JPS61220902A - Travel device in mobile farm machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a traveling device for a mobile agricultural machine.

Prior Art As a prior art, as described in Japanese Patent Publication No. 40-3164, the rotating shaft of a wheel mounted on the lower part of the machine frame is interlocked and connected to the prime mover mounted on the machine frame via a telescopic rotary transmission device. A rotary transmission releasable clutch is interposed between the wheel and the wheel, and when the clutch is operated, the screw-fitting telescoping device is actuated by rotation of the wheel, and the wheel is moved laterally.

Problems to be Solved by the Invention The distance between the ruts of the running wheels of a mobile agricultural machine varies depending on the type of crops, soil, etc., weather conditions, etc., and it is important to select the optimal rut distance that matches the conditions. However,
Conventionally, the selection and adjustment of the distance between ruts was often done by the operator's manual operation of a clutch for mechanically driven machines, or a valve for hydraulically driven machines, and the distance between ruts was frequently changed depending on the type of work. There are some cases where it is more effective to reduce the turning radius by expanding the distance between ruts and making the turning radius smaller like when turning when driving.
Regardless of whether it is mechanically driven or hydraulically driven, it takes a long time to operate to extend or shorten the distance between tracks, so clutches and valves must be kept in operation during that time, which prevents long operating times during complicated work. This may lead to interruption of work, and it is very troublesome and mentally taxing to accurately set the extension/contraction position of the distance between tracks by manual operation.

Means for Solving the Problems This invention provides a telescoping device (3) for expanding and contracting the distance between the left and right wheels (2) (2) of a traveling vehicle body (1), and a telescoping sensor (3) for detecting the telescoping position. 4), and this sensor (4) is installed.
) A traveling device for a mobile agricultural machine is provided with an image-to-image control device (5) that controls the expansion and contraction of the distance between ruts by operating the expansion and contraction device (3) based on a preset standard for the detected value of shall be.

Functions and Effects of the Invention In a mobile agricultural machine, the distance between the ruts between the left and right wheels (2) of the traveling vehicle body (1) can be expanded or contracted depending on the types of crops, soil, etc., weather conditions, etc. to meet the above conditions. In order to select and adjust the matched optimum inter-rut distance, a pre-selected setting reference value, for example a setting resistance value such as a variable resistor, and an expansion sensor (4) are set by the expansion and contraction action of the expansion device (3). The detected value to be detected, for example, the detected resistance value by a variable resistor, is compared and calculated by the image-to-image control device (5), and the initially selected setting value and the telescopic sensor (4) are compared.
The distance between the ruts is precisely expanded or contracted by the expansion/contraction device (3) until the detected value of .

The expansion/contraction sensor (4) installed in the expansion/contraction device (3) that expands/contracts the distance between tracks can accurately detect and grasp the position of expansion/contraction of the distance between tracks, so the operator can simply select the desired setting value. Thereafter, the distance between tracks can be controlled at will by operating the expansion/contraction device (3) using the image distance control device (5). For this reason, during complicated work, holding time is long, positioning is troublesome, and manual operation of latches, pulps, etc. is not required, so work can be continued smoothly and mental burden can be reduced.

Embodiment In the illustrated example, the running vehicle body (1) is long in the front and back, and a prime mover (6) is provided on the front side of the vehicle, and a transmission speed (7) with a power interlocking mechanism is provided at the rear lower part of the prime mover (6). ), left and right wheels (2) (2) are provided at the front of the vehicle body (1), and left and right wheels (8) (8) are provided at the rear of the vehicle body (1), and the motor (6) and the vehicle It is arranged to be driven in conjunction with the transmission speed (7). In addition, the entire prime mover (6) is attached to the bonnet (
9), and a meter panel section (10) is provided on the rear side of this prime mover (6) chamber, and this panel section (10) is equipped with a rut control device. i (5) inside, and the panel part (10) 1
On the 11th surface, a variable resistor and an adjustment knob (11) electrically connected to the rut distance control device N (5) for inputting a set value of the rut distance desired by the operator are provided. Further, a support body (13) on which a control handle (12) for steering the left and right front wheels (2) (2) is mounted is provided at the lower part of the panel portion (10) and projects backwardly. A step (14) having a flat part is provided below the step (14).
A cockpit (1) is located behind the handle (12) at the rear upper part of the
5), and on the rear side of this steering rk (15) there are fenders (1B) that cover the left and right rear wheels (8) (1B).
The pilot's seat (
15) Provide a safety frame (17) to cover the top.

In addition, a 7xle case (20) is fixed to a sliding case (18) which is supported on the axle case (18) of the front wheel (2) so as to be slidable in the left and right direction.
The sliding case (1) attaches and fixes the front wheel (2) to the sliding case (1).
A sliding shaft (21) supported by the front axle (22) supported by the axle case (18) corresponds to the sliding movement of the sliding case (19). It is fitted and supported so that it can be slid and interlocked.

Furthermore, a double-acting hydraulic cylinder (23) of an expansion and contraction device (3) for slidingly expanding and contracting the sliding case (19) is provided below the axle case (18) in parallel with the case (1B). A mounting piece provided at an arbitrary position and a support piece provided at an arbitrary position of the axle case (1B) are connected by a pin (24), and the inside of the cylinder (23) is provided to slide by hydraulic pressure. A mounting piece provided at the tip of the piston (25) and a supporting piece provided on a flange projecting downward from the terminal end of the sliding case (18) are connected to each other by a pin (26). Further, a telescopic sensor (4) section is further extended from the terminal end of the cylinder (23), and a sliding rod (27) of arbitrary length is connected to the terminal end of the piston (25). ), and corresponding to a slider (28) provided at the tip of this sliding rod (27), a variable resistor (28) whose electrical resistance value changes by sliding of this slider (2B). is arranged so that the slider (28) can freely slide inside the outer case (30) of the expansion/contraction sensor (4). Note that a hydraulic hose (31) for connecting the cylinder (23) and the hydraulic valve is connected to the hydraulic boat part of the cylinder (23), and the variable resistor (
28) and the image-to-image control device (5) are electrically connected.

Further, a sliding case (33) is supported on the axle case (32) of the rear wheel (8) so as to be slidable in the left and right direction, and a sliding shaft (34) supported on the sliding case (33) is provided. ) is fitted into and supported on the rear axle (35) supported by the axle case (32) so as to be slidable and interlockingly driven corresponding to the sliding movement of the sliding case (33). The rear wheel (8) is attached and fixed to the sliding shaft (30). Also, the telescopic sensor (4) is installed between the axle case (32) and the sliding case (33) in the same way as the front wheel (2). The telescoping device (3) having a section is disposed.

The left and right front wheels (2) (2) change the running direction of the vehicle body (1) by steering the steering wheel (12), and the left and right front wheels (2) (2) and the left and right rear wheels (8) (8 ) are interlocked and driven by the prime mover (6) and the transmission box (7) to move the traveling vehicle body (1) forward, but during this traveling, both the front and rear wheels (2) and (8) are driven by the type of crops, soil, etc. It is more effective and more efficient to adjust the distance between tracks to the optimum minute position by expanding or contracting the distance between tracks depending on differences in weather conditions and the like. In order to adjust the distance between tracks, first use the variable resistor and adjustment knob (
11), when the operator inputs the set value of the distance between tracks desired, the set resistance value of this variable resistor and adjustment knob (11) and the variable resistor of the expansion/contraction sensor (4) in the track distance expansion/contraction device (3) are adjusted. (29) is compared with the detected resistance value by the image distance control device (5), and the distance between the tracks is automatically adjusted by operating the expansion/contraction device (3) until both resistance values become the same value. Expand and contract.

In this way, the operator can control the front and rear wheels (2) (8) by simply inputting the desired distance between ruts, that is, the resistance value, by adjusting the variable resistor and adjustment knob (11) provided on the panel (10).
), the distance between the tracks can be controlled at will, so even during complicated work, there is no need to manually operate clutches, valves, etc., which require long operation hold times, or troublesome image-to-image alignment. Since there are no problems, work can continue smoothly without any hindrance, and the mental burden can be reduced.

In addition, the telescopic device (3) can be used only on the front wheel (2) or on the rear wheel (8) without having to operate both the front and rear wheels (2) and (8).
It is also possible to have the equipment affect only the player.

[Brief explanation of the drawing]

The figures show an embodiment of the invention, and Figure 1 is a side view;
FIGS. 2 and 3 are partially cutaway front views. In the figure, reference numeral (1) indicates a running vehicle body, (2) a wheel, (3) a telescopic device, (4) a telescopic sensor, and (5) an image-to-image control device. Figure 1

Claims (1)

[Claims] A telescoping device (3) for expanding and contracting the distance between the left and right wheels (2) (2) of the traveling vehicle body (1) is provided with a telescoping sensor (4) that detects the telescoping position. The expansion and contraction device (3
) is operated to control the expansion and contraction of the distance between ruts (
5) A traveling device for a mobile agricultural machine.