JPH082036Y2 - Cultivator circuit - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a rotating device of a cultivator, which is configured to perform a rotating operation of a cultivating machine by an intermittent operation of a side clutch, and particularly to a rotating machine of the cultivating machine. The present invention relates to a cultivating device for a cultivator capable of easily rotating a vehicle body by rotating a wheel on the inside of the traveling wheel in a reverse direction with respect to a traveling direction of the vehicle body when a side clutch on the traveling side is disengaged during traveling.

[Conventional technology]

Conventionally, in a cultivator configured to cultivate a field with a tilling part provided at the rear part of the machine body while gripping the operation handle extending toward the upper rear of the machine body, the cultivator is provided on the operation handle at the time of traveling the machine body. By operating the side clutch lever, the side clutch on the traveling side is switched to the "disengaged" state to stop the rotation drive of the traveling inner wheels, and the aircraft is rotated by rotating the outer wheels and lifting the tillage section. It is known that the rotary operation of the rotary of the plowing section is stopped in association with the lifting operation of the plowing section so as to ensure the safety during the traveling of the airframe.

However, this one is configured to electrically and mechanically detect the tilting state of the aircraft due to the lifting operation to stop the tillage rotary, or to interlock the tiller rotary clutch in conjunction with the on / off operation of the side clutch lever. "
Since it is configured to switch to the state, the former one has a drawback that the tilt detection of the aircraft is uncertain and the safety is lacking, and the latter one has the direction of traveling the aircraft when traveling straight ahead. Due to the correction, even when the side clutch lever was turned on and off, the rotary clutch of the tilling section was switched to the "disengaged" state each time, and the work efficiency was significantly reduced. .

[Problems to be solved by the present invention]

The present invention has been made in view of the above circumstances to solve the conventional drawbacks, and its purpose is to interlock with the "disengagement" operation of the side clutch lever when the aircraft is traveling. By further rotating the rotated lift lever, the rotating inner side wheels are reversely rotated through the reverse rotation drive clutch mechanism to reduce the tilling part lifting force, and the inner side wheels are rubbed by the rotating outer side wheels. It is possible not only to effectively reduce the turning radius of the airframe and to efficiently perform the plowing work for adjacent plowing, but also to rotate the plowing section rotary in conjunction with the rotation operation of the lift lever. Make sure to stop it, and also to prevent reverse rotation of the inner wheel during rotation by rotating the lift lever during high-speed traveling,
It is intended to provide a traveling device of a cultivator capable of performing safe and smooth cultivating work.

[Means for solving the problem]

In order to solve the problem, the technical means adopted by the present invention is that a drive shaft for transmitting an engine output is provided with a reverse drive clutch mechanism, and a transmission shaft provided at an intermediate position from the drive shaft to the axle is provided with a side shaft. A side clutch mechanism that interlocks with the operation of the clutch lever is provided, and the reverse rotation drive clutch mechanism and the side clutch mechanism are interlocked and coupled through a reverse rotation drive sprocket pivotally mounted on a transmission shaft, and the reverse rotation drive clutch mechanism is turned on and off. One end of the rotating arm is connected to a lift lever that rotates in tandem with the on / off operation of the side clutch lever, and the other end of the rotating arm is connected to the tiller rotary clutch mechanism. When the side clutch lever is operated, it is connected to a fixed reverse rotation switching regulation mechanism and lifts only when the speed change lever is in the low speed position. In conjunction with the reverse drive clutch mechanism "cored" operation by the bar and is characterized by being configured to be switchable to the tilling unit rotary clutch mechanism from the "cored" state to the "off" state.

[Function of device]

Therefore, according to the present invention, when the lift lever lift lever that is rotated in association with the operation of the side clutch lever is further rotated when the aircraft is traveling, the rotating arm that operates in conjunction with the lift lever operates the reverse drive clutch mechanism. Since the wheel on the inner side of the rotation is rotated in the reverse direction as the entry, the operation for traveling the body becomes easy, and the burden on the operator can be reduced. The reverse rotation drive clutch mechanism The interlocking operation of the reverse rotation drive clutch mechanism enables the rotary tillage section rotary clutch mechanism to be in the "disengaged" state to stop the rotation of the tillage section rotary. Since the mechanism cannot be "entered", it is possible to always perform highly safe tilling work.

〔Example〕

The configuration of the present invention will be described in detail with reference to an embodiment shown in the drawings.

In FIG. 1, 1 is a cultivator, and the cultivator 1
Is equipped with an engine 2 at the front and a rear part of a body frame 4 having a mission case 4a that pivotally supports left and right wheels 3a and 3b, and a cultivating part 5 pivotally supporting a tail wheel 5a and a cultivating claw 5b. Further, a driving operation handle 7 in which a speed change lever 6 is arranged in parallel is extended from the machine body frame 4 rearward and upward.

As shown in FIG. 2 to FIG. 4, transportation containers 8a, 8b are slidable laterally with respect to the traveling direction of the cultivator 1 via sliding guides 9a, 9b on the upper surface of the cultivating part 5. The rubber plate 10a, which is placed and covers the rear wall of the tilling part 5,
10b is suspended, and a rubber plate support frame 10c formed in a U-shape is obliquely provided rearward and downward at the upper end of the rubber plate 10a.

Further, the tail wheel 5a is pivotally supported on the lower end of the tail wheel inner cylinder 12 inserted into the tail wheel outer cylinder 11 and the upper end of the tail wheel outer cylinder 11 as shown in FIGS. The tail wheel elevating lever 12a and the clamp lever 12b provided on the rear wheel are configured to be vertically movable and fixed, and the tail wheel outer cylinder 11 has a step
The step arm 13 on which the 13a is placed is attached via a detachable portion 13b which can be fixed up and down, and the detachable portion 13b is fixed to the tail wheel outer cylinder 11 so that the tail wheel outer cylinder 11 It is also used as a stopper to prevent slipping off.

The left and right wheels 3a and 3b are, as shown in FIGS. 6 to 7, axles 17, 1 via a drive shaft 14, a side clutch mechanism 15 and a secondary transmission mechanism 16 for transmitting a drive output of the engine 2.
It is rotatably supported by 7, and is configured to carry out the vehicle body rotation by grasping operation of the side clutch levers 18 and 19 mounted on the driving handle 7.

That is, the side clutch mechanism 15 includes the transmission gear 21 provided on the transmission shaft 20 and having the clutch engagement portions 21a and 21b.
And the reverse clutch transmissions 22 and 23 and the side clutch gears 24 and 25 respectively forming the reverse clutch engaging portions 22a and 23a, and the side clutch gears 24 and 25 are normally connected to the clutch engaging portion 21a side of the transmission gear 21 and the side clutch gears 24 and 25. In order to mesh with the 21b side, it is pivotally mounted so as to be slidable in the axial direction via coaxially mounted urging ammunition machines 26 and 27, and a reverse drive sprocket 28 is coaxially attached to one end of the transmission shaft 20. Has been inserted into.

On the inner peripheral surfaces of the side clutch gears 24, 25, switching control bodies 29, 30 around which shift grooves 29a, 30a are provided are fitted, and shifters 31a, 31b engaged with the shift grooves 29a, 30a. As shown in FIG. 7 (b), the shifter arms 32, 33 provided with are pivotally attached to the shifter arm shafts 34, 35, and the one end portions 32a, 33a of the shifter arms 32, 33 are Connected to the side clutch levers 18 and 19 via the side clutch wires 32b and 33b, respectively, and by grasping the side clutch levers 18 and 19, the side clutch gears 24 and 25 are slid in the axial direction to move the machine body. It is configured to go round.

A reverse drive clutch mechanism 39 including a sprocket 36, a planetary gear mechanism 37, and a brake drum 38 is coaxially attached to the tip of the drive shaft 14, and a side mission that covers the reverse drive clutch mechanism 39. The rotation of the rotation arm 40 pivotally supported on the side surface of the case 4b stops the rotation of the brake drum 38, and the sprocket 36 is rotationally driven by the rotation drive of the planetary gear mechanism 37, and the reverse rotation drive is performed via the reverse rotation drive chain 41. It is configured to drive the sprocket 28.

At one end 40a of the rotating arm 40, the other ends of lift wires 43a and 43b, one end of which is connected to lift levers 42a and 42b to be described later, are connected rings 44a and 44 in which elongated connecting holes are formed.
is connected to the connecting pin 40b via b through loose fitting and the other end
40c is connected via a switching wire 45 to a free end portion 47a of a clutch arm 47 that constitutes a tillage portion rotary clutch mechanism 46 described later. The cultivating section rotary clutch mechanism 46 includes a rotary transmission gear 49 and a rotary drive shaft.
Clutch gear 50 fitted in 48 and having a meshing portion 50a formed
Is fitted to the rotary drive shaft 48 so as to be slidable in the axial direction, and a shift groove 50b is provided around the clutch gear 50.
In addition, the shifter 51 coaxially fixed to the clutch arm 47
The clutch gear 50 by the biasing ammunition 52 at all times.
The engaging portion 50a is engaged with the rotary transmission gear 49 to rotationally drive the tilling claw 5b pivotally supported by the rotary shaft 53, and the shift wire 51 is rotated by pulling the switching wire 45. Then, the meshing state between the clutch gear 50 and the rotary transmission gear 49 is released to stop the rotary drive of the rotary tillage claw.

Furthermore, as shown in FIG. 10, the other end of the switching wire 45 connected to the other end 40c of the rotating arm 40 is connected to the base end 58a.
Is connected to the distal end portion 58b of the regulation arm 58 pivotally rotatably attached through a coupling ring 59 in a long hole shape, and the regulation arm 58 is turned to the switching wire 45 side by a bullet 58c. The working blade 6 that is dynamically urged and is coaxially supported by the base end portion 58a.
The reverse rotation switching restricting mechanism 61 is configured by pressing the curved sliding piece 60a of 0 against the speed change lever 6,
It is possible to enable the rotating operation of the rotating arm 40 by the lift levers 42a and 42b only when switching to the low speed e side, and push up the operating blade 60 when switching to the high speed f side of the speed change lever 6, Regulating arm 5 rotated against the bias of the bullet 58c
Since 8 fixes the switching wire 45 in the tensioned state, even if the lift levers 42a and 42b are mistakenly operated, the rotation state of the rotation arm 40 is prohibited by holding the switching wire 45 in the tensioned state,
Switching of the wheels 3a, 3b to the reverse drive is regulated so that sudden turning of the machine body can be prevented in advance.

On the other hand, the other ends of the lift wires 43a, 43b, one end of which is connected to the one end 40a of the rotating arm 40, are integrally formed with the lift levers 42a, 42b as shown in FIGS. 8 (a) and (b). It is connected to the formed arms 54a and 54b, and the arm 5
Interlocking arms 56a, 56b for sandwiching the vicinity of the connection position of the side clutch wires 32b, 33b connected to the side clutch levers 18, 19 are coaxially attached to the pivot shafts 55, 55 for pivotally attaching the 4a, 54b. There is. Further, the above-mentioned arms 54a and 54b and the interlocking arm 56
Ammunition machines 57a and 57b are sandwiched between the opposite side surfaces of a and 56b, respectively, and the lift levers 42a and 42b are moved from the point a to the point b by interlocking with the "disengagement" operation of the side clutch levers 18 and 19. It is configured to rotate to a point. The other end 40c of the rotating arm 40 is connected to the tiller rotary clutch mechanism 4
The switching wires 45 connected to the clutch arm 47 of 6 and the restriction arm 58 of the reverse rotation switching restriction mechanism 61 may be provided with two separate wires, or may be branched into two forks. .

In the above-mentioned configuration, when performing the leftward rotation of the machine body during the plowing work, as shown in FIG. 9, first, grasp the side clutch lever 19 inside the circulation and pull the side clutch wire 33b. As shown in FIG. 7 (b), the shifter arm 33 is rotated in the direction of arrow A, and the side clutch gear 25 is slid away from the clutch meshing portion 21b of the transmission gear 21 to the reverse transmission gear 23 side. The side clutch mechanism 15 is switched from the "engaged" state to the "disengaged" state. At this time, by pulling the side clutch wire 33b, the interlocking arm 56b also rotates in the pulling direction of the side clutch wire 33b with the pivot 55 as the fulcrum, and the arm 54b rotates via the ammunition 57b, so that the lift lever The 42b rotates from the steady position a point to the b point, and the lift wire 43b connected to the lift lever 42b is also pulled along with the rotation.
Is connected to the rotating arm 40 via a connecting ring 44b formed in the shape of an elongated hole, the rotating arm 40 does not rotate at this point, and therefore, the reverse drive clutch mechanism is used.
39 remains held in the "cut" state.

After that, when the lift lever 42b is further rotated to the point c, the side clutch gear 25 slides to the reverse clutch engaging portion 23a side of the reverse rotation transmitting member 23, and the reverse clutch engaging portion 2
The side clutch gear 25 meshes with the 3a and holds the left wheel 3b in the reverse drive standby state via the reverse drive sprocket 28. Next, when the lift lever 42b is gradually rotated to the point d, the lift wire 43b is further pulled and the rotating arm 40 is rotated via the connecting ring 44b, so that the drive shaft 14 is idling. The rotation of the brake drum 38 is gradually stopped, the planetary gear mechanism 37 starts the planetary rotation drive, and the sprocket 36 and the reverse rotation drive chain are started.
The reverse drive sprocket 28 is reversely driven via 41, and the reverse drive force is transmitted to the side clutch gear 25, so that the left wheel is driven.
3b is in the reverse rotation state via the secondary transmission mechanism 16.

Further, at the same time, the switching wire 45 connected to the other end 40c of the rotating arm 40 is pulled by the rotating operation of the rotating arm 40 to the position d, and the clutch arm of the tiller rotary clutch mechanism 46 is pulled. As 47 rotates, the shifter 51 also rotates and slides the clutch gear 50 in the direction of arrow B of the rotary drive shaft 48, and the above-mentioned tiller rotary clutch mechanism 46 is in the “disengaged” state, and the tiller claw 5b is rotated. The rotation is stopped, and it is possible to ensure the safety of the worker when the aircraft is traveling. And even if you operate the lift levers 42a, 42b at high speed,
Since the rotating arm 40 does not rotate, the left wheel 3b does not rotate in the reverse direction.

Next, when the above-described machine traveling operation is finished and the cultivator 1 is returned to the straight traveling state, the lift lever 42b held at the point d is returned to the point c, and the rotating arm 40 fixes the brake drum 38 to the fixed state. Is released to stop the rotation drive of the sprocket 36 of the reverse rotation drive clutch mechanism 39. At the same time, the tension of the switching wire 45 connected to the other end 40b of the rotating arm 40 is also released, and the shifter 51 of the tiller rotary clutch mechanism 46 causes the biasing force of the biasing ammunition 52 via the clutch arm 47. The clutch gear 50 is slid to the rotary transmission gear 49 side by the above, the meshing portion 50a of the clutch gear 50 meshes with the rotary transmission gear 49, and the cultivating section rotary clutch mechanism 46 is in the "engaged" state and the cultivating pawl. The rotation drive of 5b will be restarted.

Then, when the lift lever 42b is further returned to the point b, the side clutch gear 25 disengages from the reverse clutch engaging portion 23a of the reverse rotation transmission body 23 and slides to the transmission gear 21 side by the urging force of the urging ammunition 27. The side clutch gear 25 is meshed with the clutch meshing portion 21b, the left wheel 3b is returned to the rotational traveling state in the same direction as the right wheel 3a via the secondary transmission mechanism 16, and is rotated by the traveling of the aircraft. It is possible to smoothly and surely perform the reverse driving of the inner wheels and the driving and stopping of the tiller 5.

[Effect of device]

In essence, the present invention provides a drive shaft for transmitting engine output with a reverse drive clutch mechanism, and a transmission shaft provided at an intermediate position from the drive shaft to the axle to a side clutch that is interlocked with the operation of the side clutch lever. A mechanism is provided to interlock the reverse rotation driving clutch mechanism and the side clutch mechanism via a reverse rotation driving sprocket pivotally mounted on a transmission shaft, and one end of a rotating arm for turning on and off the reverse rotation driving clutch mechanism is connected to a side clutch lever. It is connected to a lift lever that rotates in conjunction with the on / off operation of, the other end of the rotating arm is connected to the tiller rotary clutch mechanism, and it is also connected to the reverse rotation switching restriction mechanism that is fixed by the shift lever in the high speed position. Then, when operating the side clutch lever,
Only when the speed change lever is in the low speed position, the above-mentioned tillage part rotary clutch mechanism can be switched from the "engaged" state to the "disengaged" state in conjunction with the reverse drive clutch mechanism "engaged" operation by the lift lever. While the machine is traveling, the wheel on the inside of the circuit can be reversely rotated by the rotation operation of the lift lever to reduce the radius of the machine traveling, while the reverse rotation switching regulation mechanism linked to the rotation operation of the lift lever cultivates. It is possible to reliably stop the rotary drive of the rotary section, and even when trying to operate the lift lever at high speed, the lift lever is restricted by the reverse rotation switching restriction mechanism and does not rotate. It is possible to always ensure the safety of work without rotating it in the reverse direction and to perform smooth and reliable plowing work.

[Brief description of drawings]

The drawings show an embodiment of a rotating device for a cultivator according to the present invention. FIG. 1 is an overall side view of a cultivator equipped with the rotating device according to the present invention, and FIG. 6 is an explanatory view of the operation of the main part, FIG. 7 (a) is a side view of the main part showing the interlocking relationship with the tilling part rotary clutch mechanism, and FIG. 7 (b) is the same operation explanatory view as the above, FIG. 8 (a) ) To (b) are explanatory views of a main part showing the interlocking state of the side clutch lever and the lift lever, FIG. 9 is an explanatory view of the same as above, and FIG. 10 is an explanatory view of the operation of the reverse rotation switching restricting mechanism. In the figure, 1 ... cultivator, 6 ... transmission lever, 14 ... drive shaft, 15 ...
… Side clutch mechanism, 18,19 …… Side clutch lever, 20 …… Transmission shaft, 21a, 21b …… Clutch engagement part, 22,23
...... Reverse rotation transmission, 22a, 23a …… Reverse rotation clutch meshing part, 24,
25 …… Side clutch gear, 28 …… Reverse rotation drive sprocket, 39 …… Reverse rotation drive clutch mechanism, 40 …… Rotating arm,
42a, 42b ... lift lever, 46 ... tilling part rotary clutch mechanism, 61 ... reverse rotation switching restriction mechanism.

Claims (1)

[Scope of utility model registration request] 1. A drive shaft for transmitting engine output is provided with a reverse rotation drive clutch mechanism, and a transmission shaft provided at an intermediate position from the drive shaft to the axle is provided with a side clutch mechanism interlocked with operation of a side clutch lever. The reverse drive clutch mechanism and the side clutch mechanism are interlocked and connected via a reverse drive sprocket pivotally mounted on a transmission shaft, and one end of a rotating arm for turning the reverse drive clutch mechanism on and off is connected to a side clutch lever. It is connected to a lift lever that rotates in conjunction with the cutting operation, the other end of the rotating arm is connected to the tilling part rotary clutch mechanism, and it is also connected to a reverse rotation switching restriction mechanism that is fixed by the speed change lever at the high speed position. , When operating the side clutch lever, only when the speed change lever is in the low speed position In conjunction with the operation, the tilling unit rotary clutch mechanism tiller times line device characterized by the switchably configured from the "filled" state to the "off" state.