JPH0753049B2 - Combine harvesting control device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester control device.

Conventional technology The horizontal sensor detects the left and right inclination of the combine,
Rolling control of the mowing device with respect to the vehicle body keeps it horizontal.

Problems to be Solved by the Invention When the combine harvester is inclined to the left and right, the cutting heights of the grain stems on the left and right sides of the harvester are different,
The mowing device is controlled to roll with respect to the vehicle body and held in a horizontal posture parallel to the soil surface.However, this rolling control is usually necessary when the soil is soft, and in this case, the combine is tilted to the left or right. Along with this, the grass frame or the like on the inclined side of the tip of the mowing device easily rushes into the soil surface. Before the mowing device is placed in a horizontal position by the rolling control, a part of the weeding frame or the like has already plunged into the soil surface, which delays the control.

Means for Solving the Problems The present invention is directed to a rolling control device 4 for controlling the cutting width direction of a cutting device 2 for cutting a grain culm from a root part to keep the cutting width direction horizontal, and the cutting control according to this rolling control. The harvesting control device of the combine is provided with a cutting height control device 3 that raises the device over the ground by an appropriate amount.

Effect of the Invention In the combine work, the mowing device (2) is maintained at a predetermined mowing height position by the mowing height control device (3) to perform mowing. When the soil surface has irregularities, changes in hardness or softness, or when the cutting height is changed, the cutting height is controlled by raising and lowering the cutting device 2 to the ground. Further, when the vehicle body (1) tilts in the left-right direction due to the softness of the soil surface, the cutting device (2) also tilts in the same direction. The rolling control device (4) works by tilting the harvesting device (2) to the left and right, and the harvesting device 2 is rolled to the side opposite to the tilting direction.
Control the mowing device (2) in a horizontal position. Since the cutting device (2) is raised by the cutting height control device (3) by an appropriate amount in accordance with such rolling control, the cutting device (2) is immediately tilted to the left and right together with the vehicle body (1). Since the cutting height becomes high, the cutting device (2) part such as the weeding frame is rarely projected on the soil surface or carried.

EFFECTS OF THE INVENTION When rolling control of the mowing device (2) is performed in this manner, the mowing device 2 is raised by an appropriate amount over the ground.
Since the position on the descending end side of the vehicle body (1) and the mowing device (2) is tilted to the left and right is maintained as high as possible for rolling control, and the mowing device (2) is horizontally controlled. It is possible to perform smooth cutting by reducing the rush of) into the soil.

Embodiment In the illustrated example, the combine has a threshing device (51), a control device (12), a cutting device (2), and a grain culm transfer device (on a vehicle body (1) of a crawler type traveling device (11) ( 14) etc. are provided, and the grain culms harvested by the harvesting device (2) are transferred to the transfer device (1
It is transferred in 4) and supplied to the rear threshing device (51) for threshing treatment.

A transmission case (15) is provided at the front end of the vehicle body (1) to transmit power from the prime mover to the traveling device (11), each part of the mowing device (2), and the transfer device (14). The interior is equipped with a mechanism.

At the upper end of the transmission case (15), an upper end portion of the reaping transmission frame (13) is provided so as to be vertically rotatable around a lateral shaft (16), and a nipping and transferring device for nipping and transferring the grain stems. (1
7), and an upper end portion of a transfer device (14) including a tip guide device (18) for engaging and guiding the side parts of the nipping transfer grain stems with lugs, and the upper end portion of the transfer device (14) is provided so as to be vertically rotatable. The rotation of the shaft (16) causes the transmission shaft in the reaping power transmission frame (13) to rotate, and at the same time, the endless body parts such as the sandwiching transfer device (17) and the tip guide device (18) to rotate. I am configuring.

The reaping device (2) comprises a reaper frame (7) whose main component is a transmission case, and a flexible tube (19) which is flexible with a lower end portion of the reaper frame (13) in a lateral center thereof. A transmission cylinder portion (20) to be connected is provided, and the transmission shaft in the transmission cylinder portion (20) and the transmission shaft in the transmission frame (13) are transmission-rotated via a universal joint and a retractable spline joint. So that each part of the reaping device (2) can be driven to rotate or forward.

Connecting arms (21) from the left and right ends of the mower frame (7)
Is projected forward, a cutting blade device (39) in the form of a hair clipper is provided at the front end, and a weeding frame (2) provided with a weeding plate (22) at the front end.
3) etc. are integrally connected. Grain culm raising device (5)
The lug (24) for raising is provided on the chain that is stretched to the front slope, and the culm is engaged and raised by the cutting blade device (3
9) Install diagonally from the front to the top. On the rear side of the grain culm raising device (5), a grain culm collecting and feeding device (6) is provided on the cutting blade device (39) in the front and back. A star wheel (25) that scrapes the root part of the raised grain culm backward from the rear side of each grain culm raising device (5).
Is provided close to the cutting blade device (39), and a collecting chain (26) for collecting the cutting culms is provided from above the star wheel (25) to the upper part on the rear side. Foil (2
On the upper side of 5), a belt with a lug (27) that is inclined toward the lower part of the grain culm raising device (5) is stretched, and the root portion of the raised grain culm is rotated by the rotation of the star wheel (25). It is configured to guide you to the area. Further, above the collecting chain (26), there is provided a lug-equipped chain (28) for engaging and guiding the tip end side of the grain culms collected by the collecting chain (26).

Regarding the lifting device, a turning arm (30) is pivotally supported at the front ends of the left and right supporting arms (29) projecting from the front end of the vehicle body (1) so as to be vertically rotatable, and the tip ends of the respective turning arms (30). Is
A shaft part (33) at one end of a pair of crank arms (32) having a left and right integrally formed crank arm, which are connected to each other by a connecting member (31) whose middle portion is curved downward, is pivotally attached to the crank arm (32). Arms (36) fixed to the left and right end portions of the lateral member (35) fixed to the reaper transmission frame (13) are pivotally attached to the shaft portion (34) at the other end of the above (32), and the left and right rotating parts are rotated. Moving arm (3
0) is integrally connected to a lateral member (37), and a lifting cylinder (3) that can be expanded and contracted by hydraulic pressure interposed between the horizontal member (37) and the vehicle body (1).
By connecting the piston part of 8) and expanding and contracting the lifting cylinder (38) by the cutting height control device (3), the angle of refraction between the rotating arm (30) and the crank arm (32) is expanded or contracted, and the cutting transmission is performed. The structure is such that the mechanism (13) is moved up and down.

The reaper frame (7) has a rolling member (1) wider than the lateral width of the transmission cylinder (20) on the rear side of the transmission cylinder (20).
(0) is fixed, and on the rear side of the reaping transmission frame (13), a side gate-shaped member (4
0) is fixed and both rolling members (10) and members (4
0) with the rolling member (10) and the member (40) at the left and right protruding portions, the collecting chain (26) near the grain culm collecting and feeding path side,
A front and rear horizontal rolling shaft (8) is provided, and the rolling member (10) and the reaper frame (7) integrated with the rolling member (10) are tilted left and right around the rolling shaft (8), that is, The structure is such that it can be rolled, the upper end of the rolling member (10) is fitted inside the gate of the member (40), and bolts are inserted through the pivot holes provided between the both (40) and (10). The nut is screwed from one end to prevent the nut from coming off. The rolling member (10) has a plate-like shape and is provided along the inclination direction of the reaper transmission frame (13). A guide mechanism (9) is provided on the side of the reaping power transmission frame (13) opposite to the rolling shaft (8). A bolt (41) integral with the rolling member (10) is fitted into the member (40) to provide an arc-shaped elongated hole (42) along the rotation locus around the rolling shaft (8).
This guides the rotation of the rolling member (10).
The bolt (41) may be tightened so that the rolling position can be manually fixed, or may be simply rotated and guided so that the bolt (41) cannot be tightened and fixed in a form in which rolling or rolling control is possible.

The mounting member (50) is integrally mounted with a fastener such as a bolt so that the upper side of the rolling member (10) straddles the upper side of the transmission cylinder (20) to the upper side of the flexible cylinder (19) in the left-right direction. The mounting member (50) extends along the rear side of the grain culm transfer path. The pick-up chain (26) is a star wheel (2
5) The grain culm collecting and feeding device (6) is configured with the chain with rug (28), etc., but the grain culm is provided as a pair of left and right components, and the rear end portion is approached from the left and right in the grain culm transfer route portion, Of the stock control unit (50), and one end of the control unit (12) side of the collection chain (26) has a terminal end portion provided on the attachment member (50). It is wound by 49) (52), etc., and the terminal end of the collecting chain (26) is stretched over the upper side of the transmission cylinder (20) toward the transfer device (14) near the threshing device (51). ing. The tensioning wheel (52) at this end is located near the rolling shaft (8). Further, the terminal portion of the collecting and collecting chain (26) on the other side is stretched so as to be along the front side of the terminal end of the collecting and collecting chain (26) wound by the tensioning wheel (52). The end portions of the pair of left and right collecting chains (26) are located below the starting end side of the transfer device (14), and a series of grain culm transfer paths leading to the culm transfer device (53) of the threshing device (51). Are configured.

Guide rods (43) project upward from the left and right sides of the reaper frame (7) facing the shaft portion (34) of the crank arm (32), and the guide rods (43) are provided behind the guide rods (43). Has guide grooves (45) with stoppers (44) at the upper and lower ends.
The shaft portion (34) is fitted to 5), and the rolling of the reaper frame (7) over a certain range can be locked by the stopper (44).

An extendable rolling cylinder (46) is connected between a part of the reaper frame (7) and the shaft portion (34) of the left or right crank arm (32). ), The reaper frame (7) is rotated about the rolling shaft (8) by expansion and contraction by hydraulic pressure.

The rolling control device (4) is provided with a horizontal sensor (47) in a part of the mowing device (2), and the horizontal sensor (47) detects the horizontal inclination of the mowing device (2) to detect the rolling cylinder. The hydraulic circuit of (46) is expanded and contracted so as to extend and contract so that the reaper (2) is maintained in a horizontal state. The cutting height control device (3) uses a cutting height sensor provided on the grass frame to switch the hydraulic circuit to raise and lower the cylinder (3).
8) is expanded and contracted to control the mowing device (2) up and down to the set height.

As shown in FIG. 7, the interlocking structure of the cutting height control device (3), the rolling control device (4), etc., is used in the hydraulic circuit (54) from the hydraulic pump (P) to connect with the lifting cylinder (38). A check valve (A), an ascending valve (B) opened by a solenoid, a throttle valve (H), a descending valve (C), etc. are provided between them, and when the ascending valve (B) is opened, a lifting cylinder ( The piston of (38) is pushed out to raise the cutting device (2), and is lowered by opening the lowering valve (C). Further, between the hydraulic pump (P) and the rolling cylinder (46), a traveling valve (D) for operating a pair of left and right traveling clutches of the traveling device (11) and a rolling valve (E) are provided. Strike valve (D)
Communicates with a pair of left and right strike clutches, and left and right strike cylinders (48) for operating the strike brakes after the strike clutch is disengaged, and the left and right strike clutches or brakes are operated by switching the strike valves (D). It is a composition. The rolling valve (E) is connected to the oil drain side of the strike valve (D), and the rolling valve (E) is connected.
The switch is used to apply hydraulic pressure in the reciprocating direction to rotate the reaper frame (7) around the rolling shaft (8). (F) is an unload valve that normally opens and discharges the hydraulic pressure of the hydraulic pump (P), and any one of the ascending valve (B), the strike valve (D), or the rolling valve (E) is activated. Cylinders corresponding to hydraulic pressure (38), (48),
When it is switched to send to (46), at the same time, the unload valve (F) is closed by a solenoid to raise the hydraulic pressure of the hydraulic circuit (54). (G) is a relief valve. (K) is an unload valve, which is normally open, and when the rolling valve (E) is switched, it is linked with this by an electromagnetic mechanism, and the oil pressure is weaker than the oil pressure of the running cylinder (46) of the running clutch. The rolling cylinder (46) can be expanded and contracted with.

The ascending valve (B), the descending valve (C), and the strike valve (D) are interlocked with the operating lever (55) of the control device, and the operating lever (55) is tilted to the left and right to turn left and right. In order to operate the strike clutch and strike brake of the, the strike valve (D) is switched and linked, and this operation lever (5
The descending valve (C) and the ascending valve (B) are interlocked with each other in order to lower and raise the mowing device (2) by tilting and turning 5) back and forth.

The rolling valve (E) is associated with the horizontal sensor (47), and the rolling valve (E) is switched depending on the inclination direction of the horizontal sensor (47), the reaper frame (7), and the horizontal sensor (47). The hydraulic pressure is changed to the horizontal posture. Between the horizontal sensor (47) and the rising valve (B), the horizontal sensor (47) detects an inclination equal to or more than a certain value, and the rolling valve (E) is switched to operate simultaneously with the rising valve (B). ) Is also opened for an appropriate time to extend the lifting cylinder (38). The extension amount of the lift cylinder (38) may be proportional to the extension amount of the rolling cylinder (46).

During the combine operation, the traveling device (11) is submerged in soft soil and tilts to the left or right (Fig. 5).
Similarly, the reaper (2) is also tilted, the horizontal sensor (47) detects this, and the rolling valve (E) is switched to the hydraulic circuit (54) on one side of the rolling cylinder (46).
Is sent to rotate the reaper frame (7) around the rolling shaft (8) and the reaper (39) becomes horizontal (FIG. 6). When the horizontal sensor (47) also becomes horizontal at the same time, the rolling control ends, and the harvesting device (2) maintains the horizontal state even when the traveling device (11) travels in an inclined state. Simultaneously with this rolling control, the lift valve (B) is opened to send hydraulic pressure to the lift cylinder (38), and this piston is pushed out to rotate the rotating arm (30) to the upper side and form an angle with the crank arm (32). Open and rotate the reaper transmission frame (13) around the shaft (16) to raise the reaper (2) to an appropriate amount. Therefore, since the mowing device (2) is quickly raised by the rolling and ascending to become horizontal, the mowing device (2) is rarely advanced in a state of being in contact with the soil surface while being inclined, and the weeding frame (23) or It is rare that part of the cutting blade device (39) plunges into the soil surface.

In addition, it is preferable to open the rising valve (B) at an earlier timing than the switching control of the rolling valve (E) by detecting the horizontal inclination of the mowing device (2) by the horizontal sensor (47) during the rolling control.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a side view, FIG. 2 is an enlarged side view of a part thereof, and FIG. 3 is a plan view.
FIG. 4 is an enlarged plan view of a part thereof, FIGS. 5 and 6 are front views showing the operation, and FIG. 7 is a hydraulic circuit diagram. In the figure, reference numeral (1) is a vehicle body, (2) is a mowing device, (3) is a cutting height control device, (4) is a rolling control device, (B) is a rising valve, and (E) is a rolling valve.

Claims (1)

[Claims] 1. A rolling control device 4 for controlling the cutting width direction of a cutting device 2 for cutting a grain culm from the root of a plant, and a suitable amount of the cutting device to be grounded in accordance with the rolling control. A harvesting control device for a combine, which is provided with a cutting height control device 3.