JP4138514B2 - Material input method and input device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a material charging method and a charging device used when a material such as crushed stone is charged into an underground tunnel.
[0002]
[Prior art]
When building a high-rise building or the like on the ground in an area where old tunnels (small cross-section tunnels) for excavation, such as silica sand, are excavated vertically and horizontally, it is necessary to backfill the tunnels and crushed stones on the bottom of the tunnel After laying pavement material such as, the method of filling the tunnel with fluidizing material (soil + cement etc.) is adopted.
[0003]
In order to supply crushed stone into the shaft, it is necessary to construct a shaft, throw in the crushed stone, and transport the crushed stone into a number of tunnels extending in all directions from the bottom of the shaft using appropriate means. As for the method of throwing crushed stone in the shaft, if the fall height of the crushed stone is small, the method by dropping the crushed stone in the air, the method of hanging the lantern chute on the hopper and dropping the inside of the chute, or the bucket and wire with crushed stone by crane truck A method of hanging the mocco is common. In the method using wire mocco, a crushed stone spill prevention sheet is laid and the crushed stone is loaded.
[0004]
When the fall height of the crushed stone is medium to large, a method of hanging a bucket with a crane truck and loading the crushed stone on the bucket and dropping it is common. In this method, it is necessary to use the leader device used in the deep foundation method (see Patent Document 1) as an auxiliary method for raising and lowering the bucket in terms of safety improvement and efficiency.
[0005]
In addition, the applicant installs the input pipe from the upper material input section to the lower material output section in the shaft so that the lower end is located above the bottom surface of the material output section. The material is deposited in the lower part, the material is carried out from the material pile of the material carrying-out part, and the material is filled in the charging pipe to deposit the material below the charging pipe and in the lower part of the charging pipe. (See Patent Documents 2 and 3). A cone-shaped crushed stone pile with a stable angle of repose is formed on the bottom of the ground below the input pipe, and the crushed stone from this pile is appropriately transported using, for example, a mini backhoe. ), Transported into each tunnel, and crushed stones on the bottom of the tunnel.
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-88959 [Patent Document 2]
JP 2001-132398 A [Patent Document 3]
Japanese Patent Laid-Open No. 2001-132399
[Problems to be solved by the invention]
However, the conventional method for putting crushed stone in the shaft as described above has the following problems.
[0008]
(1) In the air fall of crushed stone, the greater the drop height of the material, the greater the scattering degree. As a result, the particle size balance becomes unstable, resulting in poor quality. Moreover, there is a problem in terms of safety due to the jumping of crushed stones.
[0009]
(2) The method of hanging the lantern chute on the hopper and lowering the crushed stone is possible when the height difference is small with a relatively small amount, but when the height difference is large, a high-speed fall occurs, so there is a problem of scattering. Yes, and there is a limit to the strength of the lantern chute, making it impossible for safety reasons.
[0010]
(3) With the bucket method, the amount of transport per hour is limited, which increases the cost. In addition, the stable consumption per hour at the bottom of the pit and the contact system on the supply side on the ground are often not fully operational, and stable work efficiency cannot be ensured.
[0011]
(4) In the case of wire mocco, there is a high risk of crushed stones falling down, and simultaneous work by human power in the downward direction is not safe. A bucket descent cannot be carried out simultaneously at the top and bottom.
[0012]
(5) Both methods using a crane vehicle require a guide for the lifting operation, which is costly, requires a long cycle time for transportation, and limits the amount of input per hour.
[0013]
(6) Both methods cause problems such as environmental pollution caused by scattering and large vibration noise during work.
[0014]
In addition, although the method using the input pipe of the present applicant can solve the above-mentioned problems, it takes time to work because the crushed stone of the pile is transferred to a forklift using a mini backhoe, for example. ineffective. Furthermore, the method using a forklift or the like as a transport vehicle cannot be applied to a narrow place.
[0015]
The present invention has been made to solve the above-mentioned problems, and its purpose is to allow the input material such as crushed stones to be safely input without being scattered and to enable simultaneous operation at the lower part of the vertical shaft. In addition, the input material can be arbitrarily input regardless of the amount of the input material carried out, and the input material with a good particle size balance can be stably supplied to the material carry-out section, and the input crushed stone can be carried out. It is an object of the present invention to provide a material charging method and a charging device that can perform work quickly and can be easily performed even in a narrow place.
[0016]
[Means for Solving the Problems]
Claim 1 of the present invention is a method for introducing a material (crushed stone, etc.) from the ground to the ground using a shaft, and the lower end of the material is discharged from the upper material input portion to the lower material discharge portion in the shaft. The chute-shaped material receiver is disposed at a downward slope below the charging pipe, and the discharge side of the material receiver is closed with a partition plate. The material charging method is characterized by depositing the material in the lower portion of the charging pipe and discharging the material by raising the partition plate. The material is discharged into a small transport vehicle such as a rear car. The material may be replenished by the amount consumed by the lower material carry-out section, or may be replenished when the stock height in the input pipe is lowered to a predetermined position.
[0017]
Claim 2 of the present invention is an apparatus for injecting material from the ground to the ground using a shaft, and the lower end of the shaft is located above the bottom surface of the material unloading portion from the upper material loading portion to the lower material unloading portion. A charging pipe installed so as to be inclined, a chute-shaped material receiver that is inclined downwardly below the charging pipe, a partition plate that divides the material receiver into a material accumulation portion and a chute portion, and the partition plate It is a material charging device provided with an operating mechanism for moving up and down. For example, the operating mechanism of the partition plate is fixed to the distal ends of a pair of left and right support members whose base ends are pivotally supported by the lower side surface of the input pipe and rotated in the vertical direction, and the partition plate is vertically moved by the operating lever. It is set as the structure which raises / lowers to a direction.
[0018]
In the configuration as described above, since the material descends in the input pipe, the material is prevented from being scattered, and the input material having a good particle size balance is supplied to the material carry-out section at the lower part of the shaft. The material carry-out portion is formed of a chute-shaped material receiver, and a conical pile having a stable angle of repose is formed in the material accumulation portion, and a stock having a predetermined height is formed in the lower portion of the input pipe. When the partition plate is lifted and crushed stone is discharged to a small transport vehicle such as a rear car and the partition plate is lowered and closed, the material quickly descends from the lower end of the input pipe as much as it is consumed, resulting in a substantially conical deposit. Mountains are formed again. The work efficiency is improved by this series of smooth material lowering and stock effect, and the material input in the input pipe can provide a high degree of freedom for material input on the ground.
[0019]
Also, in the method of transferring crushed stone deposited on the bottom of a conventional shaft to a forklift with a backhoe, it took time to work, but by discharging directly to a small transport vehicle using a chute-shaped material receiver, Work time can be greatly reduced. Moreover, by using a small transport vehicle such as a rear car, it is possible to easily perform crushed stone laying work even in a narrow place where a forklift cannot pass.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on the illustrated embodiment. This embodiment is an example applied to refilling an old tunnel that has been excavated in a large number of grids in a plan view at a depth near 50 m underground. FIG. 1 shows an overview of the entire input facility for the crushed stone material and the input method of the present invention. 2 and 3 show an example of an apparatus for carrying out the charging method of the present invention.
[0021]
As shown in FIG. 1, a shaft 1 having a diameter of about 5 m is constructed from the ground to a position where a large number of old shafts A are located, and the lower portion of the shaft 1 and the ends of a number of shafts A are connected by a horizontal shaft B. In such a shaft 1, a crushed stone input pipe 2 made of a steel pipe having a diameter of about 50 cm, a ready-mixed concrete supply pipe 3, a management scaffold 4 such as the input pipe 2 and the supply pipe 3, and a man elevator (Not shown) is provided.
[0022]
A hopper device 5 is installed on the ground, and the upper end of the input pipe 2 is connected to the input port at the lower part of the hopper device 5, and the lower end of the input pipe 2 is positioned about 2 m above the bottom surface 1 a of the shaft 1. Thus, the lower part of the injection tube 2 is supported by the support frame 6. The lower part of the input pipe 2 is fixed to the support frame 6 as will be described later. In addition, the input pipe 2, the supply pipe 3, the scaffold 4 and the like are arranged near the side wall in the cross section of the shaft 1, so that other equipment and materials for mine backfilling can be suspended by a crane or the like. ing.
[0023]
In the charging equipment using such a charging pipe 2, in the present invention, as shown in FIGS. 1 (c) and 1 (d), a chute-shaped material receiver 7 is inclined at a downward slope below the charging pipe 2. The crushed stone C is deposited in the material receiver 7 and in the lower portion of the input pipe 2 by closing the discharge side of the material receiver 7 with the partition plate 8 and is lifted to raise the crushed stone. C is discharged into the rear car 9 and is transported into the mine shafts A by the rear car 9 and crushed stone is laid on the bottom surface of the mine shaft. The rear car 9 can be transported even in a narrow place where a forklift cannot pass. Note that the present invention is not limited to the rear car, but may be other small transport vehicles.
[0024]
In the embodiment shown in FIGS. 2 and 3, the support gantry 6 is formed in an H shape in front view from a pair of left and right column members 6a, 6a made of H-shaped steel or the like and a beam member 6b. It fixes so that it may be located between pillar material 6a, 6a. A pair of left and right support plates 10, 10 project from the lower portion of the input tube 2, and the support plate 10 is fixed to the head of the column member 6a by welding or the like.
[0025]
The material receiver 7 is a bowl having a U-shaped cross section, and includes a material accumulation portion 7a and a chute portion 7b that protrudes integrally from the material accumulation portion 7a. The material depositing portion 7a has a rectangular planar shape and has an area sufficiently larger than the circular cross section of the charging tube 2 (see FIG. 3). The material accumulation portion 7a is disposed between the lower end of the input pipe 2 and the beam member 6b, and is fixed on the beam member 6b at a predetermined inclination angle. From the beam member 6b, a pair of fixing members 11, 11 projecting from the both sides of the material stacking portion 7a from both sides in the discharging direction made of an angle material or the like having different lengths. Is fixed to the side plate of the material accumulation portion 7a by welding or the like.
[0026]
The chute portion 7b is reinforced in the width direction by a reinforcing member 12 such as an angle member that connects the upper portions of the pair of left and right side plates, and the reinforcing member 13 such as an angle member that is attached to the outer surface of the side plate and protrudes upward. In addition, the length direction (discharge direction) is reinforced by the reinforcing member 13 and a reinforcing member 14 such as a reinforcing bar connecting the upper portions of the side plates.
[0027]
The partition plate 8 is disposed at a right angle to the material receiving bottom plate between the material accumulation portion 7a and the chute portion 7b so that the crushed stone C accumulated at the predetermined repose angle on the material accumulation portion 7a can be blocked as will be described later. In addition, the lateral cross section of the bowl-shaped material receiver 7 is closed, and is projected to protrude upward by a predetermined length. Moreover, it can be moved up and down in the vertical direction so that the accumulated crushed stone C can be discharged.
[0028]
The mechanism for raising and lowering the partition plate 8 includes, for example, a pair of left and right support members 15 and 15 and an operation lever 16 including an L-shaped pipe and the like. The support member 15 is pivotally supported in the vertical direction by pivotally supporting the base end thereof on the lower side surface of the charging tube 2, and the pair of distal ends are connected by a connecting member 17 such as an angle member. The upper part of the partition plate 8 is fixed to the input pipe side of the connecting member 17 by welding or the like, and the main body 16a of the operating lever 16 is attached to the discharge side of the connecting member 17 and fixed by welding or the like. By lifting and lowering the lever portion 16 b of the operating lever 16, the partition plate 8 is pivoted up and down in the vertical direction around the shaft fulcrum of the support member 15.
[0029]
In addition, the upper limit position of the partition plate 8 is regulated by a bar-like stopper 18 projecting from the lower front surface of the charging pipe 2 so that the crushed stone C is not discharged excessively. Further, the end of the main body 16a of the operating lever 16 and the support frame 6 are connected by an elastic member (not shown) such as rubber or a spring so that the closed state of the partition plate 8 is maintained by the urging force. Is preferred.
[0030]
In the above configuration, the crushed stone is charged in the following procedure.
[0031]
(1) On the ground, crushed stone is put into the hopper of the hopper device 5 by a backhoe or the like. As shown in FIG. 1, the input crushed stone C falls without scattering in the input pipe 2, accumulates on the material accumulation portion 7 a of the material receiver 7, and continues to input the crushed stone C. 2 to be deposited over a predetermined height H at the bottom. The crushed stone C maintains a stable substantially conical shape with a deposition angle of repose on the material receiver 7.
[0032]
(2) The partition plate 8 is gradually raised by the operating lever 16 and the position of the partition plate 8 is adjusted, and the crushed stone C is discharged from the substantially cone-shaped crushed stone pile on the material receiver 7 into the rear car 9. When the predetermined amount of discharge is completed, the partition plate 8 is closed. The rear car 9 is conveyed into each mine A and crushed stone C is laid on the bottom of the mine. The crushed stone C quickly descends and is replenished from the lower end surface of the charging pipe 2 by the amount discharged from the material receiver 7, and a stable, substantially conical crushed stone pile is formed. When the amount transported to the rear car 9 is charged and replenished from the ground, or when the stock in the lower part of the charging pipe 2 is reduced by a predetermined amount, the charging and charging is performed from the ground, and crushed stone C is always deposited in the lower part of the charging pipe 2. So that
[0033]
Such a series of smooth underground crushed stone fall and stock effect improve working efficiency. In addition, the crushed stone input work by backhoe etc. on the ground is supplemented while measuring the appropriate amount of crushed stone in the input pipe, and the amount of crushed stone in the input pipe and the amount of ground crushed and consumed crushed stone on the ground. A "clearance" on the input side that does not require much time chain at the time is born, and the utility of continuously transporting crushed stones safely can be obtained.
[0034]
In addition, the conventional method of transferring crushed stone deposited on the bottom of a shaft to a forklift with a backhoe takes about 5 minutes, but using a chute-shaped material receiver 7 reduces the work time to 10 minutes. It was possible to shorten it to about a second. In addition, by using the rear car 9, the crushed stone can be easily laid even in a narrow place where the forklift cannot pass.
[0035]
The crushed stone C transported into each mine A by the rear car 9 is spread on the bottom surface of the mine A with a thickness of about 15 to 30 cm. When the crushed stone has been laid, the soil and cement fluidizing material is filled on the crushed stone by an appropriate means, the tunnel is backfilled, and the ground strength is restored by solidifying the cement.
[0036]
In addition, although the above demonstrated the example which inserts and conveys a crushed stone in an old tunnel, it is not restricted to this, Applying this invention also when throwing a material from the upper part to the lower part and conveying it to a predetermined place. Can do.
[0037]
【The invention's effect】
Since this invention consists of the above structures, there can exist the following effects.
[0038]
(1) Since the material descends in the charging pipe, it is possible to prevent the material from scattering.
[0039]
(2) Since the material descends in the input pipe, less work space is required and safety is high.
[0040]
(3) Man elevator can be moved up and down, and material can be carried out at the bottom.
[0041]
(4) There is a noise prevention effect at the time of material fall and descent.
[0042]
(5) There is no scattering of material, and a small drop is caused by the stock in the input pipe, so that separation of the material is prevented and the required material quality with a good particle size balance can be ensured.
[0043]
(6) Work efficiency is greatly improved by smooth replenishment of materials to piles of piles and stock effect.
[0044]
(7) Since the material is always in stock in the input pipe, the difference between the material input amount in the ground part and the material carry-out consumption in the lower part may be adjusted roughly in time. The cost can be reduced because the material can be expensive and the material only needs to be input when necessary.
[0045]
(8) The work efficiency improves and the economic efficiency increases as the equipment is used for a long time or the work capacity is increased.
[0046]
(9) Working time can be greatly reduced by discharging directly to a small transport vehicle using a chute-shaped material receiver.
[0047]
(10) By using a small transport vehicle such as a rear car, it is possible to easily perform crushed stone laying work even in a narrow space where a forklift cannot pass.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an example of a charging facility for carrying out the charging method of the present invention, where (a) is a longitudinal sectional view of the whole, (b) is a front view of a ground charging unit, and (c) is a basement bottom. Front view, (d) is a side view of (c).
FIG. 2 is a side view showing an example of an apparatus for carrying out the charging method of the present invention.
FIG. 3 is a plan view of the apparatus of FIG.
[Explanation of symbols]
A ... Tunnel B ... Horizontal pit C ... Crushed stone H ... Height of input pipe stock amount 1 ... Vertical shaft, 1a ... Base 2 ... Crushed stone input pipe 3 ... Ready-container supply pipe 4 ... ... Management scaffold 5 ... Hopper device 6 ... Feed pipe support base 7 ... Material receiver 7a ... Material accumulation part 7b ... Chute part 8 ... Partition plate 9 ... Rear car 10 ... Support plate 11 ... Fixed Member 12 ... Reinforcement member 13 ... Reinforcement member 14 ... Reinforcement member 15 ... Support member 16 ... Actuation lever 17 ... Connecting member 18 ... Stopper

Claims (2)

This is a method of using a shaft to feed material from the ground to the basement. The pipe is installed in the shaft from the upper material input part to the lower material output part so that the lower end is located above the bottom surface of the material output part. At the same time, a chute-shaped material receiver is arranged at a downward slope below the charging pipe, and the material is deposited in the material receiver and in the lower part of the charging pipe by closing the discharge side of the material receiver with a partition plate. A material charging method, wherein the material is discharged by raising the partition plate. This is a device that feeds material from the ground to the ground using a shaft, and is installed in the shaft so that the lower end is located above the bottom surface of the material carry-out portion from the upper material feed portion to the lower material carry-out portion A chute-like material receiver that is inclined downwardly below the charging pipe, a partition plate that partitions the material receiver into a material accumulation portion and a chute portion, and an operating mechanism that raises and lowers the partition plate. A material charging device characterized by that.

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