JP2935159B2 - Roller conveyor for vehicle transfer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller conveyor, and more particularly to a roller conveyor for transferring vehicles used in a mechanical parking lot.

[0002]

2. Description of the Related Art As shown in FIG. 7, a mechanical parking lot is provided with a plurality of parking rooms 40 and a vehicle as a transfer object in a predetermined parking room.
And a traveling carriage 42 for transporting the vehicle to the floor 40, an entrance / exit opening 44 is provided on the entrance / exit floor, and an elevator 46 for moving the vehicle up and down is provided on each floor.

The parking rooms 40 are provided in parallel in a vertical direction (the left-right direction in FIG. 7), and a traveling path 48 of a traveling vehicle 42 is provided between the rows of the parking rooms 40. . Traveling trolley
Numeral 42 moves in the vertical direction.

As shown in FIG. 8, each of the parking rooms 40, the traveling vehicle 42, the entrance / exit 44, and the elevator 46 are provided with a roller conveyor 10 for transferring vehicles. The roller conveyor 10 is provided separately with a relatively narrow roller conveyor 10a on which the front wheels of the vehicle are mounted and a relatively wide roller conveyor 10b on which the rear wheels of the vehicle are mounted. Then, these roller conveyors 10 transfer the vehicle in the lateral direction (the direction of the arrow in the figure).

[0005] The roller conveyor has a plurality of rollers rotatably mounted between a pair of side frames via a bearing. The rollers are driven to transfer a vehicle.

Each roller has a sprocket integrally connected to one of the rollers. A chain (not shown) is wound around the sprocket of each roller, and the chain is driven by a motor (not shown) or the like. The roller is driven by circulating the chain connected to the means. As the roller member, a hollow pipe-shaped member is used in order to reduce the weight of the roller conveyor.

In the roller conveyor thus constructed, an end plate having a solid shaft is attached to the end of a hollow roller member, and the end plate is attached to a side frame via a bearing. In another example, an end plate having a shaft hole is attached to an end of a hollow roller member, and the end plate is attached to a support shaft provided on a side frame via a bearing. And the sprocket,
It was fixedly connected to the roller member or the end plate by welding.

[0008]

However, the above-mentioned roller requires a large number of manufacturing steps because it is necessary to attach an end plate to the end of the hollow roller member. It took a lot of work. Further, since the sprockets are connected and fixed by welding, the shaft may be displaced, and the roller member may be distorted or cracked due to a temperature difference during welding.
Further, even if a hollow pipe-shaped roller member is used, there is a problem that the weight cannot be completely reduced because the shaft portion of the end plate attached to the end portion is not hollow.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a roller conveyor for vehicle transfer which can couple a sprocket to a roller member without generating distortion or cracking. Is what you do. Another object of the present invention is to provide a roller conveyor that can easily and surely couple a sprocket to a roller member. A further object of the present invention is to further reduce the weight of the roller member.

[0010]

In order to achieve the above object, a roller conveyor for vehicle transfer according to the present invention comprises a plurality of roller members rotatably supported on a side frame, each of which has a hollow roller body. And a hollow shaft protruding from both ends of the roller body, comprising a sprocket non-rotatably fitted to the shaft of the roller member, and a chain wound around the sprocket of each roller member. In the vehicle transfer roller conveyor that drives each roller member, the hollow shaft portion of the roller member is engaged with a serration formed in advance on the inner periphery of the sprocket by expanding the diameter of the hollow shaft portion of the roller member. The sprocket is integrally joined to the middle part of the roller member, and the end of the hollow shaft part of the roller member is attached to the bearing provided on the side frame. It is characterized in that the lifting was.

[0011]

The shaft of the roller member is forcibly expanded by inserting an opening of a sprocket in which serrations are formed in the inner periphery in the middle of the hollow shaft portion of the roller member. The teeth of the serrations formed on the sprocket enter into the outer periphery of the intermediate portion of the shaft, and the sprocket is integrally connected to the roller member. The end of the hollow shaft portion of the roller member is directly supported by a bearing provided on the side frame.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a roller conveyor according to the present invention will be described with reference to the drawings. The same reference numerals in the drawings denote the same or corresponding parts. FIG. 1 shows an embodiment of a roller conveyor 10 according to the present invention, which is used for transferring vehicles in a mechanical parking lot.

The roller conveyor 10 generally comprises a pair of side frames 12 and a plurality of rollers 14. Each roller 14 has a bearing 16 attached to its end,
Each bearing is fixed to the side frame 12 by a bearing fixing member 18, and is rotatably fixed to the side frame.

The side frame 12, as shown in FIG.
The roller member is composed of a channel member with a U-shaped cross section.
A bearing fixing member 18 for fixing the bearing 16 to which the 14 is attached,
It is attached to the vertical part 12a of the side frame.

The roller 14 is formed by joining a sprocket 22 to a roller member 20. Roller member 20
Is formed entirely of a hollow pipe-like member, and has a roller body 20a for supporting a vehicle and a shaft portion 20b for mounting a bearing. The shaft 20b has a smaller diameter than the roller body 20a, and the roller body 20a and the shaft 20
The diameter between b and the tapered shape is temporarily reduced. In this embodiment, the sprocket 22 is coupled to one shaft of the roller member 20.

A chain (not shown) is wound around the sprocket 22 of each roller 14, and the chain is connected to driving means such as a motor (not shown) to drive the roller 14. 24 is a chain guide.

As shown in FIGS. 3 and 4, the sprocket 22 mounted on the roller member 20 has an opening 26 at the center thereof into which the shaft portion 20b of the roller member is inserted.
A serration 28 is formed on the entire circumference of the opening. In this embodiment, the serration 28 employs an involute serration, but may employ a triangular tooth serration or the like.

The initial outer diameter R1 of the shaft portion 20b of the roller member
Is a serration formed in the opening 26 of the sprocket 22
It is formed in a size that can be inserted through 28. When the sprocket 22 is integrally connected to the shaft portion 20b of the roller member, the opening 26 of the sprocket 22 is inserted into the shaft portion, as shown in FIG. The tapered core material is pressed and inserted, and the diameter R2 of the shaft portion 20b of the roller member is forcibly expanded (see FIG. 6) to perform so-called bulge processing. Roller member shaft 20b
As shown in FIG. 2, the diameter of the serration 28 formed on the sprocket 22 is forcibly expanded by the tapered core material, and the tooth tip of the serration 28 is inserted into the outer periphery 20 d of the roller member. Are integrally coupled so as to be relatively unrotatable.

In the bulging process for forcibly expanding the diameter of the shaft portion 20b of the roller member 20, in addition to this embodiment in which a tapered core material is pressed and inserted from an end opening of the roller member, fluid pressure such as hydraulic pressure, Rubber or a combination thereof can be used.

As shown in FIG. 2, the shaft portion 20b of the roller member 20 only needs to be enlarged to such an extent that the tooth tip 28a of the serration enters the outer periphery 20d so that the sprocket 22 cannot rotate relative to the sprocket 22. There may be a gap between the outer periphery 20d of the roller member and the root 28b of the serration.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to the embodiments.

For example, in the embodiment, the roller conveyor in the mechanical parking lot has been described. However, the present invention is not limited to this, and the roller conveyor can be used for other purposes.

[0023]

The roller member of the roller conveyor according to the present invention is configured as described above,
The following effects can be obtained.

In order to integrally connect the sprocket to the roller member, according to the present invention, the shaft portion of the roller member is forcibly expanded so that the tooth tip of the serration formed on the sprocket is hardly inserted into the outer periphery of the intermediate portion of the shaft portion. Therefore, the sprocket can be easily and reliably connected to the roller member without generating distortion or cracking due to a temperature difference or the like due to welding as in the related art.

In the present invention, the roller member is a hollow pipe-shaped member extending to the shaft portion, and furthermore, the end of the hollow shaft portion of the roller member is directly supported by the bearing provided on the side frame. It is not necessary to attach the end plate to the end of the roller member as in the related art, so that the roller member can be made lighter and can be rotatably supported on the side frame with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a sectional view of a roller conveyor.

FIG. 2 is a front view showing a state where a sprocket is connected to a shaft of a roller member.

FIG. 3 is a front view of the sprocket.

FIG. 4 is a sectional view of FIG. 3;

FIG. 5 is a cross-sectional view showing a state where a sprocket is fitted into a shaft portion of a roller member.

FIG. 6 is a cross-sectional view showing a state in which a sprocket is connected and fixed by expanding a shaft portion of a roller member.

FIG. 7 is a schematic plan view of a mechanical parking lot.

FIG. 8 is a plan view showing an example of using a roller conveyor.

[Explanation of symbols]

 10 Roller conveyor 12 Side frame 14 Roller 16 Bearing 18 Bearing fixing member 20 Roller member 20a Roller body 20b Shaft 22 Sprocket 26 Opening 28 Serration

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-95611 (JP, A) JP-A-59-73136 (JP, A) JP-A-55-16322 (JP, U) (58) Survey Field (Int.Cl. ⁶ , DB name) E04H 6/20

Claims (1)

(57) [Claims] 1. A plurality of roller members rotatably supported by a side frame each comprising a hollow roller body and a hollow shaft protruding from both ends of the roller body . Non-rotatably fitted to the shaft
With sprockets for each roller mixture
Each roller member is driven by a chain wound around the roller.
By expanding the hollow shaft of the material, the sprocket
The roller is engaged with the serrations formed in advance on the inner circumference.
-The sprocket is integrated with the middle part of the hollow shaft of the member.
To the bearing provided on the side frame
A roller conveyor for vehicle transfer, wherein an end of a hollow shaft portion of the roller member is supported .