CN114157085A - High-stability noise-reduction motor - Google Patents
High-stability noise-reduction motor Download PDFInfo
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- CN114157085A CN114157085A CN202111456813.8A CN202111456813A CN114157085A CN 114157085 A CN114157085 A CN 114157085A CN 202111456813 A CN202111456813 A CN 202111456813A CN 114157085 A CN114157085 A CN 114157085A
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- motor
- heat dissipation
- noise
- sliding
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a high-stability noise-reduction motor, wherein a side fixing plate is arranged on one side of the motor, the side part of the motor is fixed through a fixing column assembly, when the motor works, the fixing column assembly fixed on the side surface can also move when the motor vibrates, so that the vibration path of the motor is a vertical line and is more regular, the condition that the side wall of the motor knocks an installation bracket to generate noise is avoided, in addition, the rotating shaft of the motor is limited by a rolling bearing, the relative temperature of the rotating shaft is ensured during vibration, the phenomenon that the rotating shaft slightly deflects and rubs with air to generate larger noise is avoided, and the noise during the motor work is greatly reduced, in addition, a temperature control sensor and a heat dissipation fan are arranged, the temperature control sensor can always detect the motor temperature during the motor work, when the motor temperature reaches a threshold value, the small motor is started to enable the heat dissipation fan to work, and the heat dissipation is ensured on the one hand, on the other hand, the small motor can be started when the motor generates too much heat, so that energy waste is avoided.
Description
Technical Field
The invention relates to the technical field of motor installation, in particular to a high-stability noise-reduction motor.
Background
The motor is an electromagnetic device for realizing electric energy conversion or transmission according to the electromagnetic induction law. Its main function is to generate driving torque as power source of electric appliance or various machines. The existing motor support is composed of a fixed seat and a supporting seat, is simple in structure and insufficient in supporting strength, and the contact surface of a base and a motor often can be in friction and collision to cause outward expansion, so that the motor is unstable and vibrates, the motor is damaged, and the use is influenced; at present, the connection between the mounting bracket and the motor shell of the motor is rigid connection, the motor shell and the mounting bracket are connected through riveting or welding, when the motor works with a load, resonance sound between a single machine and the mounting bracket and the load can be easily generated, and because of the rigid connection structure, the slight vibration problem of the motor in operation cannot be buffered or reduced to be directly transmitted to a mounting disc, the integral moving effect is directly influenced, and the vibration and the noise of the whole machine are large when the load operates.
To this end, the chinese patent with publication number CN206023416U discloses a motor bracket with vibration/noise reduction and dust filtration functions, which includes a bracket body, a fixing plate, a motor mounting opening, a motor mounting cavity, a bottom plate, a sound insulation plate, vibration-proof belts, a fixing device, a vibration-proof pad and a fixing frame, wherein the bottom plate is disposed at two ends of the bracket body, the fixing plate is disposed at two ends of the bottom plate, the motor mounting opening is disposed on the fixing plate, the sound insulation plate is disposed on a long side of the bottom plate, the fixing plate, the bottom plate and the sound insulation plate are fixed together by the fixing device, the fixing frame is disposed at the upper end of the sound insulation plate, the vibration-proof belts are disposed at the upper end of the bottom plate, and the vibration-proof pad is disposed at the lower end of the bottom plate. The vibration-proof support is simple and reasonable in structural design, the vibration-proof belt and the vibration-proof pad are arranged on the support, so that the friction collision between the motor and the support can be reduced, the vibration-proof effect is achieved, the sound insulation plate is arranged, the sound insulation and noise reduction effects are achieved, and meanwhile, dust can be prevented from entering the motor and affecting the service life of the motor.
This motor support cushions the motor through shockproof area and acoustic celotex board, promotes stability noise reduction, but the motor can the anti-small vibrations of can bringing back at the buffering in-process, and this kind of vibrations direction does not have the law, can appear the condition that the motor side strikeed the support, produces very big noise, and motor shaft department does not have spacingly, also can take place the deviation when vibrations, and also can send the noise between the air current, and consequently this support noise reduction effect is not good.
To this end, we propose a high-stability noise-reduction type motor to solve the above problems.
Disclosure of Invention
The present invention is directed to a high-stability noise-reduction motor to solve the above problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a high-stability noise reduction type motor comprises a base, a side supporting plate and a fixing cover, wherein a sliding groove is formed in the top surface of the base, a sliding table is connected in the sliding groove in a sliding mode, the top surface of the sliding table is fixedly connected with a damping table, and the cross section of the fixing cover is of an inverted U-shaped structure;
the central position of the side support plate is provided with a shaft hole, the inside of the shaft hole is fixedly connected with the outer side of the rolling bearing, the two ends and the top end of the bottom surface of the side support plate are respectively provided with a plurality of embedding holes, a plurality of plastic gaskets are respectively and fixedly connected in the embedding holes, and the side support plate is provided with two mounting through holes.
Preferably, a plurality of elastic rubber columns are fixedly connected between the sliding groove bottom surface and the sliding table bottom surface, two fixed convex edges are fixedly connected to two sides of the bottom end of the fixed cover respectively, two thread through holes are formed in the fixed convex edges, a threaded hole is formed in the position, corresponding to the thread through hole, of the damping table top surface, and the threaded hole and the thread through hole are connected with a fixing bolt in a threaded mode.
Preferably, one side of the base is fixedly connected with a side fixing plate, one side of the side fixing plate, which is far away from the base, is fixedly connected with a heat dissipation cover, four first through grooves are respectively formed in the four corners of the side fixing plate, and four fixing columns are respectively and fixedly connected to the side of the heat dissipation cover, which is close to the side fixing plate, corresponding to the four first through grooves.
Preferably, four second through grooves are formed in the four fixing columns respectively, the cross sections of the second through grooves are consistent with the cross sections of the first through grooves in shape and size, and the four first through grooves and the four second through grooves are connected with the four fixing column assemblies in a sliding mode respectively.
Preferably, the fixed column assembly comprises a sliding column which is slidably connected in the first through groove and the second through groove, two ends of the sliding column are respectively positioned at the outer sides of the heat dissipation cover and the side fixing plate and are respectively and fixedly connected with two circular plates, and mounting holes are horizontally formed in the sliding column and the two circular plates.
Preferably, the noise reduction sponge is fixedly connected to the outer side of the sliding column, a gasket is fixedly connected to the end portion of the circular plate close to the side fixing plate, the diameter of the circular plate is larger than that of the sliding column, and the length of the sliding column is consistent with the sum of the lengths of the first through groove and the second through groove.
Preferably, a plurality of ventilation holes are formed in the side fixing plate, ventilation openings are formed in the side wall of the heat dissipation cover, ventilation nets are fixedly connected in the ventilation openings, small motors are fixedly connected in the heat dissipation cover through supports, heat dissipation fans are fixedly connected to the rotating shafts of the small motors, temperature control sensors are fixedly connected to the inner side wall of the heat dissipation cover, the temperature control sensors control the small motors to be started and stopped, and motor placement grooves are formed in the top surface of the damping table.
Compared with the prior art, the invention has the beneficial effects that:
the invention arranges a side fixing plate at one side of the motor, fixes the side part of the motor through a fixing column component, when the motor works, the fixing column component fixed at the side surface can also move when the motor shakes, so that the shaking path of the motor is a vertical line, is more regular, and avoids the condition that the side wall of the motor beats the mounting bracket to generate noise, in addition, the rotating shaft of the motor is limited by a rolling bearing, the relative temperature of the rotating shaft is ensured during shaking, the generation of larger noise caused by the friction between the micro offset of the rotating shaft and air is avoided, and the noise during the working of the motor is greatly reduced, in addition, the invention is provided with a temperature control sensor and a heat dissipation fan, the temperature control sensor can always detect the temperature of the motor during the working process of the motor, when the temperature of the motor reaches a threshold value, the small motor is started to enable the heat dissipation fan to work, on one hand, the small motor is started when the heat of the motor is excessively generated, energy waste is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of the explosive structure of the present invention;
FIG. 3 is an enlarged structural view of the explosion structure at the side fixing plate and the heat dissipation cover in the present invention;
FIG. 4 is a schematic cross-sectional view of the present invention;
FIG. 5 is an enlarged view of the fixing post assembly according to the present invention;
FIG. 6 is a schematic view of the side support plate of the present invention;
FIG. 7 is a schematic view of a connection structure of a side support plate and a motor according to the present invention.
In the figure: 1. a base; 2. a fixed cover; 3. a damping table; 4. a side fixing plate; 5. a heat dissipation cover; 6. a fixed post assembly; 7. a small-sized motor; 8. a side support plate 11, a sliding groove; 12. An elastic rubber column; 24. fixing the convex edge; 25. a threaded through hole; 26. fixing the bolt; 31. a sliding table; 36. a threaded hole; 37. a motor placing groove; 41. a first through groove; 42. a vent hole; 51. Fixing a column; 52. a second through groove; 53. a vent; 54. a ventilation net; 55. a temperature control sensor; 61. a sliding post; 62. a circular plate; 63. mounting holes; 64. a noise reducing sponge; 65. a gasket; 71. a support; 72. a heat dissipation fan; 81. mounting a through hole; 82. embedding holes; 83. a shaft hole; 84. A rolling bearing; 85. a plastic gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: a high-stability noise-reduction motor comprises a base 1, a side support plate 8 and a fixed cover 2, wherein a sliding groove 11 is formed in the top surface of the base 1, a sliding table 31 is connected in the sliding groove 11 in a sliding mode, the top surface of the sliding table 31 is fixedly connected with a damping table 3, a motor placing groove 37 is formed in the top surface of the damping table 3, and the section of the fixed cover 2 is of an inverted U-shaped structure;
the central point puts and sets up shaft hole 83 on the side extension board 8, the rigid coupling antifriction bearing 84 outside in shaft hole 83, a plurality of caulking holes 82 are seted up respectively to side extension board 8 bottom surface both ends and top position, a plurality of plastic gaskets 85 of rigid coupling respectively in a plurality of caulking holes 82, set up two installation through-holes 81 on the side extension board 8, when installing the motor, need install side extension board 8 earlier, when installing side extension board 8, cup joint antifriction bearing 84 inboard on the side extension board 8 on the motor bearing, later utilize the bolt to fix side extension board 8 in motor pivot end one side through installation through-hole 81, later place the motor bottom surface on placing the recess 37.
Referring to fig. 2-3, a side fixing plate 4 is fixedly connected to one side of the base 1, a heat dissipating cover 5 is fixedly connected to a side of the side fixing plate 4 away from the base 1, four first through slots 41 are respectively formed at four corners of the side fixing plate 4, and four fixing posts 51 are respectively fixedly connected to positions of the heat dissipating cover 5 close to the side fixing plate 4 corresponding to the four first through slots 41.
Referring to fig. 2-3, four second through grooves 52 are respectively formed in the four fixing posts 51, the cross sections of the second through grooves 52 are identical to the cross sections of the first through grooves 41 in shape and size, and the four fixing post assemblies 6 are respectively slidably connected in the four first through grooves 41 and the four second through grooves 52.
Referring to fig. 5, the fixed column assembly 6 includes a sliding column 61 slidably connected in the first through groove 41 and the second through groove 52, two ends of the sliding column 61 are respectively located at the outer sides of the heat dissipation cover 5 and the side fixing plate 4 and are respectively fixedly connected with two circular plates 62, and the sliding column 61 and the two circular plates 62 are horizontally provided with mounting holes 63.
Referring to fig. 5, a noise reduction sponge 64 is fixedly connected to the outer side of the sliding post 61, a gasket 65 is fixedly connected to the end of the circular plate 62 close to the side fixing plate 4, the diameter of the circular plate 62 is larger than that of the sliding post 61, the length of the sliding post 61 is equal to the sum of the lengths of the first through groove 41 and the second through groove 52, and then bolts are inserted into the mounting holes in the fixing post assembly 6 to fix the side fixing plate 4 with the motor,
referring to fig. 2 and 4, the section of the fixing cover 2 is an inverted U-shaped structure, one side of the fixing cover 2 close to the side inserting plate 32 is fixedly connected with the side clamping plate 21, an inserting groove 22 is formed on the side clamping plate 21 corresponding to the side inserting plate 32, the bottom surface of the inserting groove 22 is an open structure, and the side inserting plate 32 is inserted into the inserting groove 22;
referring to fig. 4, a plurality of elastic rubber columns 12 are fixedly connected between the bottom surface of the sliding slot 11 and the bottom surface of the sliding table 31, two fixing flanges 24 are fixedly connected to two sides of the bottom end of the fixing cover 2 respectively, two threaded through holes 25 are formed in the fixing flanges 24, threaded holes 36 are formed in the top surface of the damping table 3 corresponding to the threaded through holes 25, the threaded holes 36 and the threaded through holes 25 are connected with fixing bolts 26 through internal threads, finally the fixing cover 2 is covered above the motor, and the fixing cover 2 is fixed through the fixing bolts 26, the installation can be completed, when the motor works and vibrates, the whole motor can be buffered under the action of the damping table 3 and the elastic rubber column 12, the working stability of the motor is improved, meanwhile, when the motor vibrates and slightly displaces, the fixed column assembly 6 fixed on the side surface also moves, and the rolling bearing 84 can avoid the situation that the rotating shaft of the motor slightly deviates during vibration.
Referring to fig. 3, a plurality of vent holes 42 are formed in the side fixing plate 4, a vent 53 is formed in the side wall of the heat dissipation cover 5, a ventilation net 54 is fixedly connected in the vent 53, a small motor 7 is fixedly connected in the heat dissipation cover 5 through a bracket 71, a heat dissipation fan 72 is fixedly connected at the rotating shaft of the small motor 7, a temperature control sensor 55 is fixedly connected to the inner side wall of the heat dissipation cover 5, the temperature control sensor 55 controls the small motor 7 to be turned on or off, the temperature control sensor 55 can always detect the motor temperature during the working process of the motor, and when the motor temperature reaches a threshold value, the small motor 7 is started to enable the heat dissipation fan 72 to work to dissipate heat of the motor. The invention sets a side fixing plate 4 on one side of the motor, fixes the side of the motor through a fixing column component 6, when the motor works, the fixing column component 6 fixed on the side moves when the motor works, so that the vibration path of the motor is vertical, more regular, and avoids the condition that the side wall of the motor knocks the mounting bracket to generate noise, in addition, the rotating shaft of the motor is limited by a rolling bearing 84, when the motor works, the rotating shaft is relatively stable, and the rotating shaft is prevented from generating larger noise due to the friction between the small deviation and air, thereby greatly reducing the noise when the motor works, in addition, the invention sets a temperature control sensor 55 and a heat radiation fan 72, when the motor works, the temperature control sensor 55 can always detect the motor temperature, when the motor temperature reaches the threshold value, the small motor 7 is started to work the heat radiation fan 72, on one hand, the heat radiation is ensured, on the other hand, the small motor 7 is started when the motor generates too much heat, energy waste is avoided.
The working principle is as follows: when the motor is installed, the side support plate 8 needs to be installed firstly, when the side support plate 8 is installed, the inner side of the rolling bearing 84 on the side support plate 8 is sleeved on the motor bearing, then the side support plate 8 is fixed on one side of the rotating shaft end of the motor through the installation through hole 81 by using a bolt, then the bottom surface of the motor is placed on the placing groove 37 and then inserted into the installation hole in the fixed column component 6 by using the bolt, the side fixing plate 4 is fixed with the motor, finally the fixing cover 2 is covered above the motor, and the fixing cover 2 is fixed through the fixing bolt 26, so that the installation can be completed, when the motor works, the whole motor can be buffered under the action of the damping table 3 and the elastic rubber column 12, the working stability of the motor is improved, when the motor vibrates and generates small displacement, the fixed column component 6 fixed on the side surface also moves, and the rolling bearing 84 can avoid the condition that the rotating shaft of the motor generates small displacement during vibration, in the working process of the motor, the temperature control sensor 55 can always detect the temperature of the motor, and when the temperature of the motor reaches a threshold value, the small motor 7 is started to enable the heat dissipation fan 72 to work to dissipate heat of the motor. The invention sets a side fixing plate 4 on one side of the motor, fixes the side of the motor through a fixing column component 6, when the motor works, the fixing column component 6 fixed on the side moves when the motor works, so that the vibration path of the motor is vertical, more regular, and avoids the condition that the side wall of the motor knocks the mounting bracket to generate noise, in addition, the rotating shaft of the motor is limited by a rolling bearing 84, the relative temperature is caused during vibration, the generation of larger noise caused by the friction between the micro offset of the rotating shaft and air is avoided, and the noise during the motor work is greatly reduced, in addition, the invention sets a temperature control sensor 55 and a heat dissipation fan 72, during the motor work, the temperature control sensor 55 can always detect the motor temperature, when the motor temperature reaches the threshold value, the small motor 7 is started to enable the heat dissipation fan 72 to work, on one hand, on the other hand, the small motor 7 is started when the motor generates too much heat, energy waste is avoided.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a type of making an uproar motor falls in high stability, includes base (1), collateral branch board (8) and fixed cover (2), its characterized in that:
the top surface of the base (1) is provided with a sliding groove (11), the sliding groove (11) is connected with a sliding table (31) in a sliding manner, the top surface of the sliding table (31) is fixedly connected with a damping table (3), and the section of the fixed cover (2) is of an inverted U-shaped structure;
the central position is seted up shaft hole (83) on side extension board (8), rigid coupling antifriction bearing (84) outside in shaft hole (83), a plurality of caulking holes (82) are seted up respectively to side extension board (8) bottom surface both ends and top position, and is a plurality of respectively rigid coupling a plurality of plastic gaskets (85) in caulking hole (82), set up two installation through-holes (81) on side extension board (8).
2. The high-stability noise-reduction motor according to claim 1, wherein: a plurality of elastic rubber posts (12) of rigid coupling between slip fluting (11) bottom surface and slip table (31) bottom surface, two fixed chimbs (24) of fixed cover (2) bottom both sides rigid coupling respectively, set up two screw thread through-holes (25) on fixed chimb (24), shock attenuation platform (3) top surface corresponds screw thread through-hole (25) position and sets up screw hole (36), screw hole (36) and screw thread through-hole (25) female connection fixing bolt (26).
3. The high-stability noise-reduction motor according to claim 1, wherein: the side fixing plate is characterized in that one side of the base (1) is fixedly connected with a side fixing plate (4), the side fixing plate (4) is far away from one side of the base (1) and is fixedly connected with a heat dissipation cover (5), four first through grooves (41) are respectively formed in the positions of four corners of the side fixing plate (4), and the positions, close to one side of the side fixing plate (4), of the heat dissipation cover (5) corresponding to the four first through grooves (41) are fixedly connected with four fixing columns (51) respectively.
4. A high-stability noise-reduction type motor according to claim 3, wherein: four second through grooves (52) are respectively formed in the four fixing columns (51), the cross sections of the second through grooves (52) are consistent with the cross section shape and size of the first through groove (41), and the four fixing column assemblies (6) are respectively connected in the four first through grooves (41) and the four second through grooves (52) in a sliding mode.
5. The high-stability noise-reduction motor according to claim 4, wherein: fixed post subassembly (6) are including sliding connection sliding column (61) in leading to groove (41) and second through groove (52) in first, sliding column (61) both ends are located heat exchanger (5) and side fixing plate (4) outside and are the rigid coupling respectively two plectanes (62), mounting hole (63) are established to the level in sliding column (61) and two plectanes (62).
6. The high-stability noise-reduction motor according to claim 5, wherein: the noise reduction sponge (64) is fixedly connected to the outer side of the sliding column (61), a gasket (65) is fixedly connected to the end portion of a circular plate (62) close to the side fixing plate (4), the diameter of the circular plate (62) is larger than that of the sliding column (61), and the length of the sliding column (61) is consistent with the sum of the lengths of the first through groove (41) and the second through groove (52).
7. The high-stability noise-reduction motor according to claim 4, wherein: set up a plurality of ventilation holes (42) on side fixed plate (4), vent (53) are seted up to heat dissipation cover (5) lateral wall, rigid coupling ventilation net (54) in vent (53), through support (71) rigid coupling small motor (7) in heat dissipation cover (5), small motor (7) pivot department rigid coupling heat dissipation fan (72), heat dissipation cover (5) inside wall rigid coupling temperature-sensing ware (55), opening and close of temperature-sensing ware (55) control small motor (7), damping platform (3) top surface is seted up the motor and is placed recess (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111456813.8A CN114157085B (en) | 2022-01-25 | 2022-01-25 | High-stability noise-reduction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111456813.8A CN114157085B (en) | 2022-01-25 | 2022-01-25 | High-stability noise-reduction motor |
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| Publication Number | Publication Date |
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| CN114157085A true CN114157085A (en) | 2022-03-08 |
| CN114157085B CN114157085B (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111456813.8A Active CN114157085B (en) | 2022-01-25 | 2022-01-25 | High-stability noise-reduction motor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160072355A1 (en) * | 2014-09-05 | 2016-03-10 | New Motech Co., Ltd. | Fan motor |
| CN209104927U (en) * | 2018-09-12 | 2019-07-12 | 广东力好科技股份有限公司 | A kind of connection structure of flat wire motor high intensity |
| CN211630006U (en) * | 2019-12-13 | 2020-10-02 | 天津市西青区华兴电机制造有限公司 | Motor frame with anti-vibration noise reduction function |
| CN112448541A (en) * | 2019-08-28 | 2021-03-05 | 湖北金合力机电科技有限责任公司 | Motor structure capable of efficiently dissipating heat and reducing noise |
| CN113675988A (en) * | 2021-08-04 | 2021-11-19 | 佛山市朗特电机有限公司 | Stable low-noise permanent magnet motor |
-
2022
- 2022-01-25 CN CN202111456813.8A patent/CN114157085B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160072355A1 (en) * | 2014-09-05 | 2016-03-10 | New Motech Co., Ltd. | Fan motor |
| CN209104927U (en) * | 2018-09-12 | 2019-07-12 | 广东力好科技股份有限公司 | A kind of connection structure of flat wire motor high intensity |
| CN112448541A (en) * | 2019-08-28 | 2021-03-05 | 湖北金合力机电科技有限责任公司 | Motor structure capable of efficiently dissipating heat and reducing noise |
| CN211630006U (en) * | 2019-12-13 | 2020-10-02 | 天津市西青区华兴电机制造有限公司 | Motor frame with anti-vibration noise reduction function |
| CN113675988A (en) * | 2021-08-04 | 2021-11-19 | 佛山市朗特电机有限公司 | Stable low-noise permanent magnet motor |
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| CN114157085B (en) | 2022-11-18 |
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