JPH0542116Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to an auger equipped with stirring blades used in soil pile construction methods, etc., and particularly relates to an auger equipped with a removable stirring blade.

Prior Art In conventional augers equipped with stirring blades used in soil pile construction methods, the stirring blades are fixed to the auger rod by welding or the like, and cannot be removed. If the agitating blade is damaged, repair it by cutting the joint between the auger rod and agitating blade by fusing, removing the agitating blade from the auger rod, and fixing the undamaged agitating blade to the auger rod by welding, etc. was.

Problems that the invention aims to solve In conventional augers, the stirring blades are firmly fixed to the auger rod by welding, etc., and if the stirring blades are damaged, it takes time to repair, and the stirring blades are fixed. I had no choice but to replace the auger rod itself. The problem that this invention aims to solve is that the number of stirring blades can be increased or decreased in response to changes in soil conditions, or the type of stirring blades can be changed, without replacing the auger rod itself to which the stirring blades are fixed. To obtain an auger equipped with a removable stirring blade that can easily replace a stirring blade worn and damaged by obstacles, gravel, etc.

Means for Solving the Problems In the configuration of this invention, in an auger in which one or more stirring blades are attached to the auger rod,
The stirring blade is composed of two blade members, each blade member is integrally formed with a blade and a blade attachment part, and a fitting recess into which the auger rod is fitted is formed in the blade attachment part, and a fitting recess into which the auger rod is fitted is formed. Attachment holes are formed in parts slightly away from both ends of the recess, and the fitting recess of the blade attachment part of each blade member is fitted into the attachment part of the auger rod to which the stirring blade is to be attached, and the attachment hole of each blade attachment part is inserted into the attachment hole of each blade attachment part. Insert a removable fixing device into the auger rod, and use the fixing device to connect each wing member to each other at the attachment hole portion of the wing attachment portion, and to bring the surface of the fitting recess of the wing attachment portion into contact with the surface of the attachment portion of the auger rod. The removable auger has agitating blades that allow it to move and form a strong bond.

Bolts and nuts are usually used as the fixing devices, but when used in an environment where fusing can be easily performed, rivets or the like can also be used as the removable fixing device.

The cross-sectional shape of the fitting recess of the blade attachment part needs to match approximately half the cross-sectional shape of the auger rod attachment part to which the stirring blade is attached, and it is necessary to match the cross-sectional shape of the auger rod attachment part to which the stirring blade is attached. If the cross-sectional shape of the mounting portion of the auger rod is circular, approximately half of the circular shape (i.e., a semicircle with the same diameter) is the shape of the fitting recess; ), then approximately half of the non-circular shape may be made into the shape of the fitting recess. If the cross-sectional shape of the attachment part of the auger rod is circular, if a large force is applied to the stirring blade, there is a risk that the stirring blade will rotate relative to the auger rod, so stop this rotation as necessary. Provide means. The simplest method for this is, for example, welding the stirring blade to the auger rod (welding to the extent that it can be easily fused). If the cross-sectional shape of the attachment part is non-circular, there is no risk that the stirring blade will rotate relative to the auger rod, but the stirring blade will move in the longitudinal direction of the auger rod (i.e., in the vertical direction). There is a possibility. In this case, a means to stop this movement is provided as necessary. This means, for example, by providing a step on the auger rod to prevent the stirring blade from moving;
There is a way to weld the stirring blade to the auger rod to the extent that it can be easily fused.

In the embodiments described below, the joint portion where the blade attachment portion of one wing member and the blade attachment portion of the other wing member are joined to each other is a plane perpendicular to the longitudinal direction of the wing member. The blade attachment portion (i.e., fitting recess, attachment hole, etc.) may be configured so that the surface of the portion is parallel to the longitudinal direction of the blade member, or the surface of the joint portion may be configured to be a surface parallel to the longitudinal direction of the blade member. The blade attachment portion may be configured to have a surface that forms an acute angle with respect to the longitudinal direction.

Note that a number of types of blade members that make up the stirring blades are prepared with different stirring performance and strength, and the number of stirring blades can be increased or decreased in response to changes in soil conditions, or the type of stirring blades can be changed. If the stirring blades become worn out or damaged due to obstacles, gravel, etc., replace them.

Function Since the auger of this invention has removable stirring blades, it is easy to increase or decrease the number of stirring blades or change the type of stirring blades in response to changes in soil conditions. It can be carried out. When the stirring blades are worn out or damaged by obstacles, gravel, etc., only the worn or damaged stirring blades can be easily replaced.

Embodiment An embodiment of this invention will be explained using FIGS. 1 to 4.

In FIG. 1, numeral 1 is an auger rod of an auger attached to the tip of a rotating shaft of an excavator, and numeral 2 is a head cutter at the tip. Reference numeral 3 denotes a support member fixed near the tip of the auger rod 1, and an auger bit 4 is fixed to the tip of the support member 3 in a downward direction. Reference numeral 5 denotes a mounting portion for mounting the auger rod to the tip of the rotating shaft of the excavator, and is formed into, for example, a square prism.

One or more stirring blades 10 are attached to the portion of the auger rod between the support member 3 and the mounting portion 5.

The structure of the agitating blade 10 and how to attach it will be explained with reference to FIG.
The wing members 11 and 12 are
2 is integrally formed of a blade 13 and a blade mounting portion 14. The blade mounting portion 14 is for mounting the blade members 11, 12 to the auger rod 1. Since the cross-sectional shape of the mounting portion 6 for mounting the auger rod 1 to which the agitating blade 10 is attached is circular, the shape of the fitting recess 15 formed in the portion of the blade mounting portion 14 that comes into contact with the auger rod is made to coincide with approximately half the cross-sectional shape (circular) of the mounting portion 6 of the auger rod 1, and the blade members 11, 12 are provided on both ends of the fitting recess 15.
A protrusion 16 is formed extending in a direction perpendicular to the longitudinal direction of wing members 11 and 12, and two mounting holes 17 are formed in each of these protrusions 16. A joint portion 18 where the protrusions 16 of the wing mounting portion 14 of wing member 11 and the protrusions 16 of the wing mounting portion 14 of wing member 12 are joined to each other is made into a plane perpendicular to the longitudinal direction of wing members 11 and 12.

To make each wing member 11, 12, the wing 13 and the wing attachment part 14 can be made together, or the wing attachment part 14 having the fitting recess 15 and the protruding part 16 can be made by bending the plate material. After forming, this wing attachment part 14
It can also be made by fixing it to the wing 13 by welding or the like.

To attach the two blade members 11 and 12 to the auger rod 1, the stirring blade 10 of the auger rod 1 is
Each wing member 11,
12 fitting recesses 15 are fitted into each wing member 11, 1.
Insert the bolt 20 into the mounting hole 17 of the protrusion 16 of the wing attachment part 14 of No. 2, screw the nut 21 onto the bolt 20, and attach each wing member 11, 12 to the attachment hole 17 of the protrusion 16 of the wing attachment part 14. 17 are firmly connected to each other at certain portions, and the surface of the fitting recess 15 of the blade attachment portion 14 is brought into contact with the surface of the attachment portion 6 of the auger rod 1 and firmly crimped.

Note that the protruding portion 16 in the embodiment is similar to the wing members 11, 1
Since it extends and protrudes in a direction perpendicular to the longitudinal direction of the auger rod 1, it has the effect of promoting the agitation of the earth and sand around the auger rod 1.

When fixing with the bolts 20 and nuts 21, it is preferable to employ means to prevent the nuts 21 from loosening, and when fixing with the bolts 20 and nuts 21 alone, there is a risk that the stirring blade 10 may rotate relative to the auger rod 1. For example, the wing members 11 and 12
If a part of the rod is welded 30 to the surface of the auger rod, there is no risk of rotation.

When the soil conditions worsen, the support member 3 and the mounting part 5
The number of stirring blades 10 attached to the portion of the auger rod between the two can be increased or decreased. In this case, bolt 20
and the nut 21 to remove the blade members 11 and 12 that make up the stirring blade 10, loosen the nut 21 and shift the mounting position of the stirring blade 10, or remove the bolt 20.
In response to changes in soil conditions, the blades may be passed through the mounting holes 17 of new wing members 11, 12 and fixed with nuts 21. The same applies when changing the type of stirring blade or when the stirring blade is worn out and damaged by obstacles, gravel, etc.

Effects of the invention The invention of this application allows the stirring blades to be removably fixed to the auger rod, so it is possible to increase or decrease the number of stirring blades or change the type of stirring blades in response to changes in soil conditions. It is possible to excavate using an auger rod equipped with stirring blades that match the soil conditions. Furthermore, it is easy to operate in response to changes in soil conditions. In addition, even if the stirring blades become worn or damaged due to obstacles, gravel, etc., only the worn or damaged stirring blades can be easily repaired or replaced, which helps reduce costs and is extremely economical. be.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the invention of this application, in which FIG. 1 is an overall front view, FIG. 2 is an enlarged front view of a part of FIG. 1, and FIG. 3 is an enlarged front view of a part of FIG. is a plan view taken along line A-A in Figure 2 and viewed in the direction of the arrow;
FIG. 4 is an enlarged front view of another part of FIG. 1. In the figure, 1 is the auger rod, 2 is the head cutter, 3 is the support member, 4 is the auger bit, 5 is the attachment part, 6 is the attachment part of the stirring blade of the auger rod, 1
0 is a stirring blade, 11 and 12 are blade members, 13 is a blade, 14 is a blade attachment part, 15 is a fitting recess, 16 is a protrusion, 17 is a mounting hole, 18 is a joint part, 20 is a bolt, 21 is a nut It is.

Claims (1)

[Scope of utility model registration request] In an auger in which one or more stirring blades are attached to the auger rod, the stirring blade is composed of two blade members, each blade member having a blade and a blade attachment part, and the blade attachment part is attached to the auger rod. It is equipped with a fitting recess that fits into the mounting part and a mounting hole formed at a portion slightly away from both ends of the fitting recess, and the fitting recess of the wing mounting part of each wing member is fitted into the auger rod, and each wing A removable fixture is inserted into the mounting hole of the mounting part, and the fixture connects each wing member to each other at the mounting hole of the wing mounting part, so that the surface of the fitting recess of the wing mounting part is connected to the mounting part of the auger rod. an auger having a removable stirring blade, the auger being coupled in contact with the surface of the auger.