Furnace door plate structure for industrial furnace and furnace door plate counterweight hanging device

Abstract

The utility model discloses a furnace door plate structure and a furnace door plate counterweight hanging device for an industrial furnace, and relates to the field of heavy industrial furnaces, a square metal shell of a furnace door plate comprises a shell frame and an iron plate wrapping the outer side of the shell frame, and the shell frame comprises a square frame formed by connecting steel beams end to end through mortise and tenon joint structures. Cross beams and vertical beams are arranged on the inner side of the square frame, and the shell frame is filled with fiber modules; bearing seats are arranged on a portal frame of the counterweight hanging device from left to right, a transverse shaft is sleeved on the bearing seats, a chain wheel is arranged on the transverse shaft, one end of a chain on the chain wheel is connected with the upper end of the furnace door plate, and the other end is connected with a counterweight body through the chain wheel; one end of the transverse shaft penetrates through the bearing seat and then is connected with a motor spindle fixed on the left or right of the portal frame; the connecting structures of the metal square shell of the furnace door and the counterweight hanging device are mainly mortise and tenon joint structures and bolt connecting structures, so that the firmness of the furnace door plate is guaranteed, and the installation and the later maintenance during the construction of the industrial furnace are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of heavy industry industrial furnaces, in particular to a furnace door panel structure for an industrial furnace and a furnace door panel counterweight hanging device. Background Art

[0002] Industrial furnaces are thermal equipment used in industrial production, mainly used for thermal processing processes such as smelting, melting, roasting (calcining), heating, distillation, gasification, etc. Industrial furnaces include: smelting furnaces, melting furnaces, iron ore sintering furnaces, heating furnaces, heat treatment furnaces, drying furnaces, non-metallic roasting (calcining) furnaces, lime kilns, ceramic kilns, coking furnaces and other furnaces; industrial furnaces are basically hot work, so the thermal insulation performance of the furnace door and the furnace door panel is very important. Take the coking furnace as an example:

[0003] According to the report of Anshan Iron and Steel Research Institute on the overall heat loss of coke oven, the heat loss of coke oven door panel can reach 3.48%, and the insulation effect of the door panel is a key factor affecting the quality of coke. The working system of clean heat recovery coke oven has the following characteristics: 1. During the coking process, coke needs to be pushed and discharged repeatedly, and the temperature of the door panel fluctuates violently between 30℃ and 1200℃. This feature requires the door panel lining to have excellent thermal shock resistance and be able to resist the internal stress caused by the huge temperature difference. 2. The composition of furnace gas is relatively complex, mixed with impurities such as coal tar, carbon powder, and graphite. This feature requires the door panel lining to have excellent corrosion resistance and be able to resist erosion and wear in complex environments. 3. The carbonization chamber of the coke oven is a micro-negative pressure operation, and the air supply needs to be strictly controlled to reduce the burning rate. This feature requires the door panel lining to maintain excellent sealing and effectively prevent air from leaking into the carbonization chamber.

[0004] The lining of the door panels of early industrial furnaces was mainly made of traditional clay bricks. This material is cheap and has high strength, but its thermal conductivity of nearly 1.28W / m·K makes its insulation effect poor. When the temperature rises, the thermal expansion is obvious. It is easy to break and be destroyed under the erosion and wear of the furnace gas. At the same time, the outer metal frame welded by the furnace door panel itself is easy to deform under the thermal shock environment, which causes considerable difficulties for maintenance. Therefore, after investigation and summary: 1. The volume density and thermal conductivity of the traditional furnace door panel lining structure are large, resulting in a large overall weight of the furnace door panel. The furnace door insulation lining with castable structure must go through the furnace drying process after the lining is poured on site. The construction period is long, the furnace drying technology requirements are high, and the installation and construction are inconvenient. . 2. The metal frame material welded by the furnace lining and the outer periphery of the furnace door panel has poor thermal shock resistance and is prone to cracks during use. Local damage will affect the overall performance of the furnace door panel and the furnace door panel castable insulation lining, resulting in a short service life and a high overall production and operation cost for users. Utility Model Content

[0005] The utility model aims to provide a furnace door panel structure for an industrial furnace and a furnace door panel counterweight hanging device to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A furnace door panel structure for an industrial furnace comprises a furnace door opening provided at the middle of the front end of a furnace body, the furnace door opening is a square opening in the middle of the front end of the furnace body, and a furnace door frame is built on the inner wall of the square opening; the furnace door frame is a square frame composed of a horizontal beam, a furnace door sill and two columns, and both are cast entities of unshaped refractory materials, the lower end of the furnace door sill is closely attached to the upper end of the square opening of the furnace door, the upper end of the horizontal beam is closely attached to the lower end of the square opening of the furnace door itself, two columns are located between the horizontal beam and the furnace door sill, the upper ends of the two columns are respectively fixedly connected to the left and right sides of the lower end of the horizontal beam, and the lower ends of the two columns are fixedly connected to the left and right sides of the lower end of the horizontal beam. They are respectively fixedly connected to the left and right sides of the upper end of the furnace door sill, and the outer sides of the two columns are tightly attached to the inner walls of the left and right sides of the square opening of the furnace door itself; on the front end faces of the left and right columns of the furnace door frame itself, steel slide rails are provided along the up and down directions, and the arc-shaped end faces of the upper ends of the steel slide rails are matched with the U-shaped grooves provided on the wheel surfaces of the steel wheels installed on the steel wheel brackets on the left and right sides of the furnace door plate along the circumferential direction; wherein, the furnace door plate is a metal square shell, and hooks are provided on the left and right sides of the upper end face of the metal square shell, and the hooks are connected to the sprockets on the gantry frame of the hanging device itself located in front of the upper end of the furnace body through chains; The rear end of the metal square shell facing the furnace door frame is set as an opening, the metal square shell includes a shell frame and an iron plate covered on the outside of the shell frame, the shell frame includes an upper steel beam, a lower steel beam, a left steel beam, and a right steel beam connected to each other end to end through a mortise and tenon structure to form a square frame, a horizontal beam and a vertical beam are arranged on the inside of the square frame, the left and right ends of the horizontal beam are respectively fixedly connected to the upper inner side of the left steel beam of the square frame itself and the upper inner side of the right steel beam of the square frame itself through the mortise and tenon structure, the two ends of the vertical beam are respectively fixedly connected to the upper inner side of the upper steel beam of the square frame itself and the upper inner side of the lower steel beam through the mortise and tenon structure, at the same time, the middle part of the horizontal beam and the middle part of the vertical beam are vertically intersected by the mortise and tenon structure; the front end faces of the horizontal beam and the vertical beam are flush with the front end face of the square frame, and the iron plate covered on the outside of the shell frame includes the square frame The upper side of the upper steel beam, the lower side of the lower steel beam, the left side of the left steel beam, and the right side of the right steel beam of the frame itself are iron plates fixedly connected by bolt structures respectively; the front end of the upper steel beam, the front end of the lower steel beam, the front end of the left steel beam, the front end of the right steel beam, and the front end of the vertical beam and the front end of the cross beam in the square frame are iron plates fixedly connected by bolt structures, wherein the edge of the iron plate located at the front end of the square frame and the cross beam and the vertical beam is tightly attached to the upper inner side of the iron plate located on the outer side of the square frame; the inner side of the square frame of the shell frame itself is filled with high-temperature resistant fiber blankets and fiber modules, and the high-temperature resistant fiber blankets and fiber modules are anchored and connected to the inner side of the iron plates of the square frame, cross beams, vertical beams and the front end of the square frame, cross beams and vertical beams through anchor structures; the outer sides of the iron plates on the left and right sides of the square frame of the metal square shell of the furnace door panel itself are fixedly connected to one side of the steel wheel bracket by bolt structures.

[0008] The square frame is a rectangular frame structure formed by connecting the upper steel beam, the lower steel beam, the left steel beam and the right steel beam with each other through mortise and tenon structures, wherein the upper steel beam is the same size as the lower steel beam, and the left steel beam is the same size as the right steel beam; tenons are arranged on the front and rear sides of the left and right end faces of the upper and lower ends of the upper and lower ends of the upper and lower ends of the lower steel beam, and tenons are inserted into the tenons, and the end faces of the tenons and the two sides of the tenons are tightly attached to the bottom faces of the tenons and the two sides of the bottom faces of the tenons; through grooves are arranged in the middle of the left and right end faces of the upper and lower ends of the upper and lower ends of the upper and lower ends of the lower steel beam, and through grooves are arranged in the middle of the right side of the left steel beam and the middle of the left side of the right steel beam. The width of the through grooves of the upper and lower steel beams in the front-to-back direction is the same as the width of the through grooves that pass through the middle right side of the upper and lower ends of the left steel beam and the middle left side of the upper and lower ends of the right steel beam. The through grooves in the middle right side of the upper and lower ends of the left steel beam and the through grooves in the middle left side of the upper and lower ends of the right steel beam are both longer in the up-down direction than the through grooves at the left and right ends of the upper and lower steel beams. The length of the through groove of the vertical beam itself above the left-right central axis of the horizontal beam itself is equal to the length of the through groove of the vertical beam below the left-right central axis of the horizontal beam; the upper end of a steel plate is located in the through groove of the upper steel beam itself, and the left end of the steel plate is located in the through groove in the middle right side of the upper end of the left steel beam. The lower end of a steel plate is located in the through groove of the lower steel beam itself, and the left end of the steel plate is located in the through groove in the middle of the right side of the left steel beam; the upper end of a steel plate is located in the through groove of the upper steel beam itself, and the right end of the steel plate is located in the through groove in the middle of the left side of the upper end of the right steel beam; the lower end of a steel plate is located in the through groove of the lower steel beam itself, and the right end of the steel plate is located in the through groove in the middle of the left side of the right steel beam; the through threaded holes provided on the front and rear end end faces of the through grooves in the middle of the right side of the upper and lower ends of the left steel beam or the middle of the left side of the upper and lower ends of the right steel beam are aligned with the through threaded holes on the steel plate in the through grooves along the front and rear directions; the through threaded holes provided on the front and rear ends of the through grooves in the middle of the left and right ends of the upper and lower steel beams are aligned with the through threaded holes on the steel plates in the through grooves along the front and rear directions. The through threaded holes on the steel plate in the through groove are aligned in the front-to-back direction; the bolts pass through the through threaded holes on the steel plate through the through threaded holes at the front ends of the left steel beam, the right steel beam, the upper steel beam and the lower steel beam, and extend from the through threaded holes at the rear ends of the vertical beam, the upper steel beam and the lower steel beam and are fixed with nuts; the lower side of the upper steel beam and the upper side of the lower steel beam are respectively perpendicular to the right side of the left steel beam and the left side of the right steel beam, wherein each two side surfaces perpendicular to each other are respectively tightly attached to the outer sides of the two folded edges of the L-shaped fixing bracket itself, and the two folded edges of the L-shaped fixing bracket are fixed to the lower side of the upper steel beam, the right side of the left steel beam or the upper end of the lower steel beam, the right side of the left steel beam or the lower side of the upper steel beam, the left side of the right steel beam or the upper side of the lower steel beam, and the left side of the right steel beam through a bolt structure.

[0009] The metal square shell frame of the furnace door panel itself includes a square frame, and a plurality of horizontal beams and a plurality of vertical beams are arranged on the inner side of the square frame. The upper and lower ends of each vertical beam are respectively connected to the lower end of the upper steel beam and the upper end of the lower steel beam through mortise and tenon structures. Specifically, the mortise and tenon structure at the intersection of the horizontal beam and the vertical beam and the mortise and tenon structure at the intersection of the horizontal beam and the left steel beam and the right steel beam are that each horizontal beam is divided into multiple equal sections, and each section of the horizontal beam is located between two vertical beams, between the vertical beam and the left steel beam, and between the vertical beam and the right steel beam. Both ends of each section of the horizontal beam are fixedly connected to the side of the vertical beam or the right side of the left steel beam or the left side of the right steel beam through mortise and tenon structures.

[0010] The mortise and tenon structure at the intersection of the horizontal beam and the vertical beam is specifically structured in that there is one horizontal beam and two vertical beams in the square frame, and the horizontal beam includes three sections: a left horizontal beam, a right horizontal beam and a middle horizontal beam. Tenons are provided on the front and rear sides of the left and right end faces of the left and middle horizontal beams, and tenon grooves are provided on the front and rear sides of the left and right end faces of the middle part of the vertical beams. The tenons are inserted into the tenon grooves, and the end faces of the tenons and the two sides of the tenons are tightly attached to the bottom surface of the tenon groove and the two sides of the bottom surface of the tenon groove; the left horizontal beam, the middle horizontal beam and the right beam are all provided with through grooves in the upper and lower directions. A through groove is arranged along the left and right ends of the middle part. The width of the through grooves of the left cross beam, the middle cross beam and the right cross beam in the front-to-back direction is the same as the width of the through grooves of the left and right ends of the vertical beam itself in the front-to-back direction. The length of the through grooves of the left and right ends of the vertical beam itself in the up-down direction is greater than the length of the through grooves of the left cross beam, the middle cross beam and the right cross beam in the up-down direction. The length of the through groove of the vertical beam itself above the left-right central axis of the horizontal beam itself is equal to the length of the through groove of the vertical beam below the left-right central axis of the horizontal beam; the left and right ends of an equilateral octagonal steel plate The equilateral octagonal steel plate is respectively inserted into the through grooves of the left cross beam and the middle cross beam or the middle cross beam and the right cross beam, and the middle part of the equilateral octagonal steel plate is located in the through grooves of the left and right ends of the vertical beam itself. The thickness of the equilateral octagonal steel plate is the same as the width of the through groove along the front-to-back direction. The through threaded holes provided on the equilateral octagonal steel plate are respectively aligned with the through threaded holes provided on the front and rear end surfaces of the through grooves of the left cross beam, the middle cross beam, the vertical beam or the middle cross beam, the right cross beam, and the vertical beam in the front-to-back direction. The bolts are passed through the left cross beam, the middle cross beam, the vertical beam or the middle cross beam, the right cross beam, and the vertical beam. The through threaded holes at the front end of each body pass through the threaded holes on the equilateral octagonal steel plate, and extend out from the left crossbeam, the right crossbeam, the vertical beam or the crossbeam, the right crossbeam, and the vertical beam through the threaded holes at the rear end of each body and are fixed with nuts; the upper and lower sides of the left crossbeam and the middle crossbeam or the middle crossbeam and the right crossbeam are perpendicular to the left and right sides of the vertical beam, and each two perpendicularly intersecting sides are respectively tightly attached to the outer sides of the two folded edges of the L-shaped fixing bracket itself, and the two folded edges of the L-shaped fixing bracket are fixed to the side of the vertical beam, the side of the left crossbeam or the side of the right crossbeam through a bolt structure.

[0011] The left end of the left crossbeam and the right end of the right crossbeam are respectively connected with the right end of the left steel beam and the left end of the right steel beam by a mortise and tenon structure; its specific structure is in a square frame, the tenons provided on the front and rear sides of the left end face of the left crossbeam are inserted into the tenon grooves provided on the front and rear sides of the right end face of the left steel beam and fixed, the tenons provided on the front and rear sides of the right end face of the right crossbeam are inserted into the tenon grooves provided on the front and rear sides of the left end face of the right steel beam and fixed, the end faces of the tenons and the two sides of the tenons are tightly attached to the bottom face of the tenon groove and the two sides of the bottom face of the tenon groove; the middle part of the left end face of the left crossbeam and the middle part of the right end face of the right crossbeam are both provided with a through groove in the up and down direction, and the left steel beam and the right steel beam are fixed. The through grooves are provided along the left and right end surfaces, the width of the through grooves at the right end of the left cross beam and the left end of the right cross beam in the front-to-back direction is the same as the width of the through grooves that penetrate the left and right ends of the left steel beam and the right steel beam in the front-to-back direction, the length of the through grooves at the left and right ends of the left steel beam and the right steel beam in the up-down direction is greater than the length of the through grooves at the right end of the left cross beam and the through grooves at the left end of the right cross beam in the up-down direction, and the length of the through grooves at the left and right ends of the left steel beam and the right steel beam is symmetrical in the up-down direction with the central axis of the left cross beam or the right cross beam in the left-to-right direction as the symmetry axis; the left end of a steel plate is located at The left steel beam itself passes through the groove, the right end of the steel plate is located in the through groove in the middle of the left end face of the left cross beam, the right end of the other steel plate is located in the through groove of the right steel beam itself, and the left end of the steel plate is located in the through groove in the middle of the right end face of the right cross beam; the through threaded holes provided on the steel plate and the through threaded holes provided on the front and rear end faces of the through groove in the middle of the left end face of the left cross beam and the through threaded holes provided on the front and rear end faces of the through groove of the left steel beam itself are all aligned in the front-to-back direction, or the through threaded holes provided on the front and rear end faces of the through groove in the middle of the right end of the right cross beam and the through threaded holes provided on the front and rear end faces of the through groove of the right steel beam itself The through threaded holes provided on the end faces are all aligned in the front-to-back direction; the bolts pass through the threaded holes at the front ends of the left crossbeam, the right crossbeam, the left steel beam and the right steel beam, and pass through the threaded holes on the steel plate, and extend out from the threaded holes at the rear ends of the left crossbeam, the right crossbeam, the left steel beam and the right steel beam and are fixed with nuts; the side surfaces of the left crossbeam and the right crossbeam are respectively perpendicular to the side surfaces of the left steel beam and the right steel beam, and the side surfaces that intersect perpendicularly to each other are respectively tightly attached to the outer sides of the two folded edges of the L-shaped fixing bracket itself, and the two folded edges of the L-shaped fixing bracket are fixed to the side surfaces of the left steel beam, the left crossbeam or the right steel beam, and the right crossbeam through a bolt structure.

[0012] The upper and lower ends of the vertical beam are respectively connected with the lower end of the upper steel beam and the upper end of the lower steel beam at the intersection of the mortise and tenon structure. The specific structure is in a square frame. Tenons are provided on the front and rear sides of the upper end face of the vertical beam, and tenons are provided on the front and rear sides of the lower end face of the upper steel beam. Tenons are provided on the front and rear sides of the lower end face of the vertical beam, and tenons are provided on the front and rear sides of the upper end face of the lower steel beam. The tenons are inserted into the tenon grooves, and the end faces of the tenons and the two sides of the tenons are tightly attached to the bottom faces of the tenon grooves and the two sides of the bottom faces of the tenon grooves; the middle part of the upper end face of the vertical beam and the middle part of the lower end face of the vertical beam are both provided with through grooves in the left and right directions. The upper steel beam and the lower steel beam are provided with tenons along the upper and lower sides of themselves. A through groove is arranged between the end faces, and the width of the through grooves at the upper end and the lower end of the vertical beam in the front-to-back direction is the same as the width of the through grooves that penetrate the upper and lower ends of the upper steel beam and the lower steel beam in the front-to-back direction. The length of the through grooves that penetrate the middle of the upper and lower end faces of the vertical beam itself in the left-right direction is greater than the length of the through grooves at the upper end of the upper cross beam and the through grooves at the lower end of the lower cross beam in the left-right direction. The lengths of the through grooves that penetrate the upper and lower ends of the upper steel beam and the lower steel beam themselves are symmetrical in the left-right direction with the vertical beam itself as the axis of symmetry in the upper and lower directions. The upper end of a steel plate is located at the upper The steel beam itself penetrates the groove, the lower end of the steel plate is located in the through-groove in the middle of the upper end face of the vertical beam, the lower end of another steel plate is located in the through-groove of the lower steel beam itself, and the upper end of the steel plate is located in the through-groove in the middle of the lower end face of the vertical beam; the through-threaded holes provided on the steel plate and the through-threaded holes provided on the front and rear end faces of the through-groove in the middle of the upper end face of the vertical beam, and the through-threaded holes provided on the front and rear end faces of the through-groove in the upper steel beam are all aligned in the front-to-back direction, or the through-threaded holes provided on the front and rear end faces of the through-groove in the middle of the lower end face of the vertical beam and the through-groove in the lower steel beam The through threaded holes on the front and rear end faces of the part are aligned along the front and rear directions; the bolts pass through the threaded holes on the steel plate at the front ends of the vertical beam, the upper steel beam and the lower steel beam, and extend out from the threaded holes at the rear ends of the vertical beam, the upper steel beam and the lower steel beam and are fixed with nuts; the left and right sides of the vertical beam are perpendicular to the lower end of the upper steel beam and the upper end of the lower steel beam, and each two side surfaces that intersect perpendicularly to each other are respectively tightly attached to the outer sides of the two folded edges of the L-shaped fixing bracket itself, and the two folded edges of the L-shaped fixing bracket are fixed to the lower end of the upper steel beam, the side of the vertical beam or the upper end of the lower steel beam, the side of the vertical beam through a bolt structure.

[0013] The counterweight hanging device includes a gantry and a winch. The gantry includes two brackets and a cross bar. The cross bar includes a cross bar 1 and a cross bar 2. The lower ends of the two brackets are fixed to the left and right ends of the front upper end of the industrial furnace body. The front and rear sides of the inner sides of the upper ends of the two brackets are respectively fixedly connected with the left and right ends of the cross bar 1 and the cross bar 2 through mortise and tenon structures; bearing seats are installed on the left and right sides of the upper end of each cross bar, and the bearing seats themselves are sleeved with bearings in the through holes running through the left and right sides. Both ends of a horizontal axis are sleeved in the bearing holes of the bearings themselves, and one end of the horizontal axis passes through the bearing holes and is fixed to the left bracket or the right bracket. The main shaft of the main motor of the winch on the frame is fixedly connected, and multiple sprockets are welded on the horizontal axis; one end of the chain passes through the sprocket welded on the horizontal axis above the gantry cross bar 1 from bottom to top, and then changes to the sprocket welded on the cross bar 2 itself along the front and rear horizontal direction, and then changes direction downward to be fixedly connected to the upper end of the counterweight body located at the lower rear side of the gantry cross bar 2, and the other end of the chain passes through the sprocket welded on the horizontal axis on the gantry cross bar 1 and extends downward to be connected with the hook welded on the iron plate at the upper end of the square frame of the furnace door panel itself; the winch is connected to the industrial furnace power control cabinet through a power cord.

[0014] The front and rear sides of the inner sides of the upper ends of the two brackets are respectively fixedly connected with the left and right ends of the cross bar one and the second cross bar through the mortise and tenon structure, and the specific mortise and tenon structure is that the middle parts of the left and right ends of the cross bar one and the second cross bar are provided with tenons, and the front and rear sides of the inner sides of the upper ends of the two brackets are provided with tenons, and the tenons at the left and right ends of the cross bar one and the second cross bar are inserted into the tenons at the front and rear sides of the inner sides of the upper ends of the two brackets for fixing; the front and rear sides of the cross bar one and the second cross bar are perpendicularly intersected with the inner sides of the upper ends of the two brackets, wherein the side surfaces that are perpendicularly intersected with each other are respectively tightly attached to the outer sides of the two folded edges of the L-shaped fixed bracket itself, and the two folded edges of the L-shaped fixed bracket are fixed to the lower end of the upper steel beam, the side surface of the vertical beam or the upper end of the lower steel beam, the side surface of the vertical beam through a bolt structure.

[0015] The bracket comprises two support rods 1 and 2 arranged side by side in the front and rear directions, the front and rear ends of the connecting rod 1 are connected by the upper rear side of the support rod 1 and the upper front side of the support rod 2 through a mortise and tenon structure, and the front and rear ends of the connecting rod 2 are connected by the lower rear side of the support rod and the lower front side of the support rod 2 through a mortise and tenon structure; a tenon is provided at the middle of the front and rear ends of the connecting rod 1 and the connecting rod 2, a tenon groove is provided at the upper rear side and the lower rear side of the support rod 1, and a tenon groove is provided at the upper front side and the lower front side of the support rod 2, and the tenon is inserted into the tenon groove for fixing; at the same time, the side faces of the front and rear ends of the connecting rod 1 and the connecting rod 2 are respectively perpendicular to and intersect with the rear side of the support rod 1 and the front side of the support rod 2, wherein, they are mutually The two vertically intersecting side surfaces are respectively tightly attached to the outer sides of the two folded edges of the L-shaped fixing bracket itself, and the two folded edges of the L-shaped fixing bracket are fixed to the rear side of the support rod one and the upper side of the front end of the connecting rod one or the upper side of the front end of the connecting rod two by a bolt structure, and the two folded edges of the L-shaped fixing bracket are fixed to the rear side of the support rod one and the lower side of the front end of the connecting rod one or the lower side of the front end of the connecting rod two by a bolt structure, and the two folded edges of the L-shaped fixing bracket are fixed to the front side of the support rod two and the upper side of the rear end of the connecting rod one or the upper side of the rear end of the connecting rod two by a bolt structure, and the two folded edges of the L-shaped fixing bracket are fixed to the front side of the support rod two and the lower side of the rear end of the connecting rod one or the lower side of the rear end of the connecting rod two by a bolt structure.

[0016] The lower end of the bracket is fixed to the two ends of the steel beam arranged in the left and right directions in front of the upper end of the industrial furnace body by a mortise and tenon structure. The specific structure is that a tenon is provided in the middle of the lower end of the support rod one and the support rod two, and the tenon is inserted into the tenon groove provided on the upper side of the two ends of the steel beam for fixation; at the same time, the left and right sides of the support rod one and the left and right sides of the support rod two are perpendicular to the upper side of the steel beam, and each two side sides that are perpendicular to each other are tightly attached to the outer sides of the two folded edges of the L-shaped fixed bracket itself, and the two folded edges of the L-shaped fixed bracket are fixed to the lower end of the upper steel beam, the side of the vertical beam or the upper end of the lower steel beam, the side of the vertical beam through a bolt structure.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model discloses a furnace door panel structure with a mortise and tenon structure for an industrial furnace and a counterweight hanging device thereof. The furnace door panel structure is mainly composed of a mortise and tenon structure and a bolt connection structure, and the connection structure of the counterweight hanging device itself is also mainly composed of a mortise and tenon structure and a bolt connection structure. Such a structure allows for rapid installation of the furnace door panel and the counterweight hanging device thereof during construction of the industrial furnace, and facilitates disassembly and replacement of local components of the furnace door panel which are cracked and damaged due to thermal shock during later maintenance.

[0019] On the other hand, the traditional furnace door panel lining is replaced with high-temperature resistant fiber blankets and high-temperature resistant fiber modules, which greatly reduces the weight of the furnace door panel and improves the thermal insulation effect. Because the mortise and tenon structure is adopted inside the metal square shell of the furnace door panel itself, it is also convenient to replace the furnace door panel lining. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side view structural schematic diagram of a furnace door panel structure and a furnace door panel counterweight hanging device for an industrial furnace according to the utility model;

[0021] Figure 2 It is a front structural schematic diagram of a furnace door panel structure for an industrial furnace and a furnace door panel counterweight hanging device in the utility model;

[0022] Figure 3 It is a schematic diagram of the front perspective structure of a furnace door panel structure for an industrial furnace and a furnace door panel counterweight hanging device of the utility model;

[0023] In the figure: 1 furnace door frame; 101 upright column; 102 horizontal and vertical beams; 103 furnace door sill; 2 furnace door plate; 201 steel wheel bracket; 202 steel wheel; 203 steel slide rail; 204 iron plate; 205 hook; 206 square frame; 2061 upper steel beam; 2062 lower steel beam; 2063 left steel beam; 2064 right steel beam; 207 vertical beam; 208 horizontal beam; 2081 left horizontal beam; 2082 middle horizontal beam; 2083 right horizontal beam; 209 intersection of horizontal beam and vertical beam 210 the mortise and tenon structure at the intersection of the left end of the left crossbeam and the right end of the right crossbeam with the right end of the left steel beam and the left end of the right steel beam respectively; 211 the mortise and tenon structure at the intersection of the upper and lower ends of the vertical beam with the lower end of the upper steel beam and the upper end of the lower steel beam respectively; 212 the mortise and tenon structure at the end-to-end connection between the upper steel beam, the lower steel beam, the left steel beam and the right steel beam of the square frame itself; 213 high temperature resistant fiber blanket, fiber module; 214 tenon; 215 steel plate; 216 octagonal steel plate; 217 L-shaped fixed bracket; 3 counterweight hanging device; 301 sprocket; 302 bracket; 3021 support rod one; 3022 support rod two; 3023 connecting rod one; 3024 connecting rod two; 303 chain; 304 counterweight body; 305 bearing seat; 306 cross bar one; 307 horizontal axis; 308 motor. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Please refer to the legend. In the embodiment of the utility model, a furnace door panel 2 structure for an industrial furnace includes a furnace door opening provided in the middle of the front end of the furnace body. The furnace door opening is a square opening in the middle of the front end of the furnace body, and a furnace door frame 1 is built on the inner wall of the square opening; the furnace door frame 1 is a square frame composed of a horizontal beam 102, a furnace door sill 103 and two columns 101, and they are all cast entities of amorphous refractory materials. The lower end of the furnace door sill 103 is tightly attached to the upper end of the square opening of the furnace door, the upper end of the horizontal beam 102 is tightly attached to the lower end of the square opening of the furnace door itself, and the two columns 101 are located between the horizontal beam 102 and the furnace door sill 103. The upper ends of the two columns 101 are fixedly connected to the left and right sides of the lower end of the horizontal beam 102, respectively. The lower ends of the two columns 101 are fixedly connected to the left and right sides of the upper end of the furnace door sill 103, and the outer sides of the two columns 101 are tightly attached to the inner walls of the left and right sides of the square opening of the furnace door itself; on the front end faces of the left and right columns 101 of the furnace door frame 1 itself, there are steel slide rails 203 along the up and down directions, and the arc-shaped end faces of the upper ends of the steel slide rails 203 fit with the U-shaped grooves on the wheel surfaces of the steel wheels 202 mounted on the steel wheel brackets 302201 on the left and right sides of the furnace door plate 2; wherein, the furnace door plate 2 is a metal square shell, and hooks are provided on the left and right sides of the upper end face of the metal square shell, and the hooks are connected to the sprocket 301 on the gantry of the hanging device itself located in front of the upper end of the furnace body through the chain 303; The metal square shell is set to have an opening at the rear end facing the furnace door frame 1. The metal square shell includes a shell frame and an iron plate 204 covered on the outer side of the shell frame. The shell frame includes a square frame 206 formed by connecting the upper steel beam 2061, the lower steel beam 2062, the left steel beam 2063, and the right steel beam 2064 with each other through a mortise and tenon structure. A crossbeam 208 and a vertical beam 207 are arranged on the inner side of the square frame 206. The left and right ends of the crossbeam 208 are respectively fixedly connected to the upper inner side of the left steel beam 2063 of the square frame 206 and the upper inner side of the right steel beam 2064 of the square frame 206 through the mortise and tenon structure. The two ends of the vertical beam 207 are respectively fixedly connected to the upper inner side of the upper steel beam 2061 of the square frame 206 and the upper inner side of the lower steel beam 2062 through the mortise and tenon structure. At the same time, the middle part of the crossbeam 208 and the middle part of the vertical beam 207 are vertically intersected through the mortise and tenon structure.The front end faces of the cross beam 208 and the vertical beam 207 are flush with the front end faces of the square frame 206. The iron plate 204 wrapped around the outer side of the shell frame includes the iron plates 204 fixedly connected by bolt structures on the upper side of the upper steel beam 2061 of the square frame 206, the lower side of the lower steel beam 2062, the left side of the left steel beam 2063, and the right side of the right steel beam 2064. The front ends of the upper steel beam 2061, the lower steel beam 2062, the left steel beam 2063, and the right steel beam 2064 of the square frame 206, and the front ends of the vertical beam 207 and the cross beam 208 in the square frame 206 are all fixedly connected by bolt structures. The edges of the iron plates 204 at the front ends of the beams 208 and the vertical beams 207 are in close contact with the upper inner side of the iron plates 204 located on the outer side of the square frame 206; the inner side of the square frame 206 of the shell frame itself is filled with high-temperature resistant fiber blankets and fiber modules 213, and the high-temperature resistant fiber blankets and fiber modules 213 are anchored and connected with the square frame 206, the cross beams 208, the vertical beams 207 and the inner side of the iron plates 204 at the front ends of the square frame 206, the cross beams 208 and the vertical beams 207 through the anchor structure; the outer sides of the iron plates 204 on the left and right sides of the square frame 206 of the metal square shell of the furnace door panel 2 itself are fixedly connected with one side of the steel wheel 202 bracket 302201 through a bolt structure; the counterweight The hanging device 3 includes a gantry and a winch. The gantry includes two brackets 302 and a crossbar. The crossbar includes a crossbar 1 306 and a crossbar 2. The lower ends of the two brackets 302 are fixed to the left and right ends of the front upper end of the industrial furnace body. The front and rear sides of the inner sides of the upper ends of the two brackets 302 are respectively fixedly connected with the left and right ends of the crossbar 1 306 and the crossbar 2 through the mortise and tenon structure; the left and right sides of the upper end of each crossbar are installed with bearing seats 305, and the bearing seats 305 themselves are set with bearings in the through holes running through the left and right sides. The two ends of a horizontal shaft 307 are set in the bearing holes of the bearings themselves, and one end of the horizontal shaft 307 passes through the bearing hole and is fixed to the main motor 3 of the winch fixed on the left bracket 302 or the right bracket 302. 08 main shaft is fixedly connected, and multiple sprockets 301 are welded on the horizontal shaft 307; one end of the chain 303 goes from bottom to top, passes through the sprocket 301 welded on the horizontal shaft 307 above the gantry crossbar 1 306, and then changes to the sprocket 301 welded on the crossbar 2 itself along the front and rear horizontal direction, and then changes direction downward again to be fixedly connected to the upper end of the counterweight body 304 located at the rear lower side of the gantry crossbar 2, and the other end of the chain 303 passes through the sprocket 301 welded on the horizontal shaft 307 on the gantry crossbar 1 306 and extends downward and is connected to the hook 205 welded on the iron plate 204 at the upper end of the square frame 206 of the furnace door plate 2 itself; the winch is connected to the industrial furnace power control cabinet through a power cord. ;

[0026] Among them, the square frame 206 itself has a mortise and tenon structure 212 at the end-to-end connection between the upper steel beam 2061, the lower steel beam 2062, the left steel beam 2063, and the right steel beam 2064, wherein the upper steel beam 2061 and the lower steel beam 2062 have the same size, and the left steel beam 2063 and the right steel beam 2064 have the same size; the upper steel beam 2061 and the lower steel beam 2062 are provided with tenons 214 on the front and rear sides of the left and right end faces, and the left steel beam 2063 and the right steel beam 2064 are provided with tenons 214 on the right and left sides of the upper and lower ends, and the tenons 214 are inserted into the tenons, and the end faces of the tenons 214 and the two sides of the tenons 214 are tightly attached to the bottom surface of the tenon and the two sides of the bottom surface of the tenon; the upper steel beam 2061 and the lower steel beam 2062 are provided with tenons 214 in the middle of the left and right end faces in the up and down direction. Through grooves are provided in the middle of the right side of the upper and lower ends of the left steel beam 2063 and the middle of the left side of the upper and lower ends of the right steel beam 2064. The width of the through grooves of the upper steel beam 2061 and the lower steel beam 2062 along the front-to-back direction is the same as the width of the through grooves that pass through the middle of the right side of the upper and lower ends of the left steel beam 2063 and the middle of the left side of the upper and lower ends of the right steel beam 2064. The through grooves in the middle of the right side of the upper and lower ends of the left steel beam 2063 and the through grooves in the middle of the left side of the upper and lower ends of the right steel beam 2064 are both longer in the vertical direction than the through grooves on the left and right ends of the upper steel beam 2061 and the lower steel beam 2062. The length of the through groove of the vertical beam 207 itself above the central axis of the horizontal beam 208 in the left and right direction is the same as that of the vertical beam The lengths of the through groove 207 below the central axis of the beam 208 in the left and right directions are equal; the upper end of a steel plate 215 is located in the through groove of the upper steel beam 2061 itself, and the left end of the steel plate 215 is located in the through groove in the middle of the right side of the upper end of the left steel beam 2063; the lower end of a steel plate 215 is located in the through groove of the lower steel beam 2062 itself, and the left end of the steel plate 215 is located in the through groove in the middle of the right side of the left steel beam 2063; the upper end of a steel plate 215 is located in the through groove of the upper steel beam 2061 itself, and the right end of the steel plate 215 is located in the through groove in the middle of the left side of the upper end of the right steel beam 2064; the lower end of a steel plate 215 is located in the through groove of the lower steel beam 2062 itself, and the right end of the steel plate 215 is located in the through groove in the middle of the left side of the right steel beam 2064; the left steel beam 20 The through threaded holes provided at the front and rear end faces of the through grooves in the middle of the right side of the upper and lower ends of 63 or the middle of the left side of the upper and lower ends of the right steel beam 2064 are aligned with the through threaded holes on the steel plate 215 in the through grooves along the front-to-back direction; the through threaded holes provided at the front and rear ends of the through grooves in the middle of the left and right ends of the upper steel beam 2061 and the lower steel beam 2062 are aligned with the through threaded holes on the steel plate 215 in the through grooves along the front-to-back direction; the bolts pass through the through threaded holes at the front ends of the left steel beam 2063, the right steel beam 2064, the upper steel beam 2061, and the lower steel beam 2062, and pass through the through threaded holes on the steel plate 215, and extend out from the through threaded holes at the rear ends of the vertical beam 207, the upper steel beam 2061, and the lower steel beam 2062, and are fixed with nuts;The lower side of the upper steel beam 2061 and the upper side of the lower steel beam 2062 are respectively perpendicular to the right side of the left steel beam 2063 and the left side of the right steel beam 2064, wherein each of the two side surfaces perpendicularly intersecting each other are respectively in close contact with the outer sides of the two folded edges of the L-shaped fixing bracket 302 itself, and the two folded edges of the L-shaped fixing bracket 217 are fixed to the lower side of the upper steel beam 2061, the right side of the left steel beam 2063 or the upper end of the lower steel beam 2062, the right side of the left steel beam 2063 or the lower side of the upper steel beam 2061, the left side of the right steel beam 2064 or the upper side of the lower steel beam 2062, and the left side of the right steel beam 2064 through a bolt structure. ;

[0027] Among them, the metal square shell frame of the furnace door panel 2 itself includes a square frame 206, and a plurality of cross beams 208 and a plurality of vertical beams 207 are arranged on the inner side of the square frame 206. The upper and lower ends of each vertical beam 207 are respectively connected to the lower end of the upper steel beam 2061 and the upper end of the lower steel beam 2062 through mortise and tenon structures. Specifically, the mortise and tenon structure at the intersection of the cross beam 208 and the vertical beam 207 and the mortise and tenon structure at the intersection of the cross beam 208 and the left steel beam 2063 and the right steel beam 2064 are that each cross beam 208 is divided into multiple equal sections, and each section of the cross beam 208 is located between two vertical beams 207, between the vertical beam 207 and the left steel beam 2063, and between the vertical beam 207 and the right steel beam 2064. Both ends of each section of the cross beam 208 are fixedly connected to the side of the vertical beam 207 or the right side of the left steel beam 2063 or the left side of the right steel beam 2064 through the mortise and tenon structure.

[0028] Among them, the mortise and tenon structure 209 at the intersection of the horizontal beam 208 and the vertical beam 207 has a specific structure that there is one horizontal beam 208 and two vertical beams 207 in the square frame 206, and the horizontal beam 208 includes three sections: a left horizontal beam 2081, a right horizontal beam 2083 and a middle horizontal beam 2082. Tenons 214 are provided on the front and rear sides of the left and right end faces of the left and right ends of the left and right ends of the vertical beam 207, and tenons 214 are provided on the front and rear sides of the left and right end faces of the middle part of the vertical beam 207. The tenons 214 are inserted into the tenon grooves, and the end faces of the tenons 214 and the two sides of the tenons 214 are in close contact with the bottom surface of the tenon groove and the two sides of the bottom surface of the tenon groove; the middle of the left and right end faces of the left and right ends of the left and right ends of the left and right ends of the middle beam 2081, the middle beam 2082 and the right beam 2083 are all along the upper and lower A through groove is provided in the middle of the vertical beam 207 along the left and right ends. The width of the through grooves of the left cross beam 2081, the middle cross beam 2082, and the right cross beam 2083 along the front-to-back direction is the same as the width of the through grooves that penetrate the left and right ends of the vertical beam 207. The length of the through grooves at the left and right ends of the vertical beam 207 in the up-down direction is greater than the length of the through grooves of the left cross beam 2081, the middle cross beam 2082, and the right cross beam 2083 in the up-down direction. The length of the through groove of the vertical beam 207 above the left-right central axis of the cross beam 208 is equal to the length of the through groove of the vertical beam 207 below the left-right central axis of the cross beam 208. The left and right ends of an equilateral octagonal steel plate 216 are respectively inserted into The middle part of the equilateral octagonal steel plate 216 is located in the through grooves of the left cross beam 2081 and the middle cross beam 2082 or the middle cross beam 2082 and the right cross beam 2083, and the middle part of the equilateral octagonal steel plate 216 is located in the through grooves that penetrate the left and right ends of the vertical beam 207 itself. The thickness of the equilateral octagonal steel plate is the same as the width of the through groove in the front-to-back direction. The through threaded holes provided on the equilateral octagonal steel plate 216 are respectively aligned with the through threaded holes provided on the front and rear end surfaces of the through grooves of the left cross beam 2081, the middle cross beam 2082, the vertical beam 207 or the middle cross beam 2082, the right cross beam 2083, and the vertical beam 207 in the front-to-back direction. The bolts are passed through the left cross beam 2081, the middle cross beam 2082, the vertical beam 207 or the middle cross beam 2082, the right cross beam 2083, and the vertical beam 207. 07, the through threaded holes at the front ends of their respective bodies pass through the threaded holes on the equilateral octagonal steel plate 216, and extend from the left crossbeam 2081, the right crossbeam 2083, the vertical beam 207 or the crossbeam 208, the right crossbeam 2083, the vertical beam 207 through the threaded holes at the rear ends of their respective bodies and are fixed with nuts; the left crossbeam 2081 and the middle crossbeam 2082 or the middle crossbeam 2082 and the right crossbeam 2083 are respectively perpendicular to the left and right sides of the vertical beam 207, wherein each two perpendicularly intersecting sides are respectively tightly attached to the outer sides of the two folded edges of the L-shaped fixing bracket 302 itself, and the two folded edges of the L-shaped fixing bracket 217 are fixed to the side of the vertical beam 207, the side of the left crossbeam 2081 or the side of the right crossbeam 2083 through a bolt structure.

[0029] Among them, the left end of the left cross beam 2081 and the right end of the right cross beam 2083 are respectively connected with the right end of the left steel beam 2063 and the left end of the right steel beam 2064 at the intersection of the mortise and tenon structure 210; its specific structure is in the square frame 206, the tenon 214 provided on the front and rear sides of the left end face of the left cross beam 2081 is inserted into the tenon groove provided on the front and rear sides of the right end face of the left steel beam 2063 for fixing, the tenon 214 provided on the front and rear sides of the right end face of the right cross beam 2083 is inserted into the tenon groove provided on the front and rear sides of the left end face of the right steel beam 2064 for fixing, the end face of the tenon 214 and the two sides of the tenon 214 are tightly attached to the bottom surface of the tenon groove and the two sides of the bottom surface of the tenon groove; the left end face of the left cross beam 2081 The left steel beam 2063 and the right steel beam 2064 are both provided with through grooves along the end faces at both ends, and the width of the through grooves at the right end of the left cross beam 2081 and the left end of the right cross beam 2083 in the front-to-back direction is the same as the width of the through grooves at the left and right ends of the left steel beam 2063 and the right steel beam 2064 in the front-to-back direction. The length of the through grooves at the left and right ends of the left steel beam 2063 and the right steel beam 2064 in the top-to-bottom direction is greater than the length of the through grooves at the right end of the left cross beam 2081 and the through grooves at the left end of the right cross beam 2083 in the top-to-bottom direction. The lengths of the through grooves at the left and right ends of the right steel beam 2064 are symmetrical along the up-down direction with the left crossbeam 2081 or the right crossbeam 2083 itself in the left-right direction as the symmetry axis; the left end of one steel plate 215 is located in the through groove of the left steel beam 2063 itself, and the right end of the steel plate 215 is located in the through groove in the middle of the left end face of the left crossbeam 2081; the right end of the other steel plate 215 is located in the through groove of the right steel beam 2064 itself, and the left end of the steel plate 215 is located in the through groove in the middle of the right end face of the right crossbeam 2083; the through threaded hole provided on the steel plate 215 is consistent with the through threaded hole provided on the front and rear ends of the through groove in the middle of the left end face of the left crossbeam 2081 The threaded holes and the through threaded holes provided on the front and rear end surfaces of the left steel beam 2063 itself penetrating the groove are aligned along the front-to-back direction, or the through threaded holes provided on the front and rear end surfaces of the right end of the right cross beam 2083 and the through threaded holes provided on the front and rear end surfaces of the right steel beam 2064 itself penetrating the groove are aligned along the front-to-back direction; the bolts pass through the threaded holes at the front ends of the left cross beam 2081, the right cross beam 2083, the left steel beam 2063, and the right steel beam 2064, and pass through the threaded holes on the steel plate 215, and extend out from the threaded holes at the rear ends of the left cross beam 2081, the right cross beam 2083, the left steel beam 2063, and the right steel beam 2064, and are fixed with nuts;The side of the left cross beam 2081 and the side of the right cross beam 2083 are respectively perpendicular to the side of the left steel beam 2063 and the side of the right steel beam 2064, wherein the two side surfaces perpendicularly intersecting each other are respectively in close contact with the outer sides of the two folded edges of the L-shaped fixing bracket 302 itself, and the two folded edges of the L-shaped fixing bracket 217 are fixed to the side of the left steel beam 2063, the side of the left cross beam 2081 or the side of the right steel beam 2064, and the side of the right cross beam 2083 by bolt structures. ;

[0030] Among them, the mortise and tenon structure 211 at the intersection of the upper and lower ends of the vertical beam 207 with the lower end of the upper steel beam 2061 and the upper end of the lower steel beam 2062 respectively, and its specific structure is in the square frame 206, the upper end face of the vertical beam 207 is provided with a tenon 214 on both sides of the front and rear sides, the lower end face of the upper steel beam 2061 is provided with a tenon groove on both sides, the lower end face of the vertical beam 207 is provided with a tenon 214 on both sides of the front and rear sides, the upper end face of the lower steel beam 2062 is provided with a tenon groove on both sides, the tenon 214 is inserted into the tenon groove, and the end face of the tenon 214 and the two sides of the tenon 214 are tightly attached to the bottom surface of the tenon groove and the two sides of the bottom surface of the tenon groove; the middle part of the upper end face of the vertical beam 207 and the middle part of the lower end face of the vertical beam 207 are both provided with a through groove in the left and right direction, and the upper steel beam 2061 and the lower steel beam 2061 are provided with a tenon groove. A through groove is provided between the upper and lower end surfaces of the vertical beam 207 and the lower end of the vertical beam 207. The width of the through grooves in the front-to-back direction of the upper and lower ends of the vertical beam 207 is the same as the width of the through grooves in the front-to-back direction that penetrate the upper and lower ends of the upper steel beam 2061 and the lower steel beam 2062. The length of the through grooves in the left-right direction that penetrate the middle of the upper and lower end surfaces of the vertical beam 207 itself is greater than the length of the through grooves at the upper end of the upper cross beam 208 and the through grooves at the lower end of the lower cross beam 208. The lengths of the through grooves that penetrate the upper and lower ends of the upper steel beam 2061 and the lower steel beam 2062 are symmetrical in the left-to-right direction with the vertical beam 207 itself as the axis of symmetry in the upper and lower directions. The upper end of a steel plate 215 is located at the upper The steel beam 2061 itself passes through the groove, the lower end of the steel plate 215 is located in the through groove in the middle of the upper end face of the vertical beam 207, the lower end of the other steel plate 215 is located in the through groove of the lower steel beam 2062 itself, and the upper end of the steel plate 215 is located in the through groove in the middle of the lower end face of the vertical beam 207; the through threaded holes provided on the steel plate 215 and the through threaded holes provided on the front and rear end faces of the through groove in the middle of the upper end face of the vertical beam 207, and the through threaded holes provided on the front and rear end faces of the through groove in the upper steel beam 2061 are all aligned in the front-to-back direction, or the through threaded holes provided on the front and rear end faces of the through groove in the middle of the lower end face of the vertical beam 207 and the through threaded holes provided on the front and rear end faces of the through groove in the lower steel beam 2062 Some of the through threaded holes are aligned in the front-to-back direction; the bolts pass through the threaded holes at the front ends of the vertical beam 207, the upper steel beam 2061, and the lower steel beam 2062, through the threaded holes on the steel plate 215, and extend out from the threaded holes at the rear ends of the vertical beam 207, the upper steel beam 2061, and the lower steel beam 2062 and are fixed with nuts; the left and right sides of the vertical beam 207 are perpendicular to the lower end of the upper steel beam 2061 and the upper end of the lower steel beam 2062, and each two side surfaces that are perpendicular to each other are tightly attached to the outer sides of the two folded edges of the L-shaped fixing bracket 217 itself, and the two folded edges of the L-shaped fixing bracket 217 are fixed to the lower end of the upper steel beam 2061, the side of the vertical beam 207 or the upper end of the lower steel beam 2062, and the side of the vertical beam 207 through a bolt structure.

[0031] Among them, the bracket 302 of the counterweight hanging device 3 itself includes two support rods 1 3021 and 3022 arranged side by side in the front and rear directions, the front and rear ends of the connecting rod 1 3023 are connected by the upper rear side of the support rod 1 3021 and the upper front side of the support rod 2 3022 through the mortise and tenon structure, and the front and rear ends of the connecting rod 2 3024 are connected by the lower rear side of the support rod 1 3021 and the lower front side of the support rod 2 3022 through the mortise and tenon structure; the middle parts of the front and rear ends of the connecting rod 1 3023 and the connecting rod 2 3024 are provided with tenons 214, the upper rear side and the lower rear side of the support rod 1 3021 itself are provided with tenon grooves, and the upper front side and the lower front side of the support rod 2 3022 itself are provided with tenon grooves, and the tenon 214 is inserted into the tenon grooves for fixing; at the same time, the front and rear end sides of the connecting rod 1 3023 and the connecting rod 2 3024 are respectively perpendicular and parallel to the rear side of the support rod 1 3021 and the front side of the support rod 2 3022 Intersect, wherein the two side surfaces that intersect each other perpendicularly are respectively tightly attached to the outer sides of the two folded edges of the L-shaped fixing bracket 302 itself, the two folded edges of the L-shaped fixing bracket 217 are fixed to the rear side of the support rod 1 3021 and the upper side of the front end of the connecting rod 1 3023 or the upper side of the front end of the connecting rod 2 3024 by a bolt structure, and the two folded edges of the L-shaped fixing bracket 217 are fixed to the rear side of the support rod 1 3021 and the lower side of the front end of the connecting rod 1 3023 or the lower side of the front end of the connecting rod 2 3024 by a bolt structure, and the two folded edges of the L-shaped fixing bracket 217 are fixed to the front side of the support rod 2 3022 and the upper side of the rear end of the connecting rod 1 3023 or the upper side of the rear end of the connecting rod 2 3024 by a bolt structure, and the two folded edges of the L-shaped fixing bracket 217 are fixed to the front side of the support rod 2 3022 and the lower side of the rear end of the connecting rod 1 3023 or the lower side of the rear end of the connecting rod 2 3024 by a bolt structure.

[0032] Among them, the front and rear sides of the upper inner ends of the two brackets 302 of the counterweight hanging device 3 itself are respectively fixedly connected with the left and right ends of the cross bar 1 306 and the second cross bar through the mortise and tenon structure, and the mortise and tenon structure is specifically that the middle parts of the left and right ends of the cross bar 1 306 and the second cross bar are provided with tenons 214, and the front and rear sides of the inner sides of the connecting rod 1 3023 between the upper ends of the support rod 1 3021 and the upper ends of the support rod 2 3022 of the two brackets 302 are provided with tenons, and the tenons 214 at the left and right ends of the cross bar 1 306 and the second cross bar are inserted into the tenons on the front and rear sides of the inner side of the connecting rod 1 3023 for fixing; the front and rear sides of the cross bar 1 306 and the second cross bar are perpendicular to the inner side of the connecting rod 1 3023, and each two side sides perpendicular to each other are respectively tightly attached to the outer sides of the two folded edges of the L fixed bracket 302 itself, The two folded edges of the L-shaped fixing bracket 217 are fixed to the front side of the cross bar 306 and the inner side of the connecting rod 1 3023 or the rear side of the cross bar 306 and the inner side of the connecting rod 1 3023 through a bolt structure, and the two folded edges of the L-shaped fixing bracket 217 are fixed to the front side of the second cross bar and the inner side of the connecting rod 1 3023 or the rear side of the second cross bar and the inner side of the connecting rod 1 3023 through a bolt structure.

[0033] Among them, the lower end of the bracket 302 of the counterweight hanging device 3 itself is fixed to the two ends of the steel beam arranged in the left and right directions in front of the upper end of the industrial furnace body through a mortise and tenon structure. The specific structure is that a tenon 214 is provided in the middle of the lower end of the support rod 1 3021 and the support rod 2 3022, and the tenon 214 is inserted into the tenon groove provided on the upper side of the two ends of the steel beam for fixation; at the same time, the left and right sides of the support rod 1 3021 and the left and right sides of the support rod 2 3022 are perpendicular to the upper side of the steel beam, and each two side sides that are perpendicular to each other are tightly attached to the outer sides of the two folded edges of the L-shaped fixed bracket 302 itself, and the two folded edges of the L-shaped fixed bracket 217 are fixed to the lower end of the upper steel beam 2061 and the side of the vertical beam 207 or the upper end of the lower steel beam 2062 and the side of the vertical beam 207 through a bolt structure.

[0034] The working principle of the utility model is: the utility model is a furnace door panel 2 structure and a furnace door panel counterweight hanging device 3 for an industrial furnace, wherein the metal square shell of the furnace door panel 2 itself and the connection relationship between the square frame 206, the cross beam 208 and the vertical beam 207 in the metal square shell are mainly mortise and tenon structure and bolt connection structure, and the connection structure of the counterweight hanging device 3 itself is also mainly mortise and tenon structure and bolt connection structure. Such a structure ensures the firmness of the furnace door panel 2 structure, and its firmness is not stricter than that of the welding structure. At the same time, it is also convenient for the rapid installation of the furnace door panel 2 and its counterweight hanging device 3 during the construction of the industrial furnace, shortening the working hours, and in the later maintenance, it is convenient to disassemble and replace the partial metal square shell of the furnace door panel 2 damaged by cracks due to thermal shock.

[0035] On the other hand, the traditional furnace door panel 2 lining is replaced with a high-temperature resistant fiber blanket and a high-temperature resistant fiber module, which greatly reduces the weight of the furnace door panel 2 and reduces the thermal conductivity of the furnace door panel 2. Because the metal square shell of the furnace door panel 2 itself adopts a mortise and tenon structure, it is also convenient to replace the lining of the furnace door panel 2.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A furnace door panel structure for an industrial furnace, comprising a furnace door opening provided in the middle of the front end of a furnace body, the furnace door opening being a square opening in the middle of the front end of the furnace body, and a furnace door frame being built on the inner wall of the square opening; the furnace door frame being a square frame composed of a horizontal beam, a furnace door sill and two columns, and all of which are cast entities of unshaped refractory materials, the lower end of the furnace door sill is closely attached to the lower wall of the square opening of the furnace door, the upper end of the horizontal beam is closely attached to the upper wall of the square opening of the furnace door itself, and the two columns are located between the horizontal beam and the furnace door sill The upper ends of the two columns are respectively fixedly connected to the left and right sides of the lower ends of the horizontal beams, and the lower ends of the two columns are respectively fixedly connected to the left and right sides of the upper end of the furnace door sill, and the outer sides of the two columns are tightly attached to the inner walls of the left and right sides of the square opening of the furnace door itself; the front end surfaces of the left and right columns of the furnace door frame itself are provided with steel slide rails in the up and down directions, and the arc-shaped end surfaces of the upper ends of the steel slide rails are matched with the U-shaped grooves on the wheel surfaces of the steel wheel brackets installed on the left and right sides of the furnace door plate along the circumferential direction; the characteristics are: The furnace door panel is a metal square shell, and hooks are provided on the left and right sides of the upper end face of the metal square shell, and the hooks are connected to the sprocket on the gantry of the hanging device itself located in front of the upper end of the furnace body through chains; the rear end of the metal square shell facing the furnace door frame is set as an opening, and the metal square shell includes a shell frame and an iron plate covered on the outside of the shell frame, and the shell frame includes an upper steel beam, a lower steel beam, a left steel beam, and a right steel beam, which are connected end to end through a mortise and tenon structure to form a square frame surrounded by a square frame, and a horizontal beam and a vertical beam are provided on the inside of the square frame, and the left and right ends of the horizontal beam are respectively fixedly connected to the upper inner side of the left steel beam of the square frame itself and the upper inner side of the right steel beam of the square frame itself through a mortise and tenon structure, and the two ends of the vertical beam are respectively fixedly connected to the upper inner side of the upper steel beam of the square frame itself and the upper inner side of the lower steel beam through a mortise and tenon structure. At the same time, the horizontal beam and the vertical beam are vertically intersected by the mortise and tenon structure; the front end faces of the horizontal beam and the vertical beam The iron plate covered on the outer side of the shell frame and flush with the front end face of the square frame includes iron plates fixedly connected by bolt structures to the upper side of the upper steel beam, the lower side of the lower steel beam, the left side of the left steel beam and the right side of the right steel beam of the square frame itself, and the front end of the upper steel beam, the front end of the lower steel beam, the front end of the left steel beam, the front end of the right steel beam of the square frame itself, and the front end of the vertical beam and the front end of the cross beam in the square frame are all iron plates fixedly connected by bolt structures, wherein the edge of the iron plate located at the front end of the square frame and the cross beam and the vertical beam is tightly attached to the upper inner side of the iron plate located at the outer side of the square frame; the inner side of the square frame of the shell frame itself is filled with high-temperature resistant fiber blankets and fiber modules, and the high-temperature resistant fiber blankets and fiber modules are anchored and connected to the inner side of the iron plates of the square frame, cross beams, vertical beams and the front end of the square frame, cross beams and vertical beams through anchor structures; the outer sides of the iron plates on the left and right sides of the square frame of the metal square shell of the furnace door panel itself are fixedly connected to one side of the steel wheel bracket through bolt structures.

2. The door panel structure for an industrial furnace according to claim 1, characterized in that: The square frame is a rectangular frame structure formed by connecting the upper steel beam, the lower steel beam, the left steel beam and the right steel beam with each other through mortise and tenon structures, wherein the upper steel beam is the same size as the lower steel beam, and the left steel beam is the same size as the right steel beam; tenons are arranged on the front and rear sides of the left and right end faces of the upper and lower steel beams, and tenons are inserted into the tenon grooves on the right side of the upper and lower ends of the left steel beam and on the left side of the upper and lower ends of the right steel beam. The tenons are inserted into the tenon grooves and the end faces of the tenons and the two sides of the tenons are tightly attached to the bottom faces of the tenon grooves and the two sides of the bottom faces of the tenon grooves; through grooves are arranged in the middle of the left and right end faces of the upper and lower steel beams along the up and down direction, and through grooves are arranged in the middle of the right side of the upper and lower ends of the left steel beam and in the middle of the left side of the upper and lower ends of the right steel beam. The width of the through grooves of the steel beam and the lower steel beam in the front-to-back direction is the same as the width of the through grooves that pass through the middle right side of the upper and lower ends of the left steel beam and the middle left side of the upper and lower ends of the right steel beam. The through grooves in the middle right side of the upper and lower ends of the left steel beam and the through grooves in the middle left side of the upper and lower ends of the right steel beam are both longer in the up-down direction than the through grooves at the left and right ends of the upper and lower steel beams. The length of the through groove of the vertical beam itself above the left-right central axis of the horizontal beam itself is equal to the length of the through groove of the vertical beam below the left-right central axis of the horizontal beam; the upper end of a steel plate is located in the through groove of the upper steel beam itself, and the left end of the steel plate is located in the through groove in the middle right side of the upper end of the left steel beam. The lower end of the steel plate is located in the through groove of the lower steel beam itself, and the left end of the steel plate is located in the through groove in the middle of the right side of the left steel beam; the upper end of one steel plate is located in the through groove of the upper steel beam itself, and the right end of the steel plate is located in the through groove in the middle of the left side of the upper end of the right steel beam; the lower end of one steel plate is located in the through groove of the lower steel beam itself, and the right end of the steel plate is located in the through groove in the middle of the left side of the right steel beam; the through threaded holes provided on the front and rear end faces of the through grooves in the middle of the right side of the upper and lower ends of the left steel beam or in the middle of the left side of the upper and lower ends of the right steel beam are aligned with the through threaded holes on the steel plate in the through grooves along the front and rear directions; the through threaded holes provided on the front and rear ends of the through grooves in the middle of the left and right ends of the upper and lower steel beams are aligned with the through threaded holes on the steel plate in the through grooves along the front and rear directions. The through threaded holes on the steel plate in the through groove are aligned in the front-to-back direction; the bolts pass through the through threaded holes on the steel plate through the through threaded holes at the front ends of the left steel beam, the right steel beam, the upper steel beam and the lower steel beam, and extend from the through threaded holes at the rear ends of the vertical beam, the upper steel beam and the lower steel beam and are fixed with nuts; the lower side of the upper steel beam and the upper side of the lower steel beam are respectively perpendicular to the right side of the left steel beam and the left side of the right steel beam, wherein each two side surfaces perpendicular to each other are respectively tightly attached to the outer sides of the two folded edges of the L-shaped fixing bracket itself, and the two folded edges of the L-shaped fixing bracket are fixed to the lower side of the upper steel beam, the right side of the left steel beam or the upper end of the lower steel beam, the right side of the left steel beam or the lower side of the upper steel beam, the left side of the right steel beam or the upper side of the lower steel beam, and the left side of the right steel beam through a bolt structure.

3. The door panel structure for an industrial furnace according to claim 1, characterized in that: The metal square shell frame of the furnace door panel itself includes a square frame, and a plurality of horizontal beams and a plurality of vertical beams are arranged on the inside of the square frame. The upper and lower ends of each vertical beam are respectively connected with the lower end of the upper steel beam and the upper end of the lower steel beam through mortise and tenon structures. The specific mortise and tenon structure at the intersection of the horizontal beam and the vertical beam and the mortise and tenon structure at the intersection of the horizontal beam and the left steel beam and the right steel beam is that each horizontal beam is divided into multiple equal sections, and each section of the horizontal beam is located between two vertical beams, between the vertical beam and the left steel beam, and between the vertical beam and the right steel beam. Both ends of each section of the horizontal beam are fixedly connected with the side of the vertical beam or the right side of the left steel beam or the left side of the right steel beam through mortise and tenon structures.

4. The door panel structure for an industrial furnace according to claim 3, characterized in that: The mortise and tenon structure at the intersection of the horizontal beam and the vertical beam has a specific structure that there is one horizontal beam and two vertical beams in the square frame. The horizontal beam includes three sections: the left horizontal beam, the right horizontal beam and the middle horizontal beam. Tenons are provided on the front and rear sides of the left and right end faces of the left and middle horizontal beams, and tenon grooves are provided on the front and rear sides of the left and right end faces of the middle of the vertical beams. The tenons are inserted into the tenon grooves, and the end faces of the tenons and the two sides of the tenons are tightly attached to the bottom surface of the tenon groove and the two sides of the bottom surface of the tenon groove; the middle parts of the left and right end faces of the left and middle horizontal beams and the right beams are all provided with through grooves in the up and down direction, and the middle parts of the vertical beams are provided with through grooves. A through groove is provided along the left and right ends. The width of the through grooves of the left cross beam, the middle cross beam and the right cross beam in the front-to-back direction is the same as the width of the through grooves of the left and right ends of the vertical beam. The length of the through grooves of the left and right ends of the vertical beam in the up-down direction is greater than the length of the through grooves of the left cross beam, the middle cross beam and the right cross beam in the up-down direction. The length of the through groove of the vertical beam above the left-right central axis of the cross beam is equal to the length of the through groove of the vertical beam below the left-right central axis of the cross beam. The left and right ends of an equilateral octagonal steel plate are divided into The equilateral octagonal steel plate is respectively inserted into the through grooves of the left cross beam and the middle cross beam or the middle cross beam and the right cross beam, and the middle part of the equilateral octagonal steel plate is located in the through grooves at the left and right ends of the vertical beam itself. The thickness of the equilateral octagonal steel plate is the same as the width of the through groove along the front-to-back direction. The through threaded holes provided on the equilateral octagonal steel plate are respectively aligned with the through threaded holes provided on the front and rear end surfaces of the through grooves of the left cross beam, the middle cross beam, the vertical beam or the middle cross beam, the right cross beam, and the vertical beam in the front-to-back direction. The bolts are inserted into the through grooves of the left cross beam, the middle cross beam, the vertical beam or the middle cross beam, the right cross beam, and the vertical beam respectively. The bolts are inserted into the through grooves of the left cross beam, the middle cross beam, the vertical beam or the middle cross beam, the right cross beam, and the vertical beam respectively. A threaded hole is passed through the equilateral octagonal steel plate from the through threaded hole at the front end of the main body, and extends out from the left crossbeam, the right crossbeam, the vertical beam or the crossbeam, the right crossbeam, and the vertical beam through the threaded hole at the rear end of each body and is fixed by a nut; the upper and lower sides of the left crossbeam and the middle crossbeam or the middle crossbeam and the right crossbeam are perpendicular to the left and right sides of the vertical beam, and each two perpendicularly intersecting sides are respectively tightly attached to the outer sides of the two folded edges of the L-shaped fixing bracket itself, and the two folded edges of the L-shaped fixing bracket are fixed to the side of the vertical beam, the side of the left crossbeam or the side of the right crossbeam through a bolt structure.

5. The door panel structure for an industrial furnace according to claim 4, characterized in that: The left end of the left crossbeam and the right end of the right crossbeam are respectively connected with the right end of the left steel beam and the left end of the right steel beam in a mortise and tenon structure; its specific structure is in a square frame, the tenons provided on the front and rear sides of the left end face of the left crossbeam are inserted into the tenon grooves provided on the front and rear sides of the right end face of the left steel beam and fixed, the tenons provided on the front and rear sides of the right end face of the right crossbeam are inserted into the tenon grooves provided on the front and rear sides of the left end face of the right steel beam and fixed, the end face of the tenon and the two sides of the tenon are tightly attached to the bottom face of the tenon groove and the two sides of the bottom face of the tenon groove; the middle part of the left end face of the left crossbeam and the middle part of the right end face of the right crossbeam are both provided with a through groove in the up and down direction, the left steel beam and the right steel beam A through groove is provided along the left and right end surfaces, the width of the through grooves at the right end of the left cross beam and the left end of the right cross beam in the front-to-back direction is the same as the width of the through grooves that penetrate the left and right ends of the left steel beam and the right steel beam in the front-to-back direction, the length of the through grooves at the left and right ends of the left steel beam and the right steel beam in the up-down direction is greater than the length of the through grooves at the right end of the left cross beam and the through grooves at the left end of the right cross beam in the up-down direction, and the length of the through grooves at the left and right ends of the left steel beam and the right steel beam is symmetrical in the up-down direction with the left cross beam or the right cross beam as the symmetry axis in the left-to-right direction; the left end of a steel plate is located at the left The steel beam itself passes through the groove, the right end of the steel plate is located in the through groove in the middle of the left end face of the left cross beam, the right end of the other steel plate is located in the through groove of the right steel beam itself, and the left end of the steel plate is located in the through groove in the middle of the right end face of the right cross beam; the through threaded holes provided on the steel plate and the through threaded holes provided on the front and rear end faces of the through groove in the middle of the left end face of the left cross beam and the through threaded holes provided on the front and rear end faces of the through groove of the left steel beam itself are all aligned in the front and rear direction, or the through threaded holes provided on the front and rear end faces of the through groove in the middle of the right end of the right cross beam and the through threaded holes provided on the front and rear end faces of the through groove of the right steel beam itself The through threaded holes provided on the end faces are all aligned in the front-to-back direction; the bolts pass through the threaded holes at the front ends of the left crossbeam, the right crossbeam, the left steel beam and the right steel beam, and pass through the threaded holes on the steel plate, and extend out from the threaded holes at the rear ends of the left crossbeam, the right crossbeam, the left steel beam and the right steel beam and are fixed with nuts; the side surfaces of the left crossbeam and the right crossbeam are respectively perpendicular to the side surfaces of the left steel beam and the right steel beam, and the side surfaces that intersect perpendicularly to each other are respectively tightly attached to the outer sides of the two folded edges of the L-shaped fixing bracket itself, and the two folded edges of the L-shaped fixing bracket are fixed to the side surfaces of the left steel beam, the left crossbeam or the right steel beam, and the right crossbeam through a bolt structure.

6. The door panel structure for an industrial furnace according to claim 1, characterized in that: The upper and lower ends of the vertical beam are respectively connected with the lower end of the upper steel beam and the upper end of the lower steel beam at the intersection of the mortise and tenon structure. The specific structure is in a square frame. Tenons are provided on the front and rear sides of the upper end of the vertical beam, and tenons are provided on the front and rear sides of the lower end of the upper steel beam. Tenons are provided on the front and rear sides of the lower end of the vertical beam, and tenons are provided on the front and rear sides of the upper end of the lower steel beam. The tenons are inserted into the tenon grooves, and the end faces of the tenons and the two sides of the tenons are tightly attached to the bottom faces of the tenon grooves and the two sides of the bottom faces of the tenon grooves; the middle part of the upper end face of the vertical beam and the middle part of the lower end face of the vertical beam are both provided with through grooves in the left and right directions. The upper steel beam and the lower steel beam are provided with tenons along the upper and lower ends of themselves. A through groove is provided between the surfaces, and the width of the through grooves at the upper end and the lower end of the vertical beam in the front-to-back direction is the same as the width of the through grooves that penetrate the upper and lower ends of the upper steel beam and the lower steel beam in the front-to-back direction. The length of the through grooves that penetrate the middle of the upper and lower end surfaces of the vertical beam itself in the left-right direction is greater than the length of the through grooves at the upper end of the upper cross beam and the through grooves at the lower end of the lower cross beam in the left-right direction. The lengths of the through grooves that penetrate the upper and lower ends of the upper steel beam and the lower steel beam themselves are symmetrical in the left-right direction with the vertical beam itself as the axis of symmetry in the upper and lower directions; the upper end of a steel plate is located at the upper steel The beam itself is in the through groove, the lower end of the steel plate is located in the through groove in the middle of the upper end face of the vertical beam, the lower end of the other steel plate is located in the through groove of the lower steel beam itself, and the upper end of the steel plate is located in the through groove in the middle of the lower end face of the vertical beam; the through threaded holes provided on the steel plate and the through threaded holes provided on the front and rear end faces of the through groove in the middle of the upper end face of the vertical beam, and the through threaded holes provided on the front and rear end faces of the through groove in the upper steel beam are all aligned in the front-to-back direction, or the through threaded holes provided on the front and rear end faces of the through groove in the middle of the lower end face of the vertical beam and the through groove in the lower steel beam The through threaded holes on the front and rear end faces of the part are aligned along the front and rear directions; the bolts pass through the threaded holes on the steel plate at the front ends of the vertical beam, the upper steel beam and the lower steel beam, and extend out from the threaded holes at the rear ends of the vertical beam, the upper steel beam and the lower steel beam and are fixed with nuts; the left and right sides of the vertical beam are perpendicular to the lower end of the upper steel beam and the upper end of the lower steel beam, and each two side surfaces that intersect perpendicularly to each other are respectively tightly attached to the outer sides of the two folded edges of the L-shaped fixing bracket itself, and the two folded edges of the L-shaped fixing bracket are fixed to the lower end of the upper steel beam, the side of the vertical beam or the upper end of the lower steel beam, the side of the vertical beam through a bolt structure.

7. A counterweight hanging device for realizing a door panel structure for an industrial furnace according to any one of claims 1 to 6, characterized in that: The counterweight hanging device includes a gantry and a winch. The gantry includes two brackets and a crossbar. The crossbar includes a crossbar 1 and a crossbar 2. The lower ends of the two brackets are fixed to the two ends of the steel beam arranged in the left and right directions in front of the upper end of the industrial furnace body through a mortise and tenon structure. The front and rear sides of the inner sides of the upper ends of the two brackets are respectively fixedly connected with the left and right ends of the crossbar 1 and the crossbar 2 through the mortise and tenon structure; bearing seats are installed on the left and right sides of the upper end of each crossbar, and the bearing seats themselves are equipped with bearings in the through holes running through the left and right sides. Both ends of a horizontal axis are installed in the bearing holes of the bearings themselves, and one end of the horizontal axis passes through the bearing hole and is fixed on the left The main shaft of the winch main motor on the bracket or the right bracket is fixedly connected, and multiple sprockets are welded on the horizontal axis; one end of the chain passes through the sprocket welded on the horizontal axis above the gantry cross bar 1 from bottom to top, and then changes to the sprocket welded on the cross bar 2 itself along the front and rear horizontal direction, and then changes direction downward to be fixedly connected to the upper end of the counterweight body located at the lower rear side of the gantry cross bar 2, and the other end of the chain passes through the sprocket welded on the horizontal axis on the gantry cross bar 1 and extends downward to be connected to the hook welded to the iron plate at the upper end of the square frame of the furnace door panel itself; the winch is connected to the industrial furnace power control cabinet through a power cord.

8. The counterweight hanging device for a door panel structure of an industrial furnace according to claim 7, characterized in that: The bracket includes two support rods 1 and 2 arranged side by side in the front and rear directions, the front and rear ends of the connecting rod 1 are connected by the upper rear side of the support rod 1 and the upper front side of the support rod 2 through a mortise and tenon structure, and the front and rear ends of the connecting rod 2 are connected by the lower rear side of the support rod and the lower front side of the support rod 2 through a mortise and tenon structure; a tenon is provided at the middle of the front and rear ends of the connecting rod 1 and the connecting rod 2, a tenon groove is provided at the upper rear side and the lower rear side of the support rod 1, and a tenon groove is provided at the upper front side and the lower front side of the support rod 2, and the tenon is inserted into the tenon groove for fixing; at the same time, the side faces of the front and rear ends of the connecting rod 1 and the connecting rod 2 are respectively perpendicular to and intersect with the rear side of the support rod 1 and the front side of the support rod 2, wherein they are perpendicular to each other. The two side surfaces that intersect each other are respectively tightly attached to the outer sides of the two folded edges of the L-shaped fixing bracket itself, and the two folded edges of the L-shaped fixing bracket are fixed to the rear side of the support rod one and the upper side of the front end of the connecting rod one or the upper side of the front end of the connecting rod two by a bolt structure, and the two folded edges of the L-shaped fixing bracket are fixed to the rear side of the support rod one and the lower side of the front end of the connecting rod one or the lower side of the front end of the connecting rod two by a bolt structure, and the two folded edges of the L-shaped fixing bracket are fixed to the front side of the support rod two and the upper side of the rear end of the connecting rod one or the upper side of the rear end of the connecting rod two by a bolt structure, and the two folded edges of the L-shaped fixing bracket are fixed to the front side of the support rod two and the lower side of the rear end of the connecting rod one or the lower side of the rear end of the connecting rod two by a bolt structure.

9. The counterweight hanging device for a door panel structure of an industrial furnace according to claim 7, characterized in that: The front and rear inner sides of the upper ends of the two brackets are respectively fixedly connected to the left and right ends of the cross bar one and the second cross bar through a mortise and tenon structure. The specific mortise and tenon structure is that a tenon is provided in the middle of the left and right ends of the cross bar one and the second cross bar, and a tenon groove is provided on the front and rear sides of the inner side of the connecting rod one between the upper ends of the first support rod and the second support rod of the two brackets themselves, and the tenons at the left and right ends of the first support rod and the second cross bar are inserted into the tenon grooves on the front and rear sides of the inner side of the connecting rod one for fixation; the front and rear sides of the first support rod and the second cross bar are both perpendicular to the inner side of the connecting rod one, wherein each two side sides that are perpendicular to each other are respectively tightly attached to the outer sides of the two folded edges of the L-fixed bracket itself, and the two folded edges of the L-shaped fixed bracket are fixed to the front side of the first cross bar and the inner side of the connecting rod one or the rear side of the first cross bar and the inner side of the connecting rod one by a bolt structure, and the two folded edges of the L-shaped fixed bracket are fixed to the front side of the second cross bar and the inner side of the connecting rod one or the rear side of the second cross bar and the inner side of the connecting rod one by a bolt structure.

10. The counterweight hanging device for a door panel structure of an industrial furnace according to claim 7, characterized in that: The lower end of the bracket is fixed to the two ends of the steel beam arranged in the left and right directions in front of the upper end of the industrial furnace body through a mortise and tenon structure. The specific structure is that a tenon is provided in the middle of the lower end of the support rod one and the support rod two, and the tenon is inserted into the tenon groove provided on the upper side of the two ends of the steel beam for fixation; at the same time, the left and right sides of the support rod one and the left and right sides of the support rod two are perpendicular to the upper side of the steel beam, and each two side sides that are perpendicular to each other are tightly attached to the outer sides of the two folded edges of the L-shaped fixed bracket itself, and the two folded edges of the L-shaped fixed bracket are fixed to the lower end of the upper steel beam, the side of the vertical beam or the upper end of the lower steel beam, the side of the vertical beam through a bolt structure.

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