JPH07172757A - Rail suspension device - Google Patents

Abstract

PURPOSE:To reduce the number of operators as well as improve the efficiency of lifting and lowering operations. CONSTITUTION:In this rail suspension device, a driving shaft 8 being reversibly rotatable and a holding member 12 are installed in a frame panel 4 of a frame body 3 to be attached to a crane's hoisting accessory, and a thread part 8a is installed in this driving shaft 8, while a support plate 13 is attached to this part 8a free of lifting motion, attaching the upper end of a lifting member 14 to this support plate 13. On the other hand, a pair of clamp claws 17 are attached to a long hole 16 at a lower end of this lifting member 14 free of rotation via a support pin 18, and further these paired clamp claws 17 are attached to the holding member 12 free of rotation via an active pin 19, and then the support plate 13 and the lifting member 14 are made to go up and down by means of rotation of the driving shaft 8, whereby the paired clamp claws 17 are hold them in either state of being opened or closed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail suspension device used when moving a rail in a factory or the like.

[0002]

2. Description of the Related Art Conventionally, at a rail assembly plant, a plurality of rails each having a length of about 50 m are connected to each other by welding in accordance with the length of the rails to be laid, and for example, a work of assembling a rail having a length of about 200 m is performed. There is. Since the assembled rail is a heavy object, to move it to another place, hook the wire of the crane on the rail holder at multiple points and lift it up, then convey it to the desired position and hang it up. It has been lowered.

[0003]

However, in the conventional rail hoisting device, when hoisting the rail, an operator manually holds the rail at a plurality of places or hoists the rail. Since the rail must be removed from the holder at each place when placing it in the desired place, the lifting work and the unloading work are very complicated, and many workers are required.
There was a problem that workability could not be improved.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a rail suspension device capable of reducing the number of workers and improving the efficiency of lifting work and lifting work. To provide.

[0005]

In order to solve the above-mentioned problems of the prior art, in the present invention, the rails are attached to a lifting tool of a crane at a predetermined interval and hold the rails when the rails are moved. In the rail suspension device
A frame main body attached to the suspender is provided with a drive shaft and a holding member that can rotate in both forward and reverse directions, a screw portion is provided on the drive shaft, and a support plate is attached to the screw portion so as to be vertically movable. While one end of the hanging member is attached to the plate, a pair of clamp claws is rotatably attached to a long hole of the other end of the hanging member via a support pin, and the pair of clamp claws is attached to the holding member via an action pin. The clamp claws are rotatably attached, and the pair of clamp claws are held in an open or closed state by raising and lowering the support plate and the suspension member by rotation of the drive shaft. .

[0006]

In the rail suspension device according to the present invention, when the drive shaft is rotated in either forward or reverse directions by a motor or the like, the support plate and the suspension member move up and down to open and close the pair of clamp claws. The clamp claw allows the rail to be easily and surely tightened or unclamped, and the rail can be quickly moved to a desired place.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the illustrated embodiments.

1 and 2 show an embodiment of a rail suspension device according to the present invention. In the figure, reference numeral 1 denotes a plurality of hanging tools (not shown) such as a gate crane (for example, 1
It is a rail suspension device to be attached (about 5 pieces), and this rail suspension device 1 is used when moving the rail 2 assembled by welding to a length of about 200 m. For this reason, the rail suspension device 1 can be attached to the above-mentioned suspender, which is formed in a long shape corresponding to the rail 2, at a predetermined interval in the longitudinal direction.

The rail suspension device 1 has a frame body 3 attached to a suspension (not shown), and a frame panel 4 constituting the frame body 3 is provided at a lower end flange portion 3a of the frame body 3. On the other hand, a hollow shaft 5 extending in the horizontal direction is installed above the frame body 3. Then, the frame main body 3 is configured to be hung by being hooked on a bracket (not shown) of a hanging tool by inserting a shaft (not shown) into the hollow shaft 5. Further, a pair of front and rear guide frames 6 are bolted to the lower part of the frame body 3 with a frame panel 4 horizontally installed therebetween, and the rail 2 is inserted between these guide frames 6. ing.

Two through holes 7 are formed in the frame panel 4 so as to face each other with a central portion therebetween, and a lower end portion of a drive shaft 8 is rotatably supported by a bearing 9 in the central portion. The upper end of the drive shaft 8 is connected to a drive motor 11 with a reduction gear via a coupling 10. Therefore, the drive shaft 8 is driven by the drive motor 11
It is configured to be rotatable in both forward and reverse directions. Further, a holding member 12 for mounting a clamp claw described later is provided on the lower surface side of the frame panel 4.

On the other hand, a screw portion 8 is provided on the lower side of the drive shaft 8.
a is provided, and a support plate 13 that is screwed to the screw portion 8a is attached to the screw portion 8a so as to be able to move up and down. For this reason, the support plate 13 is arranged along the horizontal direction, and a screw hole 13a that is screwed into the screw portion 8a is provided in the central portion.

The upper ends of the hanging members 14 are integrally attached to the left and right sides of the support plate 13 by nuts 15. The lower ends of the hanging members 14 are located below the frame panel 4. It is formed to the length. Therefore, these hanging members 14 are arranged along the up-down direction through the through holes 7 of the frame panel 4 in a state of being attached to the support plate 13. Moreover, a long hole 16 extending in the horizontal direction (left and right direction in FIG. 1) is bored in the lower end portion of the hanging member 14, and a support pin (described later) inserted by the long hole 16 is displaced. It is configured to be able to.

Further, a pair of left and right clamp claws 17, 17 are rotatably attached to the lower end portion of the hanging member 14 and the holding member 12, respectively. Therefore, the upper portions 17a of the clamp claws 17 are formed with a wide front surface, the support pins 18 to be inserted into the elongated holes 16 of the hanging member 14 are provided on the outer side, and the mounting holes of the holding member 12 are provided on the inner side. A working pin 19 to be inserted (not shown) is provided.

Therefore, the upper part 17 of the clamp claw 17 is
a is rotatably supported by the suspending member 14 and the holding member 12 via the support pin 18 and the action pin 19, and the outer part of the ascending / descending suspension member 14 is pulled around the inward action pin 19. It is configured to be raised or pushed down, whereby the lower portions 17b of the pair of left and right clamp claws 17 are held in the open / closed state with the rail 2 interposed therebetween.

The lower part 17b of the clamp claw 17 is bent in a direction opposite to each other and formed into a hook shape. By holding the middle part 2a of the rail 2 with the left and right clamp claws 17, the lower part 17b is grasped. The rail 2 is adapted to be suspended and suspended. In addition, the lower portion 17b of the clamp claw 17 has a large-diameter upper end portion 2b of the rail 2.
It is formed so as to be caught on. For this reason, the rail 2 has upper and lower end portions 2b, 2c with a narrow intermediate portion 2a interposed therebetween.
Are formed in large diameters, and the lower surface side of the upper end large diameter portion 2b is formed in an inclined surface shape substantially corresponding to the upper surface of the hook-shaped lower portion 17b of the clamp claw 17.

The height position of the clamp claw 17 with respect to the rail 2 is detected by a sensor 20 mounted on the inner wall surface of the guide frame 6, and the drive shaft 8 is rotationally driven based on the detection signal of the sensor 20. At the same time, the support plate 13 and the hanging member 14 are moved up and down, and the clamp claws 17 are automatically opened and closed.

In order to move the rail 2 assembled to a predetermined length to a desired place by using the rail suspension device 1 of this embodiment, first, the rail suspension device 1 attached to the suspension of the crane is installed. The clamp claw 17 is arranged above the rail 2. At this time, the left and right clamp claws 17 are in an open state as shown by the chain line in FIG. Next, the sensor 20 detects the height position of the clamp claw 17, and the drive motor 11 operates based on this detection signal, so that the drive shaft 8 rotates forward.

Along with this, the support plate 13 and the suspension member 14 descend, and the left and right clamp claws 17 are closed while rotating in the directions facing each other about the action pin 19 as shown by the solid line in FIG. Grip the rail 2. Then, when the clamp claw 17 clamps the rail 2 with a predetermined tightening force, the rotation of the drive shaft 8 is stopped. After that, hoist each rail suspension device 1 simultaneously with a crane,
The transfer operation of the rail 2 is completed by transporting the rail 2 to a desired place, hanging it down, and opening and releasing the clamp claws 17 while rotating the left and right clamp claws 17 by the operation opposite to the above case.

In the rail suspension device 1 according to this embodiment, when the drive shaft 8 is normally rotated by the drive motor 11, the support plate 13 and the suspension member 14 are lowered, and the left and right clamp claws 1 are moved.
When 7 closes to grip the rail 2 and the drive motor 11 rotates the drive shaft 8 in the reverse direction, the support plate 13 and the suspension member 14 rise and the left and right clamp claws 17 open to release the clamp on the rail 2. The work of lifting and lowering the rail 2 is simplified, and the number of workers can be reduced as compared with the conventional case.

The embodiment of the present invention has been described above.
The present invention is not limited to the embodiments described above, and various modifications and changes can be made based on the technical idea of the present invention.

[0021]

As described above, the rail hoisting device according to the present invention is mounted on a hoisting tool of a crane at a predetermined interval and holds the rail when moving the rail. The frame body attached to the frame is provided with a drive shaft and a holding member that can rotate both in the forward and reverse directions, a screw part is provided on the drive shaft, and a support plate is attached to the screw part so that the support plate can be lifted and lowered. While attaching one end of the member, a pair of clamp claws are rotatably attached to a long hole at the other end of the suspension member via a support pin,
Further, the pair of clamp claws is rotatably attached to the holding member via an action pin, and the support plate and the hanging member are moved up and down by the rotation of the drive shaft to open or close the pair of clamp claws. Since it is configured so as to be held in the above state, it has the following effects.

That is, according to the rail hoisting device of the present invention, the rail can be easily and surely clamped or unclamped by the pair of clamp claws. The unloading work can be easily performed, the rail can be quickly moved to a desired place, the work efficiency can be improved, and the number of workers can be reduced as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is a front view showing a part of a rail suspension device according to an embodiment of the present invention in section.

FIG. 2 is a side view showing a part of the rail suspension device of the present embodiment in section.

[Explanation of symbols]

 1 Rail Suspension Device 2 Rail 3 Frame Main Body 4 Frame Panel 5 Hollow Shaft 7 Through Hole 8 Drive Shaft 8a Screw Part 9 Bearing 10 Coupling 11 Drive Motor 12 Holding Member 13 Support Plate 13a Screw Hole 14 Suspension Member 15 Nut 16 Long Hole 17 Clamp claw 18 Support pin 19 Action pin

Claims (1)

[Claims] 1. A rail hoisting device, which is attached to a hanging device of a crane at a predetermined interval and holds the rail when moving the rail, rotates in either a normal or reverse direction on a frame body attached to the hanging device. A possible drive shaft and a holding member are provided, and a screw portion is provided on the drive shaft,
A support plate is movably attached to the threaded portion, and one end of a suspension member is attached to the support plate, while a pair of clamp claws is rotatably attached to a long hole at the other end of the suspension member via a support pin. The pair of clamp claws are opened and closed by mounting and further rotatably mounting the pair of clamp claws to the holding member via the action pin, and lifting and lowering the support plate and the hanging member by rotation of the drive shaft. A rail suspension device characterized by being configured to be held in any state.