A motor with high sealing protection

Abstract

The present invention discloses a highly sealed motor, comprising a motor body, a rotatable output shaft disposed at the upper end of the motor body, a transmission key hole disposed at the upper end of the output shaft, and a sealing base and a sealing assembly; the sealing base comprises a fixed outer ring, a shaft bundle tube, a lower cone head, and a lower sealing ring; the sealing assembly comprises a sealing housing, a transmission middle shaft, an extrusion assembly, and also comprises a first input assembly and a second input assembly. The highly sealed motor described in this case can achieve double-layer protection for both the upper and lower sides of the output shaft: first, based on the pipe opening of the shaft bundle tube, there is a double-layer static sealing protection below it and a double-layer dynamic sealing protection above it.

Description

Technical Field

[0001] The present application relates to the technical field of motors, and in particular to a motor with a high degree of sealing protection. Background Art

[0002] The motor seal is a key factor in ensuring the safety and reliability of the motor, and it is directly related to the normal operation and life of the motor. The main parts of the motor seal include but are not limited to the seal at the end cover, the seal at the shaft extension, the seal at the junction box, and the seal at the outlet. The existing technology usually uses a single sealing ring to seal the shaft extension, but due to the loss caused by the rotation of the shaft, it is easy to cause the seal at the shaft extension to fail. Therefore, it is necessary to design a motor that can clamp a higher degree of sealing protection at the shaft extension. Summary of the invention

[0003] A highly sealed and protected motor comprises a motor body, an output shaft rotatably arranged at the upper end of the motor body, a transmission key hole being arranged at the upper end of the output shaft, and further comprising:

[0004] A sealing base, fixedly arranged on the upper end of the motor body;

[0005] The sealing assembly is detachably arranged on the upper end of the motor body, and is used for transmission connection with the output shaft and realizing sealing cooperation with the sealing base.

[0006] As a further implementation:

[0007] The sealing basis includes:

[0008] A fixed outer ring is arranged on the outer edge of the upper end surface of the motor body;

[0009] A shaft tube, which is arranged on the upper end surface of the motor body and sleeved on the output shaft;

[0010] A lower cone head is arranged on the outer wall of the rotating shaft bundle tube, and the lower cone head is in a cone shape with a narrow upper part and a wide lower part;

[0011] A lower sealing ring, arranged on the outer wall of the fixed outer ring;

[0012] The sealing assembly comprises:

[0013] A sealed shell, comprising a cylindrical shell base, a sealing circular groove arranged at the lower end of the shell base, the sealing circular groove is sealed and connected to a fixed outer ring through a lower sealing ring, the sealed shell also comprises two sealed inner chambers arranged in the shell base from bottom to top, a cylindrical boss is arranged below each sealed inner chamber, a tapered channel which is wide at the top and narrow at the bottom is arranged in each cylindrical boss, longitudinal plug rods are evenly distributed on the upper end surface of each cylindrical boss in the circumferential direction, an upper through hole is arranged on the upper end surface of the shell base, an upper sealing ring is arranged on the upper half of the inner wall of the upper through hole, and a limiting wide hole is arranged on the lower half of the inner wall of the upper through hole;

[0014] The transmission center shaft comprises a center shaft body rotatably arranged in the upper through hole, a limiting convex ring formed on the outer wall of the center shaft body and rotatably matched with the limiting wide hole, an upper cone head formed on the outer wall of the center shaft body and narrow at the top and wide at the bottom, a connecting lower shaft arranged at the lower end of the center shaft body and inserted into the rotating shaft bundle tube, and a transmission plug key arranged at the lower end of the connecting lower shaft and transmission-connected to the transmission key hole, wherein the center shaft body is sealed and connected to the upper through hole through an upper sealing ring;

[0015] There are two extrusion assemblies, which correspond to the sealed inner cavity one by one. The extrusion assembly includes a rotatable annular gear arranged in the corresponding sealed inner cavity and an active thread formed on the inner wall of the annular gear. The extrusion assembly also includes a sliding ring slidably arranged in the sealed inner cavity and a conical pressure ring formed at the lower end of the sliding ring and gradually narrowing from top to bottom. The outer wall of the sliding ring is circumferentially evenly distributed with a cross arm with holes that is plugged into the longitudinal plug rod, and the stop end of the cross arm with holes is also provided with an incomplete thread that is screwed with the active thread; the inner wall and outer wall of each conical pressure ring are respectively provided with a circle of pressure ring sealing ring.

[0016] Furthermore, the sealing assembly also includes:

[0017] A first input assembly is provided at the upper right front portion of the outer wall of the housing base, and is used to drive the ring gear of the extrusion assembly located above; the first input assembly comprises a first housing provided at the housing base, the first housing is connected to the sealed inner cavity located above, a first rotating shaft is rotatably provided in the first housing, and a first gear meshing with the corresponding ring gear is provided on the first rotating shaft; the upper end of the first rotating shaft passes through the first housing;

[0018] The second input component is arranged at the lower left rear half of the outer wall of the shell base, and is used to drive the ring gear of the extrusion component located below; the second input component includes a second shell arranged at the shell base, the second shell is connected to the sealed inner cavity located below, a second rotating shaft is rotatably provided in the second shell, and a second gear meshing with the corresponding ring gear is provided on the second rotating shaft; the upper end of the second rotating shaft passes through the second shell.

[0019] A fixed terminal for connecting to the motor body is respectively arranged at the left front and right rear of the shell base.

[0020] Beneficial effects:

[0021] The highly sealed motor described in this case can achieve double-layer protection on both the upper and lower sides of the output shaft:

[0022] First, taking the pipe opening of the rotating shaft bundle tube as the reference, there is a double layer of static sealing protection underneath:

[0023] The first layer of static sealing protection below is achieved between the fixed outer ring and the sealing circular groove through the lower sealing ring;

[0024] The extrusion assembly located below realizes the second layer of static sealing protection between the conical channel and the lower cone head.

[0025] Then, taking the pipe opening of the rotating shaft bundle pipe as the reference, there is a double layer of dynamic sealing protection above it:

[0026] The first layer of dynamic sealing protection is achieved between the central axis body and the upper through hole through an upper sealing ring;

[0027] The extrusion assembly located at the top realizes the second layer of dynamic sealing protection between the conical channel and the upper cone head.

[0028] The highly sealed motor described in this case can choose to start any extrusion component to adjust the sealing effect; commonly, in this case, only the extrusion component located at the bottom can be started without activating the extrusion component located at the top, thereby reducing the rotational damping of the transmission shaft and the output shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 is a schematic diagram of an embodiment of the motor.

[0031] Figure 2 1 is a front view of an embodiment of the motor.

[0032] Figure 3 is a top view of an embodiment of the motor.

[0033] Figure 4 It is a partial cross-sectional view of an embodiment of the motor.

[0034] Figure 5 yes Figure 4 A cross-sectional view of an embodiment of the AA section.

[0035] Figure 6 yes Figure 4 A cross-sectional view of an embodiment of the BB section.

[0036] Figure 7 is a cross-sectional view of an embodiment of a sealing foundation.

[0037] Figure 8 is a cross-sectional view of an embodiment of the sealing housing.

[0038] Fig. 9 is a cross-sectional view of the extrusion assembly in the first state.

[0039] Fig.10 is a cross-sectional view of the extrusion assembly in the second state.

[0040] In the figure:

[0041] 9. Motor body;

[0042] 8. Output shaft, 81. Transmission key hole;

[0043] 7. Sealing base, 71. Fixed outer ring, 72. Rotating shaft tube, 73. Lower cone head, 74. Lower sealing ring;

[0044] 6. Sealing assembly;

[0045] 1. Sealing shell, 11. Shell base, 12. Sealing circular groove, 13. Sealing inner cavity, 14. Cylindrical boss, 15. Conical channel, 16. Vertically inserted rod, 17. Upper through hole, 18. Upper sealing ring, 19. Limiting wide hole;

[0046] 2. Transmission center shaft, 21. Center shaft body, 22. Limiting convex ring, 23. Upper cone head, 24. Connecting lower shaft, 25. Transmission key;

[0047] 3. Extrusion assembly, 31. Ring gear, 32. Active thread, 33. Sliding collar, 34. Conical pressure ring, 35. Cross arm with hole, 36. Pressure ring seal;

[0048] 4. first input assembly, 41. first housing, 42. first rotating shaft, 43. first gear;

[0049] 5. Second input assembly, 51. Second housing, 52. Second rotating shaft, 53. Second gear. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0051] A highly sealed and protected motor comprises a motor body 9, an output shaft 8 rotatably arranged at the upper end of the motor body 9, a transmission key hole 81 being arranged at the upper end of the output shaft 8, and further comprises:

[0052] A sealing base 7 is fixedly mounted on the upper end of the motor body 9;

[0053] The sealing assembly 6 is detachably arranged on the upper end of the motor body 9 to be connected to the output shaft 8 in a transmission manner and to achieve sealing cooperation with the sealing base 7 .

[0054] As a further implementation:

[0055] The sealing base 7 comprises:

[0056] A fixed outer ring 71 is arranged on the outer edge of the upper end surface of the motor body 9;

[0057] The shaft tube 72 is arranged on the upper end surface of the motor body 9 and sleeved on the output shaft 8;

[0058] A lower cone head 73 is disposed on the outer wall of the rotating shaft bundle tube 72, and the lower cone head 73 is in a cone shape with a narrow upper part and a wide lower part;

[0059] A lower sealing ring 74, arranged on the outer wall of the fixed outer ring 71;

[0060] The sealing assembly 6 comprises:

[0061] The sealed housing 1 comprises a housing base 11 in the shape of a cylinder, a sealing circular groove 12 arranged at the lower end of the housing base 11, the sealing circular groove 12 is sealedly connected to the fixed outer ring 71 through a lower sealing ring 74, the sealed housing 1 also comprises two sealed inner chambers 13 arranged in sequence from bottom to top in the housing base 11, a cylindrical boss 14 is arranged below each sealed inner chamber 13, a tapered channel 15 which is wide at the top and narrow at the bottom is arranged in each cylindrical boss 14, and longitudinally inserted rods 16 are evenly distributed on the upper end surface of each cylindrical boss 14 in the circumferential direction, an upper through hole 17 is also arranged on the upper end surface of the housing base 11, an upper sealing ring 18 is also arranged on the upper half of the inner wall of the upper through hole 17, and a limiting wide hole 19 is also arranged on the lower half of the inner wall of the upper through hole 17;

[0062] The transmission center shaft 2 comprises a center shaft body 21 rotatably disposed in the upper through hole 17, a limiting convex ring 22 formed on the outer wall of the center shaft body 21 and rotatably matched with the limiting wide hole 19, an upper cone head 23 formed on the outer wall of the center shaft body 21 and narrow at the top and wide at the bottom, a connecting lower shaft 24 disposed at the lower end of the center shaft body 21 and inserted into the rotating shaft bundle tube 72, and a transmission plug key 25 disposed at the lower end of the connecting lower shaft 24 and transmission-connected to the transmission key hole 81, wherein the center shaft body 21 is sealedly connected to the upper through hole 17 through an upper sealing ring 18;

[0063] There are two extrusion assemblies 3, and the extrusion assemblies 3 correspond to the sealed inner cavity 13 one by one. The extrusion assembly 3 includes a ring gear 31 rotatably arranged in the corresponding sealed inner cavity 13, and an active thread 32 formed on the inner wall of the ring gear 31. The extrusion assembly 3 also includes a sliding ring 33 slidably arranged in the sealed inner cavity 13, and a conical pressure ring 34 gradually narrowed from top to bottom formed at the lower end of the sliding ring 33. The outer wall of the sliding ring 33 is evenly distributed with a holed cross arm 35 plugged with the longitudinal plug rod 16 in the circumferential direction, and the stop end of the holed cross arm 35 is also provided with an incomplete thread screwed with the active thread 32; the inner wall and outer wall of each conical pressure ring 34 are respectively provided with a circle of pressure ring sealing ring 36.

[0064] Furthermore, the sealing assembly 6 also includes:

[0065] The first input assembly 4 is arranged at the upper right front portion of the outer wall of the housing base 11, and is used to drive the ring gear 31 of the extrusion assembly 3 located above; the first input assembly 4 includes a first housing 41 arranged on the housing base 11, the first housing 41 is connected to the sealed inner cavity 13 located above, a first rotating shaft 42 is rotatably arranged in the first housing 41, and a first gear 43 meshing with the corresponding ring gear 31 is arranged on the first rotating shaft 42; the upper end of the first rotating shaft 42 passes through the first housing 41;

[0066] The second input component 5 is arranged at the lower left rear part of the outer wall of the shell base 11, and is used to drive the ring gear 31 of the extrusion component 3 located below; the second input component 5 includes a second shell 51 arranged on the shell base 11, and the second shell 51 is connected to the sealed inner cavity 13 located below, and a second rotating shaft 52 is rotatably provided in the second shell 51, and a second rotating shaft 52 is provided on the second rotating shaft 52, which is meshed with the corresponding ring gear 31; the upper end of the second rotating shaft 52 is arranged through the second shell 51.

[0067] The housing base 11 is provided with a fixed terminal at the left front and right rear for connecting to the motor body 9 .

[0068] The highly sealed motor described in this case does not affect the normal output of the motor:

[0069] The output shaft 8 and the transmission key hole 81 rotate, thereby acting on the transmission key 25 to drive the transmission shaft 2 to rotate. The transmission shaft 2 is used to connect the external transmission to the load to be driven.

[0070] The highly sealed motor described in this case can achieve multi-layer sealing protection for the shaft extension (i.e., the annular gap between the output shaft 8 and the shaft bundle tube 72):

[0071] First, taking the pipe opening of the rotating shaft bundle pipe 72 as a reference, there is a double layer of static sealing protection underneath:

[0072] The first layer of static sealing protection is achieved between the fixed outer ring 71 and the sealing circular groove 12 through the lower sealing ring 74;

[0073] When the conical pressure ring 34 of the extrusion assembly 3 located below moves downward, the pressure ring seal 36 located on the outside is in sealing contact with the conical channel 15, and the pressure ring seal 36 located on the inside is in sealing contact with the lower cone head 73, thereby realizing a second layer of static sealing protection.

[0074] Then, taking the pipe opening of the rotating shaft bundle pipe 72 as the reference, there is a double layer of dynamic sealing protection above it:

[0075] The first layer of dynamic sealing protection is achieved between the central axis body 21 and the upper through hole 17 through the upper sealing ring 18;

[0076] When the conical pressure ring 34 of the extrusion assembly 3 located above moves downward, the pressure ring seal 36 located on the outside is in sealing contact with the conical channel 15, and the pressure ring seal 36 located on the inside is in sealing contact with the upper cone head 23, thereby realizing the second layer of dynamic sealing protection.

[0077] The motor described in this case can also selectively start only one of the extrusion components 3; commonly, in this case, only the extrusion component 3 located at the bottom can be started without starting the extrusion component 3 located at the top:

[0078] The first rotating shaft 42 and the first gear 43 of the first input component 4 are rotated to drive the corresponding ring gear 31 and the active thread 32 of the extrusion component 3 to rotate. The active thread 32 acts on the cross arm 35 with holes to drive the sliding collar 33 and the conical pressure ring 34 upward. The conical pressure ring 34 no longer squeezes the corresponding conical channel 15 and the upper cone head 23. At this time, the damping of the transmission shaft 2 during rotation is greatly reduced, and the damping of the transmission shaft 2 and the output shaft 8 during rotation is reduced as much as possible.

Claims

1. A highly sealed and protected motor, comprising a motor body (9), an output shaft (8) rotatably arranged at the upper end of the motor body (9), wherein a transmission key hole (81) is arranged at the upper end of the output shaft (8), and characterized in that: Also includes: A sealing base (7) fixedly arranged on the upper end of the motor body (9); A sealing assembly (6) is detachably arranged on the upper end of the motor body (9) and is used for transmission connection with the output shaft (8) and to achieve sealing cooperation with the sealing base (7); The sealing base (7) comprises: A fixed outer ring (71) is arranged on the outer edge of the upper end surface of the motor body (9); A rotating shaft tube (72) is arranged on the upper end surface of the motor body (9) and sleeved on the output rotating shaft (8); A lower cone head (73) is arranged on the outer wall of the rotating shaft bundle tube (72), and the lower cone head (73) is in a cone shape with a narrow upper part and a wide lower part; A lower sealing ring (74) is arranged on the outer wall of the fixed outer ring (71); The sealing assembly (6) comprises: A sealing shell (1) comprises a cylindrical shell base (11), a sealing circular groove (12) arranged at the lower end of the shell base (11), the sealing circular groove (12) being sealedly connected to a fixed outer ring (71) via a lower sealing ring (74), the sealing shell (1) further comprising two sealing inner chambers (13) arranged in sequence from bottom to top in the shell base (11), a cylindrical boss (14) being arranged below each sealing inner chamber (13), each cylindrical boss (14) being provided with a tapered channel (15) which is wider at the top and narrower at the bottom, the upper end surface of each cylindrical boss (14) being evenly distributed with longitudinal insertion rods (16) in the circumferential direction, the upper end surface of the shell base (11) being provided with an upper through hole (17), the upper half of the inner wall of the upper through hole (17) being provided with an upper sealing ring (18), and the lower half of the inner wall of the upper through hole (17) being provided with a limit wide hole (19); The transmission center shaft (2) comprises a center shaft body (21) rotatably arranged in the upper through hole (17), a limiting convex ring (22) formed on the outer wall of the center shaft body (21) and rotatably matched with the limiting wide hole (19), an upper cone head (23) formed on the outer wall of the center shaft body (21) and narrow at the top and wide at the bottom, a connecting lower shaft (24) arranged at the lower end of the center shaft body (21) and inserted into the rotating shaft bundle tube (72), and a transmission key (25) arranged at the lower end of the connecting lower shaft (24) and transmission-connected to the transmission key hole (81), wherein the center shaft body (21) is sealedly connected to the upper through hole (17) via an upper sealing ring (18); Two extrusion assemblies (3) are provided, and the extrusion assemblies (3) correspond to the sealing inner cavity (13) one by one. The extrusion assemblies (3) include a ring gear (31) rotatably arranged in the corresponding sealing inner cavity (13), and an active thread (32) formed on the inner wall of the ring gear (31). The extrusion assembly (3) also includes a sliding collar (33) slidably arranged in the sealing inner cavity (13), and a conical pressure ring (34) formed at the lower end of the sliding collar (33) and gradually narrowing from top to bottom. The outer wall of the sliding collar (33) is uniformly distributed with a hole-carrying cross arm (35) plugged with the longitudinal insertion rod (16) in the circumferential direction, and the stop end of the hole-carrying cross arm (35) is also provided with an incomplete thread screwed with the active thread (32).

2. A highly sealed motor according to claim 1, characterized in that: The inner wall and the outer wall of each conical pressure ring (34) are respectively provided with a pressure ring sealing ring (36).

3. A highly sealed motor according to claim 2, characterized in that: The sealing assembly (6) further comprises: A first input assembly (4) is disposed on the upper right front portion of the outer wall of the housing base (11) and is used to drive a ring gear (31) of an extrusion assembly (3) located above; The second input assembly (5) is arranged at the lower left rear portion of the outer wall of the housing base (11) and is used to drive the ring gear (31) of the extrusion assembly (3) located below.

4. A highly sealed motor according to claim 3, characterized in that: The first input assembly (4) comprises a first housing (41) disposed on the housing base (11), the first housing (41) being connected to a sealed inner cavity (13) located above, a first rotating shaft (42) being rotatably disposed in the first housing (41), and a first gear (43) meshing with a corresponding ring gear (31) being disposed on the first rotating shaft (42); The second input assembly (5) comprises a second housing (51) arranged on the housing base (11); the second housing (51) is connected to a sealed inner cavity (13) located below; a second rotating shaft (52) is rotatably arranged in the second housing (51); and a second gear (53) meshing with a corresponding ring gear (31) is arranged on the second rotating shaft (52).

5. A highly sealed motor according to claim 4, characterized in that: A fixed terminal for connecting to the motor body (9) is respectively provided at the left front and right rear of the housing base (11).

6. A highly sealed and protected motor according to claim 5, characterized in that: The upper end of the first rotating shaft (42) is disposed through the first shell (41), and the upper end of the second rotating shaft (52) is disposed through the second shell (51).

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