DE6919371U - DEVICE FOR LOCKING THE PLATFORM OF A FOUR-POST LIFT FOR VEHICLES IN A HORIZONTAL LEVEL - Google Patents

Description

CECCATO & C. S.p.A., Alte Ceccato (Vicenza), Italy

"Device to. The platform of a four-post lift for vehicles in a horizontal plane lock"

The present application relates to a device to lock the platform of a four-post lift for vehicles in a horizontal plane. Through the composition and design of its parts makes this device special Usage properties · on.

In other patents of the applicant it was suggested that the lift - after it has reached its end position or when it is released or breakage of the load-bearing parts - to be locked with a wedge, this K <= il via one connected to the lifting platform ■ jT: ~ '-: r, ° i ~ th surface rleit ^ t and into one on the fixed framework

the lifting device engages positively connected part. I.

This solution ensures a safe and effective locking ^! ;

the lift, but in certain cases the:

Stage - despite the immediate engagement of the wedges - not I.

be stopped in an exactly horizontal position, in particular:

especially because of the different distribution of the ■ Lifting platform with its own weight (motor vehicle).

For some inspection work (e.g. checking the wheel track, adjusting the headlights, etc.) the lift must be used during must be exactly level when carrying out the work.

The present invention provides a locking device for lifting platforms, which enables an exactly horizontal locking of the Stage itself guaranteed.

The locking device according to the present innovation consists essentially of arranged in each corner of the stage Positioning parts that engage in corresponding recesses that are in fixed and non-positive locking with the lifting platform frame ± g connected elements are located, with all solid elements are arranged at the same height.

- 3 -

, 0 1 0 2 7

A preferred embodiment of the locking device according to the present innovation is - as a pure example and without any restrictive effect - shown schematically in the accompanying drawing.

As a simplification and for better understanding, only one device with the associated fixed device is shown in the drawing Element of a four-column lift shown because the locking devices provided for the other three columns exactly match the first.

In this drawing, the fixed element 1 is shown, on the surface i ^{1 of which} a conventional safety device consisting of the wedge-shaped part 2 engages. This part 2 is pulled up by the fork 3 by the action of a spring, not shown, when the support cable M - on which the wheel 5 rests - loses its tension or breaks. During its upward movement, the wedge 2 is pressed by the inclined surface b so that its knurled side ^{engages in the surface I 1 of} the fixed element, whereby the stage is locked.

On the surface 1 'of the fixed element 1, the notches or cavities 7 are cut out, into which the angle 8 articulated in FIG.

-H-

engages. The articulation point 9 is on the corner of the stage not shown or its height. The angle 8 is permanently in its rest position (illustration with uninterrupted Line in the drawing) is held by a spring 10 built into the cylinder / piston assembly 11. To the angle 8 of to bring the rest into the working position (shown hatched in the drawing) and its engagement in one of the To effect notches 7, a pressurized fluid is passed through line 12 into chamber 13 of cylinder / piston assembly 11 guided. This fluid presses the piston against the force of the spring 10 in the direction indicated by the arrow J_ and causes thus the rod IU, which is fastened on the one hand to the piston 11 'and, on the other hand, is articulated to the angle 8 itself Movement of the angle 8. The angle 8 is brought into the rest position by the force of the spring 10 acting on the piston 11 ' brought back when the pressure in the chamber 13 of the assembly Cylinder / piston has dropped to a certain value.

The four devices - one device for each fixed element - are operated simultaneously, the different ones Cylinder / piston assemblies must therefore be connected to one another by a corresponding circle, which ensures that the fluid under pressure in all_ chambers at the same time IU is guided or let out of these.

In .'er described scheme shown in the drawing Embodiment is the engagement of the wedge on a surface and the intervention of the / JinVels on the other surface of the fixed element is provided, however of course possible, the engagement of two wedges in the two opposite faces of the fixed Provide element or the engagement of the angle in one of the sides of this element.

Protection claims

691937

Claims (1)

Protection claims: ι / ' 1. Device to lock the platform of a four- post lift for vehicles in a horizontal plane, thereby geken nzeich that in every corner - or at the height of the stage there are locking elements that engage in cavities in the corresponding fixed elements that are non-positively connected to the lifting platform structure have been left out, with all fixed elements being at the same height. 2. Device according to claim 1, characterized in that devices are provided which ensure simultaneous actuation of all locking elements. 3. Apparatus according to claim 1, characterized in that the Au.olidiluiig, cu preferably consist of m notches recessed in the respective fcsLcu elements, the lower edges of all notches recessed in the fixed elements being at the same height. 4. Apparatus according to claim 1, characterized in that the locking devices preferably consist of angles hinged to the groyne in each corner - or at the same height, where the. * = '? Angle at the same time from the Fui.e - into the Working position are operated so that they engage in the corresponding cavities. . Device rem-lß claim 2, characterized in that the devices for the simultaneous actuation of the individual locking elements preferably consist of a pneumatically or hydraulically actuated cylinder / piston assembly. 6. Device according to claims 2 and 5, characterized in that each Arretxerorgan is held by a spring in the rest position. 7. Device according to claims 2, 5 and 6, characterized in that each Arretxerorgan in its Arbeitsb ".:. Engaging position in the associated cavity is brought by pneumatic or hydraulic pressure in the corresponding cylinder / piston assembly, this pressure against the force of the spring acts.