JPH062487A - Piping extending device - Google Patents

Abstract

PURPOSE:To perform the piping extending works efficiently by grasping a new piping with a crane mechanism mounted on a dolly which is self-mobile along piping, and lifting it down onto the specified connecting position. CONSTITUTION:A crane mechanism 4 having hang support mechanisms 4b, 4b and a mounting/removing mechanism 4c is mounted on a dolly 2 which is self-mobile along piping. The dolly 4 is allowed to travel to the piping connecting position, and the mounting/removing mechanism 4c is operated, and a new piping to be connected Pb is fixed at the foremost extremity of the hang support mechanism 4b. The gripped new pipe Pb is lifted down onto the intended connecting position by the hang support mechanism 4b. A connecting mechanism 6 is operated, and the new pipe Pb is connected with the already laid piping Pa. Therein the crane mechanism and/or connecting mechanism 6 is automatically controlled through a control mechanism 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe extending apparatus which moves along a pipe continuously connected in a substantially horizontal state to newly connect an existing pipe to extend a pipe line. .

[0002]

2. Description of the Related Art In a shield work for forming an excavation pit in the ground by an excavator, for example, a mud pipe used in a mud excavation method is constructed by sequentially connecting and extending the pipes from the equipment on the ground. Pipes will be installed up to the underground excavator. The pipe to be installed is extended by sequentially connecting a new pipe to the pipe located at the forefront in the excavation direction as the excavator advances. In the drawing work of the pipe, the pipe located at the forefront in the excavating direction is separated from the expansion mechanism connected to the front part of the pipe, and the pipe to be connected temporarily placed in advance at the connection position is located at the forefront. Connect to the tip of the pipe. The expansion and contraction mechanism is formed by a flexible hose or the like that is interposed between the pipe located at the forefront and the excavator and connects both of them so that mud can be sent and discharged. After separating from the pipe located at the forefront, the installation space is formed by shortening by the length of the pipe to be connected. The pipes that have been installed will be connected by several workers by fastening the front and rear ends to the end of the expansion mechanism or the existing pipe with bolts or the like via joints. Then, in the shield work, after the connection work is completed, the excavator is operated again, and the excavation and the pipe extension for the newly connected pipe length are alternately performed.

[0003]

However, in the case of the pipe stretching apparatus as described above, the following problems have occurred. That is, when the weight of the pipe to be connected is large, the work of extending the pipe is difficult to set up the pipe at the connection position and becomes a bitter job for the worker. It was a cause of the increase in construction cost. Further, the connection work is unsatisfactory in work efficiency because it is inside the excavation mine with a narrow space and poor scaffolding, which has been a cause of extending the construction period of the excavation pit.

The present invention has been made in view of the above-mentioned problems, and provides a pipe drawing apparatus capable of automatically installing a new pipe to be connected at a target position and efficiently performing the drawing work of the pipe. That is the purpose.

[0005]

In the pipe stretching apparatus of the present invention, a traveling carriage that can travel along the stretching direction and a new pipe at a connection position between the traveling carriage and the existing pipe are installed. It has a crane mechanism to hang, and the crane mechanism is a suspension support mechanism that is vertically mounted on a traveling carriage,
The pipe stretching apparatus according to claim 1, further comprising: an attachment / detachment mechanism that is attached to a tip end portion of the suspension support mechanism to attach / detach the pipe to be newly connected to / from the tip end of the suspension support mechanism. Connecting the suspension support mechanism to a control mechanism mounted on the device, and the pipe stretching device according to claim 1 or 2, wherein the traveling carriage measures the position of the pipe to be connected. The attachment of the sensor was taken as a means for solving the above problems.

[0006]

According to the pipe extending apparatus of the first aspect, the traveling carriage moved to the pipe connecting position operates the crane mechanism to suspend the pipe to be connected to the existing pipe to the connecting position. , The pipe is automatically stretched.
The crane mechanism brings the attachment / detachment mechanism into contact with the pipe to be connected by the operation of the suspension support mechanism, and operates the attachment / detachment mechanism in this state to attach the pipe to the tip of the suspension support mechanism. After mounting the pipe to the suspension support mechanism, suspend the gripped pipe at the target connection position with the suspension support mechanism. According to the pipe drawing apparatus of the second aspect, the operation can be performed unattended by automatically controlling each mechanism by the control mechanism. It is also possible to connect a drive device that provides a traveling drive force to the traveling vehicle and other external devices, and control them in conjunction with each other. According to the pipe drawing apparatus of claim 3, when the crane mechanism and the distance measuring sensor are connected so as to be interlockable via the control mechanism, the traveling of the control mechanism is calculated from the measurement value of the distance measuring sensor. The distance between the carriage and the pipe to be connected is measured to calculate the relative position between the two, and the operation of the suspension support mechanism is controlled based on the calculated result.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to. In the figure, reference numeral 1 is a pipe extending apparatus of the present embodiment for automatically extending a pipeline for sending and discharging muddy water of an excavator (not shown) that forms an excavation pit in the ground by the muddy water excavation method, and 2 is The traveling carriage, 3 is an extension mechanism that is installed in front of the traveling carriage in the extending direction and connects the front and rear pipes, 4 is a crane mechanism that suspends the pipe to be connected to the connection position, and 5 is the suspended pipe at the connection position. An attaching / detaching mechanism, 6 is a connecting mechanism for connecting the pipe grasped at the connecting position to an existing pipe or a telescopic mechanism, 7a is an end detecting sensor for detecting an end of the existing pipe to which a new pipe should be connected, and 7b is A distance measuring sensor for calculating the distance between the traveling carriage 2 and the new pipe Pb, 8 is a control mechanism for transmitting an electric signal to control the operation of the pipe stretching device 1, and 9 is a conveyance for conveying the pipe to be connected. The carriage 10a is the traveling carriage 2 and the extension / contraction. A first rail on which each device configuring the structure 3 travels, 10b on a second rail on which the carriage 9 travels, Pa is an existing pipe, Pb is a new pipe to be connected by the pipe drawing device 1, and T is an existing pipe Pa. And a tunnel in which a new pipe Pb should be installed. The tunnel T is formed by a mud excavation method using an excavator installed in front of the pipe drawing apparatus 1 (on the left side in FIG. 1). In addition, the existing pipe Pa and the new pipe Pb are used to send and discharge mud for the tunnel T construction, and two pipes for sending and discharging mud are arranged in parallel and both for sending and discharging. The hanging bracket Pc having a shape of bundling the pipes is fitted from above and is fixed so that the interval between the pipes for both feeding and discharging is constant. The existing pipe Pa and the new pipe Pb can be lifted upward by the crane mechanism 4 via the hanging bracket Pc. The suspending bracket Pc is attached in advance to the crane mechanism 4 at a position where the new pipe Pb can be suspended at a target position.

As shown in FIGS. 1 and 2, the pipe stretching device 1 includes a traveling carriage 2 that travels on the pair of first rails 10a extending along an existing pipe Pa to be connected and a new pipe Pb, and a telescopic vehicle. It is configured by the mechanism 3 and is configured to automatically join the new pipe Pb under the control of the control mechanism 8. The first rails 10a and 10a are installed in a pair so as to sandwich the existing pipe Pa and the new pipe Pb therebetween. The first rail 10a,
In the left side portion of the drawing 9 in the front direction (left side in FIG. 1),
A second rail 10b for traveling the transport carriage 9 that transports the new pipe Pb to be connected is laid in parallel with the first rail 10a. In addition, the first rails 10a, 10
b may be used as a truck line or the like for discharging the soil generated by excavation of the ground to the outside of the mine.

The traveling vehicle 2 has a structure in which a pipe suspending space 2a for suspending the new pipe Pb at the connection position is opened in the central portion. Piping suspension space 2 for traveling vehicle 2
The connecting pipe 11 of the expansion and contraction mechanism 3 is connected to the front portion of a. Further, before and after the pipe suspension space 2a, the attachment / detachment mechanism 5 and the connection device 6 are attached at positions where the end of the existing pipe Pa or the end of the new pipe Pb to be connected to the end of the expansion / contraction mechanism 3 can be connected. There is. As shown in FIG. 3, an end detection sensor 7a that detects the end of the existing pipe Pa is attached to the rear portion of the pipe suspension space 2a. The end detection sensor 7a is configured to detect the end of the existing pipe Pa without contact with ultrasonic waves or radio waves.
An edge detection signal is transmitted to the control mechanism 8 when the edge is detected. Further, as shown in FIG.
A distance measuring sensor 7b is fixed to the central portion and the side portion of the front portion of the vehicle for transmitting the ultrasonic wave or the like in the horizontal direction to measure the distance between the traveling carriage 2 and the transport carriage 9 in a non-contact manner. The distance measurement sensor 7b is also connected to the control mechanism 8 and transmits the measurement signal to the control mechanism 8 similarly to the end detection sensor 7a. Then, the control mechanism 8 that receives the measurement signal calculates the position of the new pipe Pb and controls the target operation of the suspension support mechanism 4b. Further, a stop position indicator 7c for transmitting a radio wave or the like is fixed to the rear side portion of the traveling carriage 2 so as to instruct the transport carriage 9 to accurately stop the new pipe Pb at the suspended position. .

At both front and rear ends of the pipe suspension space 2a,
Crane mechanisms 4 and 4 are installed. These crane mechanisms 4 and 4 perform the same movement by being manually or automatically operated by the operator, and the crane 9 and the new pipe Pb are moved from the carriage 9.
It is configured to be hung at a desired connection position while being horizontally held.

As shown in FIG. 2, the telescopic mechanism 3 includes a plunger valve unit 13 installed in front of the traveling carriage 2 via an adjustment jack 12, and a hose installed in front of the plunger valve unit 13. With the hoisting carriage 14, the connecting pipe 11 installed between the plunger valve unit 13 and the traveling carriage 2, and the telescopic hose 15 installed between the plunger valve unit 13 and the hose hoisting carriage 14. It is configured. The plunger valve unit 13 and the hose hoisting carriage 14 are both configured to travel on the first rail 10a.

The adjusting jack 12 is mounted between the traveling carriage 2 and the plunger valve unit 13 along the extending direction, and expands and contracts by itself so that the distance between the traveling carriage 2 and the plunger valve unit 13 expands and contracts. Has become. The plunger valve unit 13 is installed between the communication pipe 11 and the expansion / contraction hose 15 so as to cut off the flow of muddy water between the communication pipe 11 and the expansion / contraction hose 15. Further, the plunger valve unit 13 is connected to a towing winch 16 attached to the hose hoisting carriage 14 by a towing wire 17a, and either the towing winch 16 is operated or the length of the towing wire 17a is made constant and the hose hoisting truck 14 is operated. It is designed to move forward by moving forward. As shown in FIGS. 2 and 3, the connecting pipe 11 has a front end portion connected to the plunger valve unit 13, and a rear end portion attached to the lower front portion of the traveling carriage 2 so as to be movable back and forth in the extending direction. . The front end portion of the connecting pipe 11 is a flexible portion 11a that can freely expand and contract, and is adapted to expand and contract appropriately with respect to the expansion and contraction of the adjustment jack 12.

As shown in FIG. 3, the hoist hoisting carriage 1
Reference numeral 4 is a self-propelled type equipped with a drive mechanism (not shown), and is equipped with the towing winch 16 and a hoisting motor 18 for hoisting the telescopic hose 15 and regardless of the length of the telescopic hose 15. And telescopic hose 1
It is configured such that muddy water can flow between and. The hoisting motor 18 is configured to wind the telescopic hose 15 around the outer circumference of a drum-shaped hoisting core. Further, the hoisting motor 18 can horizontally move the mounting position in the front-back direction in the stretching direction. The hose hoist truck 14 includes a towing winch 16 and a towing wire 17.
Plunger valve unit 13 by winding
Is towed forward so that the hoisting motor 18 and the telescopic hose 15 can hoist the telescopic hose 15 without bearing the traction force of the plunger valve unit 13. The expandable hose 15 is made of synthetic resin or the like, and is arranged in parallel in two in plan view and connected to the connecting pipes 11 by the plunger valve unit 13.

As shown in FIGS. 1 and 4, each crane mechanism 4 includes columns 4a standing upright at the front and rear ends of the pipe suspending space 2a of the traveling carriage 2 in the extending direction, and vertically above the columns 4a. A suspension support mechanism 4b rotatably attached to
A new pipe Pb is attached to the tip of each suspension support mechanism 4b.
And an engaging cylinder (attachment / detachment mechanism) 4c for locking the end of the suspension support mechanism 4b.

The suspension support mechanism 4b is a sliding device including an arm member 4d attached to the upper end of each column 4a so as to be vertically rotatable, and a jack whose base end is fixed to the tip of each arm member 4d. Hereinafter, it will be referred to as a first jack. A second jack 4f for vertically rotating the suspension support mechanism 4b is interposed between each of the columns 4a and the arm member 4d. As shown in FIG. 5, the engagement cylinder 4c is attached to the rear surface of the front end of the first jack 4e located forward in the extending direction and the front surface of the front end of the first jack 4e located rearward in the extending direction. The engagement cylinder 4c attached to the first jack 4e on the front side in the extending direction has a rod (not shown) protruding forward on the horizontal direction. Further, the engagement cylinder 4c attached to the first jack 4e rearward in the extending direction.
Has a rod (not shown) protruding rearward in the horizontal direction. The rod of each of the engagement cylinders 4c is fixed to the first jack 4 when the rod is projected.
A first rod insertion hole 4 formed horizontally at the tip of e
It penetrates g and projects to the opposite side in the horizontal direction. Further, in each of the engagement cylinders 4c, the suspension support mechanism 4b is actuated so that each of the first rod insertion holes 4g is connected to the suspension bracket Pc.
If the rod is made to project in a state where it is aligned with the second rod insertion hole 4h that is provided through the upper part of the rod in the horizontal direction, it will protrude to the opposite side of the arm member 4d through the first rod insertion hole 4g. When the rod reaches the second rod insertion hole 4h and the suspension support mechanism 4b moves upward, the suspension bracket P is attached.
The weight of the pipe can be transmitted from c to the arm member 4d, and the hanging bracket Pc can be lifted. Further, as shown in FIG. 6, each of the first jack 4e and the second jack 4f is provided with an expansion / contraction amount measuring device 4i for measuring the expansion / contraction amount of its own rod, and each expansion / contraction amount measuring device. Since 4i is connected to the control mechanism 8, the expansion / contraction amount of each crane mechanism 4 can be automatically controlled by the control mechanism 8 based on the measurement signal transmitted from each distance measurement sensor 7b.

As shown in FIGS. 1 and 5, a carrier truck 9 is provided.
Has a shape in which both front and rear ends of the second rail 10b protrude upward in a side view, and two vehicles are connected in the extending direction to be connected to a motor vehicle for operation. Each of the carrier vehicles 9 is self-propelled, and the stop position detection sensor 9a fixed to the side of the carrier vehicle 9 senses an electric wave or the like transmitted from the stop position indicator 7c. It is designed to stop at a position where it can be hung accurately. The sensing of the stop position of the carrier vehicle 9 may be performed by a touch sensor or the like other than the non-contact detection method. It should be noted that the new pipe Pb placed on the carrier truck 9 is preloaded at a position where it can be accurately hung up at the connection position when the carrier truck 9 stops at the correct stop position.

The operation of this embodiment will be described below. To connect the new pipe Pb to the existing pipe Pa by the pipe stretching device 1, the following procedure is performed. First, as shown in FIG. 3, after excavation by an excavator (not shown) located on the left side of the drawing, the connecting device 6 is operated in a state of being held by the attaching / detaching mechanism 5 so that the connecting pipe 11 and the face closest to the cutting face. The existing pipe Pa located is disconnected. Before the separation work, the mud feed to the existing pipe Pa is stopped in advance, and the control mechanism 8 is actuated to close the plunger valve unit 13 to discharge the mud and the mud already sent to the excavator side. Ejection to the new pipe Pb connection position is prevented. The connecting pipe 11 and the existing pipe Pa are connected by a strut coupling 19 and are automatically attached / detached by the connecting device 6. Strab coupling 19
Is for watertightly fastening both the existing pipe Pa and the new pipe Pb to be connected from the outside, and has a structure that facilitates automation of attachment / detachment. At this time, the telescopic hose 15 is in an expanded state as the excavator excavates.

Next, when the separation work is completed,
As shown in FIG. 7, the control mechanism 8 has a hose hoist truck 1
4 to send a signal to the brake to fix the stop position of the hose hoist truck 14 and to operate the towing winch 16 and hoisting motor 18 to pull the plunger valve unit 13 forward in the extending direction and to extend and contract the hose. Roll up 15. Since the plunger valve unit 13 and the traveling carriage 2 are connected by the adjusting jack 12, the traveling carriage 2 also moves forward as the plunger valve unit 13 advances. The movement of the plunger valve unit 13 and the traveling carriage 2 is performed until the end detection sensor 7a detects the separated end of the existing pipe Pa. At this time, the stop position of the traveling carriage 2 is set slightly ahead of the point suitable for connecting the new pipe Pb, and after stopping the traveling carriage 2, the stop position of the plunger valve unit 13 is braked and the adjustment jack 12 is set. To make fine adjustments accurately. The stop position of the traveling vehicle 2 corresponds to the length of the fastening of the new pipe Pb and the strab coupling 19 which is slightly longer than the length of the new pipe Pb to be connected from the end of the existing pipe Pa that has been separated.

As shown in FIG. 9, when the traveling carriage 2 is stopped at an accurate stop position, the conveying carriage 9 is moved and the crane mechanism 4 is operated to move the conveying carriage 2 stopped at a desired position on the side of the traveling carriage 2. The new pipe Pb is suspended from the dolly 9 to a desired connection position. The suspension of the new pipe Pb is first controlled by the control mechanism 8 based on the measurement signal of the distance measurement sensor 7b.
By adjusting the amount of expansion and contraction of the jacks 4e and the second jacks 4f, the tips of the first jacks 4e are brought close to the suspension brackets Pc while the rods of the engagement cylinders 4c are accommodated. Then, after aligning the first rod insertion hole 4g with the second rod insertion hole 4h, the engagement cylinder 4c is extended to move the rod through the first rod insertion hole 4g as shown in FIG. The second rod insertion hole 4h is inserted.
When the insertion of the rod is completed, the second of each suspension support mechanism 4b is
Suspend bracket Pc by extending the same amount of jack 4f
The set of new pipes Pb is lifted upwards via the while keeping parallel. After contracting the first jack 4e once, as shown in FIG. 9, while contracting the second jack 4f by an appropriate amount, the first jack 4e is extended again and the new pipe Pb is suspended at the target position. . The above operations are performed in a state in which the new pipe Pb is kept parallel by operating both the front and rear suspension support mechanisms 4b in the same manner.

As shown in FIG. 10, when the accurate hanging of the new pipe Pb is completed, the connection device 6 is operated with the attachment / detachment mechanism 5 gripping the new pipe Pb, and the front and rear end portions of the new pipe Pb are operated. The connection pipe 11 or the existing pipe Pa is connected. After the connection is completed, the blockage in the plunger valve unit 13 of the communication pipe 11 is released, and the extension hose 15 is communicated.

[0021] In the following, as the excavator excavates in the above-mentioned manner, the existing pipe Pa at the forefront and the connecting pipe 11 are disconnected and the new pipe Pb is repeatedly connected, so that a new pipe is sequentially added to the existing pipe Pa. The pipe Pb is contacted and the pipe is extended. In addition to the above-described structure, the expansion / contraction mechanism 3 can connect the pipe on the excavator side and the opposite side of the pipe stretching device 1, and can be attached to / detached from the new pipe Pb to be connected or the existing pipe Pa at the forefront. Other forms may be used as long as the length of the new pipe Pb to be connected at the time of reduction can be secured.

Therefore, according to the pipe extending apparatus of the present embodiment, the new pipe Pb to be connected is conveyed by the conveying carriage 9, and the expansion / contraction mechanism 3 and the existing pipe Pa located at the forefront are detached and the traveling carriage is used. Since the positioning of the stop position 2 and the suspension of the new pipe Pb to the connection position and the connection with the existing pipe Pa can be automatically performed by the control of the control mechanism 8, safety is improved by unmanned work. Of course, it not only frees workers from bitter work, but also copes with labor shortage. Moreover, since each work can be performed easily and quickly by automating the work, it is possible to improve the work efficiency and shorten the work period.

[0023]

As described above, according to the pipe stretching apparatus of the present invention, the traveling carriage that can travel along the stretching direction and the connection position between the traveling carriage equipped with the traveling carriage and the existing pipe are installed. With a crane mechanism to suspend new piping,
The crane mechanism includes a suspension support mechanism that is vertically mounted on a traveling carriage, and an attachment / detachment mechanism that is attached to a tip end portion of the suspension support mechanism and that attaches / detaches the pipe to be newly connected to the tip end of the suspension support mechanism. And the pipe stretching device according to claim 1, wherein at least the suspension support mechanism is connected to a control mechanism mounted on the device, and the pipe stretching device according to claim 1 or 2. Since the traveling carriage is equipped with a distance measuring sensor for measuring the position of the pipe to be connected, the safety is improved by unmanning the work, and the worker is released from the troublesome work. In addition to being able to cope with labor shortages, it is possible to perform each of the above-mentioned operations easily and quickly by automating the work, thus improving work efficiency and shortening the construction period. Excellent effects such as to be possible.

[Brief description of drawings]

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

FIG. 2 is a schematic side view showing the disconnection of the pipe using the pipe drawing apparatus of the present embodiment.

FIG. 3 is a plan view showing a flexible portion.

FIG. 4 is a partially enlarged view showing the operating method of the crane mechanism.

5 is a plan view of FIG.

FIG. 6 is a schematic view showing a control method of the crane mechanism.

FIG. 7 is a schematic side view showing movement of the traveling carriage to a position where a new pipe is suspended.

FIG. 8 is a schematic side view showing a procedure for suspending a new pipe at a connection position.

FIG. 9 is a schematic side view showing completion of suspension of a new pipe at a connection position.

FIG. 10 is a schematic side view showing a connection between a new pipe, a telescopic mechanism, and an existing pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipe extension device 2 Traveling carriage 4 Crane mechanism 4b Suspension support mechanism 4c Attachment / detachment mechanism 6 Connection mechanism 7c Distance measuring means 8 Control mechanism Pa Existing pipe Pb New pipe T tunnel

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Yoshitaka Hachisuka 1-1-1, Wadasaki-cho, Hyogo-ku, Kobe-shi, Hyogo Prefecture Mitsubishi Heavy Industries, Ltd. Kobe Shipyard (72) Inventor Kiyoshi Ohori Hyogo-ku, Kobe-shi, Hyogo 1-1-1 Wadazaki-cho Mitsubishi Heavy Industries, Ltd. Kobe Shipyard (72) Inventor Yoshiyuki Obara Minato-ku, Tokyo Shibaura 1-3-2 Shimizu Construction Co., Ltd. (72) Inventor Hideki Hagiwara Minato-ku, Tokyo Shibaura 1-32 Shimizu Construction Co., Ltd. (72) Inventor Yuzaburo Fujinaga 1-32 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Kazuo Miyazawa 1-2 Shibaura, Minato-ku, Tokyo No. 3 Shimizu Corporation

Claims (3)

[Claims] 1. A pipe stretching device that moves along a pipe connected in a substantially horizontal state in a connected state to connect a new pipe to an existing pipe to stretch a pipeline, the stretching direction being The traveling carriage is equipped with a traveling carriage and a crane mechanism that is mounted on the traveling carriage and hangs a new pipe at the connection position with the existing pipe.The crane mechanism is vertically mounted on the traveling carriage. A pipe stretching apparatus, comprising: a suspension supporting mechanism; and a detaching mechanism that is attached to a tip end portion of the suspension supporting mechanism and attaches and detaches the pipe to be newly connected to the tip end of the suspension supporting mechanism. 2. The pipe drawing apparatus according to claim 1, wherein at least the suspension support mechanism is connected to a control mechanism mounted on the apparatus. 3. The pipe stretching apparatus according to claim 1 or 2, wherein a distance measuring sensor for measuring a position of the pipe to be connected is attached to the traveling carriage. Stretching device.