JPH01187026A - Speed controller for combine - Google Patents

Abstract

PURPOSE:To provide the title speed controller so designed that such a constitution that reaping-and-conveyance ratio increases in proportion to the change in combine speed at low level is selected to enable the reaping-and-conveyance speed in low-speed harvesting to be easily retained at levels higher than the minimum speed necessary for reaping-and-conveyance even if the reaping-and-conveyance speed is set based on the combine speed in the averaging harvesting. CONSTITUTION:In a speed controller for combine designed to change reaping-and- conveyance speed based on the combine speed, the reaping-and-conveyance ratio, i.e., a ratio of the reaping-and-conveyance speed to the combine speed is so constituted as to increase in proportion to the change in the combine speed at low level. Namely, in contrast to the conventional relationship between the combine speed x and the reaping-and-conveyance speed y represented by directly proportional linear one (y=x) as shown in the figure with a hypothetical straight line, this relationship is replaced by a straight line (y=ax+b) given by a real line with smaller inclination; whereas for the reaping-and-conveyance ratio z, i.e., a ratio of the reaping-and-conveyance speed y to the combine speed x (y/x), the conventional constant value (z=a) shown as a hypothetical straight line is replaced by a curve of secondary degree [z=(a/x<2>)+b] given by a real line. Thus, the cases of reaped straws' falling down or dropping will significantly be reduced or prevented during the low-speed harvesting is carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is directed to speed control of a combine harvester, which is moved by the drive of running rollers and performs harvesting work by reaping culms in a reaping section and threshing kernels in a threshing section. Regarding equipment.

``Prior Art'' Conventionally, there has been a technique for performing harvesting work by detecting the vehicle speed of a combine harvester and automatically changing the reaping conveyance speed in synchronization with the change in vehicle speed.

``Problems to be Solved by the Invention'' In the prior art, the reaping conveyance speed was changed in direct proportion to the vehicle speed in a ratio of l to l. During low-speed harvesting work, the reaping conveyance speed becomes abnormally slow, lower than the minimum speed required for reaping conveyance, and the conveying posture of the reaped husk culm in the reaping section is disturbed, causing problems such as the reaped husk culm being pulled down and falling off. There were functional problems such as easy occurrence.

``Means for Solving the Problems'' However, the present invention provides a combine harvester speed control device that changes the reaping conveyance speed based on the vehicle speed, in which the reaping conveyance ratio, which is the ratio of the reaping conveyance speed to the vehicle speed, is controlled by a slow change in vehicle speed. It is characterized by being configured so that the size increases in proportion to.

``Function'' Therefore, even if the reaping transport speed is set based on the average vehicle speed for harvesting work, the reaping transport speed during low-speed harvesting work can be easily maintained at a level higher than the minimum speed required for reaping transport, and It is possible to easily prevent the conveying posture of the reaped husk culm from being disturbed by low-speed harvesting work, and it is possible to easily improve the reaping speed change function by preventing the reaped husk culm from being pulled down and falling off compared to conventional methods. It is.

"Example" Embodiments of the present invention will be described in detail below based on the drawings.

Figure 91 is a control circuit diagram, Figure 2 is a side view of the combine harvester, and Figure 3 is a plan view of the same.
), (3) is a machine platform to be installed on the truck frame (1), (4) is a foot chain (5) stretched on the left side, and a handling cylinder (6) and a processing cylinder (7). )
(8) is a reaping unit equipped with a cutting blade and a culm conveying mechanism, (9) is a straw processing unit that faces the end of the straw removal checker 7 (10), (!l) is a A driver's cab equipped with a driver's seat (12) and a driving operation part (13), (10 is an engine room in which an engine (14a) is installed, (15) is a threshing part (a grain tank for storing grains from 0) , and is configured to perform continuous reaping and threshing operations.

Further, in the figure (1B) is a lifting and steering operation lever for lifting and lowering the reaping part (8) and steering operation by controlling the left and right side clutches, and (17) is a travel main shift lever.

(18) is the sub-shift lever, and (19) is the reaping latch lever.

(20) is a threshing clutch lever.

Furthermore, as shown in FIGS. 4 and 5, a transmission shaft (22) is pivotally supported on the support shaft (3a) of the machine base (3) via a bearing body (2), and the driving force of the engine (14a) is A reaping drive pulley (23) for transmission is provided on the transmission shaft (22), and
The reaping input shaft (2) is connected to the reaping drive case (20) of the reaping unit (8).
5). And a pair of split pulleys (28) (
27) and a bell) (28), etc., the split pulleys (2111) and (27) are provided on the transmission shaft (22) and the reaping input shaft (25), respectively, and the transmission A continuously variable speed cam (30) is provided on the split pulley (2B) of the shaft (22).

In addition, as shown in FIGS. 6 and 7, the operation section (13)
A reaping variable speed motor (32), which is a speed changing operation member, is provided inside the box (31) inside the machine, and a sector gear (34) that is always engaged with the output gear (33) of the motor (32) is pivotally supported, and the speed changing The fan-shaped gear (30) is interlocked and connected to the continuously variable transmission cam (30) via the rod (35) (3B), the transmission arm (37) (38), and the transmission shaft (39), and the motor (32) ) to control the operation of the continuously variable speed cam (30) via the sector gear (30, etc.), change the effective diameter of the split pulley (2B), and change the output rotation speed by the belt (28). Reaping part (8)
The reaping and conveying speed is configured to be continuously variable.

Further, the gear (30) is interlocked with the sector gear (34).
A potentiometer-type reaping speed sensor (40) is provided to detect the rotation angle of the motor (32), and the sensor (40) is configured to detect the reaping speed position of the motor (32).

Furthermore, as shown in FIG. 1, a potentiometer-type main shift sensor (41) works in conjunction with the main shift lever (17) to detect the main shift position, and a potentiometer-type main shift sensor (41) works in conjunction with the sub-shift lever (18) to detect the sub-shift position. Switch type sub-shift sensor (42
), a pickup type engine rotation sensor (43) that detects the rotation speed of the engine (14a), and a running roller (
2) Pick-up type vehicle speed sensor (4) that detects the rotation speed of
0, and a pick-up type reaping speed sensor (45) that detects the driving speed of the cutting blade of the reaping section (8) and the transport mechanism.

It is equipped with a reaping conveyance speed control circuit (48) constituted by a microcomputer, and includes each of the sensors (40) to (4).
5) to its control circuit (4B), and
A switch (47) that detects that the oil pressure of the engine (14a) has risen to an appropriate pressure, a switch (48) that detects that the battery charging action of the engine (14a) is being performed appropriately, and and threshing clutch lever (1
9) Equipped with switches (49) (50) that detect clutch engagement operation in conjunction with (20), each switch (47) to
(50) is connected to the control circuit (4B).

In addition, the reaping variable speed motor (32) is output connected to the control circuit (46) via the speed increase circuit (51) and the deceleration circuit (52), and the speed is determined based on the vehicle speed detected by each sensor (41) (42). operating and controlling the reaping variable speed motor (32);
It is configured to change the reaping conveyance speed of the reaping section (8).

Then, as shown in Figure 8, the vehicle speed (reaping conveyance speed (y)
The conventional direct proportional -formula line (y
=x), the linear straight line (
y=ax+b).

As shown in Fig. 9, the reaping transport ratio (z), which is the ratio (y + (z=a/x
2 + b), as shown by the solid line, and the harvesting conveyance ratio (z) increases in proportion to the slow change in vehicle speed, and the average harvesting vehicle speed (x = xo) is the standard. Even if the reaping conveyance speed (y) is set as , the reaping conveyance speed (y) during low-speed harvesting work is equal to or higher than the minimum speed required for reaping conveyance (reaping speed when main gear is in neutral = reaping speed at sub-shift L speed) It is configured so that it is maintained.

Furthermore, in FIG. 1, each sensor (43) to (45) and each switch (47) to (50)
It detects the rotation of a) and the drive of the threshing part (4) and the reaping part (8), and the control port * (4B) determines whether the driving speed of the reaping part (8) is higher than the setting. The variable speed reaping motor (32) is enabled to operate only when the reaping section (8) is being driven, and the motor (32) is configured to perform control operations.

Also, manual switches for speed increase and deceleration (53) (54)
is connected to the control circuit (4B), and similarly to the automatic control operation based on the output of the sensors (41) and (42) that detect the vehicle speed, also in manual control of the manual switches (53) and (54), the reaping part (8) The variable speed reaping motor (32) can be operated only when the reaping variable speed motor (32) is being driven.

It also includes a select switch (55) for setting a reference value for the reaping conveyance speed of the reaping section (8) that is changed by the reaping variable speed motor (32), and the switch (55) is connected to the control port (48). The structure is such that the cutting and conveying speed of the cutting section (8) can be selected steplessly depending on the crop conditions and the like.

This embodiment is configured as described above, and the engine (14a
), reaping and threshing cracker, chiller (19)
When (20) is turned on and moved around the field for harvesting work, the presence or absence of rotation is detected by the engine rotation sensor (43) as shown in Fig. 11, and the oil pressure and charging action of the engine (14a) are detected. In addition, the ON operation of each of the levers (19) and (20) is detected by each switch (47) to (50), the movement of the combine harvester is confirmed by a vehicle speed sensor (44), and the movement of the combine harvester is confirmed by a reaping speed sensor (45). The control circuit (4) confirms that the operation of the reaping section (8) is confirmed and that the reaping speed change that changes the drive speed of the reaping section (8) is possible.
Judgment is based on B).

Vehicle speed is calculated by inputting the main shift position from the main shift sensor (41) and the auxiliary shift position from the auxiliary shift sensor (42), and the reaping shift position is input from the reaping shift sensor (40). , as shown in Figure 1θ, the reaping conveyance speed is calculated based on the vehicle speed, and the sub-shift is at low speed (Ll
, L2. L3. L4) and high speed (Hl, H2, H
3, H4) and the main shift (forward 1.2.3.4), the pulling speed is calculated, and the control circuit (4B) in which this data is stored in advance speeds up or The reaping variable speed motor (32) rotates forward or reverse in response to the output of the deceleration signal, and controls the operation of the reaping variable speed mechanism (28) via the sector gear (30 and continuously variable speed cam (30), etc.) to adjust the reaping conveyance speed relative to the vehicle speed. The harvesting work is carried out while changing the harvesting process in conjunction with the harvesting process.

``Effects of the Invention'' As is clear from the above embodiments, the present invention provides a combine harvester speed control device that changes the reaping conveyance speed based on the vehicle speed, in which the reaping conveyance ratio, which is the ratio of the reaping conveyance speed to the vehicle speed, is lower than the vehicle speed. It is configured so that the speed increases in proportion to the change, so even if the reaping transport speed is set based on the average harvesting vehicle speed, the reaping transport speed during low-speed harvesting will not exceed the minimum speed required for reaping transport. It is easy to maintain the conveyance position of the cut culm in the reaping part (8) due to low-speed harvesting work, and it is easy to prevent the cut culm from being pulled down or falling off compared to the conventional method. This has the effect that it is possible to easily improve the performance.

[Brief explanation of the drawing]

Fig. 1 is a control circuit diagram showing one embodiment of the present invention, Fig. 2 is a side view of the combine harvester, Fig. 3 is a plan view thereof, Figs. 4 and 5 are explanatory diagrams of the transmission mechanism, Fig. 6 7 is an explanatory diagram of the gear shift operation member, Figures 8 and 9 are gear shift output diagrams, and
0 is a lifting conveyance output diagram, and FIG. 11 is a flowchart. 9'°・ , , , , : 1

Claims (1)

[Claims] A speed control device for a combine that changes the reaping conveyance speed based on vehicle speed, characterized in that the reaping conveyance ratio, which is the ratio of the reaping conveyance speed to the vehicle speed, increases in proportion to a slow change in vehicle speed. speed control device.