JP3115728U - Rail lifting device - Google Patents

Abstract

[PROBLEMS] To lift a mechanical rail without directly passing it through a wire, in response to the problem that the side of the rail head, which is a long and peculiar length of track rails, is extremely narrow, and at the same time, is sandwiched between them. It was decided that the work could be performed, and that the lock was applied so that the clamp could not be opened with the rail sandwiched from the left and right, so that the track rail could be lifted more safely.
SOLUTION: Two front and rear clamps that sandwich the head of the rail from the left and right, and a lock arm that is reversed in a direction orthogonal to the reversing direction of the clamps are respectively supported by the hanging brackets, and the front and rear clamps are rails. With the head clamped from the left and right, the front and rear clamps can be locked so that the track rail can be mechanically lifted without relying on the wire hook, and the clamp can be opened with the rail clamped from the left and right. This is a rail lifting device that makes it possible to lift the rails more safely.
[Selection] Figure 1

Description

The present invention relates to a rail lifting device used for lifting a rail and transporting it to a destination.

Generally, the rails are usually lifted by passing both ends of the rails through the lower end loop of the wire and transporting them with a crane. However, these rails are as long as 25 m, and the weight is about 1 ton, and there is a danger that the rails will be out of balance and slip out when working with a simple wire hook.
Therefore, a method of mechanically clamping the rail can be considered. Basically, the object is clamped by clamps from the left and right as in the above document. However, since this document clamps a steel plate, the clamping surface of the clamp can be considerably widened. However, it is not very easy to use this idea as it is for lifting the track rail.
That is, as described above, the track rail is an I-type long and quite heavy object, and the side surface of the rail head that is the clamping surface is extremely narrow, so that it has a wide area like a steel plate. Issues remain where clamping is not possible.
3-38885

The present invention is a long and peculiar heavy thing peculiar to the track rail, and at the same time, the side of the rail head that is the clamping surface is extremely narrow, so it is mechanically lifted without passing it directly through the wire It was decided that the work could be performed, and that the lock was applied so that the clamp could not be opened with the rail sandwiched from the left and right, so that the track rail could be lifted more safely.

  In order to solve the above, the present invention has two suspension clamps that clamp the head of the rail from the left and right sides, and a lock arm that is reversed in a direction orthogonal to the reversing direction of the clamp, respectively, to the hanging bracket, In the state where the front and rear clamps clamp the rail head from the left and right, the front and rear clamps can be locked so that the track rail can be mechanically lifted without relying on the wire hooks, and the rail is sandwiched from the left and right. It was decided that the clamp could not be opened in this state, and that the track rail could be lifted more safely.

(1) According to claim 1, even if the side of the rail head which is a long and peculiar weight of track rail is extremely narrow, the hooking claws of the two front and rear clamps are located on the head from the left and right. The lock arm of the lock arm intervenes between the engaging parts of the front and rear clamps when the hook of the clamp holds the head of the I-type rail from the left and right. Therefore, the locked clamp is not opened, and the rail can be lifted safely without dropping the rail from the clamp.
(2) According to claim 2, as the clamp is lowered, the inclined surface of the hooking claw is along the rail head, and the clamp is naturally spread by its own weight so that it is caught so as to embrace the neck of the head. It can be done more safely.

(3) According to claim 3, when the rails are lowered to a predetermined place after being transported, if the upper end levers of the clamps are pulled inward, the hooking claws at the lower ends can be opened from each other around the shaft. The clamp can be easily released, and a single operator operates with both hands, so that the hand is not brought near the hooking claw of the rail and the clamp, thus improving the safety of the work.
(4) According to claim 4, when the wire is pulled, as the fastening lever of the lock arm rotates from the inclined state to the vertical state, the lock portion intervenes between the engaging portions of the front and rear clamps, and the clamp is automatically performed. Thus, the lifting operation can be carried out very efficiently and accurately.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a description will be given based on the drawings showing an embodiment of the present invention.
As shown in FIGS. 1 and 2, the I-shaped rail Т for the track is composed of a head Тa, a neck Тb, and a seating portion Тc. As shown in FIGS. 3, 4, and 5, the hanging bracket 1 of this rail Т has front and rear support plates 3, 3 that are parallel to the upper surface of the base 2, and left and right frame plates 4, 4 that are perpendicular to this. In addition, the frame plates 4 and 4 are formed with window holes 5 and 5 so that the front and rear support plates 3 and 3 stand upright at regular intervals. Two front and rear clamps 6 and 6 are supported between the front and rear support plates 3 and 3 so as to be reversed left and right by a shaft 8 whose upper end is inserted into the shaft hole 7. Further, hooks 6a, 6a for clamping the rail head Тa from the left and right at the lower ends of the front and rear clamps 6, 6
Have In FIG. 1, the state where the front and rear clamps 6 and 6 are opened is indicated by broken lines. The hooking claws 6a and 6a are formed by overhanging portions 6b and 6b for embedding the neck portion Тb of the rail head portion Тa and inclined surfaces 6c and 6c.
A lock arm 9 is supported between the left and right frame plates 4 and 4 by a shaft 11 whose upper end is inserted into the shaft hole 10 so as to be reversed in a direction orthogonal to the reversing direction of the clamps 6 and 6. In FIG. 2, a state where the lock arm 9 is opened is indicated by a broken line.

A lock portion 9a is provided at the lower end of the lock arm 9, and the front and rear clamps 6a, 6a, 6c in the state where the catch claws 6a, 6a of the clamps 6, 6 sandwich the rail head Тa from the left and right as shown in FIG. , 6 is interposed between the engaging portions 12 and 12. Thus, the engaging portions 12 and 12 only have to be such that the lock arm 9 is reversed and engaged with the lock portion 9a. It is good also as a rod shape.
Further, the foot 13 of the lock arm 9 hangs down, and the rail head Тa is pressed from the upper side, and the rail head Тa is held at three points with the lower hooking claws 6a, 6a to be surely lifted.
Furthermore, the lock arm 9 has a fastening lever 14 for the suspension wire W. The fastening lever 14 is inclined at a certain angle R from the longitudinal center line XX of the shaft 11 and is pulled vertically from the inclined state by pulling the wire W. The lock portion 9a of the lock arm 9 intervenes between the engagement portions 12 and 12 of the front and rear clamps 6 and 6 as it rotates to the state. Of course, the wire W may be suspended directly on the frame plates 4 and 4.
A handshake 15 is provided so that the lock arm 9 can be easily operated.

The levers 16 and 16 are provided at the upper ends of the front and rear clamps 6 and 6, respectively, and the hooks 6a and 6a at the lower ends are opened from each other around the shaft 8 by pulling them inward.

Front view showing the inventive rail lifting device Side view Front view of hanging bracket Side view Same as above Front view of clamp Front view of lock arm Exploded perspective view

Explanation of symbols

Т Type I rail Тa head
Тb neck
1 Hanging bracket
2 base
3 Front and rear support plates
4 Left and right frames 6 Front and rear clamps 6a Hook claw 6c Hook claw 8 Shaft 9 Lock arm 11 Shaft 12 Engagement section 13 Foot piece 14 Lever 16 Lever W Wire

Claims (4)

A hanging bracket made up of a front and rear support plate and a left and right frame plate perpendicular to the front and rear support plate, and a hooking claw that holds the head of the I-shaped rail from the left and right at the lower end and an engagement portion at the upper end Each of the front and rear clamps, and the front and rear support plates are pivotally supported so that the front and rear clamps are reversed to the left and right. The lock arm of the lock arm intervenes between the engagement parts of the front and rear clamps in a state where the shaft is supported between the frame plates and the hooking claws of the front and rear clamps hold the head of the I-type rail from the left and right. A rail lifting device. The front and rear clamp hooking claws are formed so that the neck portion of the head of the I-shaped rail is hung, and the claw is formed from the overhanging portion so that the gap between the claws is wide. The rail lifting device according to claim 1, wherein the rail lifting device is formed of an inclined surface that is reversed. The rail lifting device according to claim 1, wherein a lever is provided at each upper end of each of the front and rear clamps, and the hooking claws at the lower end are opened with respect to each other by pulling them inward. The lock arm has a suspension lever for the hanging wire, and this lever is inclined at a certain angle from the longitudinal center line of the shaft, and the lock portion of the lock arm is moved as it is rotated from the inclined state to the vertical state by pulling the wire. The rail lifting device according to claim 1, wherein the rail lifting device intervenes between the engaging portions of the front and rear clamps.

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