JPS585735Y2 - ditch digging machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a trench excavator whose purpose is to quickly and easily move an endless chain excavator by a small amount left and right in the direction of movement during excavation work.

When using a trench excavator for harvesting root vegetables, it forms a trench around the roots of the root vegetables and pulls out the root vegetables into the trench while breaking down the walls of the trench. The machine follows the roots of crops that are growing in meandering rows due to uneven seeding and uneven growth, rather than being given a straight line.
It is desirable to be able to excavate grooves that meander arbitrarily.

However, conventional trench excavators can move in a straight line by using crawler running devices installed on both the left and right sides of the machine, or by installing idle wheels facing left and right in addition to the pair of drive wheels installed on the left and right. It is made with emphasis on sexuality,
When changing the direction, the drive of one of the left and right crawlers or one of the left and right drive wheels is cut off by operating a side clutch, so the direction can be changed minutely in units of starch while moving to the roots of the crop. It is impossible to expect a finely meandering operation similar to the above.

After repeating various experiments, we found that the left and right drive wheels, which are mounted on the machine frame in order to drive the trench excavator, were placed at the rear end side behind the endless chain excavator mounted on the machine frame. At the same time, free wheels with casters are arranged and mounted on the front end side of the machine frame near the front end portion of the endless chain excavator that is buttoned during excavation work. Then, while pushing out the endless chain excavator that is in operation with a pair of left and right drive wheels located behind it, the front end of the machine frame supported by free wheels with casters is moved left and right. When excavation work is carried out by steering with the free wheel, the front end side of the machine frame can be easily displaced by the desired amount in the left and right direction by the free wheel supporting the front end side of the machine frame. The front end of the endless chain excavator, which moves left and right due to the displacement, acts as a snake that regulates the new direction of travel, and is pushed in that direction by a pair of drive wheels left and right. It has been found that changes in the desired direction can be made with great ease.

Therefore, in accordance with the present invention, a pair of drive wheels facing each other on the left and right are attached to the machine frame of a trench excavator, in which an endless chain excavator is mounted so as to move up and down around its drive sprocket shaft. A shaft is mounted behind the endless chain excavator body on the rear end side in the direction of movement of the machine, and on the front end side of the machine frame,
By mounting a free wheel with an appropriate number of casters in the vicinity of the side of the front end of the endless chain excavator that is buttoned during excavation work, the direction of movement can be adjusted to suit a root vegetable digging and harvesting machine. To provide a trench excavator that can precisely perform minute displacements of -\ from left to right.

Next, embodiments will be exemplarily described with reference to the drawings.

A is a trench excavator, which includes an endless chain excavator a, a machine body b, a traveling device C, a prime mover d, a control device e, and the like.

The endless chain excavator a includes a drive sprocket 2 mounted on a drive shaft 1, an idler 3, a boom 4, a chain 5, and an excavator claw 5a.
By interlocking and interlocking a shaft cylinder 6 that fits on the drive shaft 1 and is fixed to the boom 4 with an operating lever 7 attached to the control device e, the shaft cylinder 6 is rotated to perform excavation. body a
It is designed to raise and lower.

The lever 8 is made to protrude from the shaft cylinder 6, and the lever 8 is
One end of a wire 9 is fixed to the tip of the handle 10, and the other end of the wire 9 is interlocked with the operating lever I provided on the handle 10, thereby raising and lowering the endless chain excavator a.

The machine frame has a rectangular shape with a concave portion 11 opening at one end in the longitudinal direction.

The drive shaft 1 is mounted in the inner part of the recessed part 11 and supports the endless chain excavation body a.

(See FIGS. 1 and 2) The endless chain excavation body a is raised and lowered within this recessed portion 11.

The traveling device C consists of a pair of left and right drive wheels 12.12 and a free wheel 13 equipped with casters.

A pair of drive wheels 12.12 on the left and right are located at the rear of the machine frame in the direction of movement during excavation work, and are mounted on the endless chain excavator a.
It is attached to an axle 14.14 that is mounted at a fixed position further to the rear, and the axle 14.14 is driven and rotated by being driven by the prime mover d, but a side clutch may also be attached. .

The free wheel 13 is located at the front of the machine frame in the direction of movement.
As shown by the solid line in the figure, the base end is attached to the vertical axis at both corners of the bottom surface of the machine frame at a portion located near the side of the front end of the endless chain excavator a during excavation work. An axle shaft 13a is pivotally supported within the tip prongs of a fork 15 (which serves as a caster), which is installed so as to rotate freely with the fork 15, and when the machine frame moves, the fork 1
5 rotates, but there may be only one.

The prime mover d has an output shaft 16, a pulley 17, a belt 18,
The drive shaft 1 of the drive sprocket 2 is rotated via the pulley 19 to operate the endless chain excavator a.

The handle 10 of the control device e is provided at the rear in the direction of movement of the machine frame, but as shown by the chain line in the drawing, it may be provided at the front end in the direction of movement, or it can be switched to both these positions. It may be provided freely.

When trenching is to be done by the trench excavator A constructed as described above, the excavating body a is operated and rotated in a downward tilted manner so as to act on the ground.

Next, to explain the function and effect, as described above, the ditch excavator A according to the present invention is driven by a pair of drive wheels 12.12 on the left and right, and therefore, the direction in which the drive wheels 12.12 travel is However, during excavation work, the left and right drive wheels 12.12 push out the endless chain excavator a, so that the endless chain excavator a moves straight to the left and right of the trench excavated. There is a tendency to be greatly influenced by the lateral pressure in contact with the side wall, and the endless chain excavating body a moves in the direction of the trench being excavated using the endless chain body a as a rudder.

The direction in which the endless chain excavator a excavates is by using free wheels 13 equipped with casters 15 that support the front end of the machine frame to move the front end of the machine frame in the left and right direction. You can easily change it by moving it the desired amount.

Therefore, for example, when creating a groove C near root vegetables B as shown in FIG. 4, even if there is a bend in the row of root vegetables B, the・You can quickly and easily bend the endless chain excavator a by pushing the handle e in the direction A in Figure 3 or by pushing the front end of the machine frame in the direction shown in the figure to change the direction of movement of the endless chain excavator a. Part D vrM allows you to continue digging a trench that follows the root.

Further, even if the root vegetables B are planted in a staggered manner, an excavation groove suitable for the root vegetables B can be created.

Therefore, digging and harvesting of root vegetables can be done easily, quickly and reliably, regardless of the planting method.

[BRIEF DESCRIPTION OF THE DRAWINGS] Among the attached drawings, Fig. 1 is a side view of a trench excavating machine that can implement the present invention, Fig. 2 is a side view of the same as above, and Figs. 3 and 4 are views of the same as above. It is an explanatory diagram of the effect. Explanation of drawing symbols, A...Ditching machine, B...Root vegetables, C
... Groove, D... Bent part, a... Excavation body, b...
Machine frame, C... Traveling device, d... Prime mover, e... Control device, 1... Drive sprocket shaft, 2... Drive sprocket, 3... Idler, 4... Boom ,5
...Chain, 5a...Drilling claw, 6...Shaft cylinder, 7
...Operation lever, 8...Lever, 9...Wire, 10...Handle, 11...Invagination part, 12...
Drive wheel, 13... Yamada wheel, 14... Wheel, 15...
...Fork, 16...-Output shaft, 17... Pulley, 18... Belt, 19... Pulley.

Claims (1)

[Scope of Claim for Utility Model Registration] A pair of drive wheels facing left and right on the machine frame of a trench excavator, in which an endless chain excavator is mounted so as to move up and down around its drive sprocket shaft, on the rear end side in the traveling direction, arranged rearward from the endless chain excavation body and mounted on a shaft;
A free wheel having an appropriate number of casters is mounted on the front end side of the machine frame, and is positioned near the side of the front end part that is used during excavation work of the endless chain excavator. . trench digging machine.