Anti-vibration permanent magnet motor driver

Abstract

The utility model discloses an anti-vibration permanent magnet motor driver, which comprises a permanent magnet motor driver and a mounting plate used for fixing the permanent magnet motor driver, the mounting plate is connected with a support plate through a plurality of shock absorbers, each shock absorber comprises an elastic piece and a damper, and the elastic piece is used for connecting the mounting plate and the support plate; and the damper is arranged at the end part of the elastic piece or between the mounting plate and the supporting plate. According to the utility model, through the design of the damper, when the permanent magnet motor driver is vibrated, the vibration force is reduced through the elastic member, and the elastic potential energy generated by the spring is attenuated through the damper, so that the vibration force can be rapidly and effectively reduced, and the anti-vibration effect of the permanent magnet motor driver is further improved.

Description

Technical Field

[0001] This utility model relates to the field of motor driver technology, specifically to an anti-vibration permanent magnet motor driver. Background Technology

[0002] The existing Chinese utility model patent with publication number CN221009955U discloses a motor driver with an anti-vibration structure. The motor driver is clamped by a clamping member and fixed in the clamping member by the threaded connection of bolts and nuts. Then, the clamping member slides on a sliding rod. The clamping member acts on a spring, and the spring buffers and reduces the vibration force on the motor driver, thereby preventing damage to the internal parts of the motor driver.

[0003] However, as mentioned above, since the spring vibrates synchronously when subjected to vibration force, it cannot quickly and effectively reduce the vibration force without any damping effect; therefore, the spring alone cannot provide a good anti-vibration effect for the motor driver. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a vibration-resistant permanent magnet motor driver to solve the technical problems mentioned in the prior art.

[0005] An anti-vibration permanent magnet motor driver includes a permanent magnet motor driver and a mounting plate for fixing it. The mounting plate is connected to a support plate via a plurality of vibration dampers, the vibration dampers comprising:

[0006] An elastic element is used to connect the mounting plate and the support plate;

[0007] A damper is disposed at the end of the elastic element or between the mounting plate and the support plate.

[0008] Optionally, the damper includes:

[0009] A fixed cylinder has an internal movable chamber and a pressure relief chamber. The bottoms of the movable chamber and the pressure relief chamber are connected by several fluid exchange holes. The movable chamber is filled with damping fluid.

[0010] The movable rod has one end connected to the elastic element, the mounting plate, or the support plate, and the other end passing through the end of the fixed cylinder and extending into the movable chamber where a piston is provided. The piston is in close contact with the inner wall of the movable chamber and in contact with the damping fluid, so as to slide along the axial direction of the movable rod to squeeze the damping fluid through the fluid exchange hole into the pressure relief chamber, or to draw the damping fluid into the movable chamber through the fluid exchange hole.

[0011] A pressure regulating valve is provided on the outer periphery of the pressure relief chamber. The pressure regulating valve is used to adjust the pressure in the pressure relief chamber when the piston slides along the axial direction of the movable rod.

[0012] Optionally, the damper further includes a pressure-stabilizing spring, which is sleeved on the outer periphery of the movable rod, and the two ends of the pressure-stabilizing spring are respectively connected to the inner wall of the movable chamber and the opposite surface of the piston.

[0013] Optionally, the fixed cylinder is further provided with an oil storage chamber, and the pressure regulating valve connects the pressure relief chamber and the oil storage chamber.

[0014] Optionally, an oil inlet is provided on one side of the top of the fixed cylinder, penetrating the oil storage chamber, and a filter element and / or an oil nozzle are provided in the oil inlet.

[0015] Optionally, the pressure regulating valve includes:

[0016] The first control valve is located at the oil drain port of the pressure relief chamber and opens when the movable rod retracts toward the interior of the fixed cylinder.

[0017] And a second control valve located at the oil return port of the pressure relief chamber, which opens when the movable rod extends toward the outside of the fixed cylinder.

[0018] Optionally, the oil drain port is located on the top side of the pressure relief chamber;

[0019] The oil return port is located on one side of the bottom of the pressure relief chamber.

[0020] Optionally, the elastic element is configured as a tower-shaped spring.

[0021] The beneficial effects that this utility model can produce include:

[0022] The present invention provides a vibration-resistant permanent magnet motor driver. By designing a damper, when the permanent magnet motor driver is subjected to vibration, the vibration force is reduced by the elastic element and the elastic potential energy generated by the spring is attenuated by the damper, thereby quickly and effectively reducing the vibration force and improving the vibration resistance of the permanent magnet motor driver. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an anti-vibration permanent magnet motor driver according to the present invention;

[0024] Figure 2 In this utility model Figure 1 A schematic diagram of the internal structure of a damper;

[0025] In the diagram: 1. Mounting plate, 2. Support plate, 3. Elastic element, 4. Damper, 5. Fixed cylinder, 6. Movable rod, 7. Movable chamber, 8. Pressure relief chamber, 9. Oil reservoir chamber, 10. Piston, 11. Pressure stabilizing spring, 12. Oil inlet, 13. First control valve, 14. Second control valve, 15. Fluid exchange hole. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1 As shown, this utility model provides a vibration-resistant permanent magnet motor driver, including a permanent magnet motor driver and a mounting plate 1 for fixing it. In this embodiment, the permanent magnet motor driver is mounted on the mounting plate 1 by screws or other fasteners. The mounting plate 1 has corresponding threaded holes configured according to the mounting hole positions of the permanent magnet motor driver. The mounting plate 1 is connected to a support plate 2 by a plurality of vibration dampers. The vibration dampers include elastic elements 3 and dampers 4. The elastic elements 3 are used to connect the mounting plate 1 and the support plate 2. The dampers 4 are disposed at the end of the elastic elements 3 or between the mounting plate 1 and the support plate 2. Specifically, the damper 4 includes a fixed cylinder 5, a movable rod 6, a piston 10, a pressure regulating valve, and a pressure stabilizing spring 11. Inside the fixed cylinder 5, a ring-shaped movable chamber 7, a pressure relief chamber 8, and an oil storage chamber 9 are arranged sequentially around the central axis. The bottoms of the movable chamber 7 and the pressure relief chamber 8 are connected by several fluid exchange holes 15. The movable chamber 7 is filled with damping fluid. One end of the movable rod 6 is connected to the elastic element 3, the mounting plate 1, or the support plate 2, and the other end passes through the end of the fixed cylinder 5 and extends into the movable chamber 7. A piston 10 is provided, which is in close contact with the inner wall of the movable chamber 7 and the damping fluid. The piston 10 slides along the axis of the movable rod 6, squeezing the damping fluid through the fluid exchange hole 15 into the pressure relief chamber 8, or drawing the damping fluid into the movable chamber 7 through the fluid exchange hole 15. A pressure regulating valve is provided on the outer periphery of the pressure relief chamber 8. The pressure regulating valve is used to adjust the pressure in the pressure relief chamber 8 when the piston 10 slides along the axis of the movable rod 6, to ensure the normal operation of the damper 4 and prevent negative or positive pressure from forming in the fixed cylinder 5, which would prevent the piston 10 from moving. In this embodiment, when the permanent magnet motor driver is subjected to vibration, the vibration force is reduced by the elastic element 3, and the elastic potential energy generated by the spring is attenuated by the damper 4, thereby quickly and effectively reducing the vibration force and improving the vibration resistance of the permanent magnet motor driver.

[0028] In the above, the damper 4 also includes a pressure stabilizing spring 11, which is sleeved on the outer periphery of the movable rod 6, and the two ends of the pressure stabilizing spring 11 are respectively connected to the inner wall of the movable chamber 7 and the opposite surface of the piston 10. When the damper 4 is used up, the piston 10 can be restored to the initial position by the pressure stabilizing spring 11 to ensure the effectiveness of the damper 4.

[0029] In the above, the pressure regulating valve connects the pressure relief chamber 8 and the oil storage chamber 9, allowing the damper 4 to discharge excess damping fluid from the pressure relief chamber 8 into the oil storage chamber 9 for buffering during retraction. This creates a negative pressure inside the pressure relief chamber 8 when the damper 4 outputs, drawing in the damping fluid from the oil storage chamber 9 and ensuring its circulation. Furthermore, an oil inlet 12 is provided on one side of the top of the fixed cylinder 5, penetrating the oil storage chamber 9. The oil inlet 12 contains a filter element and / or an oil nozzle, allowing the interior of the fixed cylinder 5 to communicate with the outside atmosphere, thus ensuring that the internal pressure of the fixed cylinder 5 is the same as the atmospheric pressure. It should be noted that, as... Figure 2 As shown, in order to prevent air from entering the pressure relief chamber 8 and causing wear when the piston 10 moves, the pressure relief chamber 8 is filled with damping fluid to ensure that the damping fluid is in full contact with the piston 10, thereby providing lubrication and cooling when the piston 10 moves. At the same time, before oil injection, the fixed cylinder 5 can be evacuated through the oil injection nozzle to ensure that no air enters the pressure relief chamber 8 when the damping fluid is injected later.

[0030] In the above description, the pressure regulating valve includes a first control valve 13 located at the oil drain port of the pressure relief chamber 8 and a second control valve 14 located at the oil return port of the pressure relief chamber 8. The first control valve 13 opens when the movable rod 6 retracts towards the interior of the fixed cylinder 5; the second control valve 14 opens when the movable rod 6 extends towards the exterior of the fixed cylinder 5. Specifically, the first control valve 13 and the second control valve 14 can be one-way valves to ensure unidirectional flow of damping fluid at the oil return port and the oil drain port, further preventing air from entering the pressure relief chamber 8. The oil drain port is located on the top side of the pressure relief chamber 8; the oil return port is located on the bottom side of the pressure relief chamber 8. Figure 2 As shown, the level of damping fluid in the oil storage chamber 9 must be at least above the height of the return port in the initial state to avoid air intake.

[0031] In this embodiment, the elastic element 3 is set as a tower-shaped spring. Since the tower-shaped spring can withstand greater pressure within the same mounting configuration, it can significantly reduce the volume of the vibration damper. Furthermore, the tower-shaped spring can generate damping force through internal friction during vibration, reducing the vibration amplitude and period, thus achieving vibration reduction and noise reduction effects, further improving the vibration resistance of the permanent magnet motor driver. Specifically, as... Figure 1As shown, the tower-shaped spring is sleeved on the outer surface of the movable rod 6, with its small end embedded in the bottom of the mounting plate 1 and its large end installed on the top of the fixed cylinder 5.

Claims

1. A vibration-resistant permanent magnet motor driver, comprising a permanent magnet motor driver and a mounting plate (1) for fixing thereto, the mounting plate (1) being connected to a support plate (2) via a plurality of vibration dampers, characterized in that, The vibration damper includes: An elastic element (3) is used to connect the mounting plate (1) and the support plate (2); A damper (4) is disposed at the end of the elastic member (3) or between the mounting plate (1) and the support plate (2).

2. The vibration-resistant permanent magnet motor driver according to claim 1, characterized in that, The damper (4) includes: The fixed cylinder (5) has an active chamber (7) and a pressure relief chamber (8) inside. The bottom of the active chamber (7) and the pressure relief chamber (8) are connected by several fluid exchange holes (15). The active chamber (7) is filled with damping fluid. The movable rod (6) is connected at one end to the elastic element (3), the mounting plate (1) or the support plate (2), and at the other end it passes through the end of the fixed cylinder (5) and extends into the movable chamber (7) where a piston (10) is provided. The piston (10) is in close contact with the inner wall of the movable chamber (7) and in contact with the damping fluid, so as to slide along the axial direction of the movable rod (6) to squeeze the damping fluid through the fluid exchange hole (15) into the pressure relief chamber (8), or to draw the damping fluid into the movable chamber (7) through the fluid exchange hole (15); A pressure regulating valve is provided on the outer periphery of the pressure relief chamber (8). The pressure regulating valve is used to adjust the pressure in the pressure relief chamber (8) when the piston (10) slides along the axial direction of the movable rod (6).

3. The vibration-resistant permanent magnet motor driver according to claim 2, characterized in that, The damper (4) also includes a pressure-stabilizing spring (11), which is sleeved on the outer periphery of the movable rod (6), and the two ends of the pressure-stabilizing spring (11) are respectively connected to the inner wall of the movable chamber (7) and the opposite surface of the piston (10).

4. The vibration-resistant permanent magnet motor driver according to claim 2, characterized in that, The fixed cylinder (5) is also provided with an oil storage chamber (9), and the pressure regulating valve connects the pressure relief chamber (8) and the oil storage chamber (9).

5. The vibration-resistant permanent magnet motor driver according to claim 4, characterized in that, An oil inlet (12) is provided on one side of the top of the fixed cylinder (5) through the oil storage chamber (9), and a filter element and / or an oil nozzle are provided in the oil inlet (12).

6. The vibration-resistant permanent magnet motor driver according to claim 4, characterized in that, The pressure regulating valve includes: The first control valve (13) is located at the oil outlet of the pressure relief chamber (8). When the movable rod (6) retracts toward the interior of the fixed cylinder (5), the first control valve (13) opens. And a second control valve (14) located at the oil return port of the pressure relief chamber (8), which opens when the movable rod (6) extends toward the outside of the fixed cylinder (5).

7. The vibration-resistant permanent magnet motor driver according to claim 6, characterized in that, The oil drain port is located on one side of the top of the pressure relief chamber (8); The oil return port is located on the bottom side of the pressure relief chamber (8).

8. The vibration-resistant permanent magnet motor driver according to claim 1, characterized in that, The elastic element (3) is configured as a tower-shaped spring.

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