CN201785020U - Material taking machine rotation control device - Google Patents
Material taking machine rotation control device Download PDFInfo
- Publication number
- CN201785020U CN201785020U CN2010202639977U CN201020263997U CN201785020U CN 201785020 U CN201785020 U CN 201785020U CN 2010202639977 U CN2010202639977 U CN 2010202639977U CN 201020263997 U CN201020263997 U CN 201020263997U CN 201785020 U CN201785020 U CN 201785020U
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- relay
- frequency converter
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- plc controller
- resistance
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- 239000000463 material Substances 0.000 title abstract description 5
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 2
- 231100000136 action limit Toxicity 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model discloses a material taking machine rotation control device, which comprises a PLC controller, a frequency converter, a rotation direction control relay and a rotation speed adjusting device. The rotation direction control relay includes a first relay and a second relay, the PLC controller is connected with control ends of the first relay and the second relay, two ends of the first relay and two ends of the second relay are all connected to a control circuit inside the frequency converter, loops are respectively formed by the first relay and the second relay with the control circuit inside the frequency converter, the rotation speed adjusting device includes a sliding rheostat, a resistor and a third relay, a voltage output end of a sliding end of the sliding rheostat is connected to the frequency converter, a control end of the third relay is connected with the PLC controller, one end of the sliding rheostat is connected in series with a positive pole of a direct-current power supply by the third relay while the other end is grounded, and the resistor is connected in parallel to two ends of the third relay. The material taking machine rotation control device can solve the problem that an arm frame of a material taking machine bends downward while rotating towards the direction of a ground belt to collide the ground belt due to excessive inertia.
Description
Technical field
The utility model relates to a kind of reclaimer rotation control device.
Background technology
Reclaimer is to be used for continuously the equipment that heap is got bulk material, is widely used in the stock ground of industrial and mining enterprises such as thermal powerplant, harbour, coking, metallurgy, mine and large-scale irrigation site.Reclaimer is usually located at ground belt top, and the material that the ground belt is carried is transported to each position in stock ground by the revolution of the jib of reclaimer, jib both can about revolution, pitching up and down again.Yet, when jib is parallel with the ground belt,, will collides the belt feeder that is positioned at the below, thereby equipment is caused damage if jib carries out the nutation action.Therefore, when turning round when jib carries out the nutation operation, avoid jib to be turned back to the position that may run into the ground belt, 10 degree scopes general and the belt left and right sides, ground are interior to be nutation attendant exclusion turning circle.But, though when jib becomes 10 to spend with the ground belt, the gyratory directions signal can be disconnected,, still have to bump against ground belt or dykes and dams when because the inertia of jib is very big, when jib was subjected to windage, this phenomenon was more obvious.
The utility model content
For the jib limit that solves reclaimer carry out nutation action limit earthward during the revolution of belt direction because the too big problem that bumps against the ground belt of inertia, the utility model provides a kind of reclaimer rotation control device.
A kind of reclaimer rotation control device of the present utility model comprises the PLC controller, frequency converter, gyratory directions control relay and speed of revolutions control apparatus, described gyratory directions control relay comprises first relay and second relay, described PLC controller is connected with the control end of described first relay and described second relay, the two ends of described first relay and described second relay all be connected in the described frequency converter control circuit and respectively with described frequency converter in control circuit form the loop, described speed of revolutions control apparatus comprises slide rheostat, the voltage output end of the sliding end of this slide rheostat is connected to described frequency converter, described speed of revolutions control apparatus also comprises resistance and the 3rd relay, the control end of the 3rd relay is connected with described PLC controller, one end of described slide rheostat is connected in series by the positive pole of described the 3rd relay and direct supply, other end ground connection, described resistance is parallel to the two ends of described the 3rd relay.
A kind of reclaimer rotation control device of the present utility model can be at the jib of reclaimer at nutation and earthward during the revolution of belt direction, controlling the 3rd relay by the PLC controller disconnects, make resistance connect with slide rheostat, thereby the voltage that makes slide rheostat output to frequency converter reduces, to reach the purpose that reduces speed of revolutions by frequency converter, like this, the inertia of jib reduces, prevent that jib from colliding the ground belt, avoids equipment is caused damage.
Description of drawings
Fig. 1 is the scheme drawing of a kind of reclaimer rotation control device of the present utility model; And
Fig. 2 is the scheme drawing of the jib degreeof turn scope of reclaimer.
The specific embodiment
Below in conjunction with accompanying drawing a kind of reclaimer rotation control device of the present utility model is described in detail.
Fig. 1 is the scheme drawing of a kind of reclaimer rotation control device of the present utility model.As shown in Figure 1, a kind of reclaimer rotation control device of the present utility model comprises PLC controller 1, frequency converter 2, gyratory directions control relay and speed of revolutions control apparatus, the gyratory directions control relay comprises first relay K 1 and second relay K 2, PLC controller 1 is connected with the control end of first relay K 1 and second relay K 2, the two ends of first relay K 1 and second relay K 2 all be connected in the described frequency converter 2 control circuit and respectively with described frequency converter 2 in control circuit form the loop, the speed of revolutions control apparatus comprises slide rheostat R1, the voltage output end of the sliding end of this slide rheostat R1 is connected to frequency converter 2, wherein, the speed of revolutions control apparatus also comprises resistance R 2 and the 3rd relay K 3, the control end of the 3rd relay K 3 is connected with PLC controller 1, the end of slide rheostat R1 is connected in series by the positive pole of described the 3rd relay K 3 with direct supply, other end ground connection, resistance R 2 is parallel to the two ends of described the 3rd relay K 3.
Frequency converter is connected with motor, and effect is frequency and the amplitude that changes the alternating current dynamo power supply, thereby changes the cycle of its moving magnetic field, reaches the purpose of level and smooth control motor speed.Have control circuit in the frequency converter, be used for providing various control signals to frequency converter.The frequency converter that adopts in the utility model is that maximum output power is Siemens's frequency converter of 66KW, with frequency converter bonded assembly motor be the asynchronous motor of three-phase 380V, power 15KW, also can adopt other frequency converter as required.The PLC controller is a programmable logic controller (PLC), can realize various Industry Control by changing its in-to-in control program.
The two ends of first relay K 1 and second relay K 2 all be connected in the described frequency converter 2 control circuit and respectively with described frequency converter 2 in control circuit form the loop, as shown in Figure 1, one end of first relay K 1 and second relay K 2 is connected to the common port (com end) of frequency converter 2 jointly, the other end is connected respectively to the control circuit (not shown) in the described frequency converter 2, and the control circuit in the frequency converter 2 also is connected to common port, thereby the control circuit in first relay K 1 and second relay K 2 and the frequency converter 2 forms the loop, so that different gyratory directions signals is sent to frequency converter 2.Particularly, the gyratory directions signal is sent to PLC controller 1 by the travel switch on the operator's compartment rotary handle, first relay K 1 or second relay K, 2 closures that PLC controller 1 receives in this gyratory directions signal and the control chart 1, when control first relay closes the K1 closure, send left side revolution signal to frequency converter 2, when control second relay K 2 closures, send the right-hand rotation signal to frequency converter 2.
The voltage output end of the sliding end of slide rheostat R1 is connected to frequency converter 2, and frequency converter 2 is controlled rotating speed of motor according to the value of the voltage of voltage output end.The positive pole of described direct supply can be the dc power anode mouth of described frequency converter 2, thereby simplifies circuit, the 10V dc power anode mouth of frequency converter 2 as shown in fig. 1.
Fig. 2 is the scheme drawing of the jib degreeof turn scope of reclaimer.As shown in Figure 2, the dotted line among the figure is represented the direction that jib is parallel with the ground belt, promptly turns round 0 degree, revolution about the jib of reclaimer can carry out, and maximum range turns round 160 degree, the i.e. scopes in B district about being.Wherein, the scope in A district be about the scopes of revolution 10 degree, the scope in A district is a nutation attendant exclusion turning circle, i.e. inaccessiable zone when nutation is operated, enter this zone may owing to speed of revolutions too greatly and because of inertial collision to the ground belt.In existing operation, before entering the A district, disconnect the revolution signal usually, but jib still can enter the A district and may collide the ground belt too greatly owing to inertia owing to inertia.Therefore be provided with the C district as the buffer area, the C district turns round the scopes that 10 degree-15 are spent about being.
In the operation of reclaimer rotation control device of the present utility model, the 3rd relay K 3 is a normally off, and this moment, resistance R 2 was inoperative, has only slide rheostat R1 to play the effect of regulating speed of revolutions.Nutation moves and when the A district turned round, in case jib enters the C district, by 3 disconnections of PLC controller 1 control the 3rd relay K, resistance R 2 connected common dividing potential drop with slide rheostat R1, make the voltage at slide rheostat R1 two ends reduce when jib carries out.Usually, the phenomenon of colliding the ground belt too greatly owing to inertia just can appear in reclaimer greater than a half of high speed of revolutions at speed of revolutions, therefore, in the preferred case, slide rheostat R1 is the identical resistance of resistance with resistance R 2, this moment, the output voltage of sliding end of slide rheostat R1 became original half, made jib speed of revolutions before arriving the A district become original half.Like this, when jib during with the revolution of the highest speed of revolutions, it enters back, C district speed of revolutions and becomes original half, thereby can not collide the ground belt because of inertia is too big.But, also can come the value of resistance R 2 is carried out different settings with actual conditions according to the performance perameter of different reclaimers.
A kind of reclaimer rotation control device of the present utility model can be at the jib of reclaimer at nutation and earthward during the revolution of belt direction, controlling the 3rd relay by the PLC controller disconnects, make resistance connect with slide rheostat, thereby the voltage that makes slide rheostat output to frequency converter reduces, to reach the purpose that reduces speed of revolutions by frequency converter, like this, the inertia of jib reduces, prevent that jib from colliding the ground belt, avoids equipment is caused damage.
Claims (3)
1. reclaimer rotation control device, this device comprises the PLC controller, frequency converter, gyratory directions control relay and speed of revolutions control apparatus, described gyratory directions control relay comprises first relay and second relay, described PLC controller is connected with the control end of described first relay and described second relay, the two ends of described first relay and described second relay all be connected in the described frequency converter control circuit and respectively with described frequency converter in control circuit form the loop, described speed of revolutions control apparatus comprises slide rheostat, the voltage output end of the sliding end of this slide rheostat is connected to described frequency converter, it is characterized in that, described speed of revolutions control apparatus also comprises resistance and the 3rd relay, the control end of the 3rd relay is connected with described PLC controller, one end of described slide rheostat is connected in series by the positive pole of described the 3rd relay and direct supply, other end ground connection, described resistance is parallel to the two ends of described the 3rd relay.
2. device according to claim 1 is characterized in that, the dc power anode mouth of the just very described frequency converter of described direct supply.
3. device according to claim 1 is characterized in that, described slide rheostat is the identical resistance of resistance with described resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202639977U CN201785020U (en) | 2010-07-13 | 2010-07-13 | Material taking machine rotation control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202639977U CN201785020U (en) | 2010-07-13 | 2010-07-13 | Material taking machine rotation control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201785020U true CN201785020U (en) | 2011-04-06 |
Family
ID=43816995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202639977U Expired - Lifetime CN201785020U (en) | 2010-07-13 | 2010-07-13 | Material taking machine rotation control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201785020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738700A (en) * | 2013-12-27 | 2014-04-23 | 珠海三一港口机械有限公司 | Bucket wheel machine and anti-overload control method and device |
-
2010
- 2010-07-13 CN CN2010202639977U patent/CN201785020U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738700A (en) * | 2013-12-27 | 2014-04-23 | 珠海三一港口机械有限公司 | Bucket wheel machine and anti-overload control method and device |
| CN103738700B (en) * | 2013-12-27 | 2016-05-25 | 三一海洋重工有限公司 | Bucket wheel machine and antioverloading control method thereof, device |
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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 |
Granted publication date: 20110406 |
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| CX01 | Expiry of patent term |