JP2935260B2 - Ground improvement machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil improvement machine for improving the soil by stirring and mixing soil by rotating a chain having stirring blades.

[0002]

2. Description of the Related Art Conventionally, a ground improvement machine of this type has a support frame.
A pair of left and right sprockets at the top and bottom of the bodyArrangement
Endless chain between the upper and lower sprockets
In each of the chains, stirring blades are arranged in line,
Rotate each chain with the rotation of the sprocket to secure
Stir and mix soil while supplying powder or milk
Like that.

[0003] If there is an obstacle in the ground, such as a boulder being stirred, this bites between the chain and the sprocket and prevents the chain from falling off the sprocket. the position, absorber with absorber or coil spring with hydraulic cylinders Ru is mounted to adjust the tension of the chain.

[0004]

However, when the hydraulic cylinder is used underground, the rod is not only scratched and easily rusted, but also mud enters the cylinder and cannot perform its intended function. Due to the hydraulic pressure, the response of the feedback operation is slow, and there is a problem that the momentum chain comes off when a stone bites into the sprocket. Also, when the coil spring is underground, muddy soil enters the coil spring and it is difficult to expand and contract, and the function of a normal absorber is hindered.
There was a problem that the chain would come off.

[0005] The present invention has been made to solve the above problems, to provide a ground improvement machine stone also chew the sprocket can normally rotated without ho Tondo chain disengages It is the purpose.

[0006]

In order to achieve the above object, a ground improvement machine according to the present invention comprises a pair of left and right sprockets disposed on upper and lower portions of a support frame, and an endless chain between the upper and lower sprockets. the bridged, the respective chain and arrayed a plurality of stirring blades, the ground improvement machines as stirring and mixing the soil by rotating the chain, Ji E in to the support frame tension The shock absorber has a structure in which a leaf spring is mounted, and a holding shaft on which a pressing sprocket that meshes with a chain is mounted on the front surface of the leaf spring is integrally fixed.

[0007]

[Function] Even if there is an obstacle such as a boulder in the ground and the obstacle bites between the sprocket and the chain during the stirring of the ground, and the chain is tensed and is likely to come off from the sprocket, the pressing sprocket is turned into the chain. As a result, the leaf spring contracts and is pushed backward, so that there is some room for the chain, and the chain does not come off the sprocket.
In addition, the stirring operation can be performed efficiently.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a ground improvement machine according to the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a ground improvement machine according to the present invention, and FIG. 2 is a side view thereof. In the figure,
1 is a support frame. The support frame 1 is a combination of a horizontal plate 2 and left and right vertical plates 3 and 3, and is mounted on the upper surface of the horizontal plate 2 at the tip of an operating arm of a movable actuator such as a backhoe (not shown). The mounting plates 4, 4 are erected, and two support plates 5, 5 for fixing the upper end to the horizontal plate 2 hang down inside the left and right vertical plates 3, 3.

[0009] between the vertical plates 3,3, the horizontal axis 6 extending through the support plates 5 and 5 on top are laterally placed, the hydraulic motor 7 for rotating the transverse shaft 6 is mounted on one end You. In addition, a horizontal shaft 8 is horizontally mounted below the support plates 5 and 5.

A pair of left and right sprockets 9, 9 are fixed to the upper and lower horizontal shafts 6, 8 respectively inside the support plates 5, 5, and an endless chain is provided between the upper and lower sprockets 9, 9. 10, 10 are erected. Both chains 1
., A plurality of stirring blades 11, 11... And a plurality of stirring blades 12, 12,.
Is fixedly arranged. Each set of these stirring blades 1 in the lateral direction
1 and 12 have the same width.

As shown in FIGS. 4 and 5, each of the stirring blades 11 and 12 has a flat T-shaped wing portion 14 integrally fixed to the front surface of a horizontally long fixed plate 13 fixed to the front surface of the chain 10. Be composed. As shown in FIG. 6, each fixed plate 13 has a left stirring blade 11a at the uppermost stage having a width three times that of the right stirring blade 12a.
The three and one wings 14 are fixed at the same interval as the width of the wings 14.

[0012] The second stage left stirring blade 11b and the right of the stirring blade 12b have the same width, the wing portion 14 of each two, respectively, are fixed at regular intervals. Furthermore, the left stirring blade 11c of the third stage has a width that is one third of that of the right stirring blade 12c,
One and three wing portions 14 are fixed at equal intervals. Hereinafter, the same configuration is repeated. Thus, the agitating efficiency is improved by arranging each set of the stirring blades 11 and 12 in the lateral direction in a meandering manner.

Furthermore, the wing portion 14 of the fixed plate 13, since it is arranged apart the same width as the wing portion 14, of the following between the left and right wings 14, 14 in the direction along the both chains 10, 10 The step wings 14 are located so that the soil can be sufficiently separated and assembled when stirring and mixing the soil to improve the stirring performance.

Reference numeral A denotes a control box that fits between the support plates 5 and 5 and between the sprockets 9 and 9, and has both sides fixed to the support plates 5 and 5. If the soil does not enter the chains 10 and 10 and is not discharged as it is, the control box A is applied as a load as it is when the ground improvement machine is lifted from the soil, which hinders the operation thereof. To do that.

Reference numerals 15 and 15 denote shock absorbers arranged on the left and right sides inside the support plates 5 and 5 for adjusting the tension of the chain. Each of the shock absorbers 15, 15, as shown in FIG.
A plurality of leaf springs 17 are mounted on the front surface of a substrate 16 attached to the inner surface of the plate 5, a holding shaft 18 protruding forward is fixed to the front surface of the leaf spring 17, and the chain 1
Pressing sprocket 19 adding Tension is pivotally attached rotatably by a shaft 20 to 0,10.

The pressing sprocket 19 is always urged forward by the leaf spring 17. For example, when a stone is interposed between the sprocket 9 and the chain 10 and the chain 10 is apt to come off, the plate is released. The spring 17 is contracted, and the pressing sprocket 19 is pushed rearward to adjust the tension of the chain.

The soil improving machine of the present invention comprises the above construction, in the field of improving the ground, when driving the hydraulic motor 7, the upper sprockets 9, 9 with the horizontal axis 6 is not accompanied to rotate Chen 10, 10 and rotation, is moved upward from successively lower each stirring blade 11, 12. Then, while the powder or milk of the solidifying material is being supplied, the soil improvement machine is repeatedly raised and lowered while stirring and mixing while excavating the soil.

[0018] Therefore, Cheng 1 stone S chews between the chain 10 and the sprocket 9 as shown in FIG. 3, for example during agitation
Even when the chain 10 is disengaged from the sprocket 9 due to the tension of 0, the leaf spring 17 contracts and the pressing sprocket 19 is pushed backward, so that the chain 10 has some allowance.

[0019] Therefore, Chen 10 that there is no such deviate from the sprocket 9. Further, since the plate spring 17 is only repeated swelling or contraction together, even in the mud motion is deteriorated caught pebble, have name be as detrimental to the operation .

[0020]

As described above, in the ground improvement machine of the present invention, since the pressing sprocket for adjusting the tension of the chain is urged by the leaf spring, the pebbles are caught even in the mud. not things like interfere with its operation, that always give to function normally. Therefore, there is almost no accident that the chain falls off the sprocket, which is useful for improving workability.

[Brief description of the drawings]

FIG. 1 is a front view of a soil improvement machine of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is an enlarged sectional view of the same.

FIG. 4 is an enlarged plan view of a stirring blade.

FIG. 5 is a side view of the same.

FIG. 6 is a layout diagram of only stirring blades.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support frame 9,9 Sprocket 10,10 Chain 11,12 Stirring blade 15 Shock absorber 17 Leaf spring 18 Holding shaft 19 Pressing sprocket

Claims (1)

(57) [Claims] 1. A pair of left and right sprockets are respectively arranged at upper and lower portions of a support frame body, and an endless chain is erected between the upper and lower sprockets. in soil improvement machine that is to be mixed and agitated soil by rotating the chain, it will be equipped with a shock absorber for adjusting the tension of the switch E in to the support frame, the shock absorber, the leaf spring A ground improvement machine comprising: a holding shaft on which a pressing sprocket meshing with a chain is fixedly attached to a front surface of the leaf spring.