JP2017218773A - Pipe lifting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe lifting device that can safely holds and lift a plurality of pipes with good workability and is also easy to handle.SOLUTION: This pipe lifting device 10 comprises: an end retainer 20 which retains one-end parts of a plurality of pipes P; an intermediate retainer 50 which retains intermediate parts of the plurality of pipes P; and coupling means for coupling both the retainers. The end retainer 20 has a frame body part 21 which is in a frame shape surrounding the plurality of pipes P and also has a part thereof opened and closed, fastening means for retaining the part in a closed state, and an end plate 23 which abuts on end faces of the plurality of pipes P to restrict them from moving axially, and the intermediate retainer 50 has a frame body part 51 which is in a frame shape surrounding the plurality of pipes P and has a part thereof opened and closed, fastening means for fastening the part in a closed state, and a draw and hook part 80 for drawing and hooking a lifter for lifting.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pipe lifting device for lifting, for example, a pipe for scaffolding used at a high place in a water treatment facility or the like.

  Conventionally, when construction is performed at a high place in a water treatment facility such as a water tank or a tank, a scaffold is formed by a plurality of pipes. At this time, if the space for carrying materials in the water treatment facility is small, it is necessary to lift the pipe diagonally.

  For example, as shown in FIG. 18, both longitudinal ends of a plurality of pipes P are bound together by number wires 2 and 2, and one belt 3 thicker than the number wires 2 is attached to both longitudinal ends of the plurality of pipes P. The upper end of the belt 3 is hooked by a lifting tool 5 and lifted by a crane. In addition, the holding bag 7 is attached to the end portion side of the pipe P that is lower when the pipe P is lifted to prevent the pipe P from falling off.

  In addition, as a means for holding a plurality of pipes, the following Patent Document 1 is provided with a rectangular base frame that can be secured by mounting a long material, and is erected only at one end in the longitudinal direction. A wheel that is rotatable in the longitudinal direction of the frame at one end of the frame on the end regulating plate side, and the frame is disposed at both ends in the longitudinal direction of the frame. There is described a hanging jig for a long material in which suspension wires having different lengths for lifting a wheel in an inclined posture where the wheel is positioned at the lower end of the inclination are connected.

Utility Model Registration No. 2516844

  However, as shown in FIG. 18, in the lifting method in which a plurality of pipes P are bound by the number 2, the plurality of pipes P are bound by the number 2, the belt 3 is wound, and the holding bag 7 for preventing the drop is attached. The work to do is cumbersome and time consuming, and there is a problem in workability.

  Further, in the hanging jig of Patent Document 1 described above, since a plurality of pipes must be placed on a long rectangular frame and then fastened with a wire or the like, the work is complicated. It remains the same. Furthermore, since the underframe has a long shape extending to a predetermined length in order to hold the pipe, it is difficult to handle in a water treatment facility or the like when the material loading space or the work space is small. .

  Accordingly, an object of the present invention is to provide a pipe lifting device that can lift and hold a plurality of pipes safely with good workability and is easy to handle.

  In order to achieve the above object, the present invention is a pipe lifting device for lifting a plurality of pipes, and holds an end holder for holding one end of the plurality of pipes and an intermediate part of the plurality of pipes. An intermediate holder; and an end holder and a connecting means for connecting the intermediate holder. The end holder has a frame shape surrounding a plurality of pipes, and a part of the end holder is opened and closed. A frame body part that can receive the pipe, a fastening means that holds a part of the frame body part closed, and an end plate that abuts against the end surfaces of the plurality of pipes and restricts axial movement. The intermediate holder has a frame shape surrounding a plurality of pipes, a part of which opens and closes to receive a plurality of pipes, and a part of the frame part Hook the tightening means to keep the closed and the lifting device For, and having a pull hook.

  According to the present invention, the end holder is positioned at one end of the pipe, and the intermediate holder is arranged so as to be farther from the end holder than the position where the entire center of gravity is located. Insert one end of the pipe into the frame part of the end holder, insert the intermediate part into the frame part of the intermediate holder, and close the frame part by the fastening means of each holder The end holder and the intermediate holder were connected by the connecting means, and the end holder was tilted down by hooking the lifting tool on the hook of the intermediate holder and pulling it up. In the state, multiple pipes can be lifted. At this time, since the end holder is connected to the intermediate holder by the connecting means and has an end plate that abuts against the end surfaces of the plurality of pipes to restrict axial movement, there is a concern that the pipe may fall off. Absent. In this way, the plurality of pipes can be lifted while being safely held with good workability by the pair of holders. Further, since the end holder and the intermediate holder are separated, it is easy to carry, the storage space and the work space may be small, and the handleability is good.

  In the pipe lifting device of the present invention, the end holder and the frame body portion of the intermediate holder include a bottom plate, a top plate disposed to face the bottom plate at a predetermined interval, the bottom plate, Both side plates arranged on both sides of the top plate, a shelf plate arranged in parallel between the bottom plate and the top plate and partitioning the inside of the frame body into a plurality of stages, the bottom plate and / or the shelf plate A positioning projection that is inserted between pipes placed on the pipe and restricts lateral movement of the pipe, and the top plate and the shelf plate can be opened and closed. Preferably, the means is configured to hold the top plate and the shelf plate in a closed state.

  According to this aspect, pipes are arranged on the bottom plate, a shelf plate is placed thereon, pipes are arranged on the shelf plate, and finally the top plate is covered, and the top plate and the shelf plate are closed by the fastening means. By holding in this state, a plurality of pipes can be stacked in a plurality of stages and held by the end holder and the intermediate holder in a state where the lateral movement of the pipe is restricted by the positioning protrusions.

  In the pipe lifting device of the present invention, the shelf plate and / or the top plate has a pressing projection that can be contacted from above in the radial center of the upper portion of the pipe positioned by the positioning projection. It is preferable to be provided.

  According to this aspect, the plurality of pipes can be held without backlash by pressing the center in the radial direction of the upper part of the pipe placed on the bottom plate or the shelf plate with the lateral movement restricted by the positioning protrusion. can do.

  In the pipe lifting apparatus of the present invention, the shelf plate of the end holder is openable and closable by connecting one end portion thereof to the side plate so as to be rotatable. The one end of the intermediate holder is pivotably connected to the end plate, and the shelf of the intermediate holder is pivotally connected to one of the side plates. It is preferable that the top plate of the intermediate holder is openable and closable by connecting one end of the top plate to the other of the side plates.

  According to this aspect, in the end holder, since one end portion of the shelf plate is rotatably connected to the side plate, it can be opened and closed left and right, and one end portion of the top plate is rotated to the end plate. Since it is connected so that it can be opened and closed in front and back. In this case, since the top plate and the end plate are connected to each other, the end portions of the plurality of pipes can be firmly held, and the falling off of the pipes can be more reliably prevented. Further, in the intermediate holder, one end of the shelf plate is rotatably connected to one of the side plates, and one end portion of the top plate is rotatably connected to the other of the side plates. Can be opened and closed to the left and right, improving workability and maintaining the holding strength of the pipe in a well-balanced manner.

  In the pipe lifting device of the present invention, it is preferable that the connecting means has an adjusting means capable of adjusting a distance between the end holder and the intermediate holder.

  According to this aspect, even when the distance between the end holder and the intermediate holder is changed according to the length of the pipe, it is possible to flexibly cope with it, and hold the pipe in each holder. After that, when the connecting means is stretched smoothly by the adjusting means, the intermediate holder and the end holder are displaced in the axial direction when the hanging tool is hooked on the hook of the intermediate holder and pulled up. Can be suppressed.

  In the pipe lifting device of the present invention, it is preferable that the connecting means is a chain, and the adjusting means is a turnbuckle.

  According to this aspect, since the connecting means is made of a chain, sufficient tensile strength can be imparted, and the end holder and the intermediate holder can be changed by changing the position to be hooked on the hook and the mounting position of the turnbuckle. Can be adapted to any distance. Further, by rotating the turnbuckle, it is possible to obtain a tensioned state relatively easily without sagging.

  In the pipe lifting device according to the present invention, the tightening means includes a bolt having one end pivotally supported on the bottom plate or the side plate, a nut screwed to the bolt, and the bolt when the bolt is rotated. A first groove formed on the top plate, an open / close plate attached to the top plate so as to be openable and closable and overlapping the first groove of the top plate when closed, and the open / close plate being closed It is preferable to have the 2nd groove | channel provided in the said opening-and-closing plate which cross | intersects the said 1st groove | channel which receives the said bolt.

  According to this aspect, with the top plate closed and the open / close plate open, the bolt is rotated and inserted into the first groove, and then the open / close plate is closed while the bolt is inserted into the second groove. Then, by screwing the nut onto the bolt and fastening the opening and closing plate, the bolt is surrounded by the first groove and the second groove so that it cannot be pulled out in any direction. Can be prevented.

  According to the present invention, the end holder has the end plate that is connected to the intermediate holder by the connecting means and that abuts against the end faces of the plurality of pipes to restrict axial movement. There is no worry of falling off, multiple pipes can be safely held and lifted with good workability, and the end holder and intermediate holder are separated, making it easy to carry, storage space and work Space can be small, and handling is good.

It is a perspective view showing one embodiment of a pipe lifting device concerning the present invention. It is a side view of the pipe lifting apparatus. In the edge part holder which comprises the pipe lifting apparatus, it is a perspective view of the state which opened a part of frame part. It is a top view of the same edge part holder. It is a front view of the same edge part holder. It is a rear view of the same edge part holder. It is sectional drawing in the AA arrow line of FIG. It is a perspective view in the state where a part of frame part was opened in the intermediate holder which constitutes the pipe lifting device. It is a top view of the same edge part holder. It is a front view of the same edge part holder. It is sectional drawing in the BB arrow line of FIG. It is the perspective view which shows the usage method of the same pipe lifting apparatus, and shows the 1st usage method. It is a perspective view which shows the 2nd usage method of the pipe lifting apparatus. It is a perspective view which shows the 3rd usage method of the pipe lifting apparatus. It is a perspective view which shows the 4th usage method of the pipe lifting apparatus. It is explanatory drawing which shows the state at the time of lifting a pipe using the pipe lifting apparatus. The state when the pipe is lifted and installed at a predetermined location using the pipe lifting device is shown, (a) is an explanatory view showing the first state, (b) is an explanatory view showing the second state, c) is an explanatory view showing a third state. It is explanatory drawing which shows the conventional pipe lifting state.

  Hereinafter, an embodiment of a pipe lifting device of the present invention will be described with reference to the drawings.

  The pipe lifting device 10 (hereinafter simply referred to as “lifting device 10”) of this embodiment is for lifting a plurality of pipes P. As shown in FIGS. An end holder 20 that holds one end, an intermediate holder 50 that holds the intermediate portions of the plurality of pipes P, and a connecting means that connects the end holder 20 and the intermediate holder 50 (in this embodiment, a chain 90). ).

  First, the end holder 20 will be described with reference to FIGS. The end holder 20 has a frame shape that surrounds the plurality of pipes P, a frame body portion 21 that is partially opened and closed to receive the plurality of pipes P, and one end of the frame body portion 21. There are fastening means for holding the part closed, and an end plate 23 that abuts against the end faces of the plurality of pipes P and restricts axial movement.

  As shown in FIGS. 3 and 7, the frame body portion 21 includes a bottom plate 24, a top plate 25 disposed opposite to the bottom plate 24 with a predetermined interval, and both sides of the bottom plate 24 and the top plate 25. Both side plates 27 and 28 are arranged, and a plurality of shelf plates 29 and 30 are arranged in parallel between the bottom plate 24 and the top plate 25 and partition the inside of the frame body portion 21 into a plurality of stages.

  The bottom plate 24 has a long plate shape, and is one end of a width direction orthogonal to the longitudinal direction (hereinafter, simply referred to as “width direction”. The same applies to the end plate 23, the top plate 25, and the shelf plates 29 and 30). From the section, the end plate 23 is erected at a right angle to the bottom plate 24. The top plate 25 has a long plate shape adapted to the bottom plate 24, and one end portion in the width direction orthogonal to the longitudinal direction can be rotated to the upper end portion of the end plate 23 via a hinge 25a. It is connected and can be opened and closed.

  Further, a side plate 27 is erected at a right angle from one longitudinal end portion of the bottom plate 24 and is connected to one longitudinal end portion of the end plate 23. Further, as shown in FIGS. 3 and 7, the side plate 28 is erected at a right angle from the other longitudinal end of the bottom plate 24, and is connected to the other longitudinal end of the end plate 23. The side plate 27 is erected higher than the side plate 28.

  Further, the shelf plate 29 has one longitudinal end portion connected to the upper end portion of the higher side plate 27 via a hinge 29a so as to be openable and closable. On the other hand, one end of the shelf plate 30 in the longitudinal direction is pivotably connected to the upper end of the lower side plate 28 via a hinge 30a so that the shelf plate 30 can be opened and closed. That is, in this embodiment, the shelf plates 29 and 30 are connected to the side plates 27 and 28 of the frame body portion 21 so that they can be alternately opened and closed on the left and right sides so as to have different arrangement heights. In a state where both the shelf boards 29 and 30 are closed, the shelf board 29 is arranged above and the shelf board 30 is arranged below (see FIG. 7).

  Furthermore, an end plate 23a having an elongated plate shape is provided along the longitudinal direction of the bottom plate 24 at a position near the end plate 23 in the width direction of the bottom plate 24 (see FIG. 3). At one end in the width direction of the shelf plates 29 and 30 on the end plate 23 side, an end plate 23a having an elongated plate shape is provided along the longitudinal direction of the shelf plates 29 and 30 (see FIG. 7). . In this embodiment, the end surfaces of a plurality of pipes P abut against these end plates 23a to restrict axial movement thereof. In addition, you may regulate the axial direction movement of the pipe P by the said end plate 23, without providing these end plates 23a.

  Further, as shown in FIG. 3 and FIG. 7, the bottom plate 24 and the shelf plates 29 and 30 are on the upper surface side (pipe placement surface side) and on the inner surface side of the top plate 25 (surface facing the pipe P). And the partition plates 31 and 31 extended along the width direction of each board are provided in the position which opened the width | variety of one pipe from the longitudinal direction both ends at predetermined height.

  As shown in FIG. 7, the partition plates 31 and 31 of the bottom plate 24 abut against the lower surface of the shelf plate 29 in a closed state, and the partition plates 31 and 31 of the shelf plate 29 are in a closed shelf plate 30. The partition plates 31, 31 of the shelf plate 30 are in contact with the partition plates 31, 31 of the top plate 25, so that each of the longitudinal end portions of the frame body portion 21 has three stages in the vertical direction. The pipes P are held, and the plurality of pipes P are held side by side in the upper and lower three stages by the shelf plates 29 and 30 at the central portion excluding both ends in the longitudinal direction of the frame body portion 21. .

  Furthermore, the bottom plate 24 and the shelf plates 29 and 30 are provided with positioning protrusions 32 that are inserted between the pipes P placed on the plates and restrict the lateral movement of the pipes P. . The “lateral movement” of the pipe P means movement in a direction perpendicular to the axial direction of the pipe P.

  In this embodiment, as shown in FIG. 3 and FIG. 7, the bottom plate 24 and the shelf plates 29 and 30 are arranged in pairs in the width direction between the partition plates 31 and 31. A plurality of sets of positioning protrusions 32, 32 are provided with a space where the pipe P can be arranged. In this embodiment, four pairs of positioning protrusions 32, 32 are arranged in pairs, and five pipes P are arranged in parallel with the partition plate 31, 31 in the longitudinal direction of the frame body 21. Can be arranged. There are no particular limitations on the shape and number of positioning protrusions.

  In addition, the shelf plates 29 and 30 are provided with presser protrusions 33 that can come into contact with the center in the radial direction of the upper portion of the pipe P positioned by the positioning protrusions 32 and 32 from above. In this embodiment, as shown in FIGS. 3, 13, and 14, a presser protrusion 33 having a narrow plate shape is formed on the lower surface side of the shelf plates 29 and 30 (on the side opposite to the pipe placement surface). A plurality of sets of two shelves are provided in the width direction of the shelves 29 and 30 with a space at which they can be contacted from above in the radial center of the upper portion of the adjacent pipes P. The presser protrusion may be provided on the top plate 25.

  Further, from the lower surface side of the other end portion in the longitudinal direction of the shelf plate 29, an outer plate 29b is disposed so as to be arranged above the one end portion side in the longitudinal direction of the shelf plate 30 when the shelf plate 29 is closed. Yes. Further, from the inner surface side of the both ends in the longitudinal direction of the top plate 25, outer plates 34, 34 arranged above the both ends in the longitudinal direction of the shelf plate 29 when the top plate 25 is closed are respectively suspended. Has been.

  The side plates 27 and 28 are pivotally supported at one end of a bolt 35 having a long bolt shape extending long. Here, as shown in FIGS. 5 to 7, one end of the bolt 35 is provided on the outer surface of the side plate 27, 28 on the lower end side, on the opening side of the frame body portion 21, and the support shaft 35 a (see FIG. 7). The other end of the bolt 35 rotates so as to approach and separate from the side plates 27 and 28. Further, a ring-shaped connecting portion 38 is projected from the opening side of the frame body portion 21 of the support portion 37, and one end of the chain 90 is connected to the connecting portion 38 via a clamp 92. (See FIG. 2).

  Further, as shown in FIG. 3, the top plate 25 is on the other end side in the width direction opposite to the hinge 25a, and the projecting plates 40, 40 are directed outward from both longitudinal ends. Projected. Each protruding plate 40 is formed with a first groove 40a cut out along the longitudinal direction of the top plate 25 (see FIG. 3), and accepts the other end when the bolt 35 is rotated. (See FIG. 15).

  Further, as shown in FIGS. 3, 4, and 15, an open / close plate 41 having a long plate shape is attached to the outer surface side of the top plate 25 through a pair of hinges 41 b and 41 b so as to be openable and closable. Yes. When the opening / closing plate 41 is closed, both longitudinal ends thereof overlap the first grooves 40a, 40a. Further, at both ends in the longitudinal direction of the opening / closing plate 41, the bolt 35 is received when the opening / closing plate 41 is closed, and is cut out along the width direction of the top plate 25 so as to intersect the first groove 40a. A second groove 41a is provided (see FIGS. 3 and 15).

  When holding the plurality of pipes P on the end holder 20 having the above structure, the pair of side plates 27 and 28 and the top plate 25 of the frame body portion 21 are opened on the bottom plate 24. After arranging the plurality of pipes P (see FIG. 12), the shelf board 30 is closed (see FIG. 13), and after arranging the plurality of pipes P on the shelf board 30, the shelf board 29 is closed (see FIG. 14). After arranging the plurality of pipes P on the shelf plate 29, the top plate 25 is closed (see FIG. 15). In this state, the respective bolts 35 pivotally supported on the side plates 27 and 28 are respectively rotated, and the other end portion is inserted into the first groove 40a. Then, the opening / closing plate 41 is closed and the bolts are inserted into the second groove 41a. By inserting the other end of 35 (see FIG. 15) and screwing the nut 43 to the other end of each bolt 35, the open / close plate 41 is fastened and fixed. As shown in FIG. The top plate 25 and the shelf plates 29 and 30 of the part 21 are held in a closed state, and a plurality of pipes P are held in a stacked state.

  As described above, in this embodiment, the bolt 35, the nut 43, the first groove 40a, and the second groove 41a are in a state in which a part of the frame body portion 21 in the present invention is closed. It serves as a “clamping means” for holding. The nuts 43 and 43 screwed to the other ends of the pair of bolts 35 have annular portions, and hooks 45 and 45 connected by wires 46 are hooked on these annular portions, The nuts 43 are connected to each other so that the nut 43 is prevented from falling off (see FIG. 4).

  Next, the intermediate holder 50 will be described with reference to FIGS. The intermediate holder 50 has a frame shape surrounding the plurality of pipes P, and a part of the frame body part 21 is opened and closed to receive the plurality of pipes P, and a part of the frame body part 21 is closed. A fastening means for holding the lifting device 5 and a hooking portion 80 for hooking the lifting device 5 for lifting.

  As shown in FIG. 8 and FIG. 11, the frame body portion 51 includes a bottom plate 54, a top plate 55 that is arranged to face the bottom plate 54 with a predetermined interval, and both sides of the bottom plate 54 and the top plate 55. Both side plates 57 and 58 are arranged, and a plurality of shelf plates 59 and 60 are arranged in parallel between the bottom plate 54 and the top plate 55 and partition the inside of the frame body portion 51 into a plurality of stages.

  The bottom plate 54 has a long plate shape, a side plate 57 is erected at a right angle from one longitudinal end of the bottom plate 54, and a side plate 58 is erected at a right angle from the other longitudinal end of the bottom plate 54. (See FIGS. 8 and 11). The side plate 57 has a rectangular plate shape with a predetermined height, and the side plate 58 is referred to as a width direction orthogonal to the longitudinal direction of the bottom plate 54 (hereinafter simply referred to as “width direction”. The bottom plate 54, the top plate 55, and the shelf plate). The same applies to 59 and 60), and has a plate shape having upper end portions 58a and 58b having stepped shapes with different heights (the upper end portion 58a is higher than the upper end portion 58b) (see FIG. 10).

  The top plate 55 has a long plate shape suitable for the bottom plate 54, and one end portion in the longitudinal direction thereof is rotatably connected to the upper end portion of the side plate 57 via a hinge 55a so as to be opened and closed. Yes. Further, the shelf plate 59 has one end portion in the longitudinal direction connected to a higher upper end portion 58a of the side plate 58 via a hinge 59a so as to be pivotable. On the other hand, one end of the shelf plate 60 in the longitudinal direction is rotatably connected to a lower upper end portion 58b of the side plate 58 via a hinge 60a so that the shelf plate 60 can be opened and closed. That is, in this embodiment, a pair of shelf plates 59 and 60 having different arrangement heights are connected to one side plate 58 of the frame body portion 51 so as to be openable and closable, and the top plate 55 is opened and closed to the other side plate 57. It is designed to be connected as possible.

  Further, as shown in FIGS. 8 and 11, the bottom plate 54, the upper surface side (pipe mounting surface side) and the lower surface side of the shelf plate 59, the upper surface side of the shelf plate 60, the inner surface side of the top plate 55 (pipe P and Partition plates 61, 61 extending along the width direction of each plate are provided at a predetermined height at a position that is one pipe wide from both ends in the longitudinal direction. .

  The partition plates 61 and 61 of the bottom plate 54 abut against the partition plates 61 and 61 on the lower surface side of the closed shelf plate 59 and the lower surface of the shelf plate 60 in the closed state, and The plates 61, 61 come into contact with the partition plates 61, 61 on the upper surface side of the shelf plate 59 and the partition plates 61, 61 of the shelf plate 60 (see FIGS. 8 and 11), so that the length of the frame body portion 51 is increased. Pipes P are held in three upper and lower stages at both ends in the direction, and a plurality of pipes P are arranged side by side by shelves 59 and 60 in the central portion excluding both ends in the longitudinal direction of the frame 51. It is designed to be held in three stages.

  In addition, the bottom plate 54 and the shelf plates 59 and 60 are provided with positioning protrusions 62 that are inserted between the pipes P placed on the plates and restrict lateral movement of the pipes P. . In this embodiment, as shown in FIGS. 8, 13, and 14, the bottom plate 54 and the shelf plates 59, 60 are provided in pairs in the width direction between the partition plates 61, 61. A plurality of set positioning protrusions 62 and 62 are provided at intervals where the pipe P can be arranged. In this embodiment, four sets of two positioning projections 62 and 62 are arranged, and five pipes P are juxtaposed in the longitudinal direction of the frame body portion 21 between the partition plates 61 and 61. Can be arranged. There are no particular limitations on the shape and number of positioning protrusions.

  Further, the shelf plates 59 and 60 are provided with presser protrusions 63 that can be brought into contact with the center in the radial direction of the upper portion of the pipe P positioned by the positioning protrusions 62 and 62 from above. In this embodiment, as shown in FIG. 8 and FIG. 11, a presser protrusion 63 having a narrow plate shape is formed on the lower surface side (the side opposite to the pipe mounting surface) of the shelf plates 59 and 60. A plurality of sets are provided in pairs in the width direction of 59 and 60, with a space that can be contacted from above at the radial center of the upper part of the adjacent pipes P. The presser protrusion may be provided on the top plate 55.

  Further, from the inner surface side of the other end portion in the longitudinal direction of the top plate 55, the step shape is adjusted so as to align with the stepped upper end portions 58a, 58b of the side plate 58 when the top plate 55 is closed. An outer plate 64 is vertically provided (see FIGS. 8 and 10).

  The side plate 58 is pivotally supported by one end of a bolt 65 having a long bolt shape that extends long. Here, as shown in FIGS. 10 and 11, one end of the bolt 65 is provided on the outer surface on the lower end side of the side plate 58 and in the center in the width direction via a support shaft 65 a (see FIG. 11). The other end of the bolt 65 is pivoted so as to approach and separate from the side plate 58.

  Further, as shown in FIGS. 8 and 9, a ring-shaped connecting portion 68 projects from the outer surface on the lower end side of the side plates 57 and 58 and on one end side in the width direction. As shown in FIG. 2, one end of a known turnbuckle 94 is connected to the connecting portion 68 via a clamp 92. The turnbuckle 94 can be adjusted in its overall length by rotating. The other end of the chain 90 having one end connected to the end holder 20 is connected to the other end of the turnbuckle 94 via a clamp 92.

  Therefore, the end holder 20 and the intermediate holder 50 are connected via the chain 90, and the end holder 20 and the intermediate holder are adjusted by adjusting the length of the end of the turnbuckle 94 as appropriate. The distance from the tool 50 can be adjusted. That is, the chain 90 constitutes a “connecting means” in the present invention for connecting the end holder 20 and the intermediate holder 50, and the turn buckle 94 adjusts the distance between the end holder 20 and the intermediate holder 50. It constitutes a possible “adjustment means” in the present invention. In addition, as a connection means, a wire, a rope, etc. may be sufficient, for example, and an adjustment means is not limited to the turnbuckle 94, either.

  Further, as shown in FIG. 8, a projecting plate 70 projects outwardly from the other end of the top plate 25 in the longitudinal direction opposite to the hinge 25a. The projecting plate 70 is formed with a first groove 70a cut out along the longitudinal direction of the top plate 55 (see FIG. 8), so that the other end is received when the bolt 65 is rotated. (See FIG. 15).

  Further, as shown in FIGS. 9 and 15, on the outer surface side of the top plate 55, on the other end side in the longitudinal direction, an elongated strip-like opening and closing plate 71 can be opened and closed via a hinge 71b. Installed. When the opening / closing plate 71 is closed, the opening / closing plate 71 overlaps the first groove 70a. Also, at one end in the longitudinal direction of the opening / closing plate 71, the bolt 65 is received when the opening / closing plate 71 is closed, and is cut out along the width direction of the top plate 55 so as to intersect the first groove 70a. A second groove 71a is provided (see FIG. 15). As shown in FIGS. 9 and 15, an annular portion 72 is fixed to one longitudinal end portion (on the hinge 55 a side) on the outer surface side of the top plate 55.

  When holding the plurality of pipes P in the intermediate holder 50 having the above structure, the pair of shelf plates 59 and 60 and the top plate 55 of the frame body 51 are opened on the bottom plate 54. After arranging the plurality of pipes P (see FIG. 12), the shelf 60 is closed (see FIG. 13), and after arranging the plurality of pipes P on the shelf 60, the shelf 59 is closed (see FIG. 14). After arranging the plurality of pipes P on the shelf plate 59, the top plate 55 is closed (see FIG. 15). In this state, the bolt 65 pivotally supported by the side plate 58 is rotated, and the other end portion is inserted into the first groove 70a. Then, the open / close plate 71 is closed, and the other end portion of the bolt 65 is inserted into the second groove 71a. Is inserted (see FIG. 15), and the nut 73 is screwed onto the other end of each bolt 65, whereby the open / close plate 71 is fastened and fixed, and as shown in FIG. 55 and the shelf boards 59 and 60 are held in a closed state, and a plurality of pipes P are held in a stacked state.

  As described above, in this embodiment, the bolt 65, the nut 73 having the annular portion, the first groove 70a, and the second groove 71a constitute a part of the frame body portion 51 in the present invention. "Tightening means" that keeps it closed. A hook 74 and a clamp 75 connected by a wire 76 are hooked on the annular portion of the nut 73 and the annular portion 72 to prevent the nut 73 from falling off. Moreover, the nut 73 is connected also to the support part 67 through the wire 77 (refer FIG. 10).

  Further, as shown in FIGS. 8, 10, and 11, an annular pull is formed on the outer surface of the side plate 57 on the proximal end side in the standing direction of the side plate 57 and at a position near one end in the width direction. A hooking portion 80 is provided, and a similar hooking portion 80 is provided on the outer surface of the side plate 58 at a position facing the hooking portion 80 provided on the side plate 57. Then, as shown in FIGS. 15 and 16, both ends of the wire 1 are hooked on the hooks 80 and 80, and the hanger 5 is hooked on the wire 1, so that the intermediate holder 50 can be lifted.

  Next, the usage method and effect of the lifting device 10 having the above configuration will be described.

  First, as shown in FIG. 1, the top plate 25, the shelf plate 29 and the shelf plate 30 are opened from the frame body portion 21 of the end holder 20, and the top plate 25 is opened from the frame body portion 51 of the intermediate holder 50. The board 55, the shelf board 59, and the shelf board 60 are opened. As shown in FIG. 2, the connecting portion 38 of the end holder 20 and the connecting portion 68 of the intermediate holder 50 are connected to each other by a chain 90 via a clamp 92. The connecting portion 38 of the end holder 20 and the connecting portion 68 of the intermediate holder 50 are connected to each other by a chain 90 via a clamp 92 after holding the plurality of pipes P by the holders 20 and 50. You may let them.

  In the above state, one end portions of the plurality of pipes P are respectively arranged in the lateral direction on the bottom plate 24 of the end holder 20 and the intermediate portions of the plurality of pipes P are horizontally disposed on the bottom plate 54 of the intermediate holder 50. Each is arranged in the direction (see FIG. 12), and the shelf 30 of the end holder 20 and the shelf 60 of the intermediate holder 50 are closed (see FIG. 13). Thereafter, the plurality of pipes P are respectively arranged in the lateral direction on the shelf plate 30 of the end holder 20 and the shelf plate 60 of the intermediate holder 50, so that the shelf plate 29 and the intermediate holder 50 of the end holder 20 are arranged. Each shelf board 59 is closed (see FIG. 14). After that, a plurality of pipes P are arranged laterally on the shelf plate 29 of the end holder 20 and the shelf plate 59 of the intermediate holder 50, respectively, and the top plate 25 and the intermediate holder of the end holder 20 are arranged. Each of the 50 top plates 55 is closed (see FIG. 15).

  Next, as shown in FIG. 15, each bolt 35 is rotated in a state where the opening / closing plate 41 is opened from the top plate 25 of the end holder 20, and the other end portion is set to each first groove of the top plate 25. After the insertion into 40a, the opening / closing plate 41 is closed, the other end of the bolt 35 is inserted into each second groove 41a, and then the nut 43 is screwed into the other end of each bolt 35, thereby opening and closing the opening / closing plate 41. Tighten and fix. In addition, with the opening / closing plate 71 opened from the top plate 55 of the intermediate holder 50, the bolt 65 is rotated and its end is inserted into the first groove 70 a of the top plate 55, and then the opening / closing plate 71 is closed. Then, the other end portion of the bolt 65 is inserted into the second groove 71a, and then a nut 73 is screwed to the other end portion of the bolt 65 to fasten and fix the open / close plate 71.

  At this time, in this embodiment, the top plates 25 and 55 of the holders 20 and 50 are closed, the open / close plates 41 and 71 are opened, the bolts 35 and 65 are rotated, and the first Insert the first groove 40a, 70a into the second groove 41a, 71a, close the open / close plates 41, 71, and screw the nuts 43, 73 onto the bolts 35, 65. By tightening and fixing the opening and closing plates 41 and 71, the periphery of the bolts 35 and 65 is surrounded by the first grooves 40a and 70a and the second grooves 41a and 71a, so that it cannot be removed in any direction. It is possible to reliably prevent the bolts 35 and 65 from coming off.

  Then, as described above, in the state where the opening and closing plates 41 and 71 are fastened and fixed for the holders 20 and 50, as shown in FIGS. 7 and 11, the frame body portion 21 of the end holder 20 is provided. The top plate 25 and the shelf plates 29 and 30 are held in a closed state, and the top plate 55 and the shelf plates 59 and 60 of the frame body portion 51 of the intermediate holder 50 are held in a closed state. The pipes P can be held in a stacked state in a plurality of stages.

  In this embodiment, pipes P are held at each stage of the end holder 20 and the intermediate holder 50, one at each end in the longitudinal direction via the partition plate 31, and five pipes therebetween. In total, 21 pipes P can be held in 7 stages each. Note that the number of pipes P held in each stage may be six or less. However, it is preferable that the pipe P is held in three upper and lower stages at least at both ends in the longitudinal direction of the end holder 20 and the intermediate holder 50.

  In this embodiment, the pipes P are arranged on the bottom plates 24 and 54 of the holders 20 and 50, and a plurality of shelf plates 29, 30, 59, and 60 are placed thereon, and the pipes are placed on the shelf plates. P is arranged, and finally the top plates 25 and 55 are covered, and the top plates 25 and 55 are fastened by fastening means (bolts 35 and 65, nuts 43 and 73, first grooves 40a and 70a, second grooves 41a and 71a). And the shelves 29, 30, 59, 60 in a closed state, a plurality of pipes P are stacked in a plurality of stages, and a plurality of positioning protrusions 32 provided on the holders 20, 50 are provided. , 62 can be held by the holders 20, 50 in a state in which the lateral movement of the pipe P is restricted (see FIGS. 7 and 11).

  Furthermore, in this embodiment, as shown in FIG. 7 and FIG. 11, the positioning protrusions 32, 29 are provided on the shelf plates 29, 30, 59, 60 and the top plates 24, 54 of the holders 20, 50, respectively. The presser protrusions 33 and 63 that are positioned by 62 and can be contacted from above are provided at the center in the radial direction of the upper portion of the pipe P. Therefore, the upper part of the pipe P placed on the bottom plates 24, 54 and the shelf plates 29, 30, 59, 60 of the holders 20, 50 in a state in which the lateral movement is restricted by the positioning protrusions 32, 62. The plurality of pipes P can be held without backlash by being pressed by the pressing protrusions 33 and 63 at the center in the radial direction.

  Further, in the case of this embodiment, in the end holder 20, one end portions of the shelf plates 29 and 30 are pivotally connected to the side plates 27 and 28, so that they can be opened and closed left and right. Since one end of the plate 25 is pivotally connected to the end plate, it can be opened and closed back and forth (see FIG. 3). In this case, by connecting the top plate 25 and the end plate 23, the end portions of the plurality of pipes P can be securely held, and the pipes P can be more reliably prevented from falling off. In the intermediate holder 50, one end of the shelf plates 59 and 60 is rotatably connected to one side plate 58, and one end of the top plate 55 is rotatably connected to the other side plate 57. Therefore, the shelf boards 59 and 60 and the top board 55 can be opened and closed to the left and right (see FIG. 8), improving the workability of the pipe P holding work and keeping the holding strength of the pipe P in a balanced manner. be able to.

  After holding the plurality of pipes P with the end holder 20 and the intermediate holder 50 as described above, the both ends of the wire 1 are pulled on the hooks 80 and 80 of the intermediate holder 50, respectively. At the same time, the wire 1 is hung on a lifting tool 5 such as a crane (not shown) (see FIG. 16) and lifted. Then, the intermediate holder 50 is lifted and lifted in an inclined state so that one end of the pipe P held by the end holder 20 faces downward (see FIG. 17A). Then, after the other end of the pipe P has passed a predetermined length from the carry-in space 8a of the work place 8, the operator applies a force to the other end of the pipe P (see FIG. 17B), and the pipe P In a state close to horizontal (see FIG. 17C), and in this state, the hanger 5 is lowered and the pipe P is temporarily placed in the work place 8. Thereafter, the nuts 43 and 73 of the holders 20 and 50 are loosened from the ends of the bolts 35 and 65, the bolts 35 and 65 are extracted from the first grooves 40a and 70a and the second grooves 41a and 71a, and the top plate By opening the opening and closing plates 41 and 71 from 25 and 55 and opening the top plates 25 and 55, the pipes P can be taken out from the holders 20 and 50. Thereafter, the pipe P can be taken out by opening the shelf plates 29, 30, 59, 60 of the holders 20, 50 as appropriate.

  As described above, in the lifting device 10, the end holder 20 is positioned at one end of the pipe P, and the intermediate holder 50 is located at the entire center of gravity (the entire center of gravity of the lifting device 10 including the pipe P). Therefore, it arrange | positions so that it may become a position away from the edge part holder 20, the one end part of several pipes P may be inserted and installed in the frame part 51 of the edge part holder 20, and the intermediate part of the pipe P may be held in the middle Inserted and installed in the frame part 51 of the tool 50, the frame parts 21 and 51 are held closed by the fastening means of the respective holders 20 and 50, and the end holder 20 and the intermediate holder 50 are connected. The end holder 20 is tilted so that the end holder 20 is lowered by being connected by means (chain 90) and hooking the hanger 5 on the hook 80 of the intermediate holder 50 via the wire 1 and pulling it up. In this state, lift several pipes P Can.

  At this time, the end holder 20 is connected to the intermediate holder 50 by a connecting means, and is in contact with the end surfaces of the plurality of pipes P to restrict axial movement (in this embodiment, a plurality of pipes). Since P has end plates 23 a) provided at each stage of the frame body portion 21, there is no fear that the pipe P falls off. Also, the pipes P can be inserted and arranged in the frame parts 21 and 51 of the holders 20 and 50, and the plurality of pipes P can be smoothly held by a simple operation of simply closing the frame parts 21 and 51. Can do. As described above, in the lifting device 10, the plurality of pipes P can be safely lifted by the pair of holders 20 and 50 with good workability and safety. Further, since the lifting device 10 is composed of a pair of separated holders composed of the end holder 20 and the intermediate holder 50, each can be easily carried by a predetermined transport cart or the like, and storage space is also provided. In addition, the work space and the like may be small, and the handleability is good.

  In this embodiment, the connecting means (chain 90 in this embodiment) is provided with adjusting means (turn buckle 94 in this embodiment) that can adjust the distance between the end holder 20 and the intermediate holder 50. Therefore, even when the distance between the end holder 20 and the intermediate holder 50 is changed according to the length of the pipe P, it is possible to flexibly cope with each of the holders 20, After the pipe P is held by 50, when the lifting device 5 is hooked and pulled up on the hook portions 80, 80 of the intermediate holder 50 so that the connecting means is stretched smoothly by the adjusting means, the end is The part holder 20 and the intermediate holder 50 can be prevented from shifting in the axial direction.

  Furthermore, in this embodiment, since the connecting means comprises the chain 90, sufficient tensile strength can be imparted, and the position where the chain 90 is hooked to the hook portion 80 of the intermediate holder 50 and the turn which is the adjusting means. By changing the attachment position of the buckle 94, the distance between the end holder 20 and the intermediate holder 50 can be adjusted. Further, by rotating the turnbuckle 94, the chain 90 can be relatively easily stretched without slack.

  It should be noted that the present invention is not limited to the above-described embodiment, and various modified embodiments are possible within the scope of the present invention, and such an embodiment is also included in the scope of the present invention. .

DESCRIPTION OF SYMBOLS 1 Wire 3 Belt 5 Lifting tool 7 Holding bag 8 Work place 8a Carry-in space 10 Pipe lifting device (lifting device)
20 End holder 21 Frame body 23, 23a End plate 24 Bottom plate 25 Top plate 25a Hinge 27, 28 Side plate 29, 30 Shelf plate 29a Hinge 29b Outer plate 30a Hinge 31 Partition plate 32 Positioning projection 33 Retaining projection 34 , 34 Outer plate 35 Bolt 35a Support shaft 37 Support portion 38 Connection portion 40 Projection plate 40a First groove 41 Opening / closing plate 41a Second groove 41b Hinge 43 Nut 45 Hook 46 Wire 50 Intermediate holder 51 Frame body portion 54 Bottom plate 55 Top plate 55a Hinge 57, 58 Side plate 58a, 58b Upper end portion 59, 60 Shelf plate 59a, 60a Hinge 61 Partition plate 62 Positioning projection 63 Pressing projection 64 Outer plate 65 Bolt 65a Support shaft 68 Connection portion 70 Projection plate 70a First 1 groove 71 opening / closing plate 71a second groove 71b hinge 72 annular portion 73 nut 74 hook 75 clamp 76 wire 0 pull hook 90 chain 92 clamp 94 turnbuckle P pipe

Claims (7)

A pipe lifting device for lifting a plurality of pipes,
An end holder for holding one end of a plurality of pipes;
An intermediate holder for holding intermediate portions of the plurality of pipes;
Connecting means for connecting the end holder and the intermediate holder;
The end holder has a frame shape surrounding a plurality of pipes, a part of the frame body part opened and closed to receive a plurality of pipes, and a part of the frame body part closed Fastening means to be held on, and an end plate that abuts against the end faces of a plurality of pipes to restrict axial movement,
The intermediate holder has a frame shape surrounding a plurality of pipes, a part of which opens and closes to receive a plurality of pipes, and a part of the frame part is closed. A pipe lifting apparatus comprising: a tightening means for holding; and a hook portion for hooking a lifting tool for lifting.   The frame portions of the end holder and the intermediate holder are disposed on a bottom plate, a top plate disposed to face the bottom plate with a predetermined interval, and on both sides of the bottom plate and the top plate. Between both side plates, a shelf plate arranged in parallel between the bottom plate and the top plate and partitioning the inside of the frame body into a plurality of stages, and a pipe placed on the bottom plate and / or the shelf plate And a positioning projection for restricting lateral movement of the pipe, the top plate and the shelf plate can be opened and closed, and the fastening means includes the top plate and the shelf. 2. The pipe lifting apparatus according to claim 1, wherein the pipe lifting apparatus is configured to hold the plate in a closed state.   3. The presser protrusion that can be contacted from above at the radial center of the upper portion of the pipe positioned by the positioning protrusion is provided on the shelf plate and / or the top plate. Pipe lifting device. One end of the shelf of the end holder is pivotably connected to the side plate so that the end plate can be opened and closed, and the top of the end holder has one end of the end plate. It can be pivoted and can be opened and closed.
One end of the shelf of the intermediate holder is pivotably connected to one of the side plates so that the shelf can be opened and closed, and the top of the intermediate holder has one end of the side plate of the side plate. The pipe lifting device according to claim 2 or 3, wherein the pipe lifting device is pivotally connected to the other to be opened and closed.   The pipe suspending device according to any one of claims 1 to 4, wherein the connecting unit includes an adjusting unit capable of adjusting a distance between the end holder and the intermediate holder.   6. The pipe lifting apparatus according to claim 5, wherein the connecting means comprises a chain, and the adjusting means comprises a turnbuckle.   The tightening means is formed on the top plate that receives a bolt that is pivotally supported on the bottom plate or the side plate, a nut that is screwed to the bolt, and a bolt that is turned when the bolt is rotated. A first groove, an open / close plate attached to the top plate so as to be openable and closable, and overlapping the first groove of the top plate when closed, and receiving the bolt when the open / close plate is closed. The pipe lifting apparatus according to any one of claims 1 to 5, further comprising a second groove provided in the opening / closing plate so as to intersect the groove.