HK1211010B - Maintenance method for a lift - Google Patents

Description

Maintenance method for elevator

Technical Field

The invention relates to a maintenance method for an elevator, in particular to the case of elevator maintenance in a high-rise building.

Background

Buildings with a very high building height can be understood as buildings from 30 floors onwards and beyond. In such very tall buildings, the installation of the elevator is relatively cumbersome. For the installation, special methods and auxiliary mechanisms are usually provided, whereby the installation can be performed efficiently in time.

US2010/0133048 a1 shows, for example, an installation method for an elevator in a high-rise building, in which method a movable installation platform is utilized. At the beginning of the installation method, the installation platform is positioned in the region of the shaft pit. The elevator components are then brought to the mounting platform, from which they are fitted in the vertical shaft area. Here, the mounting method is provided as follows: the mounting platform is moved into the different assembly positions in an elevated manner by means of the lifting device until the mounting platform reaches the uppermost or final assembly position. Finally, the mounting platform itself serves at least as part of the structure of the elevator car.

The advantage of the mounting method is not only the efficient mode of operation, but also the optimal exploitation of the existing structure during mounting, by: the mounting platform or at least a part of it is constructed in the later formed elevator car.

Disclosure of Invention

The object of the invention is to expand the elevator components previously used in the installation method to be used later in the elevator, in particular also for maintenance purposes.

The object is achieved by a maintenance method having the following steps:

an access platform is provided in the lower driving area of the elevator, in particular in the shaft pit, for later maintenance work, wherein the access platform was previously fitted for installation purposes on at least one pair of car guide rails and is used as a working platform for fitting elevator components to a structure bounding the driving area, in particular the shaft wall.

The advantage of the described maintenance method is that the previously utilized mounting platform can also be used as a service platform for maintenance purposes. In particular the service platform can be double utilized. This not only enables an optimized utilization of the service platform itself, but also an optimized time course of the previous installation method and of the maintenance method itself, since the installation platform can be provided for new use without complex retrofitting work.

It is particularly advantageous if the access platform is already guided on the car guide rails. In this case, the service platform can be provided at defined positions in the lower driving area of the elevator and give clear spatial edge conditions for normal operation of the elevator. In addition, the service platform can be quickly used below the elevator car for maintenance work and can be reliably moved by virtue of reliable guidance on the car guide rails.

Other steps of the maintenance method involve: the service platform is suspended to the elevator car and moved into a service position by means of a drive of the elevator car. It is particularly advantageous that the service platform can be moved by means of an already existing drive.

A further step of the maintenance method involves suspending the service platform from the elevator car by means of at least one connecting element, wherein the connecting element comprises at least one of the following elements: a chain, cable, rope, belt, or tow bar. By means of such a connecting element, the service platform can be coupled to the elevator car particularly simply and reliably. In this case, connection points for the connecting elements are provided on the underside of the elevator car and on the service platform, at which connection points the connecting elements can be hooked, clamped, snapped in or screwed in, for example.

Preferably, the connecting element is designed in a manner adapted to the service platform.

Another step of the maintenance method involves: the ceiling structure is removed from the access platform before the access platform is provided in the lower driving area, and/or the guide extension is removed from the access platform before the access platform is provided in the lower driving area. The ceiling construction provides protection against falling objects during installation and is no longer required during maintenance work, in particular because the elevator car already provides adequate protection. The guide extension guides the guiding force into the region of the fitted car guide rail that is better anchored during installation of the car guide rail. The guide extension is also no longer required during maintenance work. It is advantageous here that: less space is provided in the lower driving area for the provision of an inspection platform.

Drawings

The maintenance method is further explained with the aid of further embodiments and figures. Wherein:

fig. 1 shows an elevator shaft with a service platform for installation purposes;

fig. 2 presents an elevator in the elevator shaft in fig. 1 with an access platform provided in the shaft pit;

fig. 3 presents the elevator according to fig. 2 in service work with an access platform suspended on the elevator car; and

figure 4 illustrates an embodiment of an access platform.

Detailed Description

Fig. 1 shows a shaft 1 of a building having a plurality of floors 2.1, 2.2, 2.n during elevator installation.

In the upper region of the shaft 3 at the level of the uppermost storey 2.n, the support 12 is fitted obliquely into the shaft 1. The first end (here the left end) of the bracket 12 is supported in an articulated manner on the bottom of the uppermost floor 2.n, and the second end (here the right end) opposite the first end rests on a side wall of the shaft 1.

The support 12 has a suspension point for the lifting device. The suspension point can be designed, for example, as an eyelet. The lifting device comprises at least one support means 13, such as a cable, and a drive device 14, which can be moved along the support means 13 in a self-driven manner. The support means 13 can be simply hooked by means of hooks at the suspension points of the support 12.

Further, the mounting platform 51 is movably fitted on the car guide rail 31. The installation platform 51 serves during elevator installation as a working platform which can be moved along the already rigged car guide rails 31 and from which the rigger can rigg the elevator components in the region of the shaft 1. For this purpose, the mounting platform 51 is connected on its underside to the drive 14. This connection can be realized, for example, simply and reliably by means of a screw connection. The mounting platform 51 in the embodiment shown comprises three sub-modules, namely: a base platform 52 with guard rails 53 defining a standing surface for the base platform 52, a guide extension 55, and a ceiling structure 54. The guide extension 55 can be fitted to the base platform 52 and guide the guiding force into a more stable area of the lower part of the car guide rails 31, 32. This achieves that: the service platform 51 is moved into the highest possible working position. The ceiling structure 54 ultimately provides protection for the assembler from falling objects.

Fig. 2 shows the elevator completed with the installation. The elevator comprises at least one elevator car 10 and a counterweight 9 for balancing the force of gravity. For this purpose, the elevator car 10 and the counterweight 9 are suspended at one end of the traction means 5 with a suspension ratio of 1: 1, respectively. The traction means 5 is operated in the upper region 3 of the shaft 1 at least by means of a traction wheel 6, which is operatively connected or operatively connected to a drive 7, and by means of a deflecting roller 8. The elevator car 10 can be moved to the floors 2.1, 2.2, 2.n by means of the drive 7.

In addition, a mounting platform that is changed in function to the service platform 51 is shown in fig. 2. The service platform 51 comprises at least a base platform 52 and a guardrail 53. In this case, the ceiling structure 54 and the guide extension 55 are removed before the service platform 51 is provided. An access platform 51 is finally provided in the lower travel area 4 of the elevator, in particular in the shaft pit 4, for later maintenance work.

Fig. 3 shows the service platform 51 as it is suspended from the elevator car 10 by means of the connecting elements 58.1, 58.2. Suitable as connecting elements 58.1, 58.2 are chains, cables, ropes, belts or pull rods. In order to be able to suspend the service platform 51 on the elevator car 10 in a simple and reliable manner, the connection points 11.1, 11.2 and 50.1, 50.2 are arranged on the underside of the elevator car 10 and also on the inspection platform 51. A connecting element 58.1, 58.2 can be hooked, clipped, snapped in or screwed onto the connection points 11.1, 11.2 and 50.1, 50.2, respectively. Preferably, four connecting elements 58.1, 58.2 are provided in the edge region of the service platform 51, so that the service platform 51 provides a safe standing for the service technician.

The access platform 51 can be moved into different maintenance positions by means of the drive 7 of the elevator car 10 in order to perform maintenance on elevator components accessible below the elevator car 10 at different heights of the shaft 1. For example, the guide rail 31, the counterweight 9, the shaft door, the electrical device, the sensor, etc. can be serviced from the service platform 51.

Figure 4 illustrates one embodiment of an access platform 51. The service platform 51 comprises a base platform 52 and a guardrail 53. The ceiling structure 54 and the guide extension 55 with the guide element 57 are removed from the mounting platform before the service platform 51 is provided. The guidance of the service platform 51 on the car guide rail 31 is ensured by the guide element 56. The guide elements 56, 57 shown here are designed as sliding guide shoes.

Claims (5)

1. A maintenance method for an elevator, having the steps of:

providing an access platform (51) in the shaft pit (4) of the elevator for later maintenance work, wherein the access platform (51) was previously fitted for installation purposes on at least one pair of car guide rails (31) and serves as a work platform used for fitting elevator components to the structure delimiting the driving area (1),

suspending the service platform (51) to an elevator car (10), and

the service platform (51) is moved into a service position by means of a drive (7) of the elevator car (10).

2. The maintenance method according to claim 1, further having the steps of:

suspending the service platform (51) on the elevator car (10) by means of at least one connecting element (58.1, 58.2), wherein the connecting element comprises at least one of the following elements: a chain, cable, rope, belt, or tow bar.

3. The maintenance method according to claim 1, further having the steps of:

-removing the ceiling structure (54) from the service platform (51) before providing the service platform (51) in the lower driving area (3).

4. The maintenance method according to claim 1, further having the steps of:

-removing the guide extension (55) from the service platform (51) before providing the service platform (51) in the lower driving area (3).

5. The maintenance method according to claim 1, wherein the structure delimiting the driving area (1) is a shaft wall.