WO2018166980A1

WO2018166980A1 - Device for protecting persons in an elevator shaft from falling objects

Info

Publication number: WO2018166980A1
Application number: PCT/EP2018/056100
Authority: WO
Inventors: Vishal BHOSALE; Shreyas NAIKADE
Original assignee: Inventio Ag
Priority date: 2017-03-15
Filing date: 2018-03-12
Publication date: 2018-09-20

Abstract

The invention relates to a device (10) for protecting persons in an elevator shaft from falling objects, the device (10) comprising a first telescoping rod (12), which can be fastened to the guide rails (102, 104) of an elevator cab, and a second telescoping rod (42), which is fastened to the first telescoping rod (12). Furthermore, the device (10) has a protective roof (46) for protecting a person standing under the protective roof (46) from falling objects, said protective roof (46) being fastened to the second telescoping rod (42).

Description

Device for protecting persons in an elevator shaft

in front of falling objects

The invention relates to a device for protecting persons in a hoistway from falling objects, wherein the device comprises a protective roof, which protects the persons from the falling objects.

When mounting elevator systems in an elevator shaft and in the maintenance of existing elevator systems, persons must enter the elevator shaft. There is the risk that these persons may be hit by objects falling from higher floors in the elevator shaft and thereby injured. In order to minimize the risk to the elevator mechanics, various devices are known which are intended to catch the falling objects, so that the fitters can not be hit.

The document EP 2 910 511 A1 describes a construction site hoist which comprises a pivotable roof above the cabin, which on the one hand serves to protect persons in the elevator car from falling objects, but on the other hand enables the elevator car to be loaded with high goods in the folded-away state ,

The document EP 2 081 863 A1 discloses a jumper, in which a permanently installed crash deck is provided, which closes the elevator shaft at the top and thus prevents the falling in of objects.

Document CN 204627016 U1 describes a device which, like a tent, can be fixed on the railing of an elevator car and which is intended to protect persons working on the elevator car from falling objects.

The document US Pat. No. 3,934,679 A discloses a forklift truck which has a hinged protective roof over the driver's cab which is intended to protect the driver from falling objects. A disadvantage of all known devices for protecting persons in a lift shaft from falling objects is that the devices are expensive to assemble and can only be used for a given elevator shaft size.

It is an object of the invention to provide a device for protecting people in a hoistway from falling objects that can be used universally in different elevator shaft sizes and that is easy to install. A further object of the invention is to specify a method for fastening such a device in an elevator shaft in an elevator installation, which allows a simple and quick fastening of the device.

This object is achieved by a device having the features of claim 1 and by a method having the features of the independent method claim. Advantageous developments of the invention are specified in the dependent claims.

According to the invention, the device for protecting persons in an elevator shaft from falling objects has a first telescopic rod, which is designed such that its length is adjustable within a predetermined range, and which is designed such that it fits on guide rails of an elevator car, which in the Lift shaft are arranged, can be fastened.

Furthermore, the device has a second telescopic rod which is fastened to the first telescopic rod. Also, this second telescopic rod is formed such that its length can be adjusted in a predetermined range.

At this second telescopic pole a protective cover for the protection of persons standing under the shelter is provided from falling objects. The use of telescopic rods for attaching the canopy offers the advantage that by attaching the first telescopic rod between the rails in the elevator shaft a simple and fast attachment is possible, and on the other hand, that the Längeneinsteilbarkeit the telescopic rods, the device for a variety of different Shaft sizes and dimensions can be used universally.

In a preferred embodiment of the invention, a first fastening unit for fastening the first telescopic rod to a first guide rail of an elevator car and / or at a second end opposite the first end of the first telescopic rod is a second fastening unit for fastening the first telescopic rod at a first end of the first telescopic rod provided on a second guide rail of the elevator car.

The first and / or the second fastening unit are in particular designed such that a contact region, via which they are in contact with the guide rails, is complementary to the geometry of the guide rails, so that a secure fastening of the telescopic rod to the guide rails is possible.

The attachment of the telescopic rod to the guide rails is in particular non-positively by the telescopic rod is adjusted in length such that it is clamped between the guide rails.

In a preferred embodiment of the invention, the first fastening unit has a recess for receiving at least a portion of the first guide rail. This ensures that the guide rail is at least partially enclosed by the first fastening unit and thus slipping transversely to the longitudinal direction of the guide rail is reliably avoided.

Accordingly, in particular, the second fastening unit has a recess for receiving at least a portion of the second guide rail. Furthermore, it is advantageous if the first fastening unit and / or the second fastening unit each have a spring-mounted pin. This pin is particularly complementary to provided in the guide rails holes formed and thus engages when the fastening unit is positioned so that the pin is disposed in the region of one of these holes, in this hole. In this case, the pin is moved in particular by its storage via at least one spring into the hole. By this engagement of the pins in the holes a secure attachment of the first telescopic rod is achieved on the guide rails. In particular, this avoids that the first telescopic rod in the direction of the longitudinal direction of the guide rails can slip on this. In particular, locking units are provided which allow locking of the pins in the position in which they engage in the holes, so that an automatic unintentional release of the pins from the holes is avoided.

Further, it is advantageous if the second telescopic rod is connected via a hinge in such a way with the first telescopic rod, that the second telescopic rod is pivotable about an axis of rotation relative to the first telescopic rod. This axis of rotation is aligned parallel to the longitudinal direction of the guide rails, in particular when the device is fastened to the guide rails as intended. In this way it is achieved that the second telescopic rod and hereby the protective roof attached to the second telescopic rod can be adjusted in its position such that it is arranged above the working area of the person working in the elevator shaft. In addition, as a result, the protective roof must not be designed so that it covers the entire surface of the shaft, but must cover only a portion, since the position is variably adjustable. In particular, this achieves the result that the protective roof can be formed significantly smaller relative to the cross-sectional area of the elevator shaft, as a result of which the protective roof can be transported more easily. Furthermore, the installation of the device in the elevator shaft is simplified by a correspondingly small protective roof.

It is particularly advantageous if the protective roof is mounted in the longitudinal direction of the second telescopic rod displaceable on the second telescopic rod. As a result, the advantage is achieved that the position of the canopy within the elevator shaft can be adjusted even more variable to the respective position of the person. This displacement in the longitudinal direction of the second telescopic rod is in particular achieved in that in the second telescopic rod an elongated hole is provided, in which the protective cover in the longitudinal direction of the elongated hole displaceable, in particular via lockable screws, is mounted.

Further, it is advantageous if the second telescopic rod is attached to the first telescopic rod and / or the protective roof on the second telescopic rod in each case via a detachable and recoverable attachment. This ensures that the device can be set up and taken down as often as desired and thus can be transported from one elevator installation to another.

A releasable and recoverable connection is understood in particular to mean that the connection can be released and restored without destroying the components or destroying connecting parts.

The detachable and recoverable connection is formed in particular by screws.

Furthermore, it is advantageous if the protective roof has a plurality of sub-elements, so that the size of the parts to be transported is reduced. The individual sub-elements are connected to one another in particular so as to be displaceable relative to one another so that the protective roof can be pulled apart and pulled together, similar to a telescope.

In an alternative embodiment of the invention, the individual sub-elements of the canopy can also be connected to each other such that the canopy can be folded together and unfolded.

In a further alternative embodiment, it is possible that the sub-elements are also completely separated from each other when dismantling the device at an elevator installation and are reassembled when re-assembled on another elevator system. The individual sub-elements are formed in particular in the form of sheets which are one inside the other or übereinanderschiebbar. In this way, on the one hand, a stable protection against falling objects is achieved and on the other hand a light construction is achieved, so that the protective roof can be easily transported.

The telescopic rods are in particular designed such that they have a plurality of mutually displaceable, in particular displaceable, elements, so that the length of the telescopic rod can be adjusted within a predetermined range. In particular, the individual parts can be determined in different positions relative to each other, so that the set length of the telescopic rod does not change again without prior release of the attachment between the individual elements of the telescopic rod.

A further aspect of the invention relates to a method for fastening a previously described device in an elevator shaft of an elevator installation. In this case, in a first step, the first telescopic rod is fastened between the two guide rails of an elevator car. In this step, in particular, the length of the telescopic rod is adjusted such that it is clamped between the two guide rails and thus a non-positive attachment is achieved.

In a second step, the previously transported individually second telescopic rod is attached to the first telescopic rod, before then in a third step, the previously also individually transported canopy is attached to the second telescopic rod.

By this method, a simple attachment of the canopy is achieved regardless of the dimensions of the elevator shaft. Furthermore, a simple, comfortable transport of the device to its place of use is achieved by the construction of the device from only two telescopic poles and the protective roof, which are easy to fasten to one another.

In a preferred embodiment, the protective cover for transport is pushed together and pushed apart again after the attachment of the canopy to the second telescopic rod, so that despite a small transport dimension a relatively large area is covered by the canopy and thus a sufficient protection of working below the canopy person from falling objects is ensured.

When fastening the telescopic rod to the guide rail in the first step, the fastening units of the telescopic rod are in particular positioned such that the pins of the mounting rods can reach into holes of the guide rails. Further, in particular, the pins are fixed in this position, in which they reach into the holes, so that accidental loosening is avoided. When dismantling the device after its use, the fixations of the pins are in particular released again, so that the pins can be moved out of the holes and the second telescopic rod can be removed again.

After attaching the device and the assembly of the device in particular the protective roof by corresponding rotation of the second telescopic rod relative to the first telescopic rod and / or by moving the canopy along the second telescopic rod and / or by moving the second telescopic rod relative to the first telescopic rod along the longitudinal direction the first telescopic rod, the position of the canopy adjusted such that the canopy is located above a working area of the person using the canopy, so that the person is protected from falling parts.

Further features and advantages of the invention will become apparent from the following description, which illustrates the invention with reference to embodiments in conjunction with the accompanying figures.

Show it:

Figure 1 is a schematic, perspective view of a device for protecting persons in a hoistway from falling objects and a section of such a hoistway.

Fig. 2 is a plan view of the device according to claim 1;

3 shows a section of the device according to FIGS. 1 and 2 and a detail of guide rails of the elevator shaft; and

4 shows a further detail of the device according to FIGS. 1 to 3.

In Fig. 1 is a schematic, perspective view of a section of an elevator system 100 is shown, wherein of the elevator system itself, only the two guide rails 102, 104 are shown, on which a not shown car of the elevator system is performed. Furthermore, FIG. 1 shows a device 10 for protecting persons working in the elevator shaft of the elevator installation 100 from falling objects. FIG. 2 shows a top view of the device 10.

The device 10 comprises a first telescopic rod 12 which comprises a plurality of elements 14 to 22 which are displaceable relative to one another in the longitudinal direction of the first telescopic rod 12, wherein the length of the first telescopic rod 12 can be adjusted relative to one another via this displacement of the individual elements 14 to 22.

A first fastening unit 26 is provided on a first end region 24 of the first telescopic rod 12, and a second fastening device 28 is provided on a second end region 30 opposite the first end region 24. The two fastening units 26, 28 each serve for fastening the first telescopic rod 12 and thus the device 10 to the respective guide rails 102, 104.

In Fig. 3, these second fastening unit 28 and a section of the second guide rail 104 are shown. The first fastening unit 26 is designed in particular identical in construction to the second fastening unit 28, so that the following statements with respect to the construction and the mode of operation of the second fastening unit 28 apply analogously to the first fastening unit 26.

The second fastening unit 28 has a recess 32, which is complementary to the region of the second guide rail 104, on which run the rollers of the elevator car. By receiving this portion of the second guide rail 104 within the recess 32 is achieved on the one hand, that the second attachment unit 28 and thus the first telescopic rod 32 can not slip sideways. On the other hand, a rotation of the first telescopic rod 12 relative to the guide rails 102, 104 is avoided.

Furthermore, the second fastening unit 28 has a pin 34, which, when the fastening unit 28 is arranged at a corresponding position, engages in a hole in the guide rail 104. In particular, a plurality of corresponding holes are provided in the guide rails 102, 104, so that the telescopic rod 12 can be fixed to a correspondingly many different positions. One of these holes is designated in FIG. 1 by way of example by the reference numeral 106.

The second fastening unit 28 is in particular designed such that the pin 34 can be fixed in its position after latching into the hole, so that unintentional release of the pin 34 is avoided from the hole. Further, it is advantageous if the pin 34 is spring-mounted on a base body of the second fastening unit 28, so that the pin 34 is automatically moved via this suspension into the hole, when the pin 34 is arranged in the region of a hole.

By this engagement of the pin 28 in a hole 106, a corresponding fixation of the second fastening unit 28 in the desired position. As shown in FIGS. 1 and 4, a second telescopic rod 42 is attached to the first telescopic rod 12 via a hinge 40, in particular in the middle of the first telescopic rod 12, which again in turn consists of a plurality of mutually displaceable units analogous to the first telescopic rod 12 , so that the length of the second telescopic rod 42 can be changed.

The joint 40 is designed such that the second telescopic rod 42 can be pivoted relative to the first telescopic rod 12 about a rotation axis 44 corresponding to the arrow PI.

On the second telescopic rod 42 in turn a protective roof 46 is fixed, which is fastened in particular in the longitudinal direction of the second rod 42 slidably on the second telescopic rod 42. For this purpose, the second telescopic rod 42 in particular a slot in which the protective cover 44 is guided and within which it, in particular via an entrapment via a screw, at any position can be fastened.

The protective roof 46 comprises three sub-elements 48, 50, 52, which are telescopically displaceable relative to each other, so that the dimensions of the canopy 46 can be changed. On the one hand, this makes it possible to adapt the size of the protective roof to the dimensions of the elevator shaft. On the other hand, thereby a simple transport of the canopy 46 is achieved at the intended location, since for transport, the sub-elements 48 to 52 are pushed together, so that the canopy 46 has only relatively small dimensions and can be easily handled. The individual sub-elements 48 to 52 are in particular formed as stable sheets, so that a reliable protection against falling objects is ensured.

Due to the displaceability of the protective roof 46 on the second telescopic rod 42 and the rotatability of the second telescopic rod 42 relative to the first telescopic rod 12 it is achieved that the position of the canopy 46 can be set variably within the elevator shaft, so that the respective work area is covered. Overall, the device shown in FIGS. 1 to 4 has the advantage that it can be flexibly and easily mounted in elevator shafts as compared with known devices for the protection against falling objects. For this purpose, the two telescopic rods 12, 42 and the protective roof 46 are transported separately from each other and in the smallest possible state pushed together into the respective elevator installation 100. Subsequently, the first telescopic rod 12 is first attached to the guide rails 102, 104 by being moved apart until the required length is reached and the fastening units 26, 28 by engagement of the pins 34 in the holes 106 of the guide rails 102, 104 and the corresponding clamping of the telescopic rod to the guide rails 102, 104 are attached. Subsequently, the second telescopic rod 42 is attached via the hinge 40 to the first telescopic rod 12, before then the canopy 46 is attached to the second telescopic rod 42 and 48 to 52 is shifted its maximum size by pushing apart of the individual sub-elements. Finally, the protective roof 46 is positioned by moving on the telescopic rod 42 or rotating the second telescopic rod 42 relative to the first telescopic rod 12 such that it is arranged over the working area of the persons working in the elevator installation 100 and thus protects them safely from falling objects.

In an alternative embodiment of the invention, instead of the second telescoping rod 42, a "normal" rod may also be used, that is, a rod that is not variable in length.Furthermore, in an alternative embodiment of the invention, the canopy 46 may be more or less than three Sub-elements 48 to 52, for example, two sub-elements or four sub-elements include.

LIST OF REFERENCE NUMBERS

10 device

12, 42 telescopic rod

14 to 22 element

24, 30 end area

26, 28 fixing unit

32 recess

34 pen

40 joint

44 axis of rotation

46 protective roof

48, 50, 52 subelement

100 elevator system

102,104 guide rail

106 holes

PI direction

Claims

claims

1. A device for protecting persons in a hoistway from falling objects with a variable in length, on the guide rails (102, 104) of an elevator car fastened, first telescopic rod (12), a variable in length, on the first telescopic rod (12 ) mounted second telescopic rod (42), and with a second telescopic rod (42) fixed protective roof (46) for protecting a person under the canopy (46) person from falling objects.

2. Device (10) according to claim 1, characterized in that at a first end (24) of the first telescopic rod (12) has a first fastening unit (26) for fixing the first telescopic rod (12) on a first guide rail (102) of an elevator car and / or a second attachment unit (28) for fastening the first telescopic rod (12) to a second guide rail (104) of the elevator car is provided at a second end (30) of the first telescopic rod (12) opposite the first end (26).

3. Device (10) according to claim 2, characterized in that the first fastening unit (26) has a recess for receiving at least a portion of the first guide rail (102) and / or the second fastening unit (28) has a recess (32) for receiving at least a partial region of the second guide rail (104).

4. Device (10) according to claim 2 or 3, characterized in that the first fastening unit (26) and / or the second fastening unit (28) each have a pin (34) which is complementary to holes (106) in the guide rails ( 102. 104) is formed and which, when the device (10) is fixed to the guide rails (102, 104) engages in one of the holes (34).

5. Device (10) according to any one of the preceding claims, characterized in that the second telescopic rod (42) via a hinge (40) about at least one axis of rotation (44) is rotatably mounted on the first telescopic rod (12).

6. Device (10) according to any one of the preceding claims, characterized in that the second telescopic rod (42) in the longitudinal direction of the first telescopic rod (12) is slidably mounted on the first telescopic rod (12).

7. Device (10) according to any one of the preceding claims, characterized in that the protective cover (46) in the longitudinal direction of the second telescopic rod (42) is slidably mounted on the second telescopic rod (42).

8. Device (10) according to any one of the preceding claims, characterized in that the second telescopic rod (42) on the first telescopic rod (12) and / or the protective roof (46) on the second telescopic rod (42) each have a release and recoverable attachment is attached.

9. Device (10) according to one of the preceding claims, characterized in that the second telescopic rod (42) on the first telescopic rod (12) and / or the protective roof (46) attached to the second telescopic rod (42) in each case via a screw connection is.

10. Device (10) according to any one of the preceding claims, characterized in that the protective roof (46) comprises a plurality of telescopically displaceable sub-elements (48 to 52).

11. Device (10) according to claim 10, characterized in that the protective roof (46) has a plurality of one another or one above the other sliding plates (48 to 52).

12. A method for fastening a device (10) according to one of claims 1 to 11 in an elevator shaft of an elevator installation (100), in which in one step, the first telescopic rod (12) between the two guide rails (102.104) is secured an elevator car in a second step, the second telescopic rod (42) is fastened to the first telescopic rod (12), and in which, in a third step, the protective cover (46) is fastened to the second telescopic rod (42).

13. The method according to claim 12, characterized in that in a fourth step, the protective cover (46) by rotating the second telescopic rod (42) relative to the first telescopic rod (12) and / or by moving the canopy (46) along the second telescopic rod (46). 42) is oriented such that the protective roof (46) is arranged above a working area of a person working in the elevator shaft.

14. The method according to claim 12 or 13, characterized in that in the first step, the length of the first telescopic rod (12) is set such that the first telescopic rod (12) between the guide rails (102, 104) is clamped.

15. The method according to any one of claims 12 to 14, characterized in that the pushed together for the transport shelter (46) pushed apart after attachment to the second telescopic rod (42).