Building material holding jig

Abstract

To provide a holding jig of building materials capable of holding steel plates of various sizes.SOLUTION: A holding jig of building materials (an attachment 40) comprises a fixed member 42 fixed to an arm of a transporting machine to transport steel plates, a frame 44 in the form of a frame-like shape attached to the fixed member 42, and multiple magnets 46 slidably attached to the frame 44 along the frame 44 to detachably attract the steel plates.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a building material holding jig.

Background Art

[0002] The following Patent Document 1 shows a handling machine for moving and positioning various building materials.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The handling machine of Patent Document 1 is provided with a gripping attachment for gripping building materials. By operating the handling operation lever, this gripping attachment can be finely adjusted in each direction of left and right, upright (tilt), and left and right inclination.

[0005] Examples of building materials gripped by such a handling machine include plate-shaped members such as steel plates. Since the size of the steel plate varies depending on the installation location, it is desirable that a single gripping attachment can grip steel plates of various sizes.

[0006] Here, for example, when the distance between the gripping parts in the gripping attachment is short with respect to the size of the steel plate, a large moment acts on the gripping parts. On the other hand, even when the distance between the gripping parts is long with respect to the size of the steel plate, there are cases where it cannot be gripped by two gripping parts and can only be gripped by one gripping part. Even in such a case, a large moment acts on the gripping part.

[0007] Therefore, it is necessary to select a steel plate with a size such that the moment acting on the gripping portion does not become excessive. That is, there is a restriction on the size of the steel plate that can be gripped.

[0008] In view of the above facts, an object of the present invention is to provide a building material holding jig that can hold steel plates of various sizes.

Means for Solving the Problem

[0009] One aspect The building material holding jig includes a rod-shaped fixing member fixed to the arm of a transporter that transports a steel plate, a frame-shaped frame attached to the fixing member, and a plurality of magnets slidably attached to the frame along the frame and detachably adsorbing the steel plate. In the fixing member, the mounting surface of the frame and the fixing surface to the arm are arranged to face each other.

[0010] One aspect In the building material holding jig described in, the magnet for fixing the steel plate can slide along the frame. Therefore, the adsorption position can be changed. As a result, steel plates of various sizes and shapes can be held. Also, even if the steel plate has unevenness or holes, these can be avoided and the steel plate can be held by the magnet. The building material holding jig of one aspect is The frame has a cross-sectional plane along the axial direction of the fixing member, and the magnet adsorbs the steel plate whose in-plane direction is along the cross-sectional plane of the frame.

[0011] Claim 1The building material holding jig includes a rod-shaped fixing member fixed to the arm of a transporter that transports steel plates, a frame-shaped frame attached to the fixing member, and a plurality of magnets that are slidably attached along the frame with respect to the frame and detachably adsorb the steel plates. The frame includes a frame-shaped outer frame to which the magnets are attached, and a latch-shaped inner frame spanned across the outer frame at a position surrounded by the outer frame. Magnets are also fixed to the inner frame, and the inner frame is slidable along the plane of the outer frame with respect to the outer frame.

[0012] Claim 1 In the building material holding jig according to the above, the magnets fixed to the inner frame can slide along the plane of the outer frame together with the inner frame. Therefore, not only the adsorption positions of the outer magnets but also those of the inner magnets can be changed. As a result, steel plates of various shapes can be held. Also, even if the steel plate has unevenness or holes, these can be avoided and the steel plate can be held by the magnets. The building material holding jig of claim 2, wherein the frame has a plane along the axial direction of the fixing member, and the magnet attracts the steel plate whose in-plane direction is along the plane of the frame.

[0013] Claim 3 The building material holding jig of Claim 1 In the building material holding jig according to the above, the outer frame is formed by including a cylindrical member formed in a cylindrical shape and a rod-shaped member inserted into the cylindrical member, and the size of the outer frame can be changed by changing the insertion depth of the rod-shaped member into the cylindrical member.

[0014] Claim 3 In the building material holding jig according to the above, the frame is formed by a cylindrical member and a rod-shaped member, and the size of the frame can be changed by changing the insertion depth of the rod-shaped member into the cylindrical member. As a result, steel plates of various sizes can be held.

[0015] Claim 4The building material holding jig includes a rod-shaped fixing member fixed to the arm of a transporter for transporting a steel plate, a frame-shaped frame attached to the fixing member, and a plurality of magnets that are slidably attached along the frame with respect to the frame and detachably adsorb the steel plate. The fixing member includes a rail that projects in the out-of-plane direction of the frame and supports the frame so as to be movable in the out-of-plane direction, and a cylinder that is attached to the fixing member and moves the frame in the out-of-plane direction.

[0016] Claim 4 In the building material holding jig according to [description], the frame is movably supported by a rail that projects in the out-of-plane direction from the fixing member, and by expanding and contracting the cylinder, the frame can be moved in the out-of-plane direction. Therefore, compared with the mode of moving the transporter or the arm to attach the steel plate to the attachment surface, the steel plate can be attached to the attachment surface with high accuracy.

[0017] Claim 5 The building material holding jig according to [description] is the building material holding jig according to any one of claims 1 to 4 In the building material holding jig according to any one of [description], the magnet has a rectangular adsorption surface and is rotatable along the in-plane direction of the frame.

[0018] Claim 5 In the building material holding jig according to [description], the rectangular magnet can not only move in the extending direction of the frame, but also rotate along the in-plane direction of the frame. Therefore, when there are unevenness or holes in the steel plate, it is easier to avoid them. Claim 6 The building material holding jig according to [description] is Claim 3 In the building material holding jig according to [description], the cylindrical member is formed in a portal shape and a pair of them are provided, the rod-shaped member is provided in a pair, and both ends of the rod-shaped member are inserted into the respective opposing pair of cylindrical members. Claim 7 The building material holding jig according to [description] is Claim 4 In the building material holding jig according to [description], the rail projects from the fixing member in one direction of the out-of-plane direction of the frame, and the cylinder is attached to the fixing member in the other direction of the out-of-plane direction of the frame.

Advantages of the Invention

[0019] According to the present invention, steel plates of various sizes can be gripped.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Modes for Carrying Out the Invention

[0021] Hereinafter, a building material holding jig according to an embodiment of the present invention will be described with reference to the drawings. Components denoted by the same reference numerals in each drawing mean the same components. However, unless otherwise specified in the specification, each component is not limited to one, and a plurality of components may exist.

[0022] In addition, descriptions of overlapping configurations and reference numerals in each drawing may be omitted. Note that the present invention is not limited to the following embodiments, and appropriate changes such as omitting configurations or replacing them with different configurations can be made and implemented within the scope of the object of the present invention.

[0023] In each figure, the directions indicated by the arrows X and Y are directions along the horizontal plane and are perpendicular to each other. Also, the direction indicated by the arrow Z is a direction along the vertical direction (up and down direction). In each figure, the directions indicated by the arrows X, Y, and Z are assumed to coincide with each other.

[0024] <Mounting surface> FIG. 2 shows a steel plate conveying device 20 including an attachment 40 which is a building material holding jig according to an embodiment of the present invention. The steel plate conveying device 20 is, as an example, a conveying and mounting device for conveying a steel plate 10 as a building material and fixing it to a mounting surface 12A of a structure to be reinforced 12.

[0025] As shown in FIG. 1, in the present embodiment, the structure to be reinforced 12 is a concrete column, and the steel plate 10 is attached and reinforced for improving seismic resistance and the like. Note that various configurations such as a wall surface or a ceiling surface can be adopted as the structure to be reinforced 12.

[0026] In the structure to be reinforced 12, a plurality of anchor bolts 14 are constructed on a mounting surface 12A where the steel plate 10 is attached and reinforced, prior to the attachment of the steel plate 10. Further, through holes 10A are formed in the steel plate 10 at positions corresponding to the anchor bolts 14.

[0027] When attaching the steel plate 10 to the mounting surface 12A, insert the anchor bolt 14 through the through hole 10A and bring the steel plate 10 into contact with the mounting surface 12A. Then, by screwing a nut (not shown) onto the anchor bolt 14, the steel plate 10 is attached to and fixed to the mounting surface 12A.

[0028] <Steel plate transporting device> As shown in FIG. 2, the steel plate transporting device 20 includes a transporter 22, a steering unit 24 provided on the transporter 22, an arm 30, and an attachment 40.

[0029] <Transporter> The transporter 22 is a vehicle that can be driven in a direction desired by the operator. By the operator operating the steering unit 24, the transporter 22 can be started, stopped, and the traveling direction and speed can be changed. The steering unit 24 includes a handle for the operator to operate. Further, the steering unit 24 is formed including a controller for operating the arm 30 and the like.

[0030] An arm 30 is provided on the transporter 22, and at the tip of the arm 30, a hand portion 32 for detachably holding the attachment 40 is provided. In other words, the attachment 40 is fixed to the arm 30 via the hand portion 32.

[0031] (Movements of the arm portion and the hand portion) As shown by the arrow N1, the arm 30 is capable of rising and falling. By raising and lowering the arm 30, the vertical (Z - direction) positions of the attachment 40 and the steel plate 10 fixed to the tip of the arm 30 via the hand portion 32 can be adjusted.

[0032] Also, as shown by the arrow N2, the arm 30 is capable of extending and contracting. By extending and contracting the arm 30, the front - rear (X - direction, the front - rear direction of the transporter 22) positions of the attachment 40 and the steel plate 10 fixed to the tip of the arm 30 via the hand portion 32 can be adjusted.

[0033] As shown by arrow N3, the hand portion 32 is rotatable (tiltable) about the horizontal direction (Y direction, the vehicle width direction of the transporter 22) as the rotation axis. By tilting the hand portion 32, the vertical inclination of the attachment 40 and the steel plate 10 fixed to the tip of the arm 30 via the hand portion 32 can be adjusted.

[0034] Also, as shown by arrow N4 in the plan view of FIG. 3, the hand portion 32 is rotatable (swingable) about the vertical direction (Z direction) as the rotation axis. By swinging the hand portion 32, the horizontal inclination of the attachment 40 and the steel plate 10 fixed to the tip of the arm 30 via the hand portion 32 can be adjusted. Note that the illustration of the extrusion mechanism 50 in the attachment 40, which will be described later in FIG. 3, is omitted.

[0035] Furthermore, as shown by arrow N5 in FIG. 5, the hand portion 32 is rotatable (rollable) about the horizontal direction (X direction, the front-rear direction of the transporter 22, see FIG. 2) as the rotation axis. By rolling the arm 30, the in-plane inclination of the attachment 40 and the steel plate 10 (see FIG. 2, etc.) fixed to the tip of the arm 30 via the hand portion 32 can be adjusted.

[0036] As shown by arrow N6 in FIG. 3, the transporter 22 is movable (sideways) in the lateral direction (Y direction, the vehicle width direction of the transporter 22) without changing the position of the tires. By moving the transporter 22 sideways, the lateral position (Y direction, the vehicle width direction of the transporter 22) of the attachment 40 and the steel plate 10 fixed to the tip of the arm 30 via the hand portion 32 can be adjusted.

[0037] <Attachment> As shown in FIGS. 4 and 5, the attachment 40 includes a fixing member 42, a frame 44, a magnet 46, a rail 48, and an extrusion mechanism 50.

[0038] (Fixing Member) As shown in Fig. 6(A), the fixing member 42 is a steel rod-shaped member fixed to the arm 30 via the hand portion 32, and has a square tubular shape. Note that the fixing member 42 may be formed of a solid square bar.

[0039] As shown in Fig. 4, four protruding portions 42A protruding in the horizontal direction (X direction, the front-rear direction of the transporter 22) and on the opposite side of the arm 30 are fixed to the fixing member 42. Rails 48 are fixed to both surfaces of the protruding portion 42A in the Y direction, respectively.

[0040] (Frame) The frame 44 is a steel frame-shaped member fixed to the fixing member 42 via the rail 48. As shown in Fig. 6(B), the frame 44 includes a frame-shaped (square-shaped) outer frame 44A and a latch-shaped (linear) inner frame 44B.

[0041] The outer frame 44A is further formed by including tubular members 44AA forming both end portions of the outer frame 44A and a rod-shaped member 44AB inserted into the tubular members 44AA and forming the central portion of the outer frame 44A.

[0042] A pair of tubular members 44AA are provided, and each tubular member 44AA is formed in a portal shape (U-shaped). In the tubular member 44AA, a protruding portion extending along the X direction is provided at the end of the member extending in the Y direction in Fig. 6(B), and this protruding portion is formed in a tubular shape.

[0043] A pair of rod-shaped members 44AB are provided, and both ends of each are inserted into the protruding portions of the opposing tubular members 44AA. Both ends of the rod-shaped member 44AB and the protruding portions of the tubular members 44AA are fixed using bolts.

[0044] The insertion depth of the rod-shaped member 44AB into the cylindrical member 44AA can be freely set. And the bolt fixing positions between the cylindrical member 44AA and the rod-shaped member 44AB are variable. For this reason, as shown by the arrow K1, the cylindrical member 44AA is slidable with respect to the rod-shaped member 44AB and can be fixed as appropriate.

[0045] Thereby, for example, as shown in FIG. 7, a pair of cylindrical members 44AA can be arranged to be separated from each other with respect to the state shown in FIGS. 5 and 6(B) and fixed to the rod-shaped member 44AB.

[0046] Here, as an example of a configuration in which the cylindrical member 44AA is slidable with respect to the rod-shaped member 44AB and can be fixed as appropriate, for example, as shown in FIG. 10(A), a plurality of through holes H2 are formed in the cylindrical member 44AA along the axial direction of the cylindrical member 44AA. Also, at least one through hole H1 is formed in the rod-shaped member 44AB.

[0047] Then, as shown in FIG. 10(B), a bolt is inserted into either the through hole H1 or the through hole H2. By changing the through hole H2 through which the bolt is inserted, the cylindrical member 44AA can slide with respect to the rod-shaped member 44AB and can be fixed.

[0048] Note that one through hole may be formed in the cylindrical member 44AA and two or more through holes may be formed in the rod-shaped member 44AB. Also, such a configuration of the cylindrical member 44AA and the rod-shaped member 44AB can be applied to various members that are made "slidable" in the present embodiment.

[0049] As shown in FIG. 6(B), the inner frame 44B is a member bridged over the outer frame 44A at a position surrounded by the outer frame 44A.

[0050] The inner frame 44B includes a shaft portion 44BA, a slide portion 44BB, and a connecting portion 44BC. The shaft portion 44BA is a rod-shaped member bridged over the rod-shaped member 44AB in the outer frame 44A.

[0051] The slide parts 44BB are provided in a pair, fixed to both end parts of the shaft part 44BA, and are cylindrical members through which the rod-shaped member 44AB is inserted.

[0052] The slide part 44BB and the rod-shaped member 44AB are fixed using bolts, but the fixing positions are variable. For this reason, as shown by the arrow K2, the inner frame 44B is slidable with respect to the rod-shaped member 44AB and can be fixed as appropriate. In other words, the inner frame 44B is slidable along the in-plane direction of the outer frame 44A and can be fixed as appropriate.

[0053] The connecting parts 44BC are provided in a pair at the central part of the shaft part 44BA. As shown in FIG. 5, each connecting part 44BC is arranged sandwiching the protruding part 42A of the fixing member 42, and the rail 48 is fixed thereto.

[0054] (Rail) The rail 48 is a slide rail, and as shown in FIGS. 8(A) and 8(B), includes a first rail 48A fixed to the protruding part 42A of the fixing member 42 and a second rail 48B fixed to the connecting part 44BC of the inner frame 44B.

[0055] The first rail 48A and the second rail 48B are arranged to mesh with each other, and in a state of being in contact with each other, as shown by the arrows K3 (see FIG. 8(A)) and K4 (see FIG. 8(B)), they can move in the front-rear direction (X direction, the front-rear direction of the transporter 22). When the first rail 48A and the second rail 48B move relative to each other, the frame 44 moves with respect to the fixing member 42.

[0056] A ball bearing or the like is provided between the first rail 48A and the second rail 48B. Note that the rail 48 can appropriately adjust the lengths of these first rail 48A and second rail 48B in order to adjust the stroke, and may be formed by combining three or more rails.

[0057] As shown in FIG. 5, four sets of rails 48 are provided for each of the inner frames 44B. As a result, the frame 44 can move stably with respect to the fixing member 42.

[0058] (Cylinder) As shown in FIG. 6(B), an extrusion mechanism 50 is fixed to each of the cylindrical members 44AA in the outer frame 44A. As shown in FIGS. 9(A) and (B), this extrusion mechanism 50 is formed including a cylinder 54 and a moving member 52 that moves by the cylinder 54.

[0059] The cylinder 54 is an electric cylinder, and one end thereof is fixed to the surface of the arm 30 (not shown, on the upper side of the paper surface in FIG. 9(A)) of the fixing member 42. The other end of the cylinder 54 is fixed to the moving member 52.

[0060] The moving member 52 is formed including two end plates 52A and 52B and a connecting member 52C that connects the end plates 52A and 52B to each other.

[0061] The cylinder 54 is disposed between the end plates 52A and 52B, and the end of the cylinder 54 is fixed to the surface of the end plate 52A on the side of the end plate 52B. And the frame 44 is fixed to the surface of the end plate 52B on the side opposite to the end plate 52A.

[0062] Here, FIG. 9(A) shows the state where the cylinder 54 is extended the most. When the cylinder 54 is contracted as shown by the arrow K5 from this state, as shown in FIG. 9(B), while the fixing member 42 fixed to the transporter 22 does not move, the moving member 52 and the frame 44 fixed to the moving member 52 move forward (in the X direction, the forward direction of the transporter 22).

[0063] Similarly, when the cylinder 54 is extended as indicated by the arrow K6 from the state shown in Fig. 9(B), as shown in Fig. 9(A), while the fixed member 42 fixed to the transporter 22 does not move, the moving member 52 and the frame 44 fixed to the moving member 52 move rearward (in the X direction, the rear direction of the transporter 22).

[0064] (Magnet) As shown in Fig. 5, a plurality of magnets 46 for detachably adsorbing the steel plate 10 are attached to the frame 44. The magnet 46 is formed including a magnet body 46A, a shaft portion 46B, and a fixing portion 46C, as also shown in Figs. 9(A) and 9(B).

[0065] The magnet body 46A is a portion capable of fixing the steel plate 10 (see Fig. 2, etc.) by magnetic force. As shown in Fig. 5, the portion (adsorbing surface) in contact with the steel plate 10 is rectangular. The switching of the magnetic force in the magnet body 46A is performed manually (by hand).

[0066] The fixing portion 46C is a portion fixed to the frame 44. Here, in the magnet 46 attached to the outer frame 44A, the portion fixed to the frame 44 in the fixing portion 46C is formed in a cylindrical shape. Thereby, the magnet 46 is slidably fixed to the outer frame 44A as indicated by the arrow K7 in Fig. 5.

[0067] On the other hand, the magnet 46 attached to the inner frame 44B is arranged so as to straddle the protruding portion 42A of the fixed member 42 and does not slide with respect to the inner frame 44B.

[0068] Note that the magnet 46 having the fixing portion 46C formed in a cylindrical shape may be attached anywhere on the cylindrical member 44AA in the outer frame 44A. Further, this magnet 46 may be attached to the rod-shaped member 44AB. Furthermore, this magnet 46 may be attached to the inner frame 44B.

[0069] As shown in FIGS. 9(A) and 9(B), the shaft portion 46B of the magnet 46 is a connecting member that connects the magnet main body 46A and the fixing portion 46C, and can rotate about the X direction as the rotation axis. Thereby, as indicated by arrows K8 and K9 in FIG. 5, the magnet main body 46A can rotate along the in-plane direction of the frame 44.

[0070] <Function and Effect> In the attachment 40 as a building material holding jig according to an embodiment of the present invention, as indicated by an arrow K7 in FIG. 5, the magnet 46 that fixes the steel plate 10 (see FIG. 2 etc.) can slide along the outer frame 44A in the frame 44.

[0071] Therefore, the adsorption position of the steel plate 10 can be changed. Thereby, steel plates of various sizes and shapes can be held. Further, even when the steel plate has irregularities or holes (for example, the through hole 10A of the steel plate 10), these can be avoided and held by the magnet 46.

[0072] Further, in the attachment 40 according to the embodiment of the present invention, the magnet 46 attached to the inner frame 44B shown in FIG. 5 can slide along the in-plane of the outer frame 44A together with the inner frame 44B (arrow K2 in FIG. 6).

[0073] Therefore, not only the outer magnet 46 (the magnet 46 attached to the outer frame 44A) shown in FIG. 5 but also the adsorption position of the inner magnet 46 (the magnet 46 attached to the inner frame 44B) can be changed.

[0074] Thereby, steel plates of various shapes can be held. Further, even when the steel plate has irregularities or holes (for example, the through hole 10A of the steel plate 10), these can be avoided and held by the magnet.

[0075] In the attachment 40 according to the embodiment of the present invention, the outer frame 44A in the frame 44 is formed of a cylindrical member 44AA and a rod-shaped member 44AB. Further, by changing the insertion depth of the rod-shaped member 44AB into the cylindrical member 44AA, the size of the frame 44 can be changed. Thereby, steel plates of various sizes can be held.

[0076] In the attachment 40 according to the embodiment of the present invention, as shown in FIGS. 8(A) and 8(B), the frame 44 is movably supported by a rail 48 that protrudes in the out-of-plane direction from the fixing member 42.

[0077] Therefore, as shown by arrows K5 and K6 in FIGS. 9(A) and 9(B), by expanding and contracting the cylinder 54, the frame 44 can be moved in the out-of-plane direction as shown by arrows K3 and K4 in FIG. 8. For this reason, compared with the mode of moving the transporter 22 and the arm 30 to attach the steel plate 10 to the attachment surface 12A, the steel plate 10 can be attached to the attachment surface 12A with higher accuracy.

[0078] In the attachment 40 according to the embodiment of the present invention, the rectangular magnet body 46A can not only move in the extending direction of the frame 44 as shown by arrow K7 in FIG. 5, but also rotate along the in-plane direction of the frame 44 as shown by arrows K8 and K9. For this reason, when there are irregularities or holes in the steel plate 10, it is easier to avoid them.

[0079] <Other Embodiments> In the attachment 40 according to the embodiment of the present invention, the outer frame 44A in the frame 44 is formed of a cylindrical member 44AA and a rod-shaped member 44AB, and the size of the outer frame 44A is variable, but the embodiment of the present invention is not limited to this.

[0080] For example, the outer frame 44A may have a configuration in which its size does not change. Even if the size of the outer frame 44A does not change, if the magnet 46 can slide along the frame 44, the effect of being able to hold steel plates of various sizes can be obtained.

[0081] Similarly, in the attachment 40 according to the embodiment of the present invention, although the inner frame 44B is slidable along the in-plane direction of the outer frame 44A, the embodiment of the present invention is not limited thereto.

[0082] For example, even if the inner frame 44B is not slidable relative to the outer frame 44A, if the magnet 46 can slide along the frame 44, the effect of holding steel plates of various sizes can be obtained.

[0083] Also, the attachment 40 in the present invention includes the rail 48 and the cylinder 54, but the embodiment of the present invention is not limited thereto. For example, the attachment 40 does not necessarily have to include the rail 48 and the cylinder 54. Even without the rail 48 and the cylinder 54, the steel plate 10 can be attached to the attachment surface 12A by moving the transporter 22 or the arm 30.

[0084] Also, in the attachment 40 in the present invention, the adsorption surface of the magnet body 46A does not necessarily have to be rectangular. Also, the magnet body 46A does not necessarily have to be rotatable. Even if the adsorption surface of the magnet body 46A is not rectangular or is not rotatable, if it can slide along the frame 44, the effect of holding steel plates of various sizes can be obtained.

Explanation of Reference Numerals

[0085] 10 Steel plate 30 Arm 40 Attachment (Building Material Holding Tool) 42 Fixed member 44 Frame 44A Outer frame 44AA Cylindrical member 44AB Rod-shaped member 44B Inner frame 46A Magnet body (Magnet) 48 Rail 54 Cylinder

Claims

1. A rod-shaped fixing member fixed to an arm of a transporter for transporting a steel plate, A frame-shaped frame attached to the fixing member, A plurality of magnets slidably attached along the frame with respect to the frame and detachably adsorbing the steel plate, Comprising, The frame is, A frame-shaped outer frame to which the magnet is attached, A latch-shaped inner frame spanned across the outer frame at a position surrounded by the outer frame, Magnets are also fixed to the inner frame, and the inner frame is slidable along the plane of the outer frame with respect to the outer frame. Building material holding jig.

2. The frame has a cross-sectional plane along the axial direction of the fixing member, The magnet adsorbs the steel plate whose in-plane direction is along the cross-sectional plane of the frame. The building material holding jig according to Claim 1.

3. The outer frame is, A cylindrical member formed in a cylindrical shape, A rod-shaped member inserted into the cylindrical member, By changing the insertion depth of the rod-shaped member into the cylindrical member, the size of the outer frame can be changed. The building material holding jig according to Claim 1.

4. A rod-shaped fixing member fixed to an arm of a transporter for transporting a steel plate, A frame-shaped frame attached to the fixing member, A plurality of magnets slidably attached along the frame with respect to the frame and detachably adsorbing the steel plate, Comprising, A rail protruding from the fixing member in the out-of-plane direction of the frame and supporting the frame so as to be movable in the out-of-plane direction, A cylinder attached to the fixing member and moving the frame in the out-of-plane direction, A building material holding jig provided with.

5. The magnet has a rectangular adsorption surface and is rotatable along the in-plane direction of the frame. The building material holding jig according to any one of Claims 1 to 4.

6. The cylindrical member is formed in a portal shape and a pair is provided, A pair of the rod-shaped members is provided, Both ends of the rod-shaped member are inserted into the respective opposing pair of cylindrical members. The building material holding jig according to Claim 3.

7. The rail protrudes from the fixing member in one direction of the out-of-plane direction of the frame, The cylinder is attached to the fixing member in the other direction of the out-of-plane direction of the frame. The building material holding jig according to Claim 4.

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