Conveyance dolly

Abstract

To provide a conveyance dolly that can convey longer articles than a load-carrying platform and easily perform an unloading operation on store fixtures.SOLUTION: A conveyance dolly 1 that conveys an article 100 long in one direction includes: a chassis 11; a plurality of casters 12 provided at the chassis 11; a table 51 shorter than the length of the article 100 in the longitudinal direction; a lifting mechanism 13 provided on the chassis 11 and configured to lift up and down the table 51; a frame 52 fixed to the table 51 and longer than the table 51 and longer than a length from an end portion of the article 100 in the longitudinal direction to a position of the center of gravity; and a top plate 53 disposed on the frame 52.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a transport cart for transporting articles. [Background technology]

[0002] Lift trucks with liftable platforms have been known as transport trucks for transporting goods loaded on the platform. These lift trucks raise and lower the platform by operating a lifting mechanism hydraulically or electrically (see, for example, Patent Document 1).

[0003] For example, when transporting goods using such a lift cart, if the goods are larger than the loading platform or are relatively heavy, the goods are loaded onto an empty pallet, the empty pallet is then loaded onto the loading platform, and the empty pallet is then removed from the loading platform at the destination.The goods are then transported using a crane or multiple workers, and stored in furniture or other fixtures. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3237565 Summary of the Invention [Problem to be solved by the invention]

[0005] The operation of loading goods onto a pallet requires the process of placing the pallet on a lift cart and then removing the pallet from the lift cart, as well as the process of placing goods onto the pallet and then removing the goods from the pallet.In addition, when removing goods from the pallet, the goods must be lifted to the height of the fixtures.

[0006] This increases the number of work steps, and because the items are heavy, lifting them is difficult. Furthermore, if the items are weak against impacts, such as quartz glass, there is a risk that they may be dropped and damaged during the lifting process.

[0007] Furthermore, if an item is long, it may not be possible to load it onto a cart. For example, it may be possible to use a cart with a large loading platform, but its use may be limited depending on the layout of the fixtures that will house the items. In particular, since carts are limited to a certain size, it is difficult to select a size that is appropriate for the item or the layout of the fixtures to which the item will be transported.

[0008] Therefore, an object of the present invention is to provide a transport cart that can transport items that are longer than the loading platform and that can easily load items onto fixtures. [Means for solving the problem]

[0009] According to one aspect of the present invention, a transport cart is a transport cart for transporting items that are long in one direction, and comprises a chassis, a plurality of casters provided on the chassis, a table that is shorter than the longitudinal length of the item, a lifting mechanism provided on the chassis for raising and lowering the table, a frame fixed to the table, which is longer than the table and longer than the length from the longitudinal end of the item to the center of gravity, and a top plate provided on the frame. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a transport cart that can transport items that are longer than the loading platform and that can easily load items onto fixtures. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a perspective view showing a configuration of a transport cart according to an embodiment of the present invention; [Figure 2] FIG. [Figure 3] FIG. 2 is a perspective view showing the configuration of the transport cart with some parts omitted. [Figure 4] FIG. [Figure 5] FIG. 2 is a perspective view showing an example of use of the transport cart. [Figure 6] FIG. 2 is a perspective view showing an example of use of the transport cart. [Figure 7] FIG. 2 is a perspective view showing an example of use of the transport cart. [Figure 8] FIG. 2 is a perspective view showing an example of use of the transport cart. [Figure 9] FIG. 10 is a perspective view showing the configuration of a transport cart according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] The configuration of a transport cart 1 according to an embodiment of the present invention will be described below with reference to Figs. 1 to 8. Fig. 1 is a perspective view showing the configuration of a transport cart 1 according to an embodiment of the present invention, and Fig. 2 is a perspective view showing the configuration of the transport cart 1 with the loading platform 14 raised. Fig. 3 is a perspective view showing the configuration of the transport cart 1 with the top plate 53 of the loading platform 14 omitted. Fig. 4 is an exploded perspective view showing the configuration of the transport cart 1. Figs. 5 to 8 are perspective views showing an example of using the transport cart 1 to transport an item 100 to be transported to a fixture 200.

[0013] As shown in FIGS. 1 to 4 and 6, the transport dolly 1 includes a chassis 11, a plurality of casters 12, a lifting mechanism 13, a loading platform 14, a handle 15, and a fixing member 16. As shown in FIG. 5, the transport dolly 1 is configured to be able to load and transport an item 100, which is elongated in one direction, on the loading platform 14. The transport dolly 1 is also configured to be able to lift the loading platform 14 and slide the item 100 on the loading platform 14 so that the loaded item 100 can be unloaded onto a fixture 200 located at a predetermined height. In the following description, the handle 15 side of the transport dolly 1 is defined as the rear side, and front, rear, left, and right are defined. Here, the item 100 is, for example, a product that may be damaged by impact, such as quartz glass, packed in a packaging material that is elongated in one direction, such as a cardboard box that is elongated in one direction, and supported within the cardboard box by cushioning material.

[0014] The chassis 11 includes a chassis main body 21 formed in the shape of a rectangular frame, and an extension chassis 22 fixed integrally to the front end of the chassis main body 21.

[0015] The chassis body 21 is formed, for example, in the shape of a rectangular frame that is long in one direction. The chassis body 21 has the lifting mechanism 13 drivably fixed thereto. A handle 15 is fixed to the rear end of the chassis body 21. Some, for example, two of the plurality of casters 12 are fixed to the underside of the rear end of the chassis body 21. The chassis body 21 has a first side plate 21a that extends in the front-rear direction and is spaced apart from each other in the left-right direction, and a second side plate 21b that extends in the left-right direction and is spaced apart from each other in the front-rear direction.

[0016] The extension chassis 22 is fixed to the front of the chassis main body 21, for example, at the front end side. By being fixed to the front of the chassis main body 21, the extension chassis 22 extends the overall length of the chassis 11. The extension chassis 22 is fixed to the chassis main body 21 by welding. For example, the extension chassis 22 is formed in a rectangular frame shape and extends to the front of the chassis main body 21. The width of the tip of the extension chassis 22 is larger than the width of the chassis main body 21 in the left-right direction. In addition, casters 12 are fixed to the left and right ends of the tip of the extension chassis 22, respectively. As a result, the left-right distance between the two casters 12 fixed to the front end of the extension chassis 22 is larger than the left-right distance between the two casters 12 fixed to the rear end of the chassis main body 21. Note that the left-right distance between the two casters 12 at the front end of the extension chassis 22 may be the same as the left-right distance between the two casters 12 at the rear end of the chassis main body 21.

[0017] As a specific example, the extended chassis 22 includes a pair of first chassis 22a extending in the front-rear direction, a second chassis 22b extending in the left-right direction and connecting the pair of first chassis 22a at the front ends of the first chassis 22a, a third chassis 22c provided on the second chassis 22b and positioned between the pair of first chassis 22a and extending in the front-rear direction, a pair of fourth chassis 22d provided on each first frame 52a and extending in the left-right direction, and a pair of fifth chassis 22e connecting the second chassis 22b and each fourth chassis 22d. The extended chassis 22 also includes, for example, a pair of seat plates 22f to which the casters 12 can be fixed, and a pair of reinforcing plates 22g for reinforcement.

[0018] The first chassis 22a is formed from a square steel pipe. The length of the first chassis 22a is longer than the extension length of the chassis main body 21. The inner surface of the rear end side of the first chassis 22a is welded to the outer surface of the first side plate 21a of the chassis main body 21. The length of the first chassis 22a may be set appropriately as long as it can ensure the desired strength when welded to the chassis main body 21. The pair of first chassis 22a are arranged side by side in the left-right direction with a predetermined gap between them, specifically, the same as the distance between the outer surfaces of the pair of first side plates 21a of the chassis main body 21.

[0019] The second chassis 22b is formed of a square steel pipe. In this embodiment, one second chassis 22b is provided. The second chassis 22b is fixed to the front ends of the pair of first chassis 22a by welding or the like. The second chassis 22b extends in the left-right direction, and its longitudinal length is greater than the distance between the pair of first chassis 22a. When fixed to the pair of first chassis 22a, both ends extend in the left-right direction. Note that two second chassis 22b may be provided. In this case, one second chassis 22b may be fixed to the front ends of the pair of first chassis 22a, and the other second chassis 22b may be welded to the second side plate 21b that constitutes the front surface of the chassis main body 21.

[0020] The third chassis 22c is formed of a square steel pipe. In this embodiment, one third chassis 22c is provided. The third chassis 22c is provided at a middle position in the left-right direction between the pair of first chassis 22a. The front end of the third chassis 22c is welded to the second chassis 22b, and the rear end is welded to the front of the second side plate 21b of the chassis main body 21.

[0021] The fourth chassis 22d is formed from a square steel pipe. The fourth chassis 22d is welded to the front outer surfaces of the pair of first chassis 22a along the left-right direction. The fourth chassis 22d is disposed opposite the second chassis 22b with a predetermined gap in the front-rear direction. The outer end of the second chassis 22b and the outer end of the fourth chassis 22d are located at the same position in the left-right direction.

[0022] The fifth chassis 22e is formed of a square steel pipe. One of the pair of fifth chassis 22e has one end fixed to one left-right end of the second chassis 22b and the other end fixed to the fourth chassis 22d provided on one side in the left-right direction. The other of the pair of fifth chassis 22e has one end fixed to the other left-right end of the second chassis 22b and the other end fixed to the fourth chassis 22d provided on the other side in the left-right direction. In other words, the pair of fifth chassis 22e connects the second chassis 22b and the fourth chassis 22d on the left and right sides in the left-right direction.

[0023] The seat plate 22f is made of a steel plate. The seat plate 22f is formed in a rectangular shape and is formed so that the casters 12 can be fixed thereto. The seat plate 22f is fixed to portions formed on the left and right sides of the front of the extension chassis 22 by, for example, the second chassis 22b, the fourth chassis 22d, and the fifth chassis 22e.

[0024] The reinforcing plate 22g is made of a steel plate. For example, the reinforcing plate 22g is a triangular reinforcing plate member provided at a corner between a side surface of the first chassis 22a and a rear surface of the fourth chassis 22d, and is welded to the first chassis 22a and the fourth chassis 22d to improve the joining strength between the first chassis 22a and the fourth chassis 22d.

[0025] For example, four casters 12 are fixed to the underside of the chassis 11. As a specific example, the plurality of casters 12 include two swivel wheels 31 provided on the underside of the rear end of the chassis main body 21, and two switchable casters 32 that can be switched between swivel wheels and fixed wheels provided on the underside of the tip end of the extension chassis 22. For example, the casters 12 are fixed to the chassis 11 by fastening members 33 such as bolts.

[0026] The lifting mechanism 13 is, for example, a jack unit. The lifting mechanism 13 includes multiple arms 41, a hydraulic pump that increases hydraulic pressure when operated, a cylinder whose piston is moved by the hydraulic pump, a mechanism that raises and lowers the multiple arms 41 by driving the cylinder, a speed reduction mechanism such as a slow valve mechanism or a lowering operation dial that dampens the descent speed of the multiple arms 41 when they are lowered, a hydraulic circuit including piping and valves for hydraulic oil, and an operating body such as a foot pedal that operates the hydraulic pump and the speed reduction mechanism. The multiple arms 41 form, for example, a pantograph. The lower ends of the multiple arms 41 are connected to the chassis main body 21, and the upper ends of the multiple arms 41 are connected to the loading platform 14. In the lifting mechanism 13, for example, when the operating body is operated, the hydraulic pressure is increased by the hydraulic pump, causing the piston of the cylinder to move, and by operating the arms 41, the arms 41 are extended upward, thereby raising the loading platform 14. When the lifting mechanism 13 operates the operating body to reduce the hydraulic pressure while the arm 41 is extended upward, the piston of the cylinder becomes movable, and the arm 41 expands and contracts due to the weight of the arm 41 and the weight of the loading platform 14, lowering the loading platform.

[0027] The loading platform 14 includes a table 51, a frame 52, and a top plate 53. The loading platform 14 is formed, for example, by fixing the frame 52 to the table 51 by welding or the like, and fixing the top plate 53 to the frame 52 by welding or fastening with fastening members such as bolts.

[0028] The table 51 is formed in a rectangular shape. A plurality of arms 41 are connected to the underside of the table 51, and the table 51 is raised and lowered by driving the arms 41. The table 51 is formed in a rectangular shape whose length in the front-to-rear direction is longer than its length in the left-to-right direction. The table 51 includes a rectangular top plate 51a and four side plates 51b extending in the up-down direction and provided on each of the four sides of the outer periphery of the top plate 51a.

[0029] The frame 52 is formed in the shape of a plurality of rectangular frames extending in the front-rear and left-right directions. The frame 52 is formed, for example, by welding together a plurality of square steel pipes and steel plates. For example, the frame 52 includes a pair of first frames 52a extending in the front-rear direction, a plurality of second frames 52b extending in the left-right direction and connecting the pair of first frames 52a at the front sides of the first frames 52a, a plurality of third frames 52c extending in the front-rear direction and connecting adjacent second frames 52b, a plurality of fourth frames 52d provided on each first frame 52a and extending in the left-right direction, and a pair of fifth frames 52e provided on the pair of first frames 52a.

[0030] The first frame 52a is formed from a square steel pipe. The length of the first frame 52a is longer than the length of the table 51 in the longitudinal direction (front-rear direction). The length of the first frame 52a is also longer than the length from the end of the load item 100 on the handle 15 side in the longitudinal direction to the center of gravity. The pair of first frames 52a are arranged side by side in the left-right direction with a predetermined gap between them. The left-right gap between the pair of first frames 52a is longer than the length of the table 51 in the short side direction (left-right direction).

[0031] The second frame 52b is formed from a square steel pipe. Both ends of the second frame 52b are fixed to the opposing surfaces of the pair of first frames 52a. In this embodiment, two second frames 52b are provided. One of the second frames 52b is provided at the tip of the pair of first frames 52a. The other second frame 52b is provided rearward of the one second frame 52b. For example, the other second frame 52b is provided in a position forward from the rear end of the first frame 52a in the longitudinal direction by the length of the table 51 in the longitudinal direction, and is fixed to the side plate 51b that forms the front surface of the table 51.

[0032] The third frame 52c is formed from a square steel pipe. In this embodiment, two third frames 52c are provided. The pair of third frames 52c are arranged at a predetermined interval in the left-right direction and at a predetermined interval from each of the first frames 52a. Both ends of each third frame 52c are fixed to the pair of second frames 52b.

[0033] The fourth frames 52d are formed from square steel pipes. In this embodiment, four fourth frames 52d are provided, two for each first frame 52a. For example, two fourth frames 52d are fixed to each first frame 52a in a line in the front-rear direction. One end of each fourth frame 52d is fixed to the inner surface of the first frame 52a in the left-right direction, and the other end is fixed to the outer surface of the left-right side plate 51b of the table 51.

[0034] The fifth frame 52e is made of a steel plate. The fifth frame 52e is formed in the shape of a rectangular plate that is long in one direction. The longitudinal length of the fifth frame 52e is, for example, the same as the longitudinal length of the first frame 52a. The fifth frame 52e is fixed to the outer surface of each of the first frames 52a. For example, the fifth frame 52e is formed so that the fixing member 16 can be fixed thereto.

[0035] The top plate 53 is formed in a flat plate shape, with the upper end formed into a smooth surface. The top plate 53 is formed from a material or has a surface shape with a friction coefficient that allows the article 100 to slide easily on the upper surface. The top plate 53 is formed in a rectangular shape that is long in one direction (front-to-back direction). The length of the top plate 53 in the longitudinal direction is longer than the distance from one end of the article 100 to the center of gravity in the longitudinal direction.

[0036] The top plate 53 is fixed to the frame 52 by, for example, fastening members such as bolts or by welding. As a specific example, the top plate 53 is detachably fixed to a screw hole formed in the upper surface of the frame 52 by a fastening member such as a bolt. The fastening members or welds that secure the top plate 53 to the frame 52 are configured to allow the article 100 to slide on the top plate 53 and not hinder the movement of the article 100. As an example, the fastening members that secure the top plate 53 are configured to have a shape or attachment method that does not protrude from the upper surface of the top plate 53 when the top plate 53 is secured to the frame 52, or that does not form a step that forms a side surface perpendicular to the upper surface of the top plate 53. For example, one or more of various techniques can be applied, such as forming a counterbore in the hole in the top plate 53 through which the fastening member is inserted, or using a flat screw so that the head of the fastening member does not protrude above the top plate 53, so that the fastening member does not hinder the sliding movement of the article 100.

[0037] The handle 15 is formed in a shape that allows the transport cart 1 to be pushed or pulled. For example, the handle 15 includes a pair of vertical members extending upward and a horizontal member that is connected to the pair of vertical members at the upper end. The shape, size, and angle of the handle 15 are set as appropriate.

[0038] As shown in FIG. 6, the fixing member 16 holds the article 100 and fixes the article 100 on the top plate 53. For example, the fixing member 16 is formed in a belt-like shape, and both ends thereof can be fixed to the pair of fifth frames 52e. For example, the fixing member 16 includes a winding device 16a, a belt-like belt 16b that can be wound, fixed, and fed by the winding device 16a, a first fixing means for fixing the winding device 16a, and a second fixing means provided at the tip of the belt 16b for fixing the belt 16b. For example, such a fixing member 16 is a reel lock. Note that in FIG. 6, a part of the belt 16b, the first fixing means, and the second fixing means are omitted.

[0039] For example, the first fixing means is a magnet that can selectively fix the reeling device 16a to one of the fifth frames 52e. The second fixing means is a hook or the like that can hook the tip of the belt 16b onto the lower end of the other fifth frame 52e to fix it. The fixing member 16, for example, fixes the reeling device 16a to one of the fifth frames 52e with the first fixing means, and then, with the belt 16b routed around the side and top surfaces of the article 100 on the top plate 53, fixes the article 100 to the other fifth frame 52e with the second fixing means, thereby restraining the article 100 and fixing it to the top plate 53.

[0040] Of the transport dolly 1 configured in this manner, the chassis body 21 of the chassis 11, the two swivel wheels 31 that serve as rear wheels among the multiple casters 12, the lifting mechanism 13, the table 51 of the loading platform 14, and the handle 15 are, for example, those of a commonly available lift dolly 2. The transport dolly 1 is formed by fixing the extension chassis 22, the two switchable casters 32, the frame 52, and the top plate 53 to the lift dolly 2 by welding or fastening with fastening members such as bolts and screws.

[0041] Next, an example of a method for transporting the article 100 to the fixture 200 using the transport cart 1 will be described with reference to FIGS.

[0042] First, as shown in FIG. 5, the article 100 is placed on the platform 14 when it is at its lowest position, and the fixing member 16 is used to restrain and fix the article 100 to the platform 14. In this state, the transport cart 1 is transported to the fixture 200. When the transport cart 1 is transported in front of the fixture 200, the front of the transport cart 1 is positioned opposite the fixture 200, and the article 100 is positioned adjacent to the fixture 200. Then, as shown in FIG. 6, the lifting mechanism 13 is operated to raise the platform 14, and the upper surface of the top plate 53 of the platform 14 is set to the same height as or slightly higher than the placement surface of the fixture 200 on which the article 100 is placed. The transport cart 1 is then moved forward so that part of the article 100 is positioned on the placement surface of the fixture 200.

[0043] Next, the fixing member 16 is operated to release the article 100 from the loading platform 14, and the article 100 is slid toward the fixture 200 as shown in Fig. 7, and the article 100 is placed on the fixture 200 as shown in Fig. 8. By following these steps, the transport cart 1 is used to perform a loading operation in which the article 100 is loaded onto the fixture 200.

[0044] Furthermore, an example of the unloading of the item 100 can be performed by, for example, sliding the item 100 from the fixture 200 to the loading platform 14, in the reverse process of the loading operation. As a specific example, the unloading operation begins by transporting the transport cart 1 to the fixture 200 on which the item 100 to be unloaded is placed. At this time, the front of the transport cart 1 faces the fixture 200, and the item 100 is positioned adjacent to the fixture 200. Then, the lifting mechanism 13 is operated to raise the loading platform 14, and the height position of the upper surface of the top plate 53 of the loading platform 14 is set to the same height as or slightly lower than the mounting surface of the fixture 200 on which the item 100 to be unloaded is placed. Then, the item 100 is slid across the mounting surface of the fixture 200, and the item 100 is placed on the top plate 53 of the loading platform 14. Next, the article 100 placed on the loading platform 14 is restrained using the fixing member 16, and the article 100 is fixed to the loading platform 14. At this time, since the length of the top plate 53 in the front-to-rear direction is shorter than the length of the article 100, the article 100 is placed on the loading surface of the fixture 200. Therefore, the lifting mechanism 13 is operated to position the top plate 53 higher than the loading surface of the fixture 200, and then the transport cart 1 is moved to remove the article 100 from the fixture 200. Next, the lifting mechanism 13 is operated to lower the loading platform 14 to its lowest position, and the unloaded article 100 is transported to its destination. In this manner, the unloading operation of the article 100 is performed.

[0045] The transport cart 1 configured in this manner is formed by fixing the extension chassis 22, two switching casters 32, frame 52, and top plate 53 to a commonly available lift cart 2 by welding or fastening with fastening members such as bolts and screws. Therefore, the shape and size of the extension chassis 22, the frame 52, and the top plate 53 can be set according to the shape and center of gravity of the item 100 and the arrangement of the fixtures 200. In particular, since the sizes of commonly available (commercially available) carts are somewhat determined by standards and applications, there are limitations depending on the item 100 and the fixtures 200. However, the transport cart 1 can be adjusted to a size suitable for use by using the extension chassis 22 and frame 52 on a lift cart 2 that is smaller than the size capable of transporting the item 100, and therefore can be shaped appropriately depending on the usage situation.

[0046] Furthermore, by making the length of the top plate 53 (frame 52) longer in the front-to-rear direction than the length from one end (rear end) of the article 100 to the center of gravity, it is possible to place an article 100 that is larger in the longitudinal direction (front-to-rear direction) than the loading platform 14. Furthermore, since the longitudinal dimension of the loading platform 14 can be made smaller than the longitudinal dimension of the article 100, the size of the transport cart 1 can be made as small as possible. This makes it easier to handle, and even when multiple pieces of furniture 200 are arranged and the transport cart 1 is transported between the pieces of furniture 200, it is possible to reduce restrictions on the transport cart 1 during transportation.

[0047] Furthermore, by configuring the top plate 53 so that the article 100 can slide, even if the article 100 is heavy, it can be easily placed on the placement surface of the fixture 200. Furthermore, as long as the top plate 53 is configured to be higher than the placement surface of the fixture 200, various mechanisms can be applied to the lifting mechanism 13. Therefore, the transport cart 1 can easily lift the article 100 onto the placement surface of the fixture 200, which improves the workability of the lifting operation.

[0048] Furthermore, by arranging the arm 41 of the lifting mechanism 13 in front of the chassis main body 21, when the extension chassis 22 is provided in front of the chassis main body 21, the arm 41 is arranged on the central side of the chassis 11. Therefore, the loading platform 14 is supported on the central side in the fore-and-aft direction of the loading platform 14, and the article 100 can be held stably.

[0049] Furthermore, by providing the fifth frame 52e on the frame 52, the loading platform 14 can fix the fixing member 16, thereby making it possible to fix the article 100 to the loading platform 14. The shape and material of the frame 52 can be set as appropriate as long as it is possible to fix the fixing member 16. For example, if the fixing member 16 has a configuration that can be mechanically fixed, such as a hook or a carabiner, the fifth frame 52e may be, for example, a rod-shaped bar or an annular ring.

[0050] Furthermore, the transport cart 1 has a plurality of casters 12 arranged in the front-rear direction, and the front plurality of casters 12 are switchable casters 32 that can be switched between swivel wheels and fixed wheels. As a result, the front switchable casters 32 can be switched to fixed wheels, which improves travelling performance, when the transport cart 1 is moving, and to swivel wheels, which make it easier to handle, when loading onto the fixtures 200. This improves the transport cart 1's mobility and maneuverability, resulting in high usability. In particular, when the item 100 is relatively heavy, this prevents the transport cart 1 from shaking during movement and allows for tight maneuverability during maneuvering, preventing the item 100 from colliding with the fixtures 200, etc., even when it comes off the loading platform 14. Therefore, even if the item 100 is a fragile item, it can be transported safely.

[0051] Furthermore, the loading platform 14 has the frame 52 fixed to the side and front of the table 51, and the upper surface of the frame 52 and the upper surface of the top plate 51a of the table 51 are at the same height. This allows the frame 52 to be firmly fixed to the table 51, and the top plate 53 to be supported by the upper surfaces of the table 51 and the frame 52. This increases the area supporting the top plate 53, preventing the top plate 53 from bending and allowing the top plate 53 to be stably held. Therefore, the loading platform 14 allows the article 100 to be stably placed on the top plate 53, and also allows sliding movement.

[0052] As described above, the transport cart 1 according to the embodiment of the present invention can transport an article (transportation object) 100 that is longer than the loading platform 14, and can easily load the article onto the fixtures 200.

[0053] The present invention is not limited to the above-described embodiment. For example, in the above-described example, the chassis 11 has an extension chassis 22 provided in front of the chassis main body 21, the first chassis 22a and the third chassis 22c fixed to the chassis main body 21, and a pair of seat plates 22f extended laterally from only the tip of the extension chassis 22. Front wheels, i.e., switchable casters 32, are fixed to the seat plates 22f, and rear wheels, i.e., swivel wheels 31, are provided on the chassis main body 21. However, the chassis 11 is not limited to this configuration. The transporter cart 1 of the above-described embodiment and a transporter cart 1 of another embodiment, in which the shape of the chassis 11 is different, will be described using FIG. 9. The transporter cart 1 of the other embodiment has the same configuration as the transporter cart 1 of the above-described embodiment except for the configuration of the extension chassis 22 of the chassis 11. Therefore, detailed description of the configuration other than the extension chassis 22 will be omitted.

[0054] The extension chassis 22 includes a plurality of second chassis 22b, for example, a pair thereof, extending in the left-right direction, a plurality of third chassis 22c, for example, three third chassis 22c, extending in the front-rear direction and disposed between the pair of second chassis 22b, a pair of fifth chassis 22e connected to the pair of second chassis 22b and extending to the rear end side of the chassis main body 21, and multiple pairs of sixth chassis 22h connecting the rear end side of the pair of fifth chassis 22e to the chassis main body 21. The extension chassis 22 also includes, for example, two pairs of seat plates 22f to which the casters 12 can be fixed.

[0055] In this way, the extension chassis 22 extends the front of the chassis main body 21 using a pair of second chassis 22b, and extends the left-right width of the chassis main body 21 using a pair of fifth chassis 22e connected to the chassis main body 21 by multiple pairs of sixth chassis 22h.

[0056] Furthermore, when using such a chassis 11, the multiple casters 12 that serve as the front and rear wheels can be mounted on seat plates 22f, one pair in front of the extended chassis 22 and one pair in the rear, thereby widening the left-right spacing between the two pairs of casters 12 that serve as the front and rear wheels.

[0057] In addition, in this example of the extended chassis 22, one of the second chassis 22b and the multiple pairs of sixth chassis 22h are welded to the chassis main body 21. However, as long as the extended chassis 22 can be fixed to the chassis main body 21 with desired strength and can extend the dimensions of the chassis main body 21, the shape, welding position, etc. can be set appropriately.

[0058] That is, the present invention is not limited to the above-described embodiments, and various modifications can be made in the implementation stage without departing from the spirit of the invention. Furthermore, the embodiments may be implemented in appropriate combinations, in which case the combined effects can be obtained. Furthermore, the above-described embodiments include various inventions, and various inventions can be extracted by combining selected elements from the disclosed elements. For example, if the problem can be solved and the desired effect can be obtained even if some elements are deleted from all elements shown in the embodiments, the configuration from which these elements are deleted can be extracted as an invention. [Explanation of symbols]

[0059] 1...transport cart, 2...lift cart, 11...chassis, 12...caster, 13...lifting mechanism, 14...loading platform, 15...handle, 16...fixing member, 16a...winding device, 16b...belt, 21...chassis body, 21a...first side plate, 21b...second side plate, 22...extension chassis, 22a...first chassis, 22b...second chassis, 22c...third chassis, 22d...fourth chassis, 22e... Fifth chassis, 22f...seat plate, 22g...reinforcement plate, 31...swivel wheel, 32...switchable caster, 33...fastening member, 41...arm, 51...table, 51a...top plate, 51b...side plate, 52...frame, 52a...first frame, 52b...second frame, 52c...third frame, 52d...fourth frame, 52e...fifth frame, 53...top plate, 100...item (object to be transported), 200...fixtures.

Claims

1. A transport cart for transporting long items in one direction, A chassis, A plurality of casters provided on the chassis; a table that is shorter than the longitudinal length of the article; a lifting mechanism provided on the chassis for lifting and lowering the table; a frame fixed to the table, the frame being longer than the table and longer than the length from an end of the longitudinal direction of the object to a center of gravity position; a top plate provided on the frame; A transport cart equipped with:

2. the chassis includes a rectangular frame-shaped chassis main body and an extension chassis fixed to the front of the chassis main body; The transporting cart according to claim 1 , wherein a plurality of the casters are provided on the chassis main body and a plurality of the casters are provided on the extension chassis.

3. The transporting dolly according to claim 2 , wherein the plurality of casters provided on the extension chassis are switchable between swivel wheels and fixed wheels.

4. the lifting mechanism has an arm that lifts and lowers the table, The transporting cart according to claim 2 , wherein the arm is provided on a central side of the chassis in the front-rear direction.

5. The frame is fixed to the sides and front of the table, The transport cart according to claim 1 , wherein the upper surface of the frame and the upper surface of the table are at the same height.

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