JP5123891B2 - Work machine - Google Patents

Description

  The present invention relates to a work machine such as a hydraulic excavator, and more particularly to a means for collecting operation data in a work machine including a particulate matter collection filter that collects particulate matter contained in engine exhaust gas.

  In a work machine equipped with a diesel engine as a drive source of a hydraulic pump, a particulate matter collecting filter is provided to remove particulate matter contained in engine exhaust gas. Particulate matter collected in the particulate matter collecting filter is self-combusted because it is exposed to high-temperature engine exhaust gas during normal operation. For example, it is in a state waiting for dumping in a hydraulic excavator. When the load is light, the exhaust gas temperature does not reach a temperature at which self-combustion can be achieved, so that it does not self-combust but accumulates on the particulate matter collecting filter. In this case, it is necessary to control to regenerate the particulate matter collection filter by forcibly burning the accumulated particulate matter and preventing the particulate matter collection filter from degrading. Has been put to practical use in trucks and the like (for example, see Patent Document 1). As disclosed in this Patent Document 1, as a control for forcibly burning the particulate matter deposited on the particulate matter collection filter, manual regeneration control for starting the combustion of the particulate matter by an operator's manual operation When the particulate matter accumulation state in the particulate matter collection filter is detected and it is determined that a predetermined amount or more of particulate matter has accumulated on the particulate matter collection filter, the particulate matter is automatically burned. And automatic regeneration control to start.

  For work machines such as hydraulic excavators, in order to enable appropriate maintenance and management of individual work machines or to obtain basic data for new product development, for example, engine speed, engine exhaust gas temperature, engine Various data such as exhaust gas pressure, engine lubricating oil temperature, engine cooling water temperature, engine fuel consumption rate and hydraulic pump discharge pressure (this type of data is referred to as “operation data” in this specification). A device including an information collecting device for collecting is conventionally known (for example, see Patent Document 2).

JP 2003-27990 A JP 2007-207263 A

  However, in a work machine equipped with a conventional information collection device, since the operation data during normal work and the operation data during forced combustion of particulate matter are recorded in the information collection device without being distinguished, There is a problem that it is difficult to accurately determine the operating state of the work machine. That is, the operation data of the work machine is collected to determine the deterioration state of each part of the vehicle body, and the deterioration state of each part of the vehicle body is obtained by statistically processing the collected operation data. Therefore, if the collected operation data includes operation data during forced combustion of particulate matter, the frequency distribution obtained by statistical processing is the operation data during normal work. The operating state of the work machine cannot be accurately determined.

  The present invention has been made in order to solve the problems of the prior art, and the purpose thereof is the operation data of the work machine during normal operation and the operation data of the work machine during the regeneration operation of the particulate matter collecting filter. It is an object to provide a work machine provided with an information collecting device that can individually acquire the operating state of the work machine.

  In order to achieve the above object, according to the present invention, firstly, an information collecting device for collecting operation data of each part of a vehicle body including a diesel engine and a hydraulic pump driven by the diesel engine, and particulate matter contained in engine exhaust gas are provided. In a work machine including a particulate matter collecting filter to be collected and a control device for controlling driving of each part of the vehicle body and the information collecting device, the control device is configured so that each part of the vehicle body is in a normal operating state. Alternatively, when it is determined whether the particulate matter collecting filter is being regenerated, and when it is determined that the particulate matter collecting filter is being regenerated, operation information of each part of the vehicle body is obtained as the information collecting device. It was configured to record.

  As described above, since the regeneration operation of the particulate matter collecting filter is performed by increasing the engine load when not in operation, the control device detects the engine speed, the discharge pressure of the hydraulic pump, etc. It can be determined whether each part is in a normal operating state or whether the particulate matter collecting filter is being regenerated. When it is determined that the particulate matter collection filter is being regenerated, if the operation data of each part of the vehicle body is recorded in the information collecting device, the operation data of each part of the vehicle body during the regeneration operation of the particulate matter collection filter is Because it is possible to record the operation data of each part of the car body during normal operation separately from the data collection device, the operation data during normal operation and the operation data during regeneration operation of the particulate matter collection filter can be accurately Can be acquired.

  According to a second aspect of the present invention, in the first work machine, when the control device determines that the vehicle body parts are in a normal operation state, the operation data of the vehicle body parts is recorded in the information collecting device. It was configured as follows.

  According to this configuration, since the operation data during normal operation and the operation data during the regeneration operation of the particulate matter collection filter are recorded in the information collection device, the increase in useful operation data collected by the information collection device is increased. Can be planned.

  Thirdly, in the second work machine, the control device determines whether the vehicle body parts are in a normal operation state, operation data of the vehicle body parts, and the particulate matter collection filter. The operation data of each part of the vehicle body when it is determined that the reproduction operation is in progress is divided and recorded at different addresses of one recording means provided in the information collecting device.

  According to such a configuration, the information collecting apparatus includes a plurality of recording means, and the operation data at the time of normal operation and the operation data at the time of regeneration operation of the particulate matter collecting filter are separately recorded on the plurality of recording means. Compared to the case, the memory configuration of the information collecting apparatus can be simplified, and the cost of the information collecting apparatus and hence the work machine can be reduced.

  Fourthly, in the second or third work machine, the present invention relates to the operation data of each part of the vehicle body when it is determined that each part of the vehicle body is in a normal operation state, and the regeneration of the particulate matter collecting filter. The operation data of each part of the vehicle body when it is determined that it is in operation is configured to have a common format.

  According to such a configuration, since the format of the operation data during normal operation and the operation data during the regeneration operation of the particulate matter collection filter is common, it is easy and fast to record these operation data to the information collection device. It is possible to perform the comparison of each operation data.

  According to the fifth aspect of the present invention, in the first to fourth work machines, the operation data of each part of the vehicle body includes the exhaust gas inlet side temperature and the exhaust gas outlet side temperature of the particulate matter collection filter, and the outside air temperature. Made the configuration.

  According to such a configuration, the exhaust gas inlet side temperature and the exhaust gas outlet side temperature of the particulate matter collection filter and the outside air temperature, which are operation data peculiar to the work machine equipped with the particulate matter collection filter, are recorded in the information collection device. Therefore, maintenance management of the work machine provided with the particulate matter collecting filter can be appropriately performed.

  According to the sixth aspect of the present invention, in the first to fifth work machines, when the control device determines that the particulate matter collecting filter is being regenerated, the particulate matter collecting filter is regenerated. It is further determined whether the operation is automatically performed in accordance with a command from the control device during normal work or by an operator's manual operation, and the information collecting device has the particulate state. The operation data of each part of the vehicle body when the regeneration operation of the material collection filter is automatically performed in accordance with a command from the control device during normal work, and the regeneration operation of the particulate matter collection filter is performed manually by the operator. The operation data of each part of the vehicle body when it is performed is recorded.

  According to such a configuration, the operation data of each part of the vehicle body when the regeneration operation of the particulate matter collecting filter is automatically performed according to the command from the control device, and the operation of each part of the vehicle body when performed manually by the operator Since the data is recorded in the information collecting device, it becomes possible to obtain operation data of each part of the vehicle body during normal operation in a state where the regeneration operation of the particulate matter collecting filter is not performed. More reliable operation data can be accumulated regarding the performance of the deterioration and particulate matter collecting filter.

  Seventhly, in the sixth work machine, the control device, when the controller determines that each part of the vehicle body is in a normal operating state, and the particulate matter collecting filter Operation of each part of the vehicle body when the regenerating operation is automatically performed in accordance with a command from the control device during normal work, and when the regenerating operation of the particulate matter collecting filter is performed manually by an operator The operation data of each part of the vehicle body is divided and recorded at different addresses of one recording means provided in the information collecting device.

  According to this configuration, the information collecting apparatus includes a plurality of recording units, and the plurality of recording units include operation data of each part of the vehicle body when it is determined that each part of the vehicle body is in a normal operating state, and a particulate matter collecting filter. Operation data of each part of the vehicle body when the regeneration operation is automatically performed by a command from the control device during normal work, and each part of the vehicle body when the regeneration operation of the particulate matter collecting filter is manually performed by the operator Compared with the case of separately recording the operation data, the memory configuration of the information collecting device can be simplified, and the cost of the information collecting device and hence the work machine can be reduced.

  In the work machine of the present invention, the control device determines whether each part of the vehicle body is in a normal operating state or the particulate matter collecting filter is being regenerated, and the particulate matter collecting filter is being regenerated. When it is determined that the operation data of each part of the vehicle body is recorded in the information collection device, the operation data of each part of the vehicle body during the regeneration operation of the particulate matter collecting filter is referred to as the operation data of each part of the vehicle body during normal operation. It is possible to separately record the information in the information collection device, and it is possible to collect operation data that can accurately determine the state of the work machine.

1 is a system configuration diagram of a work machine according to an embodiment. It is a block diagram which shows the structure of the information collection apparatus which concerns on embodiment. It is a figure which shows the memory structure of the operation data recording part which concerns on embodiment. It is a flowchart which shows the operation data distinction procedure of the working machine which concerns on embodiment. It is a flowchart which shows the operation data recording procedure of the working machine which concerns on embodiment.

  Hereinafter, an embodiment of a work machine according to the present invention will be described with reference to the drawings. As shown in FIG. 1, the working machine of this example includes a diesel engine 1, a hydraulic pump 2 driven by the diesel engine 1, an actuator 3 driven by pressure oil discharged from the hydraulic pump 2, and a diesel engine. 1 and a monitoring device 4 for monitoring the operating state of the hydraulic pump 2 and the actuator 3, and the exhaust pipe 5 of the diesel engine 1 collects particulate matter contained in the engine exhaust gas. A collection filter 6 is provided. In addition, the working machine of this example includes a vehicle body control device 12, an information collection device 13, a monitor control device 14, and an engine control device 15 connected to each other via the vehicle body network 11, and the information collection device 13 The monitor control device 14 and the engine control device 15 operate according to instructions from the vehicle body control device 12. Further, the engine control device 15 includes a key switch 151 for instructing start / stop of the diesel engine 1, an engine control dial 152 for instructing a target rotational speed of the diesel engine 1, and a gate lock lever for restricting driving of the actuator 3. A position detector 153 for detecting the switching position is connected.

  Each part of the vehicle body including the diesel engine 1, the hydraulic pump 2, and the actuator 3 is provided with a plurality of sensors (not shown). The operation data of each part of the vehicle body detected by these sensors is transmitted to the vehicle body network 11. Via the information collection device 13. The operation data of each part of the vehicle body includes, for example, engine speed, engine exhaust gas temperatures on the inlet side and outlet side of the particulate matter collection filter 6, and engine exhaust gas on the inlet side and outlet side of the particulate matter collection filter 6. Examples include pressure, engine lubricating oil temperature, engine cooling water temperature, engine fuel consumption rate, hydraulic pump discharge pressure, and outside air temperature.

  As shown in FIG. 2, the information collection device 13 is in a normal operation state, whether the particulate matter collection filter 6 is being regenerated (manual regeneration control) according to an operator instruction, The operation determination unit 131 that determines whether the particulate matter collection filter 6 is automatically being regenerated (automatic regeneration control) based on a command from the vehicle body control device 12 and the operation determination unit 131 Depending on the results, each sensor is used to record operating data when the work machine is in a normal operating state, operating data when the work machine is under manual regeneration control, and operating data when the work machine is under automatic regeneration control. The operation data recording unit 132 that captures and records from the data, and the operation data recorded in the operation data recording unit 132 centrally manages the operation data related to a large number of work machines. To the management center to perform maintenance or the like and a operation data transmission unit 133 for wirelessly transmitting.

  The operation determination unit 131 is configured so that the working machine normally operates based on the sensors provided in each part of the vehicle body and the output signals from the key switch 151, the engine control dial 152, and the position detector 153 connected to the engine control device 15. It is determined whether it is in the operating state, whether manual regeneration control is being performed, or whether automatic regeneration control is being performed.

  That is, the key switch 151 is switched to the ON position to start the diesel engine 1, the engine control dial 152 is switched to a position for setting the target engine speed to the engine speed for regeneration control, and the gate lock lever. Is output from the position detector 153, it is determined that the manual regeneration control of the particulate matter collection filter 6 is being executed. Further, the key switch 151 is switched to the ON position to start the diesel engine 1, the engine control dial 152 is switched to a position for setting the target engine speed to the engine speed for regeneration control, and the gate lock lever. Is output from the position detector 153, indicating that the detection value of the pressure detector for detecting the exhaust resistance of the diesel engine 1 is preset. When it exceeds the predetermined value, it is determined that the automatic regeneration control of the particulate matter collecting filter 6 is being executed. Further, the key switch 151 is switched to the ON position to start the diesel engine 1, the engine control dial 152 is switched to a position for setting the target engine speed to the working speed, and the gate lock lever is When an output signal indicating that the actuator 3 has been operated to a position where the actuator 3 can be driven is output from the position detector 153, the detection value of the pressure detector that detects the exhaust resistance of the diesel engine 1 is set in advance. When the value is equal to or less than the value, it is determined that the normal operation state is set.

  As shown in FIG. 3, the operation data recording unit 132 is divided into a plurality of memory areas 132a, 132b, 132c,... Having different addresses. Operation data under control and operation data under automatic regeneration control are recorded separately. In this way, operation data during normal work that does not include operation data during manual regeneration control and operation data during automatic regeneration control can be acquired independently, so it is possible to accurately determine the state of deterioration of the work machine, etc. In addition, since the operation data during the manual regeneration control and the operation data during the automatic regeneration control can be individually acquired, the data can be useful for developing a new product.

  The operation data recorded in each of the memory areas 132a, 132b, 132c,... Has a common format. Thereby, the operation data can be recorded easily and at high speed, and each operation data can be easily compared.

  In the above-described embodiment, the operation determination unit 131 determines three items: whether the work machine is in a normal operation state, whether it is in manual regeneration control, or in automatic regeneration control. Instead of the configuration, a configuration may be adopted in which two items are determined as to whether the work machine is in a normal operating state or under regeneration control.

  Hereinafter, an operation data distinction procedure and an operation data recording procedure will be described by taking as an example a case where the operation determination unit 131 determines two items of whether the work machine is in a normal operation state or under reproduction control. .

  As shown in FIG. 4, the operation data distinction procedure includes, for example, operation data obtained by obtaining operation data for determining an operation state of a work machine such as an engine speed from sensors or the like (step S <b> 1). Is determined to indicate that regeneration control of the particulate matter collection filter 6 is being performed (step S2). In step S2, it is determined that the particulate matter collection filter 6 is being subjected to regeneration control. If yes (Yes), the process proceeds to step S3, and a flag indicating that reproduction control is being performed is set in the operation data. If it is determined in step S2 that the particulate matter collection filter 6 is not under regeneration control (No), the process proceeds to step S4, and the flag indicating that regeneration control is in progress is deleted in the operation data. To do.

  The operation data recording procedure is performed for operation data for which the distinction of operation states described in FIG. 4 has been executed. That is, as shown in FIG. 5, whether or not a flag indicating that reproduction control is being performed is set on the earned operation data after acquiring the operation data in which the distinction of the operation state is executed (step S <b> 11). Is determined (step S12), and if it is determined in step S12 that a flag indicating that reproduction control is being performed is set on the acquired operation data (Yes), the process proceeds to step S13, and the operation is performed. The data is stored in the memory area 132b of the operation data recording unit 132. If it is determined in step S12 that the acquired operation data does not have a flag indicating that reproduction control is being performed (No), the process proceeds to step S14, and the operation data is recorded as operation data recording. The data is stored in the memory area 132a of the unit 132.

  Thereby, the operation data when the work machine is in a normal operation state and the operation data when the reproduction machine is under reproduction control can be distinguished and recorded in the operation data recording unit 132.

  The present invention can be used for maintenance management of work machines such as hydraulic excavators.

DESCRIPTION OF SYMBOLS 1 Diesel engine 2 Hydraulic pump 3 Actuator 4 Monitor apparatus 5 Exhaust pipe 6 Particulate matter collection filter 11 Car body network 12 Car body control apparatus 13 Information collection apparatus 14 Monitor control apparatus 15 Engine control apparatus 131 Operation determination part 132 Operation | movement data recording part 132a , 132b, 132c,... Memory area 133 Operation data transmission unit 151 Key switch 152 Engine control dial 153 Position detector

Claims (7)

An information collecting device for collecting operation data of each part of the vehicle body including a diesel engine and a hydraulic pump driven by the diesel engine, a particulate matter collecting filter for collecting particulate matter contained in engine exhaust gas, each part of the vehicle body, and In a work machine comprising a control device for controlling the drive of the information collection device,
The control device determines whether each part of the vehicle body is in a normal operating state or whether the particulate matter collecting filter is being regenerated, and if the particulate matter collecting filter is being regenerated. When determined, the working machine records operation data of each part of the vehicle body in the information collecting device.   2. The work machine according to claim 1, wherein the control device records operation data of each part of the vehicle body in the information collecting device when it is determined that each part of the vehicle body is in a normal operation state.   The control device, the operation data of each part of the vehicle body when it is determined that each part of the vehicle body is in a normal operating state, and each part of the vehicle body when it is determined that the particulate matter collecting filter is being regenerated. 3. The work machine according to claim 2, wherein the operation data is divided and recorded at different addresses of one recording means provided in the information collecting device.   The operation data of each part of the vehicle body when it is determined that each part of the vehicle body is in a normal operation state, and the operation data of each part of the vehicle body when it is determined that the particulate matter collection filter is being regenerated are The working machine according to any one of claims 2 and 3, wherein the working machines are common.   5. The operation data of each part of the vehicle body includes an exhaust gas inlet side temperature and an exhaust gas outlet side temperature of the particulate matter collecting filter, and an outside air temperature. 6. Working machine.   If the control device determines that the particulate matter collection filter is being regenerated, the control device automatically performs the regeneration operation of the particulate matter collection filter according to a command from the control device during normal operation. Whether or not the operation is performed manually by an operator, and the information collection device is instructed to regenerate the particulate matter collection filter during normal operation. The operation data of each part of the vehicle body when automatically performed according to the above, and the operation data of each part of the vehicle body when the regeneration operation of the particulate matter collecting filter is manually performed by an operator are recorded. The work machine according to any one of claims 1 to 5.   The control device operates according to a command from the control device during normal operation of operation data of each part of the vehicle body when it is determined that each part of the vehicle body is in a normal operation state, and regeneration operation of the particulate matter collecting filter. Operation information of each part of the vehicle body when automatically performed, and operation data of each part of the vehicle body when the regeneration operation of the particulate matter collecting filter is manually performed by an operator are stored in the information collecting device. 7. The work machine according to claim 6, wherein recording is performed by dividing into different addresses of one recording means provided.

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