DE1738757U - HYDRAULIC LIFTING EQUIPMENT. - Google Patents

Description

Applicant; Stuttgart, November 5th, 1956

Emil Weber Gm 241 W / Mon

G-üglingen / Württ ₀ Seebergstrasse

Representative ^ patent attorney Diplo-Ing, Max Bunke Stuttgart S Danneckerstrο 7

Hydraulic hoist

The innovation relates to a hydraulic hoist with a lifting cylinder guided on a supported Eohrkolben and with a return spring ₉ arranged inside the tubular piston, one end of which is attached to the cylinder and the other end of which is attached to the piston by means of bent spring eyelets

With hoists of this type, for example, motor vehicles like radio trolleys or workshop trolleys, which are longer Time to be placed in one place. The hoists serve there-ZUp Raise the vehicle to relieve the chassis while it is stationary and to keep the vehicle in a horizontal position to set up vibration-proof

In a known hoist of this type are the two eyelets of the spring in ring-like suspension devices hooked _s which at the-Kolbendeäcel 'respectively provided on the cylinder cover are ο The assembly of this known lifting apparatus is difficult and cumbersome !, because ,, around the cylinder cover on the Unscrew cylinder to M5 female _? The upper spring eyelet of the spring, which is hung with its lower eyelet in the lobe cover, must pull out over the upper edge of the cylinder.

The spring under tension is then hooked into the cylinder cover and the cylinder cover is screwed onto the cylinder under tension. "Since the retraction springs have to be forceful, this work is very arduous, so that often several people or special assembly devices are needed ₀ so that the spring is screwed open of the cylinder _{cover is not also rotated p} the suspension device must be rotatably arranged on at least one of the two covers, which made the construction more expensive

To avoid these disadvantages, there is fire that at least one of the facing ends of the cylinder and / Dder of the Hohrkolbens apart from the cylinder and / or tubular piston tightly closing lids of these independent special components forming fastening means for the return spring arranged sinö _o

In one embodiment of the innovation, the fastening means is designed as a base plate inserted _{in a recess of the cylinder baw D of the piston 9} which is provided with a passage for the pressure fluid and with a suspension device for the tension spring

In a further embodiment, the bottom plate has a passage opening for the spring eye to _see which preferably simultaneously serves as a passage for the pressure fluid, "There is the suspension device consists of a pin _P is inserted into the projecting beyond the bottom plate portion of the spring eyelet ,, after the spring eye by the passage opening of the base plate was pushed through _o

Further features of the innovation emerge from the description; an embodiment shown in the drawing in conjunction with the drawing, and the protection claims »

The drawing shows a longitudinal section through an embodiment of a lifting cylinder _{0 according to the innovation}

A piston .1 is provided at its lower end in the drawing with a powerfully designed piston cover 2, which has to absorb its weight and the lifting force exerted by it during operation of the lifting cylinder 3 screwed onto the piston At the upper end, the piston carries a guide part 4p which is screwed onto it with the interposition of the seal 5. An elastic ring seal 6 is inserted into the guide part at its free end greater than the outside "diameter of the piston _o his guidance to the piston of the cylinder shall once through the guide member 4 ₉ is connected to the piston, and on the other by a guide bush 8, which isto screwed into the cylinder at its lower end, the Cylinder 7 is different by a cover 10 screwed on with the interposition of a seal 9 loosene The interior of the cylinder is connected through a bore 11 arranged in the cover with a threaded connector which was used to connect a supply line for pressure fluid

A return spring 13 is arranged inside the tubular piston 1 _? which ends in a lower spring eye 14 and in an upper spring eye 15. Bottom plate 16 with a slot 17 ₉ through which the lower spring eyelet 14 is pushed through the part of the spring eyelet 14 protruding above the piston head, a pin 18 is pushed through which the spring 13 is attached to the base. 16 'and thus attached to the cattail 1. In the same way, the upper spring eyelet 15 is through the pin 19 with the in a "recess 20 of the Zy =

Claims (3)

Λ - paints Linders 7 arranged base plate 21 and thus connected to the cylinder 7 «claims for protection 1) Hydraulic hoist with a lifting cylinder guided on a supported cattail and a cylinder located inside the cattail? on the one hand to the cylinder and on the other hand to the piston, the return spring is fixed, characterized in that at least one of the facing ends of the cylinder and / or the bulrush apart from the cylinder and / or bulrush tightly closing lids of these / dependent ₉ special components Fasteners for the return spring are arranged » 2) Lifting device according to claim 1, characterized in that the fastening means as in a recess in the cylinder or «piston inserted bottom plate is formed, which with a passage for the pressure fluid and with a A suspension device for the tension spring is provided 3) Lifting device according to claim 2 _S, characterized in that the base plate has a passage opening for the spring eye, which preferably also forms the passage for the pressure fluid, and that the Einiiängevorrichtung consists of a pin which is in the over the base plate part of the through the Through opening guided spring eyelet is pushed in