JP4168246B2 - Pipe suspension device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe suspension device used in an operation of laying a pipe such as a sewer pipe in a groove formed by excavating the ground.
[0002]
[Prior art]
In general, in the construction of laying sewer pipes, it is required to lay with a precise gradient. For this reason, after installing a stringer in the shape of a gate on the road straddling the excavated groove so that it has a specified gradient using a surveying instrument at predetermined intervals, the gradient of this stringer It is necessary to have a process of stretching the string (water thread) according to the situation.
[0003]
And after the above work, in order to make the distance between the uppermost part of the sewer pipe inserted into the groove and the stringer string using a rod of a predetermined length, adjust by placing a plate or the like on the lower part of the sewer pipe After working, the sewer pipe was fixed and the earth and sand were backfilled.
[0004]
However, recently, a method of using a laser sighting device and precisely setting the gradient of a pipe laid on the basis of the emitted laser beam has become widespread.
[0005]
Further, the present applicant has developed a pipe suspension device described in Japanese Patent Application Nos. 2002-15845 and 2002-98489. For example, in the pipe suspension device described in Japanese Patent Application No. 2002-98489, as shown in FIG. 5, a sewer pipe or the like is installed between earth retaining panels or sheet piles installed on both walls of a groove formed by excavating the ground. A pipe suspending device 1 for use in a work to be performed, the pipe suspending device 1 including a pipe holder portion 2 for sandwiching a peripheral wall of a pipe 26 and a suspending device main body 3 positioned above the pipe holder portion 2. A clamp portion 4 that connects the suspension device body 3 and the pipe holder portion 2; and a telescopic support rod 5a that extends from the suspension device body 3 in a direction in which the earth retaining panel or sheet pile is pressed. The support rod 5a has a projecting portion 6 having a jack on which a pressing piece 5b is installed. The pipe holder portion 2 includes a pipe fitting plate 2a and a string-like pipe holding member 2c. And holding the pipe Those having a locking means 2b of wood.
[0006]
Then, after positioning is performed only by the pipe suspension device 1, the pipe 26 is positioned by being suspended and fixed to the pipe holder portion 2.
[0007]
According to the present invention, the pipe laying work is facilitated, and the backfilling work after laying can be simplified.
[0008]
[Problems to be solved by the invention]
Here, the clamp portion 4 is fixed to the lower end of the vertical adjustment rod 3a by the connecting piece 4a so as to be rotatable around the axis of the vertical adjustment rod 3a. This is because the pipes to be laid by rotating the clamp part 4 even when the projecting parts 6 and 6 equipped with jacks are not installed in a direction perpendicular to the plane of the left and right earth retaining panels. It is intended to be able to match the direction.
[0009]
However, when the pipe 26 to be suspended is a large pipe, the vertical adjustment rod 3a is also pulled downward by the weight of the pipe 26, so that the thread and the groove of the positioning handle 3c and the vertical adjustment are adjusted. When the positioning handle 3c is rotated when it is desired to finely adjust the position after the pipe 26 is suspended, the thread groove and the thread of the rod 3a are strongly meshed with each other. The adjustment bar 3a also rotates at the same time, and fine adjustment in the vertical direction cannot be performed, which sometimes makes positioning work difficult.
[0010]
In view of the above points, an object of the present invention is to provide a pipe suspending device that can easily perform positioning even when a large pipe is suspended and can improve workability.
[0011]
[Means for Solving the Problems]
The invention of claim 1 will be described with reference numerals used in the best mode described below.
“The pipe suspension device 10 used in the operation of laying the pipe 26 between earth retaining panels or sheet piles installed on both walls of a groove formed by excavating the ground,
The pipe suspension device 10 includes a pipe holder portion 11 that sandwiches the peripheral wall of the pipe 26, a suspension device body 12 that is positioned above the pipe holder portion 11, the suspension device body 12, and the pipe holder portion 11. And a jack having a pressing piece installed at the tip of the support rod, and a telescopic support rod extending in a direction of pressing the earth retaining panel or sheet pile from the suspension device main body 12. And provided with a tensioning portion 14 provided,
The suspension device main body 12 includes a hollow cylindrical pipe portion, a vertical adjustment rod 20 inserted into the pipe portion and threaded on the surface, and the hollow cylindrical pipe screwed into the adjustment rod 20. And positioning handles 21a and 21b located above and below the part,
The clamp portion 13, a connecting portion 13a which lower end is bored in the vertical direction of the transmural hole 13e that will be connected is penetrated rotatably the adjustment rod 20, laterally drilled in the connecting portion 13a It is assumed that the screw 13b is screwed into the hole 13d and the tip of the screw 13b is in contact with the end of the adjusting rod 20. When the thumb screw 13b is loosened, the clamp portion 13 is rotated with respect to the adjusting rod 20. The clamp part 13 was fixed to the adjusting rod 20 when the thumbscrew 13b was tightened. "
It has the characteristics.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing the entire pipe suspending device according to the present invention. The pipe suspension device 10 includes a pipe holder portion 11 that sandwiches a peripheral wall of a pipe 26, a suspension device body 12 that is located above the pipe holder portion 11, the suspension device body 12, and the pipe holder portion 11. It is set as the structure which has the clamp part 13 which connects these, and the tension part 14. As shown in FIG.
[0013]
The strut 14 is provided with a telescopic support rod 14a extending in a direction (left and right in the drawing) to press the earth retaining panel from the suspension device main body 12, and a pressing piece 14b installed at the tip of the support rod 14a. It is the composition which consists of the jack which is done. The support rod 14a is composed of an outer cylinder and a telescopic rod inserted into the outer cylinder (not shown), and a pressing piece 14b is installed at the tip of the telescopic bar. The surface of the telescopic bar is threaded, and the fixed handle 15 is screwed onto the telescopic bar.
[0014]
As shown in FIG. 2 (a), one of the telescopic rods 16a has a plurality of through holes 16b, 16b,.. A through-hole 14c is also opened at one end, and a fixing pin 16c is inserted in both through-holes 14c and 16b in the direction of arrow A, and then a hook that is rotatably installed on the head of the fixing pin 16c. It may be fixed by tilting 161c in the direction of arrow B. Then, as shown in FIG. 2 (b), if the side wall of the outer cylinder 14a of the other support rod is formed with a threaded hole 141a and a fixing screw 142a to be screwed into this is provided. It is convenient that the telescopic rod 17 does not expand and contract during transportation after the pipe suspending operation is completed.
[0015]
Here, the earth retaining panel is a panel in which two panels are connected at a predetermined interval by a beam support (not shown) and installed at a drilling site to hold the drilling site at a predetermined width. Is described in Japanese Patent Application Laid-Open No. 2000-45283, which is an application of the present applicant. In addition, it cannot be overemphasized that it replaces with a earth retaining panel and this invention can be implemented also in the case of a sheet pile.
[0016]
A left and right position adjusting unit 18 is provided below the strut 14. The left / right position adjusting portion 18 includes a threaded left / right adjustment rod 18a, a movable tube 18b screwed to the left / right adjustment rod 18a, and positioning handles 19, 19 screwed to the adjustment rod 18a. The adjustment rod 18a is disposed in parallel to the support rod 14a. Further, the movable tube 18b is welded to the suspension device main body 12, and when the movable tube 18b moves on the adjustment rod 18a, the suspension device main body 12 and the pipe holder portion 11 connected to the suspension device main body 12 are illustrated in the drawing. It can move in the left-right direction and adjust the position in the left-right direction.
[0017]
Moreover, the suspension device main body 12 is a hollow cylindrical pipe, and a vertical adjustment rod 20 whose surface is threaded is inserted. The positioning handles 21 a and 21 b are screwed to the vertical adjustment rod 20 at positions above and below the suspension device main body 12. Accordingly, the vertical adjustment rod 20 moves up and down with respect to the suspension device main body 12 so that the pipe holder portion 11 connected to the vertical adjustment rod 20 moves up and down in the drawing to adjust the vertical position. Can be done.
[0018]
As shown in FIG. 3, the positioning handle 21a located above has a hole 21c threaded on its side surface, and a fixing screw 22 such as a thumbscrew is screwed into the hole 21c so The direction adjusting rod 20 and the positioning handle 21a located above are fixed.
[0019]
Next, the vertical clamp portion 13 has a the connecting portion 13a and the fixing screw 13b and the fitting plate fixed pin 13c, connecting portion 13a has one end in the vertical direction of the adjustment rod 20 as shown in FIG. 4 you through of which transmural hole 13e is bored, one end of the vertical adjustment rod 20 is being pivotally connected to the connecting portion 13a by washer bolts 13f. The adjusting rod 20 is drilled in the connecting portion 13a, and is fixed by screwing the threaded lateral hole 13d with the butterfly screw 13b and the tip of the butterfly screw 13b coming into contact with the end of the adjusting rod 20. It is.
[0020]
Therefore, if the thumbscrew 13b is loosened, the clamp portion 13 can be rotated, so that the direction in which the pipe should be laid can be made coincident. If the thumbscrew 13b is tightened, the vertical adjustment rod 20 will not rotate together even if the positioning handles 21a, 21b are rotated after the pipe 26 is fixed to the pipe fitting plate 23. It is possible to easily perform fine adjustment. A pipe fitting plate 23 is detachably attached to the fitting plate fixing pin 13c. Although this pipe fitting plate 23 is not shown in the drawing, another pipe may be installed at a predetermined interval in the longitudinal direction of the pipe 26. Thereby, the stability when the pipe 26 is held by the string-like pipe holding member 24 described later can also be improved.
[0021]
The clamp unit 13 and the pipe fitting plate 23 have a structure in which a target holder 24 that holds a target irradiated with a laser beam emitted from a laser sighting device is detachably installed for positioning.
[0022]
Next, the pipe holder portion 24 includes a pipe fitting plate 23, a string-like pipe holding member 24, and a locking means 25 for the string-like pipe holding member 24. The pipe fitting plate 23 has a substantially semicircular fitting groove 23 a that substantially matches the diameter of the pipe 26. The pipe holding member locking means is not shown, but a part of the folded portion of the string-like pipe holding member 24 is accommodated and fixed to the pipe fitting plate 23. Then, the other locking means 25 of the pipe holding member 24 rotates a slot 25a with a groove through the string-like pipe holding member 24 by a ratchet mechanism, and the string-like pipe holding member 24 is wound around the slot 25a. In addition, a locking machine is used in which the stopper is engaged with the groove of the slot 25a so that the string-like pipe holding member 24 is not loosened. This locking means winds up the string-like pipe holding member 24 by pushing the lever 25b of the ratchet mechanism upward (toward the suspension device main body), and without loosening the wound string-like pipe holding member 24. It locks.
[0023]
In addition, it cannot be overemphasized that various embodiment can be taken in the range which does not deviate from the meaning of this invention. For example, the positioning handle 21a of the above embodiment is drilled in the threaded hole 21c or the coupling part 13a of the clamp part, and the thumbscrew 22 or 13b is screwed into the threaded hole 13d. However, the present invention is not limited to this, and a fixing screw such as a hexagon bolt or other fixing means may be used. Moreover, it is good also as a structure which drills the hole cut directly in the pipe fitting plate 23, and fixes the adjustment rod 20 of an up-down direction with a fixing screw.
[0024]
Further, as shown in FIG. 1, a threaded hole may be formed in the side wall of the suspension device main body 12 and a fixing screw 27 may be provided to be screwed into the hole. With this configuration, when positioning, the inner wall of the suspension device main body 12 and the vertical adjustment rod 20 inserted therein can always be brought into contact with each other at the same position. Therefore, it is possible to prevent the rattling apparatus main body 12 from rattling and to perform a pipe suspending operation with good positioning accuracy.
[0025]
【The invention's effect】
The invention of claim 1
“The pipe suspension device 10 used in the operation of laying the pipe 26 between earth retaining panels or sheet piles installed on both walls of a groove formed by excavating the ground,
The pipe suspension device 10 includes a pipe holder portion 11 that sandwiches the peripheral wall of the pipe 26, a suspension device body 12 that is positioned above the pipe holder portion 11, the suspension device body 12, and the pipe holder portion 11. And a jack having a pressing piece installed at the tip of the support rod, and a telescopic support rod extending in a direction of pressing the earth retaining panel or sheet pile from the suspension device main body 12. And provided with a tensioning portion 14 provided,
The suspension device main body 12 includes a hollow cylindrical pipe portion, a vertical adjustment rod 20 inserted into the pipe portion and threaded on the surface, and the hollow cylindrical pipe screwed into the adjustment rod 20. And positioning handles 21a and 21b located above and below the part,
The clamp portion 13, a connecting portion 13a which lower end is bored in the vertical direction of the transmural hole 13e that will be connected is penetrated rotatably the adjustment rod 20, laterally drilled in the connecting portion 13a It is assumed that the screw 13b is screwed into the hole 13d and the tip of the screw 13b is in contact with the end of the adjusting rod 20. When the thumb screw 13b is loosened, the clamp portion 13 is rotated with respect to the adjusting rod 20. The clamp part 13 was fixed to the adjusting rod 20 when the thumbscrew 13b was tightened. "
Therefore, even when a large pipe is suspended, it is possible to prevent the positioning handle and the vertical adjustment rod from rotating together due to the weight of the pipe, and the pipe can be positioned with high accuracy. That is, if the thumbscrew 13b is loosened, the clamp portion 13 can be rotated, so that the pipe can be aligned with the direction in which the pipe is to be laid, and if the thumbscrew 13b is tightened, the pipe fitting plate 23 is connected to the pipe fitting plate 23. Even if the positioning handles 21a and 21b are rotated after 26 is fixed, the vertical adjustment rod 20 does not rotate together, so that fine adjustment of positioning can be easily performed.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a pipe suspension apparatus according to the present invention.
FIG. 2 is an explanatory view showing a fixing means for the telescopic rod.
FIG. 3 is an explanatory view showing a positioning handle and a fixing screw.
FIG. 4 is an explanatory view showing a means for fixing the end of the adjustment bar in the vertical direction.
FIG. 5 is an explanatory diagram of a conventional pipe suspending device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Pipe suspension apparatus 11 Pipe holder part 12 Suspension apparatus main body 13 Clamp part 13a Connection part 13b, 22 Thumb screw
13d lateral hole
13e Vertical through hole 14 Stretched portion 15 Fixed handle 18 Left / right position adjusting portion 20 Vertical adjusting rod 21a, 21b Positioning handle 23 Pipe fitting plate

Claims (1)

A pipe suspension device used in an operation of laying a pipe between earth retaining panels or sheet piles installed on both walls of a groove formed by excavating the ground,
The pipe suspension device includes a pipe holder portion that sandwiches the peripheral wall of the pipe, a suspension device body that is positioned above the pipe holder portion, and a clamp portion that connects the suspension device body and the pipe holder portion. A telescopic support rod extending in the direction of pressing the earth retaining panel or sheet pile from the suspension device main body, and a strut portion provided with a jack in which a pressing piece is installed at the tip of the support rod age,
The suspension device body includes a hollow cylindrical pipe portion, a vertical adjustment rod inserted into the pipe portion and threaded on the surface thereof, and an upper portion of the hollow cylindrical pipe portion screwed into the adjustment rod. And a positioning handle located below,
Said clamp portion, and a connecting portion for the lower end of the adjusting rod is bored transmembrane hole in the vertical direction that will be connected is penetrated rotatably, threadably in transverse holes formed in the connecting portion Then, assuming that the tip has a thumbscrew that abuts the end of the adjustment rod, the clamp can be rotated relative to the adjustment rod when the thumbscrew is loosened. when it had been the pipe hanging equipment being characterized in that so as to secure the clamping part against the adjustment rod.

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