CN205400814U - Mining reduction gear monitoring devices - Google Patents
Mining reduction gear monitoring devices Download PDFInfo
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- CN205400814U CN205400814U CN201620142351.0U CN201620142351U CN205400814U CN 205400814 U CN205400814 U CN 205400814U CN 201620142351 U CN201620142351 U CN 201620142351U CN 205400814 U CN205400814 U CN 205400814U
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Abstract
The utility model discloses a mining reduction gear monitoring devices, carry out the serial communication module of communicating with being used for with the host computer including singlechip and liquid crystal touch screen, the input termination of singlechip has button operating circuit, temperature sensor, noise sensor and gas detection module to and level sensor and current detection module, the output termination of singlechip has acousto -optic warning circuit, relay drive circuit and the module of airing exhaust, gas detection module includes a gas sensor and a AD converter, current detection module is including the current sensor, ac - DC converter circuit and the 2nd AD converter that meet in proper order, the module of airing exhaust includes direct current motor module and fan. The utility model relates to a simple structure realizes the real -time supervision to the gas strength isoparametric among operating temperature, level of noise, oil level, operating current and its operational environment of mining reduction gear, masters the operating condition of mining reduction gear in real time, convenient to popularize and use.
Description
Technical field
This utility model belongs to mine speed reducer security technology area, is specifically related to a kind of mine speed reducer monitoring device.
Background technology
Decelerator is a kind of power drive mechanism, the head of drag conveyor and have decelerator in tail, coal-winning machine, elevator, and decelerator has been widely used in colliery.As the work equipment that underground coal mine is important, the operation in whole colliery is played significant role by its safety and stability, not only affect the economic benefit in colliery or the effective guarantee of surrounding work human life safety, therefore the monitoring of mine speed reducer and diagnosis are had highly important meaning.The working condition of underground coal mine is relatively more severe, and down-hole smoke and coal dust easily cause the blocking of decelerator venthole, makes decelerator heat radiation poor, and the smog therefore coal dust around decelerator caused detects, and is very important.Secondly, in the course of the work, gear, bearing etc. to engage decelerator, fricting movement produces substantial amounts of heat, and decelerator is overheated not only affects the properly functioning of equipment, has an effect on the service life of equipment, situation seriously also can be accidents caused, threatens the life security of miner.And the more employing cooling water of decelerator carries out radiating and cooling at present, but its structure is complicated, it is impossible to extensive use.Furthermore, if the oil level in decelerator is higher than when requiring oil level, then the oil in fuel tank will by revolving meber vigorous agitations such as gears, lubricating oil is splashes in casing, substantial amounts of lubricating oil can be made to accumulate in spindle nose sealing, faying face etc., cause leakage of oil, and oil mass is too much unfavorable for heat radiation；If the oil level of decelerator is too low, then can not reduce frictional resistance and make decelerator smooth movements.It addition, gear self-excited vibration can be caused to produce noise at decelerator middle gear forced vibration or gear tooth friction, if the flank of tooth and gear protection can not be carried out in time, the damage of decelerator parts can be caused.Finally, in order to monitor the operation conditions of decelerator, it should be ensured that decelerator is operated in rated power, the whether normal operation conditions being related to equipment of electric current, if the operating current of decelerator is excessive, can cause the damage of decelerator, make work equipment paralyse.Therefore, the mine speed reducer monitoring device of a kind of simple in construction, monitoring reasonable in design, real-time is nowadays lacked, it is ensured that equipment safety and stability.
Utility model content
Technical problem to be solved in the utility model is in that for above-mentioned deficiency of the prior art, a kind of mine speed reducer monitoring device is provided, it designs simple in construction, it is convenient to realize, functional reliability is high, it is achieved to the isoparametric real-time monitoring of the gas concentration in mine speed reducer operating temperature, level of noise, oil level, operating current and its working environment, facilitate staff to grasp the operating condition of mine speed reducer in real time, practical, it is simple to promote the use of.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of mine speed reducer monitoring device, it is characterized in that: include single-chip microcomputer, and the liquid crystal touch screen connected with single-chip microcomputer and the serial communication modular for communicating with host computer, the input of described single-chip microcomputer is connected to button operation circuit, for detecting the temperature sensor of mine speed reducer operating temperature, for detecting the sensor noise of mine speed reducer rated load operation level of noise and for detecting the gas detection module of gas concentration in mine speed reducer working environment, and for detecting the current detection module of mine speed reducer operating current and for detecting the liquid level sensor of mine speed reducer oil level, the outfan of described single-chip microcomputer is connected to sound light alarming circuit, relay drive circuit and for reducing the air draft module of mine speed reducer operating temperature；Described gas detection module includes gas sensor and the first A/D converter connected with described gas sensor outfan, described current detection module includes the current sensor, ac-dc converter circuit and the second A/D converter that connect successively, described air draft module includes direct current generator module and the fan being arranged in described direct current generator module rotating shaft, the outfan of described first A/D converter and the outfan of the second A/D converter all connect with the input of single-chip microcomputer, and the described input of direct current generator module connects with the outfan of single-chip microcomputer；Described single-chip microcomputer includes chip STC89C52.
Above-mentioned a kind of mine speed reducer monitoring device, it is characterised in that: described temperature sensor includes temperature sensor TS318, and described sensor noise includes noise transducer GSD130.
Above-mentioned a kind of mine speed reducer monitoring device, it is characterized in that: described gas sensor includes MQ-2 gas sensor, 5th pin and the link of the 6th pin of described MQ-2 gas sensor connect with one end of resistance R1, the other end of described resistance R1 divides three tunnels, one tunnel connects with swept resistance R10 fixing end, another road connects with the sliding end of swept resistance R10, and the 3rd tunnel connects with one end of resistance R2；2nd pin of described MQ-2 gas sensor divides two-way, a road ground connection, and another road connects with another fixing end of swept resistance R10.
Above-mentioned a kind of mine speed reducer monitoring device, it is characterized in that: described first A/D converter includes the chip U2 that model is ADC0832,2nd pin of described chip U2 connects with the other end of resistance R2,1st pin of described chip U2 connects with the 3rd pin of chip STC89C52,7th pin of described chip U2 connects with the 1st pin of chip STC89C52, and the 5th pin and the link of the 6th pin of described chip U2 connect with the 2nd pin of chip STC89C52.
Above-mentioned a kind of mine speed reducer monitoring device, it is characterised in that: described current sensor includes BLF600-S7 current sensor；Described ac-dc converter circuit includes chip LTC1966,2nd pin of described chip LTC1966 connects with a signal output part of BLF600-S7 current sensor, the 3rd another signal output part drawing foot meridian capacitor C4 and BLF600-S7 current sensor of chip LTC1966 connects, the 8th pin ground connection of described chip LTC1966,5th pin of described chip LTC1966 divides two-way, one tunnel connects with one end of electric capacity C5, and another road connects with one end of resistance R4.
Above-mentioned a kind of mine speed reducer monitoring device, it is characterized in that: described second A/D converter includes the chip U3 that model is ADC0832,1st pin of described chip U3 connects with the 24th pin of chip STC89C52,5th pin and the link of the 6th pin of described chip U3 connect with the 22nd pin of chip STC89C52,7th pin of described chip U3 connects with the 23rd pin of chip STC89C52,3rd pin of described chip U3 connects with the link of the 5th pin of chip LTC1966 and one end of resistance R4, the other end ground connection of described resistance R4.
Above-mentioned a kind of mine speed reducer monitoring device, it is characterised in that: described liquid level sensor includes BT-606 fuel level sensor.
Above-mentioned a kind of mine speed reducer monitoring device, it is characterised in that: described serial communication modular includes chip MAX485.
Above-mentioned a kind of mine speed reducer monitoring device, it is characterized in that: described sound light alarming circuit includes audion Q1 and speaker LS1, the emitter stage of described audion Q1 connects with 5V power output end, the base stage of audion Q1 connects through the 16th pin of resistance R7 and chip STC89C52, the colelctor electrode of audion Q1 divides two-way, one tunnel connects with the anode of light emitting diode D1, and another road connects with one end of speaker LS1；The negative electrode of described light emitting diode D1 connects through the other end of resistance R5 with speaker LS1.
This utility model compared with prior art has the advantage that
1, this utility model is by arranging temperature sensor, current detection module and gas detection module, realize the real-time monitoring of gas concentration in the operating temperature of mine speed reducer, operating current and working environment, avoid that mine speed reducer temperature is too high, operating current is excessive and the blocking of venthole, ensure mine speed reducer safe and stable operation, circuit is simple, it is simple to promote the use of.
2, this utility model is by arranging liquid level sensor, oil level in mine speed reducer is detected in real time, avoid oil level more than high oil level threshold value on the one hand, oil in fuel tank splashes and makes the sealing of decelerator spindle nose, faying face blocking, avoid oil level less than low oil level threshold value on the other hand, the frictional force making decelerator increases, and its detecting device is simple and ensures the smooth movements of mine speed reducer, and result of use is good.
3, this utility model is by arranging sensor noise, the level of noise of mine speed reducer rated load operation is detected in real time, it is possible to avoid the abrasion of mine speed reducer middle gear.
4, this utility model is by arranging liquid crystal touch screen, information detected by temperature sensor, sensor noise, gas detection module and current detection module is shown in real time, by serial communication modular, the synchronizing information detected is transferred to host computer simultaneously, general work personnel control easily, circuit is reliable and stable, it is simple to monitoring.
In sum, this utility model design simple in construction, it is convenient to realize, functional reliability is high, realize the isoparametric real-time monitoring of the gas concentration in the operating temperature of mine speed reducer, level of noise, oil level, operating current and its working environment, staff is facilitated to grasp the operating condition of mine speed reducer in real time, practical, it is simple to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of this utility model single-chip microcomputer.
Fig. 3 is the circuit connecting relation schematic diagram of this utility model gas sensor and the first A/D converter.
Fig. 4 is the circuit connecting relation schematic diagram of this utility model ac-dc converter circuit and the second A/D converter.
Fig. 5 is the circuit theory diagrams of this utility model sound light alarming circuit.
Description of reference numerals:
1 single-chip microcomputer；2 temperature sensors；3 sensor noises；
4-1 gas sensor；4-2 the first A/D converter；5-1 current sensor；
5-2 ac-dc converter circuit；5-3 the second A/D converter；6 button operation circuit；
7 liquid level sensors；8-1 serial communication modular；8-2 host computer；
9-1 direct current generator module；9-2 fan；10 relay driving module；
11 sound light alarming circuits；12 liquid crystal touch screens.
Detailed description of the invention
As depicted in figs. 1 and 2, this utility model includes single-chip microcomputer 1, and the liquid crystal touch screen 12 connected with single-chip microcomputer 1 and for the host computer 8-2 serial communication modular 8-1 communicated, the input of described single-chip microcomputer 1 is connected to button operation circuit 6, for detecting the temperature sensor 2 of mine speed reducer operating temperature, for detecting the sensor noise 3 of mine speed reducer rated load operation level of noise and for detecting the gas detection module of gas concentration in mine speed reducer working environment, and for detecting the current detection module of mine speed reducer operating current and for detecting the liquid level sensor 7 of mine speed reducer oil level, the outfan of described single-chip microcomputer 1 is connected to sound light alarming circuit 11, relay drive circuit 10 and for reducing the air draft module of mine speed reducer operating temperature；Described gas detection module includes gas sensor 4-1 and the first A/D converter 4-2 connected with described gas sensor 4-1 outfan, described current detection module includes the current sensor 5-1 connected successively, ac-dc converter circuit 5-2 and the second A/D converter 5-3, described air draft module includes direct current generator module 9-1 and the fan 9-2 being arranged in described direct current generator module 9-1 rotating shaft, the outfan of described first A/D converter 4-2 and the outfan of the second A/D converter 5-3 all connect with the input of single-chip microcomputer 1, the input of described direct current generator module 9-1 connects with the outfan of single-chip microcomputer 1；Described single-chip microcomputer 1 includes chip STC89C52.
In the present embodiment, described relay drive circuit 10 includes relay, and the normally closed electric shock of described relay is serially connected in the current supply circuit of mine speed reducer.
In the present embodiment, described temperature sensor 2 includes temperature sensor TS318.
In the present embodiment, described sensor noise 3 includes noise transducer GSD130.
As shown in Figure 3, in the present embodiment, described gas sensor 4-1 includes MQ-2 gas sensor, 5th pin and the link of the 6th pin of described MQ-2 gas sensor connect with one end of resistance R1, the other end of described resistance R1 divides three tunnels, one tunnel connects with swept resistance R10 fixing end, and another road connects with the sliding end of swept resistance R10, and the 3rd tunnel connects with one end of resistance R2；2nd pin of described MQ-2 gas sensor divides two-way, a road ground connection, and another road connects with another fixing end of swept resistance R10.
During physical cabling, the 1st pin of described MQ-2 gas sensor, the 3rd pin and the 4th pin all connect with 5V power output end.
As shown in Figure 3, in the present embodiment, described first A/D converter 4-2 includes the chip U2 that model is ADC0832,2nd pin of described chip U2 connects with the other end of resistance R2,1st pin of described chip U2 connects with the 3rd pin of chip STC89C52,7th pin of described chip U2 connects with the 1st pin of chip STC89C52, and the 5th pin and the link of the 6th pin of described chip U2 connect with the 2nd pin of chip STC89C52.
In the present embodiment, described current sensor 5-1 includes BLF600-S7 current sensor.
As shown in Figure 4, in the present embodiment, described ac-dc converter circuit 5-2 includes chip LTC1966,2nd pin of described chip LTC1966 connects with a signal output part Port1 of BLF600-S7 current sensor, the 3rd of chip LTC1966 is drawn another signal output part Port2 of foot meridian capacitor C4 and BLF600-S7 current sensor and is connected, the 8th pin ground connection of described chip LTC1966,5th pin of described chip LTC1966 divides two-way, one tunnel connects with one end of electric capacity C5, and another road connects with one end of resistance R4.
During physical cabling, the 1st pin of described chip LTC1966 and the 4th equal ground connection of pin, the 7th pin of described chip LTC1966 connects with 5V power output end and through electric capacity C6 ground connection, gets rid of the interference signal of power supply.
As shown in Figure 4, in the present embodiment, described second A/D converter 5-3 includes the chip U3 that model is ADC0832,1st pin of described chip U3 connects with the 24th pin of chip STC89C52,5th pin and the link of the 6th pin of described chip U3 connect with the 22nd pin of chip STC89C52,7th pin of described chip U3 connects with the 23rd pin of chip STC89C52,3rd pin of described chip U3 connects with the link of the 5th pin of chip LTC1966 and one end of resistance R4, the other end ground connection of described resistance R4.
During physical cabling, the 8th pin of described chip U3 connects with 5V power output end, the 4th pin ground connection of described chip U3.
In the present embodiment, described liquid level sensor 7 includes BT-606 fuel level sensor.
In the present embodiment, described serial communication modular 8-1 includes chip MAX485.
As shown in Figure 5, in the present embodiment, described sound light alarming circuit 11 includes audion Q1 and speaker LS1, the emitter stage of described audion Q1 connects with 5V power output end, the base stage of audion Q1 connects through the 16th pin of resistance R7 and chip STC89C52, the colelctor electrode of audion Q1 divides two-way, and a road connects with the anode of light emitting diode D1, and another road connects with one end of speaker LS1；The negative electrode of described light emitting diode D1 connects through the other end of resistance R5 with speaker LS1.
When this utility model uses, by button operation circuit 6, connecting the power supply of mine speed reducer, mine speed reducer enters duty.nullTemperature threshold is preset by liquid crystal touch screen 12、Gas concentration threshold、Current threshold、High oil level threshold value、Low oil level threshold value and noise threshold，Sensor noise 3 detects the level of noise of mine speed reducer rated load operation in real time and sends the level of noise collected to single-chip microcomputer 1，Temperature sensor 2 detects the operating temperature of mine speed reducer in real time and sends the temperature value collected to single-chip microcomputer 1，Gas sensor 4-1 detects the gas concentration in mine speed reducer working environment in real time and the gas concentration signal collected is sent into the first A/D converter 4-2，First A/D converter 4-2 receives the gas concentration signal of gas sensor 4-1 output，Complete the analogue signal conversion to digital signal，And the digital gas concentration signal after conversion is sent to single-chip microcomputer 1，Current sensor 5-1 detects the operating current of mine speed reducer in real time and sends the alternating-current detection signal collected to ac-dc converter circuit 5-2，Ac-dc converter circuit 5-2 receives the alternating-current detection signal of current sensor 5-1 output，Complete the alternating-current detection signal conversion to d. c. voltage signal，And the d. c. voltage signal after conversion is sent into the second A/D converter 5-3，Second A/D converter 5-3 receives the d. c. voltage signal of ac-dc converter circuit 5-2 output，Be converted to the accessible digital information of single-chip microcomputer 1 and the digital current values after conversion is sent to single-chip microcomputer 1，Liquid level sensor 7 detects the oil level of mine speed reducer in real time and sends the oil level collected to single-chip microcomputer 1，The temperature value received and predetermined temperature threshold value are compared by single-chip microcomputer，When the temperature value that temperature sensor 2 collects is more than temperature threshold，Single-chip microcomputer 1 controls direct current generator module 9-1 work，The fan 9-2 being arranged in direct current generator module 9-1 rotating shaft is driven to rotate，Air discharging and radiating is carried out for mine speed reducer；The gas concentration received and gas concentration threshold set in advance are compared by single-chip microcomputer, when the gas sensor 4-1 gas concentration collected is more than gas concentration threshold, single-chip microcomputer 1 controls sound light alarming circuit 11 and works, sending acousto-optic or voice message, investigation mine speed reducer venthole is with or without blocking to remind staff to note；The level of noise received and digital current values are compared by single-chip microcomputer respectively with noise threshold set in advance and current threshold, when the digital current values that the level of noise that sensor noise 3 detects collects more than level of noise set in advance or current sensor 5-1 is more than current threshold, single-chip microcomputer 1 controls relay drive circuit 10 and works, the normally closed electric shock of relay in relay drive circuit 10 disconnects, disconnecting the current supply circuit of mine speed reducer, mine speed reducer quits work；The oil level received is compared by single-chip microcomputer with high oil level threshold value set in advance and low oil level threshold value, when the oil level that the oil level that liquid level sensor 7 collects collects more than high oil level threshold value or liquid level sensor 7 is less than low oil level threshold value, single-chip microcomputer 1 controls sound light alarming circuit 11 and works, send acousto-optic or voice message, to staff's prompting message, guarantee that the oil level of mine speed reducer is in OK range, it is ensured that mine speed reducer normal operation.Additionally, single-chip microcomputer 1 controls liquid crystal touch screen 12 and temperature value, gas concentration, digital current values, oil level and level of noise is shown in real time, and by serial communication modular 8-1, the information such as the temperature value of detection, gas concentration, digital current values, oil level and level of noise are sent into host computer 8-2, general work personnel remote monitor, easy to operate easily.
The above; it it is only preferred embodiment of the present utility model; not this utility model is imposed any restrictions; every any simple modification, change and equivalent structure change above example made according to this utility model technical spirit, all still falls within the protection domain of technical solutions of the utility model.
Claims (9)
- null1. a mine speed reducer monitoring device，It is characterized in that: include single-chip microcomputer (1)、And the liquid crystal touch screen (12) connected with single-chip microcomputer (1) and the serial communication modular (8-1) for communicating with host computer (8-2)，The input of described single-chip microcomputer (1) is connected to button operation circuit (6)、For detecting the temperature sensor (2) of mine speed reducer operating temperature、For detecting the sensor noise (3) of mine speed reducer rated load operation level of noise and for detecting the gas detection module of gas concentration in mine speed reducer working environment，And for detecting the current detection module of mine speed reducer operating current and for detecting the liquid level sensor (7) of mine speed reducer oil level，The outfan of described single-chip microcomputer (1) is connected to sound light alarming circuit (11)、Relay drive circuit (10) and for reducing the air draft module of mine speed reducer operating temperature；Described gas detection module includes gas sensor (4-1) and the first A/D converter (4-2) connected with described gas sensor (4-1) outfan, described current detection module includes the current sensor (5-1) connected successively, ac-dc converter circuit (5-2) and the second A/D converter (5-3), described air draft module includes direct current generator module (9-1) and the fan (9-2) being arranged in the rotating shaft of described direct current generator module (9-1), the outfan of described first A/D converter (4-2) and the outfan of the second A/D converter (5-3) all connect with the input of single-chip microcomputer (1), the input of described direct current generator module (9-1) connects with the outfan of single-chip microcomputer (1)；Described single-chip microcomputer (1) includes chip STC89C52.
- 2. a kind of mine speed reducer monitoring device described in claim 1, it is characterised in that: described temperature sensor (2) includes temperature sensor TS318, and described sensor noise (3) includes noise transducer GSD130.
- 3. a kind of mine speed reducer monitoring device described in claim 1, it is characterized in that: described gas sensor (4-1) includes MQ-2 gas sensor, 5th pin and the link of the 6th pin of described MQ-2 gas sensor connect with one end of resistance R1, the other end of described resistance R1 divides three tunnels, one tunnel connects with swept resistance R10 fixing end, another road connects with the sliding end of swept resistance R10, and the 3rd tunnel connects with one end of resistance R2；2nd pin of described MQ-2 gas sensor divides two-way, a road ground connection, and another road connects with another fixing end of swept resistance R10.
- 4. a kind of mine speed reducer monitoring device described in claim 3, it is characterized in that: described first A/D converter (4-2) includes the chip U2 that model is ADC0832,2nd pin of described chip U2 connects with the other end of resistance R2,1st pin of described chip U2 connects with the 3rd pin of chip STC89C52,7th pin of described chip U2 connects with the 1st pin of chip STC89C52, and the 5th pin and the link of the 6th pin of described chip U2 connect with the 2nd pin of chip STC89C52.
- 5. a kind of mine speed reducer monitoring device described in claim 1, it is characterised in that: described current sensor (5-1) includes BLF600-S7 current sensor；Described ac-dc converter circuit (5-2) includes chip LTC1966,2nd pin of described chip LTC1966 connects with a signal output part of BLF600-S7 current sensor, the 3rd another signal output part drawing foot meridian capacitor C4 and BLF600-S7 current sensor of chip LTC1966 connects, the 8th pin ground connection of described chip LTC1966,5th pin of described chip LTC1966 divides two-way, one tunnel connects with one end of electric capacity C5, and another road connects with one end of resistance R4.
- 6. a kind of mine speed reducer monitoring device described in claim 5, it is characterized in that: described second A/D converter (5-3) includes the chip U3 that model is ADC0832, 1st pin of described chip U3 connects with the 24th pin of chip STC89C52, 5th pin and the link of the 6th pin of described chip U3 connect with the 22nd pin of chip STC89C52, 7th pin of described chip U3 connects with the 23rd pin of chip STC89C52, 3rd pin of described chip U3 connects with the link of the 5th pin of chip LTC1966 and one end of resistance R4, the other end ground connection of described resistance R4.
- 7. a kind of mine speed reducer monitoring device described in claim 1, it is characterised in that: described liquid level sensor (7) includes BT-606 fuel level sensor.
- 8. a kind of mine speed reducer monitoring device described in claim 1, it is characterised in that: described serial communication modular (8-1) includes chip MAX485.
- 9. a kind of mine speed reducer monitoring device described in claim 1, it is characterized in that: described sound light alarming circuit (11) includes audion Q1 and speaker LS1, the emitter stage of described audion Q1 connects with 5V power output end, the base stage of audion Q1 connects through the 16th pin of resistance R7 and chip STC89C52, the colelctor electrode of audion Q1 divides two-way, one tunnel connects with the anode of light emitting diode D1, and another road connects with one end of speaker LS1；The negative electrode of described light emitting diode D1 connects through the other end of resistance R5 with speaker LS1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620142351.0U CN205400814U (en) | 2016-02-25 | 2016-02-25 | Mining reduction gear monitoring devices |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620142351.0U CN205400814U (en) | 2016-02-25 | 2016-02-25 | Mining reduction gear monitoring devices |
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| CN205400814U true CN205400814U (en) | 2016-07-27 |
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| CN201620142351.0U Expired - Fee Related CN205400814U (en) | 2016-02-25 | 2016-02-25 | Mining reduction gear monitoring devices |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124205A (en) * | 2016-08-29 | 2016-11-16 | 孟玲 | A kind of decelerator health analysis system |
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2016
- 2016-02-25 CN CN201620142351.0U patent/CN205400814U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124205A (en) * | 2016-08-29 | 2016-11-16 | 孟玲 | A kind of decelerator health analysis system |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20170225 |