JP3210088U - Pipe traction device - Google Patents

Abstract

A pipe traction device is provided that draws the end of the other pipe connected to the end of one fixed pipe toward the side of the one pipe. A plurality of divided bands 16 are joined together via a connector 18 to form an annular shape, and are wound around and fixed to the outer circumferences of the ends of one tube 12 and the other tube 14. A chain or wire is connected to the anchor bolt 22 attached to the connector 18 using a hook 26. A winding machine 30 is provided that operates to reduce the length of the chain or wire. The connector 18 is arranged at two or more locations around the pipe in a substantially axial manner, and the other pipe 14 can be pulled with a plurality of chains or wires in a well-balanced manner. [Selection] Figure 1

Description

  The present invention relates to an apparatus used when drawing one pipe to the other pipe when connecting a large-diameter sewer pipe or a water pipe.

  The inventor has already developed a device suitable for axial alignment when a sewage pipe or a water pipe is buried by digging a groove in the ground. This is an improvement of the technique introduced in Patent Documents 2-5 and the like.

No. 2006-005613 JP 2002-295732 A JP 2008-232203 A Japanese Patent Laid-Open No. 2006-142326 Japanese Patent Laid-Open No. 2006-142326

The known prior art has the following problems to be solved.
After precisely aligning the pipes to join them, it is necessary to draw one pipe to the other pipe. A large force is required to move a large-diameter and heavy-weight pipe while maintaining the axial alignment. In addition, there is a problem that it takes time because it works carefully so as not to upset the axis.
An object of the present invention is to provide a pipe traction device that can be pulled and connected efficiently by combining with the previously developed device.

  The following configurations are means for solving the above-described problems.

<Configuration 1>
For pulling the end of the other tube connected to the end of one fixed tube toward the one tube;
A connector that is formed by connecting a plurality of divided bands into an annular shape and winding and fixing one tube and the other end of the other tube.
A pipe traction device comprising: a chain or a wire connected to an anchor bolt attached to a connector using a hook; and a winding machine that operates to reduce the length of the chain or wire.

<Configuration 2>
2. The pipe traction device according to Configuration 1, wherein the connectors are arranged at two or more locations around the pipe substantially on the axis.

<Configuration 3>
The band and the connector are connected to each other by a bolt fixed to the end of the band. The connector has a curved surface that is in close contact with the tube on the surface that contacts the tube. The pipe traction device according to any one of the first to third aspects, wherein an anchor bolt for connecting the two is fixed.

<Effect of Configuration 1>
Wrap and fix the band and connector on the outer periphery of the end of one tube and the other tube, pull the anchor bolt provided on the connector with a tightening machine, and connect the end of the other tube to the one tube side Can be drawn to.
<Effect of Configuration 2>
The other tube can be pulled with a plurality of chains or wires in a well-balanced manner.
<Effect of Configuration 3>
Since the curved surface of the connector is fixed in close contact with the pipe, the end of the pipe can be firmly grasped and the pipe can be drawn.

FIG. 1A is a front view of a pipe traction device of Example 1, and FIG. 2A is a plan view of the connector 18, and FIG. 2B is a side view. 3A is an enlarged partial cross-sectional view of a connection portion between the band 16 and the connector 18, FIG. 3B is a plan view of the band 16, and FIG. 3C is a side view. It is structure explanatory drawing of the universal guidance apparatus 38 used for positioning. FIGS. 5A to 5C are cross-sectional views of a tube showing a method for positioning the tube 14 by the universal guidance device 38. FIG. FIG. 6 is an explanatory view of the operation of drawing one pipe 12 that has been aligned in advance toward the other pipe 14 using the traction device of the present invention.

  Hereinafter, embodiments of the present invention will be described in detail for each example.

  FIG. 1 shows a pipe traction device according to the first embodiment. FIG. 1A is a front view of the pipe traction device of the present invention as seen from a cross section of one of the pipes 12, and FIG. And FIG. 14 is a side view of the ends of 14 and 14 and the traction device attached thereto.

  As shown to (a), this apparatus is provided with the part comprised by connecting the two bands 16 and the two connectors 18, and having comprised it cyclically | annularly. Connection bolts 20 are fixed to both ends of the band 16 by welding. As will be described later, the connector 18 and the band 16 are connected to each other by bolting with a connecting bolt 20. The connecting bolt 20 has a role of adjusting the strength with which the pipe is tightened. Anchor bolts 22 are attached to the side surfaces of the connector 18.

  FIG. 1 (b) shows a state immediately before drawing the other tube 14 to one tube 12 in order to connect the one tube 12 and the other tube 14. A band 16 and a connector 18 as shown in FIG. 1A are wound around and fixed to the ends of one tube 12 and the other tube 14, respectively. A chain 26 is connected to the anchor bolt 22 attached to the connector 18 using a hook 26.

  The winding machine 30 operates to shorten the length of the chain 26 by operating the lever 28. In addition, although what used the chain 24 was illustrated here, various wires, such as a rope and a belt, may be used. The structure of the winding machine 30 for winding the chain 24 in a ratchet manner is known, and further description is omitted here. The winding machine 30 may be a manual type or may be driven by hydraulic pressure or the like. As will be described later, in order to pull the tube 14 without difficulty, it is preferable to connect the chain 24 to the plurality of connectors 18 and to alternately and gradually tighten them. With the traction device as described above, the end portion of the other tube 14 is drawn to the end portion of the one tube 12 fixed in the ground.

FIG. 2A is a plan view of the connector 18, and FIG. 2B is a side view of the connector 18.
The connector 18 can be produced by welding several metal plates. In order to insert the connection bolt 20 of the band 16 shown in FIG. 1, connection holes 32 are provided at two positions on the left and right of the connector 18. An anchor bolt 22 is bolted and fixed to one side surface of the connector 18. It may be fixed by welding.

  Since the pulling direction is one direction, the anchor bolt 22 may be provided only on one side surface. Further, a curved surface 19 is provided on the surface of the connector 18 that contacts the one tube 12 or the other tube 14 so that the connector 18 is in close contact with the tube without any gap. The curved surface 19 greatly affects the force with which the connector 18 grips one tube 12 or the other tube 14. If this part is in close contact, no slippage will occur when tension is applied to the chain 24.

3A is an enlarged partial cross-sectional view of a connection portion between the band 16 and the connector 18, FIG. 3B is a plan view of the band 16, and FIG. 3C is a side view of the band 16.
As shown in FIGS. 3B and 3C, the connecting bolt 20 is fixed to the end of the band 16 by a welded portion 36. Then, as shown in FIG. 3A, the connecting bolt 20 is inserted into the connecting hole 32 of the connector 18 and connected and fixed using a nut 34. By tightening the nut 34 of the connecting bolt 20, the strength with which the connector 18 is pressed against the tube can be adjusted. When the connecting bolt 20 having a T-shaped head and the band 16 having a width substantially equal to the T are welded, a strong connecting structure that does not cause twisting is realized.

The tube positioning operation will be described with reference to FIGS. 4 and 5. FIG. 4 is an explanatory diagram of the structure of the universal guidance device 38 used for positioning, and FIG. 5 is an explanatory diagram of its operation.
In order to connect the other tube 14 to one tube 12, these ends must be aligned. This is a positioning operation. As shown in FIG. 4A, the universal guidance device 38 has a structure in which jacks 42 are fixed on both sides of the gantry 40. The jack 42 includes a pair of main wheels 44 on which the pipe 14 is placed. These main wheels 44 can be moved along the gantry 40 by a jack 42.

  As shown in FIG. 4C, a bearing 50 is fixed to the tip of the cylinder 52 of the jack 42. As shown in FIG. 4B, the bearing 50 rotatably supports the main wheel 44 and the guide wheel 46. The guide wheel 46 moves while rolling on the gantry 40. The main wheel 44 is not in contact with the gantry 40. The pipe 14 is placed on the main wheel 44.

  As shown in FIG. 4C, when the cylinder 52 of the jack 42 is pushed out in the direction of arrow A, the guide wheel 46 rotates in the direction of arrow C and rolls on the gantry 40. On the other hand, the main wheel 44 rotates in the direction of arrow B while supporting the tube 14. By such an operation, the tube 14 moves the shaft back and forth and right and left as seen from the cross section as shown in FIG.

FIGS. 5A to 5C are cross-sectional views of a tube showing a method for positioning the tube 14.
First, as shown in FIG. 5A, when the distance between the pair of main wheels 44 of the universal guidance device 38 described in FIG. 4 is reduced, the tube 14 is lifted upward. Further, as shown in FIG. 5B, when only the right main wheel 44 is moved to the left side, the tube 14 moves obliquely in the upper left direction. On the other hand, as shown in FIG. 5C, when only the left main wheel 44 is moved in the right direction, the pipe 14 is moved in the diagonally upper right direction. In this way, the position of the end portion of the tube 14 can be finely adjusted, so that one tube 12 and the other tube 14 can be axially aligned.

  FIG. 6 is an explanatory view of the operation of drawing one pipe 12 that has been aligned in advance toward the other pipe 14 using the traction device of the present invention. On the left side of the figure, a plan view of the other tube 14 and one tube 12 is shown. Moreover, the enlarged view which mounted | worn the pulling device of this invention is shown in the dashed-dotted line circle | round | yen on the right side. One pipe 12 is assumed to be buried and fixed in advance, leaving its end in the ground. The other tube 14 is supported by the universal guidance device 38 in the vicinity of both ends thereof. It is assumed that the end of one tube 12 has already been positioned by these universal guidance devices 38.

  Here, as shown in the circle of the one-dot chain line, the band 16 and the connector 18 described in FIG. In this example, the chains 24 are connected to the left and right portions, respectively. The length of the chain 24 should be approximately the same with a good left / right balance. Thereafter, the levers 28 of the left and right winding machines 30 are alternately operated, and the length of the chain 24 is gradually reduced. Thereby, the other pipe | tube 14 moves little by little in the direction of arrow D. If this operation is performed carefully, the end of one tube 12 can be inserted and connected to the other tube 14.

  In the above example, the connector 18 is provided at two places on the left and right sides. However, in the case of a large-diameter pipe, it is preferable that three or more places are arranged around the pipe substantially on the axis. Further, when pulling one tube 12 in the direction of the other tube 14, it may be supported by a roller or the like that can easily move the one tube 12 in the longitudinal direction of the one tube 12 instead of the universal guidance device 38.

12 One pipe 14 The other pipe 16 Band 18 Connector 19 Curved surface 20 Connection bolt 22 Anchor bolt 24 Chain 26 Hook 28 Lever 30 Tightening machine 32 Connection hole 34 Nut 36 Welding part 38 Swivel guide device 40 Mounting base 42 Jack 44 Main wheel 46 Guide wheel 48 Rail 50 Bearing 52 Cylinder

<Configuration 3>
The band and the connector are connected to each other by a bolt fixed to the end of the band. The connector has a curved surface that is in close contact with the tube on the surface that contacts the tube. The pipe traction device according to any one of the first and second aspects, wherein an anchor bolt for connecting the two is fixed.

Claims (3)

For pulling the end of the other tube connected to the end of one fixed tube toward the one tube;
A connector that is formed by connecting a plurality of divided bands into an annular shape and winding and fixing one tube and the other end of the other tube.
A pipe traction device comprising: a chain or a wire connected to an anchor bolt attached to a connector using a hook; and a winding machine that operates to reduce the length of the chain or wire.   The pipe traction device according to claim 1, wherein the connector is arranged at two or more locations about the axis around the pipe.   The band and the connector are connected to each other by a bolt fixed to the end of the band. The connector has a curved surface that is in close contact with the tube on the surface that contacts the tube. The pipe traction device according to any one of claims 1 to 3, wherein an anchor bolt for connecting the two is fixed.

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