Off-line repair device for coke oven door

Abstract

The invention relates to an off-line repair device for a coke oven door. The device comprises a gantry with a pulley, and an oven door undercarriage is hung below the gantry. The device is characterized in that: a vertical rail is arranged on the gantry, and a transverse rail is arranged below the gantry; the oven door undercarriage comprises a head framework, an oven door frame and a tail framework; the oven door frame is connected with the head framework and the tail framework respectively; the head framework is provided with a guide wheel; the tail framework is provided with wheels; and the tail framework is also provided with a hydraulic lifting turnover mechanism. Compared with the prior art, the device has the advantages that: 1) a set of onboard hydraulic system realizes two moving functions of lifting and turnover of the oven door undercarriage so as to meet the repair and maintenance requirements of various coke oven doors of different types; and 2) the oven door undercarriage moves along the rails to realize vertical and horizontal position conversion, the device has more compact structure and more stable, safer and more efficient operation, and the hydraulic lifting turnover mechanism has more coherent operating action and is easier for operation and maintenance.

Description

technical field [0001] The invention relates to the field of coke ovens in the coking industry, in particular to an off-line repair device for coke oven doors. Background technique [0002] China is currently the world's largest coke producer and exporter. Driven by the continuous progress and development of new coking technologies, China's coking industrial structure has been optimized and upgraded, forming the most complete coking industrial system with Chinese characteristics. In particular, the development of ultra-large-volume coke oven technology and equipment has played a vital role in promoting the development of the entire Chinese coking industry, which has greatly changed the image of high consumption and high emissions in the coking industry. [0003] In terms of the furnace body structure of the super large volume coke oven, by studying the characteristics and behavior of the cold and hot deformation of the key parts of the large coke oven, using structural mecha...

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Problems solved by technology

[0003] In terms of the furnace body structure of the super large volume coke oven, by studying the characteristics and behavior of the cold and hot deformation of the key parts of the large coke oven, using structural mechanics and material mechanics as the basic means, the iron parts with high structural strength and high tightness are developed. Especially the furnace door is subject to large heat deformation and high sealing requirements. In order to ensure tightness, it needs to be dismantled and repaired frequently. At present, it is common to remove the furnace door with the furnace door detachment mechanism, and the furnace door detachment mechanism is mounted and needs to be repaired After the furnace door is aligned with the furnace door landing gear, hang the furnace door to the furnace door landing gear in the vertical state on the gantry frame, and manually operate the furnace door locking mechanism with a wrench to ensure that the furnace door and the furnace door are locked together. The landing frame is connected as a whole, and then the hoist of the furnace door landing gear is started, and the furnace door landing gear and the furnace door are slowly laid flat under the action of gravity, and maintenance can be carried out. The furnace door landing gear and the furnace door are at a vertical position, then push the furnace door to rotate 180° by hand, then start the furnace door landing gear winch again, and slowly lay the furnace door landing gear and the furnace door flat again, and then the furnace door can be repaired On the other hand, due to the heavy weight of the furnace door, a furnace door has to be lifted and lowered repeatedly, which is labor-intensive and low in efficiency, and cannot keep up with the maintenance progress of the furnace door on site.

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