Work floor, work floor for load-carrying platform, and work floor for rack

Abstract

To improve safety of a work floor.SOLUTION: A work floor 100, 200 detachably attached to a gate plate A or a traverse frame 253 of a transportation rack 250 comprises: a step board 1 serving as a foothold for an operator; a lock 2 for hooking the step board 1 to the gate plate A; and a support 3 connected to the lower surface 17 of the step board 1 to support the step board 1 in a roughly horizontal posture. The support 3 is provided to be changeable in posture between a standing posture roughly perpendicular to the lower surface of the step board 1 and a stored posture falling to the lower surface side of the step board 1. The work floor 100, 200 is provided with a lock mechanism 4 for holding the support 3 in the standing posture.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a work floor that can be detachably attached to a horizontal frame of a transport rack for accommodating and transporting a plurality of materials, equipment, and tools such as awnings provided on the loading platform of vehicles such as trucks, materials for construction and civil engineering, etc., and as an example thereof, a loading platform work floor and a rack work floor.

Background Art

[0002] Conventionally, in cargo handling work, in order to prevent falling from the truck loading platform, etc., a loading platform work floor that can be attached and detached to the awning of the loading platform may be used (see, for example, Patent Document 1). This type of loading platform work floor can be attached not only to the standing awning but also to the laid-down awning.

[0003] The loading platform work floor of Patent Document 1 is provided such that the load support portion that supports the tread board can change its posture between a state of standing with respect to the tread board and a state of lying on top of the tread board. When attaching the loading platform work floor to the awning, the load support portion is raised and brought into contact with the awning. When the loading platform work floor is not in use, the load support portion can be laid down to make it compact. That is, the loading platform work floor of Patent Document 1 has a configuration that is easy to transport between sites.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, since the loading platform work floor of Patent Document 1 does not have a means for fixing the upright posture of the load support part, when the operator gets on the tread board and performs a loading and unloading operation after raising the load support part and bringing it into contact with the rocking plate, due to vibrations during the operation, etc., there is a risk that the load support part may tilt and the loading platform work floor may roll laterally, and there was room for improvement in terms of the safety during the loading and unloading operation.

[0006] By the way, conventionally, in order to transport various panel members for construction (for example, exterior wall panels, eaves panels, etc.) with different widths and thicknesses manufactured in a factory, a transport rack capable of accommodating a plurality of the panel members arranged side by side is known (see, for example, Patent Document 2, etc.).

[0007] The specific handling of this type of transport rack is as follows, for example. That is, panel members taken out from the manufacturing line of the factory are accommodated in a plurality side by side in a vertical posture in the transport rack. Next, the transport rack accommodating the panel member group is loaded onto the loading platform of a vehicle such as a truck and transported to the construction site. Then, the panel members in the transport rack on the loading platform are lifted one by one by a crane or the like installed at the construction site and attached to a predetermined location of the building at the construction site.

[0008] When lifting the panel members in the transport rack, a hanging operation is performed in which a wire is passed through a lifting jig such as an eyebolt attached to the panel member and a hook of a crane or the like is hooked on the wire. At the construction site, it is often the case that the panel members are lifted one by one while the transport rack is placed on the loading platform of a vehicle such as a truck. In this case, in the hanging operation, there is a risk that the operator may ride on the thin horizontal frame of the transport rack and perform the operation, which becomes a high-altitude operation and may cause the operator to fall. Since the transport rack can accommodate not only panel members but also materials, equipment, and instruments for construction and civil engineering, etc., there is also a risk of causing the same problem when taking out (lifting) these materials, equipment, and instruments from the transport rack.

Means for Solving the Problem

[0009] An object of the present invention is to provide a work floor, a loading platform work floor, and a rack work floor that have been improved in consideration of the above-described current situation.

[0010] The present invention relates to a work floor that can be detachably attached to a tipping plate provided on a loading platform of a vehicle or a horizontal frame of a transport rack that stores and transports a plurality of construction materials and the like for construction work. The work floor includes a tread plate that serves as a foothold for an operator, a locking portion for hooking the tread plate on the tipping plate, and a support body that is connected to the lower surface of the tread plate and supports the tread plate in a substantially horizontal posture. The support body is provided so as to be capable of changing its posture between an upright posture substantially perpendicular to the lower surface of the tread plate and a storage posture lying down on the lower surface side of the tread plate, and is provided with a locking mechanism for holding the support body in the upright posture.

[0011] Among the work floors of the present invention, in the loading platform work floor that can be detachably attached to a tipping plate provided on the loading platform of a vehicle, the support body includes an upper side portion disposed along the lower surface of the tread plate, and the locking mechanism is a toggle clamp that presses the upper side portion against the lower surface of the tread plate with respect to the support body in the upright posture, or a snap lock or a toggle clamp that pulls a hook member fixed to the upper side portion with respect to the support body in the upright posture in a direction opposite to the posture change direction of the support body toward the storage posture side.

[0012] Further, the locking portion may include a fixing portion fixed to the lower surface of the tread plate and a hooking portion extending downward from one end portion of the fixing portion, and the support body and the locking mechanism may be attached to the fixing portion.

[0013] Furthermore, the hooking portion may be provided at an end portion of an extending portion of the fixing portion extending outside one side surface of the tread plate, and a reinforcing member fixed to the upper surface of the extending portion and one side surface of the tread plate may be provided.

[0014] Among the working floors of the present invention, in the rack working floor that can be detachably attached to the horizontal frame of a transport rack for accommodating and transporting a plurality of construction and civil engineering materials and equipment, etc., the lock mechanism may be provided with a snap lock that locks the support body in the standing posture so that its posture cannot be changed with respect to the tread plate.

[0015] A rack working floor that can be detachably attached to the horizontal frame of a transport rack for accommodating and transporting a plurality of construction and civil engineering materials and equipment, etc., among the working floors of the present invention, wherein the support body has a support surface portion that can abut against the outer surface of a column or auxiliary column constituting the transport rack, the included angle formed by the tread plate and the support surface portion of the support body is set to an obtuse angle, and in a state of being attached to the horizontal frame of the transport rack, the tread plate may be configured to incline obliquely downward toward the transport rack.

Effect of the Invention

[0016] The working floor of the present invention is configured such that the support body that supports the tread plate can be changed in posture between a standing posture and a storage posture, and is provided with a lock mechanism for holding the support body in the standing posture. Therefore, while it can be compactly stored in a storage posture with the support body laid down, during use, by holding the support body in the standing posture by the lock mechanism, the inclination of the support body can be prevented and the safety can be improved.

Brief Description of the Drawings

[0017]

Figure 1

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Figure 15

[0018] Hereinafter, embodiments of the present invention will be described based on the drawings. While referring to FIGS. 1 to 5, the outline of the loading platform working floor 100 will be described. In the following description, terms indicating specific directions and positions (for example, "front", "rear", "front and rear", "left and right", etc.) are used, but these are based on the direction seen from an operator facing the loading platform from the outside of the loading platform with respect to the tilting plate A to which the loading platform working floor 100 is attached. These terms are used for convenience of explanation and do not limit the technical scope of the present invention.

[0019] [Outline of the First Embodiment in the Loading Platform Working Floor] As shown in FIGS. 1 to 5, the loading platform work floor 100 of the first embodiment includes a tread plate 1 that serves as a work platform for the operator, a locking portion 2 for hooking the tread plate 1 onto the tilt plate A, and a support body 3 that is connected to the lower surface 17 of the tread plate 1 and supports the tread plate 1 in a substantially horizontal posture. As shown in FIG. 5, the support body 3 is provided so that its posture can be changed between an upright posture substantially perpendicular to the lower surface 17 of the tread plate 1 and a storage posture lying down on the lower surface 17 side of the tread plate 1. The loading platform work floor 100 includes a locking mechanism 4 for holding the support body 3 in the upright posture.

[0020] As shown in FIGS. 1 and 4(B), the loading platform work floor 100 can be detachably attached to the tilt plate A provided on the loading platform of a vehicle such as a truck, and can be used as a work platform for the operator. The tilt plate A can be either a side tilt plate provided on the left and right sides of the loading platform or a rear tilt plate provided at the rear. Further, the loading platform work floor 100 of the first embodiment can be installed on either the upright tilt plate A or the tilted tilt plate A.

[0021] [Tread plate] The tread plate 1 of the loading platform work floor 100 serves as a work platform for the operator and is formed of a tread plate made of an aluminum alloy. Note that the tread plate 1 is not limited to being made of an aluminum alloy, and it can be formed of any material such as steel or hard plastic.

[0022] The tread plate 1 includes a substantially rectangular top plate portion 11, a pair of side wall portions 12 provided along the long side edge portion of the back surface of the top plate portion 11, a reinforcing wall portion 13 provided on the back surface of the top plate portion 11 along the side wall portions 12, and a pair of left and right end face portions 14 fixed to both ends of the top plate portion 11, the side wall portions 12, and the reinforcing wall portion 13. For example, the top plate portion 11 is a rectangular aluminum alloy with a length of 1500 mm and a width (depth) of 240 mm. Note that the size of the top plate portion 11 is not limited to this, and any size can be used as long as it can ensure workability as a work platform for the operator. Further, the top plate portion 11 may be provided with an anti-slip with unevenness or a through hole for draining water.

[0023] The side wall portion 12 and the reinforcing wall portion 13 are made of an aluminum alloy and are provided parallel to and spaced apart from each other along the longitudinal direction of the top plate portion 11. The two side wall portions 12 on the back side (the side of the rake plate A) and the front side are fixed to the back surface of the top plate portion 11 along the back side long edge portion and the front side long edge portion of the top plate portion 11. The reinforcing wall portion 13 is fixed to the back surface of the top plate portion 11 at an intermediate portion between the two side wall portions 12 along the long edge portion of the top plate portion 11.

[0024] In the first embodiment, the outward side surfaces of the side wall portions 12 on the back side and the front side form one side surface 15 and the other side surface 16 of the tread plate 1. Also, the lower surfaces (the surfaces opposite to the top plate portion 11) of the side wall portion 12 and the reinforcing wall portion 13 form the lower surface 17 of the tread plate 1. Inside the tread plate 1, a cavity portion 18 that opens to the lower surface 17 side is formed between the side wall portion 12 and the reinforcing wall portion 13.

[0025] Note that the side surfaces 15 and 16 of the tread plate 1 may be formed by bending the long edge portion of the metal plate forming the top plate portion 11 to the back side. Also, the number of the reinforcing wall portions 13 provided on the back side of the top plate portion 11 may be two or more, or the reinforcing wall portion 13 may not be provided. Further, the tread plate 1 may be formed of a single plate-like member.

[0026] The end face portion 14 is formed of a substantially rectangular aluminum alloy plate material. The top plate portion 11, the side wall portion 12, the reinforcing wall portion 13, and the end face portion 14 are connected by, for example, welding. However, the method by which these members are fixed to each other is not limited to this, and they may be fixed by, for example, bolt fastening.

[0027] [Locking portion] As shown in FIGS. 1 to 5, the loading platform work floor 100 includes a locking portion 2 for hooking the tread plate 1 on the rake plate A. In the first embodiment, the loading platform work floor 100 includes a pair of left and right locking portions 2 provided at positions near the left and right edge portions of the tread plate 1. The locking portion 2 has a substantially L-shaped form in side view formed of an aluminum alloy plate material, and includes a fixing portion 21 fixed to the lower surface 17 of the tread plate 1 and a hooking portion 22 extending downward from one end portion of the fixing portion 21.

[0028] The fixing part 21 extends from the other side surface 16 to one side surface 15 of the pedal 1 and covers the cavity 18. The fixing part 21 is fixed to the lower surfaces of the side wall part 12 and the reinforcing wall part 13 that form the lower surface 17 of the pedal 1 by, for example, welding. The fixing part 21 has an extending part 23 that extends outside (opposite to the other side surface 16) of one side surface 15 of the pedal 1. The hooking part 22 extends downward at a substantially right angle from the tip of the extending part 23 of the fixing part 21 at a position outside the pedal 1 in plan view.

[0029] Note that the fixing part 21 of the locking part 2 is not limited to a flat plate shape, and may be, for example, a solid rod-shaped member, or may be an L-shaped, C-shaped, or pipe-shaped profile. Also, the hooking part 22 is not limited to being integrally formed with the fixing part 21, and may be, for example, fixed to one end of the fixing part 21 by welding. Further, the material of the locking part 2 is not limited to an aluminum alloy, and may be other metals such as steel, or may be hard plastic or the like.

[0030] [Reinforcing member] The loading platform working floor 100 is provided with a reinforcing member 5 fixed to the upper surface of the extending part 23 of the fixing part 21 and one side surface 15 of the pedal 1. In the first embodiment, a plate-shaped reinforcing member 5 made of an aluminum alloy is welded to the extending part 23 and one side surface 15 in an upright posture perpendicular to the upper surface of the extending part 23 and one side surface 15 of the pedal 1. The reinforcing member 5 is disposed from the tip side part (the part on the hooking part 22 side) to the base end side part (the part on the one side surface 15 side) of the upper surface of the extending part 23. The height dimension of the reinforcing member 5 is substantially the same as the height (thickness) dimension of the pedal 1. The reinforcing member 5 has a substantially rectangular form with the upper corner part on the tip side notched in side view.

[0031] The reinforcing member 5 has a lightweight and simple structure and can prevent the bending (especially upward bending) of the extending portion 23. Note that the material and shape of the reinforcing member 5 are not particularly limited as long as the reinforcing member 5 can be fixed to the upper surface of the extending portion 23 and one side surface 15 of the tread plate 1 to prevent the bending of the extending portion 23. For example, the material of the reinforcing member 5 is not limited to an aluminum alloy, and may be other metals such as steel materials, or may be hard plastics or the like.

[0032] In addition, two or more reinforcing members 5 may be provided side by side in the longitudinal direction of the tread plate 1 on the upper surface of one extending portion 23. Further, the tip end portion (the end portion on the hooking portion 22 side) of the reinforcing member 5 may be located at the middle portion in the extending direction of the upper surface of the extending portion 23. Further, the shape of the reinforcing member 5 in side view is not limited to a substantially rectangular shape, and may be, for example, a right triangle. Further, the reinforcing member 5 is not limited to a plate shape, and may be, for example, a C-shaped or L-shaped profile. Further, the fixing method of the reinforcing member 5 to the extending portion 23 and the one side surface 15 is not particularly limited as long as these members can be fixed, such as bolt fastening.

[0033] [Support body] As shown in FIGS. 1 to 5, a support body 3 that supports the tread plate 1 in a substantially horizontal posture is connected to the lower surface 17 of the tread plate 1. In the first embodiment, the support body 3 is connected to the lower surface 17 of the tread plate 1 via the fixing portion 21 of the locking portion 2. The support body 3 has a substantially right triangle shape in side view, and includes an upper side portion 31 that extends in the front-rear direction along the lower surface 17 of the tread plate 1, an extending portion 32 that extends substantially orthogonally to the upper side portion 31 from the end portion on the one side surface 15 side of the upper side portion 31, and a reinforcing portion 33 that connects the upper side portion 31 and the extending portion 32. In the first embodiment, the upper side portion 31 and the extending portion 32 are formed of an L-shaped angle made of an aluminum alloy, and the reinforcing portion 33 is formed of a plate made of an aluminum alloy. The upper side portion 31, the extending portion 32, and the reinforcing portion 33 are connected to each other by welding.

[0034] The support body 3 is provided so that its posture can be changed between an upright posture substantially perpendicular to the lower surface 17 of the tread board 1 and a stored posture lying down on the lower surface 17 side by a rotation coupling member 34 attached to the upper side portion 31 and the fixing portion 21 of the locking portion 2. In the first embodiment, the rotation coupling member 34 is a flat hinge. The rotation coupling members 34 are attached at two locations, front and rear, on the upright surface portion 36 of the upper side portion 31. The support body 3 is rotatably connected to the locking portion 2 around the axis of the rotation coupling member 34. The support body 3 assumes an upright posture in which the extending portion 32 is substantially orthogonal to the lower surface 17 of the tread board 1 with the contact surface portion 37 of the upper side portion 31 in contact with the fixing portion 21 of the locking portion 2. Note that the number of rotation coupling members 34 for rotatably connecting the support body 3 to the locking portion 2 may be one or three or more. Also, the rotation coupling member 34 may be a hinge of another structure such as a flag hinge as long as it rotatably connects the support body 3 to the lower surface 17 of the tread board 1. Further, the rotation coupling member 34 is not limited to a so-called hinge. For example, it may be configured by inserting a rotation shaft member through shaft support members provided on the support body 3 and the lower surface 17 of the tread board 1, respectively, and connecting them.

[0035] In the first embodiment, the support body 3 in the upright posture is provided so that it can fall down toward the side opposite to the end surface portion 14 of the tread board 1. Note that the support body 3 may be provided so that it can fall down toward the end surface portion 14 side. In this case, it is preferable that the support body 3 is provided so as not to protrude outwardly to the left and right beyond the end surface portion 14 in the stored posture.

[0036] A contact member 35 that contacts the side surface of the tilting plate A when the loading platform work floor 100 is attached to the tilting plate A is provided at the tip of the extending portion 32 of the support body 3. In the first embodiment, the contact member 35 is formed of an adjuster screw with a swinging function. By adjusting the protruding length of the contact member 35 from the extending portion 32, the distance between the side surface of the tilting plate A and the support body 3 can be adjusted, and the attachment angle (levelness) of the tread board 1 with respect to the tilting plate A can be adjusted. Note that the contact member 35 may be formed of a cushioning material such as a rubber plate attached to the extending portion 32, or the extending portion 32 may be configured to directly contact the side surface of the tilting plate A.

[0037] [Locking mechanism] The loading platform working bed 100 is provided with a locking mechanism 4 for holding the support 3 in an upright position. In the first embodiment, a handle horizontal type downward pressing toggle clamp is provided as the locking mechanism 4. Two locking mechanisms 4 are provided for each support 3. Note that the locking mechanisms 4 may be provided one by one or three or more for each support 3.

[0038] As shown in FIG. 5, the locking mechanism 4 includes a base member 41 fixed to the fixing portion 21 of the locking portion 2, a rotating arm 42 rotatably connected to the base member 41, a link 43, and an operation lever 44 rotatably connected to the rotating arm 42 and the link 43 via a support shaft.

[0039] The base member 41 of the locking mechanism 4 is attached to the fixing portion 21 of the locking portion 2 on the side opposite to the rotating connector 34 with respect to the upper side portion 31 of the support 3 in the upright state. The rotating arm 42 extends from the base member 41 toward the support 3 side.

[0040] When the operation lever 44 is in a posture substantially parallel to the fixing portion 21, the pressing member 45 provided at the tip of the rotating arm 42 presses the contact surface portion 37 of the support 3 in the upright state toward the lower surface 17 of the tread plate 1 against the fixing portion 21 of the locking portion 2, and holds the support 3 in an upright state so that its posture cannot be changed. When the operation lever 44 is flipped up, the tip of the rotating arm 42 escapes and rotates in a direction away from the contact surface portion 37, and the support 3 becomes rotatable about the axis of the rotating connector 34.

[0041] In this way, when attaching the loading platform working bed 100 to the tilting plate A, by holding the support 3 in an upright position by the locking mechanism 4, the inclination (posture change) of the support 3 with respect to the tread plate 1 can be prevented and the safety can be improved. On the other hand, when storing or carrying the loading platform working bed 100, by setting the support 3 to a collapsed storage posture, the loading platform working bed 100 can be made compact for storage and the carrying workability is improved. Note that the locking mechanism 4 may be composed of a handle vertical type downward pressing toggle clamp.

[0042] In the first embodiment, the upper side portion 31, the extending portion 32, and the reinforcing portion 33 of the support 3 are made of an aluminum alloy, but these materials may be other metals such as steel materials, or may be hard plastics or the like. Further, the upper side portion 31 and the extending portion 32 are not limited to L-shaped angles, and may be formed of, for example, plate-like members, C-shaped or square pipe-shaped profiles, or solid square bars. Further, the reinforcing portion 33 may be an L-shaped, C-shaped, pipe-shaped profile, or solid bar.

[0043] Note that even if the upper side portion 31 of the support 3 is formed of a C-shaped or square pipe-shaped profile or a solid square bar, the locking mechanism 4 can hold the support 3 in the standing state in a non-posable posture by pressing the portion of the upper side portion 31 opposite to the tread plate 1 against the lower surface 17 of the tread plate 1.

[0044] Further, in the first embodiment, the fixing portion 21 of the locking portion 2 fixed to the lower surface 17 of the tread plate 1 is disposed from one side surface 15 to the other side surface 16 of the tread plate 1 and covers the cavity portion 18, and the locking mechanism 4 is attached to the lower surface 17 of the tread plate 1 via the fixing portion 21. Thereby, the tread plate 1 can be reinforced by the locking portion 2. Further, since the attachment position of the locking mechanism 4 is not limited to the lower surfaces of the side wall portion 12 and the reinforcing wall portion 13 constituting the lower surface 17 of the tread plate 1, and the locking mechanism 4 can be attached to the fixing portion 21 of the locking portion 2 at a desired position in the front-rear direction of the tread plate 1, the degree of freedom in the number and attachment position of the locking mechanism 4 is improved.

[0045] Further, the rotation coupling tool 34 that rotatably connects the support 3 to the tread plate 1 is attached to the lower surface 17 of the tread plate 1 via the fixing portion 21 of the locking portion 2. Therefore, since the attachment position of the rotation coupling tool 34 is not limited to the lower surface of the side wall portion 12 constituting the lower surface 17 of the tread plate 1, the degree of freedom in the size, number, and attachment position of the rotation coupling tool 34 is improved.

[0046] [Other Embodiments in the Loading Platform Working Floor] Next, with reference to FIGS. 6 and 7, a second embodiment of the loading platform work floor 100 will be described. FIG. 6(A) is a bottom view showing the central portion of the second embodiment omitted, and FIG. 6(B) is a right side view. FIG. 7 is a front view showing an enlarged main part of the second embodiment. In the description of the second embodiment, the same components as those of the first embodiment described so far are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0047] As shown in FIGS. 6 and 7, the locking mechanism 6 for holding the support 3 in an upright posture is constituted by a snap lock. The locking mechanism 6 includes a hook member 61 fixed to the contact surface portion 37 of the upper side portion 31 of the support 3, a base member 63 fixed to the fixing portion 21 of the locking portion 2 via a spacer member 62, an operation lever 64 rotatably connected to the base member 63, and a latching member 65 rotatably connected to the operation lever 64 and capable of being hooked on the hook member 61. In the present embodiment, the locking mechanism 6 is constituted by a snap lock with a spring, but it may be a snap lock in which no spring is provided on the latching member 65.

[0048] When the operation lever 64 is pushed down in a state where the latching member 65 is hooked on the hook member 61 fixed to the upper side portion 31 with respect to the support 3 in the upright posture, the locking mechanism 6 pulls the hook member 61 in a direction opposite to the posture change direction of the support 3 toward the storage posture side, thereby holding the support 3 in a non-rotatable upright posture. When the operation lever 64 is lifted and operated to disengage the latching member 65 from the hook member 61, the support 3 becomes rotatable about the axis of the rotation coupling 34.

[0049] In the second embodiment, the locking mechanism 6 is disposed from one side surface 15 to the other side surface 16 of the tread plate 1 and is attached to the fixing portion 21 of the locking portion 2 fixed to the lower surface 17 of the tread plate 1. Thereby, since the attachment location of the locking mechanism 6 is not limited to the lower surface of the side wall portion 12 constituting the lower surface 17 of the tread plate 1, the degree of freedom in the number and position of attachment of the locking mechanism 6 is improved.

[0050] By pulling the hook member 61 in a direction opposite to the direction of changing the posture of the support 3 toward the storage posture side, the locking mechanism 6 for holding the support 3 in the standing posture so as not to be rotatable is not limited to a snap lock, and for example, a hook-type toggle clamp or a toggle latch provided with a toggle mechanism may be used.

[0051] Further, the locking mechanisms 4 and 6 for holding the support 3 in the standing posture are not limited to toggle clamps, snap locks, etc., and for example, a cam latch handle rotatably provided around a rotating shaft attached to the fixing portion 21 of the locking portion 2, etc., having a locking member that can advance and retreat to a position on the opposite side of the tread plate 1 with respect to the upper side portion 31 of the support 3 in the standing posture may be used.

[0052] [Overview of the Third Embodiment] Next, with reference to FIGS. 8 to 15, as a third embodiment, an example of a construction and civil engineering equipment, a building panel member P, will be taken up, and a case where a rack working floor 200 (210, 220) is attached to a transport rack 250 for transporting the panel member P will be described.

[0053] First, with reference to FIGS. 8 and 9, the detailed structure of the transport rack 250 will be described. The transport rack 250 is for transporting various building panel members P (for example, outer wall panels, eaves panels, etc.) with different widths and thicknesses manufactured in a factory. In the transport rack 250 of the third embodiment, a bottom base frame 251 having a substantially rectangular frame shape in plan view, columns 252 erected at four corner portions of the bottom base frame 251, a plurality of front and rear horizontal frames 253 connecting the columns 252 adjacent to each other in the longitudinal (left - right) direction, and a plurality of left and right beam plates 254 connecting the columns 252 adjacent to each other in the short - hand (front - rear) direction constitute a box - frame - like framework.

[0054] The transport rack 250 of the third embodiment is made of metal such as steel or aluminum alloy. The bottom base frame 251, the columns 252, and the horizontal frames 253 are made of metal angle pipes. In the third embodiment, two horizontal frames 253 are arranged in the front-rear direction, and three beam plates 254 are arranged on each side in the left-right direction. The two horizontal frames 253 in the front-rear direction are arranged closer to the upper part between the columns 252 adjacent to each other in the longitudinal (left-right) direction. The left and right groups of beam plates 254 are arranged in parallel at appropriate intervals in the vertical direction between the columns 252 adjacent to each other in the short-side (front-rear) direction. Between a pair of bottom frames 255 that are long in the left-right direction of the bottom base frame 251, a plurality of bottom beams 256 extending in the short-side (front-rear) direction are arranged side by side at appropriate intervals in the longitudinal (left-right) direction of the bottom frame 255.

[0055] In the transport rack 250 of the third embodiment, it is possible to attach a vertically long auxiliary column 257 that supports the middle part of each horizontal frame 253 from below between each horizontal frame 253 and the bottom frame 255 located below it. As shown in detail in FIG. 10, the auxiliary column 257 has a vertically long angle pipe-shaped column body 258, an upward-opening gutter-shaped upper fitting part 259 fixed to the upper end part of the column body 258 by welding or the like, and a downward-opening gutter-shaped lower fitting part 260 fixed to the lower end part of the column body 258 by welding or the like. The auxiliary column 257 is also made of metal. By using the vertical deflection of each horizontal frame 253, the lower fitting part 260 of the auxiliary column 257 is fitted into the bottom frame 255 from below, and the upper fitting part 259 is fitted into the horizontal frame 253 from below, so that the auxiliary column 257 is detachably attached between each horizontal frame 253 and the bottom frame 255 below it.

[0056] [Rack working floor] Next, with reference to FIGS. 11 to 15, the detailed structure of the rack working floor 200 (210, 220) will be described. In the rack working floor 200 of the third embodiment, the components similar to those of the loading working floor 100 of the first or second embodiment described so far are denoted by the same reference numerals as those in the first or second embodiment, and the detailed description thereof will be basically omitted. Further, since the upper working floor 210 to be described later has a bilaterally symmetric structure, FIGS. 12 to 15 show the state of the right side portion of the upper working floor 210, and the illustration of the left side portion is omitted.

[0057] In the third embodiment, as the rack working floor 200 detachably attached to the transport rack 250, two types are adopted: an upper working floor 210 for each horizontal frame 253 and a lower working floor 220 for each bottom frame 255 (see FIG. 8). The upper working floor 210 has the same basic concept as the loading working floor 100, and is of a support body rotation type in which the left and right support bodies 3 can be changed in posture between an upright posture and a storage posture (see FIG. 11(A)). On the other hand, the lower working floor 220 is of a support body fixed type in which the left and right support bodies 3 are fixed to the tread plate 1 (see FIG. 11(B)). The lower working floor 220 is attached to the portion of the bottom frame 255 protruding from the loading platform among the transport racks 250 placed on the loading platform of a vehicle such as a truck to secure a workbench for the operator. Needless to say, a support body fixed type lower working floor 220 may be attached to the horizontal frame 253, or a support body rotation type upper working floor 210 may be attached to the bottom frame 255.

[0058] [Upper working floor] The upper working floor 210 of the third embodiment includes a tread plate 1 that serves as a work platform for the operator, a locking portion 2 for hooking the tread plate 1 onto the horizontal frame 253, and a support 3 that is connected to the left and right end portions of the lower surface of the tread plate 1 and supports the tread plate 1 in a substantially horizontal posture. The support 3 is provided so that its posture can be changed between a standing posture substantially perpendicular to the tread plate 1 (refer to the solid line state in FIG. 13) and a storage posture lying down on the lower surface side of the tread plate 1 (refer to the two-dot chain line state in FIG. 13). And the upper working floor 210 is provided with a locking mechanism 6 (snap lock or click lock) for holding the support 3 in the standing posture. As shown in FIG. 8, the upper working floor 210 holds the left and right supports 3 in the standing posture and is detachably attached to the horizontal frame 253 of the transport rack 250 for transporting various panel members P for construction, thereby being used as a work platform for the operator.

[0059] In the upper working floor 210, the tread plate 1 that serves as a work platform for the operator is composed of a footrest plate in the shape of a substantially rectangular plate in plan view made of a metal such as an aluminum alloy. A plurality of through holes 211 as anti-slip means are formed in the tread plate 1 at appropriate intervals. Note that, as the anti-slip means, not limited to forming a group of through holes 211 in the tread plate 1, a plurality of protrusions (ribs) may be formed. The locking portion 2 of the upper working floor 210 is made of a metal plate and is formed in a downward-opening U shape so as to fit onto the horizontal frame 253 from above. A plurality (three in the third embodiment) of the locking portions 2 of the upper working floor 210 are fixed by welding or the like so as to be arranged at appropriate intervals in the longitudinal (left and right) direction of the tread plate 1 at the back end face of the tread plate 1.

[0060] As shown in FIGS. 11(A), 12, and 15, the support 3 of the upper working floor 210 is formed in a substantially triangular shape in side view. An upper contact surface portion 212 that can overlap the lower surface of the tread plate 1 is bent toward the tread plate 1 at the upper part of the support 3. A support surface portion 213 that can contact the outer surface of the column 252 or the auxiliary column 257 of the transport rack 250 is bent toward the tread plate 1 at the back part of the support 3 (refer to the contact state in FIGS. 8 and 15).

[0061] As shown in FIGS. 13 and 14, the support 3 is configured to be able to change its posture between an upright posture substantially perpendicular to the lower surface of the tread 1 and a storage posture lying on the lower surface side of the tread 1 by a pivot connector 34 such as a hinge that connects the lower surface of the tread 1 and the upper contact surface portion 212 of the support 3. In the third embodiment, the pivot connectors 34 are attached at a plurality of locations (two locations in this case) before and after straddling the lower surface of the tread 1 and the upper contact surface portion 212 of the support 3. For this reason, the support 3 is connected to the left and right end portions of the lower surface of the tread 1 in a state where it can rotate around the axis of the pivot connector 34.

[0062] When the support 3 is rotated around the axis of the pivot connector 34 until the upper contact surface portion 212 overlaps the lower surface of the tread 1, the support 3 assumes an upright posture substantially orthogonal to the lower surface 17 of the tread 1. When the support 3 itself is rotated and tilted around the axis of the pivot connector 34 so as to overlap the lower surface of the tread 1, the support 3 assumes a storage posture lying on the lower surface side of the tread 1.

[0063] As shown in FIGS. 11(A), 12, and 13, a locking mechanism 6 for locking the support 3 in the upright posture so that its posture cannot be changed with respect to the tread 1 is attached to both the left and right side portions of the upper work floor 210. The locking mechanism 6 of the third embodiment is configured by a snap lock. In this case, the locking mechanism 6 (snap lock) has a substantially J-shaped locking fitting 214 fixed to the left and right end portions of the tread 1 and a lock body 215 fixed to the upper portion of the outer surface of the support 3. By hooking the engaging fitting at the upper portion of the lock body 215 on the substantially J-shaped locking fitting 214 with an upward opening and then turning back the lever of the lock body 215, the tread and the support are firmly and detachably connected, and the support 3 is held in the upright state so that its posture cannot be changed.

[0064] According to the above configuration, when attaching the upper work floor 210 to the horizontal frame 253 of the transport rack 250, the support 3 can be held in an upright position by the locking mechanism 6. Therefore, the inclination (posture change) of the support 3 with respect to the tread board 1 can be prevented, and the safety when an operator gets on the upper work floor can be improved. On the other hand, when storing or carrying the upper work floor 210, the support 3 is set to a collapsed storage posture, so that the upper work floor 210 can be stored compactly and the transport workability is improved.

[0065] As shown in detail in FIG. 15, the included angle θ formed by the tread board 1 and the support surface portion 213 of the support 3 in a side view is set to an obtuse angle. In this case, the included angle θ between the tread board 1 and the support surface portion 213 of the support 3 is preferably greater than 90° and less than or equal to 100° (90° < θ ≤ 100°). A more preferable included angle θ is greater than 90° and less than or equal to 95° (90° < θ ≤ 95°). And in a state where the upper work floor 210 is attached to the horizontal frame 253 of the transport rack 250, the tread board 1 is configured to incline obliquely downward toward the transport rack 250. Stated from the reverse perspective, in a state where the upper work floor 210 is attached to the horizontal frame 253 of the transport rack 250, the tread board 1 is configured to incline obliquely upward as it moves away from the outside of the horizontal frame 253.

[0066] With such a configuration, when an operator gets on the upper work floor 210 attached to the horizontal frame 253 of the transport rack 250 and performs operations such as hanging balls, the upper work floor 210 rather than the narrow horizontal frame 253 serves as a foothold for the operator, so the feet of the operator are stable and the workability can be improved. And the included angle θ formed by the tread plate 1 and the supporting surface portion 213 of the support 3 is set to an obtuse angle. In the state where the upper work floor 210 is attached to the horizontal frame 253, the tread plate 1 is configured to incline obliquely downward toward the transport rack 250. Therefore, it is easy to make the center of gravity position of the operator on the upper work floor 210 face the inner side of the transport rack 250 (the space side where various panel members P are accommodated). In other words, it is difficult to direct the center of gravity position of the operator on the upper work floor 210 in the direction away from the transport rack 250. For this reason, the operator can stably perform operations while avoiding the risk of falling from the upper work floor 210 as much as possible.

[0067] [Lower work floor] As shown in FIGS. 8 and 11(B), the lower work floor 220 of the third embodiment includes a tread plate 1 serving as a work platform for the operator, a locking portion 2 for hooking the tread plate 1 on the bottom frame 255, and a support 3 connected to the left and right end portions of the lower surface of the tread plate 1 to support the tread plate 1 in a substantially horizontal posture. As shown in FIG. 8, the lower work floor 220 is detachably attached to the bottom frame 255 of the transport rack 250 and is used as a work platform for the operator.

[0068] As described above, the lower work floor 220 is of the support-fixed type and has a symmetric structure similar to that of the upper work floor 210. The left and right supports 3 in the lower work floor 220 are fixed to the left and right side portions of the tread plate 1 by welding or the like. The locking portion 2 of the lower work floor 220 is made of a downward-opening U-shaped metal plate that fits into the bottom frame 255 from above. A plurality (three in the third embodiment) of the locking portions 2 of the lower work floor 220 are fixed by welding or the like at appropriate intervals in the longitudinal (left and right) direction of the tread plate 1 at the inner end face of the tread plate 1.

[0069] The pedal 1 is formed with a plurality of through holes 221 as anti-slip features at appropriate intervals. At the back of each support 3 on the lower working floor 220, a support surface portion 223 that can abut against the outer surface of the support column 252 or the bottom frame 255 of the transport rack 250 is bent and formed toward the pedal 1 side (see the abutting state in Fig. 8).

[0070] [An example of the working mode] The specific handling of the transport rack 250 is as follows, for example. That is, a plurality of panel members P taken out from the factory production line are vertically arranged and accommodated in the transport rack 250. Next, the transport rack 250 containing the group of panel members P is loaded onto the loading platform of a vehicle such as a truck and transported to the construction site. Then, the panel members P in the transport rack 250 on the loading platform are lifted one by one by a crane or the like installed at the construction site and attached to a predetermined location of the building at the construction site.

[0071] When lifting the panel member P in the transport rack 250, a wire is passed through a lifting jig such as an eyebolt attached to the panel member P, and a hooking operation of hooking the hook of a crane or the like to the wire is performed. At the construction site, it is often the case that the panel members P are lifted one by one while the transport rack 250 is placed on the loading platform of a vehicle such as a truck.

[0072] Therefore, the locking portions 2 of the upper working floor 210 are hooked from above on the cross frame 253 of the transport rack 250, and the support surface portions 213 of the left and right supports 3 are abutted against the outer surface of the corresponding support column 252 or auxiliary support column 257 of the transport rack 250, thereby attaching the upper working floor 210 to the cross frame 253 of the transport rack 250. Also, if necessary, the locking portions 2 of the lower working floor 220 are hooked from above on the bottom frame 255, and the support surface portions 213 of the left and right supports 3 are abutted against the outer surface of the corresponding support column 252 or the bottom frame 255 of the transport rack 250, thereby attaching the lower working floor 220 to the bottom frame 255 of the transport rack 250.

[0073] Then, an operator gets on the upper work floor 210 or the lower work floor 220, passes a wire through a suspension jig such as an eyebolt attached to the panel member P, and performs a hanging operation of hooking a hook of a crane or the like on the wire to lift the panel members P one by one. Therefore, by using the upper work floor 210 and the lower work floor 220 as footholds for the operator, the operator's feet can be stabilized and the work can be carried out safely.

[0074] As described above, the embodiments have been explained. However, the present invention is not limited to the above-described embodiments and can be embodied in various forms. The configuration of each part is not limited to the illustrated embodiments, and various changes can be made without departing from the spirit of the present invention. For example, the configurations described in the above-described embodiments and modification examples (such as the note writing) may be combined, and addition, omission, substitution, and other changes of the configuration are possible.

[0075] For example, the set of the locking part 2, the support 3, and the lock mechanism 4 is provided at two positions in the longitudinal direction of the tread plate 1 on the loading platform work floor 100 of each of the above embodiments, but may be provided at three or more positions. Further, for example, the locking part 2 and the support 3 may be integrally provided as in Patent Document 1 so that the locking part 2 also changes its posture as the posture of the support 3 changes.

[0076] Further, the rotation connector 34 and the lock mechanisms 4 and 6 may be directly attached to the lower surface of the side wall portion 12 constituting the lower surface 17 of the tread plate 1 without passing through the locking part 2. In this case, the fixing part 21 of the locking part 2 may not be provided, and the hooking part 22 may be fixed to one side surface 15 of the tread plate 1 or the support 3. As for construction and civil engineering materials and equipment, it goes without saying that various materials such as materials, supplies, and equipment may be adopted as long as they can be accommodated in the transport rack 250, not limited to the panel member P.

Explanation of reference numerals

[0077] 1 Pedal, 2 Locking portion, 3 Support body, 4, 6 Locking mechanism, 5 Reinforcing member, 11 Top plate portion, 12 Side wall portion, 13 Reinforcing wall portion, 14 End face portion, 15 One side face, 16 The other side face, 17 Bottom face, 18 Hollow portion, 21 Fixing portion, 22 Hanging portion, 23 Extended portion, 31 Upper side portion, 32 Extended portion, 33 Reinforcing portion, 34 Rotating connecting tool, 35 Contact member, 36 Upright face portion, 37 Contact face portion, 41 Base member, 42 Rotating arm, 43 Link, 44 Operating lever, 45 Pressing member, 61 Hook member, 62 Spacer member, 63 Base member, 64 Operating lever, 65 Latching member, 100 Loading platform working floor, 200 Rack working floor, 210 Upper working floor, 211 Through hole, 212 Upper contact face portion, 213 Support face portion, 214 Locking fitting, 215 Lock body, 220 Lower working floor, 221 Through hole, 223 Support face portion, 250 Transport rack, 251 Bottom base frame, 252 Support column, 253 Horizontal frame, 254 Beam plate, 255 Bottom frame, 256 Bottom beam, 257 Auxiliary support column, 258 Support column body, 259 Upper fitting portion, 260 Lower fitting portion, A Tilting plate, P Panel member

Claims

1. A work floor that can be detachably attached to a side plate provided on the bed of a vehicle or a horizontal frame of a transport rack that stores and transports multiple construction and civil engineering equipment and materials, The present invention comprises a step plate which serves as a foothold for a worker, a locking portion for hooking the step plate onto the gate plate, and a support body connected to the underside of the step plate and supporting the step plate in a substantially horizontal position, The support body is provided so as to be capable of changing its position between an upright position substantially perpendicular to the lower surface of the step board and a stored position in which the support body is laid down on the lower surface side of the step board, A locking mechanism is provided for holding the support in an upright position. Work floor.

2. The work floor according to claim 1, which is a work floor for a loading platform that can be detachably attached to a tailgate provided on a loading platform of a vehicle, The support body includes an upper side portion disposed along a lower surface of the tread, The locking mechanism includes a toggle clamp that presses the upper edge portion of the support body in the upright position against the underside of the tread, or a snap lock or toggle clamp that pulls a hook member fixed to the upper edge portion of the support body in the upright position in a direction opposite to the direction in which the support body is changed to the stored position. Working floor for cargo platform.

3. The engaging portion includes a fixing portion fixed to the underside of the tread and a hook portion extending downward from one end of the fixing portion, The support and the locking mechanism are attached to the fastening portion. A work floor for a cargo platform according to claim 2.

4. The hook portion is provided at an end of an extension portion of the fastening portion that extends outward beyond one side surface of the tread, A reinforcing member is provided which is fixed to the upper surface of the extension portion and one side surface of the footboard. A work floor for a cargo platform according to claim 3.

5. The work floor according to claim 1, which is a rack work floor that can be detachably attached to a horizontal frame of a transport rack that stores and transports a plurality of construction and civil engineering equipment and materials, The locking mechanism includes a snap lock that locks the support body in the upright position relative to the footboard so that the support body cannot be changed in position. Rack work platform.

6. The work floor according to claim 1, which is a rack work floor that can be detachably attached to a horizontal frame of a transport rack that stores and transports a plurality of construction and civil engineering equipment and materials, The support has a support surface portion that can come into contact with the outer surface of the support or auxiliary support that constitutes the transport rack, and the included angle between the footboard and the support surface portion of the support is set to an obtuse angle, and when attached to the horizontal frame of the transport rack, the footboard is configured to be inclined diagonally downward toward the transport rack. Rack work platform.

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