Jig for lifting folded plates and method for lifting folded plates

Abstract

To provide a jig for lifting a folded plate and a method for lifting a folded plate, capable of stably lifting the folded plate.SOLUTION: The jig for lifting a folded plate includes a flat surface portion and an inclined portion formed at one end side and the other end side of the flat surface portion so as to be inclined with respect to the flat surface portion. The jig for lifting a folded plate includes a base portion, a clamping portion provided on the base portion and configured to clamp the flat surface portion of the folded plate from above and below, and a gripping portion provided on the base portion and configured to be able to grip the base.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a jig for lifting a folded plate and a method for lifting a folded plate. [Background technology]

[0002] Folded plates are often used as roofing materials for large facilities such as gymnasiums, factories, and warehouses. Folded plates have a V-shaped groove when viewed from the side. When used as a roofing material, multiple folded plates are arranged by overlapping a V-shaped groove at the end of one folded plate with a V-shaped groove at the end of the other folded plate to achieve the desired roof length.

[0003] Conventionally, when installing or replacing folded plates used as roofing materials, the folded plates are manually lifted and transported. Alternatively, folded plates can be transported using a device for transporting folded plates. Patent Document 1 discloses an example of such a device, which is a transport device having a one-end hook that engages one end of the folded plate in the longitudinal direction and an other-end hook that engages the other end. Patent Document 2 also discloses a transport tool having a one-end arm that engages one end of the folded plate in the longitudinal direction and an other-end arm that engages the other end. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 63-138056 [Patent Document 2] Japanese Patent Application Laid-Open No. 2015-200174 Summary of the Invention [Problem to be solved by the invention]

[0005] The conveying devices and conveying implements disclosed in Patent Documents 1 and 2 each transport the folded plates by engaging hooks or arms (hereinafter also referred to as hooks, etc.) at both ends of the folded plates in the arrangement direction.

[0006] However, with these conveying devices and conveyance tools, if the length of the folding plates in the arrangement direction is long (if the V-shaped grooves are continuously formed), there is a risk that the folding plates will bend when lifted with a hook, etc. If the folding plates bend, the center part will be pushed down, which may cause the folding plates to be released from the hook, etc.

[0007] The present invention has been made in consideration of the above problems, and aims to provide a jig for lifting a folded plate and a method for lifting a folded plate that can stably lift a folded plate. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention has the following features. [1] A jig for lifting a folded plate having a flat portion and an inclined portion formed at one end side and the other end side of the flat portion so as to be inclined with respect to the flat portion, A base and A clamping portion provided on the base and clamping the planar portion of the folded plate from above and below; a grip portion provided on the base portion and configured to be grippable by an operator; A jig for lifting folded plates having the following structure. [2] The clamping portion is composed of an upper plate member that clamps the planar portion of the folded plate from above, and a lower plate member that clamps the planar portion of the folded plate from below. [1] The folded plate lifting jig described. [3] a connecting portion that connects the base portion and the lower plate member; The connection portion is formed along the slope of the inclined portion of the folded plate. [2] The folded plate lifting jig described in. [4] The base portion is provided with an insertion hole formed so that the upper plate member can be inserted therethrough, The upper plate member has a protrusion formed on one end side and the other end side in the insertion direction into the insertion hole. [2] or [3] The folding plate lifting jig described in [2] or [3]. [5] The base portion is provided with an insertion hole formed so that the lower plate member can be inserted therethrough, The lower plate member has a protrusion formed on the base end side in the insertion direction into the insertion hole. [2] or [3] The folding plate lifting jig described in [2] or [3]. [6] The jig for lifting a folded plate according to [2] or [3], further comprising a fixing portion that fixes the state in which the planar portion of the folded plate is sandwiched between the upper plate member and the lower plate member. [7] The jig for lifting folded plate according to any one of [1] to [6], wherein the gripping portion has a locking hole formed in the base and a hook that can be locked in the locking hole. [8] A method for lifting a folded plate using the folding plate lifting jig according to any one of [1] to [7], A clamping process of clamping the planar portion of the folded plate with the clamping portion of the folded plate lifting jig; A lifting process in which an operator grasps the gripping portion and lifts the folded plate; A method for lifting a folded plate having the following features. [Effects of the Invention]

[0009] According to the folding plate lifting jig of the present invention, the folding plate can be securely held by having a clamping portion provided at the base that clamps the flat surface of the folding plate from above and below. Therefore, a worker can easily lift the folding plate in a stable state by simply grasping the gripping portion and lifting it. This allows the folding plate to be lifted, held, and transported safely, and the folding plate can be held in a lifted state for a long time.

[0010] In addition, because the worker can lift the folded plate by grasping the gripping portion, he or she can lift, hold, and transport the folded plate in a stable position. This allows for safe work, such as replacing the folded plate. This improves the efficiency of work, such as inserting a new folded plate under an existing folded plate. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 10 is an explanatory diagram showing the configuration of a folding plate lifting jig. [Figure 2] FIG. 1 is a side view of a jig for lifting folded plates. [Figure 3] FIG. 10 is a perspective view of the folded plate lifting jig from the rear. [Figure 4] FIG. 1 is a perspective view of a folded plate lifting jig as seen from the side. [Figure 5] FIG. 10 is an explanatory diagram showing how a folded plate is lifted using a folded plate lifting jig. [Figure 6] FIG. 10 is an explanatory diagram showing how a folded plate is lifted using a folded plate lifting jig. [Figure 7] FIG. 10 is an explanatory diagram showing how a folded plate is lifted using a folded plate lifting jig. [Figure 8] FIG. 10 is an explanatory diagram showing how a folded plate is lifted using a folded plate lifting jig. [Figure 9] FIG. 10 is a side view of a folded plate lifting jig according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] (First embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 shows the configuration of a folded plate lifting jig 100. As shown in Fig. 1, the folded plate lifting jig 100 is a jig for lifting a folded plate 10.

[0013] The folded plate 10 has a flat portion 11 and inclined portions 12, 13 formed at one end and the other end of the flat portion 11, inclined relative to the flat portion 11. In FIG. 1, the folded plate 10 has alternately formed groove portions 14 in which the inclined portions 12, 13 are formed upward from the flat portion 11, and convex portions 15 in which the inclined portions 12, 13 are formed downward from the flat portion 11. The folded plate 10 has a continuous, approximately V-shaped shape in side view formed by the groove portions 14 and the convex portions 15. The folded plate 10 is formed into a rectangular shape in top view. Hereinafter, the direction in which the approximately V-shaped shape of the folded plate 10 is continuously formed will also be referred to as the longitudinal direction. Furthermore, the direction perpendicular to the direction in which the V-shaped shape is continuously formed on the surface of the folded plate 10 will also be referred to as the lateral direction.

[0014] The folded plate 10 is used, for example, as a roofing material. A plurality of folded plates 10 can be arranged side by side with their longitudinal ends overlapping to form the roof of a building. Note that the folded plate 10 is not limited to being used as a roofing material, and may also be used, for example, as a flooring material.

[0015] The jig 100 for lifting folded plate of this embodiment has a base 20, a clamping portion 30 provided on the base 20 and configured to clamp the flat portion 11 of the folded plate 10 from above and below, and a gripping portion 40 provided on the base 20 and configured to be grippable by an operator.

[0016] Fig. 2 is a side view of the jig 100 for lifting a folded plate. Fig. 3 is a perspective view of the jig 100 for lifting a folded plate seen from the back. Fig. 4 is a perspective view of the jig 100 for lifting a folded plate seen from the side. As shown in Figs. 2 to 4, the base 20 is formed in the shape of a rectangular plate.

[0017] The clamping portion 30 is configured to have an upper plate member 31 that clamps the flat portion 11 of the folded plate 10 from above, and a lower plate member 32 that clamps the flat portion 11 of the folded plate 10 from below.

[0018] The upper plate member 31 is formed in a flat plate shape. The upper plate member 31 is formed so as to be insertable into the insertion hole 21 formed in one end side (upper end side) of the base 20. Protrusions 33 and 34 are formed on one end side and the other end side of the upper plate member 31 in the insertion direction D1 into the insertion hole 21.

[0019] The protrusion 33 formed on the tip side (one end side) in the insertion direction D1 is formed to protrude upward from the upper surface of the upper plate member 31. Moreover, the protrusion 34 formed on the base end side (the other end side) in the insertion direction D1 is formed to protrude downward from the lower surface of the upper plate member 31.

[0020] The protrusions 33, 34 are preferably formed to have a height that is approximately the same as or higher than the height of the insertion hole 21. By forming the protrusions 33, 34 in this manner, it is possible to make it difficult for the upper plate member 31 to come out of the insertion hole 21.

[0021] The lower plate member 32 is formed in a flat plate shape. The lower plate member 32 is connected to the other end (lower end) of the base 20 via a connecting portion 50. The connecting portion 50 is formed along the slope of the inclined portions 12, 13 of the folded plate 10. It is preferable that the connecting portion 50 is formed, for example, along the slope of the inclined portion 12 of the flat portion 11 of the convex portion 15.

[0022] By forming the connecting portion 50 and the lower plate member 32 in this manner, when the lower plate member 32 is inserted into the folded plate 10, it becomes possible to move the lower plate member 32 along the inclination of the inclined portion 12. Furthermore, when the lower plate member 32 is brought into contact with the flat portion 11, it becomes possible to bring the inclined portion 12 and the connecting portion 50 into contact with each other. This makes it possible to strengthen the clamping state by the clamping portion 30.

[0023] An angle adjustment mechanism (not shown) for adjusting the inclination angle of the connecting portion 50 may be provided at least between the base portion 20 and the connecting portion 50 and between the lower plate member 32 and the connecting portion 50. By providing such an angle adjustment mechanism, it becomes possible to accommodate a variety of shapes of the inclined portions 12, 13.

[0024] 2, a grip portion 40 is provided on one end side (upper end side) of the base portion 20 relative to the insertion hole 21. The grip portion 40 has a locking hole 41 formed on the one end side (upper end side) of the base portion 20 relative to the insertion hole 21, and a hook 42 that can be locked into the locking hole 41. The grip portion 40 has a main body portion 43 formed next to the hook 42 so that it can be gripped by an operator.

[0025] 3 and 4, two locking holes 41 are provided at different positions in the width direction of the base 20. The locking holes 41 are formed to penetrate the base 20 in the thickness direction. The number of locking holes 41 is not particularly limited, and it is preferable that one or more locking holes are formed.

[0026] The hook 42 is not particularly limited in shape as long as it can be locked in the locking hole 41, but in this embodiment, it is formed in a U-shape as shown in FIG.

[0027] The main body 43 is not particularly limited as long as it has a shape that can be held by an operator, but in this embodiment, it is formed in a rod shape. Note that the main body 43 is not limited to a rod shape and may be, for example, a wire formed in a string shape.

[0028] The worker can easily lift the folding plate 10 by engaging the hook 42 with the engaging hole 41 and gripping the main body portion 43.

[0029] The base 20 is provided with a fixing portion 60 that fixes the flat portion 11 of the folded plate 10 in a sandwiched state between the upper plate member 31 and the lower plate member 32. The fixing portion 60 has a nut 61 provided on the back surface of the other end side (lower end side) of the base 20, and a bolt 62 that screws into the nut 61 from below.

[0030] The nut 61 is not particularly limited as long as it can be threaded onto the bolt 62. The length of the bolt 62 is formed to be longer than the length L1 from the upper plate member 31 to the nut 61. It is preferable that the length of the bolt 62 is equal to or greater than the sum of the length L1 from the upper plate member 31 to the nut 61 and the length L2 of the nut 61.

[0031] By forming the bolt 62 in this manner, when the bolt 62 is tightened, the bolt 62 comes into contact with the upper plate member 31, making it possible to push up the base end of the upper plate member 31 in the insertion direction D1. When the bolt 62 is tightened further, the tip of the upper plate member 31 in the insertion direction D1 moves closer to the lower plate member 32. This makes it possible to clamp the planar portion 11 of the folded plate 10 more firmly.

[0032] (Lifting method) A method for lifting a folded plate 10 using the above-described jig 100 for lifting a folded plate will now be described. The method for lifting a folded plate 10 using the jig 100 for lifting a folded plate includes a clamping step of clamping the flat surface 11 of the folded plate 10 with the clamping units 30, a fixing step of fixing the clamped state of the flat surface 11 by the clamping units 30, and a lifting step of gripping the gripping units 40 to lift the folded plate 10.

[0033] <Holding process> 5 to 8 show how the folded plate 10 is lifted using the folded plate lifting jig 100. In the clamping step, the flat portion 11 of the folded plate 10 is sandwiched and clamped between the upper plate member 31 and the lower plate member 32 from above and below.

[0034] Specifically, as shown in FIG. 5 , first, one longitudinal end of the folding plate 10 to be lifted (indicated by a dashed line in the figure) is slightly lifted, and the lower plate member 32 is inserted from below the end. When inserting the lower plate member 32 into the folding plate 10, it is preferable to insert the upper plate member 31 into the insertion hole 21 first. It is also preferable to insert the lower plate member 32 into the folding plate 10 with the upper plate member 31 retracted in the insertion direction D1. By moving the upper plate member 31 in this manner, it is possible to prevent the upper plate member 31 from interfering with the folding plate 10.

[0035] Thereafter, as shown in FIG. 6, the upper plate member 31 is slid forward in the insertion direction D1, and the flat portion 11 of the folding plate 10 is sandwiched between the upper plate member 31 and the lower plate member 32.

[0036] Furthermore, by forming the upper plate member 31 and the lower plate member 32 to have a length corresponding to the length of the flat portion 11, the flat portion 11 can be clamped over a wider area, making the clamping state by the clamping portion 30 more stable.

[0037] <Fixed process> 7, in the fixing step, the bolt 62 of the fixing part 60 is threaded into the nut 61 from below and tightened, so that the base end side of the upper plate member 31 in the insertion direction D1 is pushed up by the bolt 62, and the tip end side of the upper plate member 31 in the insertion direction D1 is brought close to the lower plate member 32. This makes it possible to fix the state in which the clamping part 30 clamps the flat surface portion 11 of the folded plate 10.

[0038] The bolts 62 should be brought into contact with the upper plate member 31 at a position closer to the base end in the insertion direction D1 than the protrusions 34 on the underside of the upper plate member 31. By tightening the bolts 62 and bringing them into contact with the upper plate member 31 in this manner, the position of the upper plate member 31 relative to the lower plate member 32 can be fixed. This makes it possible to prevent the protrusions 34 of the upper plate member 31 from moving toward the tip end and base end in the insertion direction D1. Note that, although the clamping and fixing processes have been performed on one end side of the folded plate 10 in the longitudinal direction in the above, the clamping and fixing processes can also be performed on the other end side of the folded plate 10 in the longitudinal direction using another folded plate lifting jig 100.

[0039] <Lifting process> Next, in the lifting process, as shown in Fig. 8, the hooks 42 are engaged with the engaging holes 41 formed in the base 20. The worker can lift (suspension) the folded plate 10 by gripping the main body parts 43 of the gripping parts 40 at one end side and the other end side in the longitudinal direction of the folded plate 10 and lifting it up.

[0040] By lifting the folding plate 10 in this manner, it is possible to safely carry out work such as replacing an existing folding plate 10 with a new folding plate 10, for example.

[0041] In the present embodiment, an example has been described in which the grip portion 40 is configured by the locking hole 41 and the hook 42. The grip portion 40 is not limited to this form, and may be configured, for example, by a rod-shaped portion (not shown) formed in a rod shape that is extendable and retractable from the base portion 20.

[0042] As described above, according to the jig 100 for lifting folded plate of this embodiment, the flat surface 11 of the folded plate 10 is clamped from above and below by the clamping portion 30. Therefore, the jig 100 for lifting folded plate can increase the area over which the jig holds the folded plate 10, compared to conventional cases in which hooks are hooked onto the longitudinal ends of the folded plate 10 to lift it.

[0043] Furthermore, in the conventional conveying device for the folded plate 10, the folded plate 10 is lifted so that both ends in the longitudinal direction thereof approach each other, so that the load is concentrated in the longitudinal center of the folded plate 10. This causes the folded plate 10 to bend in a U-shape, which tends to make the conveying device's grip of the folded plate 10 unstable.

[0044] The folded plate lifting jig 100 of this embodiment can prevent the folded plate 10 from bending into a U-shape by having an operator lift one end and the other end of the folded plate 10 in the longitudinal direction. Therefore, with the folded plate lifting jig 100, an operator can easily lift the folded plate 10 in a stable state while maintaining the shape of the folded plate 10 simply by gripping and lifting the holding portion 40. This allows the folded plate 10 to be lifted, held, and transported safely.

[0045] Furthermore, by gripping and lifting the folding plate 10 with the gripping portion 40, the folding plate 10 can be lifted in a standing position and maintained in the lifted state, compared to when the worker directly holds the end of the folding plate 10 and lifts it. Therefore, by using the folding plate lifting jig 100 in the work of replacing the folding plate 10, the safety of the work can be improved. Furthermore, the load required for the worker to lift the folding plate 10 can be reduced, so the folding plate 10 can be maintained in the lifted state for a long period of time. This makes it possible to improve the efficiency of the work of replacing the folding plate 10.

[0046] Furthermore, in the above-described embodiment, the fixing portion 60 is configured by the nut 61 and the bolt 62. However, the fixing portion 60 is not limited to this configuration and may be configured by, for example, a latch (not shown). Specifically, the latch may be configured to include a rod-shaped shaft, a protrusion provided on the shaft, and an engaging portion provided on the base 20 that engages with the protrusion depending on the position of the shaft. By configuring the fixing portion 60 in this manner, the clamping state of the folded plate 10 by the clamping portion 30 can be easily and quickly fixed and released by engaging or releasing the protrusion with the engaging portion at the fixing portion.

[0047] (Second embodiment) In the above-described embodiment, an example has been described in which the upper plate member 31 is formed so as to be insertable into the insertion hole 21 of the base 20. The folded plate lifting jig 100 is not limited to this example, and the lower plate member 32 may be formed so as to be insertable into the insertion hole of the base 20. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and descriptions thereof will be omitted.

[0048] 9 shows a folded plate lifting jig 100 according to the second embodiment. As shown in Fig. 9, a lower insertion hole 22 is formed in the base 20 so that a lower plate member 32 can be inserted therethrough.

[0049] A lower plate member 32 is inserted into the lower insertion hole 22. The lower plate member 32 has a base end portion 36 formed in a flat plate shape and a connecting portion 37 connecting the tip side and the base end portion 36.

[0050] The base end 36 of the lower plate member 32 has a protrusion 38 formed on the connecting portion 37 side. The protrusion 38 is formed to protrude upward from the upper surface of the base end 36. The protrusion 38 is preferably formed to be approximately the same height as the lower insertion hole 22 or higher than the height of the lower insertion hole 22. By forming the protrusion 38 in this way, it is possible to make it difficult for the lower plate member 32 to come out of the lower insertion hole 22.

[0051] The bolt 62 is tightened from above through a screw hole 63 provided on the base end side of the upper plate member 31. When the bolt 62 is tightened further, the bolt 62 comes into contact with the upper surface of the base end portion 36 of the lower plate member 32, and presses down the base end portion 36 of the lower plate member 32. As a result, the lower plate member 32 moves closer to the upper plate member 31. As a result, the clamping portion 30 can firmly clamp the flat portion 11.

[0052] Even when the jig 100 for lifting a folded plate is configured in this manner, it is possible to stably lift the folded plate 10 while maintaining its shape, similar to the jig 100 for lifting a folded plate of the first embodiment.

[0053] In the above embodiment, an example has been described in which the clamping unit 30 is configured from two members. However, the upper plate member 31 and the lower plate member 32 of the clamping unit 30 may be formed integrally with the base 20. When the clamping unit 30 is configured in this manner, it is preferable that the end of at least one of the upper plate member 31 and the lower plate member 32 be formed like a leaf spring so that one member is biased toward the other member. [Explanation of symbols]

[0054] 100 Folding plate lifting jig 10 Folded Plate 11 Plane part 12 Slope 13 Slope 20 base 30 Clamping part 31 Upper plate member 32 Lower plate member 33 Protrusion 34 Protrusion 38 Protrusion 40 Gripping part 41 Locking hole 42 Hook 50 Connection 60 Fixed part

Claims

1. A jig for lifting a folded plate having a flat portion and an inclined portion formed at one end side and the other end side of the flat portion so as to be inclined with respect to the flat portion, A base and A clamping portion provided on the base and clamping the planar portion of the folded plate from above and below; a grip portion provided on the base portion and configured to be grippable by an operator; and The clamping portion is composed of an upper plate member that clamps the planar portion of the folded plate from above and a lower plate member that clamps the planar portion of the folded plate from below, The base portion is provided with an insertion hole formed so that the upper plate member can be inserted therethrough, The upper plate member has protrusions formed on one end side and the other end side in the insertion direction into the insertion hole, and is a jig for lifting folded plates.

2. A jig for lifting a folded plate having a flat portion and an inclined portion formed at one end side and the other end side of the flat portion so as to be inclined with respect to the flat portion, A base and A clamping portion provided on the base and clamping the planar portion of the folded plate from above and below; a grip portion provided on the base portion and configured to be grippable by an operator; and The clamping portion is composed of an upper plate member that clamps the planar portion of the folded plate from above and a lower plate member that clamps the planar portion of the folded plate from below, The base portion is provided with an insertion hole formed so that the lower plate member can be inserted therethrough, The lower plate member has a protrusion formed on the base end side in the insertion direction into the insertion hole, and the jig for lifting folded plates.

3. a connecting portion that connects the base portion and the lower plate member; The jig for lifting a folded plate according to claim 1 , wherein the connection portion is formed along the inclination of the inclined portion of the folded plate.

4. The folding plate lifting jig according to any one of claims 1 to 3, further comprising a fixing portion that fixes the state in which the planar portion of the folding plate is sandwiched between the upper plate member and the lower plate member.

5. The plate lifting jig according to any one of claims 1 to 3, wherein the gripping portion has a locking hole formed in the base and a hook that can be locked in the locking hole.

6. The jig for lifting folded plate according to claim 4, wherein the gripping portion has a locking hole formed in the base portion and a hook that can be locked in the locking hole.

7. A method for lifting a folded plate using the folding plate lifting jig according to any one of claims 1 to 3, A clamping process of clamping the planar portion of the folded plate with the clamping portion of the folded plate lifting jig; A lifting process in which an operator grasps the gripping portion and lifts the folded plate; A method for lifting a folded plate having the following features.

Images