Motor damping mechanism of wind power generation experiment device

Abstract

The utility model relates to the technical field of wind power generation experiment equipment, and discloses a motor damping mechanism of a wind power generation experiment device, which is characterized by comprising a first damping assembly arranged on a motor base, the first damping assembly comprises a connecting plate and a plurality of connecting columns fixedly arranged on the connecting plate, the upper ends of the connecting columns penetrate through connecting holes of the motor base and are locked through nuts, supporting pieces are arranged on the portions, located on the lower side of the motor base, of the connecting columns in a sliding mode, and the portions, located between the supporting pieces and the connecting plate, of the connecting columns are sleeved with damping sleeves. The outer side of the damping sleeve is sleeved with a compression spring. The motor has the beneficial effects of stable structure, good damping effect and capability of effectively prolonging the service life of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation experimental equipment, in particular to a motor vibration reduction mechanism of a wind power generation experimental device. Background Art

[0002] Wind power generation equipment uses the natural wind force. The wind force acts on the blades to drive the blades to rotate, and then drives the rotor in the generator to rotate to generate electricity. Wind power generation is a clean energy with great market prospects. Therefore, various colleges and universities also set up wind power generation majors. In order to facilitate higher research and design of wind power generation equipment, a wind power generation experimental device is usually installed in the laboratory for teaching and research. The wind power generation experimental device usually uses a motor as a power source to simulate the natural wind force to drive the blades to rotate. After the blades rotate, the power is transmitted to the rotor of the generator through the transmission shaft to generate electricity. The motor is installed on the platform, and the gearbox is connected to the motor shaft. During the operation of the entire wind power generation device, the motor itself will vibrate, and the platform will also vibrate due to the rotation of the blades. The frequencies of these two vibrations are different. The motor is greatly damaged under the vibration of two different frequencies, which seriously affects the working stability and service life of the motor. Utility Model Content

[0003] In order to solve the above problems existing in the prior art, the utility model provides a motor damping mechanism of a wind power generation experimental device, which can effectively reduce the vibration of the motor, improve the overall stability, and increase the service life of the motor.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A motor damping mechanism for a wind power generation experimental device, characterized in that it comprises a first damping assembly arranged on a motor base;

[0006] The first shock-absorbing assembly includes a connecting plate and a plurality of connecting columns fixed on the connecting plate, the upper ends of the connecting columns pass through the connecting holes of the motor base and are locked by nuts, a support member is slidably provided on the connecting column at the lower side of the motor base, a shock-absorbing sleeve is sleeved on the portion of the connecting column located between the support member and the connecting plate, and a compression spring is sleeved on the outer side of the shock-absorbing sleeve.

[0007] Preferably, the shock-absorbing sleeve is configured as a nylon sleeve, the support member is an annular structure, and the connecting column passes through the support member;

[0008] The lower side of the support member is provided with a limiting convex ring, and the top surface of the connecting plate is provided with an annular groove coaxially distributed with the connecting column. The lower end of the compression spring abuts against the bottom surface of the annular groove, and the upper end of the compression spring is located on the inner side of the limiting convex ring and abuts against the bottom surface of the support member.

[0009] A first shock-absorbing assembly is arranged on the base of the motor, and a shock-absorbing sleeve and a compression spring combination are used to achieve effective shock absorption, reduce interference of platform vibration on the motor, and improve stability and service life of the motor.

[0010] Preferably, a flexible protective sleeve is provided between the support member and the connecting plate and is sleeved on the outside of the compression spring. The flexible protective sleeve plays a role of further buffering and shock absorption on the one hand, and covers the compression spring on the other hand to protect the compression spring.

[0011] Preferably, the connecting plate is provided with a plurality of mounting holes for connecting with the platform, wherein the mounting holes are used for motor installation.

[0012] Preferably, it also includes a second shock absorbing assembly arranged on the motor shaft; the second shock absorbing assembly includes a transmission shaft and two sleeves, the sleeve is provided with a connecting plate at one end facing the transmission shaft, the two end sides of the transmission shaft are provided with a plurality of first threaded holes evenly distributed along the circumference, the end face of the connecting plate is provided with a second threaded hole corresponding to the first threaded hole, and the axis of the first threaded hole is perpendicular to the axis of the second threaded hole; a connecting piece is provided between the first threaded hole and the second threaded hole, and the two ends of the connecting piece are provided with through holes with mutually perpendicular axes, one through hole is fastened to the first threaded hole by a first bolt, and the other through hole is fastened to the second threaded hole by a second bolt. A second shock absorbing assembly is arranged on the motor shaft, and the second shock absorbing assembly is connected to the gear box. The second shock absorbing assembly can reduce the vibration transmitted to the gear box by the motor, thereby protecting the gear box.

[0013] Preferably, the number of the first threaded holes is four, the cross section of the end of the transmission shaft is square, and the four first threaded holes are correspondingly arranged on the four side surfaces of the end of the transmission shaft.

[0014] Preferably, fastening bolts are provided on the sides of the shaft sleeves, one of the shaft sleeves is connected to the motor shaft, and the other shaft sleeve is connected to the external transmission shaft.

[0015] Therefore, the utility model has the beneficial effects of stable structure, good shock absorption effect and effectively improving the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 for Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 for Figure 1 Axonometric drawing of .

[0018] Figure 3 for Figure 1 Section view at AA in the middle.

[0019] Figure 4This is an exploded view of the first shock absorbing component.

[0020] Figure 5 It is a schematic structural diagram of the second shock absorbing assembly.

[0021] Figure 6 for Figure 5 A partial exploded view of the .

[0022] In the figure: a motor base 10, a connecting hole 11, and a motor 12;

[0023] The first shock absorbing assembly 20, the connecting plate 200, the annular groove 2000, the mounting hole 2001, the connecting column 201, the nut 202, the supporting member 203, the limiting convex ring 2030, the shock absorbing sleeve 204, the compression spring 205, and the flexible protective sleeve 206;

[0024] The second shock absorbing assembly 30 , the transmission shaft 300 , the bushing 301 , the connecting plate 302 , the first threaded hole 303 , the second threaded hole 304 , the connecting piece 305 , the through hole 306 , the first bolt 307 , the second bolt 308 , and the fastening bolt 3010 . DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the scope of protection of the present invention.

[0026] It should be understood that, in this document, the expressions "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance, nor should they be understood as implicitly indicating the number of technical features indicated. Features defined as "first" or "second" may explicitly or implicitly indicate that at least one of the features is included.

[0027] like Figure 1-Figure 4 A motor damping mechanism of a wind power generation experimental device includes a first damping assembly 20 arranged on a motor base 10; the first damping assembly 20 includes a connecting plate 200, a plurality of connecting columns 201 fixed on the connecting plate 200, a plurality of mounting holes 2001 for connecting to a platform are provided on the connecting plate, the upper ends of the connecting columns 201 pass through the connecting holes 11 of the motor base 10 and are locked by nuts 202, a support member 203 is slidably provided on the connecting column 201 at the lower side of the motor base 10, a damping sleeve 204 is sleeved on the portion of the connecting column 201 between the support member and the connecting plate, a compression spring 205 is sleeved on the outer side of the damping sleeve, and a flexible protective sleeve 206 sleeved on the outer side of the compression spring is provided between the support member 203 and the connecting plate 200.

[0028] In this embodiment, the shock-absorbing sleeve 204 is configured as a nylon sleeve, and the flexible protective sleeve 206 is made of rubber or silicone; the support member is annular in structure, and the connecting column 201 passes through the support member 203; the lower side of the support member 203 is provided with a limiting convex ring 2030, and the top surface of the connecting plate 200 is provided with an annular groove 2000 coaxially distributed with the connecting column, the lower end of the compression spring abuts against the bottom surface of the annular groove, and the upper end of the compression spring is located on the inner side of the limiting convex ring and abuts against the bottom surface of the support member.

[0029] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, it also includes a second damping assembly 30 arranged on the motor shaft; the second damping assembly 30 includes a transmission shaft 300 and two sleeves 301, and a connecting plate 302 is provided at one end of the sleeve facing the transmission shaft, and a plurality of first threaded holes 303 are evenly distributed along the circumferential direction on both ends of the transmission shaft 300, and a second threaded hole 304 corresponding to the first threaded hole is provided on the end surface of the connecting plate 302, and the axis of the first threaded hole is perpendicular to the axis of the second threaded hole; a connecting piece 305 is provided between the first threaded hole and the second threaded hole, and through holes 306 with mutually perpendicular axes are provided at both ends of the connecting piece, one of the through holes is fastened to the first threaded hole by a first bolt 307, and the other through hole is fastened to the second threaded hole by a second bolt 308. A fastening bolt 3010 is provided on the side of the sleeve 301, and one of the sleeves is connected to the motor shaft, and the other sleeve is connected to an external transmission shaft (such as the input shaft of the reducer).

[0030] In this embodiment, there are four first threaded holes 303, the cross section of the end of the transmission shaft 300 is square, and the four first threaded holes are correspondingly arranged on the four sides of the end of the transmission shaft. The second shock-absorbing component is a flexible mechanical connection that can stably transmit the motor torque. At the same time, the gap between the first bolt, the second bolt and the through hole on the connecting member is used to adapt to the slight displacement caused by the vibration, thereby greatly reducing the transmission of the motor vibration to the reducer and improving the stability of the reducer.

[0031] Combined with the accompanying drawings, the principle of the utility model is as follows: the first shock absorbing assembly 20 and the second shock absorbing assembly 30 are arranged according to Figure 2 The state shown is installed on the motor 12, the motor 40 is installed on the platform through the connecting plate, and a shaft sleeve of the second shock absorbing assembly is connected to the input shaft of the reducer; the shock absorbing sleeve and the compression spring in the first shock absorbing assembly reduce the interference of the platform vibration on the motor, and the second shock absorbing assembly can reduce the motor vibration transmitted to the reducer, so that the overall operation is more stable and the service life is longer.

[0032] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by up, down, left, right, inner end, outer end, one end, the other end, etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of more clearly describing the technical solution of the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific orientation, and cannot be understood as a limitation of the present invention.

[0033] Although specific embodiments of the present invention are described in detail herein, they are provided for the purpose of explanation only and should not be considered to limit the scope of the present invention. Various substitutions, changes and modifications may be conceived without departing from the spirit and scope of the present invention.

Claims

1. A motor damping mechanism for a wind power generation experimental device, characterized in that: It includes a first shock absorbing assembly arranged on a motor base; The first shock-absorbing assembly includes a connecting plate and a plurality of connecting columns fixed on the connecting plate, the upper ends of the connecting columns pass through the connecting holes of the motor base and are locked by nuts, a support member is slidably provided on the connecting column at the lower side of the motor base, a shock-absorbing sleeve is sleeved on the portion of the connecting column located between the support member and the connecting plate, and a compression spring is sleeved on the outer side of the shock-absorbing sleeve.

2. The motor damping mechanism of the wind power generation experimental device according to claim 1 is characterized in that: The shock-absorbing sleeve is configured as a nylon sleeve, the support member is an annular structure, and the connecting column passes through the support member; The lower side of the support member is provided with a limiting convex ring, and the top surface of the connecting plate is provided with an annular groove coaxially distributed with the connecting column. The lower end of the compression spring abuts against the bottom surface of the annular groove, and the upper end of the compression spring is located on the inner side of the limiting convex ring and abuts against the bottom surface of the support member.

3. The motor damping mechanism of a wind power generation experimental device according to claim 1 is characterized in that: A flexible protective sleeve is provided between the support member and the connecting plate and is sleeved on the outside of the compression spring.

4. The motor damping mechanism of the wind power generation experimental device according to claim 1 is characterized in that: The connecting plate is provided with a plurality of mounting holes for connecting with the platform.

5. The motor damping mechanism of a wind power generation experimental device according to claim 1, 2, 3 or 4, characterized in that: Also includes a second shock absorbing assembly disposed on the motor shaft; The second shock absorbing assembly comprises a transmission shaft and two sleeves, wherein the sleeve is provided with a connecting plate at one end facing the transmission shaft, and the side surfaces at both ends of the transmission shaft are provided with a plurality of first threaded holes evenly distributed along the circumferential direction, and the end surface of the connecting plate is provided with a second threaded hole corresponding to the first threaded hole, and the axis of the first threaded hole is vertically distributed with the axis of the second threaded hole; A connecting piece is provided between the first threaded hole and the second threaded hole, and through holes with axes perpendicular to each other are provided at both ends of the connecting piece, one of the through holes is fastened to the first threaded hole by a first bolt, and the other through hole is fastened to the second threaded hole by a second bolt.

6. The motor damping mechanism of the wind power generation experimental device according to claim 5 is characterized in that: There are four first threaded holes, the cross section of the end of the transmission shaft is square, and the four first threaded holes are correspondingly arranged on the four side surfaces of the end of the transmission shaft.

7. The motor damping mechanism of the wind power generation experimental device according to claim 6 is characterized in that: The side surfaces of the shaft sleeves are provided with fastening bolts, one of the shaft sleeves is connected to the motor shaft, and the other shaft sleeve is connected to the external transmission shaft.

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