Mesh belt furnace material laying height limit device

Abstract

An embodiment of the present invention provides a mesh belt furnace material laying height limiting device, which relates to the field of heat treatment equipment. The mesh belt furnace material laying height limiting device includes a frame, a scraping roller and a roller driving mechanism. The frame is used to be placed horizontally on the mesh belt conveying channel. The scraping roller is rotatably arranged at the bottom of the frame, and is used to scrape the workpiece on the mesh belt conveying channel. The roller driving mechanism is connected to the scraping roller by transmission, and is used to drive the scraping roller to rotate. By placing the frame horizontally on the mesh belt conveying channel, and driving the scraping roller to rotate by the roller driving mechanism, the scraping roller can scrape the products that are higher than the set value forward or backward, thereby controlling the stacking height of the workpieces, so that the workpieces are evenly laid on the mesh belt. Compared with the prior art, the mesh belt furnace material laying height limiting device provided by the present invention can limit the height of the workpiece, so that the material laying height on the mesh belt surface is uniform and stable, and the workpieces are evenly laid on the mesh belt surface.

Description

Technical Field

[0001] The invention relates to the field of heat treatment equipment, and in particular to a mesh belt furnace material laying height limiting device. Background Art

[0002] With the development of mesh belt furnace technology, customers' requirements for mesh belt furnace products are also increasing. With the improvement of people's requirements for product quality uniformity, the control of mesh belt furnace product temperature is becoming more and more important. In order to better control the product temperature, it is necessary to control the thickness of the product laid on the mesh belt surface to avoid inconsistent product heating temperature due to thickness fluctuations, thereby effectively improving product quality uniformity.

[0003] The mainstream method currently adopted is to control the previous process and intervene manually. By adjusting the discharge speed of the previous process as much as possible, the workpiece can flow to the surface of the mesh belt at a uniform speed. However, because the incoming materials of the previous process are often not uniform, but delivered in batches, the products laid on the surface of the mesh belt cannot be guaranteed to be uniform. Manufacturers generally arrange an operator near the mesh belt laying area to manually lay the uneven workpieces uniformly. However, doing so will increase labor costs, and manual operation will still be unstable, which is not conducive to improving product quality. Summary of the invention

[0004] The purpose of the present invention includes, for example, providing a mesh belt furnace material laying height limiting device, which can limit the height of the workpiece, so that the material laying height on the mesh belt surface is uniform and stable, ensuring that the workpiece is evenly laid on the mesh belt surface.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In the first aspect, an embodiment of the present invention provides a mesh belt furnace material laying height limiting device, comprising a frame, a scraping roller and a roller driving mechanism, wherein the frame is used to be placed horizontally on a mesh belt conveying channel, the scraping roller is rotatably arranged at the bottom of the frame, and is used to scrape the workpiece on the mesh belt conveying channel, and the roller driving mechanism is transmission-connected to the scraping roller, and is used to drive the scraping roller to rotate.

[0007] In an optional embodiment, the scraping roller includes a roller shaft, a sleeve and a plurality of scraping blades. The roller shaft is rotatably disposed at the bottom of the frame and is transmission-connected to the roller driving mechanism. The sleeve is sleeved on the roller shaft and is used to rotate driven by the roller shaft. The plurality of scraping blades are spaced apart on the circumference of the sleeve.

[0008] In an optional embodiment, the plurality of scrapers are evenly distributed on the outer circumference of the sleeve in a divergent manner, and each scraper is arranged along the radial direction of the sleeve.

[0009] In an optional embodiment, the mesh belt furnace material laying height limiting device also includes a roller height adjustment mechanism, and the roller height adjustment mechanism includes an adjusting drive assembly and a roller mounting base plate, and the roller mounting base plate is movably arranged on the frame, and the scraping roller is rotatably connected to the bottom of the roller mounting base plate, and the adjusting drive assembly is arranged on the frame and is transmission-connected to the roller mounting base plate for driving the roller mounting base plate to rise or fall, so as to adjust the height of the scraping roller relative to the mesh belt conveying channel.

[0010] In an optional embodiment, the adjustment drive assembly includes a height adjustment reducer, a height adjustment transmission shaft and a lifting transmission chain. The height adjustment transmission shaft is rotatably arranged on the top of the frame, and the height adjustment reducer is connected to the height adjustment transmission shaft for driving the height adjustment transmission shaft to rotate. A lifting sprocket is also arranged on the height adjustment transmission shaft. One end of the lifting transmission chain is wound around the lifting sprocket, and the other end is connected to the roller mounting base plate for lifting or lowering the roller mounting base plate driven by the lifting sprocket.

[0011] In an optional embodiment, a transmission sprocket is also provided on the height adjustment transmission shaft, a transmission chain is wound around the transmission sprocket, an output sprocket is provided on the output shaft of the height adjustment reducer, and the transmission chain is wound around the output sprocket, so that the output sprocket drives the transmission sprocket to rotate through the transmission chain.

[0012] In an optional embodiment, there are two lifting sprockets, and the two lifting sprockets are arranged at two ends of the height adjustment transmission shaft, and the lifting transmission chain is wound around each of the lifting sprockets.

[0013] In an optional embodiment, the roller mounting base includes a crossbeam and movable mounting plates arranged on both sides of the crossbeam, the lifting transmission chain is fixedly connected to the crossbeam, and the two ends of the scraping roller are rotatably connected to the movable mounting plates respectively.

[0014] In an optional embodiment, mounting seats are provided on both sides of the top of the frame, and both ends of the height adjustment transmission shaft are rotatably mounted on the mounting seats respectively.

[0015] In an optional embodiment, the roller driving mechanism includes a mounting plate, a driving member and a driving chain, the mounting plate is arranged on the roller mounting base plate, the driving member is arranged on the mounting plate, a driving sprocket is arranged on the output shaft of the driving member, a driven sprocket is arranged at the end of the scraping roller, and the driving chain is respectively wound around the driving chain and the driven sprocket.

[0016] The beneficial effects of the embodiments of the present invention include, for example:

[0017] The mesh belt furnace material laying height limiting device provided by the present invention is to place the frame horizontally on the mesh belt conveying channel, and drive the scraping roller to rotate through the roller driving mechanism, so that the scraping roller scrapes the products that are higher than the set value forward or backward, thereby controlling the stacking height of the workpieces, so that the workpieces are evenly laid on the mesh belt. Compared with the prior art, the mesh belt furnace material laying height limiting device provided by the present invention can limit the height of the workpieces, so that the material laying height on the mesh belt surface is uniform and stable, and ensure that the workpieces are evenly laid on the mesh belt surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic structural diagram of a mesh belt furnace material laying height limiting device provided in a first embodiment of the present invention at a first viewing angle;

[0020] Figure 2 for Figure 1 Structural diagram of the middle scraping roller;

[0021] Figure 3 A schematic structural diagram of the mesh belt furnace material laying height limiting device provided in the first embodiment of the present invention at a second viewing angle;

[0022] Figure 4 A schematic structural diagram of the mesh belt furnace material laying height limiting device provided in the first embodiment of the present invention at a third viewing angle;

[0023] Figure 5 A schematic structural diagram of the mesh belt furnace material laying height limiting device provided in the first embodiment of the present invention at a fourth viewing angle;

[0024] Figure 6 A schematic diagram of the partial structure of the mesh belt furnace material laying height limiting device provided in the first embodiment of the present invention at a first viewing angle;

[0025] Figure 7 A schematic diagram of the partial structure of the mesh belt furnace material laying height limiting device provided in the first embodiment of the present invention at a second viewing angle.

[0026] Icons: 100- mesh belt furnace material laying height limiting device; 110- frame; 111- mounting seat; 130- scraping roller; 131- roller shaft; 133- sleeve; 135- scraper; 150- roller drive mechanism; 151- mounting plate; 153- driving member; 155- driving chain; 157- driving protective shell; 170- roller height adjustment mechanism; 171- adjusting drive assembly; 1711- height adjustment reducer; 1713- height adjustment drive shaft; 1714- sprocket protective shell; 1715- lifting drive chain; 1716- driving chain; 1717- lifting sprocket; 1718- driving sprocket; 1719- output sprocket; 173- roller mounting base plate; 1731- crossbeam; 1733- movable mounting plate. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. 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 operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0032] As disclosed in the background technology, in the prior art, workpieces are directly stacked for transportation on the mesh belt furnace conveying channel. For some workpieces that are stacked higher, the thickness of the workpieces at local locations on the mesh belt conveying channel will be too high, making it difficult to control the product temperature, resulting in poor product uniformity and affecting product quality. In response to this situation, the usual solution is manual intervention, that is, arranging operators to use tools to move the stacked workpieces in the paving area so that the workpieces that are stacked too thick can be evenly laid. This processing method is time-consuming and labor-intensive, and manual operation is still unstable, which is not conducive to improving product quality.

[0033] In view of the above problems, the present invention provides a mesh belt furnace paving height limiting device for controlling the thickness of workpieces in the mesh belt paving area, which can ensure that the stacking thickness of the workpieces is below a predetermined height and ensure uniform paving of the workpieces.

[0034] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0035] First embodiment

[0036] Please refer to Figure 1 This embodiment provides a mesh belt furnace material laying height limiting device 100, which can limit the height of the workpiece, so that the material laying height on the mesh belt surface is uniform and stable, ensuring that the workpiece is evenly laid on the mesh belt surface.

[0037] The mesh belt furnace material laying height limiting device 100 provided in this embodiment includes a frame 110, a scraping roller 130, a roller driving mechanism 150 and a roller height adjustment mechanism 170. The frame 110 is used to be placed horizontally on the mesh belt conveying channel. The scraping roller 130 is rotatably arranged at the bottom of the frame 110 for scraping the workpiece on the mesh belt conveying channel. The roller driving mechanism 150 is connected to the scraping roller 130 for driving the scraping roller 130 to rotate. The roller height adjustment mechanism 170 is arranged on the frame 110 and is connected to the scraping roller 130 for driving the scraping roller 130 to rise or fall to adjust the scraping height of the scraping roller 130.

[0038] In this embodiment, the two ends of the frame 110 are respectively placed horizontally on both sides of the mesh belt conveying channel, wherein the mesh belt conveying channel is the material laying area of ​​the mesh belt furnace, and the workpieces to be heated are stacked on the mesh belt furnace conveying channel, and the scraping roller 130 is rotatably arranged at the bottom of the frame 110, and there is a certain gap between it and the bearing surface of the mesh belt furnace conveying channel, and the scraping roller 130 can rotate relative to the frame 110, so as to realize the shifting of the stacked workpieces. Specifically, the scraping roller 130 scrapes the workpieces that are higher than the set value forward, so that the stacked workpieces are laid as flat as possible, and the stacking thickness of the workpieces can be controlled within a certain range, so that the workpieces are evenly laid on the mesh belt, and the uniformity of heating is ensured.

[0039] It should be noted that the installation height of the scraping roller 130 in this embodiment can be set according to different workpiece sizes, wherein the gap between the scraping roller 130 and the mesh belt should be at least larger than the maximum size of a workpiece, so that at least one layer of workpieces can be laid on the mesh belt furnace conveying channel.

[0040] In this embodiment, the rotation direction of the scraping roller 130 should be opposite to the movement direction of the workpiece, so that the workpiece can directly hit the scraping roller 130, and the scraping effect is better.

[0041] join Figure 2 The scraping roller 130 includes a roller shaft 131, a sleeve 133 and a plurality of scraping blades 135. The roller shaft 131 is rotatably disposed at the bottom of the frame 110 and is in transmission connection with the roller driving mechanism 150. The sleeve 133 is sleeved on the roller shaft 131 and is used to rotate under the drive of the roller shaft 131. The plurality of scraping blades 135 are arranged at intervals on the circumference of the sleeve 133. Specifically, the sleeve 133 is fixedly mounted on the roller shaft 131, and the roller driving mechanism 150 is used to drive the roller shaft 131 to rotate, thereby driving the sleeve 133 and the plurality of scraping blades 135 to rotate.

[0042] In this embodiment, a plurality of mounting connecting plates are spaced apart on the sleeve 133, and a plurality of scrapers 135 are fixed to the mounting connecting plates by screws, so that each scraper 135 can be individually disassembled and assembled, which facilitates replacement of the scraper 135 when it is worn or damaged.

[0043] In this embodiment, the plurality of scrapers 135 are uniformly distributed on the outer peripheral surface of the sleeve 133 in a divergent shape, and each scraper 135 is arranged along the radial direction of the sleeve 133. Thus, the plurality of scrapers 135 are distributed around the sleeve 133 in an impeller shape.

[0044] In this embodiment, the scraper blades 135 are in the shape of rectangular plates, and there are six scraper blades 135, which are evenly spaced and arranged on the sleeve 133, and the angle between each two adjacent scraper blades 135 is 60 degrees. Of course, the number of scraper blades 135 here is only an example and is not specifically limited.

[0045] In other preferred embodiments of this embodiment, the scraping action can also be achieved by a fence-type scraper 135. Specifically, the scraper 135 is provided with a plurality of parallel strip grooves, and the distance between two adjacent strip grooves is greater than the minimum size of the workpiece, thereby avoiding missing scraping.

[0046] Combined participation Figures 3 to 5The roller height adjustment mechanism 170 includes an adjustment drive assembly 171 and a roller mounting base plate 173. The roller mounting base plate 173 is movably arranged on the frame 110. The scraping roller 130 is rotatably connected to the bottom of the roller mounting base plate 173. The adjustment drive assembly 171 is arranged on the frame 110 and is transmission-connected to the roller mounting base plate 173 for driving the roller mounting base plate 173 to rise or fall, so as to adjust the height of the scraping roller 130 relative to the mesh belt conveying channel.

[0047] The adjustment drive assembly 171 includes a height adjustment reducer 1711, a height adjustment transmission shaft 1713 and a lifting transmission chain 1715. The height adjustment transmission shaft 1713 is rotatably arranged on the top of the frame 110. The height adjustment reducer 1711 is connected to the height adjustment transmission shaft 1713 for driving the height adjustment transmission shaft 1713 to rotate. A lifting sprocket 1717 is also arranged on the height adjustment transmission shaft 1713. One end of the lifting transmission chain 1715 is wound around the lifting sprocket 1717, and the other end is connected to the roller mounting base plate 173, and is used to lift or lower the roller mounting base plate 173 driven by the lifting sprocket 1717.

[0048] In this embodiment, the height adjustment reducer 1711 is externally connected to a driving motor, which drives the height adjustment transmission shaft 1713 to rotate after being reduced in speed by the height adjustment reducer 1711, and then drives the roller mounting base plate 173 to rise or fall through the lifting transmission chain 1715.

[0049] It should be noted that, in this embodiment, the driving motor is a stepping motor, and one end of the lifting transmission chain 1715 is fixedly arranged on the lifting sprocket 1717, and is wound around the lifting sprocket 1717 as the lifting sprocket 1717 rotates forward, at which time the bottom end of the lifting transmission chain 1715 moves upward, driving the roller mounting bottom plate 173 to rise. The lifting transmission chain 1715 can also be removed from the lifting sprocket 1717 as the lifting sprocket 1717 rotates reversely, at which time the bottom end of the lifting transmission chain 1715 moves downward, driving the roller mounting plate 151 to descend.

[0050] In this embodiment, a transmission sprocket 1718 is also provided on the height adjustment transmission shaft 1713, and a transmission chain 1716 is wound around the transmission sprocket 1718. An output sprocket 1719 is provided on the output shaft of the height adjustment reducer 1711, and the transmission chain 1716 is wound around the output sprocket 1719, so that the output sprocket 1719 drives the transmission sprocket 1718 to rotate through the transmission chain 1716. Specifically, the transmission sprocket 1718 and the output sprocket 1719 are accommodated in a sprocket protection shell 1714, and the transmission chain 1716 is a closed loop chain, which is wound around the transmission sprocket 1718 and the output sprocket 1719 respectively, and the transmission sprocket 1718 can drive the height adjustment transmission shaft 1713 to rotate synchronously. In actual operation, when it is necessary to lift the roller installation base plate 173, the driving motor rotates forward, so that the output sprocket 1719 rotates forward, driving the height adjustment transmission shaft 1713 to rotate forward, so that the lifting transmission chain 1715 is further wound around the lifting sprocket 1717, driving the roller installation base plate 173 to rise. When it is necessary to lower the roller installation base plate 173, the driving motor rotates in reverse, so that the output sprocket 1719 rotates in reverse, driving the height adjustment transmission shaft 1713 to rotate in reverse, so that the lifting transmission chain 1715 is removed from the lifting sprocket 1717, driving the roller installation base plate 173 to descend.

[0051] In this embodiment, there are two lifting sprockets 1717, which are arranged at both ends of the height adjustment transmission shaft 1713, and each lifting sprocket is wound with a lifting transmission chain 1715. Through the lifting sprockets 1717 on both sides, the roller installation base plate 173 is subjected to more uniform force, ensuring that the roller installation base plate 173 can move up and down in the vertical direction.

[0052] It should be noted that, in this embodiment, the transmission sprocket 1718 and the transmission sprocket 1718 are both fixedly disposed on the height adjustment transmission shaft 1713. Specifically, they can be fixed on the height adjustment transmission shaft 1713 by means of pin-key connection or the like.

[0053] In this embodiment, mounting seats 111 are provided on both sides of the top of the frame 110, and the two ends of the height adjustment transmission shaft 1713 are rotatably mounted on the mounting seats 111. Specifically, the top of the frame 110 has a mounting platform, the mounting seat 111 is fixed on the mounting platform by bolts, the mounting seat 111 is provided with bearings, and the two ends of the height adjustment transmission shaft 1713 are respectively mounted on the inner rings of the corresponding bearings. Two clearance holes are also provided on the mounting platform, and the clearance holes correspond to the positions of the lifting sprocket 1717, so that the lifting transmission chain 1715 on the lifting sprocket 1717 can pass through the clearance holes and connect with the lower roller mounting base plate 173.

[0054] Combined participation Figure 6 and Figure 7The roller mounting bottom plate 173 includes a crossbeam 1731 and movable mounting plates 1733 disposed on both sides of the crossbeam 1731. The lifting transmission chain 1715 is fixedly connected to the crossbeam 1731, and both ends of the scraping roller 130 are rotatably connected to the movable mounting plates 1733. Specifically, the crossbeam 1731 and the movable mounting plates 1733 are integrally formed, the bottom end of the lifting transmission chain 1715 is fixed to the crossbeam 1731, and both ends of the roller shaft 131 are rotatably disposed at the bottom of the two movable mounting plates 1733.

[0055] In this embodiment, there are sliding spaces on both sides of the frame 110, and the movable mounting plate 1733 is slidably accommodated in the sliding space. The frame 110 can limit the movable mounting plate 1733 in the horizontal direction, thereby ensuring that the movable mounting plate 1733 can move up and down in the vertical direction, and ensuring that the movable trajectory of the movable mounting plate 1733 is within the vertical direction.

[0056] The roller driving mechanism 150 includes a mounting plate 151, a driving member 153 and a driving chain 155. The mounting plate 151 is arranged on the roller mounting base plate 173, the driving member 153 is arranged on the mounting plate 151, a driving sprocket is arranged on the output shaft of the driving member 153, a driven sprocket is arranged at the end of the scraping roller 130, and the driving chain 155 is respectively wound around the driving chain 155 and the driven sprocket.

[0057] In this embodiment, the driving member 153 includes a motor and a reducer. The motor and the reducer are driven, and a driving sprocket is provided on the output shaft of the reducer. After the speed is reduced by the reducer, the motor drives the sprocket to output power.

[0058] In this embodiment, the mounting plate 151 is fixed on the cross beam 1731 and extends outward. The driving member 153 is fixed to the mounting plate 151 by screws. The driven sprocket is arranged at the end of the roller shaft 131. The driving sprocket drives the driven sprocket to rotate through the driving chain 155, thereby driving the roller shaft 131 to rotate and realizing the scraping action.

[0059] In this embodiment, the driving sprocket and the driven sprocket are both accommodated in a driving protective shell 157 to provide protection.

[0060] In summary, this embodiment provides a mesh belt furnace material laying height limiting device 100, which is arranged horizontally on the mesh belt conveying channel by placing the frame 110, and driving the scraping roller 130 to rotate by the roller driving mechanism 150, so that the scraping roller 130 scrapes the products that are higher than the set value, thereby controlling the stacking height of the workpieces, so that the workpieces are evenly laid on the mesh belt. In addition, by adjusting the driving component 171, the roller mounting bottom plate 173 can be adjusted to rise or fall, thereby adjusting the height of the scraping roller 130, so that the scraping action can be realized for products of various specifications, and it has strong applicability.

[0061] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A mesh belt furnace material laying height limiting device, characterized in that: It comprises a frame, a scraping roller and a roller driving mechanism, wherein the frame is used to be horizontally placed on the mesh belt conveying channel, the scraping roller is rotatably arranged at the bottom of the frame and is used to scrape the workpiece on the mesh belt conveying channel, and the roller driving mechanism is transmission-connected with the scraping roller and is used to drive the scraping roller to rotate; The scraping roller comprises a roller shaft, a sleeve and a plurality of scraping blades, wherein the roller shaft is rotatably arranged at the bottom of the frame and is in driving connection with the roller driving mechanism, the sleeve is sleeved on the roller shaft and is used to rotate under the drive of the roller shaft, and the plurality of scraping blades are arranged at intervals on the circumference of the sleeve; The mesh belt furnace material laying height limiting device also includes a roller height adjustment mechanism, which includes an adjustment drive assembly and a roller mounting base plate, the roller mounting base plate is movably arranged on the frame, and the scraping roller is rotatably connected to the bottom of the roller mounting base plate, the adjustment drive assembly is arranged on the frame and is transmission-connected to the roller mounting base plate, and is used to drive the roller mounting base plate to rise or fall, so as to adjust the height of the scraping roller relative to the mesh belt conveying channel.

2. The mesh belt furnace material laying height limiting device according to claim 1 is characterized in that: The plurality of scrapers are uniformly distributed on the outer circumference of the sleeve in a divergent manner, and each scraper is arranged along the radial direction of the sleeve.

3. The mesh belt furnace material laying height limiting device according to claim 1 is characterized in that: The adjustment drive assembly includes a height adjustment reducer, a height adjustment transmission shaft and a lifting transmission chain. The height adjustment transmission shaft is rotatably arranged on the top of the frame. The height adjustment reducer is connected to the height adjustment transmission shaft for driving the height adjustment transmission shaft to rotate. A lifting sprocket is also arranged on the height adjustment transmission shaft. One end of the lifting transmission chain is wound around the lifting sprocket, and the other end is connected to the roller mounting base plate for lifting or lowering the roller mounting base plate driven by the lifting sprocket.

4. The mesh belt furnace material laying height limiting device according to claim 3 is characterized in that: The height adjustment transmission shaft is also provided with a transmission sprocket, a transmission chain is wound around the transmission sprocket, and the output shaft of the height adjustment reducer is provided with an output sprocket, the transmission chain is wound around the output sprocket, so that the output sprocket drives the transmission sprocket to rotate through the transmission chain.

5. The mesh belt furnace material laying height limiting device according to claim 3 is characterized in that: There are two lifting sprockets, which are arranged at two ends of the height adjustment transmission shaft, and the lifting transmission chain is wound around each lifting sprocket.

6. The mesh belt furnace material laying height limiting device according to claim 3 is characterized in that: The roller installation base plate includes a crossbeam and movable installation plates arranged on both sides of the crossbeam, the lifting transmission chain is fixedly connected to the crossbeam, and the two ends of the scraping roller are rotatably connected to the movable installation plates respectively.

7. The mesh belt furnace material laying height limiting device according to claim 3 is characterized in that: Mounting seats are arranged on both sides of the top of the frame, and both ends of the height adjustment transmission shaft are rotatably mounted on the mounting seats respectively.

8. The mesh belt furnace material laying height limiting device according to claim 2 is characterized in that: The roller driving mechanism includes a mounting plate, a driving member and a driving chain. The mounting plate is arranged on the roller mounting base plate, the driving member is arranged on the mounting plate, a driving sprocket is arranged on the output shaft of the driving member, a driven sprocket is arranged at the end of the scraping roller, and the driving chain is respectively wound around the driving chain and the driven sprocket.

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