JPH06343335A - Feed-chain controlling apparatus of combine harvester - Google Patents

Abstract

PURPOSE:To enable effective driving of a combine harvester and improve the threshing performance by controlling the speed of a feed chain of a threshing part of a combine harvester in a state synchronized with the reaping speed. CONSTITUTION:Power is transmitted from a traveling transmission part 4 for driving a traveling part 3 and having a main speed change gear 1 and a subsidiary speed change gear 2 to a feed chain 5 of a reaping part A or a threshing part B to be driven by the power. In a combine harvester having the above construction, the subsidiary speed change gear 2 is provided with a subsidiary speed change sensor 6 to detect the preset speed of the gear and an infinitely variable gear 7 is placed in the transmission path between the traveling transmission part 4 and the feed chain 5. The subsidiary speed change sunsor 6 detects the state of the subsidiary speed change gear and the infinitely variable gear 7 is controlled based on the detection result.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine feed chain control device capable of effectively driving a feed chain of a threshing section by controlling the speed so as to synchronize with the cutting speed.

[0002]

2. Description of the Related Art Conventionally, a main chain transmission such as an HST or an auxiliary transmission has been provided to enable transmission to a feed chain of a mowing section or a threshing section which is a transmission lower side of a traveling transmission section for driving a traveling section. It is known that the speed of the feed chain can be adjusted according to the mowing speed and the like in the combine constructed as described above.

[0003]

However, it is difficult to make an appropriate adjustment manually, and if the feed chain is too fast with respect to the mowing speed, it is difficult to make an appropriate adjustment. If the feed chain is too slow due to turbulence or a large amount of culm breakage, the grain culm layer becomes thick, resulting in poor sorting and loss of horsepower, resulting in poor threshing performance. When the feed chain is configured to interlock on the lower transmission side of the section, when the traveling speed becomes fast, the speed of the feed chain becomes too fast, which causes the above-mentioned inconvenience. .

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and provides a feed chain which can be automatically and properly adjusted.
The auxiliary transmission of the traveling transmission unit is equipped with an auxiliary transmission sensor that can detect the shift position, and a continuously variable transmission is provided in the transmission path between the traveling transmission and the feed chain.
The auxiliary shift sensor is configured to detect the position of the auxiliary shift and control the continuously variable transmission based on the detected position.

[0005]

Accordingly, when the cutting speed is changed by changing the speed of the auxiliary transmission to low, standard or high speed, the auxiliary transmission sensor detects the shift position of the auxiliary transmission and controls the continuously variable transmission based on this. Therefore, it is possible to control the feed chain so that the speed of the feed chain is synchronized with the low, standard, and high cutting speeds, and to prevent the feed chain speed from rising above a certain level. Therefore, the feed chain can be effectively driven while being controlled so as not to be too early or too late.

[0006]

FIG. 2 is a plan view of the combine, and FIG. 3 is a side view of the combine. Equipped with a threshing section B equipped with
A mowing section A equipped with each raising case 10, each sward plate 11, a transport device 12, etc. is provided, and a driver's cab 15 having a control column 13 and a seat 14 on the front and rear on the right side of the mowing section A.
An engine 16 installed on the rear of the cab 15
A grain tank 18 having a discharge auger cylinder 17 is installed in the rear of the above, and is constructed in the same manner as the conventional structure.

A traveling transmission unit 4 having an HST 1, a clutch device 19, an auxiliary transmission device 2 and the like is provided at a lower rear portion of the reaping unit A, and the traveling transmission unit 4 causes both drive wheels 3a of the traveling unit 3 to move. 3a can be driven, the input shaft 20 of the traveling transmission unit 4 and the engine 16 are transmission-coupled via a pulley belt 21, and the output shaft 22 of the traveling transmission unit 4 and an intermediate transmission shaft 23 are connected to the pulley belt. The intermediate transmission shaft 23 and one side of the intermediate transmission shaft 23 are transmission-coupled via a pulley belt 27 having a clutch pulley 26.
The other side of the feed chain 5 and the drive sprocket 5a of the feed chain 5 are connected to each other via a pulley belt 28, and the straw chain 8 is attached to the end of the feed chain 5.
Is connected by power transmission, and is driven by a continuously variable transmission motor 29 at a portion of the intermediate transmission shaft 23 in a transmission path between the traveling transmission unit 4 and the feed chain 5, for example, a ring cone type continuously variable transmission device. 7, the continuously variable transmission 7 may be a belt type or a hydraulic type, or the upper and lower limit positions of the actuator may be detected by a limit switch to control the continuously variable transmission actuator. It may be configured so that the operation is stopped or an alarm is issued at that time.

The sub-transmission device 2 is provided with a sub-transmission sensor 6 capable of detecting low-speed, standard and high-speed shift positions, and the traveling section 3 is provided with a vehicle speed sensor 30.
As shown in FIG. 3, the detection signals from both sensors 6 and 30 are input to the controller CPU so that the continuously variable transmission 7 can be controlled while operating the motor 29 as described later. The intervening clutch drive actuator 31 and the hand switch 32 can be controlled by the controller CPU as shown in FIG. 4, and if the HST 1 is not driven at a certain speed or more, the transmission lower feed chain 5 rotates. However, since it is not preferable to travel during manual handling, when the manual handling switch 32 is pressed, the clutch device 19 is actuated to cut off the traveling transmission and the motor 29 is driven to feed the vehicle. The chain 5 is configured to be driven at a constant speed that is lower than its upper speed limit.

In addition, a long hole 3 in the front-rear direction is provided at the center of the upper surface of the left and right sward plates 11, 11 which are the frontmost parts of the cutting section A.
2 are formed respectively, and the lower portion of the supporting rod 33 is fitted and inserted into the elongated hole 32, and the lower end bending portion 33a of the supporting rod 33 is attached to the supporting piece 34 through the tightening nut 35 so as to be rotatable and fixed. A lower part of the front end of a C-shaped loop rod 36 is rotatably and fixedly attached to the upper end of the rod 33 through a bolt nut 37 and a chrysanthemum, and as shown in FIG. 2, FIG. 3, FIG. 7 and FIG. If the rod 36 is tilted forward and the supporting rod 33 is erected, the tip of the left and right sward plates 11 can be seen well by the operator in the driver's seat during mowing or splitting. By the rod 36, weeding on the uncut side and the already cut side can be effectively performed, and as shown in FIG. 11, the support rod 33 and the loop rod 36 are raised to approach the front side of the case 10. If it is rotated, it can be effectively stored.

Therefore, the auxiliary transmission 2 is set to a low speed, standard,
When the cutting speed is changed by changing the cutting speed at a high speed, the auxiliary shift sensor 6 detects the position of the auxiliary shift and the controller CPU controls the continuously variable transmission device 7, so that the traveling speed increases. Feed chain 5
The vehicle speed sensor 30 reads the current sub-shift position while the sub-shift sensor 6 reads the current sub-shift position while increasing the speed of the sub-speed sensor 30 as shown by the lines A, A, and C in FIG. The vehicle speed is detected and compared with the corresponding comparison values a, b, and c, and if these values are exceeded, as shown in the flowchart of FIG. Since the transmission 7 is decelerated, it is possible to prevent the speed of the feed chain 5 from increasing more than the constant speed indicated by d, and the feed chain 5 is moved too early or too late in synchronization with the cutting speed. It is possible to drive effectively while controlling so that nothing happens.

[0011]

As described above, according to the present invention, when the auxiliary transmission 2 is operated at low speed, standard speed and high speed to change the cutting speed, the auxiliary transmission sensor 6 detects the shift position of the auxiliary transmission 2. Based on this, the continuously variable transmission position 7 can be controlled, so that the speed of the feed chain 5 is synchronized with the low, standard, and high cutting speeds, and the speed of the feed chain 5 is not less than a certain level. Therefore, it is possible to control the feed chain 5 so that the feed chain 5 is not too fast or too slow in synchronization with the cutting speed. It has a feature that can be suitably implemented.

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing a main part of an embodiment of the present invention.

FIG. 2 is a plan view showing the entire combine.

FIG. 3 is a side view showing the entire combine.

FIG. 4 is a control circuit diagram showing a main part.

FIG. 5 is an explanatory diagram shown in a graph.

FIG. 6 is a flowchart showing an operating state of a main part.

FIG. 7 is a side view showing a part of FIG. 3 in an enlarged manner.

FIG. 8 is a plan view showing a part of FIG.

FIG. 9 is a plan view showing a part of FIG.

10 is a front sectional view showing a part of FIG. 7. FIG.

FIG. 11 is a side view showing the operating state of FIG. 7.

[Explanation of symbols]

 1 HST (main transmission) 2 auxiliary transmission 3 traveling part 4 traveling transmission part A reaping part B threshing part 5 feed chain 6 auxiliary transmission sensor 7 continuously variable transmission

Claims (1)

[Claims] 1. A feed chain 5 of a mowing section A and a threshing section B, which is a transmission lower side of a traveling transmission section 4 having a main transmission apparatus 1 and an auxiliary transmission apparatus 2 for driving a traveling section 3 so as to be transmitted. In the combine configured as described above, the auxiliary transmission device 2 is provided with an auxiliary transmission sensor 6 capable of detecting the shift position, and is continuously variable in the transmission path between the traveling transmission unit 4 and the feed chain 5. A feed chain control device characterized in that a mechanism for interposing a speed change device 7 and for controlling the stepless speed change device 7 based on the position of the auxiliary speed change sensor 6 detected by the auxiliary speed change sensor 6 is provided. .