JPH0776489A - Overhead traveling crane - Google Patents

Abstract

PURPOSE:To provide an overhead traveling crane capable of moving articles and transport devices in any directions and on any curved loci while being smoothly moved and easily handled. CONSTITUTION:While a runway rail 20 is supported by a beam 10 or the like on a ceiling surface through suspending members 50 at a plurality of spots in the longitudinal direction, either of connection spots between the runway rail 20 and suspending members 50 and connection spots between the suspending members 50 and ceiling surface 10 are composed of a ball joint mechanism consisting of a spherical surface head, bracket, etc., to enable so-called spherical surface motion. The connection spots between a traveling means 60 for making the runway rail 20 travel and a girder rail 30 are also similarly composed of the ball joint mechanism. Thus, the suspending members 50 and girder rail 30 inclined by the ball joint mechanism can realize the smooth motion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead traveling crane, and more specifically, a trolley equipped with a hoist and the like travels along a girder rail, and this girder rail is used as a runway rail that supports both ends of the girder rail. The present invention relates to an overhead traveling crane capable of moving a transfer device to an arbitrary position such as a building of a factory by traveling along the crane.

[0002]

2. Description of the Related Art An overhead traveling crane can suspend an article at an arbitrary position on a plane and carry it to an arbitrary position. Widely used in the handling site. In a general overhead traveling crane, runway rails are installed in parallel at regular intervals, girder rails are arranged in a direction orthogonal to the runway rails, and the girder rails are suspended and fixed to a trolley traveling on the runway rails. Therefore, the girder rail moves in parallel along the runway rail. A trolley that can travel freely along the girder rail is arranged on the girder rail, and a hoist or the like is attached to the trolley.

In such a structure, each trolley moves smoothly when a force is applied along the rail that guides the trolley, but when the direction of the force deviates from the direction of the rail, the trolley moves smoothly. I can't. Therefore, movement of a hoist or the like for transporting articles is a combination of a linear movement due to the movement of the trolley traveling on the girder rail and a linear movement accompanying the parallel movement of the girder rail due to the movement of the trolley traveling on the runway rail, You will draw a linear trajectory that is bent at a right angle.

Therefore, it has been difficult to move the article or hoist in an oblique direction or draw a curved locus. In addition, as another problem, when the trolley traveling on the runway rail and the trolley traveling on the girder rail are moved from the stopped state to the traveling state,
Due to the large static friction resistance, a large force is required at the start of running. However, after the trolley or the attachment point starts to move, so-called kinetic frictional resistance is simply added, so that it does not cause much problem.

Therefore, when trying to move an article or hoist in a desired direction, a large force is required at first. Also, when trying to change the movement direction of the article or hoist, it is necessary to switch the above-mentioned stopping and running of the trolley or running in the opposite direction, so a large force is required at the first stage. .
Next, when the worker tries to stop the article or the transportation device or changes the direction, when the trolley or the attachment point is stopped from the traveling state, the structure that is moving Because the whole inertial force is added,
There is a problem that the articles and the transportation device do not stop at the intended place and go too far. Since a heavy object such as a girder rail has a large inertial force, it is difficult to stop the movement or change the movement direction.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to allow an article or a conveying device to move in an arbitrary direction and an arbitrary curved locus in the above-described overhead traveling crane, and the movement thereof is smooth, so that the handling operation is possible. To provide an easy-to-use overhead traveling crane.

[0007]

SUMMARY OF THE INVENTION An overhead traveling crane according to the present invention which solves the above-mentioned problems is arranged in a direction in which a runway rail installed on a ceiling surface and an article conveying means travel and intersect the runway rail. In an overhead traveling crane comprising a girder rail and a plurality of girder rails that are supported by traveling means that travels on the runway rail at a plurality of longitudinal positions, runway rails are provided at a plurality of longitudinal positions to suspend the hanging members. It is designed to be supported on the ceiling surface via the ball joint mechanism, and both the connection point between the runway rail and the suspension member and the connection point between the suspension member and the ceiling surface are connected by the ball joint mechanism. In addition, the connecting portion between the traveling means for traveling on the runway rail and the girder rail is also connected by the ball joint mechanism.

The basic structure of the overhead traveling crane may be the same as that of a conventional ordinary overhead traveling crane. A runway rail installed on the ceiling surface and a girder rail supported by the runway rail are combined, and An article conveying means such as a hoist or the like is attached. As materials for runway rails and girder rails,
Although it is possible to use the same shaped steel material as that used conventionally, in the present invention, it is preferable to use a relatively lightweight material such as an aluminum material or a titanium material.

The runway rail is supported by a fixed structure such as a beam or a ceiling plate laid on the ceiling surface. The runway rail can be supported not only by the member constituting the ceiling itself but also by a fixed structure such as a beam protruding from the side wall. That is, the runway rail can be stably supported, and the runway rail can be supported by any structural member as long as the material substantially constitutes the ceiling surface.

As for the layout of the runway rails, like the conventional overhead traveling crane, two linear rails are arranged in parallel at a constant interval, and two parallel linear rails are arranged in a staggered manner in the length direction. The distance between the rails fluctuates by arranging two straight rails in a V shape, arranging two parallel rails in a curved shape, or arranging a straight rail and a curving rail. Or a circular arc-shaped rail may be arranged so as to surround the end of the linear rail. Further, a plurality of runway rails may be arranged side by side, such as three or more.

The runway rail is supported by a suspension member on the ceiling surface at appropriate intervals. As long as the suspension member can support the load of the runway rail, its shape and material can be freely set. The suspension member has an upper end connected to the ceiling surface and a lower end connected to the runway rail. And
Both the connection point between the runway rail and the suspension member and the connection point between the suspension member and the ceiling surface are connected by a ball joint mechanism.

The ball joint mechanism means a joint mechanism in which two members are connected to each other in a state in which spherical movement is possible at their connecting points. That is, for example, with reference to the ceiling surface,
The hanging member extending in the vertical direction is connected to the ceiling surface in such a manner that its central axis can be tilted in any direction and that it can freely rotate around the central axis in this tilted state. There is. Similar motions are possible with the runway rails and suspension members. As a specific structure of the ball joint mechanism, a spherical projection provided on one member may be fitted into a spherical recess provided on the other member. Even if the spherical projection or spherical depression is not a perfect spherical surface, it may form a part of a spherical surface, have a curved surface close to a spherical surface, or have contact points at multiple points on the spherical surface. It may be one. As long as the above-described movement of the ball joint mechanism can be realized, the ball joint mechanism may be composed of various link mechanisms or cam mechanisms. Practically, a device or structure conventionally used for various mechanical devices called a ball joint, a ball socket joint, a spherical bearing, etc. can be used.

A traveling means such as a trolley is attached to the runway rail so as to be capable of traveling in the longitudinal direction of the runway rail. The traveling means may be adapted to smoothly travel on wheels or the like while being housed inside the runway rail or exposed to the outside. The specific structure of the traveling means may be the same as that of the conventional ordinary overhead traveling crane.

The girder rail is supported by traveling means for traveling on the runway rail. The support points for the girder rails should be at least two points such as both ends of the girder rails. Also, if there are three or more runway rails, the girder rails may be supported by the traveling means of each runway rail. is there. You can also install multiple girder rails side by side on the runway rail.

A ball joint mechanism similar to the above is also provided at the connecting portion between the running means of the runway rail and the girder rail. On the girder rail, the article transporting means such as the hoist described above travels. The article transportation means, according to the type of handling items and the procedure of handling work,
The structures and devices used in various conventional cranes can be used freely.

[0016]

In order to allow the overhead traveling crane to move the articles and the carrier in any direction and in any curved path, the intersection angle of the girder rail with respect to the runway rail can be freely changed. Just do it. The reason is that the article conveying means attached to the girder rail moves by a combination of a linear movement in the direction along the girder rail and the movement of the entire girder rail with respect to the runway rail. At this time, if the crossing angle of the girder rail with respect to the runway rail changes freely, the turning motion of this girder rail changing the crossing angle, the parallel motion of the girder rail with the crossing angle changed, and the occasional In combination with the linear movement along the girder rail at the intersecting angle, the article conveying means will move. As a result, the article conveying means can smoothly move in an arbitrary angular direction.

In order to change the intersection angle of the girder rail with respect to the runway rail, it is necessary to widen or narrow the space between the trolleys supporting the girder rail on the runway rail. Conversely, if the support interval of the girder rails can be changed, the intersection angle of the girder rails can be freely changed within the change range.

According to the present invention, by connecting the runway rail and the hanging member and the hanging member and the ceiling surface to each other by the ball joint mechanism, the above-mentioned structure is achieved. , The crossing angle of the girder rail with respect to the runway rail can be freely changed. That is, by adopting the ball joint mechanism, the suspension member can be tilted in any direction with respect to the ceiling surface and the runway rail. When the suspension member is tilted, the runway rail supported at the lower end of the suspension member moves in the horizontal direction. If the runway rails move horizontally, the spacing between the runway rails supporting the girder rails will change. As a result, it becomes possible to change the crossing angle of the girder rail as described above. In actual operation, if you move one side of the girder rail by pushing an article or a transportation means, the trolleys of the runway rails that support the girder rail try to widen the runway rails in a horizontal direction. The suspension member is tilted to move, and the horizontal movement of the runway rail changes the support interval of the girder rails, allowing the movement of the girder rails as described above.

When the runway rail is moved horizontally by inclining the hanging member, only a spherical movement is performed in the ball joint mechanism, so that a large frictional resistance is not received.
As a result, for example, compared to a structure in which the attachment point of the girder rail to the trolley is moved linearly along the length direction of the girder rail in order to change the support interval of the girder rail, etc. Even with a small force
The girder rail starts moving smoothly. Moreover, since the inclination of the suspension member by the ball joint mechanism can be freely performed in the same manner in any direction of 360 °, there is no problem that the movement is not smooth or the movement is caught depending on the moving direction. .

In particular, when the suspension member is tilted to change the intersecting angle of the girder rails, the vertical load due to the weight of each rail applied to the slanted suspension member causes the horizontal load in the direction in which the suspension member is returned vertically. Generate force. In order for the suspension member to return to the vertical position, the intersection angle of the girder rail needs to be returned to the original value. Therefore, if no force is applied to the girder rail, the girder rail will naturally return to the original intersection angle. Specifically, if you move one side of the girder rail and stop it, the other side of the girder rail will force the girder to return vertically when the slanted suspension member returns vertically when the runway rail moves horizontally. The rail moves the intersection angle back to the original direction, that is, the unmoved side of the girder rail is moved in the same direction as the previously moved side. In other words, just move one side of the girder rail and the other side will automatically follow and move,
The girder rail is returned to the original intersection angle. If the crossing angle of the girder rail is returned to the original state, the movement can be smoothly started in any direction when the girder rail is moved next time. In the above explanation, one side of the girder rail was moved and stopped as it is,
If you slowly move one side of the girder rail, the other side will quickly follow and move, catching up with the side that moved first.

Since the ball joint mechanism is much simpler in structure than a structure in which the attachment point of the girder rail to the trolley is moved along the length of the girder rail, the overall size and weight of the device can be reduced. It is also effective. Next,
If there is a ball joint mechanism at the connection point between the traveling means for traveling on the runway rail and the girder rail, even if there is a step in the height of the runway rail due to the horizontal movement of the runway rail described above, the girder rail will move vertically. By tilting, this step difference can be absorbed. If multiple runway rails move horizontally, there will be some time delay or deviation, so if there is no ball joint mechanism in this part, the runway rails will not be able to move horizontally or will be subject to great resistance. Therefore, it becomes difficult to operate the girder rail smoothly.

Further, if there is a ball joint mechanism at the connecting point between the traveling means for traveling on the runway rail and the girder rail,
It is also possible to tilt the vertical axis of the girder rail diagonally. Thus, for example, when a force is applied to horizontally move the article or the transportation means suspended on the girder rail in the direction orthogonal to the girder rail, first, the action of the ball joint mechanism connecting the runway rail and the girder rail Thus, the girder rail is tilted, so that the article and the transportation means can be smoothly moved horizontally. The force at this time also has a function of tilting the suspension member to move the runway rail horizontally. Further, since the conveying means is inclined together with the girder rail, the traveling of the conveying means with respect to the girder rail is not hindered.

When the article or the like is further moved in the horizontal direction, the horizontal component force of the vertical load such as the weight of the article applied to the girder rail increases, and the running means of the runway rail overcomes the static friction resistance to start running. That is, the article and the transportation means start horizontal movement due to the inclination of the girder rail when a slight force is applied, and then the movement means starts the movement, so that the movement of the article can be started very smoothly. Will be seen. Also in the direction intersecting with the moving direction of the girder rail, that is, the traveling direction of the conveying means of the girder rail, the inclination of the runway rail starts the movement of the article and the conveying means, and thereafter,
Since the conveying means overcomes the static friction resistance and starts traveling, the movement of the article can be started smoothly.

Next, when there is no article directly below the girder rail, when this article is hung by the transport means,
Since it is lifted diagonally upward, there is a possibility that the article will sway from side to side when it leaves the floor. However, in the present invention, the reaction force when lifting diagonally upward tilts the girder rail, and the horizontal force component of the vertical load due to the tilt of the girder rail causes the running means of the runway rail to start running and to move the girder rail. Move to a position just below the item. As a result, the article can be lifted directly above without rocking to the left or right.

When the moving articles and the conveying means are stopped, the running means of the runway rail and the girder rail try to continue to move due to inertial force, but the girder rail tilts, and the horizontal component force accompanying this tilt causes Since the movement of the runway rail and the movement of the girder rail are restricted, the girder rail returns to a position right above the article and the conveyance means and stops.

That is, in the overhead traveling crane of the present invention, when the movement of the articles and the conveying means is stopped and the traveling direction is changed, first, the tilting movement of the girder rail and the runway rail due to the tilting of the suspension member are performed. A horizontal movement occurs, and thereafter, the running means of the runway rail and the conveying means of the girder rail move. As a result, it is possible to start the motion of the article before the traveling means overcomes the static friction resistance and starts the motion, and it becomes possible to perform a very smooth operation. Since the horizontal component force due to the load always tries to move to a position directly above the article with respect to the article, the article does not shake or move to an unexpected position.

The horizontal movement of the runway rail and the tilting movement of the girder rail as described above are easier as the weight of the rail is lighter. Also, the lighter the rail weight,
There is also less inertial resistance when starting and stopping movements and turning. Therefore, in the present invention, it is preferable to use a lightweight material such as an aluminum material as the material of the rail, rather than a die steel material generally used as a conventional rail material.

[0028]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the overall structure of an overhead traveling crane. The runway rail 2 is attached to the beam 10 that constitutes the ceiling of a factory or the like via the hanging member 50.
0 is supported. The runway rail 20 has two linear runway rails 20 and 20 made of aluminum or the like and arranged in parallel. Since the aluminum mold material is lighter than the general steel mold material, the runway rail 20 can be smoothly moved horizontally, and the resistance when moving the article is reduced. A girder rail 30 is arranged below the runway rails 20 and 20 so as to intersect the runway rails 20 and 20 at right angles. The girder rail 30 is also made of an aluminum material similar to that of the runway rail 20, and facilitates movement. The girder rail 30 is suspended from the trolley 60 traveling on the runway rail 20. A trolley 70 also travels on the girder rail 30, and a hoist 40 is attached below the trolley 70.

FIG. 2 shows the support structure of the runway rail 20, and FIG. 4 shows its disassembled structure. A saddle 510 having a U-shaped cross section is arranged on the lower surface of the beam 10 made of I-shaped steel. A ball joint shaft 520 is attached below the center of the saddle 510. Concave and convex tooth portions 512 are formed on the left and right upper edges of the saddle 510. Clamps 514 having a long U-shaped cross section on one side are disposed on the left and right sides of the saddle 510 with the beam 10 interposed between the clamps 514. One side of the clamp 514 is the saddle 51
It is meshed with the tooth portion 512 of No. 0, and a washer 517 is sandwiched on the lower surface of the saddle 510, and is fixed by tightening with a bolt 516. Therefore, the clamp 51 for the saddle 510
By adjusting the mounting position of No. 4, the mounting position of the saddle 510 with respect to the beam 10 can be adjusted left and right. Further, even if the size and shape of the beam 10 are changed, the saddle 510 and the clamp 514 can be securely attached.

At the center of the saddle 510, a ball joint bracket 530 is arranged. This bracket 530
Has its center penetrated and its peripheral edge is spherically recessed.
The ball joint shaft 520 is inserted through the center of the bracket 530, and the spherical head 52 provided at the upper end of the ball joint shaft 520.
2 slidably contacts the bracket 530. The bracket 530 and the spherical head 522 are formed of wear resistant resin, hardened steel, or the like. Further, it is possible to use a resin material having a small coefficient of friction on the surface, to reduce the coefficient of friction, or to carry out a surface finishing process for enhancing abrasion resistance.

At the lower end of the ball joint shaft 520, a screw shaft 524 is attached.
Are connected by screwing and are fixed by tightening with a tightening nut 526. Screw shaft 524 for ball joint shaft 520
By adjusting the screwing depth of, the total length of the hanging member 50, that is, the support height of the runway rail 20 can be adjusted. A ball joint shaft 520 similar to the above is screwed in the opposite direction to the lower end of the screw shaft 524, and is fixed by a tightening nut 526.

The downward ball joint shaft 520 has the spherical head 522 at the lower end attached to the upper end of the rail member 200 forming the runway rail 20. The rail member 200 is formed in a fixed length, and is used by connecting it to a required length with a joint plate 212 or the like. An end member 210 is attached to the end of the rail material 200. A pair of left and right frame-shaped clamp holders 532 and 532 are attached to the upper ends of the rail members 200, and a bracket 53 similar to the above is provided in the center of the clamp holders 532 and 532.
0 is stored. The ball joint shaft 520 is inserted through the bracket 530, and the spherical head 522 is in contact with the bracket 530.

In the mounting structure of the runway rail 20 as described above, the spherical head 52 is provided at the upper and lower ends of the suspension member 50.
2 and the bracket 530 constitute a ball joint mechanism in which spherical movement is possible, so that the beam 10 and the saddle 51 are connected.
With respect to 0, the ball joint shaft 520 can freely tilt or rotate in a tilted state. Runway rail 2
0 and the clamp holder 532, the ball joint shaft 520 can freely tilt or rotate in a tilted state.

Next, the mounting structure of the garter rail 30 to the runway rail 20 will be described. Figure 3
Represents a cross section in a direction orthogonal to FIG. 2, and FIG. 5 represents an exploded structure. The trolley 60 traveling on the runway rail 20 includes a pair of wheels 60 in front of and behind the main body 610.
It is equipped with 0 and 600, and can freely run in the internal space of the runway rail 20. An I-shaped bolt 620 is arranged at a portion protruding from the lower end of the main body 610,
The pin 612 is pivotally attached to the main body 610. The same clamp holders 632 and 632 are attached to the upper end of the garter rail 30, and the same bracket 630 is accommodated in the center of the clamp holders 632 and 632. The I-shaped bolt 620 is inserted through the center of the bracket 630, and the spherical head nut 622 is attached to the tip of the I-shaped bolt 620.

The spherical head nut 622 and the bracket 630 form a ball joint mechanism similar to the above. Therefore, with respect to the trolley 60 and the I-shaped bolt 620, the bracket 630, that is, the garter rail 30 side can be tilted in any direction, and can be freely rotated even when tilted. Garter rail 3
The wheel 700 of the trolley 70 is accommodated in the vehicle 0, and the hoist 40 is attached below the trolley 70 as described above.

6 and 7 schematically show an operating mechanism in the overhead traveling crane having the above structure. As shown in FIG. 6, a beam 10 that is a fixed structure for the ceiling surface.
On the other hand, the runway rails 20, 20 are supported at a plurality of places via the hanging members 50, 50. The hanging member 50 can freely tilt forward, backward, leftward and rightward by the ball joint mechanism including the bracket 530 and the spherical head 522. If the left and right suspension members 50 are tilted in the same direction by the same amount, the runway rails 20 and 20 will move horizontally while maintaining the same spacing.
Tilt in opposite directions, runway rails 20, 2
The interval of 0 will change. Since the weight of the runway rail 20 and the entire lower structure thereof is constantly applied to the hanging members 50, 50, if the horizontal force of tilting the hanging member 50 disappears, the horizontal component force of the vertical load due to the weight is eliminated. The action immediately returns to the vertical state. When the inclination of the left and right suspension members 50, 50 changes, the height position of the runway rails 20, 20 also changes.

The girder rail 30 has trolleys 6 running on the runway rails 20, 20 near both left and right ends.
It is suspended and supported at 0. Trolley 60 and girder rail 30 have spherical head nut 622 and bracket 5
They are connected by a ball joint mechanism by 30. A trolley 70 also travels on the girder rail 30, and an article W to be transported is hung on the trolley 70 via a transporting means 40 (not shown).

If one end of the girder rail 30 is moved in the direction perpendicular to the plane of FIG. 6, the distance between the ends of the girder rail 30 connected to the trolleys 60, 60 does not change, so the runway rail 20, By moving the 20 horizontally so as to narrow the gap, the trolley 6
Keep the distance between 0 and 60 unchanged. That is, the girder rail 30 and the runway rails 20, 20
The crossing angle of can be freely changed within the range where the runway rails 20, 20 can be moved horizontally. When one side of the girder rail 30 moves, the slanted suspension member 50 tries to return to the vertical direction, so that the opposite side of the girder rail 30 also moves to the same position as the previously moved side. Therefore, no matter how the girder rail 30 is moved, the hanging members 50, 50 that have once tilted always return vertically, and as a result, the intersection angle of the girder rail 30 with respect to the runway rail always returns to the original state. .

During the above-mentioned operation, the left and right suspension members 50,
Even if the height of the runway rails 20, 20 changes due to the change of the inclination of 50, the girder rail 30
Since the girder rail 30 can be tilted in the vertical direction by the action of the ball joint mechanism that connects the trolley 60 of the runway rail 20 with the runway rail 20, it is possible to follow the change in the height position of the runway rail 20, Two
It does not limit the horizontal movement of 0.

When trying to move the article W, the trolley 7
When 0, the vehicle does not start running until a force exceeding the static friction resistance is applied. However, since the horizontal force for moving the article W has the effect of tilting the suspension member 50, the inclination of the suspension member 50 causes the runway rail 20 to move horizontally, resulting in the movement of the article W. Will start.
That is, the movement of the article W is started even by applying a slight horizontal force. When the force applied to the article W becomes large, the traveling of the trolley 70 is started. Therefore, a smooth transition is made from the start of the traveling of the article W to the full-scale traveling operation of the article W by the traveling of the trolley 70. When the traveling of the trolley 70 is started, the frictional resistance is reduced, so that the horizontal force for tilting the suspension member 50 is reduced, the suspension member 50 returns to the vertical posture, and the runway rail 20 also returns to the original position. .

Next, as shown in FIG. 7, when the article W is moved in a direction orthogonal to the girder rail 30, the ball joint mechanism consisting of the spherical head nut 622 and the bracket 630 acts on the upper part of the girder rail 30. The girder rail 30 tilts. At this time, the suspension member 50 that suspends the runway rail 20 can also be tilted. The trolley 60 traveling on the runway rail 20 also starts traveling if a force exceeding the static friction resistance acts. That is,
If the user tries to move the article W, he will immediately start exercising. Even if the girder rail 30 is tilted, the trolley 70 of the girder rail 30 is
Since it leans in the same posture as above, smooth running is possible.
When the trolley 60 of the runway rail 20 goes too far when trying to stop the movement of the article W, the girder rail 30 or the suspension member 50 tilts, absorbs the inertial force of the trolley 60, and keeps the trolley 60 at the true position of the article W. Can be returned to the upper position.

Next, FIG. 8 and subsequent figures show an embodiment having a structure different from that of the above-mentioned embodiment. In addition, the same reference numerals are given to the structures common to the above-mentioned embodiments, and the duplicated description will be omitted. In the embodiment shown in FIG. 8, two girder rails 30 are used. One girder rail 30
Equipped with a hoist 40 similar to the above,
A vacuum suction device 116 is attached to the lower part of FIG. This vacuum suction device 116
Then, the article W such as a plate material is suction-held and conveyed. A hose 115 for vacuum suction or air supply is connected to the vacuum suction device 116, and the hose 115 is attached to the other girder rail 30 by the spring balancer 1.
We support with 10. This girder rail 30 has a control panel 1 for controlling the operation of the vacuum suction device 116 and the like.
12 is also attached.

Next, in the embodiment shown in FIG. 9, the stacker device 120 is attached to the two girder rails 30, 30 via the trolley 70. The stacker device 120, with respect to the girder rails 30, 30,
It is mounted so that it can rotate horizontally within a certain angle range.
The stacker device 120 is provided with a transport arm 122 on which a plate-shaped article W is placed. By the operation of the worker M, the transport arm 122 is moved up and down to handle the article W.

In the embodiment shown in FIG. 10, as a runway rail, one linear runway rail 20a is provided, and the other one is a straight line parallel to the linear rail 20a and a fixed end of the linear rail 20a. An elliptical rail 20b composed of an arc surrounded by a distance is installed. Garter rail 3
In 0, the runway rails 20a and 20b perform the same movement as in the above-described embodiment or the like at a position where the runway rails 20a and 20b are parallel straight lines. Then, with one end of the garter rail 30 positioned at the end of the linear rail 20a, the other end of the girder rail 30 turns around the circular arc portion of the elliptical rail 20b.
A stacker mast device 130 is attached to the girder rail 30 via a trolley 70. A vacuum suction pad device 136 is attached to the stacker mast device 130 via a balance cylinder 132, and a plate-like article W can be suction-held on the lower surface of the vacuum suction pad device 136.

In this embodiment, the article W can be freely transported in the oval space formed by the runway rails 20a and 20b. In the present invention, since the girder rail 30 is supported by the trolley 60 traveling on the runway rails 20a and 20b via the ball joint mechanism, such complicated movement can be performed smoothly. Figure 11
In the embodiment shown in (1), the straight rail 20d and the deformed rail 20c in which a part of the straight line swells are arranged as the runway rails. In this arrangement, the runway rail 20
Although the distance between c and 20d changes depending on the location, the girder rail 30 can be moved smoothly even if the distance between the runway rails 20c and 20d changes due to the provision of the mechanism such as the hanging member 50 described above.

In the embodiment shown in FIG. 12, meandering rails 20e, 20e are used as runway rails. Even with such a complicated curved rail arrangement, the girder rail 30 can be moved smoothly with the structure of the present invention. In the embodiment shown in FIG. 13, linear runway rails 20, 20 are arranged in a V shape. Thus, even if the runway rails 20, 20 are not parallel to each other, the girder rail 30 can be smoothly moved without any trouble. Therefore, in this embodiment, when the runway rails 20, 20 are installed in parallel, the runway rails 20 and 20 collide with an obstacle x as shown in the drawing at a mounting position on the ceiling surface,
This structure is effective when the factory installation space is limited.

In the embodiment shown in FIG. 14, the linear runway rails 20, 20 are arranged in parallel with each other in the longitudinal direction so as to be shifted forward and backward. This embodiment is also effective when there is an obstacle x near the ends of any of the runway rails 20, 20. Further, it is also possible to install only the runway rail 20 on one side from the building h of the factory so as to project to the outside and use it for delivery of articles inside and outside the factory.

In the embodiment shown in FIG. 15, a plurality of runway rails 20 ... Are arranged at different vertical positions. As described above, even if the height positions of the runway rails 20 are different, the parallel movement of the respective runway rails 20 due to the inclination of the suspension member 50, the movement of the crossing angle of the girder rails 30, and the like are not hindered. Done smoothly without.

[0049]

As described above, in the overhead traveling crane according to the present invention, the runway rail is supported on the ceiling surface by the hanging member via the ball joint mechanism at the upper and lower connecting points, and the runway rail travels. Since the ball joint mechanism is also provided at the connecting portion between the means and the girder rail, it becomes possible to smoothly convey the article held by the conveying means of the girder rail in an arbitrary trajectory in an arbitrary direction. .

In particular, the movement of the article can be started and stopped very smoothly at the time of starting and stopping the movement of the article or changing the direction of the article, so that the article can be handled very easily. Moreover, the ball joint mechanism itself is a relatively simple structural device and does not require a complicated actuating mechanism or parts. Therefore, the cost is low and the bulk is low. Other than the ball joint mechanism, a structure similar to that of a normal overhead traveling crane can be adopted, so that the overall structure of the overhead traveling crane is simplified and excellent in economical efficiency.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall structure of an overhead traveling crane showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a runway rail mounting structure.

FIG. 3 is a sectional view showing a mounting structure of a girder rail.

FIG. 4 is an exploded perspective view showing a mounting structure of a runway rail.

FIG. 5 is an exploded perspective view showing a mounting structure of a girder rail.

FIG. 6 is a schematic diagram illustrating an operating state of an overhead traveling crane with respect to a surface orthogonal to a runway rail.

FIG. 7 is a schematic diagram illustrating an operating state of an overhead traveling crane with respect to a plane orthogonal to a garter rail.

FIG. 8 is a perspective view showing another embodiment.

FIG. 9 is a perspective view showing another embodiment.

FIG. 10 is a perspective view showing another embodiment.

FIG. 11 is a perspective view showing another embodiment.

FIG. 12 is a perspective view showing another embodiment.

FIG. 13 is a schematic plan view of a rail arrangement showing another embodiment.

FIG. 14 is a schematic plan view of a rail arrangement showing another embodiment.

FIG. 15 is a schematic side view of a rail arrangement showing another embodiment.

[Explanation of symbols]

 10 Beam 20 Runway Rail 30 Girder Rail 40 Hoist 50 Suspension Member 522 Spherical Head 530 Bracket 60 Trolley 622 Spherical Head Nut 630 Bracket 70 Trolley W Transported Articles

Claims (3)

[Claims] 1. A runway rail installed on a ceiling surface, and a girder rail arranged in a direction in which an article transporting means travels and intersects the runway rail. The girder rail is provided at a plurality of positions in the longitudinal direction. In an overhead traveling crane that is supported by a traveling means that travels on rails, runway rails are supported on the ceiling surface via suspension members at a plurality of positions in the length direction, and the runway rails and the runway rails are suspended. Both the connecting point with the lower member and the connecting point with the hanging member and the ceiling surface are connected by a ball joint mechanism, and the connecting point between the traveling means running on the runway rail and the girder rail is also a ball joint. An overhead traveling crane characterized by being connected by a mechanism. 2. The overhead traveling crane according to claim 1,
An overhead traveling crane whose runway rails are curved. 3. The overhead traveling crane according to claim 1, wherein a distance between a pair of opposing runway rails for suspending and supporting both ends of the girder rail is different depending on a place.