JP2019210765A - Rail catch - Google Patents

Abstract

To realize a rail catch capable of more suitably holding a rail.SOLUTION: A second arm 20 is rotated in a direction of raising with respect to a first arm 10 when a rail R is clamped with a rail catch 100. If the first arm 10 and the second arm 20 straddle the rail R, and the second arm 20 is rotated in a direction of lowering by its own weight after the second arm 20 is opened, then the rotation of the second arm 20 can be restricted and locked in an arrangement where a notch 11 of the first arm 10 and a slot 21 of the second arm 20 overlap by using a lock member 30, which has been moved to the lower end side of the slot 21, entering the notch 11. Thus, the rail R can be suitably held between the first arm 10 and the second arm 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rail catch used when lifting a rail.

2. Description of the Related Art Conventionally, a rail catch (rail catch with a roller) used for lifting a rail in a track maintenance work for exchanging rails is known (see, for example, FIGS. 4 and 5 of Patent Document 1).
The rail catch has a structure in which the second arm portion is pivotally supported by the first arm portion, and is configured to sandwich the rail between the first arm portion and the second arm portion.
Each of the first arm portion and the second arm portion of the rail catch is provided with a through hole so as to overlap when the rail is clamped, and by inserting a locking pin into the overlapping through hole, The two arms are locked so that the rotation of the two arms is restricted, so that the rail does not come off from the rail catch.

  In addition, the rail catch is provided with a roller that is arranged to sandwich the abdomen of the rail in a state where the rail is sandwiched between the first arm and the second arm, and vertically feeds the rail that is sandwiched and lifted. be able to.

JP2013-104217A

However, in the case of the rail catch described above, even if the through holes of the first arm part and the second arm part are aligned, it may be easily displaced, and it may be difficult to insert and lock the locking pin therein, for example, There is a problem that it becomes more difficult to insert the locking pin during nighttime work.
Also, if the locking pin is lost, the rail catch cannot be used, and if the lost part is on the track, the train may not be operated until the locking pin is found. There was a problem.

  The objective of this invention is providing the rail catch which can clamp a rail more suitably.

In order to achieve the above object, the present invention provides:
A first arm part, and a second arm part pivotally supported by the first arm part, wherein the first arm part is rotated in a direction in which the second arm part is lowered by its own weight. And a rail catch that holds the rail between the second arm part,
The first arm portion is provided with a notch that intersects the rotation direction of the second arm portion,
The second arm portion is provided with an elongated hole that intersects the rotation direction of the second arm portion, and a locking member that is movable along the elongated hole is disposed on the second arm portion. ,
The lock member which is rotated in the direction in which the second arm portion is lowered and the notch of the first arm portion and the elongated hole of the second arm portion overlap with each other and moves to the lower end side of the elongated hole is The rotation of the second arm portion is restricted by entering the notch.

If it is a rail catch of such composition, after turning in the direction which pulls up the 2nd arm part to the 1st arm part and making the 2nd arm part open, after the 1st arm part and the 2nd arm part If the second arm part is rotated in the direction of lowering by its own weight while straddling the rail, the notch of the first arm part and the elongated hole of the second arm part overlap so that the lower end side of the elongated hole is Since the moved lock member enters the notch and the rotation of the second arm portion is restricted and locked, the rail can be suitably held between the first arm portion and the second arm portion.
That is, with this rail catch, for example, as in the above-described prior art rail catch with a roller, the locking pin is inserted into the through-holes of the first arm portion and the second arm portion that are aligned, and the rail catch is rotated. Since it can be easily locked as compared with locking, the rail catch can hold the rail more suitably.

Also, preferably
The lock member is configured to be bounced by a reaction that collides with a striking portion provided in an opening portion of the notch and to enter the notch.
By doing so, the lock member can be inserted into the notch, and the rotation of the second arm can be more reliably regulated and locked.

Also, preferably
The first arm portion and the second arm portion are in contact with the rail while the rail is sandwiched between the first arm portion and the second arm portion, respectively, and the rail is vertically fed. Make sure that a rotating roller is installed.
By carrying out like this, the rail pinched with the rail catch can be suitably longitudinally fed.

Also, preferably
In a state where the rail is sandwiched between the first arm portion and the second arm portion, the roller is disposed in such a direction that the outer peripheral surface of the roller is in contact with the jaw portion of the rail.
If the rail catch makes the outer periphery of a pair of rollers contact the rail jaws and pinches the rail, even if there is a rail bond mark on the head side or abdomen side of the rail, the rail bond Since the traces do not hinder the vertical feed of the rail, the rail can be suitably fed vertically.
On the other hand, when the roller is provided so as to sandwich the abdomen of the rail as in the above-described prior art rail catch with a roller, the rail bond mark on the side of the abdomen of the rail hits the roller, and the vertical feed of the rail It is not preferable because it interferes.

Also, preferably
The outer peripheral surface of the roller is provided with a groove along the circumferential direction of the roller,
The rail jaws are configured to be guided into the groove in a state where the rail is sandwiched between the first arm and the second arm.
With the rail catch holding the rail between the first arm and the second arm, the jaw of the rail is guided into the groove of the roller, so that the groove fits between the pair of rollers. The vertical feed of the running rail can be performed smoothly.

  According to this invention, the rail catch which can clamp a rail more suitably is obtained.

It is a front view of the rail catch of this embodiment, and has shown the state where the rail was clamped. It is a front view of the rail catch of this embodiment, and has shown the state where the 2nd arm part was opened. It is a front view of the rail catch of this embodiment, and shows the process in which the 2nd arm part closes. It is a front view of the rail catch of this embodiment, and has shown the state where the lock member collided with the hitting part in the process in which the 2nd arm part closes. It is explanatory drawing about the locking member of the rail catch of this embodiment being bounced by the reaction which collided with the hit | projection protrusion part, and entering into the back of a notch.

  Hereinafter, an embodiment of a rail catch according to the present invention will be described in detail with reference to the drawings. However, the embodiments described below are given various technically preferable limitations for carrying out the present invention, but the scope of the present invention is not limited to the following embodiments and illustrated examples.

The rail catch 100 of this embodiment is provided with the 1st arm part 10 and the 2nd arm part 20 pivotally supported by the 1st arm part 10, for example, as shown in FIG. .
The first arm portion 10 and the second arm portion 20 are connected via a connecting shaft 1, and the second arm portion 20 rotates about the connecting shaft 1. The second arm portion 20 here has a size smaller than that of the first arm portion 10.
The rail R is sandwiched between the first arm portion 10 and the second arm portion 20 in a state where the second arm portion 20 is rotated in the direction in which the second arm portion 20 is lowered by its own weight.
In addition, the rail catch 100 is provided with a latching portion 2 for hooking a chain block hook, for example. The latching portion 2 is provided on the upper end side of the first arm portion 10.
Then, the rail R can be lifted by lifting the rail catch 100 holding the rail R with a chain block.

The 1st arm part 10 is a steel member, for example, and the roller 40 is rotatably arrange | positioned at the lower end side.
A portion of the first arm portion 10 that overlaps the second arm portion 20 is provided with a notch 11 that intersects the rotational direction of the second arm portion 20.
Further, the notch 11 is formed to have an inclination opposite to the inclination of the shoulder portion 12 of the first arm portion 10 above the notch 11. Specifically, the inclination of the shoulder 12 is an inclination that goes down to the outside of the first arm part 10 (in other words, an inclination that goes down from the connecting shaft 1), whereas the inclination of the notch 11 is the inclination of the first arm. The inclination is inward of the portion 10 (in other words, the inclination is downward in the direction approaching the connecting shaft 1).
Further, the notch 11 has a shape in which the inner edge on the lower side is longer than the inner edge on the upper side near the shoulder portion 12, and has a substantially “S” shape in front view (or a substantially J shape in front view). ing. A striking portion 11a with which a lock member 30 to be described later collides is provided at an opening portion of the notch 11, which is a part of the lower inner edge of the notch 11. That is, a part of the lower inner edge near the opening of the notch 11 functions as the striking portion 11a.

The second arm portion 20 is, for example, a steel member, and a roller 40 is rotatably disposed on the lower end side thereof.
The second arm portion 20 is provided with a long hole 21 that intersects the rotational direction of the second arm portion 20. The elongated hole 21 is provided in a portion overlapping the notch 11 of the first arm portion 10.
Further, the second arm portion 20 is provided with a lock member 30 in which the shaft portion 31 is inserted into the long hole 21.
The lock member 30 is, for example, a steel member, and is disposed so as to be movable along the long hole 21.
The lock member 30 is assembled to the second arm portion 20 so as to be movable along the elongated hole 21, and is used integrally with the second arm portion 20. That is, the lock member 30 is not used after being detached from the second arm portion 20.

The roller 40 is a member that contacts the rail R in a state where the rail R is sandwiched between the first arm portion 10 and the second arm portion 20.
In particular, the roller 40 is configured so that the outer peripheral surface of the roller 40 is in contact with the jaw portion of the rail R in a state where the rail R is sandwiched between the first arm portion 10 and the second arm portion 20. And the second arm portion 20.
Further, a groove portion 41 is provided on the outer peripheral surface of the roller 40 along the circumferential direction of the roller 40.
The roller 40 is configured to rotate in accordance with the longitudinal feed of the rail R held by the rail catch 100 (the first arm portion 10 and the second arm portion 20).
And since the jaw of the rail R is guide | induced in the groove part 41 of the roller 40 in the state which clamped the rail R by the 1st arm part 10 and the 2nd arm part 20 in the rail catch 100, a pair The vertical feed of the rail R fitted in the groove 41 between the rollers 40 can be smoothly performed.

  Next, the procedure for clamping the rail R with the rail catch 100 of this embodiment will be described.

First, as shown in FIG. 2, the second arm portion 20 is rotated in the pulling-up direction to open the second arm portion 20.
At this time, the operator moves the lock member 30 to the upper side of the long hole 21 with his / her finger, pulls out the lock member 30 from the notch 11 of the first arm portion 10, and then pulls up the second arm portion 20. Turn to.
The first arm portion 10 and the second arm portion 20 are respectively formed with small holes 10h and 20h for the operator to put fingers on, so that the rail catch 100 can be easily grasped.
Further, when the second arm portion 20 is rotated in the pulling-up direction, the lock member 30 abuts against the shoulder portion 12 of the first arm portion 10 or the roller mounting portion of the second arm portion 20 is brought into contact with the first arm portion 10. The second arm portion 20 is prevented from rotating more than necessary by hitting it.

Next, as shown in FIG. 3, the roller 40 of the first arm portion 10 is arranged in the vicinity of the jaw portion of the rail R, and the first arm portion 10 and the second arm portion 20 straddle the rail R, The person releases the second arm portion 20. The released second arm portion 20 rotates in a direction to be lowered by its own weight.
FIG. 3 shows an arrangement immediately before the lock member 30 reaches the notch 11 from the shoulder 12 of the first arm 10 in the process in which the second arm 20 rotates in the downward direction.

Next, as shown in FIG. 4, when the second arm portion 20 is further lowered and the lock member 30 reaches the notch 11 of the first arm portion 10, the lock member 30 collides with the striking portion 11 a of the notch 11.
The lock member 30 that has collided with the hitting portion 11 a is bounced by the colliding reaction and is guided so as to enter the depth of the notch 11.
Specifically, as shown in FIG. 5, in the process in which the second arm portion 20 rotates in the downward direction, the lock member 30 is moved from the connecting shaft 1 so as to be lowered along the shoulder portion 12 of the first arm portion 10. After descending in the direction of leaving, it is bounced in the direction approaching the connecting shaft 1 by the reaction that collided with the hitting projection 11 a and enters the depth of the notch 11.

As shown in FIG. 1, the notch 11 of the first arm portion 10 and the elongated hole 21 of the second arm portion 20 overlap with each other, and the lock member 30 moved to the lower end side of the elongated hole 21 becomes the notch 11. By entering the state, the rotation of the second arm portion 20 is regulated.
That is, at this time, the lock member 30 is in a state where the cutout 11 of the first arm portion 10 and the elongated hole 21 of the second arm portion 20 are communicated, and the lock member 30 is rotated by the second arm portion 20. Since it is in the state of entering the notch 11 that intersects the moving direction, even if the second arm portion 20 is simply rotated, the lock member 30 hits the inner edge of the notch 11 and its movement is restricted. Thus, the second arm portion 20 cannot be rotated.
Then, in a state where the rotation of the second arm portion 20 is restricted, the pair of rollers 40 of the rail catch 100 is in contact with the jaw portion of the rail R, and the rail catch 100 is sandwiched between the rail R. ing.
Thus, since the rail catch 100 is locked in a state where the rail R is sandwiched, if the rail catch 100 is lifted by a chain block or the like, the rail R sandwiched by the rail catch 100 can be lifted.

  When releasing the rail R held by the rail catch 100, as shown in FIG. 2, the operator brings the lock member 30 to the upper side of the long hole 21 with a finger, and moves the lock member 30 to the first position. The second arm portion 20 may be opened by rotating the second arm portion 20 in the direction in which it is pulled out from the notch 11 of the one arm portion 10.

As described above, in the rail catch 100 of the present embodiment, the second arm portion 20 is rotated in the direction in which the second arm portion 20 is lowered by its own weight from the state where the second arm portion 20 is pulled up with respect to the first arm portion 10. Thus, the lock member 30 can be fitted into the notch 11 and the rotation of the second arm portion 20 can be locked. Therefore, for example, the first arm portion aligned with the roller catch with a roller of the related art described above, It can be locked more easily than inserting a locking pin into the through hole of the second arm and locking the rotation.
And by locking rotation of the 2nd arm part 20 with respect to the 1st arm part 10, since the rail R can be clamped with the roller 40 of the 1st arm part 10, and the roller 40 of the 2nd arm part 20, it is possible. In the rail catch 100 of the present embodiment, the rail R can be clamped more easily than the conventional rail catch with a roller described above.

Moreover, since the locking member 30 of the rail catch 100 of this embodiment is assembled | attached to the 2nd arm part 20, and since it removes from the 2nd arm part 20 and is not used, it will not be lost.
That is, the trouble which loses a latch pin does not arise like the rail catch with a roller of the prior art mentioned above.

In addition, since the rail catch 100 has the pair of rollers 40 in contact with the jaws of the rail R in order to hold the rail R, the suspended rail R can be suitably fed vertically.
Specifically, as shown in FIG. 1, the rail catch 100 holds the rail R by bringing the outer peripheral surfaces (groove portions 41) of the pair of rollers 40 into contact with the jaws of the rail R. Even if there is a rail bond mark on the head side surface or the abdomen side surface of the rail R, the rail bond mark does not hinder the vertical feed of the rail R, so that the rail R can be suitably fed vertically.
On the other hand, when a roller is provided in an arrangement that sandwiches the abdomen of the rail as in the above-described rail catch with a roller (for example, FIG. 4 and FIG. 5 of Patent Document 1), Since the rail bond trace hits the roller and hinders the vertical feed of the rail R, the clamped rail R is once lowered and released, and the rail R is clamped and lifted at a place where there is no rail bond trace, and the rail R is fed vertically. The track maintenance work may be complicated, such as having to do it repeatedly.
That is, if it is the rail catch 100 of this embodiment, even the rail R with a rail bond trace can be clamped more suitably, and the rail R can be suitably longitudinally fed.

As described above, the rail catch 100 of the present embodiment fits the lock member 30 movably disposed along the long hole 21 of the second arm portion 20 into the notch 11 of the first arm portion 10, and The rail R can be clamped more suitably by locking the rotation of the arm portion 20.
Moreover, even if this rail catch 100 has the rail bond trace in the clamped rail R, the rail R can be suitably longitudinally fed.

In the above embodiment, the rail catch 100 (so-called roller catch) in which the roller 40 is disposed on the lower end side of the first arm portion 10 and the second arm portion 20 has been described as an example. However, the roller 40 is not disposed on the first arm portion 10 and the second arm portion 20, and the rail R is formed at the lower ends of the first arm portion 10 and the second arm portion 20. The rail catch 100 of the structure clamped may be sufficient. (For example, a rail catch having a configuration in which the roller 40 portion of the rail catch 100 of the present embodiment is not rotatable, that is, a clamping portion in which the rollers 40 disposed on the first arm portion 10 and the second arm portion 20 are not rotatable. The rail catch may be replaced with
Further, the direction of the roller 40 is not limited to the direction in which the outer peripheral surface of the roller 40 is in contact with the jaw portion of the rail R, and the portion where the roller 40 is in contact with the rail R may be another portion. .

  In addition, it is needless to say that other specific detailed structures can be appropriately changed.

DESCRIPTION OF SYMBOLS 1 Connecting shaft 2 Latching part 10 1st arm part 10h Small hole 11 Notch 11a Impacting part 12 Shoulder part 20 Second arm part 20h Small hole 21 Long hole 30 Locking member 31 Shaft part 40 Roller 41 Groove part 100 Rail catch R rail

Claims (5)

A first arm part, and a second arm part pivotally supported by the first arm part, wherein the first arm part is rotated in a direction in which the second arm part is lowered by its own weight. And a rail catch that holds the rail between the second arm part,
The first arm portion is provided with a notch that intersects the rotation direction of the second arm portion,
The second arm portion is provided with an elongated hole that intersects the rotation direction of the second arm portion, and a locking member that is movable along the elongated hole is disposed on the second arm portion. ,
The lock member which is rotated in the direction in which the second arm portion is lowered and the notch of the first arm portion and the elongated hole of the second arm portion overlap with each other and moves to the lower end side of the elongated hole is The rail catch configured to be configured such that the rotation of the second arm portion is restricted by entering the notch.   2. The rail catch according to claim 1, wherein the lock member is configured to be bounced by a reaction that collides with a striking portion provided in an opening portion of the notch and to enter the notch. .   The first arm portion and the second arm portion are in contact with the rail while the rail is sandwiched between the first arm portion and the second arm portion, respectively, and the rail is vertically fed. The rail catch according to claim 1 or 2, wherein a roller that rotates in a rotating manner is disposed.   The roller is disposed in a direction in which an outer peripheral surface of the roller is in contact with a jaw portion of the rail in a state where the rail is sandwiched between the first arm portion and the second arm portion. The rail catch according to claim 3. The outer peripheral surface of the roller is provided with a groove along the circumferential direction of the roller,
5. The structure according to claim 4, wherein the jaw portion of the rail is guided into the groove portion in a state where the rail is sandwiched between the first arm portion and the second arm portion. Rail catch.

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