JP3046974U - Three-way valve trolley for muddy pressure shield construction - Google Patents

Abstract

(57) [Abstract] [Problem] To facilitate maintenance and inspection of a valve on the mud side of a valve bogie for muddy pressure shield construction. SOLUTION: The casing connected to the face-side exhaust pipe, the well-side exhaust pipe, and the pig insertion chamber-side pipe has a passage for communicating the face-side exhaust pipe with the well-side exhaust pipe, the pig insertion chamber and the well-side. A three-way valve with a built-in valve that can be switched to a passage for communicating the mud pipe, a face-side mud pipe, a wellhead-side mud pipe, and a pig insertion chamber-side pipe connected from three sides, For the pig insertion chamber side piping,
A valve mechanism connecting the valves that open and close each pipe, a hydraulic unit, a water supply tank, and an operation panel are mounted on a truck, and the pig insertion chambers contain water in the water supply tank. Connect a water supply pump to supply water.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the present invention pertains] The present invention relates to a three-way valve truck for muddy water pressure shield construction.

[0002]

[Prior Art] One of the works for excavating a tunnel is a muddy water pressure shielding work. In this work, high-pressure muddy water is sent from the wellhead to the excavating equipment running on rails laid toward the face in the tunnel, and the muddy water is sent from the regulating tank to excavate the ground while maintaining the stability of the face. At the same time, the mud generated by excavation is discharged to the wellhead side. In this muddy water pressure shield construction, additional mud pipes and drain pipes are required in connection with excavation work.

[0003] As a conventional valve truck used for pipe expansion work, as shown in Figs. 7 and 8, a valve mechanism 2 connected to a mud feed line and a valve mechanism 2 connected to a mud discharge line are mounted on a truck 1. Equipped with a rotary valve 3, a water supply tank 4 for storing fresh water, and an operation panel, and water supply pumps 5 and 6 inserted into the water supply tank 4, and a pig mechanism provided in the valve mechanism 2 and the rotary valve 3. Between the chambers 7 and 8, there is a rotary valve carriage connected to water supply pipes 9 and 10 via valves BV1 and BV2.

In this rotary valve bogie, pigs P1 and P2 are inserted into pig insertion chambers 7 and 8, and plate valves GV1 that open and close the respective inlets 7 and 8 by hydraulic cylinders are provided at the inlets of the chambers 7 and 8. Of the valve mechanism 2 and the rotary valve 3, the mud feeding pipe 11 and the mud discharging pipe 12, which are provided toward the face, are knife blades for opening and closing the pipes 11, 12 by an air cylinder. In addition to connecting the valves NV1 and NV2, a hose 15 wound around a hose reel 14 is connected via a hose 13 supported so as to pass through a high position of the bogie 1 as shown in FIG.

[0005] Of the valve mechanism 2 and the rotary valve 3, a mud feed pipe 16 and a mud discharge pipe 17 provided toward the wellhead side are provided with an existing mud feed pipe 18 reaching the shaft as shown in FIG. The drain pipes 21 and 22 via valves BV3 and BV4 are connected to a drain pump 20 installed to drain water to the water supply tank 4, and the water supply pipes 9 and 10 are connected to valves. Drain pipes 23 and 24 are connected to drain water to the water supply tank 4 via BV5 and BV6.

[0006] In the shaft, the shafts V12 and V21 are connected to a mud pipe 18 and a mud pipe 19, and between the mud pipe 18 and the mud pipe 19, and between the mud pipe 18 and the drain pipe. 25, and a communication pipe 28 is connected between the depressurization pipe 26 and the depressurization pipe 27. Valves are connected to portions of the depressurization pipe 26 on both sides of the communication pipe 28. V32 and V33 are connected, and valves V34 and V35 are connected to portions of the depressurizing tube 27 on both sides of the communication tube 28.

[0007] The operation of the conventional rotary valve bogie constructed as described above will be described. The bogie 1 and the hose reel 14 move forward with the excavation of the tunnel, and the hose 15 on the hose reel 14 is fed back. The distance between the valve mechanism 2 and the rotary valve 3 connected to the existing feed / drainage pipes 18 and 19 is increased. The bogie 1 and the hose reel 14 are stopped at every fixed distance, for example, every 6 m, and the existing feed / drainage pipes 18 and 19 are extended (added). If the pipe is cut as it is, the muddy water in the existing feed / drain pipes 18 and 19 will flow out, so that the pig P1 is inserted into the existing feed / drain pipes 18 and 19 from the valve mechanism 2 and the rotary valve 3. , P2, and then disconnect the pipe.

In order to feed the pigs P1 and P2 into the existing feed / drain pipes 18 and 19, first, the knife gate valves NV1 and NV2 on the feed / drain line shown in FIG. The shaft valves V12 and V21 are closed. Next, the valves V32 and V35 in the shaft are opened, and the residual pressure in the existing mud feed pipe 18 is released. Next, the valve BV1 and the plate valve GV1 are opened, the feedwater pump 5 is operated, and the pig P1 on the mud feeding side is pushed with water pressure to feed the mud feeding pipe 18 to the position shown by the dotted line. The mud pushed by the pig P1 is collected by the drain pipe 25. When the feeding of the pig P1 is completed, the valves BV1, V32 and V35 are closed. Next, the valves BV3 and BV5 are opened, the drainage pump 20 is operated, and the water used for feeding the pig P1 is collected in the water supply tank 4 and reused.

When the above operation is completed, the rotary valve 3 is rotated and closed, and then the valves V 33 and V 35 in the shaft are opened to release the residual pressure in the existing drainage pipe 19. Next, the valve BV2 and the plate valve GV2 are opened, the water supply pump 6 is operated, and the pig P2 on the drainage side is pushed by water pressure to be fed to the position shown by the dotted line in the existing drainage pipe 19. The mud pushed by the pig P2 is collected by the drain pipe 25. When the feeding of the pig P2 is completed, the valves BV2, V33, and V35 are closed. Next, the valves BV4 and BV6 are opened, the drainage pump 20 is operated, and the water used to feed the pig P2 is collected in the water supply tank 4 and reused.

When the water used for feeding the pig P2 has been collected, the mud pipes 16 and 17 of the valve mechanism 2 and the rotary valve 3 are separated from the existing pipes 18 and 19, and the hose reel The reel is pulled by the winch 14 and the hose 15 is pulled, and at the same time, the carriage 1 is advanced by about 6 m. Next, new pipes are connected between the mud feed pipes 16 and the mud pipes 17 of the valve mechanism 2 and the rotary valve 3 and the existing feed / drain pipes 18 and 19 so that the existing feed / drain pipes 18 and 19 are connected. (Extension). When the extension of the existing feed / exhaust pipes 18 and 19 is completed, the valves BV5, V32 and V34 are opened, and the pig P1 on the feed side is collected in the chamber 7 using the head pressure of the shaft. The collection of the pig P1 is detected by a limit switch. After the pig P1 is collected, the valves BV5, V32, V34 and GV1 are closed. When the collection of the pig P1 is completed, the valves BV6, V33, and V34 are opened, and the pig P2 on the mud discharging side is collected in the chamber 8 using the head pressure of the shaft. Recovery of pig P2 is detected by a limit switch. After the pig P2 is collected, the rotary valve 3 is opened and the valves BV6, V33, V34, and GV2 are closed. Next, the knife gate valves NV1 and NV2 and the shaft valves V12 and V21 are opened, and the extension work of the existing feed / drainage pipes 18 and 19 is completed, and the excavation is resumed.

[0011]

[Problems to be Solved by the Invention] In the conventional rotary valve bogie described above, since the rotary valve 3 is mounted on the muddy side on the bogie 1, the number of parts of the interlock on the muddy side is large, so Maintenance and inspection are troublesome due to the large number of man-hours required for maintenance. Further, since the plate valves GV1 and GV2 are driven by hydraulic cylinders and the knife gate valves NV1 and NV2 are driven by air cylinders, two types of driving sources are required, which requires a large number of maintenance points and complicated maintenance. There was a problem of becoming. An object of the present invention is to provide a valve truck which can solve the above-mentioned problems by using a three-way valve instead of the rotary valve 3 in the conventional rotary valve truck.

[0012]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention is directed to three sides of a face-side exhaust pipe, a well-mouth exhaust pipe, and a pig insertion chamber-side pipe supported at a low position on a bogie. The casing formed into a shape to be connected should be able to switch between a passage that connects the face-side exhaust pipe with the wellhead-side exhaust pipe and a path that connects the pig insertion chamber and the wellhead-side exhaust pipe. A three-way valve with a built-in driving valve, a face-side mud pipe supported at a low position on the trolley, a wellhead-side mud pipe, and a pig insertion chamber-side pipe are connected from three sides. The pig insertion side pipe has a valve mechanism that connects valves that open and close each of the pipes, a slide pipe fitted to the above-mentioned face side exhaust pipe and mud feed pipe, and a connection to each of these slide pipes. The drainage pipe and the feed pipe A slide mechanism that alternately drives the flue and sludge pipes on the face side to the face side and the wellhead side, a hydraulic unit that sends oil pressure to a hydraulic cylinder connected to all the drive units, a water supply tank, and a control panel A water supply pipe is connected via a valve between the water supply pump mounted in the water supply tank and charged into the water supply tank, and each of the pig insertion chambers. Is characterized by connecting a vacuum device via a valve.

[0013]

[Embodiment of the invention] The casing formed into a shape that is connected to the three sides of the face-side exhaust pipe, the wellhead-side exhaust pipe and the pig insertion chamber-side pipe supported at a low position on the bogie has the face-side exhaust pipe described above. A three-way valve having a built-in valve for driving the pipe so that it can be switched between a passage for communicating the pipe with the wellhead drainage pipe and a passage for connecting the pig insertion chamber and the wellhead side drainage pipe; The face-side mud pipe, wellhead-side mud pipe, and pig insertion chamber-side pipe supported at a lower position are connected from three sides, and these pipes are opened and closed to the face-side mud pipe and the pig insertion chamber-side pipe. A valve mechanism that connects the valves to be driven, a slide pipe fitted to the sludge pipe on the face side and a sludge pipe, a sludge pipe and a sludge pipe connected to each of the slide pipes, The drainage pipe and the feed pipe on the side are cut face side and the wellhead Slide mechanism that drives alternately to the side, a hydraulic unit that sends oil pressure to a hydraulic cylinder connected to all of the drive units, a water supply tank, and an operation panel mounted on a bogie, and a water supply pump that is inserted into the water supply tank. A water supply pipe is connected via a valve between the pump and each of the pig insertion chambers, and a vacuum device is connected via a valve to the drainage pipe and the feed pipe on the wellhead side.

[0014] In the three-way valve bogie for muddy water pressurization shield construction having the above-described configuration, the muddy drain pipe connected to the slide pipe fitted to the face-side drainage pipe provided in the three-way valve and the valve mechanism are provided. The same hose as the hose 15 wound around the hose reel 14 shown in FIG. 7 was connected to the mud feeding pipe connected to the slide pipe fitted to the face-side mud feeding pipe, and provided on a three-way valve. The wellhead-side sludge pipe and the wellhead-side sludge pipe provided in the valve mechanism have a feed / slug circuit similar to the feed / slug circuit shown in FIG. Instead of 21 and 22, a circuit that connects a vacuum device via a valve to the well-side mud pipe provided on the three-way valve and the well-side mud pipe provided on the valve mechanism is connected. During excavation, the three-way valve is driven so that the face-side exhaust pipe and the wellhead-side exhaust pipe communicate with each other, and the other operations are the same as those described for the conventional rotary valve bogie on the operation panel. do. In addition, when extending the existing feed / exhaust pipe, the three-way valve is driven so that the pig insertion chamber and the wellhead-side exhaust pipe communicate with each other, and the sliding mechanism provides a face-side exhaust pipe provided on the three-way valve. And the face-side mud pipe provided in the valve mechanism is slid to the wellhead side, and the wellhead-side mudpipe provided in the three-way valve and the wellhead-side mud pipe provided in the valve mechanism are provided. Adjust so that each pipe is joined to a new pipe extended to the mud pipe. Otherwise, the same operation as that described for the conventional rotary valve cart is performed on the operation panel.

[0015]

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 6. 29 is a tunnel, and 30 is laid on a mud pressurization work site in a tunnel 29 from a pit side to a face side in a tunnel 29. A rail 31 is a carriage for traveling on the rail 30, and a reference numeral 32 is a three-way valve mounted on the rear of the carriage 31, which is supported diagonally downward with the face-side exhaust pipe 33 supported at a low position on the carriage 31. As shown in FIG. 5, a casing 37 formed into a shape connected to three sides of a pipe 36 communicating with a pig insertion chamber 35 supported above the wellhead-side exhaust pipe 34 and the face-side exhaust pipe 33 as shown in FIG. An oil pressure cylinder is used to switch between a passage 38 for communicating the mud pipe 33 and the wellhead exhaust pipe 34 and a passage 39 for communicating the pig insertion chamber 35 and the wellhead exhaust pipe 34 as shown in FIG. Drive And a built-in valve 40. 41 is a connecting pipe for connecting the existing sludge pipe to the wellhead-side sludge pipe 34, 42 is a slide pipe fitted to the face-side sludge pipe 33, 43 is a connecting member 44 for connecting to the face-side sludge pipe 33. The slide plate 43 is alternately driven to the face side and the wellhead side by a hydraulic cylinder 45 installed on the carriage 31, and the movement is transmitted to the face side mud pipe 33 via the connecting member 44. Is done. The slide plate 43, the connecting member 44, and the hydraulic cylinder 45 constitute a slide mechanism for the face-side exhaust pipe 33, and adjusts the connection between the connection pipe 41 and a new pipe extended to the existing exhaust pipe. Reference numeral 46 denotes a sludge pipe connected to the slide pipe 42, to which a hose similar to the hose 15 wound around the hose reel 14 shown in FIG. 7 is connected.

Numeral 47 denotes a valve mechanism mounted at the rear of the bogie 31. The valve mechanism 47 is a face-side muddy pipe 48 supported at a low position on the bogie 31, a pit-side muddy pipe 49 supported obliquely downward, and a face-side muddy pipe 49. A pipe 51 communicating with a pig insertion chamber 50 supported above the mud pipe 48 is connected from three sides, and a knife gate valve 52 for driving the pipe 48 to be opened and closed by a hydraulic cylinder is connected to the face-side mud pipe 48. The pipe 51 is connected to a plate valve 53 that drives the pipe 51 to open and close by a hydraulic cylinder. 54 is a connecting pipe for connecting the existing mud feeding pipe to the wellhead-side mud feeding pipe 49, 55 is a slide pipe fitted to the face-side mud feeding pipe 48, and 56 is a connecting member 57 to the face-side mud feeding pipe 48. The slide plate 56 is connected to the slide plate 56 by a hydraulic syringe 58 installed on the bogie 31 so as to be alternately slid to the face side and the wellhead side, and the movement is transmitted through the connection member 57 to the face side. It is transmitted to the side mud pipe 48. The slide plate 56, the connecting member 57, and the hydraulic cylinder 58 constitute a slide mechanism of the face-side mud feed pipe 48, and adjust the connection between the connecting pipe 54 and a new pipe extended to the existing mud feed pipe. Reference numeral 59 denotes a mud feeding pipe connected to the slide pipe 55, to which a hose similar to the hose 15 wound around the hose reel 14 shown in FIG. 7 is connected. It should be noted that instead of connecting the drainage pump 20 and the drainage pipes 21 and 22 in the feed / discharge circuit shown in FIG. Connect the vacuum device.

Reference numeral 60 denotes a hydraulic unit installed in front of the bogie 31 to send hydraulic pressure to a hydraulic cylinder connected to the entire drive unit. Reference numeral 61 denotes a water supply tank installed at a high position in front of the bogie 31. Reference numerals 62 and 63 denote water supply pumps inserted into the water supply tank 61. A valve 64 is provided between the water supply pump 62 and the pig insertion chamber 35. A water supply pipe 65 via a valve 66 is connected between the water supply pump 63 and the pig insertion chamber 50. Reference numeral 68 denotes an operation panel installed at a position in contact with the water supply tank 61, reference numeral 69 denotes a frame fixed so as to cover the pig insertion chambers 35 and 50 at the rear on the trolley 31, and reference numeral 70 denotes the trolley 31 from the upper side of the frame 69. A hanger rail 71 fixed so as to protrude to one side of the hoist is a hoist movably hung on the hanger rail 70, pulls up the pig insertion chambers 35 and 50, and pulls them up on the rail 72 laid on one side of the carriage 31. After being placed on the battery locomotive 73 running above, the new pig insertion chamber is pulled up and replaced with the pig insertion chambers 35 and 50. The pig insertion chambers 35 and 50 placed on the battery locomotive 73 are carried to the wellhead. A traveling motor 74 is provided in front of the bogie 31. A chain 79 is wound around a sprocket 75 fixed to the shaft of the bogie 31 and a sprocket 78 fixed to the axle 77 of the wheels 76 of the bogie 31. Is transmitted to the wheels 76 to cause the carriage 31 to travel. Reference numeral 80 denotes a wind tube installed on the opposite side of the trolley 31, which constantly sends new air to the face.

The three-way valve truck according to this embodiment moves forward with the hose reel along with the excavation, the hose on the hose reel is extended backward, and the three-way valve 32 and the valve mechanism 47 connected to the existing pipe are connected. By extending the interval, the same operation as described for the rotary valve bogie is performed on the operation panel 68 at a constant distance, for example, at every 6 m excavation, to extend the existing feed / drainage pipe. .

[0019]

[Effects of the Invention] The present invention has the following effects because it is configured as described above. In the conventional rotary valve bogie, a rotary valve consisting of a plurality of parts was used on the mud side, but in the present invention, a three-way valve consisting of one part was used on the mud side. , The number of parts of the interlock is reduced. This reduces the man-hours required for maintenance and makes maintenance and inspection easier. Operation becomes easy only on the sludge side. The pig is surely returned only on the sludge side. Water used to feed the mud-side pig and the mud-side pig into the existing feed / drainage pipes, and the somewhat dirty water is removed from the well-side mud pipe of the three-way valve and the well-side of the valve mechanism. It can be suctioned from the mud pipe by a vacuum device and processed. The number of failure points is smaller than that of a rotary valve cart. The rotary valve bogie has an air drive unit in addition to a hydraulic drive unit, and requires two types of power sources. However, in the present invention, all drive units are hydraulically driven, so only one power source is required. , Maintenance points are reduced. Since the mud pipe and mud pipe on the face side are supported at a low position on the bogie, the rotary valve bogie eliminates the need for two expensive hoses that are supported above the bogie for both feed and mud, making it inexpensive. Iron pipes can be used, and work at high positions on the bogie is reduced. In a rotary valve, the connection port connecting the face-side exhaust pipe to the wellhead-side exhaust pipe has a long hole, so a pig longer than the long hole must be used for the pig on the mud side. In the present invention, since the three-way valve is used, the length of the pig on the sludge side can be shortened.

[Brief description of the drawings]

FIG. 1 is a side view of the three-way valve bogie according to the present invention on the mud discharge side.

FIG. 2 is a right side view of FIG.

FIG. 3 is a side view of a mud feeding side of the three-way valve truck.

FIG. 4 is a plan view of the valve carrier.

FIG. 5 is a view showing a state in which the three-way valve is switched so that the face-side exhaust pipe and the wellhead-side exhaust pipe communicate with each other.

FIG. 6 is a diagram showing a state in which the three-way valve is switched so that the pig insertion chamber communicates with the wellhead-side exhaust pipe.

FIG. 7 is a side view showing a state in which a hose reel is connected to a face side of a conventional rotary valve carriage.

FIG. 8 is a circuit diagram of feeding and discharging mud connected to the wellhead side of a conventional rotary valve truck.

[Explanation of symbols]

 Reference Signs List 31 cart 32 three-way valve 33 face-side exhaust pipe 34 wellhead-side exhaust pipe 35 pig insertion chamber 37 casing 38 passage 39 passage 40 valve 42 slide pipe 43 slide plate 44 connecting member 45 hydraulic cylinder 46 exhaust pipe 47 valve mechanism 48 face Side mud pipe 49 Wellhead side mud pipe 50 Pig insertion chamber 52 Knife gate valve 53 Plate valve 55 Slide pipe 56 Slide plate 57 Connecting member 58 Hydraulic cylinder 59 Mud feed pipe 60 Hydraulic unit 61 Water supply tank 62, 63 Water pump 65, 67 Water supply pipe 68 Operation panel

Claims (1)

[Utility model registration claims] 1. A casing formed in a shape connected to three sides of a face-side exhaust pipe, a wellhead-side exhaust pipe, and a pig insertion chamber-side pipe supported at a low position on a bogie, the face-side exhaust pipe is provided with the face-side exhaust pipe. A three-way valve having a built-in valve that is driven to be switched between a passage for communicating with the wellhead-side exhaust pipe, a passage for communicating the pig insertion chamber and the wellhead-side exhaust pipe, and a lower position on the bogie. The supported face-side mud pipe, wellhead-side mud pipe and pig insertion chamber-side pipe are connected from three sides, and the face-side mud pipe and the pig insertion chamber-side pipe are provided with valves for opening and closing these pipes. A valve mechanism connected thereto, a slide pipe fitted to the sludge pipe on the face side and a sludge pipe, a sludge pipe and a sludge pipe connected to each slide pipe, and a sludge pipe on the face side. And the mud pipe are alternately driven to the face side and wellhead side A sliding mechanism, a hydraulic unit that sends oil pressure to a hydraulic cylinder connected to the entire drive unit, a water supply tank, and an operation panel are mounted on a trolley, and a water supply pump inserted into the water supply tank and each of the pigs are inserted. A water supply pipe is connected between the chamber and a valve, and a three-way valve for muddy pressure shield construction is connected to the above-mentioned wellhead drainage pipe and muddy pipe by connecting a vacuum device via a valve. Trolley.