A linear crucible lifting device

Abstract

The present application relates to the technical field of crucible hot processing, in particular to a linear type crucible lifting device, which comprises a main stand, a lifting clamp assembly and a clamp rod assembly, the surface of the main stand is provided with a lifting base, one side of the lifting base is fixedly provided with a fixing seat for supporting the lifting clamp assembly, the surface of the fixing seat is fixedly provided with a driving motor, the lifting clamp assembly comprises a driving box, a main gear disc and a plurality of dynamic ear plates and a linkage rod which are located inside the driving box, the inside of the driving box is fixedly provided with a positioning ring, and the driving box and the positioning ring are connected through a plurality of rotating pins. In the present application, the radial movement of the plurality of clamp rod assemblies is controlled through the main gear disc and the linkage rod on the surface of the lifting clamp assembly, one of the outer expansion type inner support positioning and the outer clamping positioning can be selected according to different specifications of the crucible, so as to non-destructively process the crucible and prevent it from falling off, thereby improving the stability during the lifting process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crucible heat processing, in particular to a linear crucible lifting device. BACKGROUND

[0002] In industrial production processes, crucibles, as a common high-temperature container, are widely used in metal smelting, crystal growth and other high-temperature processes. The handling and lifting of crucibles are key links in the operation, especially in high-temperature environments, traditional manual or semi-automatic lifting devices often have difficulty in ensuring safety and operational efficiency. At present, there are various devices for lifting crucibles on the market, but there are generally the following problems and technical defects:

[0003] Firstly, the lifting method of the hole on the surface of the crucible: this lifting method requires a reserved hole position on the surface of the crucible, and the lifting rod completes the lifting by inserting into the crucible hole. The main problem of this method is that the integrity of the crucible surface is damaged, and the crucible hole is easy to accumulate residues such as metal liquid or molten material during high-temperature operation, causing hole blockage or difficulty in cleaning, increasing the complexity of subsequent operations. At the same time, the existence of the hole may cause the local structural strength of the crucible to weaken, shortening the service life of the crucible.

[0004] Secondly, the lifting method of the clamp: this crucible lifting method is through a specially designed clamp, using the arc-shaped clamping ears of the clamping mechanism to cooperate with the outer wall of the crucible for lifting. Although this method avoids direct damage to the crucible body, its application range is relatively narrow, and it can usually only match crucibles of a specific diameter. Especially in some heating furnaces, due to the size of the furnace mouth and the outer diameter of the crucible, the arc-shaped clamping ears are difficult to function in the limited space, resulting in unstable clamping process, and even the possibility of lifting failure or clamping ears unable to enter the heating furnace, limiting its flexibility and universality in actual application.

[0005] In addition, these traditional lifting methods all have a common defect, that is, the lack of real-time monitoring of the stress state of the crucible during lifting. In high-temperature and high-load operating environments, the weight of the crucible and the complexity of the operation lead to the possibility of insufficient clamping force or slipping during lifting, which will affect the safety and stability of the lifting operation and increase the safety risk of the operator.

[0006] In view of the above deficiencies in the prior art, the present application provides a linear crucible lifting device, which aims to solve the limitations of traditional crucible lifting devices in use by optimizing the structure and introducing an intelligent control system. By using a flexible coupling and a feedback detection assembly, real-time monitoring and automatic adjustment of the crucible clamping state are achieved, ensuring the stability during lifting. At the same time, the device has the ability to adapt to different specifications of crucibles, and can flexibly adjust the clamping mode according to the actual size of the crucible, effectively improving the applicability and operation efficiency of the equipment, and ensuring the safety and reliability of the lifting process. SUMMARY

[0007] The present application provides a linear crucible lifting device that can achieve automatic clamping and lifting of the crucible, with high safety, strong stability and wide adaptability. The specific implementation is as follows:

[0008] In one possible implementation, it includes a main stand, a lifting clamp assembly and a clamp rod assembly. The surface of the main stand is provided with a lifting seat, one side of the lifting seat is fixedly installed with a fixed seat for supporting the lifting clamp assembly, the surface of the fixed seat is fixedly installed with a driving motor, the lifting clamp assembly includes a driving box, a main gear disc and a plurality of dynamic ear plates inside the driving box, a linkage rod, the inside of the driving box is fixedly installed with a positioning ring, and the driving box and the positioning ring are connected by a plurality of rotating pins, one end of the dynamic ear plate is rotatably sleeved on the surface of the rotating pin, the clamp rod assembly is arranged on the surface of each dynamic ear plate, the main gear disc is rotatably installed on the inside of the driving box, and the two ends of the linkage rod are respectively movably connected with the surface of the driving box and the dynamic ear plate, the output end of the driving motor is provided with a worm, and the surface of the driving box is provided with a reduction gear set for transmission connection between the worm and the surface of the main gear disc.

[0009] The device drives the lifting clamp assembly to rotate by the driving motor, and realizes the clamping control of the clamp rod assembly through the cooperative movement of the main gear disc and the dynamic ear plate, ensuring that the device can stably clamp the crucible during lifting.

[0010] In one possible implementation, the clamp rod assembly includes a rod sleeve, a dynamic finger rod and an eccentric chuck fixed to the bottom end of the dynamic finger rod. The rod sleeve is fixed to the surface of the dynamic ear plate and has a lead screw motor at the top end. The top end of the dynamic finger rod is slidably sleeved on the inside of the rod sleeve. The output end of the lead screw motor is fixedly connected with a lead screw that is threadedly sleeved on the inside of the dynamic finger rod. The inside of the rod sleeve is provided with a sliding strip for guiding the linear sliding of the dynamic finger rod.

[0011] Through the cooperation of the lead screw motor and the lead screw, precise extension and contraction control of the dynamic finger rod is realized, ensuring that the eccentric chuck is well fitted with the surface of the crucible, further enhancing the clamping effect of the crucible.

[0012] In a possible implementation, the lifting seat is slidingly sleeved on the surface of the main stand, one side of the main stand is provided with a vertically arranged rack, and the surface of the lifting seat is provided with a motor and a crawling tooth engaged with the surface of the rack.

[0013] The design ensures that the lifting device can be flexibly adjusted at different heights through motor control of the lifting seat along the main stand, so as to meet the needs of various operation scenes.

[0014] In a possible implementation, the movable ear plate is a triangular plate, a plurality of movable ear plates are uniformly distributed in the circumferential direction between the driving box and the positioning ring, and the connection points of the movable ear plate surface with the linkage rod, the positioning ring and the clamping rod assembly are respectively located at the three vertices of the triangle.

[0015] Through the triangular support structure design, the plurality of movable ear plates are uniformly stressed during clamping of the crucible, and the clamping stability is improved.

[0016] In a possible implementation, the surface of the driving box is provided with a plurality of uniformly distributed guide pins, the surface of the main tooth disc is provided with a limiting guide groove, the limiting guide groove is sleeved on the surface of the guide pin, and the centers of the main tooth disc, the limiting guide groove and the positioning ring are located on the same vertical axis.

[0017] Through the sleeving design of the limiting guide groove and the guide pin, the limiting control of the main tooth disc in the radial direction is realized, the clamping position in the lifting process is ensured to be accurate, and deviation in the clamping process is prevented.

[0018] In a possible implementation, the linkage rod is an arc-shaped linkage structure, the main tooth disc is in a ring structure and has the same thickness as the movable ear plate, and the main tooth disc, the movable ear plate and the linkage rod are located in the same plane.

[0019] Through reasonable arrangement between the main tooth disc and the movable ear plate and the linkage rod, uniform distribution of clamping force is realized, and stress balance during lifting of the crucible is ensured.

[0020] In a possible implementation, the cross section of the eccentric chuck is in a drop shape, the eccentric chuck is a high-temperature-resistant metal material member, and the outer peripheral surface of the eccentric chuck is in a frosted surface shape.

[0021] The drop-shaped eccentric chuck design increases the contact area with the crucible, and the high-temperature-resistant material improves the durability and anti-skid performance, further improving the clamping stability.

[0022] In a possible implementation, the surface of the rod sleeve is provided with a lead screw motor and a lead screw for driving the telescopic movement of the movable finger rod.

[0023] Through the structural design of the rod sleeve kit, the lead screw motor and the lead screw can efficiently drive the movable finger rod to perform telescopic movement, ensuring that precise clamping and releasing of the crucible are realized during lifting.

[0024] In a possible implementation, the output end of the lead screw motor and the top end of the lead screw are connected through a flexible coupling, and a feedback detection assembly is arranged inside the flexible coupling, the feedback detection assembly comprising a strain gauge for detecting force deformation of the flexible coupling and a control module, the strain gauge being used to detect the force state of the movable finger rod in real time, when the movable finger rod is subjected to force fluctuation, i.e., the contact surface of the eccentric clamp head and the crucible slips, the control module is electrically connected with the driving motor, the driving motor is controlled to work to increase the movement distance of the clamping rod assembly, and the contact effect with the crucible is enhanced, so as to realize precise control and automatic adjustment of the clamping position of the crucible.

[0025] Through the design of the flexible coupling and the feedback detection system, real-time monitoring and adjustment of the clamping state of the crucible are realized, and the stability of the crucible during lifting is ensured, avoiding the occurrence of insufficient clamping force or slippage.

[0026] The present application has the following beneficial effects:

[0027] 1. In the present application, the surface main tooth disc of the lifting clamp assembly and the linkage rod control multiple clamping rod assemblies to perform radial movement, one of the outer expansion type inner support positioning or the outer clamping positioning can be selected according to different specifications of the crucible, so as to non-destructively tool the crucible, prevent falling, and improve the stability during lifting.

[0028] 2. In the present application, the multiple clamping rod assembly structure is adopted, the movable finger rod and the eccentric clamp head perform relative moving away and moving close in the deflection movement of the movable ear plate, the movable finger rod and the eccentric clamp head synchronously perform deflection movement, the eccentric clamp head is more fully attached to the surface of the crucible, and the worm transmission mode that can only transmit in one direction is adopted between the driving motor and the main tooth disc, the locking of the crucible clamping is realized, and the clamping stability is further improved.

[0029] 3. In the present application, the flexible coupling and the feedback detection assembly are introduced, real-time monitoring and automatic adjustment of the contact state of the clamping rod assembly and the crucible are realized. When the clamping force is insufficient or the surface of the crucible slips, the system can automatically adjust the operation state of the driving motor to increase the clamping force and adjust the clamping position, so as to ensure the stability and safety of the crucible during clamping. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0031] Figure 2Fig. 1 is a schematic view of a surface structure of a lifting clamp assembly according to an embodiment of the present application;

[0032] Figure 3 Fig. 2 is a schematic view of an internal structure of a driving box according to an embodiment of the present application;

[0033] Figure 4 Fig. 3 is a schematic view of an exploded structure of a lifting clamp assembly according to an embodiment of the present application;

[0034] Figure 5 Fig. 4 is a schematic view of an installation structure of a clamp rod assembly according to an embodiment of the present application;

[0035] Figure 6 Fig. 5 is a schematic view of an internal structure of a clamp rod assembly according to an embodiment of the present application;

[0036] Figure 7 Fig. 6 is a schematic view of a main tooth disc structure according to an embodiment of the present application.

[0037] Reference signs:

[0038] 100, main stand; 110, lifting machine base; 120, fixed base; 130, driving motor;

[0039] 200, lifting clamp assembly; 210, driving box; 220, main tooth disc; 230, movable lug plate; 240, linkage rod; 211, positioning ring; 212, guide pin; 221, limiting guide groove;

[0040] 300, clamp rod assembly; 310, rod sleeve; 320, movable finger rod; 330, eccentric clamp head; 311, sliding bar; 312, screw rod motor; 313, screw rod. DETAILED DESCRIPTION

[0041] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application with reference to the specific embodiments and the accompanying drawings. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0042] It is to be understood that the above description is only exemplary and is not intended to limit the scope of the present application.

[0043] The accompanying drawings are referred to in the following description of the present application. Figures 1-7 Some embodiments of the present application provide a straight-line type crucible lifting device.

[0044] Embodiment 1:

[0045] In one embodiment of the present application, a linear crucible lifting device is provided. The device comprises a main stand 100, a lifting clamp assembly 200 and a clamp rod assembly 300. The surface of the main stand 100 is provided with a lifting seat 110. One side of the lifting seat 110 is fixedly provided with a fixing seat 120 for supporting the lifting clamp assembly 200. The surface of the fixing seat 120 is fixedly provided with a driving motor 130. The lifting clamp assembly 200 comprises a driving box 210, a main toothed disc 220 and a plurality of movable lug plates 230 and linkage rods 240 inside the driving box 210. The inside of the driving box 210 is fixedly provided with a positioning ring 211, and the driving box 210 and the positioning ring 211 are connected through a plurality of rotating pins. One end of the movable lug plate 230 is rotatably sleeved on the surface of the rotating pin. The clamp rod assembly 300 is arranged on the surface of each movable lug plate 230 one by one. The main toothed disc 220 is rotatably installed on the inside of the driving box 210. The two ends of the linkage rod 240 are movably connected with the surface of the driving box 210 and the movable lug plate 230 respectively. The output end of the driving motor 130 is provided with a worm, and the surface of the driving box 210 is provided with a reduction gear set for transmission connection between the worm and the surface of the main toothed disc 220.

[0046] In this embodiment, the driving motor 130 drives the worm to connect with the main toothed disc 220, thereby driving the lifting clamp assembly 200 to rotate. At the same time, the linkage rod 240 and the movable lug plate 230 move synchronously during rotation, thereby driving the clamp rod assembly 300 to move along the radial direction, so as to clamp and release the crucible.

[0047] Further, the clamp rod assembly 300 comprises a rod sleeve 310, a movable finger rod 320 and an eccentric chuck 330 fixed to the bottom end of the movable finger rod 320. The rod sleeve 310 is fixed to the surface of the movable lug plate 230 and is provided at the top end with a screw rod motor 312. The top end of the movable finger rod 320 is slidably sleeved on the inside of the rod sleeve 310. The output end of the screw rod motor 312 is fixedly connected with a screw rod 313 which is screwedly sleeved on the inside of the movable finger rod 320. The inside of the rod sleeve 310 is provided with a sliding strip 311 for guiding the linear sliding of the movable finger rod 320.

[0048] The screw rod motor 312 in this embodiment drives the telescopic movement of the movable finger rod 320 through linkage with the screw rod 313, so as to finely adjust the height of the eccentric chuck 330, so that the eccentric chuck 330 can tightly contact the surface of the crucible during clamping, thereby achieving stable clamping effect. When the size of the crucible is large, the built-in eccentric chuck 330 can be used to make the eccentric chuck 330 contact the inner wall of the crucible through radial outward expansion movement, thereby achieving internal expansion clamping. When the conditions are appropriate, the eccentric chuck 330 can also clamp the outer wall of the crucible through the mode of reducing the spacing movement.

[0049] The lifting seat 110 is slidingly sleeved on the surface of the main stand 100, one side of the main stand 100 is provided with a vertical rack, and the surface of the lifting seat 110 is provided with a motor and a crawling tooth meshing with the surface of the rack. Through the driving of the motor, the vertical movement of the lifting seat 110 along the main stand 100 is realized, so that the device can adapt to the operation requirements of the crucible of different heights.

[0050] Further, the dynamic ear plate 230 is a triangular plate structure, a plurality of dynamic ear plates 230 are uniformly distributed between the driving box 210 and the positioning ring 211, and the connection points of the dynamic ear plate 230 surface, the linkage rod 240, the positioning ring 211 and the clamping rod assembly 300 are located at the three vertices of the triangle. Such a triangular structure improves the movement spacing control effect of the clamping rod assembly 300 during radial movement, so that the stress during clamping is uniform, and the vibration and deviation during clamping are reduced.

[0051] The surface of the driving box 210 is provided with a plurality of uniformly distributed guide pins 212, the surface of the main tooth disc 220 is provided with a limiting guide groove 221, the limiting guide groove 221 is correspondingly sleeved with the guide pin 212, and the main tooth disc 220 can be accurately positioned and limited from excessive movement during operation.

[0052] During clamping, the linkage rod 240 is an arc-shaped connecting rod structure, the main tooth disc 220 is an annular structure, and the thickness is the same as that of the dynamic ear plate 230, all these components are located in the same plane, which ensures the stability and balanced stress during clamping.

[0053] The eccentric chuck 330 is in the shape of a water droplet in cross section and is made of a high-temperature-resistant metal material, and the outer peripheral surface thereof is designed as a frosted surface, which can increase the contact area with the crucible and further improve the stability and anti-skid performance of clamping.

[0054] In the embodiment, the surface of the rod sleeve 310 is provided with a lead screw motor 312 and a lead screw 313 for driving the movable finger rod 320 to perform telescopic movement. Through this design, the movement of the movable finger rod 320 can be effectively controlled to adapt to the clamping requirements of crucibles of different specifications.

[0055] The output end of the lead screw motor 312 and the lead screw 313 are connected through a flexible coupling, and the flexible coupling is internally provided with a feedback detection assembly. The assembly detects the stress state of the eccentric chuck 330 and the surface of the crucible during clamping through a strain gauge, so as to prevent insufficient clamping force or sliding of the crucible. The system automatically adjusts the operation of the driving motor 130 through the feedback signal to increase the clamping force, so as to ensure the stable lifting of the crucible.

[0056] Embodiment 2:

[0057] In another embodiment of the present application, the straight crucible lifting device is similar to embodiment 1, but further enhances the intelligent control of the lifting process during clamping.

[0058] A higher precision strain gauge is arranged in the flexible coupling of the lead screw motor 312 to monitor the force change of the clamping rod assembly 300 with the surface of the crucible in real time during clamping. When the surface of the crucible slips or is insufficiently stressed due to changes in the operating environment, the system controls the operation of the driving motor 130 through feedback signals and connects the shutdown program control device to stop and connect the alarm prompt program.

[0059] In this embodiment, the driving motor 130 is connected to the crawling gear motor through the control module, and the height of the main stand 100 is automatically adjusted along the vertical rack through the electric system control. This height adjustment can be adjusted synchronously during the system lifting process, so that the crucible can be smoothly lifted to the specified height.

[0060] Through this height automatic adjustment function, the operator only needs to input the specifications and target height of the crucible, and the system can complete the automatic clamping and lifting operation, greatly improving the production efficiency and reducing the risk of human intervention errors.

[0061] In embodiment 2, the high-temperature-resistant design of the eccentric clamp 330 performs more outstandingly in more extreme high-temperature environments. Through the efficient contact of the frosted surface with the crucible, the stability of the surface of the crucible is ensured, and even if the temperature of the crucible is too high during operation, the clamping effect will not be affected. At the same time, the system can automatically adjust the clamping force according to the temperature feedback signal of the crucible, further improving the safety and reliability of the operation.

[0062] In summary, the present application greatly improves the efficiency and safety of the crucible lifting process through the optimization of the structure of the clamping device and the application of the intelligent control system, and is suitable for various specifications of crucible operation scenes.

[0063] The working principle and use process of the present application are as follows:

[0064] 1. Working principle:

[0065] The present application realizes the automatic clamping and lifting of the crucible by adopting multiple electric control systems, worm gear mechanisms and feedback detection systems, and ensures the safety and stability during the lifting process. The main working principle includes the following aspects:

[0066] Dynamic control and worm drive: The driving motor 130 provided in the device is connected with the worm drive structure, used to control the rotation and lifting operation of the lifting clamp assembly 200. The driving motor 130 is engaged with the driving box 210 through the worm, driving the main tooth disc 220 to rotate, so that the linkage rod 240 and the dynamic ear plate 230 perform synchronous radial movement, thereby controlling the clamping and release of the crucible by the clamp rod assembly 300. The worm drive mechanism has a one-way locking function, which can prevent the crucible from accidentally falling off during clamping, improving the clamping stability.

[0067] Flexible coupling and feedback detection: The device introduces a lead screw motor 312 and a feedback detection assembly. The system monitors the contact force between the clamp rod assembly 300 and the surface of the crucible in real time through a strain gauge. When insufficient clamping force or slippage occurs on the surface of the crucible is detected, the feedback system automatically adjusts the operating state of the driving motor 130, increasing the clamping force or adjusting the clamping position to ensure the stability and safety of the crucible during lifting.

[0068] Multi-specification crucible adaptation: In the present application, through the radial adjustable design of the multiple dynamic ear plates 230 and the clamp rod assembly 300, the clamping range can be automatically adjusted according to different sizes of crucibles, adapting to different specifications of crucibles. Through precise control of the clamping position and clamping force, damage to the surface of the crucible is avoided, achieving non-destructive clamping of the crucible.

[0069] 2. Usage process:

[0070] Step 1: Start the equipment

[0071] First, the operator starts the control system of the lifting device, starts the electric control module, and ensures that the power supply and motor are operating normally.

[0072] Step 2: Positioning and clamping of the crucible

[0073] According to the position of the crucible, adjust the height of the lifting clamp assembly 200, and control the extension and retraction of the dynamic finger lever 320 through the lead screw motor 312, so that the dynamic finger lever 320 is in line with the height of the crucible. Through the electric control system, the driving motor 130 is started, driving the worm and the main tooth disc 220 linkage, so that the lifting clamp assembly 200 starts to act. The dynamic ear plate 230 and the clamp rod assembly 300 move radially and gradually approach the surface of the crucible.

[0074] Step 3: Lifting of the crucible

[0075] After the crucible is firmly clamped, the system starts to lift the crucible through the driving motor 130 driving the worm mechanism. The crawling gear motor in the device cooperates with the rack on the main stand 100 to realize the vertical movement of the crucible. Through the electric control module, the operator can accurately control the lifting height and adjust the lifting speed of the crucible according to the work requirements.

[0076] In the lifting process, the lead screw motor 312 and the feedback detection assembly will monitor the force state of the clamping rod assembly 300 in contact with the crucible in real time. Once the crucible slips off, the feedback detection assembly will monitor the abnormal fluctuation of the data, indicating that the clamping force is insufficient. The system will automatically increase the clamping force and adjust the movement of the clamping rod assembly 300 to prevent slipping and loosening, automatically adjust the clamping force, and ensure the safety and stability of the crucible during the entire lifting process.

[0077] 3. Intelligent control function:

[0078] The present application can also be combined with an automatic control system to automatically control the lifting process through a preset operation program, reducing the risk of human operation errors. The device can automatically select the appropriate clamping force and lifting speed according to the size, weight and other parameters of the crucible, further improving the working efficiency and applicability of the device.

[0079] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means 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 application. In the present specification, the illustrative description of the above terms does 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.

[0080] Although embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A linear crucible lifting device, characterized by, Include: Main stand (100), lifting clip assembly (200) and clamp rod assembly (300), the surface of the main stand (100) is provided with lifting seat (110), one side of the lifting seat (110) is fixedly installed with fixing seat (120) for supporting lifting clip assembly (200), the surface of the fixing seat (120) is fixedly installed with driving motor (130), the lifting clip assembly (200) includes driving box (210) and main tooth disc (220) and a plurality of dynamic ear plate (230) and linkage rod (240) located in the inside of driving box (210), the inside of the driving box (210) is fixedly installed with positioning ring (211), and the driving box (210) and the positioning ring (211) are connected through a plurality of rotating pins, one end of the dynamic ear plate (230) is rotatably sleeved on the surface of the rotating pin, the clamp rod assembly (300) is arranged on the surface of each dynamic ear plate (230) one by one, the main tooth disc (220) is rotatably installed on the inside of the driving box (210), the two ends of the linkage rod (240) are movably connected with the surface of the driving box (210) and the dynamic ear plate (230) respectively, the output end of the driving motor (130) is provided with a worm, and the surface of the driving box (210) is provided with a reduction gear set for transmission connection between the worm and the surface of the main tooth disc (220); The dynamic ear plate (230) is in the form of a triangular plate, a plurality of dynamic ear plates (230) are evenly distributed in the circumferential direction between the driving box (210) and the positioning ring (211), and the connection points of the dynamic ear plate (230) surface, the linkage rod (240), the positioning ring (211) and the clamp rod assembly (300) are located in the triangle of the dynamic ear plate (230) respectively; The clamp rod assembly (300) includes a rod sleeve (310), a dynamic finger rod (320) and an eccentric clamp head (330) fixed to the bottom end of the dynamic finger rod (320), the rod sleeve (310) is fixed to the surface of the dynamic ear plate (230) and the top end is provided with a screw rod motor (312), the top end of the dynamic finger rod (320) is slidably sleeved on the inside of the rod sleeve (310), the output end of the screw rod motor (312) is fixedly connected with a screw rod (313) which is sleeved on the inside of the dynamic finger rod (320), the inside of the rod sleeve (310) is provided with a sliding strip (311) for guiding the linear sliding of the dynamic finger rod (320).

2. A linear crucible lifting device according to claim 1, characterized in that The lifting seat (110) is slidably sleeved on the surface of the main stand (100), one side of the main stand (100) is provided with a vertical arranged rack, the surface of the lifting seat (110) is provided with a motor and a crawling tooth meshing with the surface of the rack.

3. A linear crucible lifting device according to claim 1, wherein The surface of the driving box (210) is provided with a plurality of evenly distributed guide pins (212), the surface of the main tooth disc (220) is provided with a limiting guide groove (221), and the limiting guide groove (221) is correspondingly sleeved on the surface of the guide pin (212), the centers of the main tooth disc (220), the limiting guide groove (221) and the positioning ring (211) are located on the same vertical axis.

4. A linear crucible lifting device according to claim 1, wherein The linkage rod (240) is an arc-shaped connecting rod structure, the main tooth disc (220) is in a ring structure and has the same thickness as the dynamic lug plate (230), and the main tooth disc (220), the dynamic lug plate (230) and the linkage rod (240) are located in the same plane.

5. A linear crucible lifting device according to claim 1, wherein The eccentric chuck (330) is in a water-drop-shaped cross section, is made of a high-temperature-resistant metal material, and has a frosted surface.

6. A linear crucible lifting device according to claim 1, wherein The surface of the rod set (310) is provided with a lead screw motor (312) and a lead screw (313) for driving the dynamic finger rod (320) to perform telescopic movement.

7. A linear crucible lifting device according to claim 1, wherein The output end of the lead screw motor (312) is connected to the top end of the lead screw (313) through a flexible coupling, and the flexible coupling is further provided with a feedback detection assembly inside. The feedback detection assembly comprises a strain gauge for detecting the stress deformation of the flexible coupling and a control module. The strain gauge is used to detect the stress state of the dynamic finger rod (320) in real time. When the dynamic finger rod (320) is subjected to fluctuating stress, i.e. the contact surface between the eccentric chuck (330) and the crucible slips, the control module is electrically connected to the driving motor (130) to control the driving motor (130) to work to increase the movement distance of the clamping rod assembly (300) and enhance the contact effect with the crucible, so as to realize precise control and automatic adjustment of the clamping position of the crucible.

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