JPS59157216A - Conveyor for heating pipe - Google Patents

Abstract

PURPOSE:To suppress uneven heating, curing and deforming by providing freely rotatably a chain provided with pipe supporting rollers on supporting rails, and engaging a roller revolving chain provided along the supporting rails and a chain wheel connected via a transmission mechanism to the pipe supporting rollers. CONSTITUTION:A conveyor device for heating pipes is juxtaposed freely cooperatively with plural units of pipe conveyors 6 in front of a heating furnace in a way that the end part of a steel pipe A passes the inside of the heating furnace. A conveyor chain 5 having pipe supporting rollers 14 is provided freely travelably and turnably on supporting rails 21, and a guide rail 22 is provided between the rails 21 in parallel therewith. A roller revolving chain 25 is mounted on the rail 22 and an interlocking mechanism 17 which interlocks with the rollers 14 is provided to the chain 5. The mechanism 17 is engaged with the chain 25.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveyor for carrying steel pipes, and more particularly to the structure of a conveyor for carrying steel pipes during heating.

Conventionally, a conveyor for conveying steel pipes through a heating furnace so as to allow hot working has been provided with a plurality of skid rails 2 in parallel in front of the heating furnace 1, and a conveyor with a push piece attached to each of the skid rails 2 is installed in parallel in front of the heating furnace 1. A conveyor 3 is provided, and the conveyor 5 is interlocked via a common drive shaft 4, and the steel stA placed astride the plurality of skid rails 2 is arranged so that one of them passes through the inside of the heating furnace 1. The conveyor 3
When the pipe end of the steel pipe A that is sent to the conveyor 6 passes through the heating furnace 1 and comes out, it is heated
) It softens and can be plastically deformed.

However, with this device, the rotation of the steel pipe A rolling on the skid rail 2 is small or uneven.
There were drawbacks such as the steel pipe A was not heated uniformly over its entire circumference and the heated end of the pipe was deformed and curved due to its own weight.

SUMMARY OF THE INVENTION In view of the above drawbacks, it is an object of the present invention to provide a steel pipe conveying device for a heating furnace that can uniformly heat the V-end of a steel pipe over its entire circumference and suppress the bending of the pipe due to its own weight.

The main point of this invention is that a steel pipe support roller 14 is rotatably provided on a conveyor chain 5 running on a support rail 21, and a steel pipe support roller 214 is provided along the support rail 21.
A transmission mechanism 17 is provided to rotate the steel pipe being transported at a predetermined circumferential speed or higher via the steel pipe support rollers 14 on the support rail 21, thereby heating it up and suppressing bending deformation due to its own weight. .

The structure of this invention will be explained with reference to figures of embodiments.

3 to 5 show a conveyor chain 5 for conveying steel pipes.

FIG. 6 shows a steel pipe conveyor 6 installed parallel to the front of the heating furnace. In Figure 3.4, conveyor chain 5
A pair of guide rollers 8 are rotatably attached to both ends of the connecting pin 7, - a pair of outer link plates 9 are firmly fitted inside the twin guide rollers 8, and - A bush (not shown) 75 is rotatably fitted inside, and a pair of inner link plates 10 are firmly fitted to both ends of this bush. - The twin chain rollers 11, the intermediate transmission chain wheel 12, and the intermediate gear 16 are fitted onto the outer periphery of the bush between the twin inner link plates 100, and the intermediate transmission chain wheel 12 and the intermediate gear 13 are integrally formed. The chain roller 11 is connected to a pair of chain rollers 11 and is interposed between the pair of chain rollers 11. - A pair of steel pipe support rollers 14 are arranged parallel to the connecting pin 7 so as to face the twin chain rollers 11, and a driven gear 15 is arranged between each of the steel pipe support rollers 14 and concentrically therebetween; A support pin 16 is rotatably passed through the center of the steel pipe support roller 14 and the driven gear 15. The support pin 16 is parallel to the connecting pin 7, and is fixed to the inner link grate 10 with an interval such that the intermediate gear 13 and the driven gear 15 mesh with each other. In the transmission mechanism 17, the number of teeth of the intermediate gear 13 is larger than that of the driven gear 15, the diameter of the intermediate gear 16 is set larger than that of the intermediate chain wheel 12, and the diameter of the steel pipe support roller 14 is set larger than that of the driven gear 15. do.

In Figures 4 to 6, frame 1 of steel pipe conveyor O
8 is straddled over mounts 19 placed at both ends thereof. Each mount 1
A main chain wheel 20 around which the conveyor chain 5 is wound is rotatably provided on the main chain wheel 9, and the conveyor chain 5 connected endlessly between the main chain wheels 200 is rotatably tensioned. The main chain wheel 2o is provided with a clearance E for the intermediate chain wheel 12 and the intermediate gear 16 in the middle of its tooth width W.

On the frame 18, a support rail 21 which is tensioned between the main chain wheel 2o and abuts against the guide roller 8 along the constant conveyor chain 5, and an intermediate chain wheel 12 ((a guide rail 22 facing oppositely provided) are provided. One side of the guide rail 22 is fixed inside the guide ring 23 of the control chain wheel 20, and the control chain wheel 24 facing the opposite end of the guide rail 22 is inserted into the frame 18. The guide link 25 and the control chain wheel 2 are installed and placed on the kite rail 22.
This roller rotating chain 2 is equipped with 25 pieces of roller rotating chains made of roller chains for Buddhist paintings that are wrapped around the roller chains 2 and 4.
5 is engaged with the intermediate chain wheel 12.

A common conveyor chain near one pedestal 19 of steel pipe transport conveyor B installed in parallel, drive! ! Iil 26 is provided, and this drive Ii'1lI26 and the main chain wheel 20 are interlockably connected via a transmission device 27. A common drive shaft 28 of the roller rotation chain 25 is provided near the pedestal 19 located opposite to the above, and the drive shaft 28 and the control chain wheel 24 are coupled via a transmission device 29 so as to be freely interlocked.

The operation of the above configuration will be explained next.

The main chain wheel 2 is operated by the driving PJvJ shaft 28 and the transmission device 26.
When 0 is rotated in the direction of B in the figure, the chain 5 becomes
When the guide roller 8 is brought into contact with the support rail 21 and rotated in the B direction, the intermediate chain wheel 12 for I-rotate is rotated by the roller rotation chain 25. The intermediate transmission chain wheel 12 rotated by the roller rotation chain 25 is made to have a peripheral speed higher than that of the steel pipe supported 0-'5p iJ f guide roller 8 via the transmission mechanism 17. The steel pipe support rollers 14 orally transport the steel pipe A at a higher circumferential speed than when the steel pipe A is transported on the skid rail.

The control chain wheel 24 rotates the lawn rotating chain 25 on the guide rail 22 in the direction opposite to the arrow B by means of a drive shaft 28 and a transmission device 29, and operates as an intermediate transmission chain wheel even when the conveyor chain 5 is stopped. 12 and rotates the steel pipe support row 214 via the transmission mechanism 17, so that the conveyor chain 5 can be freely stopped even while the steel pipe is being heated in the furnace. Furthermore, since the conveyance speed of the conveyor chain 5 is kept constant, the circumferential speed of the steel pipe A can be adjusted arbitrarily.

The same result can be obtained even if the meshing relationship between the transmission intermediate chain wheel 12 and the roller rotating chain 25 is configured to mesh with a worm gear.

As explained above, the present invention provides a rotatable chain with tube support rollers on a support rail, and a roller rotation chain provided along the support rail is connected to the tube support roller via a transmission mechanism. By engaging the chain wheel, the tube support roller can be rotated by the roller rotation chain, and the rotation of the copper tube on the tube support roller can be freely controlled, so the rotation of the steel tube can be controlled at a predetermined speed and uniformly controlled. It was possible to suppress heating and bending due to its own weight.

[Brief explanation of drawings]

Fig. 1 is a plan view of a conventional steel pipe heating device, Fig. 2 is a side view of Fig. 1, Fig. 3 is a conveyor chain of the embodiment of the present application, Fig. 4 is a sectional view of Fig. 6, and Fig. 5 is a FIG. 6 is a diagram showing the relationship between the chain and the chain wheel, and is a diagram of the conveyor. 5: Conveyor chain, 14: Pipe support roller, 17: Transmission mechanism, 21: Support rail, 22: Guide rail 1;
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Claims (1)

[Claims] In a conveyor system in which several tube transport conveyors are arranged in parallel in front of the heating furnace so that the ends of the steel tubes pass through the heating furnace, the conveyor chain with tube support rollers can run freely on the support rail. A guide rail is provided between the support rails in parallel with the kite rail, a roller rotation chain is mounted on the kite rail, and an interlocking mechanism is provided on the conveyor chain to interlock with the tube support roller. A conveyor for heating tubes, characterized in that an interlocking mechanism is engaged with a roller rotation chain.