JPH09317376A - Direction changer of shield machine in shaft - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change the direction of a shield machine easily by a rotating plate and a plurality of jacks. SOLUTION: This changer 10 has a frame 12 for placing a shield machine and a rotating table 14 for changing the direction of the shield machine in a shaft. The frame 12 has a main body 16 and a plurality of rolling weels 18, which are installed to the main body and the directions of which can be changed, and a plurality of jacks 20 extended to lower sections. The rotating table 14 has a main body, a rotating plate being mounted on the main body and capable of being turned around an axis in the vertical direction, and a plurality of jacks set up onto the rotating plate or the base of the main body and extended in the vertical direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direction changing device used for changing the direction of a shield machine in a starting shaft or a reaching shaft.

[0002]

2. Description of the Related Art In shield work, a shield excavator that has reached a reaching shaft after finishing excavation is turned around in the reaching shaft, and then the shaft is used as a starting shaft to start again in another direction.

Conventionally, the direction of the shield machine is changed in the shaft by laying a plurality of iron plates on the bottom of the shaft and pulling and rotating the shield machine on the iron plates. .

[0004]

However, it takes a lot of time to lay out the iron plates, and a great deal of labor and time is required for the moving and rotating work performed by dragging the shield machine on the iron plates. Needed.

An object of the present invention is to facilitate the work of changing the direction of a shield machine in a shaft.

[0006]

SUMMARY OF THE INVENTION The present invention is an apparatus for changing the direction of a shield machine in a shaft, which includes a gantry and a turntable for mounting the shield machine. The gantry includes a main body, a plurality of rolling wheels mounted on the main body so as to be changeable in orientation, and a plurality of jacks mounted on the main body and extending downward. The turntable includes a main body, a rotary plate rotatably attached to the main body about a vertical axis, and a plurality of jacks attached to the rotary plate or the bottom surface of the main body and extending in the vertical direction.

[0007]

According to the present invention, the shield machine can be mounted on the main body of the gantry, and the main body of the gantry can be pulled or pushed to move in the vertical shaft through the rolling wheels. The movement is performed by elevating the main body by the extension operation of a plurality of jacks provided on the main body of the gantry, changing the direction of the rolling wheels during the ascent, and landing the gantry by the contracting operation of the jack. be able to.

Further, the rotary table is placed under the shield machine mounted on the main body of the frame, and a plurality of jacks of the rotary table are extended to thereby extend the jack or the rotary plate of the rotary table. Can be brought into contact with the shield machine and the shield machine can be lifted. Prior to this lifting, if the shield machine is temporarily fixed to the main body of the gantry, the gantry can be raised together with the shield machine. By pulling or pushing the lifted shield machine and the gantry, the shield machine and the gantry can be rotated around the vertical axis together with the rotary plate of the rotary table. By repeating the movement by the gantry and the rotational movement by the rotary table, it is possible to efficiently and easily change the direction of the shield machine. It is also easy to install the gantry and the turntable in the shaft, and the force required for the movement of the shield machine and the rotational movement on the turntable is relatively small.

[0009]

DETAILED DESCRIPTION OF THE INVENTION Referring to FIG. 1, there is shown generally at 10 a device for diverting a shield machine located within a shaft, such as a launch shaft or a reaching shaft, within the shaft. ing.

The turning device 10 includes a mount 12 and a turntable 14.

The base 12 includes a main body 16, a plurality of rolling wheels 18 attached to the main body 16, and a plurality of jacks 20.
Consists of

The main body 16 includes a plurality of (six in the illustrated example) lateral members 22 arranged in parallel with each other and a plurality of lateral members 2.
2 which are spaced apart from one another on these two transverse members 2
2 and a pair of vertical members 24 orthogonal to each other, each vertical member 24
Is fixed to each lateral member 22. The illustrated horizontal member 22 and vertical member 24 are each made of H-section steel. The H
In addition to the shaped steel, for example, a rectangular steel pipe having a rectangular cross-sectional shape can be used.

The rolling wheels 18 and the jack 20 are attached to the lower surface (lower flange of H-shaped steel) of each end of the lateral member 22. More specifically, 5 excluding one cross member 22
Every other lateral member 22 is attached. Therefore, the pair of rolling wheels 18 are attached to both ends of the one horizontal member 22, and the pair of jacks 20 are attached to both ends of the adjacent horizontal member 22.

As shown in FIGS. 2 to 4, the rolling wheels 18 are
It comprises a plurality of rollers 26 spaced apart from each other in the longitudinal direction of the transverse member 22 and a housing 28 for rotatably supporting each roller 26 about an axis parallel to the longitudinal member 24. When a pulling or pushing external force is applied to the main body 16, the rollers 26 roll and linearly move in the longitudinal direction of the horizontal member 22 at the bottom of the shaft.

Each rolling wheel 18 is removably attached to the lower flange of the transverse member 22 via a plurality of bolt and nut assemblies 30. A plurality of bolt holes for the bolt / nut assembly are provided in the lower flange at each end of the lateral member 22, and each rolling wheel is changed by changing the bolt hole for inserting the bolt / nut assembly. 1
8 direction, that is, the direction of the rotation axis of the roller 26 can be changed. Instead of the roller 26 of the rolling wheel 18, this may be a plurality of spheres.

The jack 20 is a hydraulically operated jack, one end of which is fixed to the lower flange of the lateral member 22 and extends downward. Instead of this example, the jack can be fixed at its side portion to the end surface of the lateral member 22. When each jack 20 is actuated and extended, the other end contacts the bottom of the shaft, thereby lifting the body 16 above the bottom of the shaft. At this time, each rolling wheel 1
Since 8 also rises, the direction of each rolling wheel 18 can be changed in the raised state. Each jack 20
The rolling motion of each wheel 18 can be brought into contact with the bottom of the pit again, and then the main body 16 can be moved linearly in different directions.

The gantry body 16 can support the shield machine 32 on the pair of vertical members 24. Each vertical member 24 may have a rail 34 made of an I-shaped steel extending in the longitudinal direction of the vertical member. Each rail 34
Is fixed to the inclined surface of the support member 36 fixed to the top surface of each vertical member 24 at one of the flanges.
Thereby, the other flange of the rail 34 is directed to the axis of the shield machine 32.

When the shield machine 32 reaches the reaching shaft and is further propelled in the reaching shaft, the shield machine 32 receives the shield body on both rails 34 and slides the shield body in the axial direction of the rails so that the shield machine It can be mounted on the body 16.

The shield machine 32 mounted on the main body 16 of the gantry has its direction (axial line of the shield main body) repeated by repeating the linear movement of the main body 16 in the reaching shaft and the rotational movement by the rotary base 14. Direction) can be converted. The direction change is completed. The lower shield machine 32 can propel the reaching shaft as a starting shaft again from here.

As shown in FIGS. 4 and 5, the rotary base 14 includes a main body 36, a rotary plate 38, and a plurality of rotary bases (in the example shown in FIG.
And a jack 40 such as a hydraulic jack.

The body 36 of the turntable has a recess 42 which opens upwards. The recess 42 is composed of a cylindrical surface and a circular bottom surface continuous with the cylindrical surface. The rotary plate 38 is made of a disc and is received in the recess 42. Rotating plate 38
Has a recess 44 that opens downward. Hollow 44
Is composed of a cylindrical surface and a circular bottom surface continuous with the cylindrical surface.

The cylindrical surface of the recess 42 of the main body 36 and the rotary plate 38
A large number of steel balls 46 are arranged between the bottom surface of the recess 42 of the main body 36 and the bottom surface of the recess 44 of the rotary plate 38. .

The distance between the cylindrical surface of the recess 42 of the main body 36 and the peripheral surface of the rotary plate 38 is approximately equal to the diameter of the steel ball 46, and the depth of the recess 44 of the rotary plate 38 is the steel ball 48. Smaller than the diameter of. Therefore, the rotary plate 38 does not come into contact with the main body 36 and can rotate around the axis of the recess 42 of the main body 36, that is, the vertical axis, and the steel balls 46 and 48 reduce friction generated during rotation. .

The plurality of jacks 40 on the turntable extend in the vertical direction.

The rotary table 14 is installed below the shield body of the shield machine 32 mounted on the frame 12. The installation position of the rotary table 14 is preferably below the vicinity of the center of gravity of the shield machine 32. If necessary, the jack 20 of the pedestal 12 can be operated to raise the main body 12 of the pedestal 12, thereby ensuring the space required for installing the rotary table 14.

The rotary table 14 installed below the shield body has its main body 36 installed at the bottom of the pit, and the jack 40 is opposed to the shield body. Therefore, when all the jacks 40 are extended, the tips of these jacks come into contact with the shield body, and the shield machine 32
Can be lifted. Lifted shield machine 32
Next, by applying an external force of pushing or pulling it to the rotary plate 38 of the rotary table and the jack 40,
It can be rotated about the axis of the rotating plate. The rotation angle can be set arbitrarily. In addition, preferably, the receiving member 52 is previously attached to the abutting portion of each jack 40.

The shield machine 32, which has been rotated and moved, contracts the jack 40 of the turntable 14 to
It can be mounted again on the gantry body 16. After that, the frame 12 on which the shield machine 32 is mounted can be further linearly moved.

By the way, since the shield machine 32 mounted on the gantry 12 is most stable when it is on both rails 34 of the gantry 16, it is rotationally moved while being mounted on both rails 34. It is desirable to let From this viewpoint, it is desirable to lift the pedestal 12 together with the shield machine 32. In order to lift both of these,
The shield machine 32 is fixed to the main body 16 of the gantry.
In this fixing, a plurality of steel materials 50 prepared in advance are arranged at intervals in the axial direction of the shield body of the shield machine 32, and both ends of these steel materials 50 are welded to each vertical member 24 and the shield body. It can be done by

The plurality of jacks 40 on the turntable are mounted on the rotary plate 3
8 instead of fixing to one end of each body 3
It may be fixed to the bottom surface of 6. In this case, the rotary plate 38
Contacts the shield body.

In the present invention, the installation of the gantry 12 and the turntable 14 in the vertical shaft can be performed easily and in a short time. Further, the shield machine 32 is received in the gantry 12, the operation of moving the gantry 12, and the shield machine 32 and the gantry 12 on which the shield machine 32 is mounted by the rotary table 14.
The rotational movement operation of can also be performed easily and efficiently. Therefore, the direction change in the shaft of the shield machine 32 can be completed easily and efficiently.

The shield machine 32, which has completed the direction change by operating the direction change device 10, can be propelled into the ground from above the gantry 12.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a gantry and a turntable of a turning device.

FIG. 2 is a schematic front view of a turning device.

FIG. 3 is a schematic side view of a turning device.

FIG. 4 is a partially enlarged front view of the turning device.

FIG. 5 is a plan view of a turntable.

[Explanation of symbols]

 10 direction changing device 12 mount 14 rotary base 16 main body of mount 18 rolling wheel 20,40 jack 36 main body of rotary base 38 rotary plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masataka Mori 2-10-5 Katamachi, Miyakojima-ku, Osaka City, Osaka Prefecture Kumagai Gumi Co., Ltd. Osaka Branch (72) Inventor Yasushi Kubota 2-chome, Katamachi, Miyakojima-ku, Osaka City, Osaka Prefecture No. 10-5 Kumagai Gumi Osaka Branch (72) Inventor Mashira Oishi 2-10-5 Katamachi, Miyakojima-ku, Osaka City, Osaka Prefecture Kumagai Gumi Osaka Branch

Claims (1)

[Claims] 1. A device for changing the direction of a shield machine in a vertical shaft, comprising a pedestal for mounting the shield machine and a rotary table, the gantry being a main body and attached to the main body. A plurality of rolling wheels that are capable of changing the orientation, and a plurality of jacks that are attached to the main body and extend downward, and the rotary table is the main body;
A direction changing device comprising: a rotary plate attached to the main body and rotatable about a vertical axis; and a plurality of jacks attached to the rotary plate or the bottom surface of the main body and extending in the vertical direction.