JPH0139263Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a one-wheel type walk-behind tiller for management, which has a working device attached to the front and runs on a one-wheel type wheel after working.

Conventional tillers for management use two wheels attached to the left and right sides of the machine, but in recent years, machines with only one wheel have appeared in order to reduce weight and cost. However, when using a unicycle, depending on the type of work equipment attached to the front of the machine, the muddy surface it travels on is rough, making it difficult to move straight. For example, in the case of center-driven trench digging equipment, uncultivated land remains in the center,
The lug body of the rear wheel rests on this upwardly protruding portion, causing the vehicle to skid from side to side, making it difficult to drive straight.

This invention takes the following technical measures to eliminate the above-mentioned drawbacks. That is, it is a walking management machine 3 in which a center-driven working device 1 is disposed at the front in the direction of travel, and a single-wheel type drive wheel 2 is provided at the rear in the direction of travel and within the width of the working device 1. This drive wheel 2 is provided with lug bodies 5, 5... which are equally distributed radially from circular base bodies 4, 4 disposed on both sides, and which protrude toward the other side. The structure of the linear guide device for a unicycle is characterized in that a gap 6 is provided in the width direction between the lug bodies 5, 5.

This invention has the following unique effects due to the above-mentioned configuration. In other words, the gap provided between a pair of lug bodies moves forward while holding the remaining tillage part that protrudes upward, so the main body can run along the left tillage part and does not turn left or right, achieving straight-line performance. Improves and makes driving easier.

Hereinafter, embodiments of this invention will be described based on the drawings.

The figure shows this invention incorporated into a walking type management machine with a rotating handle.In front of the walking type management machine 3 traveling in the direction of arrow A, there is a trench digging machine 1a, which is a center-driven working device 1. It is arranged. This groove digging machine 1a is drivably connected to a drive case 11 attached to the front part of a transmission case 7 by a transmission device such as a chain or gears, which is not shown in the figure, and is built into the drive case 11. ing.

A mounting base 8 is provided to protrude rearward in the traveling direction from the transmission case 7, and an engine 9 is mounted on the mounting base 8. The engine 9 and the transmission case 7 are interlocked and connected by a transmission tool 10.

A wheel case 12 is attached below the transmission case 7, and a wheel 2 is drivably attached to the side of this wheel case 12.

The drive case 11 of the groove digging machine 1a, which protrudes forward and downward from the transmission case 7, is of the center drive type, so the drive case 11 as shown in FIG.
Leave 13 parts of the remaining tillage below the width of the area.

An axle 14 projects laterally from the lower end of the wheel case 12, and a boss 15 of the wheel 2 is attached via a fixing device (not shown) such as a key or a spline. Approximately circular base bodies 4, 4 are integrally provided on both left and right sides of this boss 15.
Lug bodies 5, . A widthwise gap 6 is provided between the pair of lug bodies 5, 5 which protrude toward the other side.

Next, the effect will be explained.

Remaining tillage 13 left after trench digging by trench digging machine 1a
If the part is held between the gaps 6 of the wheels 2, the walking management machine 3 will move straight along the remaining tillage part 13.
Easy to operate. Further, as shown in FIG. 6, if the gap 6a is made narrower than the width of the remaining tillage 13, there is an advantage that the lug bodies 5, 5 can scrape off the remaining tillage 13 during traveling.

FIG. 7 shows a conventional example, in which the base body 4 of the wheel 2b
Since the lug bodies 5b, 5b, .

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is an overall side view, Fig. 2 is a perspective view, Fig. 3 is a developed plan view for explanation, Fig. 4 is a sectional view of the wheel, and Fig. 4 is a cross-sectional view of the wheel. Figure 5 is a perspective view of the same, Figure 6 is a cross-sectional view of the main part of another example, and Figure 7 is a perspective view of the same.
The figure is a sectional view of a conventional example. Explanation of symbols, 1... Working device, 2... Driving wheel, 3... Walking management machine, 4... Base body, 5...
Lug body, 6... void part.

Claims (1)

[Scope of utility model registration request] A walking management machine 3 in which a center-driven working device 1 is disposed at the front in the direction of movement, and a single-wheel drive wheel 2 is provided at the rear in the direction of movement and within the width of the working device 1.
The drive wheel 2 is arranged radially and equidistantly from substantially circular base bodies 4, 4 disposed on both sides, and lug bodies 5, 5... projecting toward the other side.
A linear guide device for a unicycle, characterized in that a gap 6 is provided in the width direction between the pair of opposing lug bodies 5, 5.