Unloading equipment

Abstract

To provide an unloading device that can stably transport materials to a high place without swaying back and forth from side to side, even when materials necessary to assemble scaffolding are placed on it, and to prevent materials, etc. falling outside the scaffolding even if the materials, etc. being transported fall.SOLUTION: An unloading device 2 comprises: a suspension fixture 10 with an engagement plate 11 that engages a suspension portion 3 of a lifting mechanism, and a plurality of L-shaped members 12 that are attached to the engagement plate 11 and place a fastening portion of a post 91; a pair of elevating bodies 20 that are raised and lowered along a pair of guide pipes 81, 82 arranged at intervals; a pair of elevating body fixing boxes 30, 40 that fix each of the pair of elevating bodies 20; a shackle 14 that connects the suspension fixture 10 and the pair of elevating body fixing boxes 30, 40; and a lifting frame 70 that holds the pair of lifting body fixing boxes 30, 40 so that the pair of lifting bodies 20 remain horizontal and are raised and lowered along the pair of guide pipes 81, 82.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a lifting device for transporting materials used to erect scaffolding to a height. [Background technology]

[0002] Various types of scaffolding are used in construction work, and the materials used for the scaffolding are steel pipes, etc. When assembling the scaffolding, various pipes, etc. are combined from the bottom up to assemble the scaffolding to the specified height. In order to assemble mid- to high-rise scaffolding, the pipes and other materials used must be transported to high altitudes. This often involves the use of lifting devices that suspend the materials and raise and lower them using winches, or lifting devices that raise and lower a platform loaded with the materials along vertical rod-shaped members such as guide rails. Various lifting devices and lifting devices have been proposed to efficiently transport as much material as possible at one time.

[0003] For example, Patent Document 1 (JP 2019-206436 A) discloses a lifting device for lifting a rod-shaped member having a protruding portion on its periphery that protrudes outward, the lifting device comprising: an engaging member that engages with the lifting portion of a lifting mechanism; a vertical member extending in a first horizontal direction (left-right direction); and a plurality of horizontal members extending in a second horizontal direction (front-back direction) perpendicular to the first horizontal direction, the engaging member being attached to the vertical member or the horizontal member, the central portion of the horizontal member in the second horizontal direction being attached to the vertical member, the spacing between the horizontal members in the first horizontal direction being greater than the width of the rod-shaped member in a direction perpendicular to the axial direction and smaller than the outer width of the protruding portion in the direction perpendicular to the axial direction, and the lifting device having vertically erected portions formed at both ends of the horizontal member in the second horizontal direction. However, when the materials (rod-shaped components such as posts) required to assemble scaffolding using the lifting device of Patent Document 1 are lifted and transported by a lifting machine such as a winch, if the lifting device carrying the materials sways back and forth or left and right due to wind or other factors, there is a risk that the materials on the lifting device will collide with the posts, handrails, etc. of surrounding scaffolding that has already been assembled and fall.

[0004] Furthermore, Patent Document 2 (JP 2010-281072 A) discloses a scaffolding work lift that includes scaffolding whose framework is formed by scaffolding pipes, a platform lifting space that is opened vertically in part of the scaffolding, a pair of guide rails that are fixed to the scaffolding pipes on both sides of the platform lifting space and installed vertically, a cage-shaped platform placed in the platform lifting space, guide rollers that are provided on both sides of the platform and rotate to run on the pair of guide rails and regulate the horizontal position of the platform, a chain block that is installed at the top of the platform lifting space and winds up a chain fixed to the top of the platform, and a lift fall safety device that activates to stop the platform when the platform falls at a speed greater than a predetermined speed. However, the scaffolding work lift in Patent Document 2 requires space in part of the scaffolding for raising and lowering the platform, and because a basket-shaped platform loaded with materials used to assemble the scaffolding is raised and lowered along guide rails fixed to the scaffolding, not only is a large, heavy basket-shaped platform required, making the device bulky, but the front half of the platform protrudes outward from the scaffolding, so there is a risk that the materials loaded on the platform may fall, or if the platform with materials loaded on it falls, it may injure workers and others outside the scaffolding.

[0005] Furthermore, Patent Document 3 (JP 2021-67065 A) discloses a hoisting device comprising an adjustable box that rises and falls along a vertical rod-shaped member with a circular cross-section, and a material transport body connected to the adjustable box, wherein the adjustable box comprises a lifting body that rises and falls on the circumferential surface of the vertical rod-shaped member, and a fall prevention mechanism that prevents the material transport body from falling, and the fall prevention mechanism comprises an engaging portion that engages with a lifting member of a lifting device that hoists the adjustable box, a locking member that is pressed against the circumferential surface of the vertical rod-shaped member so as to clamp the circumferential surface when the lifting of the lifting member is released, a biasing member that tilts the locking member to press the locking member against the circumferential surface of the vertical rod-shaped member, and a guide member that guides the locking member to tilt. However, although the lifting device of Patent Document 3 does not require space for raising and lowering the loading platform on part of the scaffolding like the scaffolding work lift of Patent Document 2, it has the same problem as Patent Document 2, namely, because the material carrier loaded with materials used to assemble the scaffolding is raised and lowered along pipes fixed to the scaffolding, not only does it require a large, box-shaped, heavy material carrier, making the device bulky, but also because the entire material carrier protrudes outward from the scaffolding, there is a high risk of materials loaded on the material carrier falling, or if the material carrier loaded with materials falls, there is a high risk of injury to workers and others outside the scaffolding. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2019-206436 [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-281072 [Patent Document 3] Patent Publication No. 2021-67065 Summary of the Invention [Problem to be solved by the invention]

[0007] The problem that this invention aims to solve is to provide a device that does not use a large, box-shaped heavy body, does not require a large-scale device, and can stably transport materials required for assembling scaffolding to a high place without swaying left and right, front and back, and reduces the risk of materials falling, and even if materials being transported fall, prevents them from falling outside the scaffolding, minimizing the risk of injury to workers, etc.

[0008] The invention of claim 1 solves the above-mentioned problem by providing a lifting device that uses a lifting mechanism to transport rod-shaped materials that have protruding portions on their periphery, the lifting device comprising: a lifting tool having an engaging member that engages with the lifting portion of the lifting mechanism and a plurality of rod-shaped material placing members attached to the engaging member and on which the protruding portions of the rod-shaped materials are placed; a pair of lifting bodies that rise and fall along a pair of vertical rod-shaped members arranged at a distance from each other; a pair of lifting body fixing members that fix each of the pair of lifting bodies; a connecting tool that connects the lifting tool to the pair of lifting body fixing members; and a lifting frame that holds the pair of lifting body fixing members so that the pair of lifting bodies rise and fall along the pair of vertical rod-shaped members while maintaining horizontality.

[0009] The invention of claim 2 solves the above problem by providing a lifting device in which the lifting frame comprises a pair of vertical frames fixed to the pair of lifting body fixing members and a horizontal frame suspended across the pair of vertical frames.

[0010] The invention of claim 3 solves the above-mentioned problem by providing a lifting device that uses a lifting mechanism to transport rod-shaped materials having protruding portions on their periphery that protrude outward, comprising an engaging member that engages with the lifting portion of the lifting mechanism, a pair of lifting bodies that rise and fall along a pair of vertical rod-shaped members arranged at a distance, a pair of lifting body fixing members that fix each of the pair of lifting bodies, a connecting device that connects the engaging members to the pair of lifting body fixing members, a lifting frame that holds the pair of lifting body fixing members so that the pair of lifting bodies rise and fall along the pair of vertical rod-shaped members while maintaining horizontality, and a lifting tool that is attached to the lifting frame and has a plurality of rod-shaped material placing members on which the protruding portions of the rod-shaped materials are placed.

[0011] The invention of claim 4 solves the above problem by providing a lifting device in which the lifting frame has a pair of vertical frames fixed to the pair of lifting body fixing members, and the hoisting device is fixed to the pair of vertical frames.

[0012] The invention of claim 5 solves the above problem by providing a lifting device in which the rod-shaped material is a support used in wedge-tightened scaffolding, the protrusion is a fastening part attached to the support, and the rod-shaped material placing member is an L-shaped member arranged at a distance wider than the outer diameter of the support.

[0013] The invention of claim 6 solves the above problem by providing a lifting device in which the hoisting tool is equipped with a plate-shaped material hooking member for hooking a plate-shaped material. [Effects of the Invention]

[0014] In the lifting device of the invention described in claim 1, the protruding portions of rod-shaped materials can be placed on the multiple rod-shaped material placing members of the lifting device, so no large, box-shaped heavy body is used and the device does not become large-scale. The pair of lifting body fixing members that secure the pair of lifting bodies that rise and fall along the pair of vertical rod-shaped members are connected to the lifting device with a connector, so even if the materials needed to assemble the scaffolding are placed on the lifting device, the materials can be transported stably to a high place without swaying left and right, front and back, and there is little risk of the materials falling. The pair of lifting body fixing members are held by the lifting frame so that the pair of lifting bodies remain horizontal and rise and fall along the pair of vertical rod-shaped members. Therefore, even when materials are placed on the lifting device and lifted, they rise smoothly with a balanced left and right state. The materials placed on the lifting device do not protrude forward, and even if the materials being transported fall, they will not fall outside the scaffolding, minimizing the risk of injury to workers, etc.

[0015] In the lifting device of the invention described in claim 2, the lifting frame further comprises a pair of vertical and horizontal frames, which has the effect of allowing the pair of lifting bodies to rise and fall along the pair of vertical rod-shaped members while remaining horizontal with a simple structure.

[0016] In the lifting device of the invention described in claim 3, the protruding portions of rod-shaped materials can be placed on the multiple rod-shaped material placing members of the lifting device, so no large, box-shaped heavy body is used and the device does not become bulky. The lifting device is attached to a lifting frame that holds a pair of lifting body fixing members that fix a pair of lifting bodies that rise and fall along a pair of vertical rod-shaped members. Therefore, even if materials necessary to assemble the scaffolding are placed on the lifting device, the materials can be stably transported to a high place without swaying left and right, front and back, and there is little risk of the materials falling. Since the pair of lifting body fixing members are held on the lifting frame so that the pair of lifting bodies remain horizontal and rise and fall along the pair of vertical rod-shaped members, even when materials are placed on the lifting device and lifted, they rise smoothly with a balanced left and right state. The materials placed on the lifting device do not protrude forward. Even if the materials being transported fall, they will not fall outside the scaffolding, minimizing the risk of injury to workers, etc.

[0017] In the lifting device of the invention described in claim 4, the hoisting device is further fixed to a pair of vertical frames provided on the lifting frame, which has the effect of completely preventing the hoisting device from swaying left and right and front and back.

[0018] In the lifting device of the invention described in claim 5, since the rod-shaped material placing member is an L-shaped member, it is possible to prevent the support of the rod-shaped material from slipping off the rod-shaped material placing member and falling.

[0019] The lifting device of the invention as set forth in claim 6 further has the effect of being able to transport plate-shaped materials using the plate-shaped material hooking members. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a perspective view showing the configuration of a lifting device according to the first invention (invention related to claim 1) and the entire lifting system including this lifting device. [Figure 2] FIG. 2 is a plan view of the lifting system of FIG. 1. [Figure 3] FIG. 2 is a front view of the lifting system of FIG. 1. [Figure 4] FIG. 2 is a right side view of the lifting system of FIG. 1. [Figure 5] FIG. 2 is a left side view of the shackle 14. [Figure 6] 2A and 2B are a plan view, a rear view, a right side view, and a cross-sectional view taken along the line XX of the lifting body 20. [Figure 7] 1A to 1C are a plan view, a front view, a rear view, a left side view, and a right side view of the state in which the lifting body 20 and the clamp 50 are attached to the lifting body fixing box 30. [Figure 8] 1A and 1B are a perspective view and a plan view of the vertical frame of the lifting frame 70, and a perspective view of the horizontal frame of the lifting frame 70. [Figure 9] FIG. 1 is a perspective view of a long support pole used in a wedge-tight scaffolding, and a perspective view of a tread used in the scaffolding. [Figure 10] 1 is a perspective view showing a state in which a support 91 and a tread 100 are placed on a hoisting tool 10 of a hoisting device 2 and transported. [Figure 11] FIG. 1 is a perspective view showing the configuration of a lifting device according to a second invention (invention according to claim 3) and the entire lifting system including this lifting device. [Figure 12] FIG. 12 is a plan view of the lifting system of FIG. 11. [Figure 13] FIG. 12 is a front view of the lifting system of FIG. 11. [Figure 14] FIG. 12 is a rear view of the lifting system of FIG. 11. [Figure 15] FIG. 12 is a right side view of the lifting system of FIG. 11. [Figure 16] 1 is a perspective view showing the state in which a support and a tread are placed on the hoisting devices 20, 30 of the hoisting device 102 and transported. DETAILED DESCRIPTION OF THE INVENTION

[0021] [Overall configuration of the lifting device of the first invention] Figure 1 is an oblique view showing the lifting device of the first invention (invention related to claim 1) and the overall configuration of the lifting system including this lifting device, Figure 2 is a plan view of the lifting system of Figure 1, Figure 3 is a front view of the lifting system of Figure 1, and Figure 4 is a right side view of the lifting system of Figure 1. In the drawings, 1 is a lifting system, 2 is a lifting device, 3 is a hook portion of the lifting device, 10 is a lifting tool, 11 is an engagement plate, 11a and 11b are holes, 11c and 11d are windows, 11e is a hanging piece, 12 is an L-shaped member, 12a is a horizontal portion, 12b is a vertical portion, 13 is an inverted L-shaped member, 13a is a horizontal portion, 13b is an inclined portion, 14 is a shackle, 20 is a lifting body, 30 and 40 are lifting body fixing boxes, 50 and 60 are clamps, 70 is a lifting frame, 71 is a vertical frame, 75 is a horizontal frame, 81 and 82 are guide pipes, and in each drawing, X is the left-right direction, Y is the front-back direction, and Z is the up-down direction. As shown in the figure, the lifting system 1 is composed of a lifting device 2, a lifting device equipped with a hook portion 3, and guide pipes 81 and 82 that guide the lifting device 2 as it rises and falls, and the hook portion 3 is the lifting portion of the lifting mechanism in this first invention. The lifting device 2 is composed of a sling 10, a shackle 14, a lifting body 20, lifting body fixing boxes 30, 40, clamps 50, 60, and a lifting frame 70.

[0022] [10 lifting devices, 14 shackles] The lifting device 10 is composed of an approximately pentagonal engaging plate 11, which serves as the engaging member of the first invention, an L-shaped member 12, and an inverted L-shaped member 13, which serves as the plate-shaped material hooking member of the present invention, and these components are made of metal materials such as iron and aluminum, fiber-reinforced plastic, etc. In the sling 10, the engagement plate 11 is approximately pentagonal, with a hole 11a at the top center, holes 11b at the left and right ends, windows 11c and 11d on the left and right, and hanging pieces 11e at the bottom center and the bottom left and right. In the engagement plate 11, eight L-shaped members 12 are attached to the underside of each of the left and right window sections 11c and 11d, spaced at equal intervals in the X direction, and an inverted L-shaped member 13 is attached to the lower end of the hanging piece 11e. The L-shaped member 12 consists of a horizontal portion 12a and a vertical portion 12b, the distance between which is slightly wider than the outer diameter of the support (described later) used in wedge-tightening scaffolding, and the fastening portion protruding from the periphery of the support is placed on the horizontal portion 12a of the L-shaped member 12. The inverted L-shaped member 13 is composed of a horizontal portion 13a and an inclined portion 13b, on which a plate-like material such as a tread board is hung. FIG. 5 is a left side view of the shackle 14, in which 14a is a ring portion, 14b is a bolt, and 14c is a nut. The shackle 14 serves as the connector of the first invention and includes a U-shaped ring portion 14a, a bolt 14b, and a nut 14c. The two shackles 14 are attached to the left and right ends of the frame plate 11 of the sling 10 by inserting the shafts of the bolts 14b of the shackles 14 into the holes 11b at the left and right ends of the engagement plate 11 of the sling 10 and screwing in the nuts 14c. The number of L-shaped members 12 is not limited to 16 (8 x 2) as shown in the figure, but is appropriately selected within a range of 2 to 30 depending on the left-right length of the engaging plate 11, etc., and the number of inverted L-shaped members 13 is also not limited to 3 as shown in the figure, but is appropriately selected within a range of 1 to 10.

[0023] [Lift 20] 6(a) is a plan view of the lifting body 20, FIG. 6(b) is a rear view of the lifting body 20, FIG. 6(c) is a right side view of the lifting body 20, and FIG. 6(d) is a cross-sectional view taken along line XX in FIG. 6(b). In the figure, 21 is a frame, 21a is a frame body, 21b is an end, 21c is a ring portion, 21d is a hole, 22 is a first ball bearing, 23 is a second ball bearing, 24 is a split pin, and GA is a gap portion. The lifting body 20 has a structure including a C-shaped frame 21, a pair of first ball bearings 22, a pair of second ball bearings 23, and a split pin 24. The frame 21 is composed of a frame body 21a having a circular cross section, an end portion 21b, and a ring portion 21c located opposite to the end portion 21b, with a hole 21d formed in the ring portion 21c. The end 21b of the left frame body 21a and the end 21b of the right frame body 21a are spaced apart from each other to form a gap GA. The first ball bearings 22 are fitted into the ring portion 21c side of the frame body 21a, and are arranged in pairs facing each other. The second ball bearings 23 are fitted into the end portion 21b of the frame body 21a and are arranged in pairs facing each other. In this case, the outer diameter of the end portion 21b is slightly smaller than the outer diameter of the frame body 21a, and the end portion 21b forms a stepped portion, preventing the second ball bearing 23 from moving toward the frame body 21a. The split pin 24 prevents the second ball bearing 23 from falling off, and is inserted into a pin hole provided at the tip of the end 21b. Guide pipes 81 and 82 are inserted inside the frame 21 of the lifting body 20, and the first ball bearing 22 and the second ball bearing 23 roll on the circumferential surfaces of the guide pipes 81 and 82, causing the lifting body 20 to rise and fall along the guide pipes 81 and 82.

[0024] [Lifting body fixing boxes 30, 40, clamps 50, 60] Figure 7 shows the state in which the lifting body 20 and clamp 50 are attached to the lifting body fixing box 30, where (a) is a plan view, (b) is a front view, (c) is a rear view, (d) is a left side view, and (e) is a right side view. In the figure, 31 is a box frame, 31a is a top panel, 31b is a front panel, 31c is a side panel, 31d is a bottom panel, 11e is a vertical frame, 32 is an eye bolt, 32a is a ring, 32b is a shaft, 32c is a nut, 32d is a washer, 25 is a fixing bolt, 26 is a nut, 51 is the clamp body, 52 is a clamp piece, 53 and 54 are pins, 55 is a tightening bolt, 56 is a nut, 57 is a mounting bolt, and 58 is a nut. The lifting body fixing box 30 is the lifting body fixing member of the first invention, and consists of a box frame 31 and an eye bolt 32. The box frame 31 has an L-shaped top panel 31a, a front panel 31b, a side panel 31c, a bottom panel 31d and a vertical frame 11e. The eye bolt 32 has a ring 32a and a shaft 32b, and the tip of the shaft 32b is a threaded portion onto which a nut 32c is screwed. A through hole is provided in the lower right corner of the top plate 31a of the box frame 31, and the shaft 32b of the eye bolt 32 is inserted into this through hole, and a nut 32c is screwed onto the tip of the shaft 32b, thereby fixing the eye bolt 32 to the top plate 31a. The upper left portion of the bottom plate 31d of the box frame 31 is bulged out in a semicircular shape, and the semicircular portion is provided with an insertion hole through which the fixing bolt 25 is inserted. Then, the frame 21 is placed on the bottom plate 31d of the box frame body 31 so that the hole 21d of the C-shaped frame 21 of the lifting body 20 matches the insertion hole of the bottom plate 31d, and the fixing bolt 25 is inserted into the hole 21d and the insertion hole of the bottom plate 31d, and the nut 26 is screwed onto the fixing bolt 25, thereby fixing the lifting body 20 to the box frame body 31.

[0025] As shown in FIG. 7, the clamp 50 includes a clamp body 51, a clamp piece 52, a mounting bolt 57, and the like. In the clamp 50, the right end of the clamp piece 52 is rotatably connected to the right end of the clamp body 51 by a pin 53, a tightening bolt 55 is rotatably attached to the left end of the clamp body 51 by a pin 54, and an attachment bolt 57 is attached to the back side of the clamp body 51 so as to protrude outward. Then, the clamp 50 is fixed to the box frame 31 by inserting the mounting bolt 57 into a through hole provided at a position toward the left of the center of the front plate 31b of the box frame 31 and screwing and tightening the nut 58 onto the mounting bolt 57. Furthermore, the lifting body fixing box 40 is the lifting body fixing member of the first invention, and has a left-right symmetrical structure with the lifting body fixing box 30, and is provided with a box frame body and eye bolt 32 that are left-right symmetrical with the box frame body 31. The clamp 60 has the same structure as the clamp 50, and is provided with the same clamp body, clamp piece, mounting bolt, etc. as the clamp body 51, clamp piece 52, mounting bolt 57, etc. of the clamp 50, and is arranged left-right symmetrical with the clamp 50. The lifting body 20 is fixed to the bottom panel of the box frame of the lifting body fixing box 40 in the same manner as the box frame 31 of the connecting box 30, and a clamp 60 is fixed to a position towards the right of the center of the front panel of the box frame of the connecting box 40 with a mounting bolt and nut in the same manner as the clamp 50.

[0026] [Lifting frame 70, guide pipes 81, 82] Figure 8(a) is a perspective view of the vertical frame of the lifting frame 70, Figure 8(b) is a plan view of the vertical frame of the lifting frame 70, and Figure 8(c) is a perspective view of the horizontal frame of the lifting frame 70, in which 71 is the vertical frame, 72 is the vertical pipe, 73a to 73d are pocket fittings, 74a to 74d are pocket portions, 75 is the horizontal frame, 76 is the horizontal pipe, and 77a and 77b are wedge portions. As shown in FIGS. 1 to 4, the lifting frame 70 is made up of a pair of vertical frames 71 and two horizontal frames 75. The vertical frame 71 is a short support used in wedge-tight scaffolding, and is composed of a vertical pipe 72, pocket metal fittings 73a to 73d, and the like. The pocket fittings 73a to 73d have a U-shaped horizontal cross section, and four pocket fittings 73a to 73d are arranged at 90-degree intervals with steps in the circumferential direction of the vertical pipe 72, and pocket portions 74a to 74d are formed between the pocket fittings 73a to 73d and the circumferential surface of the vertical pipe 72. The horizontal frame 75 is a handrail used in combination with the support of a wedge-tightening scaffolding, and the horizontal pipe 76 is composed of wedge portions 77a, 77b, etc. In the lifting frame 70, a pair of vertical frames 71 are arranged side by side in the X direction (left and right direction), and the wedge portions 77a, 77b of two horizontal frames 75 arranged in the Z direction (up and down direction) are fitted into the upper pocket portions 74a to 74d and lower pocket portions 74a to 74d of the left and right vertical frames 71, respectively.

[0027] The guide pipes 81 and 82 are long metal pipes that form a pair of vertical rod-shaped members in the first invention, and are arranged side by side in the X direction (left and right direction) with a gap between them, and are fixed to pillars or the like (not shown) of the scaffolding part that has been assembled earlier. As shown in Figures 1 to 4, the upper side of the vertical pipe 72 of the left vertical frame 71 that constitutes the lifting frame 70 is clamped and fixed by a clamp 50 fixed to the lifting body fixing box 30, and the upper side of the vertical pipe 72 of the right vertical frame 71 that constitutes the lifting frame 70 is clamped and fixed by a clamp 60 fixed to the lifting body fixing box 40, so that the two lifting bodies 20, the lifting body fixing boxes 30, 40 and the lifting frame 70 rise and fall together along the guide pipes 81, 82.

[0028] [Assembly of lifting system 1] The assembly of the lifting system 1 shown in FIGS. 1 to 4 will now be described. First, the left guide pipe 81 is attached to one of two posts erected on the ground to form a scaffold, and the right guide pipe 82 is attached to the other post. Next, the lifting body fixing boxes 30, 40 to which the lifting body 20 is fixed are clamped and fixed by the clamps 50, 60 to the two vertical pipes 72 on the left and right of the lifting frame 70. Then, the lifting body 20 is passed through the guide pipes 81 and 82 (so that the guide pipes 81 and 82 are positioned between the first ball bearing 22 and the second ball bearing 23). In this state, holes 11b at the left and right ends of the frame plate 11 of the sling 10 are connected to rings 14a of eyebolts 14 of the lifting body fixing boxes 30, 40 by shackles 14. Finally, the hook portion 3 of the lifting device is hooked into the hole 11 a at the top of the frame plate 11 of the lifting tool 10 . As a result, the lifting device lifts the lifting tool 10, and the lifting body 20, the lifting body fixing boxes 30, 40 and the lifting frame 70 rise together while the lifting body 20 remains horizontal and along the guide pipes 81, 82.

[0029] [Transportation of materials using lifting system 1] Figure 9 shows an example of materials transported by the lifting system 1 (lifting device 2), where Figure 9(a) is an oblique view of a long support used in a wedge-tight scaffolding, and Figure 9(b) is an oblique view of a tread used in the scaffolding, and in the figure, 91 is a support, 92 is a vertical pipe, 93 and 94 are pocket portions, and 100 is a tread. As shown in FIG. 9( a ), the support 91 is made up of a long vertical pipe 92 and pocket portions 93 and 94 . The pocket portions 93 and 94 serve as fastening portions in the present invention, and are the same as the pocket portions 74a to 74d formed by the pocket fittings 73a to 73d of the vertical pipe 72 of the vertical frame 71. The step board 100 is a plate-shaped material in the present invention, and as shown in Figure 9(b), a net is attached to a rectangular frame, and hooks for hanging on brackets or handrails are attached to the four corners of the frame. In addition, the rod-shaped material in the present invention is not limited to a support pole having a pocket portion as described above, but may also be a support pole having a flange fitting, etc., in which case the flange fitting, etc. becomes the fastening portion in the present invention. Furthermore, the plate-shaped material in the present invention is not limited to a tread board, but may be an anti (cloth board), a scaffolding board, or the like.

[0030] FIG. 10 is a perspective view showing the state in which the support 91 and the tread 100 are placed on the hoisting tool 10 of the hoisting device 2 and transported. As shown in Figure 10, the pocket portions 93 of the supports 91 are placed on the L-shaped members 12 of the sling 10, spanning adjacent horizontal portions 12a (in the figure, eight supports 91 are placed on the horizontal portions 12a of the L-shaped members 12), and the step 100 is hooked onto the horizontal portion 13a of the central L-shaped member 13 so that the inclined portion of the step 100 protrudes from the mesh portion of the L-shaped member 13. In this case, the vertical portion 12b of the L-shaped member 12 prevents the pocket portion 93 from sliding down the horizontal portion 12a and causing the support 91 to fall, and the inclined portion 13b of the inverted L-shaped member 13 prevents the tread 100 from sliding down the horizontal portion 13a of the inverted L-shaped member 13. When the lifting tool 10 is lifted by the lifting device, the lifting body 20 rises along the guide pipes 81, 82, and the lifting body fixing boxes 30, 40 and the lifting frame 70 also rise together with the lifting body 20, and the support 91 and tread 100 on the lifting tool 10 are transported to a high place. At this time, since the hoisting tool 10 is connected to the lifting body fixing boxes 30, 40, the rod-shaped or plate-shaped materials placed on the hoisting tool 10 do not sway back and forth or left and right even if they are blown by the wind, and the materials can be transported stably to a high place with little risk of falling. Furthermore, the lifting body 20 is attached to the lifting body fixing boxes 30, 40, and the lifting body 20 rises along the guide pipes 81, 82, so even if rod-shaped or plate-shaped materials are placed on the lifting tool 10 and lifted, the lifting tool 10 rises smoothly and stably, and there is little risk of the materials falling. Furthermore, since the lifting frame 70 is attached to the left and right lifting body fixing boxes 30, 40 by clamps 50, 60, the left and right lifting body fixing boxes 30, 40 are kept level, and even when a rod-shaped or plate-shaped material is placed on the lifting tool 10 and lifted, it rises smoothly with a balanced left and right state. Furthermore, the lifting device 2 has no depth, meaning that the materials placed on the sling 10 do not protrude forward, and even if the materials being transported fall, they will not fall outside the scaffolding, minimizing the risk of injury to workers.

[0031] [Overall configuration of the lifting device of the second invention] Figure 11 is an oblique view showing the lifting device of the second invention (invention related to claim 3) and the overall configuration of the lifting system including this lifting device, Figure 12 is a plan view of the lifting system of Figure 11, Figure 13 is a front view of the lifting system of Figure 11, Figure 14 is a rear view of the lifting system of Figure 11, and Figure 15 is a right side view of the lifting system of Figure 11. In the figure, 101 is a lifting system, 102 is a lifting device, 111 is an engagement plate, 111a and 111b are holes, 111c and 111d are windows, 120 and 130 are hanging tools, 121 and 131 are T-shaped plates, 121a and 131a are hanging pieces, 122 and 132 are L-shaped members, 122a and 132a are horizontal members, 122b and 132b are vertical members, 123 and 133 are inverted L-shaped members, 123a and 133a are horizontal members, 123b and 133b are inclined members, 125 , 126, 135, 136 are mounting bolts, 125n, 126n, 135n, 136n are nuts, 140 is a lifting frame, 141, 142 are vertical frames, 143, 144 are horizontal frames, 150, 160, 170, 180 are clamps, and 158, 168, 178, 188 are nuts. In each figure, X is the left-right direction, Y is the front-back direction, and Z is the up-down direction. The same symbols are used for parts that are the same as those in the lifting system 1 shown in Figures 1 to 4. As shown in the figure, the lifting system 101 is composed of a lifting device 102, a lifting device equipped with a hook portion 3, and guide pipes 81 and 82 that guide the lifting device 102 as it rises and falls, and the hook portion 3 serves as the lifting portion of the lifting mechanism in this second invention. The lifting device 102 is composed of an engagement plate 111, lifting devices 120, 130, a shackle 14, a lifting body 20, lifting body fixing boxes 30, 40, clamps 50, 60, and a lifting frame 140.

[0032] [Engagement plate 111, hanging fixtures 120, 130] The engagement plate 111 is the engagement member of the second invention, and is approximately pentagonal like the engagement plate 11 of the lifting device 2 of the first invention, with a hole 111a at the top center into which the hook portion 3 of the lifting device is hooked, holes 111b at the left and right ends through which the shaft portion of the bolt 14b of the shackle 14 is inserted, and windows 111c and 111d on the left and right, and is made of a metal material such as iron or aluminum, fiber-reinforced plastic, etc. The suspender 120 consists of a T-shaped plate 121, an L-shaped member 122, and an inverted L-shaped member 123, and the suspender 130 consists of a T-shaped plate 131, an L-shaped member 132, and an inverted L-shaped member 133, and both suspenders are made of metal materials such as iron and aluminum, fiber-reinforced plastic, etc. The suspenders 120 and 130 have the same structure, and in both suspenders, eight L-shaped members 122, 132 arranged at equal intervals in the X direction are attached to the top front surface of the T-shaped plates 121, 131, and inverted L-shaped members 123, 133 are attached to the lower ends of the hanging pieces 121a, 131a. Like the L-shaped member 12 of the sling 10, the L-shaped members 122, 132 consist of horizontal portions 122a, 132a and vertical portions 122b, 132b, the spacing between which is slightly wider than the outer diameter of the support used in wedge-tightened scaffolding, and the fastening portion protruding from the periphery of the support is placed on the horizontal portions 122a, 132a of the L-shaped members 122, 132. Similarly to the inverted L-shaped member 13 of the sling 10, the inverted L-shaped members 123 and 133 are made up of horizontal portions 123a and 133a and inclined portions 123b and 133b, and plate-like materials such as treads are hung on these. Bolt holes for inserting bolts 125 and 126 are provided at the upper left and right sides of T-shaped plate 121 of suspender 120, and bolt holes for inserting bolts 135 and 136 are also provided at the upper left and right sides of T-shaped plate 131 of suspender 130. In addition, the lifting device in the lifting device of the second invention is not limited to one consisting of two T-shaped plates such as lifting device 120 and lifting device 130, but may be one consisting of a T-shaped plate formed by integrating T-shaped plates 121 and 131, or one consisting of three or more T-shaped plates.

[0033] [Lifting frame 140] As shown in FIGS. 11 to 14, the lifting frame 140 is made up of a pair of vertical frames 141 and 142, two horizontal frames 143 and 144, and clamps 150, 160, 170, and 180. The vertical frames 141, 142 are made of short metal vertical pipes, and unlike the vertical frame 71 (a support of a wedge-tightened scaffolding) of the lifting frame 70 of the lifting device 2, they are ordinary vertical pipes without pocket fittings on the periphery. The horizontal frames 143, 144 are made of short horizontal metal pipes, and unlike the horizontal frame 75 (wedge-tightened scaffolding handrail) of the lifting frame 70 of the lifting device 2, they are ordinary horizontal pipes without wedges on either end. Bolt holes are provided in the left side of the upper horizontal frame 143 at positions that overlap the bolt holes of the T-shaped plate 121, and mounting bolts 125 and 126 are inserted through the T-shaped plate 121 and the horizontal frame 143, and nuts 125n and 126n are screwed onto the mounting bolts 125 and 126, thereby fixing the T-shaped plate 121 to the front left side of the horizontal frame 143. Similarly, bolt holes are provided on the right side of the horizontal frame 143 at positions that overlap with the bolt holes of the T-shaped plate 131, and mounting bolts 135 and 136 are inserted through the T-shaped plate 131 and the horizontal frame 143, and nuts 135n and 136n are screwed onto the mounting bolts 135 and 136, thereby fixing the T-shaped plate 131 to the front right side of the horizontal frame 143. Additionally, bolt holes are provided at the left and right ends of the upper horizontal frame 143 at positions where the clamps 150, 160 overlap, through which the mounting bolts of these clamps are inserted. Similarly, at the positions where the clamps 170, 180 at the left and right ends of the lower horizontal frame 144 overlap, there are provided bolt holes through which the mounting bolts of these clamps are inserted. Clamps 150, 160, 170, and 180 have the same structure as clamp 50, and include the same clamp body 51, clamp piece 52, and mounting bolt 57 as clamp 50 (see FIG. 7).

[0034] [Assembly of Lifting System 101] The assembly of the lifting system 101 shown in FIGS. 11 to 15 will now be described. First, as with the lifting system 1, the left guide pipe 81 is attached to one of two posts erected on the ground to form a scaffold, and the right guide pipe 82 is attached to the other post. Next, the lifting body fixing boxes 30 and 40 to which the lifting body 20 is fixed are clamped and fixed by clamps 50 and 60 near the top of the two left and right vertical frames 141 and 142 of the lifting frame 140 . Then, similarly to the cargo lifting system 1, the lifting body 20 is passed through the guide pipes 81 and 82 (so that the guide pipes 81 and 82 are positioned between the first ball bearing 22 and the second ball bearing 23). In this state, holes 111b at the left and right ends of the engagement plate 111 and rings 14a of the eyebolts 14 on the elevator body fixing boxes 30, 40 are connected by shackles 14. Next, the left and right ends of the horizontal frame 143 to which the T-shaped plates 121 and 131 are fixed are placed against the backs of the clamps 150 and 160, and the mounting bolts (same as mounting bolts 57) protruding outward from the backs of the clamps 150 and 160 are inserted into the bolt holes at the left and right ends of the horizontal frame 143. Nuts 158 and 168 are screwed onto these mounting bolts, and with the horizontal frame 143 fixed to the backs of the clamps 150 and 160, the left vertical frame 141 below the clamp 50 is clamped and fixed with the clamp 150, and the right vertical frame 142 below the clamp 50 is clamped and fixed with the clamp 160. In addition, the left and right ends of the horizontal frame 144 are placed against the backs of the clamps 170, 180, and the mounting bolts (same as mounting bolts 57) protruding outward from the backs of the clamps 170, 180 are inserted into the bolt holes at the left and right ends of the horizontal frame 144. Nuts 178, 188 are screwed onto these mounting bolts, and with the horizontal frame 144 fixed to the backs of the clamps 170, 180, the underside of the left vertical frame 141 is clamped and fixed with the clamp 170.

[0035] Then, with horizontal frame 143 fixed to the backs of clamps 150 and 160, the upper side of left vertical frame 141 is clamped and fixed by clamp 150, and the upper side of right vertical frame 142 is clamped and fixed by clamp 160.Furthermore, with horizontal frame 144 fixed to the backs of clamps 170 and 180, the vicinity of the bottom of left vertical frame 141 is clamped and fixed by clamp 170, and the vicinity of the bottom of right vertical frame 142 is clamped and fixed by clamp 180. As a result, the left and right vertical frames 141, 142 and the top and bottom horizontal frames 143, 144 are fixed by the clamps 150, 160, 170, 180 to form the lifting frame 140. Finally, the hook portion 3 of the lifting device is hooked into the hole 111 a at the top of the engagement plate 111 . As a result, the engaging plate 111 is lifted by the lifting device, and the lifting body 20, the lifting body fixing boxes 30, 40 and the lifting frame 140 to which the lifting tools 120, 130 are attached rise together while the lifting body 20 remains horizontal and along the guide pipes 81, 82. The lifting frame in the lifting device of the second invention is not limited to the lifting frame 140 (consisting of a pair of vertical frames 141, 142, two horizontal frames 143, 144, and clamps 150, 160, 170, 180), and may further include a connecting rod that connects the center of the upper horizontal frame 143 with the center of the lower horizontal frame 144, and may use vertical pipes with pocket fittings such as the vertical frame 71 used in the lifting frame 70 of the lifting device of the first invention instead of the vertical frames 141, 142, and connect the left and right vertical pipes with handrails that have wedges fitted into the opposing pocket fittings, thereby increasing the rigidity of the lifting frame.

[0036] [Transportation of materials using the lifting system 101] FIG. 16 is a perspective view showing the state in which a support and a step are placed on the slings 20, 30 of the lifting device 102 for transport. In the figure, 191 is a support, 192 is a vertical pipe, 193, 194 are pockets, and 200 is a step. The support 191 is of the same type as the support 91 shown in FIG. 9( a ), and is made up of a long vertical pipe 192 and pocket portions 193 and 194 . The step board 200 is the same as the step board 100 shown in FIG. 9(b). As shown in Figure 16, the pocket portions 193 of the supports 191 are placed on the L-shaped members 122 of the hanging device 120, spanning adjacent horizontal portions 122a (in the figure, four supports 191 are placed on the horizontal portions 122a of the L-shaped members 122), and the step 200 is hooked onto the horizontal portion 123a of the central L-shaped member 123 so that the inclined portion 123b of the L-shaped member 123 protrudes from the mesh portion of the step 200. Similarly, the pocket portions 193 of the support posts 191 are placed on the L-shaped members 132 of the hanging device 130, spanning adjacent horizontal portions 132a (in the figure, four support posts 191 are placed on the horizontal portions 132a of the L-shaped members 122), and the step 200 is hooked onto the horizontal portion 133a of the central L-shaped member 133 so that the inclined portion 133b of the L-shaped member 133 protrudes from the mesh portion of the step 200. In this case, the vertical portions 122b, 133b of the L-shaped members 122, 132 prevent the pocket portion 193 from sliding down the horizontal portions 122a, 132a and causing the support 191 to fall, and the inclined portions 123b, 133b of the inverted L-shaped members 123, 133 prevent the tread 200 from sliding down the horizontal portions 123a, 133a of the inverted L-shaped members 123, 133. Then, when the engaging plate 111 is lifted by the lifting device, the lifting body 20 rises along the guide pipes 81, 82, and the lifting body fixing boxes 30, 40 and the lifting frame 140 to which the lifting devices 120, 130 are attached also rise together with the lifting body 20, and the support 191 and tread 200 on the lifting devices 120, 130 are transported to a high place.

[0037] In this way, the hoisting devices 120, 130 are fixed to the horizontal frame 143 and then fixed to the vertical frames 141, 141 with clamps 150, 160, and are attached to the lifting frame 140, and this lifting frame 140 is raised and lowered with the lifting body fixing boxes 30, 40 fixed to it, so that the rod-shaped or plate-shaped materials (supports 191, treads 200) placed on the hoisting devices 120, 130 do not sway back and forth or left and right even if they are blown by the wind, etc., and the materials can be transported stably to high places with little risk of the materials falling. In particular, since the hoisting devices 120 and 130 are fixed to the horizontal frame 143 which is fixed to the vertical frames 141 and 141 by clamps 150 and 160, they are more prevented from swaying left and right and front and back compared to the hoisting device 10 of the lifting device 2 which is not fixed to the horizontal frame 75. Furthermore, the lifting body 20 is attached to the lifting body fixing boxes 30, 40, and the lifting body 20 rises along the guide pipes 81, 82, so even if rod-shaped or plate-shaped materials are placed on the hoisting devices 120, 130 and lifted, the hoisting devices 120, 130 rise smoothly and stably, and there is little risk of the materials falling. Furthermore, since the hoisting tools 120 and 130 are attached to the horizontal frame 143 of the lifting frame 140, they are kept horizontal, and even when rod-shaped or plate-shaped materials are placed on the hoisting tools 120 and 130 and lifted, they rise smoothly with a balanced left and right state. Furthermore, the lifting device 102 has no depth, meaning that the materials placed on the hoisting devices 120 and 130 do not protrude forward, and even if the materials being transported fall, they will not fall outside the scaffolding, minimizing the risk of injury to workers. [Industrial Applicability]

[0038] The lifting device of the present invention does not use a large, box-shaped heavy body, so the device is not large-scale, and even when materials are placed on it, the materials can be transported stably to high places without swaying left and right, front and back, and there is little risk of the materials falling.Even if the materials being transported fall, they will not fall outside the scaffolding, and the risk of injury to workers etc. is minimized, so the device can be used to transport materials used to assemble scaffolding to high places. [Explanation of symbols]

[0039] 1. Loading system 2. Lifting equipment 3 Hook part of lifting device 10 Lifting equipment 11 Engagement plate 11a, 11b holes 11c, 11d Window section 11e hanging piece 12 L-shaped member 12a Horizontal section 12b Vertical section 13 Reverse U-shaped member 13a horizontal section, 13b Slope 14 Shackle 14a Ring section 14b Bolt 14c nut 20 Elevating body 21 frames 21a frame body 21b End 21c Ring section 21d hole 22 No. 1 ball bearing 23 No. 2 ball bearing 24 Cotter pin 25 Fixing bolt 26 Nut 30 Lifting body fixing box 31 Box Frame 31a Top plate 31b Front plate 31c side plate 31d bottom plate 11e vertical frame 32 eyebolt 32a Ring 32b Shaft 32c nut 32d washer 30 Lifting body fixing box 50 Clamp 51 Clamp body 52 Clamp piece 53, 54 pins 55 Fastening bolt 56 nuts, 57 Mounting bolts, 58 Nut 60 Clamp 70 Lifting Frame 71 Vertical Frame 72 Vertical Pipe 73a~73d Pocket metal fittings 74a~74d Pocket section 75 horizontal frame 76 Horizontal Pipe 77a, 77b Wedge section 81, 82 Guide pipe 91 Pillar 92 Vertical Pipe 93, 94 Pocket section 100 Treadboard 101 Loading System 102 Lifting equipment 111 Engagement plate 111a, 111b holes 111c, 111d window section 120, 130 Lifting equipment 121, 131 T-shaped board 121a, 131a hanging piece 122, 132 L-shaped member 122a, 132a horizontal part 122b, 132b Vertical section 123, 133 Reverse U-shaped member 123a, 133a horizontal part 123b, 133b Slope 125, 126, 135, 136 Mounting bolts 125n, 126n, 135n, 136n nuts 140 Lifting Frame 141, 142 Vertical frame 143, 144 Horizontal frame 150, 160, 170, 180 clamp 158, 168, 178, 188 Nuts 191 Post 192 Vertical Pipe 193, 194 Pocket section 200 Treadboard GA gap

Claims

1. A lifting device that uses a lifting mechanism to transport rod-shaped materials having protruding portions on their periphery, a lifting tool including an engaging member that engages with the lifting portion of the lifting mechanism and a plurality of rod-shaped material placing members attached to the engaging member and on which the protruding portions of the rod-shaped materials are placed; a pair of lifting bodies that move up and down along a pair of vertical rod-shaped members that are spaced apart from each other; a pair of lifting body fixing members that fix the pair of lifting bodies, respectively; a connector that connects the suspender and the pair of lifting body fixing members; a lifting frame for holding the pair of lifting body fixing members so that the pair of lifting bodies can be lifted and lowered along the pair of vertical rod-shaped members while maintaining horizontality; A lifting device comprising:

2. 2. The lifting device according to claim 1, wherein the lifting frame comprises a pair of vertical frames fixed to the pair of lifting body fixing members, and a horizontal frame suspended between the pair of vertical frames.

3. A lifting device that uses a lifting mechanism to transport rod-shaped materials having protruding portions on their periphery, an engaging member that engages with the lifting portion of the lifting mechanism; a pair of lifting bodies that move up and down along a pair of vertical rod-shaped members that are spaced apart from each other; a pair of lifting body fixing members that fix the pair of lifting bodies, respectively; a connector that connects the engaging member and the pair of lift body fixing members; a lifting frame for holding the pair of lifting body fixing members so that the pair of lifting bodies are kept horizontal and move up and down along the pair of vertical rod-shaped members; a lifting tool having a plurality of rod-shaped material placing members attached to the lifting frame and on which the protruding portions of the rod-shaped materials are placed; A lifting device comprising:

4. 4. The lifting device according to claim 3, wherein the lifting frame has a pair of vertical frames fixed to the pair of lifting body fixing members, and the hoisting device is fixed to the pair of vertical frames.

5. The rod-shaped material is a support used in a wedge-tightening scaffolding, the protrusion is a fastening portion attached to the support, 5. A lifting device according to claim 1, wherein the rod-shaped material placing members are L-shaped members arranged at intervals wider than the outer diameter of the support columns.

6. 6. The lifting device according to claim 1, wherein the lifting tool is provided with a plate-shaped material hooking member for hooking a plate-shaped material.

Images