JP2022034657A - combine - Google Patents

Abstract

To provide a combine capable of executing stable harvesting work with less costly and simpler configuration by detecting an increase in a load in harvesting work without using a more dedicated sensor, and automatically controlling the speed of a travelling machine body.SOLUTION: A combine includes: a travelling machine body; an engine; a reaping part provided on a front side of the travelling machine body for executing grain culm reaping work in a farm field; a thresher for subjecting the reaped grain culms reaped by the reaping part to threshing treatment and sorting treatment; a grain tank for storing grains subjected to the threshing treatment by the thresher; operation means for executing a speed change operation for a travelling speed changing device that executes travelling speed change; a yield sensor for detecting a yield flow rate, which is an amount of grains harvested per unit time; and a control part. The control part can execute vehicle speed control for controlling the speed of the travelling machine body so that the yield flow rate detected by the yield sensor falls within a range of a target yield set beforehand.SELECTED DRAWING: Figure 9

Description

The present invention relates to a combine provided with a control unit that controls a vehicle speed according to a harvest flow rate.

The traveling machine, the engine mounted on the traveling machine, the cutting section provided on the front side of the traveling machine to perform the harvesting work of the grain harvester in the field, and the threshing process of the harvested grain harvester cut by the harvesting section. A threshing device that performs threshing and sorting processing, a grain tank that stores the grains that have been threshed by the threshing device, a traveling speed changer that shifts traveling by shifting the power output from the engine, and a control unit. The control unit is configured to be able to execute vehicle speed control that automatically decelerates the vehicle speed of the traveling vehicle when it is detected that the load applied to the engine becomes higher than a predetermined value. The combine described in Document 1 is conventionally known.

According to the above document, when the threshing device is supplied with a threshing culm having a threshing performance or higher and an overload is applied during the cutting work and the threshing work of the threshing machine, the traveling machine Since the vehicle speed can be automatically reduced, more stable harvesting work can be performed, but the cost is high because a dedicated sensor for detecting the load applied to the threshing device needs to be separately provided. There was a problem of becoming expensive.

Japanese Unexamined Patent Publication No. 10-108529 Japanese Unexamined Patent Publication No. 10-1153667

The present invention detects that the load has increased during the harvesting work without using a more dedicated sensor, and automatically controls the vehicle speed of the traveling machine to perform a stable harvesting work with a lower cost and a simple configuration. The challenge is to provide a combine that can execute.

In order to solve the above problems, the traveling machine, the engine mounted on the traveling machine, the harvesting section provided on the front side of the traveling machine to perform the harvesting work of the grain in the field, and the harvesting section are used for harvesting. A threshing device that performs threshing and sorting processing of the harvested grain, a grain tank that stores the grains that have been threshed by the threshing device, an operating means for shifting the traveling speed changer, and a unit. A yield sensor for detecting a harvest flow rate, which is the amount of grains harvested per hour, and a control unit are provided. It is characterized in that the vehicle speed control for controlling the vehicle speed of the traveling machine so as to be within the range is feasibly configured.

Secondly, it is characterized by providing a setting means capable of setting and operating the target yield.

Thirdly, a vehicle speed sensor for detecting the vehicle speed of the traveling machine is provided, and the control unit executes the vehicle speed control when it is detected that the vehicle speed is equal to or higher than a preset predetermined vehicle speed. It is characterized by being configured.

Fourth, the grains that have been threshed and sorted by the threshing device are upwardly transported toward the upper side of the Glen tank, and the upwardly transported grains are ejected into the Glen tank by a rotary-driven ejector. The yield sensor is a load sensor provided at a position where it collides with grains ejected toward the grain tank at a predetermined cycle by the ejector, and the control unit is the load. When an abnormality is detected in the output cycle of the load detected by the sensor, the traveling machine is characterized in that it is configured to decelerate and control.

Fifth, a notification means for executing notification to the worker is provided, and the threshing device is provided with a chaff sheave capable of adjusting the sorting amount for selecting the processed product that has been threshed by adjusting the opening degree. The control unit has a swing sorter, and the difference between the harvest flow rate predicted from the opening degree of the chaff sheave and the harvest flow rate detected by the yield sensor is equal to or more than a preset predetermined value. When it is detected, it is characterized in that it is configured to execute the notification by the notification means.

Since the control unit is configured to execute the vehicle speed control using the yield sensor, the harvest flow rate is in an appropriate range without separately providing a sensor for detecting the load of the threshing work in the threshing device. Since the vehicle speed of the traveling machine can be automatically controlled so as to be maintained at the above level, more stable harvesting work can be performed with a low cost and a simple configuration.

Further, according to the one provided with the setting means capable of setting and operating the target yield, it is possible to set an appropriate target yield according to the conditions such as the harvested product and the state of the field, and thus the rotation of the engine. More stable harvesting work can be performed without reducing the number.

Further, a vehicle speed sensor for detecting the vehicle speed of the traveling machine is provided, and the control unit is configured to execute the vehicle speed control when it is detected that the vehicle speed is equal to or higher than a preset predetermined vehicle speed. According to the above, since the vehicle speed control is not executed immediately after the start of the harvesting work in which the yield is not stable, it is possible to efficiently prevent the situation where the vehicle speed is controlled at an unintended timing.

Further, the grain that has been de-grained and sorted by the grain-removing device is upwardly transported toward the upper side of the grain tank, and the upward-transported grain is ejected into the grain tank by a projecting body that is rotationally driven. The yield sensor is a load sensor provided at a position where it collides with grains ejected toward the grain tank at a predetermined cycle by the ejector, and the control unit is provided by the load sensor. When an abnormality is detected in the output cycle of the detected load, according to the one configured to control the deceleration of the traveling machine, the detection result of the load sensor normally provided is used to describe the above. Since the vehicle speed can be controlled, it is possible to efficiently prevent grain transport clogging with a low-cost configuration.

It should be noted that a notification means for executing notification to the operator is provided, and the threshing device is equipped with a chaf sheave capable of adjusting the sorting amount for selecting the processed product that has been threshed by adjusting the opening degree. The control unit has a sorter, and the difference between the harvest flow rate predicted from the opening degree of the chaff sheave and the harvest flow rate detected by the yield sensor is equal to or more than a preset predetermined value. When it is detected, according to the one configured to execute the notification by the notification means, the load applied to the threshing device, the transport device, etc. can be grasped more accurately by using the detection result of the yield sensor. can do.

It is a side view of the self-removing combine to which this invention is applied. It is a top view of the self-removing combine to which this invention is applied. It is a side view of the main part which showed the internal structure of a threshing apparatus. It is a cross-sectional view of a main part which showed the arrangement of a transport device. It is sectional drawing on the side of the main part which showed the input part. (A) is a plan view showing the loading section, and (B) is a plan view of the main section showing the configuration inside the loading section. (A) to (D) are a plan view, a bottom view, a side view, and a side sectional view showing a grain amount detection device. It is a block diagram of a control part. It is a figure which showed the display example of the touch panel. It is a flow chart which showed the vehicle speed control.

1 and 2 are side views and plan views of a head-feeding combine to which the present invention is applied, FIG. 3 is a side view of a main part showing the internal structure of a threshing device, and FIG. 4 is a transport device. It is a cross-sectional view of a main part showing the arrangement of. The illustrated combine includes a traveling machine body 2 supported by a pair of left and right crawler type traveling devices 1 and 1, which are traveling sections, and a cutting section 3 connected to the front of the traveling machine body 2 so as to be able to move up and down.

The cutting section 3 includes a raising device 4 for raising the grain culm in the field, a scraping device 6 for scraping the raised grain culm, and a cutting blade for cutting the grain culm scraped on the cutting section 3 side. The culm in the field that has been squeezed into the cutting section 3 side is cut, and the cut cut culm is transported backward toward the traveling machine 2 side by the grain culm transport device 7. do.

The grain culm transport device 7 can detect the transport amount of the harvested grain culm by detecting the swinging position of the arm that swings by abutting with the harvested grain culm being transported rearward. The sensor 10 is provided.

The traveling machine 2 is threshed from a cabin 11 provided with a control unit for an operator to steer, and a grain culm arranged diagonally to the left rear of the cabin 11 and cut by the cutting unit 3. A threshing device 12, a post-treatment unit 13 arranged behind the threshing device 12 to discharge straw debris after the threshing process, and a post-processing unit 13 arranged behind the cabin 11 and on the right side of the threshing device 12 for processing. A grain tank 14 in which the grain is stored and a discharge auger 16 in which the grain stored in the grain tank 14 are discharged to the outside of the machine are provided (see FIGS. 1 and 2 and the like).

Further, the traveling machine body 2 is provided with an engine and a traveling speed change device (not shown) that shifts the power transmitted from the engine and transmits the power to the crawler type traveling devices 1 and 1. At this time, the traveling transmission may be a stepless transmission such as HST or a device that mechanically shifts gears.

The traveling transmission is configured to be able to shift gears by a gear shifting actuator (operating means) 20 controlled via a control unit 50 described later. The operating means may be configured to directly control the shifting operation of the traveling transmission, or may indirectly control the shifting operation by operating the main shifting lever 19 described later operated by the operator.

The cabin 11 includes a seat 17 on which an operator sits, a multi-steering lever 18 arranged on the front right side of the seat 17 and capable of steering the traveling machine 2 and raising and lowering the cutting portion, and the seat. The main shift lever (shifting means) 19 arranged on the left side of the 17 and capable of performing a traveling speed change operation of the traveling machine by a forward / backward swing operation, and an operation panel 21 for operating various settings during work traveling. (See Fig. 2 etc.).

In front of the seat 17 in the cabin 11, in addition to the operation panel 21, various situations of the traveling machine 2 and various situations of the threshing device 12 can be monitored, and mode switching operations and setting operations can be performed. A touch panel type liquid crystal monitor (setting means) 22 that can be used is provided. In addition to the liquid crystal monitor 22 installed in the cabin 11, a touch panel type information terminal (not shown) may be provided.

The LCD monitor 22 and the operation panel 21 have a vehicle speed control execution switch 23 for switching to a vehicle speed automatic mode for automatically controlling the vehicle speed when cutting grain culms, and a target yield setting button (detailed later). A target yield setting dial (setting means) 24 and an upper limit vehicle speed setting button (upper limit vehicle speed setting dial) 26 are provided. As a result, the control unit 50 can execute vehicle speed control (vehicle speed automatic mode) that automatically controls the vehicle speed of the traveling machine body 2 according to the amount of grains harvested per unit time (harvest flow rate). It is configured in. The specific content of vehicle speed control will be described later.

The threshing device 12 includes a threshing unit 31 that performs a threshing operation of a harvested culm carried from the cutting unit 3 side, and a processed product that is arranged directly below the threshing unit 31 and has been threshed. A sorting unit 32 that sorts dust such as debris, a feed chain 33 that sandwiches the stock root side of the harvested grain culm delivered from the grain culm transport device 7 of the harvesting unit 3 and conveys it backward, and threshing. It is provided with a threshing transfer device 34 for rearwardly transporting the processed straw to the post-processing unit 13 side.

The threshing unit 31 includes a handling chamber 36 in which the threshing process is performed on the tip side of the harvested culm, a handling cylinder 37 that is rotationally driven around a rotation axis extending in the front-rear direction of the handling chamber 36, and a handling cylinder 37. It is provided with a receiving net 38 which is arranged below the handling cylinder 37 and is formed in an arc shape whose center is recessed in a front view along the shape of the handling cylinder.

Due to this configuration, the harvested culm thrown into the handling chamber 36 is handled (threshed) by the rotary-driven handling cylinder 36 to produce straw, and the straw is discharged from the handling chamber 36. It is discharged to the outside of the machine from the rear side of the post-processing unit 13. On the other hand, the processed product threshed by the handling cylinder 37 contains grains such as paddy and straw debris, and the processed product is received by the receiving net 38 and leaks downward. As a result, it is introduced to the sorting unit 32 side.

The sorting unit 32 has a swing sorting body 39 that swings and sorts the processed material leaked from the receiving net 38, and a sorting wind arranged on the front lower side of the swing sorting body 39 and toward the rear upper side. A wall insert fan 41 that blows air, a second sorting fan 42 that is arranged behind the wall insert fan 41 and discharges the dust after sorting to the outside of the machine, and a grain that is the first product sorted by the wall insert fan 41. The first racen 43 for collecting grains and the second racen 44 for collecting the second product are provided, and are configured to perform sorting work for the processed product that has been threshed.

The swing sorter 39 is composed of a Glenpan 46 arranged on the front side, a chaff sheave 47 arranged on the rear side and the rear lower side of the Glenpan 46, and a straw rack 48 arranged on the rear side of the chaff sheave 47. ing. Further, a Glen Sheave 45 is provided on the lower side of the Chaf Sheave 47 (see FIG. 3).

The chaff sheave 47 is composed of fins 47a arranged side by side in the front-rear direction, and the amount of processed material leaking below the chaff sheave 47 can be adjusted by adjusting the opening degree of the fins 47a. It is configured in. The opening degree of the fin 47a may be configured to be adjusted by a drive motor or the like, or may be configured to be manually adjustable.

Further, the chaff sheave 47 is provided with a fin opening degree detection sensor (fin opening degree detecting means) 49 which is a potentiometer or the like for detecting the opening degree of the fin 47a, and adjusts the sorting ability of the swing sorting body 3.・ It is configured so that it can be grasped.

Further, on the upper side of the chaff sheave 47, a layer thickness sensor 51 for detecting the amount of processed material on the chaff sheave 47 is provided. The layer thickness sensor 51 is, for example, a potentiometer for detecting the swing position of a swing arm supported so as to swing up and down according to the layer thickness of the processed object on the chaff sheave, and was detected by the potentiometer. It is configured to detect the amount of processed material on the chaff sheave 47 according to the swing position of the swing arm 51B (see FIG. 3 and the like).

As a result, the control unit 50 is based on the opening degree of the fin 47a detected by the fin opening degree detection sensor 49 and the layer thickness of the processed material on the chaff sheave 47 detected by the layer thickness sensor 51. , It is possible to predict the harvest flow rate (yield) indicating the yield of grains per unit time.

According to the configuration, the processed material that has been oscillated and sorted by the oscillating sorting body 39 and leaked from the chaff sheave 47 and the grain sheave 45 is hardly affected by the sorting wind blown by the wall insert fan 41. By falling slightly forward of the center of the sorting unit in the front-rear direction (No. 1 spiral 43), the sorting unit is sorted into the first item collected by the No. 1 spiral 43, and straw debris and the like are blown backward. In addition, the processed product with spikelets and branch stalks that did not leak from the chaf sheave 47 and the grain sheave 45 was collected as a second product by the second spiral 44 behind the first spiral 43, and was straw. The debris and the like are blown out of the machine from the post-processing unit 13 side by the sorting wind.

The second item collected by the second spiral 44 is conveyed to the right side in the left-right direction by the second spiral 44. The second object conveyed by the second spiral 44 is reduced and conveyed onto the swing sorter by a vertical reduction transfer device extending upward from the right end side of the second spiral 44. It is configured. As a result, the second item can be sorted again, so that more accurate sorting work can be performed.

The first product (grain) collected by the first spiral 43 is transported to the right side in the left-right direction by the first spiral 43. The first product transported by the first spiral 43 is the upper portion of the grain tank 14 by a vertical grain transport device (transport device) 52 extending upward from the right end side of the first spiral 43. It is configured to be transported upward toward the side and charged into the grain tank 14 via the charging unit 53 provided on the upper end side of the grain transporting device 52 (see FIG. 4 and the like).

The grain transport device 52 includes a transport shaft 54 extending upward from the lower end side of the first spiral 43, an upward transport spiral 56 formed around the transport shaft, and the upward transport spiral 56. It is composed of a transport case 57 extending in the vertical direction surrounding the spiral, and the loading section 53 is provided on the upper end side of the grain transport device 52 (see FIG. 5 and the like). The specific configuration of the charging unit 53 will be described below.

Next, the configuration of the charging section will be described with reference to FIGS. 5 to 7. 5A and 5B are cross-sectional views on the main part side showing the charging part, FIG. 6A is a plan view showing the charging part, and FIG. 6B is a main part showing the configuration inside the charging part. 7 (A) to 7 (D) are a plan view, a bottom view, a side view, and a side sectional view showing the grain amount detecting device.

The loading section 53 was upwardly transported by the grain transporting device 52 by rotationally driving the drive shaft 61 on the same axis extending upward from the transport shaft 54 and the drive shaft 61 as a shaft. It has a pop-out body 62 for throwing grains into the Glen tank 14, and a storage case 63 for accommodating the pop-out body 62 and being connected to the Glen tank 14 side, and the pop-out body 63 has the pop-out body 63. A grain amount detecting device 64 for detecting the amount of grains (harvest flow rate) put into the grain tank 14 by the body 62 by the impact force of the skipped grains is provided (see FIGS. 5 and 6 and the like). ).

The left and right inner (right) sides of the storage case 63 are formed so as to be in contact with an opening formed in a wide rectangular shape in the front-rear direction on the upper side of the Glen tank 14, and the left and right outer (left) sides are formed. The front side thereof is formed to be curved along the rotation locus of the projecting body 62 that is rotationally driven, and the rear side is directed toward the rear left, right, inside (right) side in a plan view toward the rear end of the opening on the Glen tank 14 side. It is extended diagonally. As a result, the storage case 63 is formed in a heart shape that is halved in a plan view.

The protruding body 62 is a plate-shaped member extending in the horizontal direction from the base end side fixed to the drive shaft 61 side, and is a vertical member extending in the vertical direction along the drive shaft 61. The upper portion 62a and the extending portion 62b extending substantially horizontally from the lower end side of the rising portion 62a toward the rotation direction of the drive shaft 61 are bent and formed in an L shape.

Further, the extended end side of the projecting body 62 is extended to a length slightly protruding from the opening toward the Glen tank 14 side (see FIG. 6B). Further, a washer member 66 inserted into the drive shaft is provided on the upper end side of the rising portion 62a (see FIG. 5).

According to the configuration, the ejecting body 62 is rotationally driven (counterclockwise in a plan view), and is upwardly transported to the upper end (loading portion) side of the grain transporting device 52 by the upward transporting spiral 56. The grains can be collected by scraping and can be ejected toward the rear of the storage case 63. The grains ejected backward by the ejecting body 62 are thrown into the Glen tank 14 through the opening.

The grain detection device 64 is arranged at a position where it collides with the grains ejected by the ejecting body 62, and is a load sensor (yield sensor, load sensor, load cell) for detecting the collision force of the ejected grains. ) 67 and a mounting case 68 for mounting the load sensor 67 on the inner peripheral side surface side of the middle portion in the front-rear direction of the housing case 63.

The mounting case 68 is connected to a mounting portion 71 that detachably mounts the grain detection device 64 on the outer surface side of the side surface of the storage case 63, and the load sensor 67 (and the load sensor) formed in a disk shape. A support portion 72 recessed so as to accommodate the transmission portion 70) is formed.

Along with this, on the side surface side of the loading portion 53 (accommodation case 63), a fixing hole 63a for detachably mounting and fixing the mounting case 68 and a state in which the load sensor 67 is exposed in the accommodating case 63. There is an installation hole 63b for arranging in (see FIGS. 5 to 7). Incidentally, the installation hole 63a is formed in a portion of the rear side surface of the storage case 63 that extends linearly toward the rear left, right, and inside.

The mounting portion 71 uses a fixing bolt 75A inserted into the fixing hole 63a and a fixing nut 75B for fixing the mounting case 68 to the accommodating case 68 side by the fixing bolt 75A, thereby making the mounting case 68. It can be attached and fixed to the storage case 63 side in a detachable configuration.

The support portion 72 is configured to be supported in a state where the detection surface of the load sensor 67 is exposed on the open end side thereof.

Further, the support portion 72 is formed with a notch portion 74 for passing a connection cord 73 that connects the load sensor 67 (transmission unit 70) and the power supply, the control unit 50, etc. on the traveling machine body 2 side. ing. In the illustrated example, the notch 74 is formed at a total of three locations on the left and right (front and back) side and lower side of the support portion, and the connection cord 73 is interposed via the notch 74 on one of the left and right sides. Is connected to the load sensor 67 side (see FIG. 7). According to this configuration, it is possible to prevent rainwater or the like from accumulating in the support portion 72 when it rains or the like.

According to the grain detection device 64 having the above configuration, the grains to be charged into the grain tank 14 at predetermined intervals by the rotation-driven ejector 62 are loaded in the charging section 53 (containment case 63). By colliding with the sensor 67 and detecting the impact force of the collided grains, the yield amount (harvest flow rate) of the grains per unit time can be detected.

Specifically, when the yield per unit time increases or decreases, the amount of grains that are upwardly transported to the input section 53 side also increases or decreases during one rotation of the ejector 62. As a result, the amount (weight) of the grains ejected toward the grain tank (load sensor) by the ejecting body 62 changes, so that the collision force (load) detected by the loading sensor 67 also increases or decreases. Thereby, the load sensor 67 can detect the harvest flow rate of the grain per unit time.

Incidentally, in the grain transport device 52, instead of the upward transport spiral 56 driven around the transport shaft 54, a bucket-shaped projecting body (not shown) for scooping grains from the first spiral 43 is installed in the vertical direction. A plurality of grains may be provided side by side on a conveyor and the grains may be charged into the grain tank 14 via the ejector.

Next, the vehicle speed control will be described with reference to FIGS. 8 to 10. FIG. 8 is a block diagram of the control unit. On the input side of the control unit 50, the vehicle speed control execution switch 23, the vehicle speed sensor (vehicle speed detection means) 81 for detecting the vehicle speed of the traveling machine, the grain sensor 10, the engine rotation speed, and the like are used. The engine load sensor 82 that detects the load applied to the engine, the yield sensor (load sensor) 67, the fin opening degree detecting means 48, the target yield setting operation tool 24, and the upper limit vehicle speed setting operation tool 26. , The layer thickness sensor 51 is connected.

On the other hand, on the output side of the control unit 50, a vehicle speed shifting actuator 20 including a shifting motor for controlling shifting of the traveling transmission, the liquid crystal monitor 22, and an alarm sound to the operator are generated. An alarm buzzer (notifying means) 83 is connected.

When the vehicle speed control execution switch 23 switches to the vehicle speed automatic mode, the control unit 50 uses the harvest flow rate detected by the grain detection device 64 (load sensor 67) as the target yield setting operation tool. If it is less than the target yield set by 24, the vehicle speed is gradually increased, and if the detected harvest flow rate is higher than the target yield, the vehicle speed is gradually reduced and detected. When the harvest flow rate is within the range of the target yield, the vehicle speed control is configured to maintain the vehicle speed and notify the operator of the control state of the vehicle speed.

According to the configuration, by controlling the vehicle speed according to the harvest flow rate, which is the yield of grains per unit time, the vehicle speed during work running can be controlled even if the operator has no skilled experience. It can be kept properly to prevent overloading of the engine and to prevent wasting threshing capacity.

At this time, the control unit 50 is configured so that the upper limit vehicle speed operating tool 26 can arbitrarily set and operate the upper limit of the vehicle speed when the vehicle speed is automatically controlled by the vehicle speed control. Further, the control unit 50 is configured so that the target yield value can be arbitrarily set and changed by the target yield setting operation tool 24.

Further, when the control unit 50 is switched to the vehicle speed automatic mode, the harvest flow rate detected by the grain detection device 64 is predicted by the fin opening degree detecting means 49 and the layer thickness sensor 51. If it is significantly lower than the harvest flow rate, it is configured to notify the operator to that effect.

FIG. 9 is a diagram showing a display example of the touch panel. As shown in the figure, the touch panel type LCD monitor 22 has the vehicle speed, the remaining fuel amount, the engine load status detected by the engine load sensor 82, the direction indicator, and the headlight ON in the left half portion thereof. A traveling information display unit 71 for displaying information on the traveling aircraft such as OFF is provided, and the amount of grains stored in the grain tank and the opening degree of the fins 47a constituting the chaff sheave 47 are set in the right half of the traveling information display unit 71. The grain removal information display unit 72 is provided to display information such as the working status of the grain removal device such as the strength of the sorting wind. In particular, the threshing information display unit 72 includes a harvest flow rate display unit 72a that displays the harvest flow rate detected by the grain detection device 64, and a vehicle speed controlled by the vehicle speed that controls the vehicle speed according to the harvest flow rate. A vehicle speed control display unit 72b for displaying the control status and an upper limit vehicle speed display unit 72c for displaying the upper limit vehicle speed set by the upper limit vehicle speed setting operation tool 26 are provided (see FIG. 9).

Further, the touch panel type monitor (setting means) is arranged with an input button by touch operation, and in addition to the display switching button for switching the information displayed on the monitor (see FIG. 9), the vehicle speed automatic mode is entered. Each operation can be executed by arranging a vehicle speed control execution button 23 for switching the vehicle speed, a target yield setting button 24 for setting the target yield, and an upper limit vehicle speed setting button 26 for setting the upper limit of the vehicle speed. It may be configured as.

FIG. 10 is a flow chart showing vehicle speed control. The control unit proceeds to step S1 when the flow diagram for vehicle speed control is started. In step S1, it is confirmed whether or not the vehicle speed control execution switch 23 has been switched to the vehicle speed automatic mode, and if the vehicle speed control execution switch has been switched to the vehicle speed automatic mode (vehicle speed control is being executed), the step is taken. Proceed to S2. If the vehicle speed automatic mode has not been switched in step S1, the vehicle returns after that.

In step S2, whether or not the vehicle speed detected by the vehicle speed detecting means is equal to or higher than the vehicle speed detected at the time when the vehicle speed automatic mode is switched (or the detected vehicle speed is a preset predetermined speed). If it is confirmed that the vehicle speed (working speed) is equal to or higher than the vehicle speed (predetermined vehicle speed set in advance) at the start of execution of the vehicle speed control, the detected vehicle speed (working speed) is confirmed. Proceed to step S3. If the detected vehicle speed in step S2 is slower than the vehicle speed at the start of execution of the vehicle speed control, the vehicle returns thereafter.

According to the configuration, if the vehicle speed during the cutting work is intentionally slowed immediately after the start of the cutting work of the grain culm, or during the turning work, the vehicle speed control is not executed. , The safety is improved.

In step S3, it is confirmed by the grain culm sensor 10 whether or not the harvested grain culm is being transported by the reaping unit 3, and the rearward transport of the cut culm by the grain culm transport device 7 is detected. If so, the process proceeds to step S4. If the rearward transport of the cut grain culm by the grain culm transport device 7 is not detected in step S3, the process returns thereafter.

In step S4, the engine load sensor 82 confirms whether or not an overload of a predetermined value or more is applied to the engine, and the amount of grain culms to be harvested and the amount of processed material to be threshed are determined. If it is not detected that the engine is overloaded more than a predetermined value due to an excessive amount or the like, the process proceeds to step S5.

In step S5, the charging cycle of the grains charged into the grain tank 14 from the charging section detected by the load sensor 67 is compared with the charging cycle stored in advance, and the process proceeds to step S6.

In step S6, whether or not the charging cycle of the grains charged into the grain tank 14 from the charging section detected by the load sensor 67 is within the normal range as compared with the charging cycle stored in advance. If no abnormality is found in the charging cycle of the grains charged into the grain tank, the process proceeds to step S7.

In step S7, the harvest flow rate detected by the load sensor 67 is equal to or higher than a predetermined value as compared with the predicted value (predicted yield) of the harvest yield predicted by the fin opening detection means 49 and the layer thickness sensor 51. It is confirmed whether or not it has become smaller, and the process proceeds to step S8.

In step S8, if it is detected that the harvest flow rate detected by the load sensor 67 is not smaller than a predetermined value as compared with the predicted yield and is within a normal range, the process proceeds to step S9. ..

In step S9, the target yield set by the target yield setting operation tool 24 and the harvest flow rate detected by the load sensor 67 are detected, and the process proceeds to step S10.

In step S10, if it is detected that the harvest flow rate detected by the load sensor 67 is within an appropriate range of the target yield set by the target yield setting operation tool 24, the process proceeds to step S11.

In step S11, the vehicle speed shifting actuator 20 maintains the vehicle speed (working running speed) and proceeds to step S12. In step S12, a notification means such as the alarm buzzer 83 and the monitor 22 is used to notify that the vehicle speed is maintained, and then the vehicle returns.

If it is detected in step S10 that the harvest flow rate detected by the load sensor 67 is less than the appropriate range of the target yield, the process proceeds to step S13.

In step S13, the vehicle speed shifting actuator 20 gradually increases the vehicle speed, and the process proceeds to step S14. In step S14, a notification means such as the alarm buzzer 83 and the monitor 22 is used to notify that the vehicle speed is increasing, and then the vehicle returns.

If it is detected in step S10 that the harvest flow rate detected by the load sensor 67 is larger than the appropriate range of the target yield, the process proceeds to step S15.

In step S15, the vehicle speed shifting actuator 20 gradually decelerates the vehicle speed and proceeds to step S16. In step S16, a notification means such as the alarm buzzer 83 and the monitor 22 is used to notify that the vehicle speed is decelerated, and then the vehicle returns.

If it is detected in step S8 that the harvest flow rate detected by the load sensor 67 is smaller than a predetermined value as compared with the predicted yield, the process proceeds to step S17.

In step S17, a notification means such as the alarm buzzer 83 or the monitor 22 is used to notify that most of the processed products to be threshed and sorted are lost in the threshing device 12, and then. , Return.

According to the configuration, the operator compares the predicted yield calculated based on the fin opening degree detecting means 49 in the threshing device 12 and the layer thickness sensor 51 with the predicted yield calculated based on the layer thickness sensor 51, and the operator uses the charging unit 53 to make the said. It was quickly detected that the amount of grains charged into the grain tank 14 was significantly small, in other words, an abnormality such as the processed product being sorted being scattered outside the machine in the threshing device 12 had occurred. can do.

Incidentally, in the above configuration, the predicted yield was calculated based on the fin opening degree detecting means 49 and the layer thickness sensor 51 in the threshing device 12, but the recovered second product was used as the rocking sorter. The reduction transport device for reduction transport to 39 is provided with a second product reduction amount sensor (not shown) for detecting the amount of the second product to be reduced and transported, and the amount of the second product to be reduced and transported and the load sensor 67. It may be configured to judge the presence or absence of an abnormality by comparing with the harvest flow rate detected by.

In step S6, when an abnormality is found in the charging cycle of the grains charged into the grain tank, and in step S4, when it is detected that the engine is overloaded more than a predetermined value. Goes to step S15.

In step S15, the vehicle speed shifting actuator 20 gradually decelerates the vehicle speed and proceeds to step S16. In step S16, a notification means such as the alarm buzzer 83 and the monitor 22 is used to notify that the vehicle speed is decelerated, and then the vehicle returns.

According to this configuration, the overload state of the engine can be detected and the vehicle speed can be automatically decelerated and controlled without determining the state of the threshing load from the engine sound or the sound during the threshing work. Even if the operator's skill level is not high, it is possible to efficiently prevent the grain from being excessively clogged in the threshing device 12 and the grain transport device 52.

2 Traveling machine 3 Cutting unit 12 Threshing device 14 Glen tank 20 Vehicle speed shifting actuator (speed shifting means)
24 Target yield setting button (setting means)
39 Swinging sorter 47 Chaf sheave 50 Control unit 52 Grain transfer device (transport device)
62 Popping body 67 Load sensor (yield sensor, load sensor)
81 Vehicle speed sensor 83 Alarm buzzer (notification means)

Claims (5)

With the traveling aircraft,
The engine mounted on the traveling machine and
A cutting section provided on the front side of the traveling machine for cutting grain culms in the field, and a cutting section.
A threshing device that performs threshing processing and sorting processing of the harvested culm cut by the cutting unit, and
A grain tank for storing threshed grains by the threshing device, and
An operating means for shifting the traveling transmission that performs traveling shifting, and
A yield sensor that detects the harvest flow rate, which is the amount of grains harvested per unit time,
Equipped with a control unit
The control unit is a combine capable of executing vehicle speed control that controls the vehicle speed of the traveling aircraft so that the harvest flow rate detected by the yield sensor falls within a preset target yield range. The combine according to claim 1, wherein a setting means capable of setting and operating the target yield is provided. A vehicle speed sensor for detecting the vehicle speed of the traveling aircraft is provided.
The combine according to claim 1 or 2, wherein the control unit is configured to execute the vehicle speed control when it is detected that the vehicle speed is equal to or higher than a preset predetermined vehicle speed. A transport device is provided in which the grains that have been threshed and sorted by the threshing device are upwardly transported toward the upper side of the Glen tank, and the grains that have been upwardly transported are ejected into the Glen tank by a pop-out body that is rotationally driven. ,
The yield sensor is a load sensor provided at a position where it collides with grains ejected toward the grain tank at a predetermined cycle by the ejector.
The combine according to any one of claims 1 to 3, wherein the control unit is configured to control deceleration of the traveling machine body when an abnormality is detected in the output cycle of the load detected by the load sensor. .. Provided a notification means to execute notification to the worker,
The threshing device has a swing sorter provided with a chaff sheave that can adjust the sorting amount for sorting the threshed processed material by adjusting the opening degree.
When the control unit detects that the difference between the harvest flow rate predicted from the opening degree of the chaf sheave and the harvest flow rate detected by the yield sensor is equal to or more than a preset predetermined value. , The combine according to any one of claims 1 to 4, which is configured to execute the notification by the notification means.

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