JPH0678332U - Turntable - Google Patents

Abstract

(57) [Summary] [Structure] Annular under ring 2 and upper ring 3
And a plurality of bearings 4 are rotatably mounted on an annular vertical wall surface of either one of the rings 2 and 3, and the bearings 4 are annularly rolled on the other horizontal plane to form an under ring 2. In the turntable 1 that rotatably supports the upper ring 3, the under ring 2 or the other ring of the upper ring 3 has at least one of the outer ring and the inner side of the position where the bearing 4 rolls. The annular protrusion 7 which can contact the side surface is formed. [Effect] When a force is applied to the upper ring 3 from the side, the annular ridge 7 abuts and supports the side surface of the bearing 4, and the annular ridge 7 rotates the bearing 4, so that the upper ring 3 is displaced. However, smooth rotation is secured.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a turntable for rotating a cargo pallet in a horizontal plane.

[0002]

[Prior art]

 Conventionally, it is often preferable to rotate a pallet when placing various items on the pallet for cargo handling or moving it from the pallet to another position.

For this reason, as a turntable arranged under the pallet, the one described in Japanese Utility Model Publication No. 62-2178 is known.

This is one in which a bearing is attached to an annular under ring having an L-shaped cross section, an upper ring is placed on the under ring and supported by the bearing, and the upper ring is rotatable relative to the under ring. is there.

[0005]

[Problems to be solved by the device]

 However, in this type of turntable, both the under ring and the upper ring are substantially L-shaped in cross section, and they are simply stacked and supported by bearings. When force is applied, the upper ring may be displaced from the under ring, and the vertical wall surface of the upper ring may rub against the shaft of the bearing, etc., and may not rotate smoothly.

In the device of the above publication, a sphere is rotatably fitted in a hole opened at the tip of the bearing shaft, and the rotation of the sphere softens the friction with the upper ring. The ball cannot rotate smoothly, and inadequate rotation of the upper ring cannot be avoided.

The present invention has been made in view of such circumstances, and it is an object of the present invention to support the deviation even if there is a deviation between the upper ring and the under ring by a bearing to ensure smooth rotation. It is what

[0008]

[Means for solving the problem]

 Thus, the present invention comprises an annular under ring and an annular upper ring arranged on the under ring, and a plurality of bearings are provided on either one of the under ring and the upper ring. In a turntable in which the underring and the upper ring are rotatably supported with respect to each other, the bearing is rotatably mounted and the bearing is rolled in an annular manner on the other horizontal surface. An annular ridge capable of contacting a side surface of the bearing is formed on at least one of an outer side and an inner side of a position where the bearing rolls in the ring.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of a turntable 1 according to the present invention, which is composed of an under ring 2 and an upper ring 3 each having a substantially L-shaped cross section, and is supported by a bearing 4 attached to the under ring 2. The bottle 3 is rotatably supported. A pallet 5 is placed on the upper ring 3.

The under ring 2 has a substantially L-shaped cross section composed of a bottom plate 2a and a vertical wall 2b that is bent and erected on the outer edge of the bottom plate 2a, and protrudes inward from the inner surface of the upper end of the vertical wall 2b. A plurality of supporting shafts 6 are planted, and the inner ring 4a of the bearing 4 is fitted and attached to the supporting shafts 6.

The bearing 4 is not particularly limited in its structure as long as it can withstand both loads in the radial direction and the thrust direction. The most commonly used deep groove ball bearings are the most suitable.

Next, the upper ring 3 also has a substantially L-shaped cross section composed of an upper plate 3a and a vertical wall 3b which is bent and erected on the inner edge of the upper plate 3a, and the lower surface of the upper plate 3a is a bearing. It is mounted on and supported by the outer ring 4b of No. 4.

A round bar 7 on the ring is fixed inside the corner of the upper plate 3a of the upper ring 3 and the vertical wall 3b to form an annular ridge. When the upper ring 3 is displaced with respect to the under ring 2, the round bar 7 comes into contact with the side edge of the outer ring 4b of the bare ring 4 at any position.

The round bar 7 can be fixed to the lower surface of the outer upper plate 3a at a position where it is supported by the bearing 4 in the upper ring 3 as shown by a chain line, and the round bar 7 shown by a solid line is The round bar 7 shown by a chain line may be provided at the same time.

FIG. 3 shows another embodiment of the present invention. A bearing 4 is attached to the outer surface of the lower end of the vertical wall 3 b of the upper ring 3, and the bearing 4 is attached to the bottom plate of the under ring 2. The upper ring 3 rotates with respect to the under ring 2 by rolling on the upper surface of 2a. A round bar 7 is fixed inside the corner of the bottom plate 2a of the under ring 2 and the vertical wall 2b.

FIG. 4 shows still another embodiment, in which the under ring 2 has a substantially L-shaped cross section in which a vertical wall 2b is erected on the inner edge of the bottom plate 2a, which is the opposite of FIG. A bearing 4 is attached to the outer surface of the upper end of the vertical wall 2b. On the other hand, the upper ring 3 also has a substantially L-shaped cross section in which a vertical wall 2b is vertically provided on the outer edge of the upper plate 3a contrary to FIG. 1, and a round bar 7 is fixed to the inside of the corner.

Although not particularly shown, in the combination of the under ring 2 and the upper ring 3 shown in FIG. 4, the bearing 4 is attached to the vertical wall 3b of the upper ring 3 and the round bar 7 is provided inside the corner of the under ring 2. May be fixed.

Further, also in these other examples, the round bar 7 can be fixed to a position close to the edge of the upper plate 3a or the bottom plate 2a, as shown by the chain line in FIG. It may be fixed to both inside and inside.

Further, in the above description, the ring-shaped ridge is formed by fixing the round bar 7, but the cross-sectional shape of the fixed bar does not necessarily have to be circular, and the lower surface of the upper plate 3a or the bottom plate. It is also possible to form an annular rib by projecting an annular rib on the upper surface of 2a by an appropriate means.

Further, in the above description, the under ring 2 and the upper ring 3 are shown as having a substantially L-shaped cross section, but these shapes are not necessarily limited to the substantially L-shaped cross section.

In the present invention, it is necessary that either one of the under ring 2 and the upper ring 3 has a vertical wall to which the bearing 4 can be attached, and the other has a horizontal surface for rolling the bearing 4. However, the shape of other portions is not particularly limited.

For example, in the under ring 2 in FIG. 2, if the load of the turntable 1, the pallet 5, and the articles placed on the pallet 5 can be supported, the bottom plate 2a is not always necessary and is necessary. If so, the bottom plate 2a may be a single plate that covers the entire lower portion of the turntable 1, or may be a plate that projects outward from the vertical wall 2b.

Also in the upper ring 3, the vertical wall 3b is not always necessary, and if the upper plate 3a has a horizontal surface on which the bearing 4 can roll, for example, the upper plate 3a and the pallet 5 are integrated. It can also be a plate.

However, it is preferable to use the under ring 2 and the upper ring 3 having an L-shaped cross section because they are light and easy to handle, can support a large load, and are unlikely to be deformed such as twisted.

[0025]

[Action]

 Next, the operation of the present invention will be described based on the embodiment of FIG.

A bearing 4 is attached to the vertical wall 2b of the under ring 2, and the upper ring 3 is supported by the bearing 4 on its upper plate 3a, so that when the upper ring 3 is rotated with respect to the under ring 2. Since the bearing 4 rolls on the lower surface of the upper plate 3a, it can be rotated with a small force.

When a force is applied to the upper ring 3 from the side and the upper ring 3 is displaced from the under ring 2, the round bar 7 abuts on the side surface of the outer ring 4 b of the bearing 4 and the load from the side is applied. When it is attempted to rotate the turntable 1 while supporting it, the round bar 7 and the lower surface of the upper plate 3a cooperate to rotate the bearing 4, so that the rotation can be smoothly performed.

Also in the embodiment of FIGS. 3 and 4, the same operation as in the case of FIG. 2 is performed.

[0029]

[Effect of device]

 Therefore, according to the present invention, when the article is placed on the pallet 5 or the article is moved to another position, the upper ring 3 is rotated to rotate the pallet 5 to a desired position. You can

In addition, when an article is placed on or moved on the pallet 5 and a lateral force is applied to the pallet 5 and the upper ring 3 is displaced from the under ring 2, the pallet 5 is smoothly moved. Rotation is secured.

Further, the belt can be hung on the upper ring 3 of the turntable 1 of the present invention to positively rotate it by power.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the turntable of the present invention.

2 is an enlarged cross-sectional view of a portion of the embodiment of FIG.

FIG. 3 is an enlarged sectional view of a part of another embodiment of the present invention.

FIG. 4 is an enlarged sectional view of a part of a further embodiment of the present invention.

[Explanation of symbols]

 1 Turntable 2 Under ring 3 Upper ring 4 Bearing 7 Round bar (annular ridge)

Claims (1)

[Scope of utility model registration request] 1. An annular under ring (2) and an annular upper ring (3) disposed on the under ring (2), and the under ring (2) and the upper ring (3). A plurality of bearings (4) are rotatably attached to one of the annular vertical wall surfaces, and the bearings (4) are rolled in an annular manner on the other horizontal plane, thereby forming an under ring (2) and an upper ring (3). In a turntable (1) rotatably supporting one another, at least one of the outer ring and the inner ring of the other ring of the under ring (2) or the upper ring (3) at which the bearing (4) rolls. The turntable is characterized in that an annular projection (7) is formed on the side surface of the bearing (4).