JPS6119201B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sliding rotary device.

Many tractor-mounted rotary devices have already been provided in which the rotary tilling section is movable laterally, and the rotary tilling section is offset by moving laterally with respect to the tractor when tilling the furrow. This is very convenient because it allows the tillage to be completed to the edge of the ridge, making it easy to treat the edge of the ridge after tilling. As a rotary device of this type, a movable frame including a connecting portion for a tractor and an input gear case is supported so as to be slidable in the lateral direction between a pair of left and right support cylinders at the top of the rotary machine frame.
A transmission shaft that transmits power from the input shaft to the pawl shaft is fitted into one support cylinder side, and a transmission shaft that transmits power from the input shaft to the pawl shaft is fitted into the other support cylinder side.
A sliding type is provided which is provided with a lateral movement mechanism for sliding the movable frame laterally with respect to the rotary machine frame. After lifting the rotary device, the rotary machine frame (rotary tiller side) can be easily slid laterally by activating the lateral feed mechanism, and the connecting part of the rotary device to the tractor can be replaced. This has the advantage that it is easier to handle when offset, compared to a type that is mounted offset. However, in the past, a hydraulic cylinder was built into the support cylinder as a lateral feed mechanism, so
Processing precision is required for the seal structure, etc., and hydraulic piping, control valves, etc. are also required, and there is a problem in that the manufacturing cost increases significantly.

The present invention has been provided for the purpose of solving such conventional problems, and its feature is that a connecting part and a A movable frame equipped with an input gear case is supported so as to be slidable in the horizontal direction, and a transmission shaft that transmits power from the input shaft to the pawl shaft is fitted into one support cylinder side, and a transmission shaft that transmits power from the input shaft to the pawl shaft is fitted inside the other support cylinder side. , a sliding rotary device equipped with a transverse feed mechanism for sliding the movable frame laterally with respect to the rotary machine frame, the transverse feed mechanism has a feed screw shaft that can freely rotate in forward and reverse directions, and this screw shaft A switching device was provided to connect the transmission shaft to the transmission shaft in a forward/reverse manner. The point is that it is equipped with a pair of friction wheels.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. In FIGS. 1 and 2, 1 is a tractor;
2 is a hydraulic system, and a pair of left and right lift arms 3,3
has. 4 is a three-point link mechanism that tows and attaches the rotary device to the rear of the tractor 1, and the top link 5
and a pair of left and right lower links 6, 6, each lower link 6, 6 has a lift rod 7,
7 to each lift arm 3, 3. The rotary device is roughly divided into a rotary machine frame 8, a movable frame 9, a rotary tiller 10, and a rotary cover 1.
1, a gauge wheel 12, etc. The rotary machine frame 8 includes a transmission case 13 and a side frame 14 arranged on the left and right sides, a pair of support cylinders 15 and 15 provided oppositely at the upper ends of the transmission case 13 and the side frame 14, and each support cylinder 1.
It is provided with a connecting member 18, etc., which connects the rear ends of brackets 16, 16, which are protruded rearward from the outer ends of brackets 5, 15, to the left and right via receivers 17, 17,
A gauge wheel support frame 19 that supports the gauge wheel 12 is pivotably supported on the connecting member 18 so as to be able to swing vertically, and a bracket 21 of a plowing depth adjustment mechanism 20 is attached. The rotary tiller 10 includes a pawl shaft 22 installed between the lower ends of the transmission case 13 and the side frame 14, and a number of tilling pawls 23 implanted therein. is driven via a chain transmission mechanism 24. The movable frame 9 includes an input gear case 25, a pair of left and right cylindrical bodies 27, 27 provided on both sides of the input gear case 25 via lids 26, 26, and the input gear case 2.
Top mast 28 erected on 5, each cylinder 2
A pair of left and right lower link mounting bases 29, 29 projecting forward from the cylinders 7, 27, guide cylinders 31, 31, etc. provided rearwardly from the respective cylinders 27, 27 via brackets 30, 30, Each cylinder 27, 2
7 is fitted into supporting cylinders 15, 15 of the rotary machine frame 8, and guide cylinders 31, 31 are fitted into the connecting member 18 so as to be slidable in the lateral direction. The top mast 28 and the lower link mounting bases 29, 29 constitute a connecting portion, to which the top link 5 and lower links 6, 6 are respectively detachably connected. The input gear case 25 has left and right lower link mounting bases 2.
An input shaft 32 is provided so as to be located in the center between 9 and 29, and a bevel gear mechanism 34 for interlocking the input shaft 32 and the first transmission shaft 33 is built-in. The bevel gear mechanism 34 includes a bevel pinion 35 and a bevel gear 36. The first transmission shaft 33 has a ball bearing 3 in the input gear case 25.
7, 38, and concentrically protrudes from one support cylinder 15 and cylinder 27 side, and a spline cylinder shaft 39 slides in the axial direction on the outer end side. It is fitted with a mantle that allows it to move freely. The spline cylinder shaft 39 is connected to the transmission case 1 via a ball bearing 40.
A sprocket 42 of the chain transmission mechanism 24 is fixed to the outer end of the second transmission shaft 41.
A transverse feed mechanism 44 for sliding the movable frame 9 laterally relative to the support cylinders 15, 15 is built in the support cylinder 15 on the opposite side to the transmission shafts 33, 41, and this lateral movement The mechanism 44 includes a female screw body 46 fixed to the support cylinder 15 and a feed screw shaft 47 that is screwed into the female thread body 46 so as to be reversible in the forward and reverse directions.
is held by a ball bearing 48 and can be interlocked with the first transmission shaft 33 via a forward/reverse switching device 49 in the input gear case 25. The switching device 49 includes a friction ring 50 having concentric friction surfaces 50a and 50b on its inner and outer peripheries as shown in FIGS. 3 and 4.
and forward/reverse rotation friction wheels 51, 52 which can freely move toward and away from the inner and outer peripheries of the respective friction surfaces 50a, 50b, and the friction wheels 50 are spline-fitted to the end of the first power transmission shaft 33. The removal prevention plate 53 prevents removal. The friction rings 51 and 52 are rotatably supported by a swing arm 54 bent in a dogleg shape by support shafts 55 and 56, and are always pressed against a friction ring 57a integrated with a gear 57. The swing arm 54 is fixed to a rotation shaft 58 inserted through the lid 26 of the input gear case 25, and a gear 57 is fitted onto the rotation shaft 58 so as to freely rotate. The gear 57 is always engaged with a gear 59 fixed to the inner end of the screw shaft 47. A lever 60 is fixed to the outer end of the rotation shaft 58. 6
Reference numeral 1 denotes a switching lever of the switching device 49, and as shown in FIG.
4, and its rocking plate 64
There is an interlocking pin 65 that engages with a notch in the lever 60.
is provided. A regulating means consisting of a pin 66 and a notch 67 is provided between the support bracket 62 and the rocking plate 64 so as to restrict relative rocking between the two, and a positioning means is provided to hold the switching lever 61 in the neutral position. A mechanism 68 is provided. The positioning mechanism 68 includes a conical recess 69 formed in the swing plate 64, a ball 70 held by the support bracket 62, a spring 71 that biases the ball 70 toward the recess 69, a holding case 72, and the like. It is configured. The swing plate 64 is provided with a lever 73 on the opposite side of the switching lever 61, and this lever 73 has a pair of protrusions on the connecting member 18 side when the movable frame 9 and the rotary machine frame 8 slide relative to each other to the limit. 74,
74 abuts the switching device 49 to return it to neutral.
75 is a universal joint shaft for power transmission.

Next, the operation of the above configuration will be explained. During normal tillage, the switching lever 61 is operated by the positioning mechanism 68.
Therefore, the switching device 49 is in the neutral state, and the friction wheels 51 and 52 are held in the neutral position by the friction wheels 50, which are the inner and outer friction surfaces 50a and 50b.
It's not even occlusal. Of course, at this time, the movable frame 9 is located at the lateral center of the rotary machine frame 8, so there is no lateral deviation between the rotary device and the tractor 1, and their centers are aligned.

During plowing work, when power is transmitted from the tractor 1 to the input shaft 32 of the rotary device via the universal joint shaft 75, the power is transmitted to the bevel pinion 35,
Bevel gear 36, first transmission shaft 33, spline cylinder shaft 39, second transmission shaft 41, chain transmission mechanism 2
4 to the pawl shaft 22, thereby rotating the rotary tiller 10 in the direction of arrow a to till the field.

When moving the rotary machine frame 8 and the rotary tiller 10 to the right side in FIG. 2, for example, when tilling the furrow, etc., after lifting the rotary device, move the switching lever 61 from the solid line position in FIG. b Operate in the direction of the arrow. Then, the lever 60 and the rotating shaft 58 are rotated in the direction indicated by the arrow c via the swinging plate 64 and the interlocking pin 65, and the swinging arm 54 is pivoted together with the rotating shaft 58 in the same direction. Assuming that the first power transmission shaft 33 and the friction ring 50 are now rotating in the direction indicated by the d arrow,
The above-described swinging of the swinging arm 54 causes the friction ring 51 to move against the friction surface 5 on the inner peripheral side of the friction ring 50 as shown in FIG.
0a, the friction ring 51 moves in the direction of arrow e,
The gears 57 rotate in the direction indicated by the arrow f, and the screw shaft 47 rotates in the direction indicated by the arrow d through the gears 57 and 59, so that the screw shaft 47 and the female threaded body 4
6, the rotary machine frame 8 slides relative to the movable frame 9 in the direction indicated by the arrow g. When the rotary machine frame 8 slides in the lateral direction by a predetermined amount, the switching lever 61 and the switching device 49 return to neutral by releasing the operating force of the switching lever 61, and the rotary machine frame 8 stops sliding. Since the rotary machine frame 8 and the movable frame 9 are fixed, it is only necessary to lower it as it is and start tilling.
If the switching lever 61 is held still, the protrusion 74 will come into contact with the lever 73 when it slides to the end.
Return the switching device 49 to neutral. After furrow tilling, if you want to return to the normal state or slide to the opposite side, operate the switching lever 61 in the opposite direction.
As shown in the figure, the friction ring 52 may be brought into pressure contact with the friction surface 50b on the outer peripheral side of the friction ring 50. In this way, by operating the switching lever 61, the rotary machine frame 8 and the movable frame 9 can be easily slid relative to each other by using the power for driving the pawl shaft, and the switching device 49 is a friction type. Therefore, it is possible to absorb the shock during switching and take a half-clutch state.

In addition, although the side drive type was shown in the Example, it is not limited to this.

Further, in the above embodiment, the friction ring 57 is attached to the gear 57.
gears 51a, which rotate integrally with the friction wheels 51, 52, as shown in FIG.
52a is provided, and the gear 57 is provided with the gear 57.
If gears 51a and 52a are provided integrally with gear 57b, slippage can be prevented at this portion, and power can be transmitted quickly.

Further, each of the friction wheels 50, 51, 52, 57a is desirably provided with a lining made of a suitable material on the friction surface side, or may be made entirely of hard rubber or the like.

According to the present invention, the transverse feed mechanism is equipped with a feed screw shaft, and the screw shaft is connected to the transmission shaft in the forward and reverse directions via a switching device, so that the power for driving the pawl shaft is reduced. It can be used to perform lateral feeding operations, and has a simpler structure and lower costs than conventional hydraulic cylinder types. In addition, the switching device is equipped with a friction ring with friction surfaces on the inner and outer peripheries.
Since the swing arm is provided with a friction ring that can freely move toward and away from the inner and outer peripheries of each friction surface, the structure of the switching device itself is relatively compact, and
It is easier to operate when switching than a shift type. In particular, since the friction ring is brought into pressure contact with the friction surface, there is no impact during switching, and the operation is smooth and durability can be improved. Also, since a half-clutched state is obtained, subtle adjustments in lateral movement are also possible.

[Brief explanation of the drawing]

1 to 7 illustrate one embodiment of the present invention, in which FIG. 1 is a partially cutaway side view, and FIG.
The figure is a sectional plan view of the main part, Fig. 3 is an enlarged sectional view of the main part, Fig. 4 is a - arrow view of Fig. 3, Fig. 5 is a - arrow view of Fig. 4, Fig. 6 and FIG. 7 is an explanatory diagram of the operation, and FIG. 8 is a sectional view showing another embodiment. 1... Tractor, 4... Three-point linkage mechanism, 8...
...Rotary machine frame, 9...Movable frame, 10...Rotary tilling section, 15...Support cylinder, 25...Input gear case, 32...Input shaft, 33, 41...Transmission shaft, 44...Transverse feed Mechanism, 47...screw shaft, 49
...Switching device, 50...Friction wheels, 50a, 50b
...Friction surface, 51, 52...Friction ring, 54...Swing arm, 61...Switching lever.

Claims (1)

[Claims] 1 A movable frame equipped with a connecting part and an input gear case is supported so as to be slidable in the horizontal direction between a pair of left and right support cylinders on the upper part of the rotary machine frame, and the input shaft is connected to the claw shaft on the side of one support cylinder. In a sliding rotary device, a transmission shaft for transmitting power is fitted inside, and a transverse feed mechanism is provided on the other support cylinder side to slide the movable frame laterally with respect to the rotary machine frame. The feed mechanism has a screw shaft for forward and reverse rotation, and is provided with a switching device for connecting the screw shaft to the transmission shaft in the forward and reverse directions. A sliding rotary device comprising a pair of friction wheels supported by a moving arm and capable of moving toward and away from each friction surface.