Rollers for transporting heavy objects

Abstract

This invention provides a roller for transporting heavy loads that can move heavy objects without them falling off, even when using various sizes of profiles as rails. [Solution] A heavy-duty roller 10 used to transport heavy objects using a flat-topped profile as a rail, comprising a plate-shaped main frame 11 and a plurality of tires 12 provided on the main frame, the main frame having female screw portions 11a at its four corners to which guide members 17 can be attached to prevent them from falling off the rail, and further comprising detachable additional frames 21 on both sides of the main frame, the additional frames having the same thickness as the main frame and having a plurality of female screw portions 21a to which guide members can be attached, the guide member comprising a rod-shaped metal fitting 17a and a cushion member 17c that contacts the side of the rail, the rod-shaped metal fitting having a male screw portion 17d that can be screwed into the female screw portion at one end, and the guide member is attached by screwing the male screw portion into one of the female screw portions.

Description

[Technical Field]

[0001] The present invention relates to a heavy load transporting roller used for transporting heavy objects such as heavy machinery to factories and the like, and particularly relates to a heavy load transporting roller used when a profile such as H-shaped steel is used as a rail. [Background Art]

[0002] When heavy loads need to be transported, such as when installing heavy machinery in a factory, heavy load transporting rollers are used. Figure 5 is a diagram showing a general transportation situation of heavy loads. Outside the factory 60, an iron plate 30 is laid on a roadbed formed by stacking blocks 40 and the like, and a heavy load transporting roller 100 carrying a heavy load 50 is moved on the iron plate. The general heavy load transporting roller 100 used herein has tires mounted on a frame.

[0003] Figure 6 shows a conventional heavy load transporting roller described in Patent Document 1, wherein (a) is a perspective view and (b) is a side view. The heavy load transporting roller 100 is provided with an opening 91d penetrating through a main body frame 91, and a tire 92 is provided in the opening 91d. With the heavy load transporting roller 100 having such a structure, most of the tire 92 is accommodated inside the main body frame 91, so the overall height can be kept low. A handle mounting portion 95 is provided at an end in the traveling direction, and a handle can be mounted on the heavy load transporting roller 100 to easily move the heavy load in the front-rear direction. In addition, in order to facilitate direction change while the heavy load is placed on the roller, a disk-shaped top plate 93 rotatable around a center axis may be provided on the upper surface of the main body frame 91.

[0004] When transporting heavy objects, in addition to laying steel plates as a roadbed, methods are sometimes employed in which H-beams or other structural members are used as rails, and rollers carrying the heavy objects are moved along them. However, in this case, since the rail width is not wide, measures are needed to prevent the rollers used for transporting heavy objects from falling off the rails. Also, depending on the weight of the heavy object and the conditions of the installation site, the type and size of the structural members may be changed, so it is desirable to have heavy-duty transport rollers that can be adapted to several types of structural members. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Utility Model Registration No. 3251923 [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] In view of these circumstances, the present invention aims to provide a roller for transporting heavy objects that can move without falling off the rail when an shaped material is used as a rail, and that is adaptable to shaped materials of several different sizes. [Means for solving the problem]

[0007] The heavy-duty transport roller of this invention is used to transport heavy objects using a shaped material as a rail, and comprises a plate-shaped main frame and a plurality of tires provided on the main frame, with female screw portions at the four corners of the main frame to which guide members can be attached to prevent them from falling off the rail, and further comprises detachable additional frames on both sides of the main frame, the additional frames having the same thickness as the main frame and having a plurality of female screw portions to which guide members can be attached, the guide member comprising a rod-shaped metal fitting and a cushion member that contacts the side of the rail, with a male screw portion that can be screwed into the female screw portion at one end of the rod-shaped metal fitting, and the guide member is attached by screwing the male screw portion into one of the female screw portions.

[0008] Furthermore, it is preferable to have through holes that penetrate the side of the additional frame and mounting holes with internal threads on the side of the main frame, so that the additional frame can be attached to the main frame by screwing mounting bolts through the through holes into the mounting holes.

[0009] Furthermore, the structural members should preferably be aluminum square pipes or H-beams. [Effects of the Invention]

[0010] The present invention provides a roller for transporting heavy objects that can be loaded and moved without falling off when using shaped materials as rails. Furthermore, the roller is designed to accommodate various sizes of shaped materials, with adjustable size and guide member mounting positions. [Brief explanation of the drawing]

[0011] [Figure 1] This diagram shows rollers for transporting heavy objects installed on H-shaped steel rails. [Figure 2] This diagram illustrates the process of attaching an additional frame to the main frame. [Figure 3] A roller for transporting heavy objects with an additional frame attached, where (a) is a top view and (b) is a side view. [Figure 4] This is a perspective view showing a rail made of an aluminum square pipe profile, with the position of the guide member being changed in (a) and (b). [Figure 5] This is a diagram illustrating typical situations for transporting heavy objects. [Figure 6] This is a conventional roller for transporting heavy objects, where (a) is a perspective view and (b) is a side view. [Modes for carrying out the invention]

[0012] This invention relates to a roller for transporting heavy objects, which is used to transport heavy objects along a rail made of a profiled material without them falling off, and is adaptable to profiles of various sizes. Here, a profiled material is a long member with a uniform cross-sectional shape, and in particular, since it is used as a rail in this invention, the top surface is flat so that the roller for transporting heavy objects can run over it. Specifically, this includes H-shaped steel, square steel pipes, and aluminum square pipes with ribs inside. Embodiments of this invention will be described below with reference to the attached drawings.

[0013] Figure 1 shows a heavy-duty roller installed on an H-shaped steel rail. The heavy-duty roller 10 has a basic structure consisting of a plate-shaped main frame 11 and multiple tires 12 attached to openings in the main frame 11. Furthermore, a disc-shaped top plate 13 that can rotate around its central axis may be provided on the upper central part of the main frame 11, and a handle mounting part 15 is provided at the end of the main frame 11. When moving the heavy-duty roller 10, a handle is attached to the handle mounting part 15, and the heavy object is transported by pushing or pulling the handle. The top plate 13 consists of a disc-shaped loading part and a cylindrical shaft part at its center, but it may not be used if not necessary.

[0014] The main frame 11 consists of a thick, plate-shaped metal member with an opening, and its outer shape is roughly rectangular, with a handle mounting section 15 provided on the outside. The main frame 11 has an opening for attaching a tire 12, and most of the tire 12 is housed within this opening, with the lower side of the tire 12 protruding outwards from the opening and making contact with the road surface. The tire 12 is basically a urethane tire, and the rotation axis of the tire is provided by connecting the sides of the opening. The amount of protrusion of the tire 12 is determined to be as small as possible in order to reduce the overall height while taking into account the amount of deformation of the tire 12 when a specified weight is loaded, so as not to cause the main frame 11 to come into contact with the road surface or other objects.

[0015] Furthermore, in this invention, a profiled material is used as a rail 30, and a roller 10 for transporting heavy objects is provided that can run on it without falling off. Here, in order to run safely on the rail 30, it is necessary to provide guide members 17 to prevent the roller from falling off the rail 30. Therefore, female threaded portions 11a are provided at the four corners of the main frame 11 for attaching the guide members 17. The guide members 17 here are attached to each female threaded portion 11a and basically consist of a rod-shaped fitting 17a that connects to the female threaded portion 11a, a disc member 17b that presses the rail 30 from below to prevent the roller 10 from coming off the rail 30 while running, and a cushion member 17c that smoothly contacts the flange side of the H-shaped steel and the side of the profiled material that make up the rail 30. The material of the cushion member 17c is not particularly limited and can be made of rubber or resin, and is in a substantially cylindrical shape and is attached to the rod-shaped fitting 17a by passing through it.

[0016] Here, since the female thread portion 11a is threaded on the inside, by making one end of the rod-shaped fitting 17a a male thread portion with threading, it can be screwed into the female thread portion 11a and removed, making it easy to connect the guide member 17 and the main frame 11. The disc member 17b is attached to the other end of the rod-shaped fitting 17a so as to be rotatable around the rod-shaped fitting 17a as an axis. If the rail 30 is made of H-shaped steel, the disc member 17b will press against the upper flange of the H-shaped steel from below. On the other hand, if the rail 30 is made of aluminum square pipe with ribs, the disc member will hit the rail 30 if it is provided, so the disc member is not provided, and the cushion member 17c will contact the side of the rail 30 to prevent the heavy-duty transport roller 10 from falling off. In addition, since the heavy-duty transport roller 10 must run smoothly on the rail 30, it is desirable to have an appropriate gap between the guide member 17 and the rail 30.

[0017] If such a heavy-load transporting roller 10 uses narrow H-shaped steel as the rail 30, attaching the guide member 17 to the main body frame 11 enables loading and transporting heavy loads on the rail 30 without falling off. However, since the profile material used as the rail 30 comes in various shapes and sizes, it is desirable to provide a heavy-load transporting roller 10 that can accommodate several types of commonly used profile materials of different widths, including wider ones. Accordingly, in order to expand the main body frame 11, a configuration allowing attachment and detachment of additional frames on both side surfaces of the main body frame 11 has been devised.

[0018] Figure 2 is a diagram illustrating a state in which an additional frame is coupled to a main body frame. Further, Figure 3 shows a heavy-load transporting roller with a coupled additional frame, where (a) is a plan view and (b) is a side view.

[0019] First, in order to enlarge the main body frame 11 according to the size of the profile material, detachable additional frames 21 are provided on both side surfaces of the main body frame 11. Here, the additional frame 21 has the same thickness as the main body frame 11, and is provided with a plurality of female screw portions 21a to which the guide member 17 can be attached. Since the female screw portions 21a are formed at positions matching the size of the profile material, the guide member 17 can be attached at an appropriate position. Specifically, using the female screws 11a and 21a shown in Figure 3(a) enables accommodation of profile materials with widths of 150 mm, 200 mm, and 300 mm. Here, if the main body frame 11 is made smaller, it can also accommodate 100 mm-wide profile materials, and if the number of female screws 21a is increased to change their positions, it can further accommodate more various types of profile materials.

[0020] As an example of a method for attaching and detaching the additional frame 21, a through hole 22 penetrating the side surface of the additional frame 21 and a mounting hole 11b internally threaded on the side surface of the main body frame 11 are provided at the position shown by the broken line in Figure 2, and a mounting bolt is passed through the through hole 22 and screwed into the mounting hole 11b. With this configuration, the additional frame 21 can be easily combined with the main body frame 11. Naturally, other combining methods may also be used.

[0021] Fig. 4 is a perspective view in which a profile provided with an aluminum square pipe is used as a rail, showing an example in which the position of the guide member is changed between (a) and (b).

[0022] The profile 30 used in Fig. 4(a) is also called an aluminum square bar and has a width of 200 mm, so the guide member 17 is attached to the female threaded portion 21a on the main body frame 11 side of the additional frame 21. On the other hand, the profile 30 used in Fig. 4(b) is also called an aluminum pentagonal flat bar and has a width of 300 mm, so the guide member 17 is attached to the female threaded portion 21a on the outer edge side of the additional frame 21. In the case of the profile 30 formed of such an aluminum square pipe, the guide member 17 is provided with a cushion member 17c, which prevents the heavy-load carrying roller 10 from falling off by coming into contact with the side portion of the profile 30.

[0023] As described above, by changing the position of the guide member using the additional frame, it is possible to accommodate profiles formed of H-section steels and aluminum square pipes of several sizes, and enable the heavy-load carrying roller to travel smoothly on the rail without falling off. Description of Reference Numerals

[0024] 10 Heavy-load carrying roller 11 Main body frame 11a Female threaded portion 11b Mounting hole 12 Tire 13 Top plate 15 Handle attachment portion 17 Guide member 17a Rod-shaped fitting 17b Disc-shaped member 17c Cushion member 17d Male threaded portion 21 Additional frame 21a Female threaded portion 22 Through hole 30 Rail (profile) 40 Block 41 Iron plate 50 heavy items 60 factories 100 Rollers for transporting heavy objects

Claims

1. A roller for transporting heavy objects, which uses a flat-topped profile as a rail, It has a plate-shaped main frame and a plurality of tires provided on the main frame, The four corners of the main frame are provided with female threaded portions to which guide members can be attached to prevent them from falling off the rails. Furthermore, the main frame has detachable additional frames on both sides, the additional frames being the same thickness as the main frame and having multiple female screw portions to which the guide member can be attached. A roller for transporting heavy objects, characterized in that the guide member comprises a rod-shaped metal fitting and a cushioning member that contacts the side of the rail, and one end of the rod-shaped metal fitting is provided with a male threaded portion that can be screwed into the female threaded portion, and the guide member is attached by screwing the male threaded portion into one of the female threaded portions.

2. The additional frame has through holes that penetrate its side surface, and the main frame has mounting holes with internal threads on its side surface. The roller for transporting heavy objects according to claim 1, characterized in that the additional frame can be attached to the main frame by screwing the mounting bolts into the mounting holes through the through holes.

3. The roller for transporting heavy objects according to claim 1 or 2, characterized in that the aforementioned profile is a profile comprising an aluminum square pipe or an H-shaped steel.

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