JPH0147365B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an overturning device for overturning elongated members such as rails and shaped steel.

BACKGROUND ART When a rail is subjected to heat treatment such as hardening, the rail may become bent, and for this reason, the hardened rail is straightened using a press straightening machine. When press straightening a rail, it is necessary to overturn the rail depending on the direction in which it bends, change the position, and correct the rail. Conventionally, rails are overturned manually using a crowbar using a lever.

Problems to be Solved by the Invention However, manually overturning the rails not only requires a large amount of force, but also requires skill and is dangerous. Furthermore, as rails have become larger and longer in recent years, the weight of one rail has become nearly 2 tons, and the ability to overturn a rail by hand is reaching its limit. An alternative method is to use a crane to hang a hook on a rail and cause it to fall over, but this method requires work to hang the hook, and depends on the operating status of the crane. This poses problems such as poor work efficiency.

The present invention was made in view of the current situation, and an object of the present invention is to provide a tipping device that can automatically tip a long member such as a rail from side to side.

Means for Solving the Problems The present invention, which has been made to solve the above problems, is a device for overturning a long member 15 such as a rail shaped steel, and comprises a horizontally movable cart 4 and a horizontally movable cart 4. A first drive device 6 for reciprocating movement, a guide plate 10 held on the truck so as to be rotatable around an axis perpendicular to the moving direction of the truck, and a second drive device 12 for rotating the guide plate. The guide plate is formed with a notch 13 for supporting a long member that is symmetrical with respect to the line The gist of the present invention is an elongated member overturning device 1 characterized by having a rotatable pawl 17 arranged therein and a third drive device 18 for rotating the pawl.

Effect According to the overturning device 1 having the above configuration, FIGS. 3 to 7
As shown in the figure, from a position away from a long member such as a rail 15 on which the guide plate 10 is to be overturned,
By moving the rail 15 horizontally so that it enters the notch 13, and then rotating it while moving horizontally, the rail 15 can be slightly lifted and overturned. At this time, the guide plate 10
Since the notches formed in are symmetrical with respect to the line X--X passing through the center of rotation, the rail can be overturned in either the left or right direction by changing the direction of movement and rotation of the guide plate. Furthermore,
Since claws 17 and a device for rotating the claws are provided at the ends of both sides of the notch 13, when the rail falls, the claws 17 can grip the bottom of the rail between it and the guide plate 10. The rail 15 will not jump out of the notch 13 and cause trouble when falling.

Embodiments Hereinafter, preferred embodiments of the present invention shown in the drawings will be described.

1 and 2 are a side sectional view and a top view showing a rail overturning device 1 according to an embodiment of the present invention. The rail overturning device 1 has a fixed frame 2, which is provided with a pair of horizontal guide rails 3.
A cart 4 is held on the guide rail 3 via rollers 5 so as to be horizontally movable. A first drive device 6 for reciprocating the truck 4 is connected to the lower part of the truck 4. In the illustrated embodiment, the first drive device 6
Although a hydraulic cylinder is used as the hydraulic cylinder, a pneumatic cylinder may be used instead of the hydraulic cylinder, and furthermore, a motor and a chain or gear that converts the rotation of the motor into linear motion may be used.

A pair of guide plates 10 are rotatably held on the truck 4 by pins 11. This pin 11 is disposed horizontally and perpendicular to the direction of movement of the carriage 4, so that the guide plate 10 is rotatable about an axis that is perpendicular to and horizontal to the direction of movement of the carriage 4. Furthermore, a second drive device 12 is connected to the guide plate 10 to rotate the guide plate. Although the second drive device 12 is also illustrated as a hydraulic cylinder,
Other devices besides hydraulic cylinders may be used. A substantially V-shaped rail support notch 13 is formed in the guide plate 10. As shown in FIG. 4, the notches 13 are arranged symmetrically with respect to the line XX passing through the center of rotation of the guide plate 10. The angle α formed by the notch 13 is determined according to the cross-sectional shape of the rail 15 to be overturned, and as shown in FIG. 4, when one side is parallel to the bottom of the rail, the other side is parallel to the rail head and bottom. It is set so that it can come into contact with the side of the The inner surface of the notch 13 is made of soft material so as not to damage the rail 15.
For example, it is desirable to paste resin. In addition,
The connection point of the second drive device 12 to the guide plate 10 is also determined to be located on the line XX.

Two claws 17 are rotatably provided between the pair of guide plates 10 so as to be located at the ends of both sides of the notch 13. The pawl 17 is rotatable between a position outside the notch 13 as shown in FIG. 3 and a position protruding into the notch so as to sandwich the bottom of the rail 15 as shown in FIG. Each pawl is connected to a third drive device 18 that rotates the pawl. Although the illustrated hydraulic cylinder is suitable as the third drive device 18, other devices may be used instead. It is desirable that a soft material such as resin be applied to the claws 17 as well so as not to damage the rail.

The overturning device 1 having the above structure is installed at a position where it can come into contact with the end of a rail to be overturned, for example, a rail mounted on a rail mounting frame of a straightening press.

Next, a method of using the overturning device having the above structure will be explained. In FIG. 3, the rail 15 to be overturned
is placed on a pedestal 20 of the straightening press indicated by a two-dot chain line. The guide plate 10 is connected to the rail 1 as shown in the figure.
5, and its notch 13
The lower side of is almost horizontal. In this state, the cart 4 is moved to the right. Then, the guide plate 10 moves to the right, and the rail 15 enters into the notch 13, as shown in FIG. Next, the lower third drive device 18 is operated to rotate the claws 17, and the bottom of the rail 15 is pinched between the claws 17 as shown in FIG. Next, while moving the cart 4 to the right, the second drive device 12 is operated to rotate the guide plate 10 counterclockwise. By this operation, the guide plate 10 is rotated counterclockwise while moving to the right as a whole, as shown in FIGS. 5 and 6, and the rail 15 is slightly lifted and tipped over to the left. At this time, as can be clearly seen from FIG. 5, since the guide plate 10 as a whole moves to the right, the rail 15 does not move much in the lateral direction regardless of the rotation of the guide plate 10, and almost Fall down in the same position. For this reason, the guide plate 1 can be used even for heavy rails.
The force required to rotate the guide plate 1 may be small.
The drive device 12 that rotates 0 may be small. When the guide plate 10 rotates to the state shown in FIG. 6, the rail 15 is supported by the pedestal 20, so the claw 17 is rotated to release the grip on the rail 15, as shown in FIG. By moving the trolley 4 to the right, the guide plate 10 is moved to the right. This completes the operation of causing the upright rail 15 to fall to the left.

To raise the rail 15 lying in the state shown in FIG. 7, the above-mentioned operation can be performed in reverse. Furthermore, in order to overturn the upright rail to the right, it is sufficient to perform an operation symmetrical to that described above. That is, with respect to the upright rail 15, the guide plate 10 is placed in the state shown in FIG. 7, and the guide plate 10 is moved to the left to open the notch 13.
The rail is inserted into the rail, the lower claw 17 is rotated to grip the bottom of the rail, and the guide plate is rotated clockwise while moving to the left.

Note that the above explanation is for the case where the overturning device of the present invention is used for overturning rails, but this overturning device is not limited to rails, and can be applied to I-beams, H-beams, L-beams, etc.
It can also be used for overturning long members such as shaped steel.

Effects of the Invention As described above, the elongated member overturning device of the present invention has the following features:
It is possible to automatically overturn a long member such as a rail or a shaped steel placed on a pedestal in either the left or right direction without moving it laterally much. Therefore, the elongated member can be easily turned over even in a narrow place such as inside the opening of the straightening press. Moreover, since the guide plate used for overturning can be moved together with the trolley to a location away from the long member, it is easy to see when visually inspecting the long member for bending.
Further, there is an effect that there is no problem in carrying in and out of the elongated member.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a preferred embodiment of the present invention, FIG. 2 is a top view thereof, and FIGS. 3 to 7 are diagrams for explaining the rail overturning operation in the above embodiment. 1... Tipping device, 2... Fixed frame, 3...
Guide rail, 4... Cart, 6... First drive device, 10... Guide plate, 12... Second drive device,
13...Notch, 15...Rail, 17...Claw, 1
8... Third drive device, 20... Frame.

Claims (1)

[Claims] 1 A device for overturning long members such as rails and shaped steel, which includes a horizontally movable cart, a first drive device that reciprocates the cart, and an axis perpendicular to the direction of movement of the cart. It has a guide plate rotatably held as a center, and a second drive device for rotating the guide plate, and the guide plate has a long member symmetrical with respect to a line passing through the center of rotation. A supporting notch is formed, and the guide plate further includes rotatable pawls disposed at the tips on both sides of the notch, and a third drive device for rotating the pawls. A device for overturning long members.