JPH0545626Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a stabilizer that stirs and stabilizes the ground.

[Conventional technology and its problems]

Spreading lime or cement on soft ground,
It has been common practice to dig up the ground and stir it to make it hard.

Stabilizers are used to improve soil quality as described above. Conventional techniques for such stabilizers include those shown in FIGS. 4 and 5. This stabilizer is attached to the shot arm 2 of the hydraulic excavator 1.
Of the pair of connecting pieces 4 and 5 provided at the rear end of the bracket 3, one connecting piece 4 is swingably attached to the tip of the bracket 3 with a pin 6, and the other connecting piece 5 is connected to the tip of the shot arm 2. are connected by a bi-articulated link 7, and one end of a hydraulic cylinder 9 is connected to the bent portion 8 of the bi-articulated link 7, and the other end of a hydraulic cylinder 9 is connected to the rear end of the shot arm 2.

Further, a torque transmission case 10 is provided at the tip of the bracket 3, and a pair of drums rotated by a hydraulic motor (not shown) supported by the bracket 3 are mounted on both sides of the tip of the torque transmission case 10. 11, and a large number of stirring bits 12 are provided around the outer periphery of each drum 11.

By the way, the above-mentioned stabilizer rotates a pair of drums 11 in one direction and moves the drums 11 along the ground to stir the ground, but during stirring, the stirring bits 12 bite deeply into the ground. Then, as shown in FIG. 5, the outer periphery of the tip of the torque transmission case 10 hits the ground, so the depth of stirring is limited to the height of the blade of the stirring bit 12, and there is an inconvenience that stirring cannot be done to a deep position. be.

In addition, since only the surface layer of the ground is stirred, dust from lime and cement spread on the ground surface is thrown up, making the working environment extremely poor.

Therefore, the object of this invention is to provide a stabilizer that eliminates the above-mentioned disadvantages and allows stirring to a deep position.

[Means for solving problems]

In order to achieve the above object, this invention has a configuration in which a ripper with tapered surfaces on both sides and a narrower front side is provided on the leading side of the torque transmission case provided at the tip of the bracket in the moving direction during stirring work. That's what I did.

[Effect]

With the above configuration, during stirring work in which a drum rotated in one direction is moved along the ground,
The ripper moves by dividing the soil in front of the torque transmission case on both sides, and the torque transmission case moves behind it. Therefore, the outer periphery of the tip of the torque transmission case does not touch the surface of the ground, and as a result, it is possible to stir to an extremely deep position.

〔Example〕

Embodiments of this invention will be described below with reference to FIGS. 1 to 3.

Note that the same parts as in the conventional example shown in FIGS. 4 and 5 described above are designated by the same reference numerals, and the explanation thereof will be omitted.

As shown in the figure, a support plate 13 is attached to the front part of the bracket 3 supported at the tip of the shot arm 2 in the direction of movement during stirring operation, and three pieces are attached to both ends and the center of the support plate 13. Ritzper 1
The upper parts of 4 and 15 are connected.

The rippers 14 on both sides have a plate shape and are arranged on the front side of each of the pair of drums 11, while the ripper 15 on the center part is arranged on the front side of the torque transmission case 10. The ripper 15 in the center has tapered surfaces 16 on both sides and a narrow width on the front side, and the width dimension on the rear side is the same as that of the torque transmission case 1.
It approximates the width dimension of 0.

Further, the lower end of each ripper 14, 15 is approximately the cutting edge of a stirring bit 12 located at the lower part of the outer periphery of the drum 11 when the ripper 14, 15 is held vertically.

As described above, by arranging the ripper 15 on the front side of the torque transmission case 10, during the stirring work in which the drum 11 rotated in one direction is moved along the ground, the ripper 15 removes the soil on both sides in the front part in the moving direction. A groove is formed to move the
The tip of the torque transmission case 10 moves along the groove. Therefore, during the ground stirring work, the lower surface of the tip of the torque transmission case 10 does not come into contact with the ground, and as a result, it is possible to stir the ground to a deep position.

Furthermore, by stirring from a deep position, it is possible to prevent dust from flying up in the surrounding area.

Incidentally, by attaching a cutting bit 17 to the tips of the rippers 14 and 15, the rippers 14 and 15 can better bite into the ground.

In the embodiment, the ripper 14 is also provided on the front side of the drum 11, but the ripper 14 can also be omitted.

〔effect〕

As described above, this invention has a ripper with tapered surfaces on both sides attached to the leading side of the torque transmission case, so the ripper can be used during stirring work in which a drum rotated in one direction is moved along the ground. Therefore, the soil on the front side of the torque transmission case can be pushed away to both sides. Therefore, it is possible to stir to a very deep position, and by increasing the stirring depth, it is possible to prevent dust from flying up in the surrounding area.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the stabilizer according to this invention, Fig. 2 is a cross-sectional plan view of the same ripper, Fig. 3 is a side view showing the same stirring operation state, and Fig. 4 is a conventional one. FIG. 5 is a front view showing the stabilizer of the above, and FIG. 5 is a side view of the same. 1... Hydraulic shovel, 2... Shot arm,
3... Bracket, 10... Torque transmission case,
11...Drum, 12...Stirring bit, 15...
Ritzpur.

Claims (1)

[Scope of utility model registration request] A bracket is attached to the tip of the shot arm of the hydraulic excavator, and a pair of drums with stirring bits on the outer periphery are installed on both sides of the torque transmission case provided at the tip of the bracket. The stabilizer is configured to move along the ground to stir the ground, characterized in that a ripper with tapered surfaces on both sides and a narrower front side is provided on the leading side of the torque transmission case in the movement direction during stirring work.