JPH0452236Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a traversing device for a traveling crane configured to allow a trolley attached to a traversing rail to travel by itself due to its gravity.

[Conventional technology]

BACKGROUND ART Conventionally, as a means for moving a trolley between a workpiece hoisting place and a workpiece hoisting place along a traverse rail, an electric motor or the like is generally used as a drive source.

In addition, the trolley traveling surface of the traverse rail is sloped high on the workpiece lifting site side and low on the workpiece lifting site side, and the transition of the trolley from the workpiece lifting site to the workpiece unloading site is performed by gravity applied to the trolley. , the movement of the trolley in the opposite direction is carried out by an electric motor, which was developed in 1982.
-Disclosed in Publication No. 146378.

[Problem that the invention attempts to solve]

However, in all of the above conventional examples, an electric motor is used as a drive source for the trolley, and when the electric motor is installed in this way, there are problems in that driving operations become frequent and costs increase.

[Means for solving problems]

This invention solves these conventional problems and
The purpose of the present invention is to provide a device that can automatically detect the presence or absence of a work suspended on a trolley and automatically tilt a traversing rail in the traversing direction of the trolley, and its gist is as follows: The trolley that suspends the workpiece is mounted so that it can run by gravity between the workpiece lifting place and the workpiece lifting place, and the transverse rail is pivoted near one end and is swingably mounted. The other end of the traversing rail is engaged with an engagement surface of a traversing rail swinging means provided on the side of the workpiece lifting and unloading area, and the traversing rail swinging means is driven by a workpiece detection means mounted on the trolley. By engaging and disengaging the other end of the traversing rail and the engaging surface of the traversing rail swinging means, the traversing rail is configured to move up and down about the pivot portion. It is located in the traversing device of the traveling crane.

〔Example〕

Hereinafter, the present invention will be explained in detail based on the embodiment shown in Figs. , and an engaging member 5.

6 is a ceiling, and the transverse rail 2 is swingably supported by a pivot 10 by a fixed member 8 fixed to the ceiling 6, and the length of the part on the left side of the pivot 10 is sufficiently longer than the length of the part on the right side. It is supported near the right end of the transverse rail 2. Note that 11 in the figure is a balance weight fixed to the right end of the transverse rail 2.

Reference numeral 12 denotes a trolley, which is movable in the left-right direction (direction of arrow A-B) of the transverse rail 2.
That is, if the traversing rail 2 is inclined, the trolley 12 is mounted so as to be self-propelled by gravity, and the hydraulic cylinder 3, which is an example of a workpiece detector, is attached to the lower end of the trolley 12.

The hydraulic cylinder 3 includes a cylinder 13 and a piston 14, and the piston 14 is urged upward by a compression spring 15 housed within the cylinder 13. The cylinder 13 is separated into an upper oil chamber 13A and a lower oil chamber 13B by a piston 14, and a hoist 18 is attached to the lower end of the rod 14a of the piston 14 that protrudes outward from the cylinder 13. A workpiece (load) 20 is suspended by a rope 19 that is operated vertically by the hoist 18.

Further, the hydraulic cylinder 4, which is an example of an actuator, includes a cylinder 22 and a piston 23, and the cylinder 22 is connected to the left oil chamber 2 by the piston 23.
The left oil chamber 22A is connected to the upper oil chamber 13A of the hydraulic cylinder 3 through a pipe 25A, and the right oil chamber 22B is connected to the lower oil chamber 13B of the hydraulic cylinder 3 through a pipe 25B. It is connected in communication. This hydraulic cylinder 4 is mounted on a pedestal 21 fixed to the ceiling 6 on the left end side of the transverse rail 2.

Further, the engagement member 5 is mounted on the pedestal 21 adjacent to the right side of the hydraulic cylinder 4, and
The rod 23a of the piston 23 protrudes outward from the
It is attached to the right end of the The engagement surface 5a, which is the upper surface of the engagement member 5, is formed such that, for example, the right side, that is, the workpiece lifting place 25 side is low, and the left side, that is, the workpiece lifting place 26 side, is high and inclined. The distal end portion 2a of the transverse rail 2 is adapted to engage with the distal end portion 2a of the transverse rail 2.

Finally, to explain the operation of the embodiment of the present invention,
FIG. 1 shows a case where the trolley 12 is located above the workpiece lifting station 25, and the traversing rail 2 is held in a horizontal state by a balance weight 11.

When the workpiece 20 is suspended on the rope 19 in this state, the piston 14 of the hydraulic cylinder 3 is pressed against the compression spring 1.
It is pressed downward against the spring force of 5. Then, the oil discharged from the lower oil chamber 13b flows into the right oil chamber 22B of the hydraulic cylinder 4 through the pipe 25B, and the piston 23 moves to the left together with the engagement member 5, as shown in FIG. do.

At the same time, the traversing rail 2 swings about the shaft 10 in the direction of arrow C along the engagement surface 5a of the engagement member 5, and as shown in the figure, when it tilts downward to the left, the trolley 12 and the hydraulic cylinder 3. Due to the gravity of the hoist 18, workpiece 20, etc., the trolley 12 moves to the left, that is, toward the workpiece hoisting and unloading area 26, and comes into contact with a stopper (not shown) and stops above the workpiece hoisting and unloading area 26.

Here, the hoist 18 is operated and the rope 19
and lower the workpiece 2 to the workpiece hoisting and unloading area 26.
0 is posted, and as shown in FIG. 3, when the work 20 is removed from the rope 19, the hydraulic cylinder 3
The piston 14 is raised by the restoring force of the compression spring 15.

Then, the oil discharged from the upper oil chamber 13A passes through the pipe 25A to the left oil chamber 22A of the hydraulic cylinder 4.
As shown in the figure, the piston 23 moves rightward together with the engaging member 5. At the same time, when the transverse rail 2 swings about the pivot 10 in the direction of arrow D along the engagement surface 5a of the engagement member 5 and tilts upward to the left as shown in the figure, various gravitational forces As a result, the trolley 12 moves to the right, that is, toward the workpiece lifting place 25, comes into contact with a stopper (not shown), and stops above the workpiece lifting place 25.
Again the traversing rail 2 is held in a horizontal position as shown in FIG.

According to the traversing device 1 of the present invention as described above, for example, the belt conveyor 3 is installed in the workpiece lifting and unloading place 26.
When assembling the workpiece 20 to a product to be assembled on the belt conveyor 30, the trolley 12 equipped with the hoist 18 automatically moves between the workpiece lifting area 25 and the workpiece lifting area 26. This greatly reduces the number of man-hours required. Note that the workpiece detector 3 may detect the presence or absence of the workpiece 20 using a load cell or a limit switch. Further, the actuator 4 is not limited to a hydraulic cylinder, but may be a pneumatic cylinder. Furthermore, the engagement surface 5 of the engagement member 5
Alternatively, a may be an eccentric cam surface to rotate the engaging member 5. Also, by using the present invention, the rails of the traverser in the X and Y directions can be tilted at the same time,
It is possible to save labor not only in the front and rear directions but also in the horizontal direction.

[Effect of idea]

As described above, the traversing device for a traveling crane according to the present invention has a traversing rail attached to one end of the traversing rail, which is installed so that the trolley for suspending a workpiece can travel by gravity between a workpiece lifting place and a workpiece lifting place. If it is pivoted nearby and swingably mounted,
The other end of the traversing rail is engaged with an engagement surface of a traversing rail swinging means provided on the side of the workpiece hoisting and unloading area, and the traversing rail swinging means is driven by a workpiece detection means mounted on the trolley. By engaging and disengaging the other end of the traversing rail and the engaging surface of the traversing rail swinging means, the traversing rail is configured to move up and down around the pivot portion, so that the workpiece Depending on the presence or absence of the trolley, the traversing rail swings vertically with respect to the horizontal plane, and the trolley automatically traverses between the work lifting area and the work lifting area due to gravity.

Therefore, the number of steps involved in trolley traverse work can be significantly reduced, and the structure is simple, so it can be provided at a low price.

[Brief explanation of the drawing]

Figure 1 is a schematic front view showing the state of the traversing device of the traveling crane when the trolley is located above the workpiece lifting area, and Figure 2 is a schematic front view of the traveling crane when the workpiece is lifted on the trolley in the state shown in Figure 1. FIG. 3 is a schematic front view showing the state of the traversing device of the traveling crane when the trolley is located above the workpiece lifting and unloading area. DESCRIPTION OF SYMBOLS 1...Traversing device of a traveling crane, 2...Traversing rail, 2a...Top end of the traveling rail, 3...Hydraulic cylinder which is an example of a workpiece detector, 4...Hydraulic cylinder which is an example of an actuator, 5...Register Matching member, 5a... Engagement surface, 12... Trolley, 20...
...Work, 25...Work lifting place, 26...
Work loading and unloading area.

Claims (1)

[Scope of utility model registration request] The trolley that suspends the workpiece is mounted so that it can run by gravity between the workpiece lifting place and the workpiece lifting place, and the transverse rail is pivoted near one end and is swingably mounted. the other end of the traversing rail is engaged with an engagement surface of a traversing rail swinging means provided on the workpiece lifting and unloading station side;
The workpiece detecting means attached to the trolley drives the transverse rail swinging means to engage and disengage the other end of the transverse rail and the engagement surface of the transverse rail swinging means, so that the transverse rail pivots. A traversing device for a traveling crane, characterized in that it is configured to move up and down centering on a landing section.