CN202374124U - Motor and insulated armored bearing temperature measuring sensor thereof - Google Patents
Motor and insulated armored bearing temperature measuring sensor thereof Download PDFInfo
- Publication number
- CN202374124U CN202374124U CN2011205485424U CN201120548542U CN202374124U CN 202374124 U CN202374124 U CN 202374124U CN 2011205485424 U CN2011205485424 U CN 2011205485424U CN 201120548542 U CN201120548542 U CN 201120548542U CN 202374124 U CN202374124 U CN 202374124U
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- Prior art keywords
- bearing
- sensor
- measuring temperature
- temperature measuring
- temperature
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Abstract
The utility model discloses an insulated armored bearing temperature measuring sensor. The insulated armored bearing temperature measuring sensor is provided with a temperature measuring probe which is embedded in a bearing sleeve of a motor and provided with temperature measuring elements, and a lead which is used for transmitting a signal detected by the temperature measuring probe to external and provided with two sections of metal protection sleeves; the insulated armored bearing temperature measuring sensor is characterized in that the bearing temperature measuring sensor is further provided with an insulated section; and the two sections of metal protection sleeves are mutually connected through the insulated section. In the utility model, the insulated section is arranged on the protection sleeve of the lead of the bearing temperature measuring sensor, so that the shaft current does not form a passage through the metal protection sleeves of the bearing temperature measuring sensor; the passage of the shaft current generated by shaft voltage at two ends of the rotary shaft of the motor is cut off; the insulation efficiency of an insulation layer between the bearing sleeve and an end cover is ensured; and the service life of the bearing is prolonged. The utility model further discloses a motor comprising the bearing temperature measuring sensor.
Description
Technical field
The utility model relates to technical field of motors, particularly a kind of motor and insulation armored sensor for measuring temperature of bearing thereof.
Background technology
Motor has the bearing of rotating shaft and rotating shaft cooperation, and the end cap that is positioned at the bearing end.In some medium-and-large-sized motor of inverter power supply or the power supply of unskilled labor frequency sine-wave power supply; Because motor adopts segmental punching; Add the existence of structure divisions such as iron core slot, ventilation hole; Make to have unbalanced magnetic resistance in the magnetic circuit, and alternating flux cutting rotating shaft is arranged around rotating shaft, so can induce shaft voltage at the two ends of rotating shaft; The buncher that perhaps adopts converter technology to supply power is because the existence of distributed capacitance and the incentive action of high-frequency impulse input voltage form the coupling common-mode voltage on the machine shaft.The shaft current that the voltage at above-mentioned rotating shaft two ends produces can be passed through bearing, and the path of shaft current is rotating shaft-bearing-bearing holder (housing, cover)-end cap-support, because the useful life of bearing has been shortened in passing through of shaft current.In the prior art,, between bearing holder (housing, cover) and end cap, install insulating barrier additional usually, promptly form the insulation bearing cover, to cut off the path of shaft current in order to eliminate shaft current.
In motor operation course; In order to monitor the running status of motor, need to detect in real time the temperature of bearing, so be provided with the measuring temperature of bearing element in the motor; The measuring temperature of bearing element is embedded in the very near position of distance axis bearing outer-ring; Usually the measuring temperature of bearing element runs through end cap, and inserts in the bearing holder (housing, cover), and the lead-in wire of temperature probe signal transmission has metal protection protector in the measuring temperature of bearing element.Yet because metal protection protector has electric conductivity, the shaft current at rotating shaft two ends can form path again through the protective sleeve of measuring temperature of bearing element, insulating barrier short circuit and losing efficacy.
In view of this, how improving the structure of measuring temperature of bearing element, keep the performance of insulating barrier, prevent that shaft current from influencing the useful life of bearing, is those skilled in the art's technical issues that need to address.
The utility model content
The purpose of the utility model is for providing a kind of insulation armored sensor for measuring temperature of bearing; Has insulating segment on this temperature transducer; Can break off the path of shaft current of rotating shaft-bearing holder (housing, cover)-end cap-support, guarantee the insulating effect of insulating barrier between bearing holder (housing, cover) and the end cap, prolong the useful life of bearing.Another purpose of the utility model provides a kind of motor with above-mentioned insulation armored sensor for measuring temperature of bearing.
For reaching first purpose of the utility model; The utility model provides a kind of insulation armored sensor for measuring temperature of bearing; Have the temperature probe that is embedded in the motor shaft bearing sleeve and has temperature element, the signal that said temperature probe is detected is passed to outside lead-in wire, said lead-in wire has metal protection protector, sensor for measuring temperature of bearing also has insulating segment; Said metal protection protector has two sections, and two sections said metal protection protectors are connected by said insulating segment.
Preferably, also has installing component, the end cap of fixing said sensor for measuring temperature of bearing of said installing component and motor.
Preferably, the two ends of said insulating segment all are inlaid with the metal swivel nut, and the said metal swivel nut at two ends is respectively applied for and connects two sections said metal protection protectors.
Preferably, said protective sleeve is a stainless steel ripple protective sleeve.
Preferably, said temperature element is to be embedded in said temperature probe inner platinum resistance thermometer sensor, or thermocouple.
The metal protection protector of this utility model middle (center) bearing temperature transducer lead-in wire is divided into two sections; Two sections metal protection protectors are broken off by insulating segment; Then shaft current can't form path through the metal protection protector of sensor for measuring temperature of bearing; Then the path of the shaft current of machine shaft two end axles voltage generation is cut off, and guarantees the insulation effectiveness of the insulating barrier between bearing holder (housing, cover) and the end cap, prolongs the useful life of bearing.
For reaching another purpose of the utility model, the utility model also provides a kind of motor, has bearing holder (housing, cover), end cap, and sensor for measuring temperature of bearing, and said sensor for measuring temperature of bearing is above-mentioned each described insulation armored sensor for measuring temperature of bearing.Because above-mentioned insulation armored sensor for measuring temperature of bearing has above-mentioned technique effect, the motor with this sensor for measuring temperature of bearing also has identical technique effect.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of insulation armored sensor for measuring temperature of bearing provided by the present invention;
Fig. 2 is installed on the structural representation at motor shaft bearing sleeve place for insulation armored sensor for measuring temperature of bearing among Fig. 1.
Embodiment
The core of the utility model is for providing a kind of insulation armored sensor for measuring temperature of bearing; Has insulating segment on this temperature transducer; Can break off the path of shaft current of rotating shaft-bearing holder (housing, cover)-end cap-support, guarantee the insulating effect of insulating barrier between bearing holder (housing, cover) and the end cap, prolong the useful life of bearing.Another core of the utility model provides a kind of motor with above-mentioned insulation armored sensor for measuring temperature of bearing.
In order to make those skilled in the art understand the technical scheme of the utility model better, the utility model is done further to specify below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of embodiment of insulation armored sensor for measuring temperature of bearing provided by the present invention.
Insulation armored sensor for measuring temperature of bearing among this embodiment comprises temperature probe 31, and temperature probe 31 inside are provided with temperature element, and temperature element can be PT100 type platinum resistance thermometer sensor, or thermocouple, or other temperature elements commonly used, to realize the thermometric demand.Temperature probe 31 is embedded in the bearing holder (housing, cover) 22, near the outer ring 21 of bearing, so that accurately detect the temperature of bearing in real time.
The signal that temperature probe 31 detects 34 is passed to parts such as controller outside or display through going between, so that operating personnel grasp the temperature of bearing, temperature probe 31 afterbodys shown in Fig. 1 34 are connected with going between.
Please continue with reference to figure 2, Fig. 2 is installed on the structural representation at motor shaft bearing sleeve place for insulation armored sensor for measuring temperature of bearing among Fig. 1, and is except that sensor for measuring temperature of bearing, all shown in broken lines among this figure.
As can beappreciated from fig. 2, end cap 24 is positioned at the end of bearing holder (housing, cover) 22, is provided with insulating barrier 23 between bearing holder (housing, cover) 22 and the end cap 24, and obviously, the lead-in wire 34 of temperature transducer need run through the end cap 24 that is positioned at bearing holder (housing, cover) 22 ends, can be connected with the outside.The lead-in wire 34 of temperature transducer has metal protection protector 32; Metal protection protector 32 can preferably adopt stainless steel ripple protective sleeve; The corrosion resistance of stainless steel ripple protective sleeve is stronger, and has the effect of beautifying outward appearance, can certainly adopt other metal materials to process protective sleeve.
The metal protection protector 32 of the sensor for measuring temperature of bearing among this embodiment is two sections, connects through insulating segment 33 between two sections metal protection protectors 32.As depicted in figs. 1 and 2, stainless steel ripple protective sleeve is connected with insulating segment 33, and insulating segment 33 adopts common insulating material to process.Owing to be provided with insulating segment 33; Two sections metal protection protectors 32 break off; Shaft current can't form path through the metal protection protector 32 of sensor for measuring temperature of bearing, and then the path of the shaft current of machine shaft two end axles voltage generation is cut off, and promptly protective sleeve 32 can not influence the insulating effect of insulating barrier 23; Guarantee the insulation effectiveness of the insulating barrier 23 between bearing holder (housing, cover) 22 and the end cap 24, prolong the useful life of bearing.The two ends of insulating segment 33 can the embedded with metal swivel nut, the metal swivel nut is used to connect two sections metal protection protectors 32, has realized being connected of insulating segment 33 and two sections metal protection protectors 32 easily.
Sensor for measuring temperature of bearing also has installing component 35, and installing component 35 is used for fixing the end cap 24 of sensor for measuring temperature of bearing and motor.As shown in Figure 2; Be provided with installing component 35 between temperature probe 31 and the stainless steel ripple protective sleeve 32, after temperature probe 31 was embedded in the bearing holder (housing, cover) 22, installing component 35 was supporting with the installing hole on the end cap 24; After installing component 35 is installed on the installing hole place; Lead-in wire 34 between temperature probe 31 to the end cap 24 is able to fix, thereby guarantees that temperature probe 31 and lead-in wire 34 are in stable status, and the lead-in wire 34 of installing component 35 rear ends is connected to miscellaneous part.
Except above-mentioned insulation armored sensor for measuring temperature of bearing; The utility model also provides a kind of motor; Have bearing holder (housing, cover) 22, end cap 24; And sensor for measuring temperature of bearing, the temperature probe of sensor for measuring temperature of bearing is embedded in the bearing holder (housing, cover) 22, and said sensor for measuring temperature of bearing is the described insulation armored of an above-mentioned arbitrary embodiment sensor for measuring temperature of bearing.Because above-mentioned insulation armored sensor for measuring temperature of bearing has above-mentioned technique effect, the motor with this insulation armored sensor for measuring temperature of bearing also has identical technique effect, does not give unnecessary details at this.
More than a kind of motor and insulation armored sensor for measuring temperature of bearing thereof that the utility model provided have been carried out detailed introduction.Used concrete example among this paper the principle and the execution mode of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection range of the utility model claim.
Claims (6)
1. insulation armored sensor for measuring temperature of bearing; Have the temperature probe (31) that is embedded in the motor shaft bearing sleeve (22) and has temperature element, the signal that said temperature probe (31) is detected is passed to outside lead-in wire (34); Said lead-in wire (34) has metal protection protector (32), it is characterized in that, sensor for measuring temperature of bearing also has insulating segment (33); Said metal protection protector (32) has two sections, and two sections said metal protection protectors (32) are connected by said insulating segment (33).
2. insulation armored sensor for measuring temperature of bearing according to claim 1 is characterized in that, also has installing component (35), the end cap (24) of fixing said sensor for measuring temperature of bearing of said installing component (35) and motor.
3. insulation armored sensor for measuring temperature of bearing according to claim 2 is characterized in that the two ends of said insulating segment (33) all are inlaid with the metal swivel nut, and the said metal swivel nut at two ends is respectively applied for and connects two sections said metal protection protectors (32).
4. according to each described insulation armored sensor for measuring temperature of bearing of claim 1 to 3, it is characterized in that said protective sleeve (32) is a stainless steel ripple protective sleeve.
5. insulation armored sensor for measuring temperature of bearing according to claim 4 is characterized in that, said temperature element is for being embedded in said temperature probe (31) inner platinum resistance thermometer sensor, or thermocouple.
6. a motor has bearing holder (housing, cover), end cap, and sensor for measuring temperature of bearing, it is characterized in that, said sensor for measuring temperature of bearing is each described insulation armored sensor for measuring temperature of bearing of claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205485424U CN202374124U (en) | 2011-12-23 | 2011-12-23 | Motor and insulated armored bearing temperature measuring sensor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205485424U CN202374124U (en) | 2011-12-23 | 2011-12-23 | Motor and insulated armored bearing temperature measuring sensor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202374124U true CN202374124U (en) | 2012-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205485424U Expired - Lifetime CN202374124U (en) | 2011-12-23 | 2011-12-23 | Motor and insulated armored bearing temperature measuring sensor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202374124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066760A (en) * | 2012-12-28 | 2013-04-24 | 湖南崇德工业科技有限公司 | Locking tooth-type insulation temperature measuring device used for end cap of motor |
-
2011
- 2011-12-23 CN CN2011205485424U patent/CN202374124U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066760A (en) * | 2012-12-28 | 2013-04-24 | 湖南崇德工业科技有限公司 | Locking tooth-type insulation temperature measuring device used for end cap of motor |
| CN103066760B (en) * | 2012-12-28 | 2015-11-11 | 湖南崇德工业科技有限公司 | The tooth-like insulation temperature measurement device of electric motor end cap locking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |