JPS6340535Y2 - - Google Patents

Description

[Detailed description of the invention] The driving wheels of a trench excavator that digs trenches and raises ridges run on the bottom of the trench, so the distance between the left and right wheels is narrow and the machine is unstable.

This invention provides guide wheels to support the machine over the ridges dug on the left and right sides of the front of the trench excavator. The purpose is to stabilize the aircraft by adjusting the height and spacing of the left and right guide wheels.

The present invention will be described with reference to the embodiment shown in the drawings. Reference numeral 1 denotes a tilling blade with a twisted side surface, which is detachably attached to the left and right sides of a center drive type tilling shaft 2 so as to be brought to one side. 3 shows a chain case that rotates a chain wheel attached to the center of the tilling shaft 2. W is a pair of driving wheels of aircraft A on which engine E is mounted.

A rotating shaft 5 is inserted and supported in a shaft cylinder 4 installed horizontally at the front upper part of the body A, and a polygonal cylinder 7 is fixed to the tips of a pair of connecting rods 6 fixed to both ends of the rotating shaft 5. The side surfaces of the cylinder body 9 are connected to the outer ends of polygonal cylinder-shaped telescoping rods 8 which are telescopically inserted into both ends of the polygonal cylinder 7, respectively.
The support rod 11 of the guide wheel 10 is inserted into this so as to be movable up and down and fixed thereto. Reference numeral 12 denotes a set screw that is screwed into the polygonal cylinder 7 and the cylinder body 9.

Both legs of a square-shaped frame 13 are fixed to the shaft tube 4, and a threaded rod 14 is engaged with the ascending side of the shaft so as to rotate at a fixed position. Nut 15 pivoted on the top surface of cylinder 7
to screw into.

16 is a handle rod, which is connected to the screw rod 1 through a free joint 17.
4 and when the handle rod 16 is rotated, the nut 15 retreats along the screw rod 14 and the polygonal cylinder 7 rises around the rotation axis 5, or the nut 15 moves away from the screw rod 1.
4, the polygonal cylinder 7 descends.

Reference numeral 18 denotes a guide plate that covers the upper side of the left and right tilling blades 1, and guides the tilled soil dug up by the tilling blades 1 laterally and obliquely forward to form ridges.

In the present invention, as shown in Fig. 3, when a symmetrically twisted tilling blade 1 is attached to a tilling shaft 2,
The tiller blade 1 uses its twisted surface to kick up soil from side to side, forming ridges and digging a groove.To make the groove deeper, like a compost groove in an orchard, use the left and right guide wheels as shown in Figure 4. If you raise the position of 10 and move through the groove dug in the first step, an even deeper groove will be created.

Furthermore, as shown in Figure 5, when digging a trench along the edge of a ridge or along the contour lines of a slope, it is necessary to mound the soil high on the opposite side of the ridge or on the higher side. In such a case, the right and left tilling blades 1 are aligned in one direction to form a high ridge on one side, but in such a case, the position of the guide wheel 10 on the side of the high ridge is set higher.

Therefore, in the present invention, in order to raise or lower the position of the guide wheel 10 by a large amount, the support rod 11 may be raised or lowered from the cylinder body 9, or the polygonal cylinder-shaped telescoping rod 8 may be replaced from the polygonal cylinder 7. Further, in order to slightly raise or lower the position of the guide wheel 10, the polygonal tube 7 may be raised or lowered around the rotation axis 5 by rotating the screw rod 14 using the handle rod 16.

Also, if only the telescopic rod 8 of the guide wheel 10 on one side is replaced, it is convenient to create a high ridge on one side as shown in Fig. 2 or 5, and depending on the width of the ridge groove, the left and right Extend and retract the telescopic rod 8 to install the left and right guide wheels 10.
Change the interval.

In short, according to the present invention, the height of the guide wheels 10 that support the left and right front sides of the aircraft body A can be adjusted greatly or finely depending on the depth of the ridges or the difference in the height of the ridges on both sides. Alternatively, the position of only one side can be raised or lowered, or the interval between the guide wheels 10 can be adjusted according to the groove width, so that the body A can move forward stably.

[Brief explanation of the drawing]

FIG. 1 is an overall side view of an embodiment of the present invention, FIG. 2 is a perspective view of essential parts, and FIGS. 3, 4, and 5 are front views showing the operation of the present invention. 1 is a tilling blade, 2 is a tilling shaft, 4 is a shaft cylinder, 5 is a rotating shaft, 6 is a continuous rod, 7 is a polygonal cylinder, 8 is a telescopic rod, 10 is a guide ring, 12 is a locking screw, 13 is a frame body, 14 is Rako, 15 is Natsu.

Claims (1)

[Scope of utility model registration request] Engine E is mounted on machine A, which has tilling blades 1 with twisted sides attached to the left and right sides of tilling shaft 2, and a pair of drive wheels W that run on the bottom of the ditch are attached.
Insert the rotating shaft 5 into the shaft cylinder 4 installed horizontally at the front upper part of the
A polygonal tube 7 is fixed to the tips of a pair of connecting rods 6 fixed to both ends of the rotating shaft 5, and a tube is attached to the outer end of a polygonal tube-shaped telescopic rod 8 which is inserted into both ends of the polygonal tubes in a freely retractable manner. The supporting rod 11 of the guide wheel 10 is inserted and fixed thereto so as to be able to move up and down, and the legs are fixed to the shaft tube 4. On the ascending side of the frame 13, a screw rod 14 is attached.
are engaged so as to rotate at a certain position, and the screw rod 14
The threaded portion of the groove excavator is formed by screwing both sides into a nut 15 which is rotatably attached to the upper surface of a polygonal cylinder 7.