Rapid converter bottom replacing device

Abstract

The utility model belongs to the technical field of converter steelmaking, and relates to a converter bottom quick-changing device which comprises a converter bottom quick-changing mechanism, a molten steel tank car for placing and bearing the converter bottom quick-changing mechanism, and a track matched with the molten steel tank car, the molten steel tank car alternately conveys the converter bottom quick-changing mechanism to a converter bottom hoisting station and a converter bottom changing station which are located on the track, and the converter bottom quick-changing mechanism comprises a platform frame and a working platform; the platform frame is placed on the molten steel tank car, the operation platform is arranged at the top of the platform frame, and a hydraulic jacking device used for jacking the bottom of a converter is arranged on the operation platform. The converter bottom quick-change mechanism is of an independent frame structure, and the converter bottom quick-change mechanism is alternately conveyed to the converter bottom hoisting station and the converter bottom change station on the track through the steel ladle car, so that the converter bottom change efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of converter steelmaking and relates to a converter bottom rapid replacement device. Background Art

[0002] As the mainstream steelmaking equipment, converters are gradually gaining attention from major steel mills as my country's green, low-carbon, high-quality metallurgical technology develops. The converter's large-flow bottom blowing and bottom powder spraying + oxygen smelting methods are gradually gaining attention from major steel mills. Under this smelting mode, the erosion rate of the converter's bottom refractory material is significantly accelerated, which cannot keep pace with the life of the furnace body refractory material. Therefore, the furnace bottom refractory material needs to be replaced several times during the furnace service.

[0003] When replacing the refractory material of the furnace bottom, the old furnace bottom must be removed first. The commonly used method of replacing the furnace bottom is to use a furnace repair car to replace the furnace bottom, but this method requires moving the molten steel tank car to the end of the track to make room for it. Not only does it have certain requirements on the track length, but its own motor and electronic control system also need to be temporarily powered on, which is relatively cumbersome, resulting in low efficiency in replacing the converter bottom. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a converter bottom quick replacement device to improve the replacement efficiency of the converter bottom.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] A converter furnace bottom quick-change device comprises a converter furnace bottom quick-change mechanism, a molten steel tank car for placing and carrying the converter furnace bottom quick-change mechanism, and a track matched with the molten steel tank car, wherein the molten steel tank car transports the converter furnace bottom quick-change mechanism alternately to a furnace bottom hoisting station and a furnace bottom replacement station located on the track, and the converter furnace bottom quick-change mechanism comprises a platform frame and a working platform;

[0007] The platform frame is placed on the molten steel tank car, the working platform is arranged on the top of the platform frame, and a hydraulic jacking device for jacking up the bottom of the converter is provided on the working platform.

[0008] Furthermore, the converter bottom quick-change mechanism also includes safety railings arranged around the edges of the working platform.

[0009] Furthermore, the converter bottom quick-change mechanism also includes a steel ladder connecting the working platform and the bottom of the platform frame.

[0010] Furthermore, a hydraulic jacking bearing platform for installing the hydraulic jacking device is provided in the platform frame, the hydraulic jacking bearing platform is arranged on a side of the platform frame close to the molten steel tank car, and the hydraulic jacking bearing platform is erected on an ear shaft support seat in the molten steel tank car.

[0011] Furthermore, a hydraulic station for providing hydraulic force to the hydraulic jacking device is provided in the platform frame.

[0012] The beneficial effects of the utility model are:

[0013] 1) In a quick-changing device for a converter bottom provided by the utility model, a quick-changing mechanism for the converter bottom is an independent frame structure, which is flexible and can be hoisted to a designated converter's molten steel tank car by a crane according to a maintenance plan, without occupying additional track space. One set of quick-changing devices can be used for the maintenance of multiple converter bottoms, saving investment; and the quick-changing mechanism for the converter bottom is directly placed and installed on the molten steel tank car, and the quick-changing mechanism for the converter bottom is alternately transported to a bottom hoisting station and a bottom replacement station on the track by the molten steel tank car. Compared with the method of replacing the bottom by a furnace repair car in the prior art, the utility model simplifies the replacement process of the converter bottom and improves the replacement efficiency of the converter bottom.

[0014] 2) The converter bottom quick replacement device uses the original molten steel tank hoisting position and converter steel tapping position as the bottom hoisting position and bottom replacement position, without adding the molten steel tank car travel control point, thus improving the utilization efficiency of the molten steel tank car and track.

[0015] 3) Safety movable railings are installed on the working platform to avoid interference between equipment while in motion and ensure work safety.

[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0018] Figure 1 This is a schematic diagram of the structure of the quick-change mechanism for the bottom of a converter furnace of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the quick-change mechanism of the converter bottom of the utility model (the hydraulic jacking device is in the jacking state);

[0020] Figure 3 This is a front view structural diagram of the quick-change mechanism for the bottom of a converter furnace of the utility model;

[0021] Figure 4The utility model is a schematic diagram of the working state of a converter bottom quick replacement device.

[0022] Figure numerals: furnace bottom lifting station 1; furnace bottom replacement station 2; safety railing 3; working platform 4; steel ladder 5; hydraulic station 6; hydraulic jacking device 7; hydraulic jacking bearing platform 8; platform frame 9; molten steel tank truck 10. DETAILED DESCRIPTION

[0023] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0024] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0025] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] See also Figure 1 to Figure 4 , which is a quick-change device for a converter bottom, comprising a quick-change mechanism for a converter bottom, a molten steel tank car 10 for carrying the quick-change mechanism for a converter bottom, and a track matched with the molten steel tank car 10, and the molten steel tank car 10 transports the quick-change mechanism for a converter bottom alternately to a bottom hoisting station 1 and a bottom replacement station 2, and the quick-change mechanism for a converter bottom comprises a safety railing 3, an operating platform 4, a steel ladder 5, a hydraulic station 6, a hydraulic jacking device 7, a hydraulic jacking bearing platform 8, and a platform frame 9;

[0027] Among them, the platform frame 9 is placed on the molten steel tank car 10, the working platform 4 is arranged on the top of the platform frame 9, the steel ladder 5 connects the working platform 4 and the bottom of the platform frame 9 (that is, the molten steel tank car 10), and a hydraulic jacking device 7 for jacking the bottom of the converter is provided on the working platform 4.

[0028] Furthermore, a hydraulic jacking bearing platform 8 for installing the hydraulic jacking device 7 is provided in the platform frame 9, and the hydraulic jacking bearing platform 8 is arranged on one side of the platform frame 9 close to the molten steel tank car 10;

[0029] Furthermore, a hydraulic station 6 for providing hydraulic force to the hydraulic jacking device 7 is provided in the platform frame 9 .

[0030] Furthermore, safety railings 3 are provided on the four edges of the working platform 4 .

[0031] Specifically, the furnace bottom lifting station 1 utilizes the molten steel tank lifting station in the original converter steelmaking process, and the furnace bottom replacement station 2 utilizes the converter steel tapping station in the original converter steelmaking process, and the converter bottom quick-change mechanism is an independent frame structure, which is placed and connected to the molten steel tank car 10 (that is, the converter bottom quick-change mechanism can be placed on the molten steel tank car 10), and has high flexibility. It can be lifted by a crane to the designated converter molten steel tank car for operation according to the maintenance plan, without occupying additional track space.

[0032] The hydraulic lifting platform 8 on the platform frame 9 is mounted on the trunnion support seat of the molten steel tank car 10, and the force point of the hydraulic lifting platform 8 is consistent with the force point of the trunnion support seat. The power supply of the molten steel tank car 10 is modified to enable it to provide temporary power supply for the hydraulic station 6.

[0033] Preferably, for working conditions where there is interference with the movement of the quick-change device such as the addition and removal of the ladle cover, the safety railings 3 at the front and rear ends of the working platform 4 are set as safety movable railings, so that the safety movable railings can be removed or replaced when the molten steel tank car 10 is moving to avoid movement interference between equipment.

[0034] The platform frame 9 is provided with three platforms, namely, a working platform 4 for maintenance work, an intermediate layer for accommodating a hydraulic jacking device 7 and a hydraulic station 6, and a bottom layer connected to a molten steel tank car 10, and is provided with a three-layer steel ladder 5 for easy maintenance.

[0035] The working principle and steps of the converter bottom quick replacement device are as follows:

[0036] 1) The crane hoists the converter bottom quick-change mechanism onto the molten steel tank car 10 located at the bottom hoisting station 1, wherein the hydraulic lifting bearing platform 8 is firmly connected to the trunnion support seats on both sides of the molten steel tank car 10, the power supply of the hydraulic station 6 is connected to the reserved port of the molten steel tank car 10, and the operator leaves the working platform 4 through the steel ladder 5;

[0037] 2) The molten steel tank car 10 enters the furnace bottom replacement station 2;

[0038] 3) The operator starts the hydraulic jacking device 7 to jack up until the top of the hydraulic jacking device 7 contacts the bottom of the converter;

[0039] 4) Remove the furnace bottom fasteners, then start the hydraulic jacking device 7 to lower the old furnace bottom to the working platform 4;

[0040] 5) The operator leaves the working platform 4 via the steel ladder 5, and the molten steel tank truck 10 drives to the furnace bottom hoisting station 1;

[0041] 6) The crane lifts the old furnace bottom to the designated position on the floor, and lifts the new furnace bottom onto the hydraulic lifting device 7;

[0042] 7) After the refractory material of the converter bottom is repaired and tilted to 0°, the molten steel tank car 10 enters the furnace bottom replacement station 2;

[0043] 8) The operator starts the hydraulic jacking device 7 to lift the new furnace bottom into place and install the fasteners;

[0044] 9) The operator leaves the working platform 4, and the molten steel tank truck 10 drives to the furnace bottom hoisting station 1;

[0045] 10) The operator leaves the platform frame 9, disconnects the power supply between the hydraulic station 6 and the molten steel tank car 10, and the crane lifts the converter bottom quick-change mechanism to the designated position on the ground, and the converter bottom replacement is completed.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A converter bottom quick replacement device, characterized in that: It comprises a converter furnace bottom quick-change mechanism, a molten steel tank car used for placing and carrying the converter furnace bottom quick-change mechanism, and a track matched with the molten steel tank car, and the molten steel tank car transports the converter furnace bottom quick-change mechanism alternately to a furnace bottom hoisting station and a furnace bottom replacement station located on the track, and the converter furnace bottom quick-change mechanism comprises a platform frame and a working platform; The platform frame is placed on the molten steel tank car, the working platform is arranged on the top of the platform frame, and a hydraulic jacking device for jacking up the bottom of the converter is provided on the working platform.

2. The converter bottom quick replacement device according to claim 1 is characterized in that: The converter bottom quick-change mechanism also includes safety railings arranged around the edges of the working platform.

3. The converter bottom quick replacement device according to claim 1, characterized in that: The converter bottom quick-change mechanism also includes a steel ladder connecting the working platform and the bottom of the platform frame.

4. The converter bottom quick replacement device according to claim 1, characterized in that: A hydraulic jacking bearing platform for installing the hydraulic jacking device is provided in the platform frame. The hydraulic jacking bearing platform is arranged on a side of the platform frame close to the molten steel tank car, and the hydraulic jacking bearing platform is erected on an ear shaft support seat in the molten steel tank car.

5. The converter bottom quick replacement device according to claim 1, characterized in that: A hydraulic station for providing hydraulic force to the hydraulic jacking device is arranged in the platform frame.

Images