Lifting device of vacuum directional solidification furnace

Abstract

The invention provides a lifting device of a vacuum directional solidification furnace, and belongs to the technical field of vacuum directional solidification furnaces. The lifting device of the vacuum directional solidification furnace comprises a mounting seat assembly, a fixed flange, a first lead screw, a second lead screw, a lifting flange, a first threaded hole, a second threaded hole, a lifting shaft and a water cooling crystallizer, the first lead screw or the second lead screw is rotated, so that the first lead screw or the second lead screw drives the lifting flange to move up and down, the two driving mechanisms are switched to work, the first lead screw or the second lead screw is switched to drive the lifting flange to move up and down, and the up-down moving speed of the lifting flange is adjusted; moreover, the lifting flange supports the water-cooling crystallizer through the lifting shaft, so that the lifting flange can drive the water-cooling crystallizer to move up and down, the up-and-down moving speed of the lifting flange is adjusted, the up-and-down moving speed of the water-cooling crystallizer is adjusted, and then the water-cooling crystallizer is adapted to different working condition environments.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vacuum directional solidification furnace, and particularly relates to a lifting device of a vacuum directional solidification furnace. BACKGROUND

[0002] In the related art, the vacuum directional solidification furnace is a modern device for preparing directional solidification and single crystal parts by using intermediate frequency induction heating to melt metal or alloy under vacuum condition, using a specially designed holding furnace and cooling system to form a thermal gradient, and using a downward pulling mechanism.

[0003] When the vacuum directional solidification furnace is used, the lifting device needs to lift the water-cooled crystallizer into a predetermined area; and when the crystallization is performed, the water-cooled crystallizer needs to be moved by pulling in the predetermined area.

[0004] The lifting speed of the conventional lifting device of the vacuum directional solidification furnace is relatively slow, and it takes 5 to 10 minutes. If the lifting speed of the lifting device of the vacuum directional solidification furnace is simply accelerated, the water-cooled crystallizer cannot be moved by pulling for a distance, so that the lifting device cannot be adapted to different industrial environments. SUMMARY

[0005] In order to solve the problem that the lifting speed of the lifting device cannot be adjusted in the prior art, so that the lifting device cannot be adapted to different industrial environments, the present application provides a lifting device of a vacuum directional solidification furnace, which supports the water-cooled crystallizer by the lifting flange through the lifting shaft, so that the lifting flange can drive the water-cooled crystallizer to move up and down, thereby adjusting the speed of the lifting flange moving up and down, adjusting the speed of the water-cooled crystallizer moving up and down, and adapting to different working conditions to improve the applicability of the product. The specific technical scheme is as follows: The application discloses a lifting device of a vacuum directional solidification furnace, which comprises a mounting seat assembly, a fixing flange, a first lead screw, a second lead screw, a lifting flange, a first threaded hole, a second threaded hole, a lifting shaft and a water-cooled crystallizer.

[0006] In addition, the lifting device of the vacuum directional solidification furnace can further have the following additional technical features. In the technical scheme, the lifting device of the vacuum directional solidification furnace further comprises four guide columns and a let-out hole; one end of each of the four guide columns is connected to the top of the mounting seat assembly, the other end of each of the four guide columns is connected to the fixing flange, and the four guide columns pass through the lifting flange; the let-out hole is arranged in the fixing flange and surrounds the outside of the lifting shaft.

[0007] In the technical scheme, the lifting device of the vacuum directional solidification furnace further comprises a first worm gear reducer, a second worm gear reducer and a transmission shaft; the first worm gear reducer is provided with a first output shaft and a first input shaft, the first worm gear reducer is installed in the mounting seat assembly, and the first output shaft of the first worm gear reducer is connected to the first lead screw; the second worm gear reducer is provided with a second output shaft and a second input shaft, the second worm gear reducer is installed in the mounting seat assembly, and the second output shaft of the second worm gear reducer is connected to the second lead screw; the two ends of the transmission shaft are respectively connected to the first input shaft and the second input shaft.

[0008] In the technical scheme, the lifting device of the vacuum directional solidification furnace further comprises a first motor, a first clutch, a connecting key, a first synchronous wheel, a first bearing, a second synchronous wheel and a synchronous belt; the first motor is provided with a first rotating shaft, and the first motor is installed in the mounting seat assembly; the first clutch comprises a first driving wheel and a first driven wheel, and the first driving wheel of the first clutch is sleeved outside the first rotating shaft; the connecting key is embedded in the first driving wheel of the first clutch and the first rotating shaft at the same time; the first synchronous wheel is arranged outside the first rotating shaft, and the first synchronous wheel is connected with the first driven wheel of the first clutch; the first bearing is sleeved outside the first rotating shaft, and the first bearing is embedded in the first synchronous wheel; the second synchronous wheel is connected with the first input shaft of the first worm gear reducer; the synchronous belt is sleeved outside the first synchronous wheel and the second synchronous wheel at the same time; wherein the diameter of the first synchronous wheel is greater than the diameter of the second synchronous wheel.

[0009] In the technical scheme, the lifting device of the vacuum directional solidification furnace further comprises a second motor and a second clutch; the second motor is provided with a second rotating shaft, and the second motor is installed in the mounting seat assembly; the second clutch comprises a second driving wheel and a second driven wheel, the second driving wheel is connected with the second rotating shaft, and the second driven wheel is connected with the second input shaft of the second worm gear reducer.

[0010] In the technical scheme, the lifting device of the vacuum directional solidification furnace further comprises an encoder, a first mounting frame, a first proximity switch, a second mounting frame and a second proximity switch; the input end of the encoder is connected with the second synchronous wheel; the first mounting frame is installed on the side wall of the fixed flange, and the first mounting frame extends to the direction of the mounting seat assembly; the first proximity switch is installed on the first mounting frame; the second mounting frame is installed on the side wall of the lifting flange, and the second mounting frame extends to the direction of the fixed flange; the second proximity switch is installed on the second mounting frame, and the second proximity switch is opposite to the first proximity switch; wherein the second proximity switch is electrically connected with the first motor and the second motor at the same time.

[0011] In the technical scheme, the lifting device of the vacuum directional solidification furnace further comprises a linear bearing, a mounting cover and a connecting bolt; the linear bearing is sleeved outside the guide column, and the linear bearing is embedded in the lifting flange; two mounting covers are arranged outside the guide column, and the two mounting covers are respectively fitted with the upper and lower ends of the linear bearing; at least four connecting bolts pass through the two mounting covers respectively, and the at least four connecting bolts are embedded in the lifting flange at the same time.

[0012] In the technical scheme, the lifting device of the vacuum directional solidification furnace further comprises: a spacer sleeve and a sealing ring; the two spacer sleeves are respectively sleeved on the upper and lower ends of the linear bearing, the two spacer sleeves are respectively attached to the upper and lower sides of the lifting flange, and the two spacer sleeves are respectively attached to the two mounting covers; the sealing ring is an elastic body, the two sealing rings are sleeved on the outer side of the guide column, the two sealing rings are respectively embedded in the two mounting covers, and the two sealing rings are respectively attached to the upper and lower ends of the linear bearing.

[0013] In the technical scheme, the lifting device of the vacuum directional solidification furnace further comprises: a first telescopic protective tube and a second telescopic protective tube; the first telescopic protective tube is an elastic body, one end of the first telescopic protective tube is connected with the lifting flange, the other end of the first telescopic protective tube is connected with the fixed flange, and the two telescopic protective tubes are arranged on the outer side of the first lead screw; the second telescopic protective tube is an elastic body, one end of the second telescopic protective tube is connected with the lifting flange, the other end of the second telescopic protective tube is connected with the fixed flange, and the two telescopic protective tubes are arranged on the outer side of the second lead screw.

[0014] In the technical scheme, the lifting device of the vacuum directional solidification furnace further comprises: a threaded rod, an adjusting nut and a support seat; a third external thread is arranged on the outer wall of the threaded rod, and the four threaded rods pass through the bottom of the mounting seat assembly; a third internal thread is arranged in the adjusting nut, at least two adjusting nuts are sleeved on the outer side of the threaded rod, and the at least two adjusting nuts are respectively attached to the upper and lower sides of the bottom of the mounting seat assembly; the four support seats are respectively connected with the four threaded rods, and the four support seats are located below the mounting seat assembly; wherein the third external thread is matched with the third internal thread.

[0015] Compared with the prior art, the lifting device of the vacuum directional solidification furnace has the following beneficial effects: 1. By connecting the first lead screw and the second lead screw with two driving mechanisms with different output rotation speeds respectively, and connecting the first lead screw and the second lead screw with the lifting flange at the same time, the first lead screw or the second lead screw is rotated to drive the lifting flange to move up and down, so that the two driving mechanisms are switched to work, the first lead screw or the second lead screw drives the lifting flange to move up and down, and the moving speed of the lifting flange is adjusted; and the lifting flange supports the water-cooled crystallizer through the lifting shaft, so that the lifting flange can drive the water-cooled crystallizer to move up and down, the moving speed of the lifting flange is adjusted, the moving speed of the water-cooled crystallizer is adjusted, and the adaptability of the product is improved.

[0016] 2. The four guide columns pass through the lifting flange to realize the lifting flange moving up and down along the four guide columns, to avoid the lifting flange deviating when moving up and down, to improve the stability of the lifting flange moving up and down. The let hole is arranged in the fixed flange, and the let hole is arranged outside the lifting shaft, to realize the lifting shaft moving up and down in the fixed flange, to avoid the interference between the lifting shaft and the fixed flange, to improve the quality of the product.

[0017] 3. The two ends of the transmission shaft are connected with the first input shaft and the second input shaft respectively, to realize the first input shaft and the second input shaft rotating synchronously when one driving mechanism drives the first input shaft to rotate or another driving mechanism drives the second input shaft to rotate, to realize the first output shaft and the second output shaft rotating synchronously, to realize the first lead screw and the second lead screw rotating synchronously, to improve the stability of the lifting flange moving up and down.

[0018] 4. When the first lead screw drives the lifting flange to move up and down, the first clutch is powered, the first driving wheel and the first driven wheel are attracted, to realize the first driving wheel and the first driven wheel rotating synchronously, then the first motor is started, the first motor drives the first driving wheel and the first driven wheel to rotate, to drive the first driven wheel to drive the first synchronous wheel to rotate, when the first synchronous wheel rotates, the first synchronous wheel drives the first input shaft to rotate through the synchronous belt and the second synchronous wheel, to drive the first lead screw to rotate through the first worm reducer, to provide power for the first lead screw rotating. When the second lead screw drives the lifting flange to move up and down, the first driving wheel and the first driven wheel are separated, and the second input shaft driving the second worm reducer is driven to rotate, when the second input shaft rotates, the second input shaft drives the first input shaft to rotate through the transmission shaft, to drive the first input shaft to drive the first synchronous wheel to rotate through the second synchronous wheel and the synchronous belt, at this time, the first synchronous wheel can rotate relative to the first rotating shaft without driving the first rotating shaft to rotate, to avoid the first rotating shaft being damaged.

[0019] 5. The second motor is installed in the mounting seat assembly, the second driving wheel of the second clutch is connected with the second rotating shaft of the second motor, to realize the second motor driving the second rotating shaft to drive the second driving wheel to rotate. When the second clutch is powered, and the second driving wheel and the second driven wheel are attracted, the second motor can drive the second rotating shaft to drive the second driving wheel and the second driven wheel to rotate, to drive the second input shaft to rotate, to drive the second lead screw to rotate through the second worm reducer, to provide power for the second lead screw rotating. At the same time, when the first input shaft drives the second input shaft to rotate through the transmission shaft, the second clutch is not powered, to separate the second driving wheel from the second driven wheel, to avoid the second input shaft driving the second rotating shaft to rotate, to avoid the second rotating shaft being damaged.

[0020] 6. By connecting the input end of the encoder with the second synchronous wheel, the encoder can count the number of rotations of the second synchronous wheel, thereby detecting the distance of the lifting flange moving up and down, and further realizing the accurate control of the distance of the lifting flange moving.

[0021] 7. By sleeving the linear bearing on the outside of the guide column and embedding the linear bearing in the lifting flange, the lifting flange can support the guide column through the linear bearing, so that the lifting flange can move up and down along the guide column through the linear bearing, thereby improving the stability of the lifting flange moving up and down.

[0022] 8. By sleeving two sealing rings on the outside of the guide column, embedding the two sealing rings in the two mounting covers respectively, and making the two sealing rings respectively fit the upper and lower ends of the linear bearing, the sealing ring can seal the linear bearing, thereby preventing the lubricating grease in the linear bearing from flowing out, and improving the user experience of the product.

[0023] 9. By connecting one end of the first telescopic protective tube with the lifting flange and the other end of the first telescopic protective tube with the fixed flange, the lifting flange and the fixed flange cooperate to support the first telescopic protective tube, so that when the lifting flange moves up and down, the first telescopic protective tube telescopes to adapt to the height of the lifting flange, thereby protecting the first lead screw from damage, and improving the user experience of the product. By connecting one end of the second telescopic protective tube with the lifting flange and the other end of the second telescopic protective tube with the fixed flange, the lifting flange and the fixed flange cooperate to support the second telescopic protective tube, so that when the lifting flange moves up and down, the second telescopic protective tube telescopes to adapt to the height of the lifting flange, thereby protecting the second lead screw from damage, and improving the user experience of the product.

[0024] 10. By connecting four supporting seats with four threaded rods respectively and locating the four supporting seats below the mounting seat assembly, the mounting seat assembly is supported on the ground by the four supporting seats to adjust the stability of the product, thereby adjusting the leveling nut to level the mounting seat assembly, further improving the stability of the product. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a perspective view of a lifting device of a vacuum directional solidification furnace of the present application; Figure 2 It is a perspective view of a lifting device of a vacuum directional solidification furnace of the present application; Figure 1 It is a perspective view of a lifting device of a vacuum directional solidification furnace of the present application; Figure 3This is a cross-sectional view of a lifting device for a vacuum directional solidification furnace according to the present invention; Figure 4 for Figure 3 A magnified view of section B; Figure 5 for Figure 3 A magnified view of a portion at point C; in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows: 10 Mounting assembly, 11 Fixed flange, 12 First lead screw, 13 Second lead screw, 14 Lifting flange, 15 Lifting shaft, 16 Water-cooled crystallizer, 17 Guide column, 18 Clearance hole, 19 First worm gear reducer, 20 Second worm gear reducer, 21 Drive shaft, 22 First motor, 23 First clutch, 231 First driving wheel, 232 First driven wheel, 24 Connecting key, 25 First synchronous pulley, 26 First bearing, 27 Second synchronous pulley, 28 Synchronous belt, 29 Second motor, 31 Encoder, 32 First mounting bracket, 34 Second mounting bracket, 36 Linear bearing, 37 Mounting cover, 38 Connecting bolt, 39 Spacer, 40 Sealing ring, 41 First telescopic protective tube, 42 Second telescopic protective tube, 43 Threaded rod, 44 Adjusting nut, 45 Support base. Detailed Implementation

[0026] The following are specific implementation cases and appendices. Figures 1 to 5 The present invention will be further described, but the present invention is not limited to these embodiments.

[0027] A lifting device for a vacuum directional solidification furnace, such as Figures 1 to 5As shown, the lifting device of the vacuum directional solidification furnace includes: a mounting base assembly 10, a fixed flange 11, a first lead screw 12, a second lead screw 13, a lifting flange 14, a first threaded hole, a second threaded hole, a lifting shaft 15, and a water-cooled crystallizer 16; the fixed flange 11 is located above the mounting base assembly 10; the outer wall of the first lead screw 12 is provided with a first external thread, one end of the first lead screw 12 is rotatably connected to the top of the mounting base assembly 10, and the other end of the first lead screw 12 is rotatably connected to the fixed flange 11; the outer wall of the second lead screw 13 is provided with a second external thread, one end of the second lead screw 13 is rotatably connected to the top of the mounting base assembly 10, and the other end of the second lead screw 13 is rotatably connected to the fixed flange 11; the lifting... The lowering flange 14 is located between the mounting base assembly 10 and the fixed flange 11; a first internal thread is provided in the first threaded hole, which is located on one side of the lowering flange 14, and the first lead screw 12 passes through the first threaded hole; a second internal thread is provided in the second threaded hole, which is located on the other side of the lowering flange 14, and the second lead screw 13 passes through the second threaded hole; one end of the lifting shaft 15 is mounted on the lowering flange 14, and the other end of the lifting shaft 15 passes through the fixed flange 11; the water-cooled crystallizer 16 is connected to the other end of the lifting shaft 15, and the water-cooled crystallizer 16 is located above the fixed flange 11; wherein, the first internal thread is adapted to the first external thread, and the second internal thread is adapted to the second external thread.

[0028] By rotatably connecting one end of the first lead screw 12 to the top of the mounting base assembly 10 and rotatably connecting the other end of the first lead screw 12 to the fixed flange 11, the mounting base assembly 10 and the fixed flange 11 cooperate to support the first lead screw 12, thereby enabling the first lead screw 12 to rotate between the mounting base assembly 10 and the fixed flange 11; by rotatably connecting one end of the second lead screw 13 to the top of the mounting base assembly 10 and rotatably connecting the other end of the second lead screw 13 to the fixed flange 11, the mounting base assembly 10 and the fixed flange 11 cooperate to support the second lead screw 13, thereby enabling the second lead screw 13 to rotate between the mounting base assembly 10 and the fixed flange 11. By setting the first threaded hole and the second threaded hole on both sides of the lifting flange 14, and passing the first lead screw 12 and the second lead screw 13 through the first threaded hole and the second threaded hole respectively, the first lead screw 12 and the second lead screw 13 are simultaneously threadedly connected to the lifting flange 14. This allows the first lead screw 12 or the second lead screw 13 to rotate, causing the lifting flange 14 to move up and down. Furthermore, when two drive mechanisms with different output speeds are connected to the first lead screw 12 and the second lead screw 13 respectively, the speed of the lifting flange 14's vertical movement can be adjusted by switching the operation of the two drive mechanisms. By installing one end of the lifting shaft 15 on the lifting flange 14 and connecting the water-cooled crystallizer 16 to the other end of the lifting shaft 15, and positioning the water-cooled crystallizer 16 above the fixed flange 11, the lifting flange 14 supports the water-cooled crystallizer 16 via the lifting shaft 15. This allows the lifting flange 14 to move up and down, driving the water-cooled crystallizer 16 to move up and down via the lifting shaft 15, thereby adjusting the height of the water-cooled crystallizer 16.

[0029] By adopting the above structure, the first lead screw 12 and the second lead screw 13 are respectively connected to two drive mechanisms with different output speeds, and the first lead screw 12 and the second lead screw 13 are simultaneously threadedly connected to the lifting flange 14. This allows the rotation of the first lead screw 12 or the second lead screw 13 to drive the lifting flange 14 to move up and down, thereby switching the operation of the two drive mechanisms to switch the first lead screw 12 or the second lead screw 13 to drive the lifting flange 14 to move up and down, and thus adjusting the up and down movement speed of the lifting flange 14. Moreover, the lifting flange 14 supports the water-cooled crystallizer 16 through the lifting shaft 15, so that the lifting flange 14 can drive the water-cooled crystallizer 16 to move up and down, thereby adjusting the up and down movement speed of the lifting flange 14, and thus adjusting the up and down movement speed of the water-cooled crystallizer 16, thereby adapting to different working environments and improving the applicability of the product.

[0030] In embodiments of the present invention, such as Figures 1 to 5As shown, the lifting device of the vacuum directional solidification furnace also includes: guide columns 17 and clearance holes 18; one end of the four guide columns 17 is connected to the top of the mounting base assembly 10, the other end of the four guide columns 17 is connected to the fixed flange 11, and the four guide columns 17 pass through the lifting flange 14; the clearance holes 18 are provided inside the fixed flange 11, and the clearance holes 18 are arranged around the outside of the lifting shaft 15.

[0031] By connecting one end of the four guide posts 17 to the top of the mounting base assembly 10 and the other end of the four guide posts 17 to the fixed flange 11, the mounting base assembly 10 supports the fixed flange 11 through the four guide posts 17, thereby improving the stability of the fixed flange 11 and, consequently, the rotational stability of the first lead screw 12 and the second lead screw 13. By allowing the four guide posts 17 to pass through the lifting flange 14, the lifting flange 14 can move up and down along the four guide posts 17, thus preventing the lifting flange 14 from shifting during vertical movement and improving the stability of its vertical movement. By setting the clearance hole 18 inside the fixed flange 11 and surrounding the outside of the lifting shaft 15, the lifting shaft 15 can move up and down within the fixed flange 11, thereby preventing interference between the lifting shaft 15 and the fixed flange 11 and improving product quality.

[0032] In embodiments of the present invention, such as Figures 1 to 5 As shown, the lifting device of the vacuum directional solidification furnace further includes: a first worm gear reducer 19, a second worm gear reducer 20, and a drive shaft 21; the first worm gear reducer 19 is provided with a first output shaft and a first input shaft, the first worm gear reducer 19 is installed in the mounting base assembly 10, and the first output shaft of the first worm gear reducer 19 is connected to the first lead screw 12; the second worm gear reducer 20 is provided with a second output shaft and a second input shaft, the second worm gear reducer 20 is installed in the mounting base assembly 10, and the second output shaft of the second worm gear reducer 20 is connected to the second lead screw 13; the two ends of the drive shaft 21 are respectively connected to the first input shaft and the second input shaft.

[0033] By installing a first worm gear reducer 19 within the mounting base assembly 10 and connecting its first output shaft to a first lead screw 12, when a drive mechanism is connected to the first output shaft of the first worm gear reducer 19, the output speed of the drive mechanism is reduced by the first worm gear reducer 19, driving the first output shaft to rotate. This, in turn, enables the first output shaft to drive the first lead screw 12 to rotate, thus providing power for rotating the first lead screw 12. Similarly, by installing a second worm gear reducer 20 within the mounting base assembly 10 and connecting its second output shaft to a second lead screw 13, when another drive mechanism is connected to the second output shaft of the second worm gear reducer 20, the output speed of the drive mechanism is reduced by the second worm gear reducer 20, driving the second output shaft to rotate. This, in turn, enables the second output shaft to drive the second lead screw 13 to rotate, thus providing power for rotating the second lead screw 13. By connecting the two ends of the transmission shaft 21 to the first input shaft and the second input shaft respectively, the first input shaft and the second input shaft can rotate synchronously when one drive mechanism drives the first input shaft to rotate or another drive mechanism drives the second input shaft to rotate, thereby realizing the synchronous rotation of the first output shaft and the second output shaft, and further realizing the synchronous rotation of the first lead screw 12 and the second lead screw 13, so as to improve the stability of the up and down movement of the lifting flange 14.

[0034] Specifically, the reduction ratio of the first worm gear reducer 19 is the same as that of the second worm gear reducer 20.

[0035] In embodiments of the present invention, such as Figures 1 to 5 As shown, the lifting device of the vacuum directional solidification furnace further includes: a first motor 22, a first clutch 23, a connecting key 24, a first synchronous pulley 25, a first bearing 26, a second synchronous pulley 27, and a synchronous belt 28; the first motor 22 is provided with a first rotating shaft and is installed in the mounting base assembly 10; the first clutch 23 includes a first driving pulley 231 and a first driven pulley 232, with the first driving pulley 231 of the first clutch 23 fitted on the outside of the first rotating shaft; the connecting key 24 is embedded in both the first driving pulley 231 and the first rotating shaft of the first clutch 23; the first synchronous pulley 25 is wound around the outside of the first rotating shaft and is connected to the first driven pulley 232 of the first clutch 23; the first bearing 26 is fitted on the outside of the first rotating shaft and is embedded in the first synchronous pulley 25; the second synchronous pulley 27 is connected to the first input shaft of the first worm gear reducer 19; the synchronous belt 28 is fitted on the outside of both the first synchronous pulley 25 and the second synchronous pulley 27; wherein the diameter of the first synchronous pulley 25 is larger than the diameter of the second synchronous pulley 27.

[0036] By mounting the first motor 22 inside the mounting base assembly 10, fitting the first drive wheel 231 of the first clutch 23 onto the outside of the first shaft of the first motor 22, and simultaneously embedding the connecting key 24 into both the first drive wheel 231 and the first shaft, the connecting key 24 connects the first drive wheel 231 and the first shaft together, thereby enabling the first motor 22 to drive the first drive wheel 231 to rotate; by wrapping the first synchronous pulley 25 around the outside of the first shaft and connecting the first synchronous pulley 25 to the first driven wheel 232 of the first clutch 23, the first driven wheel 232 and the first synchronous pulley 25 rotate synchronously; simultaneously, through By mounting the first bearing 26 on the outside of the first rotating shaft and embedding it into the first synchronous pulley 25, the first rotating shaft supports the first synchronous pulley 25 via the first bearing 26, allowing the first synchronous pulley 25 and the first rotating shaft to rotate relative to each other. By connecting the second synchronous pulley 27 to the first input shaft of the first worm gear reducer 19 and simultaneously mounting the synchronous belt 28 on the outer ends of both the first and second synchronous pulleys 25, when the first synchronous pulley 25 rotates, it drives the second synchronous pulley 27 to rotate via the synchronous belt 28, thereby driving the first input shaft of the first worm gear reducer 19 to rotate. By making the diameter of the first synchronous pulley 25 larger than the diameter of the second synchronous pulley 27, the rotational speed of the first synchronous pulley 25 is less than that of the second synchronous pulley 27, thus increasing the rotational speed of the first rotating shaft.

[0037] With the above structure, when preparing to move the first lead screw 12 to drive the lifting flange 14 up and down, the first clutch 23 is energized, causing the first driving wheel 231 and the first driven wheel 232 to engage, thereby enabling the first driving wheel 231 and the first driven wheel 232 to rotate synchronously; then, the first motor 22 is started, causing the first motor 22 to drive the first driving wheel 231 and the first driven wheel 232 to rotate, thereby causing the first driven wheel 232 to drive the first synchronous pulley 25 to rotate; when the first synchronous pulley 25 rotates, the first synchronous pulley 25 drives the first input shaft to rotate through the synchronous belt 28 and the second synchronous pulley 27, thereby driving the first lead screw 12 to rotate after being reduced by the first worm gear reducer 19, thus providing power for rotating the first lead screw 12. When preparing to move the second lead screw 13 to drive the lifting flange 14 up and down, the first driving wheel 231 is separated from the first driven wheel 232, and the second input shaft that drives the second worm gear reducer 20 is rotated. When the second input shaft rotates, it will drive the first input shaft to rotate through the transmission shaft 21, thereby causing the first input shaft to drive the first synchronous wheel 25 to rotate through the second synchronous wheel 27 and the synchronous belt 28. At this time, the first synchronous wheel 25 can rotate relative to the first rotating shaft without driving the first rotating shaft to rotate, thus avoiding damage to the first rotating shaft.

[0038] In embodiments of the present invention, such as Figures 1 to 5As shown, the lifting device of the vacuum directional solidification furnace also includes: a second motor 29 and a second clutch; the second motor 29 is provided with a second rotating shaft and is installed in the mounting base assembly 10; the second clutch includes a second driving wheel and a second driven wheel, the second driving wheel is connected to the second rotating shaft, and the second driven wheel is connected to the second input shaft of the second worm gear reducer 20.

[0039] By installing the second motor 29 within the mounting base assembly 10 and connecting the second driving wheel of the second clutch to the second rotating shaft of the second motor 29, the second motor 29 can drive the second rotating shaft to rotate the second driving wheel. By rotating the second driven wheel to rotate the second input shaft of the second worm gear reducer 20, when the second clutch is energized and the second driving wheel and the second driven wheel are engaged, the second motor 29 can drive the second rotating shaft to rotate the second driving wheel and the second driven wheel, thereby driving the second input shaft to rotate. After being reduced in speed by the second worm gear reducer 20, the second lead screw 13 is driven to rotate, providing power for rotating the second lead screw 13. At the same time, when the first input shaft drives the second input shaft to rotate through the transmission shaft 21, the second clutch is not energized, so that the second driving wheel is disengaged from the second transmission wheel, thereby preventing the second input shaft from driving the second rotating shaft to rotate, and thus preventing damage to the second rotating shaft.

[0040] Specifically, the output speed of the first motor 22 is the same as the output speed of the second motor 29, and the reduction ratio of the first worm gear reducer 19 is the same as the reduction ratio of the second worm gear reducer 20. Therefore, the speed at which the output shaft of the first motor 22 drives the lifting flange 14 to move up and down after being accelerated by the first synchronous pulley 25, the second synchronous pulley 27 and the synchronous belt 28 is greater than the speed at which the second motor 29 drives the lifting flange 14 to move.

[0041] In embodiments of the present invention, such as Figures 1 to 5 As shown, the lifting device of the vacuum directional solidification furnace also includes: an encoder 31, a first mounting bracket 32, a first proximity switch, a second mounting bracket 34, and a second proximity switch; the input end of the encoder 31 is connected to the second synchronous pulley 27; the first mounting bracket 32 ​​is mounted on the side wall of the fixed flange 11 and extends towards the mounting base assembly 10; the first proximity switch is mounted on the first mounting bracket 32; the second mounting bracket 34 is mounted on the side wall of the lifting flange 14 and extends towards the fixed flange 11; the second proximity switch is mounted on the second mounting bracket 34 and is opposite to the first proximity switch; wherein, the second proximity switch is electrically connected to both the first motor 22 and the second motor 29.

[0042] By connecting the input end of encoder 31 to the second synchronous pulley 27, encoder 31 can count the number of rotations of the second synchronous pulley 27, thereby detecting the vertical movement distance of the lifting flange 14 and achieving precise control over the movement distance of the lifting flange 14. By mounting the first mounting bracket 32 ​​on the side wall of the fixed flange 11 and mounting the first proximity switch on the first mounting bracket 32, the first mounting bracket 32 ​​supports the first proximity switch. By mounting the second mounting bracket 34 on the side wall of the lifting flange 14 and mounting the second proximity switch on the second mounting bracket 34, with the second proximity switch facing the first proximity switch, the lifting flange 14 is supported by the second mounting bracket 34. Thus, when the lifting flange 14 moves upward to a predetermined height, the second proximity switch faces the first proximity switch, allowing the first proximity switch to trigger the second proximity switch to open. By simultaneously connecting the second proximity switch to the first motor 22 and the second motor 29, when the second proximity switch is turned on, the second proximity switch can trigger either the first motor 22 or the second motor 29 to stop working, thereby stopping the movement of the lifting flange 14.

[0043] In embodiments of the present invention, such as Figures 1 to 5 As shown, the lifting device of the vacuum directional solidification furnace also includes: a linear bearing 36, a mounting cover 37, and connecting bolts 38; the linear bearing 36 is fitted on the outside of the guide column 17 and is embedded in the lifting flange 14; two mounting covers 37 are wrapped around the outside of the guide column 17 and are respectively attached to the upper and lower ends of the linear bearing 36; at least four connecting bolts 38 pass through the two mounting covers 37 respectively and are simultaneously embedded in the lifting flange 14.

[0044] By mounting the linear bearing 36 on the outside of the guide post 17 and embedding the linear bearing 36 into the lifting flange 14, the lifting flange 14 supports the guide post 17 through the linear bearing 36, thereby enabling the lifting flange 14 to move up and down along the guide post 17 via the linear bearing 36, thus improving the stability of the up and down movement of the lifting flange 14. By abutting the two mounting covers 37 to the upper and lower ends of the linear bearing 36 respectively, and allowing at least four connecting bolts 38 to pass through the two mounting covers 37 respectively, and embedding the at least four connecting bolts 38 into the lifting flange 14 simultaneously, the two mounting covers 37 cooperate to clamp the linear bearing 36, thereby fixing the two mounting covers 37 onto the lifting flange 14, and thus enabling the lifting flange 14 and the two mounting covers 37 to move up and down synchronously.

[0045] In embodiments of the present invention, such as Figures 1 to 5As shown, the lifting device of the vacuum directional solidification furnace also includes: spacers 39 and sealing rings 40; two spacers 39 are respectively fitted on the upper and lower ends of the linear bearing 36, the two spacers 39 are respectively attached to the upper and lower sides of the lifting flange 14, and the two spacers 39 are respectively attached to the two mounting covers 37; the sealing rings 40 are elastic bodies, the two sealing rings 40 are fitted on the outside of the guide column 17, and the two sealing rings 40 are respectively embedded in the two mounting covers 37, and the two sealing rings 40 are respectively attached to the upper and lower ends of the linear bearing 36.

[0046] By fitting two spacers 39 onto the upper and lower ends of the linear bearing 36, respectively, and then fitting them against the upper and lower sides of the lifting flange 14 and the two mounting covers 37, the lifting flange 14 supports the mounting covers 37 through the spacers 39, thereby improving the stability of the mounting covers 37. This, in turn, supports the linear bearing 36, enhancing its stability. Similarly, by fitting two sealing rings 40 onto the outside of the guide post 17, embedding them into the two mounting covers 37, and fitting them against the upper and lower ends of the linear bearing 36, the sealing rings 40 seal the linear bearing 36, preventing the leakage of lubricating grease and improving the user experience.

[0047] In embodiments of the present invention, such as Figures 1 to 5 As shown, the lifting device of the vacuum directional solidification furnace also includes: a first telescopic protective tube 41 and a second telescopic protective tube 42; the first telescopic protective tube 41 is an elastic body, one end of the first telescopic protective tube 41 is connected to the lifting flange 14, the other end of the first telescopic protective tube 41 is connected to the fixed flange 11, and the two telescopic protective tubes are wrapped around the outside of the first lead screw 12; the second telescopic protective tube 42 is an elastic body, one end of the second telescopic protective tube 42 is connected to the lifting flange 14, the other end of the second telescopic protective tube 42 is connected to the fixed flange 11, and the two telescopic protective tubes are wrapped around the outside of the second lead screw 13.

[0048] By connecting one end of the first telescopic protective tube 41 to the lifting flange 14 and the other end of the first telescopic protective tube 41 to the fixed flange 11, the lifting flange 14 and the fixed flange 11 cooperate to support the first telescopic protective tube 41. This allows the first telescopic protective tube 41 to extend and retract as the lifting flange 14 moves up and down, adapting to the height of the lifting flange 14. This, in turn, protects the first lead screw 12 from damage, thus improving the user experience. Similarly, by connecting one end of the second telescopic protective tube 42 to the lifting flange 14 and the other end of the second telescopic protective tube 42 to the fixed flange 11, the lifting flange 14 and the fixed flange 11 cooperate to support the second telescopic protective tube 42. This allows the second telescopic protective tube 42 to extend and retract as the lifting flange 14 moves up and down, adapting to the height of the lifting flange 14. This, in turn, protects the second lead screw 13 from damage, thus improving the user experience.

[0049] In embodiments of the present invention, such as ​ As shown, the lifting device of the vacuum directional solidification furnace also includes: threaded rods 43, adjusting nuts 44, and support seats 45; the outer wall of the threaded rods 43 is provided with a third external thread, and four threaded rods 43 pass through the bottom of the mounting seat assembly 10; the adjusting nuts 44 are provided with a third internal thread, at least two adjusting nuts 44 are fitted on the outside of the threaded rods 43, and at least two adjusting nuts 44 are respectively fitted with the upper and lower sides of the bottom of the mounting seat assembly 10; four support seats 45 are respectively connected to the four threaded rods 43, and the four support seats 45 are located below the mounting seat assembly 10; wherein, the third external thread is adapted to the third internal thread.

[0050] By passing the threaded rod 43 through the bottom of the mounting base assembly 10, multiple adjusting nuts 44 are fitted onto the outside of the threaded rod 43 and respectively abutting against the upper and lower sides of the bottom of the mounting base assembly 10, thereby fixing the threaded rod 43 to the bottom of the mounting base assembly 10. At the same time, by connecting four support seats 45 to the four threaded rods 43 respectively and positioning the four support seats 45 below the mounting base assembly 10, the mounting base assembly 10 is supported on the ground by the four support seats 45 to adjust the stability of the product. This allows the adjusting nuts 44 to be turned to level the mounting base assembly 10, further enhancing the stability of the product.

[0051] In the description of this invention, the term "a plurality of" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0052] In the description of this invention, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this invention, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A lifting device for a vacuum directional solidification furnace, characterized in that The lifting device of the vacuum directional solidification furnace comprises: a mounting seat assembly; a fixing flange located above the mounting seat assembly; a first lead screw provided with a first external thread on an outer wall thereof, one end of the first lead screw being rotatably connected to a top of the mounting seat assembly, and the other end of the first lead screw being rotatably connected to the fixing flange; a second lead screw provided with a second external thread on an outer wall thereof, one end of the second lead screw being rotatably connected to the top of the mounting seat assembly, and the other end of the second lead screw being rotatably connected to the fixing flange; a lifting flange located between the mounting seat assembly and the fixing flange; a first threaded hole provided with a first internal thread therein, the first threaded hole being located on one side of the lifting flange, and the first lead screw penetrating through the first threaded hole; a second threaded hole provided with a second internal thread therein, the second threaded hole being located on the other side of the lifting flange, and the second lead screw penetrating through the second threaded hole; a lifting shaft, one end of the lifting shaft being mounted on the lifting flange, and the other end of the lifting shaft penetrating through the fixing flange; a water-cooled crystallizer connected to the other end of the lifting shaft, and located above the fixing flange; wherein the first internal thread is matched with the first external thread, and the second internal thread is matched with the second external thread.

2. A lifting device for a vacuum directional solidification furnace according to claim 1, characterised in that The lifting device of the vacuum directional solidification furnace further comprises: four guide columns, one end of each of the four guide columns being connected to the top of the mounting seat assembly, the other end of each of the four guide columns being connected to the fixing flange, and the four guide columns penetrating through the lifting flange; a clearance hole provided in the fixing flange, and the clearance hole being located around the outside of the lifting shaft.

3. A lifting device for a vacuum directional solidification furnace according to claim 1, wherein The lifting device of the vacuum directional solidification furnace further comprises: a first worm gear reducer provided with a first output shaft and a first input shaft, the first worm gear reducer being mounted in the mounting seat assembly, and the first output shaft of the first worm gear reducer being connected to the first lead screw; a second worm gear reducer provided with a second output shaft and a second input shaft, the second worm gear reducer being mounted in the mounting seat assembly, and the second output shaft of the second worm gear reducer being connected to the second lead screw; a transmission shaft, two ends of the transmission shaft being respectively connected to the first input shaft and the second input shaft.

4. A lifting device for a vacuum directional solidification furnace according to claim 3, wherein The lifting device of the vacuum directional solidification furnace further comprises: a first motor provided with a first rotating shaft, the first motor being mounted in the mounting seat assembly; a first clutch comprising a first driving wheel and a first driven wheel, the first driving wheel of the first clutch being sleeved around the outside of the first rotating shaft; a connecting key simultaneously embedded in the first driving wheel of the first clutch and the first rotating shaft; a first synchronous wheel located around the outside of the first rotating shaft, and connected to the first driven wheel of the first clutch; a first synchronous wheel located around the outside of the first rotating shaft, and connected to the first driven wheel of the first clutch; A first bearing is sleeved outside the first rotating shaft and embedded in the first synchronous wheel; A second synchronous wheel is connected with the first input shaft of the first worm gear reducer; A synchronous belt is sleeved outside the first synchronous wheel and the second synchronous wheel; The diameter of the first synchronous wheel is greater than the diameter of the second synchronous wheel.

5. A lifting device for a vacuum directional solidification furnace according to claim 4, wherein, The lifting device of the vacuum directional solidification furnace further comprises: A second motor is provided with a second rotating shaft and is installed in the mounting seat assembly; A second clutch comprises a second driving wheel and a second driven wheel, the second driving wheel is connected with the second rotating shaft, and the second driven wheel is connected with the second input shaft of the second worm gear reducer.

6. A lifting device for a vacuum directional solidification furnace according to claim 5, wherein The lifting device of the vacuum directional solidification furnace further comprises: An encoder is connected with the second synchronous wheel; A first mounting bracket is installed on the side wall of the fixed flange and extends towards the mounting seat assembly; A first proximity switch is installed on the first mounting bracket; A second mounting bracket is installed on the side wall of the lifting flange and extends towards the fixed flange; A second proximity switch is installed on the second mounting bracket and opposite to the first proximity switch; The second proximity switch is electrically connected with the first motor and the second motor.

7. A lifting device for a vacuum directional solidification furnace according to claim 2, wherein The lifting device of the vacuum directional solidification furnace further comprises: A linear bearing is sleeved outside the guide column and embedded in the lifting flange; Two mounting covers are arranged outside the guide column and respectively match the upper and lower ends of the linear bearing; At least four connecting bolts are respectively inserted into the lifting flange through the two mounting covers.

8. A lifting device for a vacuum directional solidification furnace according to claim 7, characterised in that, The lifting device of the vacuum directional solidification furnace further comprises: Two spacers are sleeved outside the upper and lower ends of the linear bearing, respectively match the upper and lower sides of the lifting flange, and respectively match the two mounting covers; Two sealing rings are elastic bodies, are sleeved outside the guide column, and are respectively embedded in the two mounting covers and respectively match the upper and lower ends of the linear bearing.

9. A lift device for a vacuum directional solidification furnace according to claim 2, wherein The lifting device of the vacuum directional solidification furnace further comprises: A first telescopic protective tube is an elastic body, one end of the first telescopic protective tube is connected with the lifting flange, the other end of the first telescopic protective tube is connected with the fixed flange, and the two telescopic protective tubes are arranged outside the first lead screw; A second telescopic protective tube is made of an elastic body, one end of the second telescopic protective tube is connected with the lifting flange, the other end of the second telescopic protective tube is connected with the fixed flange, and the two telescopic protective tubes are arranged on the outer side of the second lead screw.

10. A lifting device for a vacuum directional solidification furnace according to claim 9, wherein, The lifting device of the vacuum directional solidification furnace further comprises: Threaded rods, outer walls of the threaded rods are provided with third external threads, and the four threaded rods pass through the bottom of the mounting seat assembly; Adjusting nuts, the adjusting nuts are provided with third internal threads, at least two adjusting nuts are sleeved on the outer sides of the threaded rods, and the at least two adjusting nuts are respectively attached to the upper and lower sides of the bottom of the mounting seat assembly; Supporting seats, the four supporting seats are respectively connected with the four threaded rods, and the four supporting seats are located below the mounting seat assembly; The third external threads are matched with the third internal threads.

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