JPS5851251Y2 - Work monitoring mirror at backhoe - Google Patents

Description

[Detailed description of the invention] In this invention, a rotary boom 2 is provided at the front of the machine body 1 facing forward, a rotary arm 3 is provided at the tip of the boom 2, and an excavation shovel 4 is rotated at the tip of the arm 3. In a freely movable backhoe, a horizontal rod 6 is provided protruding from a metal fitting 5 that is removably attached to the side of the rotating boom 2, and the rod 6 is orthogonal to the side of the boom 2, and its tip is attached from the horizontal direction. The middle of a mirror mounting rod 8 is pivoted to the lower end of a swinging rod 7 that is slightly tilted downward and is suspended from the horizontal rod 6, and a rearward mirror 10 is provided at the front end of the same mounting rod 8. A downward mirror 11 is provided at the end, and an intersection angle adjustment device 1 between the swingable rod 7 and the mirror mounting rod 8
The present invention relates to a work monitoring mirror provided with 2.

The machine body 1 is a crawler and has a driver's seat 13, and the boom 2, arm 3 and shovel 4 are operated by hydraulic cylinders 14, 15, 16.

The base of the boom 2 is connected to the horizontal rotating machine frame 17 by a horizontal axis.
The driver's seat 13 is mounted on the rotating machine frame 17 with the driver's seat 13 facing forward and rotates horizontally together with the boom 2.

The cross angle adjustment device 12 has a plurality of small (L18) arranged in a row in the front and back direction on the back surface of the downward mirror 11, and bends the tip of the retaining rod 19 whose base is freely supported on the horizontal rod 6 downward, The intersecting angle of the rods 7 and 8 is adjusted by inserting the appropriate small rod (L18).

In addition, what is indicated by 20 in the figure is the mirror mounting rod 8 and the mirror 10.
21 is a connecting pin between the arm 3 and the shovel 4, and 22 is a link provided between the cylinder 16 and the shovel 4.

Therefore, the operator 2 who is in the driver's seat 13 on the aircraft 1
3, the boom 2, arm 3, and shovel 4 are operated to raise the shovel 4 to the position shown by the solid line in FIG. 1, and the excavated soil in the shovel 4 is discharged.

This ejection operation can be performed by the operator 23 while observing directly.

After that, when the shovel 4 is lowered to the position of the imaginary line in FIG. From this, the operator 23 can perform an excavation operation while monitoring the shovel 4 reflected in the rear view mirror 10 from the driver's seat 13.

Both mirrors 10 and 11 are swingably suspended by suspension rods 7, and the intersection angle with the suspension rods 7 is adjusted to a constant value by the device 12, so that the boom 2 moves from the solid line position in FIG. 1 to the imaginary position in FIG. Even if it is lowered or raised to the line position, both mirrors 1
Since the angle of 0.11 with respect to the vertical line does not change, if the driver's seat 13 looks at the rear view mirror 10 located at the solid line in the diagram, the excavation position under the cliff will be reflected, and it will be possible to determine whether there is a person at the same position.

Of course, since the transverse rod 6 protruding from the side surface of the boom 2 is slightly inclined as described above, the side interior mirrors 10, 11 can capture the shovel 4 directly below the boom.

Conventionally, when excavating atomic parts using the above-mentioned backhoe,
Since the operator 23 in the driver's seat 13 cannot see the atomic excavation position or the shovel 4 descending to that position, the operator 23 may not notice the person at the excavation position or the shovel guide, and the shovel 4 may hit the person and injure them. was there.

This proposal was made in view of the above-mentioned defects, and since the present proposal is configured as described above, when excavating atoms using a backhoe, the operator 23 can move the lowering position of the shovel 4 and the lowering shovel 4 from the driver's seat 13 by using both mirrors 10 and 11. Not only can it be monitored and work safety improved, but
This has the advantage that the excavation position under the cliff can be confirmed when the shovel 4 is raised.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a backhoe equipped with the work monitoring mirror of the present invention, Fig. 2 is a perspective view of a homogeneous endoscope, and Fig. 3 is Fig. 2A-
It is a front view taken along the A line. 1... Aircraft 2... Rotating boom, 3...
... Rotating arm, 4... Excavation shovel,
5...Metal fittings, 6...Horizontal rod, 7...
...Swivelable rod, 8...Mirror mounting rod, 10
... Rearward mirror, 11 ... Downward mirror, 12 ... Cross angle adjustment device.

Claims (1)

[Scope of utility model registration request] A rotating boom 2 is installed in the front of the aircraft 1 facing forward, and the boom 2
In this backhoe, a rotary arm 3 is provided at the tip of the arm 3, and an excavation shovel 4 is rotatably provided at the tip of the arm 3. A mirror mounting rod 8 is attached to the lower end of a swingable rod 7 that is suspended from the horizontal rod 6, with a parallel rod 6 extending perpendicularly to the side surface of the boom 2 and tilting its tip slightly downward from the horizontal direction.
A rearward mirror 10 is mounted on the front end of the mounting rod 8 with a pivot 9 in the middle.
A work monitoring mirror is provided with a downward mirror 11 at the rear end, and an intersecting angle adjustment device 12 between the swingable rod 7 and the mirror mounting rod 8.