KR102670324B1 - Rollover prevention device for aerial work vehicles - Google Patents

Abstract

The present invention provides a loading platform for a vehicle body, a turntable disposed on the loading platform for the vehicle body, a multi-stage boom hinged to an end of the turntable and configured to be withdrawn in multiple stages, a boarding box coupled to the multi-stage boom, and each corner of the loading platform. There are outriggers arranged to prevent the vehicle from overturning, a plurality of first inertial measurement devices that collect sensing data according to changes in the horizontal surface length of the outriggers, and a plurality of first inertial measurement devices that collect sensing data according to changes in the vertical surface length of the outriggers. A plurality of second inertial measurement devices, a third inertial measurement device for measuring the rotation angle of the turntable and collecting sensing data according to the boom current angle, and a fourth inertial measurement device for collecting sensing data related to the boarding. Disclosed is a device for preventing rollover of an aerial work vehicle, characterized in that:

Description

{Rollover prevention device for aerial work vehicles}

The present invention relates to an aerial work vehicle, and more specifically, to a rollover prevention device that supports an aerial work vehicle to prevent it from tipping over.

An aerial work vehicle is a type of mobile crane with a rotary table mounted on a base frame. Aerial work vehicles have good mobility and the rotary table can be rotated, bent, and expanded, so they are used for high-altitude work such as building interior and exterior scaffolding work, telecommunication equipment erection and maintenance work, bridge inspection and repair work, and external painting work on large ships. It is very useful.

Since the work is performed in a high place, the aerial work vehicle has a structure in which a workbench is installed at the tip of a boom that extends to a rotary table so that workers or work items can be safely and conveniently boarded.

The boom on which the workbench is installed can be extended and contracted, and on the rotary table to which the boom is connected, the boom moves while rising, falling, and rotating left and right, so that the worker on the workbench works on the work surface. In this way, when a worker boards a workbench and moves the workbench while working, the center of gravity may change, and as a result, the aerial work vehicle may overturn and an accident may occur. To prevent this, conventionally, boom length detection sensors and outrigger pull-out length sensors of aerial work vehicles are used. Since these sensors are placed outside of aerial work vehicles, they are easily exposed to the work environment, causing frequent breakdowns and errors. There is a problem. Sensor failures or errors are directly related to the lives of workers, so appropriate measures are needed to deal with them.

In order to solve the above-mentioned problems, the present invention is a rollover prevention device for aerial work vehicles that replaces the sensors used in the existing AML (Auto moment limiter) system with an inertial measurement device consisting of an acceleration sensor, a gyroscope, and a magnetic field sensor. In providing.

Meanwhile, the object of the present invention is not limited to the above object, and other objects not mentioned can be clearly understood from the description below.

The rollover prevention device for an aerial work vehicle of the present invention for achieving the above-described object includes a loading platform for a vehicle body, a turntable disposed on the loading platform for the vehicle body, and a hinged connection to an end of the turntable and capable of being pulled out in multiple stages. A multi-stage boom, a boarding box coupled to the multi-stage boom, outriggers disposed at each corner of the loading stand to prevent the vehicle from overturning, and a plurality of first inertia for collecting sensing data according to changes in the horizontal length of the outriggers. A measuring device, a plurality of second inertial measurement devices for collecting sensing data according to changes in the vertical surface length of the outriggers, a third inertial measurement device for measuring the rotation angle of the turntable and collecting sensing data according to the boom current angle, It is characterized by including a fourth inertial measurement device that collects sensing data related to the boarding ship.

Here, the plurality of first inertial measurement devices and the plurality of second inertial measurement devices are interpolated into an insertion groove or insertion hole provided on one side of the outriggers, and the tipping prevention device closes the opening of the insertion groove or insertion hole. It is characterized in that it further includes a cover.

Alternatively, the third inertial measurement device may be interpolated into an insertion groove or an insertion hole provided on one side of the turntable, and the tipping prevention device may further include a cover that closes an opening of the insertion groove or insertion hole.

Alternatively, the fourth inertial measurement device is interpolated into an insertion groove or an insertion hole provided on one side of the boarding box, and the rollover prevention device further includes a cover that closes an opening of the insertion groove or insertion hole.

Additionally, the rollover prevention device further includes a display that outputs a vehicle image corresponding to the aerial work vehicle, and a control unit that controls screen output of the display, wherein the control unit includes the plurality of first inertial measurement devices, the Objects corresponding to a plurality of second inertial measurement devices, the third inertial measurement device, and the fourth inertial measurement device may be controlled to be output on the vehicle image.

In this process, the control unit detects that at least one of the plurality of first inertial measurement devices, the plurality of second inertial measurement devices, the third inertial measurement device, and the fourth inertial measurement device fails or an error occurs. In this case, control can be made to output an alarm indicating the inertial measurement device in which a failure or error has occurred on the vehicle image.

Meanwhile, the rollover prevention device further includes an adjustment device that adjusts the states of the outriggers, the turntable, the boom, and the boarding box, and a control unit that controls the adjustment device, and the control unit controls the control unit based on the sensing data. Determine the possibility of overturning of the aerial work vehicle, and control the adjustment device according to the possibility of overturning to change the horizontal and vertical lengths of the outriggers, change the turning angle of the turntable, change the length of the boom, and rotate the passenger compartment. It is characterized by limiting at least one of the changes.

In the above-described rollover prevention device, the plurality of first inertial measurement devices, the plurality of second inertial measurement devices, the third inertial measurement device, and the fourth inertial measurement device are one type of device, and include at least a length sensor. , It is characterized by being configured to support angle sensor and inertial sensor functions.

According to the present invention, among the sensors applied to existing aerial work vehicles, sensors exposed to the outside have a risk of corrosion due to the nature of aerial work vehicles being outdoor work. However, if the sensor is placed inside by applying an inertial measurement device, the sensor will corrode. It can provide the effect of lowering risk.

In addition, the present invention integrates existing sensors with separate functions such as length sensors, angle sensors, and inertial sensors into an inertial measurement device to achieve uniformity of parts, thereby reducing manufacturing costs and maintenance costs through mass production and maintenance. It can provide cost-saving effects.

Additionally, the present invention can secure flexibility in linking with other systems through simplification of the sensor system.

In addition, various effects other than the effects described above may be disclosed directly or implicitly in the detailed description according to embodiments of the present invention, which will be described later.

1 is a diagram showing an example of an aerial work vehicle to which a rollover prevention device according to an embodiment of the present invention is applied.
Figure 2 is a diagram showing an example of an aerial work vehicle in which inertial measurement devices for preventing rollover are arranged according to an embodiment of the present invention.
Figure 3 is a diagram showing an example of a device for preventing a high-altitude work vehicle from tipping over according to an embodiment of the present invention.

In order to make the characteristics and advantages of the problem-solving means of the present invention clearer, the present invention will be described in more detail with reference to specific embodiments of the present invention shown in the attached drawings.

However, detailed descriptions of known functions or configurations that may obscure the gist of the present invention are omitted in the following description and attached drawings. Additionally, it should be noted that the same components throughout the drawings are indicated by the same reference numerals whenever possible.

Terms or words used in the following description and drawings should not be construed as limited to their usual or dictionary meanings, and the inventor may appropriately define the concept of the term to explain his or her invention in the best way. It must be interpreted with meaning and concept consistent with the technical idea of the present invention based on the principle that it is. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent the entire technical idea of the present invention, so at the time of filing the present application, various methods that can replace them are available. It should be understood that equivalents and variations may exist.

In addition, terms containing ordinal numbers, such as first, second, etc., are used to describe various components, and are used only for the purpose of distinguishing one component from other components and to limit the components. Not used. For example, the second component may be referred to as the first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as the second component.

Additionally, the terms used in this specification are only used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In addition, terms such as "comprise" or "have" used in the specification are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more of the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification. It should be understood that this does not exclude in advance the presence or addition of other features, numbers, steps, operations, components, parts, or combinations thereof.

Additionally, terms such as “unit,” “unit,” and “module” used in the specification refer to a unit that processes at least one function or operation, and may be implemented as hardware, software, or a combination of hardware and software. In addition, the terms "a or an", "one", "the", and similar related terms are used in the context of describing the invention (particularly in the context of the claims below) as used herein. It may be used in both singular and plural terms, unless indicated otherwise or clearly contradicted by context.

In addition to the terms described above, specific terms used in the following description are provided to aid understanding of the present invention, and the use of these specific terms may be changed to other forms without departing from the technical spirit of the present invention.

Additionally, embodiments within the scope of the present invention include computer-readable media having or transmitting computer-executable instructions or data structures stored on the computer-readable media. Such computer-readable media may be any available media that can be accessed by a general-purpose or special-purpose computer system. By way of example, such computer-readable media may include RAM, ROM, EPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage, or in the form of computer-executable instructions, computer-readable instructions or data structures. It may be used to store or transmit certain program code means, and may include, but is not limited to, a physical storage medium such as any other medium that can be accessed by a general purpose or special purpose computer system. .

Hereinafter, the rollover prevention device for an aerial work vehicle according to an embodiment of the present invention includes at least one of a boom length sensor, an outrigger withdrawal length sensor, a boom angle sensor, a turntable turning angle measurement sensor, and a boarding (or load cell) tilt measurement sensor. By replacing the data collected by the sensor with the data collected by the acceleration sensor of the inertial measurement device, rollover prevention of aerial work vehicles can be handled.

In addition, the rollover prevention device for aerial work vehicles of the present invention replaces the data that must be obtained through a level gauge with data collected by the gyroscope and geomagnetic field sensor of the inertial measurement device to prevent the rollover of the aerial work vehicle. .

Hereinafter, the system, device, and method constituting the present invention will be described in more detail through each drawing.

1 is a diagram showing an example of an aerial work vehicle to which a rollover prevention device according to an embodiment of the present invention is applied.

Referring to FIG. 1, the aerial work vehicle 100 according to one embodiment is equipped with a turntable (T) on the loading platform 101 of the vehicle body, and an end of the turntable (T) is a multi-stage structure configured to be withdrawn in multiple stages. The boom (B) is hinged, and the boarding 102 (or load cell) is coupled to the multi-stage boom (T), and outriggers are provided at each corner of the loading stand 101 to prevent the vehicle from overturning ( 103) is provided, and refers to a car that raises the boom (B) while a worker is riding in the boarding box (102) and moves the boarding box (102) to an appropriate spatial position to perform various tasks.

The aerial work vehicle 100 includes an extension frame 105 of a predetermined length that is interpolated to an end of the turntable T and is interpolated so as to be retractable from the turntable T. The extension frame 105 is inserted into the inside of the turntable (T) and is pulled out to a predetermined length so as to extend the length of the turntable (T) and thereby increase the maximum lifting height of the multi-stage boom (B). . For example, as shown in a) to b) of FIG. 1, a 1 ton truck has a turntable (T) installed on the loading stand 101, behind the driver's seat 109, and at the end of the turntable (T). A multi-stage boom (B) that can be withdrawn in multiple stages is hinged. The extension frame 105 may be formed in a multi-stage structure that can be pulled out in multiple stages to further increase the length (height) of the boom (B). The material of the extension frame 105 is not limited to the scope of the present invention, but it is preferred to be made of a material that can secure strength and reduce the weight of the vehicle. In particular, the extension frame 105 is formed in a multi-stage structure. If possible, it is desirable to be made of a material with excellent strength so that work at height can be performed while withstanding the weight of the multi-stage boom (B), boarding box (2), and occupants.

The aerial work vehicle 100 described above includes a first hydraulic structure (not shown) for controlling the insertion or extraction of the extension frame 105, and a second hydraulic structure (not shown) for adjusting the length of the multi-stage boom (B). ) may further be included. In addition, the aerial work vehicle 100 may further include a leveling device for leveling the boarding box 102. At least a portion of the leveling device may be composed of a gear structure or a hydraulic structure.

Figure 2 is a diagram showing an example of an aerial work vehicle in which inertial measurement devices for preventing rollover are arranged according to an embodiment of the present invention.

Referring to FIG. 2, the aerial work vehicle 100 according to an embodiment of the present invention includes at least one first inertial measurement device 210 arranged to measure the length of the horizontal plane of the outrigger 103 and the vertical plane of the outrigger 103. At least one second inertial measurement device 220 arranged for measuring the length, measuring the turntable (T) turning angle and measuring the current angle of the boom (B), a third inertial measuring device (230) arranged for measuring the length of the boom (B), and It may include a fourth inertial measurement device 240 for boarding sensing.

The first inertial measurement device 210 and the second inertial measurement device 220 may be disposed on each outrigger 103. Accordingly, the first inertial measurement device 210 and the second inertial measurement device 220 may be arranged to correspond to the number of outriggers 103. For example, when the aerial work vehicle 100 includes four outriggers 103, the first inertial measurement device 210 and the second inertial measurement device 220 are each of the outriggers 103. As placed in the field, the aerial work vehicle 100 may include four first inertial measurement devices 210 and four second inertial measurement devices 220. Meanwhile, the first inertial measurement device 210 and the second inertial measurement device 220 may be placed inside each outrigger 103 so as not to be exposed to the working environment. In this regard, the outrigger 103 may be provided with an insertion groove or an insertion hole on one side into which the first inertial measurement device 210 and the second inertial measurement device 220 can be respectively inserted, and the insertion groove Alternatively, after the first inertial measurement device 210 and the second inertial measurement device 220 are inserted into the insertion hole, a cover that closes the insertion groove and the insertion hole may be disposed. The cover may be made of a transparent material so that the inertial measurement devices can be observed from the outside.

The third inertial measurement device 230 may be interpolated to one side of the turntable (T). In this regard, the turntable T includes an insertion groove or an insertion hole into which the third inertial measurement device 230 can be inserted, and the insertion groove or an insertion hole can be closed with a transparent cover.

The fourth inertial measurement device 240 may be interpolated to one side of the boarding box 102. In this regard, the boarding box 102 includes an insertion groove or insertion hole into which the fourth inertial measurement device 240 can be inserted, and the insertion groove or insertion hole can be closed with a transparent cover.

Through the above-described insertion structure, contamination and resulting corrosion of the first to fourth inertial measurement devices 210, 220, 230, and 240 can be prevented. In addition, in relation to preventing the aerial work vehicle 100 from tipping over, even if sensing data is collected from various locations of various aerial work vehicles 100, the sensing data provided by the same sensors is processed separately by location, thereby processing the sensing data. It can be done uniformly. In addition, even when the inertial measurement device needs to be replaced due to a failure or error, it is easy to study and understand the replacement method as the replacement method to be familiar with is standardized, and easy replacement application is possible accordingly.

Figure 3 is a diagram showing an example of a device for preventing a high-altitude work vehicle from tipping over according to an embodiment of the present invention.

2 and 3, the rollover prevention device 200 according to an embodiment of the present invention includes a plurality of first inertial measurement devices 210, a plurality of first inertial measurement devices 210, and a third inertial measurement device. It may include (230), a fourth inertial measurement device 240, a display 260, an adjustment device 270, and a control unit 250.

As previously described in FIG. 2, the plurality of first inertial measurement devices 210 are disposed on the plurality of outriggers 103 to measure the horizontal surface length of the outriggers 103 and provide information about the measured horizontal surface length. Can be transmitted to the control unit 250. In this process, the plurality of first inertial measurement devices 210 may transmit their own identification information along with the sensing data to the control unit 250 to help distinguish at which location the inertial measurement device is placed.

As previously described in FIG. 2, the plurality of second inertial measurement devices 220 are disposed on the plurality of outriggers 103 to measure the vertical surface length of the outrigger 103 and provide information about the measured vertical surface length. Can be transmitted to the control unit 250. In this process, the plurality of second inertial measurement devices 220 may transmit their own identification information along with the sensing data to the control unit 250 to assist in distinguishing at which location the inertial measurement device is placed.

The third inertial measurement device 230 is disposed in an interpolated form on one side of the turntable (T) and can transmit sensing data about the turning angle of the turntable and the current angle of the boom to the control unit 250. The third inertial measurement device 230 may transmit its own identification information to the control unit 250 during the sensing data transmission process.

The fourth inertial measurement device 240 can measure boom length and collect sensing data related to boarding, and transmit the sensing data along with its own identification information to the control unit 250.

The plurality of first inertial measurement devices 210 and the plurality of second inertial measurement devices 220 may be electrically connected to the control unit 250 through a wired cable or wiring. The third inertial measurement device 230 and the fourth inertial measurement device 240 may be connected to the control unit 250 through a wired cable, but may be connected to the control unit 250 wirelessly in consideration of length changes. In this regard, the aerial work vehicle 100 is connected to the third inertial measurement device 230 and is capable of transmitting the sensing data collected by the third inertial measurement device 230 to the control unit 250. It may further include a second wireless communication module that is connected to the module and the fourth inertial measurement device 240 and can transmit sensing data collected by the fourth inertial measurement device 240 to the control unit 250. Meanwhile, the plurality of first inertial measurement devices 210 and the plurality of second inertial measurement devices 220 can also transmit sensing data through a wireless communication channel with the control unit 250, and for this purpose, the aerial work vehicle ( 100 may further include a wireless communication module for transmitting sensing data of the plurality of first inertial measurement devices 210 and the plurality of second inertial measurement devices 220.

The display 260 can output a screen according to the operation of the rollover prevention device 200 of the present invention. The display 260 may be placed on the driver's seat of the aerial work vehicle 100 or at least one side of the turntable (T) or chassis (loading platform of the vehicle body). Alternatively, the display 260 may be provided as a separate, detachable tablet type and then connected to the control unit 250 as needed. The display 260 may include, for example, a touch screen with an input function. The display 260 includes the plurality of first inertial measurement devices 210, the plurality of second inertial measurement devices 220, the third inertial measurement device 230, and the fourth inertial measurement devices described above in response to the control of the controller 250. A screen related to the operation of the measuring device 240 and a corresponding screen related to changing or limiting the length of each component of the aerial work vehicle 100 may be output.

The adjustment device 270 may adjust at least some of the various components of the aerial work vehicle 100 in response to the control of the control unit 250 to prevent the aerial work vehicle 100 from tipping over. For example, the adjustment device 270 includes an outrigger adjustment device that can adjust the horizontal and vertical lengths of the outriggers 103, a turntable adjustment device that can adjust the rotation angle of the turntable (T), and the length of the boom (B). It may include at least one of an adjustable boom control device and a boarding box control device capable of controlling the rotation state of the boarding box 102.

The control unit 250 activates various inertial measurement devices related to the use of the boom B of the aerial work vehicle 100, collects sensing data of the inertial measurement devices, weight of the boarding box 102, and the weight of the aerial work vehicle 100. Calculation of the possibility of overturning and control of the control device 270 according to the possibility of overturning can be performed. For example, when a manipulation signal for the outrigger 103 is generated while the aerial work vehicle 100 is stopped, the control unit 250 operates the inertial measurement devices (e.g., a plurality of first inertial measurement devices 210, a plurality of The second inertial measurement device 220, the third inertial measurement device 230, and the fourth inertial measurement device 240) can be activated and sensing data collection can be controlled accordingly. When sensing data is collected, the control unit 250 may limit the rotation angle of the turntable (T) and the length of the boom (B) by considering the collected sensing data and the load and center of gravity of the boarding box 102. . The control unit 250 may output the restriction information to the display 260.

Meanwhile, in the process of activating the inertial measurement devices and collecting sensing data, the control unit 250 maps each inertial measurement device to each part corresponding to the aerial work vehicle 100 and outputs it to the display 260, and detects a failure or If an inertial measurement device with an error exists, an alarm regarding the error may be output through the display 260. In this regard, the control unit 250 provides a settings screen to confirm which inertial measurement device is placed at which location of the aerial work vehicle 100, based on identification information provided by the inertial measurement devices, and provides a setting screen for the operator's designation. Alternatively, depending on the settings, positioning may be determined for an inertial measurement device.

As described above, the device for preventing rollover of an aerial work vehicle according to an embodiment of the present invention includes a plurality of inertial measurement devices disposed at various positions of the aerial work vehicle 100, wherein the inertial measurement devices include a length sensor, an angle It can be provided as a structure that integrates existing sensors, such as sensors and inertial sensors, each with their own functions. Accordingly, the present invention can reduce manufacturing and maintenance costs and reduce maintenance costs by mass-producing the inertial measurement device. In addition, the present invention simplifies the sensor system by operating a single type of inertial measurement device compared to the conventional method of using a variety of sensors, thereby securing flexibility in linking with other systems.

As described above, although this specification contains details of numerous specific implementations, these should not be construed as limitations on the scope of any invention or what may be claimed, but rather may be specific to a particular embodiment of a particular invention. It should be understood as an explanation of existing characteristics.

Additionally, although operations are depicted in the drawings in a specific order, this should not be construed as requiring that those operations be performed in the specific order or sequential order shown or that all of the depicted operations must be performed to obtain desirable results. In certain cases, multitasking and parallel processing may be advantageous. Additionally, the separation of various system components in the above-described embodiments should not be construed as requiring such separation in all embodiments, and the described program components and systems are generally integrated together into a single software product or packaged into multiple software products. You must understand that it can happen.

The present description sets forth the best mode of the invention and provides examples to illustrate the invention and to enable any person skilled in the art to make and use the invention. The specification prepared in this way does not limit the present invention to the specific terms presented. Accordingly, although the present invention has been described in detail with reference to the above-described examples, those skilled in the art may make modifications, changes, and variations to the examples without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be determined by the described embodiments, but by the scope of the patent claims.

According to the present invention, the rollover prevention device for aerial work vehicles of the present invention can be manufactured, maintained, and applied more easily by unifying the sensors used to prevent rollover of aerial work vehicles into one type of inertial measurement device. , it supports various economic effects as well as easier application in the field.

B: boom
T: Turntable
100: Aerial work vehicle
101: Loading platform
102: Boarded
103: Outrigger
105: Extension frame
109: Driver's seat
210, 220, 230, 240: Inertial measurement device
250: control unit
260: display
270: Control device

Claims (8)

Car body loading stand;
a turntable disposed on a loading stand of the vehicle body;
a multi-stage boom hinged to an end of the turntable and configured to be withdrawn in multiple stages;
A boarding box coupled to the multi-stage boom;
Outriggers disposed at each corner of the loading table to prevent the vehicle from overturning;
a plurality of first inertial measurement devices that collect sensing data according to changes in horizontal length of the outriggers;
a plurality of second inertial measurement devices that collect sensing data according to changes in vertical surface length of the outriggers;
a third inertial measurement device that measures the rotation angle of the turntable and collects sensing data according to the current angle of the boom;
It includes a fourth inertial measurement device that collects sensing data related to the boarding ship,
The plurality of first inertial measurement devices, the plurality of second inertial measurement devices, the third inertial measurement device, and the fourth inertial measurement device are one type of device and have at least a length sensor, an angle sensor, and an inertial sensor function. A device for preventing rollover of an aerial work vehicle, characterized in that it is configured to support.
According to paragraph 1,
The plurality of first inertial measurement devices and the plurality of second inertial measurement devices are
It is interpolated into an insertion groove or insertion hole provided on one side of the outriggers,
The rollover prevention device is
A device for preventing tipping over of an aerial work vehicle, further comprising a cover that closes the opening of the insertion groove or insertion hole.
According to paragraph 1,
The third inertial measurement device is
It is interpolated into an insertion groove or insertion hole provided on one side of the turntable,
The rollover prevention device is
A device for preventing rollover of an aerial work vehicle, further comprising a cover that closes the opening of the insertion groove or insertion hole.
According to paragraph 1,
The fourth inertial measurement device is
It is interpolated into an insertion groove or insertion hole provided on one side of the boarding box,
The rollover prevention device is
A device for preventing rollover of an aerial work vehicle, further comprising a cover that closes the opening of the insertion groove or insertion hole.
According to paragraph 1,
A display that outputs a vehicle image corresponding to the aerial work vehicle;
It further includes a control unit that controls screen output of the display,
The control unit
Characterized in that controlling objects corresponding to the plurality of first inertial measurement devices, the plurality of second inertial measurement devices, the third inertial measurement device, and the fourth inertial measurement device to be output on the vehicle image. A device to prevent overturning of high-altitude work vehicles.
According to clause 5,
The control unit
When at least one of the plurality of first inertial measurement devices, the plurality of second inertial measurement devices, the third inertial measurement device, and the fourth inertial measurement device fails or an error occurs, the vehicle image A tip-over prevention device for an aerial work vehicle, characterized in that it is controlled to output an alarm indicating an inertial measurement device in which a failure or error has occurred.
According to paragraph 1,
an adjustment device that adjusts the states of the outriggers, the turntable, the boom, and the boarding box;
It further includes a control unit that controls the adjustment device,
The control unit
Based on the sensing data, determine the possibility of the aerial work vehicle overturning, and control the adjustment device according to the possibility of overturning to change the horizontal and vertical lengths of the outriggers, change the turning angle of the turntable, and change the length of the boom. A rollover prevention device for an aerial work vehicle, characterized in that it limits at least one change among changes and changes in the rotation state of the boarding box.
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