阅读说明：本技术 一种行程限位控制电路及一种减速机 (Stroke limiting control circuit and speed reducer ) 是由 蒋建明 赵庆权 于 2019-12-17 设计创作，主要内容包括：本发明属于行程控制电路应用技术领域,具体涉及一种行程限位控制电路,包括开行程控制电路、闭行程控制电路、行程开关、继电器、共用整流桥和电机。本发明的有益效果在于：1、电机电源不通过行程开关,更加减少电动卷膜器的故障率,并自带过热保护器检测控制电路温度,当控制电路温度达到过热保护器设定断开温度时,过热保护器自动断开,切断控制电路电源,保护控制电路和电机；2、过热保护器具有直接控制高电流、自动复位、重复动作、寿命长等优点；3、行程限位控制电路接线方式简单,方便用户使用；4、采用上述结构设置的减速机具有以下优点,因为设置了过热保护器,有效减少了减速机的故障和安全隐患。(The invention belongs to the technical field of stroke control circuit application, and particularly relates to a stroke limit control circuit which comprises an open stroke control circuit, a closed stroke control circuit, a stroke switch, a relay, a common rectifier bridge and a motor. The invention has the beneficial effects that: 1. the motor power supply does not pass through a travel switch, so that the fault rate of the electric film winder is reduced, the temperature of the control circuit is detected by the overheat protector, and when the temperature of the control circuit reaches the set disconnection temperature of the overheat protector, the overheat protector is automatically disconnected, the power supply of the control circuit is cut off, and the control circuit and the motor are protected; 2. the overheat protector has the advantages of direct control of high current, automatic reset, repeated action, long service life and the like; 3. the stroke limit control circuit has a simple wiring mode and is convenient for users to use; 4. the speed reducer with the structure has the advantages that the overheat protector is arranged, so that faults and potential safety hazards of the speed reducer are effectively reduced.)

1. The utility model provides a stroke limit control circuit, is including opening stroke control circuit and closing stroke control circuit, all be provided with travel switch, relay and sharing rectifier bridge in opening stroke control circuit and the closing stroke control circuit, rectifier bridge connecting motor, the relay is provided with two power input ends, and one end is connected to corresponding travel switch, and the other end is connected with overheat protector, travel switch and overheat protector are connected to power supply circuit respectively.

2. The travel limit control circuit of claim 1, wherein: the relay and the common rectifier bridge are connected to the same overheat protector.

3. The travel limit control circuit of claim 1, wherein: the power adopts single-phase double-circuit power, be provided with switch K3 among the stroke limit control circuit, be provided with binding post N, binding post L1 and binding post L2 in switch K3, connect a looks power respectively.

4. A travel limit control circuit according to claim 3, wherein: the open stroke control circuit is provided with a travel switch K1, a relay RY1 and a shared rectifier bridge; the travel switch K1 is provided with a fixed contact terminal NC, a fixed contact terminal NO and a movable contact terminal COM, the movable contact terminal COM is connected to a first movable contact terminal COM in the RY2, the fixed contact terminal NC is connected to a wiring terminal L1 of the power switch K3, and the fixed contact terminal NO is a disconnection end.

5. The travel limit control circuit of claim 4, wherein; the closed travel control circuit is provided with a travel switch K2, a relay RY2 and a shared rectifier bridge; the travel switch K2 is provided with a fixed contact terminal NC, a fixed contact terminal NO and a movable contact terminal COM, the movable contact terminal COM is connected to a first movable contact terminal COM in the RY1, the fixed contact terminal NC is connected to a wiring terminal L2 of the power switch K3, and the fixed contact terminal NO is a disconnection end.

6. The travel limit control circuit of claim 5, wherein: the relay RY1 is provided with an electromagnet YA1 and four groups of change-over switches, namely a first change-over switch, a second change-over switch, a third change-over switch and a fourth change-over switch, wherein the change-over switches are provided with a static contact terminal NC, a static contact terminal NO and a moving contact terminal COM, and the electromagnet YA1 controls the on-off of the four groups of change-over switches; the relay RY2 is provided with an electromagnet YA2 and four groups of change-over switches, namely a first change-over switch, a second change-over switch, a third change-over switch and a fourth change-over switch, wherein the change-over switches are provided with a static contact terminal NC, a static contact terminal NO and a moving contact terminal COM, and the electromagnet YA2 controls the on-off of the four groups of change-over switches; one end of the electromagnet YA1 is connected to a fixed contact terminal NC of a first change-over switch in the relay RY2, and the other end of the electromagnet YA1 is connected to a wiring terminal N in the power switch K3; one end of the electromagnet YA2 is connected to a fixed contact terminal NC of a first change-over switch in the relay RY1, and the other end of the electromagnet YA2 is connected to a connection terminal N in the power switch K3.

7. The travel limit control circuit of claim 6, wherein: a moving contact terminal COM of a first change-over switch in the relay RY1 is connected to a moving contact terminal COM of K2, and a fixed contact terminal NC is connected to an electromagnet in the relay RY 2; a moving contact terminal COM of the second change-over switch is connected to the K3 wiring terminal L1, and a static contact terminal NC is connected to a 3-pin power supply input end in the rectifier bridge, which is a main power supply circuit of the motor; a moving contact terminal COM of the third change-over switch is connected to the negative electrode of the motor, and a fixed contact terminal NO is connected with a 4-pin V-of the rectifier bridge; a moving contact terminal COM of the fourth change-over switch is connected to the positive pole of the motor, and a fixed contact terminal NO is 2-pin V + in the connecting rectifier bridge.

8. The travel limit control circuit of claim 7, wherein: a moving contact terminal COM of a first change-over switch in the relay RY2 is connected to a moving contact terminal COM of K1, and a fixed contact terminal NC is connected to an electromagnet in the relay RY 1; a moving contact terminal COM of the second change-over switch is connected to the K3 wiring terminal L2, and a static contact terminal NC is connected to a 3-pin power supply input end in the rectifier bridge, which is a main alternating current power supply circuit of the motor; a moving contact terminal COM of the third change-over switch is connected to the positive pole of the motor, and a fixed contact terminal NO is connected with a rectifier bridge V-; a moving contact terminal COM of the fourth change-over switch is connected to the negative pole of the motor, and a fixed contact terminal NO is connected with a rectifier bridge V +.

9. The travel limit control circuit of claim 1, wherein: the common rectifier bridge is connected with a voltage stabilizing diode circuit in parallel.

10. The utility model provides a speed reducer, includes reducing gear box and motor, be provided with travel switch control box on the casing of reducing gear box, its characterized in that: the travel limit control circuit of any one of claims 1 to 9 is arranged in the travel switch control box.

Technical Field

The invention belongs to the technical field of stroke control circuit application, and particularly relates to a stroke limit control circuit and a speed reducer which are matched with a film rolling device and used for lifting films or curtains on greenhouses and livestock and poultry houses.

Background

In the greenhouse and livestock and poultry house, a film or a curtain is usually arranged on the building, and a rolling-up system is required to be arranged for rolling up and releasing. In the existing automatic winding system, a speed reducer is adopted to drive a film winding device to lift a film or a curtain, the speed reducer comprises a motor and a speed reducer, and the motor rotates forwards and backwards and can respectively perform winding and unwinding operations on the film or the curtain.

The existing speed reducer in the market does not have an over-temperature protection product, when the load of the speed reducer is too large or the overload load exceeds the working time of the speed reducer, the current of a control circuit or a motor is too large, the temperature rises, and finally the control circuit or the motor can be burnt out, so that safety accidents are caused.

Based on the above problems, the present invention provides a stroke limit control circuit and a speed reducer.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a stroke limit control circuit and a speed reducer aiming at the defects of the prior art, wherein an overheat protector is connected, and the overcurrent and overtemperature control of the control circuit or a motor can be realized by detecting the current in the control circuit by using the overheat protector; the invention also provides a speed reducer which is provided with the stroke limit control circuit.

The technical scheme is as follows: the invention provides a stroke limit control circuit which comprises an open stroke control circuit and a closed stroke control circuit, wherein stroke switches, relays and a shared rectifier bridge are arranged in the open stroke control circuit and the closed stroke control circuit, the rectifier bridge is connected with a motor, the relays are provided with two power supply input ends, one ends of the two power supply input ends are connected to the corresponding stroke switches, the other ends of the two power supply input ends are connected with overheat protectors, and the stroke switches and the overheat protectors are respectively connected to the power supply circuits. The main power supply of the motor does not pass through the travel switch, so that the travel switch is not easy to damage in frequent use, and the fault frequency of the electric film rolling device is further reduced.

According to the technical scheme, the relay and the common rectifier bridge are connected to the same overheat protector.

This technical scheme, the power adopts single-phase double-circuit power, be provided with switch K3 among the stroke limit control circuit, be provided with binding post N, binding post L1 and binding post L2 in the switch K3, connect a looks power respectively.

According to the technical scheme, a travel switch K1, a relay RY1 and a common rectifier bridge are arranged in the open stroke control circuit; the travel switch K1 is provided with a fixed contact terminal NC, a fixed contact terminal NO and a movable contact terminal COM, the movable contact terminal COM is connected to a first movable contact terminal COM in the RY2, the fixed contact terminal NC is connected to a wiring terminal L1 of the power switch K3, and the fixed contact terminal NO is a disconnection end.

According to the technical scheme, a travel switch K2, a relay RY2 and a common rectifier bridge are arranged in the closed travel control circuit; the travel switch K2 is provided with a fixed contact terminal NC, a fixed contact terminal NO and a movable contact terminal COM, the movable contact terminal COM is connected to a first movable contact terminal COM in the RY1, the fixed contact terminal NC is connected to a wiring terminal L2 of the power switch K3, and the fixed contact terminal NO is a disconnection end.

In the technical scheme, the relay RY1 is provided with an electromagnet YA1 and four groups of change-over switches, namely a first change-over switch, a second change-over switch, a third change-over switch and a fourth change-over switch, wherein the change-over switches are provided with a static contact terminal NC, a static contact terminal NO and a moving contact terminal COM, and the electromagnet YA1 controls the on-off of the four groups of change-over switches; the relay RY2 is provided with an electromagnet YA2 and four groups of change-over switches, namely a first change-over switch, a second change-over switch, a third change-over switch and a fourth change-over switch, wherein the change-over switches are provided with a static contact terminal NC, a static contact terminal NO and a moving contact terminal COM, and the electromagnet YA2 controls the on-off of the four groups of change-over switches; one end of the electromagnet YA1 is connected to a fixed contact terminal NC of a first change-over switch in the relay RY2, and the other end of the electromagnet YA1 is connected to a wiring terminal N in the power switch K3; one end of the electromagnet YA2 is connected to a fixed contact terminal NC of a first change-over switch in the relay RY1, and the other end of the electromagnet YA2 is connected to a connection terminal N in the power switch K3.

According to the technical scheme, a moving contact terminal COM of a first change-over switch in the relay RY1 is connected to a moving contact terminal COM of K2, and a fixed contact terminal NC is connected to an electromagnet in the relay RY 2; a moving contact terminal COM of the second change-over switch is connected to the K3 wiring terminal L1, and a static contact terminal NC is connected to a 3-pin power supply input end in the rectifier bridge, which is a main power supply circuit of the motor; a moving contact terminal COM of the third change-over switch is connected to the negative electrode of the motor, and a fixed contact terminal NO is connected with a 4-pin V-of the rectifier bridge; a moving contact terminal COM of the fourth change-over switch is connected to the positive pole of the motor, and a fixed contact terminal NO is 2-pin V + in the connecting rectifier bridge.

According to the technical scheme, a moving contact terminal COM of a first change-over switch in the relay RY2 is connected to a moving contact terminal COM of K1, and a fixed contact terminal NC is connected to an electromagnet in the relay RY 1; a moving contact terminal COM of the second change-over switch is connected to the K3 wiring terminal L2, and a static contact terminal NC is connected to a 3-pin power supply input end in the rectifier bridge, which is a main alternating current power supply circuit of the motor; a moving contact terminal COM of the third change-over switch is connected to the positive pole of the motor, and a fixed contact terminal NO is connected with a rectifier bridge V-; a moving contact terminal COM of the fourth change-over switch is connected to the negative pole of the motor, and a fixed contact terminal NO is connected with a rectifier bridge V +.

According to the technical scheme, the common rectifier bridge is connected with the voltage stabilizing diode circuit in parallel.

The invention also provides a speed reducer which comprises a reduction gearbox and a motor, wherein a travel switch control box is arranged on a shell of the reduction gearbox, a circuit control box is arranged on a shell of the motor, and the travel limit control circuit is arranged in the circuit control box.

Compared with the prior art, the stroke limit control circuit and the speed reducer have the beneficial effects that: 1. the motor power supply does not pass through a travel switch, so that the fault rate of the electric film winder is reduced, the temperature of the control circuit is detected by the overheat protector, and when the temperature of the control circuit reaches the set disconnection temperature of the overheat protector, the overheat protector is automatically disconnected, the power supply of the control circuit is cut off, and the control circuit and the motor are protected; 2. the overheat protector has the advantages of direct control of high current, automatic reset, repeated action, long service life and the like; 3. the stroke limit control circuit has a simple wiring mode and is convenient for users to use; 4. the speed reducer with the structure has the advantages that the overheat protector is arranged, so that faults and potential safety hazards of the speed reducer are effectively reduced.

Drawings

FIG. 1 is a control circuit diagram of a reducer according to an embodiment of the present invention;

FIG. 2 is an enlarged view of the travel switch of FIG. 1;

FIG. 3 is an enlarged view of the rectifier bridge of FIG. 1;

FIG. 4 is a schematic view of the wiring structure of the motor of the present invention;

wherein, the sequence numbers in the figure are as follows: k1-travel switch; k2-travel switch; K3-Power switch; KBT 1010-rectifier bridge pile; a TVS-voltage regulator diode; RY 1-relay; YA 1-electromagnet; RY 2-relay; YA 2-electromagnet; and M-motor.

Detailed Description

The invention is further elucidated with reference to the drawings and the embodiments.

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The "connection" between the components described below means circuit connection unless otherwise specified.