JPH0679900U - Segment carriage for shield method - Google Patents

Abstract

(57) [Abstract] [Purpose] The lower part of the tunnel is divided by a trolley that can be fixed, and the segment that moves forward and backward in the tunnel space under the trolley conveys the segment to the erector. [Structure] An outer carriage 11 provided with wheels 15 moving along a tunnel wall on both sides of the frame, and an inner carriage 18 attached to the lower side of the outer carriage 11 so as to be movable back and forth using the frame as a guide.
And a fork 2 suspended in the center of the lower side of the inner carriage 18 so as to be able to move back and forth, and provided with a receiving plate 30 of the segment 13 at the tip.
It consists of 2. The inner carriage 18 is provided with a drive device and a transmission mechanism for the inner carriage and the forks 22. A locking member 31 for loading the carriage is provided at the tip of the fork.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a segment carriage for a shield construction method that enables transportation of a segment to a shield tail in an earth pressure system shield or the like.

[0002]

[Prior art]

 In the earth pressure system shield, as shown in FIG. 8, the screw conveyor 2 for discharging the excavated sand is diagonally located in the center of the tail of the shield machine 1, and the segment 4 is assembled with the erector 3 rotating around the screw conveyor 2. However, it is often difficult to insert the traveling beam 6 of the Telha hoist 5 to the shield tail because the turning inner space of the erector 3 is restricted by the screw conveyor 2.

This problem can be solved to some extent by shifting the screw conveyor 2 slightly laterally when the segment inner diameter is large, but the inner diameter is small and the effective inner space of the erector 3 is small. In such a case, there is no such space, so after all, a transfer method using a roller conveyor is adopted, which is not so preferable for tunnel work.

As shown in the figure, the transportation method using this well-known roller conveyor is such that a roller conveyor 7 is installed side by side on a segment 4 which becomes a tunnel wall, and a segment 4 suspended by a telha hoist 5 thereon. Then, push down manually and pull it to the tail with a motor hoist or the like, and assemble the segment 4 with the erector 3.

[0005]

[Problems to be solved by the device]

 The problem in this case is that the transfer work is a manual work in a narrow space, so it is expected that the hands and feet will be caught, and the back surface and corners of the segment will be chipped, which is likely to cause inconvenience in terms of quality control. In the tunnel for drainage and sewage excavated in the tunnel, there is generally a slope, and the segment 4 placed on the roller conveyor 7 is easily moved due to the slope. For example, a disaster is predicted and there is a problem with safety.

The present invention has been conceived as a segment transfer device for solving the above-described problems in segment transfer and for a steep 20% working part, and its purpose is to be able to fix the inside of the lower part of the tunnel. A shield construction method with a new configuration that allows the segment to be smoothly transported to the erector of the shield tail without using the rotational force of rollers etc. by the member that is divided by the truck and moves forward and backward in the tunnel space under the truck. It is to provide a segment carriage for use.

[0007]

[Means for Solving the Problems]

 The features of the present invention for the above-mentioned purpose are that the outer trolley is provided with wheels that move along the tunnel wall by the segments on both sides of the frame, and the braking device for fixing is provided at the required location, and the segments are provided at the front and rear sides of the frame. An outer trolley with a required width equipped with wheels that move along the tunnel wall, an inner trolley attached to the lower side of the outer trolley with the frame as a guide, and an inner trolley to the lower center of the inner trolley. It consists of a fork of a required length that is suspended and has a segment receiving plate at its tip. The inner bogie is provided with the inner bogie, a fork drive device, and a transmission mechanism. There is provided a locking member for insertion.

[0008]

[Work]

 In the above configuration, the outer bogie defines a space below the tunnel where the inner bogie and the fork are located, and the inner bogie moves forward and backward in the frame of the outer bogie, and the fork moves forward and backward below the inner bogie. Allows the segment supplied from the loading slot of the outer trolley to the receiving plate at the tip of the fork to be transported to the erector of the shield tail, and the locking member at the fork tip is locked to the assembled segment to take a reaction force. As a result, the outer carriage can be called in near the erector to change the position.

[0009]

【Example】

 In FIG. 1 to FIG. 7, reference numeral 11 denotes an outer trolley constituted by a frame 12 formed by assembling shaped steel members in a rectangular shape. Wheels 15, which move along the tunnel wall 14 formed by the existing segments 13a, on both front and rear sides of the frame 12, 15 is provided, and an inlet 17 for the segment 13 is provided in the rear portion of the upper surface, except that the stretched metal 16 is partially stretched.

Reference numeral 18 denotes an inner carriage that is attached to the lower side of the outer carriage 11 so as to be able to move forward and backward using the frames 12 and 12 as a guide, and has a horizontally long quadrilateral frame 19 that moves forward and backward in the plane of the outer carriage 11 and its lower side. And a box body 20 attached to the inside of the box body. In the box body 20, there are two brake geared motors, one is a traveling motor 21 for the inner carriage 18 and the other is a fork 22 to be described later. It is equipped as a motor 23 (see FIG. 5).

Wheels 24 and 24 loosely fitted inside the frames 12 and 12 are provided on both sides of the inner carriage 18, and a transmission shaft 25 is laterally supported in the frame. One of the wheels 24 and a pinion 26 are attached to both ends of the transmission shaft 25, and the pinion 26 meshes with a longitudinal rack 27 provided in a side frame of the outer carriage 11.

The transmission shaft 25 is connected to the drive shaft of the traveling motor 21 by a gear and a chain 27, and transmits forward rotation or reverse rotation of the traveling motor 21 to the pinion 26. As a result, the pinion 26 rotates on the rack 27 and moves the inner carriage 18 forward or backward.

The fork 22 is made of square steel and has a pair of dovetail-shaped guide rails 28 and a rack 29 on the upper surface in the longitudinal direction. Further, a receiving plate 30 of the segment 13 provided with casters on the lower side of the curved plate is provided at the tip end thereof, and a locking member 31 for invoking a carriage is axially movably mounted at the tip of the receiving plate. There is.

The fork 22 is fitted to a dovetail hanging member 32 fixed to the lower side surface of the box body 20 with a guide rail 28, and is forcibly suspended under the inner carriage 18 so as to be retractable. The rack 29 and the pinion 33 provided in the box are engaged with each other so that they can move back and forth. The pinion 33 is connected to the drive shaft of the traveling motor 23 via a gear 34, and the traveling motor 23 rotates on the rack to move the fork 22 forward or backward.

Reference numeral 35 denotes a brake device provided on the rear wheel 15, and as shown in FIG. 7, a screw shaft 37 having two screw portions having different screw directions, which is provided on the wheel by being horizontally mounted on a bearing 36. It is composed of a pair of brake members 38 screwed to the threaded portions and arranged on both sides of the wheel 15, and an operation handle 39 attached to the inner end of the screw shaft.

Reference numeral 40 denotes a screw conveyor, 41 denotes a primary earth and sand pressure pump, and 42 denotes an electr.

FIG. 6 shows a step of transporting the segment 13 by the segment carriage. First, the outer carriage 11 is horizontally inserted until its tip is positioned below the primary earth and sand pump 41, and then the rear wheel 15 is tightened by the brake device 34 so as not to move naturally. To do.

In this state, the inner carriage 18 is moved to the rear end portion of the outer carriage 11, and the forks 22 are also moved backward so that the receiving plate 30 is positioned below the insertion port 17 of the outer carriage 11. . Then, the segment 13 conveyed by a hoist (not shown) is placed on the receiving plate 30 at the tip of the fork from the input port 17.

Next, the inner carriage 18 is moved into the front portion of the outer carriage 11, the fork 22 is further moved forward, and the receiving plate 30 is used to send the segment 13 to the tail erector 42. The segment 13 is transferred to the erector 42 and assembled as the tunnel wall 14.

After transferring the segment 13 to the erector 42, the fork 22 is returned to the rear part of the outer dolly 11 together with the inner dolly 18, and after the segment 13 can be supplied again, the fork 22 moves forward in the same manner as described above. The segment 13 is conveyed to the erector 42.

When the transport of the required number of segments 13 is completed by repeating the same steps and a section of the tunnel wall 14 is assembled therein, the process proceeds to shield excavation. Since the segment carriage is set apart from the tail by this excavation, the position of the segment carriage is corrected after the shield excavation is completed.

After the completion of the excavation of the shield, the locking member 31 for loading the carriage is tilted forward and hooked on the edge of the assembled segment 13 to take a reaction force. Further, the brake device 34 of the outer carriage 11 is released to bring the outer carriage 11 into a free state. Then, when the traveling motor 23 of the fork 22 is rotationally driven in the direction in which the fork 22 moves backward, the outer carriage side moves forward, and the tip of the outer truck side is positioned near the lower side of the primary earth and sand pump 41. Will be called in until.

When the outer carriage 11 is stopped, the brake device 34 is operated again to fix the outer carriage 11 and release the locking member 31 to set the fork 22 in a free state. After that, when the two traveling motors 21 and 23 are driven to move the inner carriage 18 and the fork 22 backward, the receiving plate 30 is positioned below the charging port 17 to supply the next segment 13. I will receive it.

In the transportation of the above segment, when constructing a portion where the tunnel slope is steep, the work can be safely performed by supporting the outer carriage 11 with a restraining wire.

[0025]

As described above, according to the present invention, the required outer bogie having the wheels on both sides of the frame, the inner bogie attached to the lower side of the outer bogie so as to move forward and backward, and the forward and backward movement to the lower center of the inner bogie. A segment carriage is composed of a fork of a required length that is freely suspended and has a segment receiving plate at the tip, and the inner carriage and the forks are moved forward and backward by a drive unit inside the inner carriage to be supplied. Since the segment can be transported to the shield tail erector, it is possible to reliably transport the segment without manual work, and the limbs of workers who have so far been limited to work in a narrow space. Not only will you be prevented from being caught in an accident, but you can solve the problem of lacking segments, and you can handle the distribution of tunnels, so you can work safely.

Further, since the inner carriage and the fork are movably provided under the outer carriage and the tunnel space under the outer carriage is used for transferring the segment, the segment space is extremely narrowed by the segment carriage. In addition, the structure is simple and it can be transported simply by reciprocating the inner bogie and the fork, so no special operation is required, and the outer bogie is called in by the locking material at the tip for shield excavation. In addition, the segment carriage can be easily repositioned.

[Brief description of drawings]

FIG. 1 is a side view of a segment carriage for a shield construction method according to the present invention in use.

FIG. 2 is a front view of the above.

FIG. 3 is a plan view of a segment carriage.

FIG. 4 is a plan view of a driving portion.

FIG. 5 is a vertical sectional front view of the same.

FIG. 6 is an explanatory diagram sequentially showing a segment carrying process.

FIG. 7 is a vertical sectional view of a brake device.

FIG. 8 is an explanatory diagram of a conventional segment conveying means.

[Explanation of symbols]

 11 Outer bogie 12 Frame 13 Segment 13a Existing segment 14 Tunnel wall 15 Wheel 17 Inlet 18 Inner bogie 21 Inner bogie drive motor 22 Fork 23 Fork traveling motor 26 Inner bogie pinion 27 Inner bogie drive Rack 29 Rack for fork travel 30 Receiving plate 31 Locking member for calling in an outer cart 33 Pinion for fork travel 34 Brake device

Claims (1)

[Scope of utility model registration request] 1. A required outer trolley provided with wheels moving along a tunnel wall by segments on both sides of the frame, and provided with a braking device for fixing at a required position, and a frame under the outer trolley as a guide to advance and retreat. It consists of an inner carriage that is freely attached, and a fork of a required length that is suspended in the center of the lower side of the inner carriage so that it can move back and forth, and has a segment receiving plate at the tip end. A segment carriage for a shield construction method, characterized in that a fork drive device and a transmission mechanism are provided, and a locking member for loading a carriage is provided at a tip of the fork.