EP2509908B1 - Lifting device and method for testing and monitoring such a lifting device - Google Patents

Description

The invention relates to a lifting device, in particular a single-column lift, for raising and lowering loads, which forms a lifting system with at least one further single-column lift, and a method for checking and monitoring such a lifting device, in particular for testing and monitoring a single-column lift. Lifting platform in a lifting system with at least one additional single-column lift.

From the DE 603 13 633 T2 Such a lifting system is known. This lifting system comprises at least two mobile lifting device, which has a lifting device with a guided therein carrier on which the load-receiving means can be arranged. The lifting and lowering movement of the load receiving means is driven by a drive device. On a base frame an energy storage is provided, which supplies the drive means with energy. With an additional cable, the energy storage can be charged via the public power grid when the lifting device is not in operation.

The cabling or wiring of the individual components of the drive device is provided such that the charger is connected directly to the energy storage and the energy storage directly to the electric motor of the drive means for operating a hydraulic unit, which raises and lowers the load. The electric motor is controlled by a control board. This conventional wiring is very complex and allows only partial monitoring of the components of the lifting devices during the operating phase. In addition, in case of damage to a control board of the control device, a costly on-site repair by a specialist is required.

From the US 2009/0236183 A1 Also, there is a lifting system in which the individual group columns are connected to each other with conventional wiring to be energized and communicate with each other.

From the US 2005/0045429 A1 is a wireless control for a lift system out. This has the advantage over the aforementioned lifting platform system that a cabling of the individual lifting columns is not required. This drive control is supplied with an energy store, in particular a rechargeable battery. This drive controller is connected to a display device to output states of the lift system.

The invention has for its object to provide a lifting device, in particular a single-column lift, in which a simple wiring of the individual components is possible and which can be checked and monitored in a simple manner before and during operation.

This object is achieved by a lifting device, in particular a one-column lift, which forms a lifting system with at least one further single-column lift, that at least the connections to the control board for the charger, for the at least one energy storage and the electric motor of the drive control to a current measuring resistor are performed. This has the advantage that from each connected component, a current profile, for example, in the idle state and in an operating phase, can be queried. Thus, for example, each time when switching on or during commissioning of the lifting device, a resistance measurement takes place, whereby it is checked whether the individual lines to the components in order or defective. In addition, a query and monitoring of the individual components can be made possible before or during operation of the individual components.

A further preferred embodiment of the invention provides that the control board is designed as a plug-in module and is preferably arranged interchangeably on a mounting plate, which is attachable to the lifting device. This allows for a damage of the control board or individual controls a simple complete replacement of the control device. The arrangement of the control board preferably on a mounting plate on which preferably also other components, in particular the energy storage are arranged interchangeably, a good accessibility and easy replacement is possible.

According to a further preferred embodiment of the invention, it is provided that at least one connection for the at least one energy store, a connection for the charger and / or the sensors and / or the actuators and a connection for an electric motor of the drive device are provided. Thus, the assembly and replacement of such a control board are simplified.

A further preferred embodiment of the invention provides that a connection for a display device and / or a connection for an external test device are provided on the control board. Thereby can Other external devices are connected directly to the control board, whereby the replacement of a control board is simplified due to further defined interfaces.

Furthermore, it is preferably provided that the control board has at least one connection for a further communication device, in particular a GPS, GSM module or a radio device or the like.

A further preferred embodiment of the invention provides that the current measuring resistor is coupled to the evaluation device.

Furthermore, it is preferably provided that the connection for the wireless data transmission to the control board is contacted with the current measuring resistor. As a result, a further improvement in the monitoring of the lifting device can be made possible.

Furthermore, it is preferably provided that the connection for the display device and / or a connection for an external test device on the control board are contacted with the evaluation device. This may allow integration into further ports with components on the control board. For example, the evaluation device can transmit and output different signals, error messages or other information to the display device. In addition, an external test device, diagnostic device or a storage device can be connected, for example, to perform a diagnosis or software updates.

According to a further preferred embodiment of the invention, it is provided that the at least one energy store can be connected to a high current plug. This makes it possible for the cable, which is usually lead directly from the energy store to the electric motor of the drive device for controlling the hydraulic unit, to be guided via the control board, as a result of which the energy consumption for the activation the control device on the one hand monitored and at the same time the state of charge of the energy storage is detected to timely display a recharge of the energy storage device on the display device,

According to a further advantageous embodiment of the invention it is provided that the control board is designed as an emergency stop switch, wherein all terminals are arranged on the control board, that the control board is separable by a simple Abziehbewegung of all terminals. This allows an emergency stop to be easily achieved. At the same time, however, this also makes easy commissioning possible again. In addition, a complete exchange of the control board can be carried out by an operator, without the need for a specialist staff is required.

The object is further achieved according to the invention by a method for testing and monitoring a lifting device, in particular a single-column lift for lifting and lowering of loads, which forms a lifting system with at least one further single-column lift, wherein when switching the lifting device by a Evaluation device on a control board of the drive control, to which the terminals of the at least one energy storage device, the charging device, the drive device and the at least one sensor and / or the at least one actuator is connected, queried from each connected component, a current profile and evaluated. Due to the different conductor cross-sections and the different resistances of the individual components, both a simple assignment of the queried current profiles to the connection lines and / or components can be made possible. In addition, a self-diagnosis can take place, whether the individual connection lines are in order or damaged and / or whether the individual components are still functional and connected. As a result, a self-diagnosis is carried out when the lifting device is switched on and it is ensured that the further start-up for lifting and lowering loads is only carried out if the lifting device is correctly detected by the self-diagnosis.

A further preferred embodiment of the invention provides that the current profile of the individual components is monitored before, during or after the lifting and lowering of the load suspension. As a result, individual states can be detected and in particular output on the display device. If individual states deviate from the permitted current profiles, an error message is output. In addition, not only can an error message be issued, but also specific information about which components are faulty or caused the error message.

A further preferred embodiment of the invention provides that the state of charge of the at least one energy store is queried and monitored. Due to the central supply of all terminals or lines of the lifting device via the control board is detected before and / or during operation as well as after operation of the state of charge of the energy storage. As a result, a signal for charging the energy store is output when falling below a predetermined threshold value of the state of charge, wherein the threshold value is dimensioned such that the duty cycle can still be performed controlled to the end.

In accordance with a further preferred embodiment of the method, it is provided that during a charging process of the at least one energy store, the charge state of the energy store is monitored by the evaluation device of the control board and the charging device is controlled by the evaluation device. This allows a simple power supply to suffice, thereby achieving a cost reduction.

Figur 1

eine schematische Seitenansicht einer Hebevorrichtung und

Figur 2

eine schematische Ansicht einer Steuerplatine einer Steuereinrichtung mit daran angeschlossenen Komponenten der Hebevorrichtung,

Figur 3

eine perspektivische Ansicht auf eine Montageplatte der Hebevorrichtung und

Figur 4

eine weitere schematische Ansicht auf eine Montageplatte der Hebevorrichtung gemäß Figur 3.

The invention and further advantageous embodiments and developments thereof are described in more detail below with reference to the examples shown in the drawings and explained. The features to be taken from the description and the drawings can be applied individually according to the invention individually or in combination in any combination. Show it:

FIG. 1

a schematic side view of a lifting device and

FIG. 2

a schematic view of a control board of a control device with connected components of the lifting device,

FIG. 3

a perspective view of a mounting plate of the lifting device and

FIG. 4

a further schematic view of a mounting plate of the lifting device according to FIG. 3 ,

In FIG. 1 is a schematic side view of a lifting device 11 according to the invention illustrated by way of example as a single-column lift, which is particularly suitable for mobile use. Such a single-column lift 11 forms with at least one further single-column lift 11, a lifting system. Preferably, the single-column elevators 11 are arranged in pairs opposite each other and, for example, depending on a number of axles of a vehicle according to pairs associated with each other and arranged to the axes of the vehicle to raise this.

The single-column lift 11 has a base device 12, which according to the embodiment preferably comprises a chassis or steering gear. Alternatively, the base means 12 may be formed as a support plate or mounting plate to which the single-column lift 11 is attached to the floor of a workshop or a mobile or a stationary work space. At the base device 12, a lifting column 14 is provided. At the lifting column 14, a drive device 15 is attached, which moves a carrier 16 relative to the lifting column 14 up and down. On the carrier 16, a load-receiving means 17 is provided, which engages under a load to be lifted. Preferably, the load-receiving means is designed as a wheel gripping element. Other applications are also possible.

The drive device 15 comprises a hydraulic unit 21, which drives a drive cylinder, which is preferably arranged within the carrier 16. Alternatively, the drive device can also be designed as an electrical or mechanical drive, so that, for example, a spindle drive or the like can be controlled. For controlling the hydraulic unit 21, a hydraulic control 23 is provided, which is controlled by a drive control 25. For hydraulic control of the drive device 15 actuators 24, such as a proportional valve, a lowering valve and / or a motor control valve are provided.

Between the drive control 25 and the hydraulic control 23, an electric motor 26 is provided, which in turn drives the hydraulic unit 21. Above the drive control 25, a quick-change device 28 is provided, which receives one or more energy storage 29 replaceable for powering the single-column lift 11. This quick-change device 28 can also be provided as part of a mounting plate 35 or as a mounting plate 38 for receiving the energy store 29 and / or the drive control 25 and / or the drive device 15. The mounting plate 38 can also be attached in a simple manner to the lifting column 14, wherein the components of the drive means 15 are preassembled on the mounting plate 35.

At the upper end of the lifting column 14, for example, a sensor 30 is provided for detecting an upper stroke end position. Furthermore, an actuator 31 is provided at the upper end of the lifting column 14, which is designed as a fall arrester and comprises an unlocking magnet. This unlocking magnet is driven by a coil, and thereby the coil can also be used as a sensor to interrogate the position of the fall arrester.

The drive control 25 includes a control board 33 which is preferably attached to the mounting plate 35 and thus attached easily replaceable. Likewise, a charging device 36 is attached replaceably to the at least one energy storage 29 on the mounting plate 35. The drive controller 25 controls the entire operation of the elevator 11.

In FIG. 2 a schematic view of the control board 33 of the drive control 25 is shown with the components connected thereto.

The control board 33 is designed as a plug-in module and can be attached by plugging and pulling on the mounting plate 35. This control board comprises a plurality of circuit components, in particular also microprocessors, of which only one evaluation device 38 and one current measuring resistor 39 are shown. The control board 33 has a connection 41, in particular a high-current connection, to which a cable 42 connected to the at least one energy store 29 is connected. Another connection 43 leads to the electric motor. The charging current supplied by the energy store 29 is conducted via the current measuring resistor 39 to the electric motor 26. As a result, a high-current circuit is formed, which is guided via the control board 33.

On the control board 33, a further connection 46, in particular plug connection, is provided, to which the at least one sensor 30 and the at least one actuator 31 are connected. Furthermore, the charging device 36 is connected to the plug connection 46, which is connected, for example, to a mains connection via a charging cable 52. Alternatively, autonomous power generators such as solar modules, emergency generators and the like can provide the charging current. In addition, further sensors, such as a load cell or a temperature sensor, may be connected to this plug connection 46. The plug connection 46 in turn is connected to the current measuring resistor 39, so that all components connected thereto are contacted with the current measuring resistor 39.

Furthermore, a connection 48, in particular plug connection, is provided on the control board 33, which leads to the display device 49, in particular an LCD display, on which various switching states and information of the single-column lift can be displayed. In addition, one or more further interfaces or connections 50 may be provided, such as, for example, a serial interface RS-485, so that further components are connected thereto. For example, a GPS, a GSM and / or a radio module or the like can be connected.

The control board 33 may further include a terminal 51 which is formed as a service, diagnostic and / or update plug-in connection. As a result, after connection of an external device, for example, a fault diagnosis can be carried out. Likewise, further software updates can be played. Radio modules or the like can also be connected to this connection in order to enable external security monitoring.

As a result of this arrangement of the connection lines of the individual components to the control board 33, all electrical components which can be activated on the single-column lift 11 are connected to the control board 33. This allows a star-shaped arrangement of the connection lines to the control board 33. This simplifies the cabling of the individual components on the lifting column 14. In particular, it may be provided that the lifting column 14 itself serves as a negative pole or as a neutral, so that moreover a further saving in the laying of lines to the individual components can be achieved. Furthermore, this star-shaped arrangement and central supply of the individual connecting lines to the control board 33 has the advantage that all connections can be guided in a simple manner via at least one current measuring resistor 39, which forwards the detected current signals of the connected components to an evaluation device 38. Thereby, a self-diagnosis of the connected components when switching on the single-column lift 11 are made possible by successively querying the individual connected components. Due to the different cable cross sections and the different potentials of the components connected thereto, the state of the respective component can be queried and recorded from the respective detected current profile. Such a query and monitoring can also take place during operation of the single-column lift 11 and are evaluated by the evaluation device 38. Furthermore, a simple exchange of such a control board 33 is made possible by the connection of the individual components via connections, in particular plug-in connections. After removing the terminals, the control board 33 can be removed from the mounting plate 38 and replaced with a new control board. The attachment of the connections is not a problem, since none of the connections are the same as the other and thus confusion is excluded.

This star-shaped arrangement of the individual components on the control board 33 further has the advantage that, for example, during charging of the at least one energy storage device 29 by a charging device 36 which is connectable to a public power grid or to a generator or the like, the charging current through the Current measuring resistor is running. The charging current and the state of charge of the energy store 39 are monitored by the evaluation device. As a result, the charging device 39 can be formed in a simple manner only as a power supply.

The design of the control board 33 also allows a motor current for the electric motor 26 of the drive device 15, a charging current for the energy storage 29 and a supply current for the sensors 30 and / or actuators 24, 31 are guided in total across the control board 33, whereby a complete Monitoring and diagnosis of the components of the single-column lift 11 and the determination of an energy balance of the energy storage 29 is made possible.

In the arrangement of a GSM module or another computer with an Internet access beyond a Femwartung or remote diagnosis and possibly a Aufspielen a new version of the program to control the single-column lift 11, the query of an operating log is possible.

The control board 33 preferably has a line structure and an arrangement of the terminals 41, 43, 46, 48 and / or 50, which in such a way are arranged, that the control board 33 is formed as an emergency stop switch. This means that by simply pulling off this control board 33 all connected components can be easily separated via their connections. This advantageous embodiment of the control board 33 allows that can be dispensed with a separate embodiment of an emergency stop switch.

In the Figures 3 and 4 the mounting plate 35 is shown with the example of it can be arranged components of the single-column lift 11. This arrangement in the Figures 3 and 4 forms a preassembled module, which can also be tested on the function beyond. Thus, this prefabricated assembly can be mounted directly to the lifting column 14 of the single-column lift in a simple manner. Alternatively, the mounting plate 35 may be formed in two parts, so that, for example, the hydraulic control is arranged separately on a mounting plate.

The aforementioned embodiment of the control board 33 for lifting devices 11 may be provided in particular in single-column lifts, on platforms rails as well as other lifting devices for lifting vehicles of any kind and special vehicles.

Claims (14)

1. Lifting apparatus for raising and lowering loads,

   - comprising a lifting device (14), on which a load receiving means (17) is arrangeable, with a drive device (25) which moves the load receiving means (17) up and down,

   - comprising at least one energy store (29), which supplies energy at least to the drive controller (25),

   - comprising a charging device (36) for the at least one energy store (29), with at least one actuator (23, 31) and/or at least one sensor (30), with which at least one lifting movement of the load receiving means (17) is monitored, and

   - comprising at least one display apparatus (49), which displays at least individual operating states of the lifting apparatus (11),

   - comprising a drive controller (25) having a control circuit board (33), to which connectors (41, 43, 46, 48) of the at least one energy store (29), of the charging device (36), of the drive device (15), which comprises at least one actuator (24, 31) and/or at least one sensor (30), and/or of the at least one display apparatus (49) are connectable characterised in that at least the connectors (41, 43, 46) for the charging device (36), for the at least one energy store (29), and for an electric motor (26) of the drive controller (25) are guided at the control circuit board (33) to a current-sensing resistor (39).
2. Lifting apparatus according to claim 1, characterised in that the control circuit board (33) is formed as a plug-in module and is preferably arranged replaceably on a mounting plate (35), which is attachable to the lifting device (14).
3. Lifting apparatus according to claim 1, characterised in that at least one connector (41) for the at least one energy store (29) and a connector (43) for an electric motor (26) of the drive device (15) and a connector (46) for the charging device (36) and/or for the at least one sensor (30) and/or for at least one actuator (24, 31) are provided on the control circuit board (33).
4. Lifting apparatus according to claim 1, characterised in that a connector (48) for a display apparatus (49) and/or a connector (51) for an external test unit is/are provided on the control circuit board (33).
5. Lifting apparatus according to claim 1, characterised in that the control circuit board (33) has at least one connector (50) for a further communication device, in particular a GPS, GSM or radio module.
6. Lifting apparatus according to claim 1, characterised in that the current-sensing resistor (39) is contacted with an evaluation device (38).
7. Lifting apparatus according to claim 1, characterised in that a connector (50) for a wireless data transfer device is contacted at the control circuit board (33) with the current-sensing resistor (39).
8. Lifting apparatus according to claim 1, characterised in that the connector (48) for the display device (49) and/or a connector (51) for an external test unit is contacted at the control circuit board (33) with the evaluation device (38).
9. Lifting apparatus according to claim 1, characterised in that the at least one energy store (29) and an electric motor (26) of the drive controller (25) are connectable to a high-current plug at the control circuit board (33).
10. Lifting apparatus according to claim 1, characterised in that the control circuit board (33) is formed as an emergency switch and is disconnectable simultaneously from all connectors (41, 43, 46, 48, 50).
11. Method for testing and monitoring a lifting apparatus (11) for lifting and lowering loads, said lifting apparatus forming a lifting system together with at least one further single-column lifting platform (11), a lifting device (14) with a support (16) guided by the lifting device (14) being provided, on which a load receiving means (17) is arrangable, a drive device (15) moving the load receiving means (17) up and down, at least one energy store (29) supplying energy at least to the drive device (15), a charging device (36) for the at least one energy store (29) being provided, at least one actuator (24, 31) and/or at least one sensor (30) monitoring at least one lifting movement of the load receiving means (17), and a display apparatus (49) displaying at least individual operating states of the lifting apparatus, characterised in that, when the lifting apparatus (11) is switched on, connectors (41, 43, 46, 48) of a control circuit board (33), to which at least one energy store (29), the charging device (36), the at least one actuator (24, 31) and/or at least one sensor (30) are connected, are interrogated by an evaluation device (38) and a current profile of each connected component is established.
12. Method according to claim 11, characterised in that the current profile of the individual components is ascertained and monitored by a current-sensing resistor (39) before, during, or after the raising or lowering of the load receiving means (17).
13. Method according to claim 11, characterised in that a charged state of the at least one energy store (29) is interrogated and monitored.
14. Method according to claim 11, characterised in that the charged state of the at least one energy store (29) is monitored by the evaluation device (38) during a charging operation of the at least one energy store (29) and the charging device (36) is controlled by the evaluation device (38).

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