JP2570105Y2 - Cable connection device for shield excavator erector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a cable connection for a shield machine erector that supplies electric power by connecting cables from a fixed side to an erector that assembles segments by rotating in a shield body of the shield machine. With regard to the device, it is possible to secure a space in a turning inner diameter portion of the erector.

[0002]

2. Description of the Related Art A shield construction method, which is one of tunnel construction methods for excavating a steel frame called a shield while propelling a steel frame, is used for construction of soft ground or a tunnel in an urban area. An excavator is used.

[0003] In this shield excavator, a cylindrical shield frame is propelled by a shield jack in association with excavation by a cutter at a tip end, and segments are assembled using an erector in a space formed by advancing, and excavation and segment excavation are performed. To assemble a tunnel.

An erector 1 for assembling the segments is, for example, as shown in FIG. 3, concentrically with the shield main body 2 by a plurality of wheels 3 rolling along the inner periphery of a tail portion of the shield main body 2. It has a ring-shaped rotating frame 4 supported so as to be rotatable, and a suspension beam 6 supported so as to be movable in the radial direction of the shield body 2 along a guide rod 5 attached to the rotating frame 4. The combination of the rotation of the rotating frame 4 and the movement of the suspension beam 6 enables the assembly of the segment at an arbitrary position on the shield main body 2.

In order to drive the rotating or radially moving erector 1, electric power and control signals to a hydraulic pump for operating each jack inside the rotating frame 4 are supplied from a rear bogie or the like. It is necessary to connect cables 7 such as hoses for sending hydraulic oil, cooling water, and the like. A winding reel 8 having a winding function is provided by a spring or the like on the fixed side within the swirl inner diameter of the erector 1. One end on the outer peripheral side of cables 7 such as a power cable, a hydraulic hose, and a control signal cable wound on a reel 8 is connected to the rotating frame 4 of the erector 1.
Is connected to the erector 1 so as not to be loosened along the guide roller 9 disposed on the fixed side inside, and the other end of the cables 7 is connected via a slip ring 10 provided on the rotating shaft of the take-up reel 8. To be connected to the rear bogie, etc.

[0006]

However, in the system in which the take-up reel 8 is installed within the swirl inner diameter of the erector 1 and the cables 7 are connected from the fixed side to the erector 1 on the rotating side as described above, the take-up reel is used. The reel 8 occupies a considerable space within the turning inner diameter, and requires a guide roller 9 for guiding the cables 7 along the rotating frame, so that the installation space for equipment necessary for excavation work and the passage of people are reduced. In particular, when a robot is used to automate the assembly of segments by the erector 1, the number of necessary cables 7 increases,
The number of take-up reels 8 installed on the fixed side inside the turning inner diameter must be increased, and the space inside the turning inner diameter of the rotating frame 4 is further reduced, making it difficult to secure the space necessary for excavation work. is there.

The present invention has been made in view of the above-mentioned problems in the prior art, and supports the cables without the space inside the turning inner diameter of the erector being narrowed by the winding reel for connecting the cables. An object of the present invention is to provide a cable connecting device for a shield machine erector that does not require a guide roller.

[0008]

SUMMARY OF THE INVENTION In order to solve the problems of the above prior art, the cable connecting device for a shield machine erector of the present invention is an erector that assembles segments by rotating within a shield body of the shield machine. In a cable connecting device for a shield machine erector that connects cables and supplies electric power, working fluid, etc., in order to connect a large number of cables, the space between the rotation of the erector and the shield body is substantially the same. Arrange multiple cable reels in a cross section, and attach one end to these cable reels.
Wrap the other end of the wound cables around the cables
Outside the rotating frame of the erector, which also serves as a rewind drum
It is characterized in that it is attached between a plurality of guide plates provided on the periphery and wound around each other, so that each cable can be stacked and wound and rewound according to the rotation of the erector.

[0009]

SUMMARY OF According to cables connecting apparatus for the shield machine erector, Ho cable reel for winding the cables in the space between the outer and the shield body of the rotary frame Elekta
It is installed in the same cross section, and the cables are guided by using a part of the outer circumference of the rotating frame of the erector, and multiple cables are stacked in multiple layers and wound or wound on the rotating frame. I try to put it back.

[0010] Thus, cables can be connected from the fixed side to the rotating side of the space outside the rotating frame of the elector without installing the take-up reel and the guide roller inside the rotating inner diameter of the elector. Can be used effectively.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 and FIG. 2 are a schematic configuration diagram and a cross-sectional view according to an embodiment of a cable connecting device for a shield machine erector of the present invention.

The cable connecting device 20 for the shield excavator erector is applied when the outer diameter of the rotary frame 4 of the erector 1 is relatively smaller than the shield diameter of the shield body 2.

In this case, the rotating frame 4 is arranged so that the erector 1 can rotate along the outer periphery of a cylindrical worktable 11 fixed and supported inside the tip of the shield machine.
As shown in FIG. 2, the rotary frame 4 is rotatable via a ring-shaped bearing 12 mounted on the outer periphery of the worktable 11, and a drive motor 14 mounted on a fixed side to a ring gear 13 mounted on the rotary frame 4. The pinion 15 is driven by meshing.

In a space between the rotary frame 4 and the shield main body 2, cables 7 such as a power cable, a hydraulic hose, and a control signal cable are wound. (Three in the illustrated example) cable reels 21, 22, 23 are arranged and fixedly installed.

The cable reels 21, 22, 2
The outer ends of the cables 7 wound around 3 pass through the rotary frame 4 and are connected to various parts of the erector 1.
The cables 7 between the cable reels 21, 22, and 23 are wound or unwound with the rotation of the elector 1 with the outer periphery of the rotary frame 4 as a winding drum.

The plurality of cables 7 are wound around the outer periphery of the rotating frame 4 as shown in FIGS. 1 and 2 by being wound around the same outer periphery of the rotating frame 4 or wound back. Thus, two guide plates 24 are attached to the rotating frame 4 at regular intervals, while the three cable reels 21, 22, and 23 are positioned in substantially the same cross section of the shield body 2. It is.

The cables 7 used in this embodiment have a rectangular or oblong cross section.
The height of the cables 7 in the case where the cables 7 are wound around the same position on the rotating frame 4 is prevented from increasing.

On the other hand, the ends of the cables 7 on the winding center side of the cable reels 21, 22, 23 are taken out via slip rings and connected to a rear bogie (not shown) to supply electric power, hydraulic oil and the like. I can do it.

In the cable connecting device 20 for the shield excavator erector configured as described above, the rotating frame 4 of the erector 1 rotates about 440 degrees with the assembly of the segment by the erector 1, but the erector Cables 7 of a length necessary for rotation of each cable reel 2
It is possible to supply power and operating oil such as electric power and hydraulic oil without trouble without pulling out of the rotary frame 4.

When the cables 7 are wound, the cables 7 are wound around the same portion between the guide plates 24 of the erector 1 so as to be wound. There is no need to particularly increase the axial length.

On the other hand, when the electric unit 1 is rotated in the reverse direction to rewind the cables 7, the cables 7 to be unwound are pulled back by the winding function of the cable reels 21, 22, 23. It is wound up, and even in this case, electric power and hydraulic oil can be supplied without any trouble.

As described above, the cable reels 21, 22,
23 is disposed outside the rotary frame 4 of the
Is used as the winding drum of the cables 7, so that there is no cable reel or guide roller within the swirl inner diameter of the erector 1, and it is possible to secure a sufficient installation space for devices necessary for the excavation work of the shield excavator. it can.

Further, since the cables 7 fed from the cable reels 21, 22, 23 are wound around the same portion of the rotary frame 4 in an overlapping manner, it is not necessary to increase the axial length of the rotary frame 4. Since the length of the shield machine does not increase, it is possible to easily cope with a curved tunnel excavation despite an increase in the number of cables.

In the above embodiment, the case where three cables are used is shown. However, the present invention can be similarly applied to a case where the number of cables is increased. A plurality of sets may be provided in the front-rear direction so as to be compatible, and the cable may be wound on a narrow-width drum as a conventional circular cross-section.

The shield machine to which the present invention can be applied is not limited to the case where there is a large space between the shield body and the outside of the erector as in the above-described embodiment, but also the case where there is a space where a cable reel can be installed. It can be widely applied.

Further, the present invention is not limited to the above embodiments, and each component may be changed without changing the gist of the present invention.

[0027]

As described above in detail with the embodiment, according to the cable connecting device for a shield machine erector of the present invention, the cable reel for winding the cables is connected to the outside of the rotating frame of the erector. It is installed in the same cross section of the space with the shield body and the cables are guided by using a part of the outer circumference of the rotating frame of the erector, and multiple cables are layered and rotated The cable is wound from the fixed side of the space outside the rotating frame of the Electa to the rotating side without installing the take-up reel and the guide roller inside the turning inner diameter of the Electa because it is wound around the frame and unwound. It can be connected, and the inside of the turning inner diameter can be used effectively.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of a cable connecting device for a shield machine erector of the present invention.

FIG. 2 is a cross-sectional view of another embodiment of the cable connecting device for a shield machine erector of the present invention.

FIG. 3 is a schematic configuration diagram of a conventional cable connection device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electa 2 Shield body 4 Rotating frame 5 Guide rod 6 Hanging beam 7 Cables 11 Work table 12 Bearing 13 Ring gear 14 Drive motor 15 Pinion 20 Cable connection device 21, 22, 23 Cable reel 24 Guide plate

Claims (1)

(57) [Scope of request for utility model registration] 1. A cable connecting device for a shield machine erector that connects cables to an erector that assembles segments by rotating within a shield body of the shield machine and supplies electric power, working fluid, and the like. A plurality of cable reels are arranged in substantially the same cross section of the space between the rotary frame of the erector and the shield body to connect the cable reels, and one end is wound around these cable reels.
Connect the other end of the cable to the cable
A ram provided on the outer periphery of the rotary frame of the
A cable connecting device for a shield excavator elector, wherein the cable extruder is mounted between guide plates wound up several times and each of the cables is overlapped and rewindable according to the rotation of the elector.