Double-layer roller hearth type heating furnace

Abstract

The utility model provides a double-layer roller hearth type heating furnace, and belongs to the technical field of heating furnaces. The double-layer roller hearth type heating furnace comprises a box body, a first transmission roller, a first supporting seat, a first connecting cylinder, a first connecting shaft, a first bearing, a second transmission roller, a second supporting seat, a second connecting cylinder, a second connecting shaft and a second bearing, the multiple first transmission rollers and the multiple second transmission rollers can rotate in the box body, the second transmission rollers are located below the first transmission rollers, so that the multiple first transmission rollers and the multiple second transmission rollers can drive materials to move in the box body, and therefore the space of the box body is fully utilized; and meanwhile, more materials can be heated in the unit time, so that the energy consumption of the product is reduced, and the use experience of the product is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating furnaces, and in particular relates to a double-layer roller bottom heating furnace. Background Art

[0002] In the field of automobile manufacturing, in order to meet the needs of high-temperature heating and rapid cooling of metal sheets in the hot stamping process, multiple roller bottom heating furnaces are usually arranged together to form a heating tunnel, and the metal sheets are driven to move in the furnace box by drive rollers.

[0003] The prior art (announcement number: CN220230021U) discloses a roller bottom tunnel heating furnace, including a base and a furnace body, a fixing groove is opened on the top of the base, and a first rotating rod is rotatably connected to the front side of one side of the inner wall of the fixing groove, and a second rotating rod is rotatably connected between the two sides of the back side of the inner wall of the fixing groove, gears are fixedly connected to both sides of the surface of the first rotating rod and the second rotating rod, and a chain is transmission-connected between the opposite sides of the two gear surfaces. The utility model relates to the technical field of heating furnaces.

[0004] In the prior art, the transmission roller is rotated to drive the material to move. When the transmission roller drives the small-volume material to move, the material cannot occupy the space in the heating furnace, so the space inside the heating furnace cannot be fully utilized, and more materials cannot be heated and transported in a unit time, which reduces the user experience of the product. Utility Model Content

[0005] In order to solve the problem in the above-mentioned prior art that when the drive roller drives the smaller material to move, the material cannot occupy the space in the heating furnace, and thus cannot fully utilize the space inside the heating furnace, which results in the inability to heat and transport more materials per unit time, thereby reducing the product usage experience, the utility model provides a double-layer roller bottom heating furnace, which enables multiple first drive rollers and multiple second drive rollers to rotate in the box body, and the second drive roller is located below the first drive roller, so that the multiple first drive rollers and multiple second drive rollers can respectively drive the material to move in the box body, thereby fully utilizing the space of the box body to improve the product's transportation capacity per unit time, and at the same time, it can also achieve heating of more materials per unit time, thereby reducing the product's energy consumption and improving the product usage experience. Its specific technical scheme is:

[0006] A double-layer roller bottom heating furnace, the double-layer roller bottom heating furnace comprises: a box body, a first transmission roller, a first support seat, a first connecting cylinder, a first connecting shaft, a first bearing, a second transmission roller, a second support seat, a second connecting cylinder, a second connecting shaft and a second bearing; the box body is a hollow cavity with openings at both ends; a plurality of first transmission rollers pass through the two side walls of the box body, and the plurality of first transmission rollers are on the same plane; a first supporting groove is arranged in the first supporting seat, the first supporting groove is trapezoidal, two first supporting seats are fixed on both sides of the box body, and the first supporting seat is located below the first transmission roller; the first connecting cylinder is a hollow cavity with an opening at one end, the end of the first transmission roller is embedded in the first connecting cylinder, and the first connecting cylinder is connected to the first transmission roller; the first connecting shaft is connected to the first connecting cylinder; the first bearing sleeve is arranged on The outer side of the first connecting shaft, and the first bearing is embedded in the first supporting groove; multiple second transmission rollers pass through the two side walls of the box body, multiple second transmission rollers are on the same plane, and the second transmission roller is located above the first transmission roller; a second supporting groove is arranged in the second supporting seat, the second supporting groove is trapezoidal, two second supporting seats are fixed on both sides of the box body, and the second supporting seat is located below the second transmission roller; the second connecting cylinder is a hollow cavity with an opening at one end, the end of the second transmission roller is embedded in the second connecting cylinder, and the second connecting cylinder is connected to the second transmission roller; the second connecting shaft is connected to the second connecting cylinder; the second bearing is sleeved on the outer side of the second connecting shaft, and the second bearing is embedded in the second supporting groove; wherein, there is a gap between the first transmission roller and the first supporting seat, and there is a gap between the second transmission roller and the second supporting seat.

[0007] In addition, the double-layer roller hearth heating furnace in the above technical solution provided by the utility model may also have the following additional technical features:

[0008] In the above technical solution, the double-layer roller bottom heating furnace also includes: a first limit screw and a second limit screw; at least two first limit screws are fixed in the first support groove, and at least two first limit screws are located on the outside of the first bearing; at least two second limit screws are fixed in the second support groove, and at least two second limit screws are located on the outside of the second bearing.

[0009] In the above technical scheme, the double-layer roller bottom heating furnace also includes: a first transmission shaft, a third bearing, a first connecting frame, a first mounting seat, a second transmission shaft, a first bevel gear and a second bevel gear; the first transmission shaft is connected to the first connecting shaft; the third bearing is sleeved on the outside of the first transmission shaft, and the third bearing is placed in the first support groove; multiple first connecting frames are connected to one side wall of the box body, and the first connecting frame is located below the first support seat; the first mounting seat is fixed on multiple first connecting frames; the second transmission shaft is embedded in the first mounting seat, and the second transmission shaft is rotatably connected to the first mounting seat; multiple first bevel gears are respectively sleeved on the outside of multiple first transmission shafts, and multiple first bevel gears are located above the second transmission shaft; multiple second bevel gears are sleeved on the outside of the second transmission shaft, and the second bevel gears are meshed with the first bevel gears.

[0010] In the above technical scheme, the double-layer roller bottom heating furnace also includes: a first motor seat, a first motor body, a first sprocket, a second sprocket and a first chain; the first motor seat is a hollow cavity, the first motor seat is fixed at the bottom of the first mounting seat, and the first motor seat is communicated with the first mounting seat; the first motor body is provided with a first output shaft, and the first motor body is fixed on the outside of the first motor seat; the first sprocket is sleeved on the outside of the first output shaft of the first motor body, and the first sprocket is embedded in the first motor seat; the second sprocket is sleeved on the outside of the second transmission shaft, and the second sprocket is embedded in the first mounting seat; the first chain is simultaneously sleeved on the outside of the first sprocket and the second sprocket.

[0011] In the above technical solution, the double-layer roller bottom heating furnace also includes: a first mounting frame, a first protective cover and a first handle; the first mounting frame is L-shaped, and multiple first mounting frames are fixed on the side wall of the box body; the first protective cover is L-shaped, one end of the first protective cover is placed on multiple first mounting frames, and the other end of the first protective cover is placed on the first mounting seat, and the first protective cover is wound around the outside of the first bevel gear and the second bevel gear; the first handle is U-shaped, and the first handle is connected to the first protective cover.

[0012] In the above technical scheme, the double-layer roller bottom heating furnace also includes: a third transmission shaft, a fourth bearing, a second connecting frame, a second mounting seat, a fourth transmission shaft, a third bevel gear and a fourth bevel gear; the third transmission shaft is connected to the second connecting shaft; the fourth bearing is sleeved on the outside of the third transmission shaft, and the fourth bearing is placed in the second support groove; multiple second connecting frames are connected to the other side wall of the box body, and the second connecting frame is located below the second support seat; the second mounting seat is fixed on multiple second connecting frames; the fourth transmission shaft is embedded in the second mounting seat, and the fourth transmission shaft is rotatably connected to the second mounting seat; multiple third bevel gears are respectively sleeved on the outside of multiple third transmission shafts, and multiple third bevel gears are located above the fourth transmission shaft; multiple fourth bevel gears are sleeved on the outside of the fourth transmission shaft, and the fourth bevel gears are meshed with the third bevel gears.

[0013] In the above technical solution, the double-layer roller bottom heating furnace also includes: a motor frame, a second motor body, a third sprocket, a fourth sprocket and a second chain; the motor frame is fixed on the side wall of the box body; the second motor body is provided with a second output shaft, and the second motor body is fixed on the motor frame; the third sprocket is mounted on the outside of the second output shaft of the second motor body; the fourth sprocket is mounted on the outside of the fourth transmission shaft; the second chain is simultaneously mounted on the outside of the third sprocket and the fourth sprocket.

[0014] In the above technical solution, the double-layer roller bottom heating furnace also includes: a second mounting frame, a second protective cover and a second handle; the second mounting frame is L-shaped, and multiple second mounting frames are fixed on the side wall of the box body; the second protective cover is L-shaped, one end of the second protective cover is placed on multiple second mounting frames, and the other end of the second protective cover is placed on the second mounting seat, and the second protective cover is wrapped around the outside of the third bevel gear and the fourth bevel gear; the second handle is U-shaped, and the second handle is connected to the second protective cover.

[0015] In the above technical solution, the double-layer roller bottom heating furnace also includes: insulation bricks and mounting grooves; the insulation bricks are triangular, multiple insulation bricks are embedded in the box, multiple insulation bricks are placed at the bottom of the box, and multiple insulation bricks are located below multiple first drive rollers; the mounting groove is set at the bottom of the box, and at least part of the insulation bricks are embedded in the mounting groove.

[0016] In the above technical solution, the diameter of the first transmission roller is 90-150 mm, and the diameter of the second transmission roller is 90-150 mm.

[0017] Compared with the prior art, the double-layer roller hearth heating furnace of the utility model has the following beneficial effects:

[0018] 1. By sleeve-mounting the first bearing on the outside of the first connecting shaft, sleeve-mounting the second bearing on the outside of the second connecting shaft, and respectively embedding the first bearing and the second bearing into the first support groove and the second support groove, the first support seat and the second support seat respectively support the first connecting shaft and the second connecting shaft, thereby supporting the first transmission roller and the second transmission roller, so as to improve the rotation stability of the first transmission roller and the second transmission roller. By enabling multiple first transmission rollers and multiple second transmission rollers to rotate in the box body, and enabling the second transmission roller to be located below the first transmission roller, multiple first transmission rollers and multiple second transmission rollers can respectively drive the materials to move in the box body, thereby fully utilizing the space of the box body to improve the conveying capacity of the product per unit time, and at the same time, more materials can be heated per unit time, thereby reducing the energy consumption of the product, so as to improve the use experience of the product. Moreover, since the first bearing and the second bearing are both located outside the box, compared to installing the first bearing and the second bearing in the box and supporting the first transmission roller and the second transmission roller respectively, the first bearing and the second bearing located outside the box can utilize the heat insulation component in the box to avoid the first bearing and the second bearing being overheated and causing damage to the first bearing and the second bearing, thereby improving the quality of the product.

[0019] 2. By fixing at least two first limit screws in the first support groove and at least two first limit screws located on the outside of the first bearing, multiple first limit screws are used to limit the first bearing, thereby preventing the first bearing from moving in the horizontal direction, thereby preventing the first transmission roller from swaying, and improving the rotation stability of the first transmission roller. By fixing at least two second limit screws in the second support groove and at least two second limit screws located on the outside of the second bearing, multiple second limit screws are used to limit the second bearing, thereby preventing the second bearing from moving in the horizontal direction, thereby preventing the second transmission roller from swaying, and improving the rotation stability of the second transmission roller.

[0020] 3. By respectively mounting multiple first bevel gears on the outside of multiple first transmission shafts, mounting multiple second bevel gears on the outside of the second transmission shaft, and making the second bevel gears mesh with the first bevel gears, when the second transmission shaft is rotated, the second transmission shaft drives the first transmission shaft to rotate through the first bevel gears and the second bevel gears, thereby providing power for rotating the first connecting shaft and the first transmission roller.

[0021] 4. By mounting the first sprocket on the outside of the first output shaft of the first motor body, mounting the second sprocket on the outside of the second transmission shaft, and mounting the first chain on the outside of the first sprocket and the second sprocket at the same time, it is achieved that when the first motor body drives the first sprocket to rotate, the first sprocket drives the second transmission shaft to rotate through the first chain and the second sprocket, thereby providing power for rotating the second transmission shaft.

[0022] 5. The first protective cover is wound around the outside of the first bevel gear and the second bevel gear to protect the first bevel gear and the second bevel gear, thereby preventing the first bevel gear and the second bevel gear from being damaged due to parts falling between the first bevel gear and the second bevel gear.

[0023] 6. By respectively mounting multiple third bevel gears on the outside of multiple third transmission shafts, mounting multiple fourth bevel gears on the outside of the fourth transmission shaft, and making the fourth bevel gears mesh with the third bevel gears, when the fourth transmission shaft is rotated, the fourth transmission shaft drives the third transmission shaft to rotate through the third bevel gears and the fourth bevel gears, thereby providing power for rotating the second connecting shaft and the second transmission roller.

[0024] 7. By mounting the third sprocket on the outside of the second output shaft of the second motor body, mounting the fourth sprocket on the outside of the fourth transmission shaft, and mounting the second chain on the outsides of the third sprocket and the fourth sprocket at the same time, when the second motor body drives the third sprocket to rotate, the third sprocket drives the fourth transmission shaft to rotate through the second chain and the fourth sprocket, thereby providing power for rotating the fourth transmission shaft.

[0025] 8. By winding the second protective cover around the outside of the third bevel gear and the fourth bevel gear, the second protective cover can protect the third bevel gear and the fourth bevel gear, thereby preventing the third bevel gear and the fourth bevel gear from being damaged due to parts falling between the third bevel gear and the fourth bevel gear.

[0026] 9. By placing a plurality of triangular insulation bricks at the bottom of the box body, and making the plurality of insulation bricks located below the plurality of first transmission rollers, it is prevented that when the first transmission roller or the second transmission roller breaks, the first transmission roller or the second transmission roller falls onto the insulation bricks, thereby preventing the first transmission roller or the second transmission roller from being damaged by heat due to excessively high temperature of the inner wall of the box body, thereby improving product quality.

[0027] 10. By setting the diameter of the first transmission roller and the second transmission roller to 90-150mm, the first transmission roller and the second transmission roller can have a certain strength, so that when the effective heating width of the box is 2.9m to 5m, and the first transmission roller and the second transmission roller are installed in the box and rotated, the first transmission roller and the second transmission roller will not be deformed or broken, thereby improving the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is one of the three-dimensional diagrams of a double-layer roller hearth heating furnace of the utility model;

[0029] Figure 2 for Figure 1A local enlarged view of point A;

[0030] Figure 3 This is the second stereoscopic diagram of a double-layer roller hearth heating furnace of the utility model;

[0031] Figure 4 for Figure 3 A partial enlarged view of point B;

[0032] Figure 5 This is a third stereoscopic diagram of a double-layer roller hearth heating furnace of the utility model;

[0033] Figure 6 for Figure 5 A partial enlarged view of point C;

[0034] Figure 7 This is a fourth perspective view of a double-layer roller hearth heating furnace of the utility model;

[0035] Figure 8 for Figure 7 A partial enlarged view of point D;

[0036] in, Figures 1 to 8 The corresponding relationship between the reference numerals and component names in the figure is:

[0037] 10 housing, 11 first transmission roller, 12 first support seat, 13 first support groove, 14 first connecting cylinder, 15 first connecting shaft, 16 first bearing, 17 second transmission roller, 18 second support seat, 19 second support groove, 20 second connecting cylinder, 21 second connecting shaft, 22 second bearing, 23 first limiting screw, 24 second limiting screw, 25 first transmission shaft, 26 third bearing, 27 first connecting frame, 28 first mounting seat, 29 second transmission shaft, 30 first bevel gear, 31 second bevel gear, 32 first Motor seat, 33 first motor body, 34 first sprocket, 35 second sprocket, 36 first chain, 37 first mounting frame, 38 first protective cover, 39 first handle, 40 third transmission shaft, 41 fourth bearing, 42 second connecting frame, 43 second mounting seat, 44 fourth transmission shaft, 45 third bevel gear, 46 fourth bevel gear, 47 motor frame, 48 second motor body, 49 third sprocket, 50 fourth sprocket, 51 second chain, 52 second mounting frame, 53 second protective cover, 54 second handle, 55 insulation brick. DETAILED DESCRIPTION

[0038] The following is a combination of specific implementation cases and attached Figures 1 to 8 The present invention is further described below, but the present invention is not limited to these embodiments.

[0039] A double-layer roller hearth heating furnace, such as Figures 1 to 8As shown, the double-layer roller bottom heating furnace includes: a box body 10, a first transmission roller 11, a first support seat 12, a first connecting cylinder 14, a first connecting shaft 15, a first bearing 16, a second transmission roller 17, a second support seat 18, a second connecting cylinder 20, a second connecting shaft 21 and a second bearing 22; the box body 10 is a hollow cavity with openings at both ends; a plurality of first transmission rollers 11 pass through the two side walls of the box body 10, and the plurality of first transmission rollers 11 are on the same plane; a first supporting groove 13 is arranged in the first supporting seat 12, and the first supporting groove 13 is trapezoidal, two first supporting seats 12 are fixed on both sides of the box body 10, and the first supporting seat 12 is located below the first transmission roller 11; the first connecting cylinder 14 is a hollow cavity with an opening at one end, the end of the first transmission roller 11 is embedded in the first connecting cylinder 14, and the first connecting cylinder 14 is connected to the first transmission roller 11; the first connecting shaft 15 is connected to the first connecting cylinder 14; the first bearing 16 is sleeved on the first connecting cylinder 14 The outer side of the shaft 15, and the first bearing 16 is embedded in the first support groove 13; multiple second transmission rollers 17 pass through the two side walls of the box body 10, and the multiple second transmission rollers 17 are on the same plane, and the second transmission roller 17 is located above the first transmission roller 11; a second support groove 19 is provided in the second support seat 18, and the second support groove 19 is trapezoidal, and two second support seats 18 are fixed on both sides of the box body 10, and the second support seat 18 is located below the second transmission roller 17; the second connecting cylinder 20 is a hollow cavity with an opening at one end, and the end of the second transmission roller 17 is embedded in the second connecting cylinder 20, and the second connecting cylinder 20 is connected to the second transmission roller 17; the second connecting shaft 21 is connected to the second connecting cylinder 20; the second bearing 22 is sleeved on the outer side of the second connecting shaft 21, and the second bearing 22 is embedded in the second support groove 19; wherein, there is a gap between the first transmission roller 11 and the first support seat 12, and there is a gap between the second transmission roller 17 and the second support seat 18.

[0040] By passing multiple first transmission rollers 11 and multiple second transmission rollers 17 through the two side walls of the box body 10, the multiple first transmission rollers 11 and the multiple second transmission rollers 17 can rotate relative to the box body 10; by fixing two first support seats 12 and two second support seats 18 on both sides of the box body 10, the box body 10 can support the two first support seats 12 and the two second support seats 18, thereby improving the stability of the two first support seats 12 and the two second support seats 18. By embedding the first transmission roller 11 into the first connecting tube 14 and connecting the first connecting tube 14 with the first transmission roller 11, the first transmission roller 11 and the first connecting tube 14 can rotate synchronously. At the same time, the first connecting shaft 15 is connected to the first connecting tube 14 to rotate synchronously with the first connecting shaft 15, thereby realizing the synchronous rotation of the first transmission roller 11, the first connecting tube 14 and the first connecting shaft 15; by sleeved the first bearing 16 on the outside of the first connecting shaft 15 and embedding the first bearing 16 into the first supporting groove 13 of the first supporting seat 12, the first supporting seat 12 supports the first connecting shaft 15, the first connecting tube 14 and the first transmission roller 11 through the first bearing 16, thereby improving the rotation stability of the first transmission roller 11. By embedding the second transmission roller 17 into the second connecting cylinder 20 and connecting the second connecting cylinder 20 with the second transmission roller 17, the second transmission roller 17 and the second connecting cylinder 20 can rotate synchronously. At the same time, the second connecting shaft 21 and the second connecting cylinder 20 are connected to realize the synchronous rotation of the second connecting shaft 21 and the second connecting cylinder 20, thereby realizing the synchronous rotation of the second transmission roller 17, the second connecting cylinder 20 and the second connecting shaft 21; by sleeved the second bearing 22 on the outside of the second connecting shaft 21 and embedding the second bearing 22 in the second support groove 19 of the second support seat 18, the second support seat 18 supports the second connecting shaft 21, the second connecting cylinder 20 and the second transmission roller 17 through the second bearing 22, thereby improving the rotation stability of the second transmission roller 17.

[0041] With the above structure, the first bearing 16 is mounted on the outside of the first connecting shaft 15, the second bearing 22 is mounted on the outside of the second connecting shaft 21, and the first bearing 16 and the second bearing 22 are respectively embedded in the first support groove 13 and the second support groove 19, so that the first support seat 12 and the second support seat 18 can support the first connecting shaft 15 and the second connecting shaft 21 respectively, thereby supporting the first transmission roller 11 and the second transmission roller 17 to improve the stability of the rotation of the first transmission roller 11 and the second transmission roller 17. By making the multiple first transmission rollers 11 and the multiple second transmission rollers 17 all able to rotate in the box 10, and making the second transmission roller 17 below the first transmission roller 11, the multiple first transmission rollers 11 and the multiple second transmission rollers 17 can respectively drive different types of materials to move in the box 10, so as to realize the transportation of different types of materials, so as to improve the transportation capacity of the product per unit time, and at the same time, it can also realize the heating of more materials per unit time, thereby reducing the energy consumption of the product, so as to improve the use experience of the product. Moreover, since the first bearing 16 and the second bearing 22 are both located outside the housing 10, relative to installing the first bearing 16 and the second bearing 22 inside the housing 10 and supporting the first transmission roller 11 and the second transmission roller respectively, the first bearing 16 and the second bearing 22 located outside the housing 10 can utilize the heat insulation component inside the housing 10 to avoid the first bearing 16 and the second bearing 22 from being overheated and causing damage to the first bearing 16 and the second bearing 22, thereby improving the quality of the product.

[0042] Specifically, a plurality of heating tube assemblies are installed in the box body 10 , and the plurality of heating tube assemblies are located above a plurality of driving rollers, so that the heating tube assemblies heat the parts placed on the first driving roller 11 and the second driving roller 17 .

[0043] In the embodiment of the present utility model, Figures 1 to 8 As shown, the double-layer roller bottom heating furnace also includes: a first limit screw 23 and a second limit screw 24; at least two first limit screws 23 are fixed in the first support groove 13, and at least two first limit screws 23 are located on the outside of the first bearing 16; at least two second limit screws 24 are fixed in the second support groove 19, and at least two second limit screws 24 are located on the outside of the second bearing 22.

[0044] By fixing at least two first limit screws 23 in the first support groove 13 and positioning at least two first limit screws 23 on the outside of the first bearing 16, the first bearing 16 can be limited by multiple first limit screws 23, thereby preventing the first bearing 16 from moving in the horizontal direction, thereby preventing the first transmission roller 11 from shifting, and improving the rotation stability of the first transmission roller 11. By fixing at least two second limit screws 24 in the second support groove 19 and positioning at least two second limit screws 24 on the outside of the second bearing 22, the second bearing 22 can be limited by multiple second limit screws 24, thereby preventing the second bearing 22 from moving in the horizontal direction, thereby preventing the second transmission roller 17 from shifting, and improving the rotation stability of the second transmission roller 17.

[0045] In the embodiment of the present utility model, Figures 1 to 8 As shown, the double-layer roller hearth heating furnace also includes: a first transmission shaft 25, a third bearing 26, a first connecting frame 27, a first mounting seat 28, a second transmission shaft 29, a first bevel gear 30 and a second bevel gear 31; the first transmission shaft 25 is connected to the first connecting shaft 15; the third bearing 26 is sleeved on the outer side of the first transmission shaft 25, and the third bearing 26 is placed in the first support groove 13; a plurality of first connecting frames 27 are connected to a side wall of the box body 10, and the first connecting frames 27 are located below the first support seat 12; the first mounting seat 28 is fixed on the plurality of first connecting frames 27; the second transmission shaft 29 is embedded in the first mounting seat 28, and the second transmission shaft 29 is rotatably connected to the first mounting seat 28; a plurality of first bevel gears 30 are respectively sleeved on the outer sides of a plurality of first transmission shafts 25, and a plurality of first bevel gears 30 are located above the second transmission shaft 29; a plurality of second bevel gears 31 are sleeved on the outer sides of the second transmission shaft 29, and the second bevel gears 31 are meshed with the first bevel gears 30.

[0046] The first transmission shaft 25 is connected to the first connecting shaft 15 to achieve synchronous rotation with the first connecting shaft 15; at the same time, the third bearing 26 is mounted on the outside of the first transmission shaft 25 and the third bearing 26 is placed in the first support groove 13, so that the first support seat 12 supports the first transmission shaft 25 through the third bearing 26, thereby improving the stability of the first transmission shaft 25. By connecting multiple first connecting frames 27 to a side wall of the box body 10 and fixing the first mounting seats 28 on the multiple first connecting frames 27, the multiple first connecting frames 27 support the first mounting seats 28, thereby improving the stability of the first mounting seats 28; by embedding the second transmission shaft 29 into the first mounting seats 28 and making the second transmission shaft 29 rotatably connected to the first mounting seats 28, the first mounting seats 28 support the second transmission shaft 29, thereby improving the stability of the rotation of the second transmission shaft 29; by respectively sleeved multiple first bevel gears 30 on the outside of multiple first transmission shafts 25, sleeved multiple second bevel gears 31 on the outside of the second transmission shaft 29, and making the second bevel gears 31 mesh with the first bevel gears 30, when the second transmission shaft 29 is rotated, the second transmission shaft 29 drives the first transmission shaft 25 to rotate through the first bevel gears 30 and the second bevel gears 31, thereby providing power for rotating the first connecting shaft 15 and the first transmission roller 11.

[0047] In the embodiment of the present utility model, Figures 1 to 8 As shown, the double-layer roller bottom heating furnace also includes: a first motor seat 32, a first motor body 33, a first sprocket 34, a second sprocket 35 and a first chain 36; the first motor seat 32 is a hollow cavity, the first motor seat 32 is fixed to the bottom of the first mounting seat 28, and the first motor seat 32 is communicated with the first mounting seat 28; the first motor body 33 is provided with a first output shaft, and the first motor body 33 is fixed to the outside of the first motor seat 32; the first sprocket 34 is sleeved on the outside of the first output shaft of the first motor body 33, and the first sprocket 34 is embedded in the first motor seat 32; the second sprocket 35 is sleeved on the outside of the second transmission shaft 29, and the second sprocket 35 is embedded in the first mounting seat 28; the first chain 36 is sleeved on the outside of the first sprocket 34 and the second sprocket 35 at the same time.

[0048] By fixing the first motor seat 32 on the bottom of the first mounting seat 28 and fixing the first motor body 33 on the outside of the first motor seat 32, the first motor seat 32 supports the first motor body 33, thereby improving the stability of the first motor body 33; by sleeved the first sprocket 34 on the outside of the first output shaft of the first motor body 33, sleeved the second sprocket 35 on the outside of the second transmission shaft 29, and sleeved the first chain 36 on the outside of the first sprocket 34 and the second sprocket 35 at the same time, when the first motor body 33 drives the first sprocket 34 to rotate, the first sprocket 34 drives the second transmission shaft 29 to rotate through the first chain 36 and the second sprocket 35, thereby providing power for rotating the second transmission shaft 29.

[0049] In the embodiment of the present utility model, Figures 1 to 8 As shown, the double-layer roller bottom heating furnace also includes: a first mounting frame 37, a first protective cover 38 and a first handle 39; the first mounting frame 37 is L-shaped, and multiple first mounting frames 37 are fixed on the side wall of the box body 10; the first protective cover 38 is L-shaped, one end of the first protective cover 38 is placed on multiple first mounting frames 37, and the other end of the first protective cover 38 is placed on the first mounting seat 28, and the first protective cover 38 is wound around the outside of the first bevel gear 30 and the second bevel gear 31; the first handle 39 is U-shaped, and the first handle 39 is connected to the first protective cover 38.

[0050] By fixing a plurality of L-shaped first mounting frames 37 on the side wall of the box body 10, placing one end of the L-shaped first protective cover 38 on the plurality of first mounting frames 37, and placing the other end of the first protective cover 38 on the first mounting seat 28, the plurality of first mounting frames 37 and the first mounting seat 28 cooperate to support the first protective cover 38, thereby improving the stability of the first protective cover 38; by making the first protective cover 38 surround the outside of the first bevel gear 30 and the second bevel gear 31, the first protective cover 38 protects the first bevel gear 30 and the second bevel gear 31, thereby preventing the first bevel gear 30 and the second bevel gear 31 from being damaged due to parts falling between the first bevel gear 30 and the second bevel gear 31. By connecting the U-shaped first handle 39 to the first protective cover 38, the staff can move the first protective cover 38 through the first handle 39, thereby reducing the difficulty of moving the first protective cover 38, thereby improving the user experience of the product.

[0051] In the embodiment of the present utility model, Figures 1 to 8As shown, the double-layer roller bottom heating furnace also includes: a third transmission shaft 40, a fourth bearing 41, a second connecting frame 42, a second mounting seat 43, a fourth transmission shaft 44, a third bevel gear 45 and a fourth bevel gear 46; the third transmission shaft 40 is connected to the second connecting shaft 21; the fourth bearing 41 is sleeved on the outer side of the third transmission shaft 40, and the fourth bearing 41 is placed in the second support groove 19; a plurality of second connecting frames 42 are connected to the other side wall of the box body 10, and the second connecting frame 42 is located below the second support seat 18; the second mounting seat 43 is fixed on the plurality of second connecting frames 42; the fourth transmission shaft 44 is embedded in the second mounting seat 43, and the fourth transmission shaft 44 is rotatably connected to the second mounting seat 43; a plurality of third bevel gears 45 are respectively sleeved on the outer sides of a plurality of third transmission shafts 40, and a plurality of third bevel gears 45 are located above the fourth transmission shaft 44; a plurality of fourth bevel gears 46 are sleeved on the outer side of the fourth transmission shaft 44, and the fourth bevel gear 46 is meshed with the third bevel gear 45.

[0052] The third transmission shaft 40 is connected to the second connecting shaft 21 to achieve synchronous rotation of the third transmission shaft 40 and the second connecting shaft 21; at the same time, the fourth bearing 41 is mounted on the outside of the third transmission shaft 40 and the fourth bearing 41 is placed in the first support groove 13, so that the first support seat 12 supports the third transmission shaft 40 through the fourth bearing 41, thereby improving the stability of the third transmission shaft 40. By connecting multiple second connecting frames 42 to the other side wall of the box body 10 and fixing the second mounting seats 43 on the multiple second connecting frames 42, the multiple second connecting frames 42 can support the second mounting seats 43, thereby improving the stability of the second mounting seats 43; by embedding the fourth transmission shaft 44 into the second mounting seats 43 and making the fourth transmission shaft 44 rotatably connected to the second mounting seats 43, the second mounting seats 43 can support the fourth transmission shaft 44, thereby improving the stability of the rotation of the fourth transmission shaft 44; by respectively sleeved multiple third bevel gears 45 on the outside of multiple third transmission shafts 40, sleeved multiple fourth bevel gears 46 on the outside of the fourth transmission shaft 44, and making the fourth bevel gear 46 mesh with the third bevel gear 45, when the fourth transmission shaft 44 is rotated, the fourth transmission shaft 44 drives the third transmission shaft 40 to rotate through the third bevel gear 45 and the fourth bevel gear 46, thereby providing power for rotating the second connecting shaft 21 and the second transmission roller 17.

[0053] In the embodiment of the present utility model, Figures 1 to 8As shown, the double-layer roller bottom heating furnace also includes: a motor frame 47, a second motor body 48, a third sprocket 49, a fourth sprocket 50 and a second chain 51; the motor frame 47 is fixed to the side wall of the box body 10; the second motor body 48 is provided with a second output shaft, and the second motor body 48 is fixed to the motor frame 47; the third sprocket 49 is sleeved on the outer side of the second output shaft of the second motor body 48; the fourth sprocket 50 is sleeved on the outer side of the fourth transmission shaft 44; the second chain 51 is simultaneously sleeved on the outer sides of the third sprocket 49 and the fourth sprocket 50.

[0054] By fixing the motor frame 47 on the side wall of the box body 10 and fixing the second motor body 48 on the motor frame 47, the motor frame 47 supports the second motor body 48, thereby improving the stability of the second motor body 48; by sleeved the third sprocket 49 on the outer side of the second output shaft of the second motor body 48, the fourth sprocket 50 is sleeved on the outer side of the fourth transmission shaft 44, and the second chain 51 is sleeved on the outer sides of the third sprocket 49 and the fourth sprocket 50 at the same time, when the second motor body 48 drives the third sprocket 49 to rotate, the third sprocket 49 drives the fourth transmission shaft 44 to rotate through the second chain 51 and the fourth sprocket 50, thereby providing power for rotating the fourth transmission shaft 44.

[0055] In the embodiment of the present utility model, Figures 1 to 8 As shown, the double-layer roller bottom heating furnace also includes: a second mounting frame 52, a second protective cover 53 and a second handle 54; the second mounting frame 52 is L-shaped, and multiple second mounting frames 52 are fixed on the side wall of the box body 10; the second protective cover 53 is L-shaped, one end of the second protective cover 53 is placed on the multiple second mounting frames 52, and the other end of the second protective cover 53 is placed on the second mounting seat 43, and the second protective cover 53 is wound around the outside of the third bevel gear 45 and the fourth bevel gear 46; the second handle 54 is U-shaped, and the second handle 54 is connected to the second protective cover 53.

[0056] By fixing a plurality of L-shaped second mounting frames 52 on the side wall of the box body 10, placing one end of the L-shaped second protective cover 53 on the plurality of second mounting frames 52, and placing the other end of the second protective cover 53 on the second mounting seat 43, the plurality of second mounting frames 52 and the second mounting seat 43 cooperate to support the second protective cover 53, thereby improving the stability of the second protective cover 53; by making the second protective cover 53 wound around the outside of the third bevel gear 45 and the fourth bevel gear 46, the second protective cover 53 protects the third bevel gear 45 and the fourth bevel gear 46, thereby preventing the third bevel gear 45 and the fourth bevel gear 46 from being damaged due to parts falling between the third bevel gear 45 and the fourth bevel gear 46. By connecting the U-shaped second handle 54 to the second protective cover 53, the staff can move the second protective cover 53 through the second handle 54, thereby reducing the difficulty of moving the second protective cover 53, thereby improving the user experience of the product.

[0057] In the embodiment of the present utility model, Figures 1 to 8 As shown, the double-layer roller bottom heating furnace also includes: insulation bricks 55 and mounting grooves; the insulation bricks 55 are triangular, a plurality of insulation bricks 55 are embedded in the box body 10, a plurality of insulation bricks 55 are placed at the bottom of the box body 10, and a plurality of insulation bricks 55 are located below a plurality of first drive rollers 11; the mounting groove is arranged at the bottom of the box body 10, and at least part of the insulation bricks 55 are embedded in the mounting groove.

[0058] By placing a plurality of triangular insulation bricks 55 at the bottom of the box 10 and making the plurality of insulation bricks 55 located below the plurality of first transmission rollers 11, it is prevented that when the first transmission roller 11 or the second transmission roller 17 breaks, the first transmission roller 11 or the second transmission roller 17 falls on the insulation bricks 55, thereby preventing the first transmission roller 11 or the second transmission roller 17 from being damaged by heat due to the excessively high temperature of the inner wall of the box 10, thereby improving the quality of the product. By setting the installation groove at the bottom of the box 10 and making at least part of the insulation bricks 55 embedded in the installation groove, the insulation bricks 55 are clamped in the box 10, thereby preventing the insulation bricks 55 from being displaced, thereby improving the stability of the insulation bricks 55.

[0059] In the embodiment of the present utility model, Figures 1 to 8 As shown, the diameter of the first transmission roller 11 is 90-150 mm, and the diameter of the second transmission roller 17 is 90-150 mm.

[0060] By setting the diameters of the first drive roller 11 and the second drive roller 17 to 90-150 mm, the first drive roller 11 and the second drive roller 17 can have a certain strength, so that when the effective heating width of the box body 10 is 2.9 m to 5 m, and the first drive roller 11 and the second drive roller 17 are installed in the box body 10 and rotated, the first drive roller 11 and the second drive roller 17 will not be deformed or broken, thereby improving the quality of the product.

[0061] Specifically, the first transmission roller 11 and the second transmission roller 17 are ceramic bodies, and the material of the first transmission roller 11 and the second transmission roller 17 is silicon dioxide.

[0062] Specifically, the box body 10 is formed by welding a steel plate and a steel pipe with a thickness of 5 mm, and the effective heating width of the box body 10 is 2.9 m to 5 m.

[0063] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the description of the present invention, the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A double-layer roller hearth heating furnace, characterized in that: The double-layer roller hearth heating furnace comprises: A box body, wherein the box body is a hollow cavity with openings at both ends; First transmission rollers, a plurality of the first transmission rollers pass through the two side walls of the box body, and the plurality of the first transmission rollers are on the same plane; A first support seat, wherein a first support groove is provided in the first support seat, the first support groove is trapezoidal, two first support seats are fixed on both sides of the box body, and the first support seat is located below the first transmission roller; A first connecting cylinder, wherein the first connecting cylinder is a hollow cavity with an opening at one end, an end of the first transmission roller is embedded in the first connecting cylinder, and the first connecting cylinder is connected to the first transmission roller; A first connecting shaft, the first connecting shaft is connected to the first connecting cylinder; A first bearing, wherein the first bearing is sleeved on an outer side of the first connecting shaft and embedded in the first supporting groove; A second transmission roller, wherein a plurality of the second transmission rollers pass through the two side walls of the box body, the plurality of the second transmission rollers are on the same plane, and the second transmission rollers are located above the first transmission rollers; A second support seat, wherein a second support groove is provided in the second support seat, the second support groove is trapezoidal, two second support seats are fixed on both sides of the box body, and the second support seats are located below the second transmission roller; A second connecting cylinder, wherein the second connecting cylinder is a hollow cavity with an opening at one end, an end of the second transmission roller is embedded in the second connecting cylinder, and the second connecting cylinder is connected to the second transmission roller; A second connecting shaft, the second connecting shaft is connected to the second connecting cylinder; a second bearing, wherein the second bearing is sleeved on an outer side of the second connecting shaft and embedded in the second supporting groove; There is a gap between the first transmission roller and the first support seat, and there is a gap between the second transmission roller and the second support seat.

2. A double-layer roller hearth heating furnace according to claim 1, characterized in that: The double-layer roller hearth heating furnace also includes: First limiting screws, at least two of which are fixed in the first supporting grooves, and at least two of which are located on the outside of the first bearing; Second limiting screws, at least two of the second limiting screws are fixed in the second supporting groove, and at least two of the second limiting screws are located on the outside of the second bearing.

3. The double-layer roller hearth heating furnace according to claim 1, characterized in that: The double-layer roller hearth heating furnace also includes: a first transmission shaft connected to the first connecting shaft; a third bearing, wherein the third bearing is sleeved on the outer side of the first transmission shaft and the third bearing is placed in the first supporting groove; A first connecting frame, wherein a plurality of the first connecting frames are connected to a side wall of the box body, and the first connecting frames are located below the first supporting seat; A first mounting seat, wherein the first mounting seat is fixed on the plurality of first connecting frames; A second transmission shaft, the second transmission shaft is embedded in the first mounting seat, and the second transmission shaft is rotatably connected to the first mounting seat; A first bevel gear, wherein a plurality of the first bevel gears are respectively mounted on the outsides of a plurality of the first transmission shafts, and the plurality of the first bevel gears are located above the second transmission shafts; A plurality of second bevel gears are sleeved on the outside of the second transmission shaft, and the second bevel gears are meshed with the first bevel gears.

4. A double-layer roller hearth heating furnace according to claim 3, characterized in that: The double-layer roller hearth heating furnace also includes: A first motor seat, wherein the first motor seat is a hollow cavity, the first motor seat is fixed to the bottom of the first mounting seat, and the first motor seat is connected to the first mounting seat; A first motor body, wherein the first motor body is provided with a first output shaft, and the first motor body is fixed on the outer side of the first motor seat; A first sprocket, wherein the first sprocket is sleeved on the outer side of the first output shaft of the first motor body, and the first sprocket is embedded in the first motor seat; A second sprocket, wherein the second sprocket is sleeved on the outer side of the second transmission shaft and embedded in the first mounting seat; A first chain is simultaneously sleeved on the outer sides of the first sprocket and the second sprocket.

5. A double-layer roller hearth heating furnace according to claim 4, characterized in that: The double-layer roller hearth heating furnace also includes: A first mounting frame, the first mounting frame is L-shaped, and a plurality of the first mounting frames are fixed on the side wall of the box; A first protective cover, wherein the first protective cover is L-shaped, one end of the first protective cover is placed on the first mounting frames, the other end of the first protective cover is placed on the first mounting seat, and the first protective cover is wound around the outside of the first bevel gear and the second bevel gear; The first handle is U-shaped and connected to the first protective cover.

6. The double-layer roller hearth heating furnace according to claim 1, characterized in that: The double-layer roller hearth heating furnace also includes: a third transmission shaft, the third transmission shaft being connected to the second connecting shaft; a fourth bearing, wherein the fourth bearing is sleeved on the outer side of the third transmission shaft and the fourth bearing is placed in the second supporting groove; A second connecting frame, wherein a plurality of the second connecting frames are connected to the other side wall of the box body, and the second connecting frames are located below the second supporting seat; A second mounting seat, wherein the second mounting seat is fixed on the plurality of second connecting frames; a fourth transmission shaft, the fourth transmission shaft being embedded in the second mounting seat and being rotatably connected to the second mounting seat; A third bevel gear, wherein the plurality of third bevel gears are respectively mounted on the outsides of the plurality of third transmission shafts, and the plurality of third bevel gears are located above the fourth transmission shaft; A fourth helical gear, a plurality of the fourth helical gears are sleeved on the outside of the fourth transmission shaft, and the fourth helical gears are meshed with the third helical gears.

7. A double-layer roller hearth heating furnace according to claim 6, characterized in that: The double-layer roller hearth heating furnace also includes: A motor frame, the motor frame being fixed on a side wall of the box; a second motor body, the second motor body being provided with a second output shaft, and the second motor body being fixed on the motor frame; a third sprocket, the third sprocket being sleeved on the outer side of the second output shaft of the second motor body; A fourth sprocket, wherein the fourth sprocket is sleeved on the outer side of the fourth transmission shaft; A second chain is simultaneously sleeved on the outer sides of the third sprocket and the fourth sprocket.

8. The double-layer roller hearth heating furnace according to claim 7, characterized in that: The double-layer roller hearth heating furnace also includes: A second mounting frame, the second mounting frame is L-shaped, and a plurality of the second mounting frames are fixed on the side wall of the box body; A second protective cover, wherein the second protective cover is L-shaped, one end of the second protective cover is placed on the plurality of second mounting frames, the other end of the second protective cover is placed on the second mounting seat, and the second protective cover is wound around the outside of the third bevel gear and the fourth bevel gear; The second handle is U-shaped and connected to the second protective cover.

9. The double-layer roller hearth heating furnace according to claim 1, characterized in that: The double-layer roller hearth heating furnace also includes: Insulation bricks, the insulation bricks are triangular, a plurality of the insulation bricks are embedded in the box, a plurality of the insulation bricks are placed at the bottom of the box, and a plurality of the insulation bricks are located below a plurality of the first transmission rollers; The mounting groove is arranged at the bottom of the box body, and at least a part of the insulation bricks are embedded in the mounting groove.

10. The double-layer roller hearth heating furnace according to claim 1, characterized in that: The diameter of the first transmission roller is 90-150 mm, and the diameter of the second transmission roller is 90-150 mm.

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