JPH061673Y2 - Positioning device for bolt fastening machine of automatic segment assembly equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a bolt fastening machine positioning device for a segment automatic assembly device, which is capable of automatically positioning a bolt fastening device provided in the segment automatic assembly device. It is about.

[Prior Art] When mounting and assembling a segment in a shield-drilled tunnel, the conventional segment is placed on a trolley and transported in the tunnel just after the tunnel digging machine. The tunnel excavator is transported into the rear cylindrical frame, lowered from the hoist in the rear cylindrical frame and placed in the rear cylindrical frame,
It is attached to the segment assembly device provided on the erector rotation frame installed in the rear cylindrical frame, and the segment is positioned at the required position in the circumferential direction by the rotation of the erector rotation frame, and is assembled in the tunnel by the segment assembly device. ing.

Then, in the above-mentioned work, a series of works such as the work of suspending the segment from the carriage to the hoist, the work of lowering the segment from the hoist into the rear cylindrical frame, the work of positioning the lowered segment and attaching the segment to the assembly device Is done by hand.

However, if the workers perform these operations, a large number of workers are required, and since the inside of the rear cylindrical frame of the tunnel excavator is narrow, the work is dangerous and the work efficiency is low. For this reason, recently, various studies have been conducted to automatically perform the above-described series of operations by a small number of workers, and as a part of this, it is considered to automatically perform segmental fastening by a bolt fastening machine. Therefore, in order to fasten the segments with the bolt fastening machine, it is necessary to position the bolt fastening machine according to the shape of the segment fastening surface.

[Problems to be solved by the invention] However, up to now, a device for automatically positioning the bolt fastening machine in accordance with the end face shape of the segment has not been put into practical use, and a series of work for assembling the segment It was a bottleneck in automation.

In view of the above-mentioned circumstances, the present invention automatically positions the bolt fastening machine in accordance with the end face shape of the segment to be fastened when automating the work from transportation by the hoist of the segment to assembly by the segment assembling device. The purpose is to be able to do it.

[Means for Solving the Problems] The present invention enables a segment supply trolley capable of mounting a segment supplied by appropriate means and reciprocating in the tunnel longitudinal direction to follow the end face of the segment in the tunnel longitudinal direction. The above-mentioned copying fitting is provided, and a bolt fastening machine positioning fitting for positioning the bolt fastening machine of the automatic segment assembly apparatus is attached to the copying fitting.

[Operation] When the trolley moves to the automatic segment assembly machine side, the bolt fastening machine positioning fitting pushes the bolt fastening machine to position the fastening machine at a predetermined position.

[Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 to 3 show an embodiment of the present invention, in which a supporting frame 4 is disposed at a required position in the tunnel 1 in which the segment 2 is assembled, through an outrigger jack 3, and the supporting frame 4 is mounted on the supporting frame 4. , The automatic segment feeder 5 is mounted.
That is, a rail mount 6 oriented in the longitudinal direction of the tunnel 1 is attached to the lower part of the support mount 4, and the rail mount 6 has a pushing jack 7 whose one end is connected to the rail mount 6.
A segment supply carriage 8 is mounted via wheels 9 so as to be movable in the longitudinal direction of the tunnel 1 along the rail mount 6.

A segment positioning jack 10 is arranged on the segment supply cart 8 in parallel with the pushing jack 7. The positioning jack 10 is mounted on the segment supply cart 8 as shown in an enlarged view in FIG. A flat plate-shaped segment positioning metal fitting 11 that engages with the upper protrusion 2a of the segment 2 and positions the segment 2 is connected.

A guide wheel 13 mounted on the segment supply cart 8 is provided with a guide wheel 13, and the guide wheel 13 has a clamp jack.
A clamp device mounting base 15 is provided which is movable by 14 in the longitudinal direction of the tunnel 1.

At the tip of the clamp device mounting base 15, the clamp device 16
Is provided. A clamp jack 18 is horizontally arranged in a mounting frame 17 of the clamp device 16 in a direction orthogonal to the longitudinal direction of the tunnel 1, and a support frame 19 mounted at the tip of the clamp jack 18 has a segment 2 of the segment 2. A clamp metal fitting 20 having an L-shaped plan is fixed to clamp the upper protrusion 2a from the left and right. A guide cylinder 21 is fixed to the mounting frame 17 in parallel with the clamp jack 18, and
A guide rod 22 having a distal end fixed to a support frame 19 is slidably fitted into 21 so that the clamp metal fitting 20 can be smoothly guided when the clamp metal fitting 20 moves.

Explaining the bolt fastening device positioning device, a copying metal fitting set jack 23 is arranged on the segment supply carriage 8 in parallel with the pushing jack 7 and the like, and a tip end of a mounting frame 24 connected to the tip of the copying metal fitting set jack 23 is provided. , A metal fitting 25 extending in the circumferential direction of the segment 2 is fixed, and as shown in an enlarged view in FIG. 2, a bracket 26 which is erected on the upper surface of the metal fitting 25 in the circumferential direction of the segment 2 at a required interval. A bolt fastening machine positioning metal fitting 27 for positioning the bolt fastening machine attached to the automatic segment assembly device 36 is fixed to this. A horizontal guide wheel 30 and a vertical guide wheel 31 adapted to roll along rail surfaces 28, 29 mounted on the segment supply cart 8 are pivotally attached to the mounting frame 24, and the guide wheel 31 is shown in FIG. A spring (not shown) can be pressed against the rail surface 29. The spring is
When the left and right copying metal fittings 25 come into contact with the tapered surface of the segment 2, the left and right protrusion amounts of the taper set jack 23 become uneven, but the lateral displacement of the mounting frame 24 that occurs at this time is absorbed. belongs to.

In FIG. 1, 32 is a hoist equipped with a clamp device 33 that can be opened and closed by suspending it through an engaging metal fitting 2b fixed to the center of the upper protrusion 2a of the segment 2, and 34 is a rear cylinder of the shield machine. A frame, 35 is an erector rotating frame arranged on the rear cylindrical frame 34, 36 is an automatic segment assembling device which is arranged at the rear of the erector rotating frame 35 and can be moved up and down by a telescopic jack 37, and 38 is an automatic segment assembling device. A stopper for positioning the segment 2 clamped to the 36, 39 is a slide plate for positioning the bolt fastening machine built in the automatic segment assembly device 36, 40 is a taper stopper installed on the rear cylindrical frame 34, 41 Is a taper stopper fixed to the front of the segment supply cart 8, and 42 is a power unit of the automatic segment supply device 5.

Next, the operation of the present invention will be described with reference to FIGS. 4 (a) to (f) and FIG.
The description will be made with reference to (A) to (D).

The segment 2 is clamped by the clamp device 33 of the hoist 32 via the engaging hardware 2b, and is conveyed to a position above the automatic segment feeder 5 standing by at a predetermined position behind the rear cylindrical frame 34 of the shield machine, and the segment of the hoist 32 is conveyed. It is lowered by the hoisting device and mounted on the segment supply cart 8 (see FIG. 4 (a)). At this time, the jacks 7, 10, 14, 18, 23 are held in a contracted state.

When the segment 2 is mounted on the segment supply cart 8, the clamping device 33 is opened and lifted, and the hoist 32 travels backward along the rail to convey the next segment 2. Further, the clamp jack 14 of the automatic segment feeder 5 is extended, and the clamp device 16 is moved to the segment automatic assembly device 36 side through the clamp device mounting base 15 until the clamp metal fitting 20 is located on the side of the upper protrusion 2a of the segment 2. At the same time, the segment positioning jack 10 is extended and the segment positioning metal fitting 11 is moved so that its tip approaches the upper protrusion 2a of the segment 2 (fourth).
See Fig. (B) and Fig. 5 (a).

Next, extend the clamp jack 18 and
Move the inner surface of the clamp jack 1 until it contacts the side surface of the upper protrusion 2a of the segment 2 (see Fig. 5 (b)).
4 is reduced and the clamp metal fitting 20 is retracted along the upper protrusion 2a. Therefore, the segment 2 is moved a little backward by the engaging portion of the clamp metal fitting 20 via the upper protrusion 2a,
When the rear end of the upper protrusion 2a comes into contact with the front end of the segment positioning fitting 11, the contraction of the clamp jack 14 is stopped (the fifth position).
(See Figure (c)). In this case, the segment positioning jack 1
The pushing force of 0 is set larger than the pulling force of the clamp jack 14, and the segment 2 is always retracted to a predetermined position and positioned by the positioning fitting 11.

When the clamp jack 14 is contracted, the copying metal fitting set jack 23 is extended to move the copying metal fitting 25 to the segment 2 side, and the copying metal fitting 25 is imitatively pressed to the taper portion of the rear end surface of the segment 2 (see FIG. See Fig. 5 (d).

With the above, positioning and clamping of the segment 2 are completed, so that the clamp jack 18 is reduced and the clamp fitting 20
Open and reduce the clamp jack 14 to
16 is retracted (see FIG. 4 (d)), and then the pushing jack 7 is extended to move the segment supply cart 8 toward the automatic segment assembly device 36 side until the segment 2 hits the stopper 38 of the automatic segment assembly device 36. (See Fig. 4 (e)). As a result, the taper stopper 41 of the segment supply truck 8 is changed to the taper stopper 40 on the rear cylindrical frame 34 side.
The segment supply cart 8 is supported by engaging with the bracket and the bolt fastener positioning metal fitting 27 is attached to the automatic segment assembly device 36.
Automatic segment assembly device by pushing the sliding plate 39 for positioning
The bolt fastening machine provided on 36 is automatically positioned, and the clamp device of the automatic segment assembly device 36 clamps the segment 2 (see FIG. 4 (e)).

When the clamp device of the automatic segment assembly device 36 clamps the segment 2, the pushing jack 7 is reduced to return the segment supply cart 8 to its original position, and the segment positioning jack 10 is reduced to move the segment positioning metal fitting 11 to its original position. Then, the copying metal fitting set jack 23 is reduced and the copying metal fitting 25 is returned to its original position (see FIG. 4 (f)).

In addition, in the embodiment of the present invention, the case where the end face in the tunnel longitudinal direction of the segment is tapered has been described, but it is applicable to a segment without a taper, and the mounting of the segment on the trolley is a means other than the hoist ( Needless to say, for example, a chute or the like) may be used, and other various changes may be made without departing from the scope of the present invention.

[Advantages of the Invention] According to the bolt fastening device positioning device of the automatic segment assembly device of the present invention, the bolt fastening device that fastens adjacent segments in the tunnel longitudinal direction is automatically positioned at a predetermined position according to the shape of the segment fastening surface. Can be positioned to
The excellent effect that automation of segment assembly can be put into practical use can be achieved.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of a bolt fastening device positioning device of an automatic segment assembly device of the present invention, FIG. 2 is a detailed view of the bolt fastening device positioning device shown in FIG. 1, and FIG.
Detailed views of the segment positioning metal fittings and the clamp device shown in FIGS. 4 (A) to (F) and FIGS. 5 (A) to (D) are first views.
It is explanatory drawing of operation | movement of the segment automatic supply apparatus of the figure. In the figure, 1 is a tunnel, 2 is a segment, 2a is an upper protrusion, 8
Is a segment supply trolley, 23 is a copy fitting set jack,
Reference numeral 25 is a copying metal fitting, and 27 is a bolt fastening machine positioning metal fitting.

Claims (1)

[Scope of utility model registration request] 1. A segment supply cart capable of mounting a segment supplied by appropriate means and capable of reciprocating in a tunnel longitudinal direction, is provided with a copying metal fitting adapted to follow an end face of the segment in the tunnel longitudinal direction, A bolt fastening machine positioning device for a segment automatic assembly apparatus, wherein a bolt fastening machine positioning fitting for positioning the bolt fastening machine of the automatic segment assembly apparatus is attached to the copying fitting.