JPH0582753U - Traveling equipment for agricultural work vehicles - Google Patents

Abstract

(57) [Abstract] [Purpose] If the steering operation is performed while the aircraft is traveling, the center of gravity of the aircraft moves outward in the turning direction, increasing the traction force on that side, and conversely reducing the load on the traveling device on the turning center side. The purpose is to facilitate the turning of the machine body. [Structure] A main frame 1 on which a working machine is mounted is mounted on a traveling device 2 composed of left and right track frames 6 on which crawler belts are stretched, and the center of gravity of the main frame 1 is moved left and right with respect to the traveling device 2. In an agricultural work vehicle that is connected via a movement adjusting device and has steering means respectively on the left and right traveling transmission systems, the steering means and the center of gravity horizontal movement adjusting device are provided.
When one of the steering means is actuated, the center-of-gravity lateral movement adjusting device is interlockingly linked so as to operate so as to slightly move the center of gravity of the main frame 1 to the other track frame 6 side. Traveling device.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 A work machine is mounted on the main frame, and the pair of left and right traveling devices are driven via steering means such as side clutches or side brakes, and the center of gravity of the main frame on which the work machine is mounted is moved to the left and right. It relates to agricultural work vehicles that have made it possible.

[0002]

[Prior Art]

 Conventionally, a main frame equipped with a working machine is mounted on a traveling device consisting of left and right track frames with stretched crawler tracks, and one track frame is arranged to move the center of gravity of the main frame to the left and right with respect to the traveling device. It can be adjusted up and down, or linked via a center of gravity left and right movement adjustment device that adjusts one track frame to the left and right, and the left and right traveling transmission systems can be operated with side clutches and side brakes, respectively. Agricultural work vehicles equipped with means are already known.

[0003]

[Problems to be solved by the device]

 The known agricultural work vehicle described above has problems such as that the vehicle is pitched (so-called rodeo phenomenon) when it is rotated while traveling on a dry paddy or concrete paved road surface, which is dangerous and the operator is fatigued. was there.

[0004]

[Means for Solving the Problems]

 The present invention provides a main frame mounted with a working machine to a traveling device composed of left and right track frames on which crawler belts are stretched, and the center of gravity of the main frame is moved left and right with respect to the traveling device. In an agricultural work vehicle that is connected through a device and has steering means for the left and right traveling transmission systems, respectively, when either one of the steering means and the center-of-gravity lateral movement adjustment device is operated, By moving the center of gravity of the main frame so that the center of gravity of the main frame moves slightly to the side of the other track frame, the center of the aircraft will move when one of the steering means is turned off or braked in order to rotate the aircraft. The above problem was solved by slightly moving to the side of the track frame on the other side where is driven.

[0005]

[Action]

 The traveling device is driven via the left and right traveling transmission systems in which steering devices such as side clutches and side brakes are respectively interposed, and one steering device is operated to rotate the machine body, and the other traveling device. The aircraft will rotate if driven only. At that time, when one of the steering means is operated, the center-of-gravity movement adjusting device operates in conjunction with it, and the center of gravity of the main frame on which the working machine is mounted moves a little to the driving device side, so the driving side The load on the traveling device is increased and the driving force is increased, and the load on the traveling device on the side where the steering means is steered is reduced and the vehicle becomes slippery, which results in smooth running. Then pitching disappeared.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the combine traveling device shown in the drawings. On the main frame 1, a threshing device 4a is mounted on one side as a working machine similar to the conventional one, and a grain tank 4b is mounted on the other side. Is provided with an operation panel and a driver's seat 4c as a driving device at the front thereof, and a transmission case for distributing the engine 9 and its power to the pretreatment device 9a and the threshing device 4a and the transmission 4 of the traveling device. The transmission 4 described above is equipped with a main transmission, an auxiliary transmission, and a side clutch (or side brake) or the like as steering means interposed in the transmission systems of the left and right traveling devices 2 and 2, respectively. It has various clutches including steering means.

Further, the left and right traveling devices 2 include a drive sprocket 5 mounted on the drive shafts 3, 3 extending left and right from the mission case, and an idle wheel supported on the rear portion of the track frame 6 so as to be adjustable in forward and backward directions. 7, a rubber crawler 8 is stretched, and a plurality of rolling wheels 10 that are in pressure contact with the upper surface of the rubber crawler 8 are axially supported on the track frame 6 and are laterally provided at the front and rear of the lower portion of the main frame 1, respectively. Direction support shafts 11, 11 are supported, and the bent portions of the L-shaped links 12, 12 are rotatably attached to both ends of the support shafts 11, 11, and the lower portion is attached to the bracket hanging from the main frame 1. One end of a horizontal control single-acting hydraulic cylinder 14, one end of which is connected to the main frame 1, is connected to the upper part of the swinging arm 13 which pivotally supports the above-mentioned front and rear links 12, At the top of twelve The lower end is connected to the front and rear of the track frame 6 by a shaft 6a, and is mounted on the main frame 1 for an inclination sensor and a grain culvert transport path. The detection values of the handling depth adjustment sensor, the traveling speed sensor, etc. are input to the microcomputer and each part is automatically controlled, and the hydraulic cylinder 14 expands and contracts according to the detection result of the tilt sensor, whereby the truck Since the frame 6 moves up and down via the swing arm 13, the rods 15 and 15, and the links 12 and 12, the main frame 1 is always held substantially horizontal.

Next, the center-of-gravity lateral movement adjusting device will be described. The steering means doubles as a side clutch lever or an operation of raising and lowering the pretreatment device by tilting back and forth. Intermittent operation is performed by operating an intermittent monolever or the like, and the opening / closing operation of a side clutch switch opposite the monolever or the side clutch lever is also input to the microcomputer. At that time, when either one of the side clutches is disengaged, the timer of the control system on the other side of the microcomputer is set as shown in FIG. 3, and the output from the hydraulic cylinder 14 on that side is output by the output for a certain period of time. The mounted solenoid valve operates from the neutral position to the lower side and returns to the neutral position after the set time elapses, so that the hydraulic cylinder 14 on the other side where the side clutch is not disengaged contracts and the main frame descends. The center of gravity moves to the driving device that is driven, which increases the load on the driving device on the driving side and increases the driving force, and reduces the load on the driving device on the side clutch disengaged side. It becomes slippery and the aircraft turns smoothly without pitching. Even when the traveling direction is reversed, the center-of-gravity movement control with the same effect is performed.

FIGS. 4 and 5 show another center-of-gravity lateral movement adjusting device that controls the center of gravity of the main frame 1 on which the working machine is mounted to move left and right when the machine is traveling. A paddy sensor (1), a paddy sensor (2), and a paddy sensor (3), which detect the amount of paddy in three steps as an output device, are attached in order from the bottom, and the detected values are input to a microcomputer, and a side clutch switch is provided. Is ON (side clutch on that side is disengaged), for example, when turning left by disengaging the left side clutch, the paddy sensor (3) is ON because the paddy filling amount is large. , The right side hydraulic cylinder 14 is reduced to the setting 3 and tilts to the right side, whereby the center of gravity of the machine moves to the right side by the amount corresponding to the set value, the driving force on that side increases, and the left side traveling device The load on the skid is reduced As a result, the airframe can be smoothly moved as in the above-described embodiment. When the paddy sensor (3) is OFF and the paddy sensor (2) is ON, the hydraulic cylinder 14 on the right side is reduced to the set value 2, and the paddy sensor (2) is OFF and the paddy sensor (1 ) Is ON, and the paddy sensor (1) is also OFF, the hydraulic cylinder 14 is reduced by an amount corresponding to setting 2, setting 1 or setting 0. Further, when the right side clutch is disengaged, as shown in FIG. 5, the movement control of the center of gravity of the airframe similar to that at the time of leftward traveling is performed.

In addition, in a center-of-gravity left-right movement adjusting device in which one of the pair of left and right crawlers is moved left and right to adjust the left-right movement of the center of gravity of the body, the movement adjustment drive device is used as the detection result of the side clutch switch. Even if the left and right movements are adjusted by the set amount based on the above, the movement adjustment of the center of gravity at the time of traveling of the airframe can be performed similarly to the above-described embodiment.

Reference numeral 16 denotes an upper wheel that is rotatably supported by the tip of a substantially horizontal bracket 17 that projects laterally from the main frame 1. As shown in FIG. 6, left and right large diameter portions 16a, 16 are provided. a and a cylindrical shaft portion 16b connecting them, the large diameter parts 16a, 16a support the both sides of the cored bar 18 of the rubber crawler 8 on the upper side thereof and project from the outer peripheral surface of the cylindrical shaft part 16b. The spiral 19 transfers the mud accumulated on the track frame 6 and pushes it out from the hole 20 ... which is formed by penetrating the large diameter portion 16a on the transfer end side and lowering the main frame 1. When this is done, the upper wheels 16 will not be pushed up by the accumulated mud and the bracket 17 will not be damaged.

FIG. 7 shows an oiling device for the link 12. The bending part of the link 12 is rotatably supported by a support shaft 12a, and the oiling hole 22 is formed from the end of the support shaft 11 to a boss part. The grease is easily drilled from the side of the machine since the corresponding part is drilled so as to communicate with the axis from the inner end to the outer periphery at a right angle, and the grease nipple 23 is attached to the outer periphery of the side end. Can be injected into.

[0013]

[Effect of the device]

 According to the present invention, a main frame 1 on which a working machine is mounted is mounted on a traveling device 2 composed of left and right track frames 6 on which crawler belts are stretched, and the center of gravity of the main frame 1 is moved left and right with respect to the traveling device 2. In an agricultural work vehicle that is connected via a lateral movement adjusting device and has steering means in the left and right traveling transmission systems, one of the steering means and the center of gravity lateral movement adjusting device is used. When it is operated, the center of gravity horizontal movement adjustment device is linked so as to operate so as to slightly move the center of gravity of the main frame 1 to the side of the other track frame 6, so when the aircraft is rotated, the road surface looks like dry rice field or concrete. Even if the steering mechanism is stiff, when one of the steering means is actuated, the center-of-gravity movement adjustment device operates and the body center of gravity moves to the traveling device on the side where the steering means is inactive (outer side in the turning direction). When the vehicle moves to the side, the load on the traveling device on that side increases and the driving force increases, and at the same time, the load on the traveling device on the one non-driving side is reduced and the vehicle becomes slippery, so that the aircraft does not pitch. Can be done smoothly.

[Brief description of drawings]

FIG. 1 is a side view of a traveling device.

FIG. 2 is a plan view of the same lifting device.

FIG. 3 is a flowchart of a traveling device lifting type traveling control.

FIG. 4 is a weight-sensing downward-sloping circulation control flowchart.

FIG. 5 is a flow chart of the same as above.

FIG. 6 is a side view of the combine.

FIG. 7 is a plan view of upper rollers.

FIG. 8 is a side view of the same.

[Explanation of symbols]

 1 Main Frame 2 Traveling Device 6 Track Frame 8 Rubber Crawler 12 Link 13 Swing Arm 14 Hydraulic Cylinder 16 Upper Wheel

Claims (1)

[Scope of utility model registration request] 1. A main frame 1 on which a working machine is mounted is moved to a traveling device 2 composed of left and right track frames 6 on which crawler belts are stretched, and the center of gravity of the main frame 1 is moved left and right with respect to the traveling device 2. Connected via the center of gravity lateral movement adjustment device,
In an agricultural work vehicle in which steering mechanisms are respectively provided in the left and right traveling transmission systems, when the steering means and the center-of-gravity lateral movement adjusting device are operated, the center-of-gravity lateral movement adjusting device is mainly used. A traveling device for an agricultural work vehicle, characterized in that the frame 1 is interlockingly linked so as to operate so as to slightly move the center of gravity of the frame 1 to the side of the other track frame 6.