JPS6024765Y2 - hydraulic drilling rig - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a hydraulic excavation device for excavating the ground, etc.
In particular, the attachment of the packet is concerned with the structure, so that the packet can be easily and securely fixed on the drive arm and that the orientation of the packet can be changed easily and precisely.

(Background of the invention) The packet of this type of hydraulic excavator is generally capable of changing its direction depending on the working conditions.

That is, for example, when excavating below the ground surface, the opening of the packet is directed inward, and when excavating above the ground surface, the opening of the packet is directed outward.

In this way, the orientation of this type of packet is generally changed depending on the working conditions, but conventionally the structure of attaching this type of packet to the drive arm is quite complex, and it is difficult to easily and accurately change the orientation of this type of packet. There have been various problems such as difficulty in securing the packet to the drive arm, and difficulty in firmly fixing the packet to the drive arm without rattling.

(Summary of the invention) The present invention was developed in view of the above circumstances, and the present invention is a method for attaching the packet so that the direction of the packet can be changed easily and accurately, and the packet can be securely fixed to the drive arm. is intended to provide structure.

To achieve this, the present invention provides a pin in the center of the upper plate of the packet, fits the pin into the insertion hole of the pedestal attached to the drive arm, and allows the packet to freely rotate around the pin. In order to make it possible to change the direction of the packet by using the pin, and to securely fix the packet to the pedestal with a simple structure without rattling, the pin is formed with a wedge hole, and a wedge body is driven into the wedge hole. The packet is fixed to a pedestal.

Further, in order to quickly and accurately change the direction of the packet, the packet and the pedestal are provided with a positioning portion that defines a rotation angle of 180 degrees for the packet.

Example Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of the hydraulic excavation device according to the present invention near the packet, FIG. 2 is a plan view, and FIG. 3 is a front view.
is a substantially box-shaped packet, which is attached to the lower surface of the pedestal 2 by means described later with its opening 1a facing outward.

The pedestal 2 consists of a flat plate 2a and a pair of vertical plates 2b, 2b erected on both sides of the upper surface of the flat plate 2a, and the ends of driving arms 3a, 3b are attached to each vertical plate 2b, 2b. They are connected via a rod 4.

Reference numeral 5 denotes a pin erected at the center of the upper plate 1b of the packet 1, which is fixed to the upper plate 1b by a welding part 6 as shown in FIG. It is rotatably fitted into the opening 7, and the bearing is supported by a plate 8.

With the packet 1 attached to the pedestal 2 in this way, the upper surface of the upper plate 1b of the packet 1 comes into contact with the lower surface of the pedestal 2, and the packet 1 can freely rotate around the pin 5 with respect to the pedestal 2. ing.

9 is a fixing wedge body, and when the pin 5 is inserted into the insertion hole 7 and the packet 1 is attached to the pedestal 2 as described above, a hole is drilled in the upper part of the pin 5 that protrudes above the pedestal 2. The packet 1 is forcibly inserted into the wedge hole 10 in a removable manner to prevent the packet 1 from wobbling.

That is, the pin 5 serves not only as a rotation axis of the packet 1 but also as a driving portion of the wedge body 9 for preventing the packet 1 from wobbling.

Reference numeral 11 denotes a bolt nut for tightening, and bolts are inserted into bolt insertion holes 12 formed in the upper plate 1b and bolt insertion holes 13 formed in the flat plate 2a to tighten the upper plate 1b and the flat plate 2a. is fixed to the pedestal 2, and the pin 5
A total of four are placed around the.

Reference numerals 14a and 14b designate locking portions as positioning portions protruding from opposite corners of the flat plate 2a, and reference numeral 15 designates protrusions as positioning portions provided upright on the packet upper plate 1b. 14a, the opening 1a of the packet 1 faces outward (see solid lines in FIGS. 1 and 2),
It turns inward while in contact with the locking portion 14b (see FIG. 5 and the chain line in FIG. 2).

This device has the above-mentioned configuration. For example, when excavating above the ground surface, the packet opening 1a should be directed outward as shown in Fig. 1, and when excavating below the ground surface, , the packet opening 1a is used facing inward as shown in FIG.

When changing the orientation of the packet 1, remove the wedge body 9 from the pin 5 by hitting it with a hammer, remove all bolt nuts 11, and move the packet 1 to the pin 5.
The orientation of the packet 1 can be easily changed by rotating the packet 1 180 degrees around the center, tightening the bolt and nut 11 again, and driving the wedge body 9 into the wedge hole 10.

In addition, in that case, each insertion hole 12.13 is exactly aligned with the protrusion 15 in contact with the locking portion 14a or 14b, and therefore it takes time and effort to align each insertion hole 12.13. Therefore, the direction of the packet 1 can be quickly and accurately changed.

(Effect of the invention) As explained above, according to the hydraulic excavation device according to the invention, the direction of the packet 1 can be changed extremely easily and accurately.

In addition, the pin 5, which serves as the rotation axis, is formed with a wedge hole 10 and serves as a driving part for the wedge body 9 to prevent unnecessary rattling of the packet 1, so the structure is simple. Moreover, there are various effects such as being able to securely fix the packet 1 to the pedestal 2.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the hydraulic excavation equipment, Fig. 2 is a plan view thereof, Fig. 3 is a front view thereof, and Fig. 4 is a sectional view of the main parts. , FIG. 5 is a side view. 1...Packet, 1b...Top plate, 2.
...Pedestal, 3a, 3b...Driving arm, 5...Pin, 7...Insertion hole, 9...
...Wedge body, 10...Wedge hole, 11...
...Tightening bolts and nuts, 14a, 14b. 15...Positioning section.

Claims (1)

[Scope of utility model registration request] Packet 1 with pin 5 erected in the center of upper plate 1b
and a pedestal 2 which is attached to the driving arms 3a, 3b and is shaped like a fitting hole 7 for the pin 5, and the pedestal 2 of the pin 5 in a state where the pin 5 is fitted into the fitting hole 7. A wedge hole 10 is formed above the wedge hole 2. A wedge body 9 is removably inserted into the wedge hole 10, and a bolt nut 11 for tightening is arranged around the pin 5. 2. A hydraulic excavation device in which the packet 1 and the pedestal 2 are provided with positioning portions 14a, 14b, and 15 that define a rotation angle of 180 degrees of the packet 1 around the pin 5.