Intelligent aluminum alloy casting mold rapid cooling device

Abstract

The utility model relates to the technical field of casting mold cooling devices, and discloses an intelligent aluminum alloy casting mold rapid cooling device which comprises a work supporting bottom plate, the top face of the work supporting bottom plate is fixedly connected with a cooling water tank, and cooling liquid conveying assemblies which are symmetrically distributed are arranged on the side face of the cooling water tank. A cooling liquid conveying assembly is fixedly connected to the top face of the work supporting bottom plate, a rapid heat dissipation assembly is arranged in the cooling liquid conveying assembly, lifting supporting rods distributed at equal intervals are fixedly connected to the top face of the work supporting bottom plate, lifting cooling assemblies are arranged on the inner sides of the lifting supporting rods, and a bottom casting mold is fixedly connected to the inner sides of the lifting cooling assemblies. According to the cooling device, the cooling speed can be remarkably increased, the cooling uniformity is ensured, the mold deformation and cracks are avoided, the service life of the mold is prolonged, the product quality is improved, and the cooling device is reasonable in structure and convenient and fast to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to casting mould cooling device technical field, concretely is a kind of intelligent aluminum alloy casting mould rapid cooling device. BACKGROUND

[0002] Aluminum alloy casting occupies important position in modern industry, is widely used in automobile, aerospace, electronics and many other fields, with the continuous improvement of the quality and production efficiency requirement of aluminum alloy products in various industries, the cooling link of casting mould becomes the key factor influencing production.

[0003] Traditional aluminum alloy casting mould cooling mode is relatively simple, usually natural cooling or ordinary water cooling is used, natural cooling speed is slow, greatly prolongs production cycle, in the pursuit of efficient production, already unable to meet market demand, ordinary water cooling although cooling speed has been promoted, but cooling uniformity is difficult to guarantee, it is easy to cause mould local temperature change too much, produces thermal stress, makes mould appear deformation, crack and other defects, further influence mould service life and the quality of aluminum alloy products, for this reason, we propose a kind of intelligent aluminum alloy casting mould rapid cooling device. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of prior art, the utility model provides an intelligent aluminum alloy casting mould rapid cooling device, solves the above problems.

[0005] To realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] An intelligent aluminum alloy casting mould rapid cooling device, including work support bottom plate, the top surface of work support bottom plate is fixedly connected with cooling water tank, the side surface of cooling water tank is provided with symmetrical distribution cooling liquid delivery assembly, the inside of cooling liquid delivery assembly is provided with quick heat dissipation assembly, the top surface of work support bottom plate is fixedly connected with equidistant distribution lifting support rod, the inside of lifting support rod is provided with lifting cooling assembly, the inside of lifting cooling assembly is fixedly connected with bottom casting mould, the top surface of bottom casting mould is fixedly connected with casting mould cover plate.

[0007] Preferably, the top surface of the work support bottom plate is fixedly connected with equidistant distribution lifting support rod, the inner side of the lifting support rod is fixedly connected with equidistant distribution rotating support table, the inner side of the rotating support table is provided with support hole, the top surface of the work support bottom plate is fixedly connected with air cooling support frame on the front and back sides, and the inner side of the air cooling support frame is fixedly connected with pump support table.

[0008] Preferably, the side surface of the cooling water tank is provided with equidistant distribution delivery pipe mounting hole, and the inner side of the delivery pipe mounting hole is fixedly connected with cooling liquid delivery pipe.

[0009] Preferably, the coolant delivery assembly includes a top coolant reservoir, a coolant delivery pump, a bottom cooling interface pipe, a side cooling interface pipe, and a bottom coolant reservoir. A rotating support platform is fixedly connected to the inner side of the air-cooled support frame. A top coolant reservoir is fixedly connected to the top surface of the air-cooled support frame. A coolant delivery pump is fixedly connected to the inner sides of the top and bottom coolant reservoirs. A bottom coolant delivery pump is fixedly connected to the top surface of the working support base plate. A bottom cooling interface pipe is fixedly connected to the other end of the bottom coolant delivery pump. A top coolant delivery pump is fixedly connected to the top surface of the delivery pump support platform. A side cooling interface pipe is fixedly connected to the other end of the top coolant delivery pump. Coolant delivery pipes distributed at equal intervals are fixedly connected to the other sides of the bottom and side cooling interface pipes.

[0010] Preferably, the rapid heat dissipation component includes a cooling fan and heat-conducting fins. The front side of the air-cooled support frame is fixedly connected with equidistantly distributed cooling fans, the top surface of the bottom coolant reservoir is fixedly connected with equidistantly distributed heat-conducting fins, and the bottom surface of the top coolant reservoir is fixedly connected with equidistantly distributed heat-conducting fins.

[0011] Preferably, the lifting and cooling assembly includes a lifting screw, a lifting connecting frame, a guide slide rod, and a lifting drive motor. The lifting screw is rotatably connected to the inner side of the rotating support platform on one side of the top surface of the working support base plate, and the guide slide rod is fixedly connected to the inner side of the rotating support platform on the other side of the top surface of the working support base plate. The lifting drive motor is fixedly connected to the top surface of the working support base plate, and the lifting screw is fixedly connected to the output shaft of the lifting drive motor. The lifting connecting frame is slidably connected to the inner side of the lifting support rod, and the lifting screw is threadedly connected to one side of the lifting connecting frame. The guide slide rod is slidably connected to one side of the lifting connecting frame.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] An intelligent rapid cooling device for aluminum alloy casting molds is provided, which has the following beneficial effects:

[0014] 1. Significantly Improved Cooling Speed: Through the coordinated operation of the coolant delivery components and the rapid heat dissipation components, rapid circulation and efficient heat dissipation of the coolant are achieved. The cold water in the cooling water tank can cool the casting mold as a whole. The coolant delivery pump circulates the coolant between the top and bottom coolant storage tanks and the cooling water tank. At the same time, the cooling fan, in conjunction with the heat-conducting fins, can quickly reduce the coolant temperature. Compared with natural cooling, the cooling time of the casting mold is greatly shortened, production efficiency is improved, and the needs of modern industrial high-efficiency production are met.

[0015] 2. Ensure uniform cooling: The coolant delivery pipes of this device are evenly distributed on the bottom cooling interface pipe and the side cooling interface pipe, which enables the coolant to act evenly on all parts of the casting mold. The lifting and cooling components drive the casting mold to lift and lower, achieving comprehensive and uniform water cooling. This avoids the problem of poor uniformity in ordinary water cooling, effectively reduces the thermal stress caused by excessive local temperature changes in the mold, reduces the risk of defects such as deformation and cracks in the mold, extends the service life of the mold, and improves the quality of aluminum alloy products.

[0016] 3. Reasonable structural design and convenient operation: The various components of the device are rationally arranged. For example, the air-cooled support frame not only provides support for the cooling fan and coolant delivery components, but also optimizes the airflow for heat dissipation. The rotating support platform provides stable rotational support for components such as the lifting screw. At the same time, the lifting and cooling components drive the lifting screw through the lifting drive motor, and with the guide slide, the operation is simple and can easily control the lifting of the casting mold, which is convenient for cooling and maintenance of the mold. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram showing the overall structure of this utility model disassembled;

[0019] Figure 3 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 4 This is a cross-sectional schematic diagram of a portion of the lifting and cooling components in this utility model.

[0021] In the diagram: 1. Working support base plate; 2. Top coolant storage tank; 3. Cooling fan; 4. Air-cooled support frame; 5. Coolant delivery pump; 6. Bottom cooling interface pipe; 7. Side cooling interface pipe; 8. Cooling water tank; 9. Lifting support rod; 10. Bottom casting mold; 11. Lifting screw; 12. Lifting connecting frame; 13. Casting mold cover plate; 14. Rotating support platform; 15. Guide slide rod; 16. Delivery pump support platform; 17. Heat-conducting fins; 18. Bottom coolant storage tank; 19. Coolant delivery pipe; 20. Delivery pipe mounting hole; 21. Lifting drive motor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 This utility model provides a technical solution:

[0024] An intelligent aluminum alloy casting mold rapid cooling device includes a working support base plate 1, a cooling water tank 8 fixedly connected to the top surface of the working support base plate 1, symmetrically distributed coolant delivery components on the side of the cooling water tank 8, a rapid heat dissipation component inside the coolant delivery components, equidistantly distributed lifting support rods 9 fixedly connected to the top surface of the working support base plate 1, a lifting and cooling component inside the lifting support rods 9, a bottom casting mold 10 fixedly connected to the inside of the lifting and cooling component, and a casting mold cover plate 13 fixedly connected to the top surface of the bottom casting mold 10.

[0025] Furthermore, the top surface of the working support base plate 1 is fixedly connected with equidistantly distributed lifting support rods 9, the inner side of the lifting support rods 9 is fixedly connected with equidistantly distributed rotating support platforms 14, the inner side of the rotating support platform 14 is provided with support holes, the front and rear sides of the top surface of the working support base plate 1 are fixedly connected with air-cooled support frames 4, and the inner side of the air-cooled support frames 4 is fixedly connected with a delivery pump support platform 16.

[0026] Furthermore, the side of the cooling water tank 8 is provided with equally spaced delivery pipe mounting holes 20. A coolant delivery pipe 19 is fixedly connected to the inside of the delivery pipe mounting holes 20. The cold water inside the cooling water tank 8 cools the casting mold as a whole. At the same time, through the action of the coolant delivery pipe 19, the cooling water inside the cooling water tank 8 is kept at a low temperature at all times.

[0027] Furthermore, the coolant delivery assembly includes a top coolant reservoir 2, a coolant delivery pump 5, a bottom cooling interface pipe 6, a side cooling interface pipe 7, and a bottom coolant reservoir 18. A rotating support platform 14 is fixedly connected to the inner side of the air-cooled support frame 4. The top coolant reservoir 2 is fixedly connected to the top surface of the air-cooled support frame 4. The coolant delivery pump 5 is fixedly connected to the inner side of the top coolant reservoir 2 and the bottom coolant reservoir 18. The bottom coolant delivery pump 5 is fixedly connected to the top surface of the working support base plate 1. The bottom cooling interface pipe 6 is fixedly connected to the other end of the bottom coolant delivery pump 5. The top coolant delivery pump 5 is fixedly connected to the top surface of the delivery pump support platform 16. The side cooling interface pipe 7 is fixedly connected to the other end of the top coolant delivery pump 5. The other sides of the bottom cooling interface pipe 6 and the side cooling interface pipe 7 are fixedly connected to equally spaced coolant delivery pipes 19. Through the action of the coolant delivery assembly, the coolant is circulated and transported.

[0028] Furthermore, the rapid heat dissipation component includes a cooling fan 3 and heat-conducting fins 17. The cooling fan 3 is fixedly connected to the front side of the air-cooled support frame 4 at equal intervals. The top surface of the bottom coolant storage tank 18 is fixedly connected to heat-conducting fins 17 at equal intervals. The bottom surface of the top coolant storage tank 2 is fixedly connected to heat-conducting fins 17 at equal intervals. Through the action of the rapid heat dissipation component, the coolant storage tank is rapidly cooled.

[0029] Heat transfer path: When the coolant flows in the storage tank, the heat is transferred to the heat-conducting fins through the tank wall. The fins increase the contact area with the air, and together with the airflow of the cooling fan, they achieve efficient heat dissipation (heat dissipation efficiency is improved by more than 40%).

[0030] Furthermore, the lifting and cooling assembly includes a lifting screw 11, a lifting connecting frame 12, a guide slide rod 15, and a lifting drive motor 21. The lifting screw 11 is rotatably connected to the inner side of the rotating support platform 14 on one side of the top surface of the working support base plate 1, and the guide slide rod 15 is fixedly connected to the inner side of the rotating support platform 14 on the other side of the top surface of the working support base plate 1. The lifting drive motor 21 is fixedly connected to the top surface of the working support base plate 1, and the lifting screw 11 is fixedly connected to the output shaft of the lifting drive motor 21. The lifting connecting frame 12 is slidably connected to the inner side of the lifting support rod 9, and the lifting screw 11 is threadedly connected to one side of the lifting connecting frame 12. The guide slide rod 15 is slidably connected to one side of the lifting connecting frame 12. Through the action of the lifting and cooling assembly, the overall lifting of the casting mold is achieved, thereby achieving comprehensive and uniform water cooling.

[0031] Structural Description:

[0032] Working support base plate 1: As the foundation of the entire device, its top surface is fixedly connected to several key components such as cooling water tank 8 and lifting support rod 9. The front and rear sides of the top surface of the working support base plate 1 are provided with air-cooled support frame 4, and the inner side is fixed with delivery pump support platform 16, providing an installation platform and stable support for other components. At the same time, the rotating support platform 14 on one side of the top surface is rotatably connected to the lifting screw 11, and the rotating support platform 14 on the other side is fixed with guide slide rod 15 to ensure the normal operation of the lifting and cooling components.

[0033] Cooling water tank 8: The side of the cooling water tank 8 has equally spaced delivery pipe installation holes 20, and the inside is connected to the coolant delivery pipe 19. The cold water in the tank can cool the casting mold as a whole, and through the coolant delivery pipe 19 and the coolant delivery component, the cooling water is kept at a low temperature and continuously supplies cold source for the mold cooling.

[0034] Lifting support rod 9: It is evenly distributed on the top surface of the working support base plate 1, and a lifting and cooling component is set on the inner side. The lifting support rod 9 provides a sliding track for the lifting connecting frame 12, so that the lifting connecting frame 12 can slide up and down on its inner side, thereby driving the casting mold to lift.

[0035] Bottom casting mold 10: It is a key forming component for aluminum alloy casting. It is fixed inside the lifting connecting frame 12 of the lifting and cooling assembly. This connection method ensures that the bottom casting mold 10 can move stably up and down with the lifting connecting frame 12 during the cooling process. During the casting process, high-temperature aluminum alloy solution is injected into it. The structural design of the bottom casting mold 10 determines the bottom shape and part of the internal structure of the aluminum alloy product. Its material is usually selected as a high-temperature resistant, high-strength alloy material with good thermal conductivity to withstand the high temperature and pressure during the casting process. At the same time, it is conducive to the rapid cooling of the coolant to ensure that the aluminum alloy solution solidifies and forms quickly, thus ensuring the quality of the product.

[0036] Casting mold cover plate 13: Located on the top surface of the bottom casting mold 10, it fits tightly with the bottom casting mold 10 to form a complete casting mold cavity. The shape and size of the casting mold cover plate 13 match the bottom casting mold 10. Its edge may be provided with a sealing structure, such as a sealing groove or a sealing ring mounting position, to prevent the aluminum alloy liquid from overflowing during casting and to ensure the sealing and stability of the casting process. The casting mold cover plate 13 is also made of a high-temperature resistant and high-strength alloy material similar to the bottom casting mold 10. During the cooling process, the coolant can cool it evenly and cool it synchronously with the bottom casting mold 10 to reduce the thermal stress caused by temperature difference, avoid mold deformation or cracking, and ensure the quality of aluminum alloy products.

[0037] Top coolant storage tank 2: Located on the top surface of the air-cooled support frame 4, it is a container for storing coolant. It has a specific volume and strength, and the material is mostly corrosion-resistant metal or engineering plastic, which can prevent coolant corrosion and ensure storage safety.

[0038] Coolant transfer pump 5: Distributed on the top surface of the top coolant storage tank 2, the bottom coolant storage tank 18, the working support base plate 1, and the transfer pump support platform 16. Most of them are centrifugal pumps or plunger pumps, consisting of a motor, impeller, pump body, etc. The motor drives the impeller to rotate to generate negative pressure to draw in liquid, and then the liquid is thrown out by centrifugal force to realize the coolant transfer. All pumps work together to ensure the circulation of coolant in the system.

[0039] Bottom cooling interface pipe 6 and side cooling interface pipe 7: respectively connected to the bottom and top coolant delivery pumps 5 and connected to the coolant delivery pipe 19. They are made of metal or high-strength plastic pipes, with good corrosion resistance and sealing performance. The pipe diameter and shape are designed to fit the relevant components, ensuring coolant delivery efficiency and stable flow.

[0040] Bottom coolant reservoir 18: Similar in function to top coolant reservoir 2, it is used to store coolant and together they form a coolant circulation storage system;

[0041] Coolant delivery pipe 19: It is equidistantly connected to the bottom cooling interface pipe 6 and the side cooling interface pipe 7. The material is mostly metal pipe or plastic pipe with good thermal conductivity. Its diameter and length are designed according to the cooling requirements, so that the coolant can be evenly delivered to all parts of the cooling water tank 8 and fully contact the casting mold to achieve efficient cooling.

[0042] Cooling fan 3: Equivalently fixed to the front of the air-cooled support frame 4, it consists of a motor, fan blades, and a protective cover. It is an axial flow fan with a motor power of 50-100W and an adjustable speed (800-2000 RPM), accelerating airflow through forced convection. The fan outlet is directly opposite the gaps in the heat-conducting fins 17, forming a directional airflow. The fan blade shape and angle are optimized to enhance heat dissipation, and the protective cover ensures personnel safety.

[0043] Heat-conducting fins 17: Material and structure: Made of aluminum alloy (such as 6063-T5), with a single fin thickness of 1-2mm and a spacing of 5-8mm. They are vertically welded to the bottom surface of the top coolant storage tank 2 and the top surface of the bottom coolant storage tank 18, with a total heat dissipation area ≥2㎡. Their multi-fin structure increases the contact area with air, which is conducive to the transfer of heat from the coolant to the fins, and then the airflow generated by the cooling fan 3 carries it away, achieving rapid cooling of the coolant.

[0044] Lifting screw 11: One end is rotatably connected to the inner side of the rotating support platform 14 on the top side of the working support base plate 1, and the other end is fixed to the output shaft of the lifting drive motor 21. The thread on the surface of the screw is engaged with the threaded hole of the lifting connection frame 12 to convert the rotational motion of the motor into linear motion. It is made of high-strength alloy steel, which has high strength and good wear resistance, ensuring that it will not be deformed or damaged under frequent lifting operations.

[0045] Lifting connecting frame 12: One side is threaded to the lifting screw 11, and the other side is slid-hole connected to the guide slide rod 15. It is a frame structure with sufficient strength and rigidity, which can stably support the weight of the bottom casting mold 10 and the casting mold cover plate 13. The interior is designed with mounting grooves or fixing holes to ensure that the mold is firmly fixed and does not shake or fall off during lifting.

[0046] Guide slide rod 15: Fixed inside the rotating support platform 14 on the other side of the top surface of the working support base plate 1, it guides the lifting connecting frame 12. It is generally a high-precision optical shaft with fine surface processing and low friction coefficient. It works with the lifting screw 11 to ensure the lifting connecting frame 12 is stable and accurate.

[0047] Lifting drive motor 21: Fixed on the top surface of the working support base plate 1, it provides power to the lifting screw 11. Servo motors or stepper motors are often selected. The motor speed and direction can be precisely controlled by the control system, and the lifting height and speed of the casting mold can be precisely adjusted to meet different cooling process requirements.

[0048] Working Principle: When this utility model is needed, after the device is turned on, the coolant delivery pump starts. The coolant delivery pumps 5 located in the top coolant storage tank 2 and the bottom coolant storage tank 18 begin to work. The bottom coolant delivery pump 5 draws coolant from the bottom coolant storage tank 18 and delivers it to the cooling water tank 8 through the bottom cooling interface pipe 6 and the coolant delivery pipe 19 to initially cool the casting mold. At the same time, the top coolant delivery pump 5 draws coolant from the top coolant storage tank 2 and delivers it to the cooling water tank 8 through the side cooling interface pipe 7 and the coolant delivery pipe 19, realizing the circulation of coolant. During this process, the cooling fan 3 on the front side of the air-cooled support frame 4 starts, which, together with the top surface of the bottom coolant storage tank 18 and the top cooling water tank 18, cools the mold. The heat-conducting fins 17 on the bottom surface of the coolant storage tank 2 work together to quickly reduce the temperature of the coolant and ensure the cooling effect. When the casting mold needs to be cooled, the lifting drive motor 21 is started, and its output shaft drives the lifting screw 11 to rotate. Since one side of the lifting connecting frame 12 is threaded to the lifting screw 11 and the other side is slidably connected to the guide slide 15, when the lifting screw 11 rotates, the lifting connecting frame 12 slides up and down along the guide slide 15 inside the lifting support rod 9, thereby driving the bottom casting mold 10 and the casting mold cover plate 13 to rise and fall as a whole. During the lifting process, the coolant evenly contacts all parts of the mold, achieving comprehensive and uniform water cooling, improving cooling uniformity, and reducing the thermal stress caused by excessive local temperature changes in the mold.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent aluminum alloy casting mold rapid cooling device, comprising a working support bottom plate (1), characterized in that: The top surface of the work support base plate (1) is fixedly connected with a cooling water tank (8), the side surface of the cooling water tank (8) is provided with symmetrically distributed cooling liquid conveying assemblies, the inside of the cooling liquid conveying assemblies is provided with a rapid heat dissipation assembly, the top surface of the work support base plate (1) is fixedly connected with equidistantly distributed lifting support rods (9), the inner side of the lifting support rods (9) is provided with a lifting cooling assembly, the inner side of the lifting cooling assembly is fixedly connected with a bottom casting mold (10), and the top surface of the bottom casting mold (10) is fixedly connected with a casting mold cover plate (13).

2. The intelligent aluminum alloy casting mold rapid cooling device according to claim 1, characterized in that: The top surface of the work support base plate (1) is fixedly connected with equidistantly distributed lifting support rods (9), the inner side surface of the lifting support rods (9) is fixedly connected with equidistantly distributed rotating support tables (14), the inner side of the rotating support tables (14) is provided with support holes, and the top surface of the work support base plate (1) is fixedly connected with air-cooled support frames (4) on the front and rear sides.

3. The rapid cooling device for an aluminum alloy casting mold according to claim 1, characterized in that: The side surface of the cooling water tank (8) is provided with equidistantly distributed conveying pipe mounting holes (20), and the inner side of the conveying pipe mounting holes (20) is fixedly connected with cooling liquid conveying pipes (19).

4. The intelligent aluminum alloy casting mold rapid cooling device according to claim 2, characterized in that: The cooling liquid conveying assembly comprises a top cooling liquid storage tank (2), a cooling liquid conveying pump (5), a bottom cooling interface pipe (6), a side cooling interface pipe (7) and a bottom cooling liquid storage tank (18), the inner side of the air-cooled support frame (4) is fixedly connected with a rotating support table (14), the top surface of the air-cooled support frame (4) is fixedly connected with the top cooling liquid storage tank (2), the inner sides of the top cooling liquid storage tank (2) and the bottom cooling liquid storage tank (18) are fixedly connected with the cooling liquid conveying pump (5), the top surface of the work support base plate (1) is fixedly connected with the bottom cooling liquid conveying pump (5), the other end of the bottom cooling liquid conveying pump (5) is fixedly connected with the bottom cooling interface pipe (6), the top surface of the conveying pump support table (16) is fixedly connected with the top cooling liquid conveying pump (5), the other end of the top cooling liquid conveying pump (5) is fixedly connected with the side cooling interface pipe (7), and the other side of the bottom cooling interface pipe (6) and the side cooling interface pipe (7) is fixedly connected with equidistantly distributed cooling liquid conveying pipes (19).

5. The intelligent aluminum alloy casting mold rapid cooling device according to claim 2, characterized in that: Said lifting cooling assembly includes lifting screw rod (11), lifting connecting frame (12), guide slide rod (15), lifting drive motor (21), the inner side of the one side rotating support platform (14) of the top surface of the work support bottom plate (1) is rotatably connected with lifting screw rod (11), the inside of the other side rotating support platform (14) of the top surface of the work support bottom plate (1) is fixedly connected with guide slide rod (15), the top surface of the work support bottom plate (1) is fixedly connected with lifting drive motor (21), the output shaft of lifting drive motor (21) is fixedly connected with lifting screw rod (11), the inner side of lifting support rod (9) is slidably connected with lifting connecting frame (12), one side of lifting connecting frame (12) is threadedly connected with lifting screw rod (11), one side of lifting connecting frame (12) is slidably connected with guide slide rod (15).

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