JPH0665005U - Casters for automated guided vehicles - Google Patents

Abstract

(57) [Summary] [Purpose] An emergency caster that is used only when there is a failure can be attached to and detached from the body frame of an automated guided vehicle, and can be installed and used only when it cannot run due to some failure. Providing first aid casters. [Structure] An upper part of a caster body 2 to which a caster tire 1 is attached is rotatably fitted to a housing 4 via a bearing 3, and four corners of a frame 11 of an automated guided vehicle 10 are attached to an upper surface of the housing 4. This is an emergency caster for an unmanned guided vehicle, in which detachable frame fixing parts 5a and 5b are provided in a protruding manner on the parts.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This device is installed in the lower part of the vehicle body as a temporary measure when the automatic guided vehicle becomes unable to run due to some trouble and cannot be moved by towing, etc. It is related to an emergency caster that can be evacuated from.

[0002]

[Prior art]

 In an unmanned guided vehicle that travels unattended in factories and warehouses, it is customary to apply a brake to ensure safety when the drive wheels and their control system fail.

[0003] In addition to when the drive wheels are braked and the vehicle is unable to run, it is conceivable that any movement such as self-propelling or towing may be disabled as a serious failure, for example, the brake cannot be released due to disconnection. In these cases, most of the failures cannot be recovered on-site.

In such a case, unless the failed automatic guided vehicle is swiftly evacuated from the guidance traveling area, the failed automatic guided vehicle becomes an obstacle and interferes with the transportation system.

As means for moving a faulty unmanned guided vehicle, it is possible to scoop up with a manned forklift or lift with a crane. However, in the unmanned guided system, the traveling space is set to a minimum. It is not always possible to reach a point where the forklift can scoop, and it is not necessary to install a crane so as to cover the entire guided driving area because of the construction and cost of the building. From the point of view, it is extremely difficult.

Therefore, it is conceivable to provide an emergency caster that is used only in the event of such a failure, but if this emergency caster is built in each unmanned guided vehicle, the casters for the number of guided vehicles are prepared. In the case of a system using a large number of unmanned guided vehicles, the number becomes considerable.

However, the above-mentioned serious failure rarely occurs, and the frequency of use of the emergency casters built into the carrier is extremely low. Therefore, it is not possible to prepare a large number of casters for emergency use. There is a problem that it is wasteful and, on the contrary, it is uneconomical because maintenance and inspection are troublesome.

[0008]

[Problems to be solved by the device]

 The present invention has been made to solve the above problems, and an emergency caster used only in case of a failure can be attached to and detached from the body frame of an automated guided vehicle, and only when necessary. The aim is to provide an emergency caster that can be installed and used each time.

[0009]

[Means for Solving the Problems]

 The present invention has been made to solve the above-mentioned problems, and the upper portion of a caster body 2 to which a caster tire 1 is attached is rotatably fitted to a housing 4 via a bearing 3. A caster for an automatic guided vehicle is characterized in that frame fixing portions 5a, 5b which can be freely inserted into and removed from the four corners of a frame 11 of the automatic guided vehicle 10 are provided on the upper surface of the housing 4 as a gist of the invention. It is a thing.

[0010]

[Action]

 Since the casters of this invention can be freely attached to and detached from the four corners of the frame 11 of the automatic guided vehicle 10, when the automatic guided vehicle 10 is unable to run due to some trouble, the lifting means such as a jack lifts the vehicle body. The unmanned guided vehicle can be moved to the required place by lifting the broken wheel and mounting the caster of the present invention.

[0011]

【Example】

 FIG. 1 is an overall schematic view of a caster, in which (a) is a plan view and (b) is a partially cutaway side view. FIG. 2 is a bottom view showing a state of attachment to an automated guided vehicle.

In the figure, reference numeral 1 denotes a compound wheel caster tire, which is attached to a leg portion 2 a of a caster body 2. The upper portion of the caster body 2 is rotatably fitted to the housing 4 via a bearing 3 so that it can be rotated 360 ° about the axis A, and a cross hole 2b for positioning is formed. There is.

On the upper surface 4 a of the housing 4, frame fixing portions 5 a and 5 b that can be fitted into the frame 11 of the automatic guided vehicle 10 are provided in a protruding manner. Each of the frame fixing portions 5a and 5b is composed of two projecting pieces, and the frame fixing sections 5a and 5b are provided in different 90 ° directions so that they can be fitted to the four corner edges of the vehicle body frame 11 through the projecting pieces. There is.

Numeral 6 is a snap ring-shaped clamp which is arranged on the peripheral wall of the housing 4 at equal intervals (six in this embodiment), and numeral 7 is an L-shaped caster direction fixing pin. By inserting the horizontal portion 7a of the fixing pin 7 into an arbitrary cross hole 2b of the caster body 2 and fitting the vertical portion 7b into an arbitrary clamp 6 of the housing 4, the caster body 2 is attached to the housing 4 Fixed to.

Reference numeral 8 denotes a frame fixing bolt for pressing and fixing to the four corner edges of the vehicle body frame 11 fitted between the projecting pieces of the frame fixing portions 5a and 5b.

Reference numeral 9 denotes a steering rod, the tip end portion 9 a of which can be freely inserted into and removed from the cross hole 2 b of the caster body 2. The fixing pin 7 is pulled out from the cross hole 2 a, and instead the steering rod 9 is removed. The direction of the caster body 2 can be freely changed by inserting it.

Due to the above-described structure, in order to attach the casters to the automatic guided vehicle 10, first, the vehicle body of the automatic guided vehicle is lifted by a jack or the like, and the frame fixing portions 5a and 5b and the four corners of the vehicle body frame 11 are separated. After the alignment is performed, the jack is lowered, the four corner edges of the vehicle body frame 11 are fitted in the gaps between the projecting pieces of the frame fixing portions 5a and 5b, and the bolts 8 are pressed and fixed.

To explain an actual use example with reference to FIG. 2, among the four casters attached to the four corners of the frame 11 of the automatic guided vehicle 10, the casters a and b in the forward direction (arrow) are oriented. , Are fixed by fixing pins 7 as shown in the figure. Further, of the rear casters c and d, a steering rod 9 is attached to the caster c, and the operator can freely adjust its direction. The caster d does not have to attach the fixing pin 7 or the steering rod 9 and is free. To be able to rotate to.

In this state, if the operator adjusts the direction of the caster c with the steering rod 9 and pulls or pushes the caster c, the direction of c of the rear casters c and d can be arbitrarily adjusted. Since d follows any direction, it is possible to easily move the automatic guided vehicle 10 to an arbitrary point.

[0020]

【effect】

 According to this invention, the upper portion of the caster body 2 to which the caster tire 1 is attached is rotatably fitted to the housing 4 through the bearing 3, and the frame of the automatic guided vehicle 10 is mounted on the upper surface of the housing 4. Even if the automatic guided vehicle 10 becomes incapable of running due to some trouble, the casters of the present invention should be installed as a temporary measure even if the fixed parts 5a and 5b are provided on the four corners of the frame 11 so that they can be fitted and removed. This makes it possible to move the automated guided vehicle to the required location.

[Brief description of drawings]

FIG. 1 is an overall schematic view of a caster, in which (a) is a plan view and (b) is a partially cutaway side view.

FIG. 2 is a bottom view showing a state of attachment to an automated guided vehicle.

[Explanation of symbols]

 1 Castor tire 2 Castor body 3 Bearing 4 Housing 5 5a, 5b Frame fixing part 6 Clamp 7 Fixing pin 8 Frame fixing bolt 9 Steering rod 10 Automated guided vehicle 11 Frame

Claims (4)

[Scope of utility model registration request] 1. A caster body (2) having caster tires (1) mounted thereon is rotatably fitted to a housing (4) through a bearing (3), and an upper surface of the housing (4). In addition, the frame fixing part (5) that can be freely inserted into and removed from the four corners of the frame (11) of the automated guided vehicle (10).
a) A caster for an automated guided vehicle, characterized in that (5b) is projected. 2. The frame fixing parts (5a), (5b) are each composed of two projecting pieces, and the projecting pieces can be fitted to the edges of the four corners of the vehicle body frame (11) so as to be fitted to each other.
The caster for an automated guided vehicle according to claim 1, wherein the casters are provided in different directions by 90 °. 3. A cross hole (2b) is formed around the caster body (2), and a plurality of clamps (6) are attached around the housing (4) to fix the L-shaped fixing pin (7). By inserting the horizontal portion (7a) into an arbitrary cross hole (2b) of the caster body (2) and fitting the vertical portion (7b) into an arbitrary clamp (6) of the housing (4), the caster body ( 2) orientation to housing (4)
The caster for an automated guided vehicle according to claim 1 or 2, which can be fixed to the caster. 4. The cross hole (2b) of the caster body (2).
A caster body (2) is provided with a steering rod (9) having a tip portion (9a) which can be freely inserted and removed, and the tip portion (9a) of the steering rod (9) is fitted into the cross hole (2b). The caster for an automatic guided vehicle according to claim 3, wherein the direction of the guide is manually adjustable.