JP2849935B2 - Shaft excavation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a shaft excavator.

<Prior Art> Currently, shaft excavation is performed by hand excavation while aiming at a ridge, mechanical excavation using a breaker, excavator, or the like, or in combination.

<Problems to be Solved by the Present Invention> The above-described conventional shaft excavation technology has the following problems.

<B> In the case of mechanical excavation, it is difficult to obtain a reaction force for excavation, and excavation efficiency is low.

<B> Since the breakers and excavators that can be used are limited to small ones, it is difficult to obtain sufficient excavating power.

<C> Since the work is performed in a narrow space, there is still anxiety about ensuring work safety.

<Object of the present invention> The present invention has been made in view of the above points, and an object of the present invention is to provide a shaft excavation device capable of improving workability, economy, and work safety. It is in.

<Means for Solving the Problems> That is, the present invention relates to an upper pedestal equipped with a plurality of sets of upper reaction force cylinders that radially project, and a plurality of radially projecting radially arranged opposed to the upper mount. A lower gantry equipped with a pair of lower reaction cylinders, and an excavator movably mounted on the lower gantry, a plurality of lifting / lowering cylinders for adjusting the opposing distance between the two gantry, and the upper reaction cylinder and the lower gantry. Attach the clamps that can be freely opened and closed to the free end, and hold each horizontal ring and vertical guide rail laid on the liner plate of the shaft by the clamp, thereby excavating reaction force with the liner plate, each horizontal ring and the vertical guide rail. A vertical shaft excavator, characterized in that:

<Description of the Present Invention> Hereinafter, the present invention will be described with reference to the drawings.

<A> Overall explanatory view of the excavator Fig. 2 shows a vertical sectional view of the shaft 1 in which the excavator according to the present invention is provided.

In the figure, reference numeral 2 denotes a liner plate for suppressing collapse of the hole wall of the shaft, 3 denotes a horizontal reinforcing ring attached at a fixed distance on the inner peripheral surface of the liner plate 2, and 4 denotes a plurality of vertical laying members laid inside the horizontal reinforcing ring 4. It is a guide rail.

The excavator of the present invention excavates while obtaining a reaction force on the horizontal reinforcing ring 3 and the group of vertical guide rails 4 attached to the liner plate 2.

Specifically, the excavator includes upper and lower pedestals 5 and 6 arranged in parallel to face each other, a plurality of elevating and lowering cylinders 7 for adjusting the opposing distance between the two pedestals 5, 6, and the upper pedestal 5 radially. It comprises a plurality of sets of upper reaction force cylinders 8 that protrude and a plurality of sets of lower reaction cylinders 9 that protrude radially to the lower gantry 6.

Therefore, the soil reaction force due to excavation is limited to the liner plate 2
And the horizontal reinforcing ring 3 and the vertical guide rail 4.

In addition, the shape of both the gantry 5 and 6 is not particularly limited, and is determined in consideration of the cross-sectional diameter of the shaft 1 and the like.

<B> Structure of the tip of the cylinder At the free end of each of the reaction force cylinders 8 and 9, clamps 10 and 11 which are held and released by hydraulic means or mechanical means are attached, respectively.

However, as shown in FIG. 3, the clamps 10 of the upper reaction cylinders 8 have the same orientation so that the horizontal reinforcing ring 3 can be gripped and released. As shown in FIG. 4, the vertical guide rail 4 is gripped,
The direction is unified so that it can be opened.

Also, it is needless to say that the mounting directions of the clamps 10 and 11 may be combined upside down.

<C> Drilling means and earth discharging means The drilling device of the present invention can be used for various excavators 12 according to the ground to be drilled.
Is mounted on the lower frame 6 so as to be able to run freely.

The excavator 12 has a horizontal turning function in addition to the horizontal traveling function.

The number of excavators 12 is not limited to one, and a plurality of excavators may be provided.

The excavator 12 includes an excavator 13 as shown in FIG.
Unloading conveyor 14 and the unloading conveyor 14
And a bucket 15 which is detachably set at the rear of the device.

In the excavation section 13, bits corresponding to the excavation ground are planted on the peripheral surface of the rotating drum.

A belt-type conveyor or the like can be used as the discharging conveyor 14.

The excavation unit 13 and the earth discharging conveyor 14 are integrally attached to a rigid frame (not shown).

Further, the interval between the excavating unit 13 and the earth discharging conveyor 14 needs to be set to an interval at which the earth shaving can be loaded on the earth discharging conveyor 14 by using the rotation of the excavating unit 13.

Further, the bucket 15 is configured to be detachable above the excavator 12 by a fitting type using a combination of a groove and a rail or a latching type using a hook.

<Operation> Next, a method of moving the excavator will be described.

<A> Fixation of Upper Stand (FIG. 2) The upper reaction force cylinder 8 of the upper stand 5 is extended, and each clamp 10 is fixed to the horizontal reinforcing ring 3.

Thus, the upper base 5 is fixed, and the liner plate 2, the horizontal reinforcing ring 3, and the vertical guide rail 4 secure the soil reaction force due to excavation.

<B> Lowering of the Lower Stand (FIG. 2) Next, after releasing the clamp 11 of the lower reaction cylinder 9 from the vertical guide rail 4, the lifting cylinders 7 are simultaneously extended.

Excavator together with the lower gantry 6 by extension of the lifting cylinder 7
12 drops.

<C> Fixing the lower frame (FIG. 2) The lower reaction cylinder 9 is extended, and the clamp 11 is fixed to the vertical guide rail 4.

As a result, the upper and lower pedestals 5 and 6 of the excavator are fixed to the liner plate 2.

By fixing the upper and lower pedestals 5 and 6, the soil reaction force due to the excavation can be secured in two upper and lower stages.

<D> Excavation and earth removal (Figs. 1 and 2) Since the reaction force of the excavator 12 is finally supported by the liner plate 2, excavation can be performed efficiently in a stable state.

That is, as shown in FIG. 1, the excavated soil excavated by the excavation unit 13 is transferred to the excavating conveyor 14, and the excavating conveyor 14 transports the excavated soil to the upstream of the excavator 12 and is collected by the cassette type bucket 15. .

Once a certain amount of soil has been accumulated in bucket 15, bucket 15
Only the excavator 12 is removed and lifted to the ground.

And set a separate empty bucket 15 on the excavator 12,
Continue drilling.

<E> Lowering of the upper gantry Next, the excavation by the excavator 12 is temporarily interrupted, and the entire excavator is moved downward by the next operation.

First, as shown in FIG. 5, the clamp 10 is released from the horizontal reinforcing ring 3, and the upper reaction force cylinder 8 is contracted.

Then, the lift cylinder 7 is contracted to lower the upper gantry 5.

At this time, the weight of the excavator is the lower reaction force cylinder 9,
It is supported by the liner plate 2 via the clamp 11 and the vertical guide rail 4.

The liner plate 2, the horizontal reinforcing ring 3, and the vertical guide rail 4 keep the lower mount 6 during the lowering of the upper mount 5.
, A sufficient retaining effect can be obtained.

<F> Fixing the upper frame (FIG. 6) Next, the upper reaction cylinder 8 is extended and fixed to the lower horizontal reinforcing ring 3.

As described above, the above steps are repeated so that the upper and lower pedestals 5 and 6 are moved into a worm-like shape by the extension and contraction operation of the lifting cylinder 7 and the extension and contraction operation of the reaction force cylinders 8 and 9 to excavate to a predetermined depth.

Accordingly, the liner plate 2 is constantly pressed against the digging surface, and it is possible to prevent the ground on the back of the digging from loosening.

<Effects of the Present Invention> The present invention has the following effects.

<A> By installing a detachable bucket at the rear of the excavator, soil removal can be collected efficiently.

<B> Temporary placement of a spare bucket on the upper or lower gantry and exchanging the bucket can reduce the waiting time for excavation.

<C> A sufficient excavation reaction force can be obtained from the liner plate.

Therefore, it becomes possible to equip an excavator with a large excavation ability, and the excavation efficiency is improved.

<D> Not only does the need for manual digging be eliminated, but also the remote control of the digging rig allows for improved work safety.

<E> Since the descent of the excavator can be performed easily and in a short time, the construction period can be shortened.

<F> Because the reaction force is easy to take, the space for passing the bucket can be secured sufficiently wide, and the earth discharging capacity is high.

[Brief description of the drawings]

 Fig. 1: Perspective view of an excavator as a main part of the present invention Fig. 2: Overall view of an excavator Fig. 3: Cross-sectional view of III-III in Fig. 1 Fig. 4: IV-IV in Fig. 1 Fig. 5: Illustration of lowering operation of upper pedestal Fig. 6: Illustration of fixing operation of upper pedestal

Claims (1)

(57) [Claims] 1. An upper pedestal equipped with a plurality of sets of upper reaction cylinders that protrude radially, and a plurality of sets of lower reaction cylinders that are arranged in parallel to face the upper mount and protrude radially. In a lower frame and an excavator movably mounted on the lower frame, a plurality of lifting / lowering cylinders for expanding and contracting an opposing distance between the two frames, and a clamp capable of gripping and opening / closing the free ends of the upper reaction force cylinder and the lower frame. And mounting the horizontal ring and the vertical guide rail laid on the liner plate of the shaft by the clamp, thereby obtaining an excavation reaction force with the liner plate, each horizontal ring, and the vertical guide rail. Drilling rig.