A vertical vibration motor

Abstract

The present invention belongs to the technical field of motors, and specifically relates to a vertical vibration motor. Aiming at the disadvantage that the protection sealing structure of the existing vertical vibration motor is not good, resulting in a low protection level, the present invention adopts the following technical solution: a vertical vibration motor, the vertical vibration motor comprising: a base; a stator core with windings; a rotor; a mounting end cover, the mounting end cover having a bearing chamber; a cylindrical roller bearing, the cylindrical roller bearing is pressed into the mounting end cover; an oil seal, the oil seal is placed on the non-mounting side of the cylindrical roller bearing; a wave spring washer, the wave spring washer is located on the non-mounting side of the oil seal; a hole elastic retaining ring, the hole elastic retaining ring is arranged on the mounting end cover and is located on the non-mounting side of the wave spring washer. The beneficial effect of the present invention is that the wave spring washer can avoid rigid collision between the cylindrical roller bearing and the oil seal and the hole elastic retaining ring when they are loose.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a vertical vibration motor. Background Art

[0002] Among the current vibration equipment, horizontal vibration motors are used more frequently, but in some application areas, horizontal vibration motors cannot meet the use requirements, and the installation method cannot meet the requirements. For this reason, vertical vibration motors have emerged.

[0003] The Chinese invention patent with the authorization announcement number CN106208509B discloses a double-flange vertical vibration motor without bolt fixation, the outer peripheral surface of the connecting flange of which is a conical surface, one end of the connecting flange is a connecting end matching the machine base, and the connecting end diameter of the connecting flange is larger than the other end diameter so that the motor is pressed and fixed by an external device having an inner conical surface matching the conical surface. Although this patent solution is easy to fix and has good positioning accuracy, which is conducive to improving product life and protection level, it is not suitable for occasions that require detachability.

[0004] The existing vertical vibration motors that are fixed with flanges and bolts have deficiencies in one or more aspects such as sealing protection performance, parts processing, and whole machine assembly. For example, in the existing vertical vibration motors with bolt flanges, one sealing method used for the bearings is: a bearing chamber is opened in the motor end cover, the bearing is directly pressed into the end cover bearing chamber, a sealing ring is placed on the outside, and it is clamped with a retaining ring to prevent the grease in the bearing from entering the interior of the motor. Although this kind of sealing structure can play a dust-proof role to a certain extent, the effect is often not ideal. As the running time increases, external dust will still enter the interior of the motor, affecting the reliability and safety of the vibration motor and reducing the service life of the vibration motor. Summary of the invention

[0005] The present invention aims to solve the problem that the existing vertical vibration motor has a poor protection sealing structure, resulting in a low protection level, and provides a vertical vibration motor with an improved sealing structure and enhanced protection performance. Furthermore, the processing and assembly are simplified.

[0006] To achieve the above object, the present invention adopts the following technical solution: a vertical vibration motor, the vertical vibration motor comprising:

[0007] A machine base, one end of which is a mounting end and forms a flange mounting portion, and the other end is a non-mounting end, the machine base has an axial hole, and the flange mounting portion is provided with axial mounting holes uniformly distributed in the circumferential direction;

[0008] A winding stator core, wherein the winding stator core is pressed internally into the machine base;

[0009] A rotor, wherein the rotor comprises a rotor core and a rotating shaft;

[0010] A mounting end cover, the mounting end cover is assembled on the mounting end of the machine base, and the mounting end cover has a bearing chamber;

[0011] A tail end cover, the tail end cover is mounted on the non-mounting end of the base;

[0012] A cylindrical roller bearing, wherein the cylindrical roller bearing is internally pressed into the mounting end cover;

[0013] An oil seal, the oil seal being placed on the non-mounting side of the cylindrical roller bearing;

[0014] a wave spring washer, the wave spring washer being located on a non-installation side of the oil seal;

[0015] A hole elastic circlip, which is arranged on the end cover of the mounting end and is located on the non-mounting side of the wave spring washer;

[0016] A fixed eccentric assembly, wherein the fixed eccentric assembly is assembled on the mounting end of the rotating shaft;

[0017] An adjustable eccentric assembly is mounted on the non-installation end of the rotating shaft.

[0018] The vertical vibration motor of the present invention has a wave spring washer placed between the oil seal and the hole elastic ring, and the wave spring washer can prevent the cylindrical roller bearing and the oil seal from having a rigid collision with the hole elastic ring when loose, thus playing a buffering role. The oil seal is preferably a NILOS oil seal.

[0019] As an improvement, the rotating shaft is also provided with an inner ring and an elastic retaining ring for the shaft, and the inner ring and the elastic retaining ring for the shaft are located on the non-installation side of the cylindrical roller bearing.

[0020] As an improvement, the radial clearance between the oil seal and the inner ring is not greater than 0.4 mm.

[0021] As an improvement, a wiring chamber is formed on the base, a wiring board is arranged in the wiring chamber, a lead-out hole is provided on the bottom wall of the wiring chamber, a lead-out wire connecting the winding stator core and the wiring board is arranged in the lead-out hole, and the lead-out wire is fixed with a copper nut.

[0022] As an improvement, the mounting end cover is provided with a sealing groove, in which an O-ring is installed; the rotating shaft is provided with a sealing groove, in which an O-ring is installed; the wiring chamber is provided with a box cover, in which a sealing groove is provided, in which an O-ring is installed; the tail end cover is provided with a protective cover on the outside, a sealing groove is provided on the tail end cover, in which an O-ring is installed. The IP protection performance is improved by providing an O-ring.

[0023] As an improvement, a deep groove ball bearing is installed in the tail end cover, and both ends of the deep groove ball bearing are fixed with elastic retaining rings through the holes in the retaining ring groove installed in the tail end cover. Such a straight-through structure is more conducive to the disassembly, assembly and maintenance of the deep groove ball bearing.

[0024] As an improvement, a disassembly hole is provided at the mounting end of the mounting end cover, and the disassembly hole is a threaded hole and is provided with a hexagon socket flat end set screw. The hexagon socket flat end set screw is provided to prevent the bearing grease from overflowing.

[0025] As an improvement, a groove is machined at the shaft exit position of the mounting end cover of the rotating shaft, a V-shaped sealing ring is installed in the groove, the V-shaped sealing ring contacts the mounting end cover, the surface roughness of the side of the mounting end cover that contacts the V-shaped sealing ring is not greater than 0.8, and grease is filled between the contact surface of the mounting end cover and the V-shaped sealing ring. Since the rotor has string movement, when designing the groove on the rotor, it is necessary to ensure that the V-shaped sealing ring and the end cover can also contact each other at the maximum string movement. Ensure the surface roughness and apply a small amount of grease to reduce the friction between the contact surface of the V-shaped sealing ring and the end cover when the rotor rotates.

[0026] As an improvement, the fixed eccentric assembly includes a fixed eccentric block and a lamellar eccentric block fixed by screws and anti-loosening nuts. The fixed eccentric block is positioned in the flat keyway of the rotating shaft by screws to prevent the fixed eccentric block from loosening and causing radial movement during operation.

[0027] As an improvement, a retaining ring groove is processed on the mounting end of the rotating shaft, and an elastic retaining ring is installed in the retaining ring groove to prevent the fixed eccentric block from loosening and moving outward to cause safety hazards.

[0028] As an improvement, the non-installation end of the rotating shaft is milled with a keyway that is directly connected to the end face, and a circular scale indicator is provided at the installation end of the keyway. The circular scale indicator forms a convex piece, and the convex piece is positioned in the keyway. The non-installation side of the circular scale indicator is provided with a shaft elastic retaining ring. The keyway is directly connected to the end face, and the circular scale indicator is easy to assemble; the circular scale indicator is positioned with the convex piece and the keyway to prevent the circular scale indicator from circumferential displacement; a shaft elastic retaining ring is provided to prevent axial displacement.

[0029] As an improvement, the adjustable eccentric assembly includes an adjustable eccentric block and a sheet eccentric block fixed by screws and locking nuts, and an indicating boss is processed on the adjustable eccentric block, and the indicating boss points to the scale on the circular scale indicator plate. By setting the indicating boss and the circular scale indicator plate, the vibration force of the non-flange side of the vertical vibration motor can be adjusted more conveniently, and the different vibration forces generated by adjusting the angles of the upper and lower ends of the vertical vibration motor directly affect the various screening effects of the circular vibration screen.

[0030] As an improvement, the adjustable eccentric block is provided with a fastening hole, and a chip removal groove is formed at the inner end of the fastening hole.

[0031] The beneficial effect of the vertical vibration motor of the present invention is that a wave spring washer is placed between the oil seal and the hole elastic retaining ring, and the wave spring washer can avoid rigid collision between the cylindrical roller bearing and the oil seal and the hole elastic retaining ring when loose, thereby playing a buffering role. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figures 1 to 3 It is a schematic structural diagram of a vertical vibration motor according to Embodiment 1 of the present invention.

[0033] Figure 4 It is a cross-sectional view of the vertical vibration motor according to the first embodiment of the present invention.

[0034] Figure 5 It is a schematic diagram of the structure of the vertical vibration motor after the protective cover is hidden in the first embodiment of the present invention.

[0035] Figure 6 It is a structural schematic diagram of a base of a vertical vibration motor according to the first embodiment of the present invention.

[0036] Figure 7 It is a schematic structural diagram of the mounting end cover of the vertical vibration motor according to the first embodiment of the present invention.

[0037] Figure 8 It is a schematic structural diagram of an oil seal of a vertical vibration motor according to a first embodiment of the present invention.

[0038] Fig. 9 It is a schematic structural diagram of a wave spring washer of a vertical vibration motor according to the first embodiment of the present invention.

[0039] Fig.10 It is a structural schematic diagram of a fixed eccentric component of a vertical vibration motor according to Embodiment 1 of the present invention.

[0040] Fig.11 It is a structural schematic diagram of an adjustable eccentric component of a vertical vibration motor according to Embodiment 1 of the present invention.

[0041] Fig.12 It is a structural schematic diagram of a circular scale indicator plate of a vertical vibration motor according to the first embodiment of the present invention.

[0042] In the figure, 1, base, 11, wiring room, 12, lead-out hole, 13, box cover;

[0043] 2. There is a winding stator core;

[0044] 3. Rotor;

[0045] 4. Mounting end assembly, 41. Mounting end cover, 411. Disassembly hole, 42. Cylindrical roller bearing, 43. Oil seal, 44. Wave spring washer, 45. Elastic retaining ring for hole, 46. Inner ring, 47. Elastic retaining ring for shaft, 48. V-shaped sealing ring;

[0046] 5. fixed eccentric assembly, 51. fixed eccentric block, 52. lamellar eccentric block;

[0047] 6. tail end assembly, 61. tail end cover, 62. protective cover, 63. circular scale indicator plate, 64. deep groove ball bearing;

[0048] 7. Adjustable eccentric assembly, 71. Adjustable eccentric block, 711. Chip removal groove;

[0049] 8. Terminal block;

[0050] 9. Cable connector. DETAILED DESCRIPTION

[0051] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0052] See also Figures 1 to 12 The present invention adopts the following technical solution: a vertical vibration motor, the vertical vibration motor comprising:

[0053] A machine base, one end of which is a mounting end and forms a flange mounting portion, and the other end is a non-mounting end, the machine base has an axial hole, and the flange mounting portion is provided with axial mounting holes uniformly distributed in the circumferential direction;

[0054] A winding stator core, wherein the winding stator core is pressed internally into the machine base;

[0055] A rotor, comprising a rotor core and a rotating shaft;

[0056] A mounting end cover, the mounting end cover is assembled on the mounting end of the machine base, and the mounting end cover has a bearing chamber;

[0057] A tail end cover, the tail end cover is mounted on the non-mounting end of the base;

[0058] A cylindrical roller bearing, wherein the cylindrical roller bearing is internally pressed into the mounting end cover;

[0059] An oil seal, the oil seal being placed on the non-mounting side of the cylindrical roller bearing;

[0060] a wave spring washer, the wave spring washer being located on a non-installation side of the oil seal;

[0061] A hole elastic circlip, which is arranged on the end cover of the mounting end and is located on the non-mounting side of the wave spring washer;

[0062] A fixed eccentric assembly, wherein the fixed eccentric assembly is assembled on the mounting end of the rotating shaft;

[0063] An adjustable eccentric assembly is mounted on the non-installation end of the rotating shaft.

[0064] The vertical vibration motor of the present invention has a wave spring washer placed between the oil seal and the hole elastic retaining ring. The wave spring washer can prevent the cylindrical roller bearing and the oil seal from having a rigid collision with the hole elastic retaining ring when they are loose, thus playing a buffering role.

[0065] Embodiment 1

[0066] See also Figures 1 to 12 , a vertical vibration motor according to a first embodiment of the present invention, the vertical vibration motor comprises:

[0067] A machine base 1, wherein one end of the machine base 1 is a mounting end and forms a flange mounting portion, and the other end is a non-mounting end, the machine base 1 has an axial hole, and the flange mounting portion is provided with axial mounting holes uniformly distributed in the circumferential direction;

[0068] A winding stator core 2 is provided, wherein the winding stator core 2 is pressed inside the base 1;

[0069] The rotor 3 comprises a rotor 3 core and a rotating shaft;

[0070] A mounting end cover 41, wherein the mounting end cover 41 is assembled on the mounting end of the base 1, and the mounting end cover 41 has a bearing chamber;

[0071] A tail end cover 61, wherein the tail end cover 61 is mounted on the non-installation end of the base 1;

[0072] A cylindrical roller bearing 42, wherein the cylindrical roller bearing 42 is internally pressed into the mounting end cover 41;

[0073] An oil seal 43, wherein the oil seal 43 is placed at a non-installation end of the cylindrical roller bearing 42;

[0074] A wave spring washer 44, wherein the wave spring washer 44 is located on the non-installation side of the oil seal 43;

[0075] The hole elastic circlip 45 is provided on the mounting end cover 41 and is located on the non-mounting side of the wave spring washer 44;

[0076] A fixed eccentric component 5, wherein the fixed eccentric component 5 is assembled at the mounting end of the rotating shaft;

[0077] The adjustable eccentric component 7 is mounted on the non-installation end of the rotating shaft.

[0078] As an improvement, the rotating shaft is further provided with an inner ring 46 and a shaft elastic retaining ring 47 , and the inner ring 46 and the shaft elastic retaining ring 47 are located on the non-installation side of the cylindrical roller bearing 42 .

[0079] As an improvement, the cross section of the oil seal 43 includes a horizontal portion, a first vertical portion, an inclined portion and a second vertical portion from the inside to the outside. The radial clearance between the horizontal portion of the oil seal 43 and the inner ring 46 is not greater than 0.4 mm. The oil seal 43 is preferably a NILOS oil seal 43.

[0080] As an improvement, a wiring chamber 11 is further formed on the base 1, in which a wiring board 8 is arranged, and a lead-out hole 12 is provided on the bottom wall of the wiring chamber 11, in which a lead-out wire connecting the winding stator core 2 and the wiring board 8 is arranged. The lead-out wire is fixed with a copper nut.

[0081] As an improvement, a cable connector 9 is threadedly connected to the machine base 1 , and the cable connector 9 is communicated with the wiring chamber 11 .

[0082] As an improvement, the mounting end cover 41 is provided with a sealing groove, in which an O-ring is installed; the rotating shaft is provided with a sealing groove, in which an O-ring is installed; the wiring chamber 11 is provided with a box cover 13, in which a sealing groove is provided, in which an O-ring is installed; the outer side of the tail end cover 61 is provided with a protective cover 62, in which a sealing groove is provided, in which an O-ring is installed. The IP protection performance is improved by providing an O-ring.

[0083] As an improvement, a deep groove ball bearing 64 is installed in the tail end cover 61, and both ends of the deep groove ball bearing 64 are fixed by elastic retaining rings 45 through the holes in the retaining ring groove installed in the tail end cover 61. Such a straight-through structure is more conducive to the disassembly, assembly and maintenance of the deep groove ball bearing 64.

[0084] As an improvement, the mounting end of the mounting end cover 41 is provided with a disassembly hole 411, which is a threaded hole and is provided with a hexagon socket flat end set screw. The hexagon socket flat end set screw is provided to prevent the bearing grease from overflowing. The disassembly hole 411 is a pair.

[0085] As an improvement, a groove is machined at the shaft exit position of the mounting end cover 41 of the rotating shaft, a V-shaped sealing ring 48 is installed in the groove, the V-shaped sealing ring 48 contacts the mounting end cover 41, the surface roughness of the side of the mounting end cover 41 that contacts the V-shaped sealing ring 48 is not greater than 0.8, and grease is filled between the contact surface of the mounting end cover 41 and the V-shaped sealing ring 48. Since the rotor 3 has string movement, when designing the groove on the rotor 3, it is necessary to ensure that the V-shaped sealing ring 48 and the end cover can also contact each other at the maximum string movement. Ensure the surface roughness and apply a small amount of grease to reduce the friction between the V-shaped sealing ring 48 and the contact surface of the end cover when the rotor 3 rotates.

[0086] As an improvement, the V-shaped sealing ring 48 includes a block portion and an inclined portion, and the thickness of the block portion is greater than the thickness of the inclined portion.

[0087] As an improvement, the fixed eccentric assembly 5 includes a fixed eccentric block 51 and a lamellar eccentric block 52 fixed by screws and anti-loosening nuts. The fixed eccentric block 51 is positioned in the flat keyway of the rotating shaft by screws to prevent the fixed eccentric block 51 from moving radially during operation due to loosening.

[0088] As an improvement, a retaining ring groove is processed at the mounting end of the rotating shaft, and an elastic retaining ring 47 for mounting the shaft in the retaining ring groove is used to prevent the fixed eccentric block 51 from loosening and moving outward and being thrown out to cause safety hazards.

[0089] As an improvement, the non-installation end of the shaft is milled with a keyway that is directly connected to the end face, and a circular scale indicator plate 63 is provided at the installation end of the keyway. The circular scale indicator plate 63 forms a convex piece, and the convex piece is positioned in the keyway. The non-installation side of the circular scale indicator plate 63 is provided with a shaft elastic retaining ring 47. The keyway is directly connected to the end face, and the circular scale indicator plate 63 is easy to assemble; the circular scale indicator plate 63 is positioned with the keyway through the convex piece to prevent the circular scale indicator plate 63 from circumferential displacement; the shaft elastic retaining ring 47 is provided to prevent axial displacement.

[0090] As an improvement, the adjustable eccentric assembly 7 includes an adjustable eccentric block 71 and a sheet eccentric block 52 fixedly connected by screws and locking nuts, and an indicating boss is processed on the adjustable eccentric block 71, and the indicating boss points to the scale on the circular scale indicator plate 63. By setting the test boss and the circular scale indicator plate, the vibration force of the non-flange side of the vertical vibration motor can be adjusted more conveniently, and the different vibration forces generated by adjusting the angles of the upper and lower ends of the vertical vibration motor directly affect various screening effects on the circular vibration screen.

[0091] As an improvement, the adjustable eccentric block 71 is provided with a fastening hole, and a chip removal groove 711 is processed at the inner end of the fastening hole.

[0092] The beneficial effect of the vertical vibration motor of the first embodiment of the present invention is that a wave spring washer 44 is placed between the oil seal 43 and the elastic retaining ring 45 for the hole. The wave spring washer 44 can avoid rigid collision between the cylindrical roller bearing 42 and the oil seal 43 and the elastic retaining ring 45 for the hole when they are loose, thereby playing a buffering role.

[0093] The above is only a specific implementation of the invention, but the protection scope of the invention is not limited thereto. Those skilled in the art should understand that the invention includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the invention will be included in the scope of the claims.

Claims

1. A vertical vibration motor, characterized in that: The vertical vibration motor comprises: A machine base (1), one end of the machine base (1) is a mounting end and forms a flange mounting portion, and the other end is a non-mounting end, the machine base (1) has an axial hole, and the flange mounting portion is provided with axial mounting holes uniformly distributed in the circumferential direction; A winding stator core (2) is provided, wherein the winding stator core (2) is pressed inside the machine base (1); A rotor (3), wherein the rotor (3) comprises a rotor core and a rotating shaft; A mounting end cover (41), the mounting end cover (41) being mounted on the mounting end of the machine base (1), the mounting end cover (41) having a bearing chamber; A tail end cover (61), wherein the tail end cover (61) is mounted on a non-installation end of the machine base (1); A cylindrical roller bearing (42), wherein the cylindrical roller bearing (42) is internally pressed into the mounting end cover (41); An oil seal (43), wherein the oil seal (43) is placed on the non-installation side of the cylindrical roller bearing (42); A wave spring washer (44), wherein the wave spring washer (44) is located on the non-installation side of the oil seal (43); A hole elastic circlip (45), the hole elastic circlip (45) being arranged on the mounting end cover (41) and located on the non-mounting side of the wave spring washer (44); A fixed eccentric assembly (5), wherein the fixed eccentric assembly (5) is assembled on the mounting end of the rotating shaft; An adjustable eccentric component (7) is mounted on the non-installation end of the rotating shaft.

2. A vertical vibration motor according to claim 1, characterized in that: The rotating shaft is also provided with an inner ring (46) and a shaft elastic retaining ring (47), the inner ring (46) and the shaft elastic retaining ring (47) are located on the non-installation side of the cylindrical roller bearing (42), and the radial clearance between the oil seal (43) and the inner ring (46) is not greater than 0.4 mm.

3. A vertical vibration motor according to claim 1, characterized in that: A wiring chamber (11) is also formed on the machine base (1), a wiring board (8) is provided in the wiring chamber (11), a lead-out hole (12) is provided on the bottom wall of the wiring chamber (11), and a lead-out wire connecting the winding stator core (2) and the wiring board (8) is provided in the lead-out hole (12).

4. A vertical vibration motor according to claim 3, characterized in that: The mounting end cover (41) is provided with a sealing groove, in which an O-type sealing ring is installed; the rotating shaft is provided with a sealing groove, in which an O-type sealing ring is installed; the wiring chamber (11) is provided with a box cover (13), in which a sealing groove is provided, in which an O-type sealing ring is installed; a protective cover is provided on the outer side of the tail end cover (61), and a sealing groove is provided on the tail end cover (61), in which an O-type sealing ring is installed.

5. A vertical vibration motor according to claim 1, characterized in that: A deep groove ball bearing (64) is installed in the tail end cover (61), and both ends of the deep groove ball bearing (64) are fixed by elastic retaining rings (45) through holes installed in retaining ring grooves of the tail end cover (61).

6. A vertical vibration motor according to claim 1, characterized in that: A disassembly hole (411) is provided at the mounting end of the mounting end cover (41), and the disassembly hole (411) is a threaded hole and is provided with a hexagon socket flat-end set screw.

7. A vertical vibration motor according to claim 1, characterized in that: A groove is machined at the shaft exit position of the mounting end cover (41) of the rotating shaft, a V-shaped sealing ring (48) is installed in the groove, the V-shaped sealing ring (48) contacts the mounting end cover (41), the surface roughness of the side of the mounting end cover (41) contacting the V-shaped sealing ring (48) is not greater than 0.8, and grease is filled between the contact surfaces of the mounting end cover (41) and the V-shaped sealing ring (48).

8. A vertical vibration motor according to claim 1, characterized in that: The fixed eccentric assembly (5) comprises a fixed eccentric block (51) and a sheet eccentric block (52) fixedly connected by screws and locking nuts, wherein the fixed eccentric block (51) is positioned in a flat keyway of the rotating shaft by means of screws; a retaining ring groove is machined on the mounting end of the rotating shaft, and a shaft elastic retaining ring (47) is mounted in the retaining ring groove.

9. A vertical vibration motor according to claim 1, characterized in that: The non-installation end of the rotating shaft is milled with a keyway that is directly connected to the end face, and the installation end of the keyway is provided with a circular scale indicator plate (63), the circular scale indicator plate (63) forms a convex piece, and the convex piece is positioned in the keyway, and the non-installation side of the circular scale indicator plate (63) is provided with a shaft elastic retaining ring (47).

10. A vertical vibration motor according to claim 1, characterized in that: The adjustable eccentric assembly (7) comprises an adjustable eccentric block (71) and a sheet eccentric block (52) fixedly connected by screws and locking nuts. An indicating boss is machined on the adjustable eccentric block (71), and the indicating boss points to the scale on the circular scale indicator plate (63).

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