (2) in a Gelenkpuntk (28) a connecting rod (29) is connected with its free end in a hinge point (30) on a balance carriage (31) is mounted, the horizontally movable in the direction of travel on the Fa in which further in a hinge point (32) the rocker (S) and in a hinge point (33) a tilt cylinder (9) via an adjusting lever (28) and the rocker (5) with the drawbar (2S) is in functional connection, are stored,

2. lifting device according to item 1, characterized gekennzhnt that on one side eccentrically from the inside outwards in a first vertical plane of the support arm (11) and the drawbar (23), in a second vertical plane, the support (27), the handlebar (3) the lifting cylinder (7), the rocker (S), the drawbar (25) and the balance carriage (31) with tilt cylinder (9) and adjusting lever (26) and in a third vertical plane, the connecting rod (29) are arranged.

3. Lifting device according to item 1 and 2, characterized in that the tie rods (23; 2S) and the adjusting lever (26) are each arranged twice, symmetrically to the associated vertical plane.

For this 1 page drawing

Field of application of the invention

The invention relates to a lifting device that allows vertical movement of the load to be absorbed and is particularly suitable for forklifts of various sizes according to patent 134633.

Characteristic of the known technical solutions

It is known from the patent 134633 that eccentrically on one side of the vehicle frame in a hinge point in front of the front axle of the handlebars, at its other end in a hinge point of the arm on the rear Tragarmabschnitt in a hinge point the rocker, between these two Gelenfcpunfcten in a Geienkpunkt the piston rod of the Lifting cylinder and the front Tragarmabschnitt pivotally mounted in a hinge point of the fork carriage. The associated, the Gabeitrager lagestabilisierende system consisting of the parallel to the support arm and the rocker tie rods that are in functional connection via a bearing plate is eccentrically arranged on one side. This lifting device has a complicated in its construction support arm, which does not allow optimal free travel and affects the center of gravity of the forklift unfavorable.

Object of the invention

With the lifting device, in particular for forklift _t , in addition to optimal visibility conditions for the driver, a simpler production and assembly are to be achieved while further improving the ratio of net mass to payload

Explanation of the essence of the invention

The invention has for its object to provide a lifting device, especially for forklifts, which allows the enlargement of the free lift, the more accurate vertical guidance of the fork carriage and reducing the necessary vehicle width a more favorable position of the center of gravity and thus extends the application areas. According to the invention this is achieved in that on the handlebar, which is mounted in a releasably arranged on the vehicle frame support in the hinge point, in a hinge point, a connecting rod is connected, which is mounted with its free end in a hinge point on his balance car. This balance carriage is arranged horizontally in the direction of travel movable on the vehicle frame. In him are still in a pivot point, the rocker and a pivot point a tilt cylinder, which is in operative connection via an adjusting lever and the rocker with the pull rod stored.

Unilaterally off-center from the inside to the outside in a first vertical plane of the support arm and the tie rod, in a second vertical plane, the support, the handlebar, the lifting cylinder, the rocker, the drawbar and the balance carriage with tilt cylinder and lever and in a third vertical plane arranged the connecting rod. The tie rods and the adjustment lever can each be arranged twice, symmetrically to the associated vertical plane.

Upon actuation of the lift cylinder, the main kinematic system, which is designed as a four-link chain transmission, set in motion. By extending the piston rod describes the handlebar about its pivot point provided in the support a circular movement. Due to the dimensioning of the support arm, in particular the lengths of its front and rear Tragarmabschnittes, the fork carriage, which is pivotally connected to the front free end of the support arm, moves in a vertical path upward. The Geienkpunkt, which connects the arm to the fork carriage, in this case has a constant horizontal distance from the hinge point in which the handlebar is mounted on the support.