JP2541447Y2 - Combine - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a combine that scrapes a stalk with a reel, cuts it with a cutting blade, and threshes.

"Prior art" Conventionally, as shown in Japanese Utility Model Application Laid-Open No. 55-172040, a technique in which the rotation of a reel is changed so that the rotation speed of the reel is reduced faster and lower by changing the vertical position in the range of action of the reel for scraping grain. There is.

"Issues to be solved by the invention" The prior art can properly raise the falling grain culm by a fast-rotating reel,
Compared to normal upright grain culm, cutting at lower position to prevent uncut leaves increases the amount of grain culm thrown into threshing unit, easily overloading, threshing performance in threshing unit and sorting performance There is a problem such as lowering. In addition, the operator can manually reduce the vehicle speed to avoid overload work, but the operator can forget the deceleration operation and perform the overload work, or the deceleration operation is performed improperly and the deceleration amount is insufficient. There are problems such as overloading, excessive speed reduction, and a decrease in work efficiency.

"Means for solving the problem" In this invention, however, the grain stalks raked by the reels for raising and lowering the grain stalks are cut by a cutting blade, and the cut culms are thrown into a threshing unit to thresh. A combiner provided with a vehicle speed control mechanism for automatically controlling the vehicle speed in accordance with a change in work load, a reel position sensor for detecting a height of the culm scraping operation of the reel is provided, and a culm scraping operation of the reel is provided. When the height is equal to or less than the setting, the vehicle speed control of the vehicle speed control mechanism is stopped to automatically perform the vehicle speed deceleration operation, and when the grain stem scraping work height of the reel returns to the setting or more, With a controller that automatically restarts the vehicle speed control of the vehicle speed control mechanism, when cutting the lodging grain culm with the reel culm scraping work height of the reel below the setting, stopping the vehicle speed control Vehicle speed Therefore, it is possible to prevent the amount of cereal stalks that are thrown into the threshing unit from increasing even if the lodging culms are cut so as to prevent uncut leaves, and to prevent the workload from being overloaded. Maintaining threshing performance, etc. can be easily achieved, and when shifting to normal upright cereal stalk harvesting, vehicle speed control is resumed, so it is easy to improve handling operability and prevent reduction in work efficiency. What you get.

A reel speed change mechanism for changing a rotation speed of the reel for scraping the grain, configured to increase the rotation speed of the reel when the vehicle speed control is stopped based on a detection value of the reel position sensor. Thus, when the vehicle speed control is automatically stopped, the rotation of the reels is also automatically increased, so that forgetting and erroneous operations can be prevented, and the raising of the grain stalk can be performed properly.

Embodiment An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a control circuit diagram according to the present invention, FIG. 2 is an overall side view of the combine, and FIG. 3 is a plan view of the combine, wherein (1) shows a traveling crawler (2) on a track frame (3). A machine to be equipped; (4) a threshing unit equipped with an axial-flow type screw-type handling cylinder (5) for inclining forward and backward and high and a sorting mechanism (6) and mounted on the machine (1); 7) is a grain tank for storing the grains of the threshing unit (4) to be taken out via the first-stage conveyor (8), and (9) is capable of moving up and down through the lifting cylinder (10) in front of the threshing unit (4). The mowing unit to be installed, (11) is a driver's cab in which a driver's seat and a driving operation unit are installed on a cab (12), (13) is an engine disposed on the left side of the driver's cab (11),
(14) is a grain discharge conveyor for taking out the grains in the grain tank (7).

The cutting unit (9) includes a platform (15) for taking uncut grain culm, and a feeder house connected to substantially the center of the rear part of the platform (15) to feed the cut grain culm to the threshing unit (4). (16), a weeding board (17), a reel for grain cultivation (18), and a reciprocating drive type cutting blade (1
The platform (15) is provided with a cutting grain auger (20) and a cut grain culm auger (20), and a grain culm supply chain conveyor (15) is provided inside the feeder house (16) for cutting grain culms to be taken into the platform (15). It is configured to be fed to the threshing unit (4) via 21) for threshing.

As shown in FIG. 4, the cutting section (9) supports the rear end side of the feeder house (16) to the machine side so as to be able to move up and down.
Horizontal frame (22) above the front end of the feeder house (16)
The base ends of the left and right reel support arms (24) are rotatably supported up and down via the rotation fulcrum shaft (23) of the auger (2).
0) A hydraulic cylinder (26) for lifting and lowering the reel is interposed between the left and right outer plates (25) and the left and right support arms (24), and the cylinder (26) is used to appropriately adjust the support height of the reel (18). It is provided to adjust. A potentiometer-type reel position sensor (27) for detecting a change in the support height of the reel (18) based on a change in the support angle of the arm (24).
And a reel rotation sensor (28) for detecting a rotation speed of the reel (18).

As shown in the drive system diagram of FIG. 5, the engine (13)
The transmission (29) is linked to the output shaft (13a) of the
A constant-discharge hydraulic motor (30) of a traveling hydraulic continuously variable transmission mechanism for controlling vehicle speed in the traveling crawler (2) is connected to a drive sprocket (2a) of each of the left and right crawlers (2), and the motor ( 30) A variable displacement left and right hydraulic pump (31) for supplying hydraulic pressure to the final output shaft (29a) of the transmission (29) is operatively connected to adjust the hydraulic discharge amount of the pump (31). The rotation of the traveling crawler (2), that is, the vehicle speed is controlled.

A counter shaft (35) is interlockedly connected to an intermediate output shaft (29b) of the transmission (29) via pulleys (32) and (33) and a belt (34). Clutch (36) and mowing speed control motor (37)
The reaping input shaft (40) is interlockingly connected via a continuously variable pulley (38a) (38b) and a belt (39) of a belt continuously variable transmission mechanism which is operated to change the speed, and the chain is connected to the input shaft (40). The drive sprocket (41) of the conveyor (21) is linked and connected.

Further, the input shaft (40) is connected to a sprocket (42) (43).
The mowing counter shaft (45) is interlocked and connected via a chain (44) and the auger shaft (20) of the scraping auger (20).
a) through a sprocket (46) (47) and a chain (48), and a drive input shaft (49) of the cutting blade (19) through a pulley (50) (51) and a belt (52). It is linked to the reaper counter shaft (45). Further, the reel drive shaft (18a) of the scraping reel (18) is operatively connected to the reaper counter shaft (45) via first and second reel counter shafts (53) and (54). The continuously variable transmission pulleys (56) and (57) and the belt (58) of the belt continuously variable transmission mechanism that is operated by the reel rotation control motor (55) are interposed between the counter shafts (45) and (53). At the same time, a sprocket (59) (60) and a chain (61) are provided between the first and second reel counter shafts (53) and (54), and between the second reel counter shaft (54) and the reel drive shaft (18a). The sprockets (62) and (63) and the chain (64) are interposed, and the reel (18) is linked to the cutting counter shaft (45) so as to be capable of shifting.

Furthermore, a variable displacement hydraulic pump (65) of a hydraulic cylinder type continuously variable transmission mechanism for controlling rotation of the cylinder (5) is connected to the output shaft (29a) in an interlocking manner. A constant discharge hydraulic motor (66) for supplying hydraulic pressure to the drive case (67) of the cylinder (5), and a threshing load sensor (68) for detecting rotation of the cylinder, The handle cylinder (5) is rotatably rotated with the hydraulic pressure from (65), and when the rotation of the handle cylinder (5) changes to a high or low speed with a change in the threshing load, this is detected by the sensor ( 68) It is configured to detect with this.

A threshing input shaft (69) is connected to the counter shaft (35) via a pulley (70) (71), a belt (72), and a threshing clutch (73), which is a belt tension pulley. 4) The swinging sorter (74), the first and second conveyors (75) (76), the Karamin (77), and the pre-fan (Auxiliary fan of the Karamin (77)) of the sorting mechanism (6) provided in the 78)-While the first and second grain conveyors (8) and (79) are connected to the threshing input shaft (69) via respective belt transmission mechanisms (80) to drive them, The counter shaft (35) is interlocked via a belt transmission mechanism (82) to a tank drive input shaft (81a) that drives each drive mechanism (81) such as a grain discharge conveyor (14) of the grain tank (7). It is configured to perform the driving.

As shown in FIG. 1, a vehicle speed control mechanism (31a) which is a discharge amount control mechanism of the hydraulic pump (31), a cutting speed control motor (37), and a reel rotation control motor (55) are output-connected to each other. It includes a control circuit (83) for appropriately driving and detects an automatic / manual switch (84) for switching between automatic and manual, the threshing load sensor (68), and the vehicle speed of the crawler (2). A vehicle speed sensor (85), a grain stalk sensor (86) for detecting a transported grain stalk taken into the feeder house (16), and the reel position sensor (27)
A reel throttling sensor (28), a threshing load setting device (87) for setting a reference threshing load of the handling cylinder (5), and a reel position setting device for setting an appropriate scraping position of the reel (18). (88) and the control circuit (83) are input-connected to control the vehicle speed and the rotation of the reel (18) based on the detection of each sensor (27) (28) (68) (85) (86). It is configured to do so.

As is clear from the above, the grain stalks squeezed by the vertically removable grain stalk raking reel (18) are cut by the cutting blade (19), and the cut stalks are thrown into the threshing unit (4). In a combine that provides a vehicle speed control mechanism (31a) that performs threshing and automatically controls the vehicle speed according to changes in the workload,
A reel position sensor (27) for detecting a height of the reel (18) for scraping the grain stem;
When the working height of the grain stalk is below the setting, the vehicle speed control of the vehicle speed control mechanism (31a) is stopped to automatically perform the vehicle speed reduction operation, and the grain stalk scraping of the reel (18) is performed. A control circuit (83), which is a controller for automatically restarting the vehicle speed control of the vehicle speed control mechanism (31a) when the working height returns to the set value or more, is provided. When harvesting the lodging culm with the height below the setting, the car speed control is stopped, the vehicle speed is reduced, and even if the lodging culm is harvested so as to prevent the uncut, it is thrown into the threshing unit (4). In addition to preventing an increase in the amount of cereal culm, the work load is prevented from being overloaded, threshing performance is maintained, etc. It will be resumed to improve handling operability and prevent reduction in work efficiency. Reel for scraping grain stalks (18)
A reel rotation control motor (55), which is a reel transmission mechanism for shifting the rotation speed of the reel (1), when the vehicle speed control is stopped based on the detection value of the reel position sensor (27).
8) Increase the rotation speed, and when the vehicle speed control is automatically stopped, the rotation of the reels is also increased automatically to prevent forgetting and erroneous operation and to raise the grain stem properly. Make up.

This embodiment is configured as described above.
This operation will be described with reference to the flowchart of FIG.

During the vehicle speed control, the vehicle speed is controlled to be low or high based on a comparison between a reference set value set by the setting device (87) and a detection value of the threshing load sensor (68). When the threshing load exceeds the set range, the vehicle speed is controlled to return to the set range and the threshing load is kept constant.

As a result of such vehicle speed control, when the vehicle speed is changed, the harvesting speed, that is, the rotation speed of the reel (18) is controlled in synchronization therewith, and the rotation of the reel (18) is reduced to the vehicle speed. Keep in sync.

During such control, the combine machine enters the area where the grain stalk is lying down, and the cylinder (26) is operated to lower the reel (18) to an appropriate fall-down and scraping position. A sensor (86) detects when the culm is being scraped,
When the sensor (27) detects the following from the set position of the reel (18), the vehicle speed control is stopped and at the same time the vehicle speed is reduced to a constant low speed, while the reel (18) is synchronized with this reduced vehicle speed. The speed is increased to the lodging speed which is the speed of the lodging mode which is higher than the rotation speed, that is, the rotation speed ratio of the reel (18) to the vehicle speed is usually constant, but the reel (18)
Is smaller than the set position, the ratio of the rotation speed of the reel (18) to the vehicle speed is made large (in this case also lower than the normal rotation speed of the reel), and the vehicle speed and the rotation of the reel (18) Perform the work in a state where is properly adapted.

When the sensor (27) detects that the reel (18) has entered the normal nap area and raised the reel (18) again to the normal specified height position, the vehicle speed control is restored, and
The rotation of the reel (18) is synchronized with the vehicle speed.

In this way, by detecting the height position of the reel (18), it is possible to determine whether the grain stalk is lodged or in a normal napped state, and automatically control the vehicle speed and the rotation speed of the reel (18) to the optimum values. All the operations are performed, and the operation and operability can be improved without the need for complicated operations each time.

"Effects of the Invention" As is apparent from the above embodiments, the present invention is characterized in that a grain stalk raked by a stalk-raising reel (18) that can be lifted and lowered is cut by a cutting blade (19), and a grain stalk cut and cut. Into the threshing unit (4) to thresh and combine the vehicle with a vehicle speed control mechanism (31a) for automatically controlling the vehicle speed according to the change in the work load. A reel position sensor (27) for detecting is provided, and when the work height for scraping the culm of the reel (18) is equal to or less than a set value, the vehicle speed control of the vehicle speed control mechanism (31a) is stopped to reduce the vehicle speed. Automatically performed and said reel (18)
A controller (83) for automatically restarting the vehicle speed control of the vehicle speed control mechanism (31a) when the grain stalk scraping work height of the reel (18) has returned to a value higher than a set value. When harvesting the lodging grain culm with the culm raking work height below the setting, the vehicle speed control is stopped and the vehicle speed is reduced, so even if the lodging grain culling is cut so as to prevent uncut leaves, the threshing section ( 4) It is possible to prevent an increase in the amount of grain culm thrown in to prevent the work load from being overloaded, to easily maintain threshing performance, and to cut a normal standing grain culm. When the operation shifts to the operation, the vehicle speed control is restarted, so that it is possible to easily improve handling operability and prevent a decrease in work efficiency.

Further, a reel speed change mechanism (55) for changing the rotation speed of the reel for grain pulling (18) is provided, and a reel position sensor (2) is provided.
7) When the vehicle speed control is stopped based on the detected value of 7), the rotation speed of the reel (18) is increased, and when the vehicle speed control is automatically stopped, the rotation of the reel is automatically performed. Since the speed is increased, forgetting and erroneous operations can be prevented, and the raising of the cereal stem can be properly performed.

[Brief description of the drawings]

1 is a control circuit diagram, FIG. 2 is an overall side view of the combine, FIG. 3 is a plan view of the same, FIG.
FIG. 5 is an explanatory diagram of the drive system, and FIG. 6 is a flowchart. (4) Threshing unit (18) Reel (19) Cutting blade (27) Reel position sensor (55) Reel rotation control motor (reel transmission mechanism) (31a) Vehicle speed control circuit (83) Control circuit (controller)

Claims (2)

(57) [Scope of request for utility model registration] 1. A grain stalk raked by a stalk-raising reel (18) which can be raised and lowered freely is cut by a cutting blade (19), and the cut stalk is thrown into a threshing unit (4) for threshing. At the same time, in a combine provided with a vehicle speed control mechanism (31a) for automatically controlling the vehicle speed according to a change in the workload, the reel (1
8) A reel position sensor (27) for detecting a grain stalk scraping work height of 8) and the vehicle speed control mechanism (31a) when the grain stalk scraping work height of the reel (18) is equal to or less than a setting.
The vehicle speed control mechanism (31a) stops the vehicle speed control by automatically stopping the vehicle speed control of the vehicle speed control operation, and when the working height of the reel (18) for scraping the cereal stem returns to a predetermined value or more. A combine characterized by having a controller (83) for automatically resuming control. 2. A reel transmission mechanism (55) for changing the rotation speed of a reel for grain-pulling (18), and a reel when a vehicle speed control is stopped based on a detection value of a reel position sensor (27). (18) The combine according to the above (1), wherein the rotational speed is increased.