JPH01317876A - Controller for spin turn in combined harvester and thresher or the like - Google Patents

Abstract

PURPOSE:To provide always surely a spin turn action by providing clutch turning-off detecting switches in the proxility of left and right clutch bodies disengageably engaged by hydraulic cylinders respectively to drive controllably a spin turn valve through these switches. CONSTITUTION:Left and right clutch bodies 20, 21 are slidably provided on a side clutch shaft provided adjacent respective shafts of a change-over gear group built in a transmission case to slide through shifters 24, 25 by the action of left and right cylinders 62, 63. Also, a hydraulic reversing mechanism having a hydraulic clutch body 48 for rotating left and right axles in the opposite direction is provided in the transmission case is provided. Then, clutch turning- off detecting switches 69, 70 to turn on in the disengagement of respective clutch bodies 20, 21 are provided in the proximity of respective clutch bodies 20, 21 to supply controllably current through respective switches 69, 70 to a solenoid 73 of a spin turn valve 66 for opening and closing an oil supply path of the hydraulic clutch body 48.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a spin turn control device for a combine harvester or the like.

(Prior Art) The conventionally known Japanese Utility Model Application Publication No. 58-48567 discloses a left clutch body and a right clutch body that are removably engaged with a center gear rotated by a hydraulic continuously variable transmission, and the left and right clutch bodies. A hydraulic reversing mechanism includes a mechanism for engaging and disengaging the center gear, and a hydraulic reversing mechanism having a hydraulic clutch body capable of rotating the left axle and the right axle in opposite directions, after the left clutch body or the right clutch body is disengaged from the center gear. A spin-turn control device for a combine harvester or the like is described in which the hydraulic clutch body of the hydraulic reversing mechanism is turned on.

(Problem 8 to be solved by the invention) In the above-mentioned known device, the technology regarding the detailed structure is not clear.

The present invention electrically detects engagement and disengagement between the left and right clutch bodies and the center gear, and thereby opens and closes the oil feed path of the hydraulic clutch body, thereby ensuring reliable operation with a simple configuration. It is.

(Means for Solving the Problems) Therefore, the present invention provides a left latch body and a right clutch body 21 that are removably engaged with the center gear 15 rotated by the hydraulic continuously variable transmission 3, and the left and right clutch body redundant. , 21 to and from the center gear 15, and a hydraulic reversing mechanism group having a hydraulic clutch body 48 capable of rotating the left axle 43 and the right axle in opposite directions. In the spin turn control device for a combine harvester or the like, the hydraulic clutch body 48 of the hydraulic reversing mechanism group is turned on after the left latch body 21 is disengaged from the center gear 15. Left and right clutch body redundancy, 21 nearby positions,
A spin turn valve is provided, which includes a left latch off detection switch and a right latch off detection switch 1, which are turned on when the left and right clutch body 21 is disengaged from the center gear 15, and which opens and closes the oil feed path of the hydraulic clutch body. Spin turn solenoid n is marked.

This is a spin-turn control device for a combine harvester or the like configured to be energized via the leftward latch-off detection switch (to) or the rightward latch-off detection switch 70.

(Example) An embodiment of the present invention will be described with reference to the drawings.

1 is a transmission case of a combine harvester, etc., in which an input shaft 2 is horizontally installed at the upper position, a hydraulic continuously variable transmission (hydrostatic transmission) 3 is attached to one end of the input shaft 2, and a hydrostatic transmission 3 is attached to the other end of the input shaft 2. Attach the output pulley 4 leading to the reaping section.

A switching gear group 8 consisting of a large gear 5, a middle gear 6, and a small gear 7 is fitted onto the input shaft 2 so as to be slidable in the axial direction, and a shifter 9 is engaged with the switching gear group 8. 10 is a shifter shaft on which the shifter 9 is mounted.

ll is an intermediate shaft, and the intermediate shaft 11 has a small gear 4 that meshes with the large gear 5, and a middle gear 13 that meshes with the middle gear 6.
and the large gear 14 that meshes with the small gear 7 are respectively fixed. Furthermore, a fixed gear 16 that engages with the center gear 15 is fixed between the intermediate gear 13 and the large gear 14.

Reference numeral 17 denotes a side clutch shaft, and the center gear 15 is loosely fitted into the center of the side clutch shaft 17 so as to freely rotate.

Left internal teeth 1B and right internal teeth 19 are formed on both sides of the center gear 15, respectively. The side clutch shaft 17 has a left latch body that can be freely engaged and detached from the left internal tooth 18, and a right internal tooth 19.
A right clutch body 21, which can be freely connected and detached, is provided so as to be slidable thereon. 20a and 21a are the left and right inner teeth 18.1
These teeth portions 20a and 21a are formed to have a width such that they protrude outward even when meshing with the left and right inner teeth 19.

n is a shifter groove formed on the left side.

B is a shifter groove formed in the right clutch body 21,
The left shifter 24 is engaged with the shifter groove η, and the right shifter B is engaged with the shifter groove O.

A left brake 26 and a right brake n are provided on each outer side of the left and right clutch bodies 21, respectively. Left and right brakes,
n is formed from the left disk 9 and the right disk 29 (Fig. 2) fixed to the mission case L, the left disk fixed to the left annular drum (material), and the right disk fixed to the right annular drum 31. .

The left and right annular drums 30 and 31 have a left inner tooth plate and a right tooth plate 13.
5 are integrally formed, and the left and right internal teeth 34 and a are meshed with the left external tooth straw and the right external tooth g formed on the outside of the left and right tooth portions 20a and 21a of the left and right clutch bodies π and 21, respectively.

゛The left and right clutch body 21 is the left and right shifter 24, δ
When moved in the axial direction by the operation, the left and right internal teeth 18.19
When the engagement with the left and right annular drums (, 31) is released and the engagement with the left and right annular drums (, 31
Press the left and right discs respectively! , 33 are brought into pressure contact with the left and right discs 6, respectively, to operate the left and right brakes.

A left reduction gear shaft and a right reduction gear are respectively meshed with the left southern part 20a and the right tooth portion 21a of the left and right clutch bodies 20.21, and 40 is the left reduction gear (and the reduction shaft of the left reduction gear 39).

The left hand reduction gear (41t) is fixed on the outside of the left reduction gear.
A right-hand reduction gear C is fixed to the outside of the right-hand reduction gear.

A left axle shaft and a right axle U are mounted near the deceleration shafts. A left drive gear 6 that meshes with the left hand reduction gear 41 is fixed to the left axle 4, and a right drive gear 6 that meshes with the right hand reduction gear C is fixed to the right axle.

A clutch shaft 47 is mounted near the left and right axle centers U, and the clutch shaft 47 is provided with a hydraulic clutch for spin-turning. The hydraulic clutch body 48 is connected to the clutch shaft 4
It is formed from one side that is fixed to the clutch shaft 47 and the other side that is loosely fitted to the clutch shaft 47, and when hydraulic pressure is applied, the negative side 49 and the other side are connected and rotate integrally. .

A gear 51 is integrally formed on the other side.
meshes with the right reduction gear.

An intermediate gear 52 is fixed to the right side of the clutch shaft 47. A counter shaft 53 is provided near the clutch shaft 47,
Although not shown on the left side of the counter shaft 8, there is a left intermediate gear (not shown) that meshes with the left driving gear 45 via the counter gear.
A right intermediate gear 5 that meshes with the intermediate gear type is fixed to the right side of the counter shaft.

The transmission mechanism from the gear 51 meshed with the right drive gear 6 to the counter gear meshed with the left drive gear 6 via the hydraulic clutch constitutes a hydraulic reversal mechanism I for spin turns.

Therefore, Figure 3 shows the left and right clutch bodies, 21, and the hydraulic circuit that controls the hydraulic clutch body.
7 is the oil tank, 58 is the hydraulic pump, 59 is the relief valve, 60 is the side clutch valve, 61 is the unload valve, and the mouse is the left cylinder.

The filling is the right cylinder, 64 is the steering relief valve, 65 is the steering lever, 1 is the spin turn valve, the nail is the spin turn relief valve, the leap is the spin turn lever, and the left latch body is the left internal tooth of the center gear 15. 71 is a left-hand latch disconnection detection switch that turns ON when the right clutch body 21 leaves the center gear 15. 71 is a side clutch valve (equipment). The left side clutch solenoid moves the side clutch valve mark to the right, and the right side clutch solenoid moves the side clutch valve mark to the left. n is the spin turn valve I.
74 is an unload solenoid that moves the unload valve 61 to the left.

Therefore, the left and right cylinders 63 are double-acting cylinders, and the main chamber and side clutch valve (
The main chamber n of the right cylinder wing and the side clutch valve mark are connected by an oil feed duct π, and each sub chamber 79 and circle are connected to an oil return duct 81.

Therefore, an opening 83 is separately formed in the main chamber H, and the opening 83 is connected to the spin turn valve through an oil discharge duct U. The opening is normally closed from the inside by the piston 6 and the decoy, but oil is sent to the main chamber until it reaches the position where the left and right clutch bodies 21 are disengaged from the left and right internal teeth 18 and 19. piston 6
, When the decoy moves, the opening catfish, the wings form to open.

The steering lever I and the spin turn lever field are levers that can be switched to three positions: right, neutral, and left.

Figure 4 is an electrical circuit diagram, and the nail is a relay that is turned on when the steering lever 65 is tilted to the left or right, and the relay contact blade of the relay g is normally closed, but opens when the relay is turned on. be done. Reference numeral 89 denotes a delay circuit, which energizes the left side clutch solenoid 71 or the right side clutch solenoid η by operating the spin turn lever on the 6th day after the spin turn lever lever returns to the neutral position.

Electricity is further applied for about 1.2 seconds.

It should be noted that the left-hand latch-off detection switch 69 and the right-hand latch-off detection switch are shown in FIG. 3, and the left and right clutch bodies J, 2! Although it is described that it can be directly pressed by moving the left and right clutch bodies 2, in reality, the left and right clutch bodies 2
It is pressed by various link mechanisms etc. that move 0.21.

(effect) Next, we will discuss the effect.

The present invention has the above configuration, and during normal running, the rotation of the hydraulic continuously variable transmission 3 is transmitted to the small gear 1 via the switching gear group 8.
2. Middle gear 13. is transmitted to one of the large gears 14,
The intermediate shaft 11 is rotated and the center gear is connected via the fixed gear 16 fixed to the intermediate shaft 11! 5.

Since the left and right clutch bodies 20 and 21 are engaged with the left and right internal teeth of the center gear 15, 19, the left and right clutch bodies π,
2! The left and right reduction gears rotate through the left and right drive gears, and the left and right reduction gears 41 and 42 fixed to the wing rotate, and the left and right drive gears that are constantly meshing with the left and right reduction gears 41 and 42 rotate. 6.46 rotates, the left and right axles 43, and the shrine rotate and travel.

In the above, since no oil pressure is applied to the hydraulic clutch body, the - side 49 and the other side (capital) are spinning idly.

However, in this state, the aircraft was turned into a spin turn (left axle 4
3 and the right axle I to make a turn on the spot), simply switch the spin turn lever lever to the left or right. That is, by tilting the spin turn lever lever to the left, for example, The left side clutch solenoid 71 is energized, the side clutch valve is switched to the left side (rightward movement in the drawing), and the delay circuit detects that the spin turn lever 68 is moved to the left side. When the side clutch valve mark changes, oil is sent to the main chamber of the left cylinder, and the piston shaft extends. Then, the left clutch 9 is moved to the left in FIG. Press the clutch cut-off detection switch.

When the left latch off detection switch 69 is turned on, the relay contact is closed, so the spin turn solenoid n
is energized and the spin-turn valve hammer switches to the right side (
In addition, since the opening part is opened, hydraulic pressure from the hydraulic pump group is transmitted to the hydraulic clutch body 48.

When hydraulic pressure is applied to the hydraulic clutch body 48, one side 49 of the hydraulic clutch body comes into pressure contact with the other side, and in this state, the rotation of the other side (capital) that was rotating in mesh with the right drive gear catch stops. side 4
9, which rotates the clutch shaft 47 and rotates the intermediate gear
The counter shaft load is rotated via the right intermediate gear 5, and the left intermediate gear fixed to the counter shaft 8 is rotated. Although the left intermediate gear is not shown, it is engaged with the left drive gear 45 via a counter gear, so the left drive gear 45 rotates, causing the left axle 43 to rotate in the opposite direction to the right axle. Therefore, the aircraft spins and turns.

Therefore, when the aircraft makes a spin turn as described above, the left drive gear 45 rotates in the opposite direction to that during normal running, but the hydraulic clutch mechanism that transmits the opposite rotation to the left drive gear 6 Since the clutch 9 is activated after the clutch disconnection is disengaged from the left internal tooth 18 and the leftward latch disconnection detection switch field is turned on, the forward rotation force for normal running and the reversal force for spin turn are applied to the left drive gear. 45 at the same time.

After the spin turn is completed, when the spin turn lever blade is returned to the neutral position, the spin turn solenoid 73 is turned off.
When it becomes FF, the hydraulic clutch is disconnected and the reverse rotation of the left axle ends, but the left side clutch solenoid 71
is energized for approximately 1.2 seconds even after the spin turn lever arm is returned to the neutral position due to the action of the delay circuit. After the rotation is cut off, it remains in a free state for about 1.2 seconds, and then forward rotation is transmitted via the left clutch body 20, and the left axle 43 is rotated smoothly without any excessive force being applied. You can make turns.

(Effects) As described above, the present invention provides a left clutch body and a right clutch body 21 that are removably engaged with the center gear 15 rotated by the hydraulic continuously variable transmission 3.

A hydraulic left cylinder and a right cylinder 8 for connecting and disengaging the left and right clutch bodies 21 to and from the center gear 15, and a hydraulic reversing mechanism 56 having a hydraulic clutch body capable of rotating the left axle 43 and the right axle in opposite directions. Spin turn control in a combine harvester or the like, wherein the hydraulic clutch body 48 of the hydraulic reversing machine is turned on after the left clutch body 20 or the right clutch body 21 is disengaged from the center gear 15. In the device, the left and right clutch bodies 20, 21 are located near the left and right clutch bodies 20.21.
0.21 is disengaged from the center gear 15, a leftward latch-off detection switch and a rightward latch-off detection switch are provided.

The spin-turn solenoid 73, which is a spin-turn valve and which opens and closes the oil feed path of the hydraulic clutch body 48, is a combiner configured to be energized via the left-hand latch-off detection switch field or the right-hand latch-off detection switch field. Since this is a spin turn control device for spin turns, etc., the simple configuration can reliably prevent normal running force and reverse spin turn force from acting simultaneously on one axle during spin turns. .

[Brief explanation of the drawing]

Figure WIJ1 is an exploded view of the mission case, Figure 2 is an enlarged view of the main parts, Figure 3 is a hydraulic circuit diagram, and Figure 4 is an electrical circuit diagram. Explanation of symbols 1...Mission case, 2...Input shaft, 3...
Hydraulic continuously variable transmission, 4... Output pulley, 5... Large gear, 6... Middle gear, 7... Small gear, 8... Switching gear group. 9...Shifter, lO...Shifter axis, 11...
Intermediate shaft, 12... Small gear, 13... Center gear, 14
...Large gear, 15...Center gear, 16...Fixed gear, 17...Side clutch shaft, 18...Left internal teeth, 19...Right internal teeth, Red...Left clutch body, 20a
... Teeth, 21... Right clutch body, 21a... Teeth, η... Shifter groove, n... Shifter groove, 24...
...Left shifter, δ...Right shifter, Shigeru...Left brake, 27...Right brake, Shigeru...Disc, 29
... Disc, (9) ... Annular drum, 31 ...
Annular drum, 32...disk, wing...disk,
34...inner teeth, ah...inner teeth, ah...external teeth, 37.
...External tooth, 38...Left reduction gear, blade...Right reduction gear, gear...Reduction shaft, 41...Left hand reduction gear, 42...
・Right hand reduction gear, 43...Left axle, U...Right axle,
45...Left drive gear, Tsuge...Right drive gear, 47...
・Clutch shaft, 48...Hydraulic clutch body, 49...
− side, (fund)...other side, 51...Ryoichi, 52...
Intermediate gear, cooperation...Counter shaft, 9...Left intermediate gear, 55...Right intermediate gear, Kaku...Hydraulic reversing mechanism, 5
7... Oil tank, leap... Hydraulic pump, 5B... Relief valve, 60... Side clutch valve, 61
...Unload valve, 62...Left cylinder, 63
...Right cylinder, 64...Steering relief valve, vane...Steering lever, 66...Spin turn valve, 6
7... Spin turn relief valve, 6B... Spin turn lever, 69... Left latch off detection switch, Redundant... Right latch off detection switch, 71...
・Left side clutch solenoid? 2...Right side clutch solenoid, 73...Spin turn solenoid, 74...Unlawton lensoid, 75...Main chamber,
76...Oil duct, 77...Main room? 8...Oil duct, 79, (capital)...Auxiliary room. 81...Oil return duct, wing, wing...opening, cave...
・Oil discharge duct, 6, Ku...piston, correction...relay, wing...relay contact, wing...delay circuit.

Claims (1)

[Claims] A left clutch body 20 and a right clutch body 21 that engage and disengage the center gear 15 rotated by the hydraulic continuously variable transmission 3, and a hydraulic left cylinder 62 that engages and disengages the left and right clutch bodies 20 and 21 with the center gear 15. and a right cylinder 63, and a hydraulic reversing mechanism 56 having a hydraulic clutch body 48 capable of rotating the left axle 43 and the right axle 44 in opposite directions, the left clutch body 2
In a spin turn control device for a combine harvester or the like configured such that the hydraulic clutch body 48 of the hydraulic reversing mechanism 56 is turned on after the right clutch body 21 is disengaged or the right clutch body 21 is disengaged, , the left and right clutch bodies 20 and 21 are connected to the center gear 15.
A left clutch disengagement detection switch 69 and a right clutch disengagement detection switch 70 are provided, which are turned on when the left clutch disengagement is detected. A spin turn control device for a combine harvester or the like configured to be energized via a switch 69 or a right clutch disengagement detection switch 70.