JP2007082448A - Display device of working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device of a working machine which is designed to display what state of speed change a speed changer is in the plurality of states of speed change in an easily judgeable state. <P>SOLUTION: The display device of the working machine is composed as follows. A displaying means FH for displaying the state of speed change of the speed changer 42 freely changeable into the plurality of states of speed change is equipped with a plurality of speed change display parts 16-18 arranged side by side correspondingly to the plurality of states of speed change and a display controlling means for controlling the display operation of the plurality of speed change display parts 16-18 so that the speed change display part corresponding to the present state of speed change in the plurality of speed change display parts 16-18 is the display state corresponding to the speed change and other speed change display parts are non-corresponding states of speed change. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a display device for a work machine including display means for displaying a shift state of a transmission that can be switched to a plurality of shift states.

As a conventional example of a display device for a work machine having the above-described configuration, there is a display device configured as follows as applied to a combine which is an example of a work machine.
That is, a liquid crystal display device is provided in the driving unit of the fuselage, and the liquid crystal display device is provided with a shift display unit that displays a shift state of the transmission that can be switched to a plurality of shift states. Only the current shift state among a plurality of shift states in the transmission is displayed (for example, see Patent Document 1). In addition to the shifting state of the transmission, the liquid crystal display device displays various types of notification information such as the working speed and engine load that are the traveling speed of the vehicle body when performing work such as during cutting operations. It has become.

  In other words, the transmission is a sub-transmission that transmits the transmission power obtained by shifting the output of the engine by the main transmission to the travel device, and the output of the engine is shifted by the main transmission. The shift transmission device is configured by a cutting transmission device that transmits the transmission power to the cutting unit after shifting, and the shift state display unit displays a shift display unit for the auxiliary transmission unit that displays the shift state of the auxiliary transmission unit, and the cutting unit. A shift display unit for a cutting transmission that displays a shift state of the transmission includes a shift display unit for the sub-transmission device and a shift display unit for the cutting transmission. Only the current shift state among the plurality of shift states in the cutting transmission is displayed.

  For example, in the case of the sub-transmission device, a plurality of shift states can be switched between a high speed state for traveling on the road, a standard state for mowing work, a low speed state for low speed work, and a neutral state, and the actual speed change state “H” character is displayed in the high speed state, “M” character is displayed in the standard state, “L” character is displayed in the low speed state, and “N” character is displayed in the neutral state. It is. On the other hand, in the case of the cutting transmission, a plurality of shift states, for example, a high speed state corresponding to a working condition in which the planting stem is lying down and a standard working condition in which the planting stem is upright are used. There is a corresponding low speed state, and a character “H” is displayed in the high speed state, and a character “L” is displayed in the low speed state.

JP 2005-80549 A

  In the above-described conventional configuration, only the current shift state is displayed on the shift display unit by text information. Therefore, when the operator visually confirms the display content, the operator can At present, it has become difficult to understand which of the shift states is sensuously.

  In other words, in the combine as an example of the work machine as described in the conventional configuration, the sub-transmission device includes a plurality of shift states, the road shift state such as the high speed state, and the standard. There is a shifting state for cutting work such as the state and the low-speed state, but when performing the cutting operation for cutting the planted stems in the field, set the shifting state for the cutting work, When traveling on a headland, a saddle or the like, the vehicle is used by switching the shift state in accordance with the work situation at that time, for example, traveling on a road with a shift state set for traveling on the road.

  For example, the shift state may be frequently switched, such as switching to a shift state for traveling on a road when traveling on a headland, and switching to a shift state for a mowing operation when performing a cutting operation. As in the conventional configuration, if only the current shift state among a plurality of shift states is displayed with characters, the current shift state is a shift state for road driving or a shift state for a cutting operation It is difficult to understand whether or not it is, and the operator misunderstands that, when traveling on the headland, switch to the shifting state for cutting work, and switch to the shifting state for traveling on the road when cutting operation is performed. For example, there is a risk of erroneously switching to a speed change state that is not suitable for the work situation at that time. In particular, an unskilled person who is unfamiliar with the work may have erroneously operated the shift state due to the above-described misunderstanding.

  In addition, the cutting gear shifter switches to a high speed state or changes to a low speed state when performing a cutting work for cutting the planted stalks in the field, depending on the difference in the lying state of the planted stalks at that time. In this cutting transmission, as with the auxiliary transmission, only the current transmission state among a plurality of transmission states is displayed in characters as in the conventional configuration as described above. If it is a form, it will be difficult to understand whether the current gear shift state is a high speed state or a low speed state, and when the operator is misunderstood and the working condition is that the planting stem is lying down There was a risk of switching to a low-speed state, or switching to a high-speed state under standard work conditions where the planting stems are upright, and so on, to a gear-shift state that is not adapted to the work situation at that time.

  An object of the present invention is to provide a display device for a work machine that can reduce the risk of erroneously switching to a shift state that is not suitable for the work situation by displaying the shift state of the transmission in an easily understandable state. There is in point to do.

  A display device for a work machine according to the present invention includes display means for displaying a shift state of a transmission that can be switched to a plurality of shift states, and the first feature is that the display means includes A plurality of shift display units arranged in parallel corresponding to a plurality of shift states, and among the plurality of shift display units, the shift display unit corresponding to the current shift state is set to a shift-corresponding display state, and the other shift display units are The display control means is configured to include display control means for controlling display operations of the plurality of shift display units so as to be in a non-shift compatible state.

  According to the first characteristic configuration, a plurality of shift display units corresponding to a plurality of shift states are provided, and among the plurality of shift display units, the shift display unit corresponding to the current shift state is set to a shift-corresponding display state, and Display operations of the plurality of shift display units are controlled by the display control means so that the other shift display units are in a non-shift compatible state.

  That is, when the transmission is switched to any one of a plurality of shift states, the shift display corresponding to the current shift state is changed to the shift corresponding display state, and the other shift display units are not shifted. Since the corresponding state is established, the operator knows not only the shift display unit corresponding to the current shift state but also the other shift display units. It is easy to determine which of the plurality of shift states is present from the difference in display form between the shift display portion corresponding to the current shift state and the other shift display portions. can do. As a result, since it is possible to easily determine which of the plurality of shift states is the current shift state, the operator erroneously switches to an inappropriate shift state that is not suitable for the current work situation. This can be easily avoided.

  Accordingly, it is possible to provide a display device for a work machine that can reduce the risk of erroneously switching to a shift state that is not suitable for the work situation by displaying the shift state of the transmission in an easily understandable state. .

  In the second feature configuration of the present invention, in addition to the first feature configuration, each of the plurality of shift display units displays the corresponding shift state as character information and switches between a bright display state and a dark display state. The display control means is configured so that the shift display unit corresponding to the current shift state among the plurality of shift display units is set to the bright display state as the shift-compatible display state, and the other shift display units The non-transmission compatible state is configured to be in a dark display state.

  According to the second characteristic configuration, the shift display unit corresponding to the current shift state among the plurality of shift display units represents the shift state as character information and displays it in a bright display state. Then, other shift display units other than the shift display unit corresponding to the current shift state display the shift state as character information and display it in a dark display state.

  As a result, the operator knows not only the shift display section corresponding to the current shift state but also the other shift display sections, so it is easy to determine how many all the shift states exist. can do. In addition, since the shift display state is set to the bright display state and the other shift display units are set to the non-shift support state and the dark display state, The difference between the shift display portion corresponding to the shift state and the other shift display portions is easily understood, and it is possible to easily determine which shift state is the current shift state.

  According to a third feature configuration of the present invention, in addition to the first feature configuration or the second feature configuration, the work machine is configured by a combine that includes a traveling device driven by engine power and a mowing unit, and the transmission device. However, the sub-transmission device that transmits the transmission power obtained by shifting the output of the engine with the main transmission device to the travel device after the transmission is changed, and the transmission power obtained by changing the output of the engine with the main transmission device. It is constituted by a cutting transmission device that is transmitted to the cutting unit later, and the display means displays a display means for the auxiliary transmission device that displays a shifting state of the auxiliary transmission device, and a shifting state of the cutting transmission device. It is in the point comprised by the display means for the cutting transmission which performs.

  According to the third characteristic configuration, the combine as the work machine is configured to transmit the shift power obtained by shifting the output of the engine with the main transmission to the traveling device after further shifting with the auxiliary transmission. The shift power obtained by shifting the engine output by the main transmission is further shifted by the cutting transmission and then transmitted to the cutting unit. As the plurality of shift states of the auxiliary transmission, for example, there are a shift state for traveling on the road, a shift state for cutting work, and the like. On the other hand, as a plurality of shift states of the cutting gearbox, for example, it corresponds to a high speed state corresponding to a working condition in which the planting stem is in an upright state and a working condition in which the planting stem is in a lying state There is a low speed state.

  Since the display means for displaying the shift state of the sub-transmission device and the display means for the mowing transmission device for displaying the shift state of the mowing transmission device are provided, the operator can change the shift state of the sub-transmission device. For each of the shift states of the mowing transmission, it is possible to know how many shift states are operated for shifting, and to easily determine which of the plurality of shift states is currently present. Can do.

  Accordingly, by displaying the shift state in an easily understandable state for each of the auxiliary transmission and the cutting transmission, it is possible to reduce the possibility of erroneous switching to a shift state that is not suitable for the work situation.

  In addition to the third feature configuration, the fourth feature configuration of the present invention is a fuel display that displays a working speed display unit, an engine rotation speed display unit, and a fuel remaining amount on a display panel provided in the front part of the driver's seat. Are provided in a side-by-side state in which the operation speed display unit is positioned between the engine rotation speed display unit and the fuel display unit, and the shift state display unit in the sub-transmission display means and the cutting transmission device In the display means, the shift state display section is provided with one of them positioned below the engine speed display section and the other positioned below the fuel display section.

  According to the fourth characteristic configuration, on the display panel provided in the front part of the driver's seat, the work speed display unit, the engine rotation speed display unit, and the fuel display unit that displays the remaining fuel amount are the engine rotation speed display unit. The working speed display unit is located between the fuel display unit and the fuel display unit in a side-by-side state, so that the working speed, which is the traveling speed of the vehicle body when performing work such as during cutting work, the power source of the working machine By displaying the rotational speed of the engine and the remaining amount of fuel that is the remaining amount of fuel to be supplied to the engine in a state of being arranged side by side in the horizontal direction, the operator can appropriately perform such work. It is possible to easily check notification information that an operator needs to check frequently in order to perform it continuously.

  And the shift display part in the display means for the auxiliary shift and the shift display part in the display means for the harvesting transmission device, one of them is below the engine rotation speed display part and the other is the fuel display part Since the engine speed display unit and the fuel display unit are positioned below the left and right sides of the work speed display unit, the sub-port The speed change display part in the display means for speed change and the speed change display part in the display means for the cutting transmission are arranged in a state of being separated in the left-right direction.

  Therefore, it is less likely to be confused by the operator who is viewing, compared to the display device in which the shift display portion in the sub-shift display means and the shift display portion in the display means for the chopped transmission are arranged side by side in close proximity. In this state, the shift state of the sub-transmission device and the shift state of the cutting transmission device can be confirmed.

  According to a fifth feature configuration of the present invention, in addition to the third feature configuration or the fourth feature configuration, an image display type information display unit is provided below the work speed display unit, and the display control unit includes a work machine. In this driving, the display operation of the information display unit is controlled so as to switch and display a plurality of types of notification information to be notified to the operator.

  According to the fifth feature configuration, a plurality of types of notification information to be notified to the operator during the operation of the work machine is switched and displayed on the auxiliary display unit arranged in parallel with the lower side of the work speed display unit and configured as an image display type. Thus, a plurality of notification information that should be notified to the operator can be appropriately displayed without increasing the display space.

  According to a sixth feature configuration of the present invention, in addition to the fourth feature configuration or the fifth feature configuration, the work speed display unit has an arcuate work speed that protrudes upward from the minimum speed display position and the maximum speed display position. The work speed display instruction unit is moved according to the work speed along the display setting path, and the engine load display unit extends between the minimum load display position and the maximum load display position, and the work speed is displayed. A load display instruction section is provided to move in accordance with the engine load along an upwardly projecting arc-shaped load display setting path arranged on the outer side of the display setting path.

  According to the sixth feature configuration, the work speed display section includes a work speed display instruction section along the arc-shaped work speed display setting path that protrudes upward and extends between the minimum speed display position and the maximum speed display position. Since the work speed is displayed in a form of being moved according to the work speed, the work speed can be easily determined sensuously by visually observing the movement state of the work speed display instruction unit.

  In other words, the position where the work speed display instruction part is located between the minimum speed display position and the maximum speed display position, in other words, the current work speed can be adjusted between the minimum speed and the maximum speed. It is easy to understand how much speed is in the range. In addition, since the appropriate work value for the work speed is determined in advance at a predetermined speed at the intermediate portion between the minimum speed and the maximum speed, how much the work speed differs from the proper value for work. Can be easily determined. In addition, since the operation speed is displayed by moving the operation speed instruction section along the operation speed display setting path formed in an arc shape, the display is limited as compared with, for example, those configured in a linear path. It is possible to make the work speed display setting route as long as possible by effectively using the space.

  Similarly, the engine load display unit moves the load display instruction unit in accordance with the engine load along the load display setting path extending from the minimum load display position to the maximum load display position. In other words, the engine load display instruction section is located between the minimum load display position and the maximum load display position, in other words, the current engine load is the minimum load and the maximum load. It is easy to understand sensuously how much of the engine load is within the load changeable range between the two. Also, the work appropriate value for the engine load is determined in advance as a predetermined engine load at the intermediate portion between the minimum load and the maximum load, similarly to the work speed. It is possible to easily determine whether there is a difference.

  Therefore, since it is possible to easily determine how much the work speed and the engine load are different from the appropriate values for work in this way, the engine speed and the work speed at that time, for example, increase the work speed or It is possible to display in an easily understandable manner how much the speed should be changed when decelerating, and it is easy to quickly obtain an appropriate working state.

  In addition, the engine load display section is provided in a state in which the load display setting path is formed in an upwardly projecting arc shape and is arranged on the outer side of the work speed display setting path in the work speed display section. The engine load display section can be rationally arranged by effectively using the space on the outer side of the speed display setting route.

Hereinafter, a case where an embodiment of a display device for a work machine according to the present invention is applied to a combine as a work machine will be described with reference to the drawings.
As shown in FIG. 1, the combine is provided with a cutting unit 1 at the front of a machine body V having a pair of left and right crawler travel devices 30 in a state in which it can be swung up and down around a horizontal axis X by a cutting lift cylinder 5. Provided in the machine body V, a threshing unit 2 that performs a handling process of the harvested cereal and a grain sorting process, a grain tank 3 as a storage unit that stores the grains supplied from the threshing part 2, and The unloader 32 and the like for discharging the grain from the Glen tank 3 are equipped. The glen tank 3 is provided with a fir sensor S6 for detecting the amount of grain (fir) stored therein.

  The cutting unit 1 includes a weeding tool 33 attached to the tip part, a culm raising device 34, a cutting blade 35 that cuts the stock of the culm that has been caused, and a chopping part that receives the cutting cereal meal on the tip side. A vertical conveying device 36 and the like that are transferred to the feed chain 52 are provided. In addition, an ultrasonic sensor S1 for detecting the height of the cutting unit 1 with respect to the ground, and a stock sensor S2 for detecting that the cutting operation is being performed when the cereal bud is touched are provided. Then, based on the information of the ultrasonic sensor S1, cutting height control is performed to control the operation of the cutting lift cylinder 5 so that the ground height of the cutting unit 1 is maintained at the target set height.

  The unloader 32 includes a discharge port 32a having a downward posture at the distal end portion, and is supported by a support portion 32b in a state where the base end side is swingable up and down around the horizontal axis Z. The support portion 32b is around the vertical axis Y. It is supported by the body V in a state where it can be swung freely. An unloader hydraulic cylinder 62 for vertically swinging the unloader 32, an unloader turning motor M3 for turning driving, and a potentiometer type unloader position sensor S3 for detecting the turning position of the support portion 32b are provided. It has been. In addition to the unloader position sensor S3, a limit switch (not shown) for detecting the limit position of the turning operation in the ascending direction and the left-right direction is also provided, and the unloader for controlling the operation of the unloader 32 based on the information. The control is configured to be executed.

  As shown in FIG. 2, the threshing unit 2 is a sorting unit including a handling chamber A that houses the handling cylinder 51, a feed chain 52 that conveys the cereals supplied from the cutting unit 1, a thimble 53, and a swing sorting plate 54. Device B, first mouth 55 for grain recovery, second mouth 56 for collecting a mixture of grain and sawdust (second thing), and the like are provided. And the processed material processed in the processing chamber A leaks to the sorting device B from the receiving net 57 provided in the lower part of the operating chamber A, and other processed materials are selected from the rear end of the receiving net 57. Drop into device B. The grain recovered at the first port 55 is transferred to the Glen tank 3 by a screw-type transfer device (not shown), and the second item recovered at the second port 56 is the screw-type second number. The conveyor device 63 is configured to return to the start end side of the swing sorting plate 54. Further, as shown in FIG. 1, a waste straw cutter part 64 for cutting the waste discharged from the threshing part 2 is provided on the rear side of the threshing part 2, and the clogging of the waste straw cutter part 64 is detected. An exhaust wall clogging detection switch S15 is provided.

  The swing sorting plate 54 of the sorting apparatus B includes a grain pan 58 positioned above the tow 53, a chaff sheave 59 positioned behind the grain pan 58, and a grain sheave 61 positioned below the chaff sheave 59. The chaff sheave 59 is composed of a plurality of band plate-like members juxtaposed in the workpiece transfer direction, and the interval (chaff opening) between the adjacent band plate-like members is changed by the chaff opening adjustment motor M4. Has been. Note that S8 is a sheave sensor that detects the amount of the sorting processed product on the swing sorting plate 54. The tomi 53 is for blowing the sorting wind, and the wind force (toumi) exerted on the processed material on the swing sorting plate 54 by opening and closing the rear fan case cover 53a with the tomi wind power adjusting motor M5. Wind power) is configured to be changed.

  Then, threshing control for controlling the operation of the chaff opening adjusting motor M4 and the tomi wind power adjusting motor M5 according to the amount of the leaked processed material from the handling chamber A is performed so that the sorting process in the sorting apparatus B is properly performed. Executed.

  Next, the power transmission system is shown in FIG. The output of the engine E mounted on the machine body V is transmitted to the threshing unit 2 via the threshing clutch 37 and the mission of the crawler traveling device 30 via the traveling clutch 38 and the continuously variable transmission 39 as the main transmission. Is transmitted to the unit 40. The output transmitted to the mission unit 40 is transmitted to the crawler traveling device 30 via the auxiliary transmission 42 provided in the mission unit 40, while being transmitted to the cutting unit 1 via the cutting transmission 43 and the cutting clutch 41. Communicated. And the vehicle speed sensor S4 which detects a working speed based on the rotational speed of the input shaft of the crawler traveling device 30 driven by the power after being shifted by the auxiliary transmission 42, and the engine which detects the rotational speed of the engine E A rotation speed sensor S5, a water temperature sensor S7 for detecting the coolant temperature of the engine E, and the like are provided.

  Although not described in detail, the vehicle speed sensor S4 generates a pulse signal corresponding to a change in the proximity distance between the gear tooth portion and the groove portion of the gear provided on the input shaft of the crawler traveling device 30 by the action of the electromagnetic pickup coil. It is configured to output as a signal corresponding to the rotation speed of the gear, and the work speed is detected based on the length of the pulse period of the pulse signal.

  Similarly to the vehicle speed sensor S4, the engine rotation speed sensor S5 is close to the gear teeth and the groove provided to rotate integrally with the output shaft of the engine E by the action of the electromagnetic pickup coil. A pulse signal corresponding to a change in the distance is output, and the work speed is detected based on the length of the pulse period of the pulse signal.

  The continuously variable transmission 39 is configured to be manually shiftable by a manually operated main transmission lever 7 provided in the driving section 31. The speed can also be controlled by the speed change motor M6. The sub-transmission device 42 shifts a shift gear (not shown) by extending / contracting the sub-transmission hydraulic cylinder 65 as an actuator so that the high-speed state for road traveling, the low-speed state for cutting work, and the crawler traveling device 30 are moved. It is configured to be switchable to three shift states in a neutral state that interrupts the power transmission. A sub-transmission sensor S10 is provided for detecting at which shift position the sub-transmission device 42 is located.

  The cutting transmission 43 is configured to shift between a high speed state and a low speed state by shifting a shift gear (not shown) by an expansion / contraction operation of a cutting hydraulic cylinder 66 as an actuator, and cutting with respect to the working speed of the combine. The relative speed of the cutting work speed of the section 1 can be switched between two levels of high and low according to the difference in the type of crop, the difference in the lodging state of the planted cereals, and the like. A cutting shift sensor S11 that detects which shift state the cutting transmission 43 is in is provided.

  As shown in FIGS. 14 and 15, the sub-transmission device 42 includes a toggle-operating sub-transmission change-over switch 9 provided on the grip portion of the main transmission lever 7 so that a finger can be operated, and the main transmission lever 7 in the operation unit 31. The shift state is switched on the basis of a command from the sub-shift neutral switch 10 provided at a different location, and the sub-shift selector switch 9 is switched while the sub-shift neutral switch 10 is turned off. Thus, it is possible to switch between the high speed state and the low speed state, and the sub shift neutral switch 10 is turned on to switch to the neutral state. The sub-shift neutral switch 10 is composed of a push-operated switch that switches alternately between an on state and a off state each time it is pushed, and whether the on state or the off state is indicated by a lamp (not shown). It is supposed to be.

  Similarly to the auxiliary transmission change-over switch 9, the cutting transmission 43 is a toggle-operated cutting transmission changeover switch provided on the grip portion 7a of the main transmission lever 7 so that a finger can be operated, as shown in FIGS. By switching the switch 11, it can be switched between a high speed state and a low speed state.

  The operation unit 31 is provided with a cross operation type cutting height steering lever 8 configured to be used both as a cutting up / down commanding tool for moving up and down the cutting unit 1 and a turning operation commanding tool for turning the machine body V left and right. Yes. That is, when the cutting height steering lever 8 is operated to swing backward, the cutting unit 1 is raised, and when it is operated swinging forward, the cutting unit 1 is lowered. The machine body is configured to turn left when the cutting height steering lever 8 is swung to the left, and to turn right when the cutting height steering lever 8 is swung to the right.

In this combine, a display unit as a notification information display means for displaying a plurality of types of notification information to be notified to the operator in the operation of the combiner on a display panel provided in front of the driver seat 29 in the driving unit 31. C is provided.
The display unit C includes a main display unit C1 and an auxiliary display unit C3 arranged in parallel to the main display unit C1, and the main display unit C1 displays a work speed as the notification information. The auxiliary display unit C3 is configured as an image display type, and a plurality of types of notification information other than the notification information displayed on the main display unit C1 are displayed side by side as the notification information. It is configured.

  In addition, the auxiliary display unit C3 is provided in a state where it is juxtaposed on the lower side of the main display unit C1, and a pair of sub display units C2, C2 is provided in a state where it is juxtaposed on the left and right sides of the main display unit C1. The pair of sub display units C2 and C2 display the notification information other than the notification information displayed on the main display unit C1 and the plurality of types of notification information displayed on the auxiliary display unit C3 as the notification information. It is configured as follows.

  And the said main display part C1 is comprised so that engine load may be displayed as alerting | reporting information in addition to work speed. That is, the main display section C1 is a work speed display section that moves the work speed display instruction section according to the work speed along the work speed display setting path Q1 extending from the minimum speed display position to the maximum speed display position. The engine load display as an engine load display unit that moves the load display instruction unit according to the engine load along the load display setting route Q2 extending between the minimum load display position and the maximum load display position. And a total of 13 units.

  In other words, as shown in FIG. 4, the main display unit C1 located at the center in the left-right direction of the display unit C displays a work speed display unit that displays the work speed detected by the vehicle speed sensor S4. A working speed meter 12 is provided. The work speed meter 12 is configured so that the work speed display setting path Q1 has an arc shape protruding upward, and the indicator needle 12a as the work speed display instruction section is moved along the speed display setting path Q1. Yes.

  In other words, the indicator needle 12a is configured to rotate so as to draw an arcuate locus whose one end in the longitudinal direction is a pivot point and the other end in the longitudinal direction protrudes upward. On the inner back side of the face plate, although not shown, there is provided a rotation drive unit that rotates the indicator needle 12a so that the rotation angle increases as the work speed detected by the vehicle speed sensor S4 increases. Yes. The current working speed can be read by determining the position of the other end in the longitudinal direction of the indicator needle 12a in correspondence with the scale 12b displayed on the back plate.

  When the work speed is zero speed, the indicator needle 12a is at the zero speed position rotated most counterclockwise, and the indicator needle 12a rotates clockwise with the rotation angle increasing as the work speed increases. The indicator needle 12a has a posture inclined slightly to the lower left side than the horizontal direction at the zero speed position, and a posture inclined slightly to the lower right side than the horizontal direction at the maximum speed position. The rotation position is set so that it can be rotated over a wide range exceeding 180 degrees, and the resolution can be improved and the display can be performed with high accuracy. In this embodiment, the working speed at the maximum speed position is set to 4 m / sec.

The main display portion C1 is provided with an engine load display meter 13 as an engine load display portion that displays the engine load along the arcuate outer peripheral portion of the work speed meter 12.
The engine load indicator 13 has a load display setting path Q2 having an upwardly projecting arc shape arranged on the outer side of the speed display setting path Q1, and a plurality of lighting sections that can be switched between a lighting state and a non-lighting state. Among the plurality of segment display units 13a arranged in parallel along the load display setting path Q2 as the load display instruction unit and arranged from the minimum load display position toward the maximum load display position As the load increases, the segment display portion 13a closer to the maximum load display position is switched from the unlit state to the lit state, and the position of the segment display portion 13a to be lit is set along the load display setting route Q2. Are configured to move.

  That is, the engine load indicator 13 includes a plurality of (specifically, 13) segment display units 13a arranged in a line, and each of the plurality of segment display units 13a has a light emitting diode (LED). Are individually installed, and can be switched between a lighting state and a light-off state individually.

  In addition, as shown in FIGS. 5 and 6, the engine load display meter 13 is a casing that is integrally formed so as to be bent in an arc shape along the arc-shaped outer peripheral portion of the work speed meter 12. 70 is provided, and in this casing 70, 13 light transmitting openings for forming 13 segment display portions 13a are partitioned and formed in a line in an arc shape. Each of the light transmitting openings defined by the casing 70 is provided with a light emitting diode 71 at a position on the inner side of the opening, and the light emitting diode 71 emits light at a position on the surface side. A diffusion plate 72 for diffusing light is provided. The engine load indicator 13 is configured to display the engine load in such a manner that the number of segment display portions 13a that are lit and displayed from the first one located at the end on the counterclockwise direction is sequentially increased as will be described later. It has become.

  The display color is green (G) from the first one located on the counterclockwise end of the thirteen segment display portions 13a to the eighth one in the clockwise direction. The light emitting diodes 71 having different colors are used so that the display color is yellow (Y) for the eleventh and the display color is red (R) for the twelfth and thirteenth.

Of the sub display portions C2 located on the left and right sides of the main display portion C1, the sub display portion C2 located on the left side of the main display portion C1 displays the engine speed detected by the engine speed sensor S5. An indicator needle type engine tachometer 14 is provided, and the sub display C2 located on the right side of the main display C1 displays the remaining amount of fuel in the fuel tank storing fuel to be supplied to the engine E. An indicating needle type fuel gauge 15 is provided. Accordingly, the pair of sub display units C2 are configured to display the engine speed and the remaining fuel amount as the notification information.
Although not shown, the fuel tank is provided with a fuel remaining amount sensor S9 for detecting the fuel remaining amount in the fuel tank (see FIG. 9).

  In the same manner as the work speedometer 12, the engine speedometer 14 is configured such that the indicator needle 14a rotates so that one end in the longitudinal direction has a rotation fulcrum and the other end in the longitudinal direction draws an arc-shaped locus. Although not shown, the indicator needle is arranged so that the larger the engine rotation speed detected by the engine rotation speed sensor S5, the larger the rotation angle. A rotation drive unit that rotates the 14a is provided. The current engine speed can be read by determining the position of the other end in the longitudinal direction of the indicator needle 14a in correspondence with the scale 14b displayed on the back plate.

  When the engine speed is zero, the indicator needle 14a is at the zero speed position rotated most counterclockwise, and the indicator needle 14a rotates clockwise with the rotation angle increasing as the engine speed increases. In this embodiment, the maximum rotation speed is set to 3000 rpm.

  As with the work speedometer 12, the fuel gauge 15 is configured such that the indicator needle 15a rotates so that one end in the longitudinal direction has a rotation fulcrum and the other end in the longitudinal direction draws an arc-shaped locus. Although not shown, the indicator needle 15a is arranged on the inner back side of the back plate at the pivot fulcrum so that the larger the remaining amount of fuel detected by the remaining fuel sensor S9 is, the larger the rotation angle is. A rotation drive unit that rotates is provided. The current fuel remaining amount can be read by determining the position of the other end in the longitudinal direction of the indicator needle 15a in correspondence with the scale 15b displayed on the back plate.

  When the remaining amount of fuel is full, the indicator needle 15a is in the position rotated most counterclockwise. When the remaining amount of fuel decreases, the indicator needle 15a rotates clockwise according to the amount of decrease. Thus, when the indicator needle 15a is in the most clockwise position, it indicates that the remaining amount of fuel is zero or substantially zero.

  Other notifications except for the remaining fuel information, engine rotation speed, engine load, and work speed information among a plurality of notification information to be notified to the worker in a state of being arranged below the work speed meter 12. An auxiliary display unit C3 is provided as an information display unit for displaying information. The auxiliary display unit C3 is configured by a dot matrix type liquid crystal display device capable of displaying image information, and is configured to display notification information by image display.

  The auxiliary display unit C3 includes a plurality of information display states in which a plurality of types of notification information are displayed side by side, and a number of pieces of notification information smaller than the number of notification information to be displayed in a plurality of types of notification information in a plurality of information display states. It is configured to be switchable to the display state of the minority information to be displayed, and is configured to be freely changeable from among a plurality of types of notification information for displaying the notification information to be displayed in the multiple information display state in the minority information display state. . The display state of the auxiliary display unit C3 is switched by operating a mode switch 80 as described later.

  A specific display form will be described. In the multiple information display state, as shown in FIG. 10 (a), the grains stored in the Glen tank 3 (in the figure, indicated as “fir”). , The amount of sorting processed product on the swing sorting plate 54 detected by the sheave sensor S8 (indicated as “sheave” in the figure), and the cooling water in the engine E detected by the water temperature sensor S7. Each information of temperature (denoted as “water temperature” in the figure) is displayed. In addition to the information, the auxiliary display section C3 includes left and right turn signal displays 74, an hour meter 75 indicating the combined operation time of the combine, a charge alarm display 76 indicating that the remaining battery charge is low, and an oil abnormality The oil warning display 77 for displaying is also displayed side by side.

  In the minority information display state, as shown in FIG. 12, one information among the grain storage amount, the amount of selected processed products, and the water temperature of the engine cooling water is displayed in an enlarged state than in the multiple information display state. To do. Switching of information to be displayed is performed by operating a display changeover switch 81 described later. In addition, the auxiliary display unit C3 is configured to display message information for responding to the abnormality in place of the various types of notification information as described above in an abnormal state where the combine is abnormal. ing.

  The combine is provided with a shift display means for displaying the shift state of the transmission that can be switched to a plurality of shift states. The shift display means includes a plurality of shift display units arranged in parallel corresponding to a plurality of shift states, and a shift display unit corresponding to the current shift state among the plurality of shift display units is displayed as a shift-compatible display state. And display control means for controlling the display operation of the plurality of shift display sections so that the other shift display sections are in a non-shift compatible state. That is, each of the plurality of shift display units is configured to represent the corresponding shift state as character information and to be switchable between a bright display state and a dark display state, and the display control means includes the plurality of shift display units. Among the display units, the shift display unit corresponding to the current shift state is configured to be the bright display state as the shift-compatible display state, and the other shift display units are set to the dark display state as the non-shift corresponding state. Yes.

  The transmission is composed of the auxiliary transmission 42 and the cutting transmission 43, and the transmission display means is a transmission display FH for the auxiliary transmission and a transmission display for the cutting transmission. It is constituted by means KH.

Next, a configuration for displaying the shift state of the auxiliary transmission 42 in the display unit C will be described.
As shown in FIG. 4, a sub-transmission display portion C4 that displays a shift state of the sub-transmission device 42 by using a part of the display unit C, and a cutting shift display portion C5 that displays a shift state of the cutting transmission device 42. Is configured. The auxiliary transmission display portion C4 is provided in a state of being positioned below the engine tachometer 14, and as the plurality of transmission display portions, a high speed display portion 16 indicating a high speed state, a low speed display portion 17 indicating a low speed state, and a neutral state The neutral display portions 18 are arranged in a horizontal direction, and each of the three display portions 16, 17 and 18 is provided with an illumination lamp 73 made up of an LED lamp or the like. Of the display portion, the illumination lamp 73 of the display portion corresponding to the current shift state is turned on to display brightly, and the illumination lamp 73 of the other display portion is turned off to display darkly. The current shift state is displayed.

  Specifically, as shown in FIG. 7, the display surface of the auxiliary transmission display unit C4 is covered with a light-shielding plate 19 that does not transmit light, and the high-speed display portion 16 has its display. A part of the plate 19 of the surface portion is composed of the H-shaped translucent member 20 such that the letter “H” is displayed brightly when the illumination lamp 73 is turned on. The character “H” is configured to be shaded.

  Similarly, a part of the plate 19 of the display surface portion of the low-speed display portion 17 is formed by an L-shaped translucent member 21 such that the letter “L” is displayed brightly when the illumination lamp 73 is lit. Thus, when the illumination lamp 73 is turned off, the letter “L” is displayed in a shaded manner. Further, the neutral display portion 18 is configured by an N-shaped translucent member 22 that displays a letter “N” brightly when a part of the plate 19 of the display surface portion is turned on. When the illumination lamp 73 is turned off, the character “N” is displayed in a shaded manner.

  The high-speed display portion 16, the low-speed display portion 17, and the neutral display portion 18 that are arranged side by side in this way are in a display state in which character information is brightly displayed when the illumination lamp 73 is turned on, and the illumination lamp 73 is turned off. Then, it is configured to switch to a shaded display, and the operator knows the existence of the shaded display part as well as the brightly displayed part. However, it is possible to display in a state where it is easy to understand which of the shift states is presently present.

  Each illumination lamp 73 of the auxiliary transmission display unit C4 as described above is configured to be switched on and off by the control unit 28, as will be described later. Accordingly, the control unit 28 constitutes a display control means, and the high-speed display portion 16, the low-speed display portion 17 and the neutral display portion 18 of the sub-transmission display portion C4 and the control portion 28 are used for the sub-transmission device. The shift display means FH is configured.

Next, a configuration for displaying the shift state of the cutting transmission in the display unit will be described.
The cut gear shift display portion C5 is provided in a state of being arranged below the fuel gauge 15, and the cut gear shift display portion C5 is similar to the sub gear shift display portion C4 as a plurality of unit display portions. Each of the high-speed display portion 23 indicating the high-speed state and the low-speed display portion 24 indicating the low-speed state is provided in a state in which the illumination lamp 73 is provided, and the illumination lamp 73 of the display portion corresponding to the current shift state is turned on. The current shift state of the cutting transmission device 43 is displayed by turning off the illumination lamps 73 in the other display portions.

  Specifically, as shown in FIG. 8, the cutting shift display portion C <b> 5 is configured such that the display surface is covered with a light-shielding plate body 25, and the high-speed display portion 23 is a part of the plate body 25. When the illumination lamp 73 is turned on, the H-shaped translucent member 26 displays the letter “H” brightly. When the illumination lamp 73 is turned off, the letter “H” is shaded. It is configured as follows. Similarly, the low-speed display portion 24 is configured by an L-shaped translucent member 27 that displays a letter “L” brightly when the illumination lamp 73 is turned on. When the is turned off, the character “L” is displayed in a shaded manner.

  Each illumination lamp 73 of the cutting shift display C5 as described above is configured to be switched on and off by the control unit 28, as will be described later. Therefore, the control unit 28 constitutes a display control means, and the high speed display portion 23 and the low speed display portion 24 of the cutting shift display unit C5 and the control unit 28 respectively display a shift display for the cutting transmission device. Means KH is configured.

  Further, on the lateral side of the display unit C, there are provided a mode selector switch 80 for instructing switching of the display state in the auxiliary display section C3 and a display selector switch 81 for instructing switching of display contents. , 81 are configured as push-button switches that are turned on only when a push operation is performed and are turned off when the push operation is not performed.

  As shown in FIG. 9, a control unit 28 configured by using a microcomputer is provided. The control unit 28 includes an ultrasonic sensor S1, a stock sensor S2, an unloader position sensor S3, a vehicle speed sensor S4, and an engine rotation. The detection information of the speed sensor S5 and the sheave sensor S8 is input, and the detection information of the fir sensor S6, the water temperature sensor S7, the remaining fuel sensor S9, the auxiliary shift sensor S10, and the cutting shift sensor S11 is also input to the control unit 28. In addition, information on the sub-shift switch 9, the sub-shift neutral switch 10, the mowing shift switch 11, the mode switch 80, and the display switch 81 is also input to the control unit 28.

  On the other hand, the control unit 28 includes a cutting lift cylinder 5, an unloader hydraulic cylinder 62, an unloader turning motor M3, a chaff opening adjusting motor M4, a tomi wind power adjusting motor M5, a speed changing motor M6 for shifting the vehicle speed, and a sub shifting gear. The drive signals for the hydraulic cylinder 65, the cutting shift hydraulic cylinder 66, and the display unit C are output. And the control part 28 is comprised so that the said each cylinder and each motor may be driven based on the information of each said sensor, and various controls, such as cutting height control, unloader control, and threshing control, may be performed.

  And the said control part 28 becomes a structure which implements the display control which controls the display state in the display unit C. FIG. Hereinafter, the specific content of the display control by the control unit 28 will be described with reference to the flowchart of FIG.

  The control unit 28 operates the work speed meter 12 so as to correspond to the current work speed based on the detection information of the vehicle speed sensor S4, and corresponds to the rotation speed of the engine E based on the detection information of the engine rotation speed sensor S5. Then, the engine speedometer 14 is operated, and the fuel meter 15 is operated so as to correspond to the fuel remaining amount in the fuel tank based on the detection information of the fuel remaining amount sensor S9 (step 1).

  When the description of the display of the work speed is added, the control unit 28 causes the turning angle of the indicator needle 12a of the work speed meter 12 to be a turning angle corresponding to the current working speed detected by the vehicle speed sensor S4. The operation of the rotation drive unit of the work speed meter 12 is controlled.

  Similarly, for the engine speed meter 14, the rotation angle of the indicator needle 14a of the engine speed meter 14 becomes a rotation angle corresponding to the current engine speed detected by the engine speed sensor S5. The operation of the rotation drive unit of the engine rotation speed meter 14 is controlled. Similarly, with respect to the fuel gauge, the fuel gauge 15 so that the turning angle of the indicator needle 15a of the fuel gauge 15 becomes a turning angle corresponding to the current remaining fuel amount detected by the remaining fuel amount sensor S9. The operation of the rotation drive unit is controlled.

  Next, based on the command information of the sub-shift switch 9 and the sub-shift neutral switch 10, the operation of the sub-shift hydraulic cylinder 65 is controlled so that the corresponding shift state is established, and the sub-transmission device 42 is shifted. However, since it is possible to determine the current shift state of the current sub-transmission device 42 based on the detection information of the sub-transmission sensor S10 at that time, the sub-transmission display unit C4 presents the current shift state based on the determination result. Which shift state the sub-transmission device 42 is in is displayed (step 2). That is, the illumination lamp 73 is turned on and brightly displayed for any of the high-speed display portion 16, the low-speed display portion 17, and the neutral display portion 18 of the auxiliary transmission display portion C 4, and the illumination lamp 73 is turned off for the others. And darken it.

  Further, the control unit 28 controls the operation of the cutting shift hydraulic cylinder 66 so as to be in a corresponding shift state based on the command information of the cutting shift changeover switch 11 and shifts the cutting transmission 43. Based on the detection information of the cutting shift sensor S11, it is possible to determine which shift state the current cutting transmission 43 is in. Therefore, on the cutting shift display C5, the current cutting transmission is displayed based on the determination result. Which shift state 43 is displayed is displayed (step 2). Specifically, the illumination lamp 73 corresponding to one of the high-speed display portion 19 and the low-speed display portion 20 of the cutting shift display portion C5 is turned on, and the other illumination lamps 73 are turned off.

  Then, in a normal state where the combine is operating normally, the control unit 28 displays the plurality of segment display units 13a in the engine load indicator 13 from one end side in the arrangement direction, for example, as shown in FIG. The engine load is displayed by sequentially increasing the number of segment display units 13a to be displayed, and in an abnormal state where an abnormality has occurred in the combine, all of the plurality of segment display units 13a are flashed and displayed (step 3, 4).

  The structure for detecting the engine load will be described. In this combine, when the engine E is in a no-load state where no load is applied, the operator performs an accelerator operation so that the engine speed is set in advance. The accelerator operation position of the engine E is adjusted so as to become the set reference rotation speed. When the engine rotation speed becomes the reference rotation speed, the position is fixed at the accelerator operation position and the subsequent work is performed. ing.

  When a load is applied to the engine E, the engine rotation speed decreases from the reference rotation speed in accordance with the magnitude of the engine load. It is set as map data in a state in which the magnitude of the engine load is associated. Therefore, the control unit 28 calculates the difference between the engine rotation speed detected by the engine rotation speed sensor S5 and the reference rotation speed, that is, the engine rotation speed decrease amount, and calculates the engine rotation speed decrease amount and the The engine load is determined based on the map data.

  When displaying the engine load thus obtained, the control unit 28 displays the 13 segment display units 13a from the first one located at one end in the arrangement direction, that is, the counterclockwise end. The engine load is displayed in such a manner that the number of segment display portions 13a to be lit up is sequentially increased. When the engine load is an appropriate load, the green segment display portion 13a is lit, and when the engine load increases and exceeds the set value and becomes a caution load state, in addition to the eight green segment display portions 13a, yellow is displayed. The segment display portion 13a lights up. Furthermore, when the engine load increases and exceeds the upper limit value, the red segment display unit 13a is turned on in addition to the eight green segment display units 13a and the three yellow segment display units 13a. Become.

  Further, in a normal state where the combine is operating normally, the control unit 28 performs display processing for displaying various types of notification information as described above on the auxiliary display unit C3 (step 5).

In this display process, every time the mode changeover switch 80 is pressed, the plural information display state and the minority information display state are alternately switched.
Specifically, in the multiple information display state, as shown in FIG. 10 (a), as the multiple types of notification information, the grain stored in the Glen tank 3 (in the figure, expressed as “fir”). ), The amount of the sorting processed product on the swing sorting plate 54 detected by the sheave sensor S8 (denoted as “sheave” in the figure), and the cooling water in the engine E detected by the water temperature sensor S7. Each water temperature information is displayed. In addition to the information, the left and right turn signal displays 74, the hour meter 75 indicating the combined operation time of the combine, the charge alarm display 76 indicating that the battery charge is low, and the oil alarm display 77 indicating the oil abnormality Are also displayed side by side. Further, in the state of switching to the minority information display state, every time the display changeover switch 81 is pushed, the selected processed product amount, the grain storage amount, and the temperature of the cooling water, as shown in FIG. In a state where any of the information is enlarged and displayed, the display contents are sequentially switched in a preset order.

  The minority information display state is not limited to a configuration in which any one of the plurality of pieces of notification information is displayed in an enlarged state, but as shown in FIG. The plurality of notifications, such as a state in which the water temperature) and the amount of grain storage (fir) are displayed side by side, a state in which the amount of processed material (sieve) on the swing sorting plate 54 and the amount of grain storage (fir) are displayed side by side, etc. It is good also as a structure which switches in the order set beforehand, every time the display switch 81 is operated in the state which displays two alerting | reporting information of information.

  Then, in an abnormal state where the combine is abnormal, the control unit 28 blinks and displays all the thirteen segment display units 13a in the engine load display meter 13 (step 6). The abnormal state here is a case where an abnormality that makes it difficult to continue the cutting operation has occurred in any part of the combine. For example, an exhaust wall clogging detection switch There is an abnormal discharge clogging or the like in which the exhaust straw is clogged in the exhaust straw cutter unit 64 when S15 is turned on. In addition to this waste straw clogging, there are abnormalities such as clogging of harvested cereal grains in the cutting unit 1 and abnormal overheating of the engine.

  Moreover, the control part 28 respond | corresponds to the said abnormality instead of several types of alerting | reporting information, such as above-mentioned stored grain amount, the amount of sorting processed materials, and water temperature, in the abnormal state where the abnormality has generate | occur | produced in the combine. Message information is displayed on the auxiliary display C3 (step 7). When an abnormality such as the one described above is clogged, as shown in FIG. 10 (b), message information for dealing with the abnormality that occurred at that time, for example, “the waste cutter is clogged with straw. Message information like "Please remove the wall" is displayed.

[Another embodiment]
Next, another embodiment will be described.

(1) In the above-described embodiment, the plurality of shift display units include a translucent member that displays the shift state that it is in charge of using character information, and an illumination lamp that illuminates the translucent member from the back. However, instead of such a configuration, the following configuration may be used.
For example, the entirety of the plurality of shift display units is configured by an image display device such as a liquid crystal display device or a CRT display device, and each of the plurality of shift display units is configured by image information, so The corresponding state may be displayed in various forms such as displaying in different colors or blinking at different periods.

(2) In the above embodiment, the sub-transmission device is illustrated as being configured to be switchable between three shift states: a high-speed state for traveling on the road, a low-speed state for cutting work, and a neutral state. Instead of this configuration, it is possible to switch to four shift states, namely, a high speed state for road driving, a standard state for cutting work, a low speed state for cutting work, and a neutral state, or increase the number of steps in the shifting state for cutting work. It may be configured to switch to five or more shift states.

(3) In the said embodiment, although the said cutting transmission was set as the structure switched to a high speed state and a low speed state, it may replace with such a structure and it may be set as the structure which can be switched to the speed change state of 3 steps | paragraphs or more.

(4) In the embodiment described above, the auxiliary display unit displays message information for responding to the abnormality in place of the plurality of types of notification information in an abnormal state in which an abnormality has occurred in the work machine. Although configured, the message information may not be displayed.

(5) In the above-described embodiment, the operation speed display unit has a display configuration in which the indicator needle moves, and the engine load display unit is arranged with a plurality of segment display units as a lighting unit that switches between a lighting state and a non-lighting state. Although what is comprised was illustrated, it may replace with such a structure and it is good also as a display structure of the form to which an indicator needle moves, respectively, instead of the display part for work speeds, and the display part for engine loads. Alternatively, the work speed display unit and the engine load display unit may be configured by arranging a plurality of lighting units that switch between a lighting state and a lighting state. Further, the engine speed display unit may be configured to have a display configuration in which the indicator needle moves, with the work speed display unit configured by arranging a plurality of lighting units that switch between a lighting state and a light-off state.

  In addition, as a configuration in which a plurality of lighting sections that are switched between a lighting state and a light-off state are arranged, the segment display unit is not configured as in the above embodiment, and a plurality of, for example, round display lamps are provided at intervals on the display surface. As an arrangement, the display lamps may be implemented in various forms such as a form in which the display lamp is switched between a lighting state and a light-off state.

(6) In the above embodiment, the configuration for detecting the engine load based on the amount of decrease in the engine rotation speed from the engine rotation speed at the time of no load (reference rotation speed) is exemplified as the configuration for detecting the engine load. The configuration for detecting the engine load is not limited to such a configuration, and various configurations can be applied. For example, as a configuration for controlling the fuel supply amount to automatically adjust the engine rotation speed to a predetermined target value, the engine load is obtained from the fuel supply amount at that time, or the engine output shaft Various configurations can be used such as detecting the applied shaft torque and obtaining the load from the shaft torque.

(7) In the above-described embodiment, a pair of sub-display units are provided on both the left and right sides of the main display unit, and the engine rotation speed and the fuel remaining amount are displayed on the sub-display units as notification information. However, the notification information other than the engine rotation speed and the remaining amount of fuel may be displayed as the notification information, and the auxiliary display portion is separated from the main display portion without providing the left and right sides of the main display portion. It may be provided. Moreover, it is good also as a structure which is not provided with such a sub display part.

(8) In the above-described embodiment, the engine load display unit is configured to blink all of the plurality of lighting units in an abnormal state in which an abnormality has occurred in the combine. It is good also as a structure which does not perform the blink display for.

(9) In the above-described embodiment, the auxiliary display unit provides, as a plurality of types of notification information, the amount of processed material (sieve) on the rocking sorting plate, the amount of grain storage (fir) in the Glen tank, and the cooling of the engine The information of the water temperature (water temperature) and the like are displayed side by side. However, the plurality of types of notification information are not limited to these illustrated notification information, and various types other than these notification information and work speed. The notification information may be displayed.

(10) In the above embodiment, the auxiliary display unit is configured by a liquid crystal display device. However, the auxiliary display unit is not limited to the liquid crystal display device, and an image display device such as a CRT display device is used. May be configured.
Further, not only the auxiliary display unit, but the entire display unit may be displayed as image information using an image display device such as a liquid crystal display device or a CRT display device.

(11) In the above embodiment, the present invention is applied to a harvesting combine as a work machine, but the present invention can also be applied to a work machine such as a tractor or a construction machine other than the combine.

Overall side view Configuration diagram of threshing unit Diagram showing power transmission system Front view of display unit Diagram showing the configuration of the engine load indicator Diagram showing the configuration of the engine load indicator The figure which shows the structure of an auxiliary transmission display part. The figure which shows the structure of a cutting shift display part Control block diagram The figure which shows the display state of an auxiliary display part Flow chart of control operation The figure which shows the display state of an auxiliary display part The figure which shows the display state of an auxiliary display part Plan view of the operation unit Perspective view of main transmission lever

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cutting part 12 Working speed display part 12a Instruction part 13 Engine load display part 14 Engine rotational speed display part 15 Fuel display part 16, 17, 18 Shift display part 23, 24 Shift display part 28 Display control means 30 Traveling device 39 Main shift Device 42 Sub-transmission device 43 Mowing transmission device E Engine FH Display device for sub-transmission device KH Display device for mowing transmission device Q1 Work speed display setting route Q2 Load display setting route

Claims (6)

A display device for a work machine comprising display means for displaying a shift state of a transmission that can be switched to a plurality of shift states,
The display means is
A plurality of shift display units arranged in parallel corresponding to the plurality of shift states, and among the plurality of shift display units, the shift display unit corresponding to the current shift state is set to the shift display state and the other shift display units A display device for a work machine configured to include display control means for controlling display operations of the plurality of shift display units so as to be in a non-shift compatible state. Each of the plurality of shift display portions is configured to represent the corresponding shift state as character information and can be switched between a bright display state and a dark display state,
Of the plurality of shift display units, the display control unit sets the shift display unit corresponding to the current shift state as the shift-compatible display state as the bright display state, and sets the other shift display units as non-shift-compatible states. The display device according to claim 1, wherein the display device is configured to be in a dark display state. The work machine is composed of a traveling device driven by the power of the engine and a combine equipped with a cutting unit,
The transmission is
A sub-transmission device that transmits a shift power obtained by shifting the output of the engine by a main transmission to the travel device after shifting, and a gear shift power obtained by shifting the output of the engine by the main transmission. Consists of a cutting transmission that transmits to the cutting unit,
The display means is
3. The display device for a sub-transmission device for displaying a shift state of the sub-transmission device, and a display unit for a mowing transmission device for displaying the shift state of the mowing transmission device. Display device for work machines. A display panel provided in front of the driver's seat has a work speed display section, an engine speed display section, and a fuel display section for displaying the remaining fuel amount between the engine speed display section and the fuel display section. Are provided in a side-by-side state where the work speed display is located,
The shift display section in the display means for the sub-transmission device and the shift display section in the display means for the harvesting transmission device, one of which is below the engine rotation speed display section and the other is the fuel display. The display device for a working machine according to claim 3, wherein the display device is provided in a state of being positioned below the portion. An image display type information display unit is provided below the work speed display unit,
The display control means is configured to control a display operation of the information display unit so as to switch and display a plurality of types of notification information to be notified to an operator during operation of the work machine. The display device of the working machine described. The work speed display unit moves the work speed display instruction unit according to the work speed along the arc-shaped work speed display setting path that protrudes upwards between the minimum speed display position and the maximum speed display position. Configured as
The engine load display unit displays the load along an upwardly projecting arc-shaped load display setting path that extends between the minimum load display position and the maximum load display position and is arranged on the outer side of the operation speed display setting path. The display device for a work machine according to claim 4 or 5, wherein the indication unit is provided so as to move in accordance with an engine load.

Images