CN102358327B - Remote control type automatic switching machine - Google Patents

Abstract

The invention provides a remote-controlled automatic switch, which uses a combination of a worm gear motor, a remote controller and an LED signal lamp to automatically transform the original manual switch. The technical scheme of the invention is ingenious and flexible, has strong operability and is simple to use. Compared with the original manual switch, the step of manual switch is omitted, and the remote switch can be performed directly in the cab of the locomotive before reaching the switch.

Description

A remote-controlled automatic trigger

technical field

The invention relates to a trigger, in particular to a remote-controlled automatic trigger.

Background technique

In the existing manual switch, the handle of the switch is manually rotated to make the push rod move in a straight line to drive the rail tip to realize the reversing of the switch. When the ground rail car passes through the turnout, the passengers need to get off the car to manually switch the track. The labor intensity of the workers is very high, which also seriously affects the speed of logistics operation.

Contents of the invention

The purpose of the present invention is to provide a remote control automatic switch that can automatically realize the switch.

The technical scheme adopted in the present invention is:

The remote-controlled automatic switch machine includes a manual switch machine and a base plate, and is characterized in that it also includes a control mechanism, an electric actuator, a direction signal indicating system and an automatic manual switching device, and the control mechanism is connected with the electric actuator. The control mechanism is connected with the direction signal indicating system, and the automatic manual conversion device connects the electric actuator with the bottom plate in a movable manner.

The control mechanism includes a control combination switch box, a limit switch, a remote controller, and a receiver. The control combination switch box is composed of electrical circuits. The control combination switch box is connected to the electric actuator and controls the start or stop of the electric actuator. The receiver receives instructions from the remote controller; the remote controller adopts a common universal remote controller.

The limit switch is installed on the limit block and limits the working stroke of the electric actuator.

The electric actuator is composed of a motor and a reducer, the motor is connected to the reducer, and the output end of the reducer is connected to the manual switch.

The automatic manual conversion device includes a connecting plate, an inserting rod, a fixed rod, and a sleeve. One end of the connecting plate is connected to the reducer, and the other end is connected to the sleeve; the inserted rod is inserted into the fixed rod through the sleeve, and the inserted rod The upper end is provided with a cover plate, and the fixing rod is fixed on the bottom plate.

The direction signal indicating system is composed of 2 convertible green direction indicator lights and 2 red warning lights.

With the switch of this technical solution, before the rail transport vehicle passes through the turnout, the operator only needs to press the button lightly, and the switch installed next to the turnout will automatically realize the switch, which can greatly shorten the cargo transportation time, reduce the labor intensity of workers, and improve work efficiency.

Description of drawings

Figure 1 is a schematic structural view of the automatic trigger mechanism.

Figure 2 is a schematic diagram of the limit switch and the steps of the reducer.

Figure 3 is a schematic diagram of the cover plate and the insertion rod.

Figure 4 is a schematic diagram of the control of the automatic trigger.

Fig. 5 is the operation process of the remote-controlled automatic trigger.

Detailed ways

As shown in Figure 1 and Figure 2, the control mechanism includes a control combination switch box (5) and a limit switch (11). The receiver is installed in the control combination switch box (5), and the remote control adopts a general universal remote control. Placed externally, it is used to issue trigger commands to the receiver. The electric actuator consists of a worm reduction motor (1), a worm reducer (2), an artificial switch and a bracket (15). Control the electric switch in the combined switch box (5) to control the start or stop of the motor (1). As shown in Figure 3, the limit switch (11) is installed on both sides of the limit block (14), and the signal line of the limit switch (11) is connected to the control combination switch box (5), which is used to limit the work of the electric actuator stroke, and make sure the switch is in place. The direction signal indication system includes 2 convertible green direction indicator lights and 2 red warning lights, which are controlled by the control combination switch box (5).

The process of operating the remote-controlled automatic trigger is shown in Figure 5.

As shown in Figure 4, QF is a circuit breaker, FR is an overload thermal relay, FU is a fuse, and KA is an intermediate relay. When the emergency stop button (SB1) of the remote control (ARC) is pressed, the contactor (KM1) acts to pull in, and the motor starts in forward rotation. After reaching the limit switch (SQ2), the contactor (KM1) is disconnected, and the motor stops. At the same time, the green direction indicator light (G1) and the red warning light (R2) are on. When (SB2) is pressed, the contactor (KM2) acts and pulls in, and the motor starts to rotate forward. After reaching the limit (SQ1), the contactor (KM2) is disconnected, and the motor stops. At the same time, the green direction indicator (G2) and the red The warning light (R1) lights up. When the electric mechanism is in the rotating state or the rail point of the switch is not in place due to a fault, the red warning lights (R1, R2) will be on, indicating that no passage is allowed.

The remote control adopts a 3-position switch button with emergency stop, which is used to send the forward and reverse of the motor and the emergency stop signal. In order to avoid the need to operate multiple different remote controllers when controlling multiple sets of receivers, it is required that the remote controllers and receivers installed on all turnouts in the entire railway network should be the same in terms of receiving frequency. Therefore, only one remote controller is required in each rail car. Just can realize the remote control to all triggers. And in order to avoid misoperation of other triggers at the same time when the remote control signal is sent out, the launch distance must be less than half of the minimum distance between the two switches. For example, when the minimum distance between the two switches is 20 meters, the launch distance is ≤10 meters.

The electric actuator is composed of a motor and a reducer. The motor is a worm geared motor, the reducer is a worm reducer, the motor is connected to the reducer, and the output end of the reducer is connected to the manual switch.

The electric actuator adopts a high-speed ratio worm geared motor, and the output is a low speed, so as to reduce the impact on the mechanical limit and braking device during parking and frequent positive and negative rotations, and prolong the service life of the equipment. The speed ratio used in this program is 80:1, the rated speed of the motor is 1440r/min, and the output speed after deceleration is 18r/min. The measured maximum pull force of the handle to pull the rotating shaft is 52N, and the torque is T=FxL=52Nx0.5m=26 n m, where F is the pull force of the push rod, and L is the length from the force measuring point of the handle to the center line of the shaft. According to the calculation formula of power and torque, the result is:

P＝T x n/9550η = (26x18)÷( 9550x 0.75) = 0.065KW, where P is the motor power, n is the output speed of the reducer, and η is the mechanical efficiency. In terms of comprehensive installation and the shock resistance performance of the braking device when the ground rail car passes the rail tip, this scheme is driven by a 0.35KW three-phase asynchronous motor with a braking device. The shaft and the hub of the reducer are connected by a flat key.

For fixing the geared motor, a round step (10) is turned on the lower end of the trigger shaft (9) to support the downward gravity from the reducer.

In order to ensure the safety when the automatic device part fails, an automatic manual conversion device is set in this scheme. It includes a connection plate (3), an insertion rod (4), a fixed rod (6), and a sleeve (20). One end of the connection plate (3) is connected to the reducer, and the other end is connected to the sleeve (20); the insertion rod (4) Insert the fixing rod (6) through the sleeve (20), the upper end of the insertion rod (4) is provided with a cover plate (13), and the fixing rod is fixed on the bottom plate (7). Two limit switches (11) are contained in the mechanical limit top of original trigger. The control combination switch box (5) is fixed on the connecting plate (3).

As shown in Figure 3, when the automatic device fails to work normally, the plunger (4) can be taken out to restore the manual switch. As shown in Figure 2, the manual handle (12) can be pulled to switch the track manually. When the motor drives the rotating shaft (9) to rotate, or the manual handle (12) is manually pulled, the push rod moves in a straight line to generate a switch action.

The direction signal of the turnout is indicated by the LED arrow indicator light, in which the direction indication is a green luminous arrow, and the prohibition of passage is a red "×" symbol. The shell is sealed waterproof and dustproof with full silicone. In order to allow passers-by at the front and rear of the turnout to see the indicating signal, each turnout is equipped with four LEDs, two at the front and two at the front, two in the same direction to indicate different direction signals, and two at the back to indicate the same direction signal.

The automatic trigger of this scheme is very convenient to use and maintain.

In use, rail car workers only need to click the remote control button in the car, and the trigger can automatically switch the track without getting off the car. Automatic to manual, the operation process is convenient and simple. When the electric motor fails to realize automatic switching due to failure, the worker only needs to pull the insertion rod away from the fixed rod to realize manual switching.

The ingenious circuit design of the technical solution enables the signal lamp to still normally indicate the direction signal when the manual switch needs to be changed due to a failure of the electric mechanism.

The technical scheme also has the advantage of convenient maintenance. Because the connection between the reducer and the rotating shaft is connected by a flat key, the electric mechanism only needs to be lifted out when it needs to be overhauled.

Claims (1)

1. A remote-controlled automatic trigger, including a manual trigger and a base plate, characterized in that: it also includes a control mechanism, an electric actuator, a direction signal indicating system and an automatic manual conversion device, and the control mechanism is connected with the electric actuator , the control mechanism is connected to the direction signal indicating system, and the automatic manual switching device connects the electric actuator to the base plate in a movable manner; The control mechanism includes a control combination switch box (5), a limit switch (11), a remote controller, and a receiver. The control combination switch box (5) is composed of electrical circuits, and the control combination switch box (5) is connected to an electric actuator mechanism and controls the start or stop of the electric actuator, and the receiver receives instructions from the remote controller; the limit switch (11) is installed on the limit block (14) and limits the working stroke of the electric actuator; The electric actuator is composed of a motor (1) and a reducer (2), the motor (1) is connected to the reducer (2), and the output end of the reducer (2) is connected to a manual switch; The automatic manual conversion device includes a connecting plate (3), an insertion rod (4), a fixing rod (6) and a pipe sleeve (20). One end of the connecting plate (3) is connected to the reducer, and the other end is connected to the pipe sleeve (20 ); the insertion rod (4) is inserted into the fixing rod (6) through the sleeve (20), the upper end of the insertion rod (4) is provided with a cover plate (13), and the fixing rod (6) is fixed on the bottom plate ( 7) above; The direction signal indicating system is composed of 2 convertible green direction indicator lights and 2 red warning lights.

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