Working machine and umbrella holder for working machine

Abstract

A walking-type working machine including: a machine body 100; and a protection member holder 40 for holding a protection member 101 for protecting an operator from above.

Description

Work machine and umbrella holder for work machine

[0001] The present invention relates to a work machine and an umbrella holder for a work machine.

[0002] A known example of a walk-behind rice transplanter is disclosed in Patent Document 1. With a walk-behind rice transplanter, an operator holds a handle provided at the rear of the machine and operates the walk-behind rice transplanter while walking, thereby planting seedlings in a field.

[0003] Japanese Patent Application Publication No. 2017-112879

[0004] With the walk-behind rice transplanter described above, there is nothing to block sunlight or rain, which can be a burden to the operator.

[0005] The present invention aims to reduce the burden on operators in working machines such as walk-behind rice transplanters.

[0006] The walk-behind working machine of the present invention includes a machine body and a protective member holder that supports a protective member that protects an operator operating the machine body from above.

[0007] With the above configuration, the protective member can be held on the walk-behind working machine, and the protective member can prevent sunlight and rain from hitting the worker, thereby reducing the burden on the worker.

[0008] In the above configuration, it is preferable that the device further includes a handle provided at the rear of the body, and the protection member holder is attached to the handle.

[0009] By attaching the protective member holder to the handle that is held by the operator, the protective member can be conveniently positioned above the operator's head.

[0010] In the above configuration, it is preferable that the machine is provided with a seedling planting device for planting seedlings in a field, the seedling planting device being provided at the rear of the machine body and in front of the handle, having a seedling tray on which the seedlings are placed, and a seedling tray support frame for supporting the seedling tray, and the protective member holder being attached to the seedling tray support frame.

[0011] With the above-described configuration, the protective member holder is attached to at least two locations on the handle and the seedling tray support frame, thereby enabling the protective member holder to be securely attached to the machine body.

[0012] In the above configuration, it is preferable that the protective member holder has a tubular member having a first portion extending rearward from the aircraft body and a second portion extending upward from the rear end of the first portion, and that the handle of the protective member be inserted into the second portion.

[0013] With the above-described configuration, the handle of the protection member can be suitably held by the simple configuration of the cylindrical member.

[0014] In the above configuration, it is preferable that the machine is provided with a handle provided at the rear of the machine body and a seedling planting device for planting seedlings in a field, the seedling planting device being provided at the rear of the machine body and in front of the handle, having a seedling tray on which the seedlings are placed, and a seedling tray support frame for supporting the seedling tray, and the protective member holder having a first mounting portion provided at the middle of the second part in the vertical direction and attached to the handle, and a second mounting portion provided at the tip of the first part and attached to the seedling tray support frame.

[0015] With the above-mentioned configuration, the protective member holder is attached to at least two locations on the handle and the seedling tray support frame, which allows the umbrella holder to be securely attached to the machine body.

[0016] In the above configuration, it is preferable that a stopper means for preventing the handle inserted into the second part from coming out of the second part is provided at a vertical midpoint of the second part.

[0017] With the above configuration, the handle of the protective member can be prevented from slipping out of the second portion, and the protective member can be reliably held.

[0018] In the above configuration, it is preferable that the angle formed between the first portion and the second portion is set to be smaller than 90 degrees.

[0019] Generally, when a walk-behind work machine is equipped with a seedling tray, the seedling tray is inclined so that the upper part is positioned further back. When a protective member holder (second mounting portion) is attached to the seedling tray support frame that supports the seedling tray, the first portion of the tubular member tends to be inclined so that the lower part is positioned further back. Therefore, by making the angle between the first portion and the second portion less than 90 degrees, the rearward inclination of the second portion is reduced (the second portion is positioned closer to vertical), allowing the protective member to be positioned optimally above the operator's head.

[0020] Preferably, the protective member is an umbrella in use.

[0021] With the above configuration, it is possible to prevent sunlight and rain from hitting the worker when the umbrella is in use.

[0022] The working machine of the present invention includes a machine body, a protective member holder having an attachment part that can be attached to at least one of an operation panel, a main step, a fertilization frame that supports a fertilization device, and an antenna frame that supports a receiving antenna of a satellite positioning device, which are provided on the machine body, and a protective member supported by the protective member holder and that protects a crew member on the machine body from above.

[0023] The above configuration provides a protective member that protects the crew from above on board the vehicle, thereby preventing sunlight and rain from hitting the workers, thereby reducing the burden on the crew.

[0024] The umbrella holder of the present invention is an umbrella holder for a walk-behind working machine, and comprises a holding part for holding the handle of an umbrella in use, and an attachment part for attachment to the side of the machine body.

[0025] With the above configuration, the umbrella can be held in use on the walk-behind working machine, preventing sunlight and rain from hitting the worker through the umbrella, thereby reducing the burden on the worker.

[0026] Fig. 1 is an overall side view of a walk-behind rice transplanter. Fig. 2 is a side view of a main part of the walk-behind rice transplanter. Fig. 3 is a perspective view of a main part of the walk-behind rice transplanter. Fig. 4 is a side view of a working machine of another embodiment. Fig. 5 is a front view of a working machine of another embodiment.

[0027] Fig. 1 is a side view of a walk-behind rice transplanter, which is an example of a walk-behind working machine. Fig. 2 is a side view of the main parts of the walk-behind rice transplanter. Fig. 3 is a perspective view of the main parts of the walk-behind rice transplanter. In each figure, F indicates the front direction, B indicates the rear direction, U indicates the up direction, D indicates the down direction, R indicates the right direction, and L indicates the left direction.

[0028] The overall configuration of the walk-behind rice transplanter will be described with reference to Figure 1. A transmission case 1 is provided in the center of the front of the machine body, and an engine 3 is supported on an engine frame 2 connected to the front of the transmission case 1. A machine frame 4 is connected to the rear of the transmission case 1 and extends rearward. A seedling planting device 5 and a handle 6 are connected to the rear of the machine frame 4. A spare seedling tray 15 is supported on the machine frame 4. In other words, the machine body 100 is made up of the transmission case 1, engine frame 2, engine 3, machine frame 4, handle 6, etc. In addition, an umbrella holder 40 (an example of a "protective member holder") is provided on the handle 6 to hold an umbrella (an example of a "protective member") in use (open state).

[0029] As shown in Figure 1, a right (left) support case 7 is supported for vertical swing around a horizontal axis P1 in the left-right direction on the right (left) part of the transmission case 1 and extends rearward. A right wheel 8 (axle 8a) for running is rotatably supported on the right part of an axle case 7a at the rear of the right support case 7, and a left wheel 8 (axle 8a) for running is rotatably supported on the left part of the axle case 7a at the rear of the left support case 7. The transmission also includes a center float 9 and left and right side floats 10.

[0030] The seedling planting device 5 includes a feed case, a planting case, a planting arm, and a seedling tray 14, etc.

[0031] 1 and 2, a pair of left and right support frames 17 are connected to the rear end of the body frame 4. The left and right support frames 17 extend rearward and upward from the rear end of the body frame 4.

[0032] 2 and 3, seedling tray support frames 18 extending in the width direction of the machine body are supported at the midpoints of the left and right support frames 17. The seedling tray support frames 18 support the seedling trays 14 so that they can slide in the width direction (left and right direction) of the machine body.

[0033] A handle 6 is supported on the upper end of the support frame 17. The handle 6 has left and right grip portions 61 and an intermediate portion 62 connecting the left and right grip portions 61. The intermediate portion 62 is connected to the upper end of the support frame 17, and the grip portion 61 extends rearward from the intermediate portion 62. The handle 6 is formed, for example, by bending a pipe member, and a grip member made of, for example, resin is fitted onto the portion of the pipe member corresponding to the grip portion 61.

[0034] As shown in Figure 2, the operation panel 20 is supported on the middle portion 62 of the handle 6. The operation panel 20 is provided so that the left-right center of the operation panel 20 is located to one side of the left-right center of the middle portion 62 in the left-right direction. In this embodiment, the left-right center of the operation panel 20 is provided to the right. The operation panel 20 is provided with various lever operating devices for operating the walk-behind rice transplanter. In this embodiment, three lever operating devices, lever 21a, lever 21b, and lever 21c, are provided.

[0035] As shown in Figure 3, the umbrella holder 40 is supported by the middle portion 62 of the handle 6. The umbrella holder 40 is supported on the side opposite the middle portion of the operation panel 20 in the left-right direction (in this embodiment, the part to the left of the middle portion 62 in the left-right direction) from the side where the middle portion of the operation panel 20 is located, rather than the center of the middle portion 62. In this embodiment, the umbrella holder 40 is also supported by the seedling tray support frame 18.

[0036] 2 and 3, the umbrella holder 40 has a tubular member 41. The tubular member 41 is curved to have a first portion 41a extending rearward from the machine body and a second portion 41b extending upward from the rear end of the first portion 41a. A first attachment portion 42 for attaching the umbrella holder 40 to the handle 6 is provided at the vertical midpoint of the second portion 41b. A second attachment portion 43 for attaching the umbrella holder 40 to the seedling tray support frame 18 is provided at the front end of the first portion 41a.

[0037] The first mounting portion 42 is formed by bending a resilient plate member such as metal. The portion of the first mounting portion 42 that is attached to the handle 6 has a C-shape. A bolt hole is provided at one end of the C-shape. When a bolt 42 a and a nut 42 b are fastened across the hole, the C-shape is elastically deformed, and the first mounting portion 42 is fixed to the handle 6.

[0038] The second mounting portion 43 is formed by bending a resilient plate member such as metal. The attachment point of the second mounting portion 43 to the seedling tray support frame 18 has an N-shape that opens downward. Holes are provided at the ends of the N-shape. By fastening bolts 43a and nuts 43b across the holes, the N-shape is elastically deformed, and the second mounting portion 43 is fixed to the seedling tray support frame 18.

[0039] As shown in Figure 2, the angle α between the first portion 41a and the second portion 41b of the tubular member 41 is set to be less than 90 degrees. Generally, in a walk-behind rice transplanter, the seedling tray 14 is tilted so that its upper portion is positioned further rearward. When the second mounting portion 43 is attached to the seedling tray support frame 18, the first portion 41a of the tubular member 41 tends to tilt so that its lower portion is positioned further rearward. Therefore, by making the angle α between the first portion 41a and the second portion 41b less than 90 degrees, the rearward tilt of the second portion 41b is reduced (the second portion 41b is positioned closer to vertical), allowing the umbrella 101 to be positioned above the operator's head.

[0040] The handle 101a of the umbrella 101 is inserted into the second part 41b. A knob bolt 44 (corresponding to the "prevention mechanism" of the present invention) is provided in the vertical midpoint of the second part 41b. By inserting the handle 101a of the umbrella 101 into the second part 41b and tightening the knob bolt 44, the knob bolt 44 comes into contact with the handle 101a of the umbrella 101, thereby holding the handle 101a of the umbrella 101 inside the second part 41b. In this way, the second part 41b and the knob bolt 44 function as the "holding part" of the present invention.

[0041] As a result, the umbrella 101 in use (open state) is positioned above the handle 6, i.e., above the head of the worker holding the handle 6. The umbrella 101 is not particularly limited, but may be, for example, a parasol, an umbrella, or an umbrella that can be used as both a parasol and an umbrella.

[0042] [Other Embodiments] (1) Although the example has been described in which the umbrella holder 40 is attached to the handle 6 and the seedling tray support frame 18, this is not limited to this. The umbrella holder 40 may be attached to only one of the handle 6 and the seedling tray support frame 18. Furthermore, the umbrella holder 40 may be attached to either one of the handle 6 and the seedling tray support frame 18 and another component on the machine body 100. Furthermore, the umbrella holder 40 may be attached to a component on the machine body 100 other than the handle 6 and the seedling tray support frame 18.

[0043] (2) The means for attaching the umbrella holder 40 to the airframe 100 is not limited to the above. The means for attaching the umbrella holder 40 to the airframe 100 may be other than those described above, such as attachment using a turnbuckle or a knob bolt. Also, for example, the umbrella holder 40 may be fixed to the airframe 100 by welding or the like.

[0044] (3) Although the tubular member 41 has been described as being curved and having the first portion 41 a and the second portion 41 b, the present invention is not limited to this. For example, a tubular member 41 that is not curved may be used, or a tubular member 41 that has been subjected to three-dimensional bending may be used.

[0045] (4) In the above embodiment, a walk-behind rice transplanter has been described as an example of a walk-behind working machine, but the present invention is not limited to this. For example, the walk-behind working machine may be a walk-behind transplanter other than a walk-behind rice transplanter, such as a walk-behind vegetable transplanter. Furthermore, for example, the walk-behind working machine may be a walk-behind working machine other than a walk-behind transplanter, such as a walk-behind cultivator or a walk-behind lawnmower.

[0046] (5) The protective member holder (umbrella holder 40) may be provided not only on walk-behind working machines but also on riding-type rice transplanters and other riding-type working machines. For example, when the protective member holder is provided on a working machine such as a riding-type rice transplanter, the protective member holder may be provided on a fixed member around the steering wheel, an operation panel operated by the driver, a support frame behind the seat such as a seat, a main step, or a fertilizer application frame, or a support frame 201 on which the receiving antenna 200 of the satellite positioning device is supported. The receiving antenna support frame 202 is provided above the vehicle body. Its purpose is to protect the operator, but multiple protective member holders may also be provided when an assistant operator is on board. In the example shown in FIGS. 4 and 5 , the umbrella holder 40 (an example of a "protective member holder") is supported on the receiving antenna support frame 202 on which the receiving antenna 200 of the satellite positioning device is supported, and an umbrella 101 (an example of a "protective member") is provided on the umbrella holder 40.

[0047] (6) Although the description has been given using an umbrella 101 as an example of a protective member, the protective member is not limited to an umbrella. Instead of the umbrella 101, other protective members may be attached to the protective member holder to achieve the same effect. For example, the protective member may be a canopy or a simple cabin. The canopy here protects the worker from rain, wind, and sunlight from above or from a certain angle, while the simple cabin is assumed to have a shape that covers at least four sides: the front, left, right, and top. Both are assumed to be supported from the same mounting position as the umbrella 101 supported by the umbrella holder 40 described above.

[0048] The present invention is not limited to walk-behind rice transplanters and other walk-behind work machines, but can also be applied to ride-on rice transplanters, ride-on seed sowing machines, and other work machines.

[0049] 40 Umbrella holder (protective member holder) 41 Cylindrical member 42 First mounting portion 42 Second mounting portion 100 Machine body 101 Umbrella (protective member)

Claims

1. A walk-behind working machine comprising: a machine body; and a protective member holder that supports a protective member that protects a worker operating the machine body from above.

2. A walk-behind working machine according to claim 1, further comprising a handle provided at the rear of the machine body, and the protective member holder is attached to the handle.

3. A walk-behind working machine as described in claim 2, comprising a seedling planting device for planting seedlings in a field, the seedling planting device being provided at the rear of the machine body and in front of the handle, having a seedling tray on which the seedlings are placed, and a seedling tray support frame for supporting the seedling tray, and the protective member holder being attached to the seedling tray support frame.

4. A walk-behind working machine as claimed in any one of claims 1 to 3, wherein the protective member holder has a tubular member having a first portion extending rearward from the machine body and a second portion extending upward from the rear end of the first portion, and the handle of the protective member is inserted into the second portion.

5. A walk-behind working machine as described in claim 4, comprising: a handle provided at the rear of the machine body; and a seedling planting device for planting seedlings in a field, the seedling planting device being provided at the rear of the machine body and in front of the handle and having a seedling tray on which the seedlings are placed; and a seedling tray support frame for supporting the seedling tray; and the protective member holder having a first attachment part provided at the vertical midpoint of the second part and attached to the handle, and a second attachment part provided at the tip of the first part and attached to the seedling tray support frame.

6. A walk-behind working machine as described in claim 5, further comprising a stopper means at the midpoint of the second part in the vertical direction to prevent the handle inserted into the second part from slipping out of the second part.

7. A walk-behind working machine according to any one of claims 4 to 6, wherein the angle formed between the first portion and the second portion is set to be smaller than 90 degrees.

8. A walk-behind working machine according to any one of claims 1 to 7, wherein the protective member is an umbrella in use.

9. A work machine comprising: a machine body; a protective member holder having an attachment portion that can be attached to at least one of an operation panel, a main step, a fertilization frame that supports a fertilization device, and an antenna frame that supports a receiving antenna of a satellite positioning device, which are provided on the machine body; and a protective member that is supported by the protective member holder and protects a crew member on board the machine body from above.

10. A work machine according to claim 9, wherein a plurality of the protection member holders are provided.

11. An umbrella holder for a work machine, comprising: a holding portion for holding the handle of an umbrella in use; and an attachment portion for attachment to the side of the machine body.

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