Work machine

Abstract

The invention provides a work machine capable of improving operability. A work machine (100) is provided with a drive source (11), a travel unit (1), a work unit (2), a first operation unit (50), and a second operation unit (60). The drive source (11) generates a drive force. The traveling unit (1) travels by means of a driving force. The work unit (2) performs work using a driving force. The first operation unit (50) receives an operation for changing the traveling state of the traveling unit (1). The second operation unit (60) receives an operation for switching the supply target of the driving force between the travel unit (1) and the work unit (2).

Description

Technical Field

[0001] The invention relates to a working machine. Background Art

[0002] The working vehicle described in Patent Document 1 includes a transmission, an actuator, a cross-bar type operating member, and a control device. The transmission changes the speed of the driving force transmitted from the driving source to the traveling portion. The actuator operates the transmission component. The operating member is applied with force so as to be able to move in the front, rear, left, and right directions and return to a neutral position. The control device makes the left and right directions of the operating member function differently according to the shift gear of the transmission. When switching to field operations, such as reseeding operations on a seedling carrier, the operator operates the operating member from the neutral speed position to the reseeding operation position.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-202632 Summary of the invention

[0006] Regarding the working vehicle described in Patent Document 1, when the operating member is operated to change the gear, the operating member is restored to the neutral position after the gear change. For example, when the seedling replanting operation is completed and the neutral speed of the driving mode is restored from the working mode, the operator may accidentally operate the gear of the driving mode. Similarly, when switching from the driving mode to the working mode, the operating member is in the neutral position, so it is not easy for the operator to operate the operating member intuitively.

[0007] The present invention provides a working machine capable of improving operability.

[0008] A working machine according to one embodiment of the present invention comprises a driving source, a traveling unit, a working unit, a first operating unit, and a second operating unit. The driving source generates a driving force. The traveling unit travels using the driving force. The working unit performs work using the driving force. The first operating unit receives an operation for changing the traveling state of the traveling unit. The second operating unit receives an operation for switching to a specific mode. The specific mode is a mode for performing at least one of stopping the transmission of the driving force to the working unit and reducing the driving force to form an idle state.

[0009] Effects of the Invention

[0010] According to the present invention, it is possible to provide a working machine capable of improving operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a side view of the working machine which concerns on Embodiment 1.

[0012] Figure 2 It is a perspective view showing the front part of the working machine.

[0013] Figure 3 It is a top view showing the speed change unit.

[0014] Figure 4 It is a top view showing the front part of the working machine.

[0015] Figure 5 It is a side view showing the front part of the working machine.

[0016] Figure 6 It is a perspective view showing the lever, the indicator portion, and the second operating portion.

[0017] Figure 7 This is a diagram showing the lever, the indicator portion, and the second operating portion as viewed from the rear.

[0018] Figure 8 This is a diagram showing the lever, the indicator portion, and the second operating portion as viewed from the side.

[0019] Fig. 9 This is a side view showing the front portion of the working machine according to the second embodiment.

[0020] Fig.10 It is a perspective view showing a lever, an indicator portion, and a second operating portion according to the second embodiment.

[0021] Fig.11 This is a schematic block diagram of the main parts of the working machine involved in the third embodiment.

[0022] Fig.12 This is a graph showing an example of the relationship between the operation amount of the actuator of the working machine according to the third embodiment, the rotation speed of the drive source, and the HMT speed ratio of the transmission portion.

[0023] Fig.13 This is a flowchart showing an example of the operation of the working machine according to the third embodiment.

[0024] Fig.14 It is a perspective view showing the front portion of a working machine according to a modified example.

[0025] Fig.15 This is a diagram showing a lever, an indicator portion, and a second operating portion according to another modified example as viewed from the rear.

[0026] Fig.16 This is a diagram showing a lever, an indicator portion, and a second operating portion according to another modified example as seen from the side.

[0027] Description of Reference Numerals

[0028] 1…traveling part; 2…working part; 11…driving source; 13…front wheel (wheel); 14…rear wheel (wheel); 20…steering wheel; 40…support part; 50…first operating part; 51…first rod (rod); 51a…

[0029] (First operating part) outer end; 60…Second operating part; 60A…Second operating part; 60B…Second operating part; 80…Marking part; 81a…(Marking part) outer end; 100…Working machine; 100A…Working machine; A1…First position; A2…Second position; A3…Third position; C…Rotation axis; M1…First mark; M2…Second mark; M3…Third mark. DETAILED DESCRIPTION

[0030] Hereinafter, a working machine 100 according to an embodiment of the present invention will be described with reference to the drawings. In addition, in the drawings, the same reference numerals are given to the same or corresponding parts, and the description thereof will not be repeated.

[0031] In the present embodiment, for ease of understanding, the front-rear direction X, the left-right direction Y, and the up-down direction Z are sometimes recorded. The front-rear direction X includes the front X1 and the back X2. The front X1 is the direction in which the work machine 100 moves forward. The back X2 is the opposite direction of the front X1. The left-right direction Y includes the left side Y1 and the right side Y2. The left side Y1 is the direction of the left side when facing the front end of the work machine 100. The right side Y2 is the opposite direction of the left side Y1. The up-down direction Z includes the upper Z1 and the lower Z2. The upper Z1 is the vertical upper side. The lower Z2 is the opposite direction of the upper Z1.

[0032] <Implementation method 1>

[0033] Figure 1 It is a side view of the working machine 100 which concerns on Embodiment 1.

[0034] like Figure 1 As shown, the working machine 100 includes a traveling unit 1 and a working unit 2. In this embodiment, a riding type rice transplanter on which an operator can ride is shown as an example of the working machine 100. However, the working machine 100 involved in the present invention is not limited to this. The working machine 100 can be any working machine as long as it is a working machine used for fields such as a tractor, a rice seedling transfer machine, and a harvester.

[0035] The traveling unit 1 includes a frame 10, a driving source 11, a transmission unit 12, front wheels 13, rear wheels 14, and a plant spacing transmission device 23. The traveling unit 1 travels using the driving force of the driving source 11.

[0036] The driving source 11 generates driving force. The driving source 11 drives the front wheel 13 and the rear wheel 14. The driving source 11 is arranged at the center of the left-right direction Y on the front X1 side of the frame 10. The driving source 11 is, for example, an internal combustion engine that uses light oil as fuel. The driving source 11 transmits the driving force to the transmission 12.

[0037] The front wheel 13 and the rear wheel 14 are provided as a pair on the left and right. The pair of front wheels 13 on the left and right are respectively mounted on both ends of the front axle 13S in the left-right direction Y. The pair of rear wheels 14 on the left and right are respectively mounted on both ends of the rear axle 14S in the left-right direction Y. The front axle 13S is driven by the driving force transmitted from the transmission 12. The rear axle 14S is arranged at the rear X2 of the transmission 12. The driving force is transmitted from the transmission 12 to the rear axle 14S via the rear wheel drive shaft 15. In addition, a crawler (not shown) may be provided instead of the rear wheel 14.

[0038] The operator is seated in the driver's seat 16. The driver's seat 16 is arranged above the frame 10 at Z1. In front of the driver's seat 16 at X1, a partition 17, an engine cover 18, an operation panel 19, a steering wheel 20, a shaft 21, and a preliminary seedling loading stand 22 are arranged.

[0039] The steering wheel 20 steers the travel unit 1. The steering wheel 20 steers the front wheels 13, for example. The steering wheel 20 is, for example, an annular member. The steering wheel 20 transmits the operator's operation amount to a steering mechanism (not shown) via a shaft 21. The operator's operation amount is equivalent to the rotation amount of the steering wheel 20. The steering mechanism steers the front wheels 13 to a steering angle corresponding to the operation amount.

[0040] The amount of operation of the steering wheel 20 is the amount of rotation of the steering wheel 20. The shaft 21 transmits the amount of rotation of the steering wheel 20 to the front wheel 13. The shaft 21 is, for example, a shaft extending upward from the surface of the operation panel 19 toward the upper Z1. The steering wheel 20 is fixed to the end portion of the shaft 21 on the upper Z1 side. The shaft 21 is rotatably supported by the frame 10.

[0041] The seedling raising mat is placed on the preliminary seedling placing platform 22. During the seedling resupply operation, the seedling raising mat is replenished to the working section 2. The preliminary seedling placing platform 22 is arranged in multiple layers along the vertical direction Z at both ends of the engine cover 18 in the horizontal direction Y.

[0042] The row-to-row speed change device 23 outputs the shifted driving force to the working unit 2. The row-to-row speed change device 23 is disposed above the rear axle 14S on one side in the left-right direction Y. The row-to-row speed change device 23 shifts the driving force transmitted from the speed change unit 12 via a drive shaft (not shown). The row-to-row speed change device 23 outputs the shifted driving force to the working unit 2 via a drive shaft 35.

[0043] The working unit 2 uses driving force to perform work. The working unit 2 performs field work. Field work is, for example, planting of rice seedlings. Figure 1 As shown, the working unit 2 includes a seedling loading platform 30 , a main frame 31 , a transplanting mechanism 32 , a central housing 33 and a planting transmission box 34 .

[0044] The seedling platform 30 is provided for placing the seedling mat. The main frame 31 is a rod-shaped member extending in the left-right direction Y. The central housing 33 is arranged at the central part of the main frame 31 in the left-right direction Y. The main frame 31 supports the planting transmission box 34. The planting transmission box 34 is arranged in a plurality of groups, for example, 4 groups. The 4 groups of planting transmission boxes 34 are arranged on the main frame 31 at equal intervals in the left-right direction Y. A pair of left and right transplanting mechanisms 32 are provided in the planting transmission box 34.

[0045] The drive shaft 35 is connected to the input shaft 33A of the central housing 33 via a universal joint. The central housing 33 has a gear train (not shown) including bevel gears. The output shaft (not shown) of the central housing 33 is provided along the main frame 31 and connected to the planting transmission box 34. The driving force is transmitted to the transplanting mechanism 32 via the drive shaft 35, the central housing 33, and the planting transmission box 34.

[0046] The working unit 2 has a lateral conveying driving unit (not shown) that drives the seedling loading platform 30 so as to move it in the left-right direction Y. The transplanting mechanism 32 takes out the seedlings from the seedling loading platform 30 in conjunction with the reciprocating movement of the seedling loading platform 30 in the left-right direction Y and plants them in the field. The working unit 2 has a lifting device 36. The lifting device 36 has a hydraulic cylinder 37, a columnar frame 38, and a connecting rod 39.

[0047] The rear X2 side end of the frame 10 is supported by the columnar frame 38. The columnar frame 38, the base 30a, and the nodes of the upper and lower pair of connecting rods 39 form the four vertices of a parallelogram. The seedling loading platform 30 is connected to the connecting rod 39 by means of the base 30a. The front X1 side end of the hydraulic cylinder 37 is connected to the travel part 1 side, and the rear X2 side end is connected to the lower connecting rod 39. The pair of connecting rods 39 are swung in the up-down direction Z with the node on the columnar frame 38 side as a fulcrum by the extension and contraction of the rod of the hydraulic cylinder 37. When performing the seedling renewal operation, the pair of connecting rods 39 are swung upward Z1, thereby raising the working part 2 including the seedling loading platform 30. The operator replenishes the seedling mat on the raised seedling loading platform 30.

[0048] Next, refer to Figure 2 The working machine 100 according to the present embodiment will be further described. Figure 2 It is a perspective view showing the front part of the working machine 100 .

[0049] like Figure 1As shown in FIG. 1 , the partition plate 17 is supported by the frame 10 and is located in front of the feet of the seated worker X1. The partition plate 17 is a surface that intersects the front-rear direction X.

[0050] like Figure 2 As shown, the partition plate 17 is provided with an opening 171 penetrating in the front-rear direction X. The third lever 71 of the third operating part 70 is arranged in the partition plate 17. The third lever 71 is inserted through the opening 171 and protrudes rearward X2. The third lever 71 is supported to be swingable in the up-down direction Z.

[0051] The operation panel 19 is provided with various operation devices. The operation panel 19 is connected to the end portion on the upper Z1 side of the partition 17 and the end portion on the upper Z1 side of the engine cover 18. The operation panel 19 is a surface that intersects the up-down direction Z. The operation panel 19 is provided with an instrument panel 191, a shaft portion 21, a support portion 40, and a plurality of buttons.

[0052] The working machine 100 further includes a first operating unit 50 and a second operating unit 60. The support unit 40 supports the first operating unit 50 and the second operating unit 60. The support unit 40 is arranged along the shaft 21 on the left side Y1 of the shaft 21. The arrangement of the support unit 40 is not limited to the left side Y1 of the shaft 21. The support unit 40 may also be arranged on the right side Y2 of the shaft 21. In addition, the support unit 40 may be arranged in front of the shaft 21 X1 or rear of the shaft 21 X2.

[0053] The first operating unit 50 receives an operation for changing the travel state of the travel unit 1. The first operating unit 50 includes, for example, a first lever 51. The first lever 51 is operated by an operator. The first lever 51 is operated by an operator sitting in the driver's seat 16 or an operator getting off the vehicle. The first lever 51 changes the shift state of the shift unit 12 according to the position of the operation. The first lever 51 corresponds to, for example, a "lever".

[0054] The second operating unit 60 accepts an operation for switching the supply target of the driving force between the traveling unit 1 and the working unit 2 (hereinafter referred to as a switching operation). The first operating unit 50 and the second operating unit 60 are independently provided, and therefore, the operation objects operated by the operator are different. Since the operation objects are different, it is possible to avoid erroneous operations of accidentally operating the first operating unit 50 when operating the second operating unit 60. In addition, the following switching operation can be easily performed by operating the second operating unit 60: switching the supply target of the driving force between the traveling unit and the working unit. As a result, the operability of the working machine 100 can be improved. The second operating unit 60 has, for example, a push button switch 61 (hereinafter referred to as a switch 61).

[0055] The first operating portion 50 includes the first rod 51 that rotates around the support portion 40. Therefore, the first rod 51 can be easily rotated around the support portion 40. As a result, the first operating portion 50 can be operated simply by rotating the first operating portion 50.

[0056] At least one of the first operating part 50 and the second operating part 60 is arranged below the steering wheel 20. At least one of the operating parts is arranged within a range that can be reached by the operator's hand when the operator is holding the steering wheel 20. Therefore, the first operating part 50 or the second operating part 60 can be operated continuously with respect to the operation of the steering wheel 20. As a result, the operability of the first operating part 50 or the second operating part 60 can be improved. In the present embodiment, both the first operating part 50 and the second operating part 60 are arranged below the steering wheel 20. Therefore, the operability is further improved.

[0057] Next, refer to Figure 3 The speed change unit 12 according to the present embodiment will be described. Figure 3 It is a plan view showing the speed change unit 12 .

[0058] The transmission unit 12 switches the transmission state of the travel unit 1. The transmission unit 12 divides the driving force of the driving source 11 into a first mode and a second mode. The first mode includes a neutral state, which indicates a state in which the driving force is transmitted to the front wheels 13 and the rear wheels 14. The first operating unit 50 receives an operation of the first mode.

[0059] The transmission unit 12 switches the transmission state of the travel unit 1 to a forward speed F, a neutral speed N, and a reverse speed R by operating the first operating unit 50 in the first mode. The forward speed F is a speed gear for the travel unit 1 to move forward in the forward direction X1. The reverse speed R is a speed gear for the travel unit 1 to move backward in the rearward direction X2. The neutral speed N is a speed gear for cutting off the driving force to the front wheels 13 and maintaining the neutral (neutral) state.

[0060] The first operating unit 50 accepts manual operation by the operator. When the first operating unit 50 accepts the operation by the operator, the first operating unit 50 changes the position of the first rod 51 as the operation target. The forward speed F has a planting speed F1 and a moving speed F2. The planting speed F1 is the forward speed when planting seedlings in the field. The first rod 51 is switched to the planting speed F1 by swinging or rotating it from the position of the neutral speed N to the horizontal front X1.

[0061] The moving speed F2 is the forward speed when moving outside the field or when just traveling in the field. The moving speed F2 is a higher gear than the planting speed F1. Figure 2As shown, the moving speed F2 is switched by the third lever 71. When switching from the planting speed F1 to the moving speed F2, the third lever 71 is pressed downward Z2 during the execution of the planting speed F1. When switching from the moving speed F2 to the planting speed F1, the third lever 71 is pressed upward Z1.

[0062] The first rod 51 is swung or rotated from the position of the neutral speed N to the rearward direction X2 in the horizontal direction to switch to the backward speed R. The first rod 51 is arranged at a position along the left-right direction Y to switch to the neutral speed N.

[0063] The support portion 40 supports the first rod 51 so as to be movable to the first position, the second position, and the third position. For example, the first position corresponds to the position of the planting speed F1, the second position corresponds to the position of the neutral speed N, and the third position corresponds to the position of the reverse speed R. In other words, the travel portion 1 switches the travel state according to the movement of the first rod 51. The support portion 40 moves the first rod 51 to the first position to the third position. The travel state can be switched by moving the position of the first rod 51. As a result, the travel state can be easily switched.

[0064] Here, the first lever 51 is supported at a position operated by the operator, and does not return to the position of the neutral speed N (the second position) or the like arbitrarily without depending on the operator's operation. That is, when the operator operates the first lever 51 to the position of the planting speed F1 (the first position), even if the operator releases the first lever, the first lever 51 does not automatically return to the position of the neutral speed N (the second position) or the like, and the first lever 51 is supported at the position of the planting speed F1 (the first position). Thus, the operator can easily operate the first lever 51 intuitively.

[0065] The support portion 40 includes a detection portion 41 that detects the position of the first rod 51. The detection portion 41 is, for example, a proximity sensor. The detection portion 41 detects the position of the moved first rod 51. The detection portion 41 outputs the detected position information of the first rod 51 to the shifting portion 12.

[0066] The second mode indicates a state in which a driving force is transmitted to components other than the wheels 13 to perform field work or work related to field work. The second mode limits the driving of the wheels 13. The second operating unit 60 accepts an operation related to the working unit 2 on the condition that the first operating unit 50 accepts an operation of shifting to the neutral speed N. When performing field work or work related to field work, the first operating unit 50 and the second operating unit 60 are physically separated, so that erroneous operation of the first operating unit 50 can be avoided.

[0067] The second operating unit 60 receives a switching operation. The switching operation is equivalent to a switching operation from the first mode to the second mode, or a switching operation from the second mode to the first mode. The switch 61 is, for example, a toggle switch. When the second mode is executed by turning on the switch 61, the switch 61 is lit. When the execution of the second mode is terminated by turning off the switch 61, the switch 61 is turned off. The lighting of the switch 61 makes it easy to visually confirm that the second mode state is in place.

[0068] like Figure 3 As shown, the speed change portion 12 includes an input shaft 121 , an actuator 130 , an input-side fork shaft 131 , an output shaft 141 , and an output-side fork shaft 151 .

[0069] The input shaft 121 has a planting speed gear 122, a moving speed gear 123, a reverse speed gear 124, and a ball clutch 125. Figure 1 As shown, the driving force of the driving source 11 is transmitted to the input shaft 121 via a hydrostatic continuously variable transmission, a planetary gear mechanism, and a clutch (all omitted from the illustration).

[0070] like Figure 3 As shown, the spherical clutch 125 has a shifter 125S. When the first rod 51 is located at the neutral speed N, the shifter 125S is located, for example, at the center of the input shaft 121 in the left-right direction Y in which the input shaft 121 extends. The center of the input shaft 121 is, for example, a position where the distance between the moving speed gear 123 and the spherical clutch 125 and the distance between the spherical clutch 125 and the reverse speed gear 124 are approximately equal. When the shifter 125S is located at the center of the input shaft 121, the planting speed gear 122 and the reverse speed gear 124 are not connected to the input shaft 121. In addition, at the neutral speed N, the shifter 125S can be configured at a position other than the center of the input shaft 121.

[0071] When the shifter 125S slides to the left side Y1 from the center position, the planting speed gear 122 is connected to the input shaft 121. Thus, the planting speed F1 is performed. When the shifter 125S slides to the right side Y2 from the center position, the reverse speed gear 124 is connected to the input shaft 121. Thus, the reverse speed R is performed.

[0072] The input-side fork shaft 131 includes a shift fork 132, a pivot shaft 133, and a rod 134. The actuator 130 is operated based on the position information of the first rod 51.

[0073] When the first rod 51 is operated to the position of the planting speed F1, the actuator 130 pulls the rod 134 in the rearward direction X2. When the actuator 130 shortens the rod 134 in the rearward direction X2, the pivot 133 swings around the fulcrum, and the input side fork shaft 131 and the shifter 125S slide to the left side Y1. When the first rod 51 is operated to the position of the reverse speed R, the actuator 130 pushes the rod 134 forward X1. When the actuator 130 extends the rod 134 in the frontward direction X1, the pivot 133 swings around the fulcrum, and the input side fork shaft 131 and the shifter 125S slide to the right side Y2.

[0074] The output shaft 141 has a sliding gear 142 and a brake 143. The sliding gear 142 includes a planting speed gear 142a and a moving speed gear 142b. The sliding gear 142 is connected to the output shaft 141 by a spline and can slide in the left-right direction Y.

[0075] The output side fork shaft 151 includes a fork 152, a pivot 153, and a rod 154. The fork 152 is coupled to the slide gear 142. The rear X2 side end of the rod 154 is swingably coupled to the left Y1 side end of the pivot 153. The front X1 side end of the rod 154 is connected to the base end of the third rod 71 via a rod or a wire.

[0076] like Figure 2 As shown in FIG. 1 , when the first lever 51 is operated from the position of the neutral speed N to the position of the planting speed F1, the detection unit 41 detects that the first lever 51 is operated to the position of the planting speed F1. When the first lever 51 is operated to the position of the planting speed F1, the actuator 130 pulls the rod 134 in. Figure 3 As shown, the input side fork shaft 131 and the shifter 125S slide to the left side Y1, so that the planting speed gear 122 is connected to the input shaft 121, and the driving force is transmitted to the planting speed gear 142a of the output shaft 141. As a result, the working machine 100 moves forward at the planting speed F1.

[0077] like Figure 2 As shown in FIG. 1 , when the first rod 51 is operated from the position of the neutral speed N to the position of the backward speed R, the detection unit 41 detects that the first rod 51 is operated to the position of the backward speed R. When the first rod 51 is operated to the position of the backward speed R, the actuator 130 pushes out the rod 134. Figure 3 As shown, the input side fork shaft 131 and the shifter 125S slide to the right side Y2, so the reverse speed gear 124 is connected to the input shaft 121, and the driving force is transmitted to the output shaft 141 via the reverse gear. As a result, the working machine 100 reverses at the reverse speed R.

[0078] When the third lever 71 is operated from the upper Z1 to the lower Z2 when the first lever 51 is located at the position of the planting speed F1, the rod 154 slides forward X1. In association with this, the pivot 153 swings around the fulcrum, and the output side fork shaft 151 and the sliding gear 142 slide to the right side Y2. Then, the planting speed gear 142a is disengaged from the planting speed gear 122, and the moving speed gear 142b is connected to the moving speed gear 123. The driving force is transmitted to the moving speed gear 142b of the output shaft 141, so that the working machine 100 moves forward at the moving speed F2.

[0079] like Figure 2 As shown, when the first lever 51 is at the neutral speed N, when the switch 61 is turned on, the speed change unit 12 maintains the neutral speed N. The working unit 2 performs the second mode, such as an operation associated with the seedling replanting operation. Specifically, Figure 1 As shown, by operating the hydraulic cylinder 37, the pair of link parts 39 are swung upward Z1, thereby raising the working unit 2 including the seedling placing platform 30. The worker replenishes the seedling raising mat to the raised seedling placing platform 30.

[0080] Next, refer to Figures 4 to 8 The first operating unit 50 and the second operating unit 60 according to the present embodiment will be described in detail. Figure 4 It is a plan view showing the front part of the working machine 100. Figure 5 It is a side view showing the front part of the working machine 100. Figure 6 It is a perspective view showing the first lever 51 , the indicator portion 80 , and the second operating portion 60 . Figure 7 This is a diagram showing the first lever 51 , the indicator portion 80 , and the second operating portion 60 as viewed from the rear. Figure 8 This is a diagram showing the first lever 51 , the indicator portion 80 , and the second operating portion 60 as viewed from the side.

[0081] like Figure 4 As shown in FIG. 1 , the support portion 40 is included in the area surrounded by the annular steering wheel 20 in a plan view. The support portion 40 is located at a position Z2 below the steering wheel 20. The support portion 40 supports the end portion on the right side Y2 of the first rod 51 at the end portion on the upper Z1 side. The support portion 40 accommodates a detection portion 41 for detecting the position of the first rod 51 at the end portion on the upper Z1 side.

[0082] like Figures 4 to 6 As shown in FIG. 1 , the working machine 100 further includes a marking unit 80. Figure 4 and Figure 6 As shown in FIG. 1 , the indicator portion 80 guides the operation direction of the first lever 51 . The indicator portion 80 includes a main body portion 81 and an extension portion 82 .

[0083] like Figure 7As shown in FIG. 1 , the end of the indicator portion 80 on the left side Y1 is located at a position closer to the left side Y1 than the end of the first rod 51 on the left side Y1. In other words, in the radial direction of the rotation axis C of the first rod 51, the outer end 81a of the indicator portion 80 is located at a position closer to the outside than the outer end 51a of the first rod 51. Therefore, when the operator rides on the work machine 100, the indicator portion 80 protects the first rod 51. As a result, the interference between the operator's feet and the first rod 51 can be more reliably avoided.

[0084] The marking portion 80 is disposed at a lower position Z2 than the first rod 51. Therefore, the marking portion 80 does not cover the upper portion Z1 of the first rod 51, and thus the operator's visual confirmation of the first rod 51 can be ensured. In addition, the marking portion 80 is located at a lower position Z2 of the first rod 51, and thus, for example, when the operator rides on the work machine 100 or passes from the side of the engine cover 18, the first rod 51 can be prevented from contacting the operator's feet. Therefore, the visual confirmation of the first rod 51 can be ensured, and, for example, interference between the operator and the first rod 51 can be suppressed.

[0085] The main body 81 extends along the front-rear direction X. Figure 4 and Figure 8 As shown in FIG. 1 , the main body 81 includes an area corresponding to the first position A1 of the first rod 51, an area corresponding to the second position A2 of the first rod 51, and an area corresponding to the third position A3 of the first rod 51. The area corresponding to the first position A1 is located at a position X1 further forward than the area corresponding to the second position A2. The area corresponding to the second position A2 is located at a position X1 further forward than the area corresponding to the third position A3.

[0086] like Figure 4 and Figure 6 As shown, the main body 81 has a first mark M1, a second mark M2, and a third mark M3. The first mark M1 is a mark indicating the planting speed F1. The first mark M1 corresponds to the first position A1. The second mark M2 is a mark indicating the neutral speed N. The second mark M2 corresponds to the second position A2. The third mark M3 is a mark indicating the backward speed R. The third mark M3 corresponds to the third position A3. Therefore, the marking portion 80 guides the operating direction of the first rod 51, so that the operator can easily operate the first rod 51. Moreover, as shown in FIG. Figure 8 As shown in FIG. 1 , the center portion of the first rod 51 is shaped to protrude upward Z1 , so that it is easy for a fingertip to be caught, and the operation becomes easier.

[0087] The end of the extension portion 82 on the right side Y2 is supported by the support portion 40. The end of the extension portion 82 on the left side Y1 is connected to the center position of the main body 81 in the front-rear direction X. Figure 6 and Figure 7As shown, the extension portion 82 supports the second operating portion 60. That is, the marking portion 80 supports the second operating portion 60. Therefore, the second operating portion 60 and the marking portion 80 can be formed into one component. That is, the second operating portion 60 and the marking portion 80 can be integrated, so that miniaturization can be achieved. In addition, by forming one component, the number of components can be reduced.

[0088] The marking portion 80 is disposed between the first lever 51 and the second operating portion 60. The marking portion 80 can be interposed between the first operating portion 50 and the second operating portion 60. When the second operating portion 60 is operated, interference between the operator's hand and the first operating portion 50 can be suppressed. As a result, erroneous operation of the first operating portion 50 can be further suppressed. Similarly, erroneous operation of the second operating portion 60 can be further suppressed.

[0089] The second operating portion 60 includes a switch 61 and a mounting portion 62. Figure 7 and Figure 8 As shown in the figure, the second operating portion 60 is located at a position Z2 below the indicator portion 80. The mounting portion 62 is mounted on the lower surface of the extension portion 82. The switch 61 is supported by the end portion on the left side Y1 side of the mounting portion 62. Therefore, the second operating portion 60 is arranged at a position Z2 below the first rod 51 and partially overlaps with the first rod 51 when viewed from above. It is easy to shorten the distance between the first rod 51 and the second operating portion 60, so that the operability can be improved.

[0090] like Figure 4 and Figure 6 As shown, the second operating portion 60 is arranged at a position overlapping the first rod 51 located at the second position A2 in a plan view. The distance from the first rod 51 located at the second position A2 to the second operating portion 60 can be shortened, so the operability of the second operating portion 60 can be improved.

[0091] <Implementation method 2>

[0092] Next, refer to Fig. 9 and Fig.10 A second embodiment of the working machine 100A will be described. Fig. 9 This is a side view showing the front portion of the working machine 100A according to the second embodiment. Fig.10 1 is a perspective view showing the first rod 51, the indicator portion 80, and the second operating portion 60A involved in Embodiment 2. In Embodiment 2, the position and shape of the second operating portion 60A are mainly different from those in Embodiment 1. The differences between Embodiment 2 and Embodiment 1 are described below, and the description of other parts of Embodiment 1 is cited in Embodiment 2.

[0093] The second operating unit 60A receives an operation for switching the supply destination of the driving force between the travel unit 1 and the working unit 2. The switching operation corresponds to switching from the first mode to the second mode, or switching from the second mode to the first mode. Fig. 9 and Fig.10 As shown in FIG. 1 , the second operation unit 60A is disposed on the operation panel 19. The second operation unit 60A includes a switch 61A.

[0094] like Fig. 9 and Fig.10 As shown, the switch 61A is disposed on the operation panel 19. When the second mode is executed by turning on the switch 61A, the switch 61A is lit. When the execution of the second mode is terminated by turning off the switch 61A, the switch 61A is turned off. The execution of the second mode is notified by turning on the switch 61A.

[0095] The switch 61A is located at a position Z2 below the indicator portion 80 on the left side Y1 of the shaft portion 21. By separating the first rod 51 and the switch 61A, the operator's hand is prevented from contacting the switch 61A.

[0096] The switch 61A is arranged at a position overlapping with the first rod 51 located at the second position A2 when viewed from above. The second position A2 of the first rod 51 corresponds to the neutral speed N. The positional relationship between the first rod 51 located at the second position A2 and the switch 61A can be made in the up-down direction Z, so the moving path can be simplified. As a result, the operability of the second operating portion 60A can be improved.

[0097] <Implementation method 3>

[0098] Next, refer to Figure 11 to Figure 13 The working machine 100 according to Embodiment 3 is described. The working machine 100 according to Embodiment 3 is different from the working machine 100 according to Embodiment 1 mainly in the operation when the second operating unit 60 is operated. The differences from Embodiment 1 are described below, and the description of other parts of Embodiment 1 is appropriately cited in Embodiment 3.

[0099] In the present embodiment, the second operating unit 60 accepts an operation to switch to a specific mode. The specific mode is a mode that executes at least one of stopping the transmission of the driving force of the driving source 11 to the working unit 2 and reducing the driving force of the driving source 11 to form an idle state. In the present embodiment, the working machine 100 is a rice transplanter, and a mode (seedling renewal mode) suitable for an operator to perform a seedling renewal operation of replenishing the seedling mat on the seedling platform 30 of the working unit 2 is an example of a specific mode. That is, in order to switch the action mode of the working machine 100 to a specific mode (seedling renewal mode) suitable for the seedling renewal operation, the second operating unit 60 is operated.

[0100] In the present embodiment, as an example, the specific mode (seedling-renewing mode) stops the transmission of the driving force of the driving source 11 to the working unit 2, and reduces the driving force of the driving source 11 to form an idle state. That is, the working machine 100 of the present embodiment stops the transmission of the driving force of the driving source 11 to the working unit 2 in the specific mode (seedling-renewing mode), and reduces the driving force of the driving source 11 to form an idle state. Thus, in the specific mode, for example, the operation of the working unit 2 can be made invalid to prevent the working unit 2 from accidentally performing an action, and the driving source 11 becomes an idle state to reduce the fuel consumption and noise of the driving source 11.

[0101] In more detail, Fig.11 As shown, as an operating unit operated by the operator, the working machine 100 according to the present embodiment further includes a fourth operating unit 90 in addition to the first operating unit 50 and the second operating unit 60. The fourth operating unit 90 includes, for example, a speed change pedal provided on the sole (floor) of the operator sitting on the driver's seat 16 and used to operate the working unit 2. The speed change pedal causes the working unit 2 to perform an action according to the amount of stepping and the driving force from the driving source 11.

[0102] The working machine 100 includes a control unit 91 and an actuator 92. At least the first operating unit 50, the second operating unit 60, and the fourth operating unit 90 are electrically connected to the control unit 91.

[0103] The control unit 91 is mainly composed of a computer system having one or more processors such as a CPU (Central Processing Unit), and one or more memories such as a ROM (Read Only Memory) and a RAM (Random Access Memory), and performs various processes (information processing). In the present embodiment, the control unit 91 is mainly composed of a computer system having one or more processors, and therefore, the control unit 91 is realized by executing a control program by one or more processors. In the present embodiment, the control unit 91 is an integrated controller that controls the entire working machine 100, for example, it is composed of an electronic control unit (ECU: Electronic Control Unit). However, the control unit 91 can also be provided separately from the integrated controller.

[0104] The control unit 91 is configured to be able to communicate with the devices provided in various parts of the working machine 100. Based on the first operating unit 50, the second operating unit 60 and the fourth operating unit 90, at least the actuator 92 is electrically connected to the control unit 91. Thus, the control unit 91 can control the actuator 92 or obtain the operating state of the actuator 92 using a sensor (or encoder) provided on the actuator 92. Here, the control unit 91 can directly send and receive various information (data) with each device, or can do so indirectly with the aid of a repeater or the like.

[0105] The actuator 92 is controlled by an electric signal (current output) from the control unit 91 to control the drive source 11 and the speed change unit 12. The actuator 92 is composed of, for example, an electric motor, and controls the drive source 11 by wire operation and controls the speed change unit 12 by rod operation.

[0106] In the present embodiment, as an example, the driving source 11 is an internal combustion engine (engine). The actuator 92 is configured to at least be able to control the rotation speed of the driving source 11 (engine). Thus, the control unit 91 controls the driving source 11 by means of the actuator 92, and at least is able to control the rotation speed of the driving source 11 to a target rotation speed.

[0107] In addition, in the present embodiment, as an example, the transmission unit 12 is a hydraulic mechanical transmission (HMT). The transmission unit 12 transmits the driving force of the driving source 11 to at least the working unit 2, and changes the movement speed of the working unit 2. In particular, here, a continuously variable transmission is used as the transmission unit 12, and even if the rotation speed of the driving source 11 (engine) is constant, the movement speed of the working unit 2 can be changed steplessly by the transmission unit 12. Thus, the control unit 91 controls the transmission unit 12 by means of the actuator 92, and can at least control the movement speed of the working unit 2.

[0108] Fig.12 FIG. 1 shows an example of a control mode of the drive source 11 of the actuator 92 and the speed change unit 12. Fig.12 In FIG. 1 , the horizontal axis represents the operation amount of the actuator 92 , and the rotation speed G1 of the drive source 11 (engine) and the HMT speed ratio G2 of the transmission portion 12 are shown.

[0109] according to Fig.12It is clear that if the actuator 92 is in the range from the seedling refueling idle position P1 to the normal idle position P2, the HMT speed ratio G2 is fixed to "0". Similarly, the rotational speed G1 of the drive source 11 (engine) changes in proportion to the operation amount of the actuator 92 in such a way that it becomes an idle state (minimum speed R1) at the seedling refueling idle position P1 and changes to a normal idle state (idle speed R2) at the normal idle position P2. On the other hand, if the actuator 92 is in the range from the normal idle position P2 to the maximum speed position P3, the rotational speed G1 of the drive source 11 (engine) and the HMT speed ratio G2 both change in proportion to the operation amount of the actuator 92.

[0110] Here, in the present embodiment, the control unit 91 is configured to be able to switch between three modes, namely, a specific mode (seedling-renewing mode), a normal mode, and a waiting mode, as an action mode. In the normal mode, the control unit 91 operates the actuator 92 between the normal idle position P2 and the highest speed position P3 according to the amount of stepping on the speed change pedal of the fourth operating unit 90. That is, in the normal mode, if the amount of stepping on the speed change pedal of the fourth operating unit 90 increases, the rotation speed G1 of the driving source 11 (engine) and the HMT speed ratio G2 increase while being linked to each other, and the action speed of the working unit 2 gradually becomes high speed.

[0111] In addition, the control unit 91 fixes the actuator 92 at the normal idle position P2 in the waiting mode. That is, in the waiting mode, regardless of the amount of depression of the speed change pedal of the fourth operating unit 90, the HMT speed ratio G2 is fixed to "0", and the speed G1 of the driving source 11 (engine) is fixed to the idle speed R2 (> R1).

[0112] In addition, the control unit 91 fixes the actuator 92 at the re-seedling idle position P1 in a specific mode (re-seedling mode). That is, in the specific mode, regardless of the amount of depression of the speed change pedal of the fourth operating unit 90, the HMT speed ratio G2 is fixed to "0", and the rotation speed G1 of the drive source 11 (engine) is fixed to the minimum rotation speed R1 (<R2). In the present embodiment, if the HMT speed ratio G2 is "0", the transmission of the driving force of the drive source 11 is stopped not only to the working unit 2 but also to the traveling unit 1. Therefore, in the specific mode (re-seedling mode), the transmission of the driving force of the drive source 11 to the working unit 2 and the traveling unit 1 is stopped, and the driving force of the drive source 11 is reduced to form an idle state. Therefore, in the specific mode, not only the operation of the working unit 2 is invalidated, but also the operation of the traveling unit 1 is invalidated, thereby preventing the working unit 2 and the traveling unit 1 from accidentally performing actions.

[0113] Below, refer to Fig.13The conditions for the control unit 91 to switch the operation mode between the specific mode (seedling regeneration mode), the normal mode, and the waiting mode are described. The control unit 91 basically switches the specific mode, the normal mode, and the waiting mode according to the operation status of the first operation unit 50 and the second operation unit 60.

[0114] Specifically, the control unit 91 switches between the non-permitted seedling state and the permitted seedling state according to the operation of the switch 61 of the second operating unit 60. In the present embodiment, the switch 61 is a momentary switch, and the control unit 91 switches between the non-permitted seedling state and the permitted seedling state whenever the switch 61 is pressed.

[0115] Here, by default (i.e., when the working machine 100 is started), the operation mode of the control unit 91 is the normal mode (S1) and is in a state where re-seedling is not allowed (S2). At this time, the control unit 91 operates the actuator 92 between the normal idle position P2 and the maximum speed position P3 according to the amount of depression of the speed change pedal of the fourth operating unit 90, so that the working unit 2 performs an action. In this state, if the switch 61 of the second operating unit 60 is pressed (the operation is turned on) (S3: Yes), the control unit 91 switches the state from the state where re-seedling is not allowed to the state where re-seedling is allowed (S4). On the other hand, if the switch 61 of the second operating unit 60 is not pressed (S3: No), the control unit 91 continues the state where re-seedling is not allowed (S2).

[0116] In the state where seedling replanting is allowed, if the first rod 51 of the first operating part 50 changes to the position of the neutral speed N (the second position) (S5: Yes), the control part 91 switches the action mode from the normal mode to the waiting mode (S6). The waiting mode is an action mode in waiting for switching to a specific mode (seedling replanting mode). At this time, regardless of the amount of depression of the speed change pedal of the fourth operating part 90, the control part 91 fixes the HMT speed ratio to "0" and stops the transmission of the driving force of the driving source 11 to the working part 2, so that the speed of the driving source 11 (engine) is reduced to the idle speed R2. On the other hand, if the first rod 51 is in a position other than the neutral speed N (S5: No), the control part 91 continues to execute the normal mode.

[0117] Furthermore, if a constant time (for example, 2 seconds) has passed (S7: Yes), the control unit 91 switches the operation mode from the waiting mode to the specific mode (seedling-renewing mode) (S8). At this time, regardless of the amount of stepping on the speed change pedal of the fourth operating unit 90, the control unit 91 sets the HMT speed ratio to "0" so that the rotation speed of the driving source 11 (engine) is further reduced from the idle speed R2 to the minimum speed R1. Until the constant time has passed (S7: No), the control unit 91 continues to execute the waiting mode (S6).

[0118] but, Fig.13The flowchart shown is merely an example, and processing may be appropriately added or omitted, or the order of processing may be appropriately changed.

[0119] For example, although not included in Fig.13 However, after the first rod 51 of the first operating part 50 is operated to the position of the neutral speed N (the second position), when the switch 61 of the second operating part 60 is pressed, the action mode of the control part 91 is also switched to the specific mode (seedling renewal mode). Specifically, in the state where seedling renewal is not allowed, the first rod 51 of the first operating part 50 is operated to the position of the neutral speed N (S5: Yes). In this state, if the switch 61 of the second operating part 60 is pressed, the action mode of the control part 91 skips the waiting mode from the normal mode and switches to the specific mode. That is, if the switch 61 of the second operating part 60 is pressed when the first rod 51 of the first operating part 50 is at the position of the neutral speed N, the action mode of the control part 91 is immediately switched to the specific mode without waiting for a constant time to pass.

[0120] In addition, when the action mode of the control unit 91 is in the specific mode, if the first lever 51 of the first operating unit 50 is switched to a position other than the neutral speed N, that is, the position of the planting speed F1 (the first position) or the position of the backward speed R (the third position), the release condition is satisfied and the specific mode is released. That is, if the first lever 51 of the first operating unit 50 is operated to a position other than the neutral speed N in the specific mode, the release condition is satisfied, and the control unit 91 switches the action mode from the specific mode to the normal mode. If the action mode is switched to the normal mode, the control unit 91 starts transmitting the driving force of the driving source 11 to the working unit 2 again to increase the rotation speed of the driving source 11 (engine).

[0121] Furthermore, when the operation mode of the control unit 91 is in the specific mode, the release condition is satisfied even when the switch 61 of the second operation unit 60 is pressed. That is, when the first rod 51 of the first operation unit 50 is fixed to the position of the neutral speed N in the specific mode, if the switch 61 of the second operation unit 60 is pressed, the release condition is satisfied, and the control unit 91 switches the operation mode from the specific mode to the normal mode.

[0122] As described above, when the second operating part 60 is operated, if the first operating part 50 is changed to a specific operating state, the specific mode is switched. In the present embodiment, the first lever 51 of the first operating part 50 is in a position of a neutral speed N as an example of a specific operating state. Thus, for example, by operating the switch 61 of the second operating part 60 in advance to form a state in which seedling renewal is permitted, the action mode can be switched to the specific mode by simply operating the first lever 51 of the first operating part 50 to the position of the neutral speed N. Therefore, the specific mode can be switched by a relatively simple operation.

[0123] Furthermore, if the switch 61 of the second operating unit 60 is operated in advance to set the seedling-not-renewing state, the operation mode will not be switched to the specific mode simply by operating the first lever 51 of the operating unit 50 to the position of the neutral speed N. Therefore, the operator can be prevented from accidentally switching to the specific mode.

[0124] Furthermore, in the present embodiment, the first operating part 50 is switched to a specific mode after a constant time has passed since the first operating part 50 has been changed to a specific operating state. That is, for example, after the switch 61 of the second operating part 60 is operated to form a state in which the seedling renewal is permitted, when the first rod 51 of the first operating part 50 is in a position of a neutral speed N, the specific mode is not immediately switched to, but the specific mode is switched to after a constant time has passed. Therefore, for example, when the first rod 51 of the first operating part 50 is switched from a position of a planting speed F1 (the first position) to a position of a retreat speed R (the third position), switching to the specific mode can be avoided by passing only from a position of a neutral speed N (the second position). Therefore, it is possible to prevent the operator from accidentally switching to the specific mode.

[0125] In addition, when the first operating part 50 is in a specific operating state, if the second operating part 60 is operated, the specific mode is switched. That is, as described above, after the first rod 51 of the first operating part 50 is operated to the position of the neutral speed N (the second position), when the switch 61 of the second operating part 60 is pressed, the operation mode of the control part 91 is also switched to the specific mode (seedling-renewing mode). Thus, from the state where the first rod 51 of the first operating part 50 is in the position of the neutral speed N, it is possible to switch to the specific mode by a relatively simple operation of operating only the second operating part 60.

[0126] In addition, if the specific operation state of the first operating unit 50 is released in the specific mode, the specific mode is terminated. That is, as described above, when the operation mode of the control unit 91 is in the specific mode, if the first rod 51 of the first operating unit 50 is switched to a position other than the neutral speed N, the release condition is satisfied and the specific mode is released. Thus, the operation of terminating the specific mode and returning to the normal mode is relatively simple.

[0127] In addition, the operation mode of the control unit 91 is represented by, for example, the lighting state (lighting state) of the light-emitting unit (LED) that is integrated with or adjacent to the switch 61. As an example, if the control unit 91 is in the normal mode, the light-emitting unit is lit or extinguished, and on the contrary, if the control unit 91 is in the specific mode, the light-emitting unit flashes. Furthermore, if the control unit 91 is in the state where seedling renewal is not allowed, the light-emitting unit is extinguished, and if the control unit 91 is in the state where seedling renewal is allowed, the light-emitting unit is lit, thereby indicating the state where seedling renewal is not allowed / the state where seedling renewal is allowed. As a result, as an operator, it is possible to visually confirm the operation mode and the like more easily based on the lighting state of the light-emitting unit.

[0128] However, in the lifting action of the working part 2 based on the lifting device 36, it is preferred to prohibit switching to the specific mode (seedling renewal mode) as an exception. That is, in the lifting action of the working part 2, after the second operating part 60 is operated to form a state of allowing seedling renewal, after the first rod 51 of the first operating part 50 is in the position of the neutral speed N, it is not switched to the specific mode even after a constant time has passed, so the rotation speed of the driving source 11 (engine) is not reduced. In this case, when the lifting action of the working part 2 ends, or after the lifting action ends, when a constant time has passed, the control unit 91 can switch to the specific mode and reduce the rotation speed of the driving source 11 (engine).

[0129] In short, during the lifting operation of the working unit 2 based on the lifting device 36, if the rotation speed of the driving source 11 (engine) is reduced, it is possible that the lifting speed of the working unit 2 is reduced, or the working unit 2 cannot be lifted. In this embodiment, during the lifting operation of the working unit 2, switching to a specific mode (seedling-renewing mode) is exceptionally prohibited, so the above-mentioned adverse conditions caused by the reduction in the rotation speed of the driving source 11 (engine) can be avoided.

[0130] Furthermore, in the present embodiment, when the action mode of the control unit 91 is in a specific mode and the rotation speed of the drive source 11 (engine) is at the minimum rotation speed R1, if an operation is performed to raise the working unit 2, the control unit 91 restores the rotation speed of the drive source 11 (engine) to the idle speed R2. At this time, the control unit 91 increases the rotation speed of the drive source 11 (engine) while fixing the HMT speed ratio to "0" and stopping the transmission of the driving force of the drive source 11 to the working unit 2. In this case, when the raising action of the working unit 2 is completed, or after the raising action is completed, when a constant time has passed, the control unit 91 can reduce the rotation speed of the drive source 11 (engine) to the minimum rotation speed R1.

[0131] Thus, in the present embodiment, the working unit 2 is supported on the traveling unit 1 in a manner that allows it to be raised and lowered. When the working unit 2 is raised, if the driving force is in an idle state, the driving force is increased to form a normal state. Here, the state in which the rotation speed of the driving source 11 (engine) is at the minimum rotation speed R1 is an example of the idle state of the driving force, and the state in which the rotation speed of the driving source 11 (engine) is at the idle rotation speed R2 is an example of the normal state of the driving force.

[0132] In short, during the lifting operation of the working unit 2 by the lifting device 36, if the rotation speed of the driving source 11 (engine) is at the minimum rotation speed R1, the lifting speed of the working unit 2 may be reduced or the working unit 2 may not be lifted. In the present embodiment, during the lifting operation of the working unit 2, the driving force of the driving source 11 is exceptionally increased from the idle state to the normal state, so the above-mentioned undesirable situation can be avoided.

[0133] In addition, regarding the specific mode, it is sufficient to execute at least one of stopping the transmission of the driving force of the driving source 11 to the working part 2 and reducing the driving force of the driving source 11 to form an idle state, and it is not necessary to execute both of them. For example, the first operating part 50 can not only switch the forward speed F, the neutral speed N and the reverse speed R, but also have an operating lever that can change the speed like the HST operating lever. In this case, the speed change pedal of the fourth operating part 90 is omitted. Therefore, in the specific mode (seedling-renewing mode), there is no function of stopping the transmission of the driving force of the driving source 11 to the working part 2, and only the driving force of the driving source 11 is reduced to form an idle state.

[0134] The structure according to Embodiment 3 can be adopted in combination with various structures (including modified examples) described in Embodiment 1 or Embodiment 2 as appropriate.

[0135] The embodiments of the present disclosure are described above with reference to the accompanying drawings. However, the present disclosure is not limited to the above embodiments, and can be implemented in various ways within the scope of the present disclosure. In addition, the multiple structural elements disclosed in the above embodiments can be appropriately changed. For example, a structural element of all the structural elements shown in a certain embodiment can be added to the structural elements of other embodiments, or several structural elements of all the structural elements shown in a certain embodiment can be deleted from the embodiment.

[0136] In addition, the drawings schematically show the main body of each structural element for easy understanding of the present disclosure. In order to facilitate the preparation of the drawings, the thickness, length, number, spacing, etc. of each structural element shown in the drawings may be different from the actual situation. In addition, the structure of each structural element shown in the above embodiment is an example and is not particularly limited. Of course, various changes can be implemented within the scope that does not substantially deviate from the effect of the present disclosure.

[0137] (1) As reference Figures 1 to 10 As described above, in the above embodiment, when the second mode is executed, the switch 61 or the switch 61A is turned on, and when the execution of the second mode is terminated, the switch 61 or the switch 61A is turned off, but the present invention is not limited to this. Fig.14 As shown, the indicator light 191a can be arranged in the instrument panel 191. When the second mode is executed, the indicator light 191a is lit, and when the execution of the second mode is terminated, the indicator light 191a is turned off. As a result, the execution of the second mode can be easily recognized. In addition, the indicator light is not limited to the instrument panel 191. It can also be arranged at any position in the operation panel 19.

[0138] (2) As reference Figures 1 to 8 As described above, in the present embodiment, the second operating portion 60 is supported by the indicator portion 80 via the mounting portion 62, but the present invention is not limited thereto. Fig.15 and Fig.16 As shown, the second operating portion 60B and the marking portion 80 can be separated and supported by the support portion 40. The second operating portion 60B includes a switch 61 and a mounting portion 62B. The end portion of the mounting portion 62B on the right side Y2 is supported by the support portion 40. The switch 61 is supported by the end portion of the mounting portion 62 on the left side Y1. Thus, the second operating portion 60B can be formed in a manner that can rotate around the support portion 40.

[0139] (3) In the above-mentioned present embodiment, the first operating part 50 and the second operating part 60 are supported by the supporting part 40 on the left side Y1 of the shaft part 21, but the present invention is not limited thereto. The supporting part 40 may also be arranged on the right side Y2 of the shaft part 21. In addition, the supporting part 40 may be omitted. In the case where the supporting part 40 is omitted, the first operating part 50 and the second operating part 60 may be supported by the shaft part 21.

[0140] (4) In the above-mentioned present embodiment, an example in which the first lever 51 is located at the upper Z1 of the indicator portion 80 and the switch 61 is located at the lower Z2 of the indicator portion 80 is described, but the present invention is not limited thereto. The first lever 51 may be located at the lower Z2 of the indicator portion 80 and the switch 61 may be located at the upper Z1 of the indicator portion 80. Alternatively, the first lever 51 and the switch 61 may be located at the upper Z1 of the indicator portion 80. Alternatively, the first lever 51 and the switch 61 may be located at the lower Z2 of the indicator portion 80.

[0141] (5) In the above-mentioned present embodiment, the first lever 51 is configured to stay at the operated position when it is operated to any of the first position A1 and the second position A2, but the present invention is not limited thereto. It may also be configured such that when the first lever 51 is operated, after the gear shift is performed, it returns to the second position A2 corresponding to the neutral speed N. In this case, the type of the operated gear stage may be displayed in the instrument panel 191.

[0142] (6) In the above-described present embodiment, the switch 61 is described as an alternate switch separated from the steering wheel 20 , but the present invention is not limited thereto. The switch of the second operating unit may be a paddle switch and disposed on the steering wheel 20 .

[0143] (7) In the above-mentioned present embodiment, the example in which the driving source 11 is an internal combustion engine has been described, but the present invention is not limited to this. The driving source 11 may also be an electric motor.

[0144] (8) In the above-mentioned embodiment, an example of performing seedling replacement work in the second mode is described, but the present invention is not limited to this. Any work may be performed as long as it is a field work or a work related to the field work, including spreading work, threshing work, etc.

[0145] (9) In the above-mentioned present embodiment, the example in which the third lever 71 of the third operating portion 70 is arranged on the partition plate 17 is described, but the present invention is not limited thereto. The third lever 71 may be arranged on the operating panel 19. In addition, the third lever 71 may be arranged on the support portion 40 in the same manner as the first lever 51. In addition, the first lever 51 and the third lever 71 may be made common, and the first lever 51 may have a speed change function to the moving speed F2.

[0146] The present application discloses the following supplementary notes. The following supplementary notes do not limit the present invention.

[0147] (Note 1)

[0148] A working machine, wherein

[0149] The working machine comprises:

[0150] a driving source, which generates a driving force;

[0151] a traveling unit that travels using the driving force;

[0152] a working unit that performs work by utilizing the driving force;

[0153] a first operating unit that receives an operation for changing a traveling state of the traveling unit; and

[0154] The second operating unit receives an operation for switching to a specific mode in which at least one of stopping the transmission of the driving force to the working unit and reducing the driving force to an idle state is executed.

[0155] (Note 2)

[0156] The operating machine according to Appendix 1, wherein:

[0157] The traveling part has wheels.

[0158] The working machine further includes a steering wheel for steering the wheels.

[0159] At least one of the first operating unit and the second operating unit is arranged below the steering wheel.

[0160] (Note 3)

[0161] The working machine according to Appendix 1 or Appendix 2, wherein:

[0162] further comprising a support portion for supporting the first operating portion,

[0163] The first operating portion includes a lever that rotates around the support portion.

[0164] (Note 4)

[0165] The operating machine according to Appendix 3, wherein:

[0166] The support portion supports the rod so as to be movable to a first position, a second position, and a third position.

[0167] The traveling unit switches the traveling state according to the movement of the lever.

[0168] (Note 5)

[0169] The working machine according to Appendix 3 or Appendix 4, wherein:

[0170] It also includes a marking portion for guiding the operating direction of the lever.

[0171] The identification portion has:

[0172] a first mark, which is shown at the first position;

[0173] a second mark, which is shown at the second position; and

[0174] The 3rd mark is shown at the 3rd position.

[0175] (Note 6)

[0176] The operating machine according to Appendix 5, wherein:

[0177] The indicator portion is disposed below the rod.

[0178] (Note 7)

[0179] The working machine according to Appendix 5 or Appendix 6, wherein:

[0180] The indicator portion supports the second operating portion.

[0181] (Note 8)

[0182] The working machine according to any one of Appendix 5 to Appendix 7, wherein:

[0183] In the radial direction of the rotation axis of the rod, the outer end of the indicator portion is located further outward than the outer end of the rod.

[0184] (Note 9)

[0185] The working machine according to Appendix 3 or Appendix 4, wherein:

[0186] The second operating portion is disposed below the lever and at a position partially overlapping the lever in a plan view.

[0187] (Note 10)

[0188] The working machine according to any one of Supplement 3, Supplement 4 and Supplement 9, wherein:

[0189] The second operating portion is disposed at a position overlapping the lever located at the second position in a plan view.

[0190] (Note 11)

[0191] The working machine according to any one of Supplement 3, Supplement 4, Supplement 9 and Supplement 10, wherein:

[0192] It also includes a marking portion for guiding the operating direction of the lever.

[0193] The indicator portion is disposed between the lever and the second operating portion.

[0194] (Note 12)

[0195] The working machine according to any one of Supplementary Notes 1 to 11, wherein:

[0196] When the first operating unit is changed to a specific operating state while the second operating unit is operated, the mode is switched to the specific mode.

[0197] (Note 13)

[0198] The operating machine according to Appendix 12, wherein:

[0199] After a predetermined time has passed since the first operating unit has been in the specific operating state, the mode is switched to the specific mode.

[0200] (Note 14)

[0201] The working machine according to any one of Supplementary Notes 1 to 13, wherein:

[0202] When the first operating unit is in a specific operating state, if the second operating unit is operated, the mode is switched to the specific mode.

[0203] (Note 15)

[0204] The working machine according to any one of Supplementary Notes 12 to 14, wherein:

[0205] When the specific operation state of the first operation unit is released in the specific mode, the specific mode ends.

[0206] (Note 16)

[0207] The working machine according to any one of Supplementary Notes 1 to 15, wherein:

[0208] The working unit is supported by the traveling unit in a manner that allows it to be raised and lowered.

[0209] When the working unit is raised, if the driving force is in the idle state, the driving force is increased to a normal state.

[0210] (Note 17)

[0211] A working machine, wherein

[0212] The working machine comprises:

[0213] a driving source, which generates a driving force;

[0214] a traveling unit that travels using the driving force;

[0215] a working unit that performs work by utilizing the driving force;

[0216] a first operating unit that receives an operation for changing a traveling state of the traveling unit; and

[0217] The second operating unit receives an operation for switching a supply destination of the driving force between the traveling unit and the working unit.

[0218] Possibility of Industrial Application

[0219] The present invention is a working machine and has industrial applicability.

Claims

1. A working machine, wherein: The working machine comprises: a driving source, which generates a driving force; a traveling unit that travels using the driving force; a working unit that performs work by utilizing the driving force; a first operating unit that receives an operation for changing a traveling state of the traveling unit; and The second operating unit receives an operation for switching to a specific mode in which at least one of stopping the transmission of the driving force to the working unit and reducing the driving force to an idle state is executed.

2. The working machine according to claim 1, wherein: The working machine further includes a steering wheel for steering the traveling portion. At least one of the first operating unit and the second operating unit is arranged below the steering wheel.

3. The working machine according to claim 1, wherein: The working machine further includes a support portion for supporting the first operating portion. The first operating portion includes a lever that rotates around the support portion.

4. The working machine according to claim 3, wherein: The support portion supports the rod so as to be movable to a first position, a second position, and a third position. The traveling unit switches the traveling state according to the movement of the lever.

5. The working machine according to claim 4, wherein: The working machine further includes an indicator portion for guiding the operating direction of the lever. The identification portion has: a first mark corresponding to the first position; a second mark corresponding to the second position; and The third mark corresponds to the third position.

6. The working machine according to claim 5, wherein: The indicator portion is disposed below the rod.

7. The working machine according to claim 5 or 6, wherein: The indicator portion supports the second operating portion.

8. The working machine according to claim 5 or 6, wherein: In the radial direction of the rotation axis of the rod, the outer end of the indicator portion is located further outward than the outer end of the rod.

9. The working machine according to claim 4, wherein: The second operating portion is disposed below the lever and at a position partially overlapping the lever in a plan view.

10. The working machine according to claim 9, wherein: The second operating portion is disposed at a position overlapping the lever located at the second position in a plan view.

11. The working machine according to claim 9 or 10, wherein: The working machine further includes an indicator portion for guiding the operating direction of the lever. The indicator portion is disposed between the lever and the second operating portion.

12. The working machine according to any one of claims 1 to 6, wherein: When the first operating unit is changed to a specific operating state while the second operating unit is operated, the mode is switched to the specific mode.

13. The working machine according to claim 12, wherein: After a predetermined time has passed since the first operating unit has been in the specific operating state, the mode is switched to the specific mode.

14. The working machine according to any one of claims 1 to 6, wherein: When the first operating unit is in a specific operating state, if the second operating unit is operated, the mode is switched to the specific mode.

15. The working machine according to claim 12, wherein: When the specific operation state of the first operation unit is released in the specific mode, the specific mode ends.

16. The working machine according to any one of claims 1 to 6, wherein: The working unit is supported by the traveling unit in a manner that allows it to be raised and lowered. When the working unit is raised, if the driving force is in the idle state, the driving force is increased to a normal state.

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