JP3718132B2 - Ground improvement construction machine and material supply method to ground improvement construction machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ground improvement construction machine and a material supply method to the ground improvement construction machine that prevent scattering to the atmosphere accompanying movement of material at a high place.
[0002]
[Prior art]
As shown in FIG. 5, conventionally, a ground improvement machine, for example, a sand pile construction machine 55, has a material transport system for supplying materials such as crushed stone and sand to a hopper 53 provided in a casing pipe 54 for sand pile formation. . The transport system includes a moving bucket 50 that moves up and down from the ground surface along the leader 52 to transport materials such as sand. The moving bucket 50 has a discharge port 51 for discharging material such as sand that has been transported. The discharge port 51 is opened when the moving bucket 50 is tilted forward by the operation of a hydraulic cylinder or the like, and is dropped by gravity. The material is supplied to the hopper 53. In such a high place, the material is frequently put into the hopper 53 from the discharge port 51 of the moving bucket.
[0003]
When a material is thrown into the hopper 53 at a high place, a cross wind may hit the material falling in the air and the material may be scattered or the material may fall from the gap between the moving buckets 50 itself, causing damage to the neighborhood. Furthermore, when the material contains fine powder such as lime, there is a problem that damage is further increased.
[0004]
[Problems to be solved by the invention]
Therefore, the objective of this invention is providing the material supply method to the ground improvement construction machine and the ground improvement construction machine which prevent the scattering to the atmosphere accompanying the material injection to the hopper from the moving bucket in a high place.
[0005]
[Means for Solving the Problems]
In such a situation, the present inventors have conducted intensive studies to achieve the above object, and as a result, the discharge port of the moving bucket that has reached a predetermined position in a high place and the receiving port of the hopper of the ground improvement construction machine are sealed. When the material is charged and the air in the hopper is forcibly exhausted, it is found that the material can be prevented from being scattered from the moving bucket at the high place to the hopper. The invention has been completed.
[0006]
That is, the present invention (1) conveys a leader supported by a base machine on the ground and a material that can be raised and lowered by the leader and that is pivotally supported by a side end portion of the movable bucket support plate and that can rotate in the horizontal direction. In a ground improvement construction machine equipped with a moving bucket and a hopper into which material is thrown from the moving bucket, and a casing pipe that can be moved up and down by the leader and penetrated or pulled into the ground, the material is transported from the ground surface. After moving the moving bucket along the leader and reaching a predetermined position, the moving bucket is rotated horizontally and moved onto the hopper, and the hopper is raised or the moving bucket is lowered. Te first step of connecting in a sealed state and socket of the hopper outlet and ground improvement construction machine of the mobile buckets, forced exhausting air within said hopper One, the material in the moving bucket is to provide a material supplying method for ground improvement construction machine characterized by having a second step, to be introduced into the hopper. According to this method, since the discharge port of the moving bucket and the receiving port of the hopper are coupled without a gap, it is possible to prevent scattering due to material charging. Furthermore, since the forced evacuation for releasing the pressure is performed in the hopper, it is possible to prevent dust from being ejected from a slight gap in the hopper and to smoothly put the material into the hopper.
[0007]
Moreover, this invention (2) processes the forced exhaust discharged | emitted from a hopper at the said 2nd process with the dust collector installed on the ground, The material supply to the ground improvement construction machine as described in said (1) characterized by the above-mentioned. A method is provided. According to this method, the material can be prevented from being scattered at a high place, and the fine powder material present in the forced exhaust can be processed by the ground dust collector, so that further cleaning can be achieved.
[0008]
The present invention (3) also includes a leader that is supported by the ground base machine, and a material that can be moved up and down by the leader and that is supported by the side end of the movable bucket support plate and that can rotate in the horizontal direction. A bucket, and a hopper into which material is charged from the moving bucket, and a casing pipe that can be moved up and down by the leader and penetrated into or pulled out from the ground, and a discharge port of the moving bucket and a receiving port of the hopper Is connected to a sealed state at the time of connection, and an exhaust pipe for forcibly exhausting air in the hopper is connected to the hopper . According to this construction machine, the material supply method to the ground improvement construction machine can be carried out.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the material supply method to the ground improvement construction machine in embodiment of this invention is demonstrated based on FIGS. 1 to 4 are perspective views showing a part of a ground improvement construction machine that implements a material supply method to a ground improvement construction machine according to an embodiment of the present invention, and FIGS. 1 and 2 show the first step. FIG. 3 is a diagram for explaining the second step, and FIG. 4 is a diagram for explaining the step after the second step. The ground improvement construction machine 10 includes a leader 2 supported by a base machine on the ground, a moving bucket 1 that can be moved up and down by the leader 2 and carries materials such as sand, crushed stone, and lime from the ground surface, and a ground that can be moved up and down by the leader 2. The casing pipe 4 is inserted into or pulled out from the inside. A hopper 3 into which material is introduced from the moving bucket 1 is installed above the casing pipe 4. The movable bucket 1 can be moved up and down by the leader 2 together with the movable bucket support plate 12 and is supported by the side end of the movable bucket support plate 12 so as to be rotatable in the horizontal direction.
[0010]
The hopper 3 includes a box-shaped hopper main body 34 a having a hopper receiving port 31, and a duct portion 34 b for connecting the hopper 3 and the casing pipe 4. In this example, the hopper receiving port 31 is in the shape of a tray having a round hole opening, and is fitted to the discharge port 11 of the moving bucket so that the moving bucket 1 and the hopper 3 communicate with each other in a sealed state. An exhaust pipe 9 that forcibly exhausts air in the hopper is connected to the upper surface of the hopper 3, and a monitor 33 that can confirm the position of the moving bucket 1 is installed.
[0011]
The other end of the exhaust pipe 9 is connected to the suction device 5, and further passes through the suction pinch valve 8b and the silencer 6a or 6b and leads to the dust collector 7 installed on the ground. A quick exhaust pipe 81 is installed on the outer peripheral surface of the casing pipe 4 for the purpose of quick exhaust of air in the casing pipe, and the other end of the quick exhaust pipe 81 passes through the quick exhaust pinch valve 8a and the silencer 6a or 6b. , Leading to a dust collector 7 installed on the ground.
[0012]
The coupling form of the discharge port 11 of the moving bucket and the receiving port 31 of the hopper is not limited to the above example as long as the movable bucket 1 and the hopper 3 can communicate with each other and a sealed state can be achieved. Both the discharge port 11 of the moving bucket and the receiving port 31 of the hopper may have a flange-shaped contact surface, which may contact each other closely. The hopper receiving port 31 may be a member that can move up and down within a predetermined range with respect to the upper surface 32 of the hopper, and the hopper receiving port 31 may be raised or lowered by operation of a hydraulic cylinder. Further, the hopper mounting port of the exhaust pipe 9 for forcibly exhausting the air in the hopper is not limited in the above example, and may be, for example, a side surface of the hopper body 34a.
[0013]
Next, the material supply method to the ground improvement construction machine of this invention is demonstrated. This material supply method has a first step and a second step. In the first step, as shown in FIGS. 1 and 2, the moving bucket 1 for transporting the material from the ground surface is raised along the leader 2, After reaching a predetermined position, the discharge port 11 of the moving bucket 1 and the receiving port 31 of the hopper 3 of the ground improvement construction machine 10 are connected in a sealed state. The predetermined position is a position where the discharge port 11 of the moving bucket 1 is slightly above the receiving port 31 of the hopper 3, and the position is confirmed by a monitor 33 installed in the hopper body 34 a as necessary. be able to. After reaching a predetermined position, the moving bucket 1 rotates in the horizontal direction around one end of the moving bucket support plate 12 and moves onto the hopper 3. Thereafter, the hopper 3 is raised and connected so that the discharge port 11 of the moving bucket 1 and the receiving port 31 of the hopper 3 are in a sealed state. In addition to the above, the discharge port 11 of the moving bucket 1 and the receiving port 31 of the hopper 3 can be coupled by fixing the hopper 3 and lowering the moving bucket 1 along the leader 2. Further, the horizontal rotation of the moving bucket 1 is performed by a hydraulic cylinder not shown in the figure.
[0014]
After the first step, the second step is performed. The second step is a step of charging the material in the moving bucket 1 into the hopper 3 while forcibly exhausting the air in the hopper 3 (FIG. 3). The material in the moving bucket 1 can be put into the hopper 3 by gravity drop by opening a blocking plate that closes the discharge port 11 of the moving bucket 1 (not shown in the figure). Since the inside of the pipe through which the material passes through the moving bucket 1 and the hopper 3 is in a sealed state, the material is not scattered into the atmosphere. The air in the hopper 3 is sucked out of the system by opening the suction pinch valve 8b and turning on the suction machine 5. Thereby, it is possible to prevent the pressure increase due to the charging of the material and smooth the flow of the material, and to prevent the dust from being ejected from a slight gap in the hopper 3. The sucked exhaust passes through the silencer 6a or 6b, and then passes through the dust collector 7, where the material mixed therein is removed, and only clean exhaust is released to the atmosphere. On the other hand, simultaneously with opening the suction pinch valve 8b, the sudden exhaust pinch valve 8a is also opened at the same time, and the air in the casing pipe 4 is rapidly exhausted. Thereby, the pressure in the casing pipe 4 that has been under pressure rapidly decreases, and the material charged into the hopper 3 flows smoothly. The rapidly exhausted exhaust gas passes through the silencer 6a or 6b and then passes through the dust collector 7, where the material mixed therein is removed, and only clean exhaust is released to the atmosphere.
[0015]
After the end of the second step, the blocking plate in the moving bucket 1 is closed and the moving bucket 1 is moved upward or the hopper 3 is moved downward to release the coupling between them, and then the moving bucket 1 Is rotated in the horizontal direction to be placed in the original position of the reader 2 and then lowered along the reader 2 (FIG. 4).
[0016]
Although omitted in the figure, the moving bucket 1 descending to the ground is replenished with a moving excavator loaded with a new material. At this time, it is preferable that the material is supplied from the bucket of the mobile shovel to the mobile bucket so that the material is prevented from being scattered. For example, a material for preventing scattering of material may be installed on the moving bucket side, or the contact surface of the moving shovel bucket and the moving bucket may have the same shape, and the corresponding contact surfaces may be in close contact with each other. . Further, the relationship between the outlet of the material tank that supplies the material to the bucket of the mobile shovel and the bucket of the mobile shovel is also preferably provided with measures for preventing the material from scattering, for example, the material scattered in the bucket of the mobile shovel. It may be provided with a prevention cover, or the contact surface of the supply port of the material tank and the receiving port of the bucket of the movable shovel may have the same shape so that the corresponding contact surface is in close contact.
[0017]
The moving bucket 1 to which the material is supplied on the ground rises to a predetermined position along the leader 2 and is again in the state shown in FIG. 1, and then the above-described operation is repeated.
[0018]
【The invention's effect】
According to the present invention, since the discharge port of the moving bucket and the receiving port of the hopper are coupled without a gap, it is possible to prevent scattering due to material charging. Furthermore, since the forced evacuation for releasing the pressure is performed in the hopper, it is possible to prevent dust from being ejected from a slight gap in the hopper and to smoothly put the material into the hopper. Further, according to the present invention, it is possible to prevent the material from being scattered at a high place and to process the fine powder material present in the forced exhaust with the dust collector on the ground.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a part of a ground improvement construction machine that implements a material supply method to a ground improvement construction machine of this example, and is a view for explaining a first step.
FIG. 2 is a diagram for explaining the latter stage of the first step following FIG.
FIG. 3 is a diagram illustrating a second step.
FIG. 4 is a diagram illustrating a process after a second process.
FIG. 5 is a partial side view illustrating a conventional material supply method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,51 Moving bucket 2,52 Leader 3,53 Hopper 4,54 Casing pipe 5 Suction machine 6a, 6b Silencer 7 Dust collector 8a Quick discharge pinch valve 8b Suction pinch valve 9 Exhaust pipe 10, 55 Ground improvement construction machine 11 of moving bucket Discharge port 12 Moving bucket support plate 31 Receiving port of hopper 32 Upper surface of hopper 33 Monitor 34a Hopper body portion 34b Duct portion 81 Quick exhaust pipe

Claims (3)

A leader supported by a base machine on the ground, a moving bucket that can be moved up and down by the leader and that is supported by a side end portion of the moving bucket support plate and carries a material that is rotatable in a horizontal direction, and a material from the moving bucket In the ground improvement construction machine provided with a casing pipe that is disposed above and a casing pipe that can be moved up and down by the leader and penetrated or pulled out into the ground,
A moving bucket carrying material from the ground surface is raised along the leader and after reaching a predetermined position, the moving bucket is rotated horizontally to move onto the hopper and raise the hopper, or A first step of lowering the moving bucket and connecting the discharge port of the moving bucket and the receiving port of the hopper of the ground improvement construction machine in a sealed state, while forcibly exhausting the air in the hopper, the material in the moving bucket A material supply method to a ground improvement construction machine, comprising a second step of charging the hopper into the hopper.   The material supply method to the ground improvement construction machine according to claim 1, wherein the forced exhaust discharged from the hopper in the second step is processed by a dust collector installed on the ground.   A leader supported by a base machine on the ground; a moving bucket that can be moved up and down by the leader and that is supported by a side end of the moving bucket support plate; And a casing pipe that can be moved up and down by the leader and penetrated into or pulled out from the ground. A ground improvement construction machine connected to and connected to the exhaust pipe for forcibly exhausting air in the hopper.

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