JPS6219721Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a soil removal plate for leveling work in a power working machine equipped with an excavator and a leveling machine.

(b) Conventional technology Conventionally, excavation work machines such as backhoes and transportation,
In a power working machine equipped with a leveling machine as a leveling work machine, the leveling machine and the backhoe are installed in the machine body in opposite directions, and each work is performed separately. Measures were taken to stabilize the aircraft using the aircraft.
Moreover, the leveling machine was extended outward to improve stability.

(c) Problems that the invention aims to solve However, in order to improve efficiency, it is not uncommon for a excavator to be installed on a swivel stand and rotated 180 degrees to perform excavation work on the leveling machine side. When performing swing excavation work by slightly swiveling the swivel table for excavation, etc., in the conventional square-shaped earth removal plate, the support arm of the backhoe or the hydraulic cylinder for tilting the same arm is used to move the above-mentioned square-shaped earth removal plate. This had the disadvantage that it interfered with the upper edge corners of the earthen plates, damaging both of them and hindering work.

(D) Means to solve the problem In this invention, a blade with a width approximately equal to that of the running body and a concave curve at the rear with open left and right ends is connected to the running body via a support beam, and a non-interfering section is formed at the upper left and right edges of the blade by cutting out a non-interfering section with a downward slope toward the outside. Moreover, the non-interfering section of the sloping cutout has approximately the same width as the track, and further, the sloped bottom of the non-interfering section is configured to be located approximately at the rear top of the concave curve of the blade. When the support arm supporting the bucket shovel is rotated downward with the left and right parts of the swivel base partially rotated, the hydraulic cylinder for operating the support arm moves through the non-interfering section,
The present invention provides a blade for leveling work in a power working machine, which is designed not to come into contact with the upper left and right edges of the blade.

(E) Embodiment To explain an embodiment of the present invention shown in the drawings, A is the main body of a power working machine, and a traveling machine body 1 equipped with a track device 8 loaded with a crawler track 7, and an upper part of the traveling machine body 1. It consists of a swivel table 2 which is rotatably provided on the swivel base 2.

The traveling body 1 is provided with a leveling machine 4, a support beam 9 is pivotally attached to the front machine frame, and a soil removal plate 3 is provided at the tip of the support beam 9.

The swivel base 2 is provided with a bucket shovel 5, the base end of a support arm 10 is pivotally mounted 10' to the frame of the swivel base 2 so as to be tiltable, and a bucket shovel 11 is pivotally mounted to the tip of the arm 10. It becomes.

In addition, the base end of a hydraulic cylinder 12 whose tip is pivoted at the midpoint of the arm 10 is pivoted to the backhoe 5 at a position below the pivot point 10', and is supported by the contraction operation of the hydraulic cylinder 12. Arm 1
The hydraulic cylinder 12 is configured to be located on the front side of the front edge 15 of the support arm 10 when the support arm 10 is tilted. However, the hydraulic cylinder 12 is configured to be located in the non-interference portion 6 when the support arm 10 is in the tilted position, so that the hydraulic cylinder 12 does not interfere with the earth removal plate 3. Note that 13 in the figure is a rod of the cylinder 12.

The rod 13 of the hydraulic cylinder 14 pivotally connected to the support arm 10 is connected to the bucket shovel 11.
The bucket shovel 11 is rotated by operating the rod 13.

In such a configuration, the gist of the present invention is that the earth removal plate 3
This structure will be explained in detail below.

That is, the earth removal plate 3 has approximately the same width as the traveling body 1, is formed into a rear concave curved surface with left and right side ends open, and the left and right corners of the upper edge of the earth removal plate located in front of the crawler track 7 are cut. The non-interference parts 6, 6 are formed by the inclined hem part 6.
-1 and 6-1 are configured to be located approximately at the rear apex of the concave curved surface of the earth removal plate 3.

(f) Effect When performing particularly deep excavation work, the earth removal plate 3 is positioned on the side of the excavation point, and the earth removal plate 3 is made to play the role of an outrigger, and the position shown in the imaginary line in Figure 2 In addition to frontal ditch digging work such as this, side ditch digging as shown by the solid line in Figure 2, i.e.
Support arm 10 supporting bucket toshovel 11
If the excavation work is carried out with only the swivel table 2 partially swiveled to the left or right side while holding it in the same direction, it is possible to smoothly form a deep groove with at least approximately the same width as the width of the machine body. be.

At this time, when the swivel table 2 partially rotates, the support arm 10 and the hydraulic cylinder 12 for operating the arm 10 move up and down while being displaced rearward relative to the earth removal plate. Therefore, in order to keep the excavation depth of the trench constant, the support arm 10 must be rotated further downward than when digging a trench from the front, and therefore, the hydraulic cylinder 12 is Although the cylinder 12 is located further below than the support arm 10, the non-interference part 6 of the earth removal plate 3 prevents the cylinder 12 from interfering with the upper edge of the earth removal plate 3. It can be rotated sufficiently downward and excavation work can be carried out reliably.

(g) Effect According to the present invention, the non-interference section can reliably prevent the hydraulic cylinder from interfering with the blade during the swing digging operation described above, and there is no risk of interfering with excavation work on the left and right sides of the front of the machine body.

[Brief explanation of the drawing]

Fig. 1 is an overall side view showing a power working machine equipped with the earth removal plate for leveling work of the present invention, Fig. 2 is a plan view of the same, and Fig. 3 is a front view showing the earth removal plate of the invention. . DESCRIPTION OF SYMBOLS 1... Traveling machine body, 2... Turning table, 3... Earth removal plate, 4... Leveling machine, 5... Backhoe, 6... Non-interference part, 6-1... Slanted hem part, 7... Tracks, 8...
...Track device, 10...Support arm.

Claims (1)

[Scope of utility model registration request] On the traveling body 1, soil discharge plates having a width substantially the same as the width of the body 1 and having a concave curve at the rear with open left and right ends are connected via support beams 9.
Non-interference parts 6, 6 are formed on the left and right upper edges of the holder, and the non-interference parts 6, 6 are cut out in a downwardly sloping shape toward the outside.
The non-interference parts 6, 6 of the inclined notch have approximately the same width as the crawler belt 7, and furthermore, the inclined hem part 6 of the non-interference part 6, 6
-1 and 6-1 are configured to be located approximately at the rear top of the concave curve of the earth removal plate 3, and when the left and right portions of the swivel base 2 are partially swiveled, the support arm 10 supporting the bucket shovel 11 rotates and descends. When this occurs, the hydraulic cylinder 12 for operating the support arm 10 is prevented from coming into contact with the left and right upper edges of the earth removal plate 3 through the non-interference parts 6, 6. Earthen board.