JPH0417601Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application]
This invention relates to a bridge device in which traveling rails are laid apart and a bridge rail is arranged between them so that a conveyance truck can travel inside and outside of a warehouse to convey articles.

[Conventional technology]

Conventionally, when a self-propelled transport vehicle moves in and out of a storage warehouse equipped with an opening/closing door to carry goods in and out, as shown in Fig. 4, a running rail A inside the storage warehouse is used.
and the running rail B on the outside of the refrigerator are laid apart, and between them, the connecting rail C is arranged inside the running rails A and B so that the ends of each rail overlap (overlap). A bridge device is known in which a transport vehicle having wheels rolling on the upper surface of each rail runs. In addition, traveling rail A,
It is also known that the cross sections of B and the connecting rail C are U-shaped, and the opening sides thereof are opposed to each other, so that the guide roller F can pass through the inside thereof to prevent the wheels from coming off.

After loading or unloading articles from the warehouse, when closing the inside and outside of the warehouse with the opening/closing door, slide the connecting rail C toward the running rail A as shown in D, or rotate it as shown in E to close the running rail A. and B are separated.

[The problem that the idea attempts to solve]

In the conventional bridge equipment described above, the connecting rail C
are arranged inside the running rail A inside and outside the refrigerator and the running rail B outside the refrigerator, with the ends of each rail overlapping each other, so there is a gap at the joint between the running rail and the connecting rail. , steps and misalignments are likely to occur. For this reason, when the transport vehicle runs along the joints of the rails, it is subject to vibrations and shocks.
There is a problem that smooth running is not possible. In addition, since the guide roll for preventing derailment rolls along the groove formed in the running rail and the connecting rail, there is another problem in that it tends to sway at the joint between the rails. Furthermore, the cross-sectional shape of the rail is limited to a U-shape, which imposes restrictions on miniaturization and processing costs, and because the guide rolls fit into the grooves of the rails, it is necessary to remove the guide rolls when making adjustments, inspections, etc. There was also a drawback that it took a lot of time to put on and take off.

The present invention solves the problems of conventional bridge construction equipment, compensates for gaps, steps, and shifts formed at the joint between the traveling rail and the connecting rail, and
The object of the present invention is to provide a bridge device that allows a transport vehicle to travel smoothly.

[Means to solve the problem]

As a specific means for achieving the above object, the present invention provides running rails laid apart, bridge rails arranged so that the same track is formed between the running rails, and the running rails and the above-mentioned running rails. The vehicle was equipped with wheels capable of rolling on the upper surfaces of each of the bridge rails, and a conveyance truck having guide rolls for preventing derailment capable of rolling on respective sides of the travel rail and the bridge rail. and,
The bridge rail disposed between the spaced apart running rails has both ends bent into a hook shape to form a bent portion adjacent to an end of the running rail, and the bridge rail is arranged between the running rails and the bridge rail. The end of the upper surface was formed into a sloped portion so that the wheels of the transport vehicle smoothly rolled on the upper surfaces of the traveling rail and the bridge rail.

Further, the end portions of the side surfaces of the traveling rail and the bridge rail were also configured as inclined portions so that the guide rolls for preventing derailment of the carrier vehicle smoothly rolled on the side surfaces of the traveling rail and the bridge rail.

[Effect]

By the above means, the inclined portion formed at the end of the upper surface of the traveling rail and the bridge rail arranged so as to be on the same track as the traveling rail facilitates the smooth transfer of wheels between the steps between the traveling rail and the bridge rail. Make it. Further, the guide rolls for preventing derailment of the transport vehicle smoothly roll along the inclined portions formed at the end portions of the side surfaces of the traveling rail and the bridge rail.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 and FIG. 2 are perspective views showing a specific example of the bridge construction device according to the present invention. In Figure 1,
1, the upper surface of which is attached to the wheels 1 of the conveyor cart 9 (Fig. 2).
0 on the rolling rail outside the storage compartment, 2
is the running rail inside the warehouse. Reference numeral 3 denotes a wall that partitions the inside and outside of the refrigerator, and includes an opening 3a for loading and unloading the transport vehicle 9, and an opening/closing door 3b for closing the opening 3a. The running rails 1 and 2 on the outside and inside of the refrigerator are laid at the opening 3a at a predetermined interval in the traveling direction of the carrier 9. Reference numerals 8 and 8 indicate rail support members that fix the traveling rails 1 and 2 to the floor.

Reference numeral 4 denotes a bridge rail disposed between the separated traveling rails 1 and 2 so as to be on the same track as the traveling rails 1 and 2. Both ends of the bridge rail 4 are bent inward in a hook shape, and the running rails 1 and 2
The bent portion 5, adjacent to the ends 1d, 2d of
5'. Note that this bent portion 5, 5'
may be formed symmetrically on both outer sides of the traveling rails 1 and 2 depending on the arrangement position of the guide rolls (hereinafter referred to as guide rolls) 11 for preventing derailment, which will be described later.

As clearly shown in FIG. 2, the transport vehicle 9 includes:
Four wide wheels 10 capable of rolling on the traveling rails 1, 2 and the bridge rail 4 having bent portions 5, 5', and a guide roll 11 having a pair of rolls for preventing the wheels from coming off are 4. The bent portions 5, 5' of the bridge rail 4 of the traveling rails 1, 2 are in sliding contact with the non-adjacent sides, that is, in this example, both outer surfaces of the traveling rails 1, 2. . The four sets of guide rolls 11 are rotatably attached to L-shaped fittings 11a, which are rotatably fitted onto a support shaft 9a hanging from the transport vehicle 9, at equal intervals to the support shaft 9a. .

Returning to FIG. 1, one end of the bent portions 5, 5' of the bridge rail 4 is fixed to a rotation shaft 6. As shown in FIG.
This rotating shaft 6 is supported by bearings 6a at both ends, and has a motor 7a, a universal joint 7b, and a reducer 7c at one end.
A rotation mechanism 7 is provided via a joint 6b. When the opening/closing door 3b is opened, the rotation mechanism 7 rotates the bridge rail 4 having the bent portions 5, 5'.
Rotate the bridge position (shown by solid line) to the inverted position (dotted line position) in the direction of arrow E. Reference numeral 7d designates an inverted position detector for the bridge rail 4, which is switched on at the inverted position by a detection body 6c fixed to the rotating shaft 6. Reference numeral 7e denotes a bridge position detector attached to one of the rail support members 8, 8, which is turned on when the bent portion 5 of the bridge rail 4 is parallel to and adjacent to the end portion 2b of the traveling rail 2. Both of the position detectors 7d and 7e stop the forward and reverse rotational movement of the motor 7a, thereby ending the rotational movement of the bridge rail 4.

The opening/closing door 3b is normally closed when the bridge rail 4 is in an inverted position, providing a security function, and is opened only when loading or unloading. ) can be run.

Now, at the ends of the upper surfaces of the running rails 1 and 2, inclined parts 1a and 2a are formed. Also,
Similarly, an inclined portion 5a is formed on the upper surface of the tip end of the bent portions 5, 5' of the bridge rail 4. These sloped portions 1a and 2 are formed on the upper surfaces of the running rails 1 and 2 and the bridge rail 4, that is, at the ends of the running surface of the transport vehicle 9 (FIG. 2).
a and 5a smooth the transfer of the wheel 10 between the steps between the travel rails 1 and 2 and the bridge rail 4, and may be curved surfaces. Note that the bridge rail 4 adjacent to the ends 1d and 2d of the running rails 1 and 2
The lengths of the bent portions 5, 5' are set such that at least the flat running surfaces of the traveling rails 1, 2 and the flat running surfaces of the bent portions 5, 5' overlap to some extent.

On the other hand, as shown in the figure, the side surfaces of the traveling rails 1 and 2 are formed into flat surfaces (or convex surfaces may be used), on which the guide rolls 11 slide, and sloped portions 1b and 2b are formed at the tips thereof. ing. Also,
Similarly, sloped portions 4a and 4b are formed at both ends of the side surface of the bridge rail 4. The guide rolls 11 of the transport vehicle 9 (FIG. 2)
b, 2b and 4a. In this case, the traveling rails 1 and 2 and the guide roll 11 are removable, so that the guide roll 11 can be adjusted and
This makes inspection and other work easier. Guide roll 1
A pair of rolls 11', 11' or 1 constituting 1
The distance between the centers of 1" and 11" (see Figure 2) is the slope 1 formed at the end of the side surface of the running rails 1 and 2.
It is desirable that the distance between b or 2b and the sloped portion 4a formed at the end of the side surface of the bridge rail 4 be greater than or equal to l.

FIG. 2 shows an example in which U-shaped cross sections are used as the traveling rails 1, 2 and the bridge rail 4. In the figure, the same reference numerals as in FIG. 1 indicate common members and share common functions. It fulfills the following. The parallel traveling rails 1 and 2 and the bridge rail 4 are laid so that a groove with a U-shaped cross section (a concave surface is also acceptable) is located on the outer surface of the rails, and the guide roll 11 slides into this groove, so that it is difficult to escape. As well as preventing rings,
In this case, the running rails 1 and 2 and the guide roll 11
It is not removable and can have a crime prevention effect.

The operation of the bridging device configured as described above will be explained next. FIG. 3A is a side view for explaining the relationship between the wheels and the rails when the transport vehicle 9 travels through the joint portion 1c having a step between the running rails 1 or 2 and the bridge rail 4. Assuming that the transport vehicle 9 travels to the right in the figure, the wheels 10 rise from the traveling rail 1 to the inclined portion 5a of the bent portion 5 of the bridge rail 4 and move toward the bridge rail 4.
Transfer to. The wheels 10 that have proceeded from the bridge rail 4 to its bent portion 5' further ascend the inclined portion 2a of the running rail 2 and transfer to the running rail 2. If the order of the steps is reversed, the rider transfers to each rail in the same way via the inclined portion 1a of the traveling rail 1 and the inclined portion 5a of the bent portion 5' of the bridge rail 4. In this way, even if there is a step between each rail, the wheels 10
can move up and down the slopes of each rail, suppressing shocks and vibrations as much as possible, and running smoothly.

FIG. 3B is a plan view for explaining the relationship between the guide rolls and the rails when the transport vehicle 9 travels through the joint portion 1c having a misalignment between the traveling rails 1 or 2 and the bridge rail 4. . Assuming that the transport vehicle 9 travels to the right in the figure in the same manner as described above, the pair of rolls 11', 11'(11'',11'') constituting the guide roll 11 is such that the rear roll is on the traveling rail. 1, the roll on the front side becomes free, touches the slope 4a at the end of the side surface of the bridge rail 4, and advances to the side surface of the bridge rail 4. Subsequently, the roll on the rear side passes from the inclined part 1b at the end of the side surface of the running rail 1 to the inclined part 4a at the end of the side surface of the bridge rail 4 to the bridge rail 4.
Go to the side. Similarly, when moving from the side of the bridge rail 4 toward the running rail 2, the rolls on the front side and the rear side move from the slope 4a of the side edge of the bridge rail 4 to the slope of the side edge of the running rail 2. Part 2a
to move through.

In this way, the guide roll 11 can move smoothly while suppressing the impact in the lateral vibration direction of the transport vehicle 9 at the joint portion 1c of each rail. At this time, when the guide rolls 11', 11' on one side try to come off to the outside of the rail, they are restrained by the guide rolls 11'', 11'' on the other side, and are prevented from coming off.

[Effect of idea]

As explained above, according to the bridge device according to the present invention, even if there is a gap or a step between the traveling rail and the bridge rail, the wheels of the transport vehicle can be placed on the same track as the traveling rail and the traveling rail. It is possible to smoothly transfer the bridge rail via the slope formed at the end of the upper surface of the bridge rail arranged so as to ensure reliable running. In addition, even if there is a misalignment between the running rail and the bridge rail, the guide rolls of the transport vehicle will roll smoothly along the slopes formed at the side edges of the running rail and the bridge rail, allowing the transport It is possible to reduce lateral vibration, vibration, and shock of the truck.

Furthermore, as shown in Figure 1, when the outer surface of each rail on which the guide rolls slide is made flat, each rail and guide roll can be attached and detached, making it easier to adjust and inspect the guide rolls. It becomes easy. Further, when the outer surface of each rail is formed into a U-shaped cross section as shown in FIG. 2, the traveling rail and the guide roll cannot be attached to each other, and a crime prevention effect can be provided.

The bridge device according to the present invention is highly effective when used, for example, in safety deposit box equipment that requires a security function, fire doors, and loading/unloading devices between partitions with shutters in clean rooms.

[Brief explanation of the drawing]

1 and 2 are perspective views showing different embodiments of the bridge construction device according to the present invention. FIG. 3A is a side view showing the relationship between the wheels and the rails, and FIG. 3B is a plan view showing the relationship between the guide rolls and the rails. FIG. 4 is a perspective view of a conventional bridge construction device. 1, 2... Traveling rail, 1a, 1b, 2a, 2
b...Slanted part, 1c...Joint part, 3...Partition wall, 3a...Opening, 3b...Opening/closing door, 4...Bridge rail, 4a...Slanted part, 5, 5'...Bending part ,
5a... Inclined portion, 6... Rotating shaft, 7... Rotating mechanism, 9... Transport truck, 10... Wheels, 11... Guide roll for preventing wheel slippage, 11', 11''... Roll.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Traveling rails laid apart in the traveling direction of the transport vehicle, bridge rails arranged so that the same track is formed between the separated traveling rails, and the traveling rails. and a transport vehicle having wheels that can roll on the upper surfaces of each of the bridge rails and guide rolls for preventing derailment that can roll on the side surfaces of the traveling rails and the bridge rails, the separated traveling rails. The bridge rail arranged between has both ends bent into a hook shape, and a bent part is formed adjacent to the end of the traveling rail,
The bridge device is characterized in that the ends of the upper surfaces of the traveling rail and the bridge rail are sloped portions so that the wheels of the conveyance vehicle smoothly roll on the upper surfaces of the traveling rail and the bridge rail. (2) The end portions of the side surfaces of the traveling rail and the bridge rail are made into sloped portions so that the guide rolls for preventing derailment of the transport vehicle smoothly roll on the side surfaces of the traveling rail and the bridge rail. A bridging device according to claim (1) of the utility model registration claim.