JP2006182528A - Installation for carrying steel pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve reduction of labor and improvement of safety by automating the movement of a steel pipe in a refining line. <P>SOLUTION: Between two roller conveyers 5a, 5b parallel to each other, there are arranged tilting skids 1a-1c in which one ends thereof can be elevated, temporary stoppers 2, 2a, 2b which are located at end positions of the tilting skids on non-elevation sides, and back-carrying preventing stoppers 3a-3c which are located at the positions on elevation sides, in addition to a fixed skid 7, a kick-out device 6 and one pipe feeder 8 in conventional use. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a steel pipe transfer facility in a finishing line of a steel pipe manufacturing factory.

  A steel pipe manufacturing factory such as a medium diameter pipe or a spiral pipe is usually provided with a work line called a finishing line. In this finishing line, various operations such as water pressure testing, re-cutting to a standard length, chamfering of cut surfaces, non-destructive inspection, printing, oiling, etc. are performed on steel pipes once manufactured. However, since the types of work required for each lot of steel pipes are different and the required time and timing vary, it is impossible to process with a consistent flow work as before, so a predetermined space is required. The steel pipe corresponding to is retained and sent out to the corresponding equipment as necessary.

  An example of the layout of a conventional general adjustment line will be described with reference to the drawings. FIG. 8 is a plan view showing a part of the finishing line, 5a is a first roller conveyor, 5b is a second roller conveyor parallel thereto, 7a, 7b and 7c are in the middle of both roller conveyors. Is a horizontal fixed skid that is divided into three in the longitudinal direction, 6 is a kicking device for kicking a steel pipe from the first roller conveyor onto the fixed skid 7a, and 8 is a second roller conveyor from the fixed skid 7c. This is a single feeding device for feeding steel pipes one by one.

FIG. 9 is a front view showing the kicking-out device 6, wherein 61 is a kicking arm, and 62 is a kicking cylinder. The kicking arm 61 stands by at a position lower than the roller conveyor 5a. However, the kicking arm 61 is lifted by the operation of the kicking cylinder 62 and rolls and transfers the steel pipe P onto the fixed skid 7a.
FIG. 10 is a front view showing the single feed device 8, wherein 81 is a rotating arm and 82 is a rotating cylinder. The rotating arm 81 is V-shaped, and one arm serves as a stopper that suppresses the movement of the steel pipe P on the fixed skid 7b in the illustrated standby state. The steel pipe P is kicked out and moved onto the fixed skid 7c.

  In FIG. 8, the staying steel pipe is placed on the fixed skid 7b. In principle, the first roller conveyor 5a is the receiving conveyor, the second roller conveyor 5b is the delivery conveyor, and the steel pipe is directed to the fixed skids 7a to 7c. However, since the upper surface of each of the fixed skids 7a to 7c is horizontal, it is necessary that the operator rolls and conveys it manually in both directions. It has become. For this reason, the work load is large, and it is not preferable for safety because of the muscle work.

  The finishing line transport equipment is designed to be transportable in both directions, but in reality there are very few things that have to be transported backwards, and most of them are transported in the same direction. It is an object of the present invention to minimize the conveyance by human power as much as possible by improving the equipment and to automate it.

  The present invention provides a fixed skid that is provided between two parallel roller conveyors in a steel pipe finishing line and places a steel pipe to be retained on the upper surface, and a kick-out that kicks the steel pipe from the first roller conveyor onto the fixed skid. And a steel pipe transport facility having a single feeding device for feeding a steel pipe from above a fixed skid to a second roller conveyor, provided at a right angle to the roller conveyor, with the other end of the second roller conveyor side as a fulcrum A tilting skid that can be raised, a temporary stopper that is provided at a position of one end of the tilting skid on the second roller conveyor side, and a position of one end of the tilting skid on the first roller conveyor side. The steel pipe that is provided to be able to undulate and moves from the first roller conveyor toward the second roller conveyor falls down and moves in the opposite direction. A steel pipe transfer facility characterized in that the steel pipe is provided with a reverse feed prevention stopper that stands up and blocks this and a plurality of material sensors that detect the presence or absence of the steel pipe on the tilting skid, Desirably, the steel pipe transporting equipment wherein the tilting skid is divided into a plurality of pieces that wrap in the transporting direction.

  According to the present invention, it is possible to automatically convey a steel pipe between two parallel roller conveyors without manual operation in one direction, and in the opposite direction, it is possible by conventional work, and labor It has the excellent effect of reducing safety and improving safety.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a part of a finishing line, FIG. 2 is a plan view corresponding to FIG. 8, and the reference numerals 1a to 1c are tilt skids, and 2a and 2b are those described above. Temporary stoppers, 3a to 3c are reverse feed preventing stoppers, and P is a steel pipe. Although not shown in FIG. 1, there are actually the same fixed skids 7a to 7c as shown in FIG. 2, and these support the load of the steel pipe P that is staying.

  The tilting skids 1a to 1c are provided at right angles to the roller conveyors 5a and 5b, and the other end can be raised with one end on the second roller conveyor 5b side as a fulcrum. The temporary stoppers 2a and 2b are provided to be tiltable at the position of one end of the tilting skids 1a and 1b on the second roller conveyor 5b side. The reverse feed prevention stoppers 3a to 3c are provided at the position of one end of the tilting skids 1a to 1c on the first roller conveyor 5a side so as to be raised and lowered, and are directed from the first roller conveyor 5a to the second roller conveyor 5b. The steel pipe falls down against the moving steel pipe, and stands up to the steel pipe that tries to move in the opposite direction. In addition, although not particularly illustrated, a plurality of material sensors for detecting the presence or absence of a steel pipe on the tilting skid are provided at necessary places. Material sensors include arrival sensors that detect the arrival of steel pipes, and full sensors that detect whether the steel pipe is full on the tilting skid. Figures 1 and 2 show specific examples of specific installation locations. However, for example, the arrival sensor is installed at the tip position of the tilting skid, and the full sensor is installed at the end position.

  FIG. 3 is a front view showing one tilting skid 1, 11 is a beam, 12 is a tilting pin serving as a tilting fulcrum, and 13 is a tilting cylinder. When the tilt cylinder 13 is extended, the beam 11 is lifted on the right side of the figure as shown by the imaginary line, and the steel pipe P placed on the fixed skid 7 moves in the left direction. When the tilting cylinder 13 contracts, the beam 11 returns to the horizontal, but its height is designed to be slightly lower than that of the fixed skid 7, so that the weight of the mounted steel pipe is supported by the fixed skid 7. The

  A temporary stopper 2 which will be described later is provided at the position of one end of the tilting skid 1 on the second roller conveyor 5b side, that is, near the tilting pin 12 in FIG. 3, and if this stands up, the steel pipe P Can not move to the left, the steel pipe that hits the head is accumulated at the head, and the steel pipe that arrives next is accumulated on the fixed skid 7 in a front-aligned manner. On the other hand, on the right side of FIG. 3, the position of one end of the tilting skid 1 on the first roller conveyor 5a side, that is, the position near the tilting cylinder, is provided with a reverse feed prevention stopper 3 that will be described later. The steel pipe P arrives by defeating it from left to right, but even if the steel pipe rolls out with some force, it cannot go over to the right. The temporary stopper 2 and the reverse feed prevention stopper 3 need only be at the above-mentioned positions at a distance from the roller conveyor, and therefore do not necessarily have to be directly attached to the fixed skid 7 or the tilting skid 1.

  4 and 5 are partial front views of the adjusting line showing the vicinity of the temporary stopper 2, 21 is a raising / lowering arm, and 22 is a raising / lowering cylinder. Normally, as shown in FIG. 4, the raising / lowering arm 21 stands to serve as a stopper to prevent the steel pipe P from moving. By operating the raising / lowering cylinder 22, the raising / lowering arm 21 sinks below the fixed skid 7 as shown in FIG. 5, and the steel pipe P can pass therethrough. This operation is performed in conjunction with the tilting of the tilting skid 1 in principle when the steel pipe P is moved.

  Next, the operation of the reverse feed prevention stopper 3 will be described with reference to the drawings. FIG. 6 is a front view of a finishing line showing the vicinity of the reverse feed prevention stopper 3, wherein 31 is a head, 32 is a counterweight, 33 is a rotation pin, and 34 is a rotation stopper. (A) is a case where the steel pipe P rolls on the fixed skid 7 from the right side with respect to the reverse feed prevention stopper 3 as indicated by an arrow a, and (b) is a roll from the left side as indicated by an arrow c. Is the case. As shown in this figure, the counter feed stopper 3 has a counterweight 32 which is eccentrically arranged eccentrically with respect to the rotation pin 33 which is the center of rotation, and has a moment to rotate clockwise in this figure. However, since the weight of the counterweight 32 is sufficiently smaller than that of the steel pipe P, when the steel pipe P rolls from the right side as shown in (a), it overcomes this moment and reverses counterclockwise as shown by the arrow b. The feed prevention stopper 3 can be tilted to pass over this, and after passing, the reverse feed prevention stopper 3 returns to its original posture by the moment, but when it rolls from the left side as shown in (b) Since the rotation is restricted by the lower rotation stopper 34, the steel pipe P is not overturned and cannot be rolled to the right beyond this. By appropriately selecting the head angle, the amount of eccentricity of the counterweight 32, etc., the above behavior can be realized without necessarily having the rotation stopper 34.

  By the tilting skid 1 and the reverse feed prevention stopper 3 described above, the steel pipe P is fed to the left without any manual intervention, and the temporary stopper 2 stays at the front. The presence or absence of a steel pipe on the fixed skid 7 and whether or not the skid is full are detected by a material sensor installed at various places although not shown. Therefore, when the conventional kicking device 6 and single feed device 8 are combined with these, automatic conveyance of the steel pipe P from the first roller conveyor 5a to the second roller conveyor 5b is realized.

  By the way, as described above, the refining line needs to be transported in the reverse direction although the frequency is low. Since both the tilting skid 1 and the reverse feed prevention stopper 3 are arbitrarily operated by the cylinder, if the posture is such that they do not act, reverse feed can be performed by human power as in the past, but only the reverse feed prevention stopper 3 has been used so far. In the explanation, it becomes an obstacle to reverse feeding. Therefore, it is desirable to add an opening mechanism to the reverse feed prevention stopper 3. This will be described with reference to FIG. In FIG. 7, 35 is an open cylinder, and 36 is a blade for receiving it. When the reverse feed is required, when the blade 36 protruding to the side by the open cylinder 35 is pushed up, the reverse feed prevention stopper 3 falls in the direction of the arrow d as shown in FIG. Hidden in, will not hinder reverse transport.

  In addition, although the example in which the tilting skid is divided in the transport direction has been described, it goes without saying that it may not be divided depending on the scale of the line.

It is a perspective view which shows a part of adjustment line of the Example of this invention. It is a top view which shows a part of adjustment line of the Example of this invention. It is a front view which shows the tilting skid of an Example. It is a partial front view of the adjustment line which shows the temporary stopper vicinity of an Example. It is the partial front view of the adjustment line which shows the temporary stopper vicinity of an Example similarly. It is a partial front view of the adjustment line which shows the reverse feed prevention stopper vicinity of an Example. It is the partial front view of the adjustment line which shows the back-feeding prevention stopper vicinity of an Example similarly. It is a top view which shows a part of adjustment line in a prior art. It is a front view of the kicking-out apparatus in a prior art. It is a front view of the single feeder in the prior art.

Explanation of symbols

1, 1a-1c Tilt skid 2, 2a, 2b Temporary stopper 3, 3a-3c Reverse feed prevention stopper 5, 5a, 5b Roller conveyor 6 Kick-out device 7, 7a-7c Fixed skid 8 Single feed device
11 beam
12 Tilt pin
13 Tilt cylinder
21 Standing arm
22 Vertical cylinder
31 head
32 counterweight
33 Rotating pin
34 Rotation stopper
35 Open cylinder
36 wings
61 Kicking arm
62 Kicking cylinder
81 Rotating arm
82 Rotating cylinder

Claims (2)

  A fixed skid (7, 7a-7c) which is provided between two parallel roller conveyors (5a, 5b) in the steel pipe finishing line and places the steel pipe (P) to be retained on the upper surface, and the first roller conveyor The kicking device (6) for kicking the steel pipe (P) onto the fixed skid (7, 7a-7c) from (5a) and the second roller conveyor (5b) from above the fixed skid (7, 7a-7c) In a steel pipe transport facility having a single feed device (8) for feeding a steel pipe, it is provided at a right angle to the roller conveyor (5a, 5b), and the other end rises with one end on the second roller conveyor (5b) side as a fulcrum The tilting skid (1, 1a to 1c) made possible, and a temporary stopper (2) provided at the position of one end on the second roller conveyor (5b) side of the tilting skid (1, 1a to 1c) (2 , 2a, 2b) and also the first row of the tilting skid (1, 1a-1c) The steel pipe (P) that is provided at the position of one end on the conveyor (5a) side so that it can be raised and lowered and moves from the first roller conveyor (5a) toward the second roller conveyor (5b) is tilted and reversed The steel pipe (P) to be moved to the position of the steel pipe (P) on the tilting skid (1, 1a to 1c) and the reverse feed prevention stopper (3, 3a to 3d) that stands up and blocks this A steel pipe transfer facility comprising a plurality of material sensors for detection.   The steel pipe transfer facility according to claim 1, wherein the tilting skid (1, 1a to 1c) is divided into a plurality of pieces that wrap in the transfer direction.