CN86208927U - Double-motor rotating speed monitor - Google Patents
Double-motor rotating speed monitor Download PDFInfo
- Publication number
- CN86208927U CN86208927U CN 86208927 CN86208927U CN86208927U CN 86208927 U CN86208927 U CN 86208927U CN 86208927 CN86208927 CN 86208927 CN 86208927 U CN86208927 U CN 86208927U CN 86208927 U CN86208927 U CN 86208927U
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- China
- Prior art keywords
- motor
- monitor
- rotating speed
- double
- motor rotation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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- Control Of Electric Motors In General (AREA)
Abstract
The utility model relates to a double-motor rotating speed monitoring device, which is used on a door-seat crane which is for harbor production, for monitoring the double-motor rotating speed of a lifting mechanism in a door-seat crane. The monitoring device is composed of a photic hole disk which is installed on a motor shaft, a monitor which monitors the rotation of the photic hole disk and a control box whose external lines are respectively connected to a master controller and the monitor. After the monitoring device is installed on the motor of the lifting mechanism of the door-seat crane, no occurrence of the unexpected expansion phenomenon of the accessories can be ensured.
Description
The utility model belongs to the equipment fault monitoring device
The high pedestal jib crane of harbour production usefulness (hereinafter to be referred as the door machine) all drives the accessory that grasps material with bi-motor.At work, because of the rotating speed difference of bi-motor, to accessory can be opened unexpectedly, make material spilling that accessory is grabbed when people also do not want accessory to open sometimes, this has caused great harm to safety in production.
The utility model is exactly the improvement of carrying out at the problem that the door machine occurs aborning, by the monitoring to the bi-motor rotating speed, stops gripping apparatus and shifts to an earlier date accident and open phenomenon.
Open analysis of phenomenon according to opposite house machine gripping apparatus accident, think that it is many-sided causing this phenomenon, mainly be that the electric fault of a machine itself causes, and in opposite house machine job analysis, learn, be in when transferring the stage after accessory grasps material, it is the most dangerous that accessory opens in advance.Therefore, just at this moment we monitor motor speed.
The way that the utility model is taked is like this.At door machine hoisting mechanism two motor shaft ends a unthreaded hole dish has been installed respectively, the photoelectric sensing monitor has been installed in unthreaded hole dish both sides, when motor rotation time porose disc rotates with motor, pulse signal in the monitor just is sent in the control cabinet, signal has carried out computing in control cabinet, if two motor speeds are different, at this moment have two kinds of situations: if door machine hoisting mechanism master motor speed is paid motor speed greater than hoisting mechanism, gripping apparatus has unexpected open danger, and it is opposite, if pay motor greater than main motor speed, accessory does not just have unexpected danger.Therefore, the utility model regulation, when main motor speed F1 greater than paying a motor speed F2; the umber of pulse n1 that promptly main motor side is sent counts n2 greater than paying motor pulses; and when relatively adding up difference and reaching regulation numerical value И, just send instruction by control cabinet, make the bi-motor shutdown.
Control cabinet is made up of power supply computing circuit, siren, display, and control cabinet wiring one terminates on the monitor, and one terminates on the motor master controller.
The unthreaded hole dish is the plate of a garden shape, is carved with the sign that can represent the motor shaft rotation above, and a garden cover is arranged in the middle of this dish, can be fixed on CD on the motor, and rotate with motor.
Monitor is a photoelectric sensor, and it is contained on the support, and maintains static, and this support is placed in the place that makes monitor monitors arrive CD.
This cover supervising device is mounted in above the motor course of work such as figure below:
The umber of pulse that monitoring device was sent when n1 represented the rotation of door machine hoisting mechanism master motor among the figure, monitoring was unloaded and is put the umber of pulse of sending when on behalf of door machine hoisting mechanism, n2 pay the motor rotation, and И represents the specification error number.
The meaning of the digital representative among the figure is:
1. door machine accessory is in the decline stage in the loaded work piece, and at this moment monitor is exported signal.
2. control cabinet is organized into synchronizing signal with signal.
3. two motor two ends monitors are sent pulse signal, if signal equates, promptly during n1-n2=0, signal is not exported, otherwise output signal.
4.n1-n2＞0 o'clock, signal exported counter to.
Register output is sent in n1-n2＜0 o'clock, again with n1 relatively.
5. when n1-n2＞0, the difference of n1-n2=И is delivered to summary counter
6. when И 〉=regulation is digital, send control signal, drive master controller, realize the motor shutdown.
Adopt this cover monitoring system, can guarantee that unexpected the first transaction of a day's business phenomenon does not appear in a machine accessory, thereby guarantee safety, and this monitoring system has simple in structurely, install easily, cost is low, the characteristics that are easy to grasp.
Accompanying drawing 1 is unthreaded hole dish figure, and 6 small garden holes are unthreaded hole among the figure, and the hole is used for being fixed in middle hole on the motor shaft.
Accompanying drawing 2 is bi-motor rotational speed measuring device block diagram.
Among the figure, the master that 1a, 1b are respectively hoisting mechanism pays motor; 2 is the light source of monitoring device; 3 is the unthreaded hole dish; 4 is light sensor; 5 are the shaping pulse register circuit; 6 is pulse synchronization circuit; 7 is subtraction circuit; 8 is the reversible counting circuit; 9 is the accumulated counts display circuit; 10 is drive circuit; 11 is clock oscillation circuit; 12 is power supply.
Claims (5)
1, a kind of bi-motor rotation speed monitor is characterized in that this device is made up of control cabinet, monitor and unthreaded hole dish.
2, according to the described bi-motor rotation speed monitor of claim 1, it is characterized in that control cabinet outside line one terminates on the master controller, one terminates on the monitor; The unthreaded hole dish is mounted on the motor shaft; Monitor is mounted on the support near CD.
3,, it is characterized in that control cabinet is made up of power supply, computing circuit, siren, display according to claim 1 and 2 described bi-motor rotation speed monitors.
4,, it is characterized in that monitor is a photoelectric sensor according to claim 1 and 2 described bi-motor rotation speed monitors.
5,, it is characterized in that being carved with on the unthreaded hole dish sign that can show the motor rotation according to claim 1 and 2 described bi-motor rotation speed monitors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86208927 CN86208927U (en) | 1986-11-01 | 1986-11-01 | Double-motor rotating speed monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86208927 CN86208927U (en) | 1986-11-01 | 1986-11-01 | Double-motor rotating speed monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86208927U true CN86208927U (en) | 1988-04-20 |
Family
ID=4810925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86208927 Ceased CN86208927U (en) | 1986-11-01 | 1986-11-01 | Double-motor rotating speed monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86208927U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079078C (en) * | 1999-06-30 | 2002-02-13 | 西安建筑科技大学 | High-safety protecting system and method for monitoring running state of tower crane |
| CN103075888A (en) * | 2011-10-25 | 2013-05-01 | 苏州新长光热能科技有限公司 | Synchronously-controlled dual-motor-driven furnace door lifting mechanism |
| CN104375527A (en) * | 2013-08-12 | 2015-02-25 | 苏州维艾普新材料股份有限公司 | Rotating speed and turn number monitoring device |
-
1986
- 1986-11-01 CN CN 86208927 patent/CN86208927U/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079078C (en) * | 1999-06-30 | 2002-02-13 | 西安建筑科技大学 | High-safety protecting system and method for monitoring running state of tower crane |
| CN103075888A (en) * | 2011-10-25 | 2013-05-01 | 苏州新长光热能科技有限公司 | Synchronously-controlled dual-motor-driven furnace door lifting mechanism |
| CN104375527A (en) * | 2013-08-12 | 2015-02-25 | 苏州维艾普新材料股份有限公司 | Rotating speed and turn number monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |