Motor with protection function and motor protection method

Abstract

The present invention discloses a motor with a protection function and a motor protection method, which relates to the technical field of motors, including a mounting seat, a motor mounted on the mounting seat, a motor shoulder arranged on the outer shell of the motor, a motor shaft of the motor passing through the middle of the motor shoulder, a vibration protection device arranged on the motor shoulder, the vibration protection device comprising a fitting ring, the fitting ring sleeve arranged on the motor shoulder, a temperature sensor fixedly mounted on one side of the fitting ring, the temperature sensor being in close contact with the motor, a sleeve ring fixedly mounted on the mounting seat, a plurality of sensors one being fixedly mounted on the fitting ring, and a distance being left between the sensor one and the sleeve ring. The temperature sensor is in close contact with the motor and can monitor the temperature generated between the motor shaft and the motor at any time, and cut off the power supply in time for protection when the temperature is too high, the relative rotation between the motor shaft and the motor will cause wear, and the temperature rises when the wear reaches a certain degree and damages the motor, and the real-time monitoring of the temperature sensor can avoid further damage to the motor and repair the motor in time.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor with a protection function and a motor protection method. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy. It works on the principle of electromagnetic induction or electrodynamics. When current passes through the coil inside the motor, a magnetic field is generated. This magnetic field interacts with the permanent magnet in the motor or the magnetic field generated by another set of energized coils, thereby generating a rotational force, driving the motor shaft to rotate, and then driving the mechanical parts connected to it to move. Motors are widely used in various industries, agriculture, transportation, household appliances, and automation control systems. They are indispensable and important equipment in modern industrial production and daily life. The motor protection system is a vital component. It is responsible for monitoring the operating status of the motor and preventing damage caused by abnormal conditions such as overload, overheating, short circuit, undervoltage, and overvoltage. This system integrates a variety of sensors and protection devices, such as temperature sensors, current sensors, voltage monitors, and overload relays, to collect the operating parameters of the motor in real time and compare them with the preset safety thresholds. Once an abnormality is detected, the protection system will respond quickly to ensure the safe shutdown of the motor and prevent the expansion of the fault by cutting off the power supply, adjusting the load, or triggering the alarm mechanism, thereby protecting the motor from damage, extending its service life, and ensuring the stable operation of the entire system. Therefore, the motor protection system is not only an important guarantee for the safe operation of the motor, but also a key factor in improving equipment reliability and maintaining production efficiency.

[0003] However, in the prior art, more attention is often paid to the overload protection or circuit protection of the motor. The motor bearings often wear out during the operation of the motor. The worn motor will produce radial deviation during rotation, and will also increase the temperature of the corresponding position, eventually causing damage to the motor. Summary of the invention

[0004] In view of the above technical problems, the present invention discloses a motor with a protection function, including a mounting seat, a motor mounted on the mounting seat, a motor shoulder arranged on the motor housing, a motor shaft of the motor passing through the middle of the motor shoulder, a vibration protection device arranged on the motor shoulder, the vibration protection device including a fitting ring, the fitting ring sleeved on the motor shoulder, a temperature sensor fixedly mounted on one side of the fitting ring, the temperature sensor tightly attached to the motor, a sleeve ring fixedly mounted on the mounting seat, a plurality of sensors 1 fixedly mounted on the fitting ring, a distance between the sensor 1 and the sleeve ring. Through the above technical scheme, the temperature sensor is closely attached to the motor and can monitor the temperature generated between the motor shaft and the motor at any time, and cut off the power supply in time for protection when the temperature is too high, the relative rotation between the motor shaft and the motor will cause wear, and the temperature rise when the wear reaches a certain degree will damage the motor, and the real-time monitoring of the temperature sensor can avoid further damage to the motor and repair the motor in time.

[0005] Furthermore, the collar is provided with a plurality of sleeves 2, the number of which corresponds to the number of the sensors 1, the inner diameter of the sleeve 2 is larger than the diameter of the sensor 1, the sensor 1 is a distance sensor, and the distance between the top of the sensor 1 and the sleeve 2 is monitored in real time by the sensor 1. Through the above technical solution, since the fitting ring is installed on the motor shoulder, the distance between the sensor 1 and the sleeve 2 can determine whether the motor as a whole generates vibration during operation, and the vibration amplitude is caused by the unstable installation of the motor. The inner diameter of the sleeve 2 is larger than the inner diameter of the sensor 1, so how can it be ensured that vibrations in all directions can be monitored by the sensor 1, and the sensors 1 in multiple directions will not get stuck in the sleeve 2.

[0006] Furthermore, the vibration protection device also includes a support sleeve, which is fixedly mounted on the mounting seat, a support rod is installed in the support sleeve, the width of the support rod is smaller than the inner diameter of the support sleeve, the upper end of the support rod is fixedly connected to the fitting ring, and a downward pressure shaft is fixedly mounted on the lower end of the fitting ring, the downward pressure shaft extends from the lower side of the sleeve ring, and a locking assembly is installed on the support sleeve, and when the downward pressure shaft extends downward to a specified distance, the support rod is fixed.

[0007] Furthermore, the locking assembly includes a locking seat, which is fixedly mounted on the support sleeve, a locking block is slidably mounted on the locking seat, a bevel 1 is arranged on the upper end of the locking seat to cooperate with the lower end of the lower pressure shaft, a locking shaft is slidably mounted on the locking seat, a locking spring is fixedly mounted between the locking shaft and the locking seat, a groove and a bevel 2 are arranged on the lower end of the locking block and both cooperate with the upper end of the locking shaft, a locking hole is arranged on the support rod, and the downward movement of the lower pressure shaft drives the locking block to move toward the locking hole, and the groove cooperation between the locking shaft and the locking block is transformed into cooperation with the bevel 2 during the movement. Through the above technical scheme, when the vibration amplitude of the motor is too large, it is easy to cause damage to the coupling and the load equipment, so the locking assembly can fix one end of the motor to maintain stability for a period of time. This link is a bottom protection scheme after the failure of sensor 1, and the mechanical protection is not easy to fail.

[0008] Furthermore, a chamfer is provided at one end of the locking block close to the locking hole, and the locking block can lock the support rod after fully entering the locking hole.

[0009] Furthermore, a rotation protection device is installed on the motor shaft, and the rotation protection device includes a ring, which is fixedly installed on one side of the vibration protection device. A limit block is slidably installed on the inner side of the ring, and a clamping shaft is radially slidably installed on the limit block. The first end of the clamping shaft is fixedly installed with a clamping block, the clamping block is fitted with the motor shaft, a clamping spring is fixedly installed between the clamping block and the limit block, and the second end of the clamping block is fixedly installed with sensor 2.

[0010] Furthermore, a circular groove is provided inside the circular ring, a matching sleeve is slidably installed in the circular groove, the matching sleeve is slidably connected to the clamping shaft, and the deviation of the motor shaft rotation is judged by the distance between the second sensor and the matching sleeve. Through the above technical solution, the deviation degree of the motor shaft rotation can be monitored. If the motor shaft rotation produces radial deviation, it will also affect the service life of the loaded equipment, and long-term deviation rotation is also prone to overheating and damage to the motor.

[0011] Furthermore, a brake seat is fixedly mounted on the mounting seat, and a brake block is fixedly mounted on the brake seat via a cylinder. The brake block cooperates with the brake seat to rub the motor shaft for braking and deceleration.

[0012] A motor protection method, used for the above motor with protection function, comprises the following steps:

[0013] Step 1: The motor, sensor 1 and sensor 2 are started, and sensor 1 and sensor 2 monitor the operating status at any time.

[0014] Step 2: Determine the protection mode. When sensor 2 reaches the preset distance, determine whether sensor 2 is squeezed. If it is not squeezed, it means the offset distance is not large. At this time, turn off the power for maintenance. At the same time, determine whether sensor 1 reaches the preset value. If it reaches the preset value, turn off the power.

[0015] Step 3: If sensor 2 is squeezed, the brake assembly is activated. At this time, the motor shaft may be broken. The brake assembly clamps the motor shaft to prevent the broken shaft from flying out.

[0016] The beneficial effects of the present invention compared with the prior art are:

[0017] (1) Through the technical solution of the present invention, the temperature sensor is closely attached to the motor and can monitor the temperature generated between the motor shaft and the motor at any time. When the temperature is too high, the power supply is cut off in time for protection. The relative rotation between the motor shaft and the motor will cause wear. When the wear reaches a certain level, the temperature rises and damages the motor. The real-time monitoring of the temperature sensor can avoid further damage to the motor and repair the motor in time.

[0018] (2) Through the technical solution of the present invention, since the fitting ring is installed on the motor shaft shoulder, the distance between sensor 1 and sleeve 2 can determine whether the motor as a whole generates vibration during operation. The vibration amplitude is caused by the unstable installation of the motor. The inner diameter of sleeve 2 is larger than the inner diameter of sensor 1, which can ensure that vibrations in all directions can be detected by sensor 1. Sensor 1 with multiple directions will not get stuck in sleeve 2.

[0019] (3) Through the technical solution of the present invention, when the vibration amplitude of the motor is too large, it is easy to cause damage to the coupling and the load equipment. Therefore, one end of the motor can be fixed and kept stable for a period of time through the locking component. This link is a bottom-line protection solution after the sensor fails, and the mechanical protection is not easy to fail.

[0020] (4) Through the technical solution of the present invention, the degree of deviation of the motor shaft rotation can be monitored. If the motor shaft rotation produces radial deviation, it will also affect the service life of the loaded equipment. In addition, long-term deviation rotation is also prone to overheating and damage to the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of some parts of the present invention.

[0023] Figure 3 It is a schematic diagram of the vibration protection device of the present invention.

[0024] Figure 4 for Figure 3 Side view of.

[0025] Figure 5 for Figure 4 Cross-sectional view of CC.

[0026] Figure 6for Figure 5 Enlarged view of point A in the middle.

[0027] Figure 7 It is a schematic diagram of the local structure of the present invention.

[0028] Figure 8 It is a partial side view of the present invention.

[0029] Fig. 9 for Figure 8 Cross-sectional view at DD in the middle.

[0030] Fig.10 for Fig. 9 Enlarged view of point B in the middle.

[0031] Fig.11 The figure is a flow chart of the protection method of the present invention.

[0032] Figure numbers: 1-vibration protection device; 2-rotation protection device; 3-motor; 4-motor shaft; 5-mounting seat; 6-brake seat; 7-brake block; 8-motor shoulder; 101-fitting ring; 102-sensor one; 103-sleeve two; 104-pressing shaft; 105-sliding seat; 106-slide rail; 107-locking block; 108-locking seat; 109-locking shaft; 110-locking spring; 111-support sleeve; 112-support rod; 113-locking hole; 114-ring; 115-temperature sensor; 201-circular ring; 202-limiting block; 203-clamping block; 204-clamping spring; 205-clamping shaft; 206-matching sleeve; 207-sensor two. DETAILED DESCRIPTION

[0033] The present application is further described below with reference to the accompanying drawings.

[0034] like Figure 1-Figure 11A motor with a protection function and a motor protection method are shown, wherein the motor with a protection function includes a mounting seat 5, a motor 3 is mounted on the mounting seat 5, a motor shoulder 8 is provided on the outer shell of the motor 3, a motor shaft 4 of the motor 3 passes through the middle of the motor shoulder 8, a vibration protection device 1 is installed on the motor shoulder 8, the vibration protection device 1 includes a fitting ring 101, the fitting ring 101 is sleeved on the motor shoulder 8, a temperature sensor 115 is fixedly mounted on one side of the fitting ring 101, the temperature sensor 115 is tightly attached to the motor 3, a sleeve ring 114 is fixedly mounted on the mounting seat 5, a plurality of sensors 102 are fixedly mounted on the fitting ring 101, and a distance is left between the sensor 102 and the sleeve ring 114. In the present embodiment, a total of three sensors 102 are arranged, two of which are horizontal and the other is vertical, for judging deviations in different directions. Through the above technical scheme, the temperature sensor 115 is close to the motor 3 and can monitor the temperature generated between the motor shaft 4 and the motor 3 at any time. When the temperature is too high, the power supply is cut off in time for protection. The relative rotation between the motor shaft 4 and the motor 3 will cause wear. When the wear reaches a certain degree and the temperature rises, the motor 3 will be damaged. The real-time monitoring of the temperature sensor 115 can avoid further damage to the motor 3 and repair the motor 3 in time.

[0035] In this embodiment, a plurality of sleeves 103 are arranged on the collar 114, and the number corresponds to the number and position of the sensor 1 102. The inner diameter of the sleeve 103 is larger than the diameter of the sensor 1 102. Since the monitoring includes lateral and vertical directions, the larger inner diameter can satisfy the sensor 1 102. When moving lateral, the vertical sensor 102 can also move in the sleeve 103. The sensor 102 is a distance sensor, and the distance between the top of the sensor 102 and the sleeve 103 is monitored by the sensor 102 in real time. Through the above technical solution, since the fitting ring 101 is installed with the motor shoulder 8, the distance between the sensor 1 102 and the sleeve 103 can determine whether the motor 3 as a whole generates vibration during operation, and the vibration amplitude is caused by the unstable installation of the motor 3. The inner diameter of the sleeve 103 is larger than the inner diameter of the sensor 1 102, so how can it be ensured that the vibration in each direction can be monitored by the sensor 1 102, and the sensor 1 102 set in multiple directions will not be stuck in the sleeve 103.

[0036] In this embodiment, the vibration protection device 1 also includes a support sleeve 111, which is fixedly mounted on the mounting seat 5. A support rod 112 is installed in the support sleeve 111. The width of the support rod 112 is smaller than the inner diameter of the support sleeve 111. The upper end of the support rod 112 is fixedly connected to the fitting ring 101. The lower end of the fitting ring 101 is fixedly mounted with a lower pressure shaft 104. The lower pressure shaft 104 extends from the lower side of the sleeve 114. A locking assembly is installed on the support sleeve 111. When the lower pressure shaft 104 extends downward to a specified distance, the support rod 112 is fixed.

[0037] In this embodiment, the locking assembly includes a locking seat 108, which is fixedly mounted on the support sleeve 111. The width of the support rod 112 is smaller than the inner diameter of the support sleeve 111. In daily use, it can meet the needs of lateral and vertical movement. A locking block 107 is slidably mounted on the locking seat 108, a sliding seat 105 is fixedly mounted on the locking seat 108, and a slide rail 106 is fixedly mounted on the slide seat 105. The locking block 107 slides on the locking seat 108 through the slide rail 106 and the slide seat 105. The locking seat 108 A slope 1 is set at the upper end to cooperate with the lower end of the lower pressure shaft 104, a locking shaft 109 is slidably installed on the locking seat 108, a locking spring 110 is fixedly installed between the locking shaft 109 and the locking seat 108, a groove and a slope 2 are set at the lower end of the locking block 107 and both cooperate with the upper end of the locking shaft 109, a locking hole 113 is set on the support rod 112, and the downward movement of the lower pressure shaft 104 drives the locking block 107 to move toward the locking hole 113, and the locking shaft 109 and the groove of the locking block 107 are transformed into cooperation with the slope 2 during the movement.

[0038] When the locking block 107 is inserted into the locking hole 113, the movement of the support rod 112 will be locked, so that the support rod 112 is fixed to the support sleeve 111, and the motor 3 is supported for a period of time through the fitting ring 101. During this process, the worker can turn off the motor. Through the above technical solution, when the vibration amplitude of the motor 3 is too large, it is easy to damage the coupling and the load equipment. Therefore, the locking assembly can fix one end of the motor 3 and keep it stable for a period of time. This link is a bottom protection solution after the sensor 102 fails, and the mechanical protection is not easy to fail. One end of the locking block 107 close to the locking hole 113 is chamfered, and the locking block 107 can lock the support rod 112 after fully entering the locking hole 113 .

[0039] In this embodiment, a rotation protection device 2 is installed on the motor shaft 4, and the rotation protection device 2 includes a circular ring 201. The circular ring 201 is fixedly installed on one side of the vibration protection device 1, specifically one side of the sleeve 114. A limit block 202 is slidably installed on the inner side of the circular ring 201, and a clamping shaft 205 is radially slidably installed on the limit block 202. A clamping block 203 is fixedly installed on the first end of the clamping shaft 205. The clamping block 203 is fitted with the motor shaft 4, and a clamping spring 204 is fixedly installed between the clamping block 203 and the limit block 202. A sensor 207 is fixedly installed on the second end of the clamping block 203; an annular groove is provided on the inner side of the circular ring 201, and a matching sleeve 206 is slidably installed in the annular groove. The matching sleeve 206 is slidably connected to the clamping shaft 205, and the deviation of the rotation of the motor shaft 4 is judged by the distance between the sensor 207 and the matching sleeve 206. The clamping block 203 rotates together with the motor shaft 4, and drives the limit block 202 to rotate in the ring 201 through the clamping shaft 205, and also drives the matching sleeve 206 to rotate. During the rotation of the motor shaft 4, radial deviation will occur. At this time, the clamping block 203 and the clamping shaft 205 produce radial movement to squeeze the clamping spring 204, which will drive the sensor 2 207 close to the top of the matching sleeve 206. If the predetermined distance is exceeded, the power will be cut off for protection. Through the above technical solution, the deviation degree of the rotation of the motor shaft 4 can be monitored. If the rotation of the motor shaft 4 produces radial deviation, it will also affect the service life of the loaded equipment, and long-term deviation rotation is also prone to overheating and damage to the motor 3.

[0040] The mounting base 5 is fixed with a brake base 6, and the brake block 7 is fixed with the brake base 6 through a cylinder. The brake block 7 cooperates with the brake base 6 to rub the motor shaft 4 to brake and decelerate. When the equipment needs to decelerate, if the motor shaft 4 is not decelerated together, the torques received at both ends of the motor shaft 4 are different, which is easy to break. Therefore, braking and decelerating the motor shaft 4 at the same time can better protect the motor shaft 4. If the sensor 207 exceeds the preset value and is squeezed, it may be that the motor shaft 4 is broken. At this time, the brake base 6 and the brake block 7 will be urgently started to clamp the motor shaft 4 to prevent the motor shaft 4 from breaking and flying out.

[0041] A motor protection method, used for the above motor with protection function, comprises the following steps:

[0042] Step 1: The motor, sensor 1 102 and sensor 2 207 are started, and sensor 1 102 and sensor 2 207 monitor the operating status at any time.

[0043] Step 2: Determine the protection mode. When sensor 207 reaches the preset distance, determine whether sensor 207 is squeezed. If it is not squeezed, it means that the offset distance is not large. At this time, turn off the power for maintenance. At the same time, determine whether sensor 102 reaches the preset value. If it reaches the preset value, turn off the power.

[0044] Step 3: If the sensor 207 is squeezed, the brake assembly is activated. At this time, the motor shaft 4 may be broken, and the brake assembly clamps the motor shaft 4 to prevent the broken shaft from flying out.

Claims

1. A motor with a protective function, comprising a mounting seat (5), a motor (3) being mounted on the mounting seat (5), a motor shaft shoulder (8) being arranged on the housing of the motor (3), a motor shaft (4) of the motor (3) passing through the middle of the motor shaft shoulder (8), characterized in that: A vibration protection device (1) is mounted on the motor shoulder (8), the vibration protection device (1) comprising a fitting ring (101), the fitting ring (101) being sleeved on the motor shoulder (8), a temperature sensor (115) being fixedly mounted on one side of the fitting ring (101), the temperature sensor (115) being in close contact with the motor (3), a sleeve ring (114) being fixedly mounted on the mounting seat (5), a plurality of sensors (102) being fixedly mounted on the fitting ring (101), a distance being left between the sensors (102) and the sleeve ring (114); The collar (114) is provided with a plurality of sleeves 2 (103), the number of which corresponds to the number of the sensor 1 (102); the inner diameter of the sleeve 2 (103) is larger than the diameter of the sensor 1 (102); the sensor 1 (102) is a distance sensor, and the distance between the top of the sensor 1 (102) and the sleeve 2 (103) is monitored in real time by the sensor 1 (102); The vibration protection device (1) further comprises a support sleeve (111), the support sleeve (111) being fixedly mounted on the mounting seat (5), a support rod (112) being mounted inside the support sleeve (111), the width of the support rod (112) being smaller than the inner diameter of the support sleeve (111), the upper end of the support rod (112) being fixedly connected to the fitting ring (101), the lower end of the fitting ring (101) being fixedly mounted with a lower pressing shaft (104), the lower pressing shaft (104) extending from the lower side of the sleeve ring (114), a locking assembly being mounted on the support sleeve (111), and the support rod (112) being fixed when the lower pressing shaft (104) extends downward to a specified distance; The locking assembly comprises a locking seat (108), the locking seat (108) being fixedly mounted on a supporting sleeve (111), a locking block (107) being slidably mounted on the locking seat (108), an inclined surface 1 being arranged at the upper end of the locking seat (108) and cooperating with the lower end of the lower pressure shaft (104), a locking shaft (109) being slidably mounted on the locking seat (108), a locking spring (110) being fixedly mounted between the locking shaft (109) and the locking seat (108), a groove and an inclined surface 2 being arranged at the lower end of the locking block (107) and both being cooperating with the upper end of the locking shaft (109), a locking hole (113) being arranged on the supporting rod (112), the lower pressure shaft (104) moving downward drives the locking block (107) to move toward the locking hole (113), and the locking shaft (109) and the locking block (107) are transformed into cooperating with the inclined surface 2 during the movement process.

2. A motor with a protective function according to claim 1, characterized in that: A chamfer is provided at one end of the locking block (107) close to the locking hole (113), and the locking block (107) is able to lock the support rod (112) after it completely enters the locking hole (113).

3. The motor with protection function according to claim 2, characterized in that: The motor shaft (4) is provided with a rotation protection device (2), the rotation protection device (2) comprising a circular ring (201), the circular ring (201) being fixedly mounted on one side of the vibration protection device (1), a limit block (202) being slidably mounted on the inner side of the circular ring (201), a clamping shaft (205) being slidably mounted on the limit block (202) in a radial direction, a clamping block (203) being fixedly mounted on the first end of the clamping shaft (205), the clamping block (203) being fitted with the motor shaft (4), a clamping spring (204) being fixedly mounted between the clamping block (203) and the limit block (202), and a second sensor (207) being fixedly mounted on the second end of the clamping block (203).

4. The motor with protection function according to claim 3, characterized in that: The inner side of the circular ring (201) is provided with a circular groove, in which a matching sleeve (206) is slidably mounted, and the matching sleeve (206) is slidably connected to the clamping shaft (205). The rotation deviation of the motor shaft (4) is determined by the distance between the second sensor (207) and the matching sleeve (206).

5. The motor with protection function according to claim 4, characterized in that: A brake seat (6) is fixedly mounted on the mounting seat (5), and a brake block (7) is fixedly mounted on the brake seat (6) via a cylinder. The brake block (7) cooperates with the brake seat (6) to rub against the motor shaft (4) to brake and decelerate.

6. A motor protection method, using the motor with protection function as claimed in claim 5, characterized in that: The steps include: Step 1: The motor, sensor 1 (102) and sensor 2 (207) are started, and sensor 1 (102) and sensor 2 (207) monitor the operating status at any time; Step 2: Determine the protection mode. When the sensor 2 (207) reaches the preset distance, determine whether the sensor 2 (207) is squeezed. If it is not squeezed, it means that the offset distance is not large. At this time, turn off the power supply for maintenance. At the same time, determine whether the sensor 1 (102) reaches the preset value. If it reaches the preset value, turn off the power supply; Step 3: If the sensor 2 (207) is squeezed, the brake assembly is activated. At this time, it is possible that the motor shaft (4) is broken. The brake assembly clamps the motor shaft (4) to prevent the broken shaft from flying out.

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