JP2022034318A - Riding type mower - Google Patents

Abstract

To provide a riding type mower that allows a space between right and left rear wheels below a machine body to be used more effectively.SOLUTION: A machine body frame is provided, which is supported by a right and left pair of front wheels 11, and a right and left pair of rear wheels 12. A rear discharge type mower 4 can be disposed below the machine body frame and in an interval in a front-rear direction between the front wheels 11 and the rear wheels 12. A tool box 5 is provided behind the mower 4 and between the right and left pair of the rear wheels 12.SELECTED DRAWING: Figure 1

Description

The present invention relates to an improvement of a passenger-type mower in which a rear discharge type mower device for cutting grass, weeds, etc. can be deployed in a state where it is located within a distance between front and rear wheels in the front-rear direction.

In this type of passenger-type mower, the grass discharged backward from the rear discharge type mower device is discharged backward through between the left and right rear wheels, and is a high-dump type grass collecting container or a low-dump type grass collecting machine. It is configured to be housed in a container (see, for example, Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2008-278820 (see paragraph numbers "0024" and "0025", FIGS. 1 and 2). Japanese Unexamined Patent Publication No. 2010-252741 (see paragraph numbers "0014", "0034", "0035", FIGS. 9 to 11).

As described above, in the case of a structure in which the grass is discharged backward through between the left and right rear wheels and housed in a high-dump type grass collection container or a low-dump type grass collection container, it is easy to efficiently collect the grass. It is useful in.
However, when the traveling machine is used without or with such a high dump type grass collecting container or a low dump type grass collecting container, the left and right used for transporting the mowed grass are used. The space between the rear wheels becomes useless.

The present invention is intended to provide a passenger-type mower that can more effectively utilize the space between the left and right rear wheels below the machine body.

The passenger-type mower in the present invention is provided with an airframe frame supported by a pair of left and right front wheels and a pair of left and right rear wheels, and is below the airframe and within the front-rear distance between the front wheels and the rear wheels. In addition, a rear discharge type mower device is configured to be deployable, and a tool box is provided behind the mower device between the pair of left and right rear wheels.

According to the present invention, the space between the pair of left and right rear wheels behind the mower device can be effectively used as the space for arranging the toolbox.

In the above configuration, it is preferable that the toolbox is located between a pair of left and right mainframes constituting the airframe and is detachably supported by the airframe.

According to this configuration, the pair of left and right mainframes firmly holds the toolbox, and the strong mainframe easily prevents the toolbox from being deformed due to contact with other objects.

In the above configuration, it is preferable that the tool box is provided with an opening / closing port at the rear of the machine body and a lid for closing the opening / closing port, and can be opened / closed from the rear side of the machine body.

According to this configuration, it is easy to open and close the tool box from the rear side of the machine while getting off the machine.

It is an overall side view of a riding type mower. It is an overall plan view of a riding type mower. It is a rear view of a riding type mower. It is an exploded perspective view which shows the mounting structure of a tool box to a riding type mower.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Unless otherwise specified, the front-back direction and the left-right direction in the description of the present embodiment are described as follows. That is, the traveling direction on the forward side (see arrow F in FIG. 1) is "forward" and the traveling direction on the backward side (see arrow B in FIG. 1) is "" when the riding type mower to which the present invention is applied. "Rear", the direction corresponding to the right side (see arrow R in FIG. 2) with respect to the forward posture in the front-back direction is "right", and the direction corresponding to the left side (see arrow L in FIG. 2) is "left". ".

[Overall configuration of passenger-type mower]
FIG. 1 shows the entire side surface of a passenger-type mower, which is an example of a working machine. This passenger-type mower is provided with a pair of left and right steerable front wheels 11 and 11 on the front side of the machine frame 10 of the traveling machine 1, and a pair of left and right driveable rear wheels 12 and 12 on the rear side. It is configured to run.
Below the fuselage frame 10, a rear discharge type mower device 4 is suspended and mounted between the front wheels 11 and the rear wheels 12 in the front-rear direction so as to be able to move up and down.

As shown in FIGS. 1 and 2, a driving unit 2 is provided on the front portion of the machine frame 10 of the traveling aircraft 1, and a boarding operation unit 3 is provided on the rear side of the driving unit 2.
In the driving unit 2, the engine 20 is mounted on the machine frame 10 in a state of being built in the engine bonnet 21. The power taken out from the rear side of the engine 20 is input to the mission case 23 at the rear position via the main transmission shaft 22, and the power shifted in the mission case 23 is output to the drive system of the rear wheels 12.

Power for work can be taken out from the front side of the engine 20. That is, a power take-out mechanism 25 configured by a belt transmission mechanism is provided on the front side of the engine 20, and the power of the engine 20 is driven by the drive unit 4A of the mower device 4 via the PTO shaft 26 provided in the power take-off mechanism 25. Has been transmitted to.

The boarding operation unit 3 on the rear side of the driving unit 2 is provided with a control unit 3A provided with a control panel 30 connected to the rear side of the engine bonnet 21 and a steering wheel 31 and the like. On the rear side of the control unit 3A, a driver's seat 33 is installed above the boarding step 32 located at the feet, and a rops 34 is erected at a rear portion of the driver's seat 33.
The rops 34 are formed in a gate shape when viewed from the front, and the lower ends of the columnar legs 34a and 34a on both the left and right sides are connected and fixed to the rear end of the machine frame 10. The upper end sides of the left and right columnar legs 34a and 34a are connected by a gate-shaped upper frame 34b and are provided so as to cover the upper side of the driver's seat 33. A fender mirror 35 is erected at the front end on the upper surface of the boarding step 32.

The machine frame 10 includes a pair of left and right main frames 10A and 10A that are long in the front-rear direction over almost the entire length of the traveling machine 1, and a rops base 10B is integrally fixed to each rear end of the main frames 10A and 10A. ing. The rops base 10B includes a horizontal member 10C that is bolted to the outer surfaces of the main frames 10A and 10A and projects laterally outward. These main frames 10A and 10A and the rops base 10B constitute the airframe frame 10.
Then, the lower ends of the columnar legs 34a and 34a on both the left and right sides are connected and fixed to the protruding ends of the horizontal member 10C in the rops base 10B. A gate-shaped upper frame 34b is connected to the upper end side of the left and right columnar legs 34a and 34a.

A guard frame 16 serving as a protective member for the front part of the machine body is provided on the front part of the machine body frame 10.
The guard frame 16 is provided with a balance weight mounting portion 14 to which a plurality of balance weights can be mounted.

[More device]
The mower device 4 includes a blade housing 40 that is suspended and supported so as to be able to move up and down with respect to the airframe frame 10 via a link mechanism 13 having a pair of front links 13a and rear links 13b on both left and right sides.
A mower elevating cylinder 15 is connected to the upper end of the front link 13a of the link mechanism 13. The vertical height position of the blade housing 40 with respect to the machine frame 10 can be changed as the mower elevating cylinder 15 expands and contracts.

A drive unit 4A to which power transmitted from the PTO shaft 26 is input is provided on the upper portion of the blade housing 40. Although not shown, the drive unit 4A is equipped with a gear interlocking mechanism for branching and transmitting the power transmitted from the PTO shaft 26 to the left and right rotary blades 41 and 41.

A pair of left and right rotating blades 41, 41 are arranged in the blade housing 40. Each rotary blade 41 rotates around the center of the vertical axis, and the grass is cut by being driven to rotate at a constant velocity in a state where a part of the rotation locus overlaps with each other. Then, it is configured to discharge the mow toward the rear from the mowing discharge port 42 formed at the rear part of the blade housing 40 by the transport wind generated by the rotational movement of the rotary blade 41.

The duct member 17 is attached to the rear end portion of the main frame 10A on the side opposite to the side to which the rops base 10B is attached, that is, on the surface on the side inside the machine body. Therefore, the duct member 17 is located between the pair of left and right main frames 10A, 10A (between the pair of left and right rear wheels 12, 12), and is located rearward and upward of the grass discharged from the mower device 4. When guidance is required, it is located behind the mowing discharge port 42 of the mower device 4 and is provided diagonally backward and upward so that the guidance is possible.
The cross-sectional shape of the duct member 17 is a channel shape with an open lower side, and is attached from the rear position of the mowing discharge port 42 of the mower device 4 to the rear end of the rops base 10B.

[Toolbox]
In this passenger-type mower, a tool box 5 is provided behind the mower device 4 between the pair of left and right rear wheels 12, 12.
The tool box 5 includes a main body 5A and a lid 5B, and is formed in a rectangular box shape as a whole. As shown in FIG. 1, the tool box 5 is located at a position rearward from the mowing discharge port 42 of the mower device 4. Have been placed. By being located away from the mowing outlet 42 in this way, consideration is given so as not to interfere with the discharge of the mow discharged from the mowing outlet 42.

The main body 5A includes an upper surface 50, a lower surface 51, a left side surface 52, a right side surface 53, a front surface 54, and a rear surface 55. Of these, the upper surface 50 and the left and right side surfaces 52 and 53 are provided in a state of being inscribed in the inner surface of the channel-shaped duct member 17. The upper surface 50 is formed on an inclined surface that rises backward along the upper wall of the duct member 17. The lower surface 51 is formed on a surface that is close to horizontal or an inclined surface that is slightly downward inward, away from the upper surface 50 toward the rear. Therefore, inevitably, the overall shape of the main body 5A and the tool box 5 is a tapered shape in which the vertical width in the front is narrow and the vertical width is wide in the rear when viewed from the side.

The front surface 54 is formed on a surface along the vertical direction, and the front surface 54 is in a forward leaning posture located forward toward the upper side so as to guide the mowing discharged from the front mowing discharge port 42 downward. There may be.
The rear surface 55 is an opening / closing port 56 that is opened toward the rear of the machine body. The opening / closing port 56 has a lower edge at a height close to the lower edge of the front surface 54, and an upper edge at a position higher than the upper edge of the front surface 54, and is formed in a vertically long rectangular shape. A peripheral flange 56a is provided on the peripheral edge of the opening / closing port 56.

The rear surface 55 is equipped with a lid 5B capable of opening and closing the opening / closing port 56.
The lid 5B is formed in substantially the same shape as the peripheral flange 56a of the opening / closing port 56, and is pivotally supported by a hinge member 57 provided on the peripheral flange 56a. As a result, the lid 5B is configured to be able to swing open and close in the left-right and lateral directions around the vertical axis of the hinge member 57. By opening and closing the lid 5B, it is possible to switch between the closed state of the tool box 5 in which the opening / closing port 56 is closed and the open state of the tool box 5 in which the opening / closing port 56 is opened.

The peripheral flanges 56a are integrally formed on the upper portion on the outer side of the peripheral edge of the opening / closing port 56 of the tool box 5 and on both the left and right sides. The duct member 17 is also integrally formed with end flanges 17a on the upper portion at the rear end and on both the left and right sides.
Then, by bolting the peripheral flange 56a of the tool box 5 to the end flange 17a of the duct member 17 in a state of being overlapped from the rear side, the tool box 5 can be attached to and detached from the machine frame 10 via the duct member 17. Can be supported by.

[1 of another embodiment]
In the embodiment, an example is shown in which the entire shape of the tool box 5 is formed into a tapered rectangular box shape in a side view, but the structure is not necessarily limited to this, and any shape can be adopted. Is.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

[2 of another embodiment]
In the embodiment, an opening / closing port 56 is provided on the rear surface 55 of the main body 5A of the tool box 5, and a structure in which a lid 5B that can be opened / closed in the left-right direction is provided as a means for opening / closing the opening / closing port 56 is exemplified. , Not necessarily limited to this structure. For example, the lower edge side of the opening / closing port 56 of the tool box 5 may be pivotally supported so as to be able to open / close by swinging up / down, or a shutter (not shown) facing the opening / closing port 56 along the rear surface 55 may be provided in the vertical direction. , Or it may be slid in the left-right direction so that it can be opened and closed. Alternatively, a drawer-shaped box (not shown) may be inserted into the opening / closing port 56 so that the opening / closing can be opened / closed by a push-pull operation.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

The present invention can be applied to various passenger-type mowers ranging from large machines to small machines.

4 Moor device 5 Tool box 5A Main body 5B Lid 10 Airframe frame 10A Main frame 11 Front wheel 12 Rear wheel 56 Opening and closing port

Claims (3)

It is equipped with an airframe frame supported by a pair of left and right front wheels and a pair of left and right rear wheels.
A rear discharge type mower device can be deployed below the fuselage frame and within the front-rear distance between the front wheels and the rear wheels.
A passenger-type mower in which a tool box is provided behind the mower device between the pair of left and right rear wheels. The passenger-type mower according to claim 1, wherein the toolbox is located between a pair of left and right main frames constituting the airframe, and is detachably supported with respect to the airframe. The passenger-type mower according to claim 1 or 2, wherein the tool box is provided with an opening / closing port at the rear of the machine body and a lid for closing the opening / closing port, and can be opened / closed from the rear side of the machine body.

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