JPH0151393B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention is capable of reversing a working machine attached to a traveling operation device and a working machine mounting device that are rotatably equipped on a tractor main body at the edge of a field, etc. without turning the tractor main body. This invention relates to a swing-saving tractor that is designed to improve work efficiency and safety by omitting the need for turning.

[Conventional technology]

In Japan's agricultural fields, where the field plots are small and there are many slopes, the turning operation of the tractor on the headland significantly reduces the work efficiency, and the irregular rotation of the traveling wheels due to turning on the headland. This disturbs the topsoil and leaves it in an irregular state with wheel marks left behind. Furthermore, in sloping fields, turning the machine body causes a shift in the center of gravity, which poses a risk of overturning and the like, which greatly impedes mechanization of agricultural work on sloping fields. Traditionally, tractors (agricultural machines) used on slopes, etc. have either a reversible drive control device (steering device) or a machine for civil engineering work, such as a backhoe, with a fixed undercarriage. There is one that rotates the entire part other than the undercarriage, including the working part, with the center of the undercarriage as an axis, but in the former, only the handle is reversed, and the work equipment must be replaced, and it is the same as reciprocating. work is difficult,
In the latter case, the weight of the rotating part increases, it does not save energy, and there are problems in terms of safety on slopes.

[Problems to be solved by the invention]

Therefore, the present invention aims to be able to work stably even on slopes, etc., and the tractor body can always travel in the most stable state, omitting turning work on headlands, and improving work efficiency accordingly. and prevent disturbance of the field scene on the headland.
The object of the present invention is to provide a swing-saving tractor that saves fuel required for turning and enables safe, highly efficient, highly accurate, and economical work.

[Means to solve the problem]

In order to achieve this object, the present invention provides a rotary body equipped with at least a traveling operation device and a work equipment mounting device in the tractor body so as to be rotatable in the horizontal direction, so that the tractor can be driven in one direction, and The present invention is characterized in that, when the tractor is turned back, only the rotating body is rotated without turning the tractor body, and the work equipment attached to the traveling operation device and the work equipment mounting device is reversed and the work is performed. It is something to do.

【Example】

Embodiments of the present invention will be described below with reference to the drawings. In Fig. 1, reference numeral 1 denotes a walk-behind tractor body, and an engine 2 is mounted on one side of the main body 1 in the longitudinal direction.
is mounted, and a pair of running wheels 3, 3 are pivotally supported on both left and right sides of the central portion. Running wheels 3,3
is pivotally supported at one end by the other end of chain cases 4, 4 which are pivotally connected to the tractor body 1 so as to be rotatable in the vertical direction, and the chain cases 4, 4 are vertically adjusted by a vertical adjustment device 5. In particular, both wheels 3, 3 have a step so that they can touch the ground. Further, a transmission 6 is provided at an upper central position of the tractor body 1, receives power from the engine 2, transmits power from the transmission 6 to the chain cases 4, and also has a PTO gear box. Power is also transmitted to 7.
A caster-shaped auxiliary wheel 8 is provided on one side of the lower part of the tractor body 1 in the longitudinal direction, and supports the tractor body 1 together with the traveling wheels 3, 3. On the other hand, a turntable 9 is provided at the upper end of the tractor body 1, and a plurality of ball bearings 10 are provided on the turntable 9. It is rotatably provided via a rotary plate 13. The rotating frame 11 includes a rotating shaft portion 1.
2, a rotating shaft coaxially protrudes from the PTO gear box 7 to constitute a transmission mechanism 14;
Power is transmitted to a power takeoff device (PTO) 15 provided at the bottom of one side of the rotating frame 11. A work machine mounting device 16 is provided below the power take-off device 15. A handle 17, which is a traveling operation device, is attached to the rotating frame on the side where the work equipment mounting device 16 is provided, and the handle 17 includes a throttle lever of the engine 2, a clutch lever of the traveling wheels 3,
A speed change lever and the like are provided (both not shown), and operating wires 18 extending from the rotating shaft portion 12 are switched by an operating lever 19. The operating wires 18 switch between a position where rotation of the rotating frame 11 is fixed and a position where rotation is allowed, and also switch the transmission of the transmission 6 to the chain cases 4, 4 between forward and reverse directions, separately from the speed change gear. When the rotary frame 11 is rotated, the running direction of the tractor body 1 is automatically switched to the opposite direction. A balance weight attachment device 20 is provided on the opposite side of the rotating frame 11 from the handle 17, and the balance weight attachment device 20 is designed to balance the work implement mounted on the work implement attachment device 16. In a tractor having such a configuration, when performing work in the contour line direction in a field with an inclination of θ as shown in FIG.
In addition, a balance weight B is attached to the balance weight attachment device 20, a step is provided on the running wheels 3, 3, the machine is run from one side of the field to the other, and a predetermined work is performed by the working machine A. When the machine reaches one end of the field, the tractor body 1 stops running and the work implement A is stopped, and the operating lever 19 is operated and the rotating frame 11 is rotated 180 degrees by holding the handle 17 and locked. . Then, as shown in Fig. 3, the handle 17, work implement A, and balance weight B are reversed with respect to the tractor body 1, and the machine is moved from the ridge that has been worked to the next ridge in a switchback-like manner to begin the work. continue.
In this case, the step between wheels 3 and 3 can be left as is.
In addition, the rotation (traveling) direction of the running wheels 3, 3 is automatically switched, and the machine does not turn on the headland, which not only improves work efficiency, but also because the machine does not turn, the wheels 3, 3 The earth will not be desolated. Furthermore, even on a slope, there is no risk of the aircraft falling due to turning, making it safe. Note that there are two types of work equipment A, one that performs work simply by being towed, and one that receives power from the power take-off device 15. In either case, the working direction can be reversed simply by rotating the rotating frame 11. Therefore, there is no problem in practical use. Furthermore, when the running direction of the tractor main body 1 is reversed, the auxiliary wheels 8 automatically turn in the opposite direction to ensure smooth running. Furthermore, the same work can be performed not only on sloped land but also on flat fields.

【Effect of the invention】

As explained above, according to the swing-saving tractor of the present invention, it is possible to work on a headland etc. by reversing only the traveling operation device and the work equipment without turning the tractor body, so that the traveling wheels do not have to be It saves energy because there is no steering or turning, and there is no disturbance of the headland or roughness of the field due to wheels, and there is no risk of the machine falling over even on slopes, making it safe, allowing for stable work and improved work efficiency. can be improved.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, with FIG. 1 being a side view of the entire system, FIG. 2 being a front view showing how to work on a slope, and FIG. 3 being a plan view illustrating work on a headland. 1... Tractor body, 2... Engine, 3...
Running wheels, 4...Chain case, 5...Vertical adjustment device, 6...Transmission, 7...PTO gearbox, 8...Auxiliary wheels, 9...Turntable, 1
0... Ball bearing, 11... Rotating frame, 12... Rotating shaft portion, 13... Rotating plate, 14...
...Transmission mechanism, 15...Power takeoff device (PTO),
16...Work machine mounting device, 17...Handle, 1
8... Operating wires, 19... Operating lever, 20
...Balance weight attachment device, A...Work equipment,
B...Balance weight.

Claims (1)

[Claims] 1. A rotating body equipped with at least a traveling operation device and a work equipment mounting device is provided on the tractor body so as to be rotatable in the horizontal direction, and the tractor is driven in one direction,
When the tractor is turned back at the edge of a field, etc., only the rotating body is rotated without turning the tractor body, and the work equipment attached to the traveling operation device and the work equipment attachment device is reversed and the work is performed. A swing-saving tractor featuring: