DE102016203539A1 - Device and method for controlling a lifting device - Google Patents

Abstract

The invention relates to a method and a device for controlling a lifting device (5) in a vehicle, wherein the device has at least one input device, at least one control and evaluation device (18), at least one first interface (20) for data and / or signal transmission between the lifting device (5) and the at least one control and evaluation device (18) and at least one further interface (21) for data and / or signal transmission between the control and evaluation device (18) and a device (22) for limiting the vehicle speed wherein the at least one input device is signal-technically connected to the control and evaluation device (18), wherein a lift signal (5) can be detected by the control and evaluation device, whereby a speed limit signal (GBS) can be generated by the control and evaluation device (18) and via the further interface (21) is transferable, if a lift signal was detected.

Description

The invention relates to a device and a method for controlling a lifting device in a vehicle. Vehicles with a lifting device are known in particular in the field of commercial vehicles. Thus, a so-called 3-sided dump truck has a dump body with a loading area, which can be tilted in three different directions. The tilting is in this case carried out by means of a lifting device which provides the necessary driving force for tilting.

The lifting device may in this case comprise a hydraulic cylinder and further devices, for example a proximity sensor, an electronic hydraulic valve, an electric motor, a switching amplifier and further elements.

It is possible for a lifting device to be manufactured by a third-party supplier and then installed on a vehicle. In this case, however, it is necessary to provide a suitable pre-installed device and a vehicle-side method of control.

The DE 11 2013 001 104 T5 discloses a dump lift indicator for mounting to a dump truck. The dump truck includes a trough mounted on a frame, a hydraulic cylinder that moves the trough up and down with respect to the frame between an overlying position and a raised position. Further, the dump truck includes an actuator that controls an up and down movement of the trough. Further, the dump truck includes a hydraulic control unit that controls the up and down movement of the trough by supplying or removing pressurized oil. The document further discloses that a traction motor controller receives a speed limit command value from the hydraulic control unit when the tray is not seated. In this solution is disadvantageous that the resting of the trough with high security requirements and redundancies must be detected. This in turn means that a corresponding sensor is expensive and expensive to produce.

Next is known the EP 2 364 877 B1 , This discloses a method for monitoring the Kippzustandes arranged on a tipper body of a dump truck dump body, which is mounted in at least one direction with respect to the tipper body pivotally mounted on the tipper body. Disclosed is also an electronic control unit which is adapted to perform the method for monitoring.

Next is known the US 6,568,763 B2 , This discloses a system for controlling an expansion / contraction operation of a cylinder, which may be a cylinder of a vehicle.

The technical problem is to provide a method and a device for controlling a lifting device in a vehicle, which allow a simple and inexpensive design of the device for control, while ensuring a desired operational safety.

The solution of the technical problem results from the objects with the features of claims 1 and 8. Further advantageous embodiments of the invention will become apparent from the dependent claims.

A device for controlling a lifting device of a vehicle or in a vehicle is proposed. The vehicle may be a motor vehicle. In particular, the vehicle may be a dump truck. The vehicle may e.g. comprise a dump body, wherein the dump body is tiltable in at least one direction. The dump body may have a cargo area. It is also conceivable that the vehicle is a so-called 3-sided dump truck.

The lifting device may be a pneumatic, hydraulic or electric lifting device.

The lifting device may comprise a lifting cylinder, in particular a lifting cylinder designed as a hydraulic cylinder. Furthermore, the lifting device may comprise a pump, in particular a hydraulic pump. Furthermore, the lifting device may comprise a drive device for the pump, in particular an electric motor. Furthermore, the lifting device may comprise a valve device, in particular an electrically controllable hydraulic valve. Furthermore, the lifting device may comprise a reservoir for an operating fluid, in particular a hydraulic reservoir.

Furthermore, the lifting device may comprise an input device, in particular an input device for mechanical actuation. This can be designed for example as a switch. Furthermore, the lifting device may comprise an amplifying device for an output signal of the input device.

Furthermore, the lifting device may comprise a device for detecting a tilting position of the dump body. For example, the lifting device may comprise a limit sensor or limit switch which generates an output signal when the dump body is in a maximum tilted state. Next, the Lifting device comprise a further limit switch or proximity switch, which generates a corresponding output signal when the dump body is in an untilted initial state.

The lifting device (and the previously explained components) can be retrofitted. This may mean that the illustrated lifting device is installed on a chassis. Here, the chassis can designate a vehicle without lifting device. The proposed device, in particular all devices and elements of the device, may be arranged on the chassis side. This may mean that the device is installed on the chassis side. This can also mean that the lifting device chassis side can be installed at a later date.

The proposed device comprises at least one input device. The input device forms an operator interface for a user, in particular a vehicle driver. By means of the input device, input signals can be generated. The input device may in particular be an input device for mechanical actuation. Of course, however, other input devices are conceivable.

Furthermore, the device comprises at least one control and evaluation device. This can be designed as a microcontroller or comprise a microcontroller. In particular, the control and evaluation device can form an electronic control unit of the vehicle.

Furthermore, the device, in particular the control and evaluation device, comprises at least one first interface for data and / or signal transmission between the lifting device and the at least one control and evaluation device. Via the first interface, e.g. Control signals for lifting and control signals for lowering are transmitted to the lifting device. The control signals are output signals of the control and evaluation device. Thus, a control signal for raising or lowering can be transmitted to the lifting device.

If the lifting device is a hydraulic lifting device, then a control signal for lifting can be transmitted, for example, to an electric motor of the lifting device, which then drives the pump, which causes the hydraulic cylinder to extend and thus lift the dump body. A control signal for lowering can for example be transmitted to a valve of the lifting device, which is set in an open state and thus causes a hydraulic drain from the hydraulic cylinder, which in turn leads to lowering of the dump body.

Depending on the type of training, a control signal can also be transmitted directly to a pump or a valve of the lifting device, in particular a hydraulic or pneumatic lifting device.

Furthermore, an output signal of a position sensor can be transmitted via the interface from the lifting device to the control and evaluation device. For example, e.g. it is conceivable that an end position sensor for detecting an untilted state of the dump body, for example a correspondingly designed proximity switch, transmits an output signal to the control and evaluation device when the dump body is in an untilted state.

Furthermore, the device, in particular the control and evaluation device, at least one further interface for data and / or signal transmission between the control and evaluation and a device for driving speed limit. The device for driving speed limit can be designed as a further electronic control unit of the vehicle. However, the device for limiting the driving speed can also be formed by the control and evaluation device. The data and / or signal transmission can take place here, for example, via a communication system, for example a bus system of the vehicle. By means of the device for limiting the vehicle speed, a driving speed of the vehicle to a desired maximum limit, which can also be referred to as a limit speed, can be limited. This means that the vehicle can not drive faster than this predetermined limit when the vehicle speed limit is activated. For example, For example, the vehicle speed limiting device may transmit appropriate signals to an engine control unit.

Here, the control and evaluation device transmit an activation signal for activating the speed limit to the device for driving speed limit. A desired vehicle speed limit may be stored in a memory device, e.g. be stored in a memory device of the device for driving speed limit, and retrieved.

Alternatively, the control and evaluation device can transmit the desired limit value and an activation signal for activating the speed limit to the device for limiting the vehicle speed.

Next, the at least one input device is signal technology with the control and Evaluation connected. For this purpose, the control and evaluation device may have further interfaces.

By means of the input device, a lift signal can be generated. Furthermore, the lifting signal can be detected by the control and evaluation device. A lift signal may be a predetermined output of the input device.

The lift signal may e.g. be generated in a corresponding operation of a corresponding operation of the input device.

According to the invention, a speed limit signal can be generated by the control and evaluation device and can be transmitted via the further interface to the device for driving speed limitation if a lift signal has been detected. When the vehicle speed limit device receives the speed limit signal, a vehicle speed limit is activated. Furthermore, a desired limit speed may be coded in the speed limit signal. In this case, the vehicle speed limit device may limit the vehicle speed to this limit speed.

In other words, the speed of the vehicle is limited when a lift signal is generated from the input device. In most operating conditions of the vehicle, this can result in the speed of the vehicle being limited when a dump body of the vehicle is in a tilted state or is placed in such a state. This in turn advantageously increases the operational safety of the vehicle.

It should be noted that the driving speed limit is generated independently of a tilting state. In particular, the speed limit signal is generated independently of an output signal of at least one position detection device of the lifting device. The activated driving speed limit can in this case also remain activated beyond an ignition state change. In particular, switching on or off the ignition can not change the activation state of the vehicle speed limit.

In a further embodiment, a deactivation signal can be detected by the control and evaluation device. The deactivation signal can likewise be generated by means of the input device, that is to say be a further output signal of the input device. For example, the deactivation signal can be generated if the input device is operated in a corresponding (further) manner of operation.

Furthermore, a speed enable signal can be generated by the control and evaluation device and can be transmitted via the further interface if a deactivation signal was detected. When the vehicle speed limit device receives a speed enable signal, the speed limit is disabled, i. the driving speed is released. Thus, a ride without speed limit may be possible even in the tilted state of the dump body.

In this case, the speed release signal can be generated in a tilted and in an untilted state of the dump body. In other words, it may be possible for a user to generate a speed enable signal when the dump body is still in a tilted state. This may be desired, for example, in a spreader vehicle, which is moved to distribute grit with a tilted dump body on the road.

The speed release is done here consciously by the user via a corresponding operation of the input device. As a result, a structure of the device for controlling can be simplified and cheapened, at the same time the desired reliability is ensured due to the user control.

In a further embodiment, a vehicle speed can be determined by means of the control and evaluation device. For example, the control and evaluation device can be connected to a device for determining the vehicle speed signal and / or data technology. The device for determining the vehicle speed can transmit a speed signal to the control and evaluation device.

Furthermore, a detected lift signal, which is generated, for example, by the input device, is not transmitted via the first interface if the vehicle speed is greater than a predetermined threshold value. This can mean that the control and evaluation device does not generate a control signal for lifting the dump body or does not transmit such a control signal, even with a detected lift signal. In other words, the dump body of the vehicle is no longer raised when the vehicle is traveling faster than the predetermined threshold. However, a detected lowering signal may be transmitted via the first interface even if the vehicle speed is greater than the predetermined threshold value. This can mean that one Lowering the dump body can be done regardless of the vehicle speed.

As a result, an operational safety is further increased in an advantageous manner, since no further lifting of the dump body can take place in a fast ride.

In a further embodiment, a lift enable signal is detectable by the control and evaluation device, wherein a detected lift signal is transmitted via the first interface if the vehicle speed is greater than the predetermined threshold or equal to the predetermined threshold and a lift enable signal has been detected. This may mean that the control and evaluation device generates and transmits a control signal for lifting the dump body when a lift signal and a lift enable signal have been detected and when the vehicle speed is greater than the predetermined threshold value. In this case, the lift-release signal can be generated in time before the lift signal. It may also be necessary for the lift signal to be detected at a predetermined time interval after the detection of the lift enable signal. The lift enable signal may be generated by the input device. In particular, the lifting enable signal can be generated by operating the input device in a further mode of operation.

This can be done in an advantageous manner, a conscious release of a lifting operation even at high vehicle speeds. Is it e.g. In a spreading vehicle, which moves in traffic, necessary to raise the dump body further to distribute grit, this lifting can be carried out even at high speeds. As a result, an operation is simplified in an advantageous manner.

In a further embodiment, the input device comprises a first button and at least one further button. The buttons can be actuated independently of each other. However, this does not rule out that the buttons can be pressed simultaneously. Thus, the buttons can e.g. be formed as mutually different components. Also, the buttons may be arranged in a common housing, e.g. in the form of so-called double screens. The buttons allow this to be actuated by a user, in particular by pressing the button.

Depending on the operating state, the buttons generate different output signals. This results in an advantageous manner, a simple design of the input device and a reliable generation of input signals.

The invention is of course not limited to input devices with buttons. Thus, any input device which can generate at least two different output signals can be used as the input device. Furthermore, the output signals can be generated by means of the input device in each case for a predetermined time, wherein the duration of the generation can be detected. Thus, the input device can also be designed as a remote control or smartphone. The following comments on the evaluation of the output signals upon actuation of the buttons can thus also apply to output signals of a differently designed input device.

In a further embodiment, a lift signal can be generated when only the first button is actuated.

Alternatively or cumulatively, a sink signal can be generated if only the further button is pressed.

Alternatively or cumulatively, a speed enable signal or a deactivation signal for generating a speed enable signal with simultaneous actuation of both push buttons for a first predetermined period of time can be generated. The first predetermined period of time may be between a minimum actuation period, for example, 0 sec, and a maximum actuation period for the generation of the velocity enable signal.

Further alternatively or cumulatively, a lift-enable signal can be generated with simultaneous actuation of both buttons for a further predetermined period of time. The further predetermined time duration may in particular be longer than the maximum actuation time duration for the generation of the speed enable signal. In this case, the actuation period can be detectable, for example by the control and evaluation device.

Thus, various operating modes of the input device will be described, with different modes of operation generating different input signals.

This advantageously results in a reliable and simple generation of input signals. This in turn increases operational safety in the vehicle.

• – ob sich die Kippmulde in einer ungekippten Stellung befindet und die Geschwindigkeitsbegrenzung nicht aktiviert ist,
• – ob sich die Kippmulde in einer ungekippten Stellung befindet und die Geschwindigkeitsbegrenzung aktiviert ist,
• – ob sich die Kippmulde in einer gekippten Stellung befindet und
• – ob ein fehlerhafter Zustand vorliegt,
• – ob ein Hebe-Freigabesignal erzeugt wurde.

In a further embodiment, the device comprises at least one display device. The display device can be used to display various operating states of the vehicle. For example, the display device may indicate

• - if the dump body is in an untilted position and the speed limit is not activated,
• - if the dump body is in an untilted position and the speed limit is activated,
• - If the dump body is in a tilted position and
• - whether a faulty condition exists,
• Whether a lift enable signal has been generated.

The display device can be connected to the data processing and / or signaling technology with the control and evaluation device. In this case, the control and evaluation device can control the display device such that different operating states are indicated by different operating modes of the display device.

Further proposed is a method for controlling a lifting device in a vehicle. The method may be performed with a device according to an embodiment described in this disclosure. Thus, the device may be configured such that a method according to one of the embodiments described in this disclosure by the device is feasible.

A lift signal is detected. The lifting signal can be generated in particular by means of an input device. Furthermore, the lifting signal can be detected by a control and evaluation device.

According to the invention, a speed limit signal is generated if a lift signal has been detected. The speed limit signal can in particular be generated by the control and evaluation device. Further, the speed limit signal may be transmitted to a cruise control device, such as an engine control unit. This results in an advantageous manner that limited when tilting the dump body from an untilted or from an already tilted position, a driving speed and thus reliability of the vehicle is increased because this can not go faster than a predetermined limit speed with tilted dump body.

In a further embodiment, a deactivation signal is detected. The deactivation signal can be generated by means of the input device and detected by the control and evaluation device. Further, a speed enable signal is generated and transmitted to a vehicle speed limiting device if a deactivation signal has been detected. This and corresponding advantages have been explained above.

In a further embodiment, a vehicle speed is determined, in particular by the control and evaluation device. Furthermore, a detected lift signal, which is generated for example by means of the input device, is not transmitted to the lifting device if the vehicle speed is greater than a predetermined threshold value. This results in an advantageous manner that no further tilting of the dump body of the vehicle can take place if the vehicle is traveling faster than a predetermined speed. This also increases operational safety when operating the vehicle.

In a further embodiment, a lift enable signal is detected. The lift-enable signal can be generated, for example, by means of the input device and detected by means of the evaluation and control device. Further, a detected lift signal is transmitted to the elevator if the vehicle speed is greater than the predetermined threshold or equal to the predetermined threshold and a lift enable signal has been detected. This and corresponding advantages have been explained above.

In a further embodiment, different operating states are displayed by means of a display device. This and corresponding advantages have also been explained above.

Overall, it results in an advantageous manner that a user of the device, in particular a driver, confirmed by appropriate operation of the device specifically that the vehicle and in particular the lifting device is in a desired state of him. As a result, requirements for a sensor system that would be used to ensure functional safety are reduced in an advantageous manner. Next results in an advantageous manner that lifting devices of different manufacturers can be used without these have to make a high effort to ensure reliability. Next results in an advantageous manner that usage restrictions are avoided, especially when the driver selectively releases certain operating conditions.

The invention will be explained in more detail with reference to an embodiment. The figures show:

1a a schematic side view of a 3-sided dump truck in a first tilted state,

1b a schematic rear view of the in 1a illustrated dump truck in a further tilted state,

1c a schematic rear view of the in 1a illustrated dump truck in a further tilted state,

2 a schematic block diagram of a lifting device and

3 a schematic block diagram of a device according to the invention.

In 1a is a schematic side view of a 3-sided dump truck 1 shown. This includes a vehicle cabin 2 a frame 3 and one relative to the frame 3 tiltable dump body 4 , The dump body 4 in this case has a cargo area. In 1a is the dump 4 shown in a tilted state. Here is the dump body 4 about an axis of rotation, which is oriented parallel to a vehicle transverse axis, tilted.

1b shows a schematic rear view of the in 1a illustrated dump truck 1 , In the in 1b shown state is the dump body 4 in a first rotational direction about an axis of rotation, which is oriented parallel to a vehicle longitudinal axis, tilted.

1c shows a schematic rear view of the in 1a illustrated dump truck 1 in another tilted state. Here is the dump body 4 in a further rotation direction about the rotation axis, which is oriented parallel to the vehicle longitudinal axis, tilted. The further direction of rotation is opposite here in the first direction of rotation.

2 shows a schematic block diagram of a lifting device 5 , The lifting device comprises the in 1a illustrated dump body 4 , Furthermore, the lifting device comprises 5 locking devices 6a . 6b . 6c , By unlocking one of these locking devices 6a . 6b . 6c and by locking the remaining locking devices can be adjusted in this case, whether the dump body is oriented about the rotation axis, which is oriented parallel to the vehicle transverse axis, or in the first rotational direction about the axis of rotation, which is oriented parallel to the vehicle longitudinal direction, or in the further direction of rotation about the axis of rotation, which is oriented parallel to the vehicle longitudinal direction, can be tilted.

Furthermore, the lifting device comprises 5 a hydraulic piston 7 , a hydraulic pump 8th , an electrically controlled hydraulic valve 9 and a hydraulic reservoir 10 , Shown is also a hydraulic flow HF of an operating fluid.

Furthermore, the lifting device comprises 5 an electric motor 12 ,

Furthermore, the lifting device comprises a main switch 13 and an amplifier device 14 for an electrical signal. Furthermore, the lifting device comprises 5 a limit switch 15 and a proximity switch 16 ,

Further illustrated is a user 17 who has the main switch 13 can operate. The user 17 can, for example, next to the dump truck 1 (please refer 1a ) are located. The main switch 13 in this case is not an element of an input device according to the invention.

In 2 and in 3 are shown by dotted lines electrical signals. Solid lines show a power supply and a hydraulic flow.

In 2 is an interface EVL for powering a power section of the lifting device 5 shown. Next is an interface EVS for supplying power to a sensor of the lifting device 5 shown. The proximity switch can be used, for example, via the EVS interface for powering the sensors 16 be energized. Via the interface EVL for the power supply of the power section of the lifting device 5 can the electric motor 12 be supplied with electrical energy when the switch 13 is pressed. In this case, the output signal AS_13 of the switch 13 through the amplifier device 14 strengthened. The output signal AS_14 of the amplifier device 14 supplies the electric motor 12 with electrical energy. The electric motor 12 drives the pump 8th on, then a fluid in the hydraulic cylinder 7 promotes. This will raise the dump body 4 causes.

Also shown is an interface for a control signal HS_18 for lifting, which of a control and evaluation 18 (please refer 3 ) is produced. The control signal HS_18 for raising the control and evaluation device 18 is via the limit switch 15 to the amplifier device 14 and the electric motor 12 transferred when the dump body 4 is not in the maximum tilted state. Here, the limit switch is used 15 for detecting the maximum tilted state. Thus, an output signal AS_15 of the limit switch 15 only generated when the dump body 4 not in maximum tilted condition. The amplifier device 14 provides as output signal AS_14 an amplified output signal AS_15 of the limit switch 15 ready to the electric motor 12 head for.

Also shown is a mechanical force MK, which is the dump body 4 on the limit switch 15 exercises when the dump body 4 is in the maximum tilted state.

Also shown is an interface for a control signal SS_18 for lowering, which is provided by the control and evaluation device 18 is produced. The control signal SS_18 for lowering serves to control the electrically controllable hydraulic valve 9 , When the control signal SS_18 is lowered to the hydraulic valve 9 transferred, so opens the hydraulic valve 9 and operating fluid may be from the hydraulic cylinder 7 in the hydraulic reservoir 10 flow. This causes a lowering of the dump body 4 ,

Also shown is an output signal VS of the proximity switch 16 , The output signal VS is generated only when the dump body 4 in the untilted state, that is in a starting position, is located.

Also shown is a mechanical force MK, which is the electric motor 12 on the pump 8th exercises. Also shown is a magnetic force MGK, which is the dump body 4 in the initial position on the proximity switch 16 exercises.

Also shown schematically is a mechanical anchoring 28 with which the lifting device 5 at the dump truck 1 , especially on the frame 3 , is attached.

In 3 is a schematic block diagram of a device according to the invention 19 shown. The device 19 includes a control and evaluation 18 , The control and evaluation device 18 has a first interface 20 for data and / or signal transmission between the lifting device 5 (please refer 2 ) and the control and evaluation device 18 on. In particular, this can be done by the evaluation and control device 18 generated control signal HS_18 for raising and control signal SS_18 are transmitted for lowering. Next can over the interface 20 the tilt signal VS of a proximity switch 16 the lifting device 5 be transmitted. Further has the control and evaluation 18 another interface 21 for data and signal transmission between the control and evaluation 18 and a (device external) device 22 to the driving speed limit. This device 22 can be designed in particular as an engine control unit.

The device 19 further comprises an input device, the first button 23 and another button 24 includes. The buttons 23 . 24 are signaling with the control and evaluation 18 connected.

Furthermore, the device comprises a display device 25 , which is also connected by signal technology with the control and evaluation.

Also shown is a power supply unit 26 , This can be provided for example by the vehicle electrical system. By the power supply device 26 an energy supply EV_18 of the control and evaluation device takes place 18 and a power supply EVL of a power section of the hoist 5 and a power supply EVS of the sensor of the lifting device 5 ,

Further shown is a driver 27 , the push button 23 . 24 can operate manually. Thus, the buttons 23 . 24 from within the vehicle cabin 2 (please refer 1 ) operable.

The control and evaluation device 18 can output signals AS_23, AS_24 the button 23 . 24 read in, which are generated when the driver 27 the or the corresponding button 23 . 24 manually operated. In a first operation BW1 only the first button 23 and not the next button 24 actuated. Receives the control and evaluation device 18 only the output signal AS_23 of the first button 23 , so a lifting signal is detected and the control and evaluation 18 generates a control signal HS_18 for lifting. In a second operating mode BW2 only the further button is activated 24 and not the first button 23 actuated. In this second operating mode BW2 receives the control and evaluation 18 only the output signal AS_24. In this case, a sink signal is detected and a control signal SS_18 for lowering is generated.

In the first operating mode BW1, the output signal AS_23 thus forms a lift signal. In the second operating mode BW2, the output signal AS_24 forms the further button 24 a lowering signal. Is the lifting signal from the control and evaluation 18 read in and detected, so transmits the control and evaluation 18 a speed limit signal GBS to the device 22 ,

Also shown are third and fourth modes BW3, BW4. Here are both buttons 23 . 24 actuated and thus each generates the corresponding output signal AS_23, AS_24. Here is an operation duration of the two buttons 23 . 24 in the respective operating modes BW3, BW4. In the third operation BW3, an operation duration is in a time interval from a first time period to a second time duration. In the fourth operation BW4, there is an operation period in a time interval from a third time period to a fourth time period. Here, the first time period is smaller than that second period of time. The second time duration is less than the third time duration. The third time duration is less than the fourth time duration. In the fourth mode of operation takes place within a predetermined period of time after pressing both buttons 23 . 24 an actuation of the first button 23 , The second time duration may here be referred to as a maximum actuation time duration for generating a speed enable signal.

Detects the control and evaluation device 18 at the same time both output signals AS_23, AS_24, so a speed enable signal GFS from the control and evaluation 18 generated and sent to the facility 22 transfer. The speed enable signal GFS is generated when the time duration of the simultaneous generation of the output signals AS_23, AS_24 is in the time interval from the first to the second time duration (third operation mode).

Next, the control and evaluation 18 determine a vehicle speed. For example, this can be done via a not shown data and / or signaling connection with a device, not shown, for determining the vehicle speed. A control signal HS_18 for lifting is provided by the control and evaluation device 18 generated at lifting signal detected only and via the interface 20 transmitted when the vehicle speed is less than or equal to the speed limit.

If the simultaneous production of the output signals AS_23, AS_24 for a period of time which is in the time interval from the third to the fourth time duration, and within a predetermined period of time after the termination of the actuation of both buttons 23 . 24 the first button 23 operated and this fourth mode of operation of the control and evaluation 18 detected, a lifting signal is detected and the control and evaluation 18 generates a control signal HS_18 for lifting. This leads to lifting even if the vehicle speed is greater than the speed limit and a lift signal is detected.

It is further shown that the control and evaluation 18 a control signal SS_25 for the display device 25 can generate. This can be designed, for example, as a light source which can be operated, for example, in a flashing mode or in a continuous light mode.

The control and evaluation device 18 can detect, for example, whether the dump body 4 is in a non-tilted state and no speed limit signal GBS was generated, the speed limit is thus not activated. In this case, no activation of the display device 25 respectively. This is thus switched off.

Is detected that the dump body 4 is in a non-tilted state, but a speed limit signal GBS was generated and thus the speed limit is activated, so the control and evaluation 18 controlling the display device such that it flashes at a first predetermined frequency.

Is detected that the dump body 4 is in a tilted state, so the control and evaluation 18 the display device 25 control that it is permanently activated.

If an error is detected, then the control and evaluation 18 the display device 25 such that it flashes at a second frequency, wherein the second frequency may be higher than the first frequency. Errors can eg errors in the control and evaluation 18 , Errors in the data interfaces, errors on sensors or actuators or other errors.

Overall, with the speed limit activated, lifting and lowering are enabled. This can also be referred to as construction site operation.

The activation and deactivation of a speed limit may preferably remain activated even after a change of ignition state.

The described operating modes BW1, ... BW4 can be carried out at any vehicle speed. At speeds above the predetermined threshold, it is not possible to generate a control signal HS_18 for lifting without further targeted operation. This excludes accidental misuse.

However, a control signal SS_18 for lowering may be generated at each vehicle speed.

Since the speed limit signal GBS can also be generated only when a control signal HS_18 is also generated and / or transmitted for lifting, the activation of the speed limit can only take place below the speed limit. As a result, no unwanted losses of propulsion take place.

The deactivation of the speed limit can be maintained until the next ignition state change.

LIST OF REFERENCE NUMBERS

1

3-side dump truck

2

cabin

3

frame

4

kippmulde

5

lifter

6a, 6b, 6c

locking device

7

hydraulic cylinders

8th

pump

9

electrically controllable hydraulic valve

10

hydraulic reservoir

12

electric motor

13

button

14

amplifier means

15

Limit switches

16

proximity switch

17

operator

18

Control and evaluation device

19

contraption

20

first interface

21

further interface

22

Device for driving speed limit

23

first button

24

another button

25

display

26

Power supply means

27

driver

28

mechanical anchoring

AS_13

Output signal of the switch 13

AS_14

Output signal of the amplifier device 14

AS_15

Output signal of the limit switch 15

MK

mechanical force

MGK

magnetic force

HF

hydraulic flow

EVL

Power supply of the power unit

EVS

Energy supply of the sensors

VS

Verkippungssignal

HS_18

Control signal for lifting

SS_18

Control signal for lowering

AS_23

Output signal of the first button

AS_24

Output signal of the further button

SS_25

Control signal of the display device

GBS

Speed limit signal

JRC

Speed enable signal

BW1

first operation

BW2

second mode of operation

BW3

third operation

BW4

fourth mode of operation

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 112013001104 T5 [0004]
• EP 2364877 B1 [0005]
• US 6568763 B2 [0006]

Claims (12)

Device for controlling a lifting device ( 5 ) in a vehicle, wherein the device has at least one input device, at least one control and evaluation device ( 18 ), at least a first interface ( 20 ) for data and / or signal transmission between the lifting device ( 5 ) and the at least one control and evaluation device ( 18 ) and at least one other interface ( 21 ) for data and / or signal transmission between the control and evaluation device ( 18 ) and a facility ( 22 ) to the driving speed limit, wherein the at least one input device signal-technically with the control and evaluation device ( 18 ), wherein a lift signal ( 5 ) is detectable by the control and evaluation device, characterized in that a speed limit signal (GBS) from the control and evaluation device ( 18 ) and via the further interface ( 21 ) is transferable if a lift signal has been detected. Apparatus according to claim 1, characterized in that a deactivation signal is detectable by the control and evaluation device, wherein a speed enable signal (GFS) from the control and evaluation device ( 18 ) and via the further interface ( 21 ) is transferable if a deactivation signal has been detected. Device according to claim 1 or 2, characterized in that by means of the control and evaluation device ( 18 ) a vehicle speed can be determined, wherein a detected lifting signal is not transmitted via the first interface ( 20 ) is transmitted if the vehicle speed is greater than a predetermined threshold. Apparatus according to claim 3, characterized in that a lift-release signal from the control and evaluation device ( 18 ) is detectable, wherein a detected lift signal via the first interface ( 20 ) is transmitted if the vehicle speed is greater than or equal to the predetermined threshold and a lift enable signal has been detected. Device according to one of the preceding claims, characterized in that the input device has a first button ( 23 ) and at least one other button ( 24 ). Apparatus according to claim 5, characterized in that a lifting signal upon actuation of the first button ( 23 ) and / or a lowering signal when the further button ( 24 ) and / or a deactivation signal (GFS) with simultaneous actuation of both buttons ( 23 . 24 ) for a first predetermined period of time and / or a lift-enable signal with simultaneous actuation of both buttons ( 23 . 24 ) is producible for a further predetermined period of time. Device according to one of the preceding claims, characterized in that the device comprises at least one display device ( 25 ). Method for controlling a lifting device ( 5 ) in a vehicle, wherein a lift signal is detected, characterized in that a speed limit signal (GBS) is generated if a lift signal has been detected. Method according to Claim 8, characterized in that a deactivation signal is detected, wherein a speed enable signal (GFS) is generated and sent to a device ( 22 ) is transmitted to limit the vehicle speed if a deactivation signal has been detected. A method according to claim 8 or 9, characterized in that a vehicle speed is determined, wherein a detected lifting signal is not applied to the lifting device ( 5 ) is transmitted if the vehicle speed is greater than a predetermined threshold. A method according to claim 10, characterized in that a lift-release signal is detected, wherein a detected lift signal to the lifting device ( 5 ) is transmitted if the vehicle speed is greater than or equal to the predetermined threshold and a lift enable signal has been detected. Method according to one of claims 8 to 11, characterized in that different operating states by means of a display device ( 25 ) are displayed.

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