An electrically controlled air spring vibration isolation platform with automatic leveling and pressure maintaining functions

Abstract

The utility model discloses an electric control air spring vibration isolation platform with automatic leveling and pressure maintaining function, which comprises: a table top, a table body, air springs, a plurality of air springs are supported between the table top and the table body; a gas source system, the gas source system is connected with each air spring through a main gas path; a sensing system, the sensing system comprises a height detection unit arranged at each air spring; a leveling actuating mechanism, the leveling actuating mechanism comprises a control valve group arranged correspondingly on the air path of each air spring, and the control valve group is used for controlling the on-off of the corresponding air path; a control system, the control system comprises a controller, and the height detection unit and the control valve group are electrically connected with the controller. The utility model realizes rapid and high-precision automatic leveling, maintains constant air spring pressure, guarantees optimal and stable vibration isolation performance, greatly simplifies the operation process, and completes start-up leveling and pressure maintaining or shutdown through one key.

Description

Technical Field

[0001] This utility model relates to the field of vibration isolation equipment for precision instruments, and in particular to an electrically controlled air spring vibration isolation table with automatic leveling and pressure holding functions. Background Technology

[0002] Existing air spring vibration isolation tables mostly use manual leveling, which suffers from low leveling accuracy, cumbersome operation, and easy pressure drift, affecting vibration isolation effect and equipment stability. Especially in high-precision experimental or processing environments, traditional vibration isolation tables cannot meet the requirements for rapid, stable, and automated leveling and pressure maintenance. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an electrically controlled air spring vibration isolation table with automatic leveling and pressure holding functions, so as to solve the problems of low leveling accuracy, unstable pressure and complicated operation of traditional vibration isolation tables.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an electrically controlled air spring vibration isolation table with automatic leveling and pressure holding functions, comprising: A tabletop, a platform, and air springs, with several of the air springs supporting the tabletop and the platform; An air supply system, which is connected to each air spring via a main air passage; The sensing system includes a height detection unit disposed at each air spring; A leveling actuator, the leveling actuator including a control valve group correspondingly disposed on each of the air spring air circuits, the control valve group being used to control the opening and closing of the corresponding air circuit; A control system, comprising a controller, wherein the height detection unit and the control valve assembly are electrically connected to the controller, and the controller is configured to control the operation of the control valve assembly based on the signal from the height detection unit.

[0005] As a preferred embodiment, the air spring includes a spring housing, an upper housing, a flange, and a diaphragm. The spring housing is provided with an air inlet and an air outlet. A balancing metal block is provided in the middle of the upper housing. The height detection unit is disposed inside the balancing metal block. The upper housing is disposed on the spring housing through the flange. The diaphragm is connected to the upper housing and the flange to form a sealed air chamber.

[0006] As a preferred embodiment, a soft pad is provided between the upper housing and the spring housing.

[0007] As a preferred embodiment, the air source system includes an air pump, an air tank, and a pressure reducing valve connected in sequence, with the pressure reducing valve connected to the air inlet of each air spring via the main air path.

[0008] As a preferred embodiment, the height detection unit is a height sensor, which is integrated inside the balance metal block of the air spring.

[0009] As a preferred embodiment, the control valve assembly includes an intake solenoid valve and an outlet solenoid valve, wherein the intake solenoid valve is connected to the intake port and the outlet solenoid valve is connected to the outlet port.

[0010] As a preferred embodiment, the side of the platform is provided with an operation panel, which is equipped with a start / stop switch, a pressure holding button and a height setting button, and the operation panel is electrically connected to the controller.

[0011] Compared with the prior art, the advantages of this utility model are: it achieves fast and high-precision automatic leveling; it maintains constant air spring pressure to ensure optimal and stable vibration isolation performance; and it greatly simplifies the operation process, allowing one-button completion of start-up, leveling, pressure holding, or shutdown. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 This is a system block diagram of this utility model; Figure 4 This is a schematic diagram of the air spring structure in this utility model; Figure 5 This is a schematic diagram of the upper shell and the balancing metal block in this utility model; Figure 6 This is an installation diagram of the inlet solenoid valve and the outlet solenoid valve in this utility model. Figure 7 This is a schematic diagram of the operation panel in this utility model; The attached diagram lists the following components: 1. Platform; 2. Platform body; 3. Air spring; 4. Air supply system; 5. Main air path; 6. Sensing system; 7. Altitude detection unit; 8. Leveling actuator; 9. Control valve group; 10. Control system; 11. Controller; 12. Mounting hole; 13. Spring housing; 14. Upper housing; 15. Flange; 16. Diaphragm; 17. Air inlet; 18. Air outlet; 19. Balance metal block; 20. Soft pad; 21. Air pump; 22. Air tank; 23. Pressure reducing valve; 24. Altitude sensor; 25. Pressure sensor; 26. Inlet solenoid valve; 27. Outlet solenoid valve; 28. Operation panel; 29. ​​Start / stop switch; 30. Pressure holding button; 31. Altitude setting button; 32. Sensor board; 33. Aviation connector. Detailed Implementation

[0013] The present invention will be further described below with reference to specific embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the protection scope of the present invention. Example

[0014] like Figures 1-3 As shown, an electrically controlled air spring vibration isolation table with automatic leveling and pressure holding functions includes: Tabletop 1, platform 2, air springs 3, with several air springs 3 supported between tabletop 1 and platform 2; Air source system 4, which is connected to each air spring 3 through main air passage 5; Sensing system 6, the sensing system 6 includes a height detection unit 7 disposed at each air spring 3; The leveling actuator 8 includes a control valve group 9 correspondingly disposed on the air path of each air spring 3, and the control valve group 9 is used to control the opening and closing of the corresponding air path; The control system 10 includes a controller 11, the height detection unit 7 and the control valve group 9 are electrically connected to the controller 11, and the controller 11 is configured to control the operation of the control valve group 9 according to the signal of the height detection unit 7.

[0015] Specifically, the tabletop 1 is provided with a plurality of mounting holes 12, which can be used to fix different types of tooling and different utensils.

[0016] Preferred, such as Figures 4-5 As shown, the air spring 3 includes a spring housing 13, an upper housing 14, a flange 15, and a diaphragm 16. The spring housing 13 is provided with an air inlet 17 and an air outlet 18. A balance metal block 19 is provided in the middle of the upper housing 14. The height detection unit 7 is disposed in the balance metal block 19. The upper housing 14 is disposed on the spring housing 13 through the flange 15. The diaphragm 16 is connected between the upper housing 14 and the flange 15 to form a sealed air chamber.

[0017] Specifically, the upper housing 14 and the flange 15 are flexibly connected by the diaphragm 16 to form a flexible and expandable sealed air chamber. The compressibility of the gas is used to support the load on the platform 1 and isolate vibration. The flange 15 directly contacts and supports the platform 1, and transmits the load to the balancing metal block 19 of the upper housing 14.

[0018] More specifically, when compressed gas is filled into the spring housing, there is a through hole at the bottom of the upper housing 14 to send the gas into the diaphragm 16. The flange 15 is used to fasten the diaphragm 16 and the support platform 1. After inflation, the diaphragm 16 bulges up, which will lift the balance metal block 19, and the balance metal block 19 will lift the platform 1.

[0019] More preferably, a soft pad 20 is provided between the upper housing 14 and the spring housing 13.

[0020] Specifically, the soft pad 20 is used to increase the reliability of the seal.

[0021] Preferably, the air source system 4 includes an air pump 21, an air storage tank 22, and a pressure reducing valve 23 connected in sequence. The pressure reducing valve 23 is connected to the air inlet 17 of each air spring 3 through the main air passage 5.

[0022] Specifically, the pressure reducing valve 23 is configured to reduce and stabilize the high-pressure gas from the air pump 21 at a preset, safe system operating pressure value, providing stable gas source conditions for automatic leveling control and protecting downstream pipelines and components.

[0023] Preferably, the height detection unit 7 is a height sensor 24, which is integrated inside the balance metal block 19 of the air spring 3.

[0024] Specifically, the height sensor 24 is built into the balancing metal block 19, which can directly and accurately measure the displacement of the flange 15 relative to the balancing metal block 19. Since the flange 15 is connected to the upper housing 14 through the diaphragm 16, this displacement directly reflects the real-time height change of the support point of the platform 1, providing the most critical feedback signal for automatic leveling control.

[0025] More specifically, by coordinating the real-time height information of the air spring 3, corresponding upper and lower limit thresholds are set to achieve automatic leveling of the vibration isolation table.

[0026] Preferred, such as Figure 6 As shown, the control valve group 9 includes an intake solenoid valve 26 and an outlet solenoid valve 27. The intake solenoid valve 26 is connected to the intake port 17, and the outlet solenoid valve 27 is connected to the outlet port 18.

[0027] Specifically, both the intake solenoid valve 26 and the exhaust solenoid valve 27 are two-position two-way solenoid valves. After receiving the pulse signal from the controller 11 and switching states, the two-position two-way solenoid valves can maintain the current on / off state without continuous power supply, which significantly reduces energy consumption and fundamentally solves the problem of overheating and aging due to long-term operation, thereby improving the reliability and service life of long-term operation.

[0028] More specifically, when inflation is required, the controller 11 controls the intake solenoid valve 26 to open and the exhaust solenoid valve 27 to close, thereby inflating the air spring 3. When deflation is required, the controller 11 controls the exhaust solenoid valve 27 to open and the intake solenoid valve 26 to close, thereby inflating the air spring 3. When pressure is required, the controller 11 controls the intake solenoid valve 26 to close and the exhaust solenoid valve 27 to close, thereby inflating the air spring 3.

[0029] Furthermore, in this embodiment, both the intake solenoid valve 26 and the exhaust solenoid valve 27 are disposed in the inner cavity of the air spring 3.

[0030] Preferably, the side of the platform 2 is provided with an operation panel 28, such as... Figure 7 As shown, the operation panel 28 is equipped with a start / stop switch 29, a pressure holding button 30, and a height setting button 31. The operation panel 28 is electrically connected to the controller 11.

[0031] Specifically, the start / stop switch 29 is used to start or stop the system with one key, the pressure holding button 30 is used to manually enter the pressure holding mode, and the height setting button 31 is used to quickly switch between different preset working heights. By integrating an operation panel 28, users can control the automatic completion of the entire leveling and pressure holding process with a simple single operation, which greatly simplifies the operation steps, lowers the threshold for use, and improves work efficiency and reliability.

[0032] In specific implementation, the electrical cables of the height sensor 24, the intake solenoid valve 26, and the exhaust solenoid valve 27 are all connected to an integrated sensor board 32. The sensor board 32 is connected to the controller 11 through an air connector 33. The air connector 33 is set on the spring housing 13. The air connector 33 enables quick plugging and unplugging, simplifying wiring and reducing on-site installation complexity. Furthermore, in this embodiment, four air springs 3 are connected to the controller 11 through control lines. The functions of the controller 11 are integrated on the operation panel 28, thereby controlling the height of the air springs 3. The air springs 3 are connected to the air inlet 17 through the air pipeline controlled by the pressure reducing valve 23. The sensor board 32 receives the information from the height sensor 24 and sends it to the controller 11, which then issues corresponding open and close commands to the intake solenoid valve 26 and the exhaust solenoid valve 27 to realize the operation of inflating and deflating the air springs 3. This utility model achieves automatic leveling of the vibration table by coordinating the real-time height information of each air spring 3 and setting corresponding upper and lower limit thresholds.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An electrically controlled air spring vibration isolation table with automatic leveling and pressure holding functions, characterized in that, include: A tabletop, a platform, and air springs, with several of the air springs supporting the tabletop and the platform; An air supply system, which is connected to each air spring via a main air passage; The sensing system includes a height detection unit disposed at each air spring; A leveling actuator, the leveling actuator including a control valve group correspondingly disposed on each of the air spring air circuits, the control valve group being used to control the opening and closing of the corresponding air circuit; A control system, comprising a controller, wherein the height detection unit and the control valve assembly are electrically connected to the controller, and the controller is configured to control the operation of the control valve assembly based on the signal from the height detection unit.

2. The electrically controlled air spring vibration isolation table with automatic leveling and pressure holding functions according to claim 1, characterized in that: The air spring includes a spring housing, an upper housing, a flange, and a diaphragm. The spring housing has an air inlet and an air outlet. A balance metal block is provided in the middle of the upper housing. The height detection unit is located inside the balance metal block. The upper housing is mounted on the spring housing via the flange. The diaphragm is connected to the upper housing and the flange to form a sealed air chamber.

3. The electrically controlled air spring vibration isolation table with automatic leveling and pressure holding functions according to claim 2, characterized in that: A soft pad is provided between the upper housing and the spring housing.

4. The electrically controlled air spring vibration isolation table with automatic leveling and pressure holding functions according to claim 2, characterized in that: The air supply system includes an air pump, an air tank, and a pressure reducing valve connected in sequence. The pressure reducing valve is connected to the air inlet of each air spring through the main air circuit.

5. The electrically controlled air spring vibration isolation table with automatic leveling and pressure holding functions according to claim 2, characterized in that: The height detection unit is a height sensor, which is integrated inside the balance metal block of the air spring.

6. The electrically controlled air spring vibration isolation table with automatic leveling and pressure holding functions according to claim 2, characterized in that: The control valve assembly includes an intake solenoid valve and an outlet solenoid valve. The intake solenoid valve is connected to the intake port, and the outlet solenoid valve is connected to the outlet port.

7. The electrically controlled air spring vibration isolation table with automatic leveling and pressure holding functions according to claim 1, characterized in that: An operation panel is provided on the side of the platform. The operation panel is equipped with a start / stop switch, a pressure holding button, and a height setting button. The operation panel is electrically connected to the controller.

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