CN219409051U - Electric hoist control system - Google Patents

Abstract

The utility model discloses an electric hoist control system, which comprises a plurality of forward and reverse rotation control circuits, a wireless receiver and a wireless transmitter, wherein the forward and reverse rotation control circuits are used for starting and stopping control through an alternating current contactor, the forward and reverse rotation control circuits are all connected with a three-phase alternating current power supply, each forward and reverse rotation control circuit is respectively connected with a motor of an electric hoist, the wireless transmitter is in communication connection with the wireless receiver, the wireless receiver is provided with a plurality of control ends, and the alternating current contactor of each forward and reverse rotation control circuit is connected with one control end of the wireless receiver and an independent power supply to form a loop; the utility model has the advantages that: the electric hoists can act simultaneously, personnel are not required to operate equipment in the shaft in a wireless control mode, excessive construction time of the personnel in the shaft is avoided, insufficient safe retreating space is left when the personnel operate the equipment is avoided, the safety goal that the personnel are far away from the shaft is achieved, and the safety production requirement is met.

Description

Electric hoist control system

Technical Field

The utility model relates to the field of electric hoist control, in particular to an electric hoist control system.

Background

For many years, as the production halt and maintenance of each mine are carried out, especially when the main well and the auxiliary well are maintained and suspended, the time left for hoisting is shortened along with the progress of the construction process. However, most of hoisting apparatuses are hand chain blocks or heavy pneumatic blocks, and mechanical hand chain blocks easily cause accidents such as chain blocks and broken chains, so that equipment is damaged and personnel are injured, and the pneumatic blocks save labor time compared with the mechanical hand chain blocks, but a great amount of labor is required for hanging the blocks. Although the electric hoist solves some of the defects, a plurality of hoists cannot act simultaneously, excessive construction time of personnel in a shaft cannot be avoided, and when the electric hoist is constructed in a narrow space, the personnel operation equipment does not have enough safe retreating space, so that the safety target of personnel away from the shaft operation cannot be achieved, and the existing safety production requirement cannot be met.

Disclosure of Invention

The technical problem to be solved by the utility model is that the control of the electric hoist in the prior art cannot achieve simultaneous actions, so that excessive construction time exists in a shaft by personnel, and the personnel does not have enough safe backing space when operating equipment, so that the safety target of the personnel for working away from the shaft is not achieved, and the safety production requirement is not met.

The utility model solves the technical problems by the following technical means: the utility model provides an electric block control system, includes a plurality of positive and negative control circuit, wireless receiver and the wireless transmitter that open and stop the control through alternating current contactor, positive and negative control circuit all is connected with three-phase alternating current power, and every positive and negative control circuit connects the motor of an electric block respectively, wireless transmitter and wireless receiver communication are connected, wireless receiver has a plurality of control ends, and every positive and negative control circuit's alternating current contactor and wireless receiver's a control end and independent power connection become the return circuit.

The beneficial effects are that: the utility model is provided with a plurality of forward and reverse rotation control circuits, so that the simultaneous action of a plurality of electric hoists can be realized, the signal of the wireless transmitter is received through the wireless receiver, and the control end of the wireless receiver acts, thereby controlling the corresponding forward and reverse rotation control circuit, further realizing the forward and reverse rotation of the electric hoists in a loop, avoiding the excessive construction time of personnel in a shaft, avoiding the safety risk caused by insufficient safe backward space when the personnel operate equipment, realizing the safety target that the personnel is far away from the shaft operation, and meeting the safety production requirement.

Further, the forward and reverse rotation control circuit comprises a switch QF, an alternating current contactor KM1, an alternating current contactor KM2 and a current limiting protector FR, wherein the alternating current contactor KM1 comprises a normally open contact KM12, the alternating current contactor KM2 comprises a normally open contact KM22, the three-phase input end of the switch QF is respectively connected with the three phases of a three-phase alternating current power supply, the three-phase output end of the switch QF is respectively connected with the normally open contact KM12 and the normally open contact KM22, and the normally open contact KM12 and the normally open contact KM22 are respectively connected with a motor of an electric hoist through the current limiting protector FR.

Further, the ac contactor KM1 further includes a coil KM11 and a normally closed contact KM13, and the coil KM11, the normally closed contact KM23, a control end of the wireless receiver, and an independent power supply are connected to form a loop.

Further, the ac contactor KM2 further includes a coil KM21 and a normally closed contact KM23, where the coil KM21, the normally closed contact KM13, another control end of the wireless receiver, and another independent power supply are connected to form a loop.

Further, the voltage level of the independent power supply is the same as the voltage level of the ac contactor KM1 and the ac contactor KM 2.

Further, a fuse is further arranged on the line between the switch QF and the alternating current contactor KM1 and between the switch QF and the alternating current contactor KM 2.

Further, the model of the fuse is RT28N-32X.

Further, the ac contactor KM1 and the ac contactor KM2 are of the type CJX2-0910.

Further, the wireless receiver and the wireless transmitter are integrally a wireless remote control device, and the model is F21-18S or F24-14S.

Further, the voltage of the three-phase alternating current power supply is 380V.

The utility model has the advantages that: the utility model is provided with a plurality of forward and reverse rotation control circuits, so that the simultaneous action of a plurality of electric hoists can be realized, the signal of the wireless transmitter is received through the wireless receiver, and the control end of the wireless receiver acts, thereby controlling the corresponding forward and reverse rotation control circuit, further realizing the forward and reverse rotation of the electric hoists in a loop, avoiding the excessive construction time of personnel in a shaft, avoiding the safety risk caused by insufficient safe backward space when the personnel operate equipment, realizing the safety target that the personnel is far away from the shaft operation, and meeting the safety production requirement.

Drawings

FIG. 1 is a schematic block diagram of an electric hoist control system disclosed by the utility model;

fig. 2 is a schematic diagram of wired control of an electric hoist in the electric hoist control system disclosed by the utility model;

FIG. 3 is a diagram of a contact point of a wireless remote control device in an electric hoist control system according to the present utility model;

FIG. 4 is a main circuit diagram of a forward and reverse rotation control circuit in an electric hoist control system according to the present utility model;

FIG. 5 is a schematic diagram of a circuit for controlling the forward and reverse rotation of an electric hoist control system according to the present utility model;

fig. 6 is a schematic diagram of another circuit of the forward/reverse rotation control circuit in the electric hoist control system disclosed by the utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described in the following in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, an electric hoist control system includes a plurality of forward and reverse rotation control circuits for performing start and stop control through ac contactors (KM 1 to KM8 in fig. 1), a wireless receiver 10, and a wireless transmitter 20, wherein the forward and reverse rotation control circuits are all connected with a three-phase ac power supply, each forward and reverse rotation control circuit is respectively connected with a motor M of an electric hoist, the wireless transmitter 20 is in communication connection with the wireless receiver 10, the wireless receiver 10 has a plurality of control ends, and the ac contactor of each forward and reverse rotation control circuit is connected with one control end of the wireless receiver 10 and an independent power supply 30 to form a loop. The voltage of the three-phase alternating current power supply is 380V. The wireless receiver 10 and the wireless transmitter 20 are integrally a wireless remote control device, and the model is F21-18S or F24-14S.

In practical application, the forward and backward rotation control circuit of the circuit hoist is controlled by wires, and referring to fig. 2, the control principle is as follows: forward rotation, namely closing a switch QF, pressing a switch SB1, electrifying a coil KM11 and forward rotating a motor M; reversing, namely pressing a switch SB2, electrifying a coil KM21 and reversing a motor M. The control circuit must require that the coil KM11 and the coil KM21 cannot be energized at the same time, otherwise the main circuit power supply is short-circuited, so that the circuit is required to set the necessary interlocking link, i.e. the normally closed contact of one contactor is connected in series with the coil circuit of the other contactor, after any one contactor is energized, the other contactor cannot be energized even if a start button in the opposite direction is pressed, and the mode of realizing mutual control by using auxiliary normally closed contacts of the two contactors is electric interlocking.

To realize wireless remote control, the switch SB1 and the switch SB2 are required to be connected to the corresponding control points of the wireless remote control device as shown in figure 3, (1) and (2) are power supply contacts of the wireless remote control device; (3) and (4) are emergency stop contacts; (5) (6) (7) (8) (9) (10) (11) are a set of control contacts, wherein (5) is a common terminal, and (6) (7) is a set of ascending/descending contacts, thus completing the control of an electric hoist. The rest is a group of (8) and (9); (10) (11) a set; (12) is a common line 2, (13) and (14) is a set of control terminals; (16) is a common line 3, (17) (18) a set of control terminals; (20) is a common line 5, (21) (22) a set of control terminals; (24) is a set of control terminals for the common line 6, (25) (26). The built-in relay of the wireless remote control device is a passive contact, so that an external power supply which is consistent with the power supply grade of the alternating current contactor is needed to be externally added to all the contacts, and the voltage grade which is consistent with the alternating current contactor is needed to be matched when the wireless remote control device is selected. That is, all coils are controlled by adding a power supply, and the AC contactor of the electric hoist can normally attract. Thus, the whole set of wireless remote control device system is formed. The following describes in detail the circuit and principle of the utility model for controlling the electric hoist in a wireless manner.

As shown in fig. 4 to 6, the forward and reverse rotation control circuit includes a switch QF, an ac contactor KM1, an ac contactor KM2, and a current limiting protector FR, wherein the ac contactor KM1 and the ac contactor KM2 are of the type CJX2-0910. The alternating-current contactor KM1 comprises a coil KM11, a normally open contact KM12 and a normally closed contact KM13, the alternating-current contactor KM2 comprises a coil KM21, a normally open contact KM22 and a normally closed contact KM23, the three-phase input end of the switch QF is respectively connected with the three phases of a three-phase alternating-current power supply, the three-phase output end of the switch QF is respectively connected with the normally open contact KM12 and the normally open contact KM22, and the normally open contact KM12 and the normally open contact KM22 are also respectively connected with a motor M of an electric hoist through a current limiting protector FR. The coil KM11, the normally closed contact KM23, a control end of the wireless receiver 10 and an independent power supply 30 are connected into a loop. The coil KM21, the normally closed contact KM13, the other control terminal of the wireless receiver 10, and the other independent power supply 30 are connected into a loop.

When the other control end of the wireless receiver 10 receives the signal of the wireless transmitter 20, the other control end is electrified, the previous control end is powered off, the coil KM11 is powered off, the normally open contact KM12 is closed, the normally closed contact KM13 is opened, the motor M of the electric hoist rotates positively, the coil KM11 is powered off, the normally open contact KM12 is switched from closed to open, the normally closed contact KM13 is switched from open to closed, the coil KM21 is powered on, the normally closed contact KM22 is closed, the normally closed contact KM23 is opened, the motor M of the electric hoist rotates reversely, and the wireless control of the electric hoist is realized in the control mode.

As a further improvement, the voltage level of the independent power source 30 is the same as the voltage level of the ac contactor KM1 and the ac contactor KM 2. And a fuse RT is further arranged on a circuit between the switch QF and the alternating current contactor KM1 or between the switch QF and the alternating current contactor KM2, so that the safety of a circuit is protected, and the type of the fuse RT is RT28N-32X.

Through the technical scheme, the electric hoist control system is provided with the plurality of forward and reverse rotation control circuits, so that simultaneous actions of a plurality of electric hoists can be realized, the wireless receiver 10 receives signals of the wireless transmitter 20, and the control end of the wireless receiver 10 acts to control the corresponding forward and reverse rotation control circuit, so that forward and reverse rotation of the electric hoists in a loop is further realized, the manner of wireless control does not need personnel on-site operation, excessive construction time of personnel in a shaft is avoided, safety risks caused by insufficient safety backing space when personnel operate equipment are avoided, the safety target that personnel are far away from the shaft operation is realized, and the safety production requirement is met.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. The utility model provides an electric hoist control system, its characterized in that includes a plurality of positive and negative control circuit, wireless receiver and the wireless transmitter that open and stop the control through alternating current contactor, positive and negative control circuit all is connected with three-phase alternating current power, and every positive and negative control circuit connects the motor of an electric hoist respectively, wireless transmitter and wireless receiver communication connection, wireless receiver has a plurality of control ends, and every positive and negative control circuit's alternating current contactor and wireless receiver's a control end and independent power connection become the return circuit.

2. The electric hoist control system according to claim 1, wherein the forward and reverse rotation control circuit comprises a switch QF, an ac contactor KM1, an ac contactor KM2 and a current limiting protector FR, the ac contactor KM1 comprises a normally open contact KM12, the ac contactor KM2 comprises a normally open contact KM22, three-phase input ends of the switch QF are respectively connected with three phases of a three-phase ac power supply, three-phase output ends of the switch QF are respectively connected with the normally open contact KM12 and the normally open contact KM22, and the normally open contact KM12 and the normally open contact KM22 are also respectively connected with a motor of the electric hoist through the current limiting protector FR.

3. The electric hoist control system of claim 2, wherein the ac contactor KM1 further comprises a coil KM11 and a normally closed contact KM13, and the coil KM11, the normally closed contact KM23, a control terminal of the wireless receiver, and an independent power supply are connected into a loop.

4. The electric hoist control system of claim 3, wherein the ac contactor KM2 further comprises a coil KM21 and a normally closed contact KM23, and the coil KM21, the normally closed contact KM13, the other control end of the wireless receiver, and the other independent power supply are connected into a loop.

5. The electric hoist control system of claim 2, characterized in that the voltage level of the independent power supply is the same as the voltage level of the ac contactor KM1 and the ac contactor KM 2.

6. The electric hoist control system of claim 2, characterized in that a fuse is further provided on the line between the switch QF and the ac contactor KM1, KM 2.

7. The electric block control system of claim 6, wherein the fuse is model number RT28N-32X.

8. The electric hoist control system of claim 2, characterized in that the ac contactor KM1 and the ac contactor KM2 are of the type CJX2-0910.

9. The electric hoist control system of claim 1, wherein the wireless receiver and the wireless transmitter are integrally a wireless remote control device, and the model number is F21-18S or F24-14S.

10. The electric block control system of claim 1, wherein the three-phase ac power source has a voltage of 380V.