JP2503979Y2 - Auger edge - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auger cutting edge which is used by being connected to the tip of an auger body which is rotationally driven by a predetermined driving source when excavating a utility pole hole, for example.

[0002]

2. Description of the Related Art An auger blade of this type can be replaced with respect to the auger body. Depending on the geology of the ground to be excavated, there are prepared auger cutting edges for rock, clay, or sand layers, etc., and select the one suitable for the excavation site at that time and use it. it can.

[0003]

[Problems to be solved by the invention] However, depending on the work site, there is a ground containing a lot of boulders such as cobblestone. In this case, in the existing auger cutting edge, the cutting edge does not sneak well between the stones regardless of the rotation of the auger body, and the diameter of the hole increases, and the boulder rolls only in the hole and is not discharged. Since the hole cannot be excavated to a predetermined depth with this, it is necessary to stop the rotation drive of the auger main body and take out the boulders in the hole manually each time, and the work efficiency is poor. A technical problem of the present invention is to efficiently discharge the boulders together with soil when excavating the ground containing a lot of boulders to improve workability.

[0004]

In order to solve the above-mentioned problems, the auger cutting edge of the present invention is constructed as follows. That is, a main shaft coupled to the tip of the auger body, a screw-shaped blade fixed to the outer periphery of the main shaft , and a continuous blade along the outer peripheral edge of the blade , and
Blade frame formed by rising upward from the outer peripheral edge of the blade, a mouth edge fixed to the lower surface of the blade, and similarly from the tip of the blade in the rotating direction of the blade during excavation.
With respect to this, an excavating blade tip that projects obliquely downward and a pilot bit provided at the tip of the main shaft are provided.

[0005]

In the auger edge of the present invention, when the main shaft and the blade rotate together with the auger body, these dig into the boulder while excavating the boulder by the aforesaid cutting edge fixed to the tip of the blade. Go. The excavated boulders are scooped by the tip of the mouth, placed on the blades, and discharged along with the blades along with the soil and pebbles while being kept by the blade frame from falling.

[0006]

An embodiment of the present invention will be described below with reference to the drawings. Fig. 2 shows the state of excavation work on the ground with many boulders. As can be seen in this drawing, the auger body 10
Has a screw-shaped blade 12, and an auger edge 20 is connected to the tip of the blade 12. Also the auger body 1
The base end portion of 0 is connected to the drive unit of the rotary drive machine 14, and the rotary drive machine 14 is suspended, for example, by a boom (not shown) of a crane device mounted on a construction work vehicle.

FIG. 1 shows the auger cutting edge 20 in a perspective view. The auger edge 20 is formed of a material having excellent wear resistance (chromium manganese steel or the like). The base end portion of the main shaft 11 is a connecting portion 2 to the auger body 10.
4, the connecting portion 24 can be easily connected to the auger body 10 with a single bolt (not shown). Further, a pilot bit 25 is provided at the tip of the spindle 11.
Is provided.

A screw-shaped blade 26 is integrally formed on the outer circumference of the main shaft 11. This blade 2
A blade frame 28 which is raised upward is continuously formed on the outer peripheral edge of the blade 6, and a plurality of pebbles 30 are provided at regular intervals on the upper surface of the blade 26. The blade frame 28 has a function of preventing the boulders on the upper surface of the blade 26 from escaping (falling down) in the outer peripheral direction of the blade 26. The blade 26 has a function of preventing it from sliding down along the blade 26 (toward the tip of the auger blade 20).

Now, three mouth blades 32 are fixed to the lower surface of the blade 26 near the base end of the auger blade 20. These blade tips 32 project from the blade 26 in the rotating direction of the blade 26 during excavation. Further, one excavating blade tip 34 is fixed to the tip (lower end) of the blade 26, and this excavating blade tip 34 also projects obliquely downward in the rotation direction of the blade 26.

Next, the excavation work of the ground with many boulders will be described. As shown in FIG. 2, the auger blade 20 having the above-described structure is connected to the tip of the auger body 10 while the auger body 10 is rotated by the rotary drive machine 14, and the pilot bit 25 of the auger blade 20 is grounded.
The auger blade tip 20 is fed into the ground by the rotation and its own weight. At this time, boulders such as boulders are excavated by the excavating cutting edge 34 fixed to the tip of the blade 26, the pilot bit 25 goes under between the stones, and the excavation of the ground by the blade 26 is performed. I can continue. Then, the boulders excavated by the excavating blade tip 34 are scooped by each of the mouth blade tips 32 and placed on the blade 26, and are sent to the blade 12 of the auger main body 10 together with soil and pebbles to be discharged to the outside.

[0011]

[Effects of the Invention] As described above, according to the present invention, when excavating the ground with many rocks, the rocks are excavated and placed on the blades.
Since it can be efficiently discharged together with other soil and pebbles, work efficiency is improved compared to the case where boulders were taken out manually.

[Brief description of drawings]

FIG. 1 is a perspective view of an auger edge.

FIG. 2 is an explanatory view showing an excavation work state of the ground.

[Explanation of symbols]

 10 auger body 20 auger blade edge 22 spindle 25 pilot bit 26 blade 28 blade frame 32 mouth edge 34 excavating edge

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Shou 60-144689 (JP, U) Shou 62-31505 (JP, Y2)

Claims (1)

(57) [Scope of utility model registration request] 1. A main shaft coupled to a tip of an auger body,
A screw-shaped blade fixed to the outer periphery of the main shaft and a blade that is continuous along the outer peripheral edge of the blade and
Blade frame formed by rising upward from the outer peripheral edge of the blade, a mouth edge fixed to the lower surface of the blade, and similarly from the tip of the blade in the rotating direction of the blade during excavation.
An auger cutting edge including an excavating cutting edge that is obliquely projected downward and a pilot bit provided at a tip of the main shaft.