Lightweight high-efficiency heat dissipation frame structure motor

Abstract

The utility model discloses a kind of lightweight high-efficiency heat dissipation frame type structure motor, including base assembly, front cover assembly, rear cover assembly, rotor and stator. Motor base is the frame structure of inner circle outer square, adopts cast iron integrated casting or steel sheet tailor-welded blanking formation, its rear end is evenly distributed with air inlet;Front end cover and rear end cover are connected in the front and rear of motor base respectively;Rotor is rotatably connected on the central axis of front end cover and rear end cover by bearing, and there is radiating fan blade in the rear end of rotor coaxially connected;Stator is fixed in the inside of motor base coaxially, and surrounds the outer periphery of rotor. The design forms forced ventilation air current by rear end radiating fan blade, after entering motor inside after air inlet, steel wire shroud and filter screen filter core purification, carry out efficient heat exchange and discharge high-temperature air. Compared with traditional motor, the heat dissipation effect of the design is improved by about 50%, and the whole machine is reduced by about 40%. Motor in the utility model realizes the multiple advantages of lightweight and high-efficiency heat dissipation.

Description

Technical Field

[0001] This utility model relates to the technical field of electric motors, specifically to a lightweight, high-efficiency heat dissipation frame-type electric motor. Background Technology

[0002] With the rapid development of industrial automation, intelligent manufacturing, and energy-saving technologies, medium and low voltage electric motors, as core power devices, are widely used in various industrial scenarios such as fans, pumps, conveying equipment, and logistics sorting systems. In actual operation, motors not only need to have good electromagnetic performance, but also require higher standards for lightweight structure, heat dissipation efficiency, operational reliability, and ease of maintenance.

[0003] Traditional motors mostly use a single cast iron frame, which, while offering high structural strength, suffers from drawbacks such as heavy weight, material waste, limited heat dissipation paths, and low ventilation efficiency. Especially under high loads or continuous operation, the stator windings and core temperature rise significantly. Poor heat dissipation can easily lead to insulation aging, efficiency loss, and even motor burnout. Furthermore, existing motors generally rely on external fans for cooling, increasing energy consumption and structural complexity, and their bulky design hinders equipment integration and energy efficiency improvements.

[0004] In recent years, lightweight frame structures have gradually gained attention, but most designs still focus on simple weight reduction, failing to achieve synergistic optimization of structural stiffness, efficient heat dissipation, reliable stator fixation, and intelligent sensing. Especially for open-frame structures, ensuring mechanical strength and preventing component loosening due to operational vibration while reducing weight remains a technical challenge.

[0005] Regarding stator mounting methods, traditional processes often employ thermally fitted interference fits, which are difficult to assemble and disassemble, making it hard to meet the needs of modular production and rapid maintenance. Furthermore, most motors lack real-time monitoring and intelligent feedback mechanisms for bearing temperature, resulting in opaque operating status, weak fault warning capabilities, and impacting overall system reliability.

[0006] Therefore, there is an urgent need for a new type of electric motor structure that can achieve lightweight design, and has the comprehensive advantages of efficient self-fan cooling, intelligent temperature control, convenient maintenance and high protection performance, so as to meet the development needs of modern industry for energy-saving, reliable and intelligent drive devices. Utility Model Content

[0007] The purpose of this invention is to provide a lightweight, high-efficiency heat dissipation frame-type electric motor to solve the above-mentioned defects caused by the prior art.

[0008] A lightweight, high-efficiency heat dissipation frame-type electric motor, comprising: The base assembly includes a motor base, which is a frame structure with an inner circle and an outer square, and is made of cast iron or welded steel plates. A front cover assembly, including a front end cover, the front end cover being connected to the front end of a motor housing; A rear cover assembly, including a rear end cover, the rear end cover being connected to the rear end of the motor housing; The rotor is rotatably connected to the central axis of the front and rear covers via bearings, and a cooling fan blade is coaxially connected to the rear end of the rotor. The stator is coaxially fixed inside the motor frame and surrounds the outer circumference of the rotor.

[0009] Preferably, the motor base includes a pair of coaxially arranged positioning rings, and multiple sets of positioning strips are connected between the outer walls of the two positioning rings at intervals. The positioning strips in adjacent sets are arranged perpendicular to each other, and each set contains multiple parallel positioning strips. Multiple reinforcing ribs are connected between adjacent positioning strips. In the intersection area of ​​adjacent sets, adjacent positioning strips are connected by a fixing plate. A pair of screws is threaded to the middle of the fixing plate, and a pair of screws is threaded to both sides. The inner end of the screw is connected to a locking strip, and the inner end of the screw abuts against the outer wall of the locking strip. The inner wall of the locking strip is provided with an arc-shaped clamping surface.

[0010] Preferably, the rear end of the motor base has air inlets evenly distributed, each reinforcing rib has multiple ventilation holes, the upper and lower sides of the motor base are respectively connected to an upper guard plate and a lower guard plate, the left and right sides are symmetrically connected to side guard plates, the side guard plates are connected to the upper guard plate and corner guard plates, the front end of the side guard plate is provided with an air outlet, and an air outlet mask is provided on its outer side.

[0011] Preferably, a bearing cover plate 1 is coaxially connected to the outer side of the front end cover, and a bearing oil injection pipe 1 and a temperature sensor 1 are connected to the bearing cover plate 1; a bearing cover plate 2 is coaxially connected to the outer side of the rear end cover, and a bearing oil injection pipe 2 and a temperature sensor 2 are connected to the bearing cover plate 2.

[0012] Preferably, a sensor junction box and a motor junction box are respectively provided on the left and right corner guards. The sensor junction box integrates a controller, which is electrically connected to temperature sensor one and temperature sensor two respectively.

[0013] Preferably, a tri-color lamp is connected to the front end of the motor base via a fixed base, and the controller is electrically connected to the tri-color lamp.

[0014] Preferably, the front and rear ends of the motor base are respectively connected to a front cover protective cover and a rear cover protective cover, and the outer end face of the rear cover protective cover is provided with a wire guard, and a filter screen filter element is installed inside it.

[0015] Preferably, a number of lifting rings are evenly distributed on the top of the motor base.

[0016] Compared with the prior art, the present invention has the following advantages: 1. Lightweight structure and high material utilization rate The machine adopts an open frame structure of "positioning ring + positioning strip + reinforcing rib" to replace the traditional solid cast iron base. This significantly reduces weight while ensuring sufficient rigidity and strength, with the overall machine weight reduced by approximately 40%. This lowers material costs and transportation energy consumption, aligning with energy conservation and emission reduction trends. Furthermore, the machine tool with a welded steel plate structure requires less machining, avoiding the defects of rapid tool wear and poor dimensional accuracy caused by intermittent cutting of steel parts.

[0017] 2. Highly efficient self-fan cooling with excellent heat dissipation performance. The rotor utilizes integrated cooling fan blades at the rear end to form an active airflow duct. Cool air enters from the rear end and exits from the front end, flowing through ventilation holes and the frame surface to achieve sufficient heat exchange between the stator and the frame. Compared to traditional motors, the heat dissipation effect is improved by approximately 50%, effectively reducing temperature rise, extending insulation life, and eliminating the need for an external fan, thus saving space and energy.

[0018] 3. The stator is reliably installed and has strong anti-loosening performance. The stator is radially clamped by multiple sets of locking bars, combined with an arc-shaped clamping surface design, achieving uniform force distribution and deformation-resistant fixation. This structure not only ensures assembly accuracy and heat conduction performance, but also effectively prevents the stator from loosening or shifting under vibration conditions, ensuring long-term operational stability.

[0019] 4. Intelligent status monitoring ensures safe and reliable operation. Equipped with dual temperature sensors and a controller, it enables real-time monitoring of the front and rear bearing temperatures; combined with a three-color indicator light, it provides visual prompts of the operating status, and features over-temperature warning and automatic protection functions, thereby improving the equipment's intelligence level and operational safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall assembly of this utility model.

[0021] Figure 2 This is a schematic diagram of the overall explosion structure of this utility model.

[0022] Figure 3 A schematic diagram of the overall assembly of the base assembly.

[0023] Figure 4 This is a schematic diagram of the overall explosion of the base assembly.

[0024] Figure 5 This is a three-dimensional structural diagram of the motor base.

[0025] Figure 6 This is a schematic diagram of the overall side view of the motor base.

[0026] Figure 7 for Figure 6 A sectional view of section AA in the middle.

[0027] Figure 8 for Figure 6 Sectional view of section BB.

[0028] Figure 9 A schematic diagram of the overall assembly of the front cover assembly.

[0029] Figure 10 This is a structural diagram of the front cover assembly after an explosion.

[0030] Figure 11 A schematic diagram of the overall assembly of the back cover component.

[0031] Figure 12 This is a schematic diagram of the structure of the back cover assembly after an explosion.

[0032] Figure 13 A schematic diagram of the overall assembly of another similar electric motor.

[0033] Figure 14 This is a schematic diagram of the motor frame of another similar electric motor.

[0034] in: 10-Base assembly; 101-Motor base; 101a-Air inlet; 1011-Positioning ring; 1012-Positioning strip; 1013-Reinforcing rib; 1013a-Ventilation hole; 1014-Fixing plate; 1015-Screw one; 1016-Screw two; 1017-Locking strip; 102-Upper guard plate; 103-Side guard plate; 103a-Air outlet; 104-Lower guard plate; 105-Corner guard plate; 106-Air outlet mask; 107-Sensor junction box; 108-Motor junction box; 109-Tricolor light; 110-Fixing base; 111-Lifting ring; 20-Front cover assembly; 201-Front end cover; 202-Bearing cover plate one; 203-Bearing oil injection pipe one; 204-Temperature sensor one; 205-Front end cover protective cover; 30-Rear cover assembly; 301-Rear end cover; 302-Bearing cover plate II; 303-Bearing oil injection pipe II; 304-Temperature sensor II; 305-Rear end cover protective cover; 306-Cooling fan blade; 307-Steel wire guard; 308-Filter screen element; 40-rotor; 50-Stator. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0036] like Figures 1 to 12 As shown, a lightweight, high-efficiency heat dissipation frame-type electric motor includes: The base assembly 10 includes a motor base 101, which is a frame structure with an inner circle and an outer square, and is made of cast iron or welded steel plates. The front cover assembly 20 includes a front cover 201, which is connected to the front end of the motor base 101; The rear cover assembly 30 includes a rear end cover 301, which is connected to the rear end of the motor base 101; The rotor 40 is rotatably connected to the central axis of the front end cover 201 and the rear end cover 301 via bearings, and a heat dissipation fan blade 306 is coaxially connected to the rear end of the rotor 40. The stator 50 is coaxially fixed inside the motor frame 101 and surrounds the outer circumference of the rotor 40.

[0037] In this embodiment, the motor base 101 includes a pair of coaxially arranged positioning rings 1011. Multiple sets of positioning strips 1012 are spaced apart between the outer walls of the two positioning rings. Adjacent sets of positioning strips 1012 are perpendicular to each other. Each set contains multiple parallel positioning strips 1012. Multiple reinforcing ribs 1013 connect adjacent positioning strips 1012 to enhance structural rigidity and overall stability. In the intersection area of ​​adjacent sets, adjacent positioning strips 1012 are connected by a fixing plate 1014. A pair of screws 1015 are threaded in the middle of 014, and a pair of screws 1016 are threaded on both sides. The inner end of screw 1015 is connected to a locking strip 1017, and the inner end of screw 1016 abuts against the outer wall of locking strip 1017. By adjusting screws 1015 and 1016, locking strip 1017 can be driven to move radially, clamping or releasing the stator 50. The inner wall of locking strip 1017 has an arc-shaped clamping surface that fits snugly against the outer circle of the stator core, ensuring uniform contact during clamping and preventing deformation. The motor base 101 is made of cast iron or welded from steel plates, forming a lightweight frame structure with an inner circle and outer square. This design, while meeting the motor's rigidity, strength, and functional requirements, significantly optimizes ventilation and heat dissipation performance, improving heat dissipation by approximately 50% compared to traditional motors. It also eliminates the need for an external heat dissipation structure, reducing the overall weight by approximately 40%. The stator 50 is securely installed between the two positioning rings 1011 with an interference fit to ensure assembly accuracy and heat conduction performance. At the same time, multiple circumferentially distributed locking bars 1017 apply a uniform radial clamping force to the stator 50, effectively preventing the stator 50 from loosening or shifting under motor vibration conditions, thus ensuring long-term operational reliability. In this embodiment, air inlets 101a are evenly distributed at the rear end of the motor base 101, and multiple ventilation holes 1013a are provided on each reinforcing rib 1013. An upper guard plate 102 and a lower guard plate 104 are respectively connected to the upper and lower sides of the motor base 101, and side guard plates 103 are symmetrically connected to the left and right sides. Corner guard plates 105 are connected between the side guard plates 103 and the upper guard plate 102. An air outlet 103a is provided at the front end of the side guard plate 103, and an air outlet mask 106 is provided on its outer side to guide the directional discharge of hot air. Cold air first enters the interior of the motor base 101 through the air inlet 101a. The cold air then passes through the ventilation holes 1013a. During this process, the cold air undergoes sufficient heat exchange with the heated motor base 101 and stator 50, absorbing heat to form hot air, which is finally discharged through the air outlet 103a.

[0038] In this embodiment, a bearing cover plate 202 is coaxially connected to the outer side of the front cover 201, and a bearing oil injection pipe 203 and a temperature sensor 204 are connected to the bearing cover plate 202. A bearing cover plate 302 is coaxially connected to the outer side of the rear cover 301, and a bearing oil injection pipe 303 and a temperature sensor 304 are connected to the bearing cover plate 302. The bearing oil injection pipe 203 is used to add grease to the front bearing, and the temperature sensor 204 is used to monitor the temperature of the front bearing in real time. The bearing oil injection pipe 303 is used to add grease to the rear bearing, and the temperature sensor 304 is used to monitor the temperature of the rear bearing in real time.

[0039] In this embodiment, sensor junction boxes 107 and motor junction boxes 108 are respectively provided on the left and right corner guards 105. The sensor junction box 107 integrates a controller, which is electrically connected to temperature sensor 204 and temperature sensor 304 respectively, for receiving temperature signals and implementing over-temperature alarm or automatic protection functions. The sensor junction box 107 is mainly used to connect and protect the cable connection between the sensors and the control system, ensuring the stability and reliability of signal transmission. The motor junction box 108 is a device specifically designed for electric motors, mainly used to connect the internal windings of the motor to the external power supply and control system cables.

[0040] In this embodiment, a tri-color light 109 is connected to the front end of the motor base 101 via a fixing seat 110. The controller is electrically connected to the tri-color light 109 and is used to indicate the motor operating status: green indicates normal operation; yellow indicates standby or warning; and red indicates fault or shutdown.

[0041] In this embodiment, the front end cover 205 and the rear end cover 305 are respectively connected to the front and rear ends of the motor base 101. The outer end face of the rear end cover 305 is provided with a wire guard 307, and a filter screen element 308 is installed inside it to prevent external dust from entering the heat dissipation air duct and to protect the heat dissipation fan blades 306.

[0042] In this embodiment, a plurality of lifting rings 111 are evenly distributed on the top of the motor base 101. These rings are used for lifting and transporting the motor, ensuring balance and operational safety.

[0043] Working principle of a lightweight, high-efficiency heat dissipation frame-type electric motor: When the motor is running normally, the rotor 40 drives the cooling fan blades 306 at the rear end to rotate synchronously, thereby forming a forced ventilation airflow. The ambient temperature air first passes through the air inlet 305a on the rear end cover 305, and then passes through the wire mesh cover 307 and the filter element 308 in sequence before entering the rear end cover 305, effectively removing dust and impurities from the air, ensuring that the air entering the motor is clean and extending the service life of the internal components.

[0044] Purified air enters the internal space through the air inlet 101a at the rear end of the motor housing 101 and flows through the ventilation holes 1013a on the reinforcing rib 1013, forming a multi-path airflow channel inside the motor housing. The cold air fully exchanges heat with the heated motor housing 101 and stator 50, absorbing heat and becoming hot air, which is finally discharged from the air outlet 103a on the front side guard plate 103. The air outlet mask 106 guides the air to be discharged in a directional manner, achieving efficient self-fan cooling.

[0045] This ventilation and heat dissipation structure design not only improves the overall heat dissipation efficiency of the motor by about 50% compared to traditional motors, but also reduces the weight of the whole machine by about 40% by removing external additional heat dissipation structures, meeting the development needs of lightweight and energy-saving.

[0046] Therefore, the above-disclosed embodiments are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A lightweight, high-efficiency heat-dissipating frame-type electric motor, characterized in that, include: The base assembly (10) includes a motor base (101), which is a frame structure with an inner circle and an outer square, and is made of cast iron or welded steel plates. The front cover assembly (20) includes a front cover (201) which is connected to the front end of the motor housing (101); The rear cover assembly (30) includes a rear end cover (301) connected to the rear end of the motor housing (101); The rotor (40) is rotatably connected to the central axis of the front end cover (201) and the rear end cover (301) via bearings, and a heat dissipation fan blade (306) is coaxially connected to the rear end of the rotor (40). The stator (50) is coaxially fixed inside the motor frame (101) and surrounds the outer periphery of the rotor (40).

2. The lightweight, high-efficiency heat dissipation frame structure motor according to claim 1, characterized in that, The motor base (101) includes a pair of coaxially arranged positioning rings (1011). Multiple sets of positioning strips (1012) are connected between the outer walls of the two positioning rings at intervals. The positioning strips (1012) of adjacent sets are arranged perpendicularly to each other. Each set contains multiple positioning strips (1012) that are parallel to each other. Multiple reinforcing ribs (1013) are connected between adjacent positioning strips (1012). In the intersection area of ​​adjacent sets, adjacent positioning strips (1012) are connected by a fixing plate (1014). A pair of screws (1015) are threadedly connected to the middle of the fixing plate (1014), and a pair of screws (1016) are threadedly connected to both sides. The inner end of the screw (1015) is connected to a locking strip (1017). The inner end of the screw (1016) abuts against the outer wall of the locking strip (1017). The inner wall of the locking strip (1017) is provided with an arc-shaped clamping surface.

3. The lightweight, high-efficiency heat dissipation frame structure electric motor according to claim 2, characterized in that, The rear end of the motor base (101) is evenly distributed with air inlets (101a), and each reinforcing rib (1013) is provided with multiple ventilation holes (1013a). The upper and lower sides of the motor base (101) are respectively connected with an upper guard plate (102) and a lower guard plate (104), and the left and right sides are symmetrically connected with side guard plates (103). The side guard plates (103) and the upper guard plate (102) are connected with corner guard plates (105). The front end of the side guard plate (103) is provided with an air outlet (103a), and an air outlet mask (106) is provided on its outer side.

4. A lightweight, high-efficiency heat-dissipating frame-type electric motor according to claim 3, characterized in that, The outer side of the front cover (201) is coaxially connected to a bearing cover plate 1 (202), and a bearing oil injection pipe 1 (203) and a temperature sensor 1 (204) are connected on the bearing cover plate 1 (202); the outer side of the rear cover (301) is coaxially connected to a bearing cover plate 2 (302), and a bearing oil injection pipe 2 (303) and a temperature sensor 2 (304) are connected on the bearing cover plate 2 (302).

5. A lightweight, high-efficiency heat-dissipating frame-type electric motor according to claim 4, characterized in that, Sensor junction boxes (107) and motor junction boxes (108) are respectively provided on the corner guards (105) on the left and right sides. The sensor junction box (107) integrates a controller, which is electrically connected to temperature sensor one (204) and temperature sensor two (304) respectively.

6. A lightweight, high-efficiency heat-dissipating frame-type electric motor according to claim 5, characterized in that, The front end of the motor base (101) is connected to a tri-color lamp (109) via a fixed base (110), and the controller is electrically connected to the tri-color lamp (109).

7. A lightweight, high-efficiency heat-dissipating frame-type electric motor according to claim 1, characterized in that, The front and rear ends of the motor base (101) are respectively connected to a front cover protective cover (205) and a rear cover protective cover (305). The outer end face of the rear cover protective cover (305) is provided with a wire guard (307), and a filter screen element (308) is installed inside it.

8. A lightweight, high-efficiency heat-dissipating frame-type electric motor according to claim 1, characterized in that, The top of the motor base (101) has several lifting rings (111) evenly distributed.

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