JPH0528986Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Application of the Invention) The present invention relates to a front grader that is removably connected to the front of a work vehicle for cutting roots of vegetables, etc.

(Prior Art) A front grader that is detachably connected to the front of a work vehicle such as a tractor and cuts the roots of vegetables, etc. by moving the vehicle forward has been put into practical use.

Such a front grader is equipped with a concave cutter that is long in the left and right direction, brings the cutter close to the ground, and performs root cutting work by moving the cutter forward.

(Problem to be solved by the invention) In the above-mentioned front grader, vegetables and leaves whose roots are cut by the movement of the cutter, as well as residual soil etc. that are scraped by interference with the cutter, remain on the ground and are moved later. There is a risk of interfering with oncoming vehicles and stepping on vegetables, etc. Therefore, the width of the root cutting is limited to the width inside the wheel so as not to interfere with the following wheels, allowing efficient root cutting work. I can't do it.

This invention was made to solve the above problems, and its purpose is to cut the roots of vegetables, etc., and to guide the cut vegetables, etc. and the remaining soil cut with the cutter to the rear and side. The purpose is to eliminate interference between the following wheels and vegetables, etc., and to set the width of the cutter to the full width of the vehicle, allowing efficient root cutting.

(Means for solving the problem) A means for solving the above problem is to provide a guide wheel at the front end of the machine frame, provide a root cutting cutter with a concave shape in front view behind the guide wheel, and install a root cutting cutter that is concave in front view. A guide member that is V-shaped in plan view and expands rearward is provided at the rear of the machine, and the machine frame is provided with a coupling mechanism for detachably attaching it to the front of the work vehicle.

(Operation by the above means) According to the above means, the vegetables and grass whose roots have been cut with the root cutting cutter, and the scraped remaining soil are guided rearward and laterally by the rear guide and discharged.

(Embodiment) Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a side view of a working vehicle to which a grader according to the present invention is connected, Fig. 2 is a perspective view of the grader, Fig. 3 is a side view of the same, and Fig. 4 is a sectional view taken along the line 4-4 in Fig. 3. be.

The work vehicle 1 has wheels 3, 4 on the front, rear, left and right sides of the vehicle body 2.
A handle 5 is provided at the front part of the vehicle body, a seat 6 is provided at the rear part, and a front sig rider 10 is detachably connected to the vehicle body 2 via a hitch 7 protruding forward from the front end of the vehicle body 2.

Details of the front grader 10 are shown in Figures 2 to 4.
As shown in the figure, the base of the machine frame 11 includes a member 11a extending in the front-rear direction with a backward U-shaped bracket 12, and the member 11a consists of two parallel members, with a mounting base 11b for the bracket 12 at the rear end. A bracket 12 is engaged to sandwich the hitch 7 at the front end of the vehicle body, and the machine frame 11 and the vehicle 1 are detachably connected through the pin 13.

A cross member 11c that is long in the left-right direction is disposed at the front end of the members 11a, 11a.
c, the central boss portion 11d is connected to the members 11a, 11a.
A number of pins 11f are attached to the support portion 11e at the front end, and a gate-shaped regulating member 11g is provided at the front end of the members 11a, 11a, and the swing angle of the cross member 11c is controlled by adjusting bolts 11h provided on both sides of the regulating member 11g. suppress. Cutter holders 14, 14 are suspended from both ends of the cross member 11c, and a root cutting cutter 15, which is concave in front view, is hung horizontally between the holders 14, 14, and the cutter 15 is used to attach the raised pieces 15a, 15a on both sides to bolts. 16... are detachably fixed between the lower portions of the holders 14, 14.

A stay 11i, which is concave in plan view, is provided on the intermediate portion of the cross member 11c so as to be inclined forward and upward, and a connecting rod 11j is provided forward from the center of the front end of the stay 11i, and a head tube-shaped head of the guide wheel 17 is provided on this stay 11i. A cylindrical holder 18 is connected to the holder 18, and a rod 19 is fitted into the holder 18 so as to be able to move up and down from below.A fork 20 for supporting the guide ring 17 is connected to the lower end of the rod 19, and a handle on the holder 18 is connected to the cylindrical holder 18. A feed screw mechanism is installed in the holder 18 so that the rod 19 and therefore the guide wheel 17 are moved up and down by rotating the rod 21. Rotation of the handle 21 causes the machine frame 11 to move up and down with respect to the guide wheel 17 which is brought into contact with the ground, and as a result, the height of the cutter 15 relative to the ground, that is, the cutting height during root cutting work is adjusted.

In addition, 28 in the drawing is a bifurcated stopper, and the rod 1
9 and is provided so as to be sandwiched between the connecting rods 11j on the fuselage side, and restricts excessive swinging of the guide wheels 17 to the left and right.

A guide member 22 is provided behind the above cutter 15, and the guide member 22 has a V
As can be seen in the figure, the cross section is a horizontal V-shape that recedes backwards, and the lower end 22a is set at the same height as the cutter 15 or slightly higher than this. The width of the guide member 22, that is, the length in the left and right direction is set to be larger than the width of the cutter 15.
2b, and extension pieces 22 with the same cross section, which are joined to the rear parts of both side pieces 22c and 22c and extend outward from each other.
A reinforcing cross member 22d is horizontally suspended between the inner surfaces of the extending pieces 22c and 22c.

A stay 23 is provided upwardly on the front part of the guide member 22, and a bracket 24 surrounding the stay 23 is provided to protrude rearward toward the machine frame 11, and the bracket 24 is connected to the members 11a,
The height of the guide member 22 relative to the ground can be adjusted by rotating the handle 26, which is connected to the gate-shaped regulating member provided at the front end of the guide member 11a and the diagonal screw adjustment mechanism 25 provided between the members. This is the later locking screw mechanism.

In the above, as the vehicle 1 moves forward, the roots of vegetables, etc. are cut using the cutter 15, and the height of the root cutting varies depending on the type of vegetables, etc., so the height of the guide wheel 17 is adjusted by rotating the handle 21. , adjust the cutting height of the cutter 15. The vegetables, grass, scraped soil, etc. to be cut face the front of the following guide member 22, and are pushed outward and rearward by the action of this guide member 22, and are therefore discharged to the outside of the wheels 3 and 4. So there will be no interference.

(Effects of the invention) As is clear from the above, according to the invention, vegetables, grass, etc. whose roots have been cut by the cutter, scraped soil, etc. are guided and discharged in the posterolateral direction by the guide member that follows the cutter, so that the vegetables and grass cut by the cutter are guided and discharged in the posterolateral direction. This prevents interference between the wheels and these, and on the other hand, even if the cutter is set to the full width of the car, there is no interference between the following wheels and the cut vegetables, etc., so the width of the cutter can be increased, and a wide cut can be made at once. Root cutting is possible and efficient root cutting work can be performed.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 shows a side view of a front grader connected to a work vehicle, Fig. 2 shows a perspective view of the grader, and Fig. 3 shows a side view of the same. 4 is a sectional view taken along the line 4-4 in FIG. 3. In the drawings, 1 is a working vehicle, 10 is a front grader, 11 is a machine frame, 15 is a cutter, 17 is a guide wheel, and 22 is a guide member.

Claims (1)

[Scope of utility model registration request] A guide wheel is provided at the front end of the machine frame, a root cutting cutter that is concave in front view is provided behind the guide wheel, a guide member that is V-shaped in plan view and expands backward is provided behind the cutter, and A front grader is characterized in that it is equipped with a connection mechanism for detachably attaching it to the front of a work vehicle.