JP2503130Y2 - Self-propelled / hand-operated switching device for transport vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention allows a drive rotating body that comes into contact with a rail to run a transport vehicle to move toward and away from the rail so that the transport vehicle can be driven by itself and can be pushed by hand. The present invention relates to a self-propelled / manually-pushed traveling switching device.

2. Description of the Related Art Conventionally, there is a motor as a self-propelled driving source, and a driving rotating body (for example, a roller) that is connected to the motor and is rotated by, for example, a worm speed reducer is pressed against a rail to be self-propelled. There is a carrier.

Such a transport vehicle, for example, needs to be manually driven when a failure occurs, but cannot be manually driven because the drive rotor is restricted in rotation by the worm speed reducer. A clutch mechanism is provided between the worm speed reducer and the drive rotator to allow the drive rotator to rotate freely without being constrained by the worm speed reducer, thereby enabling manual travel.

However, when the clutch mechanism is provided as described above, there are problems that the structure becomes complicated and the weight of the transport vehicle itself increases.

Means for Solving the Problems The present invention is to attach a drive rotating body that drives a transport vehicle in contact with a rail to a tilting member pivotally supported on the transporting vehicle, and to attach the upper end of an elevating rod whose lower end is connected to the tilting member. The lever link is rotatably supported on the transport vehicle and is connected to one end of the lever link. The other end of the lever link is connected to one end of an operation lever link which is rotatably supported on the transport vehicle. The other end of an operating lever rotatably supported on the carrier is connected via a toggle link, and the drive rotor is brought into contact with and separated from the rail by the operation of the operating lever. The self-propelled / hand-operated traveling switching device solves the above-mentioned problems.

When the operating lever is operated and the tilting member is tilted to press the drive rotating body against the rail, the transport vehicle is allowed to travel by itself due to the rotation of the drive rotating body.

On the other hand, when the operation lever is actuated in the opposite direction to release the drive rotor from the rail, the transport vehicle is in a state where it can be manually pushed.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

The transport vehicle 10 is mounted on a pair of rails 12 and 13 provided on both sides of legs 11 and 11 which are erected at appropriate intervals on an underfloor running path R, and is placed on a pair of rails.
One running roller (one not shown) 14 and one rail
A pair of guide rollers 15 and 15 sandwiching 13 from both sides
And the four backup rollers 16 that prevent the transport vehicle 10 from rising up. The one rail 13 has a rack 18 having teeth 17 facing downward along the longitudinal direction of the rail 13 at the inner lower part.

A support frame 21 having a tilting member 20 at the lower end is provided on the side surface of the transport vehicle 10. The tilting member 20 is tiltably provided on a horizontal shaft 22 provided on the support frame 21. The tilting member 20 includes a motor 23 and a worm reducer 25 connected to the motor 23 via a joint 24. The speed reducer 25 has a pinion (driving rotor) that meshes with the rack 18.
26 are provided. The tilting member 20 further includes a pinion.
A U-shaped connecting frame 30 is horizontally provided so as to surround 26. The connecting frame 30 is connected to the lower end of the elevating rod 33 among the toggle link 31, the lever link 32, and the elevating rod 33 provided along the side surface of the transport vehicle 10. Lever link 32
The operating lever 34 is rotatably provided on the transport vehicle 10 by pins 35 and 36, respectively. Both ends of the toggle link 31 are
The operation lever 34 and the lever link 32 are rotatably connected by pins 37 and 38. Lever link 32, lifting rod
The pin 33 is rotatably connected by a pin 39. Among the above components, the operation lever 34, the toggle link 31, the lever link 32, and the elevating rod 33 constitute a contact / separation mechanism 40 of the connecting frame 30. Further, the contact / separation mechanism 40 and the tilting member 20 constitute a self-propelled / manual-traveling switching device 50 of the transport vehicle 10.

The constituent members other than the operation lever 34 and a part of the support frame 21 are provided below the floor G.

Further, the elevating rod 33 is composed of a shaft rod 41 and brackets 42 and 43 which are screw-engaged with both ends of the shaft rod 41, and the screw engagements are in a reverse screw relationship with each other. Therefore, when the shaft rod 41 is rotated so as to be twisted, the distance between the brackets 42 and 43, that is, the length of the entire lifting and lowering rod is changed, and the pinion is changed.
The meshing state of the rack 26 and the rack 18 can be adjusted.

 Next, the operation will be described.

First, a case where the transport vehicle 10 is driven by itself will be described.

When the operating lever 34 is rotated from the position indicated by the imaginary line in FIG. 1 to the position indicated by the solid line, the toggle link 31 causes the lever link 32 to rotate in the counterclockwise direction and pulls the elevating rod 33 upward.
By the upward movement of the elevating rod 33, the tilting member 20 tilts clockwise around the horizontal shaft 22, and the pinion 26 meshes with the rack 18. On the other hand, the rotation of the motor 23 is controlled by the speed reducer 25.
It is decelerated and rotated by and is transmitted to the pinion 26.
Therefore, the transport vehicle 10 travels by itself on the rails 12 and 13 by the rotation of the pinion 26.

Next, a case where the carrier vehicle 10 is manually driven will be described.

When the operating lever 34 is rotated from the position indicated by the phantom line in FIG. 1 to the position indicated by the solid line, the toggle link 31 becomes a lever link.
Rotate 32 in the clockwise direction to push down the lifting rod 33. By the downward movement of the elevating rod 33, the tilting member 20,
Tilt counterclockwise about horizontal axis 22 and move to pinion 26
Away from rack 18. Therefore, the carrier 10 has the pinion 2
6. It is no longer constrained by the speed reducer 25 and the like, and can travel on the rails 12 and 13 by hand.

Since the solid line position of the contact / separation mechanism 40 is the reference position, a mechanism for locking at that position is usually required.
Since such a locking mechanism is well known, its description is omitted.

In addition, the above-mentioned carrier is designed to travel by meshing the pinion and rack, but instead of the rack and pinion mechanism, a rotating body such as a roller with a large friction coefficient is pressed against the flat part of the rail. You may make it drive a conveyance vehicle.

EFFECTS OF THE INVENTION The self-propelled / hand-operated traveling switching device for a guided vehicle according to the present invention can bring a drive rotating body connected to a drive source into and out of contact with a rail. By moving the drive rotating body away from the rail, the vehicle can be driven by pushing by hand.

Further, it is no longer necessary to provide a clutch mechanism which is conventionally required for a carrier vehicle or the like using a worm speed reducer, the structure of the carrier vehicle can be simplified, and the weight of the carrier vehicle itself can be reduced.

Further, since the drive rotating body is separated from the rail during the manual travel of the transport vehicle, it is possible to reduce wear of the drive rotating body.

Also, for example, when using a carrier in a clean room where dust is disliked or when lowering the height of the carrier from the floor to facilitate transfer, install a rail under the floor and drive it. Even if the rotator is located under the floor, the drive rotator can be moved toward and away from the rail by the operation lever provided above the floor on the transport vehicle. The effect is that the traveling can be easily switched.

[Brief description of drawings]

FIG. 1 is a front view of a carrier equipped with a self-propelled / hand-operated switching device according to the present invention, FIG. 2 is a right side view of FIG. 1, and FIG. 3 shows a partially omitted pinion-rack engagement state. Front view,
FIG. 4 is a plan view of FIG. 3, and FIG. 5 is a sectional view taken along the line 5-5 in FIG. 10 ... Transport vehicle, 12 ... Rail 20 ... Tilt member, 26 ... Pinion (driving rotor) 31 ... Toggle link, 32 ... Lever link 33 ... Elevating rod, 34 ... Operating lever 40 ... Contact / separation mechanism, 50 ... Self-propelled Manual travel switching device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideaki Haruna Inventor Hideaki Haruna 4-17-88, Tsurumi, Tsurumi-ku, Osaka-shi, Tsubakimoto Chain Co., Ltd. (56) References: Mitsuihei 2-3969 (JP, U)

Claims (1)

(57) [Scope of utility model registration request] 1. A drive rotator that drives a transport vehicle in contact with a rail is attached to a tilting member pivotally supported on the transport vehicle, and an upper end of an elevating rod whose lower end is connected to the tilting member is rotated on the transport vehicle. The lever link is freely connected to one end, and the other end of the lever link is connected to one end of an operation lever rotatably supported on the carrier via a toggle link. A self-propelled / hand-operated traveling switching device for a transport vehicle, wherein the drive rotating body is brought into contact with and separated from the rail.