Conveyance frame

Abstract

To provide a conveyance frame 1 for conveying a large-sized member to be placed such as a door frame D placed on a loading platform of a conveyance vehicle, which is provided with a base part 2 placed on the loading platform and a placement part 3 on which the member to be placed is placed, compactifying a conveyance space for conveying the conveyance frame 1 in an empty state without any member to be placed to a conveyance source.SOLUTION: The placement part 3 is pivotally supported on the base part 2 so as to be freely swingable up and down, and is configured so as to be freely changeable between a placement posture of standing upright on an inclined plane from the base part 2 and a storage posture of overlapping the base part 2, and the placement part 3 in the placement posture is supported via support members 11 and 12 which are detachably provided on the base part 2.SELECTED DRAWING: Figure 11

Description

[Technical field]

[0001] The present invention relates to the technical field of a transport platform used for transporting large transported members such as door frames that are installed in openings such as entrances and exits of buildings. [Background technology]

[0002] Generally, when installing a door device in an opening such as the entrance or exit of a building, the door frame is assembled in a factory, and the assembled door frame is transported to the site and installed in the opening, after which the door body and other parts are installed to complete the assembly of the door device. In such cases, large transported members such as door frames may be loaded (placed) on the platform of a transport vehicle such as a truck for transport, and in this case, in order to protect the transported members, a large transport platform corresponding to the size of the transported members is prepared, and the transported members are transported in an attached state such as by being tied to the transport platform. A transport platform used in this case is known to have a base portion mounted on the platform and a placement portion standing on an inclined plane from the base portion, and the transported members are placed on the placement portion at an angle, so that the placement height is lower than the actual height of the transported members, allowing them to be transported in a stable state (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3224155 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the conventional transport platform is configured with the mounting portion standing fixedly in an inclined plane relative to the base portion. Therefore, when the empty transport platform is reversed (transported) to the shipping source such as a factory after the transported parts have been unloaded at the installation site, the empty transport platform is reversed (transported) to the shipping point such as a factory, with the mounting portion remaining in an inclined position and taking up a large amount of space, just as when it is shipped. As a result, a large transport space is required even though the platform is empty and does not contain any transported parts, resulting in problems such as poor transport efficiency, and these are the problems that the present invention aims to solve. [Means for solving the problem]

[0005] The present invention has been created in consideration of the above-mentioned situation and with the aim of solving these problems. The invention of claim 1 is a transport platform that is mounted on the loading platform of a transport vehicle for transporting large transported items such as door frames to be installed at the entrances and exits of buildings, and is configured to include a base portion and an inclined flat loading portion on which the transported items are placed, wherein the lower end portion of the loading portion is journaled on the base portion so as to be freely swingable up and down, so that the loading portion can be freely changed between a loading position in which it stands upright on an inclined flat surface from the base portion and a stored position in which it overlaps with the base portion, and the base portion is provided with a support member for supporting the loading portion in the loading position which can be freely attached and detached or swingable. The invention of claim 2 is a transportation stand as described in claim 1, characterized in that the loading section is composed of a lower loading half, the lower end of which is supported by a base section so that it can swing freely up and down, and an upper loading half, the lower end of which is supported by the upper end of the lower loading half so that it can swing freely up and down, and is therefore freely transformable between a loading position in which the lower loading half and the upper loading half are deployed in an inclined plane from the base section in that order, and a storage position in which the lower loading half and the upper loading half are folded onto the base section in that order. The invention of claim 3 is the transportation platform according to claim 2, characterized in that the support members include first and second support members that separately support both mounting halves in the mounting position. The invention of claim 4 is the transportation platform according to claim 2, characterized in that the placement section is provided with a folding restriction means for restricting folding of both placement halves that are unfolded into a plane relative to each other. The invention of claim 5 is the transportation platform according to claim 4, characterized in that at least one of the two mounting halves of the mounting section in the folding-restricted mounting position is supported via a support member. The invention of claim 6 is a transportation stand as described in any one of claims 1 to 5, characterized in that the base portion has a support member space in which the support member is arranged on both sides of the support portion space in which the support portion is arranged. Effect of the Invention

[0006] By adopting the invention of claim 1, when a transport platform mounted on the bed of a transport vehicle for transporting large transported items such as door frames is provided with a base portion and an inclined flat loading portion, the loading portion is configured to be freely transformed between a loading position in which it stands up like an inclined flat surface and a stored position in which it overlaps with the base portion, and the loading portion in the loading position is supported by a support member that is detachably or swayably attached to the base portion.As a result, when an empty transport platform is reversed, the loading portion on which the large transported items are placed can be folded into a compact stored position in which it overlaps with the base portion, making it possible to transport the large transported items in a reduced transport space. By adopting the invention of claim 2, the loading section is composed of two loading halves, including a lower loading half that is pivotally supported on the base section so that it can swing up and down, and an upper loading half that is pivotally supported on the lower loading half so that it can swing up and down.The loading section can be transformed into a loading position in which the lower loading half and the upper loading half are deployed in an inclined plane in that order, and a storage position in which the upper loading half and the lower loading half are folded in that order.As a result, while large transported items can be loaded onto it, it can be stored in a compact storage position, making transportation more reliable when the transport space is reduced. By adopting the invention of claim 3, the lower loading half and the upper loading half in the loading position are each supported separately by first and second support members standing up from the base portion, thereby enabling the transported material to be loaded stably. By adopting the invention of claim 4, the two loading halves, which are unfolded into a flat plane, can be maintained in a flat state by the folding control means that controls the folding of the two halves into one another, thereby enabling the transported items to be loaded stably. By adopting the invention as defined in claim 5, when the folding is restricted, it is sufficient for at least one of the mounting halves to be supported by a support member, thereby simplifying the structure. By adopting the invention of claim 6, the arrangement space for the support members that support the mounting part in the mounting position is arranged as the support member spaces on both sides of the mounting part space in which the mounting part is arranged, so that the work of attaching and detaching the support members to the mounting part in the mounting position can be done outside the mounting part, eliminating the need to crawl under the mounting part as in the case where the work is done inside the mounting part space, and workability is not impaired. [Brief description of the drawings]

[0007] [Figure 1] 13A and 13B are a front view and a side view of the transportation platform with the door frame placed thereon. [Diagram 2] 13A and 13B are a front view and a side view of the transportation platform without a door frame placed thereon. [Diagram 3] 1A and 1B are a plan view and a side view of the transportation stand in a storage position. [Figure 4] 13(A), (B), and (C) are side views showing the process of assembling the transportation platform from the storage position to the placement position. [Diagram 5] FIG. 13 is a side view showing a state in which a plurality of transport racks in a storage position are stacked. [Figure 6] 1A, 1B, and 1C are a plan view, a side view, and a front view of the base part. [Figure 7] (A), (B), and (C) are a plan view, a side view, and a front view of the lower placement half. [Figure 8] 1A, 1B, and 1C are a plan view, a side view, and a front view of the upper loading half. [Figure 9]13A and 13B are side views of the main part showing a state in which an upper end portion of a second support member is attached to a second bracket, and a state in which an upper end portion of a first support member is attached to a first bracket. [Figure 10] 13A and 13B are a front view and a cross-sectional front view of a main part showing a state in which an upper end portion of a first support member is attached to a first bracket. [Figure 11] FIG. [Figure 12] 13A and 13B show a second embodiment, in which (A) and (B) are a front view and a side view of the transportation platform when no door frame is placed thereon. [Figure 13] 13A and 13B are side views of the main part of the folding restricting means when it is in the released state and the folding restricting state, respectively, according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a transport platform mounted on the platform of a transport vehicle such as a truck in order to transport a door frame D, which is an example of a large transported member, by vehicle. The transport platform 1 is configured with a base portion 2 that is a horizontal plane and is mounted on the platform, and a placement portion 3 that is an inclined plane and on which the door frame D is placed.

[0009] The base portion 2 is composed of a frame material formed in a criss-cross pattern in a plan view, with a number of vertical frame members 4 that are long in the front-to-back direction and arranged at appropriate intervals in the left-to-right direction, and a number of horizontal frame members 5 that are long in the left-to-right direction and welded (fixed) to the top surfaces of the vertical frame members 4 at appropriate intervals in the front-to-back direction.The base portion 2 is composed of a frame material formed in a criss-cross pattern in a plan view, with a number of vertical frame members 4 that are long in the front-to-back direction and welded (fixed) to the top surfaces of the vertical frame members 4 at appropriate intervals in the front-to-back direction, and the transport platform 1 can be easily raised and lowered by inserting the left and right claws of a forklift (not shown) between any adjacent vertical frame members 4 and moving the claws up and down.

[0010] On the other hand, among the horizontal frame members 5, the frontmost horizontal frame member 5a and the adjacent second horizontal frame member 5b are narrower than the opposing gap between the adjacent horizontal frame members 5, but the second horizontal frame member 5b is provided only on the left and right sides, and is not provided in the center portion. Furthermore, the frontmost horizontal frame member 5a has an auxiliary horizontal frame member 5aa stacked (laminated, overlapped) on the upper side. And between the auxiliary horizontal frame member 5aa and the second horizontal frame member 5b, a plate member 6 inclined in a front-high, rear-low shape is provided in a bridging state, but the plate member 6 is provided on both the left and right sides, and is not provided in the center portion (middle portion) where the second horizontal frame member 5b is not provided. Incidentally, the plate member 6 is set to have an inclination angle perpendicular to the inclination of the placement portion 3 inclined in the placement posture as described later, and is considered to correspond to the inclination of the bottom surface of the placed door frame D. Furthermore, one end of a hinge 7 is attached to the third horizontal frame member 5c from the front end at an appropriate interval in the left-right direction.

[0011] The mounting portion 3 is configured to include a lower mounting half 8 which is supported on the base portion 2 so as to be able to swing freely in the vertical direction by attaching the other end of the hinge 7, and an upper mounting half 9 which is supported on the upper end of the lower mounting half 8 via a hinge 10 so as to be able to swing freely in the vertical direction. Both mounting halves 8, 9 are formed in a planar shape by rectangular frame portions 8a, 9a and vertical and horizontal bar portions 8b, 8c, 9b, 9c within the frame frames 8a, 9a. Incidentally, each of the frame portions 8a, 9a is configured to include upper horizontal frame portions 8aa, 9aa, lower horizontal frame portions 8ab, 9ab, and left and right vertical frame portions 8ac, 9ac.

[0012] The lower loading half 8 and the upper loading half 9 are supported by hinges 10 between the upper horizontal frame portion 8aa of the lower loading half 8 and the lower horizontal frame portion 9ab of the upper loading half 9. With this configuration, the loading portion 3 is configured to be able to transform between a storage position in which the lower loading half 8 is overlapped on the base portion 2 and the upper loading half 9 is overlapped on top of that, in a folded (zigzag, zigzag) state, and a loading position in which the door frame D is placed on top of the base portion 2, standing upright in an inclined plane that is low in the front and high in the rear, as described below.

[0013] Incidentally, when in the stored position, the transport platform 1 can be stacked vertically as shown in FIG. 5, and is configured so that it can be loaded onto the platform of a transport vehicle in such a stacked state and transported to the destination. On the other hand, the procedure for changing the mounting portion 3 in the storage position to a mounting position on which the door frame D can be placed is, for example, as shown in Figure 4, to an inclined position in which the lower mounting half 8 with the upper mounting half 9 overlapping is lifted up on the upper horizontal frame portion 8aa side so that the lower horizontal frame portion 8ab becomes the lower end and is connected to the horizontal frame material 5c of the base portion 2, and the lower mounting half 8 in this state is supported by the first support member 11 described below which stands upright (erects) vertically from the base portion 2. Next, the upper mounting half 9 is swung upward relative to the lower mounting half 8 and unfolded flat relative to the lower mounting half 8 in an inclined position, and this inclined upper mounting half 9 is supported via the second support member 12 described below which stands up vertically from the base portion 2. By configuring in this manner, the mounting portion 3 can be placed in a mounting position in which both the upper and lower mounting halves 8, 9 stand upright in an inclined plane from the base portion 2.

[0014] As described above, the mounting portion 3 is supported in a mounting position by the first and second support members 11, 12. The first and second support members 11, 12 each have their lower ends fitted (externally fitted) into the first and second support protrusions 4b, 4c provided on the upper surface of the left and right end vertical frame members 4a which form the support member space S2 of the base portion 2. The fitting portions are fastened via wing bolts (fastening members) 13, so that the mounting portion 3 is detachably attached in an upright position perpendicular to the base portion 2. The upper edge portions of the first and second support members 11, 12 thus mounted in an upright position can be detachably attached to the left and right outer surface portions of the left and right vertical frame portions 8ac, 9ac of the lower mounting half 8 and upper mounting half 9, which are in a mounting position erected on the inclined plane.

[0015] Specifically, a first bracket 8d is provided on the outer left and right side surfaces of the left and right vertical frame parts 8ac of the lower placement half 8 so that the placement part 3 (lower placement half 8) is horizontal in the front-rear direction when the placement part 3 (lower placement half 8) is erected in the inclined placement posture, and the first bracket 8d has a U-shape with an open lower end edge. The first bracket 8d is fitted to the upper end edge of the first support member 11 erected when the lower placement half 8 is in the placement posture, and fastened via a wing bolt 13, so that the lower placement half 8 in the placement posture can be supported via the first support member 11. In this case, the first bracket 8d is provided with a slip-out prevention piece 8da to prevent the first support member 11 from slipping out in the front-rear direction. Similarly, for the upper placement half 9, the upper end of the second support member 12, the lower end of which is fitted and supported by the second support protrusion 4c, is fitted into a U-shaped second bracket 9d provided on the left and right vertical frame parts 9ac of the upper placement half 9, and fastened with a wing bolt 13, so that the upper placement half 9 in the placed position can be supported by the second support member 12. And, like the first bracket 8d, this second bracket 9d is also provided with a slip-out prevention piece 9da to prevent the second support member 12 from slipping out in the front-rear direction. Incidentally, the wing bolt 13 is used to detachably attach the lower ends of the first and second support members 11, 12 to the first and second support protrusions 4b, 4c provided on the base portion 2, and to detachably attach the upper ends to the lower mounting half portion 8 and upper mounting half portion 9. Therefore, the wing bolt 13 is screwed into a nut 13a welded to the corresponding mounting member, and a pin 13b to prevent it from falling out is provided at the tip of the bolt. However, attachment by bolt tightening is not necessarily required, and it may simply be attached by passing through a pin in a state in which it is prevented from falling out.

[0016] In addition, in the transport platform 1 of this embodiment, when the mounting section 3 is folded and stored in the storage position, the first and second support members 11, 12 removed from the base section 2 are placed and stored in the storage space S3 between the second and third horizontal frame members 5b, 5c, and the removed wing bolt 13 is configured to be stored and attached to the bolt storage plate 4d provided in the storage space S3 portion of the left and right end vertical frame members 4a, so as to prevent it from being lost. In addition, care must be taken to tie down the placed door frame D on both mounting halves 8, 9 to prevent it from falling off, and protruding members (bolts) 14 are provided for hanging a fastening belt (string, rope) to be used in this case.

[0017] In the present embodiment configured as described above, when a transport platform 1 for transporting large transported members such as a door frame D by vehicle is provided with a base portion 2 to be placed on the loading platform of the transport vehicle and an inclined flat mounting portion 3, the mounting portion 3 is configured to be freely transformed between a mounting position in which it stands on an inclined flat surface and a storage position in which it overlaps the base portion 2, and the mounting portion 3 in the mounting position is supported by first and second support members 11, 12 which are detachably provided on the base portion 2. As a result, when the empty mounting portion 3 after transporting a large transported member such as a door frame D is sent back to the source of transport, it can be transported in a compact state where the mounting portion 3 is folded into a storage position in which it overlaps the base portion 2.

[0018] Furthermore, in this case, the loading section 3, which is composed of two loading halves with a lower loading half 8 journalled to the base section 2 so as to be freely swingable up and down, and an upper loading half 9 journalled to the lower loading half 8 so as to be freely swingable up and down, can be transformed into a loading position in which the lower loading half 8 and the upper loading half 9 are deployed in an inclined plane relative to the base section 2 in that order, and a storage position in which the upper loading half 9 and the lower loading half 8 are folded in that order.As a result, while large transported items can be placed on it, it can be stored in a compact storage position, making transportation more reliable when the transport space is reduced. Furthermore, when the mounting portion 3 is in the mounting position, the lower mounting half 8 and the upper mounting half 9 are each supported separately by the first and second support members 11 and 12 that stand up from the base portion 2, allowing stable support of the mounting portion 3, and when the mounting portion 3 is in the storage position, the first and second support members 11 and 12 can be removed from the base portion 3 and stored compactly in the storage space S3. Incidentally, in this embodiment, the first and second support members 11, 12 are configured to be attached to the base portion 2 in a freely detachable manner, but the lower ends can be configured to be freely swingable up and down relative to the base portion 2. In this way, the support members can be stored in a laid-down position on the left and right sides of the base portion in the space S2 for the support members, or on the space S1 for the placement portion. When this embodiment is implemented, the available space on the base portion 2 can be used to place all or some of the various accessory parts of the door device, making it highly convenient.

[0019] Of course, the present invention is not limited to the above-described embodiment, and may be implemented as a second embodiment shown in Fig. 12 and subsequent figures. In the second embodiment, the same reference numerals as in the first embodiment are used to designate components having the same functions as those in the first embodiment, and the following description will focus mainly on components that differ from those in the first embodiment.

[0020] In the second embodiment, the mounting portion 3 in a flat unfolded state is provided with a folding restriction means 15 for restricting the mounting halves 8, 9 from folding together. The folding restriction means 15 in this embodiment is provided between a pair of left and right vertical bars 8b of the lower placement half 8 and the opposing vertical bar 9b of the upper placement half 9. Specifically, a support rod 15b is attached to a support cylinder 15a provided on the underside of the upper placement half vertical bar 9b so as to be vertically movable, while a cylindrical support receiving portion 15c is provided on the underside of the lower placement half vertical bar 8b, through which the support rod 15b passes so as to be removable. The support rod 15b has an operating portion 15bb at its base end, which is bent in an L-shape with respect to the rod body 15ba, and the operating portion 15bb movably passes through a U-shaped guide hole 15d provided in the support cylinder portion 15a. When the operating portion 15bb is engaged with the upper release groove 15da formed in the guide hole 15d, the tip of the support rod 15b is located at a position where it does not protrude from the lower end edge of the lower horizontal frame portion 9ab of the upper placement half 9, whereas when the operating portion 15bb is engaged with the lower engagement groove 15db of the guide hole 15d, the tip of the support rod 15b fits into the support receiving portion 15c, thereby restricting the folding of the lower placement half 8 and the upper placement half 9. The mounting portion 3, which is thus unfolded into a flat surface with the lower mounting half 8 and the upper mounting half 9 folded and restricted, is configured in this second embodiment to be supported in the mounting position by a support member 12 which corresponds to the second support member 12 in the first embodiment. Incidentally, the guide hole 15d has a guide groove 15dc facing in the vertical direction formed on the side of the support tube portion 15a, and a release groove 15da and a locking groove 15db formed on the rear side of the support tube portion 15a, so that the operating portion 15bb engaged with the locking groove 15db will not inadvertently displace toward the guide groove 15dc, causing the support rod 15b to come out of the support receiving portion 15c.

[0021] In the second embodiment thus configured, with the mounting portion 3 in a mounting position standing up from the base portion 3 like an inclined plane, by operating the operating portion 15bb from the release groove 15da to the locking groove 15db, the tip of the main body portion 15ba of the support rod 15b fits into the support receiving portion 15c, thereby restricting the folding of the lower mounting half 8 and the upper mounting half 9. By doing this, when supporting the mounting portion 3 in the mounting position, it is not necessary to have a pair of first and second support members 11, 12 at the front and rear as in the first embodiment, and it is sufficient to have only the support member 12 equivalent to the second support member 12 and only one equivalent to the first support member 11. [Industrial Applicability]

[0022] The present invention can be used as a transport platform used for transporting large transported members such as door frames that are installed in openings such as entrances and exits of buildings. [Explanation of symbols]

[0023] 1 Transport stand 2 Base 3. Placement section 4 Vertical frame material 5 Horizontal frame material 6 Plate material 7 Hinge 8 Lower loading half 8d First bracket 9 Upper loading half 9d Second bracket 10 Hinge 11 First support member 12 Second support member 15 Folding control means D. Door frame S1 Placement space S2 Space for support members

Claims

1. A transport platform mounted on the platform of a transport vehicle for transporting large transported objects such as door frames to be installed at the entrances and exits of buildings, the transport platform being configured to include a base portion and an inclined flat loading portion on which the transported objects are placed, The mounting portion is pivotally supported at its lower end on the base portion so as to be capable of swinging up and down, and is configured to be freely transformed between a mounting posture in which the mounting portion stands upright on an inclined plane from the base portion and a storage posture in which the mounting portion overlaps the base portion, A transportation platform, characterized in that a support member for supporting a placement portion in a placement position is detachably or swingably provided on a base portion.

2. The placement portion is configured to include a lower placement half portion, the lower end of which is pivotally supported by the base portion so as to be vertically swingable, and an upper placement half portion, the lower end of which is pivotally supported by the upper end of the lower placement half portion so as to be vertically swingable, 2. The transportation platform according to claim 1, which is configured to be freely transformed between a loading position in which the lower half and the upper half are deployed in an inclined plane from the base portion, in that order, and a storage position in which the lower half and the upper half are folded onto the base portion, in that order.

3. 3. The transportation platform according to claim 2, further comprising first and second support members for separately supporting both mounting halves in the mounting position.

4. 3. The transportation platform according to claim 2, wherein the placement portion is provided with a folding restriction means for restricting folding of both placement halves that are unfolded into a plane relative to each other.

5. 5. The transportation platform according to claim 4, wherein at least one of the two mounting halves of the mounting section in the folding-restricted mounting position is supported via a support member.

6. 6. The transportation platform according to claim 1, wherein the base portion is provided with support member spaces for arranging the support members on both sides of the mounting portion space in which the mounting portion is arranged.

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