FI67830B - LASTHANTERINGSDON MED AV PARALLELLOGRAMLAENKAR UPPBYGGT LYFTARMSSYSTEM - Google Patents

Description

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c (45) pr "y J '6 (51) Kv.lk.4 / lnt.CI. * B 66 C 23/14 (21) Patent application - Patentansökning 773270 (22) Filing date - Ansökningsdag 01.11.77 (H) ( 23) Starting date - Giltlghetsdag 01.11.77 (41) Has become public - Blivit offentlig 13.05.78

National Board of Patents and Registration (44) Date of publication and date of publication. -.

Patent- och registerstyrelsen '' Ansökan utlagd och utl.skriften publicerad 28.02.85 (32) (33) (31) Pyydetty etuoikeus - Begärd priority 12.11.76

Sweden-Sweden (SE) 7612678-8 (71) (72) Knut Olov Frisk, N. Gävlevägen 41, 810 40 Hedesunda, Sweden-Sweden (SE) (74) Forssen S Salomaa Oy (54) Cargo handling equipment with parallelepiped arms lifting arm system - Lasthanteringsdon med av parallellogramlänkar uppbyggt lyft-armssystem

The invention relates to a cargo handling device having a lifting arm system constructed of parallelepiped arms, supported by a frame comprising two vertical, side-by-side frame plates, and in which two articulated points of the arms or parts connected to the arms are guided, one vertical and the other the handling arm and its load-bearing end receive a vertical and horizontal movement proportional to the corresponding movement of the above joints or parts, the load handling device being provided with adjustable stop or limit positioning means which allow the handling arm to be easily and repeatedly placed in certain repetitive handling positions.

2,67830

Such load handling devices are often used as a device to strengthen the hand or arm of the worker or staff member concerned, which enables, for example, a very precise movement of the workpiece relative to the machine or tool. This is important in that similar workpieces can be transferred to a machining tool, for example. The cargo handling device may then be instructed to perform repetitive movements of the load-bearing end of the handling arm between two predetermined, returning stations during that time.

Swedish patent publication 379 332 discloses a cargo handling device, which, however, is very complexly constructed and is both expensive to manufacture and difficult to maintain. The handling device is equipped with limit switches, which makes it possible to determine the different positions between which the handling arm automatically transfers the load. Unlike such cargo handling devices, the object of the invention is to provide a much simpler mechanical stopping or locking device.

Swedish Pat. In addition, the cargo handling device is of a different type than that of the present invention.

In addition, a similar device is known from U.S. Pat. No. 3,402,911, the body of which has two pins in the same vertical slot. When installed here, the stop device is limited by the movement to a distance smaller than the distance between the pivots.

Against this background, it is a further object of the invention to facilitate the positioning of the handling arm and its load when moving between two predetermined, continuously repetitive but adjustable positions.

This is achieved by the claimed invention. The invention is characterized in that the movable stop or limit positioning members, which can be locked in the desired positions, are arranged in slots in the body plate, which slots extend along the guide members formed by the rails 3 67830 in parallel therewith. In this way a very simple mechanical stop or locking device is achieved.

According to one embodiment, one or both articulation points or parts connected thereto are mechanically connected to a support member which is a rail supported by brackets projecting through the slot, said support member following movement of the articulation point or part, said support member or rail adjustably supporting limit position members or their actuating members. .

According to another preferred embodiment, the adjustable limit positioning members or their acting members consist of sliders with a locking cam which can be locked to the support member or support rail by means of a screw device.

The invention will now be described in more detail with reference to the accompanying drawing, which schematically shows a cargo handling device and a frame plate supporting it.

In the embodiment shown, the lifting arm lift system consists of a handling arm 1 supporting a drive head 2 and a drive arm 3 arranged therein, which is required to electrically and / or hydraulically control a hydraulic system (not shown) for controlling an engine made as a hydraulic cylinder 4. The piston rod of the hydraulic cylinder acts on a part 6 connected to the articulation point 5 of the parallelogram arms, the end 7 of which is thought to be guided between two guide rails 8,9. Along the guide rails 8 and 9 and parallel to them, a slot 11 is made in the frame plate 10, from which a protruding member arranged at the end 7 of the part 6 protrudes through the slot 11, which is a rail 26 supported by one or more supports. 13, the cam members 14,15 are arranged in a lockable manner, by means of which the limit position switches 16,17 can be actuated. In this way, depending on the positioning of the cam members 14, 15 on the rail 11, a precisely defined movement can be obtained on the treatment arm 2 between two predetermined repeating positions.

In the same way, the articulation point 18 is guided between the guide rails 19,20 and in connection with these rails a gap 21 parallel to the rails 19,20 is made in the body plate 10, through which the limit positioning members 22,23 are inserted, 4 67830 so that they can enter the articulation point 18, when this is moved by the action arm. These limit positioning members can be releasably set to the desired positions along the slot 21 by means of the wing nuts 24,25, so that the movement of the hinge point 18 can be limited by these limit positions. As a result, also in this case a positioning arrangement is obtained for a limited area, which can provide the necessary control for the precise movement of the processing arm 1 between two defined, repetitive processing positions.

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Although the invention has been described in connection with this embodiment, it may, however, vary as desired within the scope of the following claims.

Claims (2)

5,67830 A cargo handling device having a lifting arm system constructed from parallelograms, supported by a frame comprising two vertical, side-by-side frame plates (10), and in which two of the arm articulation points (5,18) or parts connected to the arms (6, 7) are guided; vertically and repeated horizontally by means of rails (8, 9, 19, 20) arranged between the frame plates (10), whereby the handling arm (1) of the load handling device and its load-bearing end (2) receive a vertical and horizontal movement proportional to the above-mentioned joints ( 5,18) or parts (6,7), the load handling device being provided with adjustable stop or limit positioning members (14-17; 22,23) which allow the handling arm (1) to be easily and repeatedly placed in certain repetitive hands. position, characterized in that the movable stop or limit positioning members (14,15,16,17; 22,23) which can be locked in the desired positions are arranged in the body plate (10). n slots (11,21) extending along the guide members formed by the rails (8,9; 19,20) parallel to them. Cargo handling device according to claim 1, characterized in that one or both articulation points (5,18) or parts (7) connected thereto are mechanically connected to a support member which is a rail (26) supported by brackets projecting through the gap (11,21), thus that said support member follows the movement of the hinge point (5,18) or part (7), said support member or rail (26) being adjustably supporting the limit positioning members (16,17) or their acting members (14,15). Cargo handling device according to Claim 2, characterized in that the adjustable limit positioning elements (16, 17; 22, 23) or their actuating means are formed by a locking device (12, 13; 24, 25) which can be locked to the support element or support rail (26) , 15) equipped sliders.