Drum Rotating Stand

Abstract

To provide a drum rotary table which is fitted under a flange part of a drum such as a cable drum to facilitate the movement of the drum and is more convenient than current products.SOLUTION: A drum rotary table according to the present invention which is fitted under the flange part of a drum to facilitate movement of the drum includes a tray part that supports the gravity of the flange part of the drum, a left side wall erected on the left of the tray part, a right side wall erected on the right of the tray part, a left extension part that extends further left from the left side wall, a right extension part that extends further right from the right side wall, a left swivel caster provided below the left extension part, and a right swivel caster provided below the right extension part.SELECTED DRAWING: Figure 1

Description

Technical Field

[0005]

[0001] The present invention relates to a drum turntable that is placed under the flange portion of a drum such as a cable drum to facilitate the movement of the drum (not a turntable of the type that facilitates the feeding / winding of a cable).

Background Art

[0002] A drum turntable that is placed under the flange portion of a drum such as a cable drum to facilitate the movement of the drum has already been commercialized and sold (for example, "ISK - DR85" and "ISK - DR110" manufactured by Yuryo Seiki Co., Ltd.). FIG. 11 is an external view photograph of "ISK - DR85".

[0003] More specifically, the drum turntable 50 includes a tray portion 51 that supports the gravity of the flange portion of the drum, a left side wall 52 erected on the left side of the tray portion 51, a right side wall 53 erected on the right side of the tray portion 51, a left U - shaped bracket 54 (U - shaped in plan view) extending further to the left side of the left side wall 52, a right U - shaped bracket 55 (U - shaped in plan view) extending further to the right side of the right side wall 53, a left roller (non - swivel caster) 56 housed in the left U - shaped bracket 54 and rotatably supported by the left U - shaped bracket 54 and the left side wall 52, a right roller (non - swivel caster) 57 housed in the right U - shaped bracket 55 and rotatably supported by the right U - shaped bracket 55 and the right side wall 53, and a front swivel caster 58 provided on the bottom surface side in front of the tray portion 51.

[0004] One end of a handle 61 is connected to the front surface of the left U - shaped bracket 54, and the other end of the handle 61 is supported on the front side of the left side wall 52. Substantially symmetrically in the front - rear direction, one end of a handle 62 is connected to the rear surface of the left U - shaped bracket 54, and the other end of the handle 62 is supported on the rear side of the left side wall 52.

[0005] Symmetrically, one end of a handle 63 is connected to the front surface of the right-hand U-shaped bracket 55, and the other end of the handle 63 is supported on the front side of the right-hand side wall 53. Approximately symmetrically front to back, one end of a handle 64 is connected to the rear surface of the right-hand U-shaped bracket 55, and the other end of the handle 64 is supported on the rear side of the right-hand side wall 53. [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] The modification of widening the left U-shaped bracket 54 and the right U-shaped bracket 55 (or corresponding components) has the disadvantage of increasing the space occupied when storing drums such as cable drums with the drum turntable still attached. However, this modification creates space that allows the use of swivel casters instead of conventional non-swivel caster type rollers. Through experiments using prototypes, the inventors have come to a strong conclusion that the degree of increased convenience in "tight maneuverability" achieved by using swivel casters will outweigh the aforementioned disadvantages and achieve a sufficient market advantage.

[0007] This invention was conceived based on the above findings. The object of this invention is to provide a drum turntable that is fitted under the flange portion of a drum such as a cable drum to facilitate the movement of the drum, and that is more convenient than existing products. [Means for solving the problem]

[0008] A first aspect of the present invention is a drum turntable that is fitted under the flange portion of a drum to facilitate the movement of the drum, and is characterized by comprising: a tray portion that supports the gravity of the flange portion of the drum; a left side wall erected to the left of the tray portion; a right side wall erected to the right of the tray portion; a left extension portion extending further to the left of the left side wall; a right extension portion extending further to the right of the right side wall; a left swivel caster provided below the left extension portion; and a right swivel caster provided below the right extension portion.

[0009] According to the first aspect of the present invention, since a left-handed swivel caster and a right-handed swivel caster are employed, the degree of freedom of movement of the drum turntable is high, and "tight turning" is possible in narrow spaces.

[0010] In the first aspect of the present invention, it is preferable that a front swivel caster is provided on the front side of the tray portion of the drum turntable. However, at least as of the filing of this application, an aspect in which a roller other than a swivel caster is provided on the front side of the tray portion is also within the scope of the first aspect of the present invention.

[0011] Furthermore, in the first embodiment of the present invention, it is preferable that at least one of the left-hand swivel caster and the right-hand swivel caster is provided with a rotation stopper function. This prevents the drum turntable from moving in an undesirable direction at an undesirable timing.

[0012] In the first embodiment of the present invention, it is even more preferable that each of the left-hand swivel caster and the right-hand swivel caster is provided with a rotation stopper function. This more effectively prevents the drum turntable from moving in an undesirable direction at an undesirable timing.

[0013] In general, the rotation stopper function in swivel casters is a "double stopper" function that simultaneously locks both the rotation (direction change) of the rotation axis itself and the rotation (of the wheel) around the rotation axis. However, at least as of the time of this application, it also includes rotation stopper functions that lock only one of either the rotation (direction change) of the rotation axis itself or the rotation (of the wheel) around the rotation axis, as well as rotation stopper functions that lock the rotation (direction change) of the rotation axis itself and the rotation (of the wheel) around the rotation axis independently (selectively) of each other.

[0014] Furthermore, a second aspect of the present invention is a drum turntable that is fitted below the flange portion of a drum to facilitate the movement of the drum, comprising: a tray portion that supports the gravity of the flange portion of the drum; a left side wall erected to the left of the tray portion; a right side wall erected to the right of the tray portion; a left extension portion extending further to the left of the left side wall; a right extension portion extending further to the right of the right side wall; two or more leftward swivel casters provided below the left extension portion; and two or more rightward swivel casters provided below the right extension portion, wherein the two or more leftward swivel casters are aligned in the left-right direction, and the two or more rightward swivel casters are also aligned in the left-right direction.

[0015] According to a second aspect of the present invention, two or more left-facing swivel casters are provided aligned in the left-right direction below the left-facing extension, and two or more right-facing swivel casters are provided aligned in the left-right direction below the right-facing extension. Therefore, even if the weight of a drum such as a cable drum exceeds the load capacity limit of two swivel casters combined, when the drum is placed on the drum turntable, the weight of the drum is supported by four or more aligned swivel casters, thereby effectively suppressing the occurrence of swivel caster failures.

[0016] Furthermore, in the second aspect of the present invention, since both left-handed and right-handed swivel casters are employed, the degree of freedom of movement of the drum turntable is high, and "tight turning" is possible in narrow spaces.

[0017] In the drum turntable according to the second embodiment of the present invention, it is also preferable that a forward swivel caster is provided on the front side of the tray portion. However, at least as of the filing of this application, an embodiment in which a roller other than a swivel caster is provided on the front side of the tray portion is also within the scope of the second embodiment of the present invention.

[0018] Furthermore, in a second aspect of the present invention, it is preferable that at least one of the two or more left-moving swivel casters, or at least one of the two or more right-moving swivel casters, is provided with a rotation stopper function. This prevents the drum turntable from moving in an undesirable direction at an undesirable timing.

[0019] In a second embodiment of the present invention, it is even more preferable that a rotation stopper function is provided on at least one of the two or more leftward swivel casters and at least one of the two or more rightward swivel casters. This further effectively prevents the drum turntable from moving in an undesirable direction at an undesirable timing. [Effects of the Invention]

[0020] According to the first aspect of the present invention, since a left-handed swivel caster and a right-handed swivel caster are employed, the degree of freedom of movement of the drum turntable is high, and "tight turning" is possible in narrow spaces.

[0021] According to the second aspect of the present invention, two or more left freely movable casters are provided in alignment in the left - right direction below the left extension portion, and two or more right freely movable casters are provided in alignment in the left - right direction below the right extension portion. Therefore, even when the weight of a drum such as a cable drum exceeds the load - bearing limit of two freely movable casters, when placing the drum on the drum turntable, the weight of the drum is supported by four or more freely movable casters arranged in alignment. Thus, the occurrence of failures of the freely movable casters can be effectively suppressed. Further, also according to the second aspect of the present invention, since left freely movable casters and right freely movable casters are adopted, the degree of freedom of movement of the drum turntable is high, and "small turning" in a narrow place is possible.

Brief Description of the Drawings

[0022] [Figure 1] It is a perspective view (photo) of the drum turntable of the first embodiment of the present invention. [Figure 2] It is a side view of the drum turntable of FIG. 1. [Figure 3] It is a plan view of the drum turntable of FIG. 1. [Figure 4] It is a bottom view of the drum turntable of FIG. 1. [Figure 5] It is a front view of the drum turntable of FIG. 1. [Figure 6] It is a perspective view (photo) of the drum turntable of the second embodiment of the present invention. [Figure 7] It is a side view of the drum turntable of FIG. 6. [Figure 8] It is a plan view of the drum turntable of FIG. 6. [Figure 9] It is a bottom view of the drum turntable of FIG. 6. [Figure 10] It is a front view of the drum turntable of FIG. 6. [Figure 11] It is a perspective view (photo) of a conventional drum turntable.

Modes for Carrying Out the Invention

[0023] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0024] (Configuration of the first embodiment) Figure 1 is a perspective view (photograph) of the drum turntable 10 according to the first embodiment of the present invention. Figure 2 is a side view of the drum turntable 10 according to this embodiment, Figure 3 is a top view of the drum turntable 10 according to this embodiment, Figure 4 is a bottom view of the drum turntable 10 according to this embodiment, and Figure 5 is a front view of the drum turntable 10 according to this embodiment.

[0025] The drum turntable 10 of this embodiment is a drum turntable that is fitted under the flange portion (not shown) of a drum (not shown), such as a cable drum, to facilitate the movement of the drum (it is not a turntable of the type that facilitates the unwinding / winding of cables).

[0026] As shown in Figures 1 to 5, the drum turntable 10 of this embodiment includes a tray section 11 that supports the gravity of the drum flange, a left side wall 12 erected to the left of the tray section 11, a right side wall 13 erected to the right of the tray section 11, a left extension section 14 (U-shaped in side view: see Figure 2) extending further to the left of the left side wall 12, a right extension section 15 (U-shaped in side view) extending further to the right of the right side wall 13, a left swivel caster 16 provided below the left extension section 14, a right swivel caster 17 provided below the right extension section 15, and a front swivel caster 18 provided on the front side of the tray section 11.

[0027] Each of the left extension 14 and the right extension 15 is rectangular in shape, measuring approximately 14 cm x 10 cm in plan view, and is designed to be wider than the left-right width of the conventional U-shaped brackets 54 and 55 (see Figure 11).

[0028] This creates space that allows for the use of swivel casters 16 and 17. The left swivel caster 16 is supported on the left extension 14 via four mounting screws that pass through the upper surface of the left extension 14, and the right swivel caster 17 is supported on the right extension 15 via four mounting screws that pass through the upper surface of the right extension 15.

[0029] One end of a handle 21 is connected to the front surface of the left extension 14, and the other end of the handle 21 is supported on the front side of the left side wall 12. Approximately symmetrically, one end of a handle 22 is connected to the rear surface of the left extension 14, and the other end of the handle 22 is supported on the rear side of the left side wall 12.

[0030] Symmetrically, one end of a handle 23 is connected to the front surface of the rightward extension 15, and the other end of the handle 23 is supported on the front side of the rightward side wall 13. Approximately symmetrically front to back, one end of a handle 24 is connected to the rear surface of the rightward extension 15, and the other end of the handle 24 is supported on the rear side of the rightward side wall 13.

[0031] (Operation of the first embodiment) When placing the flange portion of a cable drum or other drum onto the tray portion 11, the tray portion 11 is tilted longitudinally, lifting the front swivel caster 18 off the ground, while the rear end of the tray portion 11 (where a flange fall prevention pin is detachably provided: see Figure 1) is brought into contact with the ground. In this state (with the flange fall prevention pin removed), the flange portion of the drum is rolled or slid from the rear end of the tray portion 11 onto the tray portion 11.

[0032] When removing the flange portion of a drum, such as a cable drum, from the tray portion 11, the flange portion of the drum is rolled or slid toward the rear end of the tray portion 11, while the tray portion 11 is tilted longitudinally, lifting the front swivel caster 18 off the ground, and the rear end of the tray portion 11 is brought into contact with the ground. In this state, the flange portion of the drum is rolled or slid away from the rear end of the tray portion 11 to the outside of the drum turntable 10.

[0033] (Effects of the first embodiment) According to the first embodiment described above, since a left-moving swivel caster 16 and a right-moving swivel caster 17 are employed, the drum turntable 10 has a high degree of freedom of movement and can "turn around" in narrow spaces.

[0034] Furthermore, since the drum turntable 10 of this embodiment is equipped with a forward-facing swivel caster 18 on the front side of the tray section 11, it is possible to make even tighter turns in narrow spaces.

[0035] (Rotation stopper function of the first embodiment) In this embodiment, it is preferable that a rotation stopper function is provided on at least one of the left-hand swivel caster 16 and the right-hand swivel caster 17 of the drum turntable 10. This prevents the drum turntable 10 from moving in an undesirable direction at an undesirable timing. Alternatively, in this embodiment, it is preferable that a rotation stopper function is provided on each (or both) of the left-hand swivel caster 16 and the right-hand swivel caster 17 of the drum turntable 10. This further effectively prevents the drum turntable 10 from moving in an undesirable direction at an undesirable timing.

[0036] (Configuration of the second embodiment) Figure 6 is a perspective view (photograph) of the drum turntable 110 according to the second embodiment of the present invention. Figure 7 is a side view of the drum turntable 110 according to this embodiment, Figure 8 is a top view of the drum turntable 110 according to this embodiment, Figure 9 is a bottom view of the drum turntable 110 according to this embodiment, and Figure 10 is a front view of the drum turntable 110 according to this embodiment.

[0037] The drum turntable 110 of this embodiment is also a drum turntable that is fitted under the flange portion (not shown) of a drum (not shown), such as a cable drum, to facilitate the movement of the drum (it is not a turntable of the type that facilitates the unwinding / winding of cables).

[0038] As shown in Figures 6 to 10, the drum turntable 110 of this embodiment includes a tray section 111 that supports the gravity of the flange portion of the drum, a left side wall 112 erected to the left of the tray section 111, a right side wall 113 erected to the right of the tray section 111, a left extension section 114 (U-shaped in side view: see Figure 7) extending further to the left of the left side wall 112, a right extension section 115 (U-shaped in side view) extending further to the right of the right side wall 113, two left swivel casters 116a and 116b provided below the left extension section 114, two or more right swivel casters 117a and 117b provided below the right extension section 115, and a front swivel caster 118 provided on the front side of the tray section 111.

[0039] As shown in Figures 6 to 10, the two left-facing swivel casters 116a and 116b are aligned in the left-right direction, and the two right-facing swivel casters 117a and 117b are also aligned in the left-right direction.

[0040] Each of the left extension 114 and the right extension 115 is rectangular in shape, measuring approximately 14 cm x 22 cm in plan view, and is designed to be wider than the left-right width of the conventional U-shaped brackets 54 and 55 (see Figure 11).

[0041] This creates space that allows for the use of swivel casters 116a, 116b, 117a, and 117b. Each of the two left swivel casters 116a and 116b is supported on the left extension 114 via four mounting screws that pass through the upper surface of the left extension 114, and each of the two right swivel casters 117a and 117b is supported on the right extension 115 via four mounting screws that pass through the upper surface of the right extension 115.

[0042] One end of a handle 121 is connected to the front surface of the left extension 114, and the other end of the handle 121 is supported on the front side of the left side wall 112. Approximately symmetrically, one end of a handle 122 is connected to the rear surface of the left extension 114, and the other end of the handle 122 is supported on the rear side of the left side wall 112.

[0043] Symmetrically, one end of the handle 123 is connected to the front surface of the right extension 115, and the other end of the handle 123 is supported on the front side of the right side wall 113. Approximately symmetrically front to back, one end of the handle 124 is connected to the rear surface of the right extension 115, and the other end of the handle 124 is supported on the rear side of the right side wall 113.

[0044] (Operation of the second embodiment) When placing the flange portion of a drum, such as a cable drum, onto the tray portion 111, the tray portion 111 is tilted longitudinally, lifting the front swivel caster 118 off the ground, while the rear end of the tray portion 111 (where a flange fall prevention pin is detachably provided: see Figure 6) is brought into contact with the ground. In this state (with the flange fall prevention pin removed), the flange portion of the drum is rolled or slid from the rear end of the tray portion 111 onto the tray portion 111.

[0045] When removing the flange portion of a drum, such as a cable drum, from the tray portion 111, the flange portion of the drum is rolled or slid toward the rear end of the tray portion 11, while the tray portion 11 is tilted longitudinally, lifting the front swivel caster 18 off the ground, and the rear end of the tray portion 11 is brought into contact with the ground. In this state, the flange portion of the drum is rolled or slid from the rear end of the tray portion 11 toward the outside of the drum turntable 110.

[0046] (Effects of the second embodiment) According to the second embodiment described above, two left-hand swivel casters 116a and 116b are provided below the left extension 114, aligned in the left-right direction, and two right-hand swivel casters 117a and 117b are provided below the right extension 115, aligned in the left-right direction. Therefore, even if the weight of a drum such as a cable drum exceeds the load capacity limit of two swivel casters, when the drum is placed on the drum turntable 110 (when the tray portion 111 tilts in the longitudinal direction), the weight of the drum is supported by four or more aligned swivel casters, thereby effectively suppressing the occurrence of swivel caster failures.

[0047] Furthermore, according to the second embodiment, since two left-hand swivel casters 116a and 116b and two right-hand swivel casters 117a and 117b are employed, the drum turntable 110 has a high degree of freedom of movement and can "turn around" in narrow spaces.

[0048] Furthermore, since the drum turntable 110 of this embodiment is equipped with a forward-facing swivel caster 118 on the front side of the tray section 111, it is possible to make even tighter turns in narrow spaces.

[0049] (Rotation stopper function of the second embodiment) Furthermore, in the drum turntable 110 of this embodiment, it is even more preferable that a rotation stopper function is provided on at least one of the two left-hand swivel casters 116a, 116b, or at least one of the two right-hand swivel casters 117a, 117b. This prevents the drum turntable 110 from moving in an undesirable direction at an undesirable timing. Alternatively, it is even more preferable that a rotation stopper function is provided on at least one of the two left-hand swivel casters 116a, 116b and at least one of the two right-hand swivel casters 117a, 117b. This further more effectively prevents the drum turntable 110 from moving in an undesirable direction at an undesirable timing. [Explanation of Symbols]

[0050] 10 Drum Rotating Stand 11 Tray section 12 Left side wall 13 Right side wall 14 Left extension 15 Right side extension 16 Left-hand swivel caster 17 Right-handed swivel caster 18. Forward swivel casters 21 Handle 22 Handle 23 Handle 24 Handles 50 Drum Rotating Stand 51 Tray section 52 Left side wall 53 Right side wall 54 Left-hand U-shaped bracket 55 Right-hand U-shaped bracket 58 Front swivel casters 61 Handle 62 Handle 63 Handle 64 Handles 110 Drum Rotating Stand 111 Tray section 112 Left side wall 113 Right side wall 114 Left extension 115 Right extension 116a Left-hand swivel caster (outside) 116b Left-hand swivel caster (inside) 117a Right-hand swivel caster (outside) 117b Right-hand swivel caster (inside) 118 Forward swivel caster 121 Handle 122 Handle 123 Handle 124 Handle

Claims

1. A drum turntable that is fitted under the flange portion of a drum to facilitate the movement of the drum, The tray section supports the gravity of the flange section of the drum, A left side wall erected to the left of the tray section, A right side wall erected to the right of the tray section, A leftward extension portion extending further to the left of the aforementioned left side wall, A rightward extension portion extending further to the right of the aforementioned rightward side wall, A left-handed swivel caster is provided below the leftward extension, A rightward swivel caster is provided below the rightward extension, The forward-facing swivel caster is provided on the front side of the tray section, Equipped with, The left-hand swivel caster and the right-hand swivel caster are mounted at the same position in the front-rear direction along the tray section. The rear end of the tray section is open to the rear. Along the tray section, the distance from the left swivel caster and the right swivel caster to the rear end is longer than the width between the left side wall and the right side wall. There are no swivel casters behind the aforementioned left-hand swivel caster and the aforementioned right-hand swivel caster. A drum turntable characterized by the following features.

2. At least one of the left-hand swivel caster and the right-hand swivel caster is provided with a rotation stopper function of the type that locks the rotation of at least the rotation axis itself. The drum turntable according to feature 1.

3. Each of the left-hand and right-hand swivel casters is provided with a rotation stopper function of the type that locks the rotation of the rotation axis itself. The drum turntable according to feature 2.

4. A drum turntable that is fitted under the flange portion of a drum to facilitate the movement of the drum, The tray section supports the gravity of the flange section of the drum, A left side wall erected to the left of the tray section, A right side wall erected to the right of the tray section, A leftward extension portion extending further to the left of the aforementioned left side wall, A rightward extension portion extending further to the right of the aforementioned rightward side wall, Two or more leftward-moving swivel casters are provided below the leftward extension, Two or more rightward swivel casters are provided below the aforementioned rightward extension, The forward-facing swivel caster is provided on the front side of the tray section, Equipped with, The two or more left-handed swivel casters are aligned in the left-right direction. The aforementioned two or more right-handed swivel casters are also aligned in the left-right direction. The two or more leftward-facing swivel casters and the two or more rightward-facing swivel casters are mounted at the same position in the front-to-back direction along the tray section. The rear end of the tray section is open to the rear. Along the tray section, the distance from the two or more left-hand swivel casters and the two or more right-hand swivel casters to the rear end is longer than the width between the left side wall and the right side wall. There are no swivel casters behind the two or more leftward swivel casters and the two or more rightward swivel casters. A drum turntable characterized by the following features.

5. At least one of the two or more left-handed swivel casters, or at least one of the two or more right-handed swivel casters, is provided with a rotation stopper function of the type that locks the rotation of the rotation axis itself. The drum turntable according to feature 4.

6. At least one of the two or more left-handed swivel casters and at least one of the two or more right-handed swivel casters are provided with a rotation stopper function of the type that locks the rotation of the rotation axis itself. The drum turntable according to feature 5.

Images