JPH05336801A - Work-transmission gear of farm maintenance machine - Google Patents

Abstract

PURPOSE:To obtain the subject gear capable of setting a high reduction ratio and of miniaturizing and lightening a farm maintenance machine by equipping the rotary cover with a motor, an operating handle, etc., and rotating the rotary shaft through a specified transmission mechanism. CONSTITUTION:A transmission case 4 is attached to one side part of a rotary cover 6 equipped with a motor (M), an operating handle 7, etc., at the upper peripheral part and a working rotary 5 is mounted at the lower part. The first planetary reduction gear is driven by the motor and a reduction- transmission gear and the second planetary reduction gear are installed between the working rotary and that.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work transmission device for a small managed farm work machine.

[0002]

2. Description of the Related Art In a small managed farm work machine that drives a management work unit using an electric motor, a high speed rotation motor can be obtained by setting a large drive transmission ratio. The work capacity is maintained so that the work load can be sufficiently dealt with.

[0003]

According to the present invention, an electric motor M, an operation handle 7 and the like are attached to an upper outer peripheral portion of the rotary cover 6 which is also driven by the electric motor M on one side thereof. A first planetary speed reducer 1 and a second planetary speed reducer 3 for transmitting a work rotary 5 are provided, and the first planetary speed reducer 1 is provided outside the rotary cover 6.
And a second planetary speed reducer 3 are used to reduce the speed of the transmission, and a transmission case 4 is provided to cover the same.

[0004]

By the electric motor M, the first planetary speed reducer 1, the speed reducer transmission 2, and the second planetary speed reducer 3 are sequentially decelerated and transmitted, and a transmission case for internally mounting these is performed. The work rotary 5 located at the lower end of 4 is transmitted and rotated. Thus, the first planetary speed reducer 1 is provided on the upper electric motor M side of the speed reducer transmission 2 in the transmission case 4, and the second planetary speed reducer 3 is disposed on the lower work rotary 5 side for interlocking. Therefore, the reduction ratio can be set to a large value, the work capacity of the work rotary 5 by the electric motor M can be sufficiently maintained, and the body is composed of the rotary cover 6 itself. Since the electric motor M, the operation handle 7 and the like are attached, a small-sized and lightweight management work machine is obtained.

[0005]

1 to 5, the management work machine is, for example, a medium tillage weeder. The body is composed of a rotary cover 6 made of aluminum die-cast, and an operation handle 7 is attached to the rear of the body, and an electric handle is attached to the upper side. The motor M is mounted, the transmission case 4 is attached to one side, and the work rotary 5 is attached to the lower part. Wheels 8 for movement are rotatably attached to the lower rear portion of the rotary cover 6.

The rotary cover 6 can be separated and joined with the center portion of the lateral width in the left-right direction as a boundary.
Are joined together and bolts are tightened between the tightening ribs 10 formed on the upper surface to form an integral structure. On both left and right ends,
The side wall portion 11 is integrally molded, and has a bearing portion 13 for bearing the rotary shaft 12 of the working rotary 5. One side wall 11
The mounting wall 14 is integrally formed on the upper side of the above, and the transmission case 16 is mounted on the rotary cover 6 side, and the first planetary speed reducer 1 is provided inside. Further, the electric motor M is attached to the transmission case 16, and the motor shaft 17 of the electric motor M is looked into the transmission case 16. At the rear part, a mounting base 18 is integrally formed or mounted, and a battery base 19 for mounting a battery B for electrically driving the electric motor M is provided, and a handle holder 20 for mounting the base of the operation handle 7 projecting to the upper rear part. And a pair of left and right wheels 8 are rotatably mounted on the lower portion.

A detachable transmission case 4 is provided on the outer side of the side wall portion 11, and the planetary shaft 21 of the upper first planetary speed reducer 1 projecting to the outside of the side wall portion 11 and the lower second planetary speed reducer. A chain 23, which is stretched over the sun gear shaft 22 of the device 3, is installed. While the diameter of the sprocket 24 integrated with the planetary shaft 21 is small, the diameter of the sprocket 25 integrated with the sun gear shaft 22 is large to configure the reduction transmission 2.

A transmission case 26 similar to the transmission case 16 is attached to the inside of the side wall 11 to which the transmission case 4 is attached, and the second planetary speed reducer 3 is provided inside and the rotary shaft 12 of the rotary shaft 12 is provided. Bearing one end. The first planetary speed reducer 1 includes a sun gear 27 that is integrally rotated by a motor shaft 17, an internal gear 28 that can rotate about the motor shaft 17, and a planet that meshes between the sun gear 27 and the internal gear 28. This planetary gear 2 is composed of the gear 29 and the input rotation of the motor shaft 17.
The output shaft rotates with deceleration to the planetary shaft 21 having the shaft 9.

The second planetary speed reducer 3 is similar to the first planetary speed reducer 1, and is arranged between the sun gear 30 on the sun gear shaft 22 and the internal gear 31 to rotate together with the rotary shaft 12 and the planetary gear 32. The sun gear shaft 2
The input rotation of 2 is decelerated and the rotary shaft 12 is transmission-rotated. By arranging a tilling claw 33, a weeding claw, a spiral blade rotor, and the like on the rotary shaft 12, it is possible to perform a work for managing a field soil surface such as tilling and weeding.

The grip 34 of the operating handle 7 has a clutch lever 35, a throttle lever 36, a main switch 37 and the like. When the main switch 37 is turned on,
The rotation speed of the electric motor M is controlled by operating the throttle lever 36. 38 is a controller having a microcomputer CPU. Reference numeral 39 is a dome-shaped outer cover that covers the upper parts of the tilling cover 6, the electric motor M, the battery B, etc., and is detachably attached.

In this way, the total weight is approximately 11 kg, the rotary diameter of the working rotary 5 is 170 mm, the plowing depth is 50 mm, and the rotational speed of the electric motor M is 10,000 r.s. p. m, reduction ratio 1 /
A super-compact and lightweight managed farm work machine of about 100 is constructed. In FIG. 6 and FIG. 7, the clutch device by the clutch lever 35 is constructed by inserting and removing the clutch pin 40 between the internal gears 28 and 31 of the first and second planetary speed reducers 1 and 3. , These internal gears 2
By engaging the clutch pins 40 with the teeth 41, 42 on the outer circumferences of the gears 8, 31, to stop the rotation of the internal gears 28, 31, it is possible to perform deceleration transmission. , 42, etc.
The internal gears 28 and 31 are rotatable and cut off transmission. Reference numeral 43 is a wire for operating the clutch pin 40, and 44 is a spring that pulls the clutch pin 40 toward the side where it is removed.

8 and 9, the difference from the above example is that
When the main switch 37 of the electric motor M is ON, the buzzer 45 is transmitted to ensure safety. In the clutch configuration as described above, when the main switch 37 is ON and the clutch pin 40 is in the disengaged clutch position, the electric motor M is driven, but the work rotary 5 is not driven. It is not transmitted and is idling. At this time, if the clutch pin 40 is operated abruptly, the work rotary 5 is suddenly rotated, which is dangerous. Therefore, when the main switch 37 is ON, the buzzer 45 is turned on.
To call your attention. When the clutch pin 40 is turned on and off by the clutch lever 35 and is being transmitted to the work rotary 5, the clutch switch 46 provided on the grip 34 is pushed by the clutch lever 35 to be turned on, so that the buzzer 45 sounds. Stops (Fig. 9).

10 and 11, the difference from the above example is that the electric motor M is provided with a motor brake MB,
The electric current from the electric motor M is configured to charge the battery B through the controller 47. As the motor brake MB, left and right wheels 48 and 49 having a diameter larger than the rotation diameter of the working rotary 5 are detachably attached to the outer ends of the sun gear shaft 22 and the rotary shaft 12 with pins 50 or the like. From the shaft 12, gears 51,
The ratchet 55 is attached to the shaft 54 that rotates at an increased speed via 52 and 53.
It is driven to one end of the motor shaft 17 of the electric motor M via.

The main switch 37 is turned on, the clutch lever 35 is released, the clutch pin 40 is removed, and the clutch is disengaged.
When 9 is rotated to ground, the shaft 54 rotates via the gears 51, 52, 53, and the electric motor M via the ratchet 55.
, And the battery B is charged via the controller 47.

[Brief description of drawings]

FIG. 1 is an overall side view.

FIG. 2 is a perspective view.

FIG. 3 is a partial exploded perspective view.

FIG. 4 is a plan view of a rotary cover part showing a partial rear surface.

FIG. 5 is a transmission mechanism diagram.

FIG. 6 is a transmission mechanism diagram of another embodiment.

FIG. 7 is a side view thereof.

FIG. 8 is a transmission mechanism diagram of another embodiment.

FIG. 9 is a control flowchart thereof.

FIG. 10 is a transmission mechanism diagram of another embodiment.

FIG. 11 is a control flowchart thereof.

[Explanation of symbols]

 1 First Planetary Reduction Gear 2 Reduction Gear Transmission 3 Second Planetary Reduction Gear 4 Transmission Case 5 Working Rotary 6 Rotary Cover 7 Operation Handle M Electric Motor

Claims (1)

[Claims] 1. A first planetary speed reducer 1 driven by the electric motor M on one side of a rotary cover 6 which also mounts an electric motor M, an operation handle 7 and the like on an upper outer peripheral portion and also serves as a body, and work. A second planetary speed reducer 3 for transmitting the rotary 5 is provided, and a speed reducer transmission 2 for reducing speed between the first planetary speed reducer 1 and the second planetary speed reducer 3 is provided outside the rotary cover 6. , And a work transmission device for a managed farm work machine, which is provided with a transmission case 4 for covering the same.