JP7549829B2 - Cart hoisting equipment and carts - Google Patents

Description

The present invention relates to a trolley hoisting device used to hoist a trolley loaded with construction materials and the like, and a trolley equipped with this trolley hoisting device.

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

Japanese Patent Application Publication No. 7-291132

However, 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 described in Patent Document 1, for example, it is necessary to transfer the construction materials and the like loaded onto the cart to a lifting cage, which creates the problem that it takes a lot of time and effort every time the construction materials and the like are lifted or lowered.

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 other items 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 overall thickness of the load support plate becomes too thick, making the trolley itself very heavy.

The present invention aims to provide a trolley hoisting device and a trolley that can reduce the effort and time required to raise and lower materials and luggage that are loaded onto the trolley and transported. In addition, the present invention aims to provide a structure that can improve the strength of the trolley through partial improvements.

In order to solve the above problems, the trolley hoisting device of the present invention may be assembled to a trolley for use, and may have a pair of span frame members arranged parallel to and spaced apart from each other to support the platform of the trolley from below, a connecting frame member connecting the span frame members, and a hook portion attached to both ends of each of the span frame members to which a fastener of a lifting machine for suspending and raising and lowering the trolley is attached.

The trolley hoisting device of the present invention may be configured so that the hook portion has an engagement portion that engages a load fastener for fastening and fixing materials loaded on the loading platform.

The trolley hoisting device of the present invention may be configured so that the side edge of the span frame member abuts against the side edge of a member or structure that forms an uneven surface on the underside of the loading platform.

The trolley of the present invention may be equipped with the trolley hoisting device described above.

The dolly according to the present invention may have a wheel receiving member disposed across the underside of the platform to which wheels are attached, the wheel receiving member having a rectangular plate-shaped base flange, a pair of webs that protrude downward and face each other while being spaced apart from both side edges along the longitudinal direction of the rectangle of the underside of the base flange, and a pair of lower flanges that are connected to the lower ends of the webs and face the base flange.

The dolly of the present invention may be configured such that a gap is provided between the frame body constituting a part of the platform and the wheel receiving member to form a gap for carrying.

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 to the location where the materials, etc. will actually be used, reducing the effort and time required to lift and lower materials, etc. that have been loaded onto and transported on a cart.

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

According to the present invention, by utilizing the engaging portion of the hook, it is possible to fasten and secure the materials loaded on the cart with a load fastener to prevent the load from collapsing, thereby ensuring safety when transporting or raising and lowering the materials loaded on the cart.

The present invention makes it possible to prevent the trolley hoisting device from shifting or rattling 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.

According to the present invention, the wheel receiving member, which has a web and a lower flange on each of the longitudinal edges of the base flange and is configured to have a larger section 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, improving the strength of the trolley as a whole.

According to the present invention, when carrying the cart, the hand-holding gap can be inserted and used as a handle, making it easy to carry the cart even if the dimensions of the cart are large.

1 is a perspective view showing a carriage hoisting device according to an embodiment of the present invention; FIG. 2 is a front view of the trolley hoisting device shown in FIG. 1 . FIG. 2 is a side view of the trolley hoisting device shown in FIG. 1 . FIG. 2 is a plan view of the trolley hoisting device shown in FIG. 1 . FIG. 2 is a bottom view of the carriage hoisting device shown in FIG. 1 . FIG. 2 is a front view of the bogie to which the bogie hoisting device shown in FIG. 1 is attached. FIG. 2 is a side view of the bogie to which the bogie hoisting device shown in FIG. 1 is attached. FIG. 2 is a plan view of the bogie to which the bogie hoisting device shown in FIG. 1 is attached. FIG. 2 is a bottom view of the bogie with the bogie hoisting device shown in FIG. 1 assembled thereto. FIG. 4 is a perspective view showing a wheel receiving member of the bogie according to the embodiment. FIG. 11 is a front view of the wheel receiving member shown in FIG. 10 . FIG. 11 is a side view of the wheel receiving member shown in FIG. 10 . FIG. 11 is a plan view of the wheel receiving member shown in FIG. 10 . FIG. 11 is a bottom view of the wheel receiving member shown in FIG. 10 .

The present invention will be described below based on the illustrated embodiment. In the following description, the front-rear, left-right, and up-down directions are defined according to the directions of the arrows in each figure.

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 lowering the dolly 10 loaded with various materials, luggage, etc., using a crane or the like.

The trolley 10 has a frame body 11 formed of multiple frame members, a load-receiving plate 16 attached to the upper surface side of the frame body 11, and wheels 17 attached to the lower surface side of the frame body 11. In this embodiment, the load platform of the trolley 10 is formed by the frame body 11 and the load-receiving plate 16. The trolley hoist 1 also has a trolley support part 2 formed of multiple frame members, a hook part 3 attached to the trolley support part 2, and an engagement part 4 attached to the trolley support part 2.

The frame body 11 of the trolley 10 has a frame frame 12 formed by combining and connecting tubular (cylindrical, rod-shaped) frame members in a frame shape (picture frame shape), and a lattice frame 13 formed by combining and connecting tubular (cylindrical, rod-shaped) frame members in a lattice shape on the inside of the frame frame 12.

The frame 12 is made up of four connected frame members that form a rectangular frame (picture frame) in plan view. Specifically, the front frame member 12a and the 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-right direction, are arranged between the left ends and between the right ends of the front frame member 12a and the rear frame member 12b, and are assembled to form a rectangular frame (picture frame) in plan view.

Corner members 14 are provided 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 connection gaps 141 provided along the left-right direction and the front-back direction, and an insertion hole 142 provided along the up-down direction.

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

The insertion hole 142 of the corner member 14 is formed as a hollow section 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 end 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 is grasped and functions like a handle when moving the cart 10.

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

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 frame 12 by welding or fixed to each other with fastening members such as screws.

The material of each frame member (tube material, cylinder material, bar material) that constitutes the frame body 11 is not limited to a specific type of material, and an appropriate material is selected as appropriate, taking into consideration, for example, strength and weight. A specific example of the material of each frame member that constitutes the frame body 11 is aluminum alloy. Furthermore, for example, a member formed in the shape of a square pipe is used as each frame member that constitutes the frame body 11.

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.

The load-receiving plate 16 has a front portion 16a and a rear portion 16b that are stretched between a 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 roughly in an E shape in a plan view. Of the upper surface of the frame body 11 that is rectangular in 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 sides 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.

The wheels 17 of the trolley 10 are attached to the underside of the frame body 11 via wheel receiving members 18.

Figures 10 to 14 show 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 wheels 17 to attach the wheels 17 to the frame body 11, and has a base flange 18a, a pair of webs 18b that connect to the base flange 18a, and a pair of lower flanges 18c that connect to each of the webs 18b.

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 near the front end (reference symbol 18A), a position near the rear end (reference symbol 18B), and a middle position in the fore-aft direction (reference symbol 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.

The base flange 18a of the wheel receiving member 18 is a rectangular plate, and the wheel receiving member 18 is attached to the frame body 11 with the longitudinal direction of the rectangle aligned with the left-right direction. A pair of webs 18b are formed on the lower surface of the base flange 18a at positions near the ends of both side edges along the longitudinal direction (in other words, the span direction on the underside of the platform of the dolly 10), protruding/extending downward while being spaced apart. That is, the pair of webs 18b are formed on the lower surface of the base flange 18a parallel to and facing each other along the longitudinal direction of the base flange 18a. At the lower end of each of the pair of webs 18b, a pair of lower flanges 18c are formed that face the base flange 18a across the web 18b. 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.

The wheel receiving member 18 has a web 18b and a lower flange 18c in addition to a base flange 18a, so it has a larger section modulus and therefore greater strength than a simple flat plate material with only the base flange 18a.

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-aft direction, is disposed between the two middle left-right frames 13a that constitute the lattice frame 13 in the fore-aft direction. 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 member spanning the pair of left and right side frame members 12c, and the middle wheel receiving member 18C is arranged as a separate member at a position near each of the pair of left and right side frame members 12c (i.e., the middle wheel receiving member 18C is arranged as a pair of left and right members).

The upper surface of the frame body 11, which is rectangular in plan view, is not blocked by the load receiving plate 16, but is blocked by the front wheel receiving member 18A at a position one step lower than the top surface of the load receiving plate 16, and the portion toward the rear end is blocked by the rear wheel receiving member 18B at a position one step lower than the top 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 the middle wheel receiving member 18C at a position one step lower than the top surface of the load receiving plate 16.

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 created between the frame body 11 and the wheel receiving member 18, and these gaps are used as handles 19. The handle gaps 19 are used as handles by inserting the hand when carrying the trolley 10. By providing the handle gaps 19, the trolley 10 can be easily carried even if the dimensions of the frame body 11 are large, for example.

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 it is preferable to form it as a single piece from the viewpoint of ensuring particularly good strength. The wheel receiving member 18 is formed, for example, by die-casting using an aluminum alloy as the material.

Wheels 17A that can rotate around an up-down axis are attached to the left and right ends of the underside of the base flange 18a of each of the wheel receiving members 18A and 18B that are attached to the front and rear ends of the frame body 11. In addition, fixed wheels 17B that are fixed in the front-rear direction are attached to the underside of the base flange 18a of each of the pair of left and right wheel receiving members 18C that are attached to the middle position in the front-rear direction of the frame body 11. The wheels 17 are fixed to the wheel receiving member 18 by a fastening member such as a screw 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 a through hole 18d provided in the base flange 18a of the wheel receiving member 18 in such a manner that the top plate (mounting base) is sandwiched between a pair of webs 18b and a pair of lower flanges 18c.

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 fore-aft direction. It is optional whether swivel wheels (casters) or fixed wheels are attached as the wheels 17 at each position. In addition, it is also possible not to attach wheel receiving members 18 or wheels 17 to intermediate positions in the fore-aft direction of the frame body 11.

The upper surface of the frame body 11, which is rectangular in plan view, includes the front and rear end portions that are not covered 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, which are covered by the wheel receiving members 18 at a position 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 on the upper surface of the load receiving plate 16 and have the upper surface of the wheel receiving members 18 as their base, preventing the stacked carts 10 from collapsing.

The trolley hoist 1 according to this embodiment has a pair of span frame members 21 arranged parallel to each other and spaced apart from each other to support the platform of the trolley 10 from below, a pair of connecting frame members 22 arranged parallel to each other and spaced apart from each other to connect the span frame members 21, and hooks 3 attached to both ends of each span frame member 21 to which fasteners of a lifting machine for suspending and raising and lowering the trolley 10 are attached. In this embodiment, the platform of the trolley 10 is composed of a frame body 11 and a load receiving plate 16.

The trolley support part 2 of the trolley hoist 1 is disposed on the underside of the frame body 11 of the trolley 10 to support the trolley 10, and is made up of square pipe materials assembled and joined together to form a frame (picture frame).

The bogie support section 2 is formed by connecting four square pipes to form a square frame (picture frame) in plan view. Specifically, a pair of front and rear span frame members 21, each arranged along the longitudinal direction (i.e., 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 longitudinal direction, and a pair of left and right connecting frame members 22, each arranged along the longitudinal direction (i.e., front-back direction) of the side frame member 12c of the bogie 10 and spaced apart from each other in the longitudinal direction to connect the left ends of the pair of front and rear span frame members 21 and connect the right ends of the pair of front and rear span frame members 21, are assembled to form a square frame (picture frame) in plan view. The span frame members 21 and the connecting frame members 22 of the bogie support section 2 are joined by welding or fixed to each other by fastening members such as screws, for example.

The connecting frame member 22 has the function of fixing the distance between the pair of front and rear span frame members 21, and it is not essential that there are two of them. In other words, it is preferable to have two connecting frame members 22 in order to ensure good strength as the trolley support part 2 and to be able to place them without being affected by the structure on the underside of the loading platform of the trolley 10 by arranging one on each of the left and right side edges of the trolley 10, but it is also possible to have only one connecting frame member 22 in the center on the left and right.

The material of each frame member (square pipe material) that constitutes the trolley support part 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 trolley support part 2, for example, steel square pipe material is used.

It is preferable that the distance between the pair of front and rear span frame members 21 of the trolley support section 2 is adjusted to a dimension where the span frame member 21 abuts against the wheel receiving member 18. Specifically, it is preferable that the distance between the span frame members 21 is adjusted so that the front surface (side edge) of the front span frame member 21 of the pair abuts against the rear surface of the front wheel receiving member 18A (specifically, the rear surface, side edge of the base flange 18a and the lower flange 18c), and the rear surface (side edge) of the rear span frame member 21 of the pair abuts against the front surface of the rear wheel receiving member 18B (specifically, the front surface, side edge of the base flange 18a and the lower flange 18c). This prevents the trolley hoist 1 from shifting/loosing in the front-rear direction relative to the trolley 10, improves the stability of the assembly of the trolley hoist 1 to the trolley 10, and ultimately improves safety when raising and lowering materials, etc., by the trolley 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 to form unevenness on the underside of the platform of the dolly 10 (specifically, the frame body 11). Also, the rear surface (side edge) of the front span frame member 21 abuts against the front surface of a member or structure sandwiched in the front-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 abuts against the rear surface of the member or structure.

The hook portion 3 of the trolley hoist 1 is for hooking 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 for engaging a load fastening device (e.g., a lashing belt, a load fastening belt) for fastening and securing materials and luggage loaded on the load receiving plate 16 of the trolley 10 to prevent them from collapsing, and is attached to the trolley support portion 2.

A total of four hooks 3 are provided, each connected to the left and right ends of a pair of span frame members 21 at the front and rear of the trolley support part 2.

The hook 3 is for hanging a hook of a crane or the like, and is formed by bending a bar 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 when viewed from the side, and is attached to the span frame member 21 with the left or right end of the span frame member 21 sandwiched between the lower end opening. The hook 3 is joined to the span frame member 21 by, for example, welding or fixed with a fastening member such as a screw.

The gap 33 inside the curved portion 31 of the hook portion 3 is used as a space for passing a hook when hanging a hook of a crane or the like on the curved portion 31.

The engaging portion 4 is for engaging a cargo fastener for fastening and fixing materials 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. 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 hook portion 3, with the curved portion of the U-shape facing outward in the left-right direction.

The gap 41 on the inside of the curved portion of the engagement part 4 is used as a space for passing a cargo fastener to fasten and secure materials on the cargo receiving plate 16 to the engagement part 4.

It is preferable that the length of the span frame member 21 of the trolley support section 2 along the left-right direction and the distance between the pair of left and right hooks 3 facing each other in the left-right direction are adjusted to a dimension where the hooks 3 abut against the side frame member 12c of the frame frame 12. Specifically, it is preferable that the length of the span frame member 21 and the distance between the hooks 3 are adjusted so that the surface of each of the pair of left and right hooks 3 that faces the hooks 3 of the other hooks 3 facing each other in the left-right direction abuts against the side (side edge) of the side frame member 12c. This prevents the trolley hoist 1 from shifting/wobbling in the left-right direction relative to the trolley 10, improves the stability of the assembly of the trolley hoist 1 to the trolley 10, and ultimately improves safety when raising and lowering materials, etc., using the trolley 10.

The trolley hoist 1 is preferably fastened to the trolley 10 in a detachable manner by means of a bolt or the like via a connecting fitting (not shown) disposed between the frame body 11 and the span frame member 21, but may not be fastened. In the example shown in the figure, a bolt hole 211 is provided in the span frame member 21, and the trolley hoist 1 is configured to be connected and fixed to the frame body 11 by a bolt 212 passing through this bolt hole 211.

According to the dolly hoisting device 1 and dolly 10 of this embodiment, after materials are transported by the dolly 10, the hooking portion 3 can be used to lift and lower the dolly 10 by a crane or the like to the location where the materials are actually used, reducing the effort and time required to lift and lower materials loaded and transported on the dolly 10. Furthermore, the hooking portion 3 (particularly the engagement portion 4) can be used to fasten and fix the materials on the load receiving plate 16 with a load fastener to prevent them from collapsing, ensuring safety when transporting and lifting materials loaded on the dolly 10.

The trolley hoist 1 and trolley 10 according to this embodiment also have two span frame members 21 that span the underside of the frame body 11 of the trolley 10 in the left-right direction to support the frame body 11, so these two span frame members 21 function as beams supporting both ends, making it possible to improve the strength of the trolley 10 as a whole.

The bogie 10 according to this embodiment has three wheel receiving members 18 that span 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 larger section 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.

Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there are design changes within the scope of the present invention, they are included in the present invention. For example, in the above embodiment, the case where the dolly hoisting device 1 of the present invention is applied to the dolly 10 shown in the figure is described as an example, but the specific configuration of the dolly to which the dolly hoisting device 1 of the present invention can be applied is not limited to the dolly 10 in the above embodiment, and any specific configuration may be used as long as the dolly has a structure equivalent to the frame body 11 and the load receiving plate 16 constituting the loading platform in the dolly 10 as an example shown in the figure, and the dolly support part 2 of the dolly hoisting device 1 can be assembled to the underside of the frame body 11 and the load receiving plate 16. For example, the dolly 10 has six wheels in the above embodiment, but it may also be a dolly with four wheels (in this case, the wheel receiving member 18 may be two). In addition, it may be a dolly that has a structure equivalent to the load receiving plate 16 in the above embodiment but does not have a structure equivalent to the frame body 11 (i.e., a dolly whose loading platform is composed only of the load receiving plate). Even if the structure does not have a frame body 11, the necessary strength can be ensured by the trolley hoisting device 1 and wheel support member 18 depending on the application of the trolley.

In addition, 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-rear direction, and the bridge frame member 21 is arranged along the left-right direction (i.e., arranged along a direction perpendicular to the longitudinal direction of the load receiving plate 16), but the longitudinal direction of the load receiving plate 16 of the trolley 10 may be set to the left-right direction, and the bridge frame member 21 may be arranged along the left-right direction (i.e., arranged along the longitudinal direction of the load receiving plate 16).

In addition, while in the above embodiment, the trolley hoist 1 has the engagement portion 4, the trolley hoist 1 may not have the engagement portion 4. In this case, too, the trolley 10 can be hoisted and lowered by a crane or the like using the hook portion 3. In this case, for example, a cargo fastener (e.g., a lashing belt, a cargo fastening belt) can be passed around from the underside of the frame body 11 and looped around the trolley 10 and the materials on the cargo receiving plate 16 to gather them together, thereby tightening and fixing the materials on the cargo receiving plate 16.

REFERENCE SIGNS LIST 1: Truck hoisting device 2: Truck support portion 21: Span frame member 211: Bolt hole 212: Bolt 22: Connecting frame member 3: Hook portion 31: Curved portion 32: Straight portion 33: Gap 4: Engagement portion 41: Gap 10: Truck 11: Frame body 12: Frame 12a: Front frame member 12b: Rear frame member 12c: Side frame member 13: Lattice frame 13a: Left-right frame 13b: Front-rear frame 14: Corner member 141: Connecting gap portion 142: Insert hole portion 16: Load receiving plate 16a: Front portion 16b: Rear portion 16c: Central portion 17: Wheel 17A: Free wheel 17B: Fixed wheel 18: Wheel receiving member 18A: Front wheel receiving member 18B: Rear wheel receiving member 18C Intermediate wheel receiving member 18a Base flange 18b Web 18c Lower flange 18d Through hole 19 Gap for hand holding

Claims (6)

It is used by attaching it to a trolley.
A pair of span frame members arranged parallel to each other and spaced apart from each other to support the platform of the dolly from below;
A connecting frame member that connects the span frame members to each other;
and a hook portion attached to both ends of each of the span frame members to which a fastener of a lifting machine for lifting and lowering the cart is hung.
A hoisting device for a trolley characterized by the above. The hook portion includes an engagement portion for engaging a load fastener for fastening and fixing materials loaded on the loading platform.
2. The trolley hoisting device according to claim 1 . The side edge of the span frame member abuts against the side edge of a member or structure that forms an uneven surface on the underside of the loading platform.
2. The trolley hoisting device according to claim 1 . The trolley hoisting device according to claim 1 is provided.
A trolley characterized by: A wheel receiving member is disposed across the underside of the loading platform and to which wheels are attached,
The wheel receiving member is
A base flange formed in a rectangular plate shape;
a pair of webs projecting downward and spaced apart from each other from both side edges along the longitudinal direction of the rectangle on the lower surface of the base flange;
a pair of lower flanges connected to the lower ends of the webs and facing the base flanges;
5. The truck according to claim 4. A gap is provided between a frame body constituting a part of the loading platform and the wheel receiving member to form a gap for carrying the vehicle by hand.
6. The truck according to claim 5.