JP5541940B2 - Mobile farm machine - Google Patents

Description

  The present invention relates to a mobile agricultural machine such as a combine.

  It is widely known that exhaust gas discharged from engines such as diesel engines contains minute solids (particulates, graphite) such as soot that are harmful substances that cause environmental pollution. Fine solids can be removed by a removal filter called an exhaust particulate removal device. Due to the recent increase in interest in environmental problems, this removal filter can be used not only for automobiles such as passenger cars and large trucks. There is a growing need for mounting on mobile agricultural machines such as combines, transplanters and tractors.

  By the way, since this removal filter captures and removes fine solids in the exhaust gas by its filtering function, the captured fine solids accumulate on the surface of the removal filter as an adhering substance, and as time passes There is a problem that air permeability and removal function are lowered.

  In order to remedy this problem, there is a regeneration means shown in Patent Document 1 that regenerates the filtering function of the removal filter by removing the deposits attached to the surface of the removal filter by heating the removal filter with high-temperature exhaust gas from the engine. It is publicly known.

JP 2009-167950 A

  In the regeneration means described in the above document, it is possible to perform the function regeneration operation of the removal filter efficiently and stably by stabilizing the temperature of the exhaust gas at a high temperature, but the engine speed and engine load are unstable. In this case, it is difficult to perform the function regeneration operation of the efficient removal filter.

  In particular, since the mobile agricultural machine includes one or a plurality of work machines that are driven by power from the engine, turning the work machine on and off tends to change the engine speed and the engine load.

  The present invention is provided with a removal filter that removes fine solids from exhaust gas discharged from an engine, and a regeneration unit that regenerates the function of the removal filter by removing the deposits attached to the removal filter by heating. It is an object of the present invention to provide a mobile agricultural machine capable of stably performing a function regeneration operation of a removal filter.

Mobile agricultural machine of the present invention for solving the above problems, have one or more working machines are driven by the power from the engine 11, a rejection filter 14 for removal of fine solids in the exhaust gas of the engine 11 The regeneration means for regenerating the function of the removal filter 14 by removing the deposits attached to the removal filter 14 by heating, the regeneration control of the removal filter 14 via the regeneration means, and the drive control of each work machine A drive operation detecting means 34 for detecting an operation for driving the work implement, and a regeneration operation detecting means 36 for detecting an operation for executing the regeneration control of the removal filter 14. , if the operation for executing the regeneration control of the removal filter 14 by the reproducing operation detecting means 36 and body is detected is stopped, the playback Start the control waits for the lapse of a predetermined time from the start to completion of the regeneration control, further, in the middle of performing a reproduction control of the removal filter 14 through the reproducing means, the work by the driving operation detection means 34 If an operation for driving the machine is detected, the operation is canceled and the work machine is not driven, but is removed by the regeneration operation detecting means 36 while at least one of the work machines is being driven. When an operation for performing the regeneration control of the filter 14 is detected, the operation is canceled and the regeneration control of the removal filter 14 is not performed .

  According to the configuration of the present invention, during the regeneration control of the removal filter, the operation of driving the work machine is canceled, the work machine is not driven, and fluctuations in engine speed and engine load can be suppressed. In addition to the stable regeneration of the function of the removal filter, it is possible to prevent the work machine from being unintentionally driven by an erroneous operation during the regeneration control of the removal filter.

  In addition, a regeneration operation detecting means for detecting an operation for executing the regeneration control of the removal filter is provided, and the control unit detects the operation of the removal filter by the regeneration operation detecting means while at least one work machine is being driven. When an operation for executing the regeneration control is detected, the operation is canceled and the regeneration control of the removal filter is not performed. Therefore, the regeneration control becomes unstable in a state where the engine speed and the engine load are not stable. In addition to being able to efficiently prevent the execution, it is possible to prevent the removal filter regeneration control from being started unintentionally due to an erroneous operation while the work implement is being driven.

It is a whole side view of the self-removing combine to which the present invention is applied. It is a top view which shows the structure of a control part. It is a top view which shows the structure of a meter unit. It is a top view which shows the structure of a subtransmission lever. It is a control block diagram of this combine. It is a timing chart figure which shows the control content of this combine.

  FIG. 1 is an overall side view of a self-removing combine to which the present invention is applied. A combine that is a type of mobile farm machine is a threshing portion (not shown) on the left half (hereinafter left) side in the traveling direction on the machine frame 2 supported by a pair of left and right crawler type traveling devices (traveling portions) 1L, 1R. In addition, the traveling body 6 is configured by providing the steering unit 3 on the front side and the Glen tank 4 on the rear side in the right half of the body frame 2. A pre-processing unit 7 is connected to the front side of the traveling machine body 6 so as to be movable up and down.

  During traveling in the field, in the pre-processing unit 7, the cereal grains in the field, which are weeded by the divider 8 and guided to the pulling device 7a side, are pulled by the pulling device 7a and then cut by the cutting blade 7b. Then, it is conveyed to the threshing portion side at the front end of the traveling machine body 6 by the conveying device 7c. The cereals conveyed to the threshing unit side are transferred to a threshing feed chain (not shown), and in the process of being conveyed backward by the threshing feed chain, they are handled by a handling cylinder (not shown) and become waste. .

  The waste is transported rearward by a waste transporting body (not shown) and discharged from the rear end of the traveling machine body 6 to the outside of the machine. On the other hand, the processed product that has been handled and threshed by a handling cylinder or the like is scoured by a swing sorter (not shown) or by a sorting wind generated by a tang fan, etc. The sawdust and the like are discharged from the rear end of the traveling machine body 6 to the outside of the machine, and the grains are conveyed to the glen tank 4 and stored therein.

  The grain in the grain tank 4 is discharged out of the machine by a cylindrical auger 9 whose base end is supported on the right side of the rear end portion of the traveling machine body 6. Incidentally, the auger 9 is supported so as to be able to swing up and down and turn left and right, and an auger discharge spiral (not shown) is housed therein, and this auger discharge spiral is an auger discharge motor (not shown) that is a hydraulic motor. ), The grain in the grain tank 4 is discharged from the tip side of the auger 9.

  The threshing feed chain and the above-mentioned various devices on the pre-processing unit 7 side, and the like include the reaping side working unit that performs reaping and transporting processing of the cereal, the handling cylinder, the swing sorter, and the like. The threshing side working unit for performing the threshing / sorting process and the above-described crawler type traveling devices 1L and 1R are respectively driven by engine power.

  The engine 11 is housed in an engine room (not shown) that is formed directly below the seat 12 on which the operator of the control unit 3 is seated and that is open on the outside (right side in the illustrated example). The diesel engine is fixedly installed, and the open side of the engine room is covered with an openable / closable engine cover 13.

  The power transmission structure will be described. The above-mentioned mowing side working unit has a stepless transmission of engine power through a transfer HST (not shown) which is a hydraulic stepless transmission that transmits power steplessly. Is done. In addition, in the power transmission path from the transport HST to the preprocessing unit 7 side (specifically, the pulling device 7a, the cutting blade 7b, the transporting device 7c, etc.), the transmission of engine power to the preprocessing unit 7 side is performed. An intermittent mowing clutch (not shown) is arranged. Incidentally, since the power transmission path from the transport HST to the pre-processing unit 7 and the power transmission path from the transport HST to the threshing feed chain are provided independently from each other, the above-described threshing may be caused by the intermittent connection of the cutting clutch. The power transmission to the feed chain is not interrupted.

  Engine power is intermittently transmitted to the above-described threshing side working unit via a threshing clutch (not shown). By the way, in the illustrated combine, a threshing clutch is arranged in the middle of the power transmission path from the engine 11 to the transport HST, so that the power transmission to the threshing operation part side is cut by the cutting operation of the threshing clutch. Also, the power transmission to the mowing side is cut off.

  Engine power is transmitted to the left and right crawler type traveling devices 1L and 1R through a sub-transmission device and a main transmission device (not shown) constituting the traveling transmission device. The main transmission is configured by a traveling HST that is a hydraulic continuously variable transmission that continuously transmits power from the engine 11. The auxiliary transmission is arranged in the middle of the power transmission path from the traveling HST to each of the crawler type traveling devices 1L and 1R, and is configured such that the transmission is switched by a mechanical switching operation via a shift member (not shown). Has been.

  Incidentally, the sub-transmission device is switched to a high speed state in which high speed power is transmitted to the crawler type traveling devices 1L and 1R for traveling on the road and the like, and the crawler type traveling devices 1L and 1R are operated at a low speed for working traveling in the field. Switching to a low speed state where power is transmitted, switching to a neutral state where power transmission to each crawler type traveling device 1L, 1R is interrupted, and forward rotation power to one side of the left and right crawler type traveling devices 1L, 1R The shift member performs the switching to the spin turning state in which the airframe is turned left and right on the spot by transmitting the reverse power to the other side while transmitting.

  In addition, the above-described auger discharge motor is driven by hydraulic oil that is pumped by a hydraulic pump that is driven by engine power.

  In this manner, a plurality of work machines such as the pretreatment unit 7, the threshing feed chain, and the threshing side work machine unit are driven by the engine power, but are contained in the exhaust gas discharged from the engine 11. Such harmful fine solids are removed by a removal filter 14 called DPF (registered trademark).

  The exhaust gas introduced from the engine 11 to the removal filter 14 through the introduction pipe 16 is discharged outside the apparatus through the exhaust pipe 17 after the fine solids are removed by the removal filter 14. Since the removal filter 14 is configured to capture the fine solid matter from the exhaust gas that passes through, the fine solid matter or the like that has been captured on the surface adheres to the surface and accumulates as time passes. . When the amount of deposits increases, the air permeability deteriorates and the filtering function of the removal filter 14 decreases, and the pressure difference between the introduction pipe 16 and the exhaust pipe 17 increases, and various problems may occur. There is.

  For this reason, the combine is provided with a regenerating means for removing the adhering matter adhering to the removal filter 14 by heating and regenerating its filtering function. This regeneration means is constituted by an engine control microcomputer 18 (see FIG. 5) called an ECU capable of controlling the engine speed and the engine 11 itself.

  The engine control microcomputer 18 is connected to a microcomputer 19 (see FIG. 5), which is a main control unit, through a serial connection, a CAN (Controller Area Network) connection, and the like so as to be able to communicate with each other. The engine 11 is controlled via the engine control microcomputer 18 so as to be substantially constant in a state where the number is high (so as to be stable), and the temperature of the exhaust gas is raised. The surface is heated to remove the deposits.

  The microcomputer 19 performs regeneration control for stably and efficiently performing the filtering function regeneration of the removal filter 14 via the regeneration means, and also one or a plurality (in the illustrated example, plural) of the above-described drives driven by engine power. It is also configured to perform drive control of the working machine. Note that the engine speed may be controlled in the main microcomputer 19 without providing the engine control microcomputer 18, and in this case, the microcomputer 19 and the engine 11 constitute a reproducing means.

Next, the configuration of the control unit 3 and the microcomputer 11 will be described in detail with reference to FIGS.
FIG. 2 is a plan view showing the configuration of the control unit, FIG. 3 is a plan view showing the configuration of the meter unit, and FIG. 4 is a plan view showing the configuration of the auxiliary transmission lever. In addition to the above-described seat 12, the control unit 3 includes a front operation panel 21 in front of the seat 12, a side operation panel 22 on the side (more specifically, on the left side), and a rear operation panel 23 on the rear. In addition, a floor step 24 serving as a floor surface is formed between the seat 12 and the front operation panel 21 in plan view.

  On the right side of the front operation panel 21, a multi-lever 26, which is a lever operation tool that functions as a lifting operation tool and a steering operation tool of the preprocessing unit 7, is attached and supported so as to be able to swing back and forth and swing left and right. A meter unit 27 is installed on the left side of the operation panel 21.

  The multi-lever 26 moves the pre-processing unit 7 up and down by swinging back and forth, and also steers the machine body by swinging left and right. The meter unit 27 is provided with a meter 28 that displays the engine speed and a regeneration indicator 29 that is a lamp that is lit during the regeneration control so as to be visible from the seat 3 side.

  The rear operation panel 23 is provided with a push button type fir discharge switch 31 that is a discharge operation tool for driving and stopping the auger discharge spiral through an auger discharge motor by an on / off operation.

  The side operation panel 22 includes a main transmission lever 32 that is a main transmission operation tool that performs a traveling shift operation via the traveling HST, and a sub-transmission lever that is a sub-transmission operation tool that performs a traveling transmission device via the auxiliary transmission. 33 and a power clutch switch (drive operation detecting means) 34 which is an intermittent operation tool for performing the intermittent operation of the above-described threshing clutch and reaping clutch.

  The main transmission lever 32 is formed with a grip 32a at the tip protruding upward from the side operation panel 22, and its base end changes the inclination of the swash plate of the traveling HST, thereby eliminating the traveling HST. It is mechanically connected to a trunnion shaft (not shown) that is an operation shaft that performs a shift operation in stages, and swings to the left and right (right side in the illustrated example) end of the main transmission lever 32 at the neutral position. By this, it becomes possible to swing forward, while it becomes possible to swing backward by swinging to the left and right ends at the neutral position.

  As the amount of forward swing from the neutral position increases, the travel HST is accelerated toward the aircraft forward travel side. On the other hand, as the amount of backward swing from the neutral position increases, the travel HST is accelerated toward the aircraft backward travel side. The That is, the main transmission lever 32 is configured to perform a stepless shifting operation by swinging back and forth and to perform a forward / reverse switching operation by swinging left and right at the neutral position. Incidentally, the swinging guide of the main transmission lever 32 is performed by a guide hole 22a that is formed in the side operation panel 22 and through which a middle portion of the main transmission lever 32 is inserted.

  The auxiliary transmission lever 33 is formed with a grip 33a at a distal end protruding upward from the side operation panel 22, and a base end thereof is mechanically connected to a shift member of the auxiliary transmission. A traveling shift operation is performed via the auxiliary transmission by swinging the shift lever 33 back and forth.

  Specifically, the front / rear neutral position of the auxiliary transmission lever 33 is a neutral position N where the auxiliary transmission is switched to the neutral state, and the backward swing position of the auxiliary transmission lever 33 is the low speed position L where the auxiliary transmission is switched to the low speed state. Thus, the forward swing position of the sub-transmission lever 33 becomes a high-speed position H at which the sub-transmission device is switched to a high speed state, and the sub-transmission lever 33 swings from the low-speed position to the left and right side (left side in the illustrated example) end. The moving position becomes the turning position S at which the auxiliary transmission is switched to the spin turning state.

  In addition, the sub-shift lever 33 is configured to be swingable in the left-right direction at the neutral position N. By this left-right swing operation, the sub-shift lever 33 at the neutral position moves to the low speed position L and the high speed position H. Can be swung to either the normal position N1 where the forward / backward swing is allowed or the reproduction position N2 where the forward / backward swing is not allowed. Incidentally, the swinging guide of the auxiliary transmission lever 33 is performed by a guide hole 22b that is formed in the side operation panel 22 and through which the middle portion of the auxiliary transmission lever 33 is inserted.

  On the proximal end side of the sub-transmission lever 33, a manual regeneration switch (detection means, regeneration operation detection means) that detects a lateral swing operation from the normal position N1 to the regeneration position N2 at the neutral position N of the sub-transmission lever 33. 36 (see FIG. 5) is provided, and when this means regeneration switch 36 detects a left-right swing operation from the normal position N1 to the regeneration position N2 at the neutral position N of the auxiliary transmission lever 33, it will be described later. If the predetermined condition is satisfied, the microcomputer 19 performs the reproduction control described above. That is, the left / right swinging operation from the normal position N1 to the regeneration position N2 at the neutral position N of the auxiliary transmission lever 33 is an operation for executing the regeneration control of the removal filter 14.

  The power clutch switch 34 is a momentary switch that can be operated to push both left and right ends separately. The operation of pushing the left and right ends of the power clutch switch 34 is a drive side where a drive signal is input to the microcomputer 19 side. An operation of pushing the left and right ends of the power clutch switch 34 is a stop-side operation in which a stop signal is input to the microcomputer 19 side. Incidentally, how the mowing clutch and the threshing clutch are intermittently controlled based on the drive side operation and the stop side operation will be described later.

  The floor step 24 is formed at a position lower than any of the seat 12, the front operation panel 21, the side operation panel 22, and the rear operation panel 23. This combine is provided with a parking brake (not shown) that parks the aircraft on the spot by stopping the aircraft. On the left part of the floor step 24, the parking brake is parked and released. A parking brake pedal 37 serving as a parking brake operating tool for performing an operation (on / off operation) is provided.

  Specifically, the parking brake pedal 37 has a parking operation posture in which the parking brake is operated by parking in the horizontal direction forward, and a release operation posture in which the parking brake is released by inclining upward toward the front. It is supported so that it can swing up and down so that the posture can be switched, and is configured to switch between the parking operation posture and the release operation posture of the parking brake pedal 37 every time the operator steps down. By switching, the airframe is switched between a parking state and a non-parking state.

  FIG. 5 is a control block diagram of this combine. As described above, the microcomputer 19 is connected to the engine control microcomputer 18 so that bidirectional communication is possible. Further, on the input side of the microcomputer 19, in addition to the manual regeneration switch 36, the power clutch switch 34, and the fir discharge switch 31 described above, a main shift lever that is a shift operation position detecting means for detecting a forward / backward swing angle of the main shift lever. A potentiometer 38 and a parking brake switch (parking operation detecting means) 39 for detecting the parking operation posture of the parking brake are connected to each other.

  On the output side of the microcomputer 19, in addition to the regeneration indicator 29 described above, a conveyance HST control motor 41 that is a driving speed changing means, and a threshing / reaping clutch motor 42 that is an intermittent means for intermittently connecting the reaping clutch and the threshing clutch. And an auger discharge solenoid 43 which is an auger discharge control means for driving / stopping the auger discharge motor by controlling the supply / discharge of hydraulic oil to / from the auger discharge motor.

  The transport HST control motor 41 is configured to rotationally drive a trunnion shaft that is an operation shaft for changing the tilt of the swash plate of the transport HST, and the tilt of the swash plate is changed by driving the transport HST control motor 41. The transport HST is steplessly shifted.

  The microcomputer 19 indirectly detects the traveling speed (vehicle speed) of the combine by using the main transmission lever potentiometer 38, and interlocks the driving speed of the threshing feed chain and the preprocessing unit 7 with the detected vehicle speed via the transport HST. It is configured to perform vehicle speed interlocking control. Specifically, when the traveling is stopped, the transport HST is set to neutral to stop the driving of the threshing feed chain and the preprocessing unit 7, while the driving speed of the threshing feed chain and the preprocessing unit 7 is increased as the vehicle speed increases during traveling. Is proportionally increased, and the driving speed of the threshing feed chain and the pre-processing unit 7 is proportionally decreased as the vehicle speed decreases during traveling.

  The microcomputer 19 also includes a cutting mode in which both the cutting clutch and the threshing clutch are in a disconnected state, a handling mode in which the cutting clutch is in a disconnected state while the threshing clutch is in a connected state, and both the cutting clutch and the threshing clutch. There are connection modes to be connected, and these modes are switched by driving side operation and stop side operation of the power clutch switch 34.

  Specifically, the microcomputer 19 shifts to the handling mode when the driving side operation is detected in the cutting mode, and shifts to the connection mode when the driving side operation is detected in the handling mode. When the stop side operation is detected in the mode, the mode is shifted to the disconnect mode, and when the stop side operation is detected in the connection mode, the mode is shifted to the handling mode. Incidentally, in the connection mode, as a general rule, the microcomputer 19 is configured so that the vehicle speed interlocking control described above is performed.

  When the microcomputer 19 detects the ON state (ON state) of the fir discharge switch 31, the microcomputer 19 drives the auger discharge spiral through the auger discharge solenoid 43, while the fir discharge switch 31 is in the OFF state (OFF state). ) Is detected, the auger discharge spiral is brought into a drive stop state via the auger discharge solenoid 43.

  Further, when the microcomputer 19 detects the swinging operation of the auxiliary transmission lever 33 to the regeneration position N2 by the turning-on operation (ON operation) of the manual regeneration switch 36, the microcomputer 19 is switched to the above-described disconnection mode. Only when it is detected that the parking brake pedal 37 is parked and switched to the parking posture by the on state (ON state) of the parking brake switch 39, the regeneration control through the above-described regeneration means is performed. Start.

  On the other hand, the microcomputer 19 is not switched to the above-described disconnection mode even when the swing operation to the regeneration position N2 of the auxiliary transmission lever 33 is detected by turning on the manual regeneration switch 36 (ON operation). The state where the parking brake pedal 37 is not operated is detected depending on the state (specifically, the state switched to the handling mode or the connection mode) or the parking brake switch 39 being turned off (OFF state). In such a case, the reproduction control via the reproduction means described above is not executed.

  This regeneration control is terminated when a predetermined time T has elapsed from the start, but during the execution of this regeneration control, even if a drive side operation of the power clutch switch 34 is detected, the drive side operation is canceled. Therefore, the microcomputer 19 is configured so as not to shift to the handling mode. Further, the microcomputer 19 turns on the playback indicator 29 while the playback control is being executed, and turns off the playback indicator 29 when the playback control is not being executed.

  That is, the regeneration control is started due to the left / right swing operation to the regeneration position N2 of the auxiliary transmission lever 33. At this time, in a state where the airframe is reliably stopped even on an inclined ground by the parking brake, Since the regenerating operation of the filtering function is performed via the regenerating means, it becomes easy to perform the regenerating operation stably, and the preprocessing unit 7 driven by the engine power and controlled by the microcomputer 19 is threshing. The engine speed and engine load are stable because the start of regeneration control is canceled in the handling mode or connection mode that is driven by one or more work machines such as the feed chain or the threshing side working unit. Thus, the regeneration control can be executed efficiently. In addition, during the regeneration control, the transition to the handling mode and the connection mode is canceled and the work machine is prevented from being driven, so the engine speed and the engine load change during the regeneration control. This is also prevented.

  FIG. 6 is a timing chart showing the control content of this combine. In the example shown in the figure, first, the microcomputer 19 is switched to the disconnect mode, the main transmission lever 32 is operated to the neutral position, the auxiliary transmission lever 33 is operated to a position other than the regeneration position N2, and the parking brake pedal 37 is released. Operated to posture. In this state, the engine 11 is rotated at a predetermined low rotational speed (idling rotation) so as to be in an idling state via the engine control microcomputer 18, and the transport HST is switched to the neutral state.

  Subsequently, the sub-shift lever is swung to the regeneration position N2 (see FIG. 3a). At this time, since the parking brake pedal is in the released posture and the aircraft is in the non-parking state, the regeneration control is executed. Canceled. Thereafter, the auxiliary transmission lever is returned to a position other than the reproduction position N2.

  Subsequently, when an operation on the drive side of the power clutch switch 34 is detected (see b in the figure), the mode shifts to the hand-handling mode, and only the threshing clutch is connected among the threshing clutch and the mowing clutch, and the engine control microcomputer 18 , The engine 11 is rotated at a predetermined high rotation speed (rated rotation), but the threshing side working unit and the threshing feed chain are driven at low speed by the low speed transmission of the transport HST. In this state, the operator can manually handle the harvested cereals to the threshing feed chain and perform a handing operation for threshing the cereals.

  Subsequently, when the driving side operation of the power clutch switch 34 is detected (see c in FIG. 5), the mode shifts to the connection mode, both the threshing clutch and the mowing clutch are connected, and the engine 11 is held at the rated rotation. Then, vehicle speed interlocking control is started.

  If the vehicle speed is changed via the main shift lever 32 during the vehicle speed interlocking control (see d in the figure), the driving speeds of the preprocessing unit 7 and the threshing feed chain are changed via the transport HST in conjunction with the vehicle speed. Is done.

  Subsequently, when a stop-side operation of the power clutch switch 34 is detected (see e in the figure), the mode shifts to the hand-handling mode, and only the threshing clutch is connected among the threshing clutch and the mowing clutch, and the engine 11 is It is held in a rotated state, the vehicle speed interlocking control is terminated, and the low speed driving of the threshing side working unit and the threshing feed chain is started.

  Subsequently, when a stop-side operation of the power clutch switch 34 is detected (see f in the same figure), the mode shifts to a cutting mode, both the threshing clutch and the reaping clutch are disconnected, and the transport HST enters a neutral state, and engine control is performed. The engine 11 is idling and rotated through the microcomputer 18 to enter an idling state.

  Subsequently, after the parking brake pedal 37 is parked (see g in the same figure), when the swing operation to the regeneration position N2 of the auxiliary transmission lever 33 is detected (see h in the same figure), the predetermined condition described above is satisfied. Since the state is satisfied, the reproduction control is executed and the reproduction indicator 29 is lit.

  While the regeneration control is being executed, the engine 11 is rotated at the rated speed. At this time, even if the drive side operation of the power clutch switch 34 is detected (see i in FIG. 5), the drive side operation is canceled and There is no transition to handling mode. When the predetermined time T elapses from the start of the regeneration control, the regeneration control is terminated and the regeneration indicator 9 is turned off even when the sub-shift lever is operated to the regeneration position N2.

  During execution of the regeneration control, the traveling HST may be shifted through the main shift lever 32 so that a constant load is stably applied to the engine 11.

11 Engine (diesel engine)
14 Removal filter (exhaust particulate removal device)
19 Microcomputer (control unit)
34 Power clutch switch (drive operation detection means)
36 Manual regeneration switch (regenerative operation detection means, detection means)

Claims (1)

A removal filter (14) having one or a plurality of work machines driven by power from the engine (11) and removing fine solids in the exhaust gas of the engine (11), and a removal filter (14) A regeneration unit that regenerates the function of the removal filter (14) by removing the adhered deposits by heating, a regeneration control of the removal filter (14) through the regeneration unit, and a drive control of each work machine. A drive operation detection means (34) for detecting an operation for driving the work implement, and a regeneration operation detection means (36) for detecting an operation for executing the regeneration control of the removal filter (14). the door is provided, the control unit (19), when the operation for executing the regeneration control is detected and fuselage removed by regeneration operation detecting means (36) filter (14) is stopped Starts the reproduction control, waits for the elapse of a predetermined time from the start to completion of the regeneration control, further, in the middle of performing a reproduction control removal through the regeneration means filter (14), the driving operation detection If an operation for driving the work implement is detected by the means (34), the operation is canceled and the work implement is not driven , while the at least one work implement is being driven, A mobile farm machine that cancels the operation and does not execute the regeneration control of the removal filter (14) when the operation detecting means (36) detects the operation of performing the regeneration control of the removal filter (14) .

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