JPS5944466B2 - Swivel type power working machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in a rotating backhoe and the like.

In a conventional machine of this type, an excavator a mounted on the machine frame body was mounted so as to be movable in the left-right direction via a connecting body C between the machine frame body and the machine frame body, as shown in FIG.

Therefore, there are drawbacks such as the inability to securely secure the excavation rig a, or the inability to move the rig to a desired angle for work, making it impossible to perform excavation work efficiently. Ta.

Therefore, the present invention eliminates the above-mentioned drawbacks by configuring the excavation device installed in the machine frame body so that it can be fixed at any angle in the left and right direction using a hydraulic cylinder.The present invention also provides a rotating type excavator that is simple in structure and easy to operate. The present invention provides a power working machine.

An embodiment of the present invention will be described below in detail with reference to the drawings. Reference numeral 1 denotes a machine frame body of a power working machine, which is rotatably mounted on the upper part of a crawler type traveling device 2.

Reference numeral 3 denotes a side U-shaped bracket fixed to the front part of the machine frame body 1, to which the base 5 of the excavating device 4 is pivotally attached.

Reference numeral 6 denotes a main boom of the excavation device 4, and its lower end is attached to the bracket 3 via a fitting 7.

Reference numeral 8 denotes a fulcrum pin fitted vertically into the bracket 3, which pivotally supports the mounting fitting 7 and the entire excavation device 4 so as to be movable in the left-right direction.

9 is a connecting seat that protrudes from the left side of the mounting bracket 7 and connects it to the machine frame body 1.
The tip of the connecting rod 11 of the hydraulic cylinder 10 whose base is attached to the hydraulic cylinder 10 is pivotally supported.

Reference numeral 12 denotes a connecting seat protruding from the right side of the mounting bracket 7. The leading end of the fixed frame 13 can be freely connected to the connecting seat 12, and the base end of the fixed frame 13 can be connected to the front end surface of the machine frame main body 1. In,
A pivot bracket 23 is protruded from a location located outward from the pivot position between the connecting seat 12 and the fixed frame 13, and is pivoted 24 to the bracket 23.

Reference numeral 14 denotes a mounting seat, which protrudes from the front end surface of the machine frame main body 1 located outward from the base end pivot portion 24 of the fixed frame 13.

When the main boom 6 is moved from side to side with respect to the bracket 3, the tip of the fixed frame 13 is removed from the connecting seat 12 of the mounting bracket 7, and the fixed frame 13 is moved around the base end pivot 24. It is rotated outward and connected to a mounting seat 14 protruding from the front end surface of the machine frame main body 1 for storage.

Further, 15 and 16 are hydraulic pipes provided in the hydraulic cylinder 10, 17 is a connecting pin that is inserted into the tip of the fixed frame 13, and 1
Reference numeral 8 denotes a fulcrum pin that pivotally connects the base of the main boom 6 to the mounting bracket 7.

Further, 19 is a turning hydraulic motor that turns the machine frame body 1 relative to the traveling device 2.

20 is a turning center. 21 is an engine mounted at the rear of the machine frame body 1, and 22 is a driver's cabin.

The present invention has the above-described configuration. Therefore, when performing excavation work by positioning the excavating device 4 at the center of the front of the machine frame body, as shown in FIG. is located at the center of the machine, and its base end is pivoted to the connecting seat 12 on the right side of the mounting bracket 7 via a pivot bracket 23 to the front end surface of the machine frame main body 1 located on the outside of the connecting seat 12. Connect the tip of the fixed frame 13 supported by the support 24 to the connecting pin 17
If connected at , a truss-like strong fixing structure will be formed, with the connecting portion, the proximal pivot portion 24 of the fixed frame 13, and the pivot portion between the mounting bracket 7 and the bracket 3 as the vertices, respectively.
Therefore, the machine frame body 1 and the excavating device 4 such as the main boom reliably rotate together, and the excavating device 4 moves up and down to perform excavation work as shown in FIG. 2.

In a narrow place where the excavation work site is such that the machine frame body 1 cannot be rotated, the machine frame body 1 is fixed on the traveling device 2, and the connecting pin is inserted into the connecting seat 12 of the mounting bracket 7. 17 and rotate the fixing frame 13 toward the outside of the front end surface of the machine frame main body 1 where there are no interfering objects, that is, in a clockwise direction, it can be quickly and easily connected to the separately provided mounting seat 14. It is something that can be done.

Then, as shown in FIG. 4, pressurized hydraulic oil is appropriately introduced into the hydraulic pipes 15 and 16 of the hydraulic cylinder 10, and the connecting rod 11 of the hydraulic cylinder 10 is expanded and contracted to move the main boom side to the left and right around the fulcrum pin 8. It is something that forces you to do something.

Further, as shown in FIG. 5, it is also possible to perform excavation work by rotating the main boom side to the left and right with respect to the machine frame body while rotating the machine frame body 1 relative to the traveling device.

As described above, in the case of the present invention, the machine frame main body is placed on the traveling device so as to be freely pivotable, and the excavating device which can be raised and lowered is attached to one side of the machine frame main body, and the excavating device is moved horizontally by a hydraulic cylinder. Since this is a swing-type power working machine that can be rotated and fixed freely, the machine frame body can be rotated with respect to the traveling device, and the excavation equipment can be rotated with respect to the machine frame body through the fixed frame. Since it can be rotated and fixed to the left and right, excavation work can be performed by rotating the machine frame body, and it is also possible to perform excavation work by moving only the excavation equipment left and right, making it easy to perform excavation work even in narrow work sites. This makes it easy to load earth and sand onto trucks.

In addition, since the excavation equipment can be rotated left and right using a hydraulic cylinder, the rotation angle of the main boom etc. can be adjusted arbitrarily, and therefore the grooves etc. formed in the ground can be finished with accurate dimensions, and the overall It has a simple structure and allows for efficient work.Furthermore, a hydraulic cylinder is connected to one side of the connecting seat provided on both sides of the mounting bracket at the base end of the main boom, and a hydraulic cylinder is connected to the other side. The fixed frame is connected to form a truss structure, so when the main boom is fixed in a straight forward direction, the fixed frame can be used to securely fix the main boom. To rotate and swivel, remove the tip of the fixed frame from the connecting seat and rotate it toward the outside of the front side of the machine frame body, where there are no obstacles, around the base end pivot of the fixed frame. By connecting the tip to the mounting seat, it can be stored and fixed quickly and easily, and the structure is simple and does not impede left and right rotation of the main boom. It is effective.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Figure 1 is an overall side view of a power working machine equipped with the present invention, Figure 2 is a plan view of the same, and Figures 3 and 4 are illustrations of the present invention. Enlarged plan view of main parts,
FIG. 5 is a plan view showing an operating state, and FIG. 6 is a schematic diagram showing a conventional type. 1... Machine frame body, 2... Travel device, 4... Excavation device, 10... Hydraulic cylinder.

Claims (1)

[Scope of Claims] 1. A machine frame body 1 is placed on a traveling device 2 so as to be freely pivotable, and an excavation device 4 that can be raised and lowered is attached to one side of the machine frame body 1, and the main body of the excavation device 4 is Attach the base end of the boom 6 to the mounting bracket 7.
It is pivoted to the bracket 3 of the fuselage main body 1 via a vertical fulcrum pin 8 so as to be rotatable left and right, and connecting seats 9 and 12 are provided in series on both sides of the mounting bracket 70, and the connecting seat 9 on one side is Connecting rod 11 of hydraulic cylinders 9-10 whose bases are attached to the machine frame body 1
The leading end of the fixed frame 13 is removably pivoted to the connecting seat 12 on the other side, and the connecting seat 12 and the fixed frame 13 are connected with the base end of the fixed frame 13 at the front end surface of the machine frame main body 1. The fixing frame 13 is pivoted 24 at a location located outward from the pivot position with the tip, and when the tip of the fixing frame 13 is removed from the connecting seat, the fixing frame 13
The connecting seat 12 and the fixed frame 13 are connected with the base end pivot portion 24 as the center.
A rotating power working machine configured to be able to be stored and fixed by rotating outward from a pivot point with the tip. 2. The machine frame body 1 is placed on the traveling device 2 so as to be freely pivotable, and the excavation device 4, which can be raised and lowered, is mounted on one side of the machine frame body 1, and the base end of the main boom 6 of the excavation device 4 is attached. , mounting bracket 7
The mounting bracket 70 is pivoted to the bracket 3 of the fuselage main body 1 via a vertical fulcrum pin 8 so as to be rotatable left and right, and connecting seats 9 and 12 are provided in series on both sides of the mounting bracket 70, and the connecting seat 9 on one side is The tip of a connecting rod 11 of a hydraulic cylinder 10 whose base is attached to the machine frame body 1 is pivotably supported, and the tip of a fixed frame 13 is removably pivoted to a connecting seat 12 on the other side. The machine frame body 1
On the front end surface, the machine frame is pivoted 24 at a location located outward from the pivot position between the connecting seat 12 and the tip of the fixed frame 13, and is located outward from the base end pivot portion 24 of the fixed frame 13. Main body 1
A mounting seat 14 is provided protrudingly provided on the holder, and when the distal end of the fixed frame 13 is removed from the connecting seat 12, the fixed frame 13 is rotated in the direction of the mounting seat 14 about the base end pivot 24, and the distal end A swivel-type power working machine configured so that it can be stored and fixed by connecting it to a mounting seat 14.