KR20130143203A - Overturn preventing device of high place works car - Google Patents

Abstract

The present invention relates to an overturn preventing device of a high place operation car and the technical study to solve is to improve driving performance and stability by directly controlling a proportional valve through CAN communications. The Present invention discloses the overturn preventing device of the high place operation car comprising; at least proportional valves capable of controlling the operation of a boom mounted on a frame; an angle sensor for sensing a fluctuation angle of the boom; a length sensor for sensing the extension length of the boom; a load sensing sensor for sensing the load loaded on a boarding box mounted on the front end of the boom; a monitor which collects information regarding the fluctuation angle and extension length of the boom and the load of the boarding box and display it to the outside; a main controller which receives the information regarding the fluctuation angle and extension length of the boom and the load of the boarding box and directly controls the operation of the angle sensor, length sensor, load sensing sensor, monitor, and proportional valve; and remote control part which is connected with the main controller through the CAN communications and transmits a control command selected by a user to the main controller.

Description

OVERTURN PREVENTING DEVICE OF HIGH PLACE WORKS CAR}

One embodiment of the present invention relates to an overturn prevention apparatus for a high-altitude work vehicle.

Generally, a high-altitude working vehicle is a kind of mobile crane which has a base frame mounted on a freight vehicle such as a truck and a rotary table mounted on the base frame. This is good in mobility and can rotate, It is very useful when working in a high-altitude work such as internal and external scaffolding, telecommunication equipment installation and maintenance, inspection and repair of bridges, and exterior painting of large ships.

The high work work vehicle is constructed in such a manner that a work table is installed at a tip end of a boom that is extended and retracted on a rotary table so that an operator or a work item can be carried safely and conveniently because work is performed at a high place.

The boom provided with the workbench is capable of elongation and contraction. In the rotary table to which the boom is connected, the boom rises and falls and rotates to the left and right while the worker rides on the workbench. Therefore, the delicacy and micro-operation of the conventional high-altitude working vehicle are essential. However, in the safety apparatus of a conventional high-work vehicle, there is a device for temporarily shutting off the signal line of the proportional valve when regulating the operation radius, overload, outrigger error, etc., There is equipment to slow down and stop the situation.

As described above, the conventional high-altitude working vehicle can cause a great deal of cost and system complexity in the installation of the safety device and on / off of the most important valve line of the crane operation, so there is a high possibility of malfunction due to noise or electric shock there was.

An embodiment of the present invention provides an apparatus for preventing overturning of a high-altitude work vehicle which directly controls a proportional valve through can communication to improve driving performance and safety.

Also, an embodiment of the present invention provides an apparatus for preventing overwork of a high-altitude work vehicle, which can prevent malfunction of a high-altitude work vehicle by monitoring the operation of various sensors in real time.

According to an embodiment of the present invention, there is provided an apparatus for preventing overwork of a car, comprising: at least one proportional valve capable of controlling an operation of a boom mounted on a frame; An angle sensor for sensing a relief angle of the boom; A length sensor for sensing an extension / contraction length of the boom; A load sensor mounted on a front end of the boom for sensing a load placed on a riding compartment; A monitor for collecting and displaying the information regarding the relief angle and the extension length of the detected boom and the load of the boarding hull; A main controller for receiving the information on the relief angle and the extension length of the boom and the load of the cabin and for outputting a control signal for directly controlling the operation of the angle sensor, the length sensor, the load sensor, ; And a remote operation unit connected to the main controller via CAN communication and transmitting a control command selected by the user to the main controller.

The main controller compares the information on the relief angle and the extension length of the boom and the load on the boarding compartment with predetermined reference information and generates an alarm signal through the monitor when it is determined that there is a risk of overturning the high- .

The main controller compares the information on the relief angle and the extension length of the boom and the load on the boarding compartment with predetermined reference information to shut off the power supplied to the proportional valve when it is determined that there is a risk of overturning .

The main controller is connected to a memory, and the memory can store information displayed in real time and the reference information through the monitor.

The main controller may control the driving voltage of the proportional valve to reach a maximum value at a predetermined time interval when the boarding vehicle is started or stopped so that the boarding vehicle can operate in a balanced manner.

According to an embodiment of the present invention, the apparatus for preventing rollover of a high-altitude work vehicle can directly control a proportional valve through can communication to improve driving performance and safety.

In addition, according to an embodiment of the present invention, a device for preventing rollover of a high-altitude work vehicle can prevent malfunction of a high-altitude work vehicle by monitoring the operation of various sensors in real time.

FIG. 1 is a block diagram showing a high-altitude work vehicle rollover prevention apparatus according to an embodiment of the present invention.
FIG. 2 is a view showing a high-altitude work vehicle equipped with a high-altitude work vehicle rollover prevention apparatus according to an embodiment of the present invention.
3 is a block diagram showing the monitor, the main controller and the remote control unit of Fig.
4 is a block diagram showing the main controller of Fig.
5 is a view for explaining the operation of controlling the proportional valve through the main controller of FIG.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which those skilled in the art can readily implement the present invention.

FIG. 1 is a block diagram showing an apparatus for preventing overturning of a high-altitude working vehicle according to an embodiment of the present invention, FIG. 2 is a view showing a high-altitude working vehicle equipped with an overturning preventing apparatus according to an exemplary embodiment of the present invention, FIG. 3 is a block diagram showing the monitor, the main controller, and the remote control unit of FIG. 1, FIG. 4 is a block diagram of the main controller of FIG. 1, and FIG. 5 is a flowchart illustrating an operation of controlling the proportional valve through the main controller of FIG. Fig.

1, a high altitude work vehicle rollover prevention apparatus 10 according to an embodiment of the present invention includes a proportional valve 100, an angle sensor 210, a length sensor 220, a load sensor 230, A monitor 240, a main controller 300, and a remote control unit 400.

FIG. 2 shows a high-performance work vehicle in a state where the high-work work vehicle rollover prevention apparatus 10 shown in FIG. 1 is mounted. The main controller 1 and the monitor (2) are mounted on a high- (3) and a length sensor (4) are mounted therebetween, and a load sensing sensor (5) can be mounted on the riding portion of the front end of the boom.

Although not shown in the drawings, a high-performance work vehicle in which a high-worker's car rollover prevention apparatus 10 according to an embodiment of the present invention is used is configured such that an outrigger is extended and retracted on the left and right sides of the frame, do. A boom is mounted on the middle portion of the frame so as to be rotatable and retractable. In addition, the frame is equipped with a plurality of cylinders and hydraulic motors for undulating, rotating and expanding the boom, and a plurality of proportional valves 100 for controlling the operation of the cylinders and the hydraulic motors are mounted.

In order to control the operation of the boom mounted on the frame, the proportional valve 100 is mounted on at least one or more of the connecting portions of the frame and the boom or a part of the frame. The proportional valve 100 is directly controlled through a main controller 300 described later. That is, the proportional valve 100 is operated under the control of the main controller 300 to stop the operation of the plurality of cylinders and the hydraulic motors to prevent overturning of the high-altitude operation vehicle. Meanwhile, since the structure and function of the proportional valve 100 are well known in the art to which the present invention belongs, a detailed description thereof will be omitted.

The angle sensor 210 senses the relief angle of the boom. That is, the angle sensor 210 is installed at a connecting portion between the boom and the frame, and measures an angle at which the boom is tilted with respect to the center line of the frame.

The length sensor 220 senses the extension and contraction length of the boom. The length sensor 220 is mounted on a telescopic boom having a structure in which multiple stages are drawn so as to overlap with each other, thereby measuring the telescopic length of the telescopic boom.

The load sensing sensor 230 senses a load placed on the boarding compartment mounted at the front end of the boom. That is, the load sensing sensor 230 is connected to a cabin mounted at an end of a telescopic boom, which is a front end of a boom, to measure a load on the cabin.

The monitor 240 collects and displays the information on the relief angle of the boom, the extension length, and the load of the occupant sensed by the angle sensor 210, the length sensor 220, and the load sensor 230 . That is, the monitor 240 collects information on the lifting angle of the boom, the extension length, and the load of the cabin from the main controller 300 and displays the information on the outside, thereby enabling the user to monitor in real time.

The main controller 300 receives information on the relief angle and the extension length of the boom detected by the angle sensor 210, the length sensor 220 and the load sensor 230 and the load of the cabin, And outputs a control signal for directly controlling the operation of the controller 210, the length sensor 220, the load sensor 230, and the monitor 240 and the operation of the proportional valve 100.

3, the main controller 300 includes a valve and can controller for controlling the proportional valve 100 and the can communication, and various sensors (not shown) for controlling the can communication. A sensor scanning & controller for controlling operation and receiving information sensed by various sensors, and a power supply for receiving power.

When the control signal operated by the user is transmitted from the remote control unit 400, the main controller 300 can smoothly start or stop the boarding pass so as not to lose balance. Hereinafter, the function of causing the start of the vehicle to smoothly start or stop so as not to lose balance is referred to as a RAMP function. 5, even if the user operates the remote control unit 400 (for example, the remote control joystick) to the maximum through the lamp function, the main controller 300 controls the proportional valve 100 To reach the maximum value, the crane can be operated smoothly without losing balance. In the absence of the ramp function, since the driving voltage of the proportional valve 100 reaches a maximum value at a very high speed when the remote control joystick is operated at maximum as in the basic function of Fig. 5, . Accordingly, in the present invention, the main controller 300 can directly control the proportional valve 100 through the lamp function, so that even if the user operates the traveling speed of the boarding vehicle through the remote control unit 400 at the maximum speed, And smoothly start the vehicle so that the person who boarded or boarded the vehicle does not lose the balance. In addition, the remote control unit 400 can be mounted in or removed from the vehicle It is possible to implement a function of smooth stopping so that the person on board does not lose balance.

Also, the main controller 300 compares the information on the undulation angle, the extension length, and the load of the boom with the preset reference information, and when the risk of overturning the high-altitude work vehicle is determined, the monitor 240 An alarm signal can be generated. The main controller 300 compares the information on the relief angle and the extension length of the boom and the load on the boarding compartment and the preset reference information to determine whether there is a risk of overturning the high- It is possible to shut off the power supplied to the power source.

The main controller 300 is connected to a memory, and the memory can store information displayed in real time through the monitor 240 and preset reference information.

The remote control unit 400 is connected to the main controller 300 through CAN communication and transmits a control command selected by the user to the main controller 300. That is, the remote control unit 400 may transmit a control signal operated by the user to the main controller 300, so that the main controller 300 directly controls the proportional valve 100. In the meantime, the CAN (Controller Area Network) communication corresponds to a communication network between the controllers for measurement, and more specifically, to a serial bus for a microcontroller, which connects peripheral devices such as a sensor or a starter in a real- Point to the network. The can communication is simultaneously broadcast to all nodes in the network using a unique identifier in the network. Each node determines whether to process the message based on this identifier, and the bus access order also prioritizes messages according to the principle of competition. This can communication allows uninterrupted data transmission, as opposed to a transmission disruption on Ethernet when a collision is detected. In order to optimize communication between the main controller 300 and the remote control unit 400, the noise cancellation can be used to eliminate wiring cost, complexity, space, and complexity of the system, It is possible to provide a safety device that can be controlled. The can communication was first developed by Robert Bosch in 1986 and was standardized as ISO 11519 for maximum speeds up to 125 Kbps and ISO 19898 for utilization up to 1 Mbps

Meanwhile, the main controller 300 may be protected by a control box (not shown) surrounding the main controller 300. Such a control box is made of a polypropylene resin composition comprising (A) a polypropylene resin, (B) a bromine-based flame retardant, (C) an inorganic flame retardant, and (D) a halogen trapping agent, And the flame retardancy can be improved. The polypropylene resin (A) is a highly crystalline polypropylene resin (HIPP) having an isotactic peptid fraction of 96% or more as measured by C-NMR, more specifically, isotropic propylene homopolymer and a copolymer of propylene and alpha olefin monomer Or a combination thereof. The copolymer may be a block copolymer, a random copolymer, or the like. The alpha olefins are ethylene and alpha olefins of 4 to 18 carbon atoms, and more specifically ethylene, 1-butene, 1-hexene, 1-octene and other higher olefins.

The alpha olefin is 20 to 50 mol% of the total copolymer, and the propylene-alpha olefin monomer copolymer has an intrinsic viscosity of 1.5 to 5.0 dl / g. Preferably, the copolymer of propylene-alpha olefin monomers includes propylene-ethylene copolymer, propylene-1-butene copolymer, propylene-1-hexene copolymer, propylene- have.

The melt flow index (ASTM D 1238, 230 ° C / 2.16 kg, Melt Index, MI) of the polypropylene resin (A) is 0.1 to 100 g / 10 min, preferably 1.0 to 60 g / 10 min. If the melt flow index is less than 0.1 g / 10 min, the moldability is not good. If the melt flow index is more than 100 g / 10 min, the flow property is good, but the mechanical properties may be deteriorated. The polypropylene resin (A) is contained in an amount of 40 to 98% by weight based on the polypropylene resin composition. If the content of the polypropylene resin is less than 40% by weight, the molding processability may be deteriorated. If the content is more than 98% by weight, mechanical properties may be difficult to obtain.

The bromine-based flame retardant (B) is contained in an amount of 1.0 to 30.0% by weight based on the polypropylene resin composition. If the content of the bromine-based flame retardant (B) is less than 1% by weight, the flame retardancy is unsatisfactory. If the content is more than 30% by weight, heat resistance and molding processability may be deteriorated. The bromine-based flame retardant (B) may be a commercially available flame retardant, preferably bis [3,5-dibromo-4 (2,3-dibromoproxy) phenyl] 5-dibromo-4 (2,3-dibromopropoxy) phenyl] sulfone.

The inorganic flame retardant (C) is contained in an amount of 0.5 to 20% by weight based on the polypropylene resin composition. The inorganic flame retardant (C) may be antimony trioxide. The antimony trioxide is in powder form, and the average particle size is preferably 0.2 to 5.0 mu m. Preferably, the mixing ratio of the inorganic flame retardant (B) to the brominated flame retardant (C) may be 1: 6 to 1: 2 (weight ratio) in order to improve the flame retardancy of the polypropylene resin composition.

The halogen trapping agent (D) can provide a synergistic effect of flame retardancy with an inorganic flame retardant such as antimony trioxide or a bromine-based organic compound, and a hydrotalcite capable of substituting some antimony trioxide can be used. And 0.5 to 10% by weight based on the polypropylene resin composition. If the amount of the halogen trapping agent is less than 0.5% by weight, the effect of reducing the flame retardant agent and the effect of preventing corrosion due to noxious gas can not be obtained according to the capturing agent. If the content is more than 10% by weight, Resulting in defective surface of the product.

As described above, the present invention is not limited to the above-described embodiment, but may be applied to other types of apparatuses, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: Overwork prevention device for high-altitude working vehicle 100: Proportional valve
210: Angle sensor 220: Length sensor
230: Load sensor 240: Monitor
300: main controller 400: remote control unit

Claims (5)

At least one proportional valve (100) capable of controlling the operation of the boom mounted on the frame;
An angle sensor 210 for sensing a relief angle of the boom;
A length sensor 220 for sensing the extension and contraction length of the boom;
A load sensing sensor (230) for sensing a load mounted on a boarding compartment mounted on a front end of the boom;
A monitor (240) for collecting and displaying information on the relief angle and the extension length of the detected boom and the load on the boarding compartment;
The length sensor 220, the load sensor 230, and the monitor 240 and the operation of the proportional valve (not shown) are performed on the basis of the operation of the angle sensor 210, the length sensor 220, A main controller 300 for outputting a control signal for directly controlling the operation of the microcomputer 100; And
The overturned aerial vehicle, comprising: a remote control unit 400 connected to the main controller 300 through a CAN communication and transmitting a control command selected by a user to the main controller 300. Prevention device. The method of claim 1,
The main controller 300 compares the information regarding the undulation angle and the extension length of the boom with the load of the passenger compartment and preset reference information, and when the aerial vehicle is determined to be overturned, the monitor 240 Aerial work vehicle overturn prevention device, characterized in that for generating an alarm signal through. The method of claim 1,
When the main controller 300 determines that there is a risk that the aerial work vehicle is overturned, by comparing the information regarding the undulation angle and extension length of the boom and the load of the passenger compartment with preset reference information, the proportional valve 100 Aerial work vehicle overturn prevention device, characterized in that to cut off the power supplied to. The method according to claim 2 or 3,
The main controller 300 is connected to a memory,
Wherein the memory stores information displayed in real time and the reference information through the monitor (240). The method of claim 1,
The main controller 300 controls the driving voltage of the proportional valve 100 to reach a maximum value at a predetermined time interval when starting or stopping the boarding board so that the boarding board operates while maintaining a balance. Aerial work vehicle overturn prevention device, characterized in that.

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