CN210660763U - Vibration-proof pad of ventilator - Google Patents
Vibration-proof pad of ventilator Download PDFInfo
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- CN210660763U CN210660763U CN201921835161.7U CN201921835161U CN210660763U CN 210660763 U CN210660763 U CN 210660763U CN 201921835161 U CN201921835161 U CN 201921835161U CN 210660763 U CN210660763 U CN 210660763U
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Abstract
The utility model discloses a antivibration pad of ventilation blower, antivibration pad set up between the fan blade skeleton and the motor shaft sleeve of ventilation blower, and the appearance and the motor shaft sleeve of antivibration pad match for avoid fan blade skeleton and motor shaft sleeve direct contact. The fan blade vibration transmission can be effectively controlled to the motor and the motor support, the vibration level of the whole fan is reduced, and the service lives of the motor and the fan are prolonged.
Description
Technical Field
The utility model relates to a ventilation blower technical field especially relates to a antivibration pad of ventilation blower.
Background
When the motor of the ventilator operates, large vibration is generally generated, and the vibration is transmitted to the motor and the bracket through the fan blades. In the prior art, the fan blade framework is directly contacted with the shaft sleeve and is connected by using methods such as bolts, riveting, welding and the like, so that the ventilator can generate larger vibration and noise during working. Especially for a large ventilator with high motor power and high rotating speed, the electromagnetic vibration of the motor (caused by power supply harmonic waves and non-uniform motor magnetic field) can be overlapped with the natural frequency of the wind blade, so that excitation and amplification electromagnetic noise can be caused. The vibration and noise generated during the operation of the device can be larger, and the comfort of the user in using the product and the service life of the product are seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a antivibration pad, axle sleeve and fan blade, antivibration pad set up between fan blade skeleton and motor shaft sleeve, and the appearance and the motor shaft sleeve of antivibration pad match for avoid fan blade skeleton and motor shaft sleeve direct contact. The fan blade vibration transmission can be effectively controlled to the motor and the motor support, the vibration level of the whole fan is reduced, and the service lives of the motor and the fan are prolonged.
The utility model discloses a following technical scheme realizes:
a vibration-proof pad is arranged between a fan blade framework and a motor shaft sleeve of a ventilator, a motor shaft sleeve comprises a shaft sleeve column and a mounting disc, the shaft sleeve column is a hollow cylinder, one end of the shaft sleeve column horizontally extends in the circumferential direction, the axis of the shaft sleeve column is perpendicular to the plane of the mounting disc, and a plurality of mounting through holes are uniformly formed in the mounting disc; the appearance of antivibration pad matches with the motor shaft sleeve for avoid fan blade skeleton and motor shaft sleeve direct contact.
Further, the vibration-proof pad includes:
the gasket main body is matched with the mounting disc in shape and used for isolating the direct contact between the horizontal plane of the fan blade framework and the mounting disc;
the axis of the bulge ring is perpendicular to the plane of the gasket main body and is used for isolating the direct contact between the thickness direction of the fan blade framework and the shaft sleeve column;
the positioning pieces comprise positioning holes, transition sections and limiting pieces, the positioning holes are through holes uniformly arranged on the periphery of the gasket main body, and the number of the positioning holes is equal to that of the mounting through holes on the mounting disc; the transition section is an axial extension of one end of the positioning hole; the limiting piece is a horizontal bulge of the other end of the transition section in the circumferential direction.
Furthermore, the raised ring and the positioning piece are respectively positioned on two different surfaces of the gasket main body.
Further, the mounting disc is provided with the grooved surface, the grooved surface is arranged in the one side that is provided with the motor shaft sleeve in the mounting disc, and the degree of depth of grooved surface is 2~5mm, the external diameter of packing ring main part with the external diameter of grooved surface is the same, the thickness of packing ring main part is 3~10 mm.
Furthermore, the height of the protruding ring higher than the gasket main body is larger than the thickness of the fan blade framework, a groove surface is arranged on the surface of the shaft sleeve column, which is in contact with the protruding ring, and the protruding ring is embedded into the groove surface.
Further, the outer diameter of the transition section is the same as the inner diameter of the mounting through hole.
Furthermore, counter bores matched with the limiting pieces are arranged on the back faces of the mounting through holes in the mounting disc, and the limiting pieces are embedded into the counter bores.
Further, the anti-vibration pad further comprises a steel insert, the steel insert comprises a steel insert main body and a clamping piece, the steel insert main body is a hollow annular body, and the clamping piece is a protrusion of one end of the steel insert main body in the circumferential direction.
Furthermore, the steel insert is sleeved into the positioning hole from one side of the limiting sheet, and the outer diameter of the main body of the steel insert is the same as the inner diameter of the positioning hole.
Further, after the steel insert is sleeved into the positioning hole, the clamping piece is located in the plane of the limiting piece, and the clamping piece is 1-2 mm higher than the mounting disc.
The beneficial effects of the utility model reside in that:
the utility model discloses fan blade skeleton and axle sleeve when the installation, install the antivibration pad between fan blade skeleton and motor shaft sleeve, the size and the motor shaft sleeve matching of antivibration pad, make fan blade skeleton all not with axle sleeve direct contact at horizontal direction and thickness direction, the fan blade skeleton is fixed on the axle sleeve through the contact with the antivibration pad, therefore, the ventilation blower is at the operation in-process, can effective control fan blade vibration transmission give motor and motor support, reduce whole fan vibration level simultaneously, the noise reduction, increase motor and support life-span.
Drawings
Fig. 1 is a schematic view of an overall structure of an embodiment of the vibration-proof pad, the shaft sleeve and the fan blade of the present invention;
fig. 2 is a sectional view showing the installation of one embodiment of the vibration-proof pad, the shaft sleeve and the fan blade of the present invention;
fig. 3 is a front view of an embodiment of the anti-vibration pad of the present invention;
fig. 4 is a side view of an embodiment of the vibration-proof pad of the present invention;
fig. 5 is a schematic structural view of an embodiment of the motor shaft sleeve of the present invention;
fig. 6 is a schematic structural view of an embodiment of the steel insert of the present invention.
In the figure, 1, a motor shaft sleeve, 2, a fan blade framework, 3, a vibration-proof pad, 4, a steel insert, 5, a bolt, 11, a shaft sleeve column, 12, a mounting disc, 21, a fan blade, 31, a gasket main body, 32, a bulge ring, 33, a positioning piece, 41, a steel insert main body, 42, a clamping piece, 111, a shaft sleeve column groove surface, 121, a mounting through hole, 122, a mounting disc groove surface, 331, a positioning hole, 332, a transition section and 333 are limiting pieces.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting. In addition, it should be noted that, for convenience of description, only a part of the structure related to the present invention is shown in the drawings, not the whole structure.
Example 1
Referring to fig. 1-6, the utility model relates to a vibration-proof pad of ventilation blower, wherein motor shaft sleeve 1 includes shaft sleeve post 11 and mounting disc 12, and shaft sleeve post 11 is hollow cylinder, and its center is a through-hole that runs through for the installation fan blade, and the through-hole of shaft sleeve post 11 embolias on the motor shaft fixedly, the size and the appearance and the motor shaft phase-match of shaft sleeve post 11 center through-hole. The motor shaft sleeve structure is characterized in that a horizontal extension is arranged in the circumferential direction of one end of a shaft sleeve column 11 to form a mounting disc 12 of a motor shaft sleeve 1, the mounting disc 12 is preferably circular or in other shapes, the diameter of the mounting disc 12 is about 2-3 times of the diameter of the cross section of the shaft sleeve column 11, and a fan blade framework 2 is fixed on the motor shaft sleeve 1 through the mounting disc 12, so that the area of the mounting disc 12 is larger than the cross section of the shaft sleeve column 11 but smaller than the area of the fan blade framework 2. The central axis of axle sleeve post 11 is perpendicular with mounting disc 12 plane, evenly is provided with a plurality of mounting through-holes 121 on the mounting disc 12, and mounting through-holes 121 set up around the mounting disc, and preferred 4 of quantity also can be 3, 5 or 6, and the purpose makes firm stable the fixing on motor shaft sleeve 1 of fan blade skeleton 2.
On the motor bushing 1 is placed a vibration-proof pad 3, the vibration-proof pad 3 comprising a washer body 31, a raised ring 32 and a positioning member 33. The appearance of antivibration pad 3 and motor shaft sleeve 1 phase-match for avoid fan blade skeleton 2 and motor shaft sleeve 1 direct contact. Antivibration pad 3 is made by the damping rubber that damping coefficient is 0.1~1.0, this damping rubber has better elastic buffer characteristic and damping buffer characteristic, when the motor shaft rotates at a high speed, the vibrations that cause transmit antivibration pad 3 through motor shaft sleeve 1, the inside macromolecule chain segment of antivibration pad 3 can produce relative motion, thereby can produce a counter-force that makes the vibration attenuation, and turn into heat energy with the mechanical energy that the vibration produced, and further make the vibration can attenuate gradually when transmitting on antivibration pad 3, reach the damping vibration reduction purpose, on the other hand is based on the elastic buffer characteristic of antivibration pad 3, can further reduce the vibration gradually. Therefore, the vibration transmitted to the fan blade framework 2 can be greatly weakened; according to the vibration frequency characteristic of the motor of the ventilator, the damping coefficient of the anti-vibration pad 3 is set to be 0.1-1.0, and the damping and buffering effects of the anti-vibration pad 3 can be well guaranteed.
Further, the mounting disc 12 is provided with a groove surface 122, the groove surface 122 is located on the surface, provided with the motor shaft sleeve 1, of the mounting disc 12, the depth of the groove surface 122 is 2-5 mm, the outer diameter of the gasket main body 31 is the same as that of the groove surface 122, the outer diameter of the mounting disc 12 is 3-12 mm larger than that of the gasket main body 31, and the thickness of the gasket main body 31 is 3-10 mm. Because the external diameter of the gasket main body 31 is the same as that of the groove surface 122, the gasket main body 31 is embedded into the groove surface, and the groove surface has a depth of 2-5 mm, so that the gasket main body 31 can be effectively prevented from being displaced in the mounting disc 12 in the high-speed rotation process of the motor, and a positioning effect is achieved. Because the thickness of the gasket main body 31 is 3-10 mm, the depth of the groove surface 122 is 2-5 mm, and the gasket main body can be higher than the groove surface by 1-5 mm, when the fan blade framework 2 is installed, the contact between the fan blade framework 2 and the outer edge of the installation disc 12 can be effectively avoided, so that the fan blade framework 2 is directly contacted with the gasket main body 31, and the vibration-proof effect is achieved.
Further, the center of the gasket main body is provided with a raised ring 32, the raised ring 32 is a hollow annular body higher than the plane of the gasket main body 31, and the axis of the raised ring is perpendicular to the plane of the gasket main body 31 and is used for isolating the direct contact between the thickness direction of the fan blade framework and the shaft sleeve column 11. The inner surface of the raised ring 32 is tightly fitted with the sleeve post 11, and in order to firmly fix the raised ring 32 on the sleeve post 11, a groove surface 111 is arranged on the sleeve post, the height of the groove surface 111 in the axial direction is equal to the height of the raised ring 32, and the depth of the groove surface 111 is equal to the thickness of the raised ring 32 or slightly smaller than the thickness of the raised ring 32. The raised ring 32 is embedded in the groove face 111. In order to avoid direct contact between the fan blade framework 2 and the shaft sleeve column 11 in the thickness direction, the height of the bulge ring 32 higher than the gasket main body 31 is larger than the thickness of the fan blade framework 2.
Further, the anti-vibration pad 3 further comprises a positioning part 33, the positioning part 33 is used for fixing the anti-vibration pad 3 between the motor shaft sleeve 1 and the fan blade framework 2, the positioning part 33 comprises positioning holes 331, transition sections 332 and limiting pieces 333, the positioning holes 331 are through holes uniformly arranged around the gasket main body 31, the number of the through holes is equal to that of the installation through holes 121 on the installation disc 12, and the diameter of the positioning holes 331 is smaller than that of the installation through holes 121; the transition section 332 is an axial extension of one end of the positioning hole, and the limiting sheet 333 is a horizontal projection of the other end of the transition section in the circumferential direction. The back of the mounting through hole 121 on the mounting disc 12 is provided with a counter bore matched with the size of the limiting sheet 333, the depth of the counter bore is 2-3 mm, the limiting sheet 333 is embedded into the counter bore, and the thickness of the limiting sheet 333 is equal to the depth of the counter bore or slightly higher than the depth of the counter bore. Because the anti-vibration pad 3 has certain elasticity, the limiting sheet 333 is forcibly pressed into the mounting through hole 121, and the limiting sheet 333 passes through the mounting through hole 121 after bending deformation and is embedded into a counter bore at the back of the mounting through hole. The transition section 332 is located at an inner wall of the mounting through-hole 121, and an outer diameter of the transition section 332 is the same as an inner diameter of the mounting through-hole 121.
Preferably, the limiting sheet 333 is circular, the outer diameter of the limiting sheet 333 is larger than that of the transition section 332, and the anti-vibration pad 3 is clamped in the installation through hole 121 through the limiting sheet 333 and is not easy to slide out. The limiting piece 333 may have other shapes or any protrusion, and the anti-vibration pad 3 is only required to be clamped in the installation through hole 121.
The positioning piece 33 is made of damping rubber through integral forming, the center of the positioning piece 33 is a through hole with the same diameter everywhere, and a bolt penetrates through the through hole to fix the anti-vibration pad 3 between the fan blade framework 2 and the motor shaft sleeve 1. Because the raised ring 32 is used for isolating the contact between the thickness direction of the fan blade framework 2 and the motor shaft sleeve 1, the positioning piece 33 is used for fixing the anti-vibration pad 3 on the motor shaft sleeve 1, and the limiting piece 333 needs to pass through the installation through hole 121 of the motor shaft sleeve 1, the raised ring 32 and the positioning piece 33 are respectively positioned on two sides of the gasket main body 31 to form the whole anti-vibration pad 3.
Further, after the anti-vibration pad 3 is fastened and mounted on the motor shaft sleeve 1 by the bolt 5, in order to ensure that the damping rubber pad plays a role of a spacer, the anti-vibration pad 3 further comprises a steel insert 4, and the steel insert is made of a metal material with certain hardness, preferably steel, and can also be made of an alloy material. The steel insert 4 comprises a steel insert body 41 and a clamping piece 42, the steel insert body 41 is a hollow circular ring body, the inner diameter of the steel insert body 41 is slightly larger than the diameter of the bolt, and the height of the steel insert body 41 is equal to the length of the through hole of the positioning part 33 or slightly smaller than the length of the through hole of the positioning part. The card 42 is a projection of one end of the steel insert body 41 in the circumferential direction. The size of the clamping piece 42 is the same as or slightly smaller than that of the limiting sheet 333 of the anti-vibration pad 3, the outer diameter of the steel insert body 41 is the same as the inner diameter of the positioning hole 331, and the steel insert 4 is sleeved into the positioning hole 331 from one side of the limiting sheet 333 and is tightly connected with the positioning hole 331. After the steel insert 4 is sleeved into the positioning hole 331, the clamping piece 42 is located on the plane of the limiting piece 333, and the clamping piece 42 is 1-2 mm higher than the mounting disc.
Because the steel insert 4 has certain strength, the clamping sheet 42 of the steel insert 4 is in direct contact with the protruding end of the bolt 5, the inner wall of the steel insert main body 41 is in direct contact with the bolt rod, and the bolt 5 penetrates through the steel insert main body 41 and the fan blade framework 2 from one end of the steel insert clamping sheet 42 and is fixed by a nut.
When the anti-vibration pad is used, the limiting sheet 333 of the anti-vibration pad 3 is pressed into the mounting through hole 121 of the motor shaft sleeve 1 by force, and the limiting sheet 333 penetrates through the mounting through hole 121 and is embedded into a counter bore on the back of the mounting through hole 121. The washer body 31 is inserted into the groove face 122 of the mounting disk 12 and the raised ring 32 is inserted into the groove face 111 of the sleeve post 11. Then, the steel insert 4 is inserted into the positioning hole 331 from one side of the limiting sheet 333 and is tightly connected with the positioning hole 331. And then, a bolt 5 penetrates through the steel insert main body 41 and the fan blade framework 2 from one end of the steel insert card 42, and is fixed by a nut, and a fan blade 21 is installed on the fan blade framework 2, so that the installation structure of the anti-vibration pad, the shaft sleeve and the fan blade is completed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The vibration-proof pad of the ventilator is characterized in that the vibration-proof pad is arranged between a fan blade framework of the ventilator and a motor shaft sleeve, the motor shaft sleeve comprises a shaft sleeve column and a mounting disc, the shaft sleeve column is a hollow cylinder, the mounting disc is a horizontal extension of one end of the shaft sleeve column in the circumferential direction, the axis of the shaft sleeve column is vertical to the plane of the mounting disc, and a plurality of mounting through holes are uniformly formed in the mounting disc; the appearance of antivibration pad matches with the motor shaft sleeve for avoid fan blade skeleton and motor shaft sleeve direct contact.
2. Vibration-proof mat according to claim 1, characterized in that it comprises: the gasket main body is matched with the mounting disc in shape and used for isolating the direct contact between the horizontal plane of the fan blade framework and the mounting disc; the axis of the bulge ring is perpendicular to the plane of the gasket main body and is used for isolating the direct contact between the thickness direction of the fan blade framework and the shaft sleeve column; the positioning pieces comprise positioning holes, transition sections and limiting pieces, the positioning holes are through holes uniformly arranged on the periphery of the gasket main body, and the number of the positioning holes is equal to that of the mounting through holes on the mounting disc; the transition section is an axial extension of one end of the positioning hole; the limiting piece is a horizontal bulge of the other end of the transition section in the circumferential direction.
3. The cushion according to claim 2, wherein the protrusion ring and the positioning member are respectively provided on both surfaces of the gasket main body.
4. The vibration-proof pad according to claim 2, wherein the mounting plate is provided with a recessed surface at a side where the motor bushing is provided, the recessed surface has a depth of 2 to 5mm, the gasket main body has the same outer diameter as the recessed surface, and the gasket main body has a thickness of 3 to 10 mm.
5. The anti-vibration pad as claimed in claim 2, wherein the height of the raised ring above the gasket body is greater than the thickness of the fan blade frame, and the surface of the boss column contacting the raised ring is provided with a recessed surface into which the raised ring is embedded.
6. Vibration-proof mat according to claim 2, characterized in that the outer diameter of the transition section is the same as the inner diameter of the mounting through-hole.
7. The anti-vibration pad as claimed in claim 2, wherein the back surface of the mounting through hole on the mounting disc is provided with a counter bore matched with the limiting sheet, and the limiting sheet is embedded into the counter bore.
8. The anti-vibration pad according to claim 2, further comprising a steel insert body that is a hollow torus and a card that is a protrusion of one end of the steel insert body in a circumferential direction.
9. Vibration-proof pad according to claim 8, characterized in that said steel insert is inserted into said locating hole from the side of said stop piece, the outer diameter of said steel insert body being the same as the inner diameter of said locating hole.
10. The anti-vibration pad according to claim 8, wherein after the steel insert is sleeved into the positioning hole, the clamping piece is located in the plane of the limiting piece, and the clamping piece is 1-2 mm higher than the mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921835161.7U CN210660763U (en) | 2019-10-29 | 2019-10-29 | Vibration-proof pad of ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921835161.7U CN210660763U (en) | 2019-10-29 | 2019-10-29 | Vibration-proof pad of ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210660763U true CN210660763U (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921835161.7U Active CN210660763U (en) | 2019-10-29 | 2019-10-29 | Vibration-proof pad of ventilator |
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| Country | Link |
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| CN (1) | CN210660763U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594202A (en) * | 2019-10-29 | 2019-12-20 | 浙江科贸实业有限公司 | Vibration-proof pad of ventilator |
-
2019
- 2019-10-29 CN CN201921835161.7U patent/CN210660763U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594202A (en) * | 2019-10-29 | 2019-12-20 | 浙江科贸实业有限公司 | Vibration-proof pad of ventilator |
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