SE501258C2 - railcar - Google Patents

Abstract

A trolley (B), which is adapted to be connected to a wheel-mounted loading trolley (A), has idle wheels (2, 2a) on which it can be wheeled by hand, either alone or together with the loading trolley (A). The trolley (B) further has a motor-driven wheel (4). The wheel (4) and the associated motor (3) are fixed to a tube (9) which is vertically displaceable and rotatably mounted in the chassis (13) of the trolley (B). By an operating handle (10), the tube (9) can be vertically displaced in the chassis (13). The operating handle (10) is articulated to the tube (9) and the chassis (13) by means of a dead-centre elbow mechanism (11). In the one stable position of the elbow mechanism (11), the motor-driven wheel (4) has floor contact in order to drive the trollley (B) and the loading trolley (A), if connected thereto. In the other stable position of the elbow mechanism (11), only the idle wheels (2, 2a) of the trolley (B) have floor contact when the trolley (B) is connected to the loading trolley (A).

Description

501 10 15 20 25 30 35 258 2 mechanically interconnectable with truck A for motor drive thereof. The wheel 4 together with its motor 3 can be moved vertically up and down in the motor car B, so that the wheel 4 can be brought into engagement with the floor C, whereby the motor car B and the truck A connected thereto can be motor driven for movement on the floor C (Figs. 2A and 1B, respectively). ), whereby the motor vehicle wheels 2, 2a have no floor contact. In position B and the possibly coupled truck A can be manually slid on the floor C by hand, by means of the wheels 1, 2a, 2 (fig. 1A and 2B respectively) or, in the coupled condition, preferably only by means of the wheels 1 , to reduce the threshold passage of the wheel 4, the motor vehicle is a problem, the carriage B hanging freely on the truck A. As shown in the figures, the wheel 4 is placed at the rear of the motor vehicle B, behind the wheels 2, 2a, so with the wheel 4 in the lower the position, drive position, floor contact can also be obtained with the castors 2a, for driving the motor vehicle B separately.

For said mechanical coupling of the carriages A and B, there are hooks 5 on the motor carriage B and pockets or rods 7, 8 on the carriage A. The hook 5 is hinged and preferably spring-loaded, so that first the hook 6 is brought into engagement with its pocket or rod 7. (after tipping the motor car B clockwise in Figs. 1 and 2), whereupon the hook 5 is brought into engagement with its pocket or rod 8. This coupling principle is also described in EP-B1-0 0 281 536, as well as other coupling arrangements which are also useful here.

Said vertical movement of the wheel 4 and its motor 3 is effected by means of a tube 9 fixedly connected to the wheel 4 and its motor 3, an operating handle 10 and a dead center knee joint mechanism 11 connecting the parts 9 and 10 (see Fig. 3). The operating handle 10 is hingedly connected partly to the tube 9 at 12 and partly to a tube 14 fixedly connected to the chassis 13 (which supports the wheels 2, 2a) by means of a link 15, in which tube 14 the tube 9 is movable up and down and also can be rotated about its longitudinal axis.

The knee joint mechanism 11 is such that for motor drive on flat floor C of the carriage A (all wheels 1, 2, 2A - or only the wheels 1 - allow floor contact) the knee joint mechanism 11 must pass from a position where the handle 10 is vertical, dashed line 10 '(center axis), and the wheels 2, 2a are raised from floor contact, to a position turned 90 °, dashed line 10 ", where the wheels 2, 2a have released the floor contact (pipe 9 vertically), whereby a dead center position must have been passed, as indicated by a dashed link 15. This is so that the will of the operator is effected to achieve the two stable end positions of the drive wheel 4.

Appropriate adjustment of the stroke of the tube 9 can be achieved by arranging the hinge point 16 of the link 15 on the tube 14 on a stop bushing 17 which is displaceable on the tube 14 and fixable in the set height position, which is further rotatable on the tube 14 to allow rotation of the wheel 4. saw that the carriage A can be steered in different directions.

An electrical line 18 running through the tube 9 connects electrical controls 19 on the handle 10 to the motor 3 via control electronics 20 for the motor 3, which may be arranged, among other things, for speed control and reversing of the motor 3. 21 denotes a rechargeable battery and 22 a battery charger, which is charged from a wall socket by a power cord 23.

Claims (3)

501 10 15 20 25 30 35 258 PATENT REQUIREMENTS 1. l. Trolley (B) for coupling with a wheeled truck (A), which trolley (B) has non-driven wheels (2, 2a), on which the trolley can be hand-rolled by itself or in combination with the truck (A), characterized thereof, - that the carriage (B) also has a motor-driven wheel (4), - that this wheel (4) and its motor (3) are attached to a tube (9), - that the tube (9) is upside-down displaceable and rotatably mounted in the chassis (B) of the trolley (B), - that the tube (9) has an operating handle (10) for displacing the tube (9) up or down in the chassis (13), - that the operating handle (10) is articulated to the tube (9) and the chassis (13) by means of a dead center knee joint mechanism (II), the one stable position of the hinge mechanism (11) providing floor contact of said motor-driven wheels (4) for motor-driving the carriage (B ) and the possibly connected truck (A) and - the second stable position provides floor contact with only the drive wheels (2, 2a) of the trailer (B), when the trailer (B) is connected to the truck (A). Trolley according to Claim 1, characterized in that the tube (9) is rotatable in the chassis (13) of the trolley (B). Trolley according to claim 1 or 2, characterized in that its motor-driven wheels (4) are placed so that the trolley (B) is motor-drivable itself on the motor-driven wheel (4) and on at least two (2a) of the driven wheels.