DD211329A1 - LIFTING DEVICE FOR SMALL HUB - Google Patents

Abstract

The use of this lifting device is suitable for lifting, for assembly, for maintenance processes and in case of accidents. Crane systems u. Rail-bound vehicles with low ground clearance (rail and force application point) with high safety. Large loads, which are located on narrow footprints and can not be hit by a load-bearing means due to low ground clearance, can be moved with it. The lifting device can be used in all positions (horizontal, vertical, schraeg). The aim and task is to realize a lifting device, which is suitable, by the direct use without physical effort and technical effort while high security to lift large loads with low ground clearance. According to Figure 1, the lifting device consists of a reciprocating piston (1) with a groove (11), at the lower end of which a flange (2) is assigned, in a cover flange (4) sits and a membrane (6) between the inner Support surface of a bottom pressure plate (3) and the cover flange (4) is fixed and via the flange (2) with the reciprocating piston (1) is in operative connection.

Description

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TITLE OF THE INVENTION Small lift hoist. Field of the invention

The invention "relates to a lifting device for small stroke, consisting of a fillable chamber» control valves and a working cylinder.

She is suitable zxxm. Lifting, mounting and maintenance latching of cranes and rail vehicles with low ground clearance (rail and force application point) with high safety, their use is also advantageous where large loads are on narrow footprints and low ground clearance, the load handler is not recognized. Furthermore, it is suitable for use in assembly and maintenance processes, in which "drots low installation and construction freedom, in horizontal, vertical and oblique position force effects are required ·

Characteristic of the known technical solutions

There is known a load-carrying device in the porm of an air-cushion lifting device, in which inflatable

t.

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Cushion with inflatable chambers are used and controlled by control valves · The disadvantage of this air cushion lifting device is that at large loads, a large contact surface is necessary. Furthermore, they require large pressure medium. In case of damage to the control system and air cushion, there is no security against lowering the load. The use of other pressure medium except air is not possible.

Information Source: BED - OS 29 00 353 Int.-Cl .: B 66 F, 19/00

"Air cushion lifting device"

Furthermore, a "fluid-operated jack, in particular jack" is known in which a closed inflatable hollow body as a lifting member and two solid base plates on the front sides, which serve to lift the load, are used.

^ The disadvantage is in the lifting of small loads, due to low pressures and the elastic side wall, to see *

Source of information: BED - OS 17 56 286

Int. Cl .: B 66 f, 3/34 nat. Cl: 35 d, 3/34 "Pressure-operated jack, in particular jack"

Furthermore, there is a BED-Offenlegungsschrift, in the large-scale heavy loads using pressure pads as lifting elements that carry the loads separately and can also be connected to each other via pressure medium lines, lifted and moved.

Their disadvantage is that for large loads a large

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Support surface is required and there is little security against lowering the loads in case of damage to the pressure pad. Furthermore, a large force surface is necessary. manoeuvrable. To operate the system, a pump is always in use 25 to provide large quantities of pressure medium. The use of the pressure medium can not be made variable.

Informationsourceί BED - OS 19 52 365 Int.-Gl.ί B 66 f, 11/00

nat. Cl: 35 d, 11/00 "support device for large-scale heavy components, structures or the like."

Object of the invention

The aim of the invention is to achieve a lifting device for small stroke, which is suitable to raise by the direct use of the lifting crane equipment and rail vehicles of high weight without high technical effort and physical effort while maintaining high security, with the low freedom between force application point and rail or, even earth and the high dead weight must be considered,

Furthermore, the goal of this inventive solution, a need that exists since the construction of cranes larger weight with low ground clearance to 4-0 mm, to satisfy by these crane systems in maintenance processes and Häwarien in place without technical effort and with little time to be able to lift.

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Explanation of the essence of the invention

The invention has for its object to provide a lifting device for small stroke, which corresponds in size to the small height and the available support surface and the required compressive force for lifting the heavy loads and ensures high security against unintentional lowering of the loads.

According to the invention the object is achieved in that a reciprocating piston with a groove, at the lower end of which a splashing is assigned sitting in a cover flange, and a membrane which is secured between the inner bearing surfaces of a bottom pressure plate and the cover flange, and a planter with the reciprocating piston is in operative connection.

The groove is provided for receiving a fuse, the bottom pressure plate is for pulling the pressure chamber by means of pressure means a check valve and an inlet channel and associated with the lowering of the reciprocating piston, an outlet channel with ball valve.

The puncture of the inventive solution is characterized in that when the pressure medium is supplied to the pressure chamber, the membrane is lifted from the bottom pressure plate and this presses the reciprocating piston from the cover flange, After the hutch is extended to the stop, is in the outstanding over the cover flange groove De Hufokolbens used a fuse. Then the pressure chamber is vented via the ball valve and the hoist is depressurised *

To lower the load of the reciprocating piston is again lifted by a pressure medium, which is printed in the pressure chamber over the membrane and the fuse removed from the groove of the reciprocating piston. By draining the pressure medium over

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the ball valve is pushed through, the force of the reciprocating piston acting on the reciprocating piston into the cavity of the lifting device ·

The design of this lifting device can be used for large loads with low ground clearance with a small force application surface. Furthermore, you need a small force dissipation area.

The direction of action of the lifting device is variably applicable (horizontal, vertical or oblique), wherein the reciprocating works in the respective direction of action.

Due to the low weight of the lifting device and its high safety when holding the load, it can be used universally during assembly and maintenance processes. The Pertigungsauf wall is inexpensive due to the small number of items and the low mechanical processing.

The lifting device is robust, subject to low wear, needs despite increased dirt conditions when using a low maintenance, is easy to operate and requires no sealing elements for the reciprocating piston. Furthermore, there is an advantage in the adjustment of the reciprocating piston with non-parallel force application and discharge surface, in the consumption of energy and in the variable use of gaseous or liquid pressure media.

embodiment

The invention will be described below with reference to the accompanying drawings

Pig. 1 representation of the appropriate design of the lifting device in a depressurized state

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Fig. 2 representation of the functional design of the lifting device under pressure

explained.

The illustrated in Fig. 1 solution of a lifting device for small stroke consists of a reciprocating piston 1 with a flange 2, a bottom pressure plate 3, which is firmly connected to a cover flange 4. A cavity 5 is enclosed by the bottom pressure plate 3 and the cover flange 4. "Between the cover flange 4 and the bottom pressure plate 3 is a diaphragm 6 which is held by the inner bearing surfaces of the bottom pressure plate 3 and the cover flange. The reciprocating piston 1 is guided by the cover flange 4. In the bottom pressure plate 3 there is an inlet channel 7 "which is associated with a check valve and an outlet channel, 9" at the end of a ball valve is attached «

Via the check valve 8 and the inlet channel 7, the lifting device is pressurized by means of pressure. Through the outlet channel 9 and the ball valve 10, the pressure chamber is relaxed

 In the unpressurized state, the diaphragm 6 abuts the inside of the bottom pressure plate 3, and the reciprocating piston 1 is seated, its own weight with the flange 2 on the diaphragm 6, wherein a groove 11 of the reciprocating piston 1 is located in the cavity 5.

In Fig. 2, the lifting device for small stroke is shown under pressure in such a way that, after the pressure medium via the inlet channel 7 between the bottom pressure plate 3 and the diaphragm 6 enters, a pressure chamber 12 forms j, the diaphragm 6 the reciprocating piston 1 to pressed to the stop of the flange 2 with the cover flange 4 from the cavity 5 The cavity 5 is displaced by the diaphragm 6 «If the reciprocating piston 1 to the

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Stop is extended, then a fuse 15 is inserted into the two grooves of the Hubkorbens 1. About the ball valve 10, the pressure chamber 12 can be relaxed · The reciprocating piston 1 remains in the working position by the securing tongs 13.

To lower the reciprocating piston 1, the lifting device is pressurized with the pressure medium via the inlet channel 7 so that the fuse 13 can be removed from the groove 11. Subsequently, the pressure medium supply is interrupted and the pressure chamber 12 is expanded by the ball valve. The diaphragm 6 displaced by the pressure of the reciprocating piston 1, the pressure chamber 12, and it forms the cavity 5 above the diaphragm 6, in which simultaneously the reciprocating piston 1 is sunk,

Claims (3)

236 52 3 8. invention claim 1 * Lifting device for small stroke, consisting of a fillable chamber, control valves and a working cylinder, characterized in that · a reciprocating piston (1) with a groove (11), at the lower end of a planter (2) is assigned, in a cover flange (4) sits and a membrane (6) which is fixed between the inner bearing surfaces of a bottom pressure plate (3) and the cover flange (4) and on the planch (2) with the reciprocating piston (1) in operative connection » 2 «, lifting device for small stroke according to item 1, characterized in that the groove (11) has a fuse (13) takes up,. 3 * Lifting device for small stroke after point 1 and point 2 _? characterized in that the bottom pressure plate (3) is associated with a check valve (8), an inlet channel (7), an outlet channel (9) and a ball valve (10). , , .Ζ ''. ' , · \ HERE TO 2 PAGES DRAWINGS!