GR1009066B - Hydraulic elevator converted into electromechanical via electromechanical interventions - Google Patents

Abstract

The invention relates to the conversion of a hydraulic elevator into a new-technology electromechanical elevator upon removal of the existing piston, pulley and wire ropes, and installation - at the same space- of new counterweight guides, counterweights, a base for the drive mechanism, a motor, and wire ropes. The benefits of this change are: reduction of the whole cost and time needed for the elevator’s reconstruction, reduction of the energy required for the operation of the elevator, smoother operation of this last and renewal of its service life duration (see fig. 1,2).

Description

Title

Method of converting a Hydraulic Elevator into an Electromechanical one by applying electromechanical interventions.

Technical Field of Reference

The invention refers to the method of converting a hydraulic elevator, of any technology, with or without engine room space and components, into an electromechanical friction elevator, direct or indirect transmission relationship with the application of electromechanical interventions and the use of a Gearless PMSM type motor (Permanent Magnet Synchronous Motor magnet without Reducer).

State of the Art

Until now, for the conversion of a hydraulic elevator to an electromechanical one, all the mechanical and electrical elements and components of the previous installation had to be completely dismantled, with the only possible preservation of the shaft doors.

Benefit of Invention

The invention with its application can be used as a method of renovating a hydraulic lift with the following advantages:

Reduction of costs and reconstruction time, especially in elevators that have completed their life cycle.

With this invention there is the possibility of maintaining the most important part of the existing installation and more specifically:

• The drivers of the chamber

· The frame of the chamber

• Of the chamber

• The doors of the well

In special cases, the electrical installation can also be maintained.

Reduced energy requirements.

With mechanical interventions in the existing construction, the placement of a high energy efficiency motor and the use of counterweights, the result is: • Requirement of reduced starting currents

• Increasing the operating speed of the chamber

· Reduced power consumption of the entire installation

• Avoidance of energy consumption, which is required by iron recycling, in the event that the equipment was removed in its entirety

Smoother and more accurate operation.

With the possibility of using a WVF (variable voltage variable frequency) electronic speed regulator to control the motor, smoother operation of the elevator and more accurate leveling of the cabins on the floors results.

Release of the engine room

With mechanical interventions in the pre-existing construction, it is possible to place the engine outside the engine room and inside the shaft, or the possibility to place the control panel outside the engine room and on any floor next to the shaft or even at a great distance using an intercom system.

Reduced cost of Maintenance - Spare parts

• For the work performed by the engine - pump - valve block - piston - piping now only the engine is used.

• Abolition of lubricating hydraulic systems and benefit initially financial, for their acquisition or recycling and finally environmental, taking into account that the absolute largest percentage of their weight is non-biodegradable, and their disposal in natural systems is dangerous.

Disclosure of the Invention

In order to better understand the invention, we illustrate in the following Figures: Fig. 1: Layout of a hydraulic elevator well in the original state before the conversion.

Fig. 2: Lift shaft layout after conversion (1:1 suspension)

Fig. 3: Help diagram of a 1:1 direct suspension elevator for the moving parts

Fig. 4: Auxiliary 2:1 Indirect Suspension Elevator Diagram for Moving Parts

More specifically for the invention:

We remove the piston Fig.1 (1) together with the wires Fig.1 (2) and the pulley Fig.1 (3) and thus create the necessary space for the new additions.

Place the counterweight guides Fig. 2 (4) between the chamber guides Fig. 2 (10)

At the upper end of the chamber guides Fig.2 (10) we place a metal base Fig.2 (6), on which we will base the drive mechanism Fig.2 (7)

Place the new wires Fig. 2 (8), which are nailed onto the counterweight frame Fig. 2 (5) and at their other end onto the chamber frame Fig. 2 (9).

Then we have two cases regarding the suspension of the moving parts:

1:1 Direct Mount Case Fig. 3

The motor (11) is located on the base of (12)

The wire ropes (13) are placed, guided and anchored on the chamber (14) and the counterweight (15).

Case of Indirect suspension 2:1 Fig. 4

From the motor (17) the cables (16) descend from one side to the counterweight (18), which carries a pulley (19)

Wire ropes rotate on it and are anchored to the base of the machine (20).

From the other side of the engine, respectively, they go down into the chamber (21), turn on a pulley (22), which is placed in its frame, they also go up and are anchored to the base of the machine (20).

Claims (3)

Main Claim 1. A method of converting the hydraulic elevator into an electromechanical friction direct and indirect suspension by installing new counterweight guides Fig. 2 (4), new counterweight Fig. 2 (5), new drive mechanism Fig. 2 (7) and new wire ropes Fig. 2 (8) in the space created by removing the existing piston Fig.1 (1), pulley Fig.1 (3) and wire ropes Fig.1 (2) of the pre-existing hydraulic lift. Dependent Claims 2. A method of converting the hydraulic elevator to an electromechanical friction direct and indirect suspension within the existing cab guides Fig.2 (10) of the pre-existing hydraulic system by fitting and retaining a pair of new counterweight guides Fig.2 (4) to drive the frame counterweight Fig.2 (5) with the counterweight Fig.2 (5) and placing the base of the machine Fig.2 (6) on the upper end of the guides of the chamber Fig.2 (10). 3. With this method we keep the guides of the chamber Fig. 2 (10), the frame of the chamber Fig. 2 (9), the chamber and the doors of the chamber and well of the pre-existing construction.