CN102082412A - Gear motor - Google Patents
Gear motor Download PDFInfo
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- CN102082412A CN102082412A CN2010105707237A CN201010570723A CN102082412A CN 102082412 A CN102082412 A CN 102082412A CN 2010105707237 A CN2010105707237 A CN 2010105707237A CN 201010570723 A CN201010570723 A CN 201010570723A CN 102082412 A CN102082412 A CN 102082412A
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- motor
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- gear
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- 230000001012 protector Effects 0.000 claims abstract description 29
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 11
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000012467 final product Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0856—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load characterised by the protection measure taken
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/093—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current with timing means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0853—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load specially adapted for motors rotating in both directions
Landscapes
- Control Of Conveyors (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention provides a gear motor, wherein a driven device driven by the gear motor is prevented from being destroyed by the simple structure of a control device of low cost special for the driven device. The gear motor (G) equipped with a motor (100) and a reducer (101) comprises a monitor unit (105M). The predetermined thresholds (B,C) of the monitor unit are smaller than the rated current value (A) of the output rated torque of the motor (100). The monitor unit detects whether the current (I) of the motor (100) is greater than the predetermined thresholds (B,C) smaller than the rated current value (A) or not. The gear motor also comprises a driven device protector (105). When the current (I) of the motor (100) is greater than the predetermined thresholds (B,C), the protector (105) carries out an alarm (BO,CO) or cuts off the current (I) of the motor (100).
Description
Technical field
The application advocates the priority based on the Japanese patent application of on November 30th, 2009 application 2009-272063 number.The full content of its application is applied in this specification by reference.
The present invention relates to a kind of gear motor, relate in particular to a kind of gear motor that is suitable for most as the purposes such as load change conveyer jumpy of chip conveyer etc.
Background technology
Have shown in Fig. 7 in the past gear motor 1 an example.
Patent documentation 1: No. the 3491201st, Japan Patent (Fig. 1)
Yet, motor protecting device all the time with the protection motor be purpose, be not with the protection conveyer device be purpose.As with the protection conveyer device this as structure of purpose; for example known have; assemble in addition conveyer device when becoming the state of excess load; the rotating shaft that makes conveyer device skids and the excess load protection mechanism that makes it to stop; perhaps in the predetermined rotational time of timer settings, the conveyer belt of conveyer device just changeed repeatedly or reversing motion; and remove the mechanism of the smear metal become the excess load reason etc.; perhaps can between conveyer device main body and drive source, control the structure etc. of excess load control device of special use of the driving condition of this conveyer device, but any structure all needs special-purpose and expensive additional control device to conveyer device.
Summary of the invention
The present invention is in order to address the above problem, with following as problem: can prevent that the driven device that drives by gear motor is destroyed to be exclusively used in driven device and to need not the simple structure of expensive control device.
The present invention is by the above-mentioned problem of following solution, promptly in possessing the gear motor that motor and reductor are arranged, possess: the watch-dog unit, have rated current predetermined threshold mutually on duty, and detection flows to the electric current of described motor above this situation less than rated current predetermined threshold mutually on duty less than the output nominal torque of described motor; And the driven device protector, when the electric current that flows to described motor surpasses described predetermined threshold, give the alarm or block at least one side in the electric current that flows to described motor.
Gear motor involved in the present invention adopts following structure: " gear motor itself " possesses the watch-dog unit, this watch-dog unit does not have the suitable threshold value of current value that gear motor is become excess load, but have " less than " the rated current predetermined threshold mutually on duty of the output nominal torque of motor, and detect the electric current that flows to motor and surpass this predetermined threshold.
In addition, " nominal torque " is meant " breakdown torque that can carry out the continuous running of motor " among the present invention.That is, among the present invention,, also dare to detect the rated current predetermined threshold mutually on duty that whether surpasses less than the output nominal torque of motor even if flow through situation for the fully no problem electric current of gear motor.According to this structure, when the electric current that flows to motor surpasses this predetermined threshold, giving the alarm exists driven device by the danger of breakage to operator's notice, perhaps ends the operation of driven device itself, thereby the breakage of driven device can be taken precautions against in possible trouble.
According to the present invention, the change mechanism of direction of rotation of skid mechanism or conveyer belt that does not need the rotating shaft main body of driven device fully, optional equipments such as the excess load control device of perhaps expensive special use etc. only can be realized identical function by directly assemble " gear motor monomer " in driven device.
The effect of invention
The present invention can prevent that the driven device that drives by gear motor is destroyed to be exclusively used in driven device and to need not the simple structure of expensive control device.
Description of drawings
Fig. 1 is the end view of the related gear motor of an example of embodiments of the present invention.
Fig. 2 is related gear motor of an example of expression embodiments of the present invention and the schematic diagram that passes through the structure of this electric motor driven conveyer device.
Fig. 3 is the circuit diagram of the structure of the related excess load protective device that gear motor possessed of an example of expression embodiments of the present invention.
Fig. 4 is the end view of the terminal box inside of the related gear motor of an example of embodiments of the present invention.
Fig. 5 is the chart of the variation of conduction time of the expression electric current that flows to the related gear motor of an example of embodiments of the present invention and this current value.
Fig. 6 is the chart of the variation of conduction time of the expression electric current that flows to the related gear motor of an example of other execution modes of the present invention and this current value.
Fig. 7 is the schematic diagram of representing gear motor in the past and passing through the structure of this electric motor driven conveyer device.
Among the figure: the 100-motor, the 101-reductor, 105-conveyer protector (driven device protector), 105M-watch-dog unit, the A-rated current is mutually on duty, B, C-predetermined threshold, I-flows to the electric current of motor, the G-gear motor.
Embodiment
Below, describe an example of embodiments of the present invention with reference to the accompanying drawings in detail.
Fig. 1 represents the end view of the gear motor G that an example of embodiments of the present invention is related.
Gear motor G possesses motor 100 is arranged, reductor 101 and terminal box 103.Terminal box 103 is disposed at the side (being upside in Fig. 1) of motor 100.
The power shaft of the motor reel of motor 100 (omit diagram) dual-purpose reductor 101 (omitting diagram) is formed with hypoid pinion (omitting diagram) at the front end of this motor reel.Reductor 101 is for having by the hypoid reductor of hypoid pinion with the parallel-axes gears group (all omitting diagram) that constitutes with the mutually meshing hypoid gear of this hypoid pinion.Therefore, being rotated in when being decelerated of motor 100 changed rotating shaft to orthogonal direction, and exports from the output shaft 101A of reductor 101.
Fig. 2 illustrates the schematic diagram of expression by the structure of the chip conveyer device (driven device) 110 of gear motor G driving.
The output shaft 101A of reductor 101 directly is linked to the sprocket wheel 110A1 of chip conveyer device 110, is directly inputted to the sprocket wheel 110A1 of chip conveyer device 110 from the rotation of the output shaft 101A of reductor 101 output.Because the rotation of sprocket wheel 110A1 is stretched frame (Zhang り crosses The) by sprocket wheel 110A2,110A3,110A4 and become the conveyer belt 110B of predetermined state to be rotated, borings is sent to the precalculated position in the state of conveyer belt 110B with mounting.
Fig. 3 is the circuit diagram of the structure of expression conveyer protector 105.Respectively with 3 mutually circuit 107R, the 107S, the 107T that connect of circuit R, S, the T of power supply 107 in terminal block 103A, be connected with circuit 103U, 103V, 103W respectively. Circuit 103U, 103W are connected in conveyer protector 105, are connected with U, the W of motor 100 from conveyer protector 105 in addition.The circuit 103V that is connected in the V phase of motor 100 is not connected in conveyer protector 105 and is directly connected in the V phase of motor 100.
In addition, what be directly connected in motor is not limited to the V phase mutually, also can be U phase, the W phase of this motor.
Watch-dog unit 105M has the 1st threshold value B, the 2nd threshold value C (predetermined threshold) less than the rated current A mutually on duty of the output nominal torque of motor 100.The 2nd threshold value C is greater than the 1st threshold value B (B＜C＜A).
1st, the 2nd threshold value B, C are not the current values that gear motor G is become excess load, but the chip conveyer device 110 that drives by gear motor G are become the current value of excess load.The 1st threshold value B is used to understand the threshold value that chip conveyer device 110 (do not have damaged and) enters high-load region.The 2nd threshold value C is the threshold value of the high usefulness that stops operation of possibility of breakage when chip conveyer device 110 being applied the load of its above scope.
The ground detection of watch-dog unit 105M multistage flows to the electric current I of motor 100 above the 1st, the 2nd threshold value B, C (specific state) less than rated current A mutually on duty.
When watch-dog unit 105M detected the electric current that flows to motor 100 and surpasses the 1st threshold value B, conveyer protector 105 sent the 1st alarm BO.Constitute as follows: when watch-dog unit 105M detects the electric current that flows to motor 100 and surpasses the 2nd threshold value C, when conveyer protector 105 sends the 2nd alarm CO (different with the 1st alarm BO), block the electric current that flows to motor 100.
Can adopt following method as alarm BO, CO: for example come to go out warning tones from this buzzer sound by set up not shown buzzer at conveyer protector 105; or by showing the warning content at the not shown monitoring lcd device of the shell of motor G assembling etc., or change is embedded in the demonstration look of liquid crystal lamp etc. of the shell of motor G.
So, " the driven device protector " among the present invention has the function that " indication " should give the alarm and gets final product.That is, " driven device protector itself " may not necessarily have and accept this indication and actual sounding or Alarm Display such as buzzer of light etc., lamp, monitoring lcd device.
As above-mentioned execution mode; from finish the control simplification of control with the gear motor monomer; the viewpoint of low cost etc. is considered; preferred driven device protector itself or gear motor itself have these Alarm Displays; but for example gear motor itself be assembled in be difficult to from visual observation to part; or be assembled in when being difficult to hear the part of sound; unit protection device itself also can only produce " indication " that only give the alarm; from output such as connector these, be passed to the Alarm Display that is in away from the position of gear motor by transfer units such as cables.
1st, the 2nd threshold value B, C can variablely set.1st, the setting of the 2nd threshold value B, C for example terminal box 103 inside shown in the end view of terminal box 103 inside by rotation diagram 4 potentiometer 103B and adjust the resistance value that constitutes the 1st, the 2nd threshold value B, C and carry out.
In addition, in the present embodiment, adjust 2 the 1st, the 2nd threshold value by 1 potentiometer, but also can utilize 2 potentiometers, make a side potentiometer can adjust the 1st threshold value, make the opposing party's potentiometer can adjust the 2nd threshold value.
And,, monitor the monitoring that the voltage of locating before and after this part (decline) replaces current value by the part that voltage is descended that inserts in parallel in the drive circuit of motor.In addition, can certainly directly monitor the current value of motor.
This be because, during motor 100 starting, rose to current value D when being higher than general running even flow to the electric current I of this motor 100, the electric current I that watch-dog unit 105M can be not too high with this yet detects as the current value above the 1st, the 2nd threshold value B, C.
Be assembled with the electric circuit that to realize above-mentioned a succession of operation in the conveyer protector 105, perhaps unifunctional microcomputer etc.
Then, with reference to Fig. 5 the effect of gear motor G is described.
Watch-dog unit 105M, since after the starting motor 100 to the time T of timer settings for example through till 2～2.5 seconds, can not begin to flow to the metering of the electric current I of motor 100, even so after motor 100 has just begun action, electric current I surpasses the 1st, the 2nd threshold value B, C and the excessive flow mistake, and watch-dog unit 105M can not detect as the current value that surpasses the 1st, the 2nd threshold value B, C yet.Thus, gear motor G need not stop to get final product continuous running chip conveyer device 110.
After the elapsed time T, the watch-dog unit 105M multistage is detected the situation that the electric current I that flows to motor 100 surpasses the 1st, the 2nd threshold value B, C after motor 100 startings.
At first; when watch-dog unit 105M detected the electric current I that flows to motor 100 and surpasses the 1st threshold value B, the conveyer protector 105 chip conveyer device 110 (do not have damaged and) of giving notice entered the 1st alarm BO (Fig. 5: in fact through the position Bp of duration of about 0.3 second) of high-load region.In addition, the relevant threshold value B that surpasses, confirming to continue about 0.3 second is in order to get rid of because the flase drop that the noise composition of moment carries out survey.It is not general operating condition that the operator can discover chip conveyer device 110 in the utmost point stage early by the 1st alarm BO, and can take to search the countermeasure of its reason etc.If be necessary, also can operator oneself block the electric current of motor 100, chip conveyer device 110 is stopped.For example, be when being blocked in the borings between conveyer belt 110B and the sprocket wheel 110A1～110A4 when the operator is judged as the reason that electric current is risen, can get rid of in this stage.Thus, the excess load or the breakage of chip conveyer device 110 can be taken precautions against in possible trouble.
But, just in case the operator during not realizeing the 1st alarm BO, for example further piles up (metal) smear metal between conveyer belt 110B and sprocket wheel 110A1～110A4, perhaps stop up a large amount of smear metals suddenly, thereby hinder the rotation of conveyer belt 110B sometimes.
Under such situation; the electric current I that flows to motor 100 becomes big; when surpassing the 2nd threshold value C; conveyer protector 105 sends the 2nd alarm CO and this situation of notifying operation person the time; the electric current I that flows to motor 100 from 3 phase power supplys 107 is blocked in pressure; the electric current that flows to motor 110 become 0 (Fig. 5: in fact, in order to prevent flase drop from surveying through the position Cp of duration of about 0.3 second).Its result, chip conveyer device 110 is stopped and is protected.
In addition; when blocking the electric current of motor 100 above the 2nd predetermined threshold C because of the electric current I that flows to motor 100; conveyer protector 105 makes motor 100 temporary transient after the direction β rotation opposite with the direction α of motor 100 rotation before, blocks the electric current I that flows to motor 100 and gets final product.Make motor 100 to rotating to the opposite direction β rotation of direction α that is about to stop by conveyer protector 105 with motor 100; the smear metal of getting between sprocket wheel 110A1～110A4 and the conveyer belt 110B is discharged from easily, and the operator can carry out the maintenance of chip conveyer device 110 easily.
In addition, can consider, because of long-time when using chip conveyer device 110 through the time change etc., the current value D when generally turning round changes.Even in this case, because the 1st, the 2nd threshold value B, C can variablely set, thus can change the 1st, the 2nd threshold value B, the C of conveyer protector 105 according to the variation of current value D, and adjust and produce the period that alarm or power block.And, this gear motor G can also be installed on various driven devices such as conveyer device except that chip conveyer device 110 and for example food garbage processor except that conveyer device, disintegrating machine, mixer, consider the withstand load characteristic of the driven device that drive this moment, also can set once more optimal the 1st, the 2nd threshold value B of this driven device, C.
In addition, in the above-described embodiment, be set as the watch-dog unit and have 2 predetermined thresholds, and the multistage detect the electric current flow to motor and surpass less than rated current particular state mutually on duty, but a plurality of predetermined thresholds may not be set, also can be following structure: when the electric current that flows to motor surpasses single predetermined threshold, can only give the alarm and block immediately and flow to the electric current that arrives motor.
For example; shown in the chart of the variation of conduction time of the electric current that flows to motor of presentation graphs 6 and this current value; also can the watch-dog unit detect the electric current that flows to motor surpass threshold value E after (in fact in order to prevent that flase drop from surveying; position through Fig. 6 of about 0.3 second continuation time: Ep), the driven device protector does not ring alarm etc. and directly blocks the electric current that flows to motor.When the driven device of Assembling gear motor makes this current spikes rising etc. in the major part of the situation that the electric current that flows to motor is risen because of some reason (obstruction of borings etc.), even this structure is also very abundant, at this moment, gear motor can omit the structure that alarm is started, so can further reduce production costs.
On the contrary, also can have predetermined threshold more than 3.And predetermined threshold also can not be to preestablish and fix and can adjust such structure in operation afterwards.
Claims (5)
1. one kind possesses the gear motor that motor and reductor are arranged, and it is characterized in that possessing:
The watch-dog unit has the rated current predetermined threshold mutually on duty less than the output nominal torque of described motor, and detection flows to the electric current of described motor above this situation less than rated current predetermined threshold mutually on duty; And
The driven device protector when the electric current that flows to described motor surpasses described predetermined threshold, gives the alarm or blocks at least one side in the electric current that flows to described motor.
2. gear motor as claimed in claim 1 is characterized in that,
Described predetermined threshold can variablely be set.
3. gear motor as claimed in claim 1 or 2 is characterized in that,
When blocking the electric current that flows to described motor, make described motor temporarily to this motor before the rotation the side rotate in the opposite direction after, block the described electric current that flows to described motor.
4. as each described gear motor in the claim 1 to 3, it is characterized in that,
Described watch-dog unit has 2 the above predetermined thresholds, and the multistage is detected the electric current flow to described motor and surpasses less than rated current particular state mutually on duty.
5. as each described gear motor in the claim 1 to 4, it is characterized in that,
The timer of the scheduled time that described driven device protector begins to set when also possessing metering from described motor starting; after the described motor of starting, through beginning the described electric current of measurement flow after the time with described timer settings to described motor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009272063A JP5941608B2 (en) | 2009-11-30 | 2009-11-30 | Gear motor |
| JP272063/2009 | 2009-11-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102082412A true CN102082412A (en) | 2011-06-01 |
| CN102082412B CN102082412B (en) | 2013-10-16 |
Family
ID=44088197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105707237A Active CN102082412B (en) | 2009-11-30 | 2010-11-30 | Gear motor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5941608B2 (en) |
| KR (1) | KR101217539B1 (en) |
| CN (1) | CN102082412B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6039893B2 (en) | 2011-10-13 | 2016-12-07 | Ｋｙｂ株式会社 | Electric assist cart |
| JP2013192414A (en) | 2012-03-15 | 2013-09-26 | Omron Corp | Drive control device |
| JP6264430B2 (en) * | 2016-11-09 | 2018-01-24 | オムロン株式会社 | Servo system and safety unit |
| JP6642608B2 (en) | 2018-03-19 | 2020-02-05 | 株式会社椿本チエイン | Motor device |
| JP7088241B2 (en) | 2020-08-31 | 2022-06-21 | 株式会社椿本チエイン | Motor equipment, gear motors, detection methods, and computer programs |
| KR102300723B1 (en) * | 2021-02-25 | 2021-09-10 | 김칠현 | Gimbap forming apparatus |
| KR102525279B1 (en) * | 2022-05-04 | 2023-04-27 | 김칠현 | Gimbap and roll forming apparatus |
| KR102669339B1 (en) * | 2022-12-06 | 2024-05-27 | 다올이엔지 주식회사 | Gas Insulated Switchgear Overload trip device for DC motor |
| JP7587871B2 (en) | 2023-03-03 | 2024-11-21 | 株式会社馬渕工業所 | ORC power generation equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000278978A (en) * | 1999-03-23 | 2000-10-06 | Sumitomo Heavy Ind Ltd | Motor overload-preventing device |
| JP2002318043A (en) * | 2001-02-13 | 2002-10-31 | Hoshizaki Electric Co Ltd | Control device of auger type ice making machine |
| JP4098182B2 (en) * | 2003-08-07 | 2008-06-11 | 株式会社日立製作所 | Motor drive system and elevator drive system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59124542A (en) * | 1982-12-28 | 1984-07-18 | Enomoto Kogyo Kk | Chip conveyor |
| JPS61173695A (en) * | 1985-01-25 | 1986-08-05 | Gadelius Kk | Monitor of motor load |
| JPS61173839A (en) * | 1985-01-29 | 1986-08-05 | Sanyu Kogyo Kk | Chip conveyor |
| JPS63144722A (en) * | 1986-12-05 | 1988-06-16 | 日立工機株式会社 | Overload prevention device for power tools |
| JPH02261722A (en) * | 1989-03-31 | 1990-10-24 | Trinity Ind Corp | Operating method of transferrer for chips |
| JPH05118289A (en) * | 1991-09-05 | 1993-05-14 | Ebara Corp | Protection device for vacuum pump |
| JPH05213424A (en) * | 1992-02-07 | 1993-08-24 | Kaneko Agricult Mach Co Ltd | Safety device for grain conveying elevator and the like |
| JP3363934B2 (en) * | 1993-01-27 | 2003-01-08 | 大和製衡株式会社 | Rotational axis misalignment detector |
| US6135268A (en) * | 1997-05-19 | 2000-10-24 | Mazak Corporation | Method and apparatus for controlling conveyor |
| JP3491201B2 (en) * | 2000-10-30 | 2004-01-26 | 株式会社椿本チエイン | Overload protection device |
| JP2003189461A (en) * | 2001-12-19 | 2003-07-04 | Tsubakimoto Chain Co | Protector against overcurrent |
-
2009
- 2009-11-30 JP JP2009272063A patent/JP5941608B2/en active Active
-
2010
- 2010-11-30 KR KR1020100120123A patent/KR101217539B1/en active Active
- 2010-11-30 CN CN2010105707237A patent/CN102082412B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000278978A (en) * | 1999-03-23 | 2000-10-06 | Sumitomo Heavy Ind Ltd | Motor overload-preventing device |
| JP2002318043A (en) * | 2001-02-13 | 2002-10-31 | Hoshizaki Electric Co Ltd | Control device of auger type ice making machine |
| JP4098182B2 (en) * | 2003-08-07 | 2008-06-11 | 株式会社日立製作所 | Motor drive system and elevator drive system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5941608B2 (en) | 2016-06-29 |
| KR20110060848A (en) | 2011-06-08 |
| JP2011115025A (en) | 2011-06-09 |
| CN102082412B (en) | 2013-10-16 |
| KR101217539B1 (en) | 2013-01-02 |
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