A short-axis symmetrical explosion-proof vibration motor

Abstract

The present invention discloses a short-axis symmetrical explosion-proof vibration motor, which relates to the technical field of vibration motors. It includes a barrel, a stator and a rotor; the stator is arranged inside the barrel, the rotor is sleeved inside the stator, and is matched with the stator in a clearance; the two sides of the rotor are sleeved with rotor rings, bearings and eccentric block modules in sequence; the bearing is installed on a bearing seat connected to the barrel, a part of the bearing seat is located inside the barrel, and a part is located outside the barrel, and explosion-proof covers are also provided at both ends of the barrel, and a part of the eccentric block module and the bearing seat are located inside the explosion-proof cover; a brake assembly is also provided in the explosion-proof cover, and the brake assembly is used to stop the eccentric block module from rotating. The present invention can automatically brake the motor after the power is cut off, so that the rotor and the eccentric block module stop rotating quickly, and will not cause impact to the motor during braking, thereby avoiding affecting the service life of the motor.

Description

Technical Field

[0001] The invention relates to the technical field of vibration motors, and in particular to a short-axis symmetrical explosion-proof vibration motor. Background Art

[0002] The vibration motor is an exciting source that combines a power source with a vibration source. The vibration motor is equipped with a set of adjustable eccentric blocks at both ends of the rotor shaft, and the centrifugal force generated by the high-speed rotation of the shaft and the eccentric blocks is used to obtain the exciting force. The vibration motor has high exciting force utilization, low energy consumption, low noise, long life, and the exciting force of the vibration motor can be adjusted steplessly, which is easy to use. It is widely used in hydropower construction, thermal power generation, construction, building materials, chemicals, mining, coal, metallurgy, light industry and other industrial sectors.

[0003] However, after the vibration motor is powered off, its shaft and eccentric block will continue to rotate for a period of time due to inertia and cannot be stopped immediately. If the shaft and eccentric block are stopped immediately, the motor will be impacted and its service life will be affected. Summary of the invention

[0004] The main purpose of the present invention is to provide a short-axis symmetrical explosion-proof vibration motor to solve the above problems.

[0005] To achieve the above object, the present invention provides a short-axis symmetrical explosion-proof vibration motor, comprising a barrel, a stator and a rotor;

[0006] The stator is arranged inside the barrel, and the rotor is sleeved inside the stator and is loosely matched with the stator;

[0007] The two sides of the rotor are sleeved with rotor rings, bearings and eccentric blocks in sequence; the bearing is installed on a bearing seat connected to the barrel, a part of the bearing seat is located inside the barrel, and a part of the bearing seat is located outside the barrel, and explosion-proof covers are also provided at both ends of the barrel, and the eccentric block module and a part of the bearing seat are located inside the explosion-proof covers;

[0008] A brake assembly is also provided in the explosion-proof cover, and the brake assembly is used to stop the rotation of the eccentric block.

[0009] Further, the brake assembly includes a brake cover, an electromagnet and a micro oil pump;

[0010] The brake cover is provided with an inner cavity inside, and an opening and closing cavity and an oil cavity are sequentially provided on both sides of the inner cavity, and a top opening and a bottom opening are respectively provided on the top and the bottom of the inner cavity, the top of the top opening is communicated with the oil cavity, and the two sides are communicated with the opening and closing cavity, the bottom of the bottom opening is communicated with the oil cavity, and the two sides are communicated with the opening and closing cavity, and an oil collecting tank is provided at the connection between the oil cavity and the top opening;

[0011] The electromagnet is arranged in the middle of the top opening and is electrically connected to the stator. The micro oil pump is arranged in the oil collecting tank and is connected to the bottom of the oil cavity through a pipeline. The micro oil pump is electrically connected to the stator. The oil cavity and the opening and closing cavity are both arc-shaped. An arc-shaped slider adapted to the size of the opening and closing cavity is arranged in the opening and closing cavity. The bottom end of the arc-shaped slider is a magnet. Damping oil is arranged in the oil collecting tank.

[0012] The eccentric block module is arranged inside the inner cavity, the rotor extends into the inner cavity and is connected with the eccentric block module, and the brake cover is sealed and connected with the rotor.

[0013] Furthermore, a one-way valve is arranged in the oil chamber, and the one-way valve is used to prevent the damping oil from flowing downward.

[0014] Furthermore, a bearing baffle is connected to the outer side of the rotor ring, and the bearing baffle is used to fix the bearing on the bearing seat.

[0015] Furthermore, the eccentric block module includes an active eccentric block and a driven eccentric block, the active eccentric block is provided with a plurality of threaded holes, the driven eccentric block is provided with a plurality of through holes, and the positions of the threaded holes and the through holes correspond to different rotation angles between the active eccentric block and the driven eccentric block.

[0016] Furthermore, a wiring slot is provided at the top of the barrel, a terminal post is provided in the wiring slot, the bottom of the terminal post is electrically connected to the stator, and a wiring cover is connected to the top of the wiring slot, and the wiring cover is used to prevent the wiring slot from communicating with the outside.

[0017] Furthermore, a cable sealing joint is provided on the side of the top of the barrel, and the cable sealing joint extends into the wiring groove and is electrically connected to the wiring post.

[0018] Furthermore, a cable opening is provided at the bottom of the wiring trough, and a cable connecting the terminal post and the stator passes through the cable opening; epoxy resin is also provided at the bottom of the wiring trough, and the epoxy resin is used to seal the cable opening through which the cable is passed.

[0019] The present invention can prevent external dust, sparks, arcs and high-temperature electricity from entering the interior of the motor and automatically brake the motor after the motor is powered off, so that the rotor and the eccentric block module stop rotating quickly, and will not cause impact on the motor during braking, thereby avoiding affecting the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is an overall schematic diagram of a short-axis symmetrical explosion-proof vibration motor of the present invention.

[0021] Figure 2 The figure is a schematic diagram of an eccentric block of a short-axis symmetrical explosion-proof vibration motor of the present invention.

[0022] Figure 3 The figure is a schematic diagram of the internal structure of a short-axis symmetrical explosion-proof vibration motor of the present invention.

[0023] Figure 4 This is a schematic diagram of a short-axis symmetrical explosion-proof vibration motor brake assembly when powered on.

[0024] Figure 5 It is a schematic diagram of a short-axis symmetrical explosion-proof vibration motor brake assembly when it is powered off.

[0025] Among them, 1-barrel; 2-stator; 3-rotor; 4-rotor ring; 5-bearing; 6-bearing seat; 7-explosion-proof cover; 8-brake cover; 9-electromagnet; 10-micro oil pump; 11-inner cavity; 12-opening and closing cavity; 13-oil cavity; 14-oil collecting tank; 15-arc-shaped slider; 16-bearing baffle; 17-active eccentric block; 18-driven eccentric block; 19-wiring slot; 20-wiring post; 21-wiring cover; 22-cable sealing joint; 23-epoxy resin. DETAILED DESCRIPTION

[0026] In order to achieve the above-mentioned purpose and effect, the technical means and structures adopted by the present invention are described in detail with reference to the accompanying drawings for the features and functions of the preferred embodiments of the present invention.

[0027] like Figure 1-5 As shown, the present invention provides a short-axis symmetrical explosion-proof vibration motor, comprising a barrel 1, a stator 2 arranged in the barrel 1, and a rotor 3 sleeved in the stator 2 and loosely matched with the stator 2; explosion-proof covers 7 are also provided on both sides of the barrel 1, and the interior of the explosion-proof cover 7 is connected to the interior of the barrel 1, so that the part of the rotor 3 extending out of the barrel 1 is protected in the explosion-proof cover 7, and an O-ring is provided at the connection between the explosion-proof cover 7 and the barrel 1, and the joint surface between the two is a flameproof joint surface.

[0028] The rotor 3 is provided with a rotor collar 4, a bearing 5 and an eccentric block module in sequence on both sides;

[0029] The bearing 5 is connected to the barrel 1 through the bearing seat 6. A part of the bearing seat 6 is located in the barrel 1, and the other part is located in the explosion-proof cover 7. An O-ring is provided at the connection between the bearing seat 6 and the barrel 1, and the joint surface between the two is a flameproof joint surface.

[0030] The rotor ring 4 is interference fit with the rotor 3, and a bearing baffle 16 is connected to the outer side of the rotor ring 4. The bearing baffle 16 contacts the bearing 5 and is fixedly connected to the bearing seat 6, so that the bearing 5 is fixed on the bearing seat 6. The joint surface between the bearing baffle 16, the rotor ring 4 and the bearing seat 6 is a flameproof joint surface.

[0031] The eccentric block module includes an active eccentric block 17 close to the stator 2 and a driven eccentric block 18 far away from the stator 2. The active eccentric block 17 is provided with a plurality of threaded holes, and the driven eccentric block 18 is provided with a plurality of through holes corresponding to the sizes of the threaded holes. When the rotation angle between the active eccentric block 17 and the driven eccentric block 18 changes, a screw can be passed through the through hole and screwed into the threaded hole, so as to fix the rotation angle between the active eccentric block 17 and the driven eccentric block 18, thereby realizing the adjustment of the exciting force.

[0032] A brake assembly is also provided in the explosion-proof cover 7, and the brake assembly includes a brake cover 8, an electromagnet 9 and a micro oil pump 10;

[0033] The brake cover 8 is a cylinder with an inner cavity 11 arranged inside. An opening and closing cavity 12 and an oil cavity 13 are symmetrically arranged on both sides of the inner cavity 11. A top opening is arranged at the top of the inner cavity 11, and a bottom opening is arranged at the bottom. A rotor opening is arranged on the side perpendicular to the surface where the two opening and closing cavities 12 are located. The end of the rotor 3 extends into the inner cavity 11 through the rotor opening. The active eccentric block 17 and the driven eccentric block 18 are both located inside the inner cavity 11, and the rotor 3 is sealed and connected to the rotor opening.

[0034] The top of the top opening is connected to the oil chamber 13, and the two sides are connected to the opening and closing chamber 12. The bottom of the bottom opening is connected to the oil chamber 13, and the two sides are connected to the opening and closing chamber 12. An oil collecting groove 14 is provided at the connection between the oil chamber 13 and the top opening; damping oil is provided in the oil chamber 13, and an arc-shaped slider 15 adapted to the size of the opening and closing chamber 12 is provided in the opening and closing chamber 12. The bottom end of the arc-shaped slider 15 is a magnet, and the magnets at the same ends of the two symmetrical arc-shaped sliders 15 have different magnetic poles. When no force is applied, the two arc-shaped sliders 15 are attracted to each other to close the bottom opening.

[0035] The electromagnet 9 is arranged in the middle of the top opening and is electrically connected to the stator 2. When the electromagnet 9 is energized, the two arc-shaped sliders 15 will be adsorbed on the electromagnet 9 to close the top opening. The micro oil pump 10 is arranged in the oil collecting trough 14 and is connected to the bottom of the oil chamber 13 through a pipeline. The micro oil pump 10 is electrically connected to the stator 2. When the micro oil pump 10 is energized, the damping oil in the oil chamber 13 will be sucked into the oil collecting trough 14.

[0036] In actual use, when the motor stops working, the stator 2 is powered off, and the rotor 3 continues to rotate under the action of inertia. The electromagnet 9 and the micro oil pump 10 electrically connected to the stator 2 are then powered off. Under the action of gravity and the mutual attraction of the magnets at the bottom ends of the two arc-shaped sliders 15 in the opening and closing cavity 12, the bottom ends of the two arc-shaped sliders 15 are adsorbed together, so that the bottom opening is closed and the top opening is opened. At this time, the damping oil in the oil collecting tank 14 will fall into the inner cavity 11, hindering the rotation of the active eccentric block 17 and the driven eccentric block 18, causing them to slow down continuously until they stop rotating.

[0037] When the motor is started again, the stator 2 is energized, and the electromagnet 9 and the micro oil pump 10 electrically connected to the stator 2 are then energized. At this time, the electromagnet 9 will absorb the top ends of the two arc-shaped sliders 15, closing the top opening and opening the bottom opening. The damping oil in the inner cavity 11 will leave the inner cavity 11 and enter the oil cavity 13 under the action of gravity. At the same time, the micro oil pump 10 will accelerate the damping oil to leave the inner cavity 11 and suck the damping oil into the oil collecting tank 14 to prevent the damping oil from hindering the rotation of the eccentric block module.

[0038] In this embodiment, a one-way valve is provided in the oil chamber 13 for preventing the damping oil from flowing downward, and a one-way valve is provided at the bottom of the oil collecting tank 14 for preventing the damping oil from flowing upward, thereby ensuring the deceleration effect of the damping oil on the eccentric block module when in the inner chamber 11.

[0039] In this embodiment, a wiring groove 19 is provided on the top of the barrel 1, a terminal 20 is provided in the wiring groove 19, and a cable opening communicating with the inside of the barrel 1 is provided at the bottom.

[0040] A cable sealing joint 22 is provided on the side of the top of the barrel 1 . The cable sealing joint 22 extends into the wiring groove 19 and is electrically connected to the terminal post 20 .

[0041] The bottom of the terminal 20 is electrically connected to the stator 2, the electromagnet 9 and the micro oil pump 10 through the cable opening. A terminal cover 21 is installed on the top of the terminal slot 19 to prevent the terminal slot 19 from communicating with the outside world. An O-ring is provided at the connection between the terminal cover 21 and the terminal slot 19, and the joint surface between the two is a flameproof joint surface.

[0042] After the terminal 20 is electrically connected to the stator 2, the electromagnet 9 and the micro oil pump 10, epoxy resin 23 is poured into the bottom of the wiring slot 19 to seal the cable opening to prevent the interior of the barrel 1 from communicating with the outside.

[0043] In this embodiment, the brake cover 8 is divided into two parts, an upper part and an lower part, which are detachably sealed and connected to each other, so as to facilitate the adjustment of the eccentric block module and the brake assembly.

[0044] In another embodiment, a micro oil pump 10 is provided inside the oil collecting tank 14 and a plurality of one-way valves are provided step by step in the oil chamber 13 to prevent the damping oil from flowing downward, and a one-way valve is provided at the bottom opening to prevent the damping oil from flowing upward. When the motor is started again, the electromagnet 9 is energized to close the top opening and open the bottom opening, and the damping oil in the inner cavity 11 flows downward into the oil chamber 13 under the influence of gravity. Since the motor vibrates continuously when working, the damping oil in the oil chamber 13 moves upward through the one-way valve under the influence of the vibration, and cannot flow downward due to the obstruction of the one-way valve, and continues to move upward at the next vibration, thereby moving upward step by step into the oil collecting tank 14.

[0045] The above descriptions are only preferred embodiments of the present invention, not all embodiments. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, belong to the protection scope of the present invention.

Claims

1. A short-axis symmetrical explosion-proof vibration motor, characterized in that: It comprises a barrel (1), a stator (2) and a rotor (3); The stator (2) is arranged inside the barrel (1), and the rotor (3) is sleeved inside the stator (2) and is clearance-matched with the stator (2); The two sides of the rotor (3) are sequentially sleeved with a rotor ring (4), a bearing (5) and an eccentric block module; the bearing (5) is mounted on a bearing seat (6) connected to the barrel (1); a portion of the bearing seat (6) is located inside the barrel (1) and a portion is located outside the barrel (1); explosion-proof covers (7) are also provided at both ends of the barrel (1); the eccentric block module and a portion of the bearing seat (6) are located inside the explosion-proof covers (7); A brake assembly is also provided in the explosion-proof cover (7), and the brake assembly is used to stop the rotation of the eccentric block module; the brake assembly comprises a brake cover (8), an electromagnet (9) and a micro oil pump (10); The brake cover (8) is provided with an inner cavity (11) inside, and an opening and closing cavity (12) and an oil cavity (13) are sequentially provided on both sides of the inner cavity (11), and a top opening and a bottom opening are provided on the top and bottom of the inner cavity (11) respectively, the top of the top opening is communicated with the oil cavity (13), and the two sides are communicated with the opening and closing cavity (12), the bottom of the bottom opening is communicated with the oil cavity (13), and the two sides are communicated with the opening and closing cavity (12), and an oil collecting groove (14) is provided at the connection between the oil cavity (13) and the top opening; The electromagnet (9) is arranged in the middle of the top opening and is electrically connected to the stator (2); the micro oil pump (10) is arranged in the oil collecting trough (14) and is connected to the bottom of the oil cavity (13) through a pipeline; the micro oil pump (10) is electrically connected to the stator (2); the oil cavity (13) and the opening and closing cavity (12) are both arc-shaped; an arc-shaped slider (15) adapted to the size of the opening and closing cavity (12) is arranged in the opening and closing cavity (12); the bottom end of the arc-shaped slider (15) is a magnet; damping oil is arranged in the oil collecting trough (14); The eccentric block module is arranged inside the inner cavity (11), the rotor (3) extends into the inner cavity (11) and is connected to the eccentric block module, and the brake cover (8) is sealedly connected to the rotor (3).

2. A short-axis symmetrical explosion-proof vibration motor as claimed in claim 1, characterized in that: A one-way valve is arranged in the oil chamber (13), and the one-way valve is used to prevent the damping oil from flowing downward.

3. The short-axis symmetrical explosion-proof vibration motor according to claim 1, characterized in that: A bearing baffle (16) is connected to the outer side of the rotor ring (4), and the bearing baffle (16) is used to fix the bearing (5) on the bearing seat (6).

4. The short-axis symmetrical explosion-proof vibration motor according to claim 1, characterized in that: The eccentric block module comprises an active eccentric block (17) and a driven eccentric block (18), the active eccentric block (17) being provided with a plurality of threaded holes, the driven eccentric block (18) being provided with a plurality of through holes, the positions of the threaded holes and the through holes corresponding to different rotation angles between the active eccentric block (17) and the driven eccentric block (18).

5. The short-axis symmetrical explosion-proof vibration motor according to claim 1, characterized in that: The top of the barrel (1) is provided with a wiring slot (19), a wiring post (20) is provided in the wiring slot (19), the bottom of the wiring post (20) is electrically connected to the stator (2), the electromagnet (9) and the micro oil pump (10), and the top of the wiring slot (19) is connected with a wiring cover (21), and the wiring cover (21) is used to prevent the wiring slot (19) from communicating with the outside.

6. A short-axis symmetrical explosion-proof vibration motor as claimed in claim 5, characterized in that: A cable sealing joint (22) is provided on the side of the top of the barrel (1), and the cable sealing joint (22) extends into the wiring groove (19) and is electrically connected to the wiring post (20).

7. The short-axis symmetrical explosion-proof vibration motor according to claim 5, characterized in that: The bottom of the wiring slot (19) is provided with a cable opening, through which a cable connecting the terminal (20) and the stator (2), the electromagnet (9), and the micro oil pump (10) passes; the bottom of the wiring slot (19) is also provided with epoxy resin (23), and the epoxy resin (23) is used to seal the cable opening through which the cable is passed.

Images