EP3441352A1 - Surveillance device - Google Patents

Abstract

A monitoring device is provided for monitoring an alignment of a lifting article on a lift (10), comprising at least one lifting object support (18), at least one fastening device (22) for attaching the monitoring device to the lifting platform (10), and at least one sensor ( 26), wherein the support (18) is movably mounted relative to the fastening device (22), and the sensor (26) is adapted to detect a relative movement between the support (18) and the fastening device (22).

Description

The invention relates to a monitoring device and a method for monitoring an alignment of a lifting object on a lift. Furthermore, the invention relates to a lift with a monitoring device.

A lift may comprise several, for example two or four columns. Each column may have one or more support arms which are brought into contact with the lifting object. About the support arms of the lifting object is preferably taken up and carried from below.

The support arms can in particular be adjusted horizontally and / or vertically and adapted to the respective lifting object. Due to the adjustability of the support arms can attack on different components. So a lift can be used for different lifting equipment.

When the support arms are connected to the lifting object at the desired position, the support arms are moved vertically, e.g. via a hydraulic and / or pneumatic, moves upwards, so that the lifting object is raised. The lifting object can then be inspected and / or repaired.

However, if a support arm is incorrectly attached to the lifting object, for example, at a wrong, eg oblique, location, the lifting object can detach from the support arm and slip off. Even with an uneven movement of the support arms, which can lead to different heights and thus to an inclination of the lifting object, the lifting object may possibly solve.

In addition to damage to the hoist can also be caused by a loosening lifting object injuries to people in the vicinity.

Radio bubble scales are known. These can be mounted on or in the lifting object to detect inclinations. With uneven movement of the support arms, e.g. due to an operator error, they can provide some protection. However, if the brackets are already incorrectly attached to the hoist, e.g. on oblique components, a release of the lifting object can not be reliably prevented even when using a radio spirit level.

It is therefore an object of the invention to provide a monitoring device, a hoist and a method by which the orientation of a hoist on a hoist can be reliably monitored.

The solution of this object is achieved by the subject matter and the method of the independent claims.

According to the invention, the monitoring device for monitoring an alignment, in particular an inclination, of a lifting object on a lifting platform comprises at least one support for a lifting object.

The lifting object may be, for example, a vehicle, in particular a motor vehicle, eg a car or truck, a ship or an aircraft. In principle, other objects, such as a machine or machine parts, can be raised.

The support is in particular rotatably connected to the lifting object. A movement of the lifting object is thus carried out by the support. About the edition of the lifting object is held firmly.

Preferably, the pad may be releasably connected to the lifting object to at least temporarily hold the lifting object. In particular, the lifting object can be connected to the support by gravity and rest on this.

The support can basically be arbitrarily shaped, for example as a dome or flat surface. In particular, the support may also be shaped like a support arm support of a support arm of a conventional lift.

The monitoring device further comprises at least one fastening device for fastening the monitoring device to the lifting platform. Preferably, the monitoring device is attached to a support arm or a conventional support arm support.

The fastening device can be releasably or permanently connected to the lift. In particular, the fastening device may have a suspension, clamping, plug-in, latching and / or screwing device. Insoluble connections are also conceivable, for example, adhesive, rivet, soldering and / or welded joints.

Conventional lifts can be easily retrofitted with a monitoring device. Alternatively, new lifts may already be equipped with a monitoring device according to the invention.

The fastening device is preferably non-rotatably connected to the lift, in particular a support arm of the lift connected.

The support is movably mounted relative to the fastening device. In particular, the support may be movable radially and / or axially to the fastening device. Due to the movable storage, a change in the position of the lifting object can be detected in good time.

The monitoring device also comprises at least one sensor. The sensor is designed to detect the relative movement between the support and the fastening device.

If the position of the lifting object changes and, for example, a skew occurs, e.g. due to a user operating error, this is detected by the sensor. The orientation of the lift can thus be reliably monitored.

This can prevent the lifting object from coming off the lift. Damage to the lifting equipment or injuries to persons in the vicinity can be avoided.

Further developments of the invention can be found in the dependent claims, the description and the accompanying drawings.

According to one embodiment, the sensor comprises a position indicator, protractor and / or pressure gauge. The sensor may in particular be an optical, acoustic, electrical, mechanical, pneumatic and / or hydraulic sensor.

The position indicator may for example comprise a laser, which determines the position of the support relative to the fastening device. The position indicator may also include a motion detector and / or a touch sensor.

A protractor can detect in particular an occurring angular offset between the support and the fastening device. For example, an angular displacement between a first planar surface of the support and a second, in particular horizontal, planar surface of the fastening device occur, which is detected by the protractor. Also, e.g. An angular offset to a horizontal plane can be detected.

In particular, the protractor can detect a radial and / or linear movement between the support and the fastening device.

For example, the support may comprise at least a portion of a, in particular pneumatic and / or hydraulic, pressure bearing. In particular, a pressure gauge can detect when the pressure changes, e.g. falls or rises.

In particular, an axial movement between the support and the fastening device can be detected by the pressure gauge.

The monitoring system may preferably be redundant and have a plurality of sensors of the same type or different types.

According to a further embodiment, an evaluation device is provided, which is designed to evaluate and / or output the data detected by the sensor. The evaluation can be carried out in particular mechanically and / or electrically.

In particular, the evaluation can take place in the support, in the fastening device and / or in the sensor. Alternatively, the collected data can be output and evaluated, for example, only externally.

The data output can be wired or wireless, for example via radio, WLAN or Bluetooth.

According to a further embodiment, the evaluation device is designed to match the acquired data with a limit value and to output a signal when the limit value is exceeded. The limit value may be, for example, a certain angle, in particular in the range between 0.5 ° and 60 °, e.g. 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 30, 35, 40, 45, 50, 55 or 60 degrees , or trade a specific pressure value.

If a limit value is exceeded due to a relative movement between the support and the fastening device, a signal can be output. Alternatively, a signal can be permanently output.

According to a further embodiment, the signal comprises a control signal, in particular for switching off the lifting platform. In this case, the monitoring device can preferably directly access the control device of the lifting platform itself. For this purpose, an interface between the monitoring device and the control device of the lift can be provided.

For example, if a limit is exceeded, the lift can be stopped instantaneously without major loss of time. A release of the lifting object is thereby prevented.

Alternatively or additionally, the signal comprises a warning signal. An operator can thus be warned if a limit is exceeded. The warning signal can be visual, e.g. via a warning light, and / or acoustically, e.g. via a warning tone.

According to a further embodiment, a weight sensor is provided. This additional sensor allows the determination of the weight of the lifting object. The weight data of the weight sensor can be evaluated with the same evaluation device as the data of the sensor, which detects the relative movement. Alternatively, a separate evaluation device for the weight sensor can be provided.

The weight sensor may, for example, adjust the detected weight data with a limit value and, when the limit value is exceeded, a signal, e.g. a control signal and / or a warning signal output. In the event of an overload, the lift can be switched off, for example automatically.

Alternatively, the weight data can also be output permanently.

According to a further embodiment, the support and / or fastening device comprises a dome. The lifting object may for example be accommodated in the calotte of the pad and is held securely therein. A dome can adapt in particular to inclinations.

The fastening device may also comprise a dome or form a dome together with the support. For example, the calotte of the support can be received in the calotte of the fastening device and stored as a joint.

The invention also relates to a lift, e.g. for motor vehicles, with at least one monitoring device according to the invention. Basically, all types of lifting platforms are conceivable.

According to one embodiment, at least two columns are provided with, preferably in each case two, support arms, wherein each support arm is assigned at least one monitoring device.

The monitoring device is thus particularly suitable for multi-column lifts.

In principle, any number of columns may be provided, e.g. one, two, three, four, five, six or more. The columns can each be associated with only one support arm. Also two, three, four or more support arms per column are possible.

Preferably, each support arm has a monitoring device. In principle, individual, e.g. centrally arranged, support arms, also have no monitoring devices.

In particular, a common evaluation device is provided for all sensors. Alternatively, separate evaluation devices can also be provided in each case.

The invention also relates to a method for monitoring an alignment of a lifting object on a lift, in particular with a monitoring device according to the invention or a lift according to the invention. A sensor of a monitoring device detects a relative movement between a support for the lifting object and a fastening device for fastening the monitoring device to the lift.

In particular, the sensor determines the position, an angle and / or a pressure or respectively changes thereof.

Preferably, an evaluation device can evaluate and / or output the data acquired by the sensor.

In particular, the acquired data can be compared with a limit value. When the limit is exceeded, a signal, e.g. a control signal and / or a warning signal are output. Preferably, the lift can be switched off.

In addition to the detection of the relative movement between the support and the fastening device, in particular, the weight of the lifting object can be determined.

All embodiments and components of the devices described herein are particularly adapted, e.g. by means of a control device to be operated according to the method described herein. Furthermore, all embodiments of the devices described here as well as all embodiments of the method described here can each be combined with each other, in particular also detached from the specific embodiment in the context of which they are mentioned.

Fig. 1

eine schematische Darstellung einer Hebebühne,

Fig. 2

eine Schnittansicht einer Ausführungsform einer erfindungsgemäßen Überwachungsvorrichtung,

Fig. 3

eine Seitenansicht einer weiteren Ausführungsform einer erfindungsgemäßen Überwachungsvorrichtung, und

Fig. 4

eine Schnittansicht der Überwachungsvorrichtung gemäß Fig. 3.

The invention will now be described by way of example with reference to the drawings. Show it:

Fig. 1

a schematic representation of a lift,

Fig. 2

a sectional view of an embodiment of a monitoring device according to the invention,

Fig. 3

a side view of another embodiment of a monitoring device according to the invention, and

Fig. 4

a sectional view of the monitoring device according to Fig. 3 ,

First, it should be noted that the illustrated embodiments are merely exemplary in nature. In particular, the lift may also include more columns and more or less support arms. The features of one embodiment may also be arbitrarily combined with features of another embodiment.

If a figure contains a reference numeral which is not explained in the directly associated descriptive text, reference is made to the corresponding preceding or following statements in the description of the figures. Thus, the same reference numerals are used for the same or comparable components in the figures and these are not explained again.

Fig. 1 shows a lift 10 with two pillars 12. Each column 12 comprises two support arms 14 with conventional support arm rests 16th

A lifting article, e.g. a motor vehicle is positioned between the columns 12. The support arms 14 are then pivoted under the lifting object. Then the support arms 14 are moved upwards, so that the lifting object rests on the Tragarmauflagen 16.

If the support arms 14 are in the wrong place, e.g. attached to oblique components of the lifting object, this may slip off and detach from the lift 10.

Fig. 2 shows a monitoring device with a trained as a dome support 18. The lifting object can be rotatably connected to the support 18.

The support 18 may have a projection 20.

The monitoring device comprises a fastening device 22. Via the fastening device 22, the monitoring device can be fastened, for example, in a rotationally fixed manner to a lifting platform 10, in particular to support arms 14 or support arm supports 16.

The fastening device 22 may have stops 24 in which a sensor 26 is installed.

If the support arms 14 are not moved synchronously and / or the support arm supports 16 have been fastened in the wrong place, a relative movement between the support 18 and the fastening device 22 can occur.

If an angle W is exceeded, contact between the projection 20 and the stop 24 can occur. This contact is detected by the sensor 26, eg a touch sensor.

The acquired data is forwarded to an evaluation device 28 and evaluated.

If it is detected that a limit has been exceeded, a signal is output and the lift 10 is switched off if necessary.

This prevents a lifting object already in an inclined position from coming loose.

In FIG. 3 and FIG. 4 an alternative embodiment is shown. The fastening device 22 is in this case formed as a dome.

As in Fig. 4 is shown, a boundary region 30 may be predetermined, within which a relative movement between the support 18 and the fastening device 22 is permitted.

If a central reference point 32 of the support 18 leaves the boundary region 30 and is located off-center, an exceeding of the limit value is detected and a signal is output or the lifting platform 10 is switched off.

LIST OF REFERENCES

10

hydraulic ramp

12

pillar

14

support arm

16

Tragarmauflage

18

edition

20

head Start

22

fastening device

24

attack

26

sensor

28

evaluation

30

border area

32

reference point

W

corner

Claims (10)

A monitoring device for monitoring alignment of a hoist on a lift (10), comprising
at least one support (18) for the lifting object,
at least one fastening device (22) for fastening the monitoring device to the lifting platform (10), and
at least one sensor (26),
wherein the support (18) is movably mounted relative to the fastening device (22), and
the sensor (26) is adapted to detect a relative movement between the support (18) and the fastening device (22). Monitoring device according to claim 1,
characterized,
that the sensor (18) comprises a position meter, protractor and / or pressure gauge. Monitoring device according to claim 1 or 2,
characterized,
that an evaluation device (28) is provided, which is designed to evaluate the captured (18) data from the sensor and / or output. Monitoring device according to claim 3,
characterized,
that the evaluation device (28) is adapted to match the captured data with a threshold value and outputting a signal exceeds the threshold. Monitoring device according to claim 4,
characterized,
that the signal is a control signal, in particular for switching off the lift (10), and / or a warning signal comprises. Monitoring device according to one of the preceding claims, characterized
that a weight sensor is provided. Monitoring device according to one of the preceding claims, characterized
that the support (18) and / or fastening device (22) comprises a dome. Lifting platform (10) with at least one monitoring device according to one of claims 1 to 7. Lifting platform (10) according to claim 8,
characterized,
in that at least two columns (12) are provided with, preferably in each case two, support arms (14), wherein each support arm (14) is assigned at least one monitoring device. Method for monitoring an alignment of a lifting object on a lift (10), in particular with a monitoring device according to one of Claims 1 to 7 or a lifting platform (10) according to Claim 8 or 9, in which
a sensor (26) of a monitoring device detects a relative movement between a support (18) for the lifting object and a fastening device (22) for fastening the monitoring device to the lifting platform (10).

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