Conveyance device for scaffold

Abstract

To provide a conveyance device for a scaffold which can stably and safely convey a heavy article in a narrow space on a scaffold, has a simple structure, and is inexpensive.SOLUTION: A conveyance device for a scaffold includes a rail body 3 installed in a floor material 11 of a scaffold 1, and a carriage 4 traveling along the rail body 3, wherein the rail body 3 includes a long-sized foundation member 30 having a recessed groove 300 opened in the upper surface, a rail member 31 which is arranged in the recessed groove 300 of the foundation member 30 and has a long-sized guide part 310 projecting upward, and a spacer member 32 for positioning the rail member 31 in a width direction with respect to the foundation member 30, and an engagement groove 410 engageable with the guide part 310 of the rail member 31 is formed in a circumferential direction on the outer peripheral surface of a wheel 41 of the carriage 4.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a scaffolding transport device that includes a rail installed on a scaffolding and a cart that runs along the rail. [Background technology]

[0002] To transport heavy loads such as steel materials on scaffolding, it is common to use a cart with steel wheels attached to the four corners of the underside of the loading platform.

[0003] Such carts are equipped with free-wheeling rollers and can move in any direction, making stable transportation difficult and the carts may run away, making them very dangerous on narrow platforms. Furthermore, if the running direction on the platform is not stable, the cart and the transported goods will interfere with the chains and handrails that support the platform, making it difficult to use and creating safety problems.

[0004] In addition, weight will be added to the four wheels of the trolley. The scaffolding has a load-bearing capacity set for each support span, and depending on the posture of the cargo on the trolley and the position of the trolley, the load may be concentrated, raising concerns that the load-bearing capacity of the scaffolding may be jeopardized. Summary of the Invention [Problem to be solved by the invention]

[0005] The problem to be solved by the present invention is to provide a scaffolding transport device that can transport heavy loads stably and safely in narrow spaces on the scaffolding, has a simple structure, and is inexpensive. [Means for solving the problem]

[0006] Means 1 is a scaffolding transport device comprising a rail body installed on the floor material of the scaffolding and a cart that runs along the rail body, wherein the rail body comprises a long base member having a groove opening on its upper surface, a rail member that is placed in the groove of the base member and has a long guide portion that protrudes upward, and a spacer member that positions the rail member in the width direction relative to the base member, and wherein the outer peripheral surface of the wheels of the cart has an engagement groove formed along the circumferential direction that can engage with the guide portion of the rail member.

[0007] Means 2 is a scaffolding transport device as described in claim 1, characterized in that the rail body is not fixed to the floor material, and the base member, the rail member and the spacer member are not fixed to each other.

[0008] Means 3 is a scaffolding transport device as described in claim 2, characterized in that a board is placed on the floor material, the base member is placed on the board, and restraining members are installed on the board to sandwich both sides of the base member and are fixed to the board.

[0009] Means 4 is the scaffolding transport device according to claim 1, characterized in that one span of the base member is longer than twice the span between the supporting parts of the floor material.

[0010] Means 5 is a scaffolding transport device described in any one of claims 1 to 4, characterized in that the rail member, the base member is a channel steel, the rail member is an angle iron arranged with its cross-sectional outer corner facing upward, and the cross-sectional outer corner of the angle iron is the guide part.

[0011] Means 6 is a scaffolding transport device as described in claim 5, characterized in that a low step is formed at one end of the rail member, the difference in height between the upper surface of the rail member and the upper surface of the low step is equal to the thickness of the other end of the rail member, and the other end of the other rail member is overlapped on the upper surface of the low step of the rail member, so that the upper surfaces of the one end of the rail member and the other end of the other rail member are connected flush with each other. Effect of the Invention

[0012] According to the scaffolding transport device of the present invention, even when transporting heavy objects, the wheels of the cart run along the guide portions of the rail members, so the running track is stable and the cart does not interfere with the chains, handrails, etc. that support the scaffolding, making it safe to use. In addition, the weight of the cart and the weight of the transported object applied to the rail member are distributed to the bottom surface of the groove of the base member, thereby reducing concentrated load on the scaffolding. Even if the wheels of the trolley should come off the rail member, they will fall into the grooves in the foundation member, preventing any significant deviation in the running trajectory of the trolley. Also, the load from the wheels is received by the grooves in the foundation member, reducing the concentrated load on the scaffolding, thereby improving safety.

[0013] In addition, by not fixing the rail body to the scaffolding, and by not fixing the base member, rail member and spacer member to each other, the rail body can be easily installed, assembled and removed, and can be easily moved to the next scaffolding to be used.

[0014] In addition, by placing a board on the floor material of the scaffolding, placing a foundation member on the board, and placing restraining members on the board between both sides of the foundation member and fixing the restraining members to the board, the rail body can be prevented from shifting in the width direction even if it is not fixed to the scaffolding.

[0015] In addition, if one span of the foundation member is made longer than twice the span between the support parts of the scaffolding floor material, the foundation member will be supported by the support parts of the scaffolding regardless of where the foundation member is placed in the longitudinal direction, preventing the floor material from falling out and allowing it to be placed without worrying about the load-bearing capacity of the floor material.

[0016] In addition, if the foundation member is a channel steel and the rail member is an angle bar arranged with its cross-sectional outer corner facing upward, and the cross-sectional outer corner of the angle bar is a guide part, then prefabricated members can be used as the foundation member and rail member, which reduces costs.

[0017] In addition, by forming a low step at one end of the rail member, making the difference in height between the top surface of the rail member and the top surface of the low step equal to the thickness of the other end of the rail member, and overlapping the other end of the other rail member on the top surface of the low step of the rail member, and connecting one end of the rail member and the other end of the other rail member so that their top surfaces are flush, the top surface of the connecting part of the rail members is smooth and the connecting part of the rail members is less likely to shift, allowing the trolley to run smoothly. [Brief description of the drawings]

[0018] [Figure 1] FIG. 2 is a front view of the scaffolding according to the embodiment. [Diagram 2] FIG. 2 is a side view of the scaffolding according to the embodiment. [Diagram 3] FIG. 2 is a schematic front view of a scaffolding transport device showing an embodiment, with a partial enlarged view of one side. [Figure 4] 4(a) is a plan view of the dolly according to the embodiment, and FIG. 4(b) is a side view of the dolly according to the embodiment. [Diagram 5] FIG. 2 is a cross-sectional view of a rail body according to the embodiment. [Figure 6] FIG. 4 is a side view of the rail member and the spacer member according to the embodiment. [Figure 7] 4 is a cross-sectional view of a connection portion of the rail member according to the embodiment. FIG. [Figure 8] 1 is a side view showing the relationship between the support portion of the floor material of the scaffolding according to the embodiment and the base member. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It goes without saying that the present invention is not limited to the embodiments.

[0020] Figure 1 is a front view of the scaffolding (front view of pier B), Figure 2 is a side view of the scaffolding (side view of pier B), Figure 3 is a schematic front view of a scaffolding transport device with an enlarged view of one side (part X in Figure 2), Figure 4 shows a trolley, Figure 4(a) is a plan view, Figure 4(b) is a side view, Figure 5 is a cross-sectional view (horizontal cross-sectional view) of the rail body, Figure 6 is a side view of the rail member and spacer member, Figure 7 is a cross-sectional view (longitudinal cross-sectional view) of the connection part of the rail member, and Figure 8 is a side view showing the relationship between the support part of the scaffolding floor material and the foundation member.

[0021] This embodiment relates to a scaffolding transport device that is applied to a suspended scaffolding that is provided on a road bridge that has parallel upper and lower lanes.

[0022] As shown in Figures 1 and 2, bridge A in the upbound and downbound lanes has piers B and supports C, respectively.

[0023] As shown in Figures 1 and 2, scaffolding 1 is installed along the top of pier B so as to be perpendicular to bridge A. Scaffolding 1 is installed on both sides of pier B (on both the left and right banks of the river when bridge A crosses a river) (Figure 2).

[0024] The scaffolding 1, which is a suspended scaffolding, comprises a support material 10, a floor material 11, a suspension material 12, a mounting material 13, and a handrail 14.

[0025] The support material 10 supports the floor material 11, and is composed of, for example, truss-shaped structural members such as deck supports assembled into a frame shape in plan view.

[0026] The floor material 11 is a portion that becomes the working floor of the scaffolding 1, and is supported over a predetermined span by the support material 10. The floor material is made of a flat structural material such as a wood deck panel, for example.

[0027] 2, the suspending member 12 suspends the supporting member 10 from the bridge A via the mounting member 13, and is composed of, for example, a chain. The upper end of the suspending member 12 is connected to the mounting member 13, and the lower end is connected to the supporting member 10.

[0028] The mounting material 13 is a member for attaching the hanging material 12 to the bridge A, and is fixed to the bridge A and has the upper end of the hanging material 12 connected thereto.

[0029] The handrail 14 is made of, for example, a single pipe, and is erected from the support material 10.

[0030] A fall prevention fence 15 is provided below the side of the scaffolding 1. Although not shown, the fall prevention fence 15 is supported by the bridge A and the pier B.

[0031] When working using scaffolding 1, work (e.g., replacing a support) is carried out using scaffolding 1 on one side (e.g., the uphill lane side) and then work (e.g., replacing a support) is carried out using scaffolding 1 on the other side (e.g., the downhill lane side).

[0032] A scaffolding transport device 2 for transporting materials such as supports is disposed on the scaffolding 1 where work is carried out. FIG. 2 shows a state in which a scaffold transport device 2 is arranged on a scaffold 1 where work is to be performed.

[0033] As shown in FIGS. 2 and 3, the scaffolding transport device 2 includes a rail body 3 that is installed on the scaffolding 1, and a cart 4 that runs along the rail body 3.

[0034] As shown in Figure 2, a pair of rail bodies 3 are installed on the floor material 11 of the scaffolding 1 along the longitudinal direction of the scaffolding 1 (in the case where bridge A crosses a river, the upstream and downstream directions of the river) in accordance with the spacing between the wheels 41 provided on both sides of the cart 4.

[0035] As shown in FIGS. 3 and 4, the dolly 4 has a loading platform 40 and steel wheels 41 attached to the four corners of the underside of the loading platform 40.

[0036] As shown in FIG. 4(a), the platform 40 of the dolly 4 is configured in a lattice shape, but a plate-like material may be provided on top to make the top surface of the platform flat.

[0037] An engagement groove 410 having a triangular cross section is formed in the outer circumferential surface of the wheel 41 along the circumferential direction (FIG. 3).

[0038] Figure 3 shows one of a pair of rail bodies 3 and a wheel 41 on one side of a carriage 4 moving on the rail body 3, while the other rail body 3 and the carriage 4 on the other side are omitted from the illustration.

[0039] A stay portion 42 is provided which protrudes downward from the underside of the loading platform 40, and the wheels 41 are rotatably supported by shafts 43 provided on the stay portion 42.

[0040] As shown in FIGS. 3 and 5, the rail body 3 includes a base member 30, a rail member 31 and a spacer member 32.

[0041] The base member 30 is a long member having a recessed groove 300, and in this embodiment is a channel steel.

[0042] As shown in FIG. 3, the foundation member 30 is placed on the upper surface of a board 33, such as a scaffolding board, which is wider than the foundation member 30 and is laid on the floor material 11, so that the upper surface of the groove 300 is open.

[0043] Holding members 34, each made of a batten or the like, are placed on the plate material 33 on both sides of the foundation member 30, and the holding members 34 are fixed to the floor material 11 via the plate material 33 with nails 35 or the like. It is also possible to fasten the nails 35 etc. only up to the board 33 and not reach the floor material 11, so that the movement of the board 33 relative to the floor material 11 is resisted by frictional force.

[0044] The base member 30 is not fixed to the floor material 11 and the board material 33, but is merely fitted between the retaining members 34 (it can be removed upwards), but since it is sandwiched between the retaining members 34 on both sides, it does not move in the width direction. Also, the base member 30 resists longitudinal movement by the frictional force caused by its weight.

[0045] As shown in Figs. 3 and 5, the rail member 31 is a member having a long guide portion 310 that protrudes upward, and is an angle member in this embodiment.

[0046] The rail member 31 is disposed in the recessed groove 300 of the base member 30 so that the outer corner of the cross section faces upward, and this outer corner serves as a guide portion 310. The guide portion 310 engages with an engagement groove 410 formed in the wheel 41 of the dolly 4, and guides the running direction of the wheel 41 (FIG. 5).

[0047] 6, a rail joint member 311, whose outer shape is approximately the same as the inner shape of the rail member, is attached to the underside of one end of the rail member 31 so as to protrude from one end face of the rail member 31, and a low step portion 312 is formed on the upper surface of the protruding part of the rail joint member 311. In other words, the difference in height between the upper surface of the rail member 31 and the upper surface of the low step portion 312 is formed so as to be equal to the thickness of the rail member 31.

[0048] As shown in Figure 7, the other end of another rail member 31 is overlapped on the upper surface of the lower stage portion 312 of the rail member 31, and the one end of the rail member 31 and the other end of the other rail member 31 are connected so that their upper surfaces are flush with each other.

[0049] Therefore, the connecting portion of the rail members 31 is less likely to slip than in a connection structure in which the rail members are simply butted together, and the upper surface is smooth and free of irregularities.

[0050] It is preferable that the connection portion of the rail member 31 and the connection portion of the base member 30 are not aligned with each other, but are shifted in the axial direction.

[0051] As shown in Figs. 3 and 5, the spacer member 32 is a short member having a groove 321 with an open upper end, and has protruding pieces 320 on both outer sides thereof, which extend from the upper end to the lower end.

[0052] The width between the outer ends of the protruding pieces 320 on both sides is slightly narrower than the width of the groove 300 in the base member 30 (in this embodiment, it is designed to engage and lock into the innermost haunch portion 300a of the groove 300, but it may also be designed to simply fit into place).

[0053] The width of the groove 321 of the spacer member 32 is approximately the same as the width of the rail member 31 so that the rail member 31 is positioned relative to the spacer member 32. The groove 321 of the spacer member 32 and the rail member 31 may be engaged and locked.

[0054] The spacer members 32 are arranged at appropriate intervals in the longitudinal direction of the base member 30 and the rail member 31 (Figure 6), and are interposed between the inner surface of the groove 300 of the base member 30 and the bottom of the rail member 31, thereby positioning the rail member 31 relative to the base member 30 and fixing it so that it does not move in the width direction.

[0055] The base member 30 , rail member 31 and spacer member 32 are not fixed to one another. The spacer member 32 is fitted inside the recessed groove 300 of the base member 30 , and the rail member 31 is fitted inside the spacer member 32 .

[0056] In this way, the rail body 3 is not fixed to the scaffolding 1, and the base member 30, rail member 31 and spacer member 32 are not fixed to each other either. Therefore, when transportation using the scaffolding transport device 2 installed on the scaffolding 1 where work will be performed in advance (for example, the scaffolding 1 installed in the uphill lane section) is completed, the rail body 3 can be removed and easily installed on the scaffolding 1 where work will be performed next (for example, the scaffolding 1 installed in the downhill lane section).

[0057] As shown in Figure 8, one span L1 of the foundation member 30 (the length of one foundation member 30 that is not connected in the axial direction) is longer than the support span L2 between the support portions 10a provided in the longitudinal direction of the foundation member 30 of the support material 10 of the floor material 11 of the scaffolding 1, and in this embodiment, is more than twice the support span L2.

[0058] In this way, if the length L1 of one span of the foundation member 30 is made at least twice the length L2 of the support span between the support parts 10a provided in the longitudinal direction of the foundation member 30 of the supporting material 10 of the floor material 11 of the scaffolding 1, then regardless of where the foundation member 30 is placed in the longitudinal direction, the foundation member 30 will be supported by the support parts 10a of the supporting material 10 of the floor material 11 of the scaffolding 1, so that the floor material 11 can be prevented from coming loose and the floor material 11 can be placed without worrying about its load-bearing capacity.

[0059] The rail body 3 is assembled and placed on the floor material 11 of the scaffolding 1 to be used for work, and the two wheels 41 attached to one side of the cart 4 are placed on one of the rail bodies 3, and the two wheels 41 attached to the opposite side are placed on the other rail body 3. The engagement grooves 410 of the wheels 41 engage with the guide parts 310 of the rail body 3, allowing the cart 4 to run on a stable track along the rail member 31.

[0060] To remove the scaffolding transport device 2, the dolly 4 is removed from the rail body 3, and the rail body 3 is disassembled into its components, which are then moved to another work location as necessary.

[0061] The weight of the objects to be transported on the cart 4 and the platform 40 is applied to the rail member 31, but the load applied to the rail member 31 is dispersed to the bottom surface of the recessed groove 300 of the base member 30. Furthermore, if a plate material 33 is further provided, the load is also dispersed by the plate material 33 and received by the floor material 11, so the load is not concentrated too much at one point.

[0062] Furthermore, even if the wheel 41 comes off the guide portion 310 of the rail member 31, it falls into the recessed groove 300 of the base member 30, so there is no risk of the wheel coming off the rail body 3 and the running trajectory being significantly deviated.

[0063] [Other Modifications] The present invention is not limited to the above-mentioned embodiment, and may also include the following, for example.

[0064] In this embodiment, the transport device is arranged on a suspended scaffolding that is suspended below a bridge, but the present invention is not limited to this. For example, the transport device may be arranged on a scaffolding for work other than a bridge, or may be a scaffolding that is supported from below, such as the ground, instead of a suspended scaffolding.

[0065] In this embodiment, a channel steel is used as the foundation member, but it may be another long member having a recessed groove, such as a lip channel steel.

[0066] In this embodiment, an angle bar is used as the rail member, and the outer corner of the angle bar is used as the guide part, but the flange of the angle bar can also be raised and placed in a groove in the base member, with the upper end of the flange used as the guide part.

[0067] In this embodiment, the cross section of the engagement groove formed on the outer circumferential surface of the wheel is triangular, but this can be modified as appropriate according to the shape of the guide portion.

[0068] In this embodiment, the rail body 3 is disposed on the floor material 11 via the plate material 33, but this is not limited thereto, and the plate material 33 may be omitted and the rail body 3 may be disposed directly on the floor material 11. In this case, when the holding down member 34 is used, the holding down member 34 may be fixed to the floor material 11. Also, the holding down member 34 does not have to be used.

[0069] Each technical aspect of any embodiment, including modified examples, may be combined with other embodiments and applied to form examples. [Explanation of symbols]

[0070] 1 Scaffolding 10 Support material 10a Support part 11 Flooring 12 Hanging material 13 Mounting material 14 Handrails 15 Fall prevention fence 2 Scaffolding transport device 3 Rail body 30 Foundation members 300 Groove 31 Rail parts 310 Guide part 311 Rail joint parts 312 Low section 32 Spacer member 320 Projection piece 321 Groove 33 Board material 34 Retaining member 35 nails 4 Carts 40 Cargo Bed 41 wheels 410 Engagement groove 42 Stay Club 43 Axis A Bridge B Pier C bearing

Claims

1. A scaffolding transport device comprising a rail body installed on a floor material of the scaffolding and a cart running along the rail body, the rail body comprises: a long base member having a groove that opens to an upper surface; a rail member that is disposed in the groove of the base member and has a long guide portion that protrudes upward; and a spacer member that positions the rail member in a width direction relative to the base member; An engagement groove capable of engaging with the guide portion of the rail member is formed along the circumferential direction on the outer peripheral surface of the wheel of the dolly. A scaffolding transport device characterized by:

2. 2. The scaffolding transport device according to claim 1, wherein the rail body is not fixed to the floor material, and the base member, the rail member and the spacer member are not fixed to each other.

3. A scaffolding transport device as described in claim 2, characterized in that a board is placed on the floor material, the base member is placed on the board, and restraining members are installed on the board on both sides of the base member and fixed to the board.

4. 2. The scaffolding transport device according to claim 1, wherein one span of the base member is longer than twice the span between the support portions of the floor material.

5. A scaffolding transport device as described in any one of claims 1 to 4, characterized in that the base member is a channel steel, the rail member is an angle iron arranged with its cross-sectional outer corner facing upward, and the cross-sectional outer corner of the angle iron is the guide portion.

6. The scaffolding transport device described in claim 5, characterized in that a low step is formed at one end of the rail member, the difference in height between the upper surface of the rail member and the upper surface of the low step is equal to the thickness of the other end of the rail member, and the other end of the other rail member is overlapped on the upper surface of the low step of the rail member, so that the upper surfaces of the one end of the rail member and the other end of the other rail member are connected flush with each other.

Images