JPS62261620A - Travel control device for mobile, agricultural machinery - Google Patents

Abstract

PURPOSE:To reduce the sinkage of a travelling equipment and obtain easy recovery of the equipment from the sinkage, by providing both a running- direction-clutch, which can connect/disconnect the power transmission to the travelling equipment, and a running-direction-brake, which puts the brake on the intertia-caused turning of the travelling equipment. CONSTITUTION:A pair of traveling equipment, right and left, are driven or propelled by a motor 1. A funning-direction clutch 40 is able to connect/ disconnect the power transmission to each travelling equipment. A running- direction brake 41 brakes accompanying turning of the travelling equipment the power-transmission to which was disconnected by this running-direction clutch 40. As soon as the brake of this running-direction brake 41 is applied. owing to the linkage work, a supercharger 5 or the motor 1 is activated so as to make supercharging. With this contrivance, lowering of the output at the time of steep turn can be prevented, thereby reducing the sinkage of the travelling equipment and facilitating the recovery of the equipment from the sinkage.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a travel control device for mobile agricultural machinery, etc., and can be used for combines, rice transplanters, tractors, etc.

[Prior art] A prime mover with a supercharger is mounted on the engine, and the supercharger is operated according to the load.

Problems that Development II aims to solve Tractors, combine harvesters, and rice transplanters, which perform specific tasks while traveling through soft fields, often work while traveling back and forth within the field section. When making a return turn, the traveling gear on the turning side does not rotate and travel, so it becomes embedded deep in the soil, sinks, and the tilt of the aircraft increases, causing the traveling gear to escape from the soil when going on the go-around stroke after the turn. It is often difficult to do.

Means for Solving the Problems This invention provides a pair of left and right traveling devices (2) driven and propelled by a prime mover (1), a running clutch (40) that can switch on/off transmission to each of the traveling devices (2), and This running clutch (40) has a running brake (41) etc. that brakes the rotation of the traveling device (2) on the disengaged side, and by braking the running brake (41), the supercharger (5) of the prime mover (1)
) is configured to operate a traveling control device for a moving bed, etc., in an interlocking configuration so that supercharging is possible.

The operating prime mover (1) of the invention transmits power to a pair of left and right traveling devices (2) via a traveling transmission device having a running clutch (4o), and the machine travels to perform a predetermined work, such as on the edge of a field. When turning, the running bag 2! on the disengaged side of the strike clutch (40) is operated by disengaging the strike clutch (40) on the side to be turned. Since the transmission (2) is not performed, turning is performed only by the transmission rotation of the traveling device (2) on the opposite side. After turning, by engaging this direction clutch (40), the left/right retravel device (2
), the machine moves straight through a backward stroke parallel to the forward stroke, allowing work to begin again.

In such a turning process, when turning at a steep angle, the strike brake (41) is activated to fix the running bag 21 (2) on the turning side so as to eliminate the rotation. In the operation of the running clutch (40), by disengaging the running clutch (40) and further braking the running brake (41) on this side, the rotation of the running gear (2) on the turning side is fixed, It is easy to turn in the strike direction.

At this time, along with the action of the strike brake (41), the supercharger (5) of the prime mover a (1) can increase the supercharging pressure, increasing the output of the prime mover (1), and increasing the output of the prime mover (1).
0) Increase the transmission driving force of the entry side traveling device (2) so as not to reduce the driving force of the traveling device (2) during turning, release the strike brake (41), and engage the strike clutch (40). Then, when the vehicle goes straight on the homeward stroke, the supercharger (5) is switched to not work, and the normal driving transmission is performed using the output of the prime mover (1).

Effects of the Invention As described above, since the supercharger (5) of the prime mover (1) works in conjunction with the braking action of the running brake (41) of the traveling device (2), the output during sharp turns is reduced. This prevents the traveling device (2) from sinking and reduces the sinking of the traveling device (2).
), it is easy to escape from subsidence, and it is possible to turn quickly and easily.

Embodiment In the illustrated example, the combine harvester includes a vehicle body (7) equipped with a traveling device (2) consisting of a pair of left and right crawlers, a threshing device (8), a prime mover (1), a grain tank (9), and a waste A culm cutter (10), a culm discharge knotter (11), etc. are installed or installed. In addition, a reaping bag (3) is attached to the front of this threshing bag ffi (8), and a culm transfer device (12) is installed.
The structure is such that the harvested husk culm is transferred and supplied to the threshing bag W1 (8).

original! ! The supercharger (5) of aircraft I (1) is connected to the air cleaner (1).
3) to the cylinder head (10).
A compressor (18) is provided in the middle of the cylinder head (15), and this is provided to be rotated by an exhaust turbine (19) provided in the middle of the exhaust passage (18) communicating from the cylinder head (10 to the muffler (17)). A switching valve (
20) can be switched to cause the exhaust gas to work on the exhaust turbine (19) or to exhaust it without causing it to work;
This switching valve (20) is configured to be switched by operating a hydraulic cylinder (23) of a hydraulic circuit (22) using a solenoid valve (21). (20 is the suction path (
A surge tank provided in the switching valve (20) communicates with the diaphragm chamber (25) at the base of the switching valve (20), and the pressure from the surge tank (24) causes the switching valve (20) to be connected to the exhaust turbine during normal times. (19) The switch is operated so that exhaust is not performed to the side. Solenoid valve (21)
By switching, the switching valve (20) is operated against the pressure of the diaphragm chamber (25), and the exhaust gas can be switched to the exhaust turbine (19) side. (2B
) is a control device that switches and operates the solenoid valve (21) so that the supercharger (5) operates when the braking force of the travel brake (41) is detected by the brake sensor (47) and exceeds a predetermined value. established in a relationship. (
27) is a monitor that displays the relationship between transmission load and supercharging pressure in a graph.

Traveling transmission device i of traveling device (2)! t (2B) has a hydraulic continuously variable speed bag on the top end! 1 (6), the input shaft (29) of this hydraulic continuously variable transmission (6) is configured to transmit power from the prime mover (1), and the final pair of left and right wheel shafts (30) of the travel transmission (28) are provided. The configuration is such that transmission can be performed between a pair of left and right traveling devices (2).

The hydraulic continuously variable transmission (6) transmits and rotates the output shaft (31) in a continuously variable manner by the driving rotation of the input shaft (23). When the transmission is stopped from the neutral position to one side, the transmission is in the forward position where the transmission is sequentially transmitted at high speed in the forward rotation direction, and when it is rotated to the opposite side, it is set to the reverse position where transmission is transmitted at high speed sequentially in the reverse direction, allowing continuously variable transmission.

The input shaft (33) at the upper end of the traveling transmission device (28) is connected to the output shaft (31), and is provided with a speed change gear (34), and the cutting device (3) and the culm transfer device (+2 ) is provided with a reaping output pulley (3B) capable of transmitting the reaping transmission device Ell (35) with a belt. (37) is a running clutch shaft, which is connected to side gears (
39) to constitute a strike-F-7 gear (40), and furthermore, a strike brake (39) is provided on the outside of this side gear (39).
41), and with the side gear (3S) removed from the center gear (38) and the strike clutch (40) disengaged, the multi-disc type thick friction brake disc is moved further outward. Apply pressure and apply the strike brake (4
1), and by braking the running brake (41), the rotation of the wheel shaft (30) and the running gear ffl (2) on the side where the running clutch (40) is disengaged is stopped.

The interlocking relationship between the travel brake (41) and the solenoid valve (21) is shown in Figures 1 and 2 when the side gear (3)
When the strike brake (41) is braked by the operation 8), the brake disc is suppressed during braking, and the brake senna (47) detects the pressure from the brake disc, and the control wave 22 (2B) is This brake sensor (47)
The solenoid valve (21) is switched to the supercharging m(5) activation side upon detection of a pressure above a predetermined value. On the other hand, if the pressure of this brake disk is reduced below a predetermined level, the movement of the supercharger (5) will stop.

The embodiment shown in FIG. 3 shows a hydraulic circuit for a strike valve (48) consisting of a solenoid valve that operates a strike clutch (40) and a strike brake (41).
A brake sensor (47) is provided to detect the amount of suppression operation by the hydraulic pressure of the piston (50) of the left and right strike cylinders (49) that operate the strike brake (41) and the strike brake (41), and input it to the control wave F11 (2B). It is structured as follows. This strike cylinder (49) is equipped with a hydraulic pump (51) and a relief valve (52) by switching the strike valve (48).
A clutch oil drain circuit (53) drains the oil pressure sent through the clutch (40) at the disengaged position of the strike clutch (40), and a rear strike brake (4■) is braked after the strike clutch (40) is disengaged. Exhaust at braking position? +11 is provided, and this clutch oil drain circuit (54) is provided.
3) and the brake oil drain circuit (54) using the switching valve (5).
Normally, this switching valve (55) operates the clutch oil drain circuit (53) to disengage only the running clutch (40), but this 9J
(By closing the + valve (55), the strike brake (41) is further provided in a braking state. (56) is a strike lever, which is provided so as to be rotatable in the left and right directions, and rotates at a constant left and right direction. At the moving angle, only the strike clutch (40) can be disconnected by switching the strike valve (48), but by rotating the strike valve (48) beyond a certain angle, the switching valve (55) is closed and the exhaust 1ffb circuit (54) is turned off. ), the piston (50) is pushed to the oil drain position by the strike brake (
41). The pressing force by the piston (50) at this time is detected by the brake sensor (47) and the control wave ff is detected.
Let f (2B) be controlled.

In addition, a throttle JC is provided on the thread/id valve (21),
The supercharger (5)
) may be adjusted and controlled to increase the output of the prime mover.

The reaping device m (3) is equipped with a culm lifting device Fl (42), a raking device (43) for scraping the raised culm, a cutting blade device (44), etc., and is transmitted, and a culm transfer device ff1 is installed. (12) consists of a stock transfer device that clamps and transfers the stock base of the harvested grain culm, and a spike transfer device that engages and transfers and guides the tip of the transfer culm, each of which is configured in an interlocking manner. ing.

The threshing device (8), the transfer spiral of the grain tank (9), etc. are configured to be transmitted from the driving force @ (1) via the threshing transmission device a (45) and the grain tank transmission device (4B).

Driven by the prime mover (1), the hydraulic continuously variable transmission (6)
input shaft (29), threshing transmission (45).

It can also transmit grain tank transmission equipment ffl (4B), etc.

When the slope shaft (32) is operated to the forward position n and the output shaft (31) is rotated, the input shaft (33) of the traveling transmission line 21 (28) is rotated.
) is rotated, and the transmission gear (34) and the strike gear (34) are rotated.
40) etc. and travels from the wheel shaft (30)? Place (2)
is transmitted. Also, the reaping transmission device from the reaping output pulley (38)! The various parts of the reaping device (3), the culm transfer device 21 (12), etc. are transmitted through the reaping device (35), and the reaping work can be performed.

The culm, which is guided to a certain posture by the culm lifting device ffi (42), is cut by the cutting blade device (40) while being raked by the raking device 1lt2t (43), and then transported by the culm transfer device 21 (12). The shelling device t (8) is supplied to the threshing device (8).
) The culm threshed is transferred to a culm cutter (1G) or a culm notter (11) and forced into a culm. The threshed grains are sorted by a shaking sorter or the like and then stored in a grain tank (9). When taking out the grains from the grain tank (9), the grain tank transmission device (48) drives a grain hoisting device, etc., and can discharge the grains to the outside of the machine.

When driving straight, left and right strike clutches (40) (4Q
) is engaged, so the brake sensor (4
7) is in a non-detection state and the supercharger (5) does not work.
When turning, use the strike clutch (4) on either the left or right turning side.
0) to change the running direction. At this time, the running clutch (40) on the turning side is disengaged, so that the running gear fi (2) on the same side is not driven, but the relationship is such that it can be driven around by the running inertia of the vehicle body.

This strike clutch (4
0) The running gear (2) on the cutting side is likely to turn around easily, so when making a sharp turn, the running clutch (40) is activated to control the running gear (2) on the cutting side by applying the strike brake (41). Eliminates the need for turning around, allowing for a smaller turning radius. When this running brake (41) is braked, the brake sensor (47) detects this braking force, and the control J1
Outfit 2? (2B), the solenoid valve (21) is turned on to supercharge I! (5) Switch to the operating side, increase the boost pressure, and start! ! Increase the output of I machine (1).

When completing a turn and moving straight again, apply the strike brake (
41) is released, the braking force by the brake sensor (47) is no longer detected, and the solenoid valve (21)
is switched so that the supercharger (5) does not operate, the supercharging pressure becomes low, and the output of the prime mover (1) also becomes low.

In this way, when the load on the traveling gear 21 (2) increases, the output of the R drive a (1) is increased, and the input shafts (23), (33) and the threshing transmission bag 2t (45) It is possible to prevent a decrease in power transmission rotation, etc., and maintain high performance in combine harvester operation.

[Brief explanation of drawings]

The figures show one embodiment of the present invention; Fig. 1 is a partial sectional mechanism diagram, Fig. 2 is a block transmission diagram, Fig. 3 is a hydraulic circuit diagram of another embodiment, and Fig. 4 is a side view. It is. In the figure, code (1) is the prime mover, (2) is the traveling device, and (3)
(5) is a supercharger, (40) is a running clutch, (41) is a running brake, and (47) is a brake sensor.

Claims (1)

[Claims] A pair of left and right traveling devices (2) driven and propelled by the prime mover (1), a strike clutch (40) that can turn on/off transmission to each traveling device (2), and this strike clutch (40).
0) It has a strike brake (41) etc. that brakes the rotation of the running device (2) on the cut side, and the supercharger (5) of the prime mover (1) is operated by the braking of the strike brake (41). A travel control device for mobile agricultural machinery, etc., which is configured in an interlocking manner to enable supercharging.