A cold-repair assembled annealing kiln top wall support plate and assembly method thereof

Abstract

The present invention discloses a cold-repaired assembled annealing kiln top wall support plate, comprising two kiln side walls and a top wall and a furnace bottom located at the upper and lower ends of the kiln side walls, respectively. The top wall, the furnace bottom, and the two kiln side walls form a kiln body, and multiple sections of the kiln body are sequentially connected to form an annealing kiln. The upper end of the interior of the annealing kiln is equipped with an insulation structure, and the insulation structure is fixedly mounted on the bottoms of the multiple top walls. The present invention provides a cold-repaired assembled annealing kiln top wall support plate and an assembly method thereof. The top wall support plate is replaced within the kiln body, that is, a new support plate is re-covered on the basis of the previous top wall support plate, thereby shortening the construction period and reducing the difficulty of production. This method has a fast construction period, high safety, and does not occupy factory space.

Description

Technical Field

[0001] The invention belongs to the technical field of glass substrate processing and manufacturing, and in particular relates to a cold-repaired assembled annealing furnace top wall support plate and an assembly method thereof. Background Art

[0002] The annealing kiln shell is assembled from two side walls, a kiln roof, and a kiln floor. The annealing kiln shell's insulation structure consists of a layer of insulation cotton installed inside the shell. This insulation cotton is pressed into the shell by a cover plate, which is then fixed to the shell with bolts. The side walls and top of the prefabricated annealing kiln are segmented, with the insulation cotton pressed tightly by a single piece laid flat. During installation, the bottom frame is first installed, followed by the side walls, forming a U-shaped assembly. Finally, the top frame is placed on top, and the entire assembly is completed to form the kiln body. Multiple sections of the kiln body are connected to form the annealing kiln.

[0003] After the annealing furnace has been in use for one or more kiln cycles, the cover plate on the top wall, that is, the top wall support plate, is exposed to high temperature for a long time. Chromium carbides will precipitate at the austenite grain boundaries. As a result, the chromium layer near the grain boundaries is completely exhausted. The top wall support plate is very susceptible to corrosion and localized corrosion. If stress exists, it will lead to brittle fracture.

[0004] Theoretically, the top wall supports of an annealing furnace can expand freely when heated. However, there is expansion resistance between the supports, between the insulation, and between the supports and the hanging points. In addition, they must withstand the compressive stress of the top insulation. If the annealing furnace continues to be used after multiple kiln cycles, the possibility of the top wall supports breaking increases significantly.

[0005] On-site measurements showed that a randomly struck hammer on a pallet with an intact surface immediately caused it to break, with the cracks radiating in a spider-web pattern. This indicated that the mechanical properties of the plate had been completely lost after multiple cycles of high-temperature baking. The weight of the insulation cotton on the top of the kiln body was entirely borne by the top wall pallet and the hanger. If these were not replaced in time, major accidents such as pallet breakage and falling insulation cotton could not be handled online after production began, necessitating shutdowns for maintenance, severely impacting production.

[0006] Since the top wall of an assembled annealing furnace is directly mounted on a U-shaped assembly, there are two traditional ways to replace the top wall support plate. One method is to open the connection between the top wall and the two side walls, then lift out the top wall as a whole, flip it 180 degrees, and remove and replace the top wall support plate. During this process, the insulation cotton in the removed part also needs to be replaced. This replacement method will also damage some bolts, which also need to be replaced. In addition, this assembly method requires the assistance of a crane and a crane. The other method is to dismantle the single-section kiln body, lift it out using a crane, reinforce the kiln body, and then flip the kiln body 180 degrees so that the top wall faces downward to replace the top wall support plate. Both methods not only require sufficient space for replacement, resulting in a large space occupation, but are also labor-intensive and time-consuming, with high difficulty, high risk, high cost, and long construction period. Summary of the Invention

[0007] The object of the present invention is to overcome the above-mentioned problems existing in the prior art and provide a cold-repair assembled annealing kiln top wall support plate and an assembly method thereof, wherein the top wall support plate is replaced inside the kiln body, that is, a new support plate is re-covered on the basis of the previous top wall support plate, thereby shortening the construction period and reducing the production difficulty; this method has a fast construction period, high safety, and does not occupy factory space.

[0008] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0009] In a first aspect, the present invention provides a cold-repair assembled annealing kiln top wall support plate, comprising two kiln side walls and a top wall and a furnace bottom located at the upper and lower ends of the kiln side walls, respectively. The top wall, the furnace bottom, and the two kiln side walls form a kiln body, and multiple sections of the kiln body are sequentially connected to form an annealing kiln.

[0010] The upper end of the interior of the annealing furnace is equipped with a heat-insulating structure, and the heat-insulating structure is fixedly installed on the bottom of the plurality of top walls;

[0011] The thermal insulation structure includes multiple thermal insulation cotton layers and a first support frame tightly attached to the bottom of the multiple thermal insulation cotton layers. The thermal insulation cotton layers are tightly attached to the bottom of the top wall through the first support frame supported by the first support frame below. A second support frame is provided below the first support frame.

[0012] The first support plate rack includes a plurality of first support plate groups arranged in parallel, a first inter-section gusset plate is provided between two adjacent first support plate groups, and each first support plate group is cooperatively installed in the kiln body;

[0013] The first support plate group includes a plurality of first support plates arranged in parallel, a first U-shaped gusset plate is provided between two adjacent first support plates, and the two adjacent first support plates are connected and fixed by the first U-shaped gusset plate;

[0014] Two first support plates close to each other on two adjacent first support plate groups are connected and fixed by a first internode buckle plate;

[0015] The second support plate rack includes a plurality of second support plate groups arranged in parallel, a second inter-section gusset is provided between two adjacent second support plate groups, and each second support plate group is cooperatively installed in the kiln body;

[0016] The second support plate group includes a plurality of second support plates arranged in parallel, a second U-shaped gusset plate is provided between two adjacent second support plates, and the two adjacent second support plates are connected and fixed by the second U-shaped gusset plate;

[0017] The two second support plates on two adjacent second support plate groups that are close to each other are connected and fixed by a second internode buckle plate.

[0018] Furthermore, both ends of the first support plate are provided with first bending portions that make the first support plate U-shaped, and the two adjacent first bending portions of the two adjacent first support plates are tightly arranged in the open end of the first U-shaped gusset plate;

[0019] The two adjacent first bending portions of the two first supporting plates that are close to each other on the two adjacent first supporting plate groups are tightly arranged in the open end of the first intersegment buckle plate.

[0020] Furthermore, the bottoms of the open ends of the first U-shaped gusset plate and the first intersegment gusset plate are respectively provided with a first assembly hole and a second assembly hole, and the first assembly hole and the second assembly hole are both provided with a screw rod, and the screw rod is fixedly installed at the upper end of the interior of the annealing furnace;

[0021] The outside of the screw rod is sleeved with a first nut, which is tightly attached to the closed end of the first U-shaped gusset plate. The first U-shaped gusset plate is pressed and fixed to the outside of the thermal insulation cotton layer by the first nut.

[0022] Furthermore, a third assembly hole that matches the screw rod is formed at the bottom of the second intersegment gusset plate and the bottom of the open end of the second U-shaped gusset plate.

[0023] Furthermore, both ends of the second support plate are provided with a second bending portion that makes the second support plate U-shaped, and the two adjacent second bending portions of two adjacent second support plates are tightly arranged in the open end of the second U-shaped gusset plate;

[0024] The two adjacent second bending portions of the two second supporting plates that are close to each other on the two adjacent second supporting plate groups are tightly arranged in the open end of the second intersegment buckle plate.

[0025] Furthermore, a second nut is sleeved on the outside of the screw rod, and the second nut is tightly attached to the closed end of the second U-shaped buckle plate.

[0026] Furthermore, reinforcing angle steels are installed on both the first supporting plate and the second supporting plate.

[0027] Furthermore, the gap between the first support frame and the second support frame is filled with thermal insulation cotton.

[0028] In a second aspect, the present invention further provides a method for assembling a top wall support plate of a cold-repair assembled annealing lehr, the assembly method comprising the following steps:

[0029] S1: Pretreatment of the internal environment of the annealing furnace

[0030] Clean the floor of the furnace, lay a layer of plastic mat on the floor, put protective covers on the outside of the air ducts inside the furnace body, and remove the reinforcing angle steel on the first support plate;

[0031] S2: Prepare lifting equipment

[0032] A plurality of extension sleeves are arranged on the plastic pad, a jack is installed on the extension sleeve, and a flexible support plate is installed at the output end of the jack;

[0033] S3: Reserve the second bracket installation position

[0034] Start the jack and lift the first U-shaped gusset plate to a height of 20-30 mm. After the lifting is completed, use the first nut to fix the position of the first U-shaped gusset plate;

[0035] S4: Pre-installed second intersegment plate

[0036] Buckle one of the second bent portions on the second support plate into the open end of the second intersegment gusset plate, lift the second intersegment gusset plate using a jack, and fit the second intersegment gusset plate onto the outside of the screw rod on the first intersegment gusset plate at the corresponding position. Fill the gap between the second intersegment gusset plate and the first intersegment gusset plate with thermal insulation cotton, and use a second nut to preliminarily define the position of the second intersegment gusset plate.

[0037] S5: Laying the second pallet

[0038] Buckle the other second bent portion of the second support plate in step S into the open end of the second U-shaped gusset plate, then buckle one of the second bent portions on the other second support plate into the open end of the second U-shaped gusset plate, sleeve the second U-shaped gusset plate onto the outside of the screw rod at the corresponding position, fill the gap between the second U-shaped gusset plate and the first U-shaped gusset plate with thermal insulation cotton, use the second nut to preliminarily define the position of the second U-shaped gusset plate, and repeat the above steps until the bottom of the top wall of a kiln body is laid;

[0039] S6: Laying the second pallet group

[0040] Repeat steps S4-S5 until all the kiln bodies are laid out, completing the laying of the top wall support plates on the annealing kiln;

[0041] S7: Fixed top and wall support

[0042] Tighten all the second intersegment gussets and the second nuts under the second U-shaped gussets, and use an automatic welding robot to weld and fix all the second nuts to the screw rods;

[0043] S8: Strengthen the second pallet rack

[0044] Weld the reinforcing angle steel on the second support plate.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] 1. The present invention provides a cold-repair assembled annealing kiln top wall support plate, which can be replaced in the kiln body, that is, a new support plate is re-covered on the basis of the previous top wall support plate, thereby shortening the construction period and reducing the manufacturing difficulty.

[0047] 2. The present invention also provides a method for assembling a top wall support plate of a cold-repair assembled annealing kiln. This method has a fast construction period, high safety, and does not occupy factory space.

[0048] 3. The present invention provides a cold-repair assembled annealing furnace top wall support plate and an assembly method thereof, which makes subsequent replacement of the top wall support plate convenient and simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0050] Figure 1 This is a schematic structural diagram of the cold-repair assembled annealing kiln provided by the present invention;

[0051] Figure 2 This is a schematic diagram of the installation of the first and second support plates provided by the present invention;

[0052] Figure 3 The present invention provides a flowchart of a method for assembling a top wall support plate of a cold-repair assembled annealing kiln. DETAILED DESCRIPTION

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] Example 1

[0056] like Figures 1 to 2 As shown, a cold-repair assembled annealing kiln top wall support plate includes two kiln side walls 1 and a top wall 2 and a furnace bottom 3 located at the upper and lower ends of the kiln side walls 1, respectively. The top wall 2, the furnace bottom 3 and the two kiln side walls 1 form a kiln body 10. Multiple sections of the kiln body 10 are sequentially connected to form an annealing kiln.

[0057] The upper end of the interior of the annealing furnace is equipped with an insulation structure 4, which is fixedly installed on the bottom of multiple top walls 2. Since multiple sections of the furnace body 10 are sequentially connected to form the annealing furnace, there are multiple top walls 2 in the annealing furnace, and the insulation structure 4 is fixedly installed on the bottom of multiple top walls 2;

[0058] The insulation structure 4 includes multiple insulation cotton layers 41 and a first support plate frame 42 that is tightly attached to the bottom of the multiple insulation cotton layers 41. The insulation cotton layers 41 are tightly attached to the bottom of the top wall 2 through the first support plate frame 42 that supports them. A second support plate frame 5 is provided below the first support plate frame 42.

[0059] The gap between the two adjacent kiln bodies 10 is filled with thermal insulation cotton;

[0060] The first support plate rack 42 includes a plurality of first support plate groups 20 arranged in parallel, with a first inter-section gusset 30 provided between two adjacent first support plate groups 20, and each first support plate group 20 is cooperatively installed in the kiln body 10;

[0061] Since multiple sections of the kiln body 10 are sequentially connected to form an annealing kiln, a first support plate group 20 is provided below the top wall 2 of each kiln body 10 to facilitate actual installation;

[0062] The first support plate group 20 includes a plurality of first support plates 43 arranged in parallel, and a first U-shaped gusset plate 44 is provided between two adjacent first support plates 43. The first U-shaped gusset plate 44 connects and fixes the two adjacent first support plates 43.

[0063] The two first support plates 43 on the two adjacent first support plate groups 20 are connected and fixed by the first inter-section pinch plate 30, that is, the connection part between the two top walls 2 is connected and fixed by the first inter-section pinch plate 30;

[0064] Both ends of the first support plate 43 are provided with first bending portions 431 that make the first support plate 43 U-shaped. The two adjacent first bending portions 431 of two adjacent first support plates 43 are tightly disposed in the open end of the first U-shaped gusset plate 44.

[0065] The two adjacent first bending portions 431 of the two adjacent first support plates 43 on the two adjacent first support plate groups 20 are tightly disposed in the open end of the first intersegment pinch plate 30;

[0066] Since the annealing furnace is composed of a plurality of kiln bodies 10 connected together, a plurality of first supporting plates 43 are provided on the top wall of each kiln body 10. Two adjacent first supporting plates 43 on the top wall of the kiln body 10 are connected by a first U-shaped gusset plate 44, and two adjacent first supporting plates 43 between two adjacent furnace bodies are connected by a first inter-section gusset plate 30.

[0067] The first U-shaped gusset plate 44 and the first inter-section gusset plate 30 are respectively provided with a first assembly hole and a second assembly hole at the bottom of the open end. The first assembly hole and the second assembly hole are both provided with a screw rod 442, which is fixedly installed at the upper end of the interior of the annealing furnace.

[0068] The outer portion of the screw rod 442 is sleeved with a first nut 443 , which is tightly attached to the closed end of the first U-shaped gusset plate 44 . The first U-shaped gusset plate 44 is pressed and fixed to the outer portion of the thermal insulation layer 41 by the first nut 443 .

[0069] The second support plate rack 5 includes a plurality of second support plate groups 40 arranged in parallel, with a second inter-section gusset 50 provided between two adjacent second support plate groups 40, and each second support plate group 40 is cooperatively installed in the kiln body 10;

[0070] The second support plate group 40 is cooperatively arranged below the first support plate group 20;

[0071] The first intersegment gusset plate 30 is located within the open end of the second intersegment gusset plate 50;

[0072] The second support plate group 40 includes a plurality of second support plates 51 arranged in parallel, and a second U-shaped gusset plate 52 is provided between two adjacent second support plates 51. The second U-shaped gusset plate 52 connects and fixes the two adjacent second support plates 51.

[0073] The first U-shaped gusset plate 44 is located within the open end of the second U-shaped gusset plate 52;

[0074] The two second support plates 51 on two adjacent second support plate groups 40 are connected and fixed by a second inter-section pinch plate 50;

[0075] The bottom of the second intersegment gusset plate 50 and the bottom of the open end of the second U-shaped gusset plate 52 are both provided with a third assembly hole that matches the screw rod 442;

[0076] Both ends of the second support plate 51 are provided with a second bent portion 511 that makes the second support plate 51 U-shaped. The two adjacent second bent portions 511 of two adjacent second support plates 51 are tightly arranged in the open end of the second U-shaped gusset plate 52;

[0077] The two adjacent second support plates 51 on the two adjacent second support plate groups 40 are closely disposed in the open end of the second intersegment pinch plate 50;

[0078] The outer portion of the screw rod 442 is also sleeved with a second nut 54 , which is tightly attached to the closed end of the second U-shaped gusset plate 52 ;

[0079] The second nut 54 is located below the first nut 443;

[0080] Reinforced angle steels are installed on both the first support plate 43 and the second support plate 51;

[0081] The gap between the first support plate frame 42 and the second support plate frame 5 is filled with thermal insulation cotton;

[0082] The present embodiment provides a cold-repair assembled annealing furnace top wall support plate. Through the arrangement of the present embodiment, it is convenient to install the second support plate frame 5 below the first support plate frame 42, thereby completing the update of the top wall support plate. This arrangement saves time and effort in operation. When the top wall support plate is replaced subsequently, the disassembly and assembly are simple, and the replacement of the top wall support plate is convenient. This solves the problems in the prior art of the long replacement cycle, large space occupied, and labor-intensive replacement of the top wall support plate of the glass return furnace.

[0083] Example 2

[0084] like Figure 3 As shown, this embodiment provides a method for assembling a top wall support plate of a cold-repair assembled annealing kiln, the assembly method comprising the following steps:

[0085] S1: Pretreatment of the internal environment of the annealing furnace

[0086] Clean the floor of the annealing furnace, that is, the floors of the multiple furnace bottoms 3. After cleaning, lay a layer of plastic mat on the floor of the furnace bottom 3. Put protective covers on the outside of the air ducts inside the multiple kiln bodies 10 to prevent damage to the air ducts during the installation of the support plates. After the installation of the protective covers is completed, remove the reinforcing angle steel on the first support plate 43 to facilitate the subsequent installation of the second support plate frame 5 below the first support plate frame 42.

[0087] S2: Prepare lifting equipment

[0088] A plurality of extension sleeves are arranged on the plastic pad, a jack is installed on the extension sleeve, and a flexible support plate is installed at the output end of the jack. The plurality of flexible support plates can form a support surface. In actual construction, the pallet can be lifted and protected to prevent deformation of the pallet during the lifting and compacting process.

[0089] S3: Reserve the second bracket installation position

[0090] Start the jack to lift the first U-shaped gusset plate 44 to a height of 20-30 mm. After the lifting is completed, use the first nut 443 to fix the position of the first U-shaped gusset plate 44.

[0091] During this process, the first U-shaped gusset plate 44 is lifted, thereby reserving an installation position on the screw rod 442 to facilitate the subsequent installation of the second support plate frame 5;

[0092] S4: Pre-installed second intersegment plate

[0093] One of the second bent portions 511 on the second support plate 51 is buckled into the open end of the second intersegment gusset plate 50. The second intersegment gusset plate 50 is raised and lowered by a jack so that the second intersegment gusset plate 50 is sleeved onto the outside of the screw rod 442 on the first intersegment gusset plate 30 at the corresponding position. The gap between the second intersegment gusset plate 50 and the first intersegment gusset plate 30 is filled with thermal insulation cotton, and the position of the second intersegment gusset plate 50 is preliminarily defined using a second nut 54.

[0094] S5: Laying the second pallet

[0095] The other second bent portion 511 of the second support plate 51 in step S4 is buckled into the open end of the second U-shaped gusset plate 52, and one of the second bent portions 511 on the other second support plate 51 is buckled into the open end of the second U-shaped gusset plate 52. The second U-shaped gusset plate 52 is sleeved onto the outside of the screw rod 442 at the corresponding position. The gap between the second U-shaped gusset plate 52 and the first U-shaped gusset plate 44 is filled with thermal insulation cotton. The second nut 54 is used to preliminarily define the position of the second U-shaped gusset plate 52. The above steps are repeated until the bottom of the top wall 2 of a kiln body 10 is laid.

[0096] S6: Laying the second pallet group

[0097] Repeat steps S4-S5 until all the kiln bodies 10 are laid, completing the laying of the top wall support plates of the annealing kiln;

[0098] S7: Fixed top and wall support

[0099] Tighten all the second intersegment gussets 50 and the second nuts 54 under the second U-shaped gussets 52, and use an automatic welding robot to weld all the second nuts 54 to the screw rod 442;

[0100] S8: Strengthen the second pallet rack

[0101] Reinforcing angle steel is welded to the second supporting plate 51 .

[0102] The present embodiment provides an assembly method for a cold-repair assembled annealing kiln top wall support plate. The design of the assembly method provides a new idea for replacing the top wall support plate on the annealing kiln. Compared with the traditional method of replacing the top wall support plate on the annealing kiln, the assembly method is more convenient and quick, does not occupy factory space, and can be completed inside the annealing kiln. Since a new support plate is re-covered on the basis of the previous top wall support plate, the support of the double-layer support plate can better withstand the compressive stress of the top insulation cotton. Moreover, this assembly method can effectively shorten the construction period, not only reduces the difficulty of operation, but also has higher safety.

[0103] The present invention provides a cold-repair assembled annealing kiln top wall support plate and an assembly method thereof. A new support plate is re-covered on the basis of the previous top wall support plate, which shortens the construction period, reduces the manufacturing difficulty, has high safety, does not occupy factory space, and is convenient for subsequent replacement of the top wall support plate.

[0104] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0105] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A cold-repair assembled annealing furnace top wall support plate, characterized by: The invention comprises two kiln side walls (1) and a top wall (2) and a furnace bottom (3) respectively located at the upper end and the lower end of the kiln side walls (1); the top wall (2), the furnace bottom (3) and the two kiln side walls (1) form a kiln body (10); and multiple sections of the kiln body (10) are sequentially connected to form an annealing kiln; The upper end of the interior of the annealing furnace is equipped with a heat-insulating structure (4), and the heat-insulating structure (4) is fixedly mounted on the bottom of the plurality of top walls (2); The thermal insulation structure (4) comprises a plurality of thermal insulation cotton layers (41) and a first support plate frame (42) tightly fitted below the plurality of thermal insulation cotton layers (41); the thermal insulation cotton layers (41) are tightly fitted to the bottom of the top wall (2) via the first support plate frame (42) supporting the thermal insulation cotton layers (41); a second support plate frame (5) is provided below the first support plate frame (42); The first support plate rack (42) includes a plurality of first support plate groups (20) arranged in parallel, a first inter-section buckle plate (30) is provided between two adjacent first support plate groups (20), and each first support plate group (20) is cooperatively installed in the kiln body (10); The first support plate group (20) comprises a plurality of first support plates (43) arranged in parallel, a first U-shaped gusset plate (44) is provided between two adjacent first support plates (43), and the two adjacent first support plates (43) are connected and fixed by the first U-shaped gusset plate (44); Two first support plates (43) on two adjacent first support plate groups (20) are connected and fixed via a first inter-section buckle plate (30); The second support plate rack (5) comprises a plurality of second support plate groups (40) arranged in parallel, a second inter-section buckle plate (50) is provided between two adjacent second support plate groups (40), and each second support plate group (40) is cooperatively installed in the kiln body (10); The second support plate group (40) comprises a plurality of second support plates (51) arranged in parallel, a second U-shaped gusset plate (52) is provided between two adjacent second support plates (51), and the two adjacent second support plates (51) are connected and fixed by the second U-shaped gusset plate (52); Two second support plates (51) on two adjacent second support plate groups (40) are connected and fixed via a second inter-section buckle plate (50); The first U-shaped gusset plate (44) and the first intersegment gusset plate (30) are respectively provided with a first assembly hole and a second assembly hole at the bottom of the open end, and the first assembly hole and the second assembly hole are both provided with a screw rod (442), and the screw rod (442) is fixedly installed at the upper end inside the annealing furnace; The outer portion of the screw rod (442) is sleeved with a first nut (443), the first nut (443) being tightly attached to the closed end of the first U-shaped gusset plate (44), and the first U-shaped gusset plate (44) being pressed and fixed to the outer portion of the thermal insulation cotton layer (41) by the first nut (443); A second nut (54) is also sleeved on the outside of the screw rod (442), and the second nut (54) is tightly attached to the closed end of the second U-shaped buckle plate (52).

2. The cold-repair assembled annealing furnace top wall support plate according to claim 1, characterized in that: Both ends of the first support plate (43) are provided with first bending portions (431) that make the first support plate (43) U-shaped, and the two adjacent first bending portions (431) of the two adjacent first support plates (43) are tightly arranged in the open end of the first U-shaped buckle plate (44); Two adjacent first bending portions (431) in two mutually adjacent first supporting plates (43) on two adjacent first supporting plate groups (20) are tightly arranged in the open end of the first intersegment buckle plate (30).

3. The cold-repair assembled annealing furnace top wall support plate according to claim 1, characterized in that: The bottom of the second intersegment gusset plate (50) and the bottom of the open end of the second U-shaped gusset plate (52) are both provided with a third assembly hole that matches the screw rod (442).

4. The cold-repair assembled annealing furnace top wall support plate according to claim 1, characterized in that: Both ends of the second support plate (51) are provided with second bending portions (511) that make the second support plate (51) U-shaped, and the two adjacent second bending portions (511) of two adjacent second support plates (51) are tightly arranged in the open end of the second U-shaped buckle plate (52); Two adjacent second bending portions (511) in two second support plates (51) adjacent to each other on two adjacent second support plate groups (40) are tightly arranged in the open end of the second intersegment buckle plate (50).

5. The cold-repair assembled annealing furnace top wall support plate according to claim 1, characterized in that: Reinforced angle steels are installed on both the first supporting plate (43) and the second supporting plate (51).

6. The cold-repair assembled annealing furnace top wall support plate according to claim 1, characterized in that: The gap between the first support plate frame (42) and the second support plate frame (5) is filled with thermal insulation cotton.

7. A method for assembling a top wall support plate of a cold-repair assembled annealing lehr according to any one of claims 1 to 6, characterized in that: The assembly method comprises the following steps: S1: Pretreatment of the internal environment of the annealing furnace Clean the floor of the furnace bottom (3), and after cleaning, lay a layer of plastic mat on the floor of the furnace bottom (3), put protective covers on the outside of the air ducts inside the multiple kiln bodies (10), and remove the reinforcing angle steel on the first support plate (43); S2: Prepare lifting equipment A plurality of extension sleeves are arranged on the plastic pad, a jack is installed on the extension sleeve, and a flexible support plate is installed at the output end of the jack; S3: Reserve the second bracket installation position Start the jack to lift the first U-shaped gusset plate (44) to a height of 20-30 mm. After the lifting is completed, use the first nut (443) to fix the position of the first U-shaped gusset plate (44); S4: Pre-installed second intersegment plate One of the second bent portions (511) on the second support plate (51) is buckled into the open end of the second intersegment gusset plate (50), and the second intersegment gusset plate (50) is lifted and lowered by a jack so that the second intersegment gusset plate (50) is sleeved onto the outside of the screw rod (442) on the first intersegment gusset plate (30) at the corresponding position, and the gap between the second intersegment gusset plate (50) and the first intersegment gusset plate (30) is filled with thermal insulation cotton, and the position of the second intersegment gusset plate (50) is preliminarily limited using a second nut (54); S5: Laying the second pallet The other second bent portion (511) of the second support plate (51) in step S4 is buckled into the open end of the second U-shaped buckle plate (52), and one of the second bent portions (511) on the other second support plate (51) is buckled into the open end of the second U-shaped buckle plate (52), and the second U-shaped buckle plate (52) is sleeved onto the outside of the screw rod (442) at the corresponding position. The gap between the second U-shaped buckle plate (52) and the first U-shaped buckle plate (44) is filled with thermal insulation cotton, and the position of the second U-shaped buckle plate (52) is preliminarily defined using the second nut (54). The above steps are repeated until the bottom of the top wall (2) of a kiln body (10) is laid. S6: Laying the second pallet group Repeat steps S4-S5 until all the kiln bodies (10) are laid, completing the laying of the top wall support plates of the annealing kiln; S7: Fixed top and wall support Tighten all the second intersegment gussets (50) and the second nuts (54) below the second U-shaped gussets (52), and use an automatic welding robot to weld and fix all the second nuts (54) to the screw rod (442); S8: Strengthen the second pallet rack A reinforcing angle steel is welded on the second supporting plate (51).

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