JP3082496B2 - Overhead traveling car - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead traveling vehicle installed in a factory or a warehouse. In particular, the present invention relates to an overhead traveling vehicle that can prevent a conveyed article from falling off during traveling of the overhead traveling vehicle.

[0002]

2. Description of the Related Art In general, an overhead traveling vehicle having an overhead traveling vehicle main body running along rails provided on a ceiling, and an elevating platform provided to be able to move up and down by a belt or the like with respect to the overhead traveling vehicle main body. It has been known.

[0003] Such overhead traveling vehicles are arranged in factories, warehouses, and the like, and grip an article by working means provided on a lifting platform, and transport the article from a predetermined station to a station. .

FIG. 7 is a front view of an overhead traveling vehicle provided with a chucking device as a working means, and FIG. 8 is a right side view thereof.

In FIG. 1, reference numeral 1 denotes an overhead traveling vehicle main body that travels along a rail R disposed on a ceiling T of a building, 2 denotes an elevator that is provided to be able to move up and down with respect to the overhead traveling vehicle main body 1,
Reference numeral 3 denotes a chucking device as a working means provided on the lift 2. B is a coil-shaped article gripped by the chucking device, around which a linear member or the like is wound.

The chucking device 3 has a pair of chucking arms 4 and 5 suspended from the front and rear of the lift 2. The chucking arms 4 and 5 are moved forward and backward (X direction in FIG. 7) of the elevator 2 by an advance / retreat mechanism (not shown) provided in the elevator 2 to grip the article B. .

[0007] Under the chucking arms 4 and 5, pin portions 6 and 6 for supporting the article B are provided to face each other. The pins 6, 6 are connected to the chucking arms 4,
5 is inserted into the center hole B1 of the article B by the gripping operation.

[0008] The overhead traveling vehicle Do not try this Yo is, lowers the elevator platform 2 have been traveling to the station or the like, by operating the chucking arm 4 and 5 of the chucking device, to grip the articles B. Thereafter, the elevating platform 2 is moved up, travels to another station or the like, and conveys the article B.

[0009]

The above-mentioned conventional overhead traveling vehicle has the following problems.

The article B was supported by the pins 6, 6 of the chucking arms 4, 5. For this reason, when the pin portions 6 and 6 break during transportation or the like, there is a problem that the article B falls from the chucking device 3.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to prevent a coil-shaped article or the like from dropping from a chucking device during traveling on an overhead traveling vehicle or the like. Is to provide cars.

[0012]

According to a first aspect of the present invention, there is provided a chucking arm for gripping an article on an elevator, and the article is brought into contact with the article by descending the elevator and further descending the article. A rotatable support arm that pivots along and enters under the article, and a fixture that regulates rotation of the support arm that has entered under the article by a gripping operation of the chucking arm , The fixing device is attached to the chucking arm, and is configured to be positioned between the rotating members of the pair of support arms to restrict the rotation of the support arm by the gripping operation of the chucking arm.

[0013]

[Effects] The present invention has the above-described structure, and thus has the following effects.

In other words, according to the first aspect of the present invention, when the elevator is lowered toward an article such as a station, the support arm provided on the elevator comes into contact with the article. The support arm is provided rotatably. The support arm is rotated along the article as the elevating platform further descends, and enters under the article.

[0015] The fixing device restricts the rotation of the support arm in a state of being inserted under the article by the gripping operation of the chucking arm. By holding the king arm, the support arm can be fixed below the article.

In this way, according to the overhead traveling vehicle of the first aspect, even if the article comes off the chucking arm during the traveling of the overhead traveling vehicle after the gripping operation of the chucking arm, the article is received by the support arm. As a result, an accident that an article falls during traveling or the like can be prevented beforehand . And solid
The fixture is attached to the chucking arm.
The gripping operation of the locking arm causes the pair of support arms to move
It is located between the rotation members so as to regulate the rotation of the support arm.
Therefore, the above-described effects can be obtained with a simple configuration.

[0017]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing an embodiment of an overhead traveling vehicle according to the present invention, FIG. 2 is a right side view thereof, and FIG.
FIG. 4 is an external perspective view of an article conveyed by the overhead traveling vehicle of this embodiment.

In these drawings, reference numeral 10 denotes an overhead traveling vehicle main body that travels along a traveling rail R provided on a ceiling T of a building, and reference numeral 11 denotes an overhead traveling vehicle main body 10 provided with a hanging belt 12 so as to be able to move up and down. It is a lift platform. There is a winding mechanism (not shown) in the overhead traveling vehicle main body 10, and the belt 12 is wound up or sent out by the winding mechanism, so that the lift 11 is moved up and down.

Reference numeral 20 denotes a chucking device as a working means.

The chucking device 20 includes chucking arms 21 and 22, and the chucking arms 21 and 22.
Movement mechanism 15 for moving back and forth movement, and cover member 2
4 and 25, and support arms 26 and 27 rotatably supported below the cover members 24 and 25.

The chucking arms 21 and 22 are suspended before and after the elevator 11 in the same manner as in the conventional example.
Have pin portions 6 and 6 for supporting the same.

Reference numeral 40 denotes a fixture attached to the lower part of the chucking arms 21 and 22, which is attached at right angles to the chucking arms 21 and 22. The fixing device 40 is provided with support arms 26, 2 as described later.
7 is restricted.

As shown in FIG. 3, the reciprocating mechanism 15 includes a cylinder 16, a link mechanism 17 operated by the cylinder 16, and moving bodies 18a, 18
b. The moving bodies 18a and 18b are attached to upper portions of the chucking arms 21 and 22, respectively.
Reference numeral 19 denotes a linear motive guide, which is a moving body 18a,
The guide 18b guides forward and backward movements in the direction of the arrow X in the figure.

The cover members 24 and 25 are provided vertically before and after the elevating table 11 with an interval capable of receiving the article B. As shown in FIG. 2, the cover members 24 and 25 are also provided at intervals in the left-right direction of the elevating platform 11 so as not to interfere with the fixtures 40 of the chucking arms 21 and 22.

Guide portions 28, 28 are attached to the lower ends of the cover members 24, 25. Guide part 28,
As shown in FIG. 3, inclined surfaces K, K for guiding the reception of the article B are formed in 28.

Each of the support arms 26 and 27 comprises a rotating member 29, 29 formed in a crank shape in a front view, and a rod member 29a extended between the rotating members 29, 29.

The rotating members 29, 29
The pivot shafts 24a and 25a formed on the center 25 are rotated in the directions of arrows A1 and A2 in FIG.

As shown in FIG. 2, the dimension L1 between the support shafts 24a and 25a is smaller than the diameter L2 of the article B.

The upper parts 29b, 29b of the rotating members 29, 29
As shown in FIG. 5, springs 30 and 30 are attached to the rotating shaft 29a.
It is urged in the direction of arrow A1 in the figure around the center 25a.

In FIG. 5, reference numerals 31 and 31 denote cover members 2
A stopper protruding from the inside of each of the rotation members 29, 29 by the springs 30, 30 is indicated by an arrow A1 in the drawing.
It serves to regulate rotation in the direction. Stoppers 31, 3
The rotation members 29, 29 whose rotation has been restricted by 1, take a substantially vertical posture as shown in FIG.

The spring 30 and the stopper 31 are similarly provided on the cover members 24, 24 side.

The rod member 29a is composed of rotating members 29, 29
Are rotatably attached to the lower portions 29c.

As shown in FIG. 3, the fixture 40 is positioned between or outside the cover members 24 and 25 in an unloaded state, and the gripping operation of the chucking arm causes a two-dot chain line in the figure. as shown in, so as to position between the upper 29 b, 29 b of the rotating member 29 to slide in the arrow X1 direction.

The fixture 40 is located on the upper part 2 of the rotating members 29, 29.
When located between 9 b, 29 b, the top 29 b, 29 b of the rotating member 29 and 29, stoppers 31, 31 and the fixture 40
And the rotation of the rotation members 29, 29 is restricted.

Next, the operation of the overhead traveling vehicle having such a configuration will be described with reference to FIGS. 6 (a) to 6 (c).

In the station or the like, when the elevator 11 descends toward the article B, as shown in FIG. 6A, the rod members 29a, 29a of the support arms 26, 27
Abuts on the article B. When the lift 11 is further lowered, as shown in FIG.
Are rotated in the A2 direction against the urging force of the springs 30, 30. Accordingly, the rod members 29a move along the outer periphery of the article B.

Thereafter, when the elevator 11 further descends,
As shown in FIG. 6C, the rotating members 29, 29 are rotated in the direction of arrow A1 in the figure by the urging force of the spring 30. As a result, the rod members 29a, 29a
After moving along the outer circumference of the object B, the object B enters the lower part of the article B.

Thereafter, when the chucking arms 21 and 22 perform a gripping operation, the above-described fixture 40 is
The rotating member 2 is located between the upper portions 29 b , 29 b of the
The rotation of 9, 29 is restricted.

By performing the operation opposite to the above operation, the gripped article B can be released from the chucking device.

As described above, according to the overhead traveling vehicle of this embodiment, the rod members 29a and 29a of the support arms 26 and 27 are fixed below the article B after the chucking arms 21 and 22 are gripped. Therefore, even if the pins 6 and 6 of the chucking arm are broken, the article B is
Since it is received and supported by a and 29a, it is possible to prevent an accident in which the article B falls during traveling on an overhead traveling vehicle or the like. Moreover, the fixing device 40 is
Attached to the king arm, chucking
The pivoting members of the support arms 26 and 27 are
Rotating member located between upper portions 29b of 29, 29b
Since the rotation of 29, 29 is regulated,
The above-described effects can be obtained with a simple configuration.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and can be appropriately modified within the scope of the present invention.

[Brief description of the drawings]

FIG. 1 is a front view of an overhead traveling vehicle according to the present invention.

FIG. 2 is a right side view of the same.

FIG. 3 is a view taken in the direction of arrows III-III in FIG. 2;

FIG. 4 is an external perspective view of an article conveyed by the overhead traveling vehicle according to the embodiment.

FIG. 5 is a view taken in the direction of arrows VV in FIG. 1;

6 (a) to 6 (c) are action explanatory diagrams.

FIG. 7 is a front view showing a conventional overhead traveling vehicle.

FIG. 8 is a right side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Overhead traveling vehicle main body 11 Elevating stand 21,22 Chucking arm 26,27 Support arm 40 Fixture B Article

Claims (1)

(57) [Claims] 1. A chucking arm for gripping an article on an elevator, and a rotatable support arm which comes into contact with the article by descending the elevator, and rotates along the article by further descending to enter under the article. When, by the gripping operation of the chucking arm, provided a fastener for restricting the rotation of the support arm in the state that has entered the bottom of the article, said fixture chucking
Is attached to the arm and holds the chucking arm.
By the holding operation, it is positioned between the rotating members of the pair of support arms.
An overhead traveling vehicle characterized by restricting the rotation of a support arm by using the same .