JP2556196Y2 - Excavator crane equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane device mounted on an excavator for cutting a root soil into a hemisphere when transplanting a tree.

[0002]

2. Description of the Related Art When transplanting a tree, it is necessary to cut off the root soil (root pot) in a hemispherical shape. However, if this is done manually, it requires much labor and is inefficient. For this reason, as disclosed in JP-A-59-147880, an excavator having a semicircular blade that rotates while vibrating in the rotational direction may be used. In addition, since a large amount of labor is required for removing the cut root mortar from the hole and loading the vehicle into a vehicle, as shown in Japanese Patent Application Laid-Open No. 2-291217, this excavator is equipped with a crane device. There is.

[0003]

However, the crane device of the above-mentioned prior art is installed at the rear of a traveling vehicle body, and its boom passes over a seat on which an operator sits and reaches a digging device in front. Because of the extension, the crane device is large and dangerous. Also, in the case where the excavating device turns in a horizontal plane as in the present invention, there must be a relationship between the turning and the turning of the crane device. The present invention solves the above-described problems. In short, in consideration of the installation position of the crane device, the crane device has a certain relationship between the turning of the excavating device and the turning of the crane device. This makes it possible to reduce the size of the device.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a traveling vehicle having passenger equipment and a vertical support shaft and a horizontal support shaft provided in front of the traveling vehicle and provided on the traveling vehicle. And a frame that can be lifted and a support arm that extends forward by opening the opposite side from one side of the frame, and a semicircular blade that is supported back and forth by the frame and the support arm and that rotates while vibrating back and forth in the rotational direction. In a digging machine comprising a digging device having, and a crane device having a base that can pivot around a vertical axis and a horizontal axis provided on the base, and having an arm that can expand and contract in the longitudinal direction, A crane device for an excavator, wherein the base of the crane device is provided at a position close to a vertical support shaft that is the center of rotation of the excavator and at a position offset toward the support arm. It is those that were subjected.

[0005]

By taking the above measures, that is, since the base column of the crane device is provided near the vertical support shaft of the excavating device provided at the front of the traveling vehicle body, the two are substantially integrated into one place. It can be installed and the arm of the crane device is short enough. Further, since the crane device is provided at a position deviated toward the support arm side of the blade, it does not obstruct the view on the open side of the support arm.

[0006]

1 is a side view of a digging machine according to the present invention, and FIG. 2 is a plan view of the digging machine. The digging machine includes a traveling body 12 having passenger equipment 10 such as a seat on which an operator sits, and a traveling vehicle. It comprises a digging device 14 provided in front of the vehicle body 12 so as to be able to turn and ascend, and a crane device 16 installed at the front of the traveling vehicle body. In FIG. 2, the positions of the digging device 14 and the crane device 16 are shifted for easy understanding.

The traveling body 12 has a chassis 22 rotatably mounted on a traveling frame 20 equipped with a crawler 18 and has a self-propelling function. An engine (not shown) is mounted on the chassis 22. The engine is used as a power source for driving the crawler 18 and driving each unit. In addition, chassis 2
2 is provided with various operation levers 24, a sunshade 26 covering an operator, and the like, in addition to the above-described riding equipment 10.

The digging device 14 comprises a frame 28 which can be pivoted and lowered in front of the chassis 22 and a semi-circular blade 30 which is provided in front of the frame 28 with both end supporting portions arranged back and forth. That is, a vertical support shaft 32 is provided at the front of the chassis 22, a mounting plate 34 is rotatably mounted on the vertical support shaft 32, and a horizontal support shaft 36 is provided on the mounting plate 34.
The frame 28 is rotatably mounted on the frame. The rotation of the mounting plate 34 is performed by the expansion and contraction of a hydraulic cylinder 38 interposed between the mounting plate 34 and the chassis 22, and the elevation is performed by the mounting plate 34.
The expansion and contraction of the hydraulic cylinder 42 attached between the bracket 40 and the frame 28 attached to the bracket 28 are performed.

From one side of the frame 28 (left side in the traveling direction in plan view), a support arm 46 with a bracket 44 hanging down from the tip extends forward, and a drive protruding from the bracket 44 and the front end of the frame 28. Shaft 48 and blade 3
0 are supported at the front and rear ends, respectively. The blade 30 has a circular shape not only in the radial direction but also in the circumferential direction in order to reduce the cutting resistance and enhance the cutting performance, and has a shape in which a part of a spherical surface is broken. A sharp blade 30a is formed at the front end in the traveling direction. The excavator can be replaced with blades 30 of various sizes. To cope with this, the front and rear mounting positions of the support arm 46 can be changed.

As described above, the blade 30 rotates while oscillating back and forth in the rotation direction. However, the vibration force is applied by the vibration generator 64 and the rotation force is applied by the rotation driver 66. Since the specific structures of the vibration generator 64 and the rotary driver 66 are not related to the gist of the present invention, detailed description thereof will be omitted, but in short, the vibration generator 64 imparts a rocking vibration motion to the drive shaft 48. The rotary driver 66 imparts a uniform rotational movement to the drive shaft 48, and the drive shaft 48 eventually performs a vibrating rotational movement in which the movement is combined. .

Next, as for the crane device 16, as shown in FIGS. 1 and 2, this crane device 16 has a jib crane type comprising a base column 110 extending upward and an arm 112 extending horizontally from the base column 110. Use those. The base 110 is a support 11 provided on a chassis 22.
4 is pivotally mounted on a vertical axis 116, and an arm 112 is connected to a horizontal axis 11
At 8 it is mounted so that it can be raised.

Between the base 110 and the chassis 22 and the base 11
0 and the arm 112, respectively.
0 and 122 are interposed.
The base 110 and the arm 1 are expanded and contracted by
Numeral 12 is capable of turning and raising. The arm 112 has a sub arm 124 built therein, and the hydraulic cylinder 12 is also provided between the arm 112 and the sub arm 124.
6, the sub arm 124 can be extended and contracted when the hydraulic cylinder 126 is extended and contracted. In addition, a wire 130 having a hook 128 attached to the tip thereof hangs down from the sub arm 124, and an object can be lifted by raising and lowering the wire 130 with a power source (not shown). Note that the sub arm 124 can extend to almost the center of the blade 30.

By the way, the base 110 of the crane device 16
Shaft 116 supporting the frame and the frame 28 of the digging device 14
Is provided at a position very close to the vertical support shaft 32 that supports. That is, the front and rear positions of the vertical shaft 116 of the crane device 16 are slightly behind the vertical support shaft 32 of the digging device 14, and the left and right positions are slightly biased to the left (the side where the support arm 46 exists). The reason for this arrangement is that
This is to reduce the size of the crane device 16 itself while maintaining the weight balance, and to ensure a sufficient view on the open side of the support arm 46.

FIG. 3 is a side view showing the working state of the digging machine, and FIG. 4 is a plan view. The digging device 14 is turned so that a tree 132 to be digged is brought to the center of the blade 30. Then, at this time, the blade 30
6), the support arm 4
The excavating device 14 is lowered until the tip of the bracket 44 of No. 6 pierces the soil. Next, when the blade 30 is vibrated and rotated to about 180 ° or more, the root soil of the tree 132 is cut into a substantially hemispherical shape. Then, the base column 110 is moved so that the hook 128 of the crane device 16 comes over the tree 132.
Is swiveled and the arm 112 is extended / contracted, and the hook 128 is hung on a root pot or a branch and lifted.

When such excavation work is performed continuously, the root mortar lifted by the crane device 16 is supported by the support arm 4.
Turn to the open side of No. 6 and put it on the ground once before starting the next work. For this reason, it is preferable that the turning angle α of the digging device 14 be equally divided right and left from the center of the traveling vehicle body 12, and the turning angle β of the crane device 16 is equal to the turning angle α of the digging device 14. Cover everything, and
Preferably, the support arm 46 can pivot more toward the open side.

[0016]

[Effects of the Invention] As described above, the present invention is based on the above-mentioned structure, that is, since the digging device and the crane device are provided close to the front of the traveling vehicle body, the structure is unified. As well as maintaining the weight balance. Further, since the arm of the crane device may be short, the crane device can be downsized. Furthermore, since the crane device is provided so as to be biased toward the support arm, the field of view of the open side of the support arm where there is no member is widened and the work is easy. On the other hand, if the swivel angle of the crane device is set to be larger than the swivel angle of the excavator and the arm of the crane device can be extended to the vicinity of the center of the blade, the workability will be improved even if the crane device is downsized. Does not inhibit.

[Brief description of the drawings]

FIG. 1 is a side view of a digging machine.

FIG. 2 is a plan view of the excavator.

FIG. 3 is a side view showing a working state of the excavator.

FIG. 4 is a plan view showing a working state of the excavator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Passenger equipment 12 Running vehicle body 14 Digging device 16 Crane device 28 Frame 30 Blade 32 Vertical support shaft 36 Horizontal support shaft 46 Support arm 110 Base 112 Arm 116 Vertical shaft 118 Horizontal shaft

Claims (3)

(57) [Scope of request for utility model registration] 1. A traveling vehicle body having passenger equipment, a frame provided in front of the traveling vehicle body and capable of turning and raising around a vertical support shaft and a horizontal support shaft provided on the traveling vehicle body, respectively, and from one side of the frame. A digging device having a semi-circular blade that is supported back and forth by a support arm and a frame and a support arm that is extended forward by opening the opposite side and that rotates while oscillating in the rotational direction, and around a vertical axis. In an excavator comprising a pivotable base and a crane device having an arm capable of elevating around a horizontal axis provided on the base and extending and contracting in a longitudinal direction, the excavator pivots the base of the crane device. A crane device for an excavator, wherein the crane device is provided at a position close to a center of a vertical support shaft and at a position offset toward a support arm. 2. The crane device of a digging machine according to claim 1, wherein the turning angle of the crane device is set larger than the turning angle of the digging device. 3. The crane device of a digging machine according to claim 1, wherein the arm of the crane device according to claim 1 or 2 is extendable to near the center of the blade.