JP3166963B2 - Tracking device for transport vehicles such as segments - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shield machine for excavating a face and assembling a segment at the same time, and more particularly to an apparatus for following a carrier such as a segment for transporting a segment.

[0002]

2. Description of the Related Art As shown in FIG.
A cutter b driven by a motor is provided at the front of a cylindrical shield frame a, and the cutter b is used to excavate a face, and the excavated earth and sand is taken into a cutter room separated from the inside of the pit by a partition wall. Excavated earth and sand is discharged into a pit via a screw conveyor or the like. A segment c is assembled on the inner surface of the excavated hole by the erector provided in the shield frame a to form a tunnel. The excavator body d presses the shield jack against the existing segment c, and excavates using the reaction force.

[0003] A hoist beam e extending rearward is connected to the machine body d. The hoist beam e is provided with a hoist g that hangs the segment c on the transport carriage f transported from the rear of the tunnel and supplies it to the erector. The carrier f carrying the segment c stops below the hook h of the hoist g. Then, in this state, the hook h of the hoist g is lowered, and the segment c is gripped and suspended.

[0004]

In recent years, in order to shorten the construction period, an excavator body d (so-called simultaneous excavation shield) for simultaneously excavating a face by a cutter b, that is, excavating and assembling a segment c by an erector. Is used.

In such a simultaneous excavation shield d, the excavator body d excavates during the assembly of the segment c.
Is stopped below the hook h, the hoist beam e and the hoist g move forward with the excavation of the excavator body d. Therefore, when the hook h of the hoist g is lowered, the segment on the carrier f The gripping position for c is shifted. In order to correct this shift, the operator must finely adjust the stop position of the transport vehicle f in accordance with the advance of the hoist g, which hinders the introduction of the automatic receiving system.

[0006] Although not shown, the excavator body d
Is connected to a temporary receiving vehicle having a temporary receiving fork for temporarily receiving the segment c on the transporting vehicle f. In this case, since the temporary receiving vehicle moves forward with the excavation of the excavator body d, if the transporting vehicle f is stopped, the temporary receiving fork of the temporary receiving vehicle and the segment on the transporting vehicle f are similarly excavated as described above. The position with respect to c is deviated, and temporary reception cannot be performed reliably.

SUMMARY OF THE INVENTION An object of the present invention, which has been made in view of the above circumstances, is to provide a segment in which the relative position between a hoist or temporary receiving fork which advances with the excavation of a body of an excavator and a segment on a carrier is fixed. And the like.

[0008]

According to a first aspect of the present invention, there is provided a hoist beam which is connected to the rear of an excavator main body and advances integrally with the excavator main body. A hoist for suspending a segment, etc., on a transport vehicle transported from the rear of the tunnel, and a transport vehicle, such as a segment of a shield machine, for simultaneously performing tunnel excavation and assembling of the segment by the machine. The following device, the rear portion of the hoist beam is supported behind the excavator body.
Time excavation moves forward with the hoist beam and
Connecting the positioning carriage for positioning the transporting carriage for strike, the carrier table vehicle with respect to the positioning carriage,
In order to move the excavator body in unison with the excavator body, a drive mode for moving and stopping the
Position where it is in contact with the tip of the
And sensor for detecting that the device has been separated from the rear
Controller that starts and stops the drive motor upon detection of
And it is configured to provide a follow-up means comprising a.

According to a second aspect of the present invention, a hoist beam connected to the rear of the excavator main body and advancing integrally with the excavator main body is provided on the hoist beam so as to be free to travel, and is conveyed from the rear of the tunnel. A hoist for suspending a segment or the like on the transporting trolley, and a follower for a transporting trolley such as a shield excavator segment that simultaneously performs tunnel excavation and assembly of the segment by the excavator main body; Backward, above the hoistby
Supports the rear of the vehicle and is integrated with the hoist beam by simultaneous excavation
With advances, concatenates the temporary supporting carriage having a provisional receiving fork for Kari受segments or the like on the conveyance carriage, the carrier table vehicle with respect to the temporary receiving carriage, with the excavation of the shield machine main body to advance integrally, the transport truck, transportable
Drive motor for moving and stopping the transport truck and the tip of the transport truck
Separated backward from the positioned position in contact with
The drive mode is determined by the sensor that
And a controller for operating and stopping the motor .

[0010]

According to the first aspect, when the excavator body excavates, the positioning cart and the hoist beam connected to the excavator body advance integrally. Then, following the advance of the positioning cart, the transport cart advances by the following means.
As a result, with the excavation of the shield machine main body, positioning base car,
The carriage and the hoist beam advance integrally, and the relative positions of the segments and the like on the carriage and the hoist of the hoist beam are fixed regardless of the excavation of the excavator body. Therefore, in the so-called simultaneous excavation shield , the segment on the transport trolley can be reliably held by the hoist of the hoist beam.

According to the second aspect of the present invention, when the excavator body excavates, the temporary receiving bogie connected to the excavator body advances integrally.
Then, following the advance of the temporary receiving vehicle, the transporting vehicle is advanced by the following means. As a result, with the excavation of the excavator body, the temporary receiving vehicle and the transport vehicle move forward integrally. Thus, the relative positions of the segments and the like on the transport vehicle and the temporary receiving forks of the temporary receiving vehicle are fixed regardless of the excavator body excavation. Thus, the so-called simultaneous excavation shield
Oite reliably can Kari受to Rukoto the segments on the conveyance carriage by the temporary receiving fork of the temporary cradle vehicle.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the first invention will be described with reference to FIGS.

As shown in the figure, the excavator main body 1 is provided with a cutter 3 for excavating a face on a front surface of a cylindrical shield frame 2. The excavated earth and sand excavated by the cutter 3 is taken into a cutter room separated from the inside of the pit by a partition in the shield frame 2 and discharged from the cutter room into the mine via a screw conveyor or the like.

The segments 4 are assembled on the inner surface of the excavated hole by the erector provided in the shield frame 2 to form a tunnel. The excavator body 1 has the existing segment 4
Press the shield jack against the, and dig using the reaction force.

The excavator body 1 employs a so-called simultaneous excavation shield for simultaneously excavating a face by the cutter 3 and assembling the segment 4 by an erector. That is, the shield jack provided in the excavator body 1
Have a jack stroke of at least two blocks of segment 4 or a normal stroke of 2
The segments 4 are arranged in series so that the assembly and excavation of the segments 4 can be performed simultaneously.

A hoist beam 5 is connected behind the excavator body 1 and is towed. The hoist beam 5 is provided with a hoist 6 for suspending the segments 4 and the like so as to run freely. Hoist 6
Has a hook 7 (gripping device) that is wound up and down via a wire, suspends the segment 4 and the like on the transporting carriage 8 transported from behind the tunnel, and delivers it to the erector.

The carriage 8 is provided with a rail 9
Segment 4 running on its own and placed on the tunnel entrance side
And extension rails to the back of the tunnel. Transport cart 8
2 and 3 are shown in FIGS. In this example, the carriage 8 is a two-car train. The rails 9 on which the transport carts 8 travel are laid on sleepers 10 that are laterally suspended in the mine.

The carriage 8 has a drive wheel 11 and a driven wheel 12. The drive wheels 11 are driven by a motor 13 driven by a battery via a gear 14 and a chain 15. A connecting rod 16 made of a rigid body instead of a rope or the like is used for a connecting portion between the front and rear transport carts 8a and 8b. This takes into account the buckling due to the pressing force from the rear vehicle 8b.

A mounting piece 17 for mounting the segment 4 and the like is provided on the upper surface of the transport carriage 8. The upper surface of the mounting piece 17 is formed obliquely in accordance with the radius of the segment 4. On the mounting piece 17 of each carrier 8, a segment 4 for one ring of a trench is mounted. In the illustrated example, one ring has six pieces, and a total of six segments 4 of three pieces are placed on each carrier 8.

The excavator Behind the main body 1, positioning carriage integrally before proceeding with the hoist beam 5 as shown in FIG. 1 1
8 are connected via a towing beam 19. The positioning cart 18 runs on a rail 20 laid separately from the transport cart 8, being pulled by the excavator body 1. The positioning trolley 18 is provided with a power source and a hydraulic power source for supplying power to the cutter 3 and the like of the excavator body 1, and also has an operator cab for operating the excavator body 1.

The positioning cart 18 has a frame 21
Consists of At the lower part of the front frame 22 of the frame-shaped frame 21, there is provided a positioning metal fitting 24 with which the bumper 23 of the carrier 8 comes into contact. Bumper 23
Is provided at the front end of the carrier 8 as shown in FIGS. A limit switch 25 which is turned on when the bumper 23 contacts the positioning metal fitting 24 and is turned off by a return spring when the bumper 23 separates from the positioning metal fitting 24 is provided on the rear surface of the bumper 23.

The limit switch 25 is connected to the controller 2
The motor 13 is connected to the drive motor 13 via the motor 6, and stops and operates according to the on / off state of the motor. That is, when the limit switch 25 is on, the controller 2
6 stops the motor 13 and the controller 26 operates the motor 13 when the limit switch 25 is off. For such control, an AC servomotor or a DC servomotor is used as the motor 13. The limit switch 25, the controller 26, and the motor 13 constitute a follower in the claims.

The following means is not limited to this configuration. For example, a proximity sensor using ultrasonic waves or the like may be used instead of the limit switch 25.

In FIGS. 2 and 3, reference numeral 27 denotes a headlamp; 28, a photoelectric sensor; 29, a laser sensor; and 30, a sonic sensor, which are provided to prevent personal injury to workers. .

The operation of this embodiment having the above configuration will be described.

When the excavator body 1 excavates, the positioning cart 18 and the hoist beam 5 connected thereto move forward integrally. Then, following the advance of the positioning cart 18, the transport cart 8 moves forward by the following means. As a result, as the excavator body 1 excavates, the positioning cart 1
8. The carriage 8 and the hoist beam 5 advance integrally. Therefore, once the hoist 6 of the hoist beam 5 is positioned above the carrier 8, the relative position between the segment 4 or the like on the carrier 8 and the hoist 6 of the hoist beam 5 is determined by the excavator body 1. It is fixed regardless of the excavation.

Thus, in a so-called simultaneous excavation shield for simultaneously excavating and assembling the segments , the transport vehicle 8
Is not left behind by the excavator body 1. Therefore, if the stop position of the hoist 6 of the hoist beam 5 is determined relative to the positioning cart 18, the stop position of the hoist 6 will be maintained regardless of the advance of the excavator body 1.
Also it would be fixed with respect to, the simultaneous excavation shield
In this case , the segment 4 on the carrier 8 can be automatically gripped by the hoist 6.

An embodiment of the second invention will be described with reference to FIGS.

As shown in FIG. 5, behind the excavator body 1 (simultaneous excavation shield) for simultaneously excavating and assembling segments, a temporary receiving fork 31 for temporarily receiving the segments 4 and the like.
Is connected via a beam 33 for towing. The temporary receiving carriage 32 runs on the rail 34 laid in the mine while being pulled by the excavator body 1.

The temporary receiving carriage 32 is composed of a frame 35 having a frame shape. The front frame 36 of the frame 35
A positioning bracket 37 is provided at a lower portion of the transporting carriage 8 with which the bumper 23 of the carriage 8 comes into contact. The bumper 23
As shown in FIG. 2 and FIG. 3, it is provided at the front end of the carrier 8. On the back of the bumper 23,
Is turned on when it comes into contact with the positioning bracket 37, and turned off by the return spring when it comes apart.
Is provided.

The limit switch 25 is connected to the drive motor 13 via the controller 26. However, since these have exactly the same structure as in the previous embodiment, detailed description thereof will be omitted. After all, the follower means causes the transport vehicle 8 to move forward integrally with the temporary receiving vehicle 32 pulled by the excavator body 1.

The temporary receiving carriage 32 is provided with a column 38 for supporting the temporary receiving fork 31. As shown in FIG. 4 (a plan view of the temporary receiving fork 31), rollers 40 provided on the elevating frame 39 of the temporary receiving fork 31 are sandwiched between these columns 38. The lifting frame 39 is moved up and down along the column 38 by a driving force of a chain or the like.

The temporary receiving fork 31 has a telescopic structure that can be expanded and contracted in multiple stages by a chain or a hydraulic cylinder, and supports the segment 4 on the transporting carriage 8 from below as shown in FIG. The upper surface of the temporary receiving fork 31 is formed obliquely in accordance with the radius of the segment 4. In FIG. 4, reference numeral 9 denotes a rail of the transport trolley. When the temporary receiving fork 31 is contracted, the fork 31 is accommodated in the elevating frame 39, and when extended, the fork 31 is extended above the rail 9.

Further, a hoist beam 5 is connected to the excavator body 1 as in the previous embodiment, and a hoist 6 is provided on the hoist beam 5 so as to be able to travel. The stop position of the hoist 6 is adjusted to the temporary receiving fork 31 of the temporary receiving trolley 32. As shown in FIG. 6, the hook 7 is lowered so that the segment 4 on the temporary receiving fork 31 can be gripped. I have.

The operation of the present embodiment having the above configuration will be described.

When the excavator body 1 excavates, the temporary receiving carriage 32 connected thereto is integrally advanced. Then, following the advance of the temporary receiving truck 32, the transporting truck 8 is moved forward by the following means as shown in FIG. As a result, as the excavator body 1 excavates, the temporary receiving vehicle 32 and the transport vehicle 8 move forward integrally. Thereby, the relative positions of the segments 4 and the like on the transport trolley 8 and the temporary receiving forks 31 of the temporary receiving trolley 32 are fixed regardless of the excavation of the excavator body 1.

Therefore, if the temporary receiving fork 31 is extended, it is possible to support the segment 4 on the transporting carriage 8 from below, as shown in FIG. After that, temporary fork 3
1 is raised along the struts 38 to lift the segments 4 as shown in FIG. By temporarily receiving the segment 4 in this manner, the empty transport vehicle 8 can be immediately returned to the tunnel entrance side, and the operation schedule of the transport vehicle 8 becomes easy.

The segment 4 on the temporary receiving fork 31 is gripped by the hoist 6 and sent to the erector. The positional relationship between the temporary receiving fork 31 and the hoist 6 is as follows.
Since the hoist beam 2 and the hoist beam 5 are indirectly integrated via the excavator body 1, if the stop position of the hoist 6 is determined, it is uniquely fixed.

Thus, in a so-called simultaneous excavation shield for simultaneously excavating and assembling the segments , the transport vehicle 8
Is not left behind by the excavator body 1. Therefore, the segment 4 on the carrier 8 can be automatically gripped by the hoist 6 in the simultaneous excavation shield.

[0040]

According to the present invention, the following excellent effects can be exhibited.

(1) According to the first invention, excavation and segmentation
Is a so-called simultaneous excavation shield that simultaneously performs
Can also regardless to fix the relative position of the segments on the hoist and the conveyance carriage. Therefore, it is possible to achieve an automatic gripping system of the segment from the carrier to the hoist.

(2) According to the second invention, excavation and segmentation
Is a so-called simultaneous excavation shield that simultaneously performs
Can also regardless to fix the relative position of the segments on the tentative receiving fork and the platform car. Therefore, it is possible to achieve an automatic temporary receiving system for a segment from the transport vehicle to the temporary receiving fork.

[Brief description of the drawings]

FIG. 1 is a side view of a shield machine showing one embodiment of the first invention.

FIG. 2 is a side view showing a carriage of the shield machine.

FIG. 3 is a front view of the transport vehicle.

FIG. 4 is a plan view of a temporary receiving fork.

FIG. 5 is a side view of a shield machine showing one embodiment of the second invention.

FIG. 6 is a view showing the operation of the shield machine.

FIG. 7 is a side view of a shield machine showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Excavator main body 4 Segment 5 Hoist beam 6 Hoist 8 Carriage carriage 18 Positioning carriage 25, 26, 13 Following means 32 Temporary receiving carriage

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takeshi Masuo 2-3-1, Shimotakatsu, Tsuchiura-shi, Ibaraki Pref. No. 2 Inside the Advanced Construction Technology Center (72) Inventor Shigeo Fujii 11-1 Kitahama-cho, Chita-shi, Aichi Prefecture Ishikawajima-Hari Maju Industry Co., Ltd. Aichi Factory (56) References JP-A-2-194298 (JP, A JP-A-8-82198 (JP, A) JP 6-47918 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 11/40

Claims (2)

(57) [Claims] 1. A hoist beam connected to the rear of an excavator main body and advancing integrally with the excavator main body, a segment on a transport trolley provided on the hoist beam so as to be able to run freely, and conveyed from the rear of the tunnel. And a hoist for suspending the tunnel, and simultaneously assembling the segments and the like by the excavator main body, wherein the hoist beam is provided behind the excavator main body. Support the rear of
E together with the advancing hoist beam and integrally with simultaneous excavation
Connecting the positioning carriage for positioning the transporting carriage for ist, the carrier table vehicle with respect to the positioning carriage
And to advance integrally with the excavation of the shield machine main body, the transporting carriage, driven to travel, stop the conveyance carriage motor
Position that is in contact with the tip of the
Sensor and sensor that sense that the
Control to start and stop the drive motor by detecting
And a follower for a carrier such as a segment, provided with a follower comprising: 2. A hoist beam that is connected to the rear of the excavator main body and advances integrally with the excavator main body, and a segment on a transport trolley that is provided on the hoist beam and that is conveyed from the rear of the tunnel. And a hoist for suspending the tunnel, and simultaneously assembling the segments and the like by the excavator main body, wherein the hoist beam is provided behind the excavator main body. Support the rear of
Along with the hoist beam by simultaneous excavation,
Connecting the temporary supporting carriage having a provisional receiving fork for Kari受segments or the like on the conveyance carriage, the <br/> the conveying platform vehicle with respect to the temporary receiving carriage, integral with the excavation of the shield machine main body Traveling / stopping the transport trolley on the transport trolley to advance forward
The position of the drive motor to be brought into contact with the tip of the transport vehicle
Detect that you have moved away from the specified position backward
Starts and stops the drive motor based on sensor and sensor detection
And a follower for a carrier such as a segment, wherein the follower comprises a controller comprising a controller .