WO2016117917A1

WO2016117917A1 - Performance wagon castor

Info

Publication number: WO2016117917A1
Application number: PCT/KR2016/000572
Authority: WO
Inventors: 이상원; 원대희; 김진영; 권오흥
Original assignee: 한국생산기술연구원
Priority date: 2015-01-20
Filing date: 2016-01-20
Publication date: 2016-07-28
Also published as: KR101714748B1; JP6342062B2; CN106660392A; CN106660392B; KR20160089664A; JP2017523083A

Abstract

A performance wagon castor according to an embodiment of the present invention comprises: an upper plate, which is fixed to the bottom surface of a wagon; and a lower plate, which has one or more wheels provided on the lower portion thereof, and which is coupled to the upper plate to be able to rotate relative thereto, wherein a bearing fixing shaft is provided on the upper surface of the lower plate, a housing is provided on the lower surface of the upper plate so as to surround the bearing fixing shaft, and the upper plate and the lower plate are coupled via a bearing interposed between the bearing fixing shaft and the housing. According to the present invention, by providing a spring ball member, it is possible to supplement the horizontal restoring force, which has been degraded by bearing coupling between the upper plate and the lower plate. Therefore, it is possible to provide a performance wagon castor, which can freely move in any direction, and which can stably move loaded articles, etc. while always remaining forced against the floor regardless of corrugations etc. of the floor.

Description

Performance Wagon Casters

The present invention relates to a performance wagon caster, and more particularly, to be able to move freely in the whole direction, and to move the goods loaded in such a state that is always in close contact with the bottom surface even in the irregularities of the bottom surface, etc. It's about a wagon caster for performances.

A wagon is a device designed to carry loads, and is a vehicle that can be fully or partially automated to move equipment, workpieces, products, etc. on site in each field. For example, when the wagon is used in a performance, an event, or the like, it may be used to carry various equipment and luggage necessary for the performance, to move stage props or people in the stage space, or to become a moving stage by itself.

1 shows an example of such a wagon 100.

The wagon 100 has four

wheels

148, 150, 152, 154 and drive mechanisms (drive wheels) 144, 146. The

wheels

148, 150, 152, 154 may be casters or any other suitable type of rotor.

The caster is like a wheel installed on the bottom of the wagon, which distributes the weight of the driving wheel and moves in all directions to facilitate the movement of the wagon.

Typically, the caster is composed of a fastening plate installed on the bottom of the wagon, a body rotatably coupled to the fastening plate, and a wheel installed on the body.

Meanwhile, a representative caster mechanism of the conventional wagon is shown in FIG. 6 (corresponding to FIG. 6 of Korean Patent No. 10-0875537), which uses a spring mechanism. However, this is complicated in structure, and also requires a spring constant adjustment according to the weight change of the loaded article. However, it is not easy to find a proper spring constant and there was a problem that spring vibration can continue to occur.

The present invention is to solve the problems as described above, an object of the present invention is to be able to move freely in all directions and to stably move the goods loaded in such a state that is always in close contact with the bottom surface even in the irregularities of the bottom surface, etc. To provide a wagon caster for the show.

Performance wagon caster according to an embodiment of the present invention includes a top plate fixed to the bottom of the wagon, having a lower plate having one or more wheels on the bottom and rotatably coupled to the top plate, bearing on the top surface of the bottom plate A fixed shaft is provided, and a lower surface of the upper plate is provided with a housing surrounding the bearing fixed shaft, and the upper plate and the lower plate are coupled to each other via a bearing interposed between the bearing fixed shaft and the housing.

In addition, the performance wagon caster further includes one or more spring ball members that complement the horizontal restoring force of the lower plate relative to the upper plate in a state fastened to the upper plate.

In addition, the spring ball member is a damper spring having a damper formed to absorb the vibration of the spring and the spring located therein, and the lower plate so that it can be maintained in a relatively rotatable state relative to the upper plate It includes a ball wheel provided at the bottom of the damper spring.

In addition, the ball wheel may be rolling on the lower plate in contact with the lower plate.

In addition, three wheels are provided at regular intervals along the lower circumference of the lower plate, and three spring ball members are provided at the same intervals.

The bearing is also a self-aligning ball bearing.

The performance wagon caster according to the present invention can maintain the relative restoring force of the upper and lower plates by using a self-aligning ball bearing.

In addition, by providing a spring ball member it is possible to supplement the restoring force in the horizontal direction is reduced by the bearing coupling of the upper and lower plates. Therefore, it is possible to provide a performance wagon caster that can move freely in all directions and to stably move the goods loaded in the state always in close contact with the bottom surface even in the unevenness of the bottom surface.

In addition, by using a ball wheel provided at the bottom of the spring ball member, it is possible to ensure the 360 degree rotation of the wheel at all times in the performance wagon.

1 is a diagram illustrating an example of a wagon.

2 is a view showing the configuration of the performance wagon caster according to an embodiment of the present invention.

3 is a cross-sectional view showing the internal configuration of the performance wagon caster of FIG.

4 is an enlarged view of the spring ball member of the performance wagon caster of FIG.

5 is a view showing the use and operation of the performance wagon caster of FIG.

6 shows a spring mechanism of a conventional wagon caster.

Hereinafter will be described a performance wagon caster according to an embodiment of the present invention.

The casters described below may be used in automated guided vehicles (AGVs) and the like, including wagons of any type. Wagons or AGVs are self-propelled vehicles that typically travel around a guided route in a factory, warehouse, or delivery center. In particular, when used in a performance or event, the wagon can be used to carry various equipment and luggage necessary for the performance, to move stage props or people in the stage space, or to be a moving stage by itself. The casters described below are not limited to specific types of wagons but may be used with any of the other types of wagons in addition to the example wagons described above.

2 is a view showing the main configuration of the performance wagon caster according to an embodiment of the present invention, Figure 3 is a cross-sectional view showing the internal configuration of FIG.

2 and 3, the performance wagon caster 200 according to an embodiment of the present invention includes an upper plate 220, a lower plate 240, and

spring ball members

260, 262, and 264.

The upper plate 220 is fixed to the lower part of the wagon, and may be fixed to the wagon by coupling bolts or the like to the plurality of bolt holes 221 formed around the center.

In the embodiment of the present invention, the upper plate 220 and the lower plate 240 are coupled via a bearing.

Specifically, the bearing fixing shaft 241 is provided at a substantially center of the lower plate 240, and the housing 223 is provided at the upper plate 220 to cover and surround the bearing fixing shaft 241. A ball bearing 243 may be mounted between the bearing fixed shaft 241 and the housing 223. That is, since the upper plate 220 and the lower plate 240 are coupled through the bearing 243, the lower plate 240 may be relatively freely rotated with respect to the upper plate 220. In this embodiment, the ball bearing 243 is used, but the present invention is not limited thereto. As described above, any bearing method in which the upper plate and the lower plate may be rotatably coupled to each other around the bearing fixed shaft may be applied.

As described above, the lower plate 240 rotatably coupled to the upper plate 220 has one or more wheels, for example, three

wheels

245, 247, 249 mounted on the lower side, so that the

driving wheels

144, 146 in the wagon are mounted. It distributes the load on the load and at the same time allows it to move freely in all directions.

In the embodiment of the present invention, the

wheels

245, 247, 249 are provided with three at regular intervals along the lower circumference of the lower plate 240. The three

wheels

245, 247 and 249 are designed to minimize rolling friction and can not only stably carry heavy loads but also keep the caster in close contact with the floor at all times.

On the other hand, the spring ball member (260, 262, 264) is able to complement the horizontal restoring force of the lower plate 240 with respect to the upper plate 220 in a state fastened to the upper plate 220. Spring ball members (260, 262, 264) a portion of the upper end is inserted into the fastening hole formed in the upper plate 220 may be fixed using a fastening means 261 or the like.

As described above, in the embodiment of the present invention, the upper plate 220 and the lower plate 240 are coupled via a bearing so that the lower plate 240 can be rotated relatively freely with respect to the upper plate 220, and the wagon is driven. The lower plate 240 may be twisted by a predetermined angle, for example, about 4 degrees, with respect to the bearing fixing shaft 241 according to the load of the test load and the state of the bottom surface. However, when this condition is repeated for a long time, the bearing fixing shaft 241 may be worn down and the life may be shortened, and the horizontal restoring force of the caster may be lowered, so that the loaded article may not be stably transported.

However, the

spring ball members

260, 262 and 264 of the present invention may be provided between the upper plate 220 and the lower plate 240 to compensate for the horizontal restoring force that is degraded due to the bearing coupling. That is, the

spring ball members

260, 262, and 264 elastically support the upper plate 220 with respect to the lower plate 240, and at the same time, are formed to enable rolling motion on the lower plate 240 to limit the movement of the lower plate 240. It is possible to supplement the resilience of the twisted angle without doing this will be described in detail below.

4 is an enlarged view of the spring ball member 260 of the performance wagon caster according to an embodiment of the present invention.

Referring to FIG. 4, the spring ball member 260 includes a damper spring 263 and a ball wheel 265.

The damper spring 263 can suppress the occurrence of spring vibration by inserting a damper that can absorb the vibration inside the spring.

The ball wheel 265 is provided at the bottom of the damper spring 263 so that the lower plate 240 can be maintained in a rotatable state. That is, the ball wheel 265 functions as another small caster in the spring ball member 260, and the ball wheel 265 can always roll on the lower plate 240 while being in close contact with the lower plate 240. have. Since the damper spring 263 is fastened to the upper plate 220, the ball wheel 265 rolls on the lower plate 240 in a constant circular trajectory according to the movement of the lower plate 240 which rotates.

In the embodiment of the present invention, as three

wheels

245, 247, and 249 are provided at regular intervals along the lower circumference of the lower plate 240, three

spring ball members

260, 262, and 264 at the same interval. It may be provided. Three

spring ball members

260, 262, and 264 are provided to balance the three

wheels

245, 247, and 249, and to stably carry a large load of load.

Hereinafter, the use and operation of the performance wagon caster 200 according to an embodiment of the present invention will be described.

For reference, each configuration for explaining the use of the performance wagon caster 200 and its operation according to an embodiment of the present invention for the convenience of the description reference numerals used while explaining the performance wagon caster 200 above. The same description will be used, and duplicate descriptions will be omitted.

Performance wagon caster 200 according to an embodiment of the present invention in the form of a three-wheel (245, 247, 249) to carry a large load of loads, such as in performances, events, or as a mobile stage carrying people It can be applied to the wagon to transport loads stably while minimizing rolling friction.

Referring to FIG. 1, the performance wagon caster 200 according to the embodiment of the present invention may be fixed to the bottom surface of the wagon 100 according to a preset arrangement without limit to the number suitable for the structure of the wagon.

Referring to FIG. 3, the upper plate 220 is fixed to the bottom of the wagon, and the lower plate 240 coupled to the upper plate 220 and the bearing 243 when the wagon is driven is relatively to the upper plate 220. It can be rotated freely from side to side. This is because three

wheels

245, 247, and 249 mounted at regular intervals along the outer circumference of the lower plate 240 freely move in accordance with the load of the load and the state of the bottom surface.

In this case, referring to FIG. 5, the upper plate 220 may be twisted by a predetermined angle, for example, about 4 degrees, with respect to the bearing fixing shaft 241, and three spring ball members 260 according to the twisted direction. 262 and 264 are elastically compressed or relaxed to find a horizontal balance. Spring ball member 260 is composed of a damper spring 263 and the ball wheel 265, it is possible to effectively absorb the continuous vibration that may occur while elastically supporting the upper plate 220 relative to the lower plate 240 At the same time, the cloud plate can be formed on the lower plate 240 to compensate for the twisting angle without restraining the movement of the lower plate 240. As a result, the wagon can always stably move the loaded articles and the like in close contact with the bottom surface.

As described above, the performance wagon caster 200 according to the embodiment of the present invention is provided with the spring ball member (260, 262, 264) horizontally reduced by the bearing coupling of the upper plate 220 and lower plate 240 The resilience of the direction can be compensated. Therefore, it is possible to provide a performance wagon caster that can move freely in all directions and to stably move the goods loaded in the state always in close contact with the bottom surface even in the unevenness of the bottom surface.

As described above, the performance wagon caster according to an embodiment of the present invention is a self-aligning ball bearing, that is, the inner ring has two rows of tracks and the outer ring tracks are spherical, the center of curvature of the spherical coincides with the bearing center , Inner ring, ball and retainer use self-aligning ball bearings that provide smooth caution to the outer ring, and also use spring ball members to prevent jamming problems and false angles of the instrument. Gives resilience.

In addition, by attaching a ball wheel at the bottom of the spring ball member to always contact the lower plate, to further ensure that the wheel rotates freely 360 degrees. In particular, when such a wagon is used as a performance equipment, it is particularly important to ensure that the wheels rotate freely 360 degrees in preparation for the wagon used in other industrial sites, because the performance is required to rotate more than 360 degrees due to its characteristics. Because it is frequent.

Although the embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and it is recognized that the present invention is easily changed and equivalent by those skilled in the art to which the present invention pertains. Includes all changes and modifications to the scope of the matter.

The present invention can be used for performance wagons, performance wagon casters, driverless carriages and the like.

Claims

Tops fixed to the bottom of the wagon, and

Lower plate having one or more wheels in the lower portion and rotatably coupled to the upper plate

Including;

A bearing fixing shaft is provided on an upper surface of the lower plate, and a housing surrounding the bearing fixing shaft is provided on a lower surface of the upper plate, and the upper plate and the lower plate are coupled to each other via a bearing interposed between the bearing fixing shaft and the housing. felled

Wagon casters for performances.
In claim 1,

The performance wagon caster further comprises at least one spring ball member to complement the horizontal restoring force of the lower plate relative to the upper plate in the state fastened to the upper plate.
In claim 2,

The spring ball member

A damper spring having a spring and a damper positioned therein to absorb vibration of the spring, and

A ball wheel provided at the bottom of the damper spring so that the lower plate can be maintained in a relatively rotatable state relative to the upper plate

Performance wagon caster comprising a.
In claim 3,

The ball wheel is a performance wagon caster capable of rolling motion on the lower plate in contact with the lower plate.
In claim 4,

Three wheels are provided at regular intervals along the lower circumference of the lower plate, and three spring ball members are provided at the same interval.
In claim 1,

The bearing is a performance wagon caster is a self-aligning ball bearing.