Coke oven supporting plate mounting method

Abstract

A coke oven supporting plate mounting method is characterized by comprising the following steps: a, erecting a supporting bracket of a coke oven supporting plate, b, placing a wood springboard, c, placing the supporting plate according to a line, d, building an upper refractory masonry, and e, dismantling the bracket body and the supporting bracket after building of an oven top is completed. The coke oven supporting plate mounting method has the advantages that the scaffold is convenient to erect, the wood springboard supporting structure is simple, and the construction cost is low.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coke oven construction, in particular to a coke oven support plate installation method. BACKGROUND

[0002] Coke oven is an indispensable high-temperature thermal equipment in modern metallurgical industry, commonly used for coal dry distillation. With the continuous development of coke oven structure towards large-scale, high-capacity and environmentally friendly, the technical standards and safety requirements of its masonry construction are also increasing. Especially at the joint part of the coke oven roof and the oven wall, a support plate is usually set as a transition component for temporary or permanent support of the upper refractory masonry.

[0003] In the existing construction process, the installation methods of coke oven support plate mainly include the following types: 1. Synchronous masonry embedded support plate method For example, Chinese patent document CN108754032A synchronously embeds a steel support plate in the brick joint during oven wall masonry, fixes one end and overhangs the other end for bearing refractory bricks. This method is simple to operate, but the overhanging part has no additional support, and uneven stress during masonry process can easily cause the support plate to tilt or fall out.

[0004] For example, Chinese patent document CN111562399A arranges temporary components such as angle steel, channel steel and scaffold rod under the support plate for bearing. However, this method has the problems of poor support stability, non-uniform arrangement, low installation efficiency, and difficulty in subsequent removal, which affects the masonry progress.

[0005] 2. Template system assisted positioning method Some enterprises use template system to assist in the installation of support plate, temporarily fix the steel plate on the wooden or aluminum template, and then perform the upper masonry. This method has poor flexibility, high dependence on manual coordination, and is not suitable for large-scale standardized construction.

[0006] 3. No support method or manual plate holding method (common knowledge) In small and medium-sized coke ovens, some construction personnel will directly hold or temporarily support the steel plate with bricks for masonry. This method is extremely low in efficiency and has serious safety hazards, which is a backward construction method.

[0007] In addition, Chinese patent documents CN102442314A, CN110749059A, CN108369429A, CN108024574A and the published paper "Research on Key Technologies of Large-scale Stamping Coke Oven Wall Masonry Construction" (Journal of Refractories, No. 6, 2020) all have one or more of the above defects.

[0008] In view of the above prior art and common knowledge, it can be seen that the prior art generally lacks a unified, safe, stable and easy-to-disassemble operation support platform, and mostly relies on experience for construction; the positioning mode of the support plate is primitive, the position accuracy is not high, and the support plate is easy to deviate, which affects the quality of the furnace top structure; the structural design is mostly a flat plate or an L-shaped steel plate, and the cooperation with the refractory masonry is not fully considered, so that the brick body cannot be effectively prevented from falling off; the support system structure form is not unified, and lacks standardized design, resulting in long repeated erection time and low work efficiency.

[0009] Therefore, it is urgent to provide a systematic installation method based on a standard steel pipe scaffold, integrated with an operation platform, positioning assistance and support plate structure cooperation, to solve the above technical problems and improve the quality of the coke oven masonry and construction safety. SUMMARY

[0010] The purpose of the present application is to provide a coke oven support plate installation method, which can significantly improve the stability and safety of the support plate installation, and improve the masonry efficiency, and is suitable for standardized masonry construction of large and medium-sized coke oven wall structures.

[0011] To achieve the above purpose, the present application proposes the following technical solutions: A coke oven support plate installation method, comprising the following steps: a. erection of a support bracket for the coke oven support plate: erecting a scaffold structure, using 48x3.0mm steel pipes as vertical rods and horizontal rods, with a longitudinal spacing of 1.5m, a horizontal spacing of 0.9m-1.0m, and a step distance of 1.5m, and using double fasteners to connect the top and setting a scissor brace to enhance the overall stability; b. laying an operation platform: placing a 30x400mm wooden jump plate on the top of the scaffold as a temporary operation platform for placing and masonry of the support plate; adjusting the platform level by wooden wedges or jack regulators to ensure the flatness of the platform surface; c. positioning the support plate according to the line: based on the pre-measured centerline position, accurately placing the support plate on the operation platform, adjusting the gap and angle; d. masonry of the upper refractory brick structure: after the support plate is completely installed and confirmed to be firm, constructing the furnace top masonry above it, constructing it in segments along the horizontal direction to avoid local stress; e. after the furnace top masonry is stable and maintained, removing the scaffold, wooden jump plate and auxiliary support devices.

[0012] Further, to ensure that the upper refractory brick structure and the support plate are reliably engaged and coordinated, the support plate is preferably a composite steel plate structure with an F-shaped cross-section, which has a good bearing surface and connecting edge, facilitating positioning and embedding.

[0013] The present application can achieve the following technical features and significant properties through the above overall concept: Standard scaffolding and wooden springboards can be reused, with strong structural versatility and low construction costs. Line surveying and leveling technology are used to ensure the accurate installation position of the support plate, thereby improving the quality of masonry. The support structure can be quickly dismantled after the furnace roof construction is completed, facilitating the overall construction schedule. The support plate has an F-shaped cross-section structure, which helps the masonry to engage and resist slippage, thereby improving the overall stability of the refractory masonry. This systematically solves the construction problem of the suspended part of the coke oven support plate, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the installation position of the coke oven support plate according to an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of the P site in FIG; Figures 3-5 This is a schematic diagram of the step-by-step structure of the second embodiment of the present invention; Figure 6 not yet Figure 5 Enlarged view of the R part.

[0015] In the figure: 1 support plate, 2 scaffolding, 3 horizontal diagonal brace, 4 vertical diagonal brace, 5 scissor brace, 6 adjustable bracket, 7 top support adjustment frame, 8 wooden springboard, 9 anti-skid plate, 10 precision guide rail, 11 centerline positioning ruler, 12 limit clamp, 121 V-shaped limit slot, 122 self-locking buckle, 13 guide pin, 14 pre-built wall, 15 positioning hole, 16 self-locking clamp. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the embodiments and the accompanying drawings.

[0017] Example 1 Please refer to Figure 1 and Figure 2 The coke oven support plate installation method of the present invention comprises the following steps: a. Support bracket installation: Before construction, technical personnel will arrange the support frame and set up the grid according to the design drawings; The scaffolding material used is hot-dip galvanized steel pipe with a specification of 48mm outer diameter and 3.0mm wall thickness; A scissor brace is set between every two longitudinal support frames to improve the ability to resist horizontal loads; All nodes are connected using national standard double fasteners to ensure structural integrity; b. Working platform laying: Choose 30mm thick and 400mm wide pine wood planks and lay them horizontally on the main crossbars; Use a laser level to adjust the platform elevation point by point, and use wedge-shaped wooden blocks for fine-tuning; Check that the paving surface does not show any obvious warping, bending or loose connections; c. Support plate installation: Each support plate is numbered on the ground, carried to the platform and placed according to the center line; The length of the support plate used is 1.2m, and the cross section is F-shaped structure with limiting grooves on the edges; After installation, preliminary fixation is performed to prevent sliding or tilting during installation; d. Refractory masonry: The masonry workers construct from both sides to the middle, and high alumina bricks are used for the upper refractory; After each layer of masonry is completed, temporary support is performed to ensure that the masonry does not settle or shift; After 24 hours of maintenance, the next layer of work is performed after confirmation of stability by quality inspection; e. Remove the support: Use mechanical hoisting platform to remove the jump plate, steel pipe support and scissors support in turn; The support plate continues to be left in the masonry as a permanent structure without affecting subsequent operation.

[0018] Example 2 Please refer to Figures 3-6 , this embodiment provides a coke oven support plate 1 installation method suitable for high altitude or special construction environment, which further optimizes and improves the support structure, operation platform stability and support plate positioning method based on example 1, to ensure construction precision and safety performance.

[0019] The specific steps are as follows: a. Coke oven support plate support system erection The support system uses Φ48×3.0mm hot galvanized steel pipe to erect the scaffold 2, the longitudinal distance is 1.5m, the lateral distance is 0.9m, and the step distance is 1.5m. The whole frame body is provided with: transverse diagonal bracing 3; vertical diagonal bracing 4; Every two spans of scissors 5; all bearing points are provided with adjustable support 6 and top support adjustment frame to adjust the horizontal elevation of the frame body. The overall stability of the frame body structure is significantly improved, which can adapt to high altitude or complex working condition construction requirements.

[0020] b. Repetitive operation platform laying On the scaffold operation surface, first lay 30mm thick × 400mm wide wooden jump plate 8, then add 15mm thick high-strength non-slip plate 9 (such as fireproof clamping plate or steel grating plate) to form a double-layer composite jump plate platform.

[0021] After the platform is laid, adjust the overall elevation by laser level, and the elevation error is controlled within ±3mm to ensure the overall flatness and stability of the operation platform.

[0022] c. Self-locking quick guide positioning device To further improve the installation precision and efficiency of the support plate, the following self-locking quick guide positioning device is arranged on the jump plate platform: a precision guide rail 10 system is arranged on the surface of the jump plate platform along the longitudinal direction, and a center line positioning scale 11 is arranged in the guide rail; self-locking limiting clamps 12 are arranged at both ends and the middle of the guide rail, which include V-shaped limiting clamping grooves 121 and elastic self-locking buckles 122, and the support plate 1 is automatically clamped and locked after being placed; a guide pin 13 is arranged at one end of each support plate, which is inserted into a pre-positioning hole 15 in the pre-built wall body 14, and the other end is automatically fixed by a self-locking clamp 16; the placement process of the support plate 1 can be completed under the operation of a single person, avoiding the manual fine-tuning process, and the installation efficiency and precision are improved synchronously; the positioning device has error correction function, avoiding the problem of cumulative deviation of the support plate.

[0023] d. Upper refractory masonry When the installation of the support plate is completed and the positioning is firm, the upper refractory brick masonry is started. The masonry sequence is pushed from both sides to the center, and the flatness and perpendicularity are detected once every 200mm height is completed to ensure the overall masonry precision. The brick masonry adopts high-alumina refractory bricks, and is matched with a masonry cushion layer and a temporary supporting mechanism to avoid initial settlement.

[0024] e. Temporary safety protection baffle A metal or composite material baffle higher than 1200mm is additionally arranged around the support platform to form a construction edge protection barrier to prevent the falling of construction personnel or the sliding of tools and comprehensively improve the construction safety level.

[0025] f. Scaffolding system disassembly After the upper masonry is stably maintained for 24 hours and is confirmed by quality inspection, the composite jump plate, the quick positioning clamp, the support frame system and the auxiliary reinforcing member are sequentially disassembled. The support plate is retained in the masonry as a permanent structure without affecting the normal use of the subsequent coke oven. The above embodiments strengthen the stability, positioning accuracy, applicability and safety of the platform, improve the rigidity and anti-skid performance of the scaffolding platform through the composite jump plate and the inclined bracing system, improve the consistency of the placement of the support plate through the guide rail type limiting clamp instead of manual line lofting, are especially suitable for the construction scene of the blast furnace section or the coke oven which needs long-term cantilever support, and effectively reduce the safety hazards such as construction high-altitude falling and plate sliding through the additional baffle and guide piece.

[0026] The above embodiments are only used to illustrate the present application, and are not a limitation of the present application. Those skilled in the art can make various transformations or changes without departing from the spirit and scope of the present application. Therefore, all equivalent technical solutions should belong to the scope of the present application, which is defined by the claims.

Claims

1. A method for installing a coke oven support plate, characterized in that: The following steps are involved: a. Erection of support brackets for coke oven support plates; b. Laying a working platform on top of the support bracket; c. Position the support plates one by one on the work platform along the pre-determined center lines of the support plates; d. Laying refractory bricks on the upper part of the support plate; e. After the upper masonry is stabilized and maintained, the support bracket and the working platform are removed.

2. The method for installing a coke oven support plate according to claim 1, characterized in that: The supporting bracket is a scaffolding structure constructed of hot-dip galvanized steel pipes with an outer diameter of 48 mm and a wall thickness of 3.0 mm. The longitudinal spacing of the scaffolding is approximately 1.5 m, and the transverse spacing is approximately 0.9 to 1.0 m. All nodes are connected with national standard double fasteners. Transverse diagonal braces are added between the longitudinal brackets, and a set of scissors braces is set every two spans to improve overall stability.

3. The coke oven support plate installation method according to claim 1, characterized in that: A wooden plank with a thickness of about 30 mm and a width of about 400 mm is laid horizontally on the scaffolding working surface as a working platform; after the wooden plank is laid, a laser level and wooden wedges are used to adjust the platform elevation point by point to ensure that the working platform surface is flat and the elevation is consistent.

4. The coke oven support plate installation method according to claim 1, characterized in that: The support plate is a composite steel plate structure with an F-shaped cross section and a side edge with a limiting groove for embedding the support plate.

5. The coke oven support plate installation method according to claim 1, characterized in that: During the elevation adjustment of the working platform and the laying of refractory bricks, a laser level is used to calibrate the position of the platform and the support plate, so that the elevation deviation is controlled within ±3mm, thereby improving the positioning accuracy of the support plate.

6. The coke oven support plate installation method according to claim 1, characterized in that: At least one set of precision guide rails (10) is arranged longitudinally on the work platform, and a centerline scale (11) for positioning the support plate is provided on the guide rails; a limit clamp (12) is provided at both ends and the middle position of each guide rail, and the limit clamp includes a V-shaped limit groove (121) and an elastic self-locking buckle (122); when the support plate is placed on the platform, one end is embedded in the V-shaped groove of the guide rail and locked by the buckle, thereby achieving the initial positioning of the support plate.

7. The coke oven support plate installation method according to claim 6, characterized in that: The precision guide rail is engraved with a positioning scale corresponding to the pre-measured center line, which is used to accurately position and place the support plate.

8. The coke oven support plate installation method according to claim 6, characterized in that: One end of the support plate is inserted into a positioning hole (15) of the pre-built wall, and the other end is automatically locked by a self-locking clamp (16) fixed to the guide rail, wherein the self-locking clamp comprises a latch portion that can be inserted into the positioning hole and a locking portion that engages with the end of the support plate and is used to fix the end of the support plate.

9. The coke oven support plate installation method according to claim 1, characterized in that: Safety baffles with a height of not less than 1200mm are added around the working platform to form a construction guardrail to prevent construction workers or tools from falling and improve construction safety.

10. The coke oven support plate installation method according to claim 1, characterized in that: The support bracket is provided with horizontal diagonal braces and vertical diagonal braces, a set of scissors braces is set between every two spans, and adjustable brackets are provided at each bearing point to improve the overall stability of the support structure and adapt to construction requirements at high altitude or complex working conditions.

11. A self-locking quick guide positioning device for installing a coke oven support plate, characterized in that: The invention comprises at least one set of precision guide rails (10) extending longitudinally along a scaffolding springboard platform, wherein the guide rails are engraved with a support plate centerline positioning scale (11); a plurality of self-locking limit clamps (12) are respectively provided at both ends and the middle of the guide rails, each limit clamp comprising a V-shaped limit clamping groove (121) and an elastic self-locking buckle (122) for fixing one end of the support plate; and at least one self-locking clamp (16) is also provided on the guide rails, wherein the self-locking clamp comprises a latch portion capable of being inserted into a pre-built wall positioning hole (15) and a locking portion engaged with the end of the support plate for fixing the other end of the support plate.

12. The self-locking rapid guide positioning device according to claim 11, characterized in that: The latch portion of the self-locking clamp (16) can be inserted into the positioning hole (15) of the pre-built wall and automatically lock the end of the support plate after the support plate is placed, thereby cooperating with the limit clamp to achieve double-end positioning and fixation of the support plate.

13. The method for installing a coke oven support plate according to any one of claims 1 to 12, characterized in that: The method is applied to the masonry construction of refractory bricks on the roof of a coke oven.

Images