JPS60184191A - Drilling machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an excavator, and particularly to an excavator with excellent vertical excavation performance.

[Background of the invention]

FIGS. 1 to 3 are explanatory diagrams illustrating vertical excavation in an excavator that does not have a swinging mechanism for a revolving body.

In these figures, l is the running body disposed at the bottom, 2
3 is a revolving body disposed on the upper part, and 3 is a working machine attached to this revolving body 2. In such an excavator, as shown in Fig. 1, the inclination of the revolving body 2 becomes equal to the inclination of the slope on sloped land, and therefore, vertical excavation cannot be realized as it is. In order to carry out the vertical excavation shown by the broken line, it is necessary to form the slope into a flat wall parallel to the horizontal plane as a preliminary work for vertical excavation, as shown in Figure 3, which reduces the efficiency of the work. Cheap.

FIG. 4 is a schematic diagram showing an excavator having a conventional swinging mechanism for a revolving body proposed under such circumstances. In this figure, 1 is a running body, 2 is a revolving body, and 1 working machine is not shown. Reference numeral 4 denotes a turning shaft disposed between the rotating body 2 and the traveling body 1, and the upper portion thereof is fixed to the rotating body 2. A swing shaft 5 forms a swing fulcrum of the swing body 2, and connects a bracket 6 fixed to the swing wheel 4 and a bracket 7 fixed to the traveling structure l. 8 is a cylinder whose upper end is rotatably connected to the rotating shaft 4 and whose lower end is rotatably connected to the traveling body 1; This is the center joint that leads to the motor.

When performing vertical excavation on a slope, etc., the excavator configured in this way swings the revolving body 2 around the swing shaft 5 by driving the cylinder 8, and performs flattening work on the slope. Vertical excavation can be performed using a working machine (not shown) without the need for

However, since this excavator has a swing shaft 5 disposed between the traveling body 1 and the swing shaft 4, when the swing structure 2 is turned 90 degrees from the state shown in FIG. , as illustrated by the solid line in FIG. 5, the side surface of the rotating body 2 and the axial direction of the swing shaft 5 are parallel to each other, so that the swinging motion of the rotating body 2 as shown by the broken line in FIG. If the rotating structure 2 is arranged as shown in the solid line in Fig. 5 and vertical excavation is performed on a slope, etc., the rotating structure 2 must be rotated to the configuration shown in Fig. 4. Otherwise, work efficiency tends to decrease.

[Purpose of the invention]

The present invention has been made in view of the actual situation in the prior art, and its purpose is to provide an excavator that can swing its revolving body no matter where it is located.

[Summary of the invention]

In order to achieve this object, the present invention has a configuration in which a universal mechanism is provided between the revolving body disposed in the upper part and the traveling body disposed in the lower part.

(Embodiments of the invention) Hereinafter, the excavator of the present invention will be explained based on the drawings.

Figures 6 to 8 (a) and (b) are explanatory diagrams showing one embodiment of the present invention, in which Figure 6 is an exploded perspective view of the main part, Figure 7 is an exploded side view of the main part, and Figure 8 is an exploded side view of the main part. (a) and (b) are enlarged sectional views of main parts of the hydraulic cylinder shown in FIG. 6. In these figures, 1 is a running body, 2 is a revolving body, and 4 is a turning axis, which are the same as those described above. Note that the upper end of the rotating shaft 4 is fixed to the rotating body 2. Further, the working machine mounted on the revolving structure 2 is not shown. 11 is an upper plate fixed to the rotating shaft 4, 12 is a lower plate fixed to the traveling body 1, and 13 is an upper plate 1.
1 and a lower plate 12.

Two opposing side edges 14 and 15 of the four side edges of the upper plate 11 are formed with bracket portions 18 having holes 17 into which pins 16 having spherical portions can be fitted. , a shaft 19 is provided upright on the side end portion 14 where one of the bracket portions 18 is formed, and directly above the hole 17, and the side on which this shaft 19 is provided is A shaft 21 is erected at the center of a side end 20 perpendicular to the end 14.

In addition, the above-mentioned upper plate 1 of the four side ends of the lower plate 12
The side end portion 14, 1 in which the bracket portion 18 of 1 is formed
The two side ends 22.2 are located at a position orthogonal to 5.
3 is formed with a bracket portion 26 having a hole 25 into which a pin 24 having a spherical portion at the end can be inserted, and a shaft 27 is erected at the side end portion 22 at a position corresponding to the shaft 21 described above. At the side end 28 perpendicular to the side end 22 on which the shaft 27 is erected, there is a shaft 2 at a position corresponding to the shaft 19 as described above.
9 is set up.

Further, the above-mentioned combined body 13 has holes 31 formed in its circumferential side 30 at 90° intervals into which the above-mentioned pins 16, 24 are loosely fitted. 32. 33 is a cylinder, for example, a hydraulic cylinder, whose one end is attached to a shaft 19 erected on the upper plate 11 and the other end is attached to a shaft 29 erected on the lower plate 12; This is a cylinder, for example, a hydraulic cylinder, which is attached to a shaft 21 that is attached to the lower plate 12, and whose other end is attached to a shaft 27 that is erected on the lower plate 12. Note that the end portions of the hydraulic cylinders 32 and 33 are shown in Fig. 8 (a).
), a spherical bearing is formed which engages the spherical portion of the shaft 19.21, so that the hydraulic cylinders 32, 33 and the shaft 19.21 are relative to each other as shown in FIG. 8(b). It is possible to rotate.

Upper board 11. Lower plate 12, joint 13, pin 16
, 24, shaft 19, 2], 27, 29, hydraulic cylinder 32
．． 33 constitutes a universal joint or universal mechanism.

In this embodiment, when performing vertical excavation on a slope, etc., by expanding and contracting the hydraulic cylinder 32, the upper plate 11 and the combined body 13 fit into the hole 25 of the bracket part 26 of the lower plate I2. Using the inserted pin 24 as a fulcrum -
C rotates in the direction of the arrow 34, the swing wheel 4 and the swing body 2 rotate in the direction of the arrow 34, and the hydraulic cylinder 33
By expanding and contracting the upper plate 11, the hole 3 of the joint body 13 is
The rotating wheel 4 and the rotating body 2 rotate in the direction of the arrow 35 with the pin 16 loosely fitted in the rotating body 1 as a fulcrum. Therefore, by controlling the expansion and contraction of both hydraulic cylinders 32 and 33, the revolving body 2 can be swung in any position.

In the above embodiment, the upper plate lI, the lower plate 12, and the combined body 1
3. Although the universal mechanism consisting of the hydraulic cylinders 32, 33, etc. is disposed between the swing wheel 4 and the traveling body 1, the present invention is not limited thereto, and the above-mentioned universal mechanism consisting of the hydraulic cylinders 32, 33, etc. is disposed between the swing body 2 and the swing axis 4. It is also possible to arrange a universal mechanism such as this.

〔Effect of the invention〕

As described above, since the excavator of the present invention has a configuration in which a universal mechanism is provided between the revolving body and the traveling body,
The rotating body can be swung in any position, making it possible to excavate vertically on sloping ground without the need to rotate the rotating body, which has the effect of improving work efficiency compared to conventional methods. .

[Brief explanation of the drawing]

FIGS. 1 to 3 are explanatory diagrams illustrating vertical excavation in an excavator that does not have a swinging mechanism for a rotating body, and FIG. 4 is a schematic diagram showing an excavator that has a conventional swinging mechanism for a rotating body. FIG. 5 is an explanatory diagram illustrating a malfunction in the excavator shown in FIG. 4, and FIGS. Figure ε is an exploded perspective view of main parts, No. 7
The figure is an exploded side view of the main part, and FIGS. 8(a) and 8(b) are enlarged sectional views of the main part of the hydraulic cylinder shown in FIG. 6. l... Running body, 2... Rotating body, 3...
... Work equipment, 4 ... Rotating axis, 11 ...
... Upper plate, 12... Lower plate, 13... Combined body, 14, 15, 20. ．． 22,23゜28...
...Side end, 16.24...Pin, 17゜25
．． 31... Hole, 18.26... Part to bracket 1, 19.21, 27.29... Shaft, 3
o... Circumferential part, 32.33... Hydraulic cylinder. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. It has a traveling body disposed at the bottom and a working machine. An excavator comprising a revolving body disposed at an upper part and a rotating shaft disposed between these traveling bodies and the revolving body, and in which the revolving body can swing with respect to the traveling body, the above-mentioned revolving body An excavator characterized in that a universal mechanism is provided between the traveling body and the traveling body.