Heating furnace of walking beam type

Claim 2

In the heating furnace of the walking beam type including a hearth and movable skid beams and fixed skid beams, the improvement which comprises: cross beams positioned in the width direction of the heating furnace, in parallel with the surface of the hearth at intervals for supporting said fixed skid beams, each of said cross beams having both ends fixed on side walls of the heating furnace; intermediate members extending downwardly from a fixed skid beam to a cross beam so as to form a required space between the fixed skid beams and the cross beams; support pipes connecting said movable skid beams and the hearth; and a driving device connected with the hearth so as to have the hearth make parallelogrammic movement.

Claim 3

The heating furnace as claimed in claim 1 wherein each said intermediate member is a T-shaped tubular member, integrated with a tubular fixed skid beam and communicAting therewith, with a baffle plate extending perpendicularly downwardly inside each of the intermediate members, cooling water flowing from the fixed skid beams through said intermediate members.

Claim 4

The heating furnace as claimed in claim 1 wherein each said intermediate member is an inverted T-shaped tubular member integrated with a tubular cross beam and communicating therewith, with a baffle plate extending upwardly inside each of the intermediate members, cooling water flowing from the cross beams through said intermediate members.

Claim 5

The heating furnace as claimed in claim 1 wherein said hearth has its central part elevated with a downward slope to respective side walls of the heating furnace, each side wall of the furnace defining an opening with said hearth, molten scale being discharged from the openings.

Claim 6

The heating furnace as claimed in claim 1 wherein said hearth has an inclination from the outer part toward the central part, said central part defining an opening, molten scale being discharged from said opening.

Claim 7

The heating furnace as claimed in claim 1, wherein said cross beam is supported by an intermediate support having a lower end fixed on the foundation, and extending perpendicularly through an opening provided on the hearth.

Claim 8

In the heating furnace of the walking beam type including a hearth and skid beams and fixed skid beams, the improvement which comprises cross beams positioned in the width direction of the heating furnace, in parallel with the surface of the hearth and at intervals for supporting said fixed skid beams, each of said cross beams having both ends fixed on side walls of the heating furnace; intermediate members extending downwardly from a fixed skid beam to a cross beam so as to form a required space between the fixed skid beams and the cross beams; support pipes fixing said movable skid beams on the hearth; a driving device connected with the hearth so as to have the hearth make parallelogrammic movement; scale scrapers provided in the width direction of the heating furnace, in parallel with the surface of the heating furnace and at intervals, each of said scale scrapers having both ends fixed on the lower part of side walls of the heating furnace, said hearth having openings for discharging scale.

Claim 9

In the heating furnace of the walking beam type including a hearth and skid beams and fixed skid beams, the improvement which comprises cross beams positioned in the width direction of the heating furnace, in parallel with the surface of the hearth and at intervals for supporting said fixed skid beams, each of said cross beams having both ends fixed on side walls of the heating furnace; intermediate members extending downwardly from a fixed skid beam to a cross beam so as to form a required space between the fixed skid beams and the cross beams; support pipes fixing said movable skid beams on the hearth; a driving device connected with the hearth so as to have the hearth make parallelogrammic movement; scale scrapers provided in the width direction of the heating furnace, in parallel with the surface of the heating furnace and at intervals, each of said scale scrapers having both ends fixed on the lower part of side walls of the heating furnace, said hearth having openings for discharging scale.

Claim 10

The heating furnace as claimed in claim 7, wherein the outer surface of each of said scale scrapers is lined with a refractory material.

Claim 11

The heating furnace as claimed in claim 7, wherein each of said scale scrapers has a projection pointing downwardly for scraping scale.

Claim 12

The heating furnace as claimed in claim 7, wherein each said scale scraper is fixed on an intermediate support having its upper end and lower end fixed, respectively, on a cross beam and the foundation.