CN107355508B - Vibration reduction support and motor adopting same - Google Patents
Vibration reduction support and motor adopting same Download PDFInfo
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- CN107355508B CN107355508B CN201710798788.9A CN201710798788A CN107355508B CN 107355508 B CN107355508 B CN 107355508B CN 201710798788 A CN201710798788 A CN 201710798788A CN 107355508 B CN107355508 B CN 107355508B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/0208—Alloys
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Abstract
The invention discloses a vibration reduction support and a motor adopting the vibration reduction support, and belongs to the technical field of motors. The invention relates to a vibration damping bracket, which comprises a plurality of vibration damping plates, wherein the side parts of the vibration damping plates are connected through a supporting plate, a plurality of vibration damping grooves for damping are formed in the side parts of the vibration damping plates, and the vibration damping grooves are positioned below the supporting plate; the motor comprises the vibration reduction support, a stator and a machine base for assembling the stator, wherein a plurality of vibration reduction supports are assembled on two sides of the machine base, and the stator is assembled on the vibration reduction support. The vibration reduction support and the motor adopting the vibration reduction support are simple in structure, stable, reliable, high in practicality, easy to manufacture and convenient to popularize and apply, and can effectively reduce and nearly eliminate the vibration of the motor while ensuring the required rigidity requirement of the motor and the position accuracy of the motor.
Description
Technical Field
The invention relates to a vibration reduction bracket and a motor adopting the vibration reduction bracket, and belongs to the technical field of motors.
Background
In recent years, high rotation speed becomes the development direction of the motor, and is mostly used for direct connection driving of high-speed loads such as a compressor, a water pump and the like, along with continuous rising of the rotation speed of the motor, the vibration problem caused by the continuous rising of the rotation speed of the motor is increasingly prominent, and in order to eliminate motor vibration, an elastic vibration isolation measure is adopted between a stator and a machine base, so that the vibration index of the motor can be effectively improved.
To solve the above problems, a solution is proposed in the patent (publication No. CN102044929a, application No. 200910174853.6) for positioning and mounting a motor stator core and a housing, and the patent uses a bent steel plate bent to form an angle of 55 ° to connect the stator and the housing, so as to effectively reduce vibration of the motor. However, after the accumulation of the sun and the moon, the included angle of the bending steel plate under the action of the gravity of the motor, the reaction force of the rotor and the vibration of the motor is gradually reduced, so that the motor is caused to collapse, the position accuracy of the motor assembled on the bending steel plate cannot meet the design requirement, and the transmission effect of the motor is affected.
Disclosure of Invention
The invention aims at: aiming at the problems, the invention provides the vibration reduction bracket and the motor adopting the vibration reduction bracket, which can ensure the rigidity requirement required by the motor, ensure the position accuracy of the motor and effectively reduce and nearly eliminate the vibration of the motor.
The technical scheme adopted by the invention is as follows:
the vibration reduction support comprises a plurality of vibration reduction plates, wherein the side parts of the vibration reduction plates are connected through support plates, a plurality of vibration reduction grooves used for vibration reduction are formed in the side parts of the vibration reduction plates, and the vibration reduction grooves are located below the support plates.
When the motor works, namely, when the rotor of the motor rotates, the motor inevitably vibrates, the transmission effect of the motor can be influenced in the vibration process, the service life of the motor is reduced, and the position accuracy of the motor is influenced, so that the vibration effect needs to be avoided as much as possible, and the vibration of the motor is guaranteed to be reduced to the greatest extent while the position accuracy of the motor is guaranteed. When the motor adopts the vibration damping bracket, the stator of the motor is assembled on the motor base through a plurality of vibration damping brackets, and the technical problem can be solved due to the design of the vibration damping bracket. The integral design of the vibration reduction plate and the supporting plate can ensure the rigidity requirement required by the motor and the position accuracy of the motor; the vibration reduction device has the advantages that due to the design of the plurality of vibration reduction grooves, the force generated by the vibration of the motor can be effectively absorbed, the vibration reduction effect is achieved, and the vibration of the motor can be effectively reduced and nearly eliminated. If the vibration reduction bracket is not adopted, but the bending steel plate is adopted to replace the vibration reduction bracket, the vibration of the motor can be effectively reduced, but due to the structural characteristics of the bending steel plate, after the accumulation of the sun and the moon, the included angle of the bending steel plate under the action of the gravity of the motor, the reaction force of the rotor and the vibration of the motor is gradually reduced, so that the motor is caused to collapse, the position precision of the motor assembled on the bending steel plate can not meet the design requirement, the transmission effect of the motor is influenced, and meanwhile, the rigidity of the bending steel plate is not as good as that of the vibration reduction bracket. Therefore, when the motor adopts the design of the vibration reduction bracket, the motor vibration can be effectively reduced and nearly eliminated while the required rigidity requirement of the motor and the position accuracy of the motor are ensured.
Preferably, the number of the vibration reduction plates is 2, and the vibration reduction grooves and the supporting plates are positioned on the same side of the vibration reduction plates, namely, the vibration reduction grooves and the supporting plates are positioned on the same side and below the supporting plates.
According to the vibration reduction support, the bottom end of the side part of the support plate is provided with the boss, and the boss faces away from the side part of the vibration reduction plate. When the stator is assembled on the vibration reduction bracket, the mounting end of the stator is assembled on the boss due to the design of the boss, and then the supporting plate is fixedly connected with the mounting end of the stator, so that the stator can be firmly and reliably assembled on the vibration reduction bracket. Preferably, the support plate and the boss are of an integral structure.
According to the vibration reduction support, the side part of the vibration reduction plate is provided with the groove, and the support plate is inlaid in the groove. The design of the groove enables the bearing force of the supporting plate to be transferred to the vibration reduction plate from the vertical direction. If the design of the groove is not adopted, the supporting plate is directly assembled on the outer surface of the side part of the vibration reduction plate, at the moment, the force transmitted by the supporting plate to the vibration reduction plate is a shearing force, the effect of transmitting the force by the design of the direct assembly structure is poor, the direct assembly structure is easy to fail, and the direct assembly structure is obviously inferior to the groove assembly structure in stability and reliability.
Further, the support plate protrudes out of or is flush with the side wall of the vibration reduction plate above the groove. That is, the support plate protrudes from the side wall of the vibration damping plate above the groove; or the support plate is flush with the damper plate side wall above the recess. The design aims to avoid interference phenomenon during assembly between the stator and the vibration reduction bracket.
Further, the side wall of the vibration reduction plate below the groove protrudes out of the support plate. I.e. the support plate is recessed below the damper plate side wall of the recess.
Further, the bottom end of the side part of the supporting plate is provided with a boss, and the boss protrudes out of or is flush with the side wall of the vibration reduction plate below the groove. Namely, the boss protrudes out of the side wall of the vibration reduction plate below the groove; or the boss is flush with the side wall of the damper plate below the recess. The design aims to avoid interference phenomenon during assembly between the stator and the vibration reduction bracket.
According to the vibration damping bracket, the depth D of the vibration damping groove is equal to 1/4-1/2 of the width B of the vibration damping plate at the position where the vibration damping groove is formed. Specifically, the positions of the vibration reduction grooves are different, so that the width B of the vibration reduction plate at each vibration reduction groove can be different, and the depth D of each vibration reduction groove is preferably equal to 1/4-1/2 of the minimum width B of the vibration reduction plate at the vibration reduction groove. If the depth D of the vibration reduction groove is too small, the vibration reduction effect is reduced; if the damping groove depth D is excessively large, the rigidity of the damping plate is lowered.
Further, the height H of the vibration reduction groove is equal to 1/3-1/2 of the depth D of the vibration reduction groove.
The invention relates to a vibration damping bracket, which is characterized in that the junction of the inner wall of a vibration damping groove and the top wall of the vibration damping groove is in smooth transition, and the junction of the inner wall of the vibration damping groove and the bottom wall of the vibration damping groove is in smooth transition. The design aims to avoid the phenomenon of cracking caused by stress concentration due to over sharp junctions. Preferably, the junction of the side wall of the support plate and the top wall of the vibration reduction groove is in smooth transition, and the junction of the side wall of the support plate and the bottom wall of the vibration reduction groove is in smooth transition.
According to the vibration reduction bracket disclosed by the invention, the bottoms of all vibration reduction plates are connected through the fixing plates. Further increasing the rigidity of the vibration reduction bracket and facilitating the mounting of the vibration reduction bracket to the housing.
Specifically, the vibration damping plate, the supporting plate and the fixing plate of the vibration damping bracket are connected in a welding mode to form an integral structure. The vibration damping bracket is made of Q235 steel, namely the vibration damping plate, the supporting plate and the fixing plate are made of Q235 materials, and of course, other steel with higher yield strength can be adopted. Preferably, the vibration reduction bracket is made of Q235 steel, so that the material cost is low and the weldability is good. If the bending steel plate is adopted to replace the vibration reduction bracket, the bending steel plate needs to have higher yield strength, higher toughness and higher bending resistance, so that the requirement of the bending steel plate on raw materials is improved, and the cost of the materials is increased.
The motor comprises the vibration reduction support, a stator and a machine base for assembling the stator, wherein a plurality of vibration reduction supports are assembled on two sides of the machine base, and the stator is assembled on the vibration reduction support. At this time, the vibration reduction grooves between the vibration reduction brackets at the two sides are opposite to each other for vibration reduction. Specifically, the bottom end of the vibration reduction plate is fixed on the machine base, so that the vibration reduction brackets are assembled on two sides of the machine base; the stator is fixed on the backup pad, realizes assembling the stator on a plurality of damping supports.
Furthermore, connecting plates with the same number as the vibration reduction brackets are arranged on two sides of the stator, and the connecting plates are fixedly connected with the supporting plates through fasteners so as to realize the assembly of the stator on the vibration reduction brackets. Preferably, under the design that combines together with the boss, the connecting plate is installed on the boss, and backup pad and connecting plate pass through fastener fastening connection, firm reliable.
Furthermore, under the design that combines together with the fixed plate, fasten the fixed plate on the frame through the fastener, realize the assembly of damping support on the frame.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
the vibration reduction bracket and the motor adopting the vibration reduction bracket have the advantages of simple structure, stability, reliability, strong practicality, easy manufacture and convenient popularization and application, and can effectively reduce and nearly eliminate the vibration of the motor while ensuring the required rigidity requirement of the motor and the position precision of the motor. The vibration damping support of the invention is particularly suitable for large high-speed motors, but is of course also suitable for other types of motors.
Drawings
The invention will now be described by way of example and with reference to the accompanying drawings in which:
FIG. 1 is a schematic perspective view of a vibration damping mount;
FIG. 2 is another schematic view of FIG. 1;
FIG. 3 is a side view of a vibration dampening bracket;
FIG. 4 is a schematic structural view of a vibration damping plate;
FIG. 5 is a schematic diagram of an assembly of an electric motor employing a vibration reduction mount;
fig. 6 is a schematic diagram of the distribution of the vibration damping mount of the motor.
The marks in the figure: 1-vibration damping plate, 11-vibration damping groove, 12-groove, 2-supporting plate, 21-boss, 3-fixed plate, 4-stator, 5-base, 6-connecting plate, B-vibration damping plate width of vibration damping groove, D-vibration damping groove depth, H-vibration damping groove height, L1-groove top wall depth, L2-supporting plate thickness, L3-supporting plate combined boss thickness, L4-groove bottom wall depth.
Detailed Description
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification may be replaced by alternative features serving the same or equivalent purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Example 1:
as shown in fig. 1 to 6, a vibration damping bracket of the present embodiment includes a plurality of vibration damping plates 1, the side portions of each vibration damping plate 1 are connected by a support plate 2, a plurality of vibration damping grooves 11 for vibration damping are formed in the side portions of the vibration damping plates 1, and the vibration damping grooves 11 are located below the support plate 2.
When the motor works, namely, when the rotor of the motor rotates, the motor inevitably vibrates, the transmission effect of the motor can be influenced in the vibration process, the service life of the motor is reduced, and the position accuracy of the motor is influenced, so that the vibration effect needs to be avoided as much as possible, and the vibration of the motor is guaranteed to be reduced to the greatest extent while the position accuracy of the motor is guaranteed. When the vibration damping bracket is adopted by the motor, the stator 4 of the motor is assembled on the stand 5 of the motor through a plurality of vibration damping brackets, and the technical problem can be solved due to the design of the vibration damping bracket. The integral design of the vibration reduction plate 1 and the support plate 2 can ensure the rigidity requirement required by the motor and the position accuracy of the motor; by virtue of the design of the plurality of vibration reduction grooves 11, the vibration reduction grooves can effectively absorb the force generated by the vibration of the motor and play a role in vibration reduction, so that the vibration of the motor can be effectively reduced and nearly eliminated. If the vibration reduction bracket is not adopted, but the bending steel plate is adopted to replace the vibration reduction bracket, the vibration of the motor can be effectively reduced, but due to the structural characteristics of the bending steel plate, after the accumulation of the sun and the moon, the included angle of the bending steel plate under the action of the gravity of the motor, the reaction force of the rotor and the vibration of the motor is gradually reduced, so that the motor is caused to collapse, the position precision of the motor assembled on the bending steel plate can not meet the design requirement, the transmission effect of the motor is influenced, and meanwhile, the rigidity of the bending steel plate is not as good as that of the vibration reduction bracket. Therefore, when the motor adopts the design of the vibration reduction bracket, the motor vibration can be effectively reduced and nearly eliminated while the required rigidity requirement of the motor and the position accuracy of the motor are ensured.
Specifically, in one embodiment, as shown in fig. 1 to 3, the number of vibration damping plates 1 is 2, but may be 3, 4 or more; the number of the vibration damping grooves 11 of each vibration damping plate 1 is 3, but can be 2, 4 or more; the vibration damping groove 11 is located on the same side of the vibration damping plate 1 as the support plate 2, i.e. the vibration damping groove 11 is located on the same side of the support plate 2 and below the support plate 2. Specifically, the upper section of the vibration damping plate 1 is in a right trapezoid structure, the lower section of the vibration damping plate is in a rectangular structure, the right angle surface of the right trapezoid structure and the side surface of the rectangular structure are in the same vertical plane, and the supporting plate 2 and the vibration damping groove 11 are arranged on the side of the vertical plane. The width of the top surface of the right trapezoid structure is smaller than that of the bottom surface of the right trapezoid structure, the width of the top surface of the rectangular structure is smaller than or equal to that of the bottom surface of the right trapezoid structure, and the bottom surface of the right trapezoid structure and the top surface of the rectangular structure are combined and fused into a whole to form the vibration reduction plate 1. When the motor adopts the vibration damping bracket, the inclined plane of the right trapezoid structure is tangent or approximately tangent to the outer surface of the stator 4, as shown in fig. 6, so that the direction of the reaction force applied to the stator 4 by the rotor in the rotating process is matched with the inclined plane structure, the force can be better transmitted to the vibration damping bracket, and then transmitted to the machine base 5, the motor is more stable and reliable, and the vibration damping bracket is more compact and attractive. Of course, the vibration damping plate 1 can also be directly in a right trapezoid structure or a rectangular structure.
Based on a further optimization of this embodiment, in another embodiment, as shown in fig. 1 to 3, the bottom end of the side portion of the support plate 2 is provided with a boss 21, and the boss 21 faces away from the side portion of the vibration damping plate 1. When the stator 4 is assembled on the vibration damping bracket of the present invention, the mounting end of the stator 4 is assembled on the boss 21 thanks to the design of the boss 21, and then the support plate 2 is fastened and connected with the mounting end of the stator 4, so that the stator 4 can be firmly and reliably assembled on the vibration damping bracket. Preferably, the support plate 2 and the boss 21 are integrally formed and have an L-shaped structure.
Based on the further optimization of this embodiment, in another embodiment, as shown in fig. 1 to 4, a groove 12 is formed on the side portion of the vibration damping plate 1, and the support plate 2 is embedded in the groove 12. The design of the recess 12 allows the bearing forces of the support plate 2 to be transferred from the vertical direction to the damping plate 1. If the design of the groove 12 is not adopted, the supporting plate 2 is directly assembled on the outer surface of the side part of the vibration damping plate 1, and the force transmitted by the supporting plate 2 to the vibration damping plate 1 is a shearing force, the effect of transmitting the force by the design of the direct assembly structure is poor, the direct assembly structure is easy to fail, and the assembly structure is obviously inferior to the stability and reliability of the groove 12 assembly structure.
Further, in another embodiment, as shown in fig. 3, the supporting plate 2 protrudes from or is flush with the side wall of the vibration damping plate 1 above the recess 12. That is, the support plate 2 protrudes from the side wall of the vibration damping plate 1 above the groove 12; or the support plate 2 is flush with the side wall of the damping plate 1 above the recess 12. The purpose of this design is to avoid interference between the stator 4 and the vibration damping mount during assembly. For ease of understanding, the depth of the top wall of the recess 12 is L1, and the thickness of the support plate 2 is L2, with L2 being greater than or equal to L1, as will be described with reference to FIG. 3.
Further, in another embodiment, the side wall of the damping plate 1 below the groove 12 protrudes from the supporting plate 2. I.e. the support plate 2 is recessed below the recess 12 in the side wall of the damping plate 1. For ease of understanding, the depth of the bottom wall of the recess 12 is L4, and the thickness of the support plate 2 is L2, L4 > L2, as will be described below with reference to FIG. 3.
Further, in another embodiment, as shown in fig. 3, the bottom end of the side portion of the supporting plate 2 is provided with a boss 21, and the boss 21 protrudes from or is flush with the side wall of the damping plate 1 below the groove 12. That is, the boss 21 protrudes from the side wall of the vibration damping plate 1 below the groove 12; or the boss 21 is flush with the side wall of the damper plate 1 below the recess 12. The purpose of this design is to avoid interference between the stator 4 and the vibration damping mount during assembly. For the sake of understanding, as will be described later with reference to FIG. 3, the thickness of the support plate 2 at the junction with the boss 21 is L3, and the depth of the bottom wall of the recess 12 is L4, L3. Gtoreq.L 4.
Based on the above-mentioned combination design of technical features of the embodiments, in one embodiment, as shown in fig. 3, the supporting plate 2 protrudes from or is flush with the side wall of the vibration damping plate 1 above the groove 12 (i.e., L2 is greater than or equal to L1), the boss 21 protrudes from or is flush with the side wall of the vibration damping plate 1 below the groove 12 (i.e., L3 is greater than or equal to L4), and the side wall of the vibration damping plate 1 below the groove 12 protrudes from the supporting plate 2 (i.e., L4 is greater than L2). Obviously, L4 > L1. The design ensures that the bearing force of the boss 21 can be transmitted to the vibration damping plate 1 from the vertical direction; if the supporting plate 2 protrudes out of or is flush with the side wall of the vibration reduction plate 1 below the groove 12 (namely, L2 is more than or equal to L4), the boss 21 is in a suspended state and is subjected to the action of shearing force, the force is unreliable in transmission action, and the boss 21 is easy to deform or even crack, so that the stability of the vibration reduction bracket is influenced; but such a design is also within the scope of the invention.
Based on a further optimization of this embodiment, in another embodiment, as shown in fig. 3, the depth D of the vibration damping groove 11 is equal to 1/4-1/2 of the width B of the vibration damping plate (1) where the vibration damping groove 11 is opened. That is, d=1/4B or d=1/2B, or any of d=1/4B to 1/2B. Specifically, the positions of the vibration damping grooves 11 are different, so that the width B of the vibration damping plate 1 at each position where the vibration damping groove 11 is formed may be different, and preferably, the depth D of each vibration damping groove 11 is equal to 1/4-1/2 of the minimum width B of the vibration damping plate 1 at each position where the vibration damping groove 11 is formed. If the depth D of the vibration reduction groove 11 is too small, the vibration reduction effect is reduced; if the depth D of the vibration damping groove 11 is excessively large, the rigidity of the vibration damping plate 1 is lowered.
Further, in another embodiment, as shown in FIG. 3, the height H of the vibration reduction groove 11 is equal to 1/3-1/2 of the depth D of the vibration reduction groove 11. That is, as preferable, h=1/3D or h=1/2D, or d=1/3D to 1/2D. Of course, the height H of the vibration damping groove 11 may be a value other than 1/3D or h=1/2D.
Based on a further optimization of this embodiment, in another embodiment, as shown in fig. 1 to 4, the junction between the inner wall of the vibration reduction groove 11 and the top wall of the vibration reduction groove 11 is smoothly transited, and the junction between the inner wall of the vibration reduction groove 11 and the bottom wall of the vibration reduction groove 11 is smoothly transited. The design aims to avoid the phenomenon of cracking caused by stress concentration due to over sharp junctions. Preferably, the junction of the side wall of the support plate 2 and the top wall of the vibration reduction groove 11 is smoothly transited, and the junction of the side wall of the support plate 2 and the bottom wall of the vibration reduction groove 11 is smoothly transited. Specifically, the above-mentioned junction is rounded.
Based on a further optimization of this embodiment, in another embodiment, as shown in fig. 1 to 3, the bottom of each vibration damping plate 1 is connected by a fixing plate 3. Further increasing the stiffness of the vibration damping mount and facilitating the mounting of the vibration damping mount to the housing 5. When the number of the vibration reduction plates 1 is 2, the fixed plates 3 are directly welded between the two vibration reduction plates 1; or the bottoms of the two vibration reduction plates 1 are provided with mounting grooves, and the fixed plate 3 is embedded in the two mounting grooves and welded with the fixed plate 3; when the number of the damper plates 1 is 2 or more, the principle is the same. Specifically, a plurality of round holes for the fasteners to pass through are formed in the supporting plate 2 and the fixing plate 3. Further, the bottom surface of the vibration reduction plate 1 is flush with the bottom surface of the fixed plate 3, or the bottom surface of the vibration reduction plate 1 is slightly higher than the bottom surface of the fixed plate 3, or the fixed plate 3 is positioned on the bottom surface of the vibration reduction plate 1.
Specifically, in one embodiment, the vibration damping plate 1, the support plate 2 and the fixing plate 3 of the vibration damping bracket are connected by welding to form an integral structure. The vibration damping bracket is made of Q235 steel, namely the vibration damping plate 1, the supporting plate 2 and the fixing plate 3 are made of Q235 material, and of course, other steel with higher yield strength can be adopted. Preferably, the vibration reduction bracket is made of Q235 steel, so that the material cost is low and the weldability is good. If the bending steel plate is adopted to replace the vibration reduction bracket, the bending steel plate needs to have higher yield strength, higher toughness and higher bending resistance, so that the requirement of the bending steel plate on raw materials is improved, and the cost of the materials is increased.
Example 2:
as shown in fig. 5 and 6, an electric motor of the present embodiment includes a vibration damping bracket of embodiment 1, a stator 4 and a housing 5 for mounting the stator, a plurality of the vibration damping brackets are mounted on both sides of the housing 5, and the stator 4 is mounted on the vibration damping bracket. At this time, the vibration damping grooves 11 between the vibration damping brackets on both sides are opposite to each other for vibration damping. Specifically, the bottom end of the vibration reduction plate 1 is fixed on the machine base 5, so that vibration reduction brackets are assembled on two sides of the machine base 5; the stator 4 is fixed on the support plate 2, so that the stator 4 is assembled on a plurality of vibration reduction brackets. In one embodiment, the number of the vibration reduction brackets is 4, and the vibration reduction brackets are symmetrically distributed on two sides of the machine base 5; of course, the number of the vibration damping supports can be 6, 8 or more.
Further, in another embodiment, as shown in fig. 5 and 6, the two sides of the stator 4 are provided with connecting plates 6 with the same number as the vibration reduction brackets, and the connecting plates 6 are fastened and connected with the supporting plate 2 through fasteners, so as to realize the assembly of the stator 4 on the vibration reduction brackets. Preferably, under the design that combines together with boss 21, connecting plate 6 installs on boss 21, and backup pad 2 and connecting plate 6 pass through the fastener fastening and connect, firm reliable. Specifically, the fastener is a bolt, and preferably, the fastener is a high-strength bolt.
Further, in another embodiment, as shown in fig. 5 and 6, the fixing plate 3 is fastened to the base 5 by a fastener under the design of combining with the fixing plate 3, so that the vibration reduction bracket is assembled to the base 5. Specifically, the fastener is a bolt, and preferably, the fastener is a high-strength bolt.
Based on the combined design of the technical features of the above embodiments, in one embodiment, as shown in fig. 1 to 6, the number of vibration reduction brackets is 4, and the vibration reduction brackets are symmetrically distributed on two sides of the stand 5; wherein, the wall thickness of the vibration damping plate 1 is 40mm, the height of the vibration damping plate 1 is 710mm, the width of the bottom surface of the right trapezoid structure of the vibration damping plate 1 is 250mm, and the width b=210 mm of the top surface of the rectangular structure of the vibration damping plate 1 (the width of the rectangular structure in this embodiment is the minimum width of the vibration damping plate 1 where the vibration damping groove 11 is formed); the number of the vibration reduction grooves 11 is 3, the distance between the vibration reduction grooves 11 is 110mm, the depth D of the vibration reduction grooves 11 is=55 mm, and the height H of the vibration reduction grooves 11 is=20 mm; the depth of the top wall of the groove 12 is L1=41 mm, the thickness of the supporting plate 2 is L2=49 mm, the thickness of the combining boss 21 of the supporting plate 2 is L3=65 mm, the depth of the bottom wall of the groove 12 is L4=57 mm, and the bottom surface of the vibration damping plate 1 is 5mm higher than the bottom surface of the fixed plate 3.
In summary, the vibration reduction bracket and the motor using the vibration reduction bracket have the advantages of simple structure, stability, reliability, strong practicability, easy manufacture and convenient popularization and application, and can effectively reduce and nearly eliminate the vibration of the motor while ensuring the required rigidity requirement of the motor and the position precision of the motor. The vibration damping support of the invention is particularly suitable for large high-speed motors, but is of course also suitable for other types of motors.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (4)
1. A vibration reduction bracket, characterized in that: the vibration reduction device comprises a plurality of vibration reduction plates (1), wherein the side parts of the vibration reduction plates (1) are connected through a support plate (2), a plurality of vibration reduction grooves (11) for vibration reduction are formed in the side parts of the vibration reduction plates (1), and the vibration reduction grooves (11) are positioned below the support plate (2) and on the same side; a boss (21) is arranged at the bottom end of the side part of the supporting plate (2), and the boss (21) faces away from the side part of the vibration reduction plate (1); the side part of the vibration reduction plate (1) is provided with a groove (12), and the supporting plate (2) is inlaid in the groove (12); the supporting plate (2) protrudes out of or is flush with the side wall of the vibration reduction plate (1) above the groove (12); the side wall of the vibration reduction plate (1) below the groove (12) protrudes out of the support plate (2); a boss (21) is arranged at the bottom end of the side part of the supporting plate (2), and the boss (21) protrudes out of or is flush with the side wall of the vibration reduction plate (1) below the groove (12); the vibration reduction groove (11) is of a U-shaped structure, the depth D of the vibration reduction groove (11) is equal to 1/4-1/2 of the width B of the vibration reduction plate (1) at the position where the vibration reduction groove (11) is arranged, and the height H of the vibration reduction groove (11) is equal to 1/3-1/2 of the depth D of the vibration reduction groove (11).
2. A vibration-damping mount according to claim 1, wherein: the junction of the inner wall of the vibration reduction groove (11) and the top wall of the vibration reduction groove (11) is in smooth transition, and the junction of the inner wall of the vibration reduction groove (11) and the bottom wall of the vibration reduction groove (11) is in smooth transition.
3. A vibration-damping mount according to claim 1, wherein: the bottoms of the vibration reduction plates (1) are connected through a fixed plate (3).
4. An electric motor, characterized by: a vibration-damping mount as claimed in any one of claims 1 to 3, further comprising a stator (4) and a housing (5) for mounting the stator, a plurality of said vibration-damping mounts being mounted on both sides of the housing (5), said stator (4) being mounted on the vibration-damping mount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710798788.9A CN107355508B (en) | 2017-09-07 | 2017-09-07 | Vibration reduction support and motor adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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