JP3624061B2 - Piping material transport cart - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a piping material transport carriage for transporting piping material, and more particularly to a piping material transport cart suitable for transporting piping materials used in a plant such as a nuclear power plant.
[0002]
[Prior art]
FIG. 10 shows a conventional carriage for conveying piping material. As shown in FIG. 10, a bogie 100 for transporting a piping material includes a bogie main body 101 that is formed by welding an iron plate into a U-shape and has a total length on which the piping material can be stably placed. It consists of four legs 102 welded to the bottom plate. The legs 102 have wheels 103 made of iron rollers, respectively, so that the piping material 6 can be transported without any problem even if there is some concrete debris. A suspension hook 104 is welded to the upper end of the side plate of the carriage body 101.
[0003]
Next, a method for carrying in the piping material 6 to a predetermined position while carrying the piping material 6 into the plant building using the conventional piping material carrying carriage 100 having such a configuration will be described. Since the conventional piping material transporting carriage 100 is large and heavy as shown in FIG. 10, it cannot be manually loaded. For this reason, the carry-in is performed using the lifting machine 2. That is, first, as shown in FIG. 11, the lifting machine 2 is set near the opening 4 of the building. Next, the piping material transport carriage 100 is transported by the truck 3 to the loading range of the lifting machine 2. Next, a wire is hung on the suspension hook 104 of the piping material transport cart 100, and the piping material transport cart 100 is lifted by the lifting machine 2 using this wire and suspended to the floor to which the piping material 6 is attached.
[0004]
Next, the piping material 6 is carried into the plant building. Also in this case, the piping material 6 is transported to the loading range of the lifting machine 2 by the truck 3 and then lifted by the lifting machine 2 as shown in FIG. Then, the piping material 6 is suspended on the piping material transporting carriage 100 that has been previously carried into the building, and is placed on the piping material transporting cart 100.
[0005]
Next, as shown in FIG. 13, four workers are arranged on the side surface of the piping material transport carriage 100, and the piping material 6 is transported to a predetermined mounting location by these four workers. ing.
[0006]
The piping material 6 thus transported to the predetermined mounting location is temporarily stored at a predetermined location near the piping mounting location until the piping mounting operation is performed. In this case, since there is a risk of rolling if the pipe is placed directly on the floor, the pipe material 6 having a small diameter is a pipe formed by assembling a plurality of pipes as shown in FIG. It is placed on the temporary table 8 and stored. On the other hand, in the case of the pipe material 6 having a large diameter, since the weight is heavy and it is impossible to put the pipe in and out of the pipe temporary placement table 8 by human power, as shown in FIG. 14 (b), a wire suspended from the ceiling is used. Stored hanging.
[0007]
[Problems to be solved by the invention]
As described above, the conventional piping material carrying cart is large in size and heavy, and therefore needs to be carried in by a lifting machine when carrying in the building. In addition, when transporting to another floor after being carried into the building, a lifter is necessary, and it is necessary to arrange a lifter each time. In addition, when loading and transporting piping materials to a piping material transporting cart, the piping material transporting cart is large and heavy, and therefore requires four or more workers to transport it regardless of the size and weight of the piping material. Become. Also, since the legs of the bogie for transporting piping materials are iron rollers, some scratches occur on the floor surface. For transportation on a floor surface that has been painted, it is necessary to provide rubber curing etc. to the floor. is there. Furthermore, when temporarily storing the piping material, it is necessary to install a temporary piping table or to prepare a crane or the like and suspend it with a wire.
[0008]
As described above, it takes a lot of time and labor to carry in and carry the piping material. The present invention has been made in consideration of such a situation, and an object thereof is to provide a bogie for carrying a piping material that can greatly reduce the number of steps required for carrying in and carrying the piping material.
[0009]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides a piping material transport carriage for transporting a piping material, having a shape corresponding to the outer shape of the piping material to be transported and in the axial direction of the transporting piping material. A carriage main body having a placement surface on which a part is placed; and a leg portion provided on the carriage main body; and an axial direction of the piping material on the placement surfaces of the two or more piping material transporting carriages Each of the different parts are brought into contact with each other, and the piping material is transported in a state where the piping material is fixed to each of the piping material transporting carriages , and the leg portion is provided detachably with respect to the cart body. In addition, a leg portion having a traveling wheel and a leg portion having a support bottom surface for temporary placement can be selectively attached .
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 to 9 show an embodiment of the present invention.
[0017]
As shown in FIG. 1, the piping material carrying cart 1 includes an aluminum alloy cart body 10 on which the piping material is placed, and three unfinished floor legs 20 attached to the cart body 10. ing.
[0018]
Of these, the cart body 10 has a mounting portion 11 having a shape (substantially U-shaped) obtained by cutting a cylinder into approximately half, and a mounting surface 11 a that is an inner surface of the mounting portion 11 It has a radius R slightly larger than the outer diameter of the piping material to be placed. A claw skin 17 is attached to the mounting surface 11a. The scab 17 is provided as a means for preventing displacement of the piping material 6 to be placed with respect to the placement surface 11a.
[0019]
Further, leg mounting portions 12a, 12b, 12b for mounting the unfinished floor leg portion 20 are fixed to the outer surface 11b of the placement portion 11. Among these leg mounting portions, the leg mounting portion 12a is located at the front (left side in FIG. 1 (b)) center of the cart body 10, and the leg mounting portion 12b is located at the left and right sides behind the cart body 10 (right side in FIG. 1 (b)). Each is arranged. A female screw corresponding to a screw portion 22 of an unfinished floor leg portion 20 described later is formed below the leg attachment portions 12a, 12b, 12b.
[0020]
In addition, a pair of hooks 14 are fixed to the left and right sides of the upper portion of the outer surface 11 b of the mounting portion 11 and at positions corresponding to the substantially center in the longitudinal direction of the carriage body 10.
[0021]
Moreover, the jack fixing | fixed part 16 is provided in the position corresponding to the longitudinal direction approximate center of the cart main body 10 of the bottom part of the outer side surface 11b. The jack fixing portion 16 is formed with a female screw portion 16a as shown in FIG.
[0022]
Further, hooks 15 for connecting the piping material carrying carts 1 to each other are fixed to both ends of the bottom of the outer surface 11b. The hook 15 has a hole 15a for attaching a hook rope.
[0023]
Next, the unfinished floor leg 20 will be described. As shown in FIG. 2, the unfinished floor leg portion 20 includes a shaft portion 21 and a wheel device 25. Of these, the shaft portion 21 has, at its upper end, a male screw portion 22 adapted to a female screw portion formed in the leg mounting portions 12a and 12b of the carriage body 10 and a screw head portion 23 formed below the male screw portion 22. The unfinished floor leg 20 can be attached to and detached from the carriage main body 10 by rotating the screw head 23 with a spanner or the like.
[0024]
Moreover, the wheel apparatus 25 has the roller support part 26 and the roller (wheel) 27 attached to the roller support part 26 via the axis | shaft so that rotation was possible. The roller 27 is made of iron so as not to break down even if the concrete residue is rolled up when traveling on an unfinished floor where there is a puddle or where concrete residue is scattered.
[0025]
A shaft support 28 is provided on the upper surface of the roller support 26. The shaft support portion 28 is hollowed in a cylindrical shape, and a disc-shaped bottom portion 24 formed at the lower end of the shaft portion 21 is accommodated in the shaft support portion 28. A lid 28 a is attached to the upper end of the shaft support portion 28, so that the bottom 24 does not come out of the shaft support portion 28. The bottom surface of the bottom portion 24 is in contact with the inner bottom surface of the shaft support portion 28 via a ball bearing 29, whereby the wheel device 25 is rotatable with respect to the shaft portion 21. That is, the wheel device 25 can be directed in an arbitrary direction with respect to the cart body 10, and thereby the piping material carrying cart 1 can be carried on the floor surface in an arbitrary direction. It has become.
[0026]
Also, the piping material transporting carriage 1 is finished by replacing the piping material transporting carriage 1 with each leg mounting portion 12a, 12b, 12b of the bogie body 10 in place of the unfinished floor leg 20 in order to adapt the piping material transporting cart 1 to each application. The floor leg 30 or the temporary leg 40 can be mounted.
[0027]
First, the finishing floor leg 30 will be described. As shown in FIG. 3, the finishing floor leg portion 30 includes a shaft portion 31 and a wheel device 35. Among these, the shaft portion 31 has a male screw portion 32 and a screw head 33, and the male screw portion 32 and the screw head 33 are the male screw portion 22 and the screw head 23 of the unfinished floor leg 20. It has the same configuration.
[0028]
A wheel device 35 is provided at the lower end of the shaft portion 31. The wheel device 35 includes a roller cover 36 and a hard rubber roller 38 accommodated in the roller cover 36. The reason why the hard rubber is used for the roller is to prevent the painted floor from being damaged or dented. By using the finishing floor leg 30, it is possible to eliminate the trouble of providing or removing the floor curing, and the work efficiency can be improved.
[0029]
Among these, as shown in FIG. 3B, the roller cover 36 has an upper roller cover 36a fixed to the lower end of the shaft portion 31, and a screw portion 36d screwed with the screw portion 36b of the upper roller cover 36a. It has a two-part structure composed of a lower roller cover 36c.
[0030]
Balls 37a respectively held by retainers 37b are attached to the inner surface of the upper roller cover 36a, whereby the hard rubber roller 38 accommodated in the roller cover 36 is rotatable in any direction within the roller cover 36. ing. Thereby, the bogie 1 for transporting the piping material transports the floor surface in an arbitrary direction even when the finishing floor leg 30 is attached to the carriage body 10 as in the case where the finishing floor leg 20 is attached. It is free.
[0031]
On the inner surface of the lower roller cover 36c, whale whiskers 39 are attached in three layers as an example of means for preventing dust from being caught. Even if dust galling occurs inside the roller cover 36, it can be hardened by jacking up with a hydraulic jack 50 described later and replacing it with a new finishing floor leg 30 or removing the lower roller cover 36b. Replacement of the rubber roller 38 and cleaning of the inside of the roller cover 36 can be easily performed.
[0032]
Next, the temporary placement leg 40 will be described. As shown in FIG. 4, the temporary leg portion 40 includes a shaft portion 41 and a disc-shaped seat portion 45 fixed to the lower end of the shaft portion 41. Among these, the shaft portion 41 has a male screw portion 42 and a screw head portion 43, and these male screw portion 42 and screw head portion 43 are the male screw portion 22 and screw head portion 23 of the unfinished floor leg 20. It has the same configuration.
[0033]
Next, the jack 50 for jacking up the piping transport carriage 1 will be described. As shown in FIG. 5, the jack 50 includes a casing 51 in which a hydraulic cylinder (not shown) is housed, and a shaft portion 52 that moves up and down in accordance with the operation of the hydraulic cylinder. A male screw portion 53 and a screw head portion 54 are provided on the distal end side of the shaft portion 52. The male screw portion 53 can be screwed into the female screw portion 16a of the jack fixing portion 16 (see FIG. 1B) provided on the carriage body by rotating the screw head 54 with a spanner or the like. Yes.
[0034]
Next, the operation of the present embodiment having such a configuration will be described with reference to FIGS. First, as shown in FIG. 6, a plurality of piping material carrying carts 1 are carried into a building. In this case, since the piping material carrying carriage 1 is small and light, it can be carried in manually. Note that the piping material transporting carriage 1 can be made smaller and lighter than the conventional piping material transporting carriage 100 because the conventional piping material transporting carriage 100 uses six piping materials for one piping material transporting carriage 100. Whereas it is designed on the assumption that it is conveyed by a table (see FIG. 12), the piping material carrying cart 1 according to the present invention is a state in which one piping material 6 is connected to a plurality of piping material carrying carts 1. It is because it is designed on the premise of carrying in (refer FIG. 7). The plurality of pipe material conveying carts 1 carried in are arranged on the floor surface immediately below the opening 4 of the building by an operator.
[0035]
Next, each piping material conveyance cart 1 is connected to each other. As shown in FIG. 8, this connecting work is performed by engaging the hook portion 61 of the hook rope 60 with the hole 15 a of the hook 15 provided in the cart body 10. And the piping material conveyance trolley | bogie 1 is aligned in a line so that the hook rope 60 may not loosen (refer FIG. 7). In addition, you may perform the said connection operation | work after mounting piping material.
[0036]
In parallel with this, the lifting machine 2 is set in the vicinity of the opening 4 of the building, and the piping material 6 is transported to the loading range of the lifting machine 2 by the truck 3. Next, a wire is hung on the piping material 6, and the piping material 6 is lifted by the lifting machine 2 using the wire, and a plurality of piping material transport carts 1 aligned on the floor surface of the floor to which the piping material 6 is attached. Is suspended and placed (see FIG. 6).
[0037]
In this case, since the mounting surface 11a of the bogie body 10 of the piping material transporting carriage 1 is curved with a radius R slightly larger than the outer diameter of the piping material 6, the piping material 6 is each of the piping material transporting carts 1. It fits snugly on the mounting surface 11a. In addition to this, each piping material transporting carriage 1 can move in an arbitrary direction on the floor surface. Therefore, each piping material transporting carriage 1 follows the piping material 6 and faces the longitudinal direction of the piping material 6. Align in a straight line.
[0038]
Next, the rubber band 62 is hung on the hook 14 of each piping material transport carriage 1. FIG. 7 shows the restraining force in the vertical direction with respect to the piping material 6 by the rubber band 62 and the restraining force in the horizontal direction with respect to the piping material 6 by the claw skin 17 provided on the mounting surface 11 a of the carriage body 10. In this way, the three piping material transport carriages 1 and the piping material 6 are combined as if they were integrated. That is, a combined body composed of the three piping material transport carriages 1 and the piping material 6 is formed. In addition, the hook rope 60 acts so that the piping material carrying carts 1 are not separated from each other beyond a predetermined distance, and assists the coupling of the combined body. The hook rope 60 should be connected. Although preferred, it is not necessary to do so.
[0039]
As shown in FIG. 7, the combined body composed of the piping material transport carriage 1 and the piping material 6 is moved to the piping mounting place by applying force to the piping material 6 by one or two workers. The In addition, since all the unfinished floor legs 20 can be directed in an arbitrary direction with respect to the cart body 10, when the traveling direction is to be changed, a force is applied to the piping material 6. The traveling direction can be easily changed.
[0040]
As described above, the piping material transport carriage 1 of the present embodiment designed on the assumption that a plurality of units are connected and used has the following great advantages. First, by using the piping material transporting carriage 1 shown in the present embodiment, it is possible to significantly reduce the weight and dimensions of each piping material transporting truck. That is, for example, when the conventional piping material transporting carriage 100 is used to transport the piping material 6 shown in FIG. 7, the front piping material transporting carriage 1 from the front end of the rear piping material transporting carriage 1 Although a very heavy piping material carriage 100 having a total length up to the rear end is required, the weight per one piping material transportation vehicle 1 according to the present embodiment can be made much lighter. . As a result, it is possible to sufficiently reduce the weight per one piping material transporting carriage 1 to a weight that can be lifted and transported by a human hand, and the piping material transporting carriage 1 is carried into the building. For example, it is possible to greatly reduce the number of man-hours for arranging the truck 3 for transporting the piping material transporting carriage 1 and the lifting and unloading of the truck 3 by the lifting machine 2 for carrying the carriage 3 into the building. . For this reason, the cost required for plant construction can be significantly reduced. In addition, the production cost of the piping material carrying cart itself can be reduced.
[0041]
Secondly, when a plurality of piping material transporting carts 1 according to the present embodiment are connected to form a combined body as described above, the cart substantially has the number of piping material transporting carts 1 × 3 legs. The same stability can be obtained. As a result, the number of legs provided on the piping material transporting carriage 1 can be set to the minimum number necessary for the piping material transporting carriage 1 to stand on its own. In other words, three leg portions are sufficient. Usually, a bogie for carrying a piping material used alone is provided with four or more (usually four) leg portions to ensure sufficient stability (see FIG. 10), but as described above. In the piping material transport cart 1 used by connecting a plurality of units to each other to form a combined body, the number of legs per unit can be reduced by at least one from the conventional one. For this reason, it is possible to further reduce the weight per unit of the piping material transport carriage 1.
[0042]
3rdly, the piping material conveyance trolley | bogie 1 of this embodiment can respond | correspond easily to a long piping material by increasing the number and connecting. That is, in the conventional piping material transporting carriage 100, only the piping material having a length suitable for the length of the piping material transporting cart 100 can be transported. There is no restriction on the length of the piping material. For this reason, it is possible to weld a plurality of piping materials in advance outside the building and carry them into the building as long as the welded piping materials can be carried in from the opening 4 of the building. For this reason, the welding man-hours in a building can be reduced and the construction period of plant construction can be shortened.
[0043]
Next, the pipe material 6 is temporarily placed and stored until the pipe material mounting work is actually performed by using the piping material transport carriage 1 that has formed the above-described combined body and traveled on the unfinished floor surface. How to do will be described.
[0044]
First, the piping material transport carriage 1 that has traveled on the floor is moved to a predetermined storage location (for example, near a wall). Next, the jack 50 is installed in the lower part of each piping material conveyance trolley | bogie 1 in a state as shown in FIG. Next, the male screw portion 53 of the jack 50 shown in FIG. 5 is screwed into the female screw portion 16 a of the jack fixing portion 16 of the carriage body 10. Next, the handle | steering-wheel of the jack 50 is operated, and each piping material conveyance trolley | bogie 1 is raised little by little equally. When the unfinished floor leg 20 of the piping material transporting carriage 1 is separated from the floor surface, the screw head 23 of the unfinished floor leg 20 is rotated by a spanner, and the leg mounting parts 12a, 12b of the carriage body 10 are rotated. The leg 20 for unfinished floors is removed from 12b.
[0045]
Next, after the temporary mounting leg portion 40 is attached to the leg attachment portions 12a, 12b, and 12b, the jack 50 is operated, and each piping material transporting carriage 1 is lowered little by little evenly. On the floor. FIG. 9 is a diagram showing this state.
[0046]
As described above, the piping material 6 can be stored in a stable state without having to load and unload the piping material simply by replacing the unfinished floor leg 20 for transportation with the temporary mounting leg 40. can do. For this reason, from the ceiling part currently performed at the time of conveyance of the piping material 6 to the piping temporary placement stand 8 required conventionally, the trouble of installation and removal of the temporary piping placement stand 8, and temporary placement storage of the large-diameter piping material This eliminates the need for the work of hanging the pipes and can greatly reduce the number of work steps.
[0047]
Further, when it is desired to continue running the finished floor surface with the piping material 6 placed on the carriage 1 for transporting the piping material that has traveled on the unfinished floor surface, the unfinished floor leg 20 is finished in the same manner as described above. What is necessary is just to replace | exchange for the leg part 30 for floors. Of course, the finishing floor leg 30 may be mounted before the piping material 6 is placed.
[0048]
As described above, according to the present embodiment, it is possible to obtain a bogie for conveying piping material that is light and small and suitable for conveying piping material. In addition, by exchanging the legs, the piping material carrying carriage can be adapted to each use of running on the finished floor, running on the unfinished floor, and temporary storage.
[0049]
In addition, in this embodiment demonstrated above, although the case where the trolley | bogie 1 for piping material conveyance was used exclusively on the floor surface in a building was shown, it is not limited to this, Piping material conveyance of this embodiment is carried out. The carriage 1 can be used in different environments such as outdoors, and in this case, substantially the same operational effects as those described above can be obtained. In addition, the piping material transporting carriage 1 of the present embodiment shows the best operational effect when the piping material 6 having an outer diameter corresponding to the curvature of the mounting surface 11a of the carriage body 10 is placed. A plurality of piping materials having a smaller diameter than the curved diameter of the mounting surface 11a can be mounted and used. In this case, the small-diameter piping material placed by the rubber band 62 is bundled and fixed to the carriage main body 10 to prevent the load from slipping. In addition, as described in the above embodiment (consisting of the piping material carrying carriage 1 piping material). ) A conjugate similar to the conjugate can be formed.
[0050]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain a piping transport carriage that is small and light and suitable for transporting piping materials.
[Brief description of the drawings]
FIGS. 1A and 1B are views showing an embodiment of a piping transport carriage according to the present invention, in which FIG. 1A is a front view and FIG. 1B is a side view.
2A and 2B are diagrams showing unfinished floor legs, FIG. 2A is a side view, and FIG. 2B is a front view.
FIGS. 3A and 3B are diagrams showing a finishing floor leg portion, in which FIG. 3A is a side view and FIG. 3B is an exploded sectional view of a roller cover;
FIG. 4 is a perspective view showing a temporary leg portion.
FIG. 5 is a diagram showing a jack for exclusive use for jacking up a piping carriage.
FIG. 6 is a diagram showing a state where a piping carriage and piping material are carried into a building.
FIG. 7 is a view showing a state in which piping carriages are connected to each other, piping materials are placed and fixed, and then transported.
8 is an enlarged view of a region A in FIG.
FIG. 9 is a view showing a state in which the temporary storage leg is attached to the piping transport carriage and the piping material is stored.
FIG. 10 is a perspective view showing a conventional piping transport carriage.
FIG. 11 is a diagram showing a state where a conventional piping transport carriage is carried into a building.
FIG. 12 is a diagram showing how piping material is carried into a building and placed on a conventional piping transportation carriage.
FIG. 13 is a diagram showing a state in which a piping material is being transported using a conventional piping transportation carriage.
FIG. 14 is a diagram showing a conventional temporary storage method for piping materials.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Piping material conveyance trolley 6 Piping material 10 Bogie main body 11 Placement part 20 Unfinished floor leg 30 Finishing floor leg 40 Temporary placement leg

Claims (1)

In the bogie for transporting piping materials for transporting piping materials,
A carriage main body having a shape corresponding to the outer shape of the pipe material to be transported and having a placement surface on which a part of the axial direction of the pipe material to be transported is placed;
Legs provided on the carriage body;
With
Two or more axial direction of the pipe material on the mounting surface of the piping material dolly different sites causes abutting respectively, so as to carry the piping material piping member while being fixed to the pipe member dolly And the leg portion is provided detachably with respect to the cart body, and the leg portion having a wheel for traveling and the leg portion having a support bottom surface for temporary placement can be selectively mounted. A carriage for conveying piping material, characterized by

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