Intelligent cooling control type high-power gear motor and control method

Abstract

The invention discloses an intelligent cooling control type high-power gear motor and a control method, and relates to the technical field of gear motors. Through cooperation of the electrostatic pipe and the cleaning rod, when the gear motor works, cooling liquid flows into the cooling cavity, external airflow flows in from the electrostatic pipe, after the airflow enters the electrostatic pipe, the cooling liquid cools the airflow, and dust and impurities in the airflow can be adsorbed to the cleaning rod and the inner wall of the electrostatic pipe; and dust and impurities are blocked by the hard brush, so that the impurities in the air flow are prevented from flowing into the fan cover. According to the real-time changes of the air flow inlet temperature and the motor surface temperature and the difference relation between the air flow inlet temperature and the motor surface temperature and the corresponding reference values, the liquid cooling supply rate is regulated and controlled more linearly and adaptively, the relation between the cooling demand and power output is coordinated efficiently, and the cooling efficiency is improved. High-efficiency and energy-saving air cooling and liquid cooling common cooling and heat dissipation of the gear motor are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of reduction motors, and in particular to an intelligent cooling controlled high-power reduction motor and a control method thereof. Background Art

[0002] A reduction motor is an integration of a reducer and a motor. This integration is also commonly called a gear motor or gear motor. It is usually assembled by a professional reducer manufacturer and supplied as a set with a motor. During the meshing transmission of the gear set, the integration is prone to generate heat during long-term operation. High temperature can easily damage the components in the reducer and motor, thereby reducing the service life of the components. Due to its high efficiency, high load capacity and excellent reduction ratio characteristics, reduction motors are widely used in high-precision and high-performance applications such as robot arms, precision instruments, and space probes.

[0003] When working in a harsh environment, there are a lot of dust and impurities in the outside air. When the heat dissipation motor is in use, the fan cover of the motor will inhale dust, and the dust and impurities will accumulate inside the fan cover, which will lead to reduced heat dissipation efficiency of the motor, poor heat dissipation effect, and reduced service life.

[0004] The existing solution is to clean the reduction motor regularly. When the reduction motor is not working, the fan cover of the reduction motor is removed, and the inside of the fan cover is cleaned. After cleaning, the protective cover is installed. This method is not only troublesome to clean the protective cover, but also requires the fan cover to be removed during cleaning, which delays the normal use of the reduction motor.

[0005] In order to prevent a large amount of dust from entering the fan cover, liquid cooling is currently used to dissipate heat from the reduction motor. However, this method has many requirements on the layout and amount of liquid cooling in the motor, and has limitations in terms of motor structure design, layout, use cost, and effect.

[0006] In the face of the above situation, how to effectively solve the problem of ensuring the air intake and cooling capacity of the fan cover when the reduction motor works in a harsh environment, while preventing a large amount of external dust and impurities from entering the fan cover of the reduction motor, and conveniently and efficiently cleaning the dust and impurities sucked into the fan cover, has become a problem that needs to be solved. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides an intelligent cooling controlled high-power reduction motor and control method, which not only ensures the air intake and cooling capacity of the fan cover, but also prevents a large amount of external dust and impurities from entering the fan cover of the reduction motor, and can conveniently and efficiently clean the dust and impurities sucked into the fan cover.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] An intelligent cooling controlled high-power reduction motor comprises a fan cover, rotating blades in the fan cover, a motor body and a second temperature sensor on the surface of the motor body. The outside of the motor body is evenly provided with heat dissipation fins. The fan cover comprises an outer end panel, an inner end panel, a cooling cavity between the outer end side and the inner end panel, and an airflow cavity between the inner end panel and the motor body. The rotating blades are located in the airflow cavity, and a first temperature sensor is arranged in the airflow cavity.

[0010] The cooling chamber is provided with a plurality of air inlet tubes penetrating the cooling chamber, the inner wall of the air inlet tubes is fitted with an electrostatic tube, a cleaning assembly is inserted into one side of the cooling chamber, the cleaning assembly includes a positioning sleeve, a plurality of connecting rods are fixedly connected to the outer side of the positioning sleeve, a plurality of cleaning rods are fixedly connected to the connecting rods, each cleaning rod is independently inserted into an electrostatic tube, and a hard brush in contact with the inner wall of the electrostatic tube is provided at the side end of the cleaning rod.

[0011] The upper side of the fan cover is connected to a liquid outlet pipe connected to the top of the cooling chamber, the lower side of the fan cover is connected to a liquid inlet pipe connected to the bottom of the cooling chamber, and a flow rate sensor, a water pump and a cooling mechanism are arranged upstream of the liquid inlet pipe in sequence.

[0012] As a preferred technical solution of the reduction motor of the present invention: a rotating shaft extending into the air flow cavity is provided at the output end of the motor body, and the rotating fan blades are fixedly mounted on the rotating shaft.

[0013] As a preferred technical solution of the speed reducer motor of the present invention: the outer annular surface of the electrostatic tube is sprayed with an insulating coating in contact with the inner wall of the air inlet tube. The length of the cleaning rod extending into the electrostatic tube is the same as the axial length of the electrostatic tube.

[0014] As a preferred technical solution of the reduction motor of the present invention: a hard brush is arranged at one end of the cleaning rod away from the positioning sleeve.

[0015] As a preferred technical solution for the reduction motor of the present invention: a connecting column is provided at the center of the outer end panel, and the connecting column and the positioning sleeve are provided with positioning holes that cooperate with each other, and a limiting rod is inserted at the position of the positioning hole. After the limiting rod is installed, the positioning sleeve is stably connected to the connecting column.

[0016] As a preferred technical solution of the reduction motor of the present invention: the first temperature sensor is installed beside the opening position of the air inlet cylinder on one side of the inner end panel.

[0017] As a preferred technical solution of the reduction motor of the present invention: an annular plate is arranged outside the fan cover, one side of the plurality of electrostatic tubes extends to the outside of the fan cover and is fixedly connected to the annular plate. A connecting protrusion is arranged outside the outer end panel, a threaded hole is arranged inside the connecting protrusion, a circular hole is arranged on the surface of the annular plate, and a through circular hole is arranged on one side of the annular plate, and bolts are installed at the positions of the through circular hole and the threaded hole.

[0018] The present invention also provides a control method for an intelligent cooling control type high-power reduction motor, comprising the following contents:

[0019] S1. The reduction motor starts, and the rotating shaft drives the rotating fan blades to rotate, dissipating the heat of the reduction motor.

[0020] S2. The rotating fan blades rotate, and the external airflow enters the airflow cavity from the electrostatic tube and blows toward the heat dissipation fins. When the external air flows through the electrostatic tube, the electrostatic tube absorbs dust and impurities in the external air.

[0021] S3. The first temperature sensor detects that the gas temperature at the outlet of the air inlet tube toward the inner end panel is W1, and the second temperature sensor detects that the motor body temperature of the reduction motor when working is W2.

[0022] Then the real-time power of the water pump F (P 总 )=P min +F(P 差额1 )+F(P 差额2 ), P min The minimum operating power of the pump preset for the system, P 差额1 is the intake temperature difference compensation power, P 差额2 To dissipate the power of temperature difference compensation.

[0023] S3.1. When W2>W max , water pump starts, P 差额2 Start, F (P 差额2 )∝F(W2-W max ), where W max The water pump start reference temperature preset for the system.

[0024] Pump start reference temperature: Motor body temperature exceeds W max When the temperature of the motor is low, the water pump starts. Whether the water pump starts is determined by detecting the temperature of the motor body.

[0025] S3.2. When W2>W max , W1>W 冷风 When P 差额1 Start, F (P 差额1 )∝F(W1-W 冷风 ), where W 冷风 The preset air-cooling intake reference temperature for the system.

[0026] Air-cooled intake air reference temperature W 冷风 It means that when the water pump is started, the first temperature sensor detects that the air flow temperature in the suction air flow cavity exceeds the temperature that can effectively dissipate heat to the motor body. This temperature can be understood as the air-cooled intake reference temperature.

[0027] Among them, the intake temperature difference compensation power P 差额1 It means that when the gas temperature W1 at the air outlet is higher than the air-cooled air inlet reference temperature W 冷风 When W1 is greater than W2, it indicates that the gas temperature at the outlet is too high. It is necessary to increase the pump power, speed up the water flow rate, and reduce the gas temperature flowing out of the outlet. 冷风 The greater the temperature difference between 差额1 The bigger.

[0028] Heat dissipation temperature difference compensation power P 差额2 It means that when the temperature W2 of the motor body is higher than the water pump starting reference temperature W preset by the system max When W2 is greater than W, it indicates that the temperature of the motor body is high during operation. It is necessary to increase the water pump power, speed up the heat dissipation efficiency, and reduce the temperature of the motor body during operation. max The greater the temperature difference between 差额2 The bigger.

[0029] S3.3. When W2 <W max , the water pump stops working.

[0030] S4. The water pump supplies the coolant from the liquid inlet pipe to the cooling chamber, and then the coolant passes through the cooling chamber and flows out from the liquid outlet pipe to the cooling mechanism for cooling, and then flows back to the water pump.

[0031] S5. When the electrostatic tube needs to be cleaned, remove the fixed connection structure between the cleaning assembly and the fan cover, and then pull the cleaning rod out of the electrostatic tube. In the process of pulling out the cleaning rod, the hard brush scrapes the inner wall of the electrostatic tube, sweeps away the impurities attached to the inner wall of the electrostatic tube, and carries them out of the inner cavity of the electrostatic tube.

[0032] The present invention provides an intelligent cooling control type high-power reduction motor and a control method, which have the following beneficial effects:

[0033] 1. The present invention cooperates with the electrostatic tube and the cleaning rod. When the reduction motor is working, coolant flows into the cooling chamber, and external airflow flows in from the electrostatic tube. After the airflow enters the electrostatic tube, the coolant cools the airflow, and dust and impurities in the airflow are adsorbed on the cleaning rod and the inner wall of the electrostatic tube. A hard brush is provided to block the dust and impurities, thereby preventing impurities in the airflow from flowing into the fan cover.

[0034] 2. The present invention regulates the liquid cooling supply rate in a more linear and adaptive manner according to the real-time changes in the air intake temperature, the motor surface temperature, and the difference between the two and the corresponding reference values, effectively coordinates the relationship between the cooling demand and the power output, and realizes efficient and energy-saving air-cooling and liquid-cooling combined cooling and heat dissipation of the reduction motor.

[0035] 3. In the present invention, when the electrostatic tube needs to be cleaned, it is only necessary to separate the connecting column and the positioning sleeve, and then extract the cleaning rod, thereby pulling the cleaning rod out of the electrostatic tube. When the cleaning rod moves, the hard bristles will scrape off the impurities attached to the inner wall of the electrostatic tube, thereby achieving the purpose of cleaning the electrostatic tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0037] Figure 2 It is a schematic diagram of the cross-sectional structure of the fan cover of the present invention.

[0038] Figure 3 It is a schematic diagram of the fan cover and cooling chamber structure of the present invention.

[0039] Figure 4 It is a schematic diagram of the explosion structure of the fan cover and cleaning assembly of the present invention.

[0040] Figure 5 It is a schematic diagram of the structure of the circulation component of the present invention.

[0041] Figure 6 Schematic diagram of the outer end panel and bolt connection structure.

[0042] Figure 7 It is a schematic diagram of the cross-sectional structure of the cooling cavity and the airflow cavity.

[0043] In the figure: 1. fan cover, 101. outer end panel, 102. inner end panel, 103. cooling chamber, 104. air flow chamber, 105. connecting protrusion; 2. motor body, 201. heat dissipation fin; 3. cleaning component, 301. cleaning rod, 302. hard brush, 303. limit rod, 304. positioning sleeve, 305. connecting rod; 4. bolt; 5. air inlet tube; 6. circulation component, 601. liquid outlet pipe, 602. liquid inlet pipe, 603. flow rate sensor, 604. water pump, 605. cooling mechanism; 7. rotating fan blades; 8. electrostatic tube; 9. first temperature sensor; 10. second temperature sensor; 11. connecting column; 12. annular plate; 13. rotating shaft. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0045] Embodiment 1: The present invention designs an intelligent cooling control type high-power reduction motor, and its main structural configuration contents are as follows:

[0046] ㈠Fan cover structure: Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 The fan cover 1 mainly includes an outer end panel 101, an inner end panel 102, a cooling chamber 103 and an airflow chamber 104. The cooling chamber 103 is located between the outer end panel 101 and the inner end panel 102, and the airflow chamber 104 is located between the inner end panel 102 and the motor body 2. A connecting column 11 is provided at the center of the outer end panel 101 for connecting the cleaning component 3. A connecting protrusion 105 is provided on the outer side of the outer end panel 101, and a threaded hole is provided inside the connecting protrusion 105, which is connected to the annular plate 12 by bolts 4 to fix the electrostatic tube 8. As shown in the attached Figure 6 The connection details between the connecting protrusion 105 and the bolt 4 are shown, which ensures the stability and sealing of the overall structure of the fan cover and provides basic protection for cooling and air circulation.

[0047] ㈡Air intake and cooling components: such as Figure 2 , Figure 3 , Figure 7 The cooling cavity 103 is provided with a plurality of air inlet tubes 5 passing through, and the inner wall thereof is fitted with an electrostatic tube 8. The outer surface of the electrostatic tube 8 is sprayed with an insulating coating to prevent leakage and ensure a close fit with the air inlet tube 5. The airflow enters from the electrostatic tube 8, and the coolant cools the incoming airflow in the cooling cavity 103. The layout of the air inlet tube 5 and the electrostatic tube 8 allows the airflow to be initially cooled and impurities adsorbed before entering the motor, effectively protecting the internal structure of the fan cover 1 and improving the heat dissipation efficiency.

[0048] ㈢Clean up component structure: such as Figure 3 , Figure 4 The cleaning assembly 3 includes a positioning sleeve 304, and a connecting rod 305 on the outside thereof connects a plurality of cleaning rods 301. The cleaning rods 301 are inserted into the electrostatic tube 8, and a hard brush 302 is located at one end of the cleaning rod 301 away from the positioning sleeve 304, and the hard brush 302 contacts the inner wall of the electrostatic tube 8. The cleaning assembly 3 is fixed to the fan cover 1 through the connecting column 11, the positioning jack of the positioning sleeve 304, and the limiting rod 303. This structure facilitates the installation and disassembly of the cleaning assembly 3, can effectively prevent dust and impurities from entering the fan cover during the operation of the motor, and can be easily operated when cleaning is needed, ensuring the cleanliness of the electrostatic tube 8 and maintaining a good air intake and cooling effect.

[0049] ㈣Temperature sensor and circulation component installation: Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7The first temperature sensor 9 is installed near the opening of the air inlet tube 5 on one side of the inner end panel 102, and is used to detect the temperature of the air flow entering the air flow chamber 104. The second temperature sensor 10 is located on the surface of the motor body 2 to detect the temperature of the motor body 2. The upper side of the fan cover 1 is connected to the liquid outlet pipe 601 and communicates with the top of the cooling chamber 103, and the lower side is connected to the liquid inlet pipe 602 and communicates with the bottom of the cooling chamber 103. The flow rate sensor 603, the water pump 604 and the cooling mechanism 605 are arranged upstream of the liquid inlet pipe 602 in sequence to form a coolant circulation system, as shown in the attached figure. Figure 5 As shown, these components work together to precisely regulate the coolant flow rate according to temperature changes to achieve efficient heat dissipation.

[0050] Embodiment 2: The present invention designs an intelligent cooling control method for a high-power reduction motor, and the specific working principle is as follows:

[0051] First, the reduction motor is started, the rotating shaft 13 rotates, and the rotating shaft 13 drives the rotating blades 7 to rotate to dissipate the heat of the reduction motor.

[0052] Then, the external airflow electrostatic tube 8 enters the airflow cavity 104 and blows toward the heat dissipation fins 201. When the external air flows through the electrostatic tube 8, the electrostatic tube 8 absorbs dust and impurities in the external air.

[0053] The first temperature sensor 9 detects that the temperature of the gas at the air outlet of the air inlet tube 5 toward the inner end panel 102 is W1, and the second temperature sensor 10 detects that the temperature of the motor body 2 when the reduction motor is working is W2.

[0054] Then the real-time power F (P 总 )=P min +F(P 差额1 )+F(P 差额2 ), P min The minimum operating power of the water pump 604 preset by the system, P 差额1 is the intake temperature difference compensation power, P 差额2 To dissipate the power of temperature difference compensation.

[0055] When W2>W max , water pump 604 starts, P 差额2 Start, F (P 差额2 )∝F(W2-W max ), W2 and W max The greater the temperature difference, the 差额2 The bigger.

[0056] When W2>W max , W1>W 冷风 When P 差额1 Start, F (P 差额1 )∝F(W1-W 冷风 ), W1 and W冷风 The larger the difference, the greater the 差额1 The bigger.

[0057] When W2 <W max , water pump 604 stops working.

[0058] The coolant flows into the cooling chamber 103 from the liquid inlet pipe 602 , and then flows out from the liquid outlet pipe 601 through the cooling chamber 103 . The outflowing liquid is cooled by the cooling mechanism 605 , and finally flows into the water pump 604 .

[0059] When the reduction motor and the electrostatic tube 8 stop working and the electrostatic tube 8 needs to be cleaned, the limit rod 303 is pulled out from the positioning sleeve 304 and the connecting column 11, thereby separating the positioning sleeve 304 from the connecting column 11, and then the positioning sleeve 304 and the cleaning rod 301 are pulled. Since a hard brush 302 is provided on one side of the cleaning rod 301, that is, in the process of extracting the cleaning rod 301, the hard brush 302 will scrape the inner wall of the electrostatic tube 8 and clean off the impurities attached to the inner wall of the electrostatic tube 8.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent cooling control type high-power reduction motor, comprising a fan cover (1), a rotating fan blade (7) located in the fan cover (1), a motor body (2) and a second temperature sensor (10) located on the surface of the motor body (2), wherein the outer side of the motor body (2) is evenly provided with heat dissipation fins (201), characterized in that: The fan cover (1) comprises an outer end panel (101), an inner end panel (102), a cooling cavity (103) located between the outer end panel (101) and the inner end panel (102), and an airflow cavity (104) located between the inner end panel (102) and the motor body (2); the rotating fan blades (7) are located in the airflow cavity (104); and a first temperature sensor (9) is arranged in the airflow cavity (104); A plurality of air inlet tubes (5) penetrating the cooling cavity (103) are arranged inside the cooling cavity (103); an electrostatic tube (8) is fitted on the inner wall of the air inlet tube (5); A cleaning assembly (3) is inserted into one side of the cooling cavity (103), the cleaning assembly (3) comprising a positioning sleeve (304), a plurality of connecting rods (305) being fixedly connected to the outside of the positioning sleeve (304), a plurality of cleaning rods (301) being fixedly connected to the connecting rods (305), each cleaning rod (301) being independently inserted into an electrostatic tube (8), and a hard brush (302) contacting the inner wall of the electrostatic tube (8) being provided at the side end of the cleaning rod (301); The upper side of the fan cover (1) is connected to a liquid outlet pipe (601) communicating with the top of the cooling chamber (103); the lower side of the fan cover (1) is connected to a liquid inlet pipe (602) communicating with the bottom of the cooling chamber (103); a flow rate sensor (603), a water pump (604) and a cooling mechanism (605) are sequentially arranged upstream of the liquid inlet pipe (602).

2. According to claim 1, the intelligent cooling control type high power reduction motor is characterized in that: The output end of the motor body (2) is provided with a rotating shaft (13) extending into the airflow cavity (104), and the rotating blades (7) are fixedly mounted on the rotating shaft (13).

3. The intelligent cooling controlled high-power reduction motor according to claim 1 is characterized in that: The outer annular surface of the electrostatic tube (8) is sprayed with an insulating coating that contacts the inner wall of the air inlet tube (5); The length of the cleaning rod (301) extending into the electrostatic tube (8) is the same as the axial length of the electrostatic tube (8).

4. The intelligent cooling controlled high-power reduction motor according to claim 1 is characterized in that: The hard brush (302) is arranged at one end of the cleaning rod (301) away from the positioning sleeve (304).

5. The intelligent cooling controlled high-power reduction motor according to claim 1 is characterized in that: A connecting column (11) is provided at the center of the outer end panel (101); the connecting column (11) and the positioning sleeve (304) are provided with mutually matching positioning holes, and a limiting rod (303) is inserted at the positioning hole.

6. The intelligent cooling controlled high-power reduction motor according to claim 1 is characterized in that: The first temperature sensor (9) is installed next to the opening of the air inlet tube (5) on one side of the inner end panel (102).

7. The intelligent cooling controlled high power reduction motor according to claim 1, characterized in that: An annular plate (12) is arranged outside the fan cover (1), and one side end of each of the plurality of electrostatic tubes (8) extends to the outside of the fan cover (1) and is fixedly connected to the annular plate (12); A connecting protrusion (105) is arranged on the outside of the outer end panel (101), and a threaded hole is arranged inside the connecting protrusion (105); A circular hole is provided on the surface of the annular plate (12), and a through circular hole is provided on one side of the annular plate (12), and bolts (4) are installed at the positions of the through circular hole and the threaded hole.

8. A control method for an intelligent cooling controlled high-power reduction motor, characterized in that: An intelligent cooling controlled high-power reduction motor according to any one of claims 1 to 7, comprising the following contents: S1. The reduction motor is started to drive the rotating blades (7) in the fan cover (1) to rotate; S2. When the rotating fan blade (7) rotates, the external airflow enters the airflow cavity (104) from the electrostatic tube (8) and blows toward the heat dissipation fins (201); When the external airflow passes through the electrostatic tube (8), the electrostatic tube (8) absorbs dust and impurities in the external airflow; S3. The first temperature sensor (9) detects that the temperature of the airflow entering the airflow chamber (104) is W1, and the second temperature sensor (10) detects that the temperature of the motor body (2) when the reduction motor is working is W2; Then the real-time power F(P 总 )=P min +F(P 差额1 )+F(P 差额2 ); Among them, P min The minimum operating power of the water pump (604) preset for the system, P 差额1 is the intake temperature difference compensation power, P 差额2 To compensate the power for the temperature difference of heat dissipation; S3.

1. When W2>W max , the water pump (604) starts, P 差额2 start up: F(P 差额2 )∝F(W2-W max ), where W max A water pump (604) start-up reference temperature preset for the system; S3.

2. When W2>W max , W1>W 冷风 When P 差额1 start up: F(P 差额1 )∝F(W1-W 冷风 ), where W 冷风 The preset air-cooling intake reference temperature for the system; S3.

3. When W2 <W max , the water pump (604) stops working; S4. The water pump (604) supplies the coolant from the liquid inlet pipe (602) into the cooling chamber (103), and the coolant then flows through the cooling chamber (103) and out of the liquid outlet pipe (601) to the cooling mechanism (605) for cooling, and then flows back to the water pump (604); S5. When it is necessary to clean the electrostatic tube (8), the fixed connection structure between the cleaning assembly (3) and the fan cover (1) is removed, and then the cleaning rod (301) is pulled out of the electrostatic tube (8). During the process of pulling out the cleaning rod (301), the hard brush (302) scrapes the inner wall of the electrostatic tube (8), cleans off the impurities attached to the inner wall of the electrostatic tube (8), and removes them from the inner cavity of the electrostatic tube (8).

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