JPS647910B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an article carrier equipped with an article transfer device.

The article transport trolley supplies articles to the work machine, or receives the articles from the work machine, and transports them to another work machine or station. Conventionally, this work was carried out using an automatic pallet changer, but installing such equipment around the work equipment takes up space in the work place, and
Furthermore, since it restricts the layout of the entire workshop and requires one automatic pallet changer for each work machine or station, there is also a problem in terms of economy.

The present invention has been made in view of the above-mentioned circumstances, and embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of an article carrier with a transfer device according to the present invention.

The transport vehicle 1 has a pair of left and right drive wheels 2 in its center.
Support wheels 3 are provided at the front and rear of each of the drive wheels, which are biased in the direction of contact with the ground and supported rotatably around a vertical axis.

Furthermore, antennas 4 for detecting guide wires (not shown) buried in the travel course are provided at the front and rear of the lower part of the transport vehicle 1 to guide the transport vehicle 1 as it travels. A bumper 5 and a connector terminal board 6 for manual operation are installed at the front and rear of the transport vehicle 1, respectively.

The terminal board 6 is provided with a manual operation connector, a reset button, an oil level abnormality indicator light, etc.

In addition, sensors 7 are provided at the front and rear of the lower part of the transport vehicle 1 to detect metal pieces buried in the travel course in order to position the station S and the transport vehicle 1.
is provided. Then, it is raised and lowered by hydraulic cylinders 8 at four locations on the front, rear, left and right sides of the lower part of the transport vehicle 1, and is fitted into cones (not shown) buried in the travel course to position the station etc. and the transport vehicle 1. A centering cone 9 is provided to stabilize the transport vehicle 1 during the transfer of articles.

FIG. 2 is a front view of the transport vehicle of the present invention. A pair of frames 14 are installed on a fixed table 10 at the upper part of the transport vehicle 1, on which a roller conveyor 13 is mounted, which serves as a guide for transporting the article pallets 11 or 12 in the left-right direction of the vehicle body of the transport vehicle 1.

Furthermore, a movable table 15 is mounted at the center of the upper part of the transport vehicle 1, and is moved up and down with respect to the fixed table 10 by a hydraulic cylinder or motor drive.

A tool pallet 1 is placed on the movable table 15.
A pair of frames 17 on which 6 is placed are provided.

Further, as shown in FIG. 1, a transfer device 19 equipped with a locking pin 18 for locking the article pallet 11 or 12 is mounted on the movable table 15.

FIG. 3 is a plan view of the transport vehicle of the present invention. The roller conveyor 13 includes four rows of guide rollers 20a, 20b that are rotatable around a vertical axis and four rows of guide rollers 21 that are rotatable around a horizontal axis.
a, 21b, the article pallet 11 or 12
This serves as a guide for transporting the material in the left and right directions of the vehicle body. As shown in FIG. 4, the small pallets 11 are guided by two inner rows of guide rollers 20a and 21a among the four rows, and the large pallets 12 are guided by two outer rows of guide rollers 20b and 21b. be done.

FIG. 4 shows a partially cutaway sectional view of the transfer device. The locking pin 18 of the transfer device 19 mounted on the movable table 15 rises as the movable table 15 rises, and the locking pin 18 of the transfer device 19 mounted on the movable table 15 rises, and the locking pin 18 of the transfer device 19 mounted on the movable table 15 rises, and the locking pin 18 of the transfer device 19 mounted on the movable table 15 rises, and the locking pin 18 of the transfer device 19 mounted on the movable table 15 rises.
It is fitted into a locking hole 22 formed in the article pallet 11 or 12 placed on the article pallet 11 or 12.

Conversely, as the movable table 15 descends, the locking pin 18 separates from the locking hole 22.

Further, a clamp cylinder 24 for fixing the pallet 11 or 12 is provided on one side of the frame 14 via a bracket 23. Sensors 25 for detecting the presence or absence of the pallets 11 or 12 are provided at four locations on the frame 14 via brackets 26, respectively.

The transfer device 19 is equipped with a motor 27 and a gearbox 28 at the bottom, and a base 29, a middle 30, and a top plate 31 on which a locking pin 18 is mounted are connected with gears on the gearbox 28, respectively, so that they can be moved relative to each other. is attached to.

As shown in FIG. 5, the movable table 13 is installed at four locations on the base 29 of the transfer device 19.
Supported by a frame 32 erected from above,
Gearbox 2 fixed to the lower part of the base 29
8 includes a gear 34 fitted into the shaft 33 of the motor 27 and fixed with a key, and gears 36 rotatably supported via bearings 35 and meshing in sequence.
37 and 38, and a rack 39 that meshes with the gears 36 and 38 is provided at the lower part of the middle 30 as shown in FIG. In addition, the middle 30 has gears 40, 41, 42, 43, 44 that sequentially mesh with each other.
are each supported via bearings 45, and the gear 4
0 and 44 are racks 46 provided on the base 29.
and a rack 47 provided on the top plate 31, respectively. Guide rollers 48 and 49 for guiding the middle 30 are provided on both sides of the base 29, and the guide rollers 48 are supported by horizontal shafts 50, and the middle 30 is
The guide rollers 49 are supported by vertical shafts 52 and guide grooves 53 formed on both sides of the lower part of the middle 30 are in contact with the guide groove side surfaces 51 formed on both sides of the lower part to restrict vertical movement of the middle 30. The horizontal movement of the middle 30 is restricted by coming into contact with the middle 30.

Similarly, guide rollers 54 and 55 for guiding the top plate 31 are provided on both sides of the top plate 31, and guide rollers 54 and 55 are respectively provided on both sides of the top plate 31.
are supported by horizontal shafts 56..., and regulate the vertical movement of the top plate 31 which abuts against the guide groove side surfaces 58 formed on both sides of the upper part of the middle 30, and the guide rollers 55... are supported by vertical shafts 57... , comes into contact with guide surfaces 59 formed on both sides of the upper part of the middle 30 to restrict the movement of the top plate 31 in the horizontal direction.

Locking pins 18 are mounted via brackets 60 at three locations on the upper surface of the top plate 31 along the transport direction.

5 and 6, when driven and rotated by the motor 27, gears 36 and 38 pivotally supported by the base 29 rotate, and the middle 30 is horizontally moved by a rack 39 provided at the lower part of the middle 30.

Gears 40 and 4 pivotally supported by the middle 30
4 is rotated by a rack 46 provided on the base 29, and the middle 30 and top plate 31 are horizontally moved relative to each other by a rack 47 provided on the top plate 31.

Therefore, the top plate 30 relative to the base 29
The moving distance is twice the moving distance of the middle 30.

FIG. 7 shows a stopper release device 61 provided at the station S. Guide rollers 62 arranged in the same manner as the roller conveyor 11 on the transport vehicle 1 are provided on the station S at the same height as the guide rollers 21 of the roller conveyor 11 during transfer.

Then, the cylinder 64 mounted on the fixed table 10 on the side of the transport vehicle 1 via the bracket 63 is extended, and the rod 65 provided on the station S is extended.
When the rod 67 with a locking portion 67a formed at its end is pulled down via the arm 66, the pallet 16 or 17 on the station S becomes free.

The above-mentioned stopper release operation is performed only when the pallet 16 or 17 is transferred between the transport vehicle 1 and the station S.
In order to make the pallet a protrude and prevent the pallet 16 or 17 from falling off the station S,
A spring 68 biases the rod 67 in the upward direction.

As described above, the article carrier with a transfer device of the present invention has a station, etc. mounted on a self-propelled trolley that carries a battery and travels along a guide wire buried in a running course while detecting the induced magnetic field of the guide wire. This system is equipped with a transfer device for transferring article pallets and tool pallets between the above-mentioned carts. Conventionally, an automatic pallet chute was installed between a station, etc. and the transport cart to exchange each conveyed item. However, by installing a transfer device with the above functions on the transport vehicle, the automatic pallet changer is no longer necessary, and the space in the workshop can be used effectively. In addition, since a large number of automatic pallet changers are equivalent to the number of transfer devices for several transport vehicles, the economic burden is reduced.
It has extremely high practical value.

In addition, the transport vehicle with the transfer device of this embodiment has rollers on the fixed table for transporting the article pallets.
A conveyor is provided, and a transfer device and a frame for loading tool pallets are provided on the movable table to simplify the drive system.

Then, the product pallet loaded on the roller conveyor installed on the fixed table and the tool pallet loaded on the frame are conveyed simultaneously, or the tool goes right next to the work equipment to load and unload the tool pallet. be able to.

Furthermore, by arranging guide rollers in eight rows, the roller conveyor can load and transport two types of pallets, large and small.

That is, large pallets have guide rollers supported on two outer rows of vertical and horizontal shafts, and small pallets have guide rollers supported on two inner rows of vertical and horizontal shafts.

Further, since the transfer device of this embodiment can obtain a large transfer distance by using the planetary gear system, there is an advantage that the transfer device can be placed without protruding from the width of the carrier vehicle when the transfer device is stored.

Furthermore, by sequentially fitting and removing the locking pins placed on the top plate of the transfer device at three locations along the transfer direction into the locking holes of the pallet, the pallet for goods can be transferred over a long distance from the transport vehicle. It becomes possible to do so.

As is clear from the above description, according to the present invention, when a pallet of articles is transferred between an article carrier and a station, the weight of the pallet is transferred between the guide rollers on the station and the rollers on the article carrier. The lifting of the transfer device along with the conveyor is for the purpose of fitting the locking pin into the locking hole of the pallet, and the weight of the pallet and hence the moment force are not applied to the transfer device. Therefore, the transfer operation becomes stable, and at the same time, failures of the transfer device are eliminated.

[Brief explanation of drawings]

FIG. 1 is an overall side view of an article carrier with a transfer device according to the present invention, FIG. 2 is a front view, and FIG. 3 is a plan view.
FIG. 4 is a partially cutaway sectional view of the transfer device, FIG. 5 is a partially cutaway side view, and FIG. 6 is a cross-sectional view of FIG. 5.
FIG. 7 shows an installation diagram of the stopper release device. DESCRIPTION OF SYMBOLS 1... Transport vehicle, 11, 12... Pallet for articles, 16... Pallet for tools, 19... Transfer device, 13... Roller conveyor, 14... Frame for conveyor, 18... Locking pin, 22 ... Locking hole, 29 ... Base, 30 ... Middle, 31 ...
Top plate, 62... Guide roller, S...
station.

Claims (1)

[Scope of Claims] 1. On the side of the article conveyance cart, which carries a battery and travels along a guide wire buried in the travel course while detecting the induced magnetic field of the guide wire, the article conveyor is spaced at a predetermined interval. A roller conveyor is mounted on a pair of conveyor frames fixed on a trolley, and between the pair of frames, a top plate is provided with a base and a locking pin that fits in and out of the locking hole of the article pallet; A transfer device consisting of a middle interposed between the top plate and the base and capable of extending the top plate in the direction of the station is provided so as to be movable up and down with respect to the roller conveyor; An article conveying cart with a transfer device characterized by having a guide roller provided at the same height as the conveyor.