combine

Abstract

To provide a combine capable of enhancing operational safety by detecting an operator in the control section with a plurality of sensors.SOLUTION: A combine comprises a pressure sensor (10S) mounted on an operator's seat (10) in a control section (5) to detect pressure applied to the operator's seat (10) by the operator boarding the control section (5); a front panel (11) disposed in front of the operator's seat (10); a side panel (20) disposed on the left side of the operator's seat (10); and a human detection sensor (26) provided on the side panel (20) to detect the operator boarding the control section (5).SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a combine harvester having a plurality of sensors for detecting an operator in a steering section. [Background technology]

[0002] A technology has been known in which a sensor that detects the presence or absence of a passenger is placed on the dashboard in front of the passenger seat to realize a comfortable in-vehicle environment depending on whether or not there is a passenger (see Patent Document 1).

[0003] In order to improve work safety, a technology was known in which sensors were placed on the front, rear, left and right sides of the combine harvester to measure the distance between the combine harvester and an assistant worker who performs harvesting work around the combine harvester (see Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2001-199290 A [Patent Document 2] JP 2009-106197 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the technology of Patent Document 1, if the sensor malfunctions due to a short circuit or the like, it becomes impossible to detect passengers, and with the technology of Patent Document 2, there is a risk that if the sensor malfunctions due to a short circuit or the like, it becomes impossible to detect assistant workers.

[0006] Therefore, an object of the present invention is to provide a combine harvester that can improve work safety by detecting an operator in the operating section using multiple sensors.

[0007] The present invention which has solved the above problems is as follows. That is, the invention described in claim 1 relates to a combine harvester comprising a traveling device (2) for traveling in a field provided below a machine frame (1) on which an engine (E) is mounted, a reaping device (3) for harvesting stalks provided in front of the machine frame (1), a threshing device (4) for threshing and sorting the stalks provided on the rear left side of the reaping device (3), a steering section (5) provided on the rear right side of the reaping device (3), a grain tank (7) for storing sorted grains provided behind the steering section (5), and a discharge auger (8) for discharging the stored grains to the outside provided behind the grain tank (7), A pressure sensor (10S) is attached to a cockpit (10) of the cockpit (5) to detect pressure applied to the cockpit (10) by an operator who is in the cockpit (5), a front panel (11) is provided in front of the cockpit (10), a side panel (20) is provided on the left side of the cockpit (10), and the side panel (20) Right wall of A human presence sensor (26) for detecting an operator who is on the control section (5) is provided. The human sensor (26) is arranged so that the irradiation direction of the human sensor (26) faces the right side in a plan view, and the human sensor (26) passes in front of the front part of the seat of the pilot's seat (10). This is a combine harvester characterized by the above.

[0008]

[0009]

[0010]

[0011] Claim 2 The invention described in the claims is characterized in that, when the pressure sensor (10S) or the human presence sensor (26) does not detect an operator riding on the control section (5), the output rotation of the continuously variable transmission (30) which increases or decreases the output rotation of the engine (E) and transmits it to the traveling device (2) is stopped. 1 The combine harvester described herein is

[0012] Claim 3 The invention described in the claims further includes a control device for controlling the operation of the engine (E) that controls the operation of the reaping clutch (32) for transmitting the output rotation of the engine (E) to the reaping device (3) and a control device for controlling the operation of the threshing clutch (33) for transmitting the output rotation of the engine (E) to the threshing device (4). 2 The combine harvester described herein is

[0013] Claim 4 The invention described in the claims further comprises a discharge clutch (34) for transmitting the output rotation of the engine (E) to the discharge auger (8) when the pressure sensor (10S) or the human presence sensor (26) does not detect an operator on the control section (5). 3 The combine harvester described herein is Effect of the Invention

[0014] According to the invention described in claim 1, a pressure sensor (10S) is attached to a cockpit (10) of a cockpit (5) to detect a pressure applied to the cockpit (10) by an operator who is in the cockpit (5), a front panel (11) is provided in front of the cockpit (10), a side panel (20) is provided on the left side of the cockpit (10), and the side panel (20) Right wall of A human presence sensor (26) for detecting an operator on the control section (5) is provided. The human sensor (26) was placed so that the irradiation direction of the human sensor (26) was directed to the right side in a plan view, and the human sensor (26) passed in front of the front part of the pilot's seat (10). Therefore, even if one of the pressure sensor (10S) or the human presence sensor (26) fails, the other normal human presence sensor (26) or pressure sensor (10S) can detect the operator who has boarded the control section (5), thereby improving work safety. It is also possible to prevent the human presence sensor (26) from mistakenly detecting the seat of the cockpit (10) as an operator in the cockpit (5).

[0015]

[0016]

[0017]

[0018] Claim 2 According to the invention described, claims 1 In addition to the effects of the invention described above, when the pressure sensor (10S) or the human presence sensor (26) does not detect an operator in the control section (5), the output rotation of the continuously variable transmission (30), which increases or decreases the output rotation of the engine (E) and transmits it to the traveling device (2), is stopped. Therefore, when the operator gets off the control section (5), the traveling device (2) can be stopped from traveling, thereby improving the safety of the work.

[0019] Claim 3According to the invention described, claims 2 In addition to the effects of the invention described above, when the pressure sensor (10S) or the human presence sensor (26) does not detect an operator in the control unit (5), the connection between the harvesting clutch (32), which transmits the output rotation of the engine (E) to the harvesting device (3), and the threshing clutch (33), which transmits the output rotation of the engine (E) to the threshing device (4), is released. Therefore, when the operator gets off the control unit (5), the drive of the harvesting device (3) and the threshing device (4) can be stopped, thereby further improving the safety of the work.

[0020] Claim 4 According to the invention described, claims 3 In addition to the effects of the invention described above, when the pressure sensor (10S) or the human presence sensor (26) does not detect an operator on the control section (5), the discharge clutch (34), which transmits the output rotation of the engine (E) to the discharge auger (8), is disconnected. Therefore, when the operator gets off the control section (5), the drive of the discharge auger (8) can be stopped, further improving the safety of the work. [Brief description of the drawings]

[0021] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] 3 is a transmission diagram of the output rotation of the engine. [Figure 8] FIG. 2 is a connection diagram of a controller. [Figure 9] 4 is an explanatory diagram of a method of operating a reaping device, a threshing device, etc. [Figure 10] 1 is a perspective view of a cabin having an air inlet formed in a front wall of the cabin. FIG. [Figure 11]FIG. 1 is a perspective view of a cabin with an intake port covered with a dust cover. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] As shown in Figures 1 and 2, a combine harvester has a traveling device 2 consisting of a pair of left and right crawlers that travels on the soil surface on the underside of a body frame 1, a harvesting device 3 that harvests grain stalks in the field is provided on the front side of the body frame 1, a threshing device 4 that threshes and sorts the harvested grain stalks is provided on the rear left side of the harvesting device 3, and a control unit 5 on which an operator rides is provided on the rear right side of the harvesting device 3.

[0023] An engine room 6 that mounts an engine E is provided below the control unit 5, a grain tank 7 that stores threshed and sorted grains is provided behind the control unit 5, and a discharge auger 8 consisting of a vertically extending grain lifting section and a horizontal discharge section that extends back and forth to discharge grains to the outside is provided behind the grain tank 7. In addition, the control unit 5 can be equipped with a sun visor that blocks direct sunlight and a cabin 9, which will be described later.

[0024] 3 and 4, a pressure sensor 10S is provided in the cockpit 10 of the control section 5 to detect the pressure applied to the cockpit 10 by an operator. This makes it possible to detect whether or not an operator is in the control section 5.

[0025] A front panel 11 is provided in front of the operator's seat 10, and a touch panel monitor 12 is provided in the center of the front panel 11 to display the output rotation of the engine E and the running speed of the traveling device 2, etc., and an operating lever 13 is provided on the right side of the monitor 12 to control the rotation of the traveling device 2 and the raising and lowering of the harvesting device 3.

[0026] The operating position of the operating lever 13 is measured by an angle sensor such as a potentiometer attached to the lower part of the operating lever 13. When the operating lever 13 is in the forward tilt position, the mowing device 3 descends to the mowing position, when the operating lever 13 is in the rearward tilt position, the mowing device 3 rises to the waiting position, when the operating lever 13 is in the leftward tilt position, the traveling device 2 turns left, and when the operating lever 13 is in the rightward tilt position, the traveling device 2 turns right.

[0027] In a plan view, a floor 14 on which an operator places his / her legs is provided between the cockpit 10 and the front panel 11, and a parking brake 15 for operating the brake that brakes the traveling device 2 is provided at the front left part of the floor 14. In addition, a pressure sensor 14S for detecting the pressure applied to the floor 14 by the operator is provided on the floor 14. This makes it possible to detect whether or not the operator is riding on the control unit 5.

[0028] A side panel 20 is provided on the left side of the cockpit 10. A main speed change lever 21 is provided in front of the side panel 20 to operate a continuously variable transmission 30 that increases / decreases the output rotation output from the engine E and switches the rotation direction, and a sub-speed change lever 22 is provided on the right rear side of the main speed change lever 21 to operate a transmission 31 that increases / decreases the output rotation output from the continuously variable transmission 30.

[0029] On the left rear side of the sub-speed change lever 22 is provided a harvesting / disconnecting lever 23 which operates to connect and disconnect the harvesting clutch 32, which transmits the output rotation of the engine E to the harvesting device 3, and the threshing clutch 33, which transmits the output rotation of the engine E to the threshing device 4.

[0030] A discharge lever 24 is provided on the right rear side of the cutting / removal lever 23 for operating the connection and disconnection of a discharge clutch 34 that transmits the output rotation of the engine E to the discharge auger 8 .

[0031] The operating position of the main shift lever 21 is measured by an angle sensor 21S such as a potentiometer attached to the bottom of the main shift lever 21, the operating position of the sub-shift lever 22 is measured by an angle sensor 22S attached to the bottom of the sub-shift lever 22, the operating position of the mowing / removal lever 23 is measured by an angle sensor 23S attached to the bottom of the mowing / removal lever 23, and the operating position of the discharge lever 24 is measured by an angle sensor 24S attached to the bottom of the discharge lever 18.

[0032] When the main speed change lever 21 is in the neutral position, the output rotation of the continuously variable transmission 30 becomes zero. When the main speed change lever 21 is tilted from the neutral position to the forward tilt position, the direction of the output rotation output from the continuously variable transmission 30 becomes forward rotation, which is the same as the direction of the output rotation of the engine E. When the tilt angle of the forward tilt position is increased, the output rotation of the continuously variable transmission 30 increases, and when the tilt angle of the front tilt position is decreased, the output rotation of the continuously variable transmission 30 decreases. When the main speed change lever 21 is tilted from the neutral position to the rear tilt position, the direction of the output rotation of the continuously variable transmission 30 becomes reverse rotation, which is opposite to the direction of the output rotation of the engine E. When the tilt angle of the rear tilt position is increased, the output rotation of the continuously variable transmission 30 increases, and when the tilt angle of the rear tilt position is decreased, the output rotation of the continuously variable transmission 30 decreases.

[0033] When the sub-speed-change lever 22 is in the neutral position, the output frequency of the transmission 31 is not increased or decreased. When the sub-speed-change lever 22 is moved from the neutral position to a forward tilted position, the output frequency of the transmission 31 is increased, and when the sub-speed-change lever 22 is moved from the neutral position to a rearward tilted position, the output frequency of the transmission 31 is decreased.

[0034] When the cutting / threshing lever 23 is in the forward tilted position, the cutting clutch 32 and the threshing clutch 33 are disengaged, and the cutting device 3 and the threshing device 4 are stopped. When the cutting / threshing lever 23 is in the rearward tilted position, the cutting clutch 32 and the threshing clutch 33 are engaged, and the cutting device 3 and the threshing device 4 are driven. When the cutting / threshing lever 23 is in the neutral position, the cutting clutch 32 is disengaged and the threshing clutch 33 is engaged, so the cutting device 3 is stopped and the threshing device 4 is driven.

[0035] When the discharge lever 24 is in the forward tilted position, the discharge clutch 34 is released and the discharge auger 8 stops, and when the discharge lever 24 is in the rearward tilted position, the discharge clutch 34 is connected and the discharge auger 8 operates.

[0036] A switch panel 25 on which switches for turning on the illumination lights and the like are arranged is provided in front of the main shift lever 21, and a human presence sensor 26 such as an infrared sensor for detecting an operator sitting in the cockpit 10 is provided on the left front part of the switch panel 25. This makes it possible to detect whether or not an operator is sitting in the cockpit 5 in cooperation with the pressure sensor 10S.

[0037] In a plan view, the irradiation direction of the human sensor 26 is set from the human sensor 26 toward the center in the left-right direction of the backrest of the cockpit 10. This makes it possible to prevent erroneous detection of an operator who stands up from the cockpit 10 and attempts to get off the cockpit 5. In addition, in a side view, the irradiation direction of the human sensor 26 is set from the human sensor 26 toward the upper part in the up-down direction of the backrest of the cockpit 10. This makes it possible to prevent erroneous detection of the backrest of the cockpit 10, which is warmed by the body heat of the operator, as the operator. Note that the dashed lines in Figs. 3 and 4 indicate the irradiation direction of the human sensor 26.

[0038] In a plan view, the left part of the switch panel 25 and the right part of the front panel 11 extend rightward from the left part of the switch panel 25, then curve forward to the right, and a handle 27 is provided, extending further to the right.

[0039] <Other placement configurations of human presence sensors> 5 and 6, another arrangement method of the human presence sensor 26 will be described. Note that the same members as those in the arrangement form described above are given the same reference numerals and the description thereof will be omitted.

[0040] The human sensor 26 is provided on the right wall of the side panel 20. In a plan view, the irradiation direction of the human sensor 26 is set from the human sensor 26 toward the legs of the operator sitting in the cockpit 10. This makes it possible to prevent erroneous detection of an operator who stands up from the cockpit 10 and attempts to get off from the control unit 5. In addition, in a side view, the irradiation direction of the human sensor 26 is set from the human sensor 26 toward the area between the knee and ankle of the leg of the operator sitting in the cockpit 10. This makes it possible to further prevent erroneous detection of an operator who stands up from the cockpit 10 and attempts to get off from the control unit 5. Note that the dashed line in FIG. 5 indicates the irradiation direction of the human sensor 26.

[0041] 7, the output rotation of the engine E is transmitted to the continuously variable transmission 30 provided on the transmission path A1. The output rotation of the engine E transmitted to the input shaft of the continuously variable transmission 30 is accelerated or decelerated and the rotation direction is switched within the continuously variable transmission 30, and then transmitted to the transmission 31 and the harvesting device 3.

[0042] The output rotation of the continuously variable transmission 30 transmitted to the input shaft of the transmission 31 is accelerated or decelerated by multiple gears in the transmission 31 and then transmitted to the traveling device 2. In addition, a mowing clutch 32 is provided between the output shaft of the continuously variable transmission 30 and the input shaft of the mowing device 3.

[0043] The output rotation of the engine E is transmitted to the threshing device 4 provided on the transmission path A2. In addition, a threshing clutch 33 is provided between the output shaft of the engine E and the input shaft of the threshing device 4.

[0044] The output rotation of the engine E is transmitted to the discharge auger 8 provided on the transmission path A3. In addition, a discharge clutch 34 is provided between the output shaft of the engine E and the input shaft of the discharge auger 8.

[0045] As shown in Figure 8, the combine controller 40 is made up of a processing unit 41 consisting of a CPU etc., a memory unit 42 consisting of a ROM, RAM, a hard disk drive, flash memory etc., and a communication unit 43 for data communication with the outside.

[0046] The processing unit 41 drives the continuously variable transmission operating unit 30A of the continuously variable transmission 30 and the like based on the measured values ​​of the pressure sensor 10S attached to the cockpit 10 and the human presence sensor 26 provided on the switch panel 25.

[0047] The memory unit 42 stores the measured values ​​of the angle sensor 21S attached to the main shift lever 21 and the like.

[0048] The communication unit 43 transmits and receives measurement values ​​of the angle sensor 21S attached to the main shift lever 21 and other data between a remote controller (not shown) and the main shift lever 21 via a communication antenna.

[0049] The input side of the controller 40 is connected via a predetermined input interface circuit to a pressure sensor 10S mounted in the cockpit 10, a pressure sensor 14S mounted on the floor 14, an angle sensor 21S mounted on the main shift lever 21, an angle sensor 23S mounted on the mowing / removal lever 23, an angle sensor 24S mounted on the discharge lever 24, and a human presence sensor 26 provided on the switch panel 25.

[0050] The output side of the controller 40 is connected via a specified output interface circuit to a continuously variable transmission operating unit 30A that rotates the trunnion shaft of the continuously variable transmission 30, a harvesting clutch operating unit 32A that connects and disconnects the harvesting clutch 32, a threshing clutch operating unit 33A that connects and disconnects the threshing clutch 33, and a discharge clutch operating unit 34A that connects and disconnects the discharge clutch 34.

[0051] <Operation methods for harvesting equipment, threshing equipment, etc.> 9, in step S1, the processing unit 41 of the controller 40 determines whether or not the pressure sensor 10S attached to the cockpit 10 has detected an operator. If the pressure sensor 10S detects an operator and the input signal input from the pressure sensor 10S to the controller 40 is ON, the process proceeds to step S2, and if the pressure sensor 10S does not detect an operator and the input signal input from the pressure sensor 10S to the controller 40 is OFF, the process proceeds to step S4.

[0052] In step S2, the processing unit 41 determines whether or not the pressure sensor 14S attached to the floor 14 has detected a worker. If the pressure sensor 14S detects a worker and the input signal input from the pressure sensor 14S to the controller 40 is ON, the process proceeds to step S3, and if the pressure sensor 14S does not detect a worker and the input signal input from the pressure sensor 10S to the controller 40 is OFF, the process proceeds to step S4.

[0053] In step S3, the processing unit 41 determines whether or not the human presence sensor 26 attached to the right front part of the switch panel 25 has detected an operator. If the human presence sensor 26 detects an operator and the input signal input from the human presence sensor 26 to the controller 40 is ON, the process returns to step S1, and if the human presence sensor 26 does not detect an operator and the input signal input from the human presence sensor 26 to the controller 40 is OFF, the process proceeds to step S4.

[0054] In step S4, the processing unit 41 judges whether the angle sensor 21S attached to the main speed change lever 21 measures the neutral position. If the angle sensor 21S measures a forward tilt position or a rearward tilt position, that is, the output rotation of the continuously variable transmission 30 is being output and the traveling device 2 is moving forward or backward, the process proceeds to step S5, and if the angle sensor 21S measures a neutral position, that is, the output rotation of the continuously variable transmission 30 is not being output and the traveling device 2 is stopped, the process proceeds to step S6.

[0055] In step S5, the processing unit 41 drives the continuously variable transmission operation unit 30A that rotates the trunnion shaft of the continuously variable transmission 30 to put the output rotation of the continuously variable transmission 30 in a state where it is not output, and then proceeds to step S6. As a result, when the worker gets off the control unit 5, the traveling device 2 can be automatically stopped, thereby improving the safety of the work environment.

[0056] In step S6, the processing unit 41 determines whether the angle sensor 23S attached to the mowing / threshing lever 23 measures the front tilted attitude. If the angle sensor 23S measures the neutral attitude, i.e., the threshing device 4 is operating, or if the angle sensor 23S measures the rear tilted attitude, i.e., the mowing device 3 and the threshing device 4 are operating, the process proceeds to step S7, and if the angle sensor 23S measures the front tilted attitude, i.e., the mowing device 3 and the threshing device 4 are stopped, the process proceeds to step S8.

[0057] In step S7, the processing unit 41 drives the threshing clutch operating unit 33A, which connects and disconnects the threshing clutch 33, to disconnect the threshing clutch 33, or drives the reaping clutch operating unit 32A, which connects and disconnects the reaping clutch 32, and the threshing clutch operating unit 33A, which connects and disconnects the threshing clutch 33, to disconnect the reaping clutch 32 and the threshing clutch 33, and proceeds to step S8. As a result, when the operator gets off the control unit 5, the operation of the reaping device 3 and the threshing device 4 can be automatically stopped, further improving the safety of the working environment.

[0058] In step S8, the processing unit 41 determines whether or not the angle sensor 24S attached to the discharge lever 24 measures the front tilt posture. If the angle sensor 23S measures the rear tilt posture, that is, if the discharge auger 8 is driven, the process proceeds to step S9, and if the angle sensor 24S measures the front tilt posture, that is, if the discharge auger 8 is stopped, the process returns to step S1.

[0059] In step S9, the processing unit 41 drives the discharge clutch operating unit 34A, which connects and disconnects the discharge clutch 34, to disconnect the discharge clutch 34, and returns to step S1. As a result, when the worker gets off the control unit 5, the drive of the discharge auger 8 is automatically stopped, making it possible to further improve the safety of the work environment.

[0060] <Cabin> 10, an intake port 50 for taking in air is provided on the front wall of the cabin 9. This allows outside air to be taken into the cockpit 5 covered by the cabin 9, improving the living space of the cockpit 5.

[0061] 11, a dust cover 51 is provided in front of the suction port 50 to cover the suction port 50, and a predetermined gap 52 is formed between the front wall of the cabin 9 and the rear surface of the outer periphery of the dust cover 51. This makes it possible to prevent excessive intrusion of dust such as straw chips into the control section 5 through the suction port 50. Reference numeral 53 denotes a door that the operator opens and closes, and reference numeral 54 denotes a stair-like step that the operator uses when getting on and off. [Explanation of symbols]

[0062] 1 Aircraft frame 2 Running gear 3 Reaping device 4. Threshing Equipment 5. Control Unit 7. Glentank 8. Discharge Auger 10. Cockpit 10S Pressure Sensor 11 Front Panel 20 Side Panel 26 Human Sensor 30 Continuously variable transmission 32 Harvesting clutch 33 Threshing Clutch 34 Discharge clutch E-Engine

Claims

1. A combine harvester comprising: a traveling device (2) for traveling in a field provided below a machine frame (1) on which an engine (E) is mounted; a reaping device (3) for harvesting stalks provided in front of the machine frame (1); a threshing device (4) for threshing and sorting the stalks provided on the rear left side of the reaping device (3); a steering section (5) provided on the rear right side of the reaping device (3); a grain tank (7) for storing sorted grain provided behind the steering section (5); and a discharge auger (8) for discharging the stored grain to the outside provided behind the grain tank (7), a pressure sensor (10S) is attached to a cockpit (10) of the control section (5) to detect a pressure applied to the cockpit (10) by an operator riding in the control section (5); A front panel (11) is provided in front of the cockpit (10); A side panel (20) is provided on the left side of the cockpit (10), A human presence sensor (26) for detecting an operator who is on the control section (5) is disposed on the right wall of the side panel (20); A combine harvester characterized in that, in a plan view, the irradiation direction of the human presence sensor (26) is directed to the right and the human presence sensor (26) passes in front of the front part of the driver's seat (10).

2. A combine harvester as described in claim 1, wherein when the pressure sensor (10S) or the human presence sensor (26) does not detect an operator riding in the control section (5), the output rotation of the continuously variable transmission (30) which increases or decreases the output rotation of the engine (E) and transmits it to the running device (2) is stopped.

3. A combine harvester as described in claim 2, wherein, when the pressure sensor (10S) or the human presence sensor (26) does not detect an operator riding in the control unit (5), the harvesting clutch (32) that transmits the output rotation of the engine (E) to the harvesting device (3) and the threshing clutch (33) that transmits the output rotation of the engine (E) to the threshing device (4) are disconnected.

4. A combine harvester as described in claim 3, wherein when the pressure sensor (10S) or the human presence sensor (26) does not detect an operator riding on the control section (5), the discharge clutch (34) which transmits the output rotation of the engine (E) to the discharge auger (8) is disconnected.

Images