Trolley dual-control system with switchable magnetic disk crown block
By adding a resistive speed control module and a resistive speed control switch module to the disk trolley control circuit, the problem of failure of the disk trolley control circuit cannot operate normally, and the car control function in the case of fault is realized, which improves work efficiency and safety.
Patent Information
- Application Number
- CN202421795679.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The existing disk trolley control circuit cannot operate normally when it fails, which affects work efficiency and poses safety hazards.
A dual-control system for small car that can be switched by disk vans is designed. By adding a resistive speed control module, a resistive speed control module and a second contactor, the stator voltage regulation and speed control is switched to resistive speed control to ensure that the forward and backward of the car can still be controlled in the event of a fault.
When the original disk skycar trolley control circuit fails, the trolley can continue to operate, which improves the equipment operation rate and personnel efficiency and reduces safety hazards.
Smart Images
Figure CN222915916U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of disk crane control, and more specifically, it relates to a double control system for the trolley of a disk crane with switchable functions. Background Art
[0002] The original control circuit of the disk crane trolley consists of a circuit breaker, a master controller, a stator voltage regulating speed controller module, an overcurrent relay, a brake contactor, a mechanical brake, a contactor, etc. Under normal working conditions, the input end of the stator voltage regulating speed controller is connected to a three-phase power supply through a circuit breaker, the output end of the stator voltage regulating speed controller module is connected to the input end of the running motor of the crane trolley, and the input end of the braking motor is connected to the three-phase power supply through the normally open contacts of the circuit breaker and the brake contactor. When the linkage console changeover switch is turned to the stator voltage regulating gear of the trolley, the stator voltage regulating speed power supply of the trolley is turned on. The crane driver controls the output current of the stator voltage regulating speed controller module by operating the master controller, thereby completing the forward and backward running processes of the trolley crane from gear 1 to gear 4.
[0003] Generally, the requirements for safe operation can be met under non-fault conditions. However, when a fault occurs during operation, the trolley cannot move, and it must be repaired before it can work again. This not only affects the normal operation of on-site equipment but also poses certain safety hazards. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide a double control system for the trolley of a disk crane with switchable functions in view of the deficiencies of the prior art, so as to solve the technical problems that the work efficiency is affected and there are safety hazards when the control circuit of the disk crane trolley fails.
[0005] A double control system for the trolley of a disk crane with switchable functions according to the utility model includes a resistance speed control module, a resistance speed switching module, and a second contactor. The input end of the resistance speed switching module is connected to a three-phase power supply through the first normally open switch group of the second contactor. The output end of the resistance speed switching module is connected to the output end of the stator voltage regulating speed controller module. The resistance speed control module is connected to the resistance speed switching module.
[0006] For further improvement, the resistance speed switching module includes a third contactor and a fourth contactor. The first normally open switch group of the second contactor includes a first switch, a second switch, and a third switch. The normally open switch group of the third contactor includes a fourth switch, a fifth switch, and a sixth switch. The normally open switch group of the fourth contactor includes a seventh switch, an eighth switch, and a ninth switch.
[0007] One end of the first switch is connected to the first live wire of the three-phase power supply. The other end of the first switch is simultaneously connected to one end of the fourth switch and one end of the seventh switch. The other end of the fourth switch and the other end of the seventh switch are simultaneously connected to the first terminal of the output end of the stator voltage regulator speed control module;
[0008] One end of the second switch is connected to the second live wire of the three-phase power supply. The other end of the second switch is simultaneously connected to one end of the fifth switch and one end of the eighth switch. The other end of the fifth switch and the other end of the eighth switch are simultaneously connected to the second terminal of the output end of the stator voltage regulator speed control module;
[0009] One end of the third switch is connected to the third live wire of the three-phase power supply. The other end of the third switch is simultaneously connected to one end of the sixth switch and one end of the ninth switch. The other end of the sixth switch and the other end of the ninth switch are simultaneously connected to the third terminal of the output end of the stator voltage regulator speed control module.
[0010] Further, the resistance speed control module includes a forward one-gear button, a backward one-gear button, and a sixth contactor. The external power supply is connected to the coil of the third contactor through the normally closed contact of the forward one-gear button and the fourth contactor connected in series. The external power supply is connected to the coil of the fourth contactor through the normally closed contact of the backward one-gear button and the third contactor connected in series. The external power supply is connected to the coil of the sixth contactor through the forward one-gear button and the backward one-gear button connected in parallel.
[0011] Furthermore, the external power supply is connected to the coil of the brake contactor through the normally open contact of the sixth contactor and the normally open contact of the mechanical brake connected in parallel.
[0012] Furthermore, the external power supply is connected with a resistance speed control switching indicator light through the second normally open contact of the second contactor.
[0013] Beneficial effects
[0014] The advantages of the present utility model are as follows:
[0015] By adding a resistance speed control module, a resistance speed control switching module, and a second contactor on the basis of the original control circuit of the disk crane trolley, the stator voltage regulator speed control is switched to resistance speed control through the second contactor. When the original control circuit of the disk crane trolley fails, the resistance speed control module and the resistance speed control switching module can be used to operate the forward and backward movement of the trolley. The crane operator does not need to leave the work post, and the crane can be started immediately to continue the operation, effectively improving the equipment operation rate and the work efficiency of the personnel. Description of the drawings
[0016] Figure 1This is the electrical schematic diagram of the overall structure of the dual control system of the present utility model;
[0017] Figure 2 This is the electrical schematic diagram of the indicator light and gear shifting structure of the dual control system of the present utility model;
[0018] Figure 3 This is the electrical schematic diagram of the controller module of the dual control system of the present utility model;
[0019] Figure 4 This is the electrical schematic diagram of the resistance speed control module of the dual control system of the present utility model.
[0020] Among them: 3KM2 - the second contactor, U1 - the stator voltage regulation speed control module, 3KM3 - the third contactor, 3KM4 - the fourth contactor, 3KM06 - the sixth contactor, 3KM7 - the brake contactor, 3KM007 - the mechanical brake, 3KM2_1 - the first normally open switch group of the second contactor, 3KM2_2 - the second normally open contact of the second contactor, 3KM3_1 - the normally open switch group of the third contactor, 3KM3_2 - the normally closed contact of the third contactor, 3KM4_1 - the normally open switch group of the fourth contactor, 3KM4_2 - the normally closed contact of the fourth contactor, 3HD - the resistance speed regulation switching indicator light, 3K01 - the forward first gear button, 3K02 - the backward first gear button, S1 - the first switch, S2 - the second switch, S3 - the third switch, S4 - the fourth switch, S5 - the fifth switch, S6 - the sixth switch, S7 - the seventh switch, S8 - the eighth switch, S9 - the ninth switch. Specific embodiments
[0021] The following is a description of the present utility model in combination with embodiments, but it does not constitute any limitation to the present utility model. Any person's limited modifications within the scope of the claims of the present utility model are still within the scope of the claims of the present utility model.
[0022] Refer to Figures 1-4 A switchable trolley dual control system for a disk overhead crane of the present utility model includes a resistance speed control module, a resistance speed regulation switching module, and a second contactor 3KM2. The input end of the resistance speed regulation switching module is connected to a three-phase power supply through the first normally open switch group 3KM2_1 of the second contactor. The output end of the resistance speed regulation switching module is connected to the output end of the stator voltage regulation speed control module U1. The resistance speed control module is connected to the resistance speed regulation switching module. The second contactor 3KM2 is used to switch the stator voltage regulation to resistance speed regulation. The resistance speed control module is used to operate the third contactor 3KM3 and the fourth contactor 3KM4 of the resistance speed regulation switching module. The resistance speed regulation switching module is used to replace the faulty stator voltage regulation speed control module U1.
[0023] The resistance speed regulation switching module includes a third contactor 3KM3 and a fourth contactor 3KM4. The first normally open switch group 3KM2_1 of the second contactor includes a first switch S1, a second switch S2, and a third switch S3. The normally open switch group 3KM3_1 of the third contactor includes a fourth switch S4, a fifth switch S5, and a sixth switch S6. The normally open switch group 3KM4_1 of the fourth contactor includes a seventh switch S7, an eighth switch S8, and a ninth switch S9.
[0024] One end of the first switch S1 is connected to the first live wire of the three-phase power supply. The other end of the first switch S1 is simultaneously connected to one end of the fourth switch S4 and one end of the seventh switch S7. The other ends of the fourth switch S4 and the seventh switch S7 are simultaneously connected to the first terminal of the output end of the stator voltage regulation speed control module U1.
[0025] One end of the second switch S2 is connected to the second live wire of the three-phase power supply. The other end of the second switch S2 is simultaneously connected to one end of the fifth switch S5 and one end of the eighth switch S8. The other ends of the fifth switch S5 and the eighth switch S8 are simultaneously connected to the second terminal of the output end of the stator voltage regulation speed control module U1;
[0026] One end of the third switch S3 is connected to the third live wire of the three-phase power supply. The other end of the third switch S3 is simultaneously connected to one end of the sixth switch S6 and one end of the ninth switch S9. The other ends of the sixth switch S6 and the ninth switch S9 are simultaneously connected to the third terminal of the output end of the stator voltage regulation speed control module U1.
[0027] It is realized that the voltage at the input end of the normally open switch group 3KM3_1 of the third contactor and the voltage at the input end of the normally open switch group 3KM4_1 of the fourth contactor are in the same phase, and the voltage at the output end of the normally open contact of the normally open switch group 3KM3_1 of the third contactor and the voltage at the output end of the normally open switch group 3KM4_1 of the fourth contactor are in opposite phases, so as to realize different input currents of the running motor of the trolley of the overhead crane, and finally realize the forward or backward movement of the trolley of the overhead crane.
[0028] The resistance speed regulation control module includes a forward first gear button 3K01, a backward first gear button 3K02, and a sixth contactor 3KM6. The external power supply is connected to the coil of the third contactor 3KM3 through the series-connected forward first gear button 3K01 and the normally closed contact 3KM4_2 of the fourth contactor. The external power supply is connected to the coil of the fourth contactor 3KM4 through the series-connected backward first gear button 3K02 and the normally closed contact 3KM3_2 of the third contactor.
[0029] By pressing the first forward gear button 3K01, the current of the external power supply is input into the coil of the third contactor 3KM3 through the first forward gear button 3K01 and the normally closed contact 3KM4_2 of the fourth contactor. After the coil of the third contactor 3KM3 is energized, the normally closed contact 3KM3_2 of the third contactor disconnects, and the normally open switch group 3KM3_1 of the third contactor closes.
[0030] By pressing the first reverse gear button 3K02, the current of the external power supply is input into the coil of the fourth contactor 3KM4 through the first reverse gear button 3K02 and the normally closed contact 3KM3_2 of the third contactor. After the coil of the fourth contactor 3KM4 is energized, the normally closed contact 3KM4_2 of the fourth contactor disconnects, and the normally open switch group 3KM4_1 of the fourth contactor closes.
[0031] The external power supply is connected to the coil of the sixth contactor 3KM6 through the first forward gear button 3K01 and the first reverse gear button 3K02 connected in parallel. The external power supply is connected to the coil of the brake contactor 3KM7 through the normally open contact of the sixth contactor 3KM06 and the normally open contact of the mechanical brake 3KM007 connected in parallel. By pressing the first forward gear button 3K01 or the first reverse gear button 3K02, the current of the external power supply is input into the coil of the sixth contactor 3KM06 through the first forward gear button 3K01 or the first reverse gear button 3K02. After the coil of the sixth contactor 3KM06 is energized, the normally open contact of the sixth contactor 3KM06 closes, and the current of the external power supply is input into the coil of the brake contactor 3KM7 through the normally open contact of the sixth contactor 3KM06. After the coil of the brake contactor 3KM7 is energized, the normally open contact of the brake contactor 3KM7 closes, the brake motor starts, and the brake opens.
[0032] The external power supply is connected to the resistance speed regulation switching indicator light 3HD through the second normally open contact 3KM2_2 of the second contactor. When the second contactor 3KM2 is energized, the resistance speed regulation switching indicator light 3HD lights up, prompting the staff that the current operation mode has been switched from stator voltage regulation speed regulation to resistance speed regulation.
[0033] Under normal working conditions, such as Figure 2As shown in the figure, turn the interlocking console changeover switch to the trolley stator voltage regulation position. Contactor 3KM1 is energized and closed, and the power supply of the trolley stator voltage regulation and speed regulation module U1 is turned on. When the overhead crane operator operates the master controller to the forward first gear, press the forward first gear button 3K01. The forward first gear button 3K01 closes, and inputs the first gear through the 6# contact inside the stator voltage regulation and speed regulation module. After receiving the input forward first gear signal, the stator voltage regulation and speed regulation module then outputs the first gear operating voltage to the running motor of the overhead crane trolley. At the same time, 220V braking voltage is output, and the coil of the brake contactor 3KM07 is energized and closed, and the brake of the overhead crane trolley is opened. The overhead crane trolley runs forward at a low speed in the first gear. When the operator sequentially operates the master controller to the forward second, third, and fourth gears, after receiving the input signal, the stator voltage regulation and speed regulation module U1 then outputs the second, third, and fourth gear operating voltages to the motor, and the trolley completes the running process from the first to the fourth gear forward. When the overhead crane operator operates the master controller to the reverse first gear, by pressing the reverse first gear button 3K02, and inputs the first gear through the 5# contact of the stator voltage regulation and speed regulation module U1. After receiving the reverse input first gear signal, the stator voltage regulation and speed regulation module U1 then outputs the first gear operating voltage to the motor. At the same time, 220V braking voltage is output, and the coil of the brake contactor 3KM7 is energized and closed, and the brake of the overhead crane trolley is opened. The overhead crane trolley runs backward at a low speed in the first gear. When the operator sequentially operates the master controller to the reverse second, third, and fourth gears, after receiving the input signal, the stator voltage regulation and speed regulation module U1 then outputs the second, third, and fourth gear operating voltages to the motor, and the trolley completes the running process from the first to the fourth gear backward.
[0034] The working principle of the present utility model is as follows:
[0035] When a fault occurs in the stator voltage regulation and speed regulation module U1, causing the overhead crane trolley to be unable to run, and it is necessary to move the overhead crane trolley forward, energize the second contactor 3KM2. The first normally open switch group 3KM2_1 and the second normally open contact 3KM2_2 of the second contactor are closed simultaneously. Press the forward first gear button 3K01, and the current of the external power supply is input into the coil of the sixth contactor 3KM06 through the forward first gear button 3K01. After the coil of the sixth contactor 3KM06 is energized, the current of the external power supply is input into the coil of the brake contactor 3KM7 through the normally open contact of the sixth contactor 3KM06. After the coil of the brake contactor 3KM7 is energized, the normally open contact of the brake contactor 3KM7 closes, and the brake motor starts and the brake is opened; the current of the external power supply is input into the coil of the third contactor 3KM3 through the forward first gear button 3K01 and the normally closed contact 3KM4_2 of the fourth contactor. After the coil of the third contactor 3KM3 is energized, the normally closed contact 3KM3_2 of the third contactor is disconnected, and the first normally open switch group 3KM3_1 of the third contactor is closed. The three-phase power supply supplies power to the running motor of the overhead crane trolley through the first normally open switch group 3KM3_1 of the third contactor, and the overhead crane trolley moves forward.
[0036] When the stator voltage regulator module U1 fails and the trolley of the overhead crane cannot operate, and it is necessary to move the trolley of the overhead crane backward, press the backward first gear button 3K02. The current of the external power supply is input into the coil of the sixth contactor 3KM06 through the backward first gear button 3K02. After the coil of the sixth contactor 3KM06 is energized, the current of the external power supply is input into the coil of the brake contactor 3KM7 through the normally open contact of the sixth contactor 3KM06. After the coil of the brake contactor 3KM7 is energized, the normally open contact of the brake contactor 3KM7 closes, the brake motor starts, and the brake opens; the current of the external power supply is input into the coil of the third contactor 3KM4 through the backward first gear button 3K02 and the normally closed contact 3KM3_2 of the third contactor. After the coil of the fourth contactor 3KM4 is energized, the normally closed contact 3KM4_2 of the fourth contactor disconnects, and the normally open switch group 3KM4_1 of the fourth contactor closes. The three-phase power supply supplies power to the running motor of the trolley of the overhead crane through the normally open switch group 3KM4_1 of the fourth contactor, and the trolley of the overhead crane moves backward.
[0037] The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which will not affect the implementation effect of the present invention and the practicability of the patent.
Claims
1. A switchable trolley dual control system with a magnetic disk overhead crane, characterized in that: It comprises a resistance speed regulation control module, a resistance speed regulation switching module and a second contactor (3KM2); the input end of the resistance speed regulation switching module is connected to a three-phase power supply via a first normally open switch group (3KM2_1) of the second contactor; the output end of the resistance speed regulation switching module is connected to the output end of a stator voltage regulation speed regulator module (U1); and the resistance speed regulation control module is connected to the resistance speed regulation switching module.
2. According to claim 1, a switchable trolley dual control system for a magnetic disk overhead crane is characterized in that: The resistance speed regulation switching module comprises a third contactor (3KM3) and a fourth contactor (3KM4); the first normally open switch group (3KM2_1) of the second contactor comprises a first switch (S1), a second switch (S2) and a third switch (S3); the normally open switch group (3KM3_1) of the third contactor comprises a fourth switch (S4), a fifth switch (S5) and a sixth switch (S6); the normally open switch group (3KM4_1) of the fourth contactor comprises a seventh switch (S7), an eighth switch (S8) and a ninth switch (S9); One end of the first switch (S1) is connected to a first live wire of a three-phase power supply, the other end of the first switch (S1) is simultaneously connected to one end of a fourth switch (S4) and one end of a seventh switch (S7), and the other end of the fourth switch (S4) and the other end of the seventh switch (S7) are simultaneously connected to a first terminal of an output end of a stator voltage and speed regulator module (U1); One end of the second switch (S2) is connected to the second live wire of the three-phase power supply, the other end of the second switch (S2) is simultaneously connected to one end of the fifth switch (S5) and one end of the eighth switch (S8), and the other end of the fifth switch (S5) and the other end of the eighth switch (S8) are simultaneously connected to the second terminal of the output end of the stator voltage and speed regulator module (U1); One end of the third switch (S3) is connected to the third live wire of the three-phase power supply, the other end of the third switch (S3) is simultaneously connected to one end of the sixth switch (S6) and one end of the ninth switch (S9), and the other end of the sixth switch (S6) and the other end of the ninth switch (S9) are simultaneously connected to the third terminal of the output end of the stator voltage and speed regulator module (U1).
3. The switchable trolley dual control system of a magnetic disk crane according to claim 2 is characterized in that: The resistance speed control module comprises a forward gear button (3K01), a backward gear button (3K02) and a sixth contactor (3KM6); an external power supply is connected to the coil of the third contactor (3KM3) through the forward gear button (3K01) and the normally closed contact (3KM4_2) of the fourth contactor connected in series; the external power supply is connected to the coil of the fourth contactor (3KM4) through the backward gear button (3K02) and the normally closed contact (3KM3_2) of the third contactor connected in series; and the external power supply is connected to the coil of the sixth contactor (3KM06) through the forward gear button (3K01) and the backward gear button (3K02) connected in parallel.
4. The switchable trolley dual control system of a magnetic disk crane according to claim 3 is characterized in that: The external power source is connected to the coil of the brake contactor (3KM7) via the normally open contact of the sixth contactor (3KM06) and the normally open contact of the mechanical brake (3KM007) connected in parallel.
5. The switchable trolley dual control system of a magnetic disk crane according to claim 3 is characterized in that: The external power supply is connected to a resistance speed regulation switching indicator light (3HD) via a second normally open contact (3KM2_2) of a second contactor.