Method of repairing a coke oven buckstay and a moving device for use in such method

• US 6,733,635 B1
• Filed: 12/22/1999
• Issued: 05/11/2004
• Est. Priority Date: 06/29/1999
• Status: Expired due to Fees

• Current Assignee: JFE Steel Corporation (JFE Holdings Incorporated)
• Original Assignee: JFE Steel Corporation (JFE Holdings Incorporated)
• Inventors: Uchida, Tetsuro, Tamura, Nozomu, Kamide, Nobuya, Ozawa, Tatsuya
• Primary Examiner(s): Caldarola, Glenn
• Assistant Examiner(s): WACHTEL, ALEXIS A
• Application Number:
  US09/469,819
• Time in Patent Office: 1,602 Days
• Field of Search: 52/86, 702/267.1, 702/267.2, 702/270, 702/239, 110/336, 110/337, 110/338, 110/339, 110/340, 110/349, 105/4.1, 105/4.2, 105/4.3, 105/4.4, 105/163.1, 105/163.2, 105/215.2, 105/433
• US Class Current: 202/239
• CPC Class Codes: C10B 29/06 Preventing or repairing leakages of the brickwork
• CPC Class Codes: C10B 29/08 Bracing or foundation of the ovens
• CPC Class Codes: C10B 45/00 Other details

Abstract

A coke oven buckstay moving device and method which can be used to quickly, reliably, and smoothly repair buckstays compared to conventional methods and devices. The coke oven buckstay moving means includes a main car, a subcar, a frame, and securing means. The main car is used when repairing pillered buckstays that support oven walls of the coke oven, and moves on a coke side platform or a machine side platform. The subcar is placed on the main car, and can freely move forward and backward in a direction of a lengthwise direction of the coke oven. The frame is provided in a standing manner on the subcar. The securing members are mounted to the frame and are used to grasp and secure the buckstays. According to the method, a damaged portion of the buckstay is secured to the subcar, cut, and then removed. Reversing the steps, a replacement buckstay is secured to the subcar, moved into position, and welded into place. The subcar is detached, and the oven repaired.

Claims

1. A coke oven buckstay moving device for removing and replacing a defective portion of the buckstay, which supports a wall of the coke oven, with a new member, said moving device comprising:

a main car which moves on a side platform of the coke oven;

a subcar placed on the main car, freely movable forward and backward in a lengthwise direction of the coke oven; and

securing means, mounted to the subcar, for securing the defective portion or the new member of the buckstay.

2. The moving device of claim 1, wherein said subcar further comprises a frame mounted on said subcar for movement therewith, wherein said securing means are affixed to said frame.

3. The moving device of claim 2, wherein said securing means comprises a grasping bolt for engaging said buckstay.

4. The moving device of claim 2, wherein said securing means comprises:

a chain block, mounted to said frame; and

a suspension piece for engaging and holding the buckstay.

5. The moving device of claim 1, wherein said main car is movable on a set of guide rails provided on the side platform.

6. The moving device of claim 1, wherein said side platform is a coke side platform.

7. The moving device of claim 1, wherein said side platform is a machine side platform.

8. A method for repairing a coke oven buckstay by replacing a defective portion of the coke oven buckstay with a new member, comprising the steps of:

moving a main car that moves on a side platform to a front side of the buckstay that needs to be repaired,

forwardly moving a subcar disposed on the main car to a location near the buckstay that needs to be repaired,

securing the defective portion of the buckstay that needs to be repaired to the subcar via securing means,

cutting off and removing the secured defective portion of the buckstay,

mounting a replacement buckstay member to the securing means mounted to the subcar,

moving the main car to the front side of the buckstay that needs to be repaired,

forwardly moving the subcar to position said replacement member,

mounting and welding the replacement member to the remaining portion of the buckstay of the previous location of the removed defective portion.

9. The method of claim 8, wherein said cutting and removing step further comprises the steps of:

cutting said secured defective portion at a location proximate said platform;

moving said subcar backwardly, away from said coke oven to facilitate removal of said cut and secured defective portion; and

unsecuring and removing said cut and secured buckstay from said subcar.

10. The method of claim 8, wherein said side platform is a coke side platform.

11. The method of claim 8, wherein said side platform is a machine side platform.