JP3492930B2 - Pipe connection method and pipe connection device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for interconnecting power cable protection pipes and other pipes in a trench.
And its method.

[0002]

2. Description of the Related Art Transmission lines and communication lines are often inserted into pipes buried underground. In this type of buried pipe, generally, a large number of pipes are arranged in one excavation groove, and these pipes are mutually connected and buried. The method of burying a pipe in the prior art is as follows. That is, steel sheet piles are struck against the ground to excavate a groove. Then, lower the pipe into the trench. The pipes are arranged in parallel in, for example, three rows in the trench, and several pipes are connected to a certain length. The pipes are connected in the excavation groove by hammering a subsequent pipe into the end of the existing pipe with a hammer or the like. Next, place a spacer called a pipe pillow on the pipe, stack another three rows of pipes on the pipe pillow and lay a second stage pipe, and connect the pipes in the same way as the first stage. Connect to a certain length. The connection of the second-stage pipe is also performed by tapping the subsequent pipe with the same hammer as in the first-stage pipe. After that, the pipes are connected one after another by stacking the pipes in a predetermined number of stages through pipe pillows. Then, when the pipe has been laid in the predetermined section, the excavation trench is backfilled.

[0003]

The prior art tube burying method is a simple and reliable method and is universally practiced. However, the pipe burying method of the prior art requires a worker to enter the excavation ditch and align the pipes, or a hammer to connect the pipes, which is a heavy labor and is dangerous. It is work.

[0004] Therefore, those skilled in the art are required to develop a measure for reducing the pipe connecting work in the excavation trench as much as possible. Then, this invention pays attention to the above-mentioned problem of a prior art, and makes it a subject to develop the piping connection apparatus which can reduce the piping connection work in an excavation ditch. In addition, the present invention also aims to develop a pipe connection method that achieves the same object.

[0005]

The invention according to claim 1 for attaining the above-mentioned object is a main body part which can be hung in an excavation trench, a pipe holding means for holding a pipe, and an existing pipe. A pipe engaging means for engaging the main body with the pipe, and a pipe moving means for moving the pipe in the pipe longitudinal direction with respect to the main body, and hanging the pipe in the excavation groove while holding the pipe by the pipe holding means. are possible, engage with existing tube and the main body portion by the tube engaging means, the leading end a can be pressed at the end of the existing pipe by moving the tube by the tube moving means, the tubes predetermined position
Placed side by side on a tube pillow with a notch in the table,
The tube holding means comprises tube pillow engaging means for engaging the tube pillow.
Hold the tubes together with the tube pillow and place multiple tubes side by side on the tube pillow.
The plurality of pipes that have been
The pipe connecting device is characterized in that the tip can be pressed against the end of the existing pipe .

In the pipe connecting device according to the first aspect, the pipe connecting device is suspended in the excavation groove while the pipe is held in the main body by the pipe holding means. Then, the existing pipe and the main body are engaged by the pipe engaging means, and the pipe is moved by the pipe moving means in this state. In the pipe connecting device of the present invention, since the pipe is moved by the pipe engagement means while the existing pipe and the main body are engaged with each other, the pipe can be pressed against the existing pipe with a strong force. Therefore, pipe connection work can be performed without sieving a hammer or the like.

According to the first aspect of the present invention, a plurality of pipes are arranged side by side on a pipe pillow having notches at predetermined positions, and the pipe holding means engages with the pipe pillow. Holds the tube with the tube pillow and arranges multiple tubes on the tube pillow.
Move the pipes with the pipe moving means.
Its tip can be pressed against the end of the existing pipe.

In the pipe connecting device of the present invention, the pipe can be held together with the pipe pillow. Therefore, the work of aligning the pipes in the trench is simplified.

According to a second aspect of the present invention, the pipe pillow has a concave portion, and the pipe holding means is provided with a claw-shaped member that can be opened and closed, and the concave portion is grasped and engaged. Item 1
The pipe connecting device according to item 1.

The pipe connecting device of the present invention is provided with a claw-shaped member, and the claw-shaped member grips the concave portion of the pipe pillow and holds the pipe together with the pipe pillow.

Further, the invention according to claim 3 is in an excavation trench.
Body that can be hung on the wall and pipe holding means that holds the pipe
A pipe engaging means for engaging the existing pipe and the main body,
Equipped with pipe moving means to move the pipe in the longitudinal direction with respect to the main body
, The excavation groove with the pipe held by the pipe holding means.
It is possible to hang it inside the
Engage the installed pipe with the main body, and move the pipe with the pipe moving means.
The pipe connecting device is characterized in that the tip can be moved to press the end of the existing pipe, the pipe has a step at the end , and the pipe engaging means engages with the step. .

In the pipe connecting device of the present invention, the existing pipe and the main body are engaged with each other by utilizing the stepped portion of the pipe. The pipe connecting device of the present invention can obtain a strong engaging force with a simple structure.

In the invention according to claim 4 , the pipe engaging means has an engaging portion for engaging with a step portion of the pipe, and the engaging portion is
It is movable in the longitudinal direction of the tube and rotatable,
Further, the pipe connecting device according to claim 3 , wherein the pipe connecting device can be fixed at a predetermined position.

The pipe connecting device of the present invention has an engaging portion that engages with the step portion of the pipe, and the engaging portion is movable in the longitudinal direction of the pipe and rotatable. In the pipe connecting device of the present invention, the engaging part can be arranged near the main body part so that the engaging part does not get in the way when the device is suspended in the excavation groove. Then, the engaging part is moved to a position where it reaches the existing pipe in the excavation groove. Further, the engaging portion is rotated to bring the engaging portion into contact with the existing pipe, and the engaging portion is fixed at the position.
As a result, the engaging portion engages with the step portion of the existing pipe, and the main body portion is connected to the existing pipe.

According to the invention of claim 5 , in the excavation trench
A body part that can be hung and a pipe holding means that holds a pipe
A pipe engaging means for engaging the existing pipe and the main body,
Equipped with pipe moving means to move the pipe in the longitudinal direction with respect to the main body
, The excavation groove with the pipe held by the pipe holding means.
It is possible to hang it inside the
Engage the installed pipe with the main body, and move the pipe with the pipe moving means.
The pipe connecting device is characterized in that the tip of the pipe can be moved to press the end of the existing pipe, and the tilting means for changing the main body to the tilted posture is provided. The tilted posture is a concept including a vertical posture.

In the pipe connecting device of the present invention, since the main body can be changed to the inclined posture, when the pipe connecting device is suspended in the excavation trench, the device is inclined and the cutting beam of the excavation trench is avoided. You can

Further, the invention according to claim 6 has a support portion separated from the main body portion, and a plurality of linear members lowered from the support portion are coupled to the main body portion, and the main body portion is a support portion. And a length changing means for changing the hanging length of the linear member, and changing the hanging length of the linear member to change the posture of the main body. The pipe connecting device according to claim 5 , wherein the pipe connecting device is capable of

In the pipe connecting device of the present invention, the main body is suspended from the support by the linear member. In the pipe connecting device of the present invention, the length changing means partially changes the length of the suspended portion of the linear member. For example, half of a plurality of linear members is lengthened and the rest is shortened. Then, one of the main body parts goes up and the other part goes down.
As a result, the body part changes its posture diagonally.

Further, according to the invention described in claim 7 , a drum is provided in the supporting portion, both ends of one linear member are coupled to different positions of the main body portion, and an intermediate portion of the linear member is a drum. 7. The pipe connecting device according to claim 6 , wherein the hanging length of the linear member is changed by engagement and rotation of the drum.

In the pipe connecting device of the present invention, both ends of the linear member are connected to different positions of the main body, and the intermediate portion of the linear member is engaged with the drum. Therefore, when the drum rotates, the linear member on one end side is wound around the drum and the other linear member is unwound from the drum. As a result, the suspension length of the linear member is changed by the rotation of the drum, and the posture of the main body is changed.

Further, the invention of the pipe connecting method using the above-mentioned pipe connecting device is such that a pipe pillow having a plurality of pipes and notches is arranged in an excavation groove, and the pipes are connected while being positioned by the pipe pillow. In the pipe connecting method described above, the pipe is installed on the ground on the pipe pillow, the pipe is held together with the pipe pillow by the pipe connecting device according to any one of claims 1 to 7 , and the pipe connecting device is suspended in the excavation groove. The pipe connecting device is arranged at the end side of the existing pipe, the existing pipe and the main body are engaged with each other by the pipe engaging means, and the pipe is moved by the pipe moving means to press the tip thereof to the end of the existing pipe. The pipe connection method is characterized in that the tip of the pipe is pushed into the end of the existing pipe.

In the pipe connecting method of the present invention, the pipe is installed on the pipe pillow on the ground, and the pipe and the pipe pillow are carried into the excavation groove together with the pipe connecting device. Therefore, according to the present invention, the work of rearranging the pipes within the trench is unnecessary. Further, in the pipe connecting method of the present invention, the existing pipe and the main body are engaged by the pipe engaging means, and the pipe is moved by the pipe moving means to press the tip of the pipe against the end of the existing pipe. Since it is pushed into the end of the existing pipe, the work of swinging the hammer in the conventional excavation groove is simplified.

Further, the pipe connecting method according to the ninth aspect is
The pipe connecting method according to claim 8 , wherein the pipe connecting device is suspended in the excavation groove by a crane.

In the pipe connecting method of the present invention, since the pipe connecting device is hung in the excavation groove by the crane, the work can be performed without requiring any special device.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. In addition, in the following description, “upper and lower” is basically a state in which the pipe connecting device is hoisted horizontally, and the top side is the upper side and the ground side is the lower side. The front-rear relationship is based on the direction of the pipe held by the pipe connecting device, and the front end side of the pipe is the front side and the rear end side is the rear side.

FIG. 1 is a perspective view of a pipe connecting device according to an embodiment of the present invention. FIG. 2 is a perspective view of a pipe and a pipe pillow held by the pipe connecting device of the present invention. FIG. 3 is a perspective view showing a state in which a pipe and a pipe pillow are held and lifted by the pipe connecting device shown in FIG. FIG. 4 is a perspective view of the tube pillow. FIG. 5 is a cross-sectional view of a support portion of the pipe connection device of FIG. FIG. 6 is a front view of the tube pillow engagement device of FIG. 1.
FIG. 7: is operation | movement explanatory drawing of the pipe pillow engagement device of the pipe connection apparatus of FIG. 8: is a front view of the front-end | tip part of the pipe engagement device of the pipe connection apparatus of FIG. FIG. 9 is a front view of the end portion of the pipe engaging device of the pipe connecting device of FIG. 1. 10 to 23 are explanatory views illustrating a procedure of using the pipe connection device of FIG. 1.

In the figure, reference numeral 1 shows a pipe connecting device according to an embodiment of the present invention. The pipe connection device 1 of the present embodiment is roughly divided into a support portion 2 and a main body portion 3, a length changing device 5 is provided in the support portion 2, and a pipe pillow engagement device 6 is provided in the main body portion 3. A pipe engaging device 7 and a moving device 8 are arranged.
Further, the length changing device 5 and the wires 70 and 71 constitute an inclining means.

The supporting portion 2 functions as the length changing device 5, the geared motor 11 is attached to the center of the beam member 10, and the drums 12 are attached to both ends of the beam member 10. Is.

The beam member 10 is hollow as shown in FIG. 5, and the power transmission shaft 13 is inserted therein. Drums 12 are provided at both ends of the power transmission shaft 13, and the drum 12 rotates as the power transmission shaft 13 rotates. The central portion of the power transmission shaft 13 is engaged with the geared motor 11 via a gear train (not shown). Therefore, the drums 12 at both ends rotate in synchronization with the rotation of the geared motor 11. As will be described later, an intermediate portion of the wires 70, 71 is wound around the drum 12, and the length of the wires 70, 71 fed out is changed by the rotation of the drum 12.

On the upper part of the beam-shaped member 10, a substantially "A" -shaped hanging jig 15 is provided across the geared motor 11. The hanging jig 15 is attached to the beam-shaped member through the pin 16, and the hanging jig 15 is used for the beam-shaped member 1.
Has some freedom with respect to zero.

Two leg portions 1 are provided below the beam member 10.
7 is provided. The leg 17 has a shape in which a linear horizontal bar 18 is supported by two rod-shaped support members 19, and each horizontal bar 18 is horizontal to the beam-shaped member 10. The rod-shaped support members 19 are attached to each other at an angle of about 90 ° with respect to the beam-shaped member 10, and a gap is provided between the horizontal bars 18. The leg portions 17 are provided to support the beam-shaped member 10 and the like in a hollow state and prevent damage to each portion when the pipe connection device 1 of the present embodiment is placed on the ground.

The main body 3 has a frame 20 assembled in a rectangular shape with square pipes as a base 20, and the pipe pillow engaging device 6, the pipe engaging device 7 and the moving device 8 are arranged on the base 20. It is a thing.

The pipe pillow engaging device 6 has an engaging portion 25 in which a pair of U-shaped claw-like members 21 as shown in FIGS. 1 and 6 face each other. The claw-shaped member 21 has an upper end portion 24 and a vertical portion 26 as shown in the drawing, and a lower side portion 27 extends vertically from the vertical portion 26. And the claw-shaped member 21
Is the upper end portion 2 on the hanging portion 22 that is hung on the lower surface of the main body portion 3.
The end of 4 is fixed to the shaft. Therefore, the claw-shaped member 21
Can swing about the shaft 23. Further, the claw-shaped member 21 is provided with a gear 28 concentrically with the shaft 23, and the gears 28 of the pair of claw-shaped members 21 are fitted to each other. Therefore, the pair of claw-shaped members 21 operate in an interlocking manner.

In the pipe connecting device 1 of this embodiment, four sets of the engaging portions 25 are provided on the lower surface of the main body 3. The position of the engaging portion 25 can be understood by referring to FIG. 1 and FIG.
Two sets are provided at the front end in the longitudinal direction, and the other two sets are arranged at the center. Further, the mounting direction of the claw-shaped member 21 of the engaging portion 25 is such that the claw-shaped member 21 is opened and closed in the longitudinal direction of the main body 3, as shown in FIGS.

A link member 30 is attached to one of the gears 28 of each set of the above-mentioned claw-shaped member 21, and the link member 30 projects above the main body 3. Each link member 30 is connected to a common transmission rod 31 via a pin. The transmission rod 31 is located above the main body 3, extends in the front-rear direction of the main body 3, and has a terminal end located at the rear end of the main body 3. The structure of the transmission rod 31 is as shown in FIG. 6, and the two support members 33, which are provided on the upper portion of the main body 3,
It is inserted through 34 and is movable in the longitudinal direction. A stepped spring locking portion 35 is provided near the tip of the transmission rod 31.
Is provided, and a spring 36 is attached between the spring locking portion 35 and the front support member 33 with the transmission rod 31 as a core. The spring 36 constantly biases the transmission rod 31 forward.

A handle 38 is provided at the end of the transmission rod 31, and a short pipe 40 is mounted near the handle 38. The pipe 40 is provided to partially thicken the transmission rod 31.

Further, the rear support member 34 is shown in FIG.
An opening 42 as shown in d) is provided. As shown in FIG. 6D, the opening 42 has a shape in which a large diameter hole 41 and a narrow elongated hole 43 are combined. Here, the diameter of the large-diameter hole 41 is a size that allows the pipe 40 to be inserted, and the width of the elongated hole 43 is a size that allows a narrow portion of the transmission rod 31 to be inserted but cannot pass through the pipe 40. Is.

When the transmission rod 31 is moved backward,
The link member 30 that engages with the transmission rod 31 swings and falls rearward to rotate the gear 28. Then, one of the claw-shaped members 21 integrated with the gear 28 swings around the pin 23. Further, by the rotation of the gear 28 described above, the other gear 28 fitted thereto is rotated, and the other claw-shaped member 21
Also swings around the pin 23. Therefore, the claw-shaped member 21 operates in an interlocking manner and assumes a closed posture as shown in FIGS. 6 and 7B. On the other hand, when the transmission rod 31 is moved forward, the link member 30 swings in the direction opposite to the above and falls to the front side, and the gear 28 is rotated in the opposite direction. The member 21 opens.

The above-mentioned movement of the transmission rod 31 is performed by the transmission rod 31.
This is done by operating the handle 38 provided at the end of the. In this embodiment, the support member 34 is provided with the opening 42 to which the large diameter hole 41 and the narrow elongated hole 43 are connected, and the transmission is performed. Since the large diameter portion formed by the pipe 40 is provided on the distal end side of the rod 31, the transmission rod 31 stops at a predetermined position, and the claw-shaped member 21 has a completely opened posture as shown in FIG. 7 (a). , (2), the two positions are completely closed. That is, when the handle 38 is operated upward so that the transmission rod 31 is aligned with the large diameter hole 41 of the support member 34, the pipe 40 of the transmission rod 31 can pass through the large diameter hole 41.
Is moved forward by the biasing force of the spring 36 and is stabilized. At this time, as described above, the claw-shaped member 21 opens. When the handle 38 is gripped, the transmission rod 31 is pulled backward against the spring 36, and the handle 38 is pushed down to match the transmission rod 31 with the long hole 43, the pipe 40 cannot be inserted through the long hole 43. The end surface of the pipe 40 comes into contact with the surface of the support member 34, and the transmission rod 31 is stopped in a state of being pulled backward. At this time, as described above, the claw-shaped member 21 is closed.

The pipe engaging device 7 is provided on both side surfaces of the main body 3, and is composed of a pipe 45, an insertion rod 46 and an engaging portion 47. That is, the pipe 45 has a length equal to that of the main body 3, and is integrally fixed to both side surfaces of the main body 3. A clamp 50 is provided at the rear end of the pipe 45 as shown in FIGS. 1 and 9, and by rotating the handle 51, the rear end of the pipe 45 is tightened to reduce the inner diameter.

The insertion rod 46 is a rod longer than the pipe 45 described above, and has a handle 59 attached to its rear end and an engaging portion 47 attached to its tip. The engaging portion 47 is shown in FIG.
As shown in FIG. 8, the member has a slightly thin tip when viewed from the front. The width of the side surface of the engaging portion 47 is uniform. An arc-shaped contact member 48 is provided on the inner side surface of the engaging portion 47. The curvature of the contact member 48 is equal to the curvature of the outer diameter of the pipe to be connected.

The insertion rod 46 is inserted into the pipe 45, and the insertion rod 46 has a degree of freedom with respect to the pipe 45 in the axial direction and the rotation direction. Further, by tightening the clamp 50, the insertion rod 46 loses freedom, and the insertion rod 46 and the engaging portion 47 integrated with the insertion rod 46 are fixed both axially and rotationally.

The moving device 8 includes a cylinder 53 and a press-fitting plate 5.
It is a combination of 5. The cylinder 53 is a normal pneumatic or hydraulic cylinder. In this embodiment, three cylinders 53 are attached to the upper surface of the main body 3. Compressed air or hydraulic oil is supplied to the cylinder 53 via a hose 54. On the other hand, the press-fitting plate 55
Is a member having a substantially circular shape, and the front has a slightly protruding shape. The front protruding portion of the press-fitting plate 55 is a portion that enters the tube 80 to be connected. Press-fitting plate 5
The overall outer diameter of 5 is larger than that of the tubes to be connected.

The press-fitting plates 55 are supported by slide members (not shown), respectively, and are movable in the longitudinal direction of the main body 3. The slide members move independently, and the rod 56 of the cylinder 53 is connected to each slide member. Therefore, by expanding and contracting the rod 56 of the cylinder 53, the press-fitting plate 55 moves back and forth in the longitudinal direction.

In addition, the main body 3 has three frame members 60,
61 and 62 are provided. Three frame bodies 60, 61,
Of the 62, the former two have the same shape. And the frame 6
0 and 61 are both near the tip and are provided downward at positions near both side surfaces of the main body.

On the other hand, the frame body 62 is provided downward at the rear end of the main body. The three frame bodies 60, 61, 6 described above
The heights of 2 are the same. Frame 60, 61, 62
There are two roles, and one of them is to support the main body portion 3 in a hollow manner and prevent damage to each portion when the pipe connecting device 1 of the present embodiment is placed on the ground. The other role is a function only in the frame bodies 60 and 61 of the former two, and is to contact a part of the tube pillow to stabilize the tube pillow.

The main body portion 3 is suspended from the support portion 2 by two wires (linear members) 70 and 71. Here, the paths of the wires 70 and 71 are unique to this embodiment. That is, both ends of each wire 70, 71 are respectively coupled to the front and rear positions in the longitudinal direction in the vicinity of the side portion of the main body, as shown in FIG. The intermediate portions of the wires 70 and 71 are both drums 1 of the support portion 2.
It is wound in two. The number of windings of each wire 70, 71 with respect to the drum 12 is about 5 to 10 times, and there is no slip between the wires 70, 71 and the drum 12. Therefore, the main body 3 is mechanically composed of four support points 75, 76, 77,
It is connected to the wires 70 and 71 at 78, and each supporting point 75,
It is suspended by four wires between 76, 77, 78 and the support portion 2. And the drum 1 of the support 2
When 2 rotates, the length of the wire between each support point 75, 76, 77, 78 and the support 2 changes. Focusing on the single wire 70, the wire between the front support point 75 and the drum 12 is wound by rotating the drum 12 to one side, and the same amount of wire is wound on the drum 12.
And the support point 76 on the rear side.

Next, the shape of the pipe 80 and the pipe pillow 85 connected by the pipe connecting device 1 of the present embodiment will be described.
The tube 80 is, for example, a power cable protection tube, and the material thereof is, for example, FRP (fiber reinforced plastic). A pipe joint 81 for connection with another pipe is attached to one end of the pipe 80 in advance. Therefore, one end of the pipe 80 is thicker than the other part, and a step 82 is provided at the boundary. Further, a finishing surface 83 is provided on the other end side of the pipe 80.

On the other hand, the tube pillow 85 is formed by injection molding of synthetic resin, and has three arcuate notches 86 on the upper and lower surfaces. The notch serves as a contact surface with the tube 80, and its radius is substantially equal to the outer diameter of the tube 80 described above. Also, the notch 86
There is a horizontal part 88 between them. The inside of the tube pillow 85 is stolen. Therefore, the upper and lower contact surfaces are
Although a wall-shaped member exists over the entire width of 5, the other portions have both sides largely recessed in the thickness direction, and a recess 89 is formed.

When connecting the pipe 80, the pipe pillow 85
The pipes 80 are positioned relative to each other in the horizontal direction and the height direction, but when the pipes 80 are stacked at several heights, the pipe 80 located at the bottom is in the height direction with the lower pipe 80. Since it is not necessary to perform positioning, the tube pillow has a lower notch shape. In the drawings below FIG. 15, 8
The tube pillow with the number 4 has a shape without the above-mentioned notch on the lower side.

Next, a method of using the pipe connecting device 1 of the present embodiment will be described by following a pipe connecting procedure. When using the pipe connection device 1 of the present embodiment, first, the pipe 80 and the pipe pillow 85 are assembled in a predetermined positional relationship on the ground. That is, as shown in FIG. 10, the tubes 80 are engaged with the respective cutout portions 86 of the tube pillow 85, and the tubes 80 are stacked with the tube pillow 85 interposed therebetween. The stacking height of the tubes is arbitrary. This work is pipe 8
0 and the tube pillow 85 may be placed directly on the ground, or may be carried on a truck bed or the like. When the pipes 80 are loaded on the truck, it is convenient to assemble the pipes 80 and the pipe pillows 85 in a predetermined positional relationship in advance.

Next, as shown in FIG. 11, the pipe connecting device 1 of this embodiment is lifted by the hook 87 of the crane. The hook 87 is locked to the tip portion of the substantially "A" shaped hanging jig 15. Then, the pipe connecting device 1 is positioned right above the pipe 80 or the like. At this time, the wires 70, 71 connecting the main body 3 and the support 2 have substantially the same length (suspension length) between the support points 75, 76, 77, 78 and the support 3. , The pipe connection device 1 is a wire 70, 7 evenly stretched
1 keeps horizontal posture. In addition, the pipe pillow engaging device 6
The engaging portion 25 is in a state where the claw-shaped member 21 is opened as shown in FIG.

Subsequently, as shown in FIG. 12, the pipe connecting device 1 is lowered and positioned so that the main body portion 3 holds the uppermost pipe 80. At this time, in the expanded portion of each claw-shaped member 21,
Make sure that the horizontal part 88 of the upper surface of the tube pillow 85 is located.
At this time, the vertical member 65 of the front frames 60 and 61 is
It comes into contact with the back side of the tube pillow 85.

Then, the handle 38 of the tube pillow engaging device 6 is manually pulled backward to retract the transmission rod 31, and the claw-shaped member 21 is closed. As a result, as shown in FIG. 7B, the lower side portion 27 of the claw-shaped member 21 wraps around the recess 89 of the tube pillow 85, and the horizontal portion 88 of the tube pillow 85 is gripped and engaged. Then, the handle 38 is manually pushed down to move the transmission rod 31 to the long hole 4 of the support member 34.
Move to position 3. As a result, the transmission rod 31 is fixed in the front-rear direction and the claw-shaped member 21 is maintained in the closed state.

Further, the pipe engaging device 7 is manually operated to bring the engaging portion 47 into contact with the front end of the pipe 80. Further cylinder 5
The rod 56 of No. 3 is contracted, the press-fitting plate 55 is moved forward, and the press-fitting plate 55 is brought into contact with the rear end portion of the pipe 80. Then, the hook 87 of the crane is raised to lift the pipe connecting device 1 as shown in FIG. At this time, the claw-shaped member 21 of the pipe pillow engaging device 6 of the pipe connecting device 1 engages while holding the concave portion 89 of the pipe pillow 85, and the pipe 80 is placed on the pipe pillow 85. Therefore, the pipe connection device 1 rises while holding both the pipe 80 and the pipe pillow 85. The state when the pipe connecting device 1 is hung up while holding the pipe 80 and the pipe pillow 85 is as shown in FIG.

Then, the pipe connecting device 1 holding the pipe 80 and the pipe pillow 85 is suspended in the excavation groove 91. Here, a plurality of horizontal beams called cut beams 92 are provided at the opening of the excavation groove 91, and the gap between the cut beams 92 is narrow. On the other hand, in the pipe connection device 1 of the present embodiment, the main body 3
Is changed to an inclined posture and passes through the gap of the cross beam 92.

That is, as shown in FIG. 14, after the pipe connecting device 1 is lifted, the geared motor 1 provided on the support portion 2
1 is started, and the drums 12 arranged at both ends are rotated.
In the case of this embodiment, the drum 12 is rotated to the right. Since the intermediate portion of the wires 70 and 71 is wound around the drum 12, one end side of the wire 70 is wound around the drum 12 and the other end side is paid out. More specifically, the wire between the front support point 75 and the drum 12 is wound up to reduce the hanging length of the portion, and the wire is paid out between the rear support point 76 and the drum 12. The hanging length of the portion is increased. Similarly, the wire between the support point 77 and the drum 12 is wound up to reduce the suspension length of the relevant portion, and the wire is paid out between the support point 78 and the drum 12 to increase the suspension length of the relevant portion. To do.

As a result, the supporting points 75 and 77 and the drum 12 are
The distance between the support points 76, 78 and the drum 12 is increased, and the main body 3 is inclined as a whole. In the present embodiment, since the left and right drums 12 rotate synchronously, both the front end and the rear end of the main body part 3 maintain the horizontal posture, and the front end side moves upward and the rear end side Will move down. That is, in the present embodiment, the suspension length between the front support points 75 and 77 and the drum 12 is reduced by rotating the left and right drums 12, but the left and right drums 12 rotate in synchronization, so The amount of suspension length reduction between any two support points 75, 77 and the drum 12 is the same. Therefore, the distance between the support point 75 and the drum 12 and the distance between the support point 77 and the drum 12 are always equal, and the straight line connecting the support points 75 and 77 is kept horizontal. Similarly, by rotating the left and right drums 12,
Although the suspension length between the rear support points 76 and 78 and the drum 12 increases, the left and right drums 12 rotate synchronously, so the suspension between the two front support points 76 and 78 and the drum 12 is performed. The amount of increase in length is the same, and the support points 76,
The straight line connecting 78 remains horizontal. Therefore, as mentioned above,
The front end and the rear end of the main body part 3 maintain a horizontal posture, the front end side moves upward, the rear end side moves downward, and the main body part 3 is entirely inclined.

In the pipe connecting device 1 of this embodiment, both ends of the wires 70 and 71 are connected to the main body portion 3 and the intermediate portion thereof is engaged with the drum 12, so that the hanging length on the front side can be reduced. The amount of decrease is equal to the amount of increase in the suspension length on the rear side. Therefore, although the main body 3 is inclined by the rotation of the drum 12, the center position of the main body 3 before and after the inclination is not largely changed.

As a result of the main body 3 being in the inclined posture in this way, the projected area of the main body 3 is reduced and the main body 3 can pass through the gap of the beam 92 as shown in FIG.

When the main body 3 is tilted, the front and rear of the pipe 80 are supported by the engaging portion 47 and the press-fitting plate 55, so that the pipe 80 does not move.

When the pipe connecting device 1 passes through the cross beam 92, the geared motor 11 is rotated in the reverse direction, the drum 12 is rotated in the direction opposite to the previous direction, and the supporting points 75, 76, 7 are respectively rotated.
The distance between 7, 78 and the drum 12 is returned evenly, and the pipe connection device 1 is returned to the horizontal posture as shown in FIG.

Then, as shown in FIG. 17, the pipe 80 which has been carried in this time is arranged on the rear end of the existing pipe 93 and on the previously connected pipe 80 '. More specifically, the pipe pillow 85 ′ of the pipe 80 ′ previously connected and the pipe pillow 85 that has been loaded this time are matched, and the pipe connection device 1 is suspended.

Next, the pipe engaging device 7 is manually operated, and as shown in FIG.
18, the engaging portion 47 is provided with the step portion 8 at the rear end portion of the existing pipe 80 '.
Engage 2 '. More specifically, the handle 51 of the pipe engaging device 7 is rotated to release the clamp 50, and the handle 59
Is pushed to move the engaging portion 47 forward, and further the grip 59 is rotated to bring the abutting member 48 of the engaging portion 47 into contact with the position of the existing pipe 80 ′ in the vicinity of the pipe joint 81 ′. And the engaging portion 4
The rear end surface of 7 is engaged with the step portion 82 'of the pipe joint 81'. When the positioning of the engaging portion 47 is performed in this manner, the handle 51 is rotated to tighten the clamp 50, and the insertion rod 4
6 is fixed to fix the position of the engaging portion 47. as a result,
The existing pipe 80 ′ and the main body portion 3 are engaged with each other via the engaging portion 47.

Then, the rod 56 of the cylinder 53 is contracted, the press-fitting plate 55 is advanced, and the tube 80 is pushed. Here, in the present embodiment, since the existing pipe 80 ′ and the main body part 3 are engaged with each other via the engaging portion 47, the reaction force of the cylinder 53 is applied to the existing pipe 80 ′, and the pipe The pipe 80 held by the connecting device 1 advances with respect to the main body 3, and the tip thereof is pressed against the rear end of the existing pipe 80 ′. As a result, the tip of the pipe 80 held by the pipe connecting device 1 is pushed into and connected to the pipe joint 81 ′ at the end of the existing pipe 80 ′. In the movement work of the pipe 80 described above, all the pipes 80 held in the pipe connecting device 1 may be pushed in at one time by operating the plurality of cylinders 53 at a time, but the pipes 80 may be operated by operating the cylinders 53 one by one. It is recommended to connect one by one.

Subsequently, the pipe engaging device 7 is manually operated to
As shown in 0, the engaging portion 47 is separated from the step portion 82 ′ of the existing pipe 80 ′ and returned to the original position. Then, the pipe pillow engaging device 6 is manually operated to open the engaging claws 21 as shown in FIG.
Open up. Further, the rod 56 of the cylinder 53 is extended and the press-fitting plate 55 is separated from the rear end of the tube 80. Then, the hook 87 of the crane is raised to return the pipe connecting device 1 to the ground. The main body 3 is tilted when the pipe connecting device is returned to the ground and when passing through the cross beam 92.

After that, the above steps are sequentially repeated to connect the pipe to a predetermined length, and then the excavation groove 91 is backfilled.

In the embodiment described above, the wire is used as the linear member. However, in the present invention, the linear member is not limited to the wire, and for example, a chain may be adopted instead of the wire.

In this embodiment, the drum 12 is attached to both ends of the power transmission shaft 13, which is the rotating shaft.
For example, a drum may be provided in the middle of the power transmission shaft, and the hanging length of the linear member may be changed by three or more drums. That is, in the above embodiment, the configuration in which the main body is suspended at four support points is illustrated. However, for example, in addition to the above configuration, two other support points are provided on the center line of the main body. Then, both ends of the separately prepared wire are connected to the supporting points, and the middle part of the wire is engaged with the drum provided in the middle. Then, the three drums are synchronously rotated to tilt the main body. In this way, the configuration in which the main body is suspended at the support points exceeding four points has the effect of stabilizing the posture of the main body, although there are complaints that the route of the wire is complicated.

Conversely, it is also possible to provide only one drum and engage a plurality of wires with the drum.

Further, in the above-described embodiment, the drums 12 are attached to both ends of the single power transmission shaft 13 and the two drums are rotated in synchronization. By controlling, it is possible to rotate the drum synchronously.

In the above embodiment, both ends of one wire are connected to the main body and the middle part is engaged with the drum. However, one end of the wire is connected to the drum like a normal winch, The other end may be joined to the body.

In the previous embodiment, the support portion 2 and the main body portion 3 are mechanically suspended by four wires,
The suspension length of these four wires was changed to incline the main body. In the above embodiment, the amount of change in the suspension length on the front side and the amount of change in the suspension length on the rear side are the same. According to the configuration of the above-described embodiment, there is a peculiar effect that the amount of change in the center position of the main body before and after the inclination is small. However, the present invention is not limited to this configuration, and the amount of change in the suspension length on the front side may be different from that on the rear side. For example, a configuration may be adopted in which the support portion and the rear portion of the main body portion are connected by a rod, only the front portion of the main body portion is connected by a wire, and only the length of the front wire is increased or decreased.

In this embodiment, the pipe pillow engaging device 6 and the pipe engaging device 7 are manually operated, but they may be operated by utilizing hydraulic pressure or air pressure.

[0075]

In the pipe connecting device according to the first aspect of the invention, the pipe is held by the pipe holding means and hung in the excavation groove, and the pipe engaging means engages the existing pipe with the main body.
In this state, the tubes are moved by the tube moving means to connect the tubes. When the pipe connecting device of the present invention is used, it is not necessary to wield a hammer or the like in the excavation groove, and the work is extremely easy and safe.

Further, in the pipe connecting device according to claim 1 ,
Since the pipe can be held together with the pipe pillow, the work of aligning the pipes in the excavation groove is omitted, and work efficiency is further increased,
And it's easy and safe.

Further, in the pipe connecting device according to the second aspect , since the concave portion of the pipe pillow is grasped by the claw-shaped member, the pipe pillow is securely fixed and the safety is high.

In the pipe connecting device according to the third aspect ,
Since the existing pipe and the main body are engaged using the stepped portion of the pipe,
With a simple structure, a strong engaging force can be obtained, and there is an effect that the press-fitting of the pipe is ensured.

Further, in the pipe connecting device according to the fourth aspect ,
It has an engaging portion that engages with the step portion of the pipe, and since the engaging portion is movable in the longitudinal direction of the pipe and rotatable,
When the device is suspended in the trench, the engaging part can be placed near the body so that it does not get in the way. Further, the work of engaging the main body portion and the existing pipe in the excavation groove is easy, and the work efficiency is high.

In the invention according to claim 5 , since the main body can be changed to the inclined posture, when the pipe connecting device is suspended in the excavation trench, the device is inclined and the cutting beam of the excavation trench is avoided. be able to.

Furthermore, the pipe connecting device according to the sixth aspect of the present invention has an effect that the main body can be tilted with a simple structure.

The pipe connecting device according to the seventh aspect realizes a realistic structure of the tilting means, and has an effect that the posture of the main body can be surely changed while having a simple structure.

Further, the pipe connecting method according to claim 8 is
There is no need to rearrange the pipes in the excavation groove, and simplification of the conventional wiping work of the hammer in the excavation groove,
High safety. Further, according to the pipe connecting method of the present invention, there is little dirt on the worker, and the work can be carried out comfortably.

In addition, the pipe connecting method according to the ninth aspect has an excellent effect that the pipe connecting device is hung in the excavation groove by the crane, so that the work can be performed without requiring a special device.

[Brief description of drawings]

FIG. 1 is a perspective view of a pipe connecting device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a pipe and a pipe pillow held by the pipe connecting device of the present invention.

3 is a perspective view showing a state in which a pipe and a pipe pillow are held and lifted by the pipe connecting device shown in FIG.

FIG. 4 is a perspective view of a tube pillow.

5 is a cross-sectional view of a supporting portion of the pipe connecting device of FIG.

6 is a front view of the tube pillow engagement device of FIG. 1. FIG.

7 is an operation explanatory view of the pipe pillow engaging device of the pipe connecting device of FIG. 1. FIG.

8 is a front view of the tip end portion of the pipe engagement device of the pipe connection device of FIG. 1. FIG.

9 is a front view of a distal end portion of the pipe engagement device of the pipe connection device of FIG. 1. FIG.

FIG. 10 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1.

FIG. 11 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1.

FIG. 12 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1.

FIG. 13 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1.

FIG. 14 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1.

FIG. 15 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1.

16 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1. FIG.

FIG. 17 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1.

FIG. 18 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1.

FIG. 19 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1.

FIG. 20 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1.

FIG. 21 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1.

22 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1. FIG.

FIG. 23 is an explanatory diagram illustrating a procedure of using the pipe connection device of FIG. 1.

[Explanation of symbols]

1 Pipe connection device 2 Support 3 main body 5 Length changing device 6 Tube pillow engaging device 7 Pipe engagement device 8 mobile devices 10 Beam members 12 drums 21 Claw-shaped member 47 Engagement part 48 Abutment member 53 cylinders 55 Press-fitting plate 70,71 wire (linear member) 75,76,77,78 Support points

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Osamu Ohno 3-3-22 Nakanoshima, Kita-ku, Osaka City, Kansai Electric Power Co., Inc. (72) Teruo Yamashita 3-32-22 Nakanoshima, Kita-ku, Osaka Kansai Electric Power Co., Inc. Co., Ltd. (72) Inventor Mitsunori Inoue 3-3-22 Nakanoshima, Kita-ku, Osaka City Kansai Electric Power Co., Inc. (72) Inventor Yoshiaki Murakami 2-9-18 Honjo-higashi, Kita-ku, Osaka City Kanden Kogyo Co., Ltd. (72) Inventor Shoji Mukaigawa, 9-18, Honjo Higashi 2-chome, Kita-ku, Osaka City, Kanden Kogyo Co., Ltd. (72) Inventor Keisuke Fukuoka, 12-12 Kitahorie, Nishi-ku, Osaka City Kurimoto Iron Works Co., Ltd. 72) Inventor Chiaki Ogawa 1-12-19 Kitahori, Nishi-ku, Osaka City Kurimoto Steel Works Co., Ltd. (56) References JP-A-5-231567 (JP, A) JP-A-7-190252 (JP, A) (58)査the field (Int.Cl. ^7, DB name) F16L 1/024 E02B 9/06 E02F 5/10 F16L 1/038 H02G 1/06 311

Claims (9)

(57) [Claims] 1. A body part that can be hung in an excavation trench,
The pipe holding means for holding the pipe, the pipe engaging means for engaging the existing pipe with the main body portion, and the pipe moving means for moving the pipe in the pipe longitudinal direction with respect to the main body portion are provided. The pipe can be hung in the excavation groove while being held, the existing pipe and the main body are engaged by the pipe engaging means, and the pipe is moved by the pipe moving means so that the tip thereof is the end of the existing pipe. Can be pressed into place and the pipe has a notch in place.
A plurality of tubes are arranged side by side on the scraped tube pillow.
A tube pillow engaging means for engaging the tube pillow,
Hold the tubes and pipe multiple tubes arranged side by side on the tube pillow
The pipe is moved by the moving means so that its tip is the end of the existing pipe.
A pipe connecting device characterized in that it can be pressed to the end . 2. A tube pillow has a recess, the tube pillow engagement means, the pipe of claim 1, provided with an openable claw-shaped member and wherein the engaging grab the recess Connection device. 3. A body part that can be hung in an excavation trench,
Engages the existing tube and body with the tube holding means that holds the tube
The pipe engaging means and the pipe to the main body in the longitudinal direction of the pipe.
A pipe moving means for moving the pipe,
It is possible to hang it in the excavation groove while holding the
The existing pipe and the main body are engaged with each other by the pipe engaging means,
The pipe is moved by the moving means so that its tip is the end of the existing pipe.
A pipe connecting device , which can be pressed to an end, a pipe has a step at a distal end , and a pipe engaging means engages with the step. 4. The pipe engaging means has an engaging portion that engages with a step portion of the pipe, and the engaging portion is movable in the longitudinal direction of the pipe and rotatable, and further has a predetermined shape. The pipe connecting device according to claim 3 , wherein the pipe connecting device can be fixed at a position. 5. A body part that can be hung in an excavation trench,
Engages the existing tube and body with the tube holding means that holds the tube
The pipe engaging means and the pipe to the main body in the longitudinal direction of the pipe.
A pipe moving means for moving the pipe,
It is possible to hang it in the excavation groove while holding the
The existing pipe and the main body are engaged with each other by the pipe engaging means,
The pipe is moved by the moving means so that its tip is the end of the existing pipe.
A pipe connecting device comprising an inclining means that can be pressed to an end and that changes a main body portion to an inclined posture. 6. A support section separated from the main body section, and a plurality of linear members lowered from the support section are coupled to the main body section, and the main body section is hung from the support section via the linear member. It has a length changing means which is lowered and changes the hanging length of the linear member, and the hanging length of the linear member can be changed to change the posture of the main body. 5. The pipe connecting device according to item 5 . 7. The support is provided with a drum, and both ends of one linear member are coupled to different positions of the main body, and an intermediate portion of the linear member engages with the drum, and the drum is rotated by the rotation of the drum. The pipe connecting device according to claim 6 , wherein the hanging length of the linear member is changed. 8. A pipe connecting method in which a pipe pillow having a plurality of pipes and a cutout is arranged in an excavation groove, and the pipes are connected by connecting the pipes in a state of being positioned by the pipe pillow. Then, the pipe is held together with the pipe pillow by the pipe connecting device according to any one of claims 1 to 7 , the pipe connecting device is suspended in the excavation groove, and the pipe connecting device is arranged on the end side of the existing pipe, The existing pipe and the main body are engaged with each other by the pipe engaging means, and the pipe is moved by the pipe moving means to press the tip of the pipe against the end of the existing pipe to push the tip of the pipe into the end of the existing pipe. And the pipe connection method. 9. The pipe connecting method according to claim 8 , wherein the pipe connecting device is suspended in the excavation groove by a crane.