JP5723820B2 - Long rail conveying device and conveying method - Google Patents

Description

The present invention relates to a long rail conveying device and a conveying method for conveying a long rail along a curved route.

If there are joints on the rails on which the trains run, a special method must be applied to the joints. For example, as described in Patent Document 1, a long rail with a length of 80 to 250 m is manufactured. Has been.
In addition, as shown in Patent Document 2, when a long strip or the like is transported, it is also proposed to use a grooved roll, insert the strip into the groove, and press and transport the strip with a pressing member from above. Yes.

JP 2011-73063 A JP 2001-170815 A

In Patent Document 1, there is a description about conveying a long rail with a very large bending amount, but there is no description about a specific method and apparatus.
Moreover, the object of Patent Document 2 is a round bar and not a long rail. Furthermore, if the steel bar is a long rail and is fitted into the groove and conveyed, the tip of the long rail (same for round steel) collides with the groove of the next roll, so the pitch of the grooved roll needs to be reduced. And the equipment is expensive and not suitable for actual production.

The present inventor also considered carrying a long rail on a horizontal roll and sandwiching both sides between saddle rolls (hereinafter referred to as carrying only by a table roll). Therefore, it is necessary to make the bend radius extremely large or shorten the pitch of the heel roll, the equipment itself becomes expensive, and further, the tip of the long rail is deformed.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and can be manufactured at a relatively low cost, and can transport a long rail without hindrance even if the route is bent to some extent. The purpose is to provide.

The long rail conveying device according to the first aspect of the present invention includes driving wheels that are rotationally driven by a power source, and travels on a pair of rails arranged along a preset route. Cart,
A clamp mechanism mounted on the carriage and gripping the tip of the long rail to be conveyed;
Between the pair of rails, a plurality of hook guide means for horizontally guiding the long rail and a plurality of horizontal guide means for placing the long rail have gaps in the length direction of the rail. Is provided.

Here, in the long rail conveying device according to the first aspect of the invention, the clamp mechanism holds the head of the long rail and floats the tip of the long rail with respect to the horizontal guide means. Is preferred.

In the long rail conveyance device according to the first aspect of the present invention, it is preferable that the hook guide means has a shape that covers the bottom (leg) of the long rail with a gap.

And the conveyance method of the long rail which concerns on 2nd invention is equipped with the drive wheel rotated by the power source, and it is a cart which runs on the pair of rails arranged along the preset route. A clamp mechanism for gripping the tip of the long rail is provided. The clamp mechanism is disposed inside the pair of rails with a gap in the length direction of the rail, and guides the long rail in the lateral direction. It comprises scissors guide means and horizontal guide means for placing the long rail, and transports the long rail while guiding both sides of the long rail with the scissors guide means.

And in the conveyance method of the long rail which concerns on 2nd invention, it is preferable that the said route bends and the said long rail is bent within an elastic range, and is conveyed.

Since the apparatus and method for transporting a long rail according to the present invention are configured as described above, in the case of transporting a long rail using only a table roll, the end of the long rail is horizontal depending on the saddle roll and in some cases. While colliding with the rolls and interference with these table rolls is a great resistance to the conveyance of the long rail, in the present invention, the end of the long rail is clamped and held at the center of the pair of rails. Therefore, the long rail can be smoothly conveyed without colliding with the table roll.

Further, when the front end (ie, the tip) of the long rail is lifted with respect to the horizontal guide means by the clamp mechanism (gripping means), the front end of the long rail is lowered by its own weight and collides with the horizontal guide means. It flows smoothly without.

And since the conveying apparatus cover and conveying method of the long rail which concern on this invention pull the front-end | tip of a long rail and convey a long rail, it is not necessary to drive a coffin guide means or a horizontal guide means.
In addition, since there is no collision between the end of the long rail and the horizontal guide means and the scissors guide means, wrinkles and the like during transport of the long rail are reduced.

It is sectional drawing of the conveying apparatus of the elongate rail which concerns on one embodiment of this invention. It is sectional drawing of another site | part of the elongate rail conveying apparatus which concerns on one embodiment of this invention. It is a top view of the conveyance apparatus of the long rail which concerns on one embodiment of this invention. It is a sectional side view of the elongate rail conveying apparatus which concerns on one embodiment of this invention. It is explanatory drawing of the scissors roll used for the conveying apparatus of the long rail which concerns on other embodiment of this invention.

Next, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in FIGS. 1 to 4, the long rail conveyance device 10 according to an embodiment of the present invention includes a pair of rails 12 and 13 arranged in advance along the conveyance route of the long rail 11. It has a cart 14 that is rectangular in plan view when traveling. In addition, the rails 12 and 13 are firmly fixed to the base 12a by the fixing bracket 13a.

As shown in FIGS. 1, 2, and 3, the carriage 14 is larger than the width of the rails 12 and 13 and has a pair of driven wheels 16 and 17 and a pair of driving wheels 18 and 19. The first drive motor (an example of a drive source) 20 and 21 is connected via brake mechanisms 20a and 21a, bevel gear boxes (or reducers) 20b and 21b, pulleys 22 to 25, and belts 26 and 27, respectively. Has been. As a result, the drive wheels 18 and 19 are driven to rotate independently, so that the carriage 14 can run without any trouble even if it travels on the curved rails 12 and 13.

As shown in FIGS. 1 and 4, a clamp mechanism 29 that grips the tip of the long rail 11 is provided at the upper center position of the carriage 14, specifically, the driven wheels 16 and 17 that are front wheels. The clamp mechanism 29 includes bearings 33 and 34 provided on the left and right auxiliary mounts 31 and 32, and a screw in which a left screw 35 is formed on the left half and a right screw 36 is formed on the right half supported by the bearings 33 and 34. A clamp having a shaft 37, a second drive motor 39 with a built-in brake attached to one side of the screw shaft 37 via a bevel gear box 38, and nut portions 40 and 41 screwed into the left screw 35 and the right screw 36, respectively. Members 42 and 43 are provided. The left screw 35 and the right screw 36 may be interchanged.

The clamp members 42 and 43 are provided with clamps 45 and 46 that are in direct contact with the head 11a of the long rail 11 from the left and right sides. Note that guide rods 47 and 48 that prevent the clamp members 42 and 43 from rotating together are provided on both sides in the front-rear direction of the clamp members 42 and 43. Further, the nut portions 40 and 41 abut against the clamp members 42 and 43 via the compression springs 49 and 50 so that the clamp members 42 and 43 elastically abut on the head 11 a of the long rail 11. . The compression springs 49 and 50 can be replaced with other elastic members. In addition, a tachometer (rotary encoder) 52 is provided at one end of the screw shaft 37 so that the rotation angle of the screw shaft 37 can be measured. The tachometer 52 can be omitted.

At the center of the pair of rails 12 and 13 on the base 12a, a horizontal roll 55, which is an example of horizontal guide means, via a first support member 54 is freely rotated at a pitch of 2 to 6 m, for example. , 13 with a gap in the longitudinal direction, and the bottom of the long rail 11 excluding the tip is mounted. 1 and 2 show only the right half of the horizontal roll 55, and it has a bearing 57 that is fixed to the support shaft 56 inside.

Further, at the center of the pair of rails 12 and 13 on the base 2a, there is a gap at a pitch of about 5 to 12 m in the longitudinal direction of the rails 12 and 13, and a position different from the first support member 54. The second support member 59 disposed on the left side is provided with a reed roll 60 that is an example of a reed guide unit that is paired on the left and right. The scissors roll 60 is rotatably provided on a vertical shaft 61 fixed to the second support member 59 via a bearing 62.

The long rail 11 is disposed with a gap between the pair of scissors rolls 60 disposed at the center of the pair of rails 12 and 13, and the long rail 11 except for the tip, Place on the horizontal roll 55.

The scissors roll 60 has a disc portion 63 that contacts the abdomen of the long rail 11 at the top, and a reduced diameter portion 64 that is formed continuously below the disc portion and covers the bottom of the long rail 11. Are integrally formed to form a mushroom-shaped cocoon roll 60 arranged with a gap from the bottom (the surface) of the long rail 11. Therefore, the bottom portion of the long rail 11 is inserted between the opposing mushroom-shaped scissors rolls 60 with a normal gap. Thereby, the long rail 11 is guided in the lateral direction by the pair of scissors rolls 60. In this embodiment, the heel roll 60 includes the disc portion 63, but the disc portion 63 is not an essential requirement for the heel roll.

Therefore, when using this long rail conveyance device 10, a linear region is provided at the conveyance start point of the long rail 11, and the bottom of the long rail 11 is opposed to the bottom of the long rail 11. While inserting between the rolls 60, the bottom of the long rail 11 is placed on the horizontal roll 55.

In this state, the front side of the long rail 11 is slightly lifted by a horizontal roll 55 provided with lifting means, and the clamps 45 and 46 of the clamp members 42 and 43 are brought into contact with both sides of the head 11a of the long rail 11. . In this case, the second drive motor 39 is rotated to rotate the screw shaft 37 having the left screw 35 and the right screw 36. The screw shaft 37 is rotated by the second drive motor 39 so as to exert a sufficient force, and the brake of the second drive motor 39 is operated to clamp the clamped state of the head 11a of the long rail 11 Maintain with mechanism 29. Thereby, it can convey in the state which floated the front-end | tip of the elongate rail 11 with respect to the horizontal roll 55, and it can prevent the front side of the elongate rail 11 from colliding with the horizontal roll 55. FIG.

Next, the brake mechanisms 20a and 21a are released, the first drive motors 20 and 21 are operated, the drive wheels 18 and 19 are rotated, the carriage 14 is advanced, and the front side head of the long rail 11 is moved. While clamped by the clamp mechanism 29, the bottom of the long rail 11 other than the front side is placed on the horizontal roll 55, and the abdomen and both sides of the long rail 11 are guided by the scissors roll 60 while being long. The rail 11 is conveyed. In this case, since the separate drive motors 20 and 21 are provided for the left and right drive wheels 18 and 19, even if there is a difference in the rotation speed of the left and right drive wheels 18 and 19 at the curve point, the rotation number is automatically adjusted. It can be controlled and bend smoothly.

In this case, at the curve positions of the rails 12 and 13 forming a part of the transport route, the long rail 11 is bent in a curved shape by the scissors roll 60 arranged at a predetermined interval, but within the elastic limit of the long rail 11. If there is, the straight line will be restored if the left and right restraints are solved. It should be noted that the rails 12 and 13 can be curved to such an extent that the rail is subjected to stress that is, for example, 2/3 (preferably half) or less of the maximum stress of the elastic limit.

Subsequently, the scissors guide means of the long rail conveyance device according to another embodiment of the present invention will be described with reference to FIG. Reed rolls 70 and 70a, which are examples of reed guide means, are provided with gaps on both sides of the bottom 11e of the long rail 11c. Under the long rail 11c, horizontal rolls 74, which are an example of horizontal guide means, are arranged at predetermined intervals. The horizontal roll 74 is rotatably disposed on a support shaft 75 fixed on the first support member 76 via bearings 77 and 77a.

Also, the pair of left and right reed rolls 70 and 70a are freely rotatable via a bearing on a vertical shaft 73 disposed on a second support member 78 disposed at a position different from that of the first support member 76. Is provided. As a result, one of the bottom portions 11e of the long rail 11c is guided by the scissors rolls 70 and 70a and moves in a predetermined position. Other configurations are the same as those of the long rail conveying device 10 described above. In addition, 11f shows the long rail larger than the long rail 11c, and 11g shows the bottom part, but also in this long rail 11f, it can be conveyed smoothly through a saddle guide means and a horizontal guide means.
In FIG. 3, reference numerals 65 and 66 denote control panels.

The present invention is not limited to the above-described embodiment, and the configuration thereof can be changed without changing the gist of the present invention.
In the above embodiment, only the rear wheels are drive wheels, but all the wheels can be drive wheels. Moreover, since it is difficult to take out when the long rail is always sandwiched between the left and right reed rolls, the reed roll at a specific place can be moved laterally.

10: Long rail transport device 11, 11c, 11f: Long rail, 11a: Head, 11e, 11g: Bottom, 12, 13: Rail, 12a: Base, 13a: Fixing bracket, 14: Cart 16, 17: driven wheel, 18, 19: drive wheel, 20, 21: drive motor, 20a, 21a: brake mechanism, 20b, 21b: bevel gear box, 22-25: pulley, 26, 27: belt, 29: clamp Mechanism, 31, 32: Auxiliary mount, 33, 34: Bearing, 35: Left-hand thread, 36: Right-hand thread, 37: Screw shaft, 38: Bevel gear box, 39: Second drive motor, 40, 41: Nut portion, 42, 43: Clamp member, 45, 46: Clamp, 47, 48: Guide rod, 49, 50: Compression spring, 52: Tachometer, 54: First support member, 55: Horizontal roll, 56: Holding shaft, 57: bearing, 59: second support member, 60: saddle roll, 61: vertical shaft, 62: bearing, 63: disk portion, 64: reduced diameter portion, 65, 66: control panel, 70, 70a: 竪 roll, 73: vertical shaft, 74: horizontal roll, 75: support shaft, 76: first support member, 77, 77a: bearing, 78: second support member

Claims (5)

A dolly having drive wheels that are rotationally driven by a power source, and traveling on a pair of rails arranged along a preset route;
A clamp mechanism mounted on the carriage and gripping the tip of the long rail to be conveyed;
Between the pair of rails, a plurality of hook guide means for horizontally guiding the long rail and a plurality of horizontal guide means for placing the long rail have gaps in the length direction of the rail. It is provided as a long rail conveying device. 2. The apparatus for transporting a long rail according to claim 1, wherein the clamp mechanism grips a head of the long rail and transports the tip of the long rail while floating with respect to the horizontal guide means. A long rail conveying device. 3. The long rail conveyance device according to claim 1, wherein the eaves guide means has a structure that covers a bottom portion of the long rail with a gap. Provided with a clamp mechanism for gripping the tip of a long rail on a cart that includes a drive wheel that is rotationally driven by a power source, and that runs on a pair of rails arranged along a preset route, Inside the pair of rails, there are gap guides arranged in the longitudinal direction of the rails, respectively, and guide means for guiding the long rails in the lateral direction, and horizontal guide means for placing the long rails A method for transporting a long rail, comprising transporting the long rail while guiding both sides of the long rail with the hook guide means. 5. The method for transporting a long rail according to claim 4, wherein the route is bent, and the long rail is bent and transported within an elastic range.

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