JPH11117344A - Excavator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily carry out works by fixing an excavating rod by a bracket at the front end of an arm provided in a vehicle body and equipping a freely movable bucket at the inside of the excavating rod so as to make it possible to fix the bucket at both actuating and retracting positions. SOLUTION: An arm 20 is movably provided at the front part of a vehicle body 12 and a breaker 24 having an excavating rod 22 is fitted to the front end of the arm 20 through a bracket 26. One end of a bucket 30 is pivot by a shaft pin 28 so as to able to swing at the front end side of the bracket 26 and under the breaker 24, and it is held and fixed to the bracket 26 by a detachable fixining pin in the vicinity of the shaft pin 28. When excavating a rock in a tunnel, the bucket 30 is fixed to the inside of the bracket 26 with the fixing pin to retract it. And when changing over the work to a loading work of muck, the fixing pin is drawn and the bucket 30 is swung on the shaft pin 28 and fixed to the excavating rod 22. After that, soil is scraped by the bucket 30. In this way, as the changeover work can be easily done, the excavating work can be easily carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavator which is used for excavating earth and sand such as tunnels and ground and rocks, and has a bucket for scraping excavated earth and sand and rocks.

[0002]

2. Description of the Related Art Conventionally, an excavator having a bucket has a structure in which, after excavating rocks by a breaker, when removing sediment or rock deposited below, a breaker having a drill rod is once removed and replaced with a bucket. there were.

[0003]

In the case of the prior art described above, when switching between excavation by a breaker and scraping by a bucket, it is necessary to remove the bucket or the breaker and then attach the other breaker or bucket. This replacement work was troublesome. Further, there is a danger that a worker's finger or the like may be pinched by the machine in a switching operation in a narrow place or a dark place.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide an excavator which can easily switch between a breaker and a bucket and can perform work easily and safely. I do.

[0005]

According to the present invention, there is provided an excavator in which a bucket is provided at a tip of a bracket having a drilling rod, and the bucket can be fixed to the inside of the bracket or to the drilling rod with a detachable fixing pin as required. It is. Further, the excavator has a vehicle body provided with a traveling device, a sediment intake port and a transportation device, an arm provided on the vehicle body, a drilling rod fixed to a tip of the arm with a bracket, and A bucket is provided at the tip and is retractable with respect to the excavating rod.

During the excavation, the swingable bucket is fixed to the inside of the bracket by a detachable fixing pin. At the time of sediment loading, the fixing pin that fixed the bucket inside the bracket is removed, and the bucket is fixed to the excavating rod with a detachable fixing pin at the top of the bucket so that the bucket can be used. You can do it.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an excavator used for excavation work in a tunnel 1 according to an embodiment of the present invention. The excavator according to this embodiment includes a traveling device 10
Has a known structure including a cockpit 14, and performs a series of operations from rock excavation to shear loading on the cockpit 14. The vehicle body 12 is provided with a belt conveyor (not shown) that transports the excavated earth and sand to a rear soil transport trolley 15.
After the sediment is taken in 6, the sediment can be carried to the sediment discharge port 18 behind the vehicle body 12 by a belt conveyor (not shown).

An arm 20 is swingably provided in front of the vehicle body 12, and a breaker 24 having a drilling rod 22 for tunnel excavation is sandwiched between brackets 26 at the end of the arm 20. By arm 2
It is attached to 0. Further, a bucket 30 is provided below the breaker 24 on the distal end side of the bracket 26. The bucket 30 has one end pivotally supported by a pivot pin 28 and is held and fixed to the bracket 26 by a detachable fixing pin 32 near the pivot pin 28. On the back side of the bucket 30, a pair of locking projections 34 that can be positioned on both sides of the excavating rod 22 are provided, and the locking projections 34 have shaft holes 36 facing each other.
Are formed.

Next, a method of switching the bucket 30 will be described. First, when excavating the bedrock 2 of the tunnel 1, as shown in FIG. 1, excavation work with a drill rod 22 by a breaker 24 is required. Therefore, as shown in FIG. 3, the bucket 30 fixed to the bracket 26 by the shaft pin 28 is fixed to the inside of the bracket 26 by the fixing pin 32 provided near the shaft pin 28, and obstructs the excavation work. They have been evacuated so as not to become.

Next, as shown in FIGS. 4 and 5, when the work is switched from excavation to the stacking operation as shown in FIG. 2, the fixing pin 32 for fixing the bucket 30 to the bracket 26 side is removed as shown in FIGS. Then, the bucket 30 is swung about the shaft pin 28 to be locked on the excavating rod 22 of the breaker 24. In this locking, the locking projections 34 of the bucket 30 are positioned on both sides of the drilling rod 22, the fixing pins 32 are inserted into the shaft holes 36 outside the drilling rod 22, and the bucket 30 is held and fixed to the drilling rod 22. As a result, the bucket 30 is
2, the work can be performed stably without fluttering.

Then, in order to perform the excavation work again, the bucket 30 is swung toward the bracket 26 and the fixing pin 32 is rotated.
To fix the bucket 30 to the bracket 26.

According to the excavator of this embodiment, the switching between the excavating operation and the stacking operation is performed by the breaker 24.
There is no need to replace the bucket 30 with the
It is only necessary to remove the fixing pin 32 and swing the bucket 30, and to attach the fixing pin to the bracket 26 or the excavating rod 22. The switching operation is extremely easy and can be performed in a short time.

As shown in FIGS. 6 and 7, a bracket 26 is attached to the tip of the arm 20 of the ordinary power shovel 36. As shown in FIG.
And the breaker 24 and the bucket 30 may be provided in the same manner as in the above embodiment.

As a result, as shown in FIG. 6, the bucket 30 is evacuated and rocked by the breaker 24, and then the bucket 30 is fixed to the excavating rod 22 as shown in FIG. A scraping or the like can also be performed.

Also in this embodiment, as in the above-described embodiment, the operation by the breaker 24 and the bucket 30 can be easily switched by a simple operation, and efficient operation can be performed.

The structure and type of the bucket and the breaker of the excavator of the present invention are not limited, and can be used for various excavation operations.

[0017]

According to the excavator of the present invention, the end of the bucket is pivotally supported on the inside of the tip of the breaker, and it is possible to switch between excavation and stacking only by inserting a pin, thereby improving work efficiency and improving safety. Can be higher.

[Brief description of the drawings]

FIG. 1 is a side view showing an excavation situation of an excavator with a bucket according to an embodiment of the present invention.

FIG. 2 is a side view showing a state of taking in earth and sand of the excavator with a bucket according to the embodiment of the present invention.

FIG. 3 is a schematic side view showing an embodiment of the excavator at the time of excavation according to the present invention.

FIG. 4 is a schematic side view showing a state when the bucket of the excavator of the present invention is switched from excavation to stacking.

FIG. 5 is a schematic side view showing an embodiment of the excavator according to the present invention at the time of stacking.

FIG. 6 is a side view showing an excavation situation of an excavator with a bucket according to another embodiment of the present invention.

FIG. 7 is a side view showing a bucket using state of an excavator with a bucket according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Traveling apparatus 12 Body 14 Cockpit 16 Sediment intake 18 Sediment discharge 20 Arm 22 Drilling rod 24 Breaker 26 Bracket 28 Shaft pin 30 Bucket 32 Fixing pin

Claims (4)

[Claims] 1. A body provided with a traveling device, an arm provided on the body, a digging rod fixed to a tip of the arm with a bracket, and an inside of the digging rod at the tip of the bracket. An excavator, wherein the bucket is provided so as to be swingable with respect to the excavating rod, and the bucket is provided so as to be fixed at an operation position and a retracted position. 2. A vehicle equipped with a traveling device and a sediment ingesting / transporting device, an arm provided on the vehicle, a drilling rod fixed to a tip of the arm with a bracket, and a drilling rod provided at a tip of the bracket. And an excavator provided with a bucket capable of retracting with respect to the excavating rod. 3. The excavator according to claim 1, wherein at the time of excavation, the bucket can be fixed inside the bracket with a detachable fixing pin. 4. At the time of sediment collection, the fixing pin fixing the bucket to the inside of the bracket is removed, and a detachable fixing pin on the bucket is attached to the excavation rod so that the bucket can be used. The excavator according to claim 1, wherein the excavator is fixable.