JP2546908Y2 - Carrier - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrier having a body frame formed of a hollow base frame.

[0002]

2. Description of the Related Art Such a transport vehicle is used, for example, in an article transport facility, and is configured so that various devices provided in the transport vehicle are driven by electric power from a power storage unit mounted on the transport vehicle. ing. For this reason, a considerably large-capacity power storage unit is required.
As disclosed in Japanese Unexamined Patent Publication, a dedicated space for accommodating the power storage unit is secured above the carrier and stored in the dedicated storage space.

[0003]

Therefore, the conventional transporting vehicle requires a dedicated space for storing the power storage unit, which is detrimental in reducing the size and weight of the vehicle body. In the case where the power storage unit is mounted, there is a possibility that the center of gravity of the transport vehicle becomes high and becomes unstable due to the presence of the power storage unit which is heavy. The present invention has been made in view of the above circumstances, and its purpose is to review the space for storing the power storage unit, reduce the size and weight of the vehicle body, and furthermore, without impairing the stability of the vehicle body. Another object of the present invention is to provide a transport vehicle that can be stored and that can easily handle the power storage unit.

[0004]

According to a first aspect of the present invention, there is provided a transport vehicle in which a vehicle body frame is formed of a hollow base frame. A rectangular cylindrical base frame is positioned at the bottom of the carrier, and a receiving table is provided which can be inserted into and removed from the inside of the base frame along the longitudinal direction of the base frame. In addition, a large number of power storage units are arranged side by side along the longitudinal direction of the base frame and housed inside the base frame. A second characteristic configuration is that two base frames are positioned parallel to the bottom of the transport vehicle, and the power storage unit is housed inside each base frame. The third characteristic configuration is
The present invention is characterized in that engaging portions for assembling various devices are provided on the outer wall surface of the base frame.

[0005]

According to the first characteristic configuration of the present invention, the hollow base frame is constituted by a rectangular tube having a rectangular cross section, and a large number of power storage units are provided along the longitudinal direction of the rectangular tube base frame. Since it is housed inside, the power storage unit can be housed by effectively utilizing the hollow space inside the base frame, eliminating the need for a dedicated storage space, and reducing the size and weight of the vehicle body. In addition, by positioning the base frame that houses the power storage unit at the bottom of the transport vehicle, the relatively heavy power storage unit can be positioned below and the center of gravity of the transport vehicle can be stabilized.
In addition, since a large number of power storage units are housed inside the base frame, it is easy to handle the individual power storage units while securing necessary electric power. In addition, in the longitudinal direction of the base frame with respect to the inside of the base frame. It is provided with a receiving stand that can be inserted and removed along, and a large number of power storage units are stored side by side on the receiving stand,
At the time of replacement of the power storage unit or the like, by pulling out the cradle along the longitudinal direction of the base frame, a large number of power storage units can be pulled out at once, and handling of the power storage unit is further facilitated. Second
According to the characteristic configuration, two of the base frames are positioned parallel to the bottom of the carrier and the power storage unit is stored inside each base frame. Therefore, the storage capacity of the power storage unit is increased, and Not only power can be supplied, but also the center of gravity of the carrier becomes more stable as the number of power storage units increases. According to the third characteristic configuration, since the engaging portions for assembling various devices are provided on the outer wall surface of the base frame that stores the power storage unit, various devices necessary for the transport vehicle can be engaged with the engaging portions of the outer frame surface of the base frame. It is possible to assemble by using, it is not necessary to separately provide equipment for assembling various devices, and since the base frame is located at the bottom of the carrier as described above, driving wheels for traveling etc. In particular, when two base frames are positioned in parallel, the drive wheels and the like can be stably mounted over the two base frames.

[0006]

According to the first characteristic configuration, since a large number of power storage units are stored by effectively utilizing the hollow space inside the rectangular cylindrical base frame, a dedicated storage space is not required and the body is made compact. In addition to being able to reduce the weight and stabilizing the center of gravity of the transport vehicle by positioning the base frame at the bottom of the transport vehicle, it is also easy to handle individual power storage units, By arranging and storing a number of power storage units side by side on a receiving table that can be inserted into and removed from the base frame, a number of power storage units can be pulled out at once, and handling of the power storage units is further facilitated. According to the second characteristic configuration, two base frames are positioned parallel to the bottom of the transport vehicle, and a power storage unit is housed inside each base frame. It can be maintained stably. According to the third characteristic configuration, it is possible to assemble various devices necessary for the transport vehicle by using the engaging portion of the outer surface of the base frame and stably assemble driving wheels for traveling. Become.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 5, the article transport equipment of the present invention includes a transport vehicle A that travels along a travel line G provided on a travel surface, and a plurality of stations S.
In addition, 1 to 5 are added to the reference symbol S to distinguish these stations S from each other.

In this article transport facility, when there is no article in each of the stations S3 to S5 on the article receiving side, the operator operates the console V to instruct an article request (including the identification information of the requesting station). ), The instruction is transmitted to the central control unit U, and the central control unit U transmits a transfer work instruction of the carrier A to the home station HP based on the instruction of the article request.

The transfer work instruction is transmitted to the home station H.
Based on the transfer work instruction, the transport vehicle A receives the specified article from the station S1 on the article supply side.
Or, it is collected in S2 and designated station (S3 ~
(Any of the stations in S5). Although not shown, the home station HP is provided with a home station communication device for communicating with the carrier communication device 52.

[0010] As shown in FIGS.
An article transfer apparatus 1 for transferring an article E, a body frame 2 supporting the article transfer apparatus 1 and the like, a pair of front and rear drive wheels 3, and a driven wheel 4 as a pair of left and right caster wheels.
And control means 5 on the carrier side. Furthermore,
The carrier A is provided with a traveling line detecting optical sensor 51 for detecting the traveling line G, a carrier-side communication device 52, and an optical sensor 53 for confirming a stop position. Reference numeral 5 is configured to control the operations of the article transfer device 1, the driving wheel 3, the traveling line detecting optical sensor 51, the carrier side communication device 52, and the stop position confirming optical sensor 53.

The station S has a support 61 for supporting the article E, a reflector 62 for reflecting light from the stop position confirmation optical sensor 53, a station side communication device 63,
Optical sensor 64 for detecting the presence or absence of article E on supporting portion 61
And a station-side control device 6 for controlling the operation of the station-side communication device 63 and the optical sensor 64.

Hereinafter, each device will be described. As shown in FIG. 4, the article transfer device 1 includes a tip fork 1 serving as a loading platform.
a, an intermediate fork 1b, a base 1c, and a lifting drive 1d. The tip fork 1a is slidably driven laterally with respect to the intermediate fork 1b, and the intermediate fork 1b is slidably driven laterally with respect to the base 1c. The base 1c is a lifting drive device 1.
It is configured to be driven up and down by d. When collecting the article E on the support portion 61 of the station S, the tip fork 1a and the intermediate fork 1b are protruded below the article E, and then the base 1c is raised by the lifting drive 1d. When the articles E are collected and the articles E are supplied, the reverse operation is performed.

As shown in FIGS. 1 to 3, the body frame 2 is formed of a hollow base frame 21 having a rectangular cross section having a rectangular cross section. It is arranged and located at the bottom of the transport vehicle A, and on the outer wall surface of each base frame 21,
An engaging portion F for assembling various devices (such as an article transfer device 1, a driving wheel 3, a driven wheel 4, an optical sensor 51 for detecting a traveling line, a carrier side communication device 52, and an optical sensor 53 for confirming a stop position) is provided. Have been. Inside each base frame 21, there are provided receiving bases 22 which can be inserted into and removed from the inside of the base frame 21 along the longitudinal direction of the base frame 21.
Are juxtaposed along the longitudinal direction of the base frame 21 so that the base frame 21
Is housed inside. At the bottom of the cradle 22,
As shown in FIG. 3, a protrusion 22 a that fits into a rail groove 21 a provided on the inner wall surface of the base frame 21 is provided. In other words, the projection 22a is slid with respect to the rail groove 21a to insert and remove the receiving table 22.

The various devices (article transfer device 1, driving wheel 3, control device 5, traveling line detecting optical sensor 51, carrier-side communication device 52, The stop position confirmation optical sensor 53 and the like are driven. In the figure, reference numeral 23 denotes a positive electrode of the power storage unit Z;
Denotes a negative electrode, and charging of the plurality of power storage units Z is performed via the plus and minus electrodes 23 and 24 (although not described in detail, each electrode of the plurality of power storage units Z is connected to each other). ing). In the figure, reference numeral 25 denotes a base frame 21 of the power storage unit Z.
And Q is a rotation center of the driven wheel 4.

As shown in FIGS. 1 and 2, a pair of wheels 31A, 31 are arranged at intervals in the direction of the axis of rotation.
B and a wheel support frame 33 that supports motors 32A and 32B that respectively drive these wheels 31A and 31B,
The bearing 34 and the frame 3 are rotated so as to rotate around a vertical axis P located at the center between the pair of wheels 31A and 31B.
5 and is attached across two body frames 2 located at the bottom of the transport vehicle A. Therefore, when the transport vehicle A travels straight, the control means 5 of the transport vehicle A is configured to run by rotating the motors 32A and 32B in the same direction at the same rotational speed. When the traveling direction is changed, that is, when the turning travel is performed, the turning travel is performed by setting each of the motors 32A and 32B to a different rotation speed. The motors 32A, 32B are connected to the motors 32A, 3B.
An encoder (not shown) for detecting the number of rotations of each of the motors 2B and a motor drive circuit (not shown) for driving each of the motors 32A and 32B are built in. The control means 5 drives the motor based on the output of the encoder. It is configured to control the circuit.

Next, a process in which the transport vehicle A stops at the station S and recovers the article E on the station S or a process for supplying the article E on the station S will be described with reference to the flowchart of FIG. I do. First, the transport vehicle A stops at a predetermined position in front of the station S. Then, the optical sensor 53 for confirming the stop position and the station S
After a stop at a predetermined position is confirmed by the reflection plate 62 provided in the printer, the transfer operation corresponding to the transfer operation command is performed. When it is determined that the transport vehicle A is not stopped at a predetermined position, the transport vehicle A is moved back and forth to correct the stop position.

If the content of the transfer operation command is to collect the article E on the station S, the carrier-side control device 5 informs the carrier-side communication device 52 that the article E is to be collected. The data is transmitted to the station-side control device 6 via 63. The station-side control device 6 that has received the notification that the article E is to be collected operates the optical sensor 64 to activate the support unit 6.
The presence / absence of the article E on 1 is detected, and the detection result is transmitted from the station side communication device 63 to the carrier control device 5 via the carrier communication device 52. And the support part 6
If it is determined that there is an article E on 1, the article transfer device 1 is driven to collect the article E on the station S.
If it is determined that there is no article E on the support portion 61, the collection operation of the article E is stopped.

If the content of the transfer operation command is to supply the article E to the station S, communication between the carrier-side control device 5 and the station-side control device 6 is performed in the same manner, and the If it is determined that there is no article E, the article transfer device 1 is driven to supply the article E on the station S. If it is determined that the article E is on the support portion 61, the supply operation of the article E is stopped.

[Alternative Embodiment] The transport vehicle A of the above embodiment is configured to travel along a travel line G provided on a travel surface, but the transport vehicle A is provided with a moving direction detecting device such as a gyro. And a moving distance detecting device that detects the moving distance of the moving vehicle, and obtains the current position of the moving vehicle from the detection information of these detecting devices,
You may make it drive a mobile vehicle according to the course set beforehand. In the above embodiment, a mark of stop position information using a light reflecting tape, a magnetic tape, or the like is provided on the traveling road surface,
The carrier A may be accurately stopped at a predetermined position based on the information of the mark. In the above embodiment, articles are transferred using a fork, but the transfer method can be variously changed. For example, a roller conveyor is provided on the transport vehicle A and the station S, and the support F placed on the roller conveyor of the transport vehicle A is pushed out in the direction of the station S, and the roller F is placed on the roller conveyor of the station S. A push-pull device having the function of pulling the support F onto the carrier may be used.

In the claims of the utility model registration, reference numerals are written for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a side view of an article transport vehicle.

FIG. 2 is a plan view of an article carrier.

FIG. 3 is a cross-sectional view of a body frame of the article transport vehicle.

FIG. 4 is a block diagram showing a control configuration of the article transport facility.

FIG. 5 is an explanatory diagram of traveling of an article transport vehicle.

FIG. 6 is a flowchart.

[Explanation of symbols]

 2 body frame 21 base frame 22 cradle F engaging part Z power storage part

Claims (3)

(57) [Scope of request for utility model registration] The vehicle body frame (2) has a hollow base frame (2).
1) wherein the base frame (21) is a rectangular tube having a rectangular cross section,
Position the cylindrical base frame (21) at the bottom of the carrier,
Along the inside of the frame (21), along the longitudinal direction of the base frame (21).
And a receiving stand (22) which can be freely inserted and removed.
2) On the base frame (21), a large number in a state along the longitudinal direction of the base frame (21)
Power storage units (Z) are juxtaposed and housed inside the base frame (21).
The transport vehicle that is stored. 2. The base frame (21) is provided two at the bottom of the carrier.
The power storage unit is positioned inside each base frame (21).
The carrier according to claim 1, wherein (Z) is stored . 3. The transport vehicle according to claim 1, wherein an engaging portion (F) for assembling various devices is provided on an outer wall surface of the base frame (21).