CN108331062B - Construction machine - Google Patents
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- CN108331062B CN108331062B CN201810039056.6A CN201810039056A CN108331062B CN 108331062 B CN108331062 B CN 108331062B CN 201810039056 A CN201810039056 A CN 201810039056A CN 108331062 B CN108331062 B CN 108331062B
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- 238000010276 construction Methods 0.000 title claims abstract description 104
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 9
- 239000000446 fuel Substances 0.000 claims description 98
- 230000008859 change Effects 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000012876 topography Methods 0.000 claims description 5
- 230000000994 depressogenic effect Effects 0.000 claims 1
- 230000009467 reduction Effects 0.000 description 32
- 238000000034 method Methods 0.000 description 17
- 230000001133 acceleration Effects 0.000 description 8
- 230000033228 biological regulation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009419 refurbishment Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2025—Particular purposes of control systems not otherwise provided for
- E02F9/205—Remotely operated machines, e.g. unmanned vehicles
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The construction machine of the embodiment of the invention comprises: an engine; a hydraulic pump that is operated by rotational power of the engine to discharge hydraulic oil; a remote information management device that stores a plurality of modes set for controlling the engine and the hydraulic pump in a variety of ways in consideration of one or more of a work type, a work area, and a work intensity; and a control device that controls one or more of the engine and the hydraulic pump according to a mode selected from the plurality of modes at the telematics device.
Description
Technical Field
The present invention relates to a construction machine, and more particularly, to a construction machine that is automatically controlled to analyze a work pattern and operates under appropriate driving conditions.
Background
The construction machine generally refers to all machines used for civil engineering or construction work. In general, a construction machine includes an engine and a hydraulic pump that is operated by power of the engine, and travels or drives various working devices by hydraulic oil discharged from the hydraulic pump.
However, the construction machine can be operated in various forms according to the working conditions and the preference of the driver. For example, when a large amount of work needs to be performed, the driver may drive the construction machine for a long time in a high-load state in order to shorten the working time. Moreover, there is a possibility that excessive actions such as sudden acceleration and sudden braking are performed at any time, and thus a large burden is imposed on equipment. If the construction machine continues to perform work in this state, the components may be easily broken or damaged, and the overall life may be reduced.
Further, recently, the importance to the environment is highlighted, and along with this trend, the regulation of exhaust gas of construction machines is also becoming stricter.
For example, as a Standard concerning exhaust gas Emission from a construction machine such as a wheel loader, a Standard iii b, a Standard iv, and the like which are European Union (EU) Emission standards, and a Tier 4 Standard, which is a north american Emission environment Standard, are applied.
In addition, unlike the conventional exhaust gas regulation that originally regulates only the exhaust gas in the normal state, the exhaust gas regulation to be applied later also regulates the exhaust gas in the transition state (transition). Under the conventional regulation, since there is no regulation of the transient state of the exhaust gas such as acceleration, it has been possible to inject an arbitrary amount of fuel without restriction on the fuel injection amount during acceleration. That is, the acceleration performance of the construction machine can be forcibly improved by increasing the fuel injection amount during acceleration of the construction machine. However, this method cannot be used any more according to the regulations to be applied later.
Therefore, in order to prevent an excessive load from being continuously applied to the construction machine for a long time and to cope with new environmental regulations, it is not preferable to drive the construction machine by a method of improving the acceleration performance by excessively driving the construction machine in a high load state or simply increasing the fuel injection amount. That is, in order to suppress oversteer driving and improve acceleration, the load of the work system other than the load of the traveling system among the loads applied to the engine should be reduced, whereas the load of the traveling system should be reduced when the load of the work system is high.
However, it is difficult for the driver to drive the equipment in consideration of the load of the work system and the load of the traveling system one by one according to the work conditions.
Accordingly, manufacturers of construction machines have been providing various work modes such as an ECO mode (ECO mode), a Standard mode (Standard mode), and a Power mode (Power mode) to be applied to the construction machines, and a driver can select one of the work modes according to driving conditions to perform work.
However, since the operating conditions vary from season to season due to climate changes or from time to time due to changes in the amount of work, there is a problem in that it is difficult for the driver to manually and appropriately change the operating mode from time to time according to the changes in the operating conditions in the operating environment in which the operating conditions vary in this manner.
Disclosure of Invention
Technical subject
An embodiment of the present invention provides a construction machine that is automatically controlled to analyze a work pattern and operates under appropriate driving conditions.
Technical scheme
According to an embodiment of the invention, a work machine comprises: an engine; a hydraulic pump that is operated by rotational power of the engine to discharge hydraulic oil; a remote information management device that stores a plurality of modes set for controlling the engine and the hydraulic pump in a variety of ways in consideration of one or more of a work type, a work area, and a work intensity; and a control device that controls one or more of the engine and the hydraulic pump according to a mode selected from the plurality of modes at the telematics device.
Alternatively, the remote information management device stores data for cumulatively calculating a ratio of the time during which the engine is idling in the entire time during which the engine is operating for a set time.
Alternatively, the control means may reduce the power of the engine and the power of the hydraulic pump in stages as the ratio of the time during which the engine is idling increases.
Alternatively, the remote information management device may remotely exchange information with the remote information management device of a server provided outside or another construction machine that performs the same work in the same set area.
Alternatively, when the remote information management device cannot cumulatively calculate the ratio of the time during which the engine is idling in the entire time during which the engine is operated for a predetermined time period due to an initial operation period of the construction machine or an error in the acquired information, the remote information management device receives data stored in the remote information management device of another construction machine that performs the same work in the same set area, selects one of the plurality of modes, and transmits the selected mode to the control device.
Alternatively, the plurality of modes stored in the remote information management device are set to be able to control a travel speed or a fuel consumption amount in stages in proportion to a ratio of a time at which the engine is idling, the remote information management device selects one of the plurality of modes according to a current ratio of a time at which the engine is idling, and the control device controls the engine or the hydraulic pump to adjust the travel speed or the fuel consumption amount according to the mode selected at the remote information management device.
Alternatively, the data obtained by cumulatively calculating the ratio of the time during which the engine is idling to the total time during which the engine is operated for a predetermined period of time may be ignored, and the operator may operate the remote information management device to forcibly select one of the plurality of modes.
Alternatively, the construction machine may further include a brake pedal used for braking, and the operator may input a password to the telematics device and forcibly select one of the plurality of modes in a state where the operator presses the brake pedal when the engine rotates at or below a predetermined rotation speed.
Alternatively, the range of the travel speed or the fuel consumption amount may be adjusted by an operator operating the remote information management device to change the ratio of the time during which the engine is idling for each of the plurality of modes.
Optionally, the telematics device includes a satellite positioning system (GPS), and stores data for calculating a ratio of a travel distance measured at the satellite positioning system in an overall work time.
Alternatively, the remote information management device may exchange information with a server provided outside or with the remote information management device of another construction machine that performs the same work in the same set area, and when the operation initial stage or the work position of the construction machine is changed, the remote information management device may receive data stored in the remote information management device of another construction machine that performs the same work in the same set area, select one of the plurality of modes, and transmit the selected mode to the control device.
Further alternatively, the plurality of modes stored in the remote information management device may be set to be capable of controlling a travel speed or a fuel consumption amount in stages in proportion to a ratio of a travel distance in the overall working time, the remote information management device may select one of the plurality of modes according to a current ratio of the travel distance in the overall working time, and the control device may control the engine or the hydraulic pump to adjust the travel speed or the fuel consumption amount according to the mode selected at the remote information management device.
Alternatively, the data of the ratio of the travel distance to the total work time may be ignored, and the operator may operate the remote information management device to forcibly select one of the plurality of modes.
Alternatively, the range of the travel speed or the fuel consumption amount may be adjusted by an operator operating the remote information management device to change the range in proportion to the ratio of the travel distance in the entire work time.
Further, optionally, the remote information management apparatus further includes a satellite positioning system (GPS) for grasping a current position and a Geographic Information System (GIS) for collecting map and topographic information, a plurality of modes set to be able to control a travel speed or a fuel consumption amount stepwise according to a topography are stored in the remote information management apparatus, and one of the plurality of modes is selected by the remote information management apparatus according to the topography of the current position.
Alternatively, the remote information management device may select a mode corresponding to the current position among the plurality of modes after the set time has elapsed since the current position was recognized as the work position was changed.
Alternatively, the remote information management device may transmit a forced operation command to the control device according to a selection of an operator, and upon receiving the transmission of the forced operation command, the control device may control the engine and the hydraulic pump according to the forced operation command by ignoring data or a plurality of patterns stored in the remote information management device.
Alternatively, if the time for which the control device operates the engine and the hydraulic pump exceeds a preset safe time by ignoring data of the telematics device in accordance with the forcible operation command, the control device limits the operation of the engine and the hydraulic pump regardless of the forcible operation command.
Alternatively, the control device may generate a warning signal if the time for which the engine and the hydraulic pump are operated exceeds a preset safe time by ignoring data of the remote information management device in accordance with the forced operation command.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the embodiment of the present invention, the construction machine can be automatically controlled to operate under appropriate driving conditions for analyzing the work pattern.
Drawings
Fig. 1 is a configuration diagram of a construction machine according to a first embodiment of the present invention.
Fig. 2 and 3 are sequence diagrams illustrating a control method of the construction machine of fig. 1.
Fig. 4 and 5 are sequence diagrams showing a method of controlling a construction machine according to a second embodiment of the present invention.
Fig. 6 is a sequence diagram showing a method of controlling a construction machine according to a third embodiment of the present invention.
Description of the symbols
101-construction machine, 200-engine, 300-hydraulic pump, 500-remote information management device, 560-input part, 580-display part, 600-operation device, 700-control device.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily carry out the present invention. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.
In addition, in the embodiments, the same reference numerals are used for the constituent elements having the same configuration, and the description is representatively made in the first embodiment, while in the remaining embodiments, only the configuration different from the first embodiment will be described.
The drawings are schematic and not drawn to scale. Relative dimensions and proportions of parts shown in the figures have been shown exaggerated or reduced in size for the sake of clarity and convenience in the drawings, and any dimensions are exemplary only and not limiting. In order to show similar features, the same reference numerals are used for the same structures, elements, or components appearing in two or more drawings.
The embodiments of the present invention specifically show desirable embodiments of the present invention. As a result, various variations of the illustration are expected. Therefore, the embodiments are not limited to the specific form of the illustrated region, and for example, the embodiments also include modifications of the form due to manufacturing.
Hereinafter, a construction machine 101 according to a first embodiment of the present invention will be described with reference to fig. 1 and 2.
As illustrated in fig. 1, a construction machine 101 according to a first embodiment of the present invention includes an engine 200, a hydraulic pump 300, a remote information management device 500, and a control device 700.
Further, the working machine 101 of the first embodiment of the present invention may further include an operation device 600. The operation device 600 may include various pedals for acceleration or braking of the construction machine 101, a control lever for operating a working device that performs various kinds of work, a joystick for operating other equipment, a handle used while traveling, and the like.
The engine 200 generates power by burning fuel. That is, the engine 200 supplies rotational power to the hydraulic pump 300 to be described later. For example, engine 200 may be directly connected to hydraulic pump 300 to drive hydraulic pump 300.
The remote information management device 500 collects information on the area in which the construction machine 101 is operating, the topography of the area, the type of operation, and the intensity of operation, monitors various equipment states of the construction machine 101, and provides the control device 700 with information for controlling the engine 200 or the hydraulic pump 300 by the control device 700 to be described later. Therefore, the remote information management device 500 stores a plurality of modes set for controlling the engine 200 and the hydraulic pump 300 in a variety of ways in consideration of one or more of the work type, the work area, and the work intensity. Such a plurality of modes may be set to be able to control the travel speed or the fuel consumption amount of the work machine 101 in stages. In addition, if the telematics device 500 selects an appropriate mode in consideration of one or more of the type of work currently performed by the construction machine 101, the work area, and the work intensity among the plurality of modes, the control device 700 to be described later controls the engine 200 or the hydraulic pump 300 according to the mode selected by the telematics device 500.
The remote information management apparatus 500 can remotely exchange information with the server 900 provided outside or with the remote information management apparatus 500 of another construction machine that performs the same work in the same set area. Here, the same area that has been set may be set in consideration of the type of work performed by the construction machine 101, the scale of the work site, the topographic characteristics of the work site, and the like.
Further, the remote information management device 500 may include a display unit 580 for displaying various information and an input unit 560 for inputting information or commands by an operator. For example, the display unit 580 and the input unit 560 may be integrally formed using a touch panel or a touch panel.
Specifically, the display unit 580 may display one or more of the power of the engine 200 or the hydraulic pump 300, the traveling speed of the construction machine 101, and the like, or may display a plurality of modes that can be selected by the remote information management device 500 and a currently selected mode among the modes.
The display unit 580 may display the current operating position and area of the construction machine 101 and the topographic information of the area.
Further, the display unit 580 may display the type of work being performed by the construction machine 101, the intensity of the work, and information on the load applied to various equipment included in the construction machine.
The display unit 580 may display various information related to the construction machine 101 other than the above information.
The input unit 560 may be used when the information acquired by the operator is to be reflected on the remote information management device 500, or may be used when the operator wants to arbitrarily select a mode regardless of the mode selected by the remote information management device 500 based on the data stored in the remote information management device 500 or the data acquired by the remote information management device 500.
In addition, the telematics device 500 may further include one or more systems of a satellite positioning system (GPS), a Geographic Information System (GIS), a mobile communication system, and a wireless internet system. Thus, the remote information management device 500 can manage the position and the operating condition of the construction machine 101 during work, and the states of main systems such as an engine and a hydraulic system in real time, and can support various information and convenience for an operator. In addition, functions related to positioning of the work machine 101, network connection, remote vehicle diagnosis, accident sensing, and the like may also be performed through mobile devices such as a desktop computer or a smart phone, a notebook, a tablet, and the like, using communication and broadcast networks.
The control device 700 may control various structures of the construction machine 101 in addition to the engine 200 and the hydraulic pump 300. The control device 700 may include one or more devices selected from an Engine Control Unit (ECU) and a Vehicle Control Unit (VCU).
In particular, in the first embodiment of the present invention, the control device 700 may control the engine 200 or the hydraulic pump 300 according to the mode selected in the telematics device 500.
Specifically, in the first embodiment of the present invention, the remote information management device 500 may store data that cumulatively calculates the ratio of the time during which the engine 200 is idling in the entire time during which the engine 200 is operated, within a set time. The set time may be set in various ways according to the type of work performed by the construction machine 101, the work area, or the work intensity. For example, if the working environment changes at any time, the set time can be set to be short, and if the working environment does not change at all times, the set period can be set to be long. The operator may arbitrarily adjust the range of the set time as needed. That is, the operator can set the set time in accordance with the driving habits and tendencies of the operator.
Further, the plurality of modes stored in the telematics device 500 may be set to be able to control the travel speed or the fuel consumption amount in stages in proportion to the ratio of the time during which the engine 200 is idling. In addition, the telematics device 500 may select one of the plurality of modes according to the current ratio of the time when the engine 200 is idling.
Further, the control device 700 may adjust the traveling speed or the fuel consumption amount by controlling the engine 200 or the hydraulic pump 300 according to the mode selected at the telematics device 500.
The operation principle of the control device 700 for adjusting the traveling speed by controlling the engine 200 or the hydraulic pump 300 according to the mode selected at the telematics device 500 in the first embodiment of the present invention will be described in detail with reference to fig. 2.
The traveling speed of the construction machine 101 may be controlled by the engine 200, but when the construction machine 101 includes another traveling motor, the traveling speed may be controlled by controlling the traveling motor. That is, since the engine 200, the hydraulic pump 300, and the travel motor used in some cases are connected to each other and operated, the travel speed of the construction machine 101 can be controlled in a complex manner by various methods.
First, the plurality of modes stored in the telematics device 500 may include a high-intensity operation mode, a medium-intensity operation mode, and a low-intensity operation mode.
The high-intensity operation mode is selected in a case where the ratio of the time during which the engine 200 is idling, out of the entire time during which the engine 200 is operated, is smaller than the first operation reference ratio that has been set. The medium-intensity operation mode is selected when the time ratio of idling of the engine 200 is equal to or more than the first operation reference ratio and less than the second operation reference ratio. Wherein the second work reference ratio is higher than the first work reference ratio. The low-intensity operation mode is selected when the time ratio of idling of the engine 200 is equal to or greater than the second operation reference ratio.
For example, alternatively, the first work reference ratio is 30%, and the second work reference ratio is 70%. That is, alternatively, the high-intensity operation mode is assigned when the time ratio of the engine 200 idling is greater than 0% and 30% or less over the entire time of operating the engine 200, the medium-intensity operation mode is assigned when the time ratio of the engine 200 idling is greater than 30% and 70% or less, and the low-intensity operation mode is assigned when the time ratio of the engine 200 idling is greater than 70%. However, in the first embodiment of the present invention, the set first work reference ratio and second work reference ratio are not limited to the above, and may be variously set in consideration of the work environment or the tendency of the operator.
If the telematics device 500 selects one of the plurality of modes according to the current ratio of the time during which the engine 200 is idling, the control device 700 may control the travel speed of the construction machine 101 differently for the high-intensity work mode, the medium-intensity work mode, and the low-intensity work mode.
Specifically, control device 700 may operate engine 200 or hydraulic pump 300 so that the travel speed increases in the order of the high-intensity work mode, the medium-intensity work mode, and the low-intensity work mode. That is, alternatively, the control device 700 controls the traveling speed of the construction machine 101 to a relatively low speed in the high-intensity work mode, controls the traveling speed of the construction machine 101 to a medium speed that is faster than the low speed in the medium-intensity work mode, and controls the traveling speed of the construction machine 101 to a high speed that is faster than the medium speed in the low-intensity work mode. The ranges of the high speed, the medium speed, and the low speed may be set in various ways depending on the type of the construction machine 101 and the work environment. In this way, the travel speed of the construction machine 101 can be increased in the order of the high-intensity operation mode, the medium-intensity operation mode, and the low-intensity operation mode. For example, alternatively, the traveling speed controlled in the high-intensity work mode is 20km per hour, the traveling speed controlled in the medium-intensity work mode is 30km per hour, and the traveling speed controlled in the low-intensity work mode is controlled to the maximum speed.
The operation principle of the control device 700 for adjusting the fuel consumption amount by controlling the engine 200 or the hydraulic pump 300 according to the mode selected at the telematics device 500 in the first embodiment of the present invention will be described in detail with reference to fig. 3.
First, the plurality of modes stored in the telematics device 500 may include a normal mode, a first fuel consumption reduction mode, and a second fuel consumption reduction mode.
The normal mode is selected in a case where the ratio of the time during which the engine 200 is idling, out of the entire time during which the engine 200 is operated, is smaller than the first fuel consumption reference ratio that has been set. The first fuel consumption reduction mode is selected when the time ratio at which the engine 200 is idling is equal to or greater than the first fuel consumption reference ratio and less than the second fuel consumption reference ratio. Wherein the second reference fuel consumption ratio is higher than the first reference fuel consumption ratio. The second fuel consumption reduction mode is selected when the time rate at which the engine 200 is idling is equal to or greater than the second fuel consumption reference rate.
For example, alternatively, the first reference fuel consumption ratio is 50%, and the second reference fuel consumption ratio is 70%. That is, the normal mode is selected when the time rate at which engine 200 is idling is greater than 0% and less than 50% of the total time engine 200 is operated, the first fuel consumption reduction mode is selected when the time rate at which engine 200 is idling is 50% or more and less than 70%, and the second fuel consumption reduction mode is selected when the time rate at which engine 200 is idling is 70% or more. However, in the first embodiment of the present invention, the first fuel consumption reference ratio and the second fuel consumption reference ratio that have been set are not limited to the above, and may be set in various ways in consideration of the work environment and the tendency of the operator.
If the telematics device 500 selects one of the plurality of modes according to the current ratio of the time during which the engine 200 is idling, the control device 700 may control the engine 200 and the hydraulic pump 300 of the construction machine 101 differently for the normal mode, the first fuel consumption reduction mode, and the second fuel consumption reduction mode.
Specifically, control device 700 may reduce the power of engine 200 and the power of hydraulic pump 300 in stages as the ratio of the time during which engine 200 is idling increases over the entire time during which engine 200 is operated. Alternatively, the control device 700 normally controls the engine 200 and the hydraulic pump 300 in the normal mode, reduces the power of the engine 200 and the hydraulic pump 300 by 10% in the first fuel consumption reduction mode with respect to the normal mode, and reduces the power of the engine 200 and the hydraulic pump 300 by 20% in the second fuel consumption reduction mode with respect to the normal mode. In this way, the control device can reduce the power of the engine 200 and the hydraulic pump 300 in the order of the normal mode, the first fuel consumption reduction mode, and the second fuel consumption reduction mode. Further, reducing the power of engine 200 and hydraulic pump 300 reduces the fuel consumption and improves the fuel efficiency.
Further, in the initial stage of operation of the construction machine 101 or when the information that cannot be acquired or is acquired due to malfunction of various sensors or equipment is erroneous, the remote information management device 500 may not be able to cumulatively calculate the ratio of the time during which the engine 200 idles in the entire time during which the engine 200 is operated within a predetermined time.
In this case, in the first embodiment of the present invention, the remote information management apparatus 500 may receive data stored in the remote information management apparatus 500 of another construction machine that performs the same work in the same set area, select one of the plurality of modes, and transmit the selected mode to the control apparatus.
As such, according to the first embodiment of the present invention, the telematics device 500 can accurately select a mode suitable for the current situation among a plurality of modes, and can stably select a mode also in an emergency situation.
The remote information management device 500 may transmit a forced operation command to the control device according to the selection of the operator. When receiving the transmission of the forced operation command from the remote information management device 500, the control device 700 may control the engine 200 and the hydraulic pump 300 in accordance with the forced operation command, regardless of the data or the plurality of modes stored in the remote information management device 500.
For example, in the first embodiment of the present invention, the forced operation command may be a command for forcibly selecting one of the plurality of modes by an operator operating the remote information management device 500, regardless of a ratio of a time during which the engine 200 idles in a predetermined time period in which the entire time during which the engine 200 is operated is cumulatively calculated.
For example, when the engine 200 is rotated at or below a set rotation speed, the forced operation command can be input after the operator inputs a password to the remote information management device 500 while pressing a brake pedal used for braking. Here, the set rotation speed of the engine 200 may be set differently depending on the type of the engine 200, and may be, for example, a rotation speed when the engine is in a neutral state.
Further, in the first embodiment of the present invention, the method in which the worker inputs the forced action command to the remote information management apparatus 500 may include a method of forcibly selecting one of the plurality of modes.
Further, if the time for which the control device 700 operates the engine 200 and the hydraulic pump 300 exceeds the set safe time by ignoring the data of the remote information management device 500 in accordance with the forced operation command, the remote information management device 500 can restrict the operations of the engine 200 and the hydraulic pump 300 regardless of the forced operation command. The set safe time may be set in various ways depending on the type of the construction machine 101 and the type of work performed by the construction machine 101. That is, if the preset safe time is exceeded, the remote information management device 500 ignores the forced operation command of the operator, selects a mode corresponding to the current situation among a plurality of modes based on the data stored in the remote information management device 500, and the control device 700 may control the engine 200 and the hydraulic pump 300 based on the mode selected by the remote information management device 500.
Further, if the time for which the control device 700 ignores the data of the remote information management device 500 and operates the engine 200 and the hydraulic pump 300 exceeds the set safe time in accordance with the forced operation command, the remote information management device 500 may generate a warning signal.
For example, if the preset safe time is exceeded, the remote information management device 500 first generates a warning signal, and if the forcible operation command is not yet withdrawn or changed after the generation of the warning signal, the operations of the engine 200 and the hydraulic pump 300 may be restricted.
Further, according to the first embodiment of the present invention, the change of the range of the travel speed or the fuel consumption amount can be adjusted in proportion to the ratio of the time during which the engine 200 idles for each of the plurality of modes by the operator operating the remote information management device 500.
Specifically, for example, the operator can arbitrarily change the first operation reference ratio and the second operation reference ratio which are references for distinguishing the high-intensity operation mode, the medium-intensity operation mode, and the low-intensity operation mode among the plurality of modes. For example, the operator may change the first operation reference ratio from 30% to 40% and the second operation reference ratio from 70% to 80%.
The operator can distinguish a range in which the travel speed adjusted by controlling engine 200 or hydraulic pump 300 with control device 700 is adjusted for each mode. For example, the traveling speed controlled in the high-intensity work mode may be changed from 20km to 25km and the traveling speed controlled in the medium-intensity work mode may be changed from 30km to 40 km.
The operator may arbitrarily change the first fuel consumption reference ratio and the second fuel consumption reference ratio, which are references for distinguishing the normal mode, the first fuel consumption reduction mode, and the second fuel consumption reduction mode from each other among the plurality of modes. For example, alternatively, the first reference fuel consumption ratio is changed from 50% to 40%, and the second reference fuel consumption ratio is changed from 70% to 80%.
Further, the operator can adjust the fuel consumption amount adjusted by controlling the engine 200 or the hydraulic pump 300 by the control device 700 for each mode. For example, alternatively, the power of the engine 200 and the hydraulic pump 300 is originally reduced by 10% to 5% with respect to the normal mode in the first fuel consumption reduction mode, and the power of the engine 200 and the hydraulic pump 300 is originally reduced by 20% to 10% with respect to the normal mode in the second fuel consumption reduction mode.
Further, according to the first embodiment of the present invention, the data stored in the remote information management apparatus 500 may also be initialized by the operator.
As described above, the method of adjusting the range of the traveling speed or the fuel consumption amount in proportion to the ratio of the time during which the engine 200 idles for each of the plurality of modes by operating the remote information management device 500 by the operator or the method of initializing the data stored in the remote information management device 500 by the operator may be performed according to the method of inputting the forced operation command to the remote information management device 500 by the operator. That is, alternatively, when the password is input to the remote information management device 500 in a state where the operator presses the brake pedal used in braking when the engine 200 rotates at or below the set rotation speed, the operator operates the remote information management device 500 to change the range of the traveling speed or the fuel consumption amount for each of the plurality of modes in proportion to the ratio of the time during which the engine 200 idles, or the operator initializes the data stored in the remote information management device 500.
With this configuration, the construction machine 101 according to the first embodiment of the present invention can be automatically controlled to operate under appropriate driving conditions in order to analyze the work mode.
Specifically, the travel speed or the fuel consumption amount of the construction machine 101 may be controlled in stages in proportion to the ratio of the time during which the engine 200 is idling to the total time during which the engine 200 is operated.
Therefore, even if the driver cannot appropriately change the work mode in accordance with the current work environment in a work environment in which the work conditions vary, the mode suitable for the current work environment can be automatically selected by the remote information management apparatus 500.
A construction machine 101 according to a second embodiment of the present invention will be described below with reference to fig. 1, 4, and 5.
The telematics device 500 for the construction machine 101 according to the second embodiment of the present invention includes a satellite positioning system (GPS). In addition, the remote information management device 500 stores data for calculating the ratio of the travel distance measured by the satellite positioning system in the entire work time. Wherein, the ratio of the travel distance in the overall working time may be expressed in terms of the overall working time (h)/the travel distance (km). That is, if the vehicle travels 90km in 9 hours, the ratio of the travel distance is 0.1, and if the vehicle travels 180km in 9 hours, the ratio of the travel distance is 0.05.
Further, the plurality of modes stored in the remote information management device 500 may be set to be capable of controlling the travel speed or the fuel consumption amount in stages in proportion to the ratio of the travel distance in the entire working time of the construction machine 101. In addition, the remote information management apparatus 500 may select one of the plurality of modes according to the current ratio of the travel distance in the entire working time of the construction machine 101.
Further, the control device 700 may adjust the traveling speed or the fuel consumption amount by controlling the engine 200 or the hydraulic pump 300 according to the mode selected at the telematics device 50.
The operation principle of the control device 700 for adjusting the traveling speed by controlling the engine 200 or the hydraulic pump 300 according to the mode selected at the telematics device 500 in the second embodiment of the present invention will be described in detail with reference to fig. 4.
First, the plurality of modes stored in the telematics device 500 may include an intensity operation mode, a middle intensity operation mode, and a low intensity operation mode.
The high-intensity work mode is selected when the ratio of the travel distances measured by the satellite positioning system is smaller than the first work reference ratio that has been set during the entire work time of the construction machine 101. The medium-intensity work mode is selected when the ratio of the travel distances is equal to or greater than the first work reference ratio and less than the second work reference ratio. Wherein the second work reference ratio is higher than the first work reference ratio. And selecting a low-intensity work mode when the ratio of the travel distances is equal to or greater than the second work reference ratio.
For example, alternatively, the first work reference ratio is 0.05 and the second work reference ratio is 0.1. That is, the high-intensity work mode may be selected when the ratio of the travel distances measured by the satellite positioning system is less than 0.05, the medium-intensity work mode may be selected when the ratio of the travel distances is 0.05 or more and less than 0.1, and the low-intensity work mode may be selected when the ratio of the travel distances is 0.1 or more during the entire work time of the construction machine 101. However, in the second embodiment of the present invention, the set first work reference ratio and second work reference ratio are not limited to the above, and may be variously set in consideration of the work environment or the tendency of the operator.
If the telematics device 500 selects one of the plurality of modes according to the ratio of the travel distance, the control device 700 may control the travel speed of the construction machine 101 differently for each of the high-intensity work mode, the medium-intensity work mode, and the low-intensity work mode.
Specifically, control device 700 may operate engine 200 or hydraulic pump 300 so that the travel speed increases in the order of the high-intensity work mode, the medium-intensity work mode, and the low-intensity work mode. That is, alternatively, the control device 700 controls the traveling speed of the construction machine 101 to a low speed in the high-intensity work mode, controls the traveling speed of the construction machine 101 to a medium speed in the medium-intensity work mode, and controls the traveling speed of the construction machine 101 to a high speed in the low-intensity work mode. The ranges of the high speed, the medium speed, and the low speed may be set in various ways depending on the type of the construction machine 101 and the work environment. In this way, the travel speed of the construction machine 101 can be increased in the order of the high-intensity operation mode, the medium-intensity operation mode, and the low-intensity operation mode.
The operation principle of the control device 700 for adjusting the fuel consumption amount by controlling the engine 200 or the hydraulic pump 300 according to the mode selected at the telematics device 500 in the second embodiment of the present invention will be described in detail with reference to fig. 5.
First, the plurality of modes stored in the telematics device 500 may include a normal mode, a first fuel consumption reduction mode, and a second fuel consumption reduction mode.
The normal mode is selected when the ratio of the travel distance measured by the satellite positioning system is smaller than the first fuel consumption reference ratio that has been set during the entire working time of the construction machine 101. The first fuel consumption reduction mode is selected when the ratio of the travel distance is equal to or greater than the first fuel consumption reference ratio and less than the second fuel consumption reference ratio. Wherein the second reference fuel consumption ratio is higher than the first reference fuel consumption ratio. The second fuel consumption reduction mode is selected when the ratio of the travel distance is equal to or greater than the second fuel consumption reference ratio.
For example, alternatively, the first fuel consumption reference ratio is 0.75, and the second fuel consumption reference ratio is 0.1. That is, the normal mode may be selected when the ratio of the travel distances measured by the satellite positioning system is less than 0.75, the first fuel consumption reduction mode may be selected when the ratio of the travel distances is 0.75 or more and less than 0.1, and the second fuel consumption reduction mode may be selected when the ratio of the travel distances is 0.1 or more during the entire work time of the construction machine 101. However, in the second embodiment of the present invention, the first fuel consumption reference ratio and the second fuel consumption reference ratio that have been set are not limited to the above, and may be variously set in consideration of the work environment or the tendency of the operator.
If the telematics device 500 selects one of the plurality of modes according to the ratio of the travel distance measured by the satellite positioning system during the entire working time of the construction machine 101, the control device 700 may control the engine 200 and the hydraulic pump 300 of the construction machine 101 differently for the normal mode, the first fuel consumption reduction mode, and the second fuel consumption reduction mode, respectively.
Specifically, the control device 700 may reduce the power of the engine 200 and the power of the hydraulic pump 300 in stages as the ratio of the travel distance measured by the satellite positioning system decreases during the entire working time of the construction machine 101. The control device 700 normally controls the engine 200 and the hydraulic pump 300 in the normal mode, reduces the power of the engine 200 and the hydraulic pump 300 by 10% in the first fuel consumption reduction mode with respect to the normal mode, and reduces the power of the engine 200 and the hydraulic pump 300 by 20% in the second fuel consumption reduction mode with respect to the normal mode. In this manner, control device 700 can reduce the power of engine 200 and hydraulic pump 300 in the order of the normal mode, the first fuel consumption reduction mode, and the second fuel consumption reduction mode. Further, reducing the power of engine 200 and hydraulic pump 300 reduces the fuel consumption and improves the fuel efficiency.
In the second embodiment of the present invention, similarly, the remote information management apparatus 500 can remotely exchange information with the server 900 provided outside or the remote information management apparatus 500 of another construction machine that performs the same work in the same set area.
In this case, when the operation start or the work position of the construction machine 101 is changed, the remote information management apparatus 500 may receive the transmission of data stored in the remote information management apparatus 500 of another construction machine that performs the same work in the same set area, select one of the plurality of modes, and transmit the selected mode to the control apparatus. Therefore, the remote information management apparatus 500 can accurately select a mode suitable for the current situation among a plurality of modes, and can stably select a mode also in an emergency situation.
In the second embodiment of the present invention, similarly, the data of the ratio of the travel distance to the entire working time stored in the remote information management device 500 can be ignored, and the operator can operate the remote information management device 500 to forcibly select one of the plurality of modes. That is, the remote information management device 500 can transmit the forced operation command to the control device according to the selection of the operator. When receiving the transmission of the forced operation command from the remote information management apparatus 500, the control apparatus 700 may control the engine 200 and the hydraulic pump 320 in accordance with the forced operation command, regardless of the data or the plurality of modes stored in the remote information management apparatus 500.
For example, in the second embodiment of the present invention, the forced operation command may be data obtained by ignoring a ratio of a travel distance measured by a satellite positioning system in the entire work time of the construction machine 101, and the operator may operate the remote information management device 500 to forcibly select one of the plurality of modes.
The method for the worker to input the forced action command to the remote information management device 500 is the same as the first embodiment. In the second embodiment of the present invention, too, the method in which the worker inputs the forced action command to the remote information management apparatus 500 may include a method in which the worker forcibly selects one of the plurality of modes.
In the second embodiment of the present invention, similarly, if the time for which the control device 700 ignores the data of the remote information management device 500 and operates the engine 200 and the hydraulic pump 300 exceeds the set safe time in accordance with the forced operation command, the operations of the engine 200 and the hydraulic pump 300 can be limited regardless of the forced operation command. That is, if the preset safe time is exceeded, the telematics device 500 may ignore a forced operation command of an operator, select a mode corresponding to the current situation among a plurality of modes according to data stored in the telematics device 500, and the control device 700 may control the engine 200 and the hydraulic pump 300 according to the mode selected in the telematics device 500.
Further, if the time for which the control device 700 ignores the data of the remote information management device 500 and operates the engine 200 and the hydraulic pump 300 exceeds the set safe time in accordance with the forced operation command, the remote information management device 500 may generate a warning signal. For example, if the preset safe time is exceeded, the remote information management device 500 first generates a warning signal, and if the forcible operation command is not yet withdrawn or changed after the generation of the warning signal, the operations of the engine 200 and the hydraulic pump 300 may be restricted.
Further, according to the second embodiment of the present invention, the operator can operate the remote information management device 500 to change the range of the travel speed or the fuel consumption amount in proportion to the ratio of the travel distance measured by the satellite positioning system in the entire work time of the construction machine 101 for each of the plurality of modes.
Specifically, for example, the operator can arbitrarily change the first operation reference ratio and the second operation reference ratio which are references for distinguishing the high-intensity operation mode, the medium-intensity operation mode, and the low-intensity operation mode among the plurality of modes. For example, the operator may change the first operation reference ratio from 0.05 to 0.04 and the second operation reference ratio from 0.1 to 0.09.
The operator can distinguish a range in which the travel speed adjusted by controlling engine 200 or hydraulic pump 300 with control device 700 is adjusted for each mode. For example, the traveling speed controlled in the high-intensity work mode may be changed from 20km to 25km and the traveling speed controlled in the medium-intensity work mode may be changed from 30km to 40 km.
The operator may arbitrarily change the first fuel consumption reference ratio and the second fuel consumption reference ratio, which are references for distinguishing the normal mode, the first fuel consumption reduction mode, and the second fuel consumption reduction mode from each other among the plurality of modes. For example, alternatively, the first fuel consumption reference ratio is changed from 0.75 to 0.8, and the second fuel consumption reference ratio is changed from 0.1 to 0.12.
Further, the operator can adjust the fuel consumption amount adjusted by controlling the engine 200 or the hydraulic pump 300 by the control device 700 for each mode. For example, alternatively, the power of the engine and the hydraulic pump is originally reduced by 10% to 5% with respect to the normal mode in the first fuel consumption reduction mode, and the power of the engine and the hydraulic pump is originally reduced by 20% to 10% with respect to the normal mode in the second fuel consumption reduction mode.
In the second embodiment of the present invention, similarly, the data stored in the remote information management apparatus 500 may be initialized by the operator.
As described above, the method of changing the range of the travel speed or the fuel consumption amount in proportion to the ratio of the travel distance measured by the satellite positioning system in the entire work time of the construction machine 101 for each of the plurality of modes by the operator operating the remote information management device 500 or the method of initializing the data stored in the management device 500 by the operator may be performed according to a method of inputting a forced operation command to the remote information management device by the operator. That is, alternatively, when the operator presses the brake pedal used for braking while the engine 200 is rotating at or below the set rotation speed and inputs the password to the remote information management device 500, the operator operates the remote information management device 500 to change the range of the travel speed or the fuel consumption amount for each of the plurality of modes in proportion to the ratio of the travel distance measured by the satellite positioning system in the entire work time of the construction machine 101, or the operator initializes the data stored in the remote information management device 500.
With this configuration, the construction machine 101 according to the second embodiment of the present invention can be automatically controlled to operate under appropriate driving conditions in order to analyze the work mode.
Specifically, the construction machine 101 can control the travel speed or the fuel consumption in stages in proportion to the ratio of the travel distance measured by the satellite positioning system during the entire work time.
Therefore, even if the driver cannot appropriately change the work mode in accordance with the current work environment in a work environment in which the work conditions vary, the mode suitable for the current work environment can be automatically selected by the remote information management device.
A construction machine 101 according to a third embodiment of the present invention will be described with reference to fig. 1 and 6.
The telematics device 500 of the construction machine 101 according to the third embodiment of the present invention includes a satellite positioning system (GPS) for grasping the current position and a Geographic Information System (GIS) for collecting map and topographic information. In addition, a plurality of modes set to be able to control the travel speed or the fuel consumption in stages according to the terrain are stored in the remote information management device 500. That is, the telematics device 500 can select one of a plurality of modes according to the topography of the current location.
For example, when the work position of the construction machine 101 is a high mountain, an inclined surface, a wet land, or a position with a large amount of clay, the engine 200 and the hydraulic pump 300 may be controlled by placing a weight on the work load. Conversely, when the work position of the construction machine 101 is on the flat ground or the ground and the operation of the construction machine 101 is appropriate, the engine 200 and the hydraulic pump 300 can be normally controlled without placing a weight on the work load. Such topographic information can be grasped by a Geographic Information System (GIS) built in the remote information management apparatus 500.
In addition, if the remote information management apparatus 500 recognizes that the work position of the construction machine 101 has been changed, it is possible to select a mode corresponding to the current position among the plurality of modes after the set time has elapsed from the current position. Accordingly, the mode can be prevented from being changed even though the working position of the construction machine 101 is not actually changed. For example, the mode may be set not to be changed when the current position of the work machine 101 is a position temporarily passed through during movement or when the work machine 101 is temporarily separated from the work site to receive refurbishment or inspection.
With this configuration, the construction machine 101 according to the third embodiment of the present invention can be automatically controlled to operate under appropriate driving conditions in order to analyze the work mode.
Specifically, the work machine 101 may select a mode suitable for the current position in consideration of the topographic characteristics of the work position.
Therefore, even if the driver cannot appropriately change the work mode in accordance with the current work environment in a work environment in which the work position and the work condition vary, the mode suitable for the current work environment can be automatically selected by the remote information management apparatus.
Further, the present invention is not limited to the foregoing embodiments. That is, two or more of the first, second, and third embodiments may be compositely implemented.
Although the embodiments of the present invention have been described above with reference to the drawings, it will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the technical spirit or essential characteristics thereof.
Therefore, the above-described embodiments should be construed as illustrative and not restrictive in all aspects, the detailed description of the scope of the present invention is presented in the claims to be described later, and all modifications or variations derived from the meanings and scope of the claims and their equivalent concepts should be construed as falling within the scope of the present invention.
Claims (10)
1. A work machine, comprising:
an engine;
a hydraulic pump that is operated by rotational power of the engine to discharge hydraulic oil;
a remote information management device that stores a plurality of modes set for controlling the engine and the hydraulic pump in a variety of ways in consideration of one or more of a work type, a work area, and a work intensity; and
a control device that controls one or more of the engine and the hydraulic pump according to a mode selected from the plurality of modes at the telematics device,
the telematics device stores data for cumulatively calculating a ratio of a time during which the engine is idling in a set time period over the entire time period during which the engine is operating,
the control means reduces the power of the engine and the power of the hydraulic pump in stages as the ratio of the time during which the engine is idling increases.
2. A work machine, comprising:
an engine;
a hydraulic pump that is operated by rotational power of the engine to discharge hydraulic oil;
a remote information management device that stores a plurality of modes set for controlling the engine and the hydraulic pump in a variety of ways in consideration of one or more of a work type, a work area, and a work intensity; and
a control device that controls one or more of the engine and the hydraulic pump according to a mode selected from the plurality of modes at the telematics device,
the telematics device stores data for cumulatively calculating a ratio of a time during which the engine is idling in a set time period over the entire time period during which the engine is operating,
the plurality of modes stored in the telematics device are set to be capable of controlling a travel speed or a fuel consumption amount in stages in proportion to a ratio of a time during which the engine is idling,
the telematics device selects one of a plurality of modes according to a current ratio of times the engine is idling,
the control means controls the engine or the hydraulic pump to adjust the travel speed or the fuel consumption amount according to the mode selected at the telematics device.
3. A working machine according to claim 1 or 2,
the remote information management device can remotely exchange information with the remote information management device of a server provided outside or another construction machine that performs the same work in the same set area.
4. A working machine according to claim 3,
when the remote information management device cannot cumulatively calculate the ratio of the time during which the engine is idling in the entire time during which the engine is operated for a predetermined time period due to an initial operation period of the construction machine or an error in the acquired information, the remote information management device receives data stored in the remote information management device of another construction machine that performs the same work in the same set area, selects one of the plurality of modes, and transmits the selected mode to the control device.
5. A working machine according to claim 2,
the data obtained by cumulatively calculating the ratio of the time during which the engine is idling to the total time of the engine calculation over a set time period can be ignored, and the operator can operate the remote information management device to forcibly select one of the plurality of modes.
6. A working machine according to claim 5,
the working machine also comprises a brake pedal used in braking,
when the engine rotates at a preset rotation speed or less, an operator can input a password to the remote information management device in a state where the brake pedal is depressed and can forcibly select one of the plurality of modes.
7. A working machine according to claim 2,
the range of the travel speed or the fuel consumption amount can be adjusted by an operator operating the remote information management device to change the ratio of the time during which the engine is idling for each of the plurality of modes.
8. A work machine, comprising:
an engine;
a hydraulic pump that is operated by rotational power of the engine to discharge hydraulic oil;
a remote information management device that stores a plurality of modes set for controlling the engine and the hydraulic pump in a variety of ways in consideration of one or more of a work type, a work area, and a work intensity; and
a control device that controls one or more of the engine and the hydraulic pump according to a mode selected from the plurality of modes at the telematics device,
the telematics device includes a satellite positioning system,
the telematics device stores data for calculating a ratio of a travel distance measured at the satellite positioning system over an entire work time,
the telematics device selects one mode from the plurality of modes according to a ratio of the travel distance.
9. A working machine according to any of claims 1, 2, 8,
the remote information management apparatus further includes a satellite positioning system for grasping a current position and a geographic information system for collecting map and topographic information,
a plurality of modes set to be able to control the travel speed or the fuel consumption in stages according to the terrain are stored in the telematics device,
the telematics device selects one of the plurality of modes according to a topography of a current location.
10. A working machine according to any of claims 1, 2, 8,
the remote information management device transmits a forced action command to the control device according to the selection of the operator,
if the transmission of the forced operation command is received, the control device ignores data or a plurality of modes stored in the remote information management device, and controls the engine and the hydraulic pump according to the forced operation command.
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| KR20170008081 | 2017-01-17 | ||
| KR10-2017-0008081 | 2017-01-17 | ||
| KR1020170111646A KR102494968B1 (en) | 2017-01-17 | 2017-09-01 | Construction machinery |
| KR10-2017-0111646 | 2017-09-01 |
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| CN1590660A (en) * | 2003-08-19 | 2005-03-09 | 株式会社小松制作所 | Construction machine |
| CN105040769A (en) * | 2014-04-24 | 2015-11-11 | 斗山英维高株式会社 | Integrated control apparatus and method for engine and hydraulic pump in construction machine |
| CN102844551B (en) * | 2010-05-20 | 2016-01-20 | 株式会社小松制作所 | Building machinery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101112136B1 (en) * | 2009-07-29 | 2012-02-22 | 볼보 컨스트럭션 이큅먼트 에이비 | Control System and Method Of Hybrid Type Construction Machine |
| US20140172269A1 (en) * | 2012-12-17 | 2014-06-19 | Caterpillar Inc. | Dual-Mode Cryogenic LNG Piston Pump Control Strategy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1590660A (en) * | 2003-08-19 | 2005-03-09 | 株式会社小松制作所 | Construction machine |
| CN102844551B (en) * | 2010-05-20 | 2016-01-20 | 株式会社小松制作所 | Building machinery |
| CN105040769A (en) * | 2014-04-24 | 2015-11-11 | 斗山英维高株式会社 | Integrated control apparatus and method for engine and hydraulic pump in construction machine |
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