JPS5824996Y2 - Kutsusakuki - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for attaching a boom and a driver's cab to the body of an excavator equipped with a revolving body. When changing the position, it is not necessary to have special drive equipment for each, and it is possible to adjust the normal excavation work posture (positioning the work body on the center line of the machine and performing excavation work) and its maneuvering posture, as well as side ditch digging. It is an object of the present invention to provide a mounting device for a boom and a driver's cab that can be easily changed to a working posture (a posture for performing excavation work with a working body deviated from the center of the machine body) and a suitable operating posture thereof.

Hereinafter, an embodiment of the invention will be explained with reference to the drawings. In FIGS. 1 to 5, 1 is a running body, and 2 is a swinging body, which is rotatably mounted on the running body 1 via a ball race 3. .

Reference numeral 4 denotes a bracket to which the base of the boom 5 is pivotally connected with a pin 6.

Reference numeral 4' denotes a board on which the bracket 4 is fixedly mounted, and the board 4' is rotatably pivoted to the front part of the revolving body 2 with a pin 7, and is located at approximately the center position on the revolving body 2 and in the width direction of the aircraft body. It is fixed with bolt 8 at the offset position.

Reference numeral 9 denotes a driver's cab installed on the base plate 4' of the bracket 4, which houses various control devices for the entire aircraft.

A boom cylinder 10 is equipped with a piston for raising and raising the boom 5, and its lower end is pivotally connected to the base plate 4' of the bracket 4 via a pin 11.

12 is a tapped hole for a bolt 8 that fixes the bracket 4 to the revolving body 2.

Since the present invention is configured as described above, the boom 5
When changing the position of the work body installed in the ditch digging work position, the boom cylinder 10 is operated to lower the boom 5 and the work body at the tip is placed on the floor.

Thereafter, the mounting bolts 8 of the bracket 4 to the revolving body 2 are removed, and the existing control equipment in the operator's cab 9 is operated to rotate the revolving body 2 by an appropriate amount (in FIG. 3, the revolving body 2 is rotated by θ). ° Turning to the right.

), the base plate 4' of the bracket 4, to which the base of the boom 5 is pivoted around the work body that has landed on the floor, is pushed around via the pin 7, and the mounting position of the base plate 4' of the bracket 4 on the revolving body 2 is changed. is changed, and the position of the operator's cab 9 is also changed together with the board 4'.

After re-fixing the bracket 4 on the rotating body 2 at this changed position with bolts 8, the operating device installed in the operator's cab 9 is operated again to rotate the rotating body 2, and the work body is moved along the traveling direction. When the ditch position is corrected, the operation of changing the position of the work body to the ditch digging position and the operation of changing the installation position of the operator's cab 9 are completed at the same time.

In addition, to change to the normal excavation work posture, the above-mentioned operation may be reversed.

As described above, in the present invention, the bracket 4 on which the boom 5 equipped with the work body is pivotally attached is rotatably attached to the front part of the rotating body 2 by the pin 7, and the bracket 4 is pivotably attached to the front part of the rotating body 2. , attach the bracket 4 to the position offset in the width direction of the fuselage using the bolt 8 and the screw hole 1.
This bracket 4 is fixed with a 2nd grade fixing tool after modification.
Since the operator's cab 9 is installed on the board 4' of the machine, when changing the position of the work body to the trench digging position with the work body deviated from the center of the body, the mounting bolts 8 must be removed and the rotation operation of the rotating body 2 must be performed. By simply changing the attachment position of the bracket 4 to the revolving structure 2, the installation position of the driver's cab 9 can be changed at the same time.

Therefore, there is no need to provide a special cylinder mechanism or screw mechanism to deflect the work body from the center of the machine body, so it is possible to provide a low-standing excavator, and moreover, The installation position of the operator's cab 9 can be the same as that in the normal excavation work posture, and there are no inconveniences such as the operator's field of view being restricted, making it possible to excavate side ditches with high efficiency in the same way as in normal excavation work. It has the effect of

[Brief explanation of drawings]

Figure 1 is a plan view of the excavator in a normal digging position, Figure 2 is a side view of the same, Figure 3 is a plan view of the excavator in a trench digging position, and Figure 4 is taken along line A in Figure 3. Enlarged front view of main parts, No. 5
The figure is an enlarged side view of the main part taken along line B in FIG. 4. 1... Running body, 2... Rotating body, 3...
...Ball race, 4...Bracket, 4
′...(bracket 4) board, 5...
・Boom, 6...pin, 7...pin,
8...Bolt, 9...Driver's cab, 10.
...Boom cylinder, 11...Pin, 1
2...(Bolt 8) tapped hole.

Claims (1)

[Scope of utility model registration request] A bracket 4 is rotatably mounted on the front part of the revolving body 2 with a pin 7, and the base end of the boom 5 and the driver's cab 9 are installed on the upper surface of the bracket 4, and the rear or middle part is equipped with a bracket 4. A fixing through hole for bolts, etc. is drilled in the rotating body 2, and an appropriate number of bolts are inserted into the rotating body 2 along a trajectory drawn by the fixing device through hole on the rotating base when the bracket 4 is rotated about the pivot point. An excavator characterized in that a fixture attachment device such as a hole is installed to make the attachment position of the bracket 4 to the revolving body 2 variable.