JP2003336483A - Divided pipe and connecting method for divided pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a divided pipe safely carried by appropriately retaining a cover part and surely connecting the cover part to a gutter part and to provide a connecting method for the divided pipe. <P>SOLUTION: A cover part 1b of a primary jacking pipe 1 halved into the gutter part 1a and the cover part 1b is provided with an interlock mechanism 100 comprising a fitting hole 10, projecting parts 19a and 19b, a rotation key 13 formed with a hole 11 for a hexagonal wrench, a link mechanism 15, and lock parts 17a and 17b. Lug parts 59a and 59b of a robot arm 5 are hung to the projecting pats 19a and 19b to retain the cover part 1b, the cover part 1b is inserted and fitted into an opening part 1c of the gutter part 1a, the hexagonal wrench 61 of the robot arm is rotated, and the lock parts 17a and 17b are operated into a second state via the link mechanism 15 to engage the lock parts 17a and 17b with a connecting step part 1e of the gutter part, so that the gutter part 1a and the cover part 1b are connected to each other. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a split pipe consisting of a gutter-shaped portion and a cover portion which are split into two parts in the longitudinal direction, and a method for connecting the split pipes. More specifically, the ground is excavated. Without the need for a gutter and cover to be used to build small diameter tunnels for burying buried objects such as telecommunication lines, power lines, sewer pipes, gas pipes, etc. The present invention relates to a divided pipe that is a divided primary propulsion pipe and a method for connecting divided pipes that connect a gutter-shaped portion of the divided pipe and a cover portion.

[0002]

2. Description of the Related Art A primary propulsion pipe used to construct a small-diameter tunnel by a non-excavation method that does not excavate the ground is divided into a gutter-shaped part and a cover part, and the gutter-shaped part formed by this division is divided into two parts. An electrical signal for controlling the tip device, which is a non-cutting propulsion machine used at the head of the primary propulsion pipe from the opening into the trough,
After inserting cables or hoses that supply fluid such as hydraulic pressure and lubricant, transport the cover to the opening of the gutter, close the cover to the opening of the gutter, and then close the cover. The part is integrally connected to the gutter-shaped part.

A method of integrally transporting the cover portion to the opening of the gutter-shaped portion and then integrally coupling the cover portion to the gutter-shaped portion is disclosed in, for example, Japanese Patent Laid-Open No. 2001-40990. As shown in the above, set the loading / connecting device with the opening of the gutter facing downwards, provide the cover directly above the gutter, and place the gutter with the opening facing downward toward the cable introduction pipe. Stop the hanging of the gutter-shaped part at the position where the cable introduction pipe is completely accommodated in the gutter-shaped part from the opening, and turn the gutter-shaped part 180 around the longitudinal axis by the rotary motor.
Rotate the cover so that the opening faces upward, and move the cover to the opening of the gutter-shaped part with the cover installation jack to connect the cover part and the semi-cylindrical part, or face down the opening of the gutter-shaped part. Set as the loading / connecting device, the cover part is provided on the lower side of the gutter-shaped part, the gutter-shaped part with the opening facing downward is hung toward the cable introduction pipe, and the cable introduction pipe is gutter-shaped from the opening. Stop the hanging of the gutter at the position where it is completely stored inside the unit, move the cover laterally to just below the gutter, and join the gutter with the cover. ing.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the conventional method disclosed in Japanese Patent Publication No.-40990, it is described that a cover installation jack or the like is used to convey the cover portion, but it is suitable to prevent the cover portion from dropping when the cover portion is conveyed. No reference is made to a holding and transporting structure for holding it securely. Since the cover part is quite heavy, it is important to properly hold and carry the cover part so that it does not drop. A simple and excellent holding and carrying structure that can hold and carry the cover part properly However, there is a problem that there is no conventional safe, simple and excellent holding and conveying structure.

Regarding the transportation of the cover portion, for example, a method of fixedly transporting it using a magnet or a method of sandwiching it using hydraulic pressure can be considered, but the former requires a magnet mechanism and the latter requires driving. It is necessary to equip a hydraulic device for use, which causes a problem that the device configuration becomes large, and in the former case, there is a problem that there is a concern about safety when the supply of electricity is stopped.

Further, in the conventional method disclosed in the above-mentioned Japanese Patent Laid-Open No. 2001-40990, the connection between the gutter-shaped portion and the cover portion is performed by using the fitting pin and the fitting groove.
There is also a demand for the development of a new method capable of performing accurate coupling.

The present invention has been made in view of the above,
It is an object of the present invention to provide a split pipe that can hold the cover part appropriately and can be safely transported, and can surely connect the cover part to the gutter-like part, and a method for connecting the split pipes.

[0008]

In order to achieve the above object, the present invention according to claim 1 is one that is divided into two parts in the longitudinal direction and has a substantially cylindrical shape in which an opening is formed in the longitudinal direction. A gutter-shaped part and a cover part which is divided into two in the longitudinal direction and is formed so as to close the opening part of the gutter-shaped part, the cover part comprising the cover part. Formed on the cover part so that the holding and fitting means of the carry-in connection device for moving the holding part to the opening part of the gutter-shaped part while holding the cover part for coupling to the opening part of the gutter-shaped part can be fitted. So that the cover portion can be held by the holding hole provided in the holding hole provided on the inner periphery of the fitting hole and the fitting hole of the carry-in connection device fitted in the fitting hole. The held part formed and the holding part of the holding and fitting means of the carry-in connection device are formed in the depth of the fitting hole. The engaging means with which the operating means of the carry-in connection device is engaged while the cover portion is held, and the first state in which the operating means of the carry-in connection device is degenerated by the operation of the engaging means are extended through the engaging means. A gutter-shaped part having a lock part that operates so as to take the second state that is brought out, and the gutter-shaped part is guttered to the cover part by the lock part engaging when the lock part is in the second state. The gist of the present invention is to have a connecting step part that is integrally connected to the part.

More specifically, it is divided into two in the longitudinal direction, and is a substantially semi-cylindrical gutter-shaped portion having an opening formed in the longitudinal direction and two in the longitudinal direction. On the other hand, it has a cover part formed so as to close the opening of the gutter-shaped part, and the cover part has a cover part for connecting the cover part to the opening of the gutter-shaped part. A fitting hole formed in the cover part so that the holding fitting means of the carry-in connection device for moving the holding part while moving toward the opening of the gutter-shaped part, and the inner periphery of the fitting hole A holding part formed so that the holding part provided in the holding and fitting means of the carry-in connection device fitted in the fitting hole is caught and the cover part can be held by the holding and fitting means of the carry-in connection device. Part (projection),
The operating means (wrench) of the carry-in connection device is engaged in a state where the holding part of the holding and fitting means of the carry-in connection device is hooked on the protrusion and holds the cover part, which is formed deep in the fitting hole. An engaging mechanism (rotary key) and an operating mechanism (link mechanism) engaging with the engaging mechanism, the operating mechanism operating when the operating mechanism of the carry-in / connecting device is operated, and the operating mechanism attached to the operating mechanism. A lock portion that operates so as to take a first state that is retracted and a second state that is extended according to the operation of the operating mechanism, and the gutter-shaped portion is such that the lock portion is in the second state. In this case, the gist of the present invention is to have a coupling step portion that engages with the lock portion and integrally couples the cover portion to the gutter-shaped portion.

According to the first aspect of the present invention, a rotary key having a fitting hole, a protrusion, and a wrench hole in a cover portion of a split pipe divided into a gutter-shaped portion and a cover portion, and a link. An interlock mechanism consisting of a mechanism and a lock part is provided, and the cover part is held in the opening part of the gutter-shaped part while properly holding it so that the holding fitting means of the carry-in connection device is hooked on the projection part so that the cover part can be transported. At the same time as inserting and aligning, the operating means of the carry-in connection device is engaged with the engaging means to operate, and the lock portion is operated to the second state through the operating mechanism to connect the lock portion to the gutter-shaped step. Since the gutter-shaped part and the cover part are joined by engaging with the part, the cover part can be transported while holding it securely so as not to drop, and the lock part is used to securely join the cover part to the gutter-shaped part. can do. Also,
Since the lock part engages with the step part inside the gutter-shaped part to connect, the structure including the lock part does not protrude from the outer surface of the primary propulsion pipe, and there is no influence on the propulsion by the primary propulsion pipe. . Further, after the completion of the propulsion, the cover portion can be easily separated from the gutter-shaped portion by inserting the actuating means such as a wrench into the engaging means of the cover portion.

The present invention according to claim 2 is the same as claim 1
A method for connecting a divided pipe, wherein the cover portion of the divided pipe is connected to a gutter-shaped portion using the divided pipe described in the above, wherein the holding fitting means of the carry-in connection device is inserted into the fitting hole of the cover portion. By hooking the holding part of the holding and fitting means of the carry-in connection device to the protrusion provided on the inner periphery of the fitting part, the gutter-shaped part of the cover part is held while holding the cover part by the holding and fitting means of the carry-in connection device. Of the carry-in connection device while the cover part is held by the holding and fitting means of the carry-in connection device while the cover part is aligned with the opening of the gutter-shaped part. Engaging the coupling means and activating the actuating means of the carry-in / connecting device engaged with the engaging means to actuate the actuating mechanism, and actuating the actuating mechanism sets the lock portion to the second state, As a result, the lock part is hooked on the connecting step part of the gutter part and the cover is covered. Part simultaneously the integrally coupled to trough, is released is caught in the holding portion and the protruding portion, and the gist to be released retention of the cover portion by the holding fitting means of the carry-connection device.

According to the second aspect of the present invention, the holding / fitting means of the carry-in / connecting device is inserted into the fitting hole of the cover part, and the holding part of the holding / fitting means is hooked on the protrusion to form the cover part. While holding, the cover part is moved so as to be aligned with the opening of the gutter-shaped part, the operating means of the carry-in connection device is engaged with the engaging means of the cover part, and the operating means is operated to operate the operating mechanism,
The lock portion is set to the second state, whereby the cover portion is integrally coupled to the gutter-shaped portion, and at the same time, the projection portion and the holding portion are released from being caught, so that the holding fitting means of the carry-in connection device serves to fix the cover portion. Since the holding is released, the cover can be transported while being surely held so as not to drop, and the cover can be surely coupled to the gutter-shaped part by using the lock. In addition, since the lock part engages with the step part inside the gutter-shaped part to connect, the structure including the lock part does not project from the outer surface of the primary propulsion pipe, and the influence on the propulsion by the primary propulsion pipe is prevented. Nor. Further, after the completion of the propulsion, the cover portion can be easily separated from the gutter-shaped portion by inserting the actuating means such as a wrench into the engaging means of the cover portion.

Further, the present invention according to claim 3 provides the invention according to claim 2.
In the invention described above, the gist is that the holding and fitting means of the carry-in connection device is a robot arm controlled by the carry-in connection device.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a state in which a primary propelling pipe 1 which is a split pipe according to an embodiment is being conveyed by a carry-in / connecting device 3.

As shown in the figure, the primary propulsion pipe 1 is formed so as to close a substantially semicylindrical trough-shaped portion 1a divided into two in the longitudinal direction and an opening 1c of the trough-shaped portion 1a. It is composed of the covered cover portion 1b. The opening 1c of the gutter-shaped portion 1a is held downward by the carry-in connection device 3, and the cover portion 1b is disengaged from directly below the opening 1c of the gutter-shaped portion 1a by the lower end of the robot arm 5 of the carry-in connection device 3. It is held diagonally in a sideways position.

In this way, the opening 1c is directed downward, and is provided directly below the opening 1c (not shown) in the trough-shaped portion 1a held by the carry-in / connecting device 3, for example, a communication conduit and power. After inserting a buried object such as a water pipe, a sewer pipe, a gas pipe, for example, by hanging the gutter-shaped portion 1a, the robot arm 5 is driven by rotation and ascending operation to cover the cover portion 1b with the gutter-shaped portion. The cover 1b is moved to the opening 1c of the la 1a, and the cover 1b is integrally coupled to the trough 1a.

FIG. 2 shows the carrying-in / connecting device 3 as shown in FIG.
FIG. 6 is a diagram showing a situation in which the primary propulsion pipe 1 composed of a gutter-shaped part 1a and a cover part 1b held by the robot arm 5 is conveyed into a starting shaft in a small-diameter tunnel excavation, for example.

Further, FIG. 3 shows the primary propulsion pipe 1 shown in FIG.
Connection device 3 and robot arm 5 holding
2 is moved further downward from the position shown in FIG. 2, and the cable introduction pipe 4 accommodating the cables and hoses 6 is located immediately below the opening 1c of the gutter-shaped portion 1a of the primary propulsion pipe 1. It is a figure showing the state just before the completion of the conveyance. By further lowering the gutter-shaped portion 1a by the carry-in connection device 3 from the state immediately before the completion of the conveyance, the cables and hoses 6 are inserted into the gutter-shaped portion 1a through the opening 1c.

In FIG. 4, the cables and hoses 6 (not shown in FIG. 4 for simplification of the drawing) are inserted into the trough-shaped portion 1a from the opening 1c from the state immediately before the completion of transportation shown in FIG. After that, the cover portion 1b held by the robot arm 5 is moved by the robot arm 5 just below the opening 1c of the gutter-shaped portion 1a, and immediately before the gutter-shaped portion 1a and the cover portion 1b are joined together. It is the figure which has shown roughly.

As can be seen from FIG. 4, the cover portion 1b is provided with a lock portion 17a and a projection portion 19a which form a part of an interlock mechanism for integrally connecting the gutter-shaped portion 1a and the cover portion 1b. The robot arm 5 holding the cover portion 1b is engaged with the protrusion 19a of the cover portion 1b, and the cover portion 1b.
It is shown that an ear portion 59a as a holding portion for holding b and a box 53 described later are provided.

FIG. 5 shows, as a step following FIG. 4, a trough-shaped portion 1
The moment when a and the cover portion 1b are joined together and the cover portion 1b
It is a figure showing roughly some interlock mechanisms provided in. As shown in FIG. 5, the lock portion 17a provided on the cover portion 1b is engaged with a part of the gutter-shaped portion 1a, specifically, a connecting step portion described later to connect the cover portion 1b to the gutter-shaped portion 1a. You can see that

Next, referring to FIGS. 6 to 12, the interlock mechanism for connecting the trough-shaped portion 1a and the cover portion 1b, the structure of the robot arm 5, and the cover portion 1b to the trough-shaped portion 1a. The method for doing so will be described in detail.

FIG. 6 is a sectional view showing in detail the structure of the gutter-shaped portion 1a, the cover portion 1b, and the interlock mechanism 100 provided on the cover portion 1b, and a partial surface view of the cover portion 1b. As shown in the figure, the trough-shaped portion 1a has a substantially semi-cylindrical structure, and an interlock mechanism provided in the cover portion 1b is provided inside both of the openings 1c to which the cover portion 1b is coupled. Lock part 17 forming a part of 100
A pair of connecting step portions 1e is formed which engages with a and 17b and connects the cover portion 1b to the gutter-shaped portion 1a. A partition plate 1p is attached in the middle of the primary propulsion pipe 1 to secure the strength of the gutter-shaped portion 1a and to separate the accommodation space for cables and hoses from the space for other purposes.

As shown in the cover surface view in the lower part of FIG. 6, the cover portion 1b is fitted with a part of the above-mentioned carrying-in / connecting device 3 related to the robot arm 5 inserted and fitted therein, as shown in the cover surface view. A hole 10 is formed, and this fitting hole 1
Protrusions 19a and 19b are formed on the inner periphery of 0.
It should be noted that the protrusions 19a and 19b are provided with ears 59a and 59b provided in association with the robot arm 5 of the carry-in / connector 3 as will be described later or as briefly described in FIG.
Are engaged, that is, caught.

A rotary key 13 having a hexagon wrench hole 11 is provided inside the fitting hole 10. The fitting hole 10 is formed by penetrating the cover portion 1b as shown in the sectional view of FIG. 6, and the rotary key 13 having the hexagon wrench hole 11 has a base portion penetrating the cover portion 1b and extending inward. A rotary shaft 14 is coaxially formed on the base of the extended rotary key 13, and the lock portions 17a and 17b are attached to the rotary shaft 14 via a link mechanism 15. When the rotary key 13 is rotated, the rotation of the lock portions 17 a and 17 b is caused by the rotation of the link mechanism 1 via the rotary shaft 14.
5, the lock mechanism 17a, 17b is configured to have a first state in which it is retracted as shown in FIG. 9 and a second state in which it is extended as shown in FIG. 10 by the action of the link mechanism 15. ing. The interlock mechanism 100
Is a generic name for all the mechanical parts provided in the cover part 1b described above, but specifically, the fitting hole 10, the hexagon wrench hole 11, the rotary key 13, the link mechanism 15, and the lock part 17a. , 17b and projections 19a, 19b.

Next, with reference to FIG. 7, the robot arm 5 which is attached to the carry-in connection device 3 and whose operation is controlled by the carry-in connection device 3 and its related mechanism will be described.

A jack 51 is attached to the lower end of the robot arm 5, and the tip of the jack 51 penetrates the lower end of the robot arm 5 to rotate the gear 55. A box 53 is provided so as to surround the tip of the jack 51 and the gear 55. A rotary cylinder 57 is attached to the gear 55, and ears 59a and 59b are formed at an end of the rotary cylinder 57 extending from the box 53, and a hexagon wrench 61 extends from the end of the rotary cylinder 57. I have put it out. The hexagon wrench 61 is to be inserted into the hexagon wrench hole 11 of the cover 1b shown in FIG. 6, and the ears 59a and 59b are the protrusions 19a and 19a of the cover 1b.
It engages with 19b.

When the hexagon wrench 61 of the robot arm 5 is inserted into the hexagon wrench hole 11 of the cover portion 1b and the hexagon wrench 61 is rotated, this rotation is performed by the robot arm 5
Hex wrench 61 to hole 11 for hex wrench, rotary key 1
3. The link mechanism 15 is transmitted by being transmitted to the link mechanism 15 via the rotary shaft 14. And this link mechanism 15
The lock portions 17a and 17b are set in a retracted first state and an extended second state as shown in FIGS. 9 and 10, respectively.

As shown in FIG. 9, the lock portion 17
The first state in which the a and 17b are retracted is a state in which the hexagon wrench 61 of the robot arm 5 is simply inserted into the hexagon wrench hole 11 of the cover portion 1b and the hexagon wrench 61 is not rotated. In the first state, the tips of the lock portions 17a and 17b are the openings 1c of the gutter-shaped portion 1a.
Since it does not exceed the line, the opening 1c of the gutter-shaped part 1a
Although it is in a state where it is not engaged with the connecting stepped portions 1e formed on both inner sides of each of the two, that is, the cover portion 1b is not connected to the gutter-shaped portion 1a, at this time, the ear portions 59a, 59b.
The protrusions 19a and 19b are engaged with each other, and as shown in FIG. 10, the second state in which the lock portions 17a and 17b are extended is such that the hexagon wrench 61 of the robot arm 5 covers the cover portion 1b.
The hexagon wrench 61 is rotated after being inserted into the hexagon wrench hole 11 of FIG.
1 is transmitted to the link mechanism 15 via the rotary key 13 and the rotary shaft 14 to rotate the link mechanism 15, whereby the lock portions 17a and 17b are extended as shown in FIG. 10, and the lock portions 17a and 17b are extended. Each tip has an opening 1c of a gutter-shaped part 1a
The line 1 is engaged with the connecting step portions 1e formed on both inner sides of the opening 1c of the gutter-shaped portion 1a, and the opening portion 1c is connected to the gutter-shaped portion 1a.

Next, the gutter-shaped portion 1 configured as described above.
A method of integrally connecting the cover portion 1b to the gutter-shaped portion 1a of the primary propulsion tube 1 using the a, the cover portion 1b, and the robot arm 5 will be described with reference to FIGS.

For example, in the state shown in FIG. 1, the robot arm 5 holds the cover portion 1b. In this state, as shown in FIG. 8, the rotary cylinder 57 of the robot arm 5 covers the cover portion 1b. Of the protrusions 19a, 19b formed on the inner circumference of the fitting hole 10
On the other hand, the ear portions 59a and 59b of the robot arm 5 are slightly rotated to be engaged and hooked, whereby the robot arm 5 holds the cover portion 1b by the ear portions 59a and 59b.

In this case, when the rotary cylinder 57 of the robot arm 5 is inserted into the fitting hole 10 of the cover portion 1b,
The hexagon wrench 61 attached to the end of the rotary cylinder 57 of the robot arm 5 is also inserted into the hexagon wrench hole 11 of the cover 1b as shown in the figure. In addition,
The ears 59a, 59 of the robot arm 5 in this case
Since the rotation of b is slight, this rotation is transferred from the hexagon wrench 61 of the robot arm 5 to the lock portions 17a and 17b via the hexagon wrench hole 11, the rotary key 13, the rotary shaft 14, and the link mechanism 15 of the cover portion 1b. Even if transmitted, the lock portion 17
a and 17b hardly operate.

As described above, the ears 59a and 59b of the robot arm 5 are connected to the protrusions 19a and 19b of the cover 1b.
When the robot arm 5 holds the cover portion 1b with certainty by engaging with and hooking with the carry-in / connect device 3 in the state shown in FIG.
The robot arm 5 is controlled to move the cover portion 1b directly below the opening 1c of the trough-shaped portion 1a, as shown in FIG. 4 just before the connection between the trough-shaped portion 1a and the cover portion 1b. This state is the state shown in FIG.

Then, as shown in FIG. 8, the cover portion 1b
5 from the state directly below the opening 1c of the gutter-shaped portion 1a.
As shown in FIG. 11, when the robot arm 5 controls the cover portion 1b to rise to fit the opening portion 1c of the gutter-shaped portion 1a and the cover portion 1b fits into the opening portion 1c of the gutter-shaped portion 1a, it is shown in FIG. Thus, the cover portion 1b is inserted into the opening portion 1c of the gutter-shaped portion 1a and fits snugly. Note that FIG.
Then, the robot arm 5 and its related members are omitted for simplification of the drawing and are not shown. However, in this state, the cover portion 1b is not connected to the gutter-shaped portion 1a, so that the robot arm 5 is not shown. 5 and its related members are still in a state of holding the cover portion 1b as shown in FIG.

When the cover portion 1b is inserted into the opening portion 1c of the trough-shaped portion 1a and is fitted in this way, the lock portions 17a and 17b of the cover portion 1b are retracted as shown in FIG. In this state, when the hexagon wrench 61 of the robot arm 5 inserted in the hexagon wrench hole 11 of the cover portion 1b is rotated under the control of the carry-in connection device 3, the hexagon wrench 61 rotates. Is
The lock parts 17a and 17b are transmitted to the lock parts 17a and 17b through the hexagon wrench hole 11, the rotary key 13, the rotary shaft 14, and the link mechanism 15, and the lock parts 17a and 17b are extended as shown in FIG. And the lock portion 17 is released.
As shown in FIG. 12, both ends of a and 17b are gutter-shaped parts 1
The gutter-like portion 1a and the cover portion 1b are securely coupled to each other by engaging with the coupling step portions 1e formed on both inner sides of the opening portion 1c of a. When the hexagonal wrench 61 is rotated to connect the gutter-shaped portion 1a and the opening 1c in this manner, the ears 59a and 59b of the robot arm 5 form the protrusions 19a and 19b of the cover portion 1b. Since it is disengaged from the engagement, after the gutter-shaped portion 1a and the cover portion 1b are coupled together, the robot arm 5 and its related members, such as the hexagon wrench 61, are moved downward from the position shown in FIG. Then, the robot arm 5 and its related members such as the hexagon wrench 61 are separated from the cover portion 1b.

The primary propulsion pipe 1 constructed by engaging the gutter-shaped portion 1a and the cover portion 1b in this manner has the lock portions 17a, 1a.
Since 7b engages with the connecting step portion 1e on the inner side of the gutter-shaped portion 1a to perform the connection, any structure including the lock portions 17a and 17b does not protrude from the outer surface of the primary propulsion pipe 1. There is no influence on the promotion of the small diameter tunnel by the primary propulsion pipe 1.

In addition, the cover portion 1b is connected to the gutter-shaped portion 1 in this manner.
After the construction of the small-diameter tunnel using the primary propulsion pipe 1 configured to be coupled to a is completed, the hexagon wrench is manually inserted into the hexagon wrench hole 11 from the surface of the cover portion 1b to rotate the cover portion 1b. Can also be manually released from the gutter-shaped part 1a.

In the above embodiment, a wrench, a hexagonal wrench hole, a rotary key, a link mechanism, etc. are used, but the present invention is not limited to these, and for example, an arbitrary operating means as a wrench, For the hexagon wrench hole and the rotary key, any engaging means, and for the link mechanism, for example, rack &
Any actuation mechanism such as a pinion can be used. Further, in the above embodiment, the protrusion 19a
Although the ear portion 59a and the ear portion 59a are projected and engaged with each other, the present invention is not limited to these. For example, one of them may be formed in a concave shape and each of them may be engaged with each other. .

[0039]

As described above, according to the present invention,
An interlock mechanism consisting of a fitting key, a protrusion, a rotary key with a wrench hole, a link mechanism, and a lock part is provided in the cover part of the split pipe divided into a gutter-shaped part and a cover part. While the holding fitting means of the carry-in connection device is hooked and the cover part is held accurately so that the cover part can be conveyed, the cover part is inserted into the opening part of the gutter-shaped part and is aligned with the engaging means of the carry-in connection device. The gutter-shaped part and the cover part are operated by engaging the actuating means and actuating the actuating mechanism to actuate the lock part to the second state to engage the lock part with the connecting step part of the gutter-shaped part. Therefore, the cover part can be securely held so as not to drop, and the cover part can be reliably connected to the gutter-shaped part by using the lock part. In addition, since the lock part engages with the step part inside the gutter-shaped part to connect, the structure including the lock part does not project from the outer surface of the primary propulsion pipe, and the influence on the propulsion by the primary propulsion pipe is prevented. Nor. Further, after the completion of the propulsion, the cover portion can be easily separated from the gutter-shaped portion by inserting the actuating means such as a wrench into the engaging means of the cover portion.

Further, according to the present invention, the holding / fitting means of the carry-in / connecting device is inserted into the fitting hole of the cover portion, the ear portion of the holding / fitting means is hooked on the projection portion, and the cover portion is held while holding the cover portion. Part to move so as to align with the opening of the gutter-shaped part to engage the operating means of the carry-in connection device with the engaging means of the cover part,
The actuating mechanism is actuated to actuate the actuating mechanism to set the lock portion to the second state, whereby the cover portion is integrally coupled to the gutter-shaped portion, and at the same time, the projection portion and the ear portion are released. Since the holding part of the carrying-in / connecting device releases the cover part, the cover part can be held while it is securely held so that it does not drop, and the lock part is used to securely join the cover part to the gutter-shaped part. can do.
In addition, since the lock part engages with the step part inside the gutter-shaped part to connect, the structure including the lock part does not project from the outer surface of the primary propulsion pipe, and the influence on the propulsion by the primary propulsion pipe is prevented. Nor. Further, after the completion of the propulsion, a wrench can be inserted into the hexagon wrench hole of the cover part to easily separate the cover part from the gutter-shaped part.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state where a primary propelling pipe, which is a split pipe according to an embodiment, is being conveyed by a carry-in / connecting device.

FIG. 2 is a diagram showing a situation in which a primary propulsion pipe composed of a gutter-shaped part and a cover part held by a carry-in connection device and a robot arm as shown in FIG. 1 is carried into a starting shaft in a small-diameter tunnel excavation, for example. Is.

FIG. 3 is a diagram illustrating a case in which the carry-in connection device and the robot arm holding the primary propulsion pipe shown in FIG. 2 are moved further downward from the position shown in FIG. 2 to directly below the opening of the trough portion of the primary propulsion pipe. It is a figure showing the state just before the completion of conveyance showing the state where the cable introduction pipe accommodating the cables and hoses is located.

[Fig. 4] After inserting the cables and hoses into the gutter-shaped part from the state immediately before the completion of conveyance shown in Fig. 3, the cover part held by the robot arm is placed directly below the opening part of the gutter-shaped part. It is the figure which has shown roughly the state just before it moves by the robot arm and then tries to join a gutter-shaped part and a cover part.

FIG. 5 is a diagram schematically showing, as a step following FIG. 4, a moment at which the gutter-shaped portion and the cover portion are joined together and a part of an interlock mechanism provided in the cover portion.

6 is a cross-sectional view showing in detail the structure of a gutter-shaped portion, a cover portion, and an interlock mechanism provided in the cover portion of the primary propulsion pipe which is the split pipe according to the embodiment shown in FIG. 1, and a partial surface of the cover portion. It is a figure.

FIG. 7 is a diagram showing a robot arm of the carry-in connection device used in the embodiment shown in FIG. 1 and a related structure thereof.

8 is a cross-sectional view showing configurations of a gutter-shaped portion, a cover portion, and a robot arm when the cover portion is moved to a position right below an opening of the gutter-shaped portion while holding the cover portion using the robot arm shown in FIG. 7. Is.

9 is a diagram showing a configuration of the link mechanism and the lock portion when the lock portion used in the embodiment shown in FIG. 1 is in the retracted first state.

10 is a diagram showing a configuration of the link mechanism and the lock portion when the lock portion used in the embodiment shown in FIG. 1 is in the extended second state.

FIG. 11 is a cross-sectional view showing a configuration of the gutter-shaped portion and the cover portion in a state where the cover portion is inserted into the opening portion of the gutter-shaped portion using the robot arm in the embodiment shown in FIG.

FIG. 12 is a view showing a state in which the gutter-shaped portion and the cover portion are combined in the embodiment shown in FIG.

[Explanation of symbols]

1 primary propulsion pipe 1a gutter 1b Cover part 1c opening 1e Connecting step 3 carry-in connection device 5 robot arm 10 Fitting hole 11 Hexagon wrench hole 13 rotary key 14 rotation axis 15 Link mechanism 17a, 17b Lock part 19a, 19b protrusion 51 jacks 57 rotating cylinder 59a, 59b Ear 61 hex wrench 100 interlock mechanism

Claims (3)

[Claims] 1. A substantially cylindrical gutter-shaped portion having two openings in the longitudinal direction, the opening being formed in the longitudinal direction, and the other, which is divided into two in the longitudinal direction. A cover part formed so as to close the opening of the gutter-shaped part, wherein the cover part holds the cover part in order to connect the cover part to the opening of the gutter-shaped part. A fitting hole formed in the cover so that the holding fitting means of the carry-in connection device for moving toward the opening of the part can be fitted, and the fitting hole provided in the inner periphery of the fitting hole. A held part formed so that the cover part can be held by a holding part provided in the holding and fitting means of the carry-in connection device fitted in the fitting hole, and a carry-in connection formed at the back of the fitting hole. When the cover part is held by the holding part of the holding and fitting means of the device, the operating hand of the carry-in connection device is Engaging means for engaging with each other, and a locking portion that operates so as to have a first state in which it is contracted and a second state in which it is extended by the operation of the operating means of the carry-in connection device via the engaging means. The gutter-shaped part has a coupling step part that engages with the lock part to integrally couple the cover part to the gutter-shaped part when the lock part is in the second state. And a split tube. 2. A method for connecting divided pipes using the divided pipe according to claim 1, wherein the cover portion of the divided pipe is connected to the gutter-shaped portion, wherein the holding fitting means of the carry-in connection device is provided in the cover portion. The cover part is held by the holding and fitting means of the carry-in connection device by inserting it into the fitting hole and hooking the holding part of the holding and fitting means of the carry-in connection device to the protrusion provided on the inner circumference of this fitting part. While moving the cover part so as to match the opening of the gutter-shaped part, and holding the cover part by the holding and fitting means of the carry-in connection device, the carry-in connection device with the cover part aligned with the opening of the gutter-shaped part. The operating means is engaged with the engaging means of the cover part, and the operating mechanism is operated by operating the operating means of the carry-in connection device engaged with the engaging means, and the lock part is operated by the operation of the operating mechanism. Set to the second state,
As a result, the lock part is hooked on the connecting step part of the gutter-shaped part to integrally connect the cover part to the gutter-shaped part, and at the same time, the catch of the projection part and the holding part is released, and the holding fitting means of the carry-in connection device is used. A method for connecting divided pipes, characterized in that the holding of the cover portion is released. 3. The method of connecting split tubes according to claim 2, wherein the holding and fitting means of the carry-in connection device is a robot arm controlled by the carry-in connection device.