Auxiliary device for construction of internal structure of furnace shell of blast furnace

Abstract

The utility model relates to the technical field of blast furnace shell construction, and discloses an auxiliary device for blast furnace shell internal structure construction, which comprises a construction platform arranged in a blast furnace shell, and a plurality of chain blocks connected with the top of the blast furnace shell are arranged on the periphery of the construction platform; the climbing derrick is fixedly arranged in the blast furnace shell along the vertical direction and comprises a cylindrical bracket and a ladder stand in the bracket; one end of the horizontal channel is connected to the climbing derrick, and the other end of the horizontal channel is connected to an iron notch of a blast furnace shell. By means of the auxiliary device for construction of the internal structure of the blast furnace shell, constructors can safely and rapidly enter and exit from the blast furnace shell, and the construction efficiency of the internal structure of the blast furnace shell is improved.

Description

Auxiliary devices for the construction of the internal structure of the blast furnace shell Technical Field

[0001] This utility model relates to the field of blast furnace shell construction technology, specifically to an auxiliary device for the construction of the internal structure of a blast furnace shell. Background Technology

[0002] A typical blast furnace shell consists of 17 sections with 16 circumferential welds. The inner water-cooled wall also has 17 sections, and the uppermost flange is at an elevation of 39 meters. During installation, a ring platform is erected outside each section to facilitate installation, welding, corrosion protection, and flaw detection. Inside the furnace shell, eight 5-ton chain hoisting platforms serve as operating platforms. As the furnace shell is installed, the installation of the internal water-cooled walls, furnace construction, flaw detection, and corrosion protection all require sequential follow-up. Therefore, with the increasing installation height, approximately 40 people from various disciplines will be accessing the furnace shell daily. A safe and convenient construction platform is crucial during the installation process.

[0003] Typically, construction workers climb from the outside of the furnace shell, ascending to the top via various annular platforms. After scaling the uppermost section of the furnace shell, they enter the interior via an "internal straight ladder passage," increasing the climbing height. Furthermore, the conventional "internal straight ladder passage" is welded directly along the inner wall of the furnace shell. Since the furnace shell's diameter gradually decreases from bottom to top, workers must climb supine, which is extremely dangerous. When installing the water-cooled walls, the lower ladders need to be removed, cutting off the access to the furnace bottom. Subsequent workers needing to reach the furnace bottom to measure the center and furnace shell elevation must climb back up the furnace shell, descend the external ladder to the taphole, and then use a temporary ladder to reach the furnace bottom, further increasing the physical exertion and danger of the back-and-forth movement to the furnace bottom during center measurements. Summary of the Invention

[0004] This utility model was made to solve the above-mentioned technical problems. Its purpose is to provide an auxiliary device for the construction of the internal structure of a blast furnace shell. With the help of this auxiliary device, construction personnel can safely and quickly enter and exit the blast furnace shell, thereby improving the construction efficiency of the internal structure of the blast furnace shell.

[0005] According to one embodiment of the present invention, an auxiliary device for the construction of the internal structure of a blast furnace shell is provided, comprising: a construction platform, disposed inside the blast furnace shell, with a plurality of chain hoists connected to the top of the blast furnace shell on its outer periphery; a climbing frame, vertically fixed inside the blast furnace shell, including a cylindrical support and an internal ladder; and a horizontal channel, one end of which is connected to the climbing frame and the other end of which is connected to the taphole of the blast furnace shell.

[0006] As one implementation, a protective cage is provided along the length of the outer periphery of the ladder.

[0007] In one embodiment, the lower end of the climbing derrick is fixed to the bottom of the blast furnace, and the middle part is located on the side of the construction platform.

[0008] In one implementation, the upper end of the climbing derrick extends above the blast furnace.

[0009] As one embodiment, the construction platform includes: a fixed hanging platform with several chain hoists connected to the top of the blast furnace shell on its outer periphery; several telescopic beams that slide radially on the fixed hanging platform and extend their outer ends toward the inner wall of the blast furnace shell; and movable scaffolding that is mounted on the telescopic beams.

[0010] In one embodiment, the fixed hanging platform includes a plurality of supporting steel pipes arranged radially and a steel plate fixed on the upper side of the supporting steel pipes, and the telescopic beam is slidably disposed in the supporting steel pipes.

[0011] In one embodiment, both the supporting steel pipe and the telescopic beam have rectangular cross-sections.

[0012] As one implementation, the climbing derrick is equipped with a fall arrestor.

[0013] Based on the above description and practical application, the auxiliary device for constructing the internal structure of the blast furnace shell of this utility model, by setting up a vertical climbing frame inside the blast furnace shell and a horizontal passage between the taphole and the climbing frame, allows construction personnel to enter the blast furnace shell from the taphole. They can then climb upwards or downwards through the horizontal passage and the climbing frame to reach the bottom of the blast furnace or the construction platform inside. This ensures the safe and quick entry and exit of construction personnel from the blast furnace shell, improving the construction efficiency of the internal structure of the blast furnace shell.

[0014] The construction platform is connected to the top of the blast furnace shell via a chain hoist. As construction progresses, workers can operate the hinges to move the construction platform upwards within a certain range, enabling continuous operation and further improving construction efficiency.

[0015] The climbing derrick consists of a cylindrical support frame and an internal ladder. When construction workers climb the ladder, the outer support frame provides some protection, preventing them from falling to the side and improving the safety of the device. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the auxiliary device for the construction of the internal structure of the blast furnace shell involved in one embodiment of the present invention.

[0017] Figure 2 is a top view of an auxiliary device for the construction of the internal structure of a blast furnace shell, according to one embodiment of this utility model.

[0018] The attached figures are labeled as follows:

[0019] 1. Construction platform

[0020] 11. Fix the hanging platform

[0021] 12. Telescopic beam

[0022] 13. Movable springboard

[0023] 2. Climbing the derrick

[0024] 3. Horizontal channel

[0025] 4. Chain hoist

[0026] 5. Blast furnace shell Detailed Implementation

[0027] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0028] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. It should be noted that in this disclosure, the terms "comprising," "configured with," and "set in" are used to indicate an open-ended inclusion, meaning that additional elements / components / etc. may exist besides those listed; the terms "first," "second," etc., are used only as labels and are not intended to limit the number or order of objects; the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] According to one embodiment of this utility model, an auxiliary device for the construction of the internal structure of a blast furnace shell is provided. Referring to Figures 1 and 2, the auxiliary device includes a construction platform 1, a climbing frame 2, and a horizontal passage 3. The construction platform 1 is located inside the blast furnace shell 5, and its outer periphery is provided with several chain hoists 4 connected to the top of the blast furnace shell 5. The climbing frame 2 is vertically fixed inside the blast furnace shell 5 and includes a cylindrical support and an internal ladder. One end of the horizontal passage 3 is connected to the climbing frame 2, and the other end is connected to the taphole of the blast furnace shell 5.

[0031] In use, construction workers can enter the blast furnace shell 5 from the taphole, pass through the horizontal passage 3 to reach the climbing frame 2, and use the ladders in the climbing frame 2 to climb up or down to reach the bottom of the blast furnace or the construction platform 1 inside the blast furnace. This ensures that construction workers can safely and quickly enter and exit the blast furnace shell 5, improving the construction efficiency of the internal structure of the blast furnace shell 5.

[0032] The construction platform 1 is connected to the top of the blast furnace shell 5 via a chain hoist 4. As the construction progresses, the construction personnel can operate the hinge to move the construction platform 1 upward within a certain range, enabling continuous operation and further improving construction efficiency.

[0033] The climbing derrick 2 includes a cylindrical support frame and an internal ladder. When construction workers climb the ladder, the outer support frame can provide some protection to prevent them from falling to the side, thus improving the safety of the device.

[0034] As an implementation method, since the supports in the climbing derrick 2 are usually large in size, a protective cage is also provided along the length of the outer perimeter of the ladder to form a more suitable climbing space, which can further improve the safety of construction workers when climbing.

[0035] In one implementation, the lower end of the climbing frame 2 is fixed to the bottom of the blast furnace, and the middle part is located on the side of the construction platform 1. Construction workers can easily reach the construction platform 1 or the bottom of the blast furnace while climbing the ladder.

[0036] As one implementation method, the upper end of the climbing derrick 2 extends above the blast furnace, and as the construction of the blast furnace shell 5 continues, the height of the shell gradually increases. Extending the upper end of the climbing derrick 2 above the blast furnace ensures that the construction platform 1 is always located to the side of the climbing derrick 2, facilitating the entry and exit of construction personnel and their work up and down the furnace shell.

[0037] In one embodiment, the construction platform 1 includes a fixed hanging platform 11, several telescopic beams 12, and movable ramps 13. The fixed hanging platform 11 is located at the center, and several chain hoists 4 connected to the top of the blast furnace shell 5 are provided on its outer periphery; the several telescopic beams 12 are slidably mounted on the fixed hanging platform 11 along the radial direction, and the outer ends of the telescopic beams 12 extend toward the inner wall of the blast furnace shell 5; the movable ramps 13 are arranged around the fixed hanging platform 11 and connected to the telescopic beams 12.

[0038] During use, the fixed lifting platform 11 is always located at the center of the blast furnace, and the movable scaffolding 13 is located on the outer periphery of the fixed lifting platform 11. As the construction of the blast furnace shell 5 continues, its inner diameter gradually decreases. When the construction platform 1 needs to be raised, the movable scaffolding 13 can be removed, the telescopic beam 12 can be retracted towards the center, and the height of the construction platform 1 can be lowered. Then, an appropriate number of movable scaffolding 13 can be erected to form a construction platform 1 of appropriate size at different heights.

[0039] In one embodiment, the fixed hanging platform 11 includes several supporting steel pipes arranged radially and a steel plate fixed to the upper side of the supporting steel pipes, with the telescopic beam 12 slidably disposed within the supporting steel pipes. This structural form, while achieving the aforementioned telescopic adjustment of the size of the construction platform 1, also ensures that the construction platform 1 has good strength and stability, making construction operations safer.

[0040] Furthermore, in this embodiment, both the supporting steel pipe and the telescopic beam 12 have rectangular cross-sections. When using the construction platform 1, there is no relative rotation between the supporting steel pipe and the telescopic beam 12, further improving the stability of the construction platform 1.

[0041] As one implementation method, a fall arrestor is installed in the climbing derrick 2. When construction workers climb the climbing derrick 2, they can fasten their safety belts to the fall arrestor, further improving the safety of construction workers when climbing up and down the derrick 2.

[0042] In one specific embodiment, the fixed hanging platform 11 is an octagonal steel platform, with the lower part being a supporting steel pipe welded from No. 22 channel steel, and the upper part being a 5mm checkered plate. Several additional supports are welded between adjacent supporting steel pipes. The seamless steel pipe of *10 improves the stability of the patterned plate and ensures that it is not easily deformed during use. The telescopic beam 12 is a rectangular steel section welded from No. 16 channel steel, one end of which can be stably inserted into the supporting steel pipe and can be extended or retracted when needed. The movable plank 13 is a wooden board, which is laid on the adjacent telescopic beam 12 to form a ring platform around the fixed hanging plate 11.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An auxiliary device for the construction of the internal structure of a blast furnace shell, characterized in that, include: The construction platform is located inside the blast furnace shell, and has several chain hoists connected to the top of the blast furnace shell on its outer perimeter; the climbing frame is fixed vertically inside the blast furnace shell, including a cylindrical support and its internal ladder; the horizontal passage is connected at one end to the climbing frame and at the taphole of the blast furnace shell.

2. The auxiliary device as described in claim 1, characterized in that, The ladder is equipped with a protective cage along its length.

3. The auxiliary device as described in claim 1, characterized in that, The lower end of the climbing derrick is fixed to the bottom of the blast furnace, and the middle part is located on the side of the construction platform.

4. The auxiliary device as described in claim 3, characterized in that, The upper end of the climbing derrick extends above the blast furnace.

5. The auxiliary device as described in claim 1, characterized in that, The construction platform includes: a fixed hanging platform with several chain hoists connected to the top of the blast furnace shell on its outer periphery; several telescopic beams that slide radially on the fixed hanging platform and extend outwards toward the inner wall of the blast furnace shell; and movable scaffolding on the telescopic beams.

6. The auxiliary device as described in claim 5, characterized in that, The fixed hanging platform includes a plurality of supporting steel pipes arranged radially and a steel plate fixed on the upper side of the supporting steel pipes, and the telescopic beam is slidably disposed in the supporting steel pipes.

7. The auxiliary device as described in claim 6, characterized in that, Both the supporting steel pipe and the telescopic beam have rectangular cross-sections.

8. The auxiliary device as described in claim 1, characterized in that, The climbing derrick is equipped with a fall arrestor.

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