JPH0234313Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention relates to a shaft excavation earth conveying device.

(Prior art) Conventionally, in a shaft construction method such as a shaft for the foundation of a high-voltage power transmission tower, a person puts excavated soil into a bucket, lifts it to an above-ground hopper above the shaft using a crane or winch, and discharges it. Then, the work must be transported to a long distance using a dump truck, which is extremely dangerous, labor-intensive, and extremely inefficient. At construction sites in narrow urban areas where trucks cannot enter, problems of construction difficulties and noise and vibration pollution are unavoidable.

(Technical issue) Therefore, with this invention, even in places where large crane trucks or dump trucks cannot enter, such as narrow urban areas, long-distance pipeline transportation can be carried out safely and without causing pollution. The technical problem is to enable smooth and easy transport of excavated earth and sand, and to enable work to be carried out in an efficient manner that can handle any type of earth and sand.

(Technical Means) This invention was made in order to solve the above-mentioned technical problem, and the embodiments shown in the drawings will be explained in detail below. First, 1 is a telescopic pump constructed as follows. Reference numeral 2 denotes a vertical cylinder main body in which a suction pipe 3 penetrating perpendicularly through a lower end face is provided with a discharge port 4 at a corresponding position on the upper end face communicating with an earth discharge pipe 5 extending upward, and the vertical cylinder main body 2 Inside, there is a valve 7 with integral connecting pipes 8a and 8b at both upper and lower ends.
an upper telescopic cylinder 6a with valves a and 7b interposed therein, and a lower telescopic cylinder 6b with the valve 7b interposed in communication at its upper end; 3. They are connected and fixed to the upper ends of each of the parts. Then 10 is the valve 7b and the connecting pipe 8b
The fittings 10a, 10a of the sliding frame are fitted onto a rail 11 extending in the axial direction of the inner surface of the vertical cylinder body 1, and are vertically slidable along the rail 11. Reference numeral 9 designates a projecting plate integral with the connecting pipe 8b, to which the tip of a piston rod of a telescopic jack 13 whose base end is connected to the bracket 12 on the upper valve 7a side is pivotally connected. By operating the telescopic jack 13, the telescoping cylinders 6a and 6b extend and contract, and the earth and sand sucked in from the lower end suction pipe 3 are intermittently sent out from the upper end discharge port 4 through the earth discharge pipe 5. This constitutes the dynamic pump 1. Note that 28 is a buckling prevention tube for the vertically extendable tubes 6a and 6b. Further, in the embodiment shown in the drawings, bellows type cylinders made of an elastic material such as rubber are used as the telescoping cylinders 6a and 6b, but telescopic cylinders in the form of telescopic cylinders as shown in Fig. 3 may also be used. Therefore, it is preferable to use a crushing valve having a blade on the valve body and capable of crushing, as shown in the embodiment shown in the drawings. Below the telescopic pump 1 configured as described above, there is a transfer cylinder 1 whose outlet port 15a communicates with the suction pipe 3.
A horizontal transfer device 14, which is driven by a motor 16 and has a rotary shaft 17 having screw blades 18 on its outer periphery, is installed horizontally within the horizontal transfer device 5. Further, an integrated kneading hopper 20 is provided above in communication with the supply port 15b of the transfer tube 15 of the horizontal transfer device 14. In addition, the kneading hopper 20
is equipped with a stirring blade 19 driven by a motor 27, and is provided with an injection pipe 29 through which water or slurry material can be injected into the interior from the outside.

The earth and sand conveying device A having the above configuration includes a guide rail 2 that constitutes a tower 23 in an excavated pit 21.
It is connected to a wire 25 from a hoisting machine 24, such as a winch or a crane, on a turret 23 so that it can be suspended and moved along the turret 23. Note that 26 is a dump truck located at an appropriate position on the ground, and the earth removal pipe 5 extends to above the loading platform of the dump truck 26.

(Function) First, the motors 27 and 16 are started to rotate the stirring blade 19 and the screw rotating shaft 17, and the telescopic jack 13 and the valves 7a and 7b are appropriately operated to mix the excavated earth and sand in the pit 21. When the water or slurry is sequentially poured into the hopper 20 and water or slurry is injected as necessary through the injection pipe 29,
The excavated soil is kneaded in the mixing hopper 20 by stirring blades 19 into a fluidized state, then horizontally transferred by the screw blades 18 of the horizontal transfer device 14, and then pumped from the suction pipe 3 by the pumping action of the telescoping pump 1. It is sucked in and intermittently sent out to the ground from the upper end discharge port 4 via the earth discharge pipe 5, and is transported by a dump truck 26 on the ground. As the pit 21 is excavated, the earth and sand conveying device A is successively lowered by the operation of the hoisting machine 24. Note that the pumping action of the telescopic pump 1 is
To explain with a diagram, first, the valve 7a is opened and the valve 7b is closed in the state shown in FIG. As it goes, the earth and sand in the upper telescopic cylinder 6a, which has been stretched tightly, is sequentially sent out from the valve 7a to the earth removal pipe 5 side, and the earth and sand from the horizontal transfer machine 14 side passes through the suction pipe 3 and enters the lower telescopic cylinder 6b. They are sucked in one after another. Then, both of them are fully expanded and contracted, resulting in the state shown in FIG. 2C. Then, after the valve 7a is closed and the valve 7b is opened, the upper telescoping cylinder 6a is extended and the lower telescoping cylinder 6b is fully contracted, as shown in FIG. 2A.
By repeating the above action, the earth and sand sucked in from the suction pipe 3 is intermittently sent out to the earth discharge pipe 5 side.

(Effects) As mentioned above, the shaft excavation earth and sand conveyance device of this invention uses a telescopic pump to convey the soil through a pipeline system, so it is extremely safe to work with, and the earth and sand conveyance system is very safe. This has the outstanding effect of allowing excavated soil to be easily transported over long distances to any remote location on the ground. In addition, it can easily transport excavated soil even in narrow work sites in urban areas where large crane trucks and dump trucks cannot fit, eliminating construction difficulties and noise pollution in urban areas. It has an excellent effect in transporting earth and sand while the lining board is still in place during work and urban construction work. In addition, the excavated soil can be mixed with appropriate water or slurry through the injection pipe and put into the mixing hopper by stirring and kneading to give it the fluidity that is most easily conveyed, and the telescopic pump has strong conveying power. Combined with this, it is possible to carry out efficient and efficient conveyance work in any soil condition.

[Brief explanation of drawings]

The drawings show an embodiment of this invented device, with Fig. 1 being a longitudinal sectional front view of the main parts, Fig. 2 A, B, and B.
3 is a longitudinal sectional view of another embodiment of the telescopic cylinder, FIG. 4 is an explanatory view of the operating state, and FIG. 5 is a plan view thereof. 1...Telescopic pump, 2...Vertical cylinder body, 3...
Suction pipe, 4...Discharge port, 5...Discharge pipe, 6a, 6
b...Telescopic cylinder, 7a, 7b...Valve, 8a, 8b
... Connection pipe, 9 ... Veneer, 10 ... Sliding frame, 10
a...Insert, 11...Rail, 12...Brocket, 13...Telescopic jack, 14...Horizontal transfer machine, 15...Transfer cylinder, 15a...Outlet port, 15b
... Supply port, 16 ... Motor, 17 ... Rotating shaft, 18 ... Screw blade, 19 ... Stirring blade, 20 ... Kneading hopper, 21 ... Vertical shaft, 22
... Guide rail, 23 ... Turret, 24 ... Hoisting machine, 25 ... Wire, 26 ... Dump truck, 27 ... Motor, 28 ... Buckling prevention cylinder, 2
9... Injection pipe, A... Sediment conveyance device.

Claims (1)

[Scope of utility model registration request] A telescopic pump in which a telescoping cylinder with valves interposed at each end is installed in the vertical cylinder body so that earth and sand sucked in from the lower end suction pipe by telescopic movement are intermittently sent out from the upper end discharge port through the earth discharge pipe. , a horizontal transfer machine integrated with the telescopic pump and communicating with the suction pipe, and a kneading hopper with an injection pipe connected to the supply port of the horizontal transfer machine, so that it can be suspended and moved by a hoisting machine, etc. Vertical excavation earth and sand transport equipment.