Permanent magnet motor and high-altitude operation application

Abstract

The permanent magnet motor comprises a shell, a vertical partition plate is arranged in the shell, the partition plate divides a cavity of the shell into a first cavity and a second cavity, the center of the partition plate protrudes outwards to form a fixing frame, multiple sets of air inlet holes are formed in the peripheral surface of the fixing frame, and the air inlet holes are communicated with the first cavity and the second cavity. According to the device, after gas in the shell enters the interior of the fixed cylinder through the communicating pipe, and the pressure in the fixed cylinder is larger than that of the moving part, the gas in the fixed cylinder can gradually push the moving part to move, so that the gas in the fixed cylinder is prevented from entering the fixed cylinder, and the gas in the fixed cylinder is prevented from entering the fixed cylinder; the moving part drives the cleaning part to move on the surface of the filter screen, so that the surface of the filter screen is cleaned, and the ventilation quantity is ensured.

Description

Technical Field

[0001] The present invention relates to the field of motor technology, and in particular to permanent magnet motors and aerial work applications. Background Art

[0002] Permanent magnet motors are widely used in various industrial and civil fields due to their high efficiency, high power density and compact structure. In aerial operations, permanent magnet motors are often used in the drive systems of cranes, aerial work vehicles, drones and other equipment.

[0003] In order to ensure the internal temperature of the permanent magnet motor, a cooling fan is generally set to cool the inside of the motor, and the dust entering the motor is intercepted by a filter. However, since there is usually a lot of dust and dirt in the high-altitude working environment, a large amount of dust and dirt will be attached to the filter, which will seriously affect the ventilation volume, thereby reducing the heat dissipation effect of the motor and not meeting practical needs. Summary of the invention

[0004] The present invention aims at the deficiencies in the prior art and provides the following technical solutions:

[0005] Permanent magnet motor, including:

[0006] A shell, wherein a vertical partition is arranged in the shell, the partition divides the shell cavity into a first chamber and a second chamber, the center of the partition protrudes outward to form a fixed frame, the outer circumferential surface of the fixed frame is provided with a plurality of groups of air inlet holes, and the circumferential surface of the fixed frame is wrapped with a layer of filter screen covering the air inlet holes;

[0007] A cooling fan is arranged on the inner wall of the fixing frame;

[0008] A motor body is installed in the first chamber;

[0009] A plurality of cleaning components are arranged in the first chamber, wherein the cleaning components include a fixed cylinder arranged on the inner wall of the shell and located between the motor body and the partition, a moving part is movably inserted into one end of the fixed cylinder away from the motor body, the end of the moving part passes through the fixed cylinder and the partition in sequence and extends into the second chamber, a cleaning part is fixedly arranged on one end of the moving part extending to the second chamber, the interior of the fixed cylinder is connected to the air outlet end of the shell through a connecting pipe, the gas inside the shell enters the interior of the fixed cylinder through the connecting pipe to push the moving part to move, and the moving part is controlled to drive the cleaning part to move on the surface of the fixed frame to clean the surface of the filter.

[0010] As an improvement of the above technical solution, a water cooling plate is vertically arranged in the first chamber and between the cleaning assembly and the motor body, and a plurality of through holes for gas to pass through are provided on the water cooling plate.

[0011] As an improvement of the above technical solution, the movable part includes a piston slidably arranged inside the fixed cylinder, one end of the piston is fixedly connected to a movable rod, the end of the movable rod away from the piston sequentially penetrates the fixed cylinder and the partition and extends to the interior of the second chamber, the end of the movable rod extending to the interior of the second chamber is fixedly connected to a cleaning part, and a spring is wound on the surface of the movable rod and a section located inside the fixed cylinder.

[0012] As an improvement of the above technical solution, the cleaning member includes an arc-shaped plate installed on the end of the movable rod, and electrostatic dust removal paper is provided on one side of the arc-shaped plate adjacent to the surface of the fixed frame.

[0013] As an improvement of the above technical solution, the cleaning component also includes an annular tube, which is connected to multiple groups of fixed cylinders. Multiple groups of branch pipes are arranged on the annular tube in the direction of the fixed frame. Multiple groups of nozzles are provided on the branch pipes, and the positions and quantities of the nozzles are matched with the air outlets.

[0014] As an improvement of the above technical solution, a support member is arranged between the motor body and the shell, and the support member includes a heat-conducting ring fixed on the motor body, a plurality of groups of petal frames are integrally formed on the circumferential surface of the heat-conducting ring, the inner wall of the shell is fixedly connected to the petal frame, reinforcing ribs are integrally formed between two adjacent groups of the petal frames, and a channel for gas flow is opened in the petal frame.

[0015] As an improvement of the above technical solution, the permanent magnet motor described above is used in the field of aerial work.

[0016] Beneficial effects of the present invention:

[0017] The external air is drawn into the first chamber through the air inlet through the cooling fan. After the gas enters the first chamber, the heat on the surface of the motor body can be taken away. At the same time, the air inside the shell is circulated from right to left under the action of the air outlet, which can improve the heat dissipation efficiency of the motor body. The dust in the air can be intercepted and filtered through the filter. When the gas enters the fixed cylinder through the connecting pipe, when the pressure inside the fixed cylinder is greater than the pressure of the moving part, the gas inside the fixed cylinder will gradually push the moving part to move, so that the moving part drives the cleaning part to move on the surface of the filter, thereby cleaning the surface of the filter to ensure the ventilation volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the overall structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0020] Figure 3For the present invention Figure 1 The enlarged structural diagram at B in the middle;

[0021] Figure 4 It is a structural schematic diagram of the support member of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the cleaning element of the present invention.

[0023] Figure numerals: 10, shell; 11, partition; 12, fixing frame; 121, air inlet; 20, motor body; 30, support; 31, heat-conducting ring; 32, petal frame; 33, reinforcing rib; 40, water-cooling plate; 41, through hole; 50, fixing cylinder; 51, connecting pipe; 52, piston; 53, spring; 54, movable rod; 55, annular tube; 551, branch pipe; 552, nozzle; 56, arc plate; 57, electrostatic dust removal paper; 60, cooling fan. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] Embodiment 1

[0026] A permanent magnet motor comprises: a housing 10, wherein a vertical partition 11 is arranged in the housing 10, wherein the partition 11 divides the housing 10 cavity into a first chamber and a second chamber, wherein the center of the partition 11 protrudes outward to form a fixed frame 12, wherein a plurality of groups of air inlet holes 121 are arranged on the outer circumferential surface of the fixed frame 12, wherein a layer of filter screen covering the air inlet holes 121 is wrapped on the circumferential surface of the fixed frame 12; a cooling fan 60 is arranged on the inner wall of the fixed frame 12; a motor body 20 is installed in the first chamber; a plurality of cleaning components are arranged in the first chamber, wherein the cleaning components include a filter screen arranged in the housing 10 and a fixed cylinder 50 is disposed on the inner wall of the shell 10 and between the motor body 20 and the partition 11. A moving part is movably inserted at one end of the fixed cylinder 50 away from the motor body 20. The end of the moving part sequentially passes through the fixed cylinder 50 and the partition 11 and extends into the second chamber. A cleaning part is fixedly arranged at one end of the moving part extending into the second chamber. The interior of the fixed cylinder 50 is connected with the air outlet end of the shell 10 through a connecting pipe 51. The gas inside the shell 10 enters the fixed cylinder 50 through the connecting pipe 51 to push the moving part to move. The moving part is controlled to drive the cleaning part to move on the surface of the fixed frame 12 to clean the surface of the filter.

[0027] When working at high altitude, start the cooling fan 60, and the cooling fan 60 draws external air into the first chamber through the air inlet 121. After the gas enters the first chamber, it can take away the heat on the surface of the motor body 20. At the same time, under the action of the air outlet, the air inside the shell 10 circulates from right to left, which can improve the heat dissipation efficiency of the motor body 20. The dust in the air can be intercepted and filtered through the filter. When the gas inside the shell enters the fixed cylinder 50 through the connecting pipe 51, when the pressure inside the fixed cylinder 50 is greater than the pressure of the moving part, the gas inside the fixed cylinder 50 will gradually push the moving part to move, so that the moving part drives the cleaning part to move on the surface of the filter, thereby cleaning the surface of the filter, ensuring the ventilation volume, thereby ensuring the internal temperature of the permanent magnet motor, and avoiding the problem of local overheating and damage. The second chamber can protect the cleaning part to prevent the external environment from interfering with the cleaning part, and a one-way valve is arranged inside the connecting pipe 51.

[0028] In order to improve the heat dissipation effect of the motor body 20, refer to Figure 1 A water cooling plate 40 is vertically arranged in the first chamber and between the cleaning assembly and the motor body 20. The water cooling plate 40 is provided with a plurality of through holes 41 for gas to pass through. The water cooling plate 40 is filled with coolant. When the gas passes through the through holes 41, heat is exchanged with the water cooling plate 40 to cool the gas. Furthermore, the gas around the motor body 20 can be evenly distributed through the plurality of through holes 41, thereby effectively avoiding the problem of local overheating.

[0029] In one embodiment, reference Figure 1 as well as Figure 2 The movable member includes a piston 52 slidably disposed inside the fixed cylinder 50, one end of the piston 52 is fixedly connected to a movable rod 54, the end of the movable rod 54 away from the piston 52 sequentially penetrates the fixed cylinder 50 and the partition 11 and extends to the inside of the second chamber, the end of the movable rod 54 extending to the inside of the second chamber is fixedly connected to a cleaning member, and a section of the surface of the movable rod 54 located inside the fixed cylinder 50 is wound with a spring 53;

[0030] Specifically, when the gas inside the shell 10 enters the fixed cylinder 50 through the connecting pipe 51, when the pressure inside the fixed cylinder 50 is greater than the pressure of the spring 53, the piston 52 will be pushed to move. The piston 52 drives the cleaning part to move through the movable rod 54 to clean the surface of the filter, thereby realizing automatic and periodic cleaning of the surface of the filter.

[0031] In one embodiment, reference Figure 5 The cleaning member includes an arc-shaped plate 56 installed at the end of the movable rod 54 , and an electrostatic dust removal paper 57 is provided on one side of the arc-shaped plate 56 adjacent to the surface of the fixed frame 12 .

[0032] Specifically, the arc plate 56 is adapted to the shape of the surface of the fixed frame 12, and the electrostatic dust removal paper 57 can absorb dust and impurities on the surface of the filter. After a period of time, the old electrostatic dust removal paper 57 can be torn off to expose new electrostatic dust removal paper 57.

[0033] In one embodiment, reference Figure 1 as well as Figure 3 The cleaning assembly further includes an annular tube 55, the annular tube 55 is connected to the plurality of fixed tubes 50, a plurality of branch tubes 551 are arranged on the annular tube 55 and in the direction of the fixed frame 12, and a plurality of nozzles 552 are arranged on the branch tube 551, the positions and quantities of which are matched with the air outlet holes 121;

[0034] When the piston 52 moves to one side of the annular tube 55, the gas inside the fixed cylinder 50 enters the annular tube 55, and the gas entering the annular tube 55 enters the branch pipe 551, and then is ejected through the nozzle 552. The gas ejected by the nozzle 552 directly rushes to the inside of the air inlet hole 121, and all the fine dust or impurities accumulated therein or on the filter screen for a long time are engulfed and sprayed toward the outer surface of the fixed frame 12. At this time, after the gas inside the fixed cylinder 50 enters the annular tube 55, the piston 52 is pushed to return to the initial position under the action of the restoring elastic force of the spring 53, so that the piston 52 drives the cleaning member to move toward the direction of the motor body 20 through the movable rod 54. Since the gas ejected by the nozzle 552 has blown the impurities away from their original position, the moving cleaning member will absorb and clean the dust one by one at this time, thereby improving the cleaning effect of the filter screen surface. Through the synergistic effect of gas injection and mechanical cleaning members, the dust and impurities at the filter screen position can be effectively cleaned, and the filter screen surface can be periodically and automatically cleaned.

[0035] In one embodiment, reference Figure 1 as well as Figure 4 A support member 30 is provided between the motor body 20 and the shell 10, and the support member 30 includes a heat-conducting ring 31 fixed on the motor body 20, and a plurality of petal frames 32 are integrally formed on the circumferential surface of the heat-conducting ring 31. The inner wall of the shell 10 is fixedly connected to the petal frames 32, and reinforcing ribs 33 are integrally formed between two adjacent groups of the petal frames 32, and a channel for gas flow is opened in the petal frames 32.

[0036] The heat-conducting ring 31 can transfer the heat from the motor body 20. Through the channel of the petal frame 32, the gas and the petal frame 32 can be released, thereby increasing the heat dissipation area and improving the heat dissipation effect. The reinforcing ribs 33 can increase the supporting strength of the petal frame 32, effectively avoiding the deformation of the petal frame.

[0037] Embodiment 2

[0038] Application of the permanent magnet motor described in the first embodiment in the field of aerial work.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A permanent magnet motor, characterized in that: include: A shell (10), wherein a vertical partition (11) is arranged inside the shell (10), wherein the partition (11) divides the shell (10) cavity into a first chamber and a second chamber, wherein the center of the partition (11) protrudes outward to form a fixed frame (12), wherein a plurality of groups of air inlet holes (121) are provided on the outer circumferential surface of the fixed frame (12), and a layer of filter screen covering the air inlet holes (121) is wrapped on the circumferential surface of the fixed frame (12); A heat dissipation fan (60) is arranged on the inner wall of the fixing frame (12); A motor body (20) is installed in the first chamber; A plurality of cleaning components are arranged in a first chamber, the cleaning components comprising a fixed cylinder (50) arranged on the inner wall of the shell (10) and located between the motor body (20) and the partition (11), a moving part is movably inserted at one end of the fixed cylinder (50) away from the motor body (20), the end of the moving part sequentially passes through the fixed cylinder (50) and the partition (11) and extends into the second chamber, a cleaning part is fixedly arranged at one end of the moving part extending into the second chamber, the interior of the fixed cylinder (50) is connected to the air outlet end of the shell (10) through a connecting pipe (51), the gas inside the shell (10) enters the interior of the fixed cylinder (50) through the connecting pipe (51) to push the moving part to move, and the moving part is controlled to drive the cleaning part to move on the surface of the fixed frame (12), thereby cleaning the surface of the filter screen.

2. The permanent magnet motor according to claim 1, characterized in that: A water cooling plate (40) is vertically arranged in the first chamber and between the cleaning assembly and the motor body (20), and the water cooling plate (40) is provided with a plurality of groups of through holes (41) for gas to pass through.

3. The permanent magnet motor according to claim 1, characterized in that: The movable member comprises a piston (52) slidably arranged inside the fixed cylinder (50), one end of the piston (52) is fixedly connected to a movable rod (54), the end of the movable rod (54) away from the piston (52) passes through the fixed cylinder (50) and the partition (11) in sequence and extends to the inside of the second chamber, the end of the movable rod (54) extending to the inside of the second chamber is fixedly connected to a cleaning member, and a section of the surface of the movable rod (54) located inside the fixed cylinder (50) is wound with a spring (53).

4. The permanent magnet motor according to claim 3, characterized in that: The cleaning member comprises an arc-shaped plate (56) mounted on the end of the movable rod (54), and electrostatic dust removal paper is arranged on one side of the arc-shaped plate (56) adjacent to the surface of the fixed frame (12).

5. The permanent magnet motor according to claim 1, characterized in that: The cleaning assembly further comprises an annular tube (55), the annular tube (55) being in communication with a plurality of groups of the fixed tubes (50), a plurality of groups of branch tubes (551) being arranged on the annular tube (55) and in a direction toward the fixed frame (12), and a plurality of groups of nozzles (552) being arranged on the branch tubes (551) and being matched in position and number with the air outlet holes (121).

6. The permanent magnet motor according to claim 1, characterized in that: A support member (30) is provided between the motor body (20) and the shell (10), the support member (30) comprising a heat-conducting ring (31) fixed on the motor body (20), a plurality of groups of petal frames (32) integrally formed on the circumferential surface of the heat-conducting ring (31), an inner wall of the shell (10) being fixedly connected to the petal frames (32), reinforcing ribs (33) integrally formed between two adjacent groups of the petal frames (32), and a channel for gas flow being provided in the petal frames (32).

7. Application of the permanent magnet motor according to claim 1 in the field of aerial work.

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