Motor mounting seat

Abstract

The invention relates to the technical field of motors, in particular to a motor mounting seat which comprises a first mounting frame, a second mounting frame and a plurality of adjusting assemblies. And the first mounting frame and the second mounting frame are oppositely arranged. The adjusting assembly comprises an adjusting bolt and a puller spring. And the jacking spring is arranged between the first mounting frame and the second mounting frame. The adjusting bolt is connected between the first mounting frame and the second mounting frame so that the adjusting bolt can adjust the distance between the first mounting frame and the second mounting frame. The multiple adjusting assemblies are arranged in the circumferential direction of the first mounting frame. The vibration transmission capacity of the mounting base can be adjusted by adjusting the connecting rigidity between the first mounting frame and the second mounting frame. And the condition that the vibration generated by the motor is transmitted to the equipment is changed. Therefore, the vibration frequency of the mounting seat is adjusted, and the resonance frequency of the mounting seat and the motor is further changed. And the resonant frequency avoids the use rotating speed interval of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and more particularly, to a motor mounting seat. Background Art

[0002] In the prior art, there is a common problem of mechanical resonance between the motor and surrounding equipment or structures after installation. This resonance phenomenon mainly stems from the coincidence of the periodic exciting force generated during motor operation with the natural frequency of the system, resulting in a significant increase in the vibration amplitude. Most of the currently widely used motor mounting seats are of rigid fixed structures, and their key parameters such as stiffness and damping ratio are fixed values and cannot be dynamically adjusted according to the actual working conditions. This structural limitation makes the mounting seat unable to effectively change the natural frequency of the system nor provide sufficient dissipation of vibration energy, making it difficult to fundamentally solve the resonance problem.

[0003] In practical applications, engineers usually adopt a passive avoidance strategy, that is, by adjusting the motor speed to avoid the resonance range. However, this method severely restricts the performance of the motor: on the one hand, it forces the motor to operate in a non-optimal speed range, resulting in reduced energy efficiency; on the other hand, in some occasions where precise speed control is required (such as precision machining, medical equipment, etc.), this speed limitation will directly affect the process accuracy and function realization of the equipment. In addition, long-term operation in the resonance state will also accelerate the fatigue damage of the motor and related components, shorten the service life of the equipment, and increase the maintenance cost.

[0004] With the development of industrial equipment towards high efficiency and precision, traditional mounting seats with fixed parameters have been difficult to meet the requirements of modern industry for vibration control. Especially in high-tech fields such as aerospace and new energy vehicles, there is an urgent need for a new mounting solution that can actively adjust dynamic parameters to effectively suppress resonance phenomena. Summary of the Invention

[0005] The purpose of the present invention is to provide a motor mounting seat that can adjust parameters such as stiffness and damping ratio, thereby changing the resonance frequency.

[0006] The embodiments of the present invention are implemented by the following technical solutions: A motor mounting seat includes a first mounting frame, a second mounting frame, and a plurality of adjusting components; the first mounting frame and the second mounting frame are arranged opposite to each other; the adjusting component includes an adjusting bolt and a top spring; the top spring is disposed between the first mounting frame and the second mounting frame; the adjusting bolt is connected between the first mounting frame and the second mounting frame to enable the adjusting bolt to adjust the distance between the first mounting frame and the second mounting frame; a plurality of the adjusting components are arranged circumferentially along the first mounting frame.

[0007] Further, a ball head is provided at one end of the adjusting bolt; the first mounting bracket is provided with a mounting groove for mounting the ball head, so that the ball head can be rotatably mounted inside the mounting groove.

[0008] Further, a guiding ball is further included; the second mounting bracket is provided with a plurality of connection holes for the adjusting bolt to pass through; a spherical groove is provided at the orifice of the connection hole of the second mounting bracket; the spherical groove is provided on the side of the second mounting bracket away from the first mounting bracket and the spherical groove is arranged in cooperation with the guiding ball; the guiding ball is provided with a communication hole for the adjusting bolt to pass through.

[0009] Further, the inner diameter of the connection hole is larger than the outer diameter of the adjusting bolt, so that a swinging gap is reserved between the hole wall of the connection hole and the outer wall of the adjusting bolt.

[0010] Further, the first mounting bracket is provided with a plurality of connection holes for the adjusting bolt to pass through; a spherical groove is provided at the orifice of the connection hole of the first mounting bracket; the spherical groove is provided on the side of the first mounting bracket away from the second mounting bracket and the spherical groove is arranged in cooperation with the ball head.

[0011] Further, the guiding ball is arranged in a semi-spherical shape; the axial direction of the communication hole is perpendicular to the plane of the guiding ball.

[0012] Further, the pressing spring is sleeved outside the adjusting bolt.

[0013] Further, both the first mounting bracket and the second mounting bracket are rectangular; four groups of adjusting components are provided and are respectively arranged at four corners of the first mounting bracket.

[0014] Further, both the first mounting bracket and the second mounting bracket are provided with mounting screw holes.

[0015] Further, the first mounting bracket and the second mounting bracket are further provided with mounting cross beams.

[0016] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects: When the motor mount of the present invention is in use, the adjusting bolt connects the first mounting bracket and the second mounting bracket. During the process of tightening the adjusting bolt, the top spring arranged between the first mounting bracket and the second mounting bracket is compressed. The tighter the top spring is compressed, the greater the elastic force generated by the top spring, and the greater the connection stiffness between the first mounting bracket and the second mounting bracket. On the contrary, the looser the top spring is compressed, the smaller the connection stiffness between the first mounting bracket and the second mounting bracket. By adjusting the connection stiffness between the first mounting bracket and the second mounting bracket, the vibration transfer ability of the mount can be adjusted. Furthermore, the situation where the vibration generated by the motor is transmitted to the equipment changes. This also adjusts the vibration frequency of the mount, and further changes the resonance frequency with the motor. That is to say, by adjusting the compression degree of several top springs, the resonance frequency can be changed, so that the resonance frequency can avoid the operating speed range of the motor.

[0017] The adjusting bolt is provided with a ball head, and the matching mounting groove enables the adjusting bolt to swing in any direction, so as to be able to adapt to vibrations in all directions. The cooperation between the guiding ball and the spherical groove enables the adjusting bolt to swing relative to both the first mounting bracket and the second mounting bracket. Furthermore, the first mounting bracket and the second mounting bracket can not only approach each other, but also swing within their plane. Thus, it can better adapt to vibrations in all directions.

[0018] Both the first mounting bracket and the second mounting bracket are provided with spherical grooves, so that their shapes can be set to be exactly the same. Furthermore, there is no need to distinguish between the first mounting bracket and the second mounting bracket, which is convenient for processing and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the motor mount of the present invention.

[0020] Figure 2 It is a schematic diagram of the first mounting bracket connecting the ball head through the mounting groove.

[0021] Figure 3 It is a schematic diagram of the first mounting bracket connecting the ball head through the spherical groove.

[0022] Figure 4 It is a schematic diagram of the relative offset between the first mounting bracket and the second mounting bracket.

[0023] Figure 5 For Figure 4 The enlarged view at b in

[0024] Figure 6 It is a schematic diagram of the cooperation between the adjusting bolt and the guiding ball.

[0025] Figure 7 For Figure 1 The enlarged view at a in

[0026] Reference numerals: 1 - first mounting bracket, 2 - second mounting bracket, 3 - adjusting bolt, 4 - pressing spring, 5 - ball head, 6 - mounting groove, 7 - guiding ball, 8 - nut, 9 - spherical groove, 10 - swinging clearance. Detailed implementation manner

[0027] As Figures 1 - 7 As shown in the figure, this embodiment provides a motor mounting seat, which includes a first mounting bracket 1, a second mounting bracket 2 and a plurality of adjusting components. The first mounting bracket 1 and the second mounting bracket 2 are arranged oppositely and there is a gap between them. The adjusting component includes an adjusting bolt 3 and a pressing spring 4. The pressing spring 4 is arranged between the first mounting bracket 1 and the second mounting bracket 2, and thus pushes the first mounting bracket 1 and the second mounting bracket 2 apart. The adjusting bolt 3 is connected between the first mounting bracket 1 and the second mounting bracket 2, and thus pulls the first mounting bracket 1 and the second mounting bracket 2 tightly. That is to say, when the adjusting bolt 3 pulls the first mounting bracket 1 and the second mounting bracket 2 tightly, the pressing spring 4 pushes the first mounting bracket 1 and the second mounting bracket 2 apart to both sides, so that the distance between the first mounting bracket 1 and the second mounting bracket 2 remains stable under the combined action of the adjusting bolt 3 and the pressing spring 4. The distance between the first mounting bracket 1 and the second mounting bracket 2 can be adjusted by rotating the nut of the adjusting bolt 3. A plurality of adjusting components are arranged along the circumferential direction of the first mounting bracket 1. For the overall stability, the first mounting bracket 1 and the second mounting bracket 2 are arranged in a rectangular frame shape. A plurality of adjusting components are arranged at the four corners of the first mounting bracket 1 and the second mounting bracket 2. Figure 1 As shown, it is the basic framework of the mounting seat. In practice, components such as mounting screw holes or mounting cross beams can also be provided according to needs, so that it can better adapt to the mounting parts of the motor and equipment. The mounting cross beam can be a cross beam connecting two opposite sides of the first mounting bracket 1 or the second mounting bracket 2. The mounting screw holes can be provided on the first mounting bracket 1 and the second mounting bracket 2, or can also be provided on the mounting cross beam.

[0028] When the motor mounting base of the present invention is in use, the first mounting bracket 1 is mounted on the device, and the motor is mounted on the second mounting bracket 2. Thus, the motor is mounted on the device through the motor mounting base. The adjusting bolt 3 connects the first mounting bracket 1 and the second mounting bracket 2. During the process of tightening the adjusting bolt 3, the top compression spring 4 disposed between the first mounting bracket 1 and the second mounting bracket 2 is compressed. The tighter the top compression spring 4 is compressed, the greater the elastic force generated by the top compression spring 4, and the greater the connection stiffness between the first mounting bracket 1 and the second mounting bracket 2. Conversely, the looser the top compression spring 4 is compressed, the smaller the connection stiffness between the first mounting bracket 1 and the second mounting bracket 2. By adjusting the connection stiffness between the first mounting bracket 1 and the second mounting bracket 2, the vibration transfer ability of the mounting base can be adjusted. Thus, the situation where the vibration generated by the motor is transmitted to the device changes. This also adjusts the vibration frequency of the mounting base, and then changes the resonance frequency with the motor. That is to say, by adjusting the pressing degree of a plurality of top compression springs 4, the resonance frequency can be changed, so that the resonance frequency can avoid the operating speed range of the motor.

[0029] In this embodiment, a ball head 5 is provided at one end of the adjusting bolt 3. The first mounting bracket 1 is provided with a mounting groove 6 for mounting the ball head 5, so that the ball head 5 can be rotatably mounted inside the mounting groove 6. As Figure 2 shown, the adjusting bolt 3 is provided with the ball head 5, and the cooperation with the mounting groove 6 enables the adjusting bolt 3 to wobble relative to the first mounting bracket 1 in any direction, and thus can adapt to vibrations in all directions.

[0030] In this embodiment, a guiding ball 7 is further included. As Figure 4 、 Figure 5 and Figure 6 shown, the second mounting bracket 2 is provided with a plurality of connection holes for the adjusting bolt 3 to pass through. The second mounting bracket 2 is provided with a spherical groove 9 at the orifice of the connection hole. The spherical groove 9 is disposed on the side of the second mounting bracket 2 away from the first mounting bracket 1 and the spherical groove 9 is arranged in cooperation with the guiding ball 7. The spherical groove 9 is arranged in cooperation with the guiding ball 7, so that the spherical surface of the guiding ball 7 fits against the groove wall of the spherical groove 9. This enables the guiding ball 7 to rotate within the spherical groove 9. The guiding ball 7 is provided with a communication hole for the adjusting bolt 3 to pass through.

[0031] When in use, the adjusting bolt 3 passes through the second mounting plate and the guiding ball 7 accommodated in the spherical groove 9. Then the nut 8 is tightened, so that the guiding ball 7 is pressed inside the spherical groove 9. The direction of the motor vibration may be in all directions around, and the second mounting bracket 2 may wobble relative to the first mounting bracket 1 in all directions. At this time, the ball head 5 swings relative to the mounting groove 6 and the guiding ball 7 swings relative to the spherical groove 9. Thus, the adjusting bolt 3 tilts and swings relative to the first mounting bracket 1 and the second mounting bracket 2, and thus the second mounting bracket 2 can wobble relative to the first mounting bracket 1 in all directions.

[0032] The cooperation between the guide ball 7 and the spherical groove 9 enables the adjusting bolt 3 to swing relative to the first mounting frame 1 and the second mounting frame 2, so that the first mounting frame 1 and the second mounting frame 2 can not only approach each other but also swing within the plane where they are located, thereby better adapting to vibrations in all directions.

[0033] In this embodiment, the inner diameter of the connecting hole is larger than the outer diameter of the adjusting bolt 3, so that a swing gap 10 is reserved between the hole wall of the connecting hole and the outer wall of the adjusting bolt 3. The reserved swing gap 10 allows the adjusting bolt 3 to have a certain swing space when swinging, so that the first mounting frame 1 and the second mounting frame 2 can swing relative to each other. The width of the swing gap 10 can be set according to actual conditions to adapt it to the swing amplitude. At the same time, the setting of the swing gap 10 also limits the swing amplitude of the adjusting bolt 3 to avoid excessive swing amplitude.

[0034] This embodiment is another implementation scheme, and the change lies in the connection method between the ball head 5 and the first mounting frame 1. Specifically, the first mounting frame 1 is provided with a plurality of connection holes for the adjustment bolts 3 to pass through. Figure 5 As shown, the first mounting frame 1 is provided with a spherical groove 9 at the opening of the connecting hole. The spherical groove 9 is provided at a side of the first mounting frame 1 away from the second mounting frame 2 and the spherical groove 9 is provided in cooperation with the ball head 5.

[0035] When in use, the adjusting bolt 3 is inserted through the first mounting frame 1 and the second mounting frame 2, and the guide ball 7 is placed inside the spherical groove 9 of the second mounting frame 2, and then the bolt is tightened. The first mounting frame 1 is also provided with a spherical groove 9 to cooperate, so that the adjusting bolt 3 can also swing normally relative to the first mounting frame 1. This makes the structures of the first mounting frame 1 and the second mounting frame 2 completely identical, and there is no need to distinguish between the first mounting frame 1 and the second mounting frame 2, which is convenient for processing and assembly.

[0036] In this embodiment, the guide ball 7 is arranged in a semi-spherical shape, so it has only one plane. The axial direction of the connecting hole is perpendicular to the plane of the guide ball 7. The nut 8 is installed in a flat manner on the plane of the guide ball 7, and the combination effect is better.

[0037] In this embodiment, the tension spring 4 is sleeved on the outside of the adjusting bolt 3, so that the tension spring 4 is restricted by the adjusting bolt 3 and will not fall off.

Claims

1. A motor mounting base, characterized in that: It includes a first mounting bracket, a second mounting bracket and a number of adjusting components; the first mounting bracket and the second mounting bracket are arranged oppositely; the adjusting component includes an adjusting bolt and a pressing spring; the pressing spring is arranged between the first mounting bracket and the second mounting bracket; the adjusting bolt is connected between the first mounting bracket and the second mounting bracket so that the adjusting bolt adjusts the distance between the first mounting bracket and the second mounting bracket; a number of the adjusting components are arranged circumferentially along the first mounting bracket.

2. The motor mounting base according to claim 1, characterized in that: One end of the adjusting bolt is provided with a ball head; the first mounting bracket is provided with a mounting groove for mounting the ball head so that the ball head is rotatably mounted inside the mounting groove.

3. The motor mounting base according to claim 2, wherein: It further includes a guiding ball; the second mounting bracket is provided with a number of connection holes for the adjusting bolt to pass through; the second mounting bracket is provided with a spherical groove at the orifice of the connection hole; the spherical groove is arranged on the side of the second mounting bracket away from the first mounting bracket and the spherical groove is arranged in cooperation with the guiding ball; the guiding ball is provided with a communication hole for the adjusting bolt to pass through.

4. The motor mounting base according to claim 3, characterized in that: The inner diameter of the connection hole is larger than the outer diameter of the adjusting bolt so that there is a swinging gap reserved between the hole wall of the connection hole and the outer wall of the adjusting bolt.

5. The motor mounting base according to claim 4, characterized in that: The first mounting bracket is provided with a number of connection holes for the adjusting bolt to pass through; the first mounting bracket is provided with a spherical groove at the orifice of the connection hole; the spherical groove is arranged on the side of the first mounting bracket away from the second mounting bracket and the spherical groove is arranged in cooperation with the ball head.

6. The motor mounting base according to claim 5, wherein: The guiding ball is arranged in a semi-spherical shape; the axial direction of the communication hole is perpendicular to the plane of the guiding ball.

7. The motor mounting base according to claim 6, characterized in that: The pressing spring is sleeved outside the adjusting bolt.

8. The motor mounting base according to claim 7, characterized in that: Both the first mounting bracket and the second mounting bracket are rectangular; there are four groups of the adjusting components and each group is arranged at the four corners of the first mounting bracket.

9. The motor mounting base according to claim 8, characterized in that: Both the first mounting bracket and the second mounting bracket are provided with mounting screw holes.

10. The motor mounting base according to claim 9, characterized in that: The first mounting bracket and the second mounting bracket are further provided with mounting beams.

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