RU2218529C2 - Device for delivery and transportation of cylindrical rolled stock through heating furnace - Google Patents

Abstract

FIELD: metallurgical equipment. SUBSTANCE: proposed device has feed table and wheeled table which switches on wheels mounted on frame and located between furnace sections. Device is provided with drive shafts fitted with biconical rollers and located between wheels of wheeled table. Shafts with biconical rollers are secured on swivel frames. One end of each swivel frame is articulated on strut and second end is connected with hydraulic drive through leverage; swivel frame is located beyond heating furnace. Shafts with biconical rollers are provided with seals secured on furnace sections. EFFECT: enhanced efficiency and reliability. 7 dwg

Description

 The invention relates to the field of metallurgical equipment and is intended for the supply and transportation of dimensional cylindrical rolled products through sectional furnaces, giving them the rotation necessary to ensure uniform heating.

 A device is known for transporting cylindrical rolled metal through a heating furnace (see AS USSR 756165, class F 27 B 9/20, 1980), containing a furnace rolling table consisting of a group of rollers equipped with drives and installed with a turn relative to the axis of the furnace . Each roller contains a working sleeve, two discs and an asterisk and support ring fixed between the discs. Working sleeves receive rotation from drives. The pipe, being inside the rotating working sleeves, receives rotation in longitudinal movement.

 The main disadvantage of the described construction is that when the pipe enters the rotating sleeves and starts to rotate itself, its other end is on the fixed rollers of the feed roller table. Friction on the rollers results in damage to the pipe.

 Of the known devices for supplying cylindrical rolled products through a heating furnace to transportation, the closest in technical essence is the device described in A.S. USSR 244364, class F 27 In 9/20, 1969. This device contains a driving roller table and a wheel roller table, including wheels rotatable from the drive mechanisms, mounted in pairs on a frame and placed between sections of the furnace. Moreover, the axis of rotation of the wheels are inclined to the longitudinal axis of the furnace.

 A disadvantage of the known design of the device is that when the pipe enters the first pairs of wheels of the roller table, it starts to rotate, while its other end is on the fixed rollers of the master roller table.

 The resulting friction leads to damage to the pipe. In addition, there is a beating of the rear end of the pipe, which leads to its deformation.

 An object of the present invention is to provide a device for feeding cylindrical rolled products through a heating furnace without damage.

 This object is achieved in that the device for feeding and transporting rolled steel through a sectional heating furnace, comprising a driving roller table and a wheel roller table, including wheels rotatable from the drive mechanisms, mounted on a frame and placed between furnace sections, according to the invention, is provided with a wheeled roller table located between the wheels each section of the furnace with drive shafts with biconical rollers mounted on swing frames, one end of each swing frame is pivotally mounted on rack, and the second is connected via a lever system, hydraulically, wherein the swivel frame is positioned outside of the heating furnace and the shafts with biconical rollers provided with seals fixed to the furnace sections.

 Such a structural embodiment of the device allows you to feed and transport cylindrical steel without damage.

 This is achieved due to the fact that the swinging biconical rollers lower the measured cylindrical rolling at the same time to all the rollers of the wheel roller table.

 In addition, the implementation of the device in this way will also prevent heat loss in the sections of the furnace and to obtain high-quality rolled products without damage due to the installation of a sealing device in which the damper accompanies the shaft during its movement.

To explain the invention, a specific embodiment of the invention is given below with reference to the accompanying drawings, in which:
in FIG. 1 shows a perspective view of a device for feeding and transporting rolled steel through a heating furnace;
figure 2 is the same, a section along aa in figure 1;
figure 3 - biconical roller in its original position;
figure 4 - biconical roller in the lowered position;
figure 5 - sealing device, place B in figure 2;
in Fig.6 is a view along arrow B in Fig.5;
Fig.7 is a view along arrow G in Fig.5.

 A device for feeding and transporting cylindrical rolled products through a heating furnace contains a driving roller 1 and a wheel rolling table 2. Wheel roller 2 contains wheels 4 rotated from the drive mechanisms 3, mounted on the frame 5 and placed between sections of the furnace 6. The axles of the rotated wheels 4 are inclined to the longitudinal axis ovens.

 Between the wheels 4 of the roller conveyor 2 in each section of the furnace 6 there are shafts 8 rotated from the driving mechanisms 7 with biconical rollers 9, mounted on the swinging frames 10. One end of each frame 10 is suspended by the pins 11 included in the bearings 12 located on the rack 13. The second the end of each frame 10 through a system of levers 14 is connected by a hydraulic conduit 15. At the same time, the frame 10 is located outside the heating furnace 6. The biconical rollers 9 are fixed at a height that allows the passage of the rental without touching the wheels 4 of the roller table 2, and in the initial position are at the level of the master roller table 1.

 To avoid heat loss through the grooves in the furnace, in which the shafts 8 with biconical rollers 9 move, seals are provided 16. The seal 16 is made in the form of a housing 17 with guides and a shutter 18 with an opening for the passage of the shaft 8. The housing 17 is mounted on the wall of the furnace, and the shutter 18 is located in the guides of the housing 17 and lie on the shelf of the bracket 19, mounted on the frame 10.

 The device operates as follows.

 Sized rolling, for example, pipe 20, from the master roller 1 enters the furnace to the biconical rollers 9. Then, simultaneously, the hydraulic drives 15 lower the shafts 8 with the biconical rollers 9 together with the pipe 20 lying on them using the lever systems 14. The pipe 20 lies on the wheels 4 of the wheel conveyor 2 and begins to rotate, while simultaneously moving in the axial direction. As the pipe 20 moves, the biconical rollers 9 alternately rise to their original position and take the next pipe.

 The shutter 18 of the seal 16 when moving the frame 10 down under its own weight moves after the shaft 8 with a biconical roller 9. When the roller is returned to its original position, the shutter 18 raises the bracket 19.

 The proposed device for feeding and transporting cylindrical steel through a heating furnace in comparison with the known allows transporting steel without damage.

 In addition, thanks to the installation of seals mounted on the furnace section, the device also prevents heat loss.

Claims (1)

A device for feeding and transporting cylindrical rolled products through a sectional heating furnace, comprising a driving roller table and a wheel roller table, including wheels rotatable from the drive mechanisms, mounted on the frame and placed between the furnace sections, characterized in that it is provided with a roller table located between the wheels in each furnace section drive shafts with biconical rollers mounted on the swinging frames, one end of each swinging frame is pivotally mounted on the rack, and the second through the system growls s is connected hydraulically with the swinging frame is positioned outside of the heating furnace and the shafts with biconical rollers have seals attached to the furnace sections.

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