Self-balancing rotor structure

Abstract

The invention provides a self-balancing rotor structure, which comprises a self-balancing rotor, a shaft, a rotor core, an annular guider and adjusting units, and is characterized in that the self-balancing rotor is fixedly connected with the rotor core through the shaft, the annular guider is arranged above the rotor core, the annular guider and the shaft are coaxially arranged, and a plurality of adjusting units are uniformly distributed in the circumferential direction of the inner wall of the annular guider. The adjusting unit is used for adjusting dynamic balance of the rotor. The self-balancing rotor structure has the beneficial effects that when the rotor runs, the pressure value detected by the pressure sensor in real time changes, and when the unbalance amount of the rotor is increased, the pressure sensor transmits a signal to the ECU, the micro servo rotor is driven according to a set program, the position of the counterweight assembly is changed, and the self-balancing rotor structure is convenient to operate. The unbalance of the rotor is reduced, and the dynamic balance requirement of the rotor is met. The function that the rotor does not need to be shut down is achieved, and reliability and safety of the rotor are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rotors, and in particular relates to a self-balancing rotor structure. Background Art

[0002] In existing high-speed systems, the rotor is prone to vibration and noise due to the influence of unbalanced mass, which has a great impact on the performance of the rotor. At the same time, the rotor is also subject to changes in bearing load during operation, resulting in speed and load fluctuations, which in turn affect the stability and efficiency of the rotor. In order to solve these problems, researchers have proposed many improvement measures. For example, a shock absorber can be installed on the rotor to reduce vibration and noise; precise mass balance design can be used to make the load distribution of the rotor more uniform under various working conditions, reduce vibration and noise; and the rotor can be dynamically adjusted to always maintain it in the best state, improve the efficiency of the rotor and reduce noise. However, there are still some problems with existing technologies. For example, these technologies require additional devices or complex control systems to implement, which reduces efficiency. In addition, these technologies may require regular maintenance and replacement of parts, downtime for inspection and repair, and increase the operating cost of the rotor. Summary of the invention

[0003] In view of this, the present invention aims to provide a self-balancing rotor structure, which solves the problem that the rotor can meet the dynamic balancing requirement of the rotor without stopping the rotor.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A self-balancing rotor structure comprises a self-balancing rotor, a shaft, a rotor core, an annular guide and an adjustment unit. The self-balancing rotor is fixedly connected to the rotor core via the shaft. An annular guide is arranged above the rotor core and is coaxially arranged with the shaft. A plurality of adjustment units are evenly distributed circumferentially on the inner wall of the annular guide. The adjustment units are used to adjust the dynamic balance of the rotor.

[0006] Furthermore, the cross section of the annular guide is L-shaped, and the annular guide and the top surface of the rotor core form an annular groove.

[0007] Furthermore, the adjustment unit includes a counterweight assembly, an adjustment assembly and a control system. The counterweight assembly and the adjustment assembly are connected via a lead screw, and the control system drives the counterweight assembly to approach or move away from the adjustment assembly to adjust the dynamic balance of the rotor.

[0008] Furthermore, the control system is an ECU.

[0009] Furthermore, the counterweight assembly includes an adjustment block and an initial counterweight block. The adjustment block is slidably connected to the inner wall of the annular guide, and the initial counterweight block is installed on the upper side.

[0010] Furthermore, the adjustment block is connected to the initial counterweight block via a self-locking thread.

[0011] Furthermore, the adjustment component includes a pressure sensor, a fixed disk and a micro servo rotor. The pressure sensor and the micro servo rotor are both connected to the control ECU. The fixed disk is located above the rotor core and is sleeved on the outside of the shaft. The pressure sensor and the pressure plate are fixedly installed above the fixed disk. The micro servo rotor is installed on one side. The micro servo rotor and the adjustment block are connected by a lead screw, so that the micro servo rotor can drive the adjustment block to rotate through the lead screw, thereby making the counterweight assembly approach or move away from the adjustment component.

[0012] Furthermore, the adjustment units are evenly distributed in the annular groove in groups of 3 or in multiples of 3.

[0013] Furthermore, during the initial assembly, the initial counterweight blocks are accurately mass-distributed according to the dynamic balance of the self-balancing rotor, and are individually counterweighted to minimize the imbalance.

[0014] Furthermore, the adjustment assembly and the counterweight assembly are both installed in the positioning hole.

[0015] Compared with the prior art, the self-balancing rotor structure of the present invention has the following advantages:

[0016] (1) In the self-balancing rotor structure of the present invention, when the rotor is running, the pressure value detected by the pressure sensor in real time changes. When the rotor imbalance increases, the pressure sensor transmits a signal to the ECU, and according to the set program, the micro servo rotor is driven to change the position of the counterweight assembly, reduce the rotor imbalance, and meet the rotor dynamic balance requirements. The function of the rotor does not need to be shut down is realized, and its reliability and safety are improved.

[0017] (2) The self-balancing rotor structure of the present invention adjusts the dynamic balance of the rotor by changing the position of the adjustment block in the annular guide in real time during the operation of the rotor, thereby eliminating vibration and noise caused by imbalance and improving the efficiency and stability of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 is a schematic diagram of a self-balancing rotor structure according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0021] Description of reference numerals:

[0022] 1-self-balancing rotor; 2-shaft; 3-rotor core; 4-counterweight assembly; 41-adjustment block; 42-initial counterweight block; 5-annular guide; 6-screw; 7-positioning hole; 8-adjustment assembly; 81-pressure sensor; 82-fixed plate; 83-micro servo rotor; 9-pressure plate; 10-annular groove. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0027] A self-balancing rotor structure, such as Figure 1 and 2 As shown, it includes a self-balancing rotor 1, a shaft 2, a rotor core 3, an annular guide 5 and an adjustment unit. The self-balancing rotor 1 is fixedly connected to the rotor core 3 through the shaft 2. An annular guide 5 is provided above the rotor core 3, and the annular guide 5 is coaxially arranged with the shaft 2. A plurality of adjustment units are evenly distributed on the inner wall of the annular guide 5 in the circumferential direction. The adjustment units are used to adjust the dynamic balance of the rotor.

[0028] Preferably, the cross section of the annular guide 5 is L-shaped, and the annular guide 5 and the top surface of the rotor core 3 form an annular groove 10 .

[0029] The adjustment unit includes a counterweight assembly 4, an adjustment assembly 8 and a control system. The counterweight assembly 4 and the adjustment assembly 8 are connected by a lead screw 6, and the control system drives the counterweight assembly 4 to approach or move away from the adjustment assembly 8 to adjust the dynamic balance of the rotor. The control system is an ECU.

[0030] In one or more embodiments, the counterweight assembly 4 includes an adjustment block 41 and an initial counterweight block 42 . The adjustment block 41 is slidably connected to the inner wall of the annular guide 5 , and the initial counterweight block 42 is installed on the upper side.

[0031] Preferably, the adjustment block 41 is located inside the annular groove 10. Preferably, the adjustment block 41 is connected to the initial counterweight block 42 via a self-locking thread.

[0032] In one or more embodiments, the adjustment assembly 8 includes a pressure sensor 81, a fixed disk 82 and a micro servo rotor 83. The pressure sensor 81 and the micro servo rotor 83 are both connected to the control ECU by signals. The fixed disk 82 is an annular disk. The fixed disk 82 is located above the rotor core 3 and is sleeved on the outside of the shaft 2. The pressure sensor 81 and the pressure plate 9 are fixedly installed above the fixed disk 82. The pressure plate 9 fixes the micro servo rotor 83 between the fixed disk 82 and the annular groove 10. The micro servo rotor 83 and the adjustment block 41 are connected by a screw 6. By driving the micro servo rotor 83, the screw 6 can drive the adjustment block 41 to rotate, so that the counterweight assembly 4 can approach or move away from the adjustment assembly 8.

[0033] Preferably, the adjustment components 8 are evenly distributed in the annular groove 10 in groups of three or in multiples of three.

[0034] Preferably, the counterweight assemblies 4 are evenly distributed in the annular groove 10 in groups of three or in multiples of three.

[0035] Preferably, the pressure sensors 81 are evenly distributed in the annular groove 10 in groups of three or in multiples of three.

[0036] Preferably, the pressure sensor 81 may be integrated into a control ECU, and the control ECU may control the micro servo rotor 83 .

[0037] In some embodiments, during initial assembly, the initial balancing weight 42 is accurately distributed in accordance with the dynamic balance of the self-balancing rotor 1 and is individually weighted to minimize the imbalance.

[0038] In some embodiments, during initial assembly, the adjustment assembly 8 and the counterweight assembly 4 are installed in the most suitable positioning hole 7 .

[0039] Working principle of a self-balancing rotor structure:

[0040] When the self-balancing rotor 1 is running, the pressure value detected by the pressure sensor 81 in real time changes. When the unbalance amount of the self-balancing rotor 1 increases, the pressure sensor 81 transmits a signal to the ECU. According to the set program, the ECU drives the micro servo rotor 83, so that the screw 6 can drive the adjustment block 41 to rotate, so that the position of the counterweight assembly 4 can be changed, the unbalance amount of the self-balancing rotor 1 can be reduced, and the dynamic balance requirement of the rotor can be met.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-balancing rotor structure, characterized in that: The invention comprises a self-balancing rotor, a shaft, a rotor core, an annular guide and an adjustment unit. The self-balancing rotor is fixedly connected to the rotor core through the shaft. An annular guide is arranged above the rotor core and is coaxial with the shaft. A plurality of adjustment units are evenly distributed on the inner wall of the annular guide in the circumferential direction. The adjustment units are used to adjust the dynamic balance of the rotor.

2. A self-balancing rotor structure according to claim 1, characterized in that: The cross section of the annular guide is L-shaped, and the annular guide and the top surface of the rotor core form an annular groove.

3. A self-balancing rotor structure according to claim 2, characterized in that: The adjusting unit includes a counterweight assembly, an adjusting assembly and a control system. The counterweight assembly and the adjusting assembly are connected by a lead screw, and the control system drives the counterweight assembly to approach or move away from the adjusting assembly to adjust the dynamic balance of the rotor.

4. A self-balancing rotor structure according to claim 3, characterized in that: The control system is ECU.

5. A self-balancing rotor structure according to claim 3, characterized in that: The counterweight assembly comprises an adjusting block and an initial counterweight block. The adjusting block is slidably connected to the inner wall of the annular guide, and the initial counterweight block is installed on the upper part.

6. A self-balancing rotor structure according to claim 5, characterized in that: The adjusting block is connected to the initial counterweight block through a self-locking thread.

7. A self-balancing rotor structure according to claim 3, characterized in that: The adjustment component includes a pressure sensor, a fixed plate and a micro servo rotor. The pressure sensor and the micro servo rotor are both connected to the control ECU. The fixed plate is located above the rotor core and is sleeved on the outside of the shaft. The pressure sensor and the pressure plate are fixedly installed above the fixed plate. The micro servo rotor is installed on one side. The micro servo rotor and the adjustment block are connected by a screw, so that the micro servo rotor can drive the adjustment block to rotate through the screw, thereby making the counterweight assembly approach or move away from the adjustment component.

8. A self-balancing rotor structure according to claim 3, characterized in that: The regulating units are evenly distributed in the annular groove in groups of 3 or in a number multiple of 3.

9. A self-balancing rotor structure according to claim 5, characterized in that: During initial assembly, the initial weights are precisely distributed according to the dynamic balance of the self-balancing rotor and are individually weighted to minimize the imbalance.

10. A self-balancing rotor structure according to claim 3, characterized in that: The adjusting assembly and the counterweight assembly are both installed in the positioning hole.

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