JPH04362385A - Pipe body connecting method and apparatus therefor - Google Patents

Abstract

PURPOSE:To reduce installation cost without marring pipe bodies and facilitate operation so as to expedite work by connecting a pipe body holder, fitted to a pipe body, to a fixture, installed on the pipe body laying surface, by an operating rod, and rotating the operating rod around its connecting part to the fixture as a fulcrum to move the pipe body. CONSTITUTION:Pipe bodies 1, 2 are installed in the preset pipe laying position, and a pipe body holder 17 is provided astride at the spigot 4 of the pipe body 2. A fixture 5 is fixed onto the laying earth surface on each side of the pipe body holder 17, with fixing blades 8 biting into the earth. The guide element 18 of the pipe body holder 17 is fittingly inserted into a guide hole 16, and a grip part 14 is rotated around a shaft 12 in the direction of an arrow mark C. Then the guide element 18 moves in the connecting direction while sliding inside the guide hole 16, so that the pipe body 2 is moved along a pipe axis. With one turning operation, the spigot 4 of the pipe body 2 is inserted into the socket 3 of the pipe body 1, and in the case of being connected incompletely, the fixing position of the fixture 5 is changed to repeat the same operation.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting pipes made of metal, synthetic resin, concrete, etc., and a device for connecting pipes.

0002

[Prior Art] Conventionally, in the construction of pipe bodies such as electrical conduits and water supply and drainage pipes, as shown in Fig.
At or near each connection end of and b, a pipe tightening tool c,
Install the traction device d such as a lever block between the tube body tightening devices c and c, and then attach the traction device d and the tube body tightening device c.
, c are connected with a load rope such as a wire, and a pulling tool d is operated to pull one or both of the tube bodies along the tube axis e. In addition, various other devices have been proposed in the past for the purpose of speeding up and smoothing this connection work (Japanese Patent Laid-Open No. 55-96282,
Or refer to each publication of Utility Model Application Publication No. 2-74180).

0003

[Problems to be Solved by the Invention] However, in these conventional techniques, the equipment is large and complicated, and because it is attached directly to the pipe, the weight increases when centering each pipe. Not only was it difficult to operate, but it was not easy for anyone to operate.

[0004] Also, since the method of applying direct force in the direction of connection to the tube body tightening devices of both tube bodies to be connected was adopted, it was necessary to attach tube body tightening devices to both tube bodies. At the same time, all the force required for connection is applied to each pipe body, which places a corresponding burden on the pipe body.
There was a risk of damaging the pipe body.

The present invention eliminates the drawbacks of the prior art as described above, does not affect the centering work of each tube, has simple structure and operation of the equipment used, and eliminates the risk of damaging the tube. The purpose of this invention is to provide a connection method that does not currently exist, and a suitable connection device for use with this connection method.

[0006]

[Means for Solving the Problems] The invention as claimed in claim 1 provides a method in which a tube gripping device is attached to the outer circumferential surface of one of the tubes to be connected, a fixing device is installed on the laying surface of the lower tube, and this A tube body characterized in that the fixing tool and the tube body gripping tool are connected by an operating rod, and the tube body is moved in the connection direction by rotating the operating rod using the connection part with the fixing tool as a fulcrum. The gist of the invention is a connection method, and the invention according to claim 2 provides a tube gripping tool that can be attached to the outer circumferential surface of a tube to be connected and that is provided with a guide on the surface thereof, and A fixing device that can be installed on the laying surface of the tube body, and a guide hole that is rotatably attached to the fixing device at one end and is an elongated hole into which the guide of the tube gripping device can be inserted. The gist of this invention is a pipe connection device characterized by comprising an operating rod inserted through the device.

In the invention as claimed in claim 1 or 2, the material of the pipe to be connected is not particularly limited, and examples thereof include metal pipes, synthetic resin pipes, fiber-reinforced synthetic resin pipes, concrete pipes, etc. The symmetry is not limited to circular tubes, but also oval tubes, square tubes, etc.

[0008] Similarly, there is no particular restriction on the diameter, but it is usually less than 300 mm. Therefore, the materials, dimensions, etc. of the tube gripping tool, fixture, operating rod, etc. need to be set in consideration of these factors.

[0009]

[Operation] The invention as set forth in claim 1 provides a tube gripping device that is attached to the outer peripheral surface of one of the tubes to be connected, a fixing device installed on the laying surface of the lower tube, and a tube gripping device that is attached to the tube body gripping device. The pipe body is connected to the fixture by the operating rod, and the pipe body is moved in the connecting direction by rotating the joint part of the operating rod with the fixture as a fulcrum, so that it is possible to move the pipe body in the connection direction. The points of force application are provided at the connecting parts of the operating rod and the fixing device and the tube gripping device, and part of the force for movement is applied to the installation surface via the fixing device. The force acting on the tubular body is correspondingly weaker, and the burden on the tubular body is reduced. Moreover, it can be operated with simple equipment that utilizes the principle of leverage.

The invention according to claim 2 provides a tube gripping tool which can be attached to the outer circumferential surface of the connecting tube and has a guide provided on its surface, and which can be installed on the laying surface of the lower tube. A tube body consisting of a fixing device having a fixed shape, and an operating rod having one end rotatably attached to the fixing device and having a guide hole formed of an elongated hole through which a guide of the tube body gripping device can be inserted. Since it is a connecting device, when it is attached to a pipe body and used for moving the pipe body, it has the same effect as the invention described in claim 1 above, and in addition, it has the same function as the fixing device. When the operating rod is rotated using the connecting part with the operating rod as a fulcrum, the guide slides in the guide hole as the operating rod rotates, and the tube gripped by the tube gripping tool almost aligns with its tube axis. can be moved along the connection direction.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view for explaining an embodiment of the invention connection device according to claim 2 and the invention method according to claim 1 performed using the same, and FIG. It is a partially cutaway side sectional view cut along the line II-II and viewed in the direction of the arrow, and the same figure (b) is an enlarged view for explaining the operating state of the blade attached to the fixture in the same as above. .

In these figures, 1 is a pipe that has already been laid, 2 is a pipe that is about to be connected to pipe 1, and 3 is a pipe that is to be connected to pipe 1.
4 is a socket for the tube body 1, and 4 is a socket for the tube body 2 to be connected.

Reference numeral 5 denotes a fixture, which is installed on the soil surface 6 on both sides below the socket 4 of the pipe body 2 to be connected. This fixture 5 has a rectangular metal plate as a substrate 7,
A large number of spike-shaped fixing blades 8, 8, . or,
As shown in FIG. 2B, each fixed blade 8 is pivotally attached to a shaft 9, and this shaft 9 is fixed to the base plate 7 by a bearing (not shown), and is also supported by a spring 10 attached thereto. , is always elastically biased in the direction of arrow A, but when it does not rotate any further in the direction of arrow A from the position shown in FIG. It rotates until it touches the bottom surface of the. Further, a bearing 11 is provided on the upper surface of the substrate 7, and a shaft 12 is attached to this bearing 11.

Reference numeral 13 denotes an operating rod, and the tip of the gripping portion 14 is bifurcated to form traction rods 15, 15, and elongated holes 16, 16 are formed through the rods in the longitudinal direction. Reference numeral 17 denotes a tubular body gripping tool having an arc-shaped cross section, and is fitted over the tubular body 2 from above the spigot 4 by utilizing the elasticity of its steel. Also, from both sides, a guide 18 consisting of a bolt,
18 protrudes horizontally, is slidably fitted into the guide hole 16 of the traction rod 15, and is prevented from coming off by a nut 19.

[0015] Next, an embodiment of the invention, that is, a method for connecting an invention pipe according to claim 1 using the device for connecting the pipe according to claim 2 will be explained. The tubes 1 and 2 are installed at the laid position of the tube, and as shown in FIG. The fixing tool 5 is fixed on the laying soil surface 6 on both sides of the tube body gripping tool 16 by biting its fixing blades 8, 8 into the laying soil surface 6, and the guides 18, 18 of the tube gripping tool 16
are inserted into the guide holes 16, 16 of the traction rods 15, 15 and locked with the nuts 19, and then the grip portion 14 is rotated around the shaft 12 in the direction of arrow C.

Then, the guide element 18 slides within the guide hole 16 and moves in the connection direction (to the left in FIG. 1), so that the tube body 2 is moved along the substantially horizontal axis of the tube. Insert the socket 4 of the tube body 2 into the socket 3 of the tube body 1 by rotating the gripping part 14 once in the direction of arrow C. If the connection cannot be made completely, adjust the fixing position of the fixture 5. Just make the change and repeat the same operation. In making this change,
To move the board 7 in the connection direction, press the operating rod 13 to slide the board 7 on the soil surface 6, and the fixed blade 8 rotates around the shaft 9 as shown in Fig. 2 (b). Since the base plate 7 is at the position shown by the imaginary line, the base plate 7 can be smoothly advanced on the soil surface 6.

[0017] In the method according to claim 1, the above embodiment shows an example in which one connecting device according to claim 2 is used, but it is not necessarily limited to one, and two or more may be used. In this case, each connection device may be installed at appropriate intervals in the connection direction.

The method of the invention described in claim 1 is mainly operated by attaching a connecting device to one of the tube bodies, but also attaching a connecting device to the other tube body to operate both tube bodies. This does not preclude the simultaneous use of connection devices.

In the invention as claimed in claim 1 or 2, in the above embodiment, the traction rod 15 is bifurcated on both sides of the pipe body 2 to be connected, and therefore the fixing member 5 is also
Although an example is shown in which the pipe body 2 is installed on the soil surface 6 on both sides below the spigot 4, the traction rod 15 is a single piece like the grip part 14, and the fixing device 5 is also installed on one side. It may be something that has been done. In this case, when connecting the pipes, erecting sheet piles or driving stakes on the side where the connecting device is not installed can prevent the pipes from swinging.

In the method according to claim 1, in the above embodiment, the guide 18 of the tube gripper 17 is connected to the guide hole 16 of the operation rod 15 as a means for connecting the tube gripper 17 and the operating rod 15. Although the example is shown in which it slides inside, it may also be rotatable at one point on the operating rod 15. In this case, since the tubular body 2 is moved in an undulating manner during movement, it is preferable to make the distance between the fulcrum on the fixture 5 and the rotation fulcrum on the operating rod 15 as short as possible.

In the method of the invention according to claim 1, in the above embodiment, the moving pipe body, that is, the pipe body 2 to be connected has its socket 4 connected to the socket of the pipe body 1 to be connected. However, conversely, the tube body 2 to be connected may have its socket 3 connected to the socket of the tube body 1 to be connected.

[0022] In the invention connecting device according to claim 2,
The fixed blade 8 of the fixture 5 may be fixed to the fixture 5. In the invention connecting device according to claim 2,
In the above embodiment, the tubular body gripping tool 17 has a structure in which it is fitted from above the tubular body using its elasticity, which has excellent workability. things,
For example, it may be one in which plastic fasteners are provided on both ends and can be wrapped around a tube body to form a cylindrical wrapped body, or it may be one in which wires, nylon slings, etc. are simply wound in the circumferential direction. . Further, in order to more securely fix the tube body and the tube gripping tool, it is optional to provide unevenness on the back surface of the tube gripping tool or to laminate an anti-slip material.

[0023]

[Effects of the Invention] The invention as claimed in claim 1 is characterized in that a tube gripping device is attached to the outer circumferential surface of one of the tubes to be connected, a fixing device is installed on the laying surface of the lower tube, and the fixing device and the tube The tube body is connected to the body gripping tool by the operating rod, and the tube body is moved in the connecting direction by rotating using the connecting portion of the operating rod with the fixing device as a fulcrum, so that it is possible to connect the tube body. The points of application of the force to be applied are provided at the respective connecting parts of the operating rod and the fixing device and the tube gripping device, and part of the force for movement is applied to the laying surface via the fixing device. Therefore, the force acting on the tube body becomes weaker, and the burden on the tube body becomes lighter. Moreover, it can be operated with simple equipment that utilizes the principle of leverage.

[0024] Therefore, the pipe body is not damaged during work, the equipment cost is low, and anyone can operate it.
Moreover, it is possible to speed up the work. The invention according to claim 2 provides a tube gripping tool that can be attached to the outer peripheral surface of a connecting tube and has a guide provided on its surface, and can be installed on the laying surface of the lower tube. For connecting a tube body, consisting of a fixture and an operating rod, one end of which is rotatably attached to the fixture and has a guide hole formed of an elongated hole into which the guide of the tube gripping tool can be inserted. Since it is an instrument, when it is attached to a pipe body and used for moving the pipe body, it has the same effect as the invention described in claim 1 above, and in addition, it has the same effect as the fixing device and the operating rod. When the operating rod is rotated using the connecting part as a fulcrum, the guide slides in the guide hole as it rotates, and the tube gripped by the tube gripper connects approximately along its tube axis. can be moved in the direction.

[0025] Therefore, it is a suitable connecting device for use in the method of the invention as set forth in claim 1.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the invention connecting device according to claim 2;
It is a front view for explaining the invention method of Claim 1 carried out using this.

FIG. 2A is a partially cutaway side sectional view taken along line II-II in FIG. 1 and viewed in the direction of the arrow. FIG. 3B is an enlarged view for explaining the operating state of the blade attached to the fixture.

FIG. 3 is a front view for explaining an example of a conventional connection method.

[Explanation of symbols]

1 Pipe body to be connected 2 Pipe body to be connected 3 Socket 4. Socket 5 Fixing tool 6 Laying soil surface 6 7 Board 8 Fixed blade 12 axis 13 Operation lever 14 Gripping part 15 Traction rod 16 Guide hole 17 Pipe gripping tool 18 Guide

Claims (2)

[Claims] [Claim 1] A tube gripping tool is attached to the outer peripheral surface of one of the tubes to be connected, a fixing device is installed on the laying surface of the lower tube, and the fixing tool and the tube gripping tool are connected by an operating rod. A method for connecting a tube body, which comprises connecting the tube body and moving the tube body in the connection direction by rotating the connection portion of the operating rod with the fixture as a fulcrum. [Claim 2] A tube gripping tool that can be attached to the outer peripheral surface of the tube to be connected and has a guide provided on its surface, and a fixture that can be installed on the laying surface of the lower tube. , an operating rod having one end rotatably attached to a fixture and having an elongated guide hole through which the guide of the tube gripping tool can be inserted. Equipment for connecting pipes.