Hydraulic forging machine magnetic levitation moving worktable
By setting a repulsive magnetic field between the moving platform and the fixed base of the hydraulic forging machine, the friction and wear problems during the movement of the hydraulic forging machine are reduced by utilizing the repulsive force between the magnets, thus achieving more efficient and reliable movement performance.
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGKEJUXIN CLEAN ENERGY &HOT FORGING EQUIP RES & DEV CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-31
AI Technical Summary
The moving worktable of a hydraulic forging machine experiences significant friction and wear during movement, leading to issues such as bending of the moving rods, which are difficult to effectively resolve with existing technologies.
A repulsive magnetic field is set between the moving platform and the fixed base of the hydraulic forging machine. The repulsive force between the magnets reduces the pressure of the moving platform on the fixed base. A combination of electromagnets and permanent magnets is used, and the magnetic field strength is adjusted by pressure sensors and PLC to optimize the friction.
This reduces friction and wear between the moving platform and the fixed base, lowers the strength requirements of the traction device, extends the service life, and improves the system's reliability and energy efficiency.
Smart Images
Figure CN224574611U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a moving worktable under a forging machine, specifically a structure that uses magnetic levitation to reduce the pressure of the moving worktable on the supporting worktable, belonging to the field of mechanical design and manufacturing technology. Background Technology
[0002] The moving worktable of a hydraulic forging machine requires high load-bearing capacity and strength, necessitating its extremely large size and weight. For example, the moving worktable of a free forging machine exceeding 10,000 tons is over 20 meters long, nearly 10 meters wide, and over 1 meter thick, weighing close to 1,000 tons. Its movement exerts immense pressure and significant wear on the load-bearing structure, necessitating a powerful moving mechanism. Due to the high resistance to movement, bending of the moving rods frequently occurs. Research has shown that to reduce friction, the normal force between the two sliding objects must be reduced. For many years, designers have implemented various measures with unsatisfactory results, highlighting the urgent need for an advanced method to completely solve these challenges. Summary of the Invention
[0003] In response to the problems raised in the background art, this utility model provides a magnetic levitation moving worktable for a hydraulic forging machine, in which a repulsive magnetic field is set between the moving table body and the fixed base to reduce the moving force and reduce wear.
[0004] To achieve the above objectives, this utility model proposes a magnetically levitated moving worktable for a hydraulic forging machine, comprising: a moving platform and a fixed base, wherein a moving device pulls the moving platform to slide on the fixed base, characterized in that:
[0005] The lower part of the movable platform and the upper part of the fixed platform are provided with repulsive magnets, and the magnets generate a repulsive magnetic field between them. The magnetic repulsive force reduces the pressure of the movable platform on the fixed platform.
[0006] The magnet is an electromagnet or a permanent magnet;
[0007] The magnetic repulsive force is set to 70-95% of the weight of the mobile platform.
[0008] Preferably, a permanent magnet is provided on the movable platform and an electromagnet is provided on the fixed platform, and the permanent magnet and the electromagnet have the same magnetic pole name when they are close to each other.
[0009] Preferably, an electromagnet is provided on the movable platform and a permanent magnet is provided on the fixed base, and the magnetic poles of the electromagnet and the permanent magnet that are close to each other have the same name.
[0010] Preferably, permanent magnets are provided on both the movable platform and the fixed base, and the magnetic poles of the permanent magnets that are close to each other have the same name.
[0011] Preferably, both the movable platform and the fixed base are equipped with electromagnets, and the magnetic poles of the electromagnets that are close to each other have the same name.
[0012] Furthermore, a pressure sensor is installed between the electromagnet on the fixed platform and the fixed platform, and the magnetic force range between the magnet on the movable platform and the electromagnet on the fixed platform is set. An electronic control device and a PLC are installed on the circuit of the electromagnet. The PLC instructs its electronic control device to adjust the magnetic field strength of the electromagnet according to the pressure measured by the pressure sensor and the set magnetic force range.
[0013] Furthermore, a pressure sensor is installed between the electromagnet on the movable platform and the movable platform, and the magnetic force range between the electromagnet on the movable platform and the magnet on the fixed base is set; an electronic control device and a PLC are installed on the circuit of the electromagnet, and the PLC instructs its electronic control device to adjust the magnetic field strength of the electromagnet according to the pressure measured by the pressure sensor and the set magnetic force range.
[0014] This design involves placing magnets between the moving platform and the fixed base of the moving worktable of a hydraulic forging machine. The repulsive force generated between like magnetic poles reduces the pressure of the moving platform on the fixed base, thereby reducing the friction between the moving platform and the fixed base, and also reducing the moving force. This lowers the strength requirements of the traction device and extends its service life.
[0015] This invention has the advantages of reducing friction and wear, energy efficiency, and high reliability. Attached Figure Description
[0016] Appendix Figure 1 This is a schematic diagram of the main sectional structure of this utility model.
[0017] Appendix Figure 2 For the appendix Figure 1 A schematic diagram of the cross-sectional structure of the AA composite section.
[0018] In the attached diagram, 1 is a fixed platform, 2 is an electromagnet assembly, 3 is a movable platform, 4 is a permanent magnet assembly, and P is a pressure sensor. Detailed Implementation
[0019] Appendix Figure 1 The image shows a movable platform 3 positioned above a fixed base 1, and the movable platform 3 can slide left and right on the fixed base 1. Figure 1 and 2The illustration shows an embodiment where the permanent magnet assembly 4 is placed in the movable platform 3 and the electromagnet assembly 2 is placed in the fixed base 1. The two magnetic poles of the permanent magnet assembly 4 and the electromagnet assembly 2 that are close to each other are set as identical magnetic poles (both S poles or both N poles). A strong repulsive force is generated between the permanent magnet assembly 4 and the electromagnet assembly 2, thereby reducing the pressure of the movable platform 3 on the fixed base 1. When the movable platform 3 slides on the fixed base 1, the frictional force decreases, and the traction force also decreases.
[0020] Appendix Figure 1 and 2 In the device shown, a magnetic yoke (not shown in the figure) is also set in the permanent magnet group 4 to control the on / off of the magnetic lines of force of the permanent magnet group 4; an electronic control device and a PLC (not shown in the figure) are set on the circuit with the electromagnet group 2. The electronic control device can adjust parameters such as current or voltage in the coil of the electromagnet group 2 to adjust the magnetic field strength of the electromagnet group 2 and achieve the purpose of adjusting the magnetic field force.
[0021] The pressure sensor P measures the real-time pressure between the electromagnet assembly 2 and the fixed base 1. Based on the set magnetic field force value and the pressure information measured by the pressure sensor P, the PLC instructs the electrical control device to change the relevant electrical parameters and adjust the magnetic field strength of the electromagnet assembly 2 to meet the design requirements.
Claims
1. A magnetically levitated moving table for a hydraulic forging press, comprising: A movable platform and a fixed base, wherein a moving device pulls the movable platform to slide on the fixed base, characterized in that: The lower part of the movable platform and the upper part of the fixed platform are provided with repulsive magnets, and the magnets generate a repulsive magnetic field between them. The magnetic repulsive force reduces the pressure of the movable platform on the fixed platform. The magnet is an electromagnet or a permanent magnet; The magnetic repulsive force is set to 70-95% of the weight of the mobile platform.
2. A magnetically levitated moving table for a hydraulic forging press according to claim 1, characterized in that: The mobile platform is equipped with a permanent magnet, and the fixed platform is equipped with an electromagnet, wherein the permanent magnet and the electromagnet have the same magnetic pole name when they are close to each other.
3. A magnetically suspended moving table for a hydraulic forging press according to claim 1, characterized in that: An electromagnet is provided on the mobile platform, and a permanent magnet is provided on the fixed base, with the magnetic poles of the electromagnet and the permanent magnet having the same name when they are close to each other.
4. A magnetically suspended moving table for a hydraulic forging press according to claim 1, characterized in that: Both the mobile platform and the fixed base are equipped with permanent magnets, and the magnetic poles of the permanent magnets that are close to each other have the same name.
5. A magnetically suspended moving table for a hydraulic forging press according to claim 1, characterized in that: Both the mobile platform and the fixed base are equipped with electromagnets, and the magnetic poles of the electromagnets that are close to each other have the same name.
6. A magnetically suspended moving table for a hydraulic forging press according to claim 1, characterized in that: A pressure sensor is installed between the electromagnet on the fixed platform and the fixed platform, and the magnetic force range between the magnet on the moving platform and the electromagnet on the fixed platform is set. An electronic control device and a PLC are installed on the circuit of the electromagnet. The PLC instructs its electronic control device to adjust the magnetic field strength of the electromagnet according to the pressure measured by the pressure sensor and the set magnetic force range.
7. A magnetically suspended moving table for a hydraulic forging press according to claim 1, characterized in that: A pressure sensor is installed between the electromagnet on the mobile platform and the mobile platform itself, and the magnetic force range between the electromagnet on the mobile platform and the magnet on the fixed base is set. An electronic control device and a PLC are installed on the circuit of the electromagnet. The PLC instructs its electronic control device to adjust the magnetic field strength of the electromagnet according to the pressure measured by the pressure sensor and the set magnetic force range.