Motor bearing temperature measuring device

Abstract

The utility model belongs to the technical field of motor bearing temperature measurement, and particularly relates to a motor bearing temperature measuring device which comprises a base, a moving groove is formed in a lifting rod, a moving block is assembled in the moving groove, a spring is installed between the bottom side of the moving block and the inner wall of the moving groove, a connecting rod is installed on the top side of the moving block, and the connecting rod is connected with the lifting rod. A thermistor is mounted on the top side of the lifting rod, and the thermistor on the lifting rod is driven by the lifting rod to vertically move upwards until the thermistor is in contact with the bearing, so that the thermistor can be in contact with motor bearings of different models; then the lifting rod continues to vertically move upwards, a connecting rod on the lifting rod moves downwards relative to the lifting rod, the connecting rod drives a moving block to move downwards, the moving block compresses a spring, in the operation process of the motor, the bearing vibrates, and by arranging the spring, the spring can push the thermistor to make contact with the outer surface of the bearing all the time; the stability of temperature measurement is realized, and the accuracy of temperature measurement is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor bearing temperature measurement, in particular to a motor bearing temperature measurement device. Background Art

[0002] Motor bearings are special bearings used specifically in electric motors. The bearings used in motors are parts that support the shaft. They can guide the rotation of the shaft and also withstand the idling parts on the shaft. In order to ensure the stable operation of the motor, a temperature measuring device is required to measure the temperature of the motor bearings.

[0003] A Chinese patent with publication number CN220187870U discloses a motor bearing temperature measuring device, including a lead wire, one end of which is equipped with a temperature measuring probe, and the other end is connected to a temperature measuring junction box for feeding back the temperature of the bearing to be measured measured by the temperature measuring probe, a fixing mechanism connected to the motor is provided on the lead wire at one end of the temperature measuring probe, and a spring is provided between the temperature measuring probe and the fixing mechanism, and the temperature measuring probe is pressed close to the position of the bearing to be measured by the spring, the fixing mechanism includes a symmetrically arranged first fixing unit and a second fixing unit and a wire protection unit arranged therebetween, the first fixing unit is used to connect to the motor bearing sleeve, the second fixing unit is used to connect to the motor base, and the first fixing unit is arranged close to one end of the temperature measuring probe, the motor bearing temperature measuring device of the utility model is easy to install, the measurement result is accurate, the use safety is high, and it can be used in the bearing temperature measurement of various motors, and is widely used.

[0004] When the existing temperature measuring device measures the temperature of the motor bearing, the motor will cause the bearing to vibrate when it is running, which may easily cause the temperature measuring structure to loosen, resulting in poor temperature measurement accuracy; therefore, a motor bearing temperature measuring device is proposed to address the above problem. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the utility model proposes a motor bearing temperature measuring device.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: a motor bearing temperature measuring device described in the utility model comprises a base, a fixing plate is installed on the base, a mounting block is installed on the fixing plate, a sliding groove is provided in the mounting block, a screw rod is rotatably installed between the inner walls of the sliding groove, a worm wheel is fixedly sleeved on the screw rod, a worm is rotatably installed on the inner wall of the sliding groove, the worm rod penetrates the side wall of the mounting block and is welded with a knob, the worm rod is meshed with the worm wheel, a sliding block is installed in the sliding groove, the sliding block is sleeved on the outer periphery of the screw rod, the sliding block is provided with a thread and slides with the screw rod through the thread, a lifting rod is welded on the sliding block, a rod hole is provided on the top plate of the mounting block, the lifting rod penetrates the rod hole, a moving groove is provided inside the lifting rod, and a moving block is installed in the moving groove. A spring is installed between the bottom side of the moving block and the inner wall of the moving groove, a connecting rod is installed on the top side of the moving block, a rod hole is opened on the top plate of the lifting rod, the lifting rod passes through the rod hole, and a thermistor is installed on the top side of the lifting rod. The thermistor on it is driven to move vertically upward by the lifting rod until the thermistor contacts the bearing, so that the thermistor can contact motor bearings of different models; then the lifting rod continues to move vertically upward, the thermistor contacts the bearing and remains motionless, and the connecting rod on it moves downward relative to the lifting rod, and the connecting rod drives the moving block to move downward, and the moving block compresses the spring. During the operation of the motor, the bearing will vibrate. By setting the spring, the spring can push the thermistor to always contact the outer surface of the bearing, thereby achieving the stability of temperature measurement, which is beneficial to improving the accuracy of temperature measurement.

[0007] Preferably, a control panel is installed on the base, and the control panel is connected to the thermistor through a wire, an alarm light is installed on the fixed plate, and the alarm light is connected to the control panel through a wire, a base is installed on the base, a motor is installed on the base, an end cover is installed on the motor, an axial hole is opened on the end cover, a rotating shaft is installed on the motor, the rotating shaft passes through the end cover, a bearing is installed on the rotating shaft, the bearing is located between the axial hole of the end cover and the rotating shaft, and contacts with the bearing through the thermistor. When the temperature changes, the change in resistance of the thermistor will affect the current and voltage of the entire circuit, thereby reflecting the change in temperature. The control panel monitors the temperature of the bearing. When the temperature of the bearing exceeds the set threshold, the control panel will control the alarm light to turn on, thereby providing a prompt for overheating of the bearing, avoiding failure or damage caused by overheating, and helping to improve safety.

[0008] The utility model is beneficial in that:

[0009] 1. The utility model drives the thermistor thereon to move vertically upward by means of a lifting rod until the thermistor contacts the bearing, so that the thermistor can contact bearings of motors of different models; then the lifting rod continues to move vertically upward, the thermistor contacts the bearing and remains stationary, the connecting rod thereon moves downward relative to the lifting rod, the connecting rod drives the moving block to move downward, the moving block compresses the spring, during the operation of the motor, the bearing will vibrate, and by arranging the spring, the spring can push the thermistor to always contact the outer surface of the bearing, thereby achieving the stability of temperature measurement, which is beneficial to improving the accuracy of temperature measurement.

[0010] 2. The utility model contacts the bearing through the thermistor. When the temperature changes, the change in the resistance of the thermistor will affect the current and voltage of the entire circuit, thereby reflecting the change in temperature. The control panel monitors the temperature of the bearing. When the temperature of the bearing exceeds the set threshold, the control panel will control the alarm light to turn on, thereby providing a prompt for overheating of the bearing, avoiding failure or damage caused by overheating, and is beneficial to improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a schematic diagram of a three-dimensional structure from a first-person perspective;

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the side cross section of the mounting block;

[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the installation block;

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the motor.

[0016] In the figure: 1. base; 2. fixing plate; 3. mounting block; 4. slide groove; 5. screw; 6. worm gear; 7. worm; 8. knob; 9. slider; 10. lifting rod; 11. moving groove; 12. moving block; 13. spring; 14. connecting rod; 15. thermistor; 16. control panel; 17. alarm light; 18. base; 19. motor; 20. end cover; 21. rotating shaft; 22. bearing. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-2 As shown, a motor bearing temperature measuring device comprises a base 1, a fixed plate 2 is installed on the base 1, a mounting block 3 is installed on the fixed plate 2, a slide groove 4 is opened in the mounting block 3, a screw rod 5 is rotatably installed between the inner walls of the slide groove 4, a worm wheel 6 is fixedly sleeved on the screw rod 5, a worm 7 is rotatably installed on the inner wall of the slide groove 4, the worm 7 passes through the side wall of the mounting block 3 and is welded with a knob 8, the worm 7 is meshed with the worm wheel 6, a slider 9 is installed in the slide groove 4, the slider 9 is sleeved on the outer periphery of the screw rod 5, a thread is opened on the slider 9 and slides with the screw rod 5 through the thread, a lifting rod 10 is welded on the slider 9, a rod hole is opened on the top plate of the mounting block 3, the lifting rod 10 passes through the rod hole, a moving groove 11 is opened inside the lifting rod 10, a moving block 12 is installed in the moving groove 11, a spring 13 is installed between the bottom side of the moving block 12 and the inner wall of the moving groove 11, a connecting rod 14 is installed on the top side of the moving block 12, a rod hole is opened on the top plate of the lifting rod 10, and the lifting rod 10 The thermistor 15 is installed on the top side of the lifting rod 10 through the rod hole; when working, in the process of measuring the temperature of the motor 19 bearing 22 of the existing temperature measuring device, the motor 19 will drive the bearing 22 to vibrate during operation, which is easy to cause the temperature measuring structure to loosen, resulting in poor accuracy of temperature measurement. By installing the fixing plate 2 below the motor 19, the thermistor 15 is located below the bearing 22, and the knob 8 is turned to drive the worm 7 to rotate, and the worm 7 drives the worm wheel 6 to rotate. The combination of the worm wheel 6 and the worm 7 has self-locking properties, and the worm wheel 6 drives the lead screw 5 to rotate, and the lead screw 5 drives the slider 9 thereon to move vertically upward, and the slider 9 drives the lifting rod 10 thereon to move vertically upward, and the lifting rod 10 drives the thermistor 15 thereon to move vertically upward until the thermistor 15 contacts the bearing 22, thereby realizing the position adjustment of the thermistor 15, so that the thermistor 15 can contact the bearing 22 of motors 19 of different models;

[0019] Then continue to move the lifting rod 10 vertically upward, the thermistor 15 is in contact with the bearing 22 and remains motionless, and the connecting rod 14 thereon moves downward relative to the lifting rod 10, and the connecting rod 14 drives the moving block 12 to move downward, and the moving block 12 compresses the spring 13. During the operation of the motor 19, the bearing 22 will vibrate. By setting the spring 13, the spring 13 can push the thermistor 15 to always contact the outer surface of the bearing 22, thereby achieving the stability of temperature measurement and helping to improve the accuracy of temperature measurement.

[0020] See also Figure 3-4 As shown, a control panel 16 is installed on the base 1, and the control panel 16 is connected to the thermistor 15 through a wire. An alarm light 17 is installed on the fixing plate 2, and the alarm light 17 is connected to the control panel 16 through a wire. A base 18 is installed on the base 1, and a motor 19 is installed on the base 18. An end cover 20 is installed on the motor 19, and an axial hole is opened on the end cover 20. A rotating shaft 21 is installed on the motor 19, and the rotating shaft 21 passes through the end cover 20. A bearing 22 is installed on the rotating shaft 21, and the bearing 22 is located between the axial hole of the end cover 20 and the rotating shaft 21; when working, the existing temperature measuring device cannot send out a warning signal in time, which is easy to cause failure or damage caused by overheating of the bearing 22, resulting in low safety. The thermistor 15 contacts the bearing 22. The thermistor 15 is a sensitive element. The resistance value of the thermistor 15 increases with the increase of temperature. This characteristic enables the thermistor 15 to convert temperature changes into changes in resistance values, thereby realizing temperature detection;

[0021] When the temperature changes, the change in the resistance of the thermistor 15 will affect the current and voltage of the entire circuit, thereby reflecting the change in temperature. The control panel 16 monitors the temperature of the bearing 22. When the temperature of the bearing 22 exceeds the set threshold, the control panel 16 will control the alarm light 17 to turn on, thereby providing a prompt for overheating of the bearing 22, avoiding failure or damage caused by overheating, and helping to improve safety.

[0022] Working principle: In the process of measuring the temperature of the motor 19 bearing 22 by the existing temperature measuring device, the motor 19 will drive the bearing 22 to vibrate during operation, which is easy to make the temperature measuring structure loose, resulting in poor accuracy of temperature measurement. By installing the fixing plate 2 under the motor 19, the thermistor 15 is located under the bearing 22, and the knob 8 is turned to drive the worm 7 to rotate, the worm 7 drives the worm wheel 6 to rotate, the worm wheel 6 drives the lead screw 5 to rotate, the lead screw 5 drives the slider 9 thereon to move vertically upward, and the slider 9 drives the lifting rod thereon The lifting rod 10 moves vertically upward, and the lifting rod 10 drives the thermistor 15 thereon to move vertically upward until the thermistor 15 contacts the bearing 22, thereby realizing the position adjustment of the thermistor 15, so that the thermistor 15 can contact the bearing 22 of the motor 19 of different models; then the lifting rod 10 continues to move vertically upward, the thermistor 15 contacts the bearing 22 and remains stationary, and the connecting rod 14 thereon moves downward relative to the lifting rod 10, and the connecting rod 14 drives the moving block 12 to move downward, and the moving block 12 presses the spring 13 The bearing 22 is compressed during operation of the motor 19, and the bearing 22 vibrates. The spring 13 is provided so that the spring 13 can push the thermistor 15 to always contact the outer surface of the bearing 22, thereby achieving the stability of temperature measurement and improving the accuracy of temperature measurement. The existing temperature measuring device cannot issue a warning signal in time, which is easy to cause failure or damage caused by overheating of the bearing 22, resulting in low safety. The thermistor 15 contacts the bearing 22. The thermistor 15 is a sensitive element. The resistance value of the thermistor 15 increases with the increase of temperature. This characteristic enables the thermistor 15 to convert temperature changes into changes in resistance values, thereby realizing temperature detection. When the temperature changes, the change in resistance value of the thermistor 15 will affect the current and voltage of the entire circuit, thereby reflecting the temperature change. The control panel 16 monitors the temperature of the bearing 22. When the temperature of the bearing 22 exceeds the set threshold value, the control panel 16 will control the alarm light 17 to turn on, thereby realizing the prompt of overheating of the bearing 22, avoiding failure or damage caused by overheating, and improving safety.

[0023] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A motor bearing temperature measuring device, characterized in that The invention comprises a base (1), a fixing plate (2) is installed on the base (1), a mounting block (3) is installed on the fixing plate (2), a slide groove (4) is provided in the mounting block (3), a screw rod (5) is rotatably installed between the inner walls of the slide groove (4), a worm wheel (6) is fixedly sleeved on the screw rod (5), a worm (7) is rotatably installed on the inner wall of the slide groove (4), the worm (7) passes through the side wall of the mounting block (3) and is welded with a knob (8), the worm (7) is meshed with the worm wheel (6), a slider (9) is installed in the slide groove (4), the slider (9) is sleeved on the outer periphery of the screw rod (5), and a thread is provided on the slider (9). The slider (9) slides in cooperation with the lead screw (5) through a thread, a lifting rod (10) is welded on the slider (9), a rod hole is provided on the top plate of the mounting block (3), the lifting rod (10) passes through the rod hole, a moving groove (11) is provided inside the lifting rod (10), a moving block (12) is installed in the moving groove (11), a spring (13) is installed between the bottom side of the moving block (12) and the inner wall of the moving groove (11), a connecting rod (14) is installed on the top side of the moving block (12), a rod hole is provided on the top plate of the lifting rod (10), the lifting rod (10) passes through the rod hole, and a thermistor (15) is installed on the top side of the lifting rod (10).

2. A motor bearing temperature measuring device according to claim 1, characterized in that: A control panel (16) is installed on the base (1), and the control panel (16) is connected to the thermistor (15) via a wire.

3. The motor bearing temperature measuring device according to claim 1, characterized in that: An alarm light (17) is installed on the fixing plate (2), and the alarm light (17) is connected to the control panel (16) via a wire.

4. The motor bearing temperature measuring device according to claim 1, characterized in that: A base (18) is mounted on the base (1), a motor (19) is mounted on the base (18), and an end cover (20) is mounted on the motor (19).

5. A motor bearing temperature measuring device according to claim 4, characterized in that: The end cover (20) is provided with an axial hole, and the motor (19) is provided with a rotating shaft (21), and the rotating shaft (21) passes through the end cover (20).

6. A motor bearing temperature measuring device according to claim 5, characterized in that: A bearing (22) is mounted on the rotating shaft (21), and the bearing (22) is located between the shaft hole of the end cover (20) and the rotating shaft (21).

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