Lap joint type composite material flashboard

Abstract

The utility model discloses a lap joint type composite material flashboard which comprises a bearing beam and a plurality of metal plates which are sequentially connected in a lap joint mode, the metal plates are located below the bearing beam, the bearing beam is connected with each metal plate through a vertically-arranged connecting rod, the upper end of each connecting rod is detachably connected with the bearing beam, and the lower end of each connecting rod is detachably connected with the bearing beam. The lower end of each metal plate is detachably connected with each metal plate, and the outer surface of each metal plate is coated with a ceramic coating. The gate plate is composed of the lap joint type metal plates, and the risk of overall deformation of the gate plate can be effectively avoided; the connecting rod enables the bearing beam to be far away from a high-temperature area of a lower opening of the flame blocking brick, the risk that the bearing beam is heated to expand and deform is effectively reduced, and then flashboard deformation caused by deformation of the bearing beam can be effectively prevented. The ceramic coating is coated on the metal plate, so that the heat absorption speed and the heat release speed of the metal plate are reduced, the temperature difference of each part of the metal plate is reduced, and the deformation difference of a single metal plate caused by the temperature difference is reduced.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic rolled glass production equipment, in particular to an overlapping composite material gate plate. Background Art

[0002] The production process of photovoltaic glass is that the glass raw materials are melted in the melting furnace and then flow out through the overflow port, and then pass through the calendering rollers of the calendering machine (such as Figure 1 4) is pressed into shape. The overflow structure is usually made of high temperature resistant flame-blocking bricks (such as Figure 1 1) Tail brick (such as Figure 1 2) Lip brick (such as Figure 1 In actual production, when the calender needs to be changed, a gate is needed to block the glass liquid on the tail brick.

[0003] The use status of the gate in photovoltaic glass production is shown in the figure below: Figure 1 As shown, when in use, the gate can be lowered by hooking the lifting ring with the help of a lifting device to block the glass liquid. The main structure of the gate used in the common photovoltaic rolled glass production line is composed of a whole steel plate (such as Figure 1 This gate made of a whole piece of steel plate will have many problems during use, such as:

[0004] When the gate is working, the temperature of the steel plate immersed in the molten glass liquid is higher than that of the non-immersed part, so the expansion of the immersed part is greater than that of the non-immersed part. Due to the large temperature difference between the two parts and the width of the gate of about 3 meters, the difference in expansion is 30~50mm, which will cause the lower ends of the gate to warp upward. Even if the bottom of the gate changes from a straight line to an arc surface, the upward-warped parts of the lower ends on both sides are not tightly fitted with the tail brick surface, and the glass liquid will overflow in large quantities, which cannot effectively block the glass liquid.

[0005] When the gate is lowered, one side is the furnace mouth and the other side is the calender. The temperature inside the furnace mouth is very high, while the temperature on the calender side is room temperature. In addition, the gate thickness is 40mm, which makes the temperature difference between the two sides of the gate very large, resulting in a large difference in the expansion amount on both sides of the gate, causing the gate to arch inward;

[0006] When the machine change work is completed, before lifting the gate, in order to melt the crystallized glass liquid at the bottom edge of the gate, it is necessary to use an oxyacetylene gun to heat the outside of the gate. During heating, the temperature outside the gate is much higher than the temperature facing the furnace mouth, causing the expansion outside to be greater than the expansion facing the furnace mouth, causing the gate to arch outward.

[0007] In order to solve the many problems caused by the existing gate plates being composed of a whole piece of steel plate, patent application number CN202220268813.9 discloses a split-type photovoltaic glass liquid blocking steel gate plate, including a steel gate plate composed of multiple heat-resistant steel plates, a clamping plate, a lifting ring, and a lever. The multiple heat-resistant steel plates are arranged in parallel and one end is bolted to the clamping plate. There are gaps between the multiple heat-resistant steel plates. The lifting ring is fixed to the side of the clamping plate that is not connected to the heat-resistant steel plate, and the lever is fixed to the left and right ends of the clamping plate. Although the split-type steel gate plate adopts a structure composed of multiple steel gate plates to solve the problem of the gate plates warping at both ends, the problem of inward and outward arching is not solved. In actual application, the following problems still exist:

[0008] (1) The multiple heat-resistant steel plates of the gate are directly connected to the clamping plate by bolts. When in use, the clamping plate is very close to the lower end of the flame-blocking brick. Because the temperature of the lower end of the flame-blocking brick is above 1100℃, the clamping plate, which is more than three meters long, deforms severely under this temperature condition, causing the gate fastened to the clamping plate to also deform;

[0009] (2) The two adjacent heat-resistant steel plates of the gate plate are not overlapped, leaving a gap of about 4 mm. When the difference in linear expansion between the left and right heat-resistant steel plates is less than 4 mm and the temperature outside the heat-resistant steel plates has not dropped to the crystallization temperature of the glass liquid, a small amount of glass liquid will flow out;

[0010] (3) Compared with the whole gate plate, the gate plate is only a single piece into multiple pieces in structure. When used under the same working conditions, a single narrow heat-resistant steel plate will be deformed just like a whole wide heat-resistant steel plate.

[0011] (4) When the gate is used, the temperature inside the furnace mouth is high, and the thermal conductivity and heat radiation of the steel plate are high, which will make the temperature outside the furnace mouth also very high, resulting in a poor working environment for workers;

[0012] (5) The heat-resistant steel plate used for the gate is in direct contact with the molten glass liquid. When the gate is lifted, the heat-resistant steel plate will stick to the molten glass liquid, and the stuck glass liquid will be pulled into very long ice crystals. If the ice breaks and falls into the furnace mouth, it will flow to the calendering roller with the glass liquid. The crystallized hard glass can easily damage the calendering roller. Therefore, the gate still does not solve the risk of crystallized glass damaging the calendering roller. Utility Model Content

[0013] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a composite gate with a simple structure, better prevention of gate deformation, effective reduction of working environment temperature and better blocking effect of crystallized glass damage to calendering rollers and glass liquid.

[0014] The technical solution adopted by the utility model to solve its technical problems is: a lap-type composite material gate plate, including a load-bearing beam and a plurality of metal plates connected in sequence in a lap-type manner, the metal plates are located below the load-bearing beam, the load-bearing beam and each metal plate are connected by a vertically arranged connecting rod, the upper end of the connecting rod is detachably connected to the load-bearing beam, and the lower end thereof is detachably connected to each metal plate.

[0015] Furthermore, the outer surface of the metal plate is coated with a ceramic coating.

[0016] Furthermore, the side walls of the two adjacent metal plates are in a stepped overlapping structure, and a first gap is left between the vertical side walls at the overlapping portion of the two adjacent metal plates.

[0017] Furthermore, one side wall of the two adjacent metal plates is provided with an L-shaped notch, and the other side wall of the metal plate is provided with an inverted L-shaped notch that matches and overlaps the L-shaped notch, so that the overlap of the two adjacent metal plates presents a stepped overlap structure.

[0018] Furthermore, the front and rear side surfaces of the two adjacent metal plates are connected by a detachable upper connecting block, and the lower ends of the two adjacent metal plates are installed with a detachable lower connecting block.

[0019] Furthermore, the lower connecting block is provided with a plurality of countersunk holes, and the plurality of countersunk holes are distributed on both sides of the first gap. The countersunk holes located on the left side of the first gap are round holes, and the countersunk holes located on the right side of the first gap are elliptical long holes. The lower connecting block is provided with screw holes at positions corresponding to the countersunk holes, and it is connected to the two adjacent metal plates by screws matching the countersunk holes and screw holes.

[0020] Furthermore, a second gap is left between two adjacent lower connecting blocks located at the lower end of the metal plate.

[0021] Furthermore, the connecting rod includes an upper rod body and a lower rod body that are integrally formed. The upper rod body passes through the load-bearing beam, and the rod body extending above the load-bearing beam is connected to the load-bearing beam through a nut. The bottom outer wall of the lower rod body is processed with a thread, and the top of the metal plate is provided with a threaded hole connected to the thread.

[0022] Furthermore, the outer diameter of the lower rod body is greater than the outer diameter of the upper rod body.

[0023] Furthermore, a lifting ring is connected to the top of the load-bearing beam, and detachable handrails are installed on the outer side walls of the metal plates at the head and tail ends.

[0024] The beneficial effects of the overlapping composite material gate of the utility model are:

[0025] (1) The structure of the utility model is simple. By providing a connecting rod between the load-bearing beam and the metal plate, the distance between the load-bearing beam and the furnace mouth is effectively increased, so that the load-bearing beam is away from the high-temperature area of ​​the furnace mouth, thereby reducing the heat radiation of the load-bearing beam, making the load-bearing beam less expanded due to heat, and effectively reducing the risk of deformation of the load-bearing beam due to thermal expansion, thereby effectively preventing the deformation of the gate plate caused by the deformation of the load-bearing beam;

[0026] (2) The gate of the utility model is composed of overlapping metal plates. There is a horizontal overlapping portion at the overlap of two adjacent metal plates. The overlapping portion can effectively block the glass liquid from flowing out of the first gap, effectively solving the problem of glass liquid flowing out due to the gap between the two adjacent metal plates;

[0027] (3) The metal plate used in the present invention is coated with a heat-insulating ceramic coating, so that the main body of the gate is composed of a composite material composed of metal and ceramic. The ceramic coating has the following functions:

[0028] ① The ceramic coating effectively reduces the heat absorption and heat release rate of the metal plate. Compared with pure steel gate plates, it can greatly reduce the external heat radiation of the gate plate, effectively improving the working environment of the machine changer. In addition, the heat transmitted to the metal plate through the ceramic coating is much smaller, which reduces the temperature difference between the top and bottom, left and right, and front and back of each metal plate, and its expansion tends to be consistent, thereby effectively reducing the distortion of a single metal plate caused by temperature difference.

[0029] ② The affinity between the ceramic coating and the glass liquid is much lower than that of the metal plate. When the gate is extracted, the ceramic coating and the glass liquid do not stick together, which can effectively avoid the risk of crystallized glass damaging the calendering roller;

[0030] ③ When the gate of the present invention is in use, it is the ceramic coating, not the metal plate, that contacts the molten glass liquid, so the metal plate can use various heat-resistant stainless steels containing iron elements, which can greatly reduce the cost of using the gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 —A diagram showing the state of use of a gate in the prior art;

[0032] Figure 2 — is a schematic structural diagram of a lap-jointed composite material gate plate of the present invention;

[0033] Figure 3 -for Figure 2 An enlarged schematic diagram of the upper middle connection block;

[0034] Figure 4 -for Figure 2 An enlarged schematic diagram of the middle and lower connecting blocks;

[0035] Figure 5 -for Figure 2 An enlarged diagram of the lower middle connection block viewed from the bottom up;

[0036] Figure 6 —A diagram showing the use of the overlapping composite material gate of the present utility model;

[0037] Figure 7 — is a schematic diagram of the overlap structure between two adjacent metal plates when viewed from the bottom up;

[0038] Figure 8 — is a schematic diagram of the assembly of two adjacent metal plates and the lower connecting block of the utility model.

[0039] The above figure marks: 1-flameproof brick, 2-tail brick, 3-lip brick, 4-calendering roller, 5-steel plate, 6-bearing beam, 7-metal plate, 8-first gap, 9-hanging ring, 10-handrail, 11-connecting rod, 12-upper rod body, 13-lower rod body, 14-nut, 15-thread, 16-upper connecting block, 17-lower connecting block, 18-countersunk hole, 19-second gap, 20-furnace mouth, 21-screw hole. DETAILED DESCRIPTION

[0040] The present invention will be further described below with reference to the accompanying drawings and examples, but these specific implementation schemes do not limit the protection scope of the present invention in any way.

[0041] Example 1

[0042] See also Figure 1-8 A composite gate plate with overlapping structure includes a load-bearing beam 6 and a plurality of overlapping metal plates 7. The metal plates 7 are positioned below the load-bearing beam 6. The sidewalls of adjacent metal plates 7 form a stepped overlapping structure. A first gap 8 is left between the vertical sidewalls of the overlapping joints of adjacent metal plates 7 to provide expansion displacement when the metal plates 7 expand due to heat. A lifting ring 9 is connected to the top of the load-bearing beam 6, and removable handrails 10 are installed on the outer sidewalls of the metal plates 7 at the leading and trailing ends.

[0043] The side walls of the two adjacent metal plates have a stepped overlapping structure as follows: one side wall of the two adjacent metal plates is provided with an L-shaped notch, and the other side wall of the metal plate is provided with an inverted L-shaped notch that matches and overlaps with the L-shaped notch. The L-shaped notch and the inverted L-shaped notch of the two metal plates are buckled together to make the overlapping part of the two adjacent metal plates have a stepped overlapping structure.

[0044] The gate plate is composed of a plurality of metal plates 7 connected in a sequential overlapping manner. Compared with a structure composed of a whole piece of steel plate, it can effectively prevent the risk of the lower ends of the gate plate being warped upward, inward and outward due to inconsistent thermal expansion, and solve the problem of glass liquid overflowing due to deformation when the gate plate is composed of a whole piece of steel plate; and there is a horizontal overlapping part at the overlapping part of the adjacent two metal plates, which can effectively block the glass liquid from flowing out of the first gap, effectively solving the problem of glass liquid flowing out due to the gap between the two adjacent metal plates.

[0045] The load-bearing beam 6 and each metal plate 7 are connected via a vertically arranged connecting rod 11 . The upper end of the connecting rod 11 is detachably connected to the load-bearing beam 6 , and the lower end thereof is detachably connected to each metal plate 7 .

[0046] The specific structure of the connecting rod 11, which is detachably connected to the load-bearing beam 6 and the metal plate 7, is as follows: the connecting rod 11 includes an upper rod body 12 and a lower rod body 13 that are integrally formed. The upper rod body 12 passes through the load-bearing beam 6, and the rod body extending above the load-bearing beam 6 is detachably connected to the load-bearing beam 6 through a nut 14. The bottom of the lower rod body 13 is processed with a thread 15, and the top of the metal plate 7 is provided with a threaded hole connected to the thread 15.

[0047] The present invention provides a connecting rod 11 between the load-bearing beam 6 and the metal plate 7. In actual application, the top of the connecting rod 11 can be made higher than the top of the flame-blocking brick 1, so that the load-bearing beam 6 is located above the flame-blocking brick 1. Compared with the method of directly connecting the load-bearing beam 6 and the metal plate 7 with bolts, the provision of the connecting rod 11 can effectively increase the height of the load-bearing beam 6, thereby increasing the distance between the load-bearing beam 6 and the lower end of the flame-blocking brick 1, so that the load-bearing beam 6 is away from the high-temperature area of ​​the flame-blocking brick 1, effectively reducing the heat radiation of the load-bearing beam 6, making the heat expansion deformation of the load-bearing beam 6 smaller, reducing the impact on the gate plate at the lower end, and effectively preventing the gate plate from being deformed due to the deformation of the load-bearing beam 6.

[0048] The outer diameter of the lower rod body 13 is greater than the outer diameter of the upper rod body 12 , which can increase the stress strength of the connecting rod 11 and extend its service life.

[0049] The outer surface of the metal plate 7 is coated with a ceramic coating. The thermal conductivity of the ceramic coating is significantly lower than that of the steel plate, and its thermal conductivity is only a few tens of times that of the steel plate, thereby effectively reducing the heat absorption and heat release rate of the metal plate. Compared with the use of pure steel plate, the heat radiation of the gate plate to the outside can be greatly reduced, which can block the heat energy in the furnace from being conducted outward, reduce the temperature of the outside of the metal plate 7, and effectively improve the working environment of the machine change. In addition, due to the low thermal conductivity of the ceramic coating, much less heat is transmitted to the metal plate 7 through the ceramic coating, which reduces the temperature difference between the top and bottom, left and right, and the front and back of each metal plate 7, and their expansion tends to be consistent, thereby effectively reducing the distortion of the single metal plate 7 caused by the temperature difference.

[0050] In addition, since the affinity of the ceramic coating to the glass liquid is much lower than that of the metal plate 7, the affinity of the ceramic material used to the glass liquid is much lower than that of the metal plate. When the gate plate is lifted, the ceramic coating does not adhere to the glass liquid and no icicles are formed, which can prevent the icicles formed by the gate plate adhering to the glass liquid from falling and damaging the calendering roller; at the same time, when the gate plate is in use, it is the ceramic coating, not the metal plate 7, that is in contact with the molten glass liquid, so the metal plate 7 can use various heat-resistant stainless steels containing iron elements, which can greatly reduce the use cost of the gate plate.

[0051] The front and rear side surfaces and lower ends of two adjacent metal plates 7 are respectively connected and fixed to each other by upper connecting blocks 16 and lower connecting blocks 17. The specific structure of the front and rear side surfaces of two adjacent metal plates 7 being connected by upper connecting blocks 16 is as follows: the upper connecting blocks 16 are installed between the front and rear side surfaces of the upper ends of the two adjacent metal plates 7, and the upper connecting blocks 16 are connected to the metal plates 7 by screws.

[0052] The specific structure in which the lower ends of the two adjacent metal plates 7 are connected by the lower connecting block 17 is as follows: the lower ends of the two adjacent metal plates 7 are installed with a lower connecting block 17, and the two adjacent metal plates 7 are connected together by the lower connecting block 17, and a plurality of countersunk holes 18 (specifically 4 in this embodiment) are opened on the lower connecting block 17, and the plurality of countersunk holes are distributed on both sides of the first gap 8, wherein two countersunk holes are located on the left side of the first gap 8, and the two countersunk holes 18 are circular holes, and the other two countersunk holes are located on the right side of the first gap 8, and the two countersunk holes 18 are elliptical long holes, the lower connecting block 17 is provided with screw holes at positions corresponding to the countersunk holes 18, and it is connected to the two adjacent metal plates 7 by screws matching the countersunk holes 18 and the screw holes 21.

[0053] The upper and lower ends of the two adjacent metal plates 7 used in the gate plate are connected by an upper connecting block 16 and a lower connecting block 17 respectively. By combining the lower connecting block 17 with the upper connecting block 16, the two adjacent metal blocks can be fixed, so that each individual metal plate 7 is connected into a whole plate, thereby achieving the purpose of blocking the outflow of glass liquid.

[0054] The setting of the countersunk hole 18 allows the two screws located on the left side of the first gap to be connected with the two matching round holes during use; when the gate plate expands and deforms, the screw displacement can be achieved through the two elliptical long holes located on the right side of the first gap to eliminate the expansion difference between the lower connecting block 17 and the metal plate 7.

[0055] A second gap 19 is left between two adjacent connecting blocks 17 at the lower end of the metal plate 7. The size of the second gap 19 is 2-3 mm, and the gap is used to eliminate the difference in thermal expansion between the metal plate 7 and the connecting block 17.

[0056] The working principle and use method of the overlapping composite material gate of the utility model are as follows:

[0057] When the utility model is working, the upper connecting block 16 and the lower connecting block 17 are first used to overlap and assemble multiple metal plates 7 into a whole metal plate 7, and the metal plate 7 and the load-bearing beam 6 are connected with the connecting rod 11 to complete the assembly of the gate plate; when the gate plate needs to be lowered, the lifting device is used to hook the lifting ring 9 to lower the gate plate to achieve the purpose of blocking the glass liquid, and the adjustment of the gate plate can be controlled by the handrail 10.

[0058] The gate plate is made of multiple metal plates 7 overlapped together, which can effectively solve the problem of gate plate deformation; and it uses a connecting rod 11 to connect the metal plate 7 and the load-bearing beam 6, which can effectively prevent the load-bearing beam 6 from deforming and causing the metal plate 7 connected to it to deform, thereby preventing the gate plate from deforming; the ceramic coating it uses can effectively improve the working environment of workers and solve the problems of deformation and bending caused by the metal plate 7 being easily eroded by glass, the pressure roller being damaged, and the large temperature difference between different parts of the metal plate 7.

[0059] It should be noted that, although the terms “first”, “second”, etc. are used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0060] The words "upper", "lower", "left", "right", "front", "back", "vertical", "inside", "outside", etc. used in this article to describe the orientation or position are for the convenience of explanation based on the orientation or position relationship shown in the drawings. In actual devices, these orientations may be different due to the placement of the device. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0061] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A lap-jointed composite gate plate, comprising a load-bearing beam and a plurality of metal plates connected in a lap-jointed manner, wherein the metal plates are located below the load-bearing beam, and characterized in that: The load-bearing beam and each metal plate are connected via a vertically arranged connecting rod. The upper end of the connecting rod is detachably connected to the load-bearing beam, and the lower end of the connecting rod is detachably connected to each metal plate.

2. The overlapping composite gate plate according to claim 1, characterized in that: The outer surface of the metal plate is coated with a ceramic coating.

3. The overlapping composite material gate plate according to claim 1, characterized in that: The side walls of two adjacent metal plates are in a stepped overlapping structure, and a first gap is left between the vertical side walls at the overlapping portion of the two adjacent metal plates.

4. The overlapping composite material gate plate according to claim 3, characterized in that: One side wall of the adjacent metal plates is provided with an L-shaped notch, and the other side wall of the adjacent metal plates is provided with an inverted L-shaped notch that matches and overlaps the L-shaped notch, so that the overlap of the adjacent metal plates presents a stepped overlap structure.

5. The overlapping composite material gate plate according to claim 3, characterized in that: The front and rear side surfaces of the two adjacent metal plates are connected by a detachable upper connecting block, and the lower ends of the two adjacent metal plates are equipped with a detachable lower connecting block.

6. The overlapping composite gate plate according to claim 5, characterized in that: The lower connecting block is provided with a plurality of countersunk holes, and the plurality of countersunk holes are distributed on both sides of the first gap. The countersunk holes located on the left side of the first gap are round holes, and the countersunk holes located on the right side of the first gap are elliptical long holes. The lower connecting block is provided with screw holes at positions corresponding to the countersunk holes, and it is connected to the two adjacent metal plates by screws matching the countersunk holes and screw holes.

7. The overlapping composite material gate plate according to claim 5, characterized in that: A second gap is left between two adjacent lower connecting blocks located at the lower end of the metal plate.

8. The overlapping composite material gate plate according to claim 1, characterized in that: The connecting rod includes an upper rod body and a lower rod body that are integrally formed. The upper rod body passes through the load-bearing beam, and the rod body extending above the load-bearing beam is connected to the load-bearing beam through a nut. The bottom outer wall of the lower rod body is processed with a thread, and the top of the metal plate is provided with a threaded hole connected to the thread.

9. The overlapping composite gate plate according to claim 8, characterized in that: The outer diameter of the lower rod body is greater than the outer diameter of the upper rod body.

10. The overlapping composite gate plate according to claim 1, characterized in that: The top of the load-bearing beam is connected with a hanging ring, and the outer side walls of the metal plates at the head and tail ends are installed with detachable handrails.

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