CN212425178U

CN212425178U - Multi-frequency-conversion driving integrated tower crane control system

Info

Publication number: CN212425178U
Application number: CN202021666050.0U
Authority: CN
Inventors: 程江龙; 马孝志; 叶志云; 范俊红
Original assignee: Yiwu Hengbang Construction Intelligent Technology Co ltd
Current assignee: Zhejiang Humon Electric Technology Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-01-29
Anticipated expiration: 2030-08-12

Abstract

The utility model discloses a multi-variable-frequency driving integrated tower crane control system, which comprises an inversion unit (1), a variable-frequency main control board (2), a current sampling line (3) and a detection module (4), wherein the current sampling line (3) is connected between the inversion unit (1) and the variable-frequency main control board (2); the current sampling line (3) comprises an S1 signal line (5) and an S2 signal line (6), and the S1 signal line (5) and the S2 signal line (6) are both connected with the detection module (4); the output end of the detection module (4) is connected with a lifting main board (7), a rotation main board (8) and an amplitude-variable main board (9) which have the same structure. The utility model discloses not only can promote compatibility, still have with low costs and convenient to use's advantage.

Description

Multi-frequency-conversion driving integrated tower crane control system

Technical Field

The utility model relates to a tower machine control system, especially a many drive integration tower machine control system frequently.

Background

The tower crane generally needs to be provided with 3 control mechanisms: lifting control, rotation control and amplitude variation control. The existing tower crane control system generally adopts 3 independent control main boards, the lifting is controlled by a lifting main board, the rotation is controlled by a rotating main board, and the amplitude variation is controlled by an amplitude variation main board; in the work, the driving plate corresponding to each mainboard is also needed to drive each mainboard to carry out control operation; the three main boards are incompatible and can only play a control function respectively; and the driving boards are required to be arranged for different main boards, and the three driving boards are incompatible; and the drive board and the mainboard are in one-to-one correspondence, which cannot be used universally, not only the compatibility is poor, but also the control system has a complex structure and higher cost. Therefore, the existing tower crane control system has the problems of poor compatibility and high cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a many drive integration tower machine control method and control system frequently. The utility model discloses not only can promote compatibility, still have advantage with low costs.

The technical scheme of the utility model: a multi-variable-frequency driving integrated tower crane control system comprises an inversion unit, a variable-frequency main control board, a current sampling line and a detection module, wherein the current sampling line is connected between the inversion unit and the variable-frequency main control board; the current sampling line comprises an S1 signal line and an S2 signal line, and the S1 signal line and the S2 signal line are both connected with the detection module; the output end of the detection module is connected with a lifting main board, a rotating main board and a variable amplitude main board which have the same structure.

In the multi-frequency-conversion driving integrated tower crane control system, the detection module comprises an MCU, a pull-up resistor R1, a pull-up resistor R2, a pull-down resistor R5, a pull-down resistor R6 and two resistance-capacitance filter circuits, the output end of an S1 signal line is connected between the pull-up resistor R1 and the pull-down resistor R5, and a resistance-capacitance filter circuit is connected between the S1 signal line and the input end of the MCU; an S2 signal line is connected between the pull-up resistor R2 and the pull-down resistor R6, and another resistance-capacitance filter circuit is connected between the S2 signal line and the input end of the MCU.

In the multi-variable-frequency driving integrated tower crane control system, the resistance-capacitance filter circuit comprises a grounded capacitor and a grounded resistor.

In the multi-variable-frequency-drive integrated tower crane control system, the output end of the detection module is further connected with a lifting display drive module, a rotation display drive module and a variable-amplitude display drive module which have the same circuit structure.

Compared with the prior art, the utility model discloses a many drive integration tower machine control system frequently, gather the level signal through add S1 signal line and S2 signal line on the current sampling line of connecting between contravariant unit and frequency conversion main control board, the level signal access detection module who will gather again detects the judgement, judge whether S1 signal and S2 signal are low level (be zero then low level, be high level if non-zero then, namely S1, S2 equals zero), come to distinguish to rise to, gyration and become width of cloth module, realize the automatic identification of functional module, last detection module drives corresponding main board of standing up according to the testing result, gyration mainboard or become width of cloth mainboard and work, realize rising to rise to, the many drive integration control of gyration and become width of cloth, compatibility has been promoted, 3 drive boards (respectively drive to rise to, the gyration, become width of cloth) and 3 mainboards (the mainboard plays to rise to the main board, A rotary main board and a variable amplitude main board) are separately and independently arranged correspondingly, so that a control circuit is simplified, and the cost is reduced; independent research and development of 3 driving plates are omitted, and research and development cost is reduced; when the detection module works, the S1 signal and the S2 signal are accessed into the MCU for judgment through the pull-up resistor and the pull-down resistor, the accessed signals are filtered through the resistance-capacitance filter circuit, the accuracy of signal access is improved, the MCU is used for judging whether the S1 signal and the S2 signal are equal to zero or not, and finally the MCU carries out corresponding driving according to the judgment result. Furthermore, the utility model discloses still set up 3 and show that the drive circuit lights respectively and shows to rise, gyration and become width of cloth operating condition, facilitate the use. Therefore, the utility model discloses not only can promote compatibility, still have with low costs and convenient to use's advantage.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a circuit schematic of a detection module;

fig. 3 is a circuit schematic diagram of a lifting display driver module.

The labels in the figures are: the device comprises a 1-inversion unit, a 2-frequency conversion main control board, a 3-current sampling line, a 4-detection module, a 5-S1 signal line, a 6-S2 signal line, a 7-lifting main board, an 8-rotation main board, a 9-amplitude-variable main board, a 10-lifting display driving module, an 11-rotation display driving module and a 12-amplitude-variable display driving module.

Detailed Description

The present invention will be further described with reference to the following examples, which are not intended as a limitation of the present invention.

Examples are given. A multi-frequency-conversion driving integrated tower crane control system is shown in figures 1 to 3 and comprises an inversion unit 1, a frequency conversion main control board 2, a current sampling line 3 and a detection module 4, wherein the current sampling line 3 is connected between the inversion unit 1 and the frequency conversion main control board 2; the current sampling line 3 comprises an S1 signal line 5 and an S2 signal line 6, and also comprises other sampling lines (such as current signals, temperature signals, power supplies and the like) required by conventional current sampling, and the S1 signal line 5 and the S2 signal line 6 are both connected with the detection module 4; the output end of the detection module 4 is connected with a lifting main board 7, a rotary main board 8 and a variable amplitude main board 9 which have the same structure.

The detection module 4 comprises an MCU, a pull-up resistor R1, a pull-up resistor R2, a pull-down resistor R5, a pull-down resistor R6 and two resistance-capacitance filter circuits, wherein the output end of an S1 signal wire 5 is connected between the pull-up resistor R1 and the pull-down resistor R5, and a resistance-capacitance filter circuit is connected between the S1 signal wire 5 and the input end of the MCU; an S2 signal line 6 is connected between the pull-up resistor R2 and the pull-down resistor R6, and another resistance-capacitance filter circuit is connected between the S2 signal line 6 and the input end of the MCU. The resistance-capacitance filter circuit comprises a capacitor and a resistor (such as R3, C1, R4 and C2 shown in FIG. 2) which are connected with the ground. The output end of the detection module 4 is further connected with a lifting display driving module 10, a rotation display driving module 11 and a variable amplitude display driving module 12 which have the same circuit structure (the circuit schematic diagrams of the lifting display driving module 10, the rotation display driving module 11 and the variable amplitude display driving module 12 are the same, so that fig. 3 only provides the circuit schematic diagram of the lifting display driving module 10).

The working principle is as follows: a frequency conversion main control board 2 of the tower crane is arranged in a frequency conversion cabinet body of the tower crane, an S1 signal line 5 and an S2 signal line 6 are added on a current sampling line 3 connected between an inversion unit 1 and the frequency conversion main control board 2 and used for distinguishing lifting, rotating and amplitude changing modules, and then a detection module 4 drives 3 main boards (a lifting main board 7, a rotating main board 8 and an amplitude changing main board 9) to respectively control a lifting mechanism, a rotating mechanism and an amplitude changing mechanism according to a detection result. In the detection module, an S1 signal and an S2 signal are respectively connected with pull-down resistors R5 and R6 by pulling up resistors R1 and R2 (after level signals are collected by an S1 signal line 5 and an S2 signal line 6, the level signals are respectively connected with the ground by the pull-down resistor R5 and the pull-down resistor R6), and the S1 signal and the S2 signal are respectively sent to the MCU for identification and judgment by two resistance-capacitance filter circuits R3, C1, R4 and C2; after power-on, the power-on circuit is identified through the pull-down resistors R5 and R6, the power-on circuit is connected to be a low level and the level signal is 0, the power-off circuit is disconnected to be a high level and the level signal is 1, and no 11 mode exists; when R5 is 0 Ω and R6 is NC, S1 is 0, S2 is not equal to 0, and the lifting mode is identified, and the lifting main board 7 is driven to work; when R5 is NC and R6 is 0 Ω, S1 ≠ 0 and S2 ═ 0, and it is recognized as a swing mode, and the swing main board 8 is driven to operate; when R5 is 00 Ω and R6 is 0 Ω, S1 is 0 and S2 is 0, and the amplitude mode is identified, and the amplitude main plate 9 is driven to operate. The lifting main plate 7, the rotating main plate 8 and the amplitude-variable main plate 9 can be mutually used.

When the display driving circuit works, the DOS1 is connected to an IO port of the MCU, when a lamp needs to be lightened, the lamp is output to be high-point flat through the MCU, the triode V1 is driven through the R15 current-limiting resistor, and the R16 and the C5 are used as a filter resistor capacitor. When the DOS1 is at high level, the triode V1 enters a saturation region, the 5V power supply lights the indicator LED1 through the R14 current-limiting resistor and the CE end point of the V1, and the indication function of the corresponding mode is carried out.

Claims

1. The utility model provides a many drive integration tower machine control system that frequently which characterized in that: the device comprises an inversion unit (1), a frequency conversion main control board (2), a current sampling line (3) and a detection module (4), wherein the current sampling line (3) is connected between the inversion unit (1) and the frequency conversion main control board (2); the current sampling line (3) comprises an S1 signal line (5) and an S2 signal line (6), and the S1 signal line (5) and the S2 signal line (6) are both connected with the detection module (4); the output end of the detection module (4) is connected with a lifting main board (7), a rotation main board (8) and an amplitude-variable main board (9) which have the same structure.

2. The multi-variable-frequency-drive integrated tower crane control system according to claim 1, characterized in that: the detection module (4) comprises an MCU, a pull-up resistor R1, a pull-up resistor R2, a pull-down resistor R5, a pull-down resistor R6 and two resistance-capacitance filter circuits, wherein the output end of an S1 signal line (5) is connected between the pull-up resistor R1 and the pull-down resistor R5, and one resistance-capacitance filter circuit is connected between the S1 signal line (5) and the input end of the MCU; an S2 signal line (6) is connected between the pull-up resistor R2 and the pull-down resistor R6, and another resistance-capacitance filter circuit is connected between the S2 signal line (6) and the input end of the MCU.

3. The multi-variable-frequency-drive integrated tower crane control system according to claim 2, characterized in that: the resistance-capacitance filter circuit comprises a capacitor and a resistor which are grounded.

4. The multi-variable-frequency-drive integrated tower crane control system according to claim 1, 2 or 3, characterized in that: and the output end of the detection module (4) is also connected with a lifting display driving module (10), a rotation display driving module (11) and a variable amplitude display driving module (12) which have the same circuit structure.