JPH0665906U - Automated guided vehicle - Google Patents

Abstract

(57) [Abstract] [Purpose] An unmanned guided vehicle having a structure in which a harness provided between a turntable to which front wheels, which are driving wheels, are attached and a guided vehicle body does not come loose and come into contact with the floor surface. I will provide a. [Structure] A rotary base 4 which is rotatable around a vertical axis is provided in the front part of a main body 1 of a carrier, and a front wheel and a motor 6 for driving the front wheel are fixed to the rotary base 4, and a rear part is provided with a carrier. A rear wheel for supporting the car body 1 is provided, one end of the cable bear 10 is coupled to the carrier car body 1, and the other end thereof is one pivot plate 11b of the hinge 11 having a pivot shaft extending in the vertical direction. And the other rotating plate 11a is connected to the rotating base 4, and a harness for connecting a battery (not shown) provided in the transport vehicle main body 1 to the motor 4 or the like on the rotating base 1 is connected to the cable carrier. It is housed inside 8.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automated guided vehicle, which prevents the harness from contacting the floor surface.

[0002]

[Prior art]

 An automated guided vehicle is used to transport the work. Figure 7 shows the configuration of a conventional automated guided vehicle. As shown in the figure, a single front wheel 2 is provided in the center on the left side in the figure, which is the front of the carrier body 1. A pair of rear wheels 3 are provided on the right side in the figure, which is behind the carrier body 1. As shown in FIG. 8, the front wheels 2 are provided on a turntable 4 which is rotatable about a vertical axis, and the turntable 4 is steered by turning the turntable 4 about the vertical axis. Motor 5 for driving the front wheels 2, a motor 6 for driving the front wheels 2, and a guide (not shown) provided on the floor surface, and the control means (not shown) steers the turntable 4 to control the direction of the front wheels 2. A traveling sensor 7 for transmitting a signal for providing the signal is provided, and the harness 8 electrically connects between the battery of the vehicle body 1 and the control means and the equipment of the turntable 4. Since this harness 8 is configured to rotate the turntable 4 in the positive and negative directions by 95 ° to change the direction of the automatic guided vehicle, even if the turntable 4 rotates a total of 190 °, the harness 8 is rotated. It is provided so as to be loosened in a substantially J shape so that it will not be pulled. In addition, 9 is a front bumper.

In such an automatic guided vehicle, when turning right, the turntable 4 turns clockwise in FIG. 8 to extend the harness 8, and when turning left, it turns counterclockwise to move the harness 8. It becomes smaller by being bent in an S-shape in opposite directions.

[0004]

[Problems to be solved by the device]

 However, in order to allow the harness 8 to be bent in an S shape, it is lengthened and loosened to a large J shape, but the amount of slackening is too large, so that the harness 8 can be bent when the vehicle is straight ahead. There is a risk that the intermediate portion will contact the floor surface. Further, since the harness 8 is long, the harness 8 may be caught by the motor 6 or the traveling sensor 7 and may be broken. In addition, a skilled assembler is required to prevent the above fear.

Therefore, the present invention aims to provide an automatic guided vehicle that solves the above problems.

[0006]

[Means for Solving the Problems]

 In order to achieve such an object, the structure of the present invention is provided with a rotary base which can be rotated around a vertical axis in either one of the front and rear of the carrier body, and the drive wheel and the drive wheel are attached to the rotary base. The drive means for driving the drive wheels is fixed, and the other side is provided with wheels for supporting the main body of the transport vehicle, and the battery and the like provided in the main body of the transport vehicle and the drive means of the turntable are connected via a harness. In an unmanned guided vehicle that is connected by means of a cable carrier, one end of the cable bear is connected to the main body of the guided vehicle, and the other end is connected to one of the hinge plates with a pivot shaft extending in the vertical direction and the other end. The turning plate is connected to the turning table, and the harness is housed inside the cable bear.

[0007]

[Action]

 When the automatic guided vehicle moves forward, the shafts of the wheels extend in the left-right direction. When the turntable is turned in one direction and turned in one direction, the hinge part turns, so that the cable bear is not complicatedly bent into an S-shape and the cable is Since the bare is not as long as before, the middle part of the cable bare does not come into contact with the floor. Next, when the turntable is turned in the other direction to turn the turntable in the other direction, the cable bear is in the most extended state. Even in this state, since the hinge part does not rotate and the cable bear is not bent, the cable bear is not pulled even if the cable bear is shorter than before.

[0008]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. Since the present embodiment is an improvement of a part of the conventional automated guided vehicle, the same parts as those of the conventional art are designated by the same reference numerals, and the description thereof will be omitted. Only different parts will be described.

The construction of the automatic guided vehicle according to the present invention is shown in FIG. FIG. 4 is a front view of the automatic guided vehicle as seen from the front thereof. As can be seen by referring to FIGS. 1 to 3, an outer peripheral portion of one end of the tube-shaped cable bear 10 is coupled to the carrier body 1, and an outer peripheral portion of the other end thereof is coupled to the turntable 4. There is. The structure of the connecting portion between the cable carrier 10 and the turntable 4 will be described in detail below.

As shown in FIG. 1, the cable carrier 10 and the turntable 4 are connected via a hinge 11. The hinge 11 is composed of one rotating plate 11a connected to the rotating base 4 via the auxiliary metal fitting 12 and the other rotating plate 11b connected to the end portion of the cable bear 10 via the auxiliary metal fitting 13. The rotary plate 11a and the rotary plate 11b are relatively rotatable about a vertical axis. The auxiliary metal fitting 12 is bent as shown in FIG. 5, and has a base portion 12a for connecting to the turntable 4 and an end portion 12b for connecting the hinge 11 and a stopper portion 12c for stopping the rotation of the hinge 11. Composed of and. As shown in FIG. 4, the auxiliary metal fitting 12 is coupled to the turntable 4 via the two bolts 14 inserted into the mounting holes 12d of the base 12a, and the two bolts 15 inserted into the mounting holes 12e of the end 12b. One rotating plate 11 a of the hinge 11 is connected to the auxiliary metal fitting 12 via the. On the other hand, the auxiliary metal fitting 13 is formed in an L-shape as shown in FIG. 6, and the other rotating plate 11b of the hinge 11 is connected via two bolts 16 inserted through the mounting hole 13a. . The end of the cable bear 10 is coupled to the portion of the auxiliary metal fitting 13 that protrudes above the auxiliary metal fitting 12 via two bolts 17 inserted into the mounting holes 13b. A harness (not shown) for connecting the battery (not shown) or control means mounted on the carrier body 1 to the motor 5, motor 6, and traveling sensor 7 mounted on the turntable 4 is provided inside the cable carrier 10. Be accommodated.

Next, the operation of the automatic guided vehicle will be described. When the automatic guided vehicle moves forward, the axis of the front wheel 2 extends in the left-right direction in the figure as shown in FIG. 1, the pair of rotating plates 11a and 11b forming the hinge 11 are closed and become substantially parallel, and the cable carrier 10 Will be approximately J-shaped. Next, when the rotary base 4 is rotated counterclockwise by the driving force of the motor 5 to turn to the left as shown in FIG. 2, the pair of rotary plates 11a and 11b remain closed as described above. However, the cable carrier 10 has a substantially U shape. At this time, since the cable bear 10 is not as long as the conventional harness, the middle portion of the cable bear 10 does not come into contact with the floor surface. In other words, since the hinge 11 rotates, the cable bear 10 does not need to be long enough to form an S shape as in a conventional harness. There is no such thing as touching a surface. Next, when the rotating base 4 is rotated clockwise by the driving force of the motor 5 to turn to the right as shown in FIG. 3, the hinge 11 opens, but the stopper portion 12c of the auxiliary metal fitting 12 exists. Therefore, the angle formed by the pair of rotating plates 11a and 11b does not become larger than a certain value and becomes about 90 °. At this time, the cable bear 10 is in the most extended state. Even in this state, since the hinge 11 rotates and opens, the cable carrier 10 is not pulled even if the length of the cable carrier 10 is shorter than that of the conventional harness.

In the bottom of the present embodiment, the driving wheel that can change direction is the front wheel, but the driving wheel may be the rear wheel.

[0013]

[Effect of device]

 As can be seen from the above description, according to the automatic guided vehicle of the present invention, since the hinge is interposed between the swivel base and the cable bear, the swivel base is rotated when the automatic guided vehicle turns left and right. Even if the cable bears move, the bends in the cable bears are less likely to occur than in the past, so even if the length of the cable bears is short, it is sufficient. There is no chance that it will be caught in the car or the travel sensor. Further, since the harness can be simply inserted through the cable carrier, it is easy to process the harness when assembling the automatic guided vehicle.

[Brief description of drawings]

FIG. 1 is an operation explanatory view of an automated guided vehicle according to the present invention in a forward state.

FIG. 2 is an operation explanatory view of the automatic guided vehicle according to the present invention in a left turning state.

FIG. 3 is an operation explanatory view of the automatic guided vehicle according to the present invention in a right turning state.

FIG. 4 is a front view of an automatic guided vehicle according to the present invention.

5A is a plan view and FIG. 5B is a front view.

6A and 6B are plan views and FIG. 6B is a front view of the auxiliary metal fittings.

FIG. 7 is a plan view of a conventional automated guided vehicle, FIG.
(B) is a front view.

FIG. 8 is an explanatory diagram of a main part of a conventional automated guided vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Transport vehicle main body 2 ... Front wheel 3 ... Rear wheel 4 ... Rotation table 5, 6 ... Motor 7 ... Travel sensor 8 ... Harness 10 ... Cable bear 11 ... Hinge 11a, 11b ... Rotation plate

Claims (1)

[Scope of utility model registration request] 1. A rotary base that is rotatable around a vertical axis is provided in either one of the front and rear of the main body of the transport vehicle, and the drive wheels and the drive means for driving the drive wheels are fixed to the rotary base. On the other hand, a wheel for supporting the main body of the transport vehicle is provided on the other side, and in an automatic guided vehicle in which a battery or the like provided in the main body of the transport vehicle is connected to a driving means of the turntable via a harness, One end is connected to the main body of the transport vehicle, the other end is connected to one rotating plate of a hinge having a rotating shaft extending in the vertical direction, and the other rotating plate is connected to a rotating base to form a cable carrier. An automated guided vehicle characterized by having a harness housed inside.