JP2010220480A - Electric farm working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To touch up the operability of tilting or turning a machine body in a walking type electric farm working machine needing to float a farm working apparatus above a ridge by tilting the machine body rearwards at turnaround. <P>SOLUTION: The walking type electric farm working machine 1 is provided with a pair of left and right wheels 3 driven by a motor 5 at the middle position of the machine body 2, a foliage treatment device 8 at the front position of the machine body 2, and a handle 4 that a worker operates at the rear of the machine body 2 while walking. The motor 5 is disposed at the rear position of the machine body 2 rearward from the wheels 3, and a battery 6 for feeding electric power to the motor 5 is disposed at the rear position of the machine body 2 rearward from the motor 5. The battery 6 is used as a counterweight of the foliage treatment device 8. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electric farm machine that is operated by a worker while walking behind the machine body. Specifically, it is a technique applicable to a foliage processing machine, a carrot harvester, a potato planting machine, an onion harvester, and the like.

  Conventionally, an engine is generally used as a driving source of a farm working machine such as a foliage processing machine disclosed in Patent Document 1. However, carbon dioxide discharged by mass consumption of fossil fuels has caused global warming, and defossil fuels and low carbonization are also required in the field of agricultural machines. In recent years, an electric farm machine using a motor as a drive source has been devised, and includes a motor that drives a wheel and a farm work apparatus, a battery that supplies power to the motor, and a controller that controls these.

  By the way, in the walking type farm working machine as described above, for example, when changing the direction and moving to the next fence, it is necessary to incline the machine body to the rear side so that the front farm working apparatus is floated higher than the fence. In this case, the steering wheel is pushed down and the front part of the machine body is directed upward with the wheel as a fulcrum, but the farm work apparatus has a heavy weight and requires considerable force. Therefore, when this is electrified, the operability of tilting and turning of the airframe may be remarkably deteriorated unless the arrangement of the heavy battery and motor is taken into consideration.

  On the other hand, Patent Documents 2 and 3 propose an electric farm machine. These technologies are related to the walk-type tiller, where the power-driven tillage claws are placed at the bottom of the fuselage, the motor is placed at the top of the fuselage, and a small battery that powers the motor is distributed on the top of the fuselage. It is characterized by having arranged. Although these patent documents disclose techniques for distributing small batteries in a distributed manner, this method has a good weight balance, but has a problem that the structure is complicated and the cost is high.

JP 2002-253019 A Japanese Patent No. 4116904 Japanese Patent Laid-Open No. 2008-141992

  The problem to be solved by the present invention is to solve these conventional problems, and in a walk-type electric farm equipment that requires the farm equipment to be lifted from the fence by tilting the machine body to the rear side at the time of turning, the tilt of the machine body And to improve the operability of turning.

The configuration of the present invention that solves this problem is as follows.
1) An operation unit provided with a pair of left and right wheels driven by a drive source at an intermediate position of the machine body, an agricultural work device operated by the drive source at a front position of the machine body, and operated by an operator while walking behind the machine body In a walk-type farm work machine where the machine must be tilted rearward and the front farm work device must be lifted higher than the fence when changing direction, the drive source is a motor powered by a battery. The motor and the battery are arranged at the rear position of the machine body behind the wheel, and the battery is used as the counterweight of the farm work device. 2) The electric farm machine 2) The battery is excluded from the operation unit. The electric farm work machine according to 1), which is arranged at the rearmost position of the machine body, is the electric farm work machine according to 1) or 2), wherein the farm work apparatus is a foliage treatment apparatus.

  According to the present invention, when the direction is changed, the rear part of the machine body is pushed down so that the front farm work apparatus is tilted so as to face upward, and turns and moves in this state. At this time, since a heavy battery and motor are mounted on the rear part of the aircraft, the battery can be used as a counterweight of the farm equipment and requires a small force to push down the rear of the aircraft, making it easy to tilt and turn the aircraft. It becomes.

It is a left view of the electric farm working machine of an Example. It is a left view which shows the state which the electric farm working machine of the Example inclined. It is a left view of the electric farm work machine of the other example of an Example.

  In the present invention, it is preferable to arrange the battery at the rearmost part of the machine body excluding the operation unit, because the moment by the battery can be maximized. Further, it is preferable that a counterweight having a required weight that optimizes the moment is detachably attached to a required portion of the airframe. Embodiments of the present invention will be specifically described below with reference to the drawings.

  The embodiment shown in FIGS. 1 and 2 is an example of an electric foliage processing machine. FIG. 1 is a left side view of the electric farm machine according to the embodiment, and FIG. 2 is a left side view showing an inclined state of the electric farm machine according to the embodiment. In the figure, 1 is an electric farming machine, 2 is a machine body, 3 is a wheel, 4 is a handle, 4a is an operation unit, 5 is a motor, 5a is a transmission device, 6 is a battery, 7 is a controller, 8 is a foliage treatment device, 9 Is a frame and 10 is a bag.

  As shown in FIG. 1, the electric farm working machine 1 of the present embodiment pivotally supports a pair of left and right wheels 3 at the middle lower part of the machine body 2, and attaches a handle 4 obliquely rearward from the middle upper part of the machine body 2. A motor 5 is mounted horizontally on the rear upper part of 2, a battery 6 is mounted on the rear part of the machine body 2, and a controller 7 is attached to the rear lower part of the machine body 2. Further, the foliage treatment device 8 is attached to the front portion of the body 2, and the frame 9 is attached to the front end portion of the body 2.

  The driving force of the motor 5 is transmitted to the wheels 3 through the transmission device 5a. The weight of the battery 6 is about 30 kg, and the weight of the foliage processing apparatus 8 is about 60 kg. The motor 5 has a weight of about 20-30 kg and an output of about 2-3 kW. The foliage treatment device 8 is provided with a plurality of scraping claws that are rotated by a built-in motor symmetrically, and operates by supplying power from the battery 6.

  In this embodiment, the worker walks with the handle 4 behind the machine body 2 and pulls out the foliage while running along the heel 10. When moving to the adjacent ridge 10, as shown in FIG. 2, the handle 4 is pushed down, the machine body 2 is tilted so that the foliage treatment device 8 faces upward, and the lower portion of the foliage treatment device 8 is floated higher than the ridge 10, Turn in the state and move to the next fence 10. At this time, since the heavy battery 6 is mounted on the rear part of the machine body 2, the battery 6 can be used as a counterweight of the foliage treatment device 8 and requires a small force to tilt the machine body 2. The turning operation becomes easy.

  FIG. 3 shows another example of the electric farm machine 1 according to the embodiment. FIG. 3 is a left side view of an electric farm machine according to another example of the embodiment. In this example, the battery 6 is mounted on the rear side of the machine body 2, and the controller 7 is attached to the back of the motor 5. In this example as well, the battery 6 is mounted on the rear part of the machine body 2 in the same manner as in the embodiment, so that the battery 6 can be used as a counterweight of the foliage treatment device 8 and requires a small force when the machine body 2 is tilted. Inclination and turning operations are easy. Other reference numerals and configurations are the same as those in the embodiment.

  The technology of the present invention is used in farm work machines that require the body to be tilted by the operator's power when turning, such as a foliage processing machine that pulls out the foliage on the ground surface before harvesting crops.

DESCRIPTION OF SYMBOLS 1 Electric farm working machine 2 Machine body 3 Wheel 4 Handle 4a Operation part 5 Motor 5a Transmission device 6 Battery 7 Controller 8 Foliage processing device 9 Frame 10 畝

Claims (3)

  A pair of left and right wheels that are driven by a drive source are provided at an intermediate position of the machine body, an agricultural work device that is operated by the drive source is provided at a front position of the machine body, and an operation unit that an operator operates while walking behind the machine body In a walk-type farm work machine that needs to tilt the aircraft to the rear side and lift the front farm work device higher than the fence when changing direction, the drive source is a motor powered by a battery, An electric farm work machine characterized in that the motor and battery are arranged at a rear position of the machine body behind the wheel, and the battery is used as a counterweight of the farm work apparatus.   The electric farm working machine according to claim 1, wherein the battery is disposed at a rearmost position of the machine body excluding the operation unit.   The electric farm work machine according to claim 1 or 2, wherein the farm work apparatus is a foliage treatment apparatus.

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