JPH03296000A - Segment erector - Google Patents

Abstract

PURPOSE:To control the posture of a segment in 6 directions by providing a turning ring in a shield main body with members for lifting, turning and supporting respectively, and attaching an oscillating and a segment holding member to a yawing member provided on the supporting member. CONSTITUTION:A segment 7 is carried below a segment erector 6, and a lifting jack 14 lowers a lifting member 13 for holding it by a segment holding member 24, and then raises the segment 7 to a fixed height. A turning ring 9 turns the segment 7 to move it to a position adjacent to the existing segments. After the rough aligning of the above segment in the direction of turning, a fine turning jack 16 moves a turning member 15 right and left for the fine turning adjustment of the segment. The vertical adjustment of the segment is executed by the lifting jack 14, and its longitudinal adjustment is executed by a sliding jack 19. Thus the segment can be accurately aligned in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a segment erector for assembling segments for lining the inner wall of a tunnel excavated by a shield excavator.

(Prior Art) Conventional shield excavators for excavating tunnels are known, for example, as described in Japanese Patent Laid-Open No. 60-261897 and Japanese Patent Laid-Open No. 1263392.

The above-mentioned shield excavator has a segment erector attached to the rear of the shield body, and the shield body lines the inner wall of the tunnel by positioning the segment along the inner wall of the tunnel. ing.

Furthermore, when connecting the next segment to an already assembled segment, it is necessary to control the orientation of the segment.

For this reason, conventional segment erectors are
As in Publication No. 61897, the end balancer that holds the segment is rotatably supported via a ball joint on the base balancer that is rotatably provided in the shield body, so that the posture of the segment can be controlled. In some cases, as in JP-A-1-263392, a rotating ring is further provided on a plurality of intermediate rings supported within the shield body, and this rotating ring is provided with a holding means for holding the segments. Proposed.

(Problem to be solved by the invention) However, in the former case where the end balancer is rotatably supported via a ball joint, the degrees of freedom affect each other, so when attempting to automate the assembly, the control becomes difficult. It has drawbacks such as complexity and errors.

In addition, the latter arrangement in which a plurality of intermediate rings are further provided with a swivel ring has a disadvantage in that the structure becomes large-scale, and it is difficult to perform fine control necessary for positioning the segments.

This invention was made for the purpose of solving the above-mentioned drawbacks.
The present invention aims to provide a segment erector having degrees of freedom in six directions with a simple configuration.

(l! Means and operation for solving the problem) In order to achieve the above-mentioned object, the present invention provides a rotary ring in the shield main body that excavates underground, and a rotary ring that can be freely raised and lowered on the rotary ring. A rotating member is provided on the elevating member, a rotating member is provided on the elevating member so as to be freely pivotable in the rotating direction of the rotating ring, a supporting member is provided on the rotating member so as to be movable in the front-rear direction of the shield body, and the supporting member is pivotable in the horizontal direction. A freely movable yawing member is provided, and a swinging member and a segment holding member that are swingable in mutually orthogonal directions are attached to the yawing member.

As a result, the posture of the segment held by the segment holding member can be freely controlled in six directions, so alignment with the already assembled segments can be performed in a short time and with high precision.

Furthermore, by automatically controlling movement in each direction, assembly of segments can be easily automated.

(Example) An embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, 1 is a shield main body, which is propelled underground by a shield jack 2, and a canter head 4 rotated by a canter head motor 3 is provided at the front part.

A large number of cutters 4a are protruded from the front surface of the canter head 4, and the earth and sand excavated by these cutters 4a is taken into the reservoir 1a through an earth and sand intake port (not shown), and then removed by a screw conveyor or the like. It is designed to be carried out to the rear by the device 5.

Reference numeral 6 denotes a segment erector for assembling segments 7 along the inner wall of the tunnel excavated by the shield body 1, and a plurality of rollers 8 provided along the inner circumference of the shield body 1.
It has a swivel ring 9 which is rotatably supported by.

The rotating ring 9 is rotated by a rotating motor IO, and supports 9a are protruded from the rear surface of the rotating ring 9 at positions opposite to each other with the center interposed therebetween. An elevating member 13 is supported so as to be movable up and down.

The elevating member 13 is moved up and down by an elevating jack 14, and an arc-shaped elongated hole 13a is provided in the middle part of the elevating member 13 protruding from the front and rear surfaces, and the rotating member 15 is supported within these elongated holes 13a. A roller 16 is fitted therein so as to be removable.

A fine turning jack 16 is provided between this turning member 15 and the elevating member 13, and this fine turning jack 16
This allows the rotating member 15 to rotate slightly in the rotating direction of the rotating ring 9, and a support member 18 is supported by a pair of guide rods 7 provided on the rotating member 15.

The guide rods 17 are horizontally suspended in the front-rear direction of the shield body 1, and a support member 18 is slidably supported on these guide rods 17.

This support member 18 is moved back and forth along the re-guide rod 17 by a sliding jack 19.

On the other hand, a rotatable yawing member 21 is supported on the lower surface of the support member 18 by a yawing jack 20.
A swinging member 22 is swingably supported by the yawing member 21 via a pin 21a.

A rolling jack 23 is provided between the yawing member 21 and the swinging member 22, and the rolling jack 23 allows the swinging member 22 to swing freely around the pin 21a, and makes one swing. A segment holding member 24 is supported at both ends of the member 22 by pins 22a provided in a direction perpendicular to the pin 21a.

This segment holding member 24 can be rotated around a pin 22a by a pitching jack 25, and a gripping unit 24a for gripping the segment 7 to be assembled is provided on the lower surface of the segment holding member 24. .

Next, to explain the operation, the inner wall of the tunnel excavated by the shield body 1 propelled underground by the shield jack 2 is covered with segments 7 assembled by the segment erector 6 every time the shield body 1 is propelled one pitch. However, the assembly of segment 7 remains as follows.

When the segment 7 to be assembled is carried below the segment erector 6, the elevating member 1 is moved by the elevating jack 14.
3 is lowered, and the segment 7 is gripped by the gripping unit 24a of the segment holding member 24.

After that, when the segment 7 is raised to a predetermined height by the lifting jack 14, the swing ring 9 is turned by the swing motor 10, and the segment 7 that has already been assembled is
is moved to a position adjacent to .

Then, segment 7 is
The posture of the segment 7 is controlled, and alignment with the segment 7 that has already been assembled is performed.

That is, after the rough positioning in the direction of rotation is completed by turning the turning ring 9, the turning member 1 is moved by the fine turning jack 16.
5 in the Y direction to make fine turning adjustments.

In addition, the vertical direction Z can be adjusted using the lifting jack 14.
The adjustment is performed by moving the support member 18 back and forth using the sliding jack 19.

On the other hand, rolling MX, pitching Mv, and yawing M2, which are rotated about these three axes X, Y, and Z in addition to the movement in the three axes X, Y, and Z directions, are performed by the rolling jack 23. This is possible with a pitching jack 25 and a yawing jack 20.

That is, rolling M causes the swing member 22 to swing around the pin 21a using the rolling jack 23, pitching Mv causes the segment holding member 24 to swing around the pin 22a using the pitching jack 25, and yawing M2 moves the swing member 22 around the pin 22a using the pitching jack 25. This can be done by rotating the yawing member 21 with the yawing jack 20.

Moreover, since each of the above operations is possible by automatically controlling each jack, assembly of the segments 7 can also be automated by combining the segment erector 6 with a control device.

(Effects of the Invention) As described in detail above, this invention makes it possible to control the posture of the segments held by the segment holding member in six directions, so alignment with already assembled segments can be performed in a short time and with high precision. It becomes like this.

This makes it possible to efficiently line the tunnel surface excavated by the shield body, and by automatically controlling movement in each direction, assembly of segments can be easily automated.

Furthermore, since the driving parts in each direction can be concentrated in one place, the entire structure can be made compact, which further improves the versatility, as it can be applied to small and medium-sized shield tunneling machines.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a sectional view of a shield tunneling machine, and FIG. 2 being a perspective view of a segment erector.
FIG. 3 is an enlarged perspective view of the main parts, and FIG. 4 is an explanatory diagram of the operation. 1...Shield body, 9...Swivel ring. 13... Lifting member, 15... Rotating member. 1st... Supporting member 22... Swinging member 21... Yawing member 24... Segment holding member.

Claims (1)

[Claims] A swivel ring 9 is provided in the shield main body 1 that excavates underground, and an elevating member 13 is provided on the swivel ring 9 so as to be movable up and down, and the elevating member 13 is provided with a swiveling member 13 that can be freely swiveled in the direction of rotation of the swivel ring 9. A member 15 is provided, and this pivot member 15
The support member 18 is movable in the front-rear direction of the shield body 1.
In addition, a yawing member 21 that is rotatable in the horizontal direction is provided on the support member 18, and this yawing member 2
1, a swinging member 22 and a segment holding member 24, which are swingable in mutually orthogonal directions, are attached to the segment erector.