JPS5830872A - Control for travelling vehicle - Google Patents

Abstract

PURPOSE:To prevent drastic turning of a vehicle in high speed travelling by providing on a drive shaft a variable torque clutch for reversing the rotation of an axle, and providing a variable throttle valve for adjusting oil pressure operating the clutch and a relief valve interlocked with a speed changing lever. CONSTITUTION:A drive shaft 7 in a transmission case 1 is driven by an input shaft 2 through a reduction gear and change gear group a-f. A variable torque clutch 18 consisting of multiple discs is provided on a reversing drive gear 14 loosely fitting on the shaft 7, and a variable throttle valve 20 interlocked with side clutch levers 25a, 25b to adjust oil pressure is provided between a working hydraulic cylinder 19 and a hydraulic pump 22. Also, a solenoid valve 30 is provided which opens hydraulic circuits of relief valves 28, 29 for regulating the max, pressure in the hydraulic circuit at the high speed position of a speed change lever 34 or the descend position of an operating machine. Thus, safety operation becomes possible.

Description

[Detailed Description of the Invention] Generally, when moving an aircraft around a wetland, -10,000 crawlers-
When the aircraft is overturned by braking, the other claw 2- slips due to the resistance of the mud due to the braking and the other claw 2- slips, making it impossible to turn the coal. When the crawler is rotated in the opposite direction, the crawler can easily escape from the muddy soil, so it can be rotated.

In addition, when working on a relatively hard soil surface, such as dry rice field, when turning the machine after finishing the process, reverse the rotation of the claw 2 on the turning side and move the combine harvester to the transition point. Can be turned quickly with a small number of foothills 0
However, when driving on the road, it is dangerous to make a sharp turn because the vehicle is traveling at high speed, and it is also dangerous to turn off the front end of the work equipment, such as a combine harvester, to control the direction of movement of the machine during reaping work. If you want to make it follow the grain row by changing it little by little,
If you carelessly turn the wheel in a very small area, it will push the grain culm or leave the grain uncut.The present invention allows even those with inexperienced driving skills to operate accurately and safely without the above-mentioned drawbacks. The purpose is to provide a III+4 device in a traveling device capable of rotating a drive 1mK axle in the reverse direction, and a hydraulic cylinder and a hydraulic pump that operate the variable torque clutch that rotates the drive 1mK axle in the opposite direction. Threshold hydraulic circuit and side dock 2t telebar)! ! A variable pressure p valve that energizes the hydraulic pressure in the hydraulic circuit, a relief pulp that regulates the maximum pressure of the hydraulic circuit, and a hydraulic circuit for the relief pulp that is opened at the high speed position of the transfer lever or the lowered position of the work machine. It is characterized by the insertion of solenoid pulp.

The embodiment shown in the drawings will be described below. L is a split pulley 3 which is rotated by a miss engine and attached to its input shaft 2 and which expands like an acupuncture shaft, and a further split pulley driven by an engine 4. A V-belt 6 is stretched between the drive shaft 1 and the drive shaft 1 in the transmission case 1, and the drive shaft 1 in the transmission case 1 is made to have a continuously variable speed by forcibly expanding the pulley 3.
are reduction gear groups and mass speed gear groups a, b, c, and d.

pg is moved by the input shaft 2 via e and f.

8 fixes the center gear 9 that meshes with the drive gear 1a fixed on the #starter moving shaft 1, turns it with the 2-way shaft, and slides the center gear 90 on both sides of the 2-way claws. A pair of clutch gears and one shaft.

141b and the clutch gears 10a, f.
A pair of left and right passive gears lta where ob is #IRk1,
1tb is attached rotatably.

Reference numeral 12 denotes a reversing shaft provided between the drive wJ shaft 1 and the drive shaft 2y and the drive shaft 8, and a passive gear 11J is provided on both layers.

Reverse gears 10 and 12b that mesh with xxb are fixed, and a gear 13 fixed at the intermediate portion meshes with a reverse drive gear 14 that is a drive shaft drive shaft 1.

Also, my previous d self Taratte Gya 10! I, 10b is a single single shaft with M claw 2-driving wheels (wheels) xsa, lab.

It meshes with axle gears 17M and 17b fixed to l@b.

A torque transfer gear 54 consisting of a multi-plate clutch (hereinafter simply referred to as variable clutch) is attached to the reverse drive gear 54 loosely fitted to the drive shaft 1, and the variable clutch 58 The hydraulic cylinder 19 that operates is energized by a hydraulic pump 22 via a hydraulic circuit 21 having a variable throttle 9 sho 20, and the shift forks 23m, 231b (23m, 231b) that slide the two gears 10'' and the tub left and right. 7
) The shift levers zaa and z4b are left and right side controls 2vp provided on the operation panel (not shown). L/bar! 8
a, 2Sb K Mechanism Y'i'-26, connected by H1, operating lever xoa of the front e variable throttle valve 20
is slow-acting connected to both side-dock two teleopers 268.2Sb through the operation wire 21.

Note that the hydraulic pump 28 is a transmission.

Even if it is driven by the PTOt1411 of the engine, the oil pressure will also decrease as the engine's d& number decreases, so it is better to drive it with an electric motor separate from the engine O@ dynamic system.

Next, to explain the operation, when moving the aircraft forward, when the side clutch levers zsa and zsb tp are tilted forward, the two lever gears 10a and tab engage with the two lever claws of the center gear, and the variable lever 2 Tutsi Il
Since l is off, the drive gear 1a of the drive shaft 1 is the center gear 9. 2-way shaft 8, 2-way gear tea,
Single @tsa via tab, 16bO axle gear 1
7a, 17bt-drive.

Also, when turning the aircraft with a large turning radius, if you turn off one side of the 2t telebar, the 70m axle gear
Since the 0IIb force to ya is cut off, only the other single wheel 15b is forcibly driven, and one wheel 181 rotates slowly through the ground, causing the aircraft to turn with a large turning radius.

At that time, the variable throttle valve 2G and the operating lever xoa 4 are pulled by the operating wire 21, but the operating lever ZO
From the 0 point to the A point at the third point, the variable diaphragm D
Since 5P20 is in the open state, the two-way pin 11B does not operate.

Also, when turning the aircraft around a small turning radius or around one claw 2 (or wheel), use one of the claws 2.
When the lever lever ZSa is moved once from point 0 to point B, on the one hand, clutch gear 1@ is disengaged and then engages with the glue 2 claw of passive gear 111, and on the other hand, the torque of variable clutch 1s is 0 from 0 to point B. However, as the variable throttle valve 9 valve 20 passes the person, oxygen deficiency increases and acts as a brake as shown in the diagram S of the broom, and at point B, the driving force from the ground and the braking torque are equal. This causes the Seven-Nori Row 2-Mataiwa in to stop, so the aircraft turns around one of the Claws 2-.

Furthermore, when trying to make the aircraft turn around in a super 4ji manner, use Sidek 2.
When the teleper 25a is pulled from at least the 0 point to the 0 point, the torque of the variable ') vf increases after the OB point, so the reversing shaft 12 begins to rotate and quickly reaches a rotational speed of 7.
is raised, the crawler-kando-XSa is slowly started in the reverse direction, the rotational speed rItt is stopped sequentially, and at the 0 point, the υ variable clutch 18 maintains a complete hep-shaped state by the pressing force set by the relief valve 28. As a result, one of the claws rotates at the same speed in the opposite direction as the other claw 2, driving shaft 1, and performs a super-turn around the center of the hole width.

In addition, the -ml hydraulic pressure path 25 has a variable throttle valve 20 fixed by a variable throttle valve 20 (a relief that limits the hydraulic pressure to a torque (b) of about -100 degrees of Dt large torque (a)). The solenoid valve No. inserted into the circuit of the relief pulp 28 is A.
As shown in Fig.
Then switch S becomes OFF and sets the gear shift lever 34 to IIf6th gear position F2 as when driving on the road.1)
It opens and closes with switch S2, which is installed opposite to the base of the solenoid pulse inserted into the circuit of Relief Pulp 2il, and is turned off in the lowered position and OFF in the raised position. When the switch S2 is set to Gt and the solenoid valve 31 is open, the side drive 2y teleoper 2
1s! f: IIk Even if the engine is pulled to the rear, the torque of the variable clutch 18 will not exceed 100 degrees, and there will be no turning.

Also, when turning the aircraft after cutting the roots, if you forget to lift up the pre-processing device using hydraulic pressure/lift cylinder S1, you will not be able to make a super turn, but when you lift up, switch S2 is 0i11F
Therefore, it is possible to make a super stable turn.Furthermore, when driving on the road, the pre-processing device is lifted up, and the gear shift lever 14 is set to the high position [Fz] to correct the running direction using the foreshadowing set to Fz. Carelessly - Yes, I pulled it backwards and the t-shift lever 4 went to F! The Suiy f Sg that is attached to the position is on the side, so it is variable 7y? lI's torque increases only to (b) 0 East Also, when moving the aircraft backwards, both side gears are turned 9 when pulled to 9 @, and Rob moves from center gear to Omm rear passive gear XXJI, Enter llb, variable 2 test 1
mM)) The torque gradually increases and finally reaches the specified torque, so the aircraft gradually reduces its speed and comes to a standstill.
When moving backwards, the torque can be freely selected between points B and 0, and while moving backwards, either one of the phytoclutch levers 2Sa (Fusb) can be selected. Alternatively, a desired turn can be made by operating both. In the present invention, two variable torque levers for rotating the axle in the opposite direction are attached to the drive shaft, and the variable torque can be used to perform various operations. A variable throttle valve that adjusts the hydraulic pressure of the hydraulic circuit in conjunction with the two-way lever, a relief pulp that regulates the maximum pressure of the hydraulic circuit, and a hydraulic circuit for the relief pulp. By inserting a solenoid valve that opens when the gear shift lever is in the high-speed position or the work equipment is in the lower position, it is possible to freely perform large turning radius turns, pivot turns, and super pivot turns with an extremely simple device. However, the hydraulic pressure of the hydraulic cylinder that operates the variable torque clutch is limited by the relief pulp and solenoid valve regardless of the amount of movement of the side clutch lever, and it is difficult for those who are inexperienced to operate the control. However, the aircraft does not make sharp turns while working or driving at high speed on the road.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an exploded view of the transmission, the striped diagram is a perspective view of the transmission and the operating section, FIG. 1 is a torque diagram of a two-way variable torque system, and FIG. Fig. 4 is a hydraulic circuit diagram, Fig. 5 is a front view of the PID 2 lever and switch, and Fig. 46 is a side view of the lift part of the pretreatment device and the switch. 1...--Drive shaft 8...Clutch shaft 9...Center gear 10M, 1@b...2 lever gear 18...2 variable lever 1111-Hydraulic cylinder- 20-Variable throttle valve 2z-Hydraulic pump 25m
, 26b... Side dock 2 lever RB, 2m-...
Relief pulp SL, 8g...Switch 1st diagram H to → 111 1st figure Shiver yj shift ( 4th figure 2nd figure

Claims (1)

[Claims] A torque variable clutch that reversely rotates the shaft 4111 is attached to the farm driving shaft, and the pressure is adjusted to the threshold oil pressure mm between the hydraulic cylinder and the hydraulic pump that operates the torque zero engineering clutch in conjunction with the side clutch lever. A variable counter that adjusts the pressure, a relief pulp that regulates the pressure of the hydraulic circuit, and a passage that opens the hydraulic pressure of the relief pulp at the bulk speed position of the circulation lever or the lowered position of the machine. Control in driving #C by inserting a noid valve @ijM wrinkle 0