JPH0594395U - Sediment screening equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a sediment sieving device that can realize a pipeline pressure-feeding system using a pressure-feeding pump without trouble even if gravel is mixed in the sand. [Structure] The earth and sand sieving device 21 includes a sieving plate 23 for sieving the sand, a vibrator 25 provided on one side of the sieving plate 23, and a sieving plate 23 provided on the other side of the sieving plate 23. And a coil spring 27 that elastically supports the sieving plate 23,
It is arranged at the earth and sand inlet 501 of the earth and sand pump 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for sieving earth and sand, and more particularly, to an apparatus for sieving earth and sand which is suitable for use in the case of carrying earth and sand by a pipe pressure feeding method using a pressure feeding pump.

[0002]

[Prior Art]

 For example, in the shield construction method, the excavated soil excavated by the cutter at the tip of the shield machine is transported inside the segment and carried out of the mine. When the pipeline pumping method using a pump was adopted to transport such excavated soil, there were the following problems.

That is, in the pipeline pressure-feeding method using a pressure-feeding pump, the pressure-feeding unit, the pressure-feeding pipe, and the like are designed according to the earth and sand to be transported. The design is made on the assumption that the earth and sand is sand. However, when actually excavating, there is a case where gravel is mixed in the excavated soil, and when gravel is mixed in the device designed in this way, this gravel blocks the pumping section and pumping pipe. Occurs. Therefore, when transporting excavated soil from inside the segment to the outside of the mine, the conventional pipe pressure method is not used. For example, a rotating bucket with a capacity of 0.5 m ³ is loaded on a trolley, transported by a battery logo, and transferred by an overhead crane. They pulled it up, loaded it into a tank car, and carried it out.

[0004]

[Problems to be solved by the device]

 However, with such a sediment transport system, tunnel workability is extremely poor, such as the fact that a shield machine cannot excavate during transport of excavated soil, and improvements in process and cost have been desired. The present invention has been devised in view of the above circumstances, and an object of the present invention is to perform a soil and sand sieving that can realize a pipeline pressure-feeding system using a pressure-feeding pump without any trouble even when gravel is mixed in the soil. To provide a device.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a sieving plate for sieving sand, a vibrator provided on one side of the sieving plate described above, and an oscillating plate provided on the other side of the sieving plate. And a coil spring for supporting. Further, the present invention is characterized in that the sieving plate is disposed at a sediment carrying port of a sediment pump.

[0006]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an explanatory diagram of transportation of earth and sand in a segment mine. 1 indicates the inside of the segment mine, and the excavated soil excavated by the cutter at the tip of the shield machine is transported to the rear of the shield machine by the first screw conveyor (not shown) and the second screw conveyor 3, and further by the pressure pump 5. It is transported to the outside of the mine.

The second screw conveyor 3 is arranged so that its downstream end is higher than its upstream end, and the downstream end of the second screw conveyor 3 is installed above the earth / sand loading port 501 of the pressure pump 5. Has been done.

The pressure pump 5 is supported by a base frame 11 traveling on a rail 9, and is arranged so as to follow the shield machine and move forward as the shield machine excavates. The pressurizing pump 5 includes a tube body 503 supported on the base frame 11 and extending in the longitudinal direction of the tunnel, a screw blade 505 arranged inside the tube body 503, and a drive for rotating the screw blade 505. It comprises an apparatus 507, a hopper 509 arranged below the downstream end of the pipe body 503, a drive cylinder 513 for pushing out earth and sand in the hopper 509 from the pressure pipe 511, and the like. The operation of the drive cylinder 513 is performed via a hydraulic unit (not shown). In FIG. 1, reference numeral 515 indicates a control valve and a solenoid valve.

The earth and sand put into the pipe body 503 from the second screw conveyor 3 and the earth and sand carrying-in port 501 is sent into the hopper 509 by the screw blade 505, and the driving cylinder 513 makes the pressure pipe 511 and the pressure pipe 511 from the inside of the hopper 509. It is carried out of the tunnel mine via pipe 517. The pressure pump 5 is designed with the above-mentioned components and locations on the assumption that the earth and sand to be transported is sand.

Reference numeral 21 denotes a sediment sieving apparatus according to this embodiment. The earth and sand sieving device 21 is installed on the pipe body 503 of the pressure pump 5, and the earth and sand sieving device 21 is composed of a sieving plate 23 for earth and sand sieving, a vibration motor 25, a coil spring 27 and the like. 2 is an enlarged side view of the earth and sand sieving device, and FIG. 3 is a plan view of the same. The sieving plate 23 is configured by laying a flat steel 2303 on a rectangular frame 2301 at intervals of 60 mm, and the sieving plate 23 is arranged above the earth and sand carrying-in port 501 of the pressure pump 5.

Both ends on one side of the sieving plate 23 are swingably supported on the pipe body 503 via stays 2305, bolts 2307, and rubber washers 2309, respectively. Both ends of the other side of the sieving plate 23 are elastically supported by coil springs 27. The coil spring 27 is wound around a shaft 2311 projecting from the pipe body 503. The shaft 2311 is inserted through the frame 2301 of the sieving plate 23, and the frame 2301 is urged upward by the coil spring 27. The upper limit position is regulated by the double nut 2313 attached to the upper end of the shaft 2311. The vibration motor 25 is arranged on the upper surface of one side of the sieving plate 23.

According to the earth and sand sieving apparatus 21 according to the present embodiment, the operation of the vibration motor 25 causes the sieving plate 23 to vibrate, and this vibration is amplified by the coil spring 27. Therefore, the sieving work of the sand and sand by the sieving plate 23 is efficiently performed, and the excavated soil discharged from the downstream end of the second screw conveyor 3 is thrown into the pressure pump 5 from the sand and sand inlet 501 after the gravel is removed. From the pipe body 503 to the inside of the hopper 509.

Then, the pipe 503, the hopper 509, the pressure pipe 511, the pressure feed pipe 517, and the like are not blocked, and the drive cylinder 513 pressure feeds the soil and sand. Therefore, since the earth and sand can be transported in the shield work by the pipe pressure feeding method using the pressure pump 5, the excavation soil can be excavated and the tunnel workability can be improved. Aspect, cost problems can be solved.

In the embodiment, the case where the present invention is applied to the pressure pump of earth and sand in the shield construction has been described, but the application and the location of the present invention are not limited to the embodiment.

[0015]

[Effect of the device]

 As described above, according to the present invention, a sieving plate for sieving sand, a vibrator provided on one side of the sieving plate, and an oscillating plate provided on the other side of the sieving plate, and the sieving plate is elastic. Since the earth and sand sieving device is configured with the coil springs that support it, it is possible to efficiently perform the earth and sand sieving work, and even if gravel is mixed in the earth and sand, it is possible to perform pipe pressure feeding using a pressure feed pump without any hindrance. Become.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of transportation of earth and sand in a segment mine.

FIG. 2 is an enlarged side view of the earth and sand sieving device.

FIG. 3 is a plan view of the earth and sand sieving device.

[Explanation of symbols]

 1 segment underground 3 screw conveyor 5 pressure pump 21 earth and sand sieving device 23 sieving plate 25 vibration motor 27 coil spring 501 earth and sand inlet 503 pipe 505 screw blade 507 hopper 513 drive cylinder 517 pressure feed pipe

Claims (2)

[Scope of utility model registration request] 1. A sieving plate for sieving earth and sand, a vibrator provided on one side of the sieving plate, and a coil spring provided on the other side of the sieving plate and elastically supporting the sieving plate. Sediment sieving device characterized by that. 2. The earth and sand sieving apparatus according to claim 1, wherein the sieving plate is arranged at an earth and sand loading port of the earth and sand pump.