JP3219680B2 - Electa device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an erector device mounted on a rear portion of a main body of a tunnel excavator for mounting a segment on an inner wall surface of an existing tunnel.

[0002]

2. Description of the Related Art FIG. 4 is a schematic sectional view of a general shield excavator, FIG. 5 is a side view of a conventional erector apparatus mounted on the shield digger, and FIG. 6 is a front view of the conventional erector apparatus. .

As shown in FIG. 4, in a conventional shield excavator, a cutter head 102 is rotatably mounted at the front of a cylindrical skin plate 101 as an excavator body. The spoke 103 radially attached to the
04 is fixed. A ring gear 105 is fixed to the rear portion of the cutter head 102, while a hydraulic motor 106 is attached to the skin plate 101, and a driving gear 107 of the hydraulic motor 106 is connected to the ring gear 1.
05 is engaged. Therefore, when the hydraulic motor 106 is driven to rotate the drive gear 107, the ring gear 1
The cutter head 102 can be rotated through 05.

[0004] A bulkhead 108 is mounted on the skin plate 101 behind the cutter head 102, and a chamber chamber 109 is formed between the cutter head 102 and the bulkhead 108. One end of the chamber chamber 109 is open at the other end of the sludge pipe 110 and the sludge pipe 111 extending outside the shield excavator. An agitator 112 for stirring and mixing earth and sand and muddy water is provided. The cutter head 102 is provided with a man lock 113 for going out of the machine.

[0005] Further, a plurality of shield jacks 114 are arranged in the circumferential direction around the rear outside of the skin plate 101, and the shield jacks 114 extend rearward in the tunneling direction of the shield excavator and excavate in a tunnel. By pressing against the existing segment S constructed on the peripheral surface, the skin plate 101, that is, the entire shield excavator can be advanced by the reaction force. On the other hand, a segment elector 115 is attached to the rear center of the skin plate 101, and the segment elector 115 is moved forward by the shield jack 114.
A tunnel can be constructed by mounting a new segment S in a space between the existing segment S and the existing segment S.

[0006] In this segment elector 115,
As shown in FIGS. 5 and 6, the bracket 201 fixed to the rear part of the skin plate 101 is rotatable.
The two supporting rollers 202 are attached at equal intervals in the circumferential direction, and each of the supporting rollers 202
3 is rotatably supported, and the turning ring 203 is formed with internal teeth 204. In addition, skin plate 10
A hydraulic motor 205 is fixed to a rear portion of the motor 1 by a bracket (not shown). A drive gear 206 of the hydraulic motor 205 meshes with the internal teeth 204 of the turning ring 203. Therefore, when the hydraulic motor 205 is driven to rotate the drive gear 206, the turning ring 203 meshed with the drive gear 206 can rotate.

The support ring 2 is attached to the swing ring 203.
07 is fixed to the support ring 207, and a pair of left and right fixed bases 208 is fixed to the support ring 207. The left and right ends of the U-shaped movable frame 209 are moved to the fixed bases 208 by the guide rods 210, respectively. It is supported freely and can be moved up and down by a lifting jack 211 respectively. An elevating platform 212 is fixed to the center of the moving frame 209. The elevating platform 212 has a segment holder 2 that is movable in the longitudinal direction of the existing tunnel.
13 are attached. An assembling scaffold 214 is installed at the center of the existing tunnel. A hydraulic hose 215 whose base end is connected to a hydraulic control device (not shown) extends from the rear along the assembling scaffold 214 and has a distal end. Moves up and down the jack 21 through the hydraulic path in the support ring 207.
1 and other hydraulic equipment.

Accordingly, in order to excavate and form a tunnel, first, as shown in FIG. 4, the plurality of shield jacks 114 are extended while rotating the cutter head 102 by the hydraulic motor 106 and pressed against the existing segment S. By advancing the skin plate 101 by the reaction force, a large number of cutter bits 104 of the cutter head 102 excavate the ground in front. The earth and sand excavated by the cutter bit 104 is taken into the chamber chamber 109, supplied with water from the mud pipe 110, and agitated and mixed with the excavated earth and water by the agitator 112 and discharged to the outside by the mud pipe 111. . Next, one of the shield jacks 114 is operated in the contracting direction to form a space between the shield segment 114 and the existing segment S, and a new segment S is mounted in the space by the segment elector 115. That is, as shown in FIG. 5 and FIG. 6, the turning ring 203 is rotated by the hydraulic motor 205, and the lift 212 is moved by the lift jack 211. And the segment S is held by the segment holding unit 213.
Then, again, the segment holding portion 213 of the lifting platform 212
Moves along the inner wall surface of the tunnel along with the radial direction, and moves the segment S to a predetermined position.
Assemble. By repeating this operation, a tunnel of a predetermined length is excavated and formed.

[0009]

However, in the segment elector 115, as described above, the lift 21
2 can be moved along the radial direction of the existing tunnel by the lifting jack 211, and the lifting jack 211 is driven so that hydraulic oil is supplied and discharged from a hydraulic control device via a hydraulic hose 215 to extend and contract. Has become. In this case, the hydraulic hose 215 disposed along the assembly scaffold 214 has a distal end connected to the lifting jack 211 through a hydraulic path in the support ring 207, and
Since the support ring 207 rotates integrally with the swivel ring 203 with respect to 14, the hydraulic hose 215 is provided with a slack amount of a predetermined length.

Therefore, at the time of assembling the segment S, the lifting platform 212 (segment holding section 213) holding the segment S moves along the inner wall surface of the tunnel due to the rotation of the swivel ring 203.
5 moves together with the swivel ring 203. For this reason, the hydraulic hose 215 is swung in the existing tunnel, which hinders other work such as the work of loading the segment S. At this time, the hydraulic hose 21
5 repeats contact with peripheral members such as the assembly scaffold 214 and may be damaged.

SUMMARY OF THE INVENTION The present invention solves such a problem, and prevents a connection hose for transmitting a drive transmission force, such as a hydraulic hose, from being loosened to prevent the hose from being damaged and to secure the safety of a segment assembling operation. It is another object of the present invention to provide an erector device with improved workability.

[0012]

In order to achieve the above object, the present invention provides an erector device in which a swivel ring is rotatably supported by a plurality of support rollers at a rear portion of a cylindrical excavator body. It is rotatable by a drive motor, and a lifting platform is movably supported along the radial direction of the existing tunnel via the lifting mechanism on the slewing ring. In the erector apparatus, a holding mechanism to be mounted is mounted, and a connecting hose for transmitting a drive transmission force extended from the excavator body is connected to the lifting mechanism via the swivel ring. with left right pair of pulleys is mounted rotatably on open outwardly in an arc shape
Mouth and guide member is attached along the inner periphery of the revolving ring, the connecting hose extending from the excavator body is guided by the outer peripheral surface of the guide member, again it is wound around the pulley the connection with the outside circumferential surface of the guide member
It is characterized in that it is guided in the same manner as a hose, and is held in a tensioned state by its tip being connected to the turning ring.

Accordingly, when the segments are assembled by the elector device, the rotating ring is rotated by the drive motor and the lift is moved via the lift mechanism, so that the segment held by the holding mechanism of the lift can be moved to the existing tunnel. The segment moves in the circumferential direction and the radial direction, and the segment is attached to a predetermined existing inner wall surface of the tunnel. The connecting hose for transmitting the driving force to the elevating mechanism turns while being guided by the outer peripheral surface of the arc-shaped guide member. It is wrapped around the pulley of the ring, guided again by the outer peripheral surface of the guide member, the tip is connected to the turning ring and held in tension, and this connection hose is held without slack, and the turning ring rotates. However, the connecting hose is always held by the guide member and the pulley and does not loosen.

[0014]

Embodiments of the present invention will be described below.

The erector device of the present invention is mounted on the rear portion of the main body of a tunnel excavator and is for attaching a segment to an existing inner wall surface of a tunnel. That is, a plurality of support rollers are mounted on the inner peripheral surface of a rear portion of the cylindrical excavator body, and a rotating ring having internal teeth is rotatably supported by the plurality of support rollers. The drive gear of the drive motor mounted on the excavator body is engaged with the internal teeth of the turning ring. Therefore, the turning ring can be rotated by the drive motor. Also,
A lifting platform is movably supported on the swing ring via a hydraulic jack as a lifting mechanism along the radial direction of the existing tunnel. The lifting platform holds a segment and holds it to a predetermined inner wall surface of the existing tunnel. The member is mounted.
A connecting hose having one end connected to the hydraulic control device for supplying and discharging pressure oil as a drive transmission force is supported by the excavator body and extends to the swivel ring side. A pair of left and right pulleys are rotatably mounted on the swivel ring, and a guide rail as a guide member which is formed in an arc shape and opens outward is mounted along the inner peripheral portion of the swivel ring. The connecting hose extended from the guide rail is guided by the outer peripheral surface of this guide rail, is wrapped around a pulley, is again guided by the outer peripheral surface of the guide member, and the distal end thereof is connected to the lifting jack via a swivel ring and tensioned. Held in state.

Therefore, when the segment is assembled by the elector device, the segment held by the holding member of the elevator can be moved along the circumferential direction of the existing tunnel by rotating the swing ring by the drive motor. Also, by supplying and discharging pressure oil from the hydraulic control device to the lifting jack via the connecting hose, the lifting jack expands and contracts to move the lifting platform, and the segment held by the holding member of the lifting platform is moved to the existing tunnel. Then, the segment held by the holding member is assembled at a predetermined position on the inner wall surface of the existing tunnel. At this time, the connecting hose that supplies and discharges the pressure oil to the lifting jack moves while being guided by the arc-shaped guide rail while being hung on a pulley integrated with the turning ring, and this connecting hose is always held without slack. Is done.

The connecting hose for supplying and discharging the pressurized oil to and from the lifting jack is guided by the arc-shaped guide rail, wrapped around the pulley and held, and then connected to the swivel ring. Therefore, the connecting hose does not hinder the work and does not come into contact with peripheral members when the swivel ring rotates with the movement of the elevator.

[0018]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic view showing a holding state of a hydraulic hose in an erector device according to an embodiment of the present invention. FIG. 2 is a side view of the erector device in the embodiment, and FIG. 3 schematically shows a change in the holding state of the liquid crystal display.

The erector device of the present embodiment is mounted on the rear part of the excavator body of the shield excavator and is used for assembling the segments on the inner wall surface of the existing tunnel. That is, as shown in FIG. 1 and FIG. 2, the rear of the skin plate 11 as an excavator body is provided along the circumferential direction of the inner peripheral surface thereof.
Two brackets 12 are fixed at equal intervals, and a support roller 13 is rotatably attached to each bracket 12. The turning ring 14 is rotatably supported by the four support rollers 13, and the turning ring 14 has internal teeth 15 formed thereon. A hydraulic motor 16 is fixed to a rear portion of the skin plate 11 by a bracket (not shown), and a driving gear 17 of the hydraulic motor 16
Are engaged. Therefore, when the hydraulic motor 16 is driven to rotate the drive gear 17, the turning ring 14 with which the drive gear 17 meshes can be rotated.

A support ring 18 is fixed to the rear surface of the swivel ring 14, and a pair of right and left fixed bases 19 are fixed to both sides of the support ring 18, and a U-shaped movable frame 20 is provided. Left and right end portions are movably supported by guide rods 21 on the respective fixed bases 19, and are vertically movable by lifting jacks 22, respectively. An elevator 23 is fixed to the center of the movable frame 22. A segment holder 24 that is movable in the longitudinal direction of the existing tunnel is attached to the elevator 23.

On the other hand, a pair of right and left pulleys 25 and 26 are rotatably mounted on respective lower shafts 28 and 29 at the lower part of the front surface of the revolving ring 14 while being connected by a connecting bracket 27. A guide rail 30 is attached to the swivel ring 14 as a guide member that forms an arc along the inner periphery thereof. Then, two hydraulic hoses 31 as connection hoses for supplying pressure oil as a drive transmission force along the inner peripheral surface of the skin plate 11,
The hydraulic hoses 31 and 32 are guided by the guide rail 30 from above the swivel ring 14 and wrapped around the pulleys 25 and 26, and are again guided by the guide rail 30 and extend upward. The distal end is connected to the swivel ring 14 through the cutout 33 of the guide rail 30. The connecting hoses 31 and 32 have their base ends connected to a hydraulic control device (not shown), while their front ends pass through the hydraulic path in the support ring 18 from the above-described swivel ring 14 and hydraulic equipment such as the lifting jack 22. It is connected to the.

Therefore, when excavating and forming a tunnel, first, a plurality of shield jacks are extended while rotating a cutter head (not shown), and the skin plate 11 is advanced by a reaction force pressing against the existing segment S. The cutter head excavates the ground in front, and then operates one of the shield jacks in the contracting direction to form a space between the existing segment S and the empty space by the erector device of the present embodiment. Attach a new segment S in place. That is, as shown in FIG. 2, the hydraulic motor 16 is driven to rotate the swivel ring 14, thereby moving the elevator 23 along the circumferential direction of the existing tunnel, and from the hydraulic control device via the hydraulic hoses 31 and 32. The pressurized oil is supplied to and discharged from the lifting jack 22, and the lifting table 23 is moved along the radial direction of the existing tunnel. Then, the elevator 23 is made to face the segment S carried into the existing tunnel, and the segment holding unit 24 holds the segment S. In this state, similarly to the above, the segment S held by the segment holding portion 24 of the elevating platform 23 is moved along the circumferential direction and the radial direction of the existing tunnel to a predetermined position on the inner wall surface of the existing tunnel. Attach the segment S. By repeating this operation, a tunnel of a predetermined length is excavated and formed.

In the elector apparatus of this embodiment, the hydraulic hoses 31, 32 are normally held in tension by the pulleys 25, 26 and the guide rail 30, and the segments S
During the assembling work, the turning ring 1 is driven by the hydraulic motor 16.
4 rotates, as shown in FIG.
32 moves while being guided by guide rails 30 while being hung around pulleys 25 and 26 integral with the swivel ring 14, the hydraulic hoses 31 and 32 do not loosen.

In the embodiment described above, the hydraulic hoses 31, 32 attached to the inner peripheral surface of the skin plate 11 are hung around the guide rail 30 and the pulleys 25, 26 of the swivel ring 14 and held. By connecting to the ring 14, the outer peripheral side is fixed and the inner peripheral side is rotated, but may be reversed. That is, the hydraulic hose attached to the assembled scaffold installed in the center of the existing tunnel is hung around the guide rail and pulley of the swivel ring and held, and then connected to the swivel ring to fix the inner peripheral side. Alternatively, the outer peripheral side may be rotated. Further, the hydraulic hoses 31 and 32 have been described as the connection hoses for transmitting the drive transmission force, but the invention can also be applied to electric wiring for supplying electric power.

[0026]

As has been described in detail with reference to the embodiments, according to the present invention, the swivel ring is rotatably supported by the plurality of support rollers at the rear of the cylindrical excavator body. And a rotation mechanism that is rotatable by a drive motor, and that supports a lifting platform movably along a radial direction of the existing tunnel through the lifting mechanism on the slewing ring, holds the segment, and mounts the segment on a predetermined inner wall surface of the existing tunnel. And a pair of right and left pulleys are rotatably mounted on the swivel ring, and an arc-shaped outwardly open guide member is mounted along the inner peripheral portion of the swivel ring, and a drive transmission extending from the excavator body is provided. The connecting hose for transmitting the force is guided on the outer peripheral surface of this guide member and wrapped around a pulley,
Guided again by the outer peripheral surface of the guide member, the distal end of which is connected to the swing ring and held in a tensioned state, so that the connection hose is always held in a tensioned state without slack, and the swivel accompanying the movement of the lift table Even during rotation of the ring, this connecting hose moves while being hung on a pulley integrated with the turning ring while being guided by the guide member,
Do not loosen, connecting hoses will interfere with work,
There is no contact with peripheral members. As a result, it is possible to prevent damage to the hose and to improve the safety and workability of the segment assembling work.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a holding state of a hydraulic hose in an elector apparatus according to one embodiment of the present invention.

FIG. 2 is a side view of the elector apparatus according to the embodiment.

FIG. 3 is a schematic diagram illustrating a change in a holding state of a hydraulic hose accompanying rotation of a swing ring.

FIG. 4 is a schematic sectional view of a general shield excavator.

FIG. 5 is a side view of a conventional erector device mounted on a shield excavator.

FIG. 6 is a front view of a conventional erector device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Skin plate (excavator main body) 13 Support roller 14 Revolving ring 16 Hydraulic motor (drive motor) 22 Elevating jack (elevating mechanism) 24 Holding member (holding mechanism) 25, 26 Pulley 30 Guide rail (guide member) 31, 32 Hydraulic Hose (connecting hose)

Continued on the front page (72) Inventor Ken Murakami 1-1-1, Wadazakicho, Hyogo-ku, Kobe-shi, Hyogo Inside Mitsubishi Heavy Industries, Ltd.Kobe Shipyard (72) Inventor Shinji Adachi 7-chome, Wadamiya-dori, Hyogo-ku, Hyogo No. 14 No. 14 in Seiryo Engineering Co., Ltd. (56) References Jirakusho Sho 57-71599 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 10/00-19/06

Claims (1)

(57) [Claims] 1. A swivel ring is rotatably supported by a plurality of support rollers at a rear portion of a cylindrical excavator main body, and is rotatable by a drive motor. Is supported movably along the radial direction of the existing tunnel, and a holding mechanism for holding the segment on the elevating platform and assembling it on a predetermined inner wall surface of the existing tunnel is mounted, and is extended from the excavator body. in erector device connection hose is connected to the lifting mechanism via the revolving ring for transmitting a driving transmission force, together with the left and right pair of pulleys rotatably mounted to the revolving ring, outside an arc shape Write open guide member is attached along the inner peripheral portion of the pivot ring, the connecting hose extending from the <br/> excavator body gas in the outer peripheral surface of the guide member Is de, the outside circumferential surface of <br/> again the guide member from being wound around the pulley is connected hoses as well as <br/> guide, that its tip is connected to the revolving ring An erector device characterized by being held in tension.