JPH08178128A - Pipe joining equipment - Google Patents

Abstract

(57) [Summary] [Purpose] In a pipe joining device, a push ring pusher is made to function with a simple configuration. [Structure] A push wheel setter 42 having a recess 50 into which a polygonal push wheel 9 fitted in the insertion slot 4 can be fitted, and a push wheel pusher capable of pushing the push wheel 9 toward the push wheel setter 42 by the force of a spring 65. And 68. The push wheel setter 42 is rotated to match the contours of the recess 50 with the push wheel 9, so that the push wheel pusher 68 allows the push wheel 9 to enter the recess 50. Moreover, the push wheel setter 42 is rotated to rotate the push wheel setter 42 and the bolt hole 13 of the push wheel 9 and the flange 7 of the receiving port 2.
The bolts 10 passed through are aligned with each other in the circumferential direction.
The cylinder device 22 causes the push wheel setter 42 to move in the direction of approaching the flange 7 against the force of the spring 65.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joining apparatus,
In particular, the annular sealing material arranged between the receiving end of one pipe and the inserting end of the other pipe inserted into this receiving end is compressed by a push ring bolted to the flange at the opening end of the receiving end. And a pipe joining device for a so-called mechanical type pipe joint.

[0002]

2. Description of the Related Art FIGS. 7 and 8 show the structure of such a known mechanical type pipe joint. Here, a receiving port 2 is formed at an end of one pipe 1 connected to each other, and an insertion port 4 to be inserted into the receiving port 2 is formed at an end of the other pipe 3. A tapered sealing material pressure contact surface 5 is formed on the inner periphery of the opening end of the receiving port 2, and an inner peripheral surface 6 is formed on the inner side of the sealing material pressure contact surface 5. Further, a flange 7 is formed on the outer periphery of the opening end of the receiving port 2.

The insertion port 4 is inserted to the inside of the inner peripheral surface 6, and an annular seal member 8 is arranged between the pressure contact surface 5 of the receiving port 2 and the outer peripheral surface of the insertion port 4. A push ring 9 is fitted on the outer periphery of the insertion slot 4 at a position away from the receiving slot 2.
A plurality of T-head bolts 10 in the pipe axial direction passing through the flange 7 of the receiving port 2 and the push ring 9 are provided in the circumferential direction of the pipe, and nuts 11 are screwed onto the respective T-head bolts 10, whereby the push ring 9 is attached to the flange 7. To be joined. 12 is the head of the bolt 10. As shown in FIG. 8, the push ring 9 is formed in a polygonal shape corresponding to the number of T-head bolts 10. 13 is the bolt hole.

In this way, the sealing material 8 is pressed by the push ring 9, and the sealing material 8 is pressed against the sealing material pressing surface 5 and the insertion port 4.
A predetermined sealing function is exerted between the receiving opening and the insertion opening by being compressed with the outer peripheral surface.

When joining such a pipe joint, the insertion port 4 in which the sealing material 8 and the push ring 9 have been fitted beforehand is inserted into the inside of the receiving port 2, and the push ring 9 is fixed to the bolt 10 and the nut 11. The sealing material 8 is pressed between the pressure contact surface 5 and the outer surface of the insertion port 4 to be compressed by being joined to the flange 7 by and.

Recently, an apparatus has been proposed, for example, in Japanese Patent Application No. 6-221195, in which the push ring can be attached to the receiving flange by mechanical force without the need for manual labor. Hereinafter, this device will be described in detail with reference to FIGS.

As shown in the figure, a frame 28 is formed by joining a first plate 21 along a cross-sectional direction of the tubes 1 and 3 to a second plate 23 by a cylinder device 22. Since the plates 21 and 23 are each formed in a downward U-shape, the frame 28 can be placed over the tubes 1 and 3 in a state of being placed on the tubes 1 and 3 in the horizontal direction from above. is there.

The pipes 1 and 3 are thus frame 28
Before being placed, the insertion port 4 is inserted inside the receiving port 2, the sealing material 8 and the polygonal push ring 9 are externally fitted to the insertion port 4, and the T-head bolt 10 Is in a state of being passed through the bolt hole of the flange 7 of the receiving port 2.

9 and 10 show the first plate 21 and its periphery in detail. First plate as described above
21 is formed in a downward facing U-shape, and its cutout portion 30
So that the socket 2 of the pipe 1 enters the socket 2 from above.
It can be placed on. And this first plate
The first plate 21 is supported by the tube 1 by the roller 32 at the tip of the bracket 31 attached to the tube axial direction 31 contacting the outer surface of the top of the tube 1.

The first plate 21 is passed through the flange 7 when the first plate 21 is supported by the tube 1 and is guided by the roller 32 to move toward the flange 7. A holding member 34 capable of engaging with the head 12 of the T-head bolt 10 is provided for each T-head bolt 10. The holding member 34 at the position corresponding to the lower part of the tube 1 is
The first plate 21 is attached to the tip of the swivel arm 35 so as not to interfere with the receiving opening 2 when the first plate 21 is placed on the receiving opening 2 from above.

The cylinder device 22 has three cylinders along the circumferential direction of the pipe 1.
The second plate 23 is installed at a certain position, and the second plate 23 is moved toward the flange 7 by the shortening operation of the cylinder devices 22 with the holding member 34 engaged with the head 12 of the T-head bolt 10. Moving. 36 is a potentiometer for detecting the amount of movement.

FIGS. 9, 11 and 12 show the second plate 23 and its periphery in detail. The second plate 23 is also formed in a downward U-shape, and the notch 38 is formed so that the insertion port 4 of the tube 3 is inserted therein. This second
A plate radial bracket 39 is attached to the plate 23, and a roller provided at the lower end of the bracket 39
The contact of 40 with the top of the tube 3 allows this second plate 23
Are supported by the tube 3.

The second plate 23 is provided with a crescent-shaped push wheel setter 42 arranged along the outer periphery of the upper half of the tube 3. A crescent-shaped groove 43 is formed on the side surface of the push wheel setter 42 along the circumferential direction, and a plurality of rollers 44 rotatably attached to the second plate 23 are fitted into the groove 43 in the circumferential direction. By that, push ring setter
42 is arranged concentrically with the tubes 1 and 3, and
It is rotatable in the circumferential direction over a certain angle range. An arc-shaped rack 46 is formed in a certain range on the outer circumference of the push wheel setter 42. A motor 47 is attached to the second plate 23, and a pinion 48 driven by the motor 47 meshes with the rack 46 so that the push wheel setter 42 is rotationally driven in the circumferential direction. There is.

The push wheel setter 42 is provided with a recess 50 having a shape matching the outer shape of the polygonal push wheel 9. The polygonal push ring 9 is stationary at an arbitrary angle in the circumferential direction in a state where the push ring 9 is still fitted to the insertion opening 4. Therefore, by rotating the push wheel setter 42 as described above, the angle of the recess 50 of the push wheel setter 42 can be matched with the angle of the push wheel 9.

A push-wheel pusher 51 is provided to push the push ring 9 into the recess 50 when the two angles match each other. That is, as shown in FIGS. 9 and 10, horizontal notches 52 are provided at positions on both sides of the first plate 21 that do not interfere with the flange 7, and the horizontal notches 52 forming the notches 52 are formed. The blocks 54 are engaged with the guides 53, and the blocks 54 are movable along the guides 53 in the pipe radial direction. A cylinder device 55 in the tube axis direction is attached to each block 54, and the cylinder device 55 is extendable in the direction toward the second plate 23. A contact plate 56 extending inward in the pipe radial direction is attached to the expandable end of the cylinder device 55.

The first plate 21 has a pair of swing levers 58.
Is attached, and the swing end of each swing lever 58 is connected to the block 54. A cylinder device 59 is provided between the rocking levers 58.
By swinging the swing lever 58 in response to the expansion and contraction movement of
The block 54 guided by the guide 53 is configured to move in the pipe radial direction. As the block 54 moves in this manner, the contact plate 56 correspondingly moves to a position where it can come into contact with the end surface of the push ring 9 due to expansion and contraction of the cylinder device 55, and from the push ring 9 in the pipe radial direction. It is movable between the outwardly retracted position and.

The cylinder device 55 extends at a position where the contact plate 56 can contact the end surface of the push wheel 9, so that the press wheel 9 in a state where the angle matches the angle of the recess 50 as described above.
It is configured to be pushed into the recess 50 by being pushed by the 56.

When the push wheel 9 is pushed into the recess 50 of the push wheel setter 42, the push wheel 9 can rotate integrally with the push wheel setter 42. Although illustration is omitted, the push wheel setter 42 has a sensor for detecting that the bolt hole 13 of the push wheel 9 is aligned with the position of the T-head bolt 10 held on the flange 7 of the receptacle 2 by this rotation. It is provided.

When the second plate 23 is pulled toward the first plate 21 by the cylinder device 22 after the positions of both of them coincide with each other, the push ring 9 causes the flange 7 of the socket 2 to move.
Approached. At this time, the seal material 8 is pushed between the seal material pressure contact surface 5 and the outer peripheral surface of the insertion opening 4 by being pushed by the push wheel 9. Further, the threaded portion of the T-head bolt 10 is passed through the bolt hole 13 of the push ring 9 and further projects from the push ring 9. The abutment plate 56 is retracted outwardly in the pipe radial direction from the push ring 9 by the extension of the cylinder device 55 at an appropriate time so that the movement of the push ring 9 is not hindered.

[0020]

However, in such a conventional device, the cylinder device 55 of the push wheel pusher 51 must be operated in synchronization with the operations of the push wheel setter 42 and the cylinder device 22. Further, the push wheel pusher 51 includes a push wheel setter 42 and a push wheel 9 based on the operation of the cylinder device 22.
The cylinder device 59 has to move between the retracted position and the operating position in response to the movement of the. For this reason,
The drive system and control system of the push wheel pusher 51 become complicated.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve the above problems and enable the push wheel pusher to function with a simple structure.

[0022]

In order to achieve the above object, the present invention is capable of fitting a means for holding a head of a bolt passed through a flange and a polygonal push ring fitted in an insertion opening. A push wheel setter having a recess, a push wheel pusher capable of pressing the push wheel toward the push wheel setter by a spring force, and by rotating the push wheel setter to match the contours of the recess and the push wheel of the push wheel setter, Rotating means for causing the push wheel to be inserted into the recess of the push wheel setter by the push wheel pusher, and further rotating the push wheel setter to match the bolt hole of the push wheel and the bolt passed through the flange in the circumferential direction, and the push wheel setter. By moving in a direction approaching the flange of the receiving port against the spring force, the sealing material fitted in the insertion port is pushed by the push ring. Causes pushed between socket spigot in the portion of Nji, is provided with a moving means for through a threaded portion of the bolt which is held by the holding means to the bolt hole of the pressing ring.

[0023]

With this structure, the push wheel pusher is
Since the push wheel setter is pressed against the push wheel by the spring force, the push wheel is surely pressed against the push wheel setter while the push wheel setter is rotating. Also, when the push wheel setter is moved by the moving means, the movement of the push wheel setter is followed without any problem. Further, therefore, the conventional saving operation is not required, and the saving drive system and control system are unnecessary.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 6 by giving the same reference numerals to the same members as those shown in FIGS. . 1 and 2
At 61, a hole 61 formed through the first plate 21
Is provided with a bush 62, and a bar 63 in the tube axis direction is slidably guided in the bush 62.
One end of the bar 63 extends toward the second plate 23 through the hole 61, and a pad plate 64 is attached to the tip thereof. A compression coil spring 65 is provided on the outer periphery of the bar 63 between the contact plate 64 and the bush 62.
The contact plate 64 is pressed so as to approach the second plate 23. A stopper 66 is provided on the other end side of the bar 63, and the maximum amount of protrusion of the contact plate 64 from the first plate 21 is regulated by the stopper 66 hitting the bush 62.

As shown in FIG. 2, the bar 63 is set in its radial position so as not to interfere with the receptacle 2 and the push ring 9, and at a plurality of positions along the circumferential direction of the pipe 1. Moreover, it is arranged at a position where it does not interfere with the bolt 10 and the holding member 34. The backing plate 64 is installed so as to extend inward in the pipe radial direction from the bar 63, whereby the second plate is installed.
When approaching 23, the side surface 67 of the push wheel 9 can be contacted. In this way, the push wheel pusher 68 is configured.

In such a structure, the socket 2 and the slot 4
When joining and, as shown in FIG. 1, the insertion port 4 in which the sealing material 8 and the push ring 9 are externally fitted is inserted into the receiving port 2 in which the T-head bolt 10 is passed through the flange 7. . Then, by suspending from above, the first and second plates
Place 21,23 on top of tubes 1,3. Further, the first plate 21 is moved in the tube axis direction, and the head of the bolt 10 is held by the holding member 34.

Next, the cylinder device 22 is driven to move the second plate 23 so as to approach the first plate 23. Then, as shown in FIG. 3, the second plate 23
The push wheel setter 42 hits the push wheel 9, and the side surface 67 of the push wheel 9 hits the backing plate 64 of the pusher 68. Then the back plate
64 is slightly moved closer to the first plate against the force of spring 65. When the movement of the second plate 23 by the cylinder device 22 is stopped in this state, the contact plate 64 presses the push wheel 9 against the setter 42 by the force of the spring 65. Further, in this state, as shown in FIG. 4, the angles of the recess 50 of the push wheel setter 42 and the push wheel 9 along the circumferential direction do not normally coincide with each other. That is, the push wheel 9 is fitted outside the insertion opening 4 in an arbitrary state, that is, in a state where it is not positioned in the circumferential direction.

Therefore, when the push wheel setter 42 is rotated by the motor 47, the push wheel 9 cannot be rotated due to its relatively large weight, and when the angle between the recess 50 and the push wheel 9 coincides,
By the action of the spring 65 and the contact plate 64, the push ring 9 is fitted into the recess 50. FIG. 5 shows the state at that time.

By further rotating the push wheel setter 42 together with the push wheel 9 by the motor 47, the bolt hole 13 of the push wheel 9 can be made to correspond to the position of the bolt 10 on the receiving port 2 side. At this time, the contact plate 64 of the push wheel pusher 68 and the side surface 67 of the push wheel 9 slide on each other.

Finally, as shown in FIG. 6, the cylinder device 22 is further driven to resist the force of the spring 65 and push wheel setter 42.
And the push ring 9 are brought close to the first plate 21. As a result, the push wheel 9 approaches the flange 7 of the socket 2, and the bolt 10 passes through the bolt hole 13. The sealing material 8 is pushed between the pressure contact surface 5 and the outer surface of the insertion port 4 by the push ring 9. When the push ring 9 is moved in this manner, the push ring pusher is moved.
Correspondingly, the bar 63 slides in the bush 62 against the force of the spring 65, so that the movement of the push ring 9 is automatically followed.

After that, the nut is screwed onto the bolt 10 by an appropriate means to compress the sealing material 8 and exert a predetermined sealing function. The contact plate 64 is formed thinner than the gap 69 between the flange 7 of the receiving port 2 and the flange 7 of the receiving port 2 when bolted, and the presence of the contact plate 64 causes the flange 7 to move to the flange 7. The tightening of the push wheel 9 is not hindered.

Finally, if the first and second plates 21 and 23 are lifted, they can be removed from the joint after the joining is completed. At that time, push ring pusher 68
Is also removed, and the force of the spring 65 causes the backing plate 64 to approach the second plate 23 again.

[0033]

As described above, according to the present invention, the push wheel pusher is provided which can push the push wheel toward the push wheel setter by the spring force, and the push wheel setter is rotated to make the contours of the recess and the push wheel of the push wheel setter. By matching
The push wheel pusher pushes the push wheel into the recess of the push wheel setter and moves the push wheel setter in the direction of approaching the flange of the socket against the spring force of the push wheel setter. In addition to being able to push the push wheel setter, even when the push wheel setter moves, the push wheel pusher can follow the movement of the movement without any problem, and for that reason, the retracting operation as in the past is not necessary, The drive system and control system for evacuation can be eliminated.

[Brief description of drawings]

FIG. 1 is a front view of a main part of a pipe joining apparatus according to an embodiment of the present invention.

FIG. 2 is an overall side view of the same device on a first plate side.

FIG. 3 is a diagram showing the next state of FIG.

FIG. 4 is an overall side view of a portion shown in FIG. 3 on a second plate side.

FIG. 5 is a diagram showing the next state of FIG.

FIG. 6 is a diagram showing the next state of FIG. 5;

FIG. 7 is a sectional view of a known pipe joint to be joined by the pipe joining apparatus of the present invention.

8 is a side view of the push ring in FIG. 7. FIG.

FIG. 9 is a front view of a main part of a conventional pipe joining device.

FIG. 10 is a side view of the apparatus of FIG. 9 on the first plate side.

11 is a cross-sectional view of the second plate in FIG.

12 is an overall side view of the portion shown in FIG.

[Explanation of symbols]

 2 Receiving port 4 Inserting port 7 Flange 8 Sealing material 9 Push ring 10 T-head bolt 22 Cylinder device 42 Push ring setter 47 Motor 50 Recessed portion 64 Abutment plate 65 Compression coil spring 68 Push ring pusher

Claims (1)

[Claims] 1. A ring-shaped sealing material disposed between a receiving opening of one pipe and an inserting opening of the other pipe inserted into the receiving opening.
A device for compressing by a push ring bolted to a flange at the opening end of the receiving port, the means for holding the head of the bolt passed through the flange, and the polygonal shape fitted to the insertion port. A push wheel setter having a recess into which a push wheel can be fitted, a push ring pusher capable of pressing the push ring toward the push ring setter by a spring force, and a contour of the recess of the push wheel setter and the push ring by rotating the push ring setter. By making them coincide with each other, the push wheel is pushed into the concave portion of the push wheel setter by the push wheel pusher, and the push wheel setter is further rotated to rotate the push wheel setter and the bolt passed through the flange in the circumferential direction. , The push wheel setter is moved in the direction of approaching the flange of the receiving port against the spring force, so that And a moving means for allowing the threaded portion of the bolt held by the holding means to pass through the bolt hole of the push wheel while providing the push-fitting member with the push wheel between the receiving openings in the flange portion. Pipe joining device.