JPH0526373A - Connecting apparatus of tube body - Google Patents

Abstract

PURPOSE:To provide a connecting apparatus of tube bodies which can be composed simply, operated easily, and which can be piped and connected without giving so heavy a load to the tube bodies. CONSTITUTION:When the inserting part 3 of a tube body 1 is connected to the socket 4 of a tube body 2 by using a connecting apparatus which consists of a tube body grasping unit 13, a fixing unit 11, an operating rod 7, a connecting rod 15, and a guide element 18 inserted to the guide holes of the operating rod 7 and the connecting rod 15, the tube body grasping unit 13 is bridged on the inserting part of the tube body 1. Then, the fixing unit 11 is set on a laying ground surface 12 at the lower side of the tube body 2, one end of the operating rod 7 is installed to the fixing unit 11, the operating rod 7 and the tube body grasping unit 13 are combined with the connecting rod 15, and the operating rod 7 is rotated in the directions of the arrow A making the installing part by the fixing unit 11 as the fulcrum. As a result, the guide element 18 is slided in a guide hole 10 following the rotation of the operating rod 7, and the tube body 1 is moved in the connecting direction, its inserting part 3 is inserted to the socket 4 of the tube body 2, and the tube bodies 1 and 2 are connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connecting device suitable for connecting pipes made of metal, synthetic resin, concrete or the like.

[0002]

2. Description of the Related Art Conventionally, in the construction of pipes such as electric conduits and water supply / drainage pipes, as shown in FIG.
The tube tightening tools c, c are attached to the respective connection ends of the tube and the b or the vicinity thereof, and the pulling tool d such as a lever block is installed between the tube tightening tools c, c, and the pulling tool d is The tube tightening tools c, c are connected with a rope such as a wire, and the pulling tool d is used.
Is operated to pull one or both of the tube bodies along the tube axis e. In addition to this, various devices have been proposed in the past for the purpose of speeding up and smoothing the connection work. For example, JP-A-55-9
In the Japanese Patent No. 6282, a clamp device having a clamp base, a clamp arm, and a grip handle is laid over each connection end of a pipe body to be connected, and the grip handle is operated.
The crimping body attached to the tip of the clamp arm is pressed from the upper side of the pipe body and from the three sides on the left and right sides to grip the pipe body, while a rack rod is installed between both clamp bases and mounted on the rack rod. Disclosed is a pipe insertion device in which one clamp device is pulled together with one pipe body by operating a tooth ring to connect them.

[0003]

However, in these prior arts, the equipments are large and complicated, and since they are directly attached to the pipe body, the weight becomes large during the centering work of each pipe body. Not only was it difficult to work with, but it was not a device that anyone could easily operate.

Further, since the means for pulling by directly applying a force in the connecting direction to the tube tightening device and the clamp device of both the tubes to be connected, the two tube bodies are connected to each other.
It is necessary to attach a tube tightening device and a clamp device, and all the force required for connection will be applied to each tube, and there is a risk that the tube will be loaded that much and the tube will be damaged. .

The present invention eliminates the above-mentioned drawbacks of the prior art, does not affect the centering work of each tube, and the structure and operation of the equipment used are simple, which may damage the tube. The purpose of the present invention is to provide a connection device without a connection.

[0006]

According to a first aspect of the present invention, there is provided a tubular body gripping tool which is attached to an outer peripheral surface of one tubular body to be connected, and a fixing tool which is fixed to a laying surface of the other tubular body. The fixing rod has an operating rod having one end attached thereto, and the pipe gripping tool has a connecting rod having one end attached thereto, and further, an operating rod and a connecting rod provided in respective longitudinal directions. The gist of the invention is to provide a connecting device for a pipe body, which has a guide for connecting the holes in an intersecting state, and the invention according to claim 2 has an operating rod and a connecting rod. Although the connecting mechanism is different from that of the invention described in claim 1, it is a connecting device for pipes having the same structure as the others. That is, the connecting rod and the operating rod are connected by a rack provided on the connecting rod and a pinion that meshes with the rack provided on the operating rod, and the ratchet mechanism is attached to the pinion. The gist is the connecting device.

In the invention of claim 1 or 2, the material of the pipe body to be connected is not particularly limited, and examples thereof include a metal pipe, a synthetic resin pipe, a fiber reinforced synthetic resin pipe, a concrete pipe and the like. The shape is not limited to a circular tube, but an oval tube, a rectangular tube, or the like is also applicable.

Similarly, the diameter is not particularly limited, but it is usually 300 mm or less. Therefore, it is necessary to set the materials and dimensions of the tubular body gripping tool, the fixing tool, and the operating rod in consideration of these factors.

[0009]

According to the first aspect of the present invention, when this is used to connect the pipes, the pipe gripping tool is attached to the outer peripheral surface of any one of the pipes to be connected and fixed to the laying surface of the other pipe. Install the tool, attach one end of the operating rod to this fixture rotatably,
If the operating rod and the pipe gripping tool are connected by the connecting rod, the operating rod can be moved in the connecting direction by rotating the operating rod with the mounting portion of the fixture as a fulcrum. The point of action of the force applied to connect the body is
The operating rod and the fixture, the operating rod and the connecting rod, the connecting rod and the pipe gripping device become the respective connecting parts, and part of the force for movement is applied to the laying surface via the fixing device. As a result, the force acting on the pipe becomes weaker, the load on the pipe becomes lighter, and it can be operated by simple equipment that utilizes the lever principle.

Further, since the operating rod and the tubular body grasping tool are connected by the connecting rod and the fixing tool is fixed to the laying surface of the other tubular body, the moving distance between the connecting tubular bodies is slightly long. However, if a long connecting pipe is used correspondingly, the connecting work of the pipes can be performed.

According to the invention described in claim 2, when this is used for connecting a pipe body, the same effect as the invention described in claim 1 is exerted, and in addition to that, the principle of leverage acting on the gear mechanism is provided. Since it uses, the connection work can be performed with a smaller force and a simpler operation.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIGS. 1 and 2 show an embodiment of a connecting device for a pipe body according to the invention of claim 1, wherein in these figures, 1 is a connecting pipe body and 2 is a connecting pipe body. Is the other tube body, 3 is the outlet of the tube body 1,
Reference numeral 4 is a receiving port for the tubular body 2.

Reference numeral 5 denotes a tubular body pressing member, which is an annular body made of a hard synthetic resin and partially missing, as shown in FIG. By using the elasticity of the material to push it in from above, it can be detachably fitted. The tubular body pressing tool 5 includes two pressing members 51, as shown in FIG.
It is also possible to use a structure in which 51 is a hinge structure and which is given elasticity by a compression spring 52. Alternatively, a convex strip for preventing slippage is provided on the surface of the tubular body pressing member that comes into contact with the tubular body, or a non-slip material such as rubber. It is optional to stack the materials.

On both sides below the tubular body pressing tool 5, shaft rods 6, 6 are provided.
Is projectingly provided, and the lower end of the operating rod 7 is rotatably attached to this. The operating rod 7 has an upper portion serving as a gripping portion 8, a lower portion bifurcated into traction rods 9 and 9, and guide holes 10 and 10 formed of elongated holes are provided in a longitudinal direction thereof. The guide hole is not limited to the long hole, and may be a plurality of small holes arranged side by side in the longitudinal direction as in the embodiment shown in FIG.

Numerals 11 and 11 are fixtures, which are coaxially and rotatably attached to the shaft rod 6 so that the upper end of the attachment portion of the operating rod 7 is sandwiched between them. 4 is pushed into the laid soil surface 12 on both sides below.

Reference numeral 13 denotes a steel pipe body gripping tool having an arcuate cross section, which is fitted and laid across the pipe body 1 from above in the vicinity of the outlet 3 by utilizing the elasticity of the steel. There is.
Further, shaft rods 14, 14 are provided so as to project from both side surfaces of the tubular body gripping tool 13, and one ends of the connecting rods 15, 15 are rotatably attached. As shown in FIG. 2 (b) in an enlarged manner, the connecting rod 15 is provided with a guide hole 16 formed of an elongated hole and a plurality of locking portions 17, 17 ... Communicating with the guide hole 16 along the guide hole 16. It has a different structure.

Further, the tip end of the connecting rod 15 is rotatably connected to the pulling rod 9 of the operating rod 7 by means of a guide element 18 composed of a bolt and a nut. Next, a method for connecting pipes to each other using the pipe connecting device of the invention according to claim 1 will be described.

First, the pipes 1 and 2 are installed at preset laying positions of the pipes, and as shown in FIG. 1, the pipe body pressing tool 5 is pushed into the vicinity of the receiving port 4 of the pipe body 2 from above. By doing so, the fixture 11 is pushed into the laying soil surface 12 on both lower sides thereof to be fixed while being fitted. When the pipe body pressing tool 5 is used for the pipe body 2 as in this example, the force acting in the connecting direction at the time of connecting the pipe bodies causes the pipe body 2 and the existing pipes connected to the pipe body 2. It doesn't affect to.

Further, the operating rod 7 is previously fixed to the shaft rod 6 by a fixture 11.
It may be axially attached together, or may be attached after the tubular body pressing tool 5 and the fixing tool 11 are attached or installed.
Next, in the vicinity of the outlet 3 of the tubular body 1, the tubular body gripping tool 13 is pushed and straddled, and the shaft rods 14, 14 projecting on both sides of the tubular body gripping tool 13 are connected to the connecting rods 15, One end of the connecting rod 15 is rotatably attached, and the other end of the connecting rod 15 is operated by locking the guide element 18 inserted into the guide hole 10 of the operating rod 7 to an arbitrary locking portion 17 thereof. Connect to the rod 7.

When the preparation is completed in this way, the grip portion 8 is rotated around the shaft 6 in the direction of arrow A. Then,
The guide element 18 slides in the guide hole 10 and slides in the connecting direction (see FIG.
Then move to the left). When the grasping portion 8 is rotated once in the direction of arrow A and the insertion opening 3 of the tubular body 1 is inserted into the receiving opening 4 of the tubular body 2 and cannot be completely connected, the guide 18
Is slid in the guide hole 16 of the connecting rod 15 and the locking portion 1
By appropriately changing the position of 7, the connecting point between the tow rod 9 and the connecting rod 15 may be changed and the same operation may be repeated.

Next, another embodiment of the pipe connecting device of the invention according to claim 1 shown in FIGS. 3 and 4 will be described. In these drawings, members having the same names as those in the above-mentioned embodiment are designated by the same reference numerals. The fixing tool 11 is rotatably attached to the shaft rod 6 of the tubular body pressing tool 5, and is installed on the laid earth surface 12. This fixing tool 11 uses a rectangular metal plate as a substrate 19, and has a spike-like fixing blade 2 on its lower surface.
A large number of 0 and 20 are projectingly installed, and they are fixed by being pushed into the laid soil surface 12.
Further, each fixed blade 20 has a shaft 2 as shown in FIG.
1, a shaft 21 is fixed to the substrate 19 by a bearing (not shown), and a spring 22 attached to the shaft 21 constantly applies elastic force in the direction of arrow C. It does not rotate further in the direction of arrow C from the position shown, but when force is applied in the direction of arrow D, it rotates until the edge contacts the lower surface of the substrate 19. Also, substrate 1
A bearing 23 is provided on the upper surface of the bearing 9.
The shaft rod 6 of the tubular body pressing tool 5 is fitted in the.

On the operating rod 7, the pulling rods 9, 9 are provided with guide holes 24 formed of a large number of small holes. Next,
Explaining a method of connecting the pipes to each other using the above-described pipe connecting device, the pipes 1 and 2 are installed at the laying positions of the pipes, and as shown in FIG. The tubular body pressing tool 5 is inserted in the vicinity of the receiving port 4 by being pushed in from above, and the fixing tools 19 are pushed in and fixed to the laying soil surfaces 12 on both lower sides thereof. Next, in the vicinity of the outlet 3 of the tube body 1, the tube body gripping tool 13 is pushed in and straddled. In this case, the tubular body gripping tool 13 has a shaft rod 1 projectingly provided on both sides of the tubular body gripping tool 13 depending on the size of the diameter of the symmetric tubular body when the tubular body gripping tool 13 is straddled.
It is preferable to prepare various types so that the positions of 4 and 14 are substantially at the same height as the tube axis.

Next, the shaft rods 14, 14 of the tubular body gripping tool 13
, One end of the connecting rods 15 and 15 is rotatably attached, and the other end of the connecting rod 15 is attached to the engaging portion 17 of the guide rod 18 inserted into the guide hole 24 of the operating rod 7. By doing so, it is connected to the operating rod 7. However, at the time of this connection, it is preferable to select the guide hole 24 of the operating rod 7 so that the position of the connecting rod 15 is substantially at the same height as the pipe axis.

That is, when the pipe to be connected has a relatively large diameter, the guide hole 24 of the tow rod 9 uses the guide hole 24 at a correspondingly high position. Conversely, when the diameter is relatively small, The lower guide hole 24 is used.

When the preparation is completed in this way, the grip portion 8 is rotated around the shaft 6 in the direction of arrow A. Then,
The guide element 18 rotates in the guide hole 24, moves while drawing an arc, and pulls the connecting rod 15. Next, the guider 18 is disengaged from the locking portion 17, and the operating rod 7 is rotated in the direction of the arrow B so as to pass through the elongated hole 16, while the guider 18 is further rooted (right in FIG. 3). Is locked to the locking part 17 closer to
The operation of rotating the operating rod 7 in the direction A again is repeated, and the one tube body 1 is moved in small steps in the connecting direction to be connected.

Further, at the time of connecting the pipes, the pipe pressing member 5
When the operating rod 7 is pushed to slide the fixture 19 on the laid soil surface 12 while inserting the fixing blade 20, the fixing blade 20 rotates around the shaft 21 and is indicated by a virtual line in FIG. Because it will come to the position shown,
Since the board 19 can be smoothly advanced on the laid soil surface 12, the function of the fixture 11 is changed by the guide 18 of the connecting rod 15.
It can be used for the first locking operation between the locking rod 17 and the locking portion 17 of the connecting rod 15.

Next, an embodiment of the connecting device of the pipe body according to the second aspect of the present invention shown in FIG. 5 will be described. In FIG. 5, reference numeral 26 is a ratchet rotatably attached to the shaft rod 6 of the tubular body pressing tool (not shown), and 27 is the shaft rod 6
When the operating rod 7 rotates in the direction of arrow A, the pinion 27 also rotates in the direction of arrow A when the operating rod 7 rotates in the direction of arrow A. When is rotated in the direction of arrow B, it works so as not to interlock. Reference numeral 28 denotes a rack provided on the connecting rod 15, which engages with the pinion 27 and operates. The pinion 27 and the rack 28 form a gear mechanism 29. The other mechanism is almost the same as that of the connecting device according to the first aspect of the present invention, and the description thereof is omitted.

Next, a method of connecting the pipes to each other using the pipe connecting device of the invention according to claim 2 will be described. As shown in FIG. Installation, insertion of the tubular body pressing tool 5, and laying earth surface 1 on both lower sides of the fixing tool 19.
Fixing in 2; straddling pipe body gripping tool 13 in the vicinity of outlet 3 of pipe body 1; connecting rod 14 and connecting rod 15 projecting on both sides of this pipe body gripping tool 13 Etc. are the same as those of the connecting device shown in FIGS. 3 and 4, and in the present invention, the connecting rod 1
The method of connecting 5 and the operating rod 7 is different. That is, the rack 28 provided on the other half of the connecting rod 15 is engaged with the pinion 27.

When the preparation is thus completed, the grip portion 8 is swung around the shaft 6 in the directions of arrows A to B. Then, the gear mechanism 29 causes the connecting rod 15 to move horizontally in the connecting direction of the pipes, and pulls the connecting rod 15. Then, the one tube body 1 is moved in small steps in the connection direction to be connected.

In this case, the connecting rod 15 is previously connected to the pipe shaft 2.
It is the same as in the case of the embodiment of the pipe connecting device shown in FIGS. 3 and 4 described above that it is preferable that the height is substantially the same as that of 5 and the parallel holding is performed.

In the invention described in claim 1, in each of the above-mentioned embodiments, the tube body 1 to be connected to the pulling rod 9 of the operating rod 7.
An example in which a bifurcated bifurcation is used on both sides of the pipe, and therefore fixtures and the like are also installed on the laid soil surface 12 on both lower sides of the receiving port 4 of the tubular body 2 is shown. As in the case of 8, the fixing tool may be installed on one side. In this case, in the connecting work of the pipes, the runout of the pipes can be prevented by raising a sheet pile or hitting a pile on the side where the connecting device is not installed.

In the embodiment described in claim 1, in the case of the embodiment shown in FIGS. 3 and 4, the guider 18 serves as a means for connecting the connecting rod 15 and the operating rod 7 with each other. Since it is rotatable within 24, the tube body 1 can be moved in a wavy manner during movement. Therefore, the fixture 11
It is preferable to make the distance between the upper fulcrum and the pivotal fulcrum on the operating rod 7 as short as possible.

In the invention described in claim 1, in the above-described embodiment, the moving tube 1 is connected to the receiving port 4 of the tube 2 by way of example, but conversely, the tube 1 is moved. It is also possible to provide a receiving port, provide an opening toward the pipe body 2, move the pipe body 1, and connect the receiving port to the insertion port of the pipe body 2.

In the invention described in claim 1 or 2, in the above embodiment, the tubular body gripping tool has a structure in which the tubular body is fitted on the tubular body by utilizing its elasticity. Although it has excellent workability, it has a structure in which it is wound in the circumferential direction of the tubular body, for example, plastic fasteners are provided at both edges, and the tubular body is covered to form a tubular wound body. It may be obtained, or may be simply a wire or nylon sling wound in the circumferential direction.

[0035]

According to the invention as set forth in claim 1, when this is used for connecting the pipes, the operating rod is rotated around the mounting portion of the fixing tool as a fulcrum to thereby connect the pipes in the connecting direction. The operating points of the force applied to connect the pipes are the connecting parts of the operating rod and the fixture, the operating rod and the connecting rod, the connecting rod and the pipe gripping device, and the moving Since a part of the force for this is applied to the laying surface via the fixture, the force acting on the pipe becomes weaker by that amount, the burden on the pipe is lightened, and the principle of leverage is used. It can be operated with simple equipment.

If a long connecting pipe is used, the connecting work of the pipes can be performed even if the moving distance between the connecting pipes is a little long. Therefore, the pipes are not damaged during the connecting work of the pipes, the equipment cost is low, anyone can operate, and the work can be speeded up, so that the construction cost can be reduced.

The invention according to claim 2 has the same effect as that of the invention according to claim 1 when it is used for connecting a pipe body, and in addition to that, the principle of leverage acting on the gear mechanism is provided. Since it uses, the connection work can be performed with a smaller force and a simpler operation.

Therefore, improvement of workability can be promoted.

[Brief description of drawings]

FIG. 1 is a front view for explaining an embodiment of the connecting device of the invention according to claim 1. FIG.

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. 1B is a partially cutaway enlarged cross-sectional view of the guide hole provided in the connecting rod in FIG. FIG. 3C is a front view showing another example of the tubular body pressing tool used in the connecting device shown in FIG.

FIG. 3 is a front view for explaining another embodiment of the connecting device according to the first aspect of the invention.

4 (a) is a partially cutaway side sectional view taken along line IV-IV in FIG. 3 and viewed in the direction of the arrow. FIG. 11B is a partially cutaway enlarged side view showing only the fixing tool and the fixing blade provided in the connecting tool of the invention shown in FIG.

FIG. 5 is an enlarged sectional view of an essential part showing an embodiment of the connecting device of the invention according to claim 2;

FIG. 6 is a front view for explaining an example of a conventional connection method.

[Explanation of symbols]

1 tube 2 tubes 3 Receptacle 4 outlet 5 Tube pressing tool 7 Operation rod 10 guide hole 11 Fixture 12 Laying soil surface 13 Pipe gripping tool 15 Connection rod 16 guide hole 17 Locking part 18 guide 19 Fixture 24 guide hole 26 ratchet 27 Pinion 28 racks 29 Gear mechanism

Claims (2)

[Claims] 1. A pipe gripping tool that is attached to the outer peripheral surface of one pipe to be connected, a fixture that is fixed to the laying surface of the other pipe, and a guide hole, and one end of which is fixed. The operating rod rotatably attached to the tool, the guide hole extending therethrough, and the one end of the connecting rod rotatably attached to the pipe gripping tool, and the guide rod of the operating rod and the connecting rod. An instrument for connecting pipes, which comprises a guider that can be used. 2. A pipe gripping tool attached to the outer peripheral surface of one pipe to be connected, a fixture fixed to the laying surface of the other pipe, and one end rotatably attached to the fixture. The operating rod and a connecting rod having one end attached to the pipe gripping tool, the operating rod is provided with a pinion having a ratchet mechanism, and the connecting rod is provided with a rack that meshes with the pinion. And a connecting rod and an operating rod are connected by a gear mechanism including the rack and the pinion.