Cart slings and carts

Abstract

To provide a hanging tool for a truck capable of reducing the effort and time when materials are loaded on the truck and the transported materials are raised / lowered.SOLUTION: A hanging tool for a truck has a pair of traverse frame members 21 separated from each other, arranged in parallel, and supporting the load-carrying platform of a truck 10 from the lower surface side, a pair of connecting frame members 22 separated from each other, arranged in parallel, to connect the traverse frame members 21, and a hook part 3 attached to both ends of each of the traverse frame members 21, and on which the fastener of an elevating machine for hanging and rising / lowering the truck 10 is hung.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a hoisting device for a carriage used to hoist a carriage loaded with construction materials or the like, and to a carriage equipped with this hoisting device for a carriage. [Background technology]

[0002] As a cart for carrying and transporting materials or cargo, for example, a transport cart is known which has a horizontal load support plate formed as a single plate of uniform thickness on which the load is placed, and four swivel wheels attached to the underside of the load support plate that rotate eccentrically (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-291132 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, construction materials and the like that are loaded onto a cart and transported may be lifted or lowered, for example, by a crane, to a location where the construction materials and the like will actually be used. In this case, with a conventional cart such as that disclosed in Patent Document 1, for example, it is necessary to transfer the construction materials and the like loaded onto the cart to a cart for lifting and lowering, which poses a problem of requiring a great deal of time and effort each time the construction materials and the like are lifted or lowered.

[0005] In the trolley of Patent Document 1, the load support plate is formed as a single plate of uniform thickness, and each swivel wheel is fixed directly to the underside of the load support plate with a bolt, so that the load of materials and the like placed on the load support plate is supported only by the load support plate, which causes the problem that the load capacity is limited to a small value, and also causes the problem that if an attempt is made to increase the load capacity, the thickness of the entire load support plate becomes thicker, making the trolley itself very heavy.

[0006] Therefore, the present invention aims to provide a hoisting device for a dolly and a dolly that can reduce the effort and time required to raise and lower materials or cargo that are loaded onto and transported on the dolly. Another aim of the present invention is to provide a structure that can improve the strength of the dolly through partial improvements. [Means for solving the problem]

[0007] In order to solve the above problem, the trolley hoisting device of the present invention may be configured to be assembled to a trolley and used, and may include a pair of span frame members that are arranged parallel to and spaced apart from each other to support the trolley's loading platform from the underside, connecting frame members that connect the span frame members, and hook portions attached to both ends of each span frame member to which fasteners of a lifting machine for suspending and raising and lowering the trolley can be attached.

[0008] In the dolly hoisting device according to the present invention, the hook portion may include an engaging portion that engages with a load fastener for fastening and securing materials loaded on the loading platform.

[0009] The trolley hoisting device according to the present invention may be configured so that the side edges of the spanning frame members abut against the side edges of a member or structure that forms irregularities on the underside of the loading platform.

[0010] A bogie according to the present invention may include the bogie hoisting device described above.

[0011] The trolley of the present invention may have a wheel receiving member that is positioned across the underside of the loading platform and to which wheels are attached, and the wheel receiving member may have a base flange formed in the shape of a rectangular plate, a pair of webs that protrude downward and face each other while being spaced apart from each of the two side edges of the underside of the base flange along the longitudinal direction of the rectangle, and a pair of lower flanges that are connected to the lower ends of each of the webs and face the base flange.

[0012] The dolly according to the present invention may be configured such that a gap is provided between a frame body constituting a part of the loading platform and the wheel receiving member, thereby forming a gap for hand-carrying. [Effects of the Invention]

[0013] According to the present invention, materials, etc. can be transported using a cart, and then the cart can be lifted and lowered by a crane or the like using the hook portion to the location where the materials, etc. will actually be used, thereby reducing the effort and time required to lift and lower materials, etc. that have been loaded onto and transported on a cart.

[0014] In addition, according to the present invention, since there are two span frame members that span the underside of the platform of the trolley and support the trolley, these two span frame members function as beams supporting both ends, making it possible to improve the strength of the trolley as a whole.

[0015] According to the present invention, by utilizing the engaging portion of the hook, it is possible to fasten and secure materials loaded on the cart with a cargo fastening device to prevent the load from collapsing, thereby ensuring safety when transporting or lifting materials loaded on the cart.

[0016] According to the present invention, it is possible to prevent the trolley hoisting device from shifting / rattle relative to the trolley, improve the stability of the assembly of the trolley hoisting device to the trolley, and ultimately improve safety when raising and lowering materials, etc. using the trolley.

[0017] According to the present invention, the wheel receiving member, which has a web and a lower flange on each of the longitudinal edge portions of the base flange and is therefore configured to have a larger cross-sectional modulus than a simple flat plate material, is placed across the underside of the platform of the trolley to support the trolley, so that the wheel receiving member functions as a beam fixed at both ends, thereby improving the strength of the trolley as a whole.

[0018] According to the present invention, when carrying the cart, the hand can be inserted into the handling gap and used as a handle, so that even if the cart is large in size, it can be easily carried. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a perspective view showing a carriage hoisting device according to an embodiment of the present invention; [Figure 2] FIG. 2 is a front view of the carriage hoisting device shown in FIG. [Figure 3] FIG. 2 is a side view of the carriage hoisting device shown in FIG. [Figure 4] FIG. 2 is a plan view of the carriage hoisting device shown in FIG. [Figure 5] FIG. 2 is a bottom view of the carriage hoisting device shown in FIG. [Figure 6] 2 is a front view of the bogie to which the bogie hoisting device shown in FIG. 1 is attached. FIG. [Figure 7] 2 is a side view of the bogie to which the bogie hoisting device shown in FIG. 1 is attached. FIG. [Figure 8] 2 is a plan view of the bogie to which the bogie hoisting device shown in FIG. 1 is attached. FIG. [Figure 9] 2 is a bottom view of the bogie to which the bogie hoisting device shown in FIG. 1 is attached. FIG. [Figure 10] FIG. 2 is a perspective view showing a wheel receiving member of the bogie according to the embodiment. [Figure 11] FIG. 11 is a front view of the wheel receiving member shown in FIG. [Figure 12] FIG. 11 is a side view of the wheel receiving member shown in FIG. [Figure 13] FIG. 11 is a plan view of the wheel receiving member shown in FIG. [Figure 14] FIG. 11 is a bottom view of the wheel receiving member shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0020] The present invention will be described below based on the illustrated embodiments. In the following description, the front-rear direction, left-right direction, and up-down direction are defined as indicated by the arrows in the drawings.

[0021] Figures 1 to 5 show a dolly hoisting device 1 according to an embodiment of the present invention, and Figures 6 to 9 show a dolly 10 to which the dolly hoisting device 1 according to this embodiment is attached. This dolly hoisting device 1 is attached to the dolly 10 and functions as a hoisting device for hoisting and raising and lowering the dolly 10 loaded with various materials, cargo, etc., using a crane or the like.

[0022] The dolly 10 has a frame body 11 made up of multiple frame members, a load receiving plate 16 attached to the upper surface of the frame body 11, and wheels 17 attached to the lower surface of the frame body 11. In this embodiment, the loading platform of the dolly 10 is made up of the frame body 11 and the load receiving plate 16. The dolly hoisting device 1 also has a dolly support part 2 made up of multiple frame members, a hook part 3 attached to the dolly support part 2, and an engagement part 4 attached to the dolly support part 2.

[0023] The frame body 11 of the trolley 10 has a frame frame 12 formed by combining and joining tubular (cylindrical, rod-shaped) frame members in a frame body (frame-like) shape, and a lattice frame 13 formed by combining and joining tubular (cylindrical, rod-shaped) frame members in a lattice shape inside the frame frame 12.

[0024] The frame 12 is formed by connecting four frame members to form a rectangular frame (frame-like) shape in a plan view. Specifically, a front frame member 12a and a rear frame member 12b, each of which is arranged along the left-right direction and spaced apart from each other in the front-rear direction, and a pair of left and right side frame members 12c, each of which is arranged along the front-rear direction and spaced apart from each other in the left-rear direction, are assembled to form a rectangular frame (frame) in a plan view.

[0025] Corner members 14 are disposed at each of the four corners of the frame 12, which is rectangular in plan view. The corner members 14 are used to connect and join the frame members that make up the frame 12, and have two connecting gaps 141 provided along the left-right direction and the front-rear direction, respectively, and an insertion hole 142 provided along the up-down direction.

[0026] The connecting gaps 141 of the corner members 14 are formed as hollow portions into which the frame members constituting the frame 12 fit. The front frame member 12a and the side frame member 12c are inserted, and the rear frame member 12b and the side frame member 12c are inserted, respectively, into the two connecting gaps 141 of the corner member 14. The corner members 14 and the frame members constituting the frame 12 are fixed to each other by fastening members such as screws.

[0027] The insertion hole 142 of the corner member 14 is formed as a hollow portion into which a pipe (such as a single pipe or a steel pipe; not shown) can be inserted and removed freely. A bolt is inserted horizontally into the lower end of the insertion hole 142, and a pipe inserted vertically from the upper opening of the insertion hole 142 is supported by hitting the bolt. The pipe inserted and supported in the insertion hole 142 is used as an operating rod that can be grasped and functions like a handle when moving the cart 10.

[0028] The lattice frame 13 is formed by assembling six frame members inside the rectangular frame 12 to form a lattice shape in plan view. Specifically, four left-right frames 13a, each arranged along the left-right direction and spaced apart from each other in the front-rear direction, and two front-rear frames 13b, each arranged along the front-rear direction and spaced apart from each other in the left-right direction, intersect at right angles to each other and are assembled to form a lattice structure in plan view.

[0029] The left-right frame 13a and the front-rear frame 13b of the lattice frame 13 are joined by welding or fixed to each other with fastening members such as screws. The lattice frame 13 is also joined to the frame 12 by welding or fixed to each other with fastening members such as screws.

[0030] The material of each frame member (pipe material, cylindrical material, rod material) constituting the frame body 11 is not limited to a specific type of material, but an appropriate material is selected as appropriate, taking into consideration, for example, strength and weight. Specific examples of the material of each frame member constituting the frame body 11 include aluminum alloy. Furthermore, each frame member constituting the frame body 11 is, for example, a member formed in the shape of a square pipe.

[0031] The load receiving plate 16 of the cart 10 is used to place materials, luggage, etc., and is formed in a plate shape and attached to the upper surface side of the frame body 11. The load receiving plate 16 is fixed to the frame body 11 by fastening members such as screws.

[0032] The load receiving plate 16 has a front portion 16a and a rear portion 16b stretched between the pair of left and right side frame members 12c, and a central portion 16c between the front portion 16a and the rear portion 16b, and is formed in a roughly L-shape in a plan view. Of the upper surface of the frame body 11, which is rectangular in a plan view, the portions near the front end and the rear end are not covered by the load receiving plate 16, and the left and right portions of the central portion 16c of the load receiving plate 16 between the front portion 16a and the rear portion 16b are also not covered by the load receiving plate 16.

[0033] The wheels 17 of the carriage 10 are attached to the underside of the frame body 11 via wheel receiving members 18 .

[0034] 10 to 14 are views showing the wheel receiving member 18 according to this embodiment. The wheel receiving member 18 is a member that is interposed between the frame body 11 and the wheel 17 to attach the wheel 17 to the frame body 11, and has a base flange 18a, a pair of webs 18b connected to the base flange 18a, and a pair of lower flanges 18c connected to each of the webs 18b.

[0035] The wheel receiving members 18 are arranged along the left-right direction (i.e., the left-right direction is the longitudinal direction), and are attached to the underside of the frame body 11 at a position (reference numeral 18A) near the front end, a position (reference numeral 18B) near the rear end, and an intermediate position in the fore-aft direction (reference numeral 18C). The wheel receiving members 18 are joined to the frame body 11 by, for example, welding or fixed with fastening members such as screws.

[0036] The base flange 18a of the wheel receiving member 18 has a rectangular plate shape, and the wheel receiving member 18 is attached to the frame body 11 with the longitudinal direction of this rectangle aligned with the left-right direction. A pair of webs 18b are formed on the underside of the base flange 18a near the ends of both side edges along the longitudinal direction (in other words, the span direction on the underside of the bed of the bogie 10), protruding / extending downward while being spaced apart. That is, the pair of webs 18b are formed on the underside of the base flange 18a parallel to and facing each other along the longitudinal direction of the base flange 18a. A pair of lower flanges 18c are formed at the lower end of each of the pair of webs 18b, facing the base flange 18a with the web 18b sandwiched therebetween. Each of the pair of lower flanges 18c is formed to protrude / extend from the web 18b on both sides in a direction perpendicular to the longitudinal direction of the web 18b.

[0037] The wheel receiving member 18 has the web 18b and the lower flange 18c in addition to the base flange 18a, and therefore has a larger section modulus than a simple flat plate material having only the base flange 18a, and therefore exhibits high strength.

[0038] The front wheel receiving member 18A, which is attached to the underside of the frame body 11 at a position near the front end, is disposed between the front frame member 12a and the frontmost left-right frame 13a that constitutes the lattice frame 13. The rear wheel receiving member 18B, which is attached to the underside of the frame body 11 at a position near the rear end, is disposed between the rear frame member 12b and the rearmost left-right frame 13a that constitutes the lattice frame 13. Furthermore, the middle wheel receiving member 18C, which is attached to the underside of the frame body 11 at a midpoint in the fore-and-aft direction, is disposed between the two middle left-and-right frames 13a that constitute the lattice frame 13. In the example shown in the figure, the front wheel receiving member 18A and the rear wheel receiving member 18B are arranged as a single integral member spanning the pair of left and right side frame members 12c, and the intermediate wheel receiving member 18C is arranged as a separate member at a position close to each of the pair of left and right side frame members 12c (i.e., the intermediate wheel receiving member 18C is arranged as a pair of left and right members).

[0039] The upper surface of the frame body 11, which is rectangular in plan view, has a portion near the front end that is not blocked by the load receiving plate 16 and is blocked by a front wheel receiving member 18A at a position one step lower than the upper surface of the load receiving plate 16, and the portion near the rear end is blocked by a rear wheel receiving member 18B at a position one step lower than the upper surface of the load receiving plate 16, and furthermore, the left and right side portions of the central portion 16c of the load receiving plate 16 are blocked by an intermediate wheel receiving member 18C at a position one step lower than the upper surface of the load receiving plate 16.

[0040] In the example shown in the figure, the front and rear ends of the upper surface of the frame body 11 and the left and right side portions of the central portion 16c of the load receiving plate 16 are not blocked by the load receiving plate 16, and multiple gaps are formed between the frame body 11 and the wheel receiving members 18, and these gaps are used as handles by inserting a hand into the handle gaps 19 when carrying the cart 10. By providing the handle gaps 19, the cart 10 can be easily carried even when the frame body 11 is large, for example.

[0041] The material of the wheel receiving member 18 is not limited to a specific type of material, and an appropriate material is selected taking into consideration, for example, strength and weight. The wheel receiving member 18 may be formed by combining multiple parts, but is preferably formed as a single piece from the perspective of ensuring particularly good strength. The wheel receiving member 18 is formed, for example, by die-casting an aluminum alloy.

[0042] Wheel receiving members 18A, 18B are attached to positions near the front and rear ends of the frame body 11, respectively. Free-wheeling wheels (casters) 17A that can rotate about vertical axes are attached to the left and right ends of the underside of the base flange 18a of each of these wheel receiving members 18A, 18B. Furthermore, fixed wheels 17B that are fixed in the front-to-rear direction are attached to the underside of the base flange 18a of each of a pair of left and right wheel receiving members 18C that are attached to the middle of the frame body 11 in the front-to-rear direction. The wheels 17 are fixed to the wheel receiving members 18, for example, by fastening members such as screws via a top plate (mounting base). In the example shown in the figure, the wheels 17 are attached to the underside of the base flange 18a through through-holes 18d provided in the base flange 18a of the wheel receiving member 18, with the top plate (mounting base) sandwiched between a pair of webs 18b and a pair of lower flanges 18c.

[0043] In this embodiment, as described above, swivel wheels 17A are attached to each of the four corners of the underside of the frame body 11, which is rectangular in plan view, and fixed wheels 17B are attached to each of the left and right intermediate portions in the front-to-rear direction. It is optional whether swivel wheels (casters) or fixed wheels are attached as wheels 17 at each position. Furthermore, it is also possible not to attach wheel receiving members 18 or wheels 17 to intermediate positions in the front-to-rear direction of the frame body 11.

[0044] Of the upper surface of the frame body 11, which is rectangular in plan view, the portions near the front end and rear end that are not blocked by the load receiving plate 16, as well as the left and right side portions of the central portion 16c of the load receiving plate 16, are blocked by the wheel receiving members 18 at positions lower than the upper surface of the load receiving plate 16, forming recesses. When the carts 10 are stacked, the wheels 17 enter the recesses that open in the upper surface of the load receiving plate 16 and have the upper surfaces of the wheel receiving members 18 as their bases, preventing the stacked carts 10 from collapsing.

[0045] The cart hoisting device 1 according to this embodiment comprises a pair of span frame members 21 arranged parallel to and spaced apart from each other to support the loading platform of the cart 10 from below, a pair of connecting frame members 22 arranged parallel to and spaced apart from each other to connect the span frame members 21, and hook portions 3 attached to both ends of each span frame member 21 to which fasteners of a lifting machine for suspending and raising / lowering the cart 10 are attached. In this embodiment, the loading platform of the cart 10 is composed of a frame body 11 and a load receiving plate 16.

[0046] The trolley support part 2 of the trolley hoisting device 1 is arranged on the underside of the frame body 11 of the trolley 10 to support the trolley 10, and is formed by combining and joining square pipe material into a frame shape (picture frame shape).

[0047] The bogie support unit 2 is formed by connecting four square pipe members to form a rectangular frame (frame-like) in a plan view. Specifically, a pair of front and rear bridge frame members 21, each arranged along the longitudinal direction (i.e., the left-right direction) of the front frame member 12a and the rear frame member 12b of the bogie 10 and spaced apart from each other in the front-to-rear direction, and a pair of left and right connecting frame members 22, each arranged along the longitudinal direction (i.e., the front-to-rear direction) of the side frame member 12c of the bogie 10 and spaced apart from each other in the left-to-right direction, connecting the left ends and right ends of the pair of front and rear bridge frame members 21, are assembled to form a rectangular frame (frame) in a plan view. The bridge frame members 21 and the connecting frame members 22 of the bogie support unit 2 are joined together by welding or fixed to each other with fastening members such as screws, for example.

[0048] The connecting frame members 22 function to fix the distance between the pair of front and rear span frame members 21, and it is not essential that two connecting frame members are provided. In other words, it is preferable to provide two connecting frame members 22 in order to ensure good strength as the bogie support part 2 and to be able to arrange them without being affected by the structure on the underside of the loading platform of the bogie 10 by providing one connecting frame member on each of the left and right side edges of the bogie 10, but it is also possible to provide only one connecting frame member 22 in the center of the left and right sides.

[0049] The material of each frame member (square pipe material) that constitutes the bogie support unit 2 is not limited to a specific type of material, but an appropriate material is selected as appropriate, taking into consideration, for example, strength and weight. For each frame member that constitutes the bogie support unit 2, for example, a steel square pipe material is used.

[0050] The distance between the pair of front and rear cross-bridge frame members 21 of the bogie support portion 2 is preferably adjusted to a dimension that allows the cross-bridge frame members 21 to abut against the wheel receiving member 18. Specifically, the distance between the cross-bridge frame members 21 is preferably adjusted so that the front surface (side edge) of the front cross-bridge frame member 21 of the pair abuts against the rear surface of the front wheel receiving member 18A (specifically, the rear surface and side edge of the base flange 18a and the lower flange 18c), and the rear surface (side edge) of the rear cross-bridge frame member 21 of the pair abuts against the front surface of the rear wheel receiving member 18B (specifically, the front surface and side edge of the base flange 18a and the lower flange 18c). This prevents the bogie hoisting device 1 from shifting or rattling in the fore-and-aft direction relative to the bogie 10, improving the stability of the assembly of the bogie hoisting device 1 to the bogie 10 and ultimately improving safety when lifting and lowering materials, etc., using the bogie 10. The member against which the side edge of the span frame member 21 abuts does not have to be the wheel receiving member 18, but may be any member or structure that is fixed and arranged so as to form an uneven surface on the underside of the platform of the trolley 10 (specifically, of the frame body 11). Also, the rear surface (side edge) of the front span frame member 21 may abut against the front surface of a member or structure sandwiched in the front-to-rear direction between the pair of front and rear span frame members 21, and the front surface (side edge) of the rear span frame member 21 may abut against the rear surface of the member or structure.

[0051] The hook portion 3 of the trolley hoisting device 1 is used to hook onto a fastener of a lifting machine (e.g., a hook of a crane, etc.) when hoisting and lowering the trolley 10 supported by the trolley support portion 2, and is also used to engage a cargo fastening device (e.g., a lashing belt, a cargo securing belt) to tighten and secure materials, cargo, etc. loaded on the cargo receiving plate 16 of the trolley 10 to prevent the cargo from falling over, and is attached to the trolley support portion 2.

[0052] The hook portions 3 are coupled to both the left and right ends of each of a pair of span frame members 21 at the front and rear of the carriage support portion 2, and a total of four hook portions 3 are provided.

[0053] The hooking part 3 is for hanging a hook of a crane or the like, and is made by bending a rod material with a circular cross section into an upside-down U-shape with the upper part being a curved part 31 and the lower part being a straight part 32 in side view, and is attached to the bridge frame member 21 with the left or right end of the bridge frame member 21 sandwiched between the lower end opening. The hooking part 3 is joined to the bridge frame member 21 by, for example, welding or fixed with a fastening member such as a screw.

[0054] A gap 33 inside the curved portion 31 of the hook portion 3 is used as a space for passing a hook of a crane or the like when the hook is hung on the curved portion 31.

[0055] The engaging portion 4 is for engaging a cargo fastener for fastening and securing materials etc. on the cargo receiving plate 16, and is formed by bending a rod material with a circular cross section into a U-shape with a curved portion, and one end of a pair of opposing straight portions of the U-shape is attached to the underside of the connecting frame member 22 and the other end is attached to the upper side of the connecting frame member 22 at a position adjacent to or near the hooking portion 3, with the curved portion of the U-shape facing outward in the left-right direction.

[0056] The gap 41 inside the curved portion of the engaging portion 4 is used as a space for passing a cargo fastener to engage with the engaging portion 4, which fastens and secures materials on the cargo receiving plate 16.

[0057] The length of the bridge frame member 21 of the cart support portion 2 along the left-right direction and the spacing between the pair of left and right hook portions 3 opposing each other in the left-right direction are preferably adjusted to dimensions that allow the hook portions 3 to abut against the side frame members 12c of the frame 12. Specifically, the length of the bridge frame member 21 and the spacing between the hook portions 3 are preferably adjusted so that the surface of each of the pair of left and right hook portions 3 that faces the opposing hook portion 3 in the left-right direction abuts against the side surface (side edge) of the side frame member 12c. This prevents left-right shifting / rattle of the cart hoisting device 1 relative to the cart 10, improving the stability of the assembly of the cart hoisting device 1 to the cart 10 and ultimately improving safety when raising and lowering materials, etc., using the cart 10.

[0058] It is preferable that the trolley hoisting device 1 is detachably fastened to the trolley 10 by, for example, a bolt via a connecting fitting (not shown) disposed between the frame body 11 and the spanning frame member 21, but it may not be fastened. In the example shown in the figure, a bolt hole 211 is formed in the spanning frame member 21, and the trolley hoisting device 1 is configured to be connectable and fixed to the frame body 11 by a bolt 212 passing through this bolt hole 211.

[0059] With the dolly hoisting device 1 and dolly 10 according to this embodiment, after transporting materials, etc. using the dolly 10, it is possible to use the hooking portion 3 to lift and lower the dolly 10 by a crane or the like to the location where the materials, etc. will actually be used, thereby reducing the effort and time required to lift and lower materials, etc., that have been loaded onto and transported on the dolly 10. Furthermore, by using the hooking portion 3 (particularly the engaging portion 4), it is possible to fasten and secure the materials, etc., on the load receiving plate 16 with a load fastener to prevent them from collapsing, thereby ensuring safety when transporting and lifting materials, etc., loaded on the dolly 10.

[0060] In addition, the bogie hoisting device 1 and bogie 10 of this embodiment have two span frame members 21 that span the underside of the frame body 11 of the bogie 10 in the left-right direction and support the frame body 11, so these two span frame members 21 function as beams supported at both ends, making it possible to improve the strength of the bogie 10 as a whole.

[0061] Furthermore, the bogie 10 according to this embodiment has three wheel receiving members 18 that are placed across the underside of the frame body 11 of the bogie 10 in the left-right direction to support the frame body 11, and the wheel receiving members 18 have a shape with a larger cross-sectional modulus than a simple flat plate material, so that these three wheel receiving members 18 function as beams fixed at both ends, making it possible to improve the strength of the bogie 10 as a whole.

[0062] Although the embodiments of the present invention have been described above, the specific configuration is not limited to the above embodiments, and design changes within the scope of the present invention are also included within the scope of the present invention. For example, in the above embodiments, the bogie hoisting device 1 of the present invention has been described as being applied to the bogie 10 shown in the drawings. However, the specific configuration of a bogie to which the bogie hoisting device 1 of the present invention can be applied is not limited to the bogie 10 in the above embodiments. Any bogie may have a specific configuration as long as it has a structure corresponding to the frame body 11 and load receiving plate 16 that constitute the loading platform of the bogie 10 shown in the drawings, and the bogie support portion 2 of the bogie hoisting device 1 can be assembled to the underside of the frame body 11 and load receiving plate 16. For example, while the bogie 10 in the above embodiments has six wheels, it may also have four wheels (in which case, the wheel receiving members 18 may be two). Furthermore, a bogie may have a structure corresponding to the load receiving plate 16 in the above embodiments but not a structure corresponding to the frame body 11 (i.e., a bogie whose loading platform is composed only of the load receiving plate). Even in a structure that does not have the frame body 11, the necessary strength can be ensured by the carriage hoisting device 1 and the wheel receiving member 18 depending on the application of the carriage.

[0063] Furthermore, in the above embodiment, the longitudinal direction of the load receiving plate 16 of the trolley 10 (which is the direction in which the trolley is normally expected to travel) is set to the front-to-rear direction, and the bridge frame member 21 is arranged along the left-to-right direction (i.e., arranged along a direction perpendicular to the longitudinal direction of the load receiving plate 16), but it is also possible to set the longitudinal direction of the load receiving plate 16 of the trolley 10 to the left-to-right direction, and the bridge frame member 21 is arranged along the left-to-right direction (i.e., arranged along the longitudinal direction of the load receiving plate 16).

[0064] Furthermore, although in the above embodiment the cart hoisting device 1 has the engaging portion 4, the cart hoisting device 1 may not have the engaging portion 4. In this case, too, the cart 10 can be lifted and lowered by a crane or the like using the hook portion 3. In this case, it is possible to fasten and secure the materials on the load receiving plate 16 by, for example, wrapping a load securing device (e.g., a lashing belt or a load securing belt) around from the underside of the frame body 11 and circling it so as to unite the cart 10 and the materials on the load receiving plate 16. [Explanation of symbols]

[0065] 1. Carriage hoisting device 2 Bogie support 21. Frame members across 211 Bolt holes 212 volts 22 Connecting frame member 3 Hook 31 Curved section 32 Straight section 33 void 4 Engagement part 41 void 10 carts 11 Frame body 12 Border Frame 12a Front frame member 12b Rear frame member 12c Side frame member 13 Lattice Frame 13a Left and right frame 13b Front-rear frame 14 Corner members 141 Connection gap 142 Insertion hole 16 Loading plate 16a front part 16b rear part 16c central part 17 wheels 17A Free wheel 17B Fixed wheel 18 Wheel support member 18A Front wheel support member 18B Rear wheel support member 18C Intermediate wheel support member 18a Base flange 18b Web 18c bottom flange 18d through hole 19 Handheld gap

Claims

1. The trolley is formed in an upside-down U-shape with an upper curved portion and a lower straight portion, and is arranged on the side of the platform of the trolley, the curved portion protruding above the platform and a lower end opening protruding below the platform, and has a hook portion to be hooked into a gap inside the curved portion for a fastener of a lifting machine for lifting and lowering the trolley, The hook portion has an engaging portion that engages with a load fastener for fastening and fixing materials loaded on the loading platform. A hoisting device for a trolley characterized by the above.

2. The lower end opening sandwiches an end of a span frame member that supports the loading platform from the underside.

2. The hoisting device for a carriage according to claim 1.

3. A carriage hoisting device according to claim 1, A bogie characterized by:

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