JPS6228563Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a roller for moving heavy objects, which is laid between the heavy object and the ground when transporting the heavy object, and transports the heavy object by rolling contact.

As shown in Fig. 1, this type of conventional roller has a cap member 2 fitted into both ends of a hollow cylindrical roller body 1 having an appropriate thickness, which is formed with a fitting portion 2a having a diameter almost the same as the inner diameter of the roller body 1, and a fitting end portion 2b having a diameter larger than the diameter of the fitting portion 2a and smaller than the outer diameter of the roller body 1, and a hole 2c is drilled in the center. The cap member 2 is fitted into the openings 1a at both ends of the roller body 1, and the fitting portion 2a is fitted into the openings 1a at both ends of the roller body 1.
The roller body 1 is fitted into the cylinder of the roller body 1, and the end faces 1b of the roller body 1 and the cap member 2
However, as shown in FIG. 2, the angle between the end face 1b and the side face 2d is a right angle or an acute angle, so when this portion is welded, there is a possibility of insufficient penetration at the corner or a cavity A.
When the end of the roller is struck during use, a crack B occurs at point A, causing the welded portion to break.

This idea was devised in view of the above-mentioned circumstances, and its purpose is to prevent the end face of the roller body, which is the welding part, from being The end face and side face are formed so that the angle formed with the side face of the mating end is an obtuse angle, and when they are welded, there will be no poor penetration or a hollow part, and a wide welded area can be obtained. Therefore, it is an object of the present invention to provide a roller for moving heavy objects that can reliably weld both members together and that does not cause cracks to occur in the welded part even if the end is hit when the roller is used. .

This invention will be explained in detail below based on the accompanying drawings.

FIG. 3 is an overall perspective view showing a roller for moving heavy objects according to this invention. In the drawing, 10 is a hollow cylindrical roller body having an appropriate wall thickness, and cap members 11 are provided at both end openings 10a of the roller body 10. is internally welded. As shown in FIG. 4, the cap member 11 has a circular cross section with approximately the same diameter as the inner diameter of the roller body 10, and includes a fitting portion 11a that is fitted inside the cylinder of the roller body 10, and this fitting portion. A fitting end portion 11b having a circular cross section with a diameter larger than the diameter of the roller body 11a and smaller than the outer diameter of the roller body 10 is integrally provided, and a hole 11c is bored in the center portion. Then, an inclined portion 11e is formed on the side surface 11d of the fitting end portion 11b, and the fitting portion 11a is connected to the openings 1 at both ends of the roller body 10.
0a, both end surfaces 1 of the roller body 10
0b and the inclined portion 11e of the side surface 11d are formed to form an obtuse angle. Then, the fitting portions 11a of the cap member 11 are fitted into the openings 10a at both ends of the roller body 10, and the end surfaces 10b and side surfaces 11d are welded.
It is located at a.

In addition, on both end surfaces 10b of the roller main body 10,
As shown in FIG. 5, it is also possible to form a sloped portion 10c. Further, the side surface 11d of the cap member 11 can also have a cross-sectional shape as shown in FIG. 6, and both have the same effect as shown in FIG. 4.

As described above, the roller for moving heavy objects according to this invention has an obtuse angle between the end surface 10b of the roller body 10 and the inclined portion 11e of the side surface 11d of the cap member 11, so those parts are welded together. When the roller is used, it is easy to weld, penetration is easy, and the welding surface is wide, so the bonding strength is further improved, and even if the end is tapped when using the roller, cracks will not occur from the welded part. It has the effect that it cannot be destroyed and can be used with peace of mind.

[Brief explanation of the drawing]

Figures 1 and 2 are a partial sectional view and an enlarged sectional view of a conventional roller, Figure 3 is a perspective view of a roller according to this invention, and Figure 4 is a partial sectional view of a roller according to this invention. , 5 and 6 are partial cross-sectional views of rollers according to other embodiments of this invention. In the drawing, 10...roller body, 10a...
End opening (opening), 10b... Welding part end face (end face), 11... Cap member, 11a... Fitting part, 11b... Fitting end, 11d... Welding part side surface (side surface), 11e... Slope portion.

Claims (1)

[Scope of utility model registration request] A fitting portion having a diameter approximately the same as the inner diameter of a hollow cylindrical roller body having an appropriate wall thickness, and a fitting end portion having a diameter larger than the diameter of the fitting portion and smaller than the outer diameter of the roller body are integrally formed. At the same time, when the fitting part is fitted into the end opening of the roller body, the shape of the welded part end face of the roller body and the welded part side face of the fitted end adjacent to this end face A cap member formed with obtuse angles is disposed in the openings at both ends of the roller body so that the fitting portions are fitted thereinto, and both welded portions of the roller body and the cap member are fitted. A weight transfer roller characterized by having its end and side surfaces welded.