JP2007113340A - Shaft excavation equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide shaft excavation equipment which enables efficient feeding of concrete and placement of the concrete in a manner eliminating a waiting time. <P>SOLUTION: The shaft excavation equipment is provided with a muck bucket for taking out excavation muck to the outside of a shaft, and a concrete bucket 10 for taking in concrete C from the outside of the shaft, so that the buckets are vertically movable in the shaft T. Then each floor of a scaffold 1 has a through hole 1a to allow the muck bucket to vertically pass therethrough, and a concrete hopper 9 detachably attached to the through hole 1a. Thus during excavation, the muck bucket passes through the through hole 1a of the scaffold 1 to take out the excavation muck to the outside of the shaft. On the other hand during concrete placement, the concrete hopper 9 is attached to the through hole 1a of the scaffold 1, and thereafter the concrete C taken into the shaft by the concrete bucket 10 is transported to be placed on a side wall of the shaft T. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a shaft excavation facility, and more particularly to a technique that enables concrete to be efficiently supplied and placed.

  2. Description of the Related Art Conventionally, there is a shaft excavation facility in which a scaffold equipped with an excavator is suspended in a shaft to excavate the ground, and excavation sludge is carried out of the shaft to place concrete on the side wall of the shaft after excavation. The excavation sludge is carried out by a sludge bucket that is lifted and lowered by hanging the inside of the shaft with a wire rope, and the concrete is carried by a moving concrete hopper that is hung by the wire rope and moved up and down.

  By the way, it is necessary to adjust the amount of concrete that can be used at one time in advance. If there is a shortage of concrete during placement, the placement will be interrupted, the concrete hopper must be carried out of the mine, the concrete must be replenished and reintroduced into the mine, and the concrete hopper can be placed in and out. There was a problem that time was lost due to waiting.

In addition, since the concrete hopper is placed on a scaffold that is separate from the passage hole and is placed, there is a problem that when the small-diameter shaft is constructed, the space occupied by the concrete hopper cannot be secured on the scaffold. It was.
JP 2003-106084 A

  The problem to be solved by the present invention is to provide a shaft excavation facility that solves these conventional problems and that can efficiently supply concrete and can be placed without waiting time.

The configuration of the present invention that solves this problem is as follows.
1) In a shaft excavation facility in which a scaffold equipped with an excavator is suspended in a shaft, the ground is excavated, the excavation sludge is carried out of the shaft, and concrete is placed on the side wall of the shaft after excavation. Sliding buckets that carry out the mine and concrete buckets that carry concrete from the outside of the mine can be lifted by suspending them with a wire rope inside the vertical shaft, and a through hole is formed in the scaffold to allow the zuri bucket to pass up and down, and discharged to the bottom. A concrete hopper of a size that can pass through a passage hole equipped with a chute is detachably attached to the passage hole, and during excavation, the concrete hopper is removed from the passage hole, and then the slip bucket is passed through the passage hole of the Scaffold to remove the excavation slip. When unloading the concrete and placing concrete, attach a concrete hopper to the passage hole of the scaffold and then close the concrete bucket. The concrete excavation equipment is transported to the concrete hopper and supplied to the side wall of the shaft from the discharge chute so that it can be placed. The shaft excavation equipment as described in 1) above, wherein the floor is formed with through-holes through which the slip bucket / concrete hopper and the concrete bucket can pass 3) The concrete hopper is provided with a plurality of arms on the top of the concrete hopper so as to be radially deployable. The shaft excavation equipment described in 1) or 2) above, wherein the arm that is expanded by dropping into the passage hole of Scaffold is attached to the periphery of the passage hole. 4) A door is provided at the entrance of the shaft. A track for running a concrete bucket truck is provided between the wellhead and a position away from the wellhead. Is concrete in orbit positions were provided with feed conveyor for supplying the concrete bucket, the 1) to 3) in shaft excavation equipment according to any one.

  According to the present invention, concrete can be replenished in parallel with a concrete bucket even during placement, and can be supplied efficiently and in a short time without interrupting placement. Further, since the concrete hopper is arranged in the passage hole of the slip bucket, the conventional occupation space can be omitted and the driving work can be performed even with a small diameter shaft.

  In the present invention, the Scaffold is a double-floor type such as two or three floors to secure a work area and a bucket storage place for construction of a small-diameter shaft, and to efficiently discharge excavation sludge while changing a plurality of sludge buckets. Also good. Further, it is desirable to provide a door at the shaft entrance of the shaft and replenish concrete into the concrete bucket at a position away from the shaft entrance to prevent the concrete from falling into the shaft during replenishment. Embodiments of the present invention will be specifically described below with reference to the drawings.

  1 and 2 are explanatory views of the shaft excavation equipment of the embodiment, FIG. 3 is a plan view of the concrete supply equipment of the embodiment, FIG. 4 is an explanatory view of the concrete hopper of the embodiment, and FIG. 5 is an explanation of the concrete bucket of the embodiment. FIG. 6 is a partial cross-sectional explanatory view showing placement of concrete in the embodiment, and FIG. 7 is a plan view showing a state in which a concrete hopper is arranged on the scaffold in the embodiment.

  In the figure, 1 is a scaffold, 1a is a passage hole, 1b is a hydraulic jack, 1c is a support, 1d is a suspension sheave, 2 is an excavator, 3 is a drilling tower, 3a is a slip chute, 4 is a suspension wire, 5 is a scaffold Ford hoisting machine, 6 is slot bucket, 7 is hanging wire, 8 is slot bucket hoisting machine, 9 is concrete hopper, 9a is chute, 9b is arm, 9c is switching valve, 9d is formwork, 9e is hose, 10 is Concrete bucket, 10a is a hanging tool, 11 is a door, 12 is a track, 13 is a supply conveyor, 14 is a transport cart, 15 is a mixer truck, 16 is a slipping place, 17 is a concrete bucket place, 18 is a slipping place, C is concrete , G is the ground, H is an operator, and T is a shaft.

  As shown in FIGS. 1 and 2, the shaft excavation equipment of this embodiment is provided with an excavator 2 on the lowermost floor of a three-floor type scaffold 1 connected up and down by a column 1 c so that the excavator 2 can turn freely. The section is provided with a hydraulic jack 1b held in pressure contact with the side wall of the shaft T, and through holes 1a having diameters through which the slip bucket 6, the concrete hopper 9, and the concrete bucket 10 can pass are formed at the same position on each floor. The hoisting wire 4 of the hoisting machine 5 is wound around the hoisting sheave 1d provided on the uppermost floor through the top of the excavator and the tower 3 and hung up and down freely.

  As shown in FIG. 3, the shaft T of the vertical shaft T is provided with a door 11, and a track 12 is provided between the door 11 and a position away from the door 11. A supply conveyor 13 for supplying concrete C to the concrete bucket 10 that is moved by the transport carriage 14 is disposed at an upper position.

  As shown in FIG. 4, the concrete hopper 9 is provided with a chute 9a at the lower part, and four arms 9b that rotate horizontally from the downward direction are attached to the upper part in a radially expandable manner. The concrete hopper 9 is large enough to pass through the passage hole 1a of the scaffold 1, and the distance between the ends of the arms 9b when the arms 9b are horizontally deployed is formed to be larger than the inner diameter of the passage hole 1a. As shown in FIG. 5, the concrete bucket 10 is provided with a hanging tool 10 a at the upper part, and is lifted and lowered by using both the sliding bucket hoist 8 and the hanging wire 7.

  In this embodiment, the concrete hopper 9 is mounted on the scaffold 1, the scaffold 1 is suspended in the shaft T, and the ground G is excavated by the excavator 2. The slip bucket 6 is passed through the passage hole 1a of the scaffold 1 by the hanging wire 7 and placed in the bottom of the well, and the excavation slot is inserted. The full bucket bucket 6 is passed through the passage hole 1a to be raised, and the door 11 is moved. It is opened and carried out of the mine, and the excavation slot is discharged to the slot 16.

  When excavating to a predetermined depth, the excavation is temporarily interrupted, the slip bucket 6 is temporarily placed in the outside of the mine or in an empty space on the scaffold 1, and the concrete hopper 9 is lifted by the suspension wire 7 so that the passage hole 1a on the lowest floor of the scaffold 1 is reached. The arm 9b is developed to a horizontal position and hooked around the periphery of the passage hole 1a. A hose 9e is connected to the chute 9a, and a mold 9d is arranged on the side wall to be driven.

  The concrete bucket 10 is placed on the transport carriage 14 and moved below the supply conveyor 13 to operate the supply conveyor 13. A mixer truck 15 that transports concrete C is placed next to the supply conveyor 13, and the concrete C is dropped at the starting end of the supply conveyor 13 and put into the concrete bucket 10. The concrete bucket 10 having reached a predetermined amount moves to the position of the door 11 and is lifted by the suspension wire 7, and the door 11 is opened to lower the shaft T. During the descent, the door 11 is closed.

  The concrete bucket 10 is passed through the passage hole 1a of the scaffold 1 and placed on the top of the concrete hopper 9 as shown in FIG. 6, and the concrete C is transferred to the concrete hopper 9 and poured into the mold 9d by the hose 9e. Set up. If the concrete C in the concrete hopper 9 seems to be insufficient, the concrete bucket 10 is taken out of the mine in parallel with the placing work before it disappears, and the concrete C is put in the same manner as described above, and again in the mine. Refill the concrete hopper 9.

  As described above, in this embodiment, the concrete bucket 10 can be replenished with the concrete C in parallel during the placement, and can be supplied efficiently and in a short time without interrupting the placement. In addition, since the concrete hopper 9 is arranged in the passage hole 1a of the slip bucket 6, the conventional occupation space can be omitted and the driving work can be performed even with a small diameter shaft.

  The shaft excavation equipment of the present invention is preferably used for construction of a deep shaft.

It is explanatory drawing of the shaft excavation equipment of an Example. It is explanatory drawing of the shaft excavation equipment of an Example. It is a top view of the concrete supply equipment of an Example. It is explanatory drawing of the concrete hopper of an Example. It is explanatory drawing of the concrete bucket of an Example. It is a partial cross section explanatory view showing placement of concrete of an example. It is a top view which shows the state which has arrange | positioned the concrete hopper to the scaffold of an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Scaffold 1a Passing hole 1b Hydraulic jack 1c Prop 1d Suspension sheave 2 Excavator 3 Excavator 3a Slitch 4 Suspension wire 5 Scaffold hoist 6 Slipper bucket 7 Suspension wire 8 Slipper bucket hoist 9 Concrete hopper 9a Chute 9b Arm Changeover valve 9d Formwork 9e Hose 10 Concrete bucket 10a Lifting tool 11 Door 12 Track 13 Supply conveyor 14 Carriage truck 15 Mixer truck 16 Sliding place 17 Concrete bucket place 18 Slipping bucket place C Concrete G Ground H Worker T Vertical shaft

Claims (4)

  In a shaft excavation facility in which a scaffold equipped with an excavator is suspended in the shaft to excavate the ground, the excavation sludge is carried out of the shaft, and concrete is placed on the side wall of the shaft after excavation. Sliding buckets to be transported outside and concrete buckets to carry concrete from the outside of the mine can be lifted by suspending them with wire ropes inside the vertical shaft, and a through hole is formed in the scaffold to allow the slipping bucket to pass up and down, and a discharge chute is provided at the bottom. A concrete hopper of a size that can pass through the provided through hole is detachably attached to the through hole, and during excavation, the concrete hopper is removed from the through hole, and then the sludge bucket is passed through the through hole of the Scaffold to move the excavation sludge to the outside of the tunnel. When unloading and placing concrete, attach a concrete hopper to the passage hole of the scaffold and use a concrete bucket. The incoming concrete, characterized in that to allow pouring by supplying concrete to the side wall of the vertical shaft from the discharge chute and transported to the concrete hopper, vertical shaft drilling equipment.   The shaft excavation equipment according to claim 1, wherein the scaffold is a double floor type, and each floor has a passage hole through which a slip bucket, a concrete hopper and a concrete bucket can pass.   A plurality of arms are provided on the upper part of the concrete hopper so as to be radially deployable, and the concrete hopper is dropped into the passage hole of the scaffold and the developed arm is attached to the periphery of the passage hole. Or the shaft excavation equipment of 2 description.   A supply conveyor that supplies a concrete bucket to a concrete bucket on a track at a position away from the wellhead by providing a door at the wellhead and providing a track for transporting the concrete bucket carriage between the wellhead and the position away from the wellhead. The shaft excavation equipment according to any one of claims 1 to 3, which is arranged.

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