CN220976348U - Main lifting control device of crane - Google Patents
Main lifting control device of crane Download PDFInfo
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- CN220976348U CN220976348U CN202322663482.6U CN202322663482U CN220976348U CN 220976348 U CN220976348 U CN 220976348U CN 202322663482 U CN202322663482 U CN 202322663482U CN 220976348 U CN220976348 U CN 220976348U
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- 239000003990 capacitor Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 8
- 230000000007 visual effect Effects 0.000 abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Control And Safety Of Cranes (AREA)
Abstract
The utility model relates to a crane main lifting control device which comprises a first main loop, a second main loop, a third main loop, a control loop and a main command controller, wherein the second main loop is used for driving a band-type brake to act, the third main loop is used for driving a fan of a main lifting motor to operate, and the first main loop comprises a frequency converter which is used for driving the main lifting motor of a crane to operate. The utility model has the advantages that: the main controller is connected with the digital quantity input module through the port, so that the wiring is less, and the maintenance quantity is reduced; maintenance personnel inquire equipment fault information at any time through the touch screen, and the fault inquiry is visual; the speed feedback signal of the output end of the main lifting motor of the crane is fed back to the speed loop control module of the frequency converter through the pulse encoder, so that the precision of lifting action of the crane is improved; the two band-type brake brakes are adopted to act simultaneously, so that the safety of crane braking is improved, and the potential safety hazard of slipping a hook caused by single band-type brake faults is avoided.
Description
Technical Field
The utility model relates to the technical field of cranes, in particular to a main hoisting control device of a crane.
Background
The bridge crane basically adopts a frequency converter to drive the main lifting motor of the crane to lift, has the advantages of large speed regulation range, small mechanical impact, obvious energy conservation and the like, but in actual operation, the following phenomena often occur:
The crane slides down, the heavy load descends, the band-type brake is out of control, the lifting action is not in place, and as the phenomena occur irregularly, the crane can be searched, and the crane can be tested again and has normal conditions;
The lifting operation of the main lifting motor of the existing crane adopts a button mode, so that the buttons are more and the wiring is more;
the problems are difficult to inquire faults, and potential safety hazards exist.
Disclosure of Invention
The utility model aims to provide a main lifting control device of a crane, which improves the lifting action precision of the crane, has visual fault inquiry and eliminates potential safety hazards.
In order to achieve the above purpose, the present utility model is realized by the following technical scheme:
The main control device that plays to rise of crane includes that the crane owner plays to rise motor, band-type brake stopper, main motor fan that plays to rise, still include main return circuit one, main return circuit two, main return circuit three, control circuit, main command controller, main return circuit two is used for driving the action of band-type brake stopper, main return circuit three is used for driving main motor fan that plays to rise and moves, main return circuit one includes the converter, the converter is used for driving the crane owner to play to rise the motor operation, main return circuit one, main return circuit two, main return circuit three's input is connected with alternating current source one, control circuit includes digital quantity input module and digital quantity output module, digital quantity input module and digital quantity output module pass through port connection, the output contact of main command controller is connected with digital quantity input module's port respectively.
The device also comprises an encoder, wherein the encoder is arranged on an output shaft of the main lifting motor of the crane, and the encoder is connected with the frequency converter through a port.
The digital quantity output module is connected with the coil of the relay KA1 to the coil of the relay KA9 through a port, the control loop further comprises a branch a and a branch b which are connected in parallel, the branch a and the branch b are both connected with an alternating current power supply II, the branch a comprises a normally open contact of the relay KA8 and a coil of a contactor K31 which are connected in series, the coil of the contactor K31 is connected with a resistor R1 in parallel, a capacitor C1 is connected with the resistor R1 in series, the branch b comprises a normally open contact of the relay KA9 and a coil of a contactor K71 which are connected in series, the coil of the contactor K71 is connected with a resistor R2 in parallel, and the capacitor C2 is connected with the resistor R2 in series; normally open contacts of the relay KA1 to KA7 are respectively connected with the frequency converter through ports.
The primary loop I further comprises a breaker Q11 and fuses F01-F03, the fuses F01-F03 and the breaker Q11 are sequentially connected to a power input port of the frequency converter, and a power output port of the frequency converter is connected with a crane main lifting motor; the second main loop comprises a normally open main contact of a contactor K71 connected in series with the band-type brake and a breaker Q71; the main loop III comprises a normally open main contact of a contactor K31 and a breaker Q31 which are connected in series with the main lifting motor fan.
The encoder is a pulse encoder.
The control loop also comprises a CPU module, a touch screen and a power module, wherein the digital quantity input module, the digital quantity output module, the CPU module and the power module are connected through ports, the CPU module is connected with the touch screen through a communication port, and the power module is used for providing an alternating current power supply II.
Compared with the prior art, the utility model has the beneficial effects that:
1. The main command controller is connected with the digital quantity input module through the port, so that the wiring is less, the maintenance quantity is reduced, and the production cost is saved;
2. Maintenance personnel inquire equipment fault information at any time through the touch screen, so that fault inquiry is visual, and time and labor are saved;
3. The speed feedback signal of the output end of the main lifting motor of the crane is fed back to the speed loop control module of the frequency converter through the pulse encoder, so that the precision of lifting action of the crane is improved;
4. The two band-type brake brakes are adopted to act simultaneously, so that the safety of crane braking is improved, and when one band-type brake fails or has hidden danger, the other band-type brake can still play a role in braking, and the potential safety hazard of slipping a hook caused by the failure of the single band-type brake is avoided.
Drawings
Fig. 1 is a schematic diagram of the principle of a main loop of a main lifting control device of a crane.
Fig. 2 is a schematic diagram of a control loop principle.
Fig. 3 is a schematic diagram of a control loop principle two.
Fig. 4 is a schematic diagram of a control loop principle three.
Fig. 5 is a schematic structural view of a main hoisting control device of the crane.
FIG. 6 is a flow chart of a main hoisting control device of the crane in the embodiment.
Fig. 7 is a schematic diagram of band-type brake control in an embodiment.
In the figure: 1-winding drum 2-crane main lifting motor 3-brake wheel 4-speed reducer 5-wire rope 6-band-type brake 7-lifting hook group.
Detailed Description
The present utility model will be described in detail below with reference to the drawings of the specification, but it should be noted that the practice of the present utility model is not limited to the following embodiments.
The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present utility model, but the scope of the present utility model is not limited to the following examples. The methods used in the examples described below are conventional methods unless otherwise specified.
[ Example 1]
See fig. 5, a crane main lifting control device, the crane is bridge crane, including crane main lifting motor 2, band-type brake stopper 6, main lifting motor fan, reel 1, brake pulley 3, speed reducer 4, wire rope 5, lifting hook group 7, be provided with crane main lifting motor 2 on the crane roof beam, band-type brake stopper 6, reel 1, brake pulley 3, speed reducer 4, main lifting motor fan, band-type brake stopper 6 quantity is two, two band-type brake stoppers 6 action simultaneously, the security of crane braking has been improved, when one band-type brake stopper 6 breaks down or hidden danger, another band-type brake stopper 6 still can play the braking effect, avoid single band-type brake stopper 6 trouble to cause the potential safety hazard of swift current hook, main lifting motor fan is used for giving crane main lifting motor 2 heat dissipation, crane main lifting motor 2 and speed reducer 4 are connected, crane main lifting motor 2 drives reel 1 rotation, wire rope 5 on reel 1 drives lifting hook group 7 lift action, brake pulley 3 installs on speed reducer 4 input shaft, realize lift brake pulley 6 with speed reducer 4 jointly, when having realized that band-type brake stopper 6 breaks down, the brake pulley 3 is held down with static brake pulley 3, the action of brake pulley 3 is held down and the brake pulley 6 is held down in the brake 6 when the brake 6 is held down, the brake is held down and is held down by the brake 3 to the brake is held down, and is closed by the brake 3 when the brake is held down, and is held down and the brake is not in the brake 6 is held by the brake and the brake is held.
Referring to fig. 1 to 4, a crane main lifting control device comprises a control loop, a main command controller S40, a pulse encoder C01, a main loop one, a main loop two and a main loop three, wherein the pulse encoder C01 is arranged on an output shaft of a crane main lifting motor 2, the pulse encoder C01 is connected with a frequency converter through ports X1 and X2, signals collected by the pulse encoder C01 are transmitted to the frequency converter through an interface module RTAC, and speed feedback signals at the output end of the crane main lifting motor 2 are fed back to a speed loop control module of the frequency converter through the pulse encoder C01, so that the precision of crane lifting actions is improved.
The control loop comprises a digital quantity input module, a digital quantity output module, a CPU module, a touch screen, a power module, a reset button S29, a branch a and a branch b which are connected in parallel, wherein the digital quantity input module, the digital quantity output module, the CPU module and the power module are connected through ports, the touch screen is connected with the CPU module through a communication port, the power module is used for providing AC power AC220V, the output contact I, the output contact II, the output contact III and the output contact IV of the master controller S40 are respectively connected with the ports 2, the ports 3, the ports 4 and the ports 5 of the digital quantity input module and the digital quantity output module, the port connection quantity of the digital quantity input module and the digital quantity output module is reduced, and the maintenance quantity is reduced; the reset button S29 is connected with the port 12 of the digital quantity input module, and the master controller S40 and the reset button S29 are arranged on the console of the cab; the digital quantity output module is respectively connected with coils of a relay KA1 and a coil of a relay KA9 through a port 2-a port 10, a branch a and a branch b are both connected with an alternating current power supply AC220V, the branch a comprises a normally open contact of a relay KA8 and a coil of a contactor K31 which are connected in series, the coil of the contactor K31 is connected with a resistor R1 in parallel, a capacitor C1 is connected with the resistor R1 in series, the capacitor C1 and the resistor R1 are used for resistance-capacitance absorption, the branch b comprises a normally open contact of the relay KA9 and a coil of a contactor K71 which are connected in series, the coil of the contactor K71 is connected with a resistor R2 in parallel, the capacitor C2 is connected with the resistor R2 in series, and the capacitor C2 and the resistor R2 are used for resistance-capacitance absorption; normally open contacts of the relay KA1 to KA7 are connected to the ports 1, 2, 3, 4, 5, 6 and 11 of the frequency converter through the X22.
The primary loop I comprises a frequency converter, a breaker Q11 and fuses F01-F03, wherein the power input port of the frequency converter is sequentially connected with the fuses F01-F03 and the breaker Q11, the power output port of the frequency converter is connected with a crane main lifting motor, and the frequency converter is used for driving the crane main lifting motor to operate; the second main loop comprises a normally open main contact of a contactor K71 and a breaker Q71 which are connected in series with the band-type brake, and the second main loop is used for driving the band-type brake to act; the main loop III comprises a normally open main contact of a contactor K31 and a breaker Q31 which are connected in series with the main lifting motor fan, and is used for driving the main lifting motor fan to operate; the input ends of the first main loop, the second main loop and the third main loop are connected with an alternating current power supply AC 380V.
The working process of the master controller is as follows:
the output contact I, the output contact II, the output contact III and the output contact IV of the master controller S40 are respectively connected with the port 2, the port 3, the port 4 and the port 5 of the digital quantity input module, the output contact I of the master controller S40 is closed, and the coil of the relay KA3 is electrified and used for realizing the forward first gear action of the crane; the first output contact and the third output contact are closed, and the coil of the relay KA3 and the coil of the relay KA2 are powered on and used for realizing the forward second gear action of the crane; the first output contact and the fourth output contact are closed, and the coil of the relay KA3 and the coil of the relay KA5 are powered on and used for realizing the forward three-gear action of the crane; the first output contact, the third output contact and the fourth output contact are closed, and the coil of the relay KA3 and the coil of the relay KA6 are powered to realize the forward fourth gear action of the crane; the second output contact of the main controller S40 is closed, and the coil of the relay KA4 is electrified and is used for realizing the reverse first gear action of the crane; the second output contact and the third output contact are closed, and the coil of the relay KA4 and the coil of the relay KA2 are powered on, so that the reverse second gear action of the crane is realized; the second output contact and the fourth output contact are closed, and the coil of the relay KA4 and the coil of the relay KA5 are powered on and used for realizing reverse three-gear actions of the crane; the second output contact, the third output contact and the fourth output contact are closed, and the coil of the relay KA4 and the coil of the relay KA6 are powered, so that reverse four-gear action of the crane is realized; the main controller is adopted to realize the switching of the forward or reverse speed first gear, the speed second gear, the speed third gear and the speed fourth gear of the crane, so that the port connection quantity of the digital quantity input module and the digital quantity output module is reduced, and the maintenance quantity is reduced.
The action process of the band-type brake is as follows:
A starting button is arranged on an operating platform of the cab, when an operator short-circuit terminal by mistake or an artificial external force forcibly makes the main lifting band-type brake contactor K71 to be attracted, the CPU module can program a system alarm in the control module to cause the power failure of the whole vehicle, so that a band-type brake (band-type brake) cannot be opened.
See fig. 6, see fig. 7:
I0.0- - -an activation button;
I1.0-normally open auxiliary contact of main lifting band-type brake contactor K71;
I3.0- - -reset;
q44.1- -Crane Total Power contactor;
q48.3- -Main lifting brake contactor (control K71);
m200.0— an intermediate variable;
t200- -delay-on relay;
The first step: when an operator executes a start button instruction, namely I0.0 is connected with Q44.1 to act, and the whole vehicle normally transmits power;
And a second step of: when an operator performs misoperation or short-circuits the coil of the main lifting band-type brake contactor K71 by mistake, namely I1.0 is connected with M200.0, at the moment, the system alarms, Q44.1 is disconnected, and the whole vehicle is powered off;
And a third step of: and after the I3.0 action is reset, restarting the I0.0, and then normally transmitting power to the whole vehicle.
The utility model adopts the main command controller to be connected with the digital quantity input module through the port, so that the wiring is less, the maintenance quantity is reduced, and the production cost is saved; maintenance personnel inquire equipment fault information at any time through the touch screen, so that fault inquiry is visual, and time and labor are saved; the speed feedback signal of the output end of the main lifting motor of the crane is fed back to the speed loop control module of the frequency converter through the pulse encoder, so that the precision of lifting action of the crane is improved; the two band-type brake brakes are adopted to act simultaneously, so that the safety of crane braking is improved, and when one band-type brake fails or has hidden danger, the other band-type brake can still play a role in braking, and the potential safety hazard of slipping a hook caused by the failure of the single band-type brake is avoided.
Claims (6)
1. The main control device that plays to rise of crane includes that the crane owner plays to rise motor, band-type brake stopper, main motor fan that plays to rise, its characterized in that still includes main circuit one, main circuit two, main circuit three, control circuit, main command controller, main circuit two is used for driving band-type brake stopper action, main circuit three is used for driving main motor fan that plays to rise and operates, main circuit one includes the converter, the converter is used for driving the crane owner to play to rise the motor operation, main circuit one, main circuit two, main circuit three's input is connected with alternating current source one, the control circuit includes digital quantity input module and digital quantity output module, digital quantity input module and digital quantity output module pass through port connection, the output contact of main command controller is connected with digital quantity input module's port respectively.
2. The crane main hoisting control device according to claim 1, further comprising an encoder, wherein the encoder is arranged on an output shaft of the crane main hoisting motor, and the encoder is connected with the frequency converter through a port.
3. The crane main lifting control device according to claim 1, wherein the digital output module is connected with a coil of a relay KA1 to a coil of a relay KA9 through a port, the control loop further comprises a branch a and a branch b which are connected in parallel, the branch a and the branch b are both connected with an alternating current power supply II, the branch a comprises a normally open contact of a relay KA8 and a coil of a contactor K31 which are connected in series, the coil of the contactor K31 is connected in parallel with a resistor R1, a capacitor C1 is connected in series with the resistor R1, the branch b comprises a normally open contact of the relay KA9 and a coil of a contactor K71 which are connected in series, the coil of the contactor K71 is connected in parallel with a resistor R2, and the capacitor C2 is connected in series with the resistor R2; normally open contacts of the relay KA1 to KA7 are respectively connected with the frequency converter through ports.
4. The crane main lifting control device according to claim 1, wherein the main loop I further comprises a breaker Q11 and fuses F01-F03, the power input port of the frequency converter is sequentially connected with the fuses F01-F03 and the breaker Q11, and the power output port of the frequency converter is connected with a crane main lifting motor; the second main loop comprises a normally open main contact of a contactor K71 and a breaker Q71 which are connected in series with the band-type brake; the main loop III comprises a normally open main contact of a contactor K31 and a breaker Q31 which are connected with the main lifting motor fan in series.
5. The crane main hoisting control device according to claim 2, wherein the encoder is a pulse encoder.
6. The crane main hoisting control device according to claim 1, wherein the control loop further comprises a CPU module, a touch screen and a power module, the digital quantity input module, the digital quantity output module, the CPU module and the power module are connected through ports, the CPU module and the touch screen are connected through communication ports, and the power module is used for providing an alternating current power supply II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322663482.6U CN220976348U (en) | 2023-09-28 | 2023-09-28 | Main lifting control device of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322663482.6U CN220976348U (en) | 2023-09-28 | 2023-09-28 | Main lifting control device of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220976348U true CN220976348U (en) | 2024-05-17 |
Family
ID=91065392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322663482.6U Active CN220976348U (en) | 2023-09-28 | 2023-09-28 | Main lifting control device of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220976348U (en) |
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2023
- 2023-09-28 CN CN202322663482.6U patent/CN220976348U/en active Active
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