JPH08312300A - Following truck of shield excavator - Google Patents

Abstract

PURPOSE: To enable a following truck to be safely operated without being towed by a shield excavator main body by placing a towing truck and a brake truck at the front and rear of a following truck main body, respectively, the trucks each having a rail clamp. CONSTITUTION: A towing truck 2 and a brake truck 3 which are placed, respectively, in front of and behind a following truck main body 1 located behind a shield excavator main body, are provided with rail clamps 9, 9. When the shield excavator main body advances, a rail is clamped by the rail clamp 9 of the towing truck 2, and a towing jack 4 is operated to advance the following truck main body 1. Next, the rail is clamped by the rail clamp 9 of the brake truck 3, the rail clamp 9 of the towing truck 2 is released, and the towing jack 4 is operated to advance the towing truck 2. Therefore, the need for towing the towing truck by the shield excavator main body is eliminated, and the following truck can be operated safely even on gradients and curves.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trailing truck for a shield excavator.

[0002]

2. Description of the Related Art A trailing truck that travels along a rail on a segment assembled in a tunnel following a shield excavating machine body has been known, for example, as shown in FIG. Left and right extending to the rear 2
When the tow wire rope 03 of the book is connected by the turnbuckle 04 and the shield excavator main body 02 digs, the trailing carriage body 01 is pulled by the tow wire rope 03 and laid in the segment 05 behind the shield excavator main body 02. 9 to move forward with the shield excavator main body 02, or as shown in FIG. 9, attach the following truck moving jack 07 to the following truck body 01 via the rearrangement jack 08, and move the jack 07. Connecting part 0 in which the engaging part 09 attached to the tip of the
10, the moving jack 07 is then actuated in the contracting direction to move the trailing carriage body 01 forward.

[0003]

However, in the former rope system, there is a risk that the trailing trolley body will travel to the shield excavator body side when the tunnel construction site has a downward slope, and in the case of an upward slope, the trailing trolley body There is a risk that the wire rope will break due to the force behind it and the wire rope connecting the shield excavator body and the succeeding bogie body will be an obstacle, making it difficult to work inside the shield excavator body. Yes, and the latter trolley body of the type that grips the latter segment and moves forward can be handled with the steel segment with the connection part, but it can not be dealt with in the case of the concrete segment because there is no connection part. There is a risk that the succeeding trolley body may run out of control when carrying out the reassembling work.

The present invention was developed to address such problems, and it is an object of the present invention to prevent the runaway of the succeeding carriage body and to eliminate the resistance due to its own weight.

[0005]

The structure of the present invention for achieving the above-mentioned object is a tow truck and a brake truck, each of which is provided with a rail clamp device in front of and behind a trailing truck body located behind a shield excavator body. It is characterized by arranging and.

[0006]

According to the present invention, when the shield excavator main body moves forward, the trailing carriage main body grips the rail by the rail clamp device of the towing carriage in front of the trailing carriage main body and operates the towing jack to operate the trailing carriage. The main body is moved forward, and then the rail is clamped by the rail clamp device of the rear brake truck, the clamp device of the tow truck is released, the tow jack is operated, and the tow truck is moved forward.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Reference numeral 1 denotes a body of a trailing carriage, on which a towing carriage 2 and a brake carriage 3 are arranged in front and rear. The tow truck 2 is arranged at the front of the following truck body 1 by connecting one end of a towing jack 4 provided at the lower portion of the following truck body 1 and a towing rod 6 attached via a clevis hardware 5 with a connecting pin 7. Further, the brake carriage 3 is arranged at the rear portion of the succeeding carriage body 1 by connecting the front portion thereof to the succeeding carriage body 1 with the continuous pin 8.

[0008] And these tow truck 2 and brake truck 3
Each of the rail clamp devices 9 is provided with a rail clamp device 9, and the rail clamp device 9 includes a first clamp arm 13 that is mounted via a mounting pin 12 to a mounting plate 11 that is mounted on a clamp device mounting frame 10. The middle part is fixed to the clamp arm 13 via the fixing pin 14,
And an S-shaped second clamp arm 17 whose one end is connected to the clamp drive jack 15 via a connecting pin 16, and when the clamp device 9 is operated, the clamp drive jack 15 is contracted to produce a second clamp. Arm 17
Moves to the rail side with the fixing pin 14 as a fulcrum and cooperates with the first clamp arm 13 to clamp the rail 18.
When the clamp device 9 is released, the clamp driving jack 15 is extended so that the second clamp arm 1 is released.
7 moves to the rail release side with the fixed pin 14 as a fulcrum, and cooperates with the first clamp arm 13 to be released from the rail 18. In the figure, 19 is a wheel and 20 is an operation panel.

Next, the movement of the succeeding truck main body 1 will be described with reference to FIGS. 3 to 6. As shown in FIGS. 3 and 4, the rail clamp device 9 of the towing truck 2 holds the rail while the towing jack 4 is extended. While grasping and releasing the rail clamp device 9 of the brake carriage 3, the towing jack 4 is contracted at the same speed as the extension speed of the propulsion jack of the shield excavator, and as shown in FIGS. To the shield excavator body side. As shown in FIG. 6, when the towing jack 4 is at its minimum contraction, the propulsion jack of the shield excavator body is also fully extended, so the site work process starts segment assembly work. When the brake truck 3 is fixed to the rail 18 and the rail clamp device 9 of the tow truck 2 is released to extend the tow jack 4, the tow truck 2 advances to the shield excavator body side.

FIG. 7 shows the flow chart thereof, and when the automatic operation switch is turned "on", the start is defined as step 1
In step 2, the tow jack 4 extends, the rail clamp device 9 of the tow truck 2 is locked in step 2, the rail clamp device 9 of the brake truck 3 is released in step 3, the tow jack 4 is contracted in step 4, and The tow jack 4 is contracted to the maximum, and the segment assembly work is started in step 6. During the segment assembly work, the rail clamp device 9 of the tow truck 2 is released in step 7, the rail clamp device 9 of the brake truck 3 is locked in step 8, the tow jack 4 is extended in step 9, and the tow jack 4 in step 10. To the maximum extent, the tow truck 2 advances to the shield excavator body side and is in the start standby state.

[0011]

As described above, according to the present invention, since the trailing carriage body is provided with the tow truck and the brake truck, which are provided with the rail clamp device, at the front and rear, the rails of the tow truck and the brake truck are arranged. The trailing trolley body can be moved by gripping and releasing the rail by the clamp device, so that no wire rope is required between the shield digging machine body and the succeeding trolley body as in the conventional example described above, so work inside the shield digging machine body is possible. Can be operated efficiently and safely, and the following bogie main body can be safely operated regardless of the type of segment, and even if the construction topography of the tunnel is uphill, downhill, or curved to the left or right It has the effect that the trolley body can be operated safely.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

2A is a sectional view taken along arrow A in FIG. 1, and FIG. 2B is a sectional view taken along arrow B in FIG.

FIG. 3 is a side view at the time of starting.

FIG. 4 is a plan view at the start.

FIG. 5 is a plan view during movement.

FIG. 6 is a plan view at the end of movement.

FIG. 7 is a flow chart diagram.

FIG. 8 is a side view of a conventional example.

FIG. 9 is another side view of the conventional example.

[Explanation of symbols]

 1 Subsequent bogie body 2 Traction bogie 3 Brake bogie 9 Rail clamp device

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Junichi Aikawa 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Jun Naito 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Within the corporation

Claims (1)

[Claims] 1. A trailing truck for a shield excavator, comprising a towing truck and a brake truck, each of which has a rail clamp device, disposed in front of and behind a trailing truck body located behind the shield excavator body.