Rectifier module circuit board of electromagnetic brake

Abstract

The utility model discloses a rectification module circuit board of an electromagnetic brake, and belongs to the technical field of electromagnetic brakes. A rectification module circuit board of an electromagnetic brake comprises a circuit board body, a connector, a rectification module and an electromagnetic brake body, the connector is installed on the circuit board body, and the circuit board body is provided with a power supply, a piezoresistor, a thermistor, the rectification module, a triode, a protection resistor and a capacitor. According to the rectification module circuit board of the electromagnetic brake provided by the utility model, the capacitor can absorb and release electric energy, the second switch closes the second branch, and after the control circuit is electrified, the capacitor absorbs the electric energy, so that the electromagnetic brake body can be opened in a delayed manner for a certain time, and the electromagnetic brake body can be controlled to be opened in a delayed manner; and the second switch closes the second branch circuit, and after the control circuit is electrified, the electromagnetic brake body is immediately opened, so that the two functions of delayed braking or immediate braking of the electromagnetic brake can be realized.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic brake technology, specifically relating to an electromagnetic brake rectifier module circuit board. Background Technology

[0002] The rectifier module in an electromagnetic brake primarily converts alternating current (AC) into direct current (DC) to meet the DC power requirement of the brake's electromagnetic coil. Electromagnetic brakes typically require DC power (e.g., 24VDC) to drive the electromagnet and generate an attractive force, but industrial power supplies are mostly AC (e.g., 220VAC). The rectifier module uses internal diodes or a thyristor bridge circuit to convert the input AC power into pulsating DC power, which is then smoothed by a filter circuit (e.g., a capacitor) before outputting a stable DC power for the brake.

[0003] Existing rectifier modules for delayed braking and rapid braking are separate modules. When customers require rapid braking, the corresponding module needs to be replaced. It is difficult to meet the braking requirements of rapid and delayed braking of a brake on a single rectifier module. Therefore, this application proposes a circuit board for an electromagnetic brake rectifier module. Utility Model Content

[0004] The purpose of this utility model is to provide an electromagnetic brake rectifier module circuit board to solve the problem mentioned in the background art that the existing rectifier modules for delayed braking and fast braking are separate modules. When customers need fast braking, they need to replace the corresponding module. It is difficult to meet the braking requirements of fast and delayed braking of the brake on a single rectifier module.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electromagnetic brake rectifier module circuit board, comprising a circuit board body, a connector, a rectifier module, and an electromagnetic brake body. The connector is mounted on the circuit board body. The circuit board body is provided with a power supply, a varistor, a thermistor, a rectifier module, a transistor, a protection resistor, and a capacitor. The power supply is connected to the connector.

[0006] The power supply, varistor, thermistor, rectifier module, transistor, protection resistor, and capacitor constitute a control circuit for controlling the opening and closing of the electromagnetic brake body. The control circuit includes a main circuit, a first branch circuit, and a second branch circuit.

[0007] The main circuit of the control circuit includes a thermistor, a rectifier module, an electromagnetic brake body, and a resistance wire, while a varistor is installed on the first branch.

[0008] The second branch is equipped with a capacitor and a transistor, and the transistor is connected to the main circuit.

[0009] Preferably, the corners of the circuit board are provided with a chamfered structure.

[0010] Preferably, mounting holes for installation can be provided at the four corners of the circuit board.

[0011] Preferably, a base plate for mounting is provided on the lower side of the two parallel sides of the circuit board body, and the base plate is fixed to the circuit board body by welding.

[0012] Preferably, the base plate is provided with a mounting groove for easy installation.

[0013] Preferably, the power supply outputs alternating current.

[0014] Preferably, a first switch is provided on the main circuit, which is used to turn the control circuit on and off.

[0015] Preferably, the thermistor is an NTC type thermistor.

[0016] Preferably, a second switch is provided on the second branch, which is used to close or open the second branch.

[0017] Preferably, the protective resistor is located on the main circuit.

[0018] Beneficial effects:

[0019] I. The present invention provides an electromagnetic brake rectifier module circuit board in which a capacitor can absorb and release electrical energy, a second switch closes the second branch, and after the control circuit is energized, the capacitor absorbs electrical energy, so the electromagnetic brake body will open for a certain period of time. In this way, the electromagnetic brake body can be controlled to open with a delay. When the second switch closes the second branch and the control circuit is energized, the electromagnetic brake body opens immediately, thus realizing the two functions of delayed braking or immediate braking of the electromagnetic brake.

[0020] II. The electromagnetic brake rectifier module circuit board provided by this utility model has a very high surge voltage in the control circuit at the moment the first switch is turned on. The thermistor has a large resistance because it does not carry current when it is not turned on. It will withstand more voltage when the surge voltage is generated, which can protect the subsequent rectifier module and other components, and allow the control circuit to operate smoothly during the opening and closing process.

[0021] III. The electromagnetic brake rectifier module circuit board provided by this utility model, through the cooperation of internal varistor and resistance wire and other components, when a short circuit occurs in the control circuit, the current will flow at the position of the varistor. The flowing current will burn out the resistance wire and then burn out the control circuit, thereby achieving the purpose of disconnecting the control circuit. This can prevent other components from being burned out during the short circuit process and protect the electrical components on the control circuit. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the circuit board of the electromagnetic brake rectifier module in this utility model;

[0023] Figure 2 This is a front view of the circuit board of the electromagnetic brake rectifier module in this utility model;

[0024] Figure 3 This is the circuit diagram of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Circuit board body; 2. Connector; 3. Varistor; 4. Thermistor; 5. Rectifier module; 6. Transistor; 7. Electromagnetic brake body; 8. Protective resistor; 9. Capacitor. Detailed Implementation

[0027] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0028] like Figures 1-3 As shown in the figure, an embodiment of this utility model provides an electromagnetic brake rectifier module circuit board, including a circuit board body 1, a connector 2, a rectifier module 5, and an electromagnetic brake body 7. The connector 2 is mounted on the circuit board body 1. The circuit board body 1 is provided with a power supply, a varistor 3, a thermistor 4, the rectifier module 5, a transistor 6, a protection resistor 8, and a capacitor 9. The corners of the circuit board body 1 are provided with a chamfered structure, which is smoother than a right angle structure and less likely to scratch other components. Mounting holes can be provided at the four corners of the circuit board body 1 for installation. A base plate for installation is provided on the lower side of the two parallel sides of the circuit board body 1. The base plate is fixed to the circuit board body 1 by welding, and the base plate is provided with a mounting groove for convenient installation.

[0029] In a specific embodiment, the power supply is connected to connector 2, and the power supply outputs AC power.

[0030] The rectifier module circuit board is a key component that converts alternating current (AC) into direct current (DC) and is widely used in power systems, industrial control, new energy and other fields.

[0031] A rectifier module typically includes the following components:

[0032] Rectifier devices: diodes (such as 1N4007), rectifier bridges (such as KBPC series) or silicon controlled rectifiers (SCRs).

[0033] Filtering circuit: capacitors (electrolytic capacitors, ceramic capacitors), inductors (LC filters).

[0034] Control circuit (optional): PWM controller (such as UC3842), MOSFET / IGBT driver chip.

[0035] Protection circuit: fuse, varistor (surge protection), TVS diode (transient voltage protection).

[0036] Heat dissipation design: aluminum substrate, heat sink or fan (for high-power modules).

[0037] It should be noted that the power supply, varistor 3, thermistor 4, rectifier module 5, transistor 6, protection resistor 8, and capacitor 9 constitute the control circuit for controlling the opening and closing of the electromagnetic brake body 7. The control circuit includes a main circuit, a first branch circuit, and a second branch circuit.

[0038] For reference Figure 3 The main circuit of the control circuit includes a thermistor 4, a rectifier module 5, an electromagnetic brake body 7, and a resistance wire. A first switch is set on the main circuit. The first switch is used to turn the control circuit on and off. The thermistor 4 can be an NTC type thermistor. At the moment the first switch is turned on, the control circuit will have a very high surge voltage. When the thermistor 4 is not turned on, it has a large resistance because no current flows through it. It will withstand more voltage when the surge voltage occurs, which can protect the subsequent rectifier module 5 and other components, so that the control circuit can operate smoothly during the turning on and off process.

[0039] Specifically, a varistor 3 is installed on the first branch. The varistor 3 can be an R14 series product. The varistor 3 works in conjunction with the resistance wire and other components. When a short circuit occurs in the control circuit, the current will flow at the location of the varistor 3. The current will burn out the resistance wire and then burn out the control circuit, thereby achieving the purpose of disconnecting the control circuit. This can prevent other components from being burned out during the short circuit and protect the electrical components on the control circuit.

[0040] More specifically, a capacitor 9 and a transistor 6 are installed on the second branch. The transistor 6 is connected to the main circuit, and a second switch is installed on the second branch. The second switch is used to close and open the second branch. The capacitor 9 can absorb and release electrical energy. When the second switch closes the second branch and the control circuit is energized, the capacitor 9 needs to absorb electrical energy, so the electromagnetic brake body 7 will open for a certain period of time. In this way, the electromagnetic brake body 7 can be controlled to open with a delay. When the second switch closes the second branch and the control circuit is energized, the electromagnetic brake body 7 opens immediately, which can realize the two functions of delayed braking or immediate braking of the electromagnetic brake.

[0041] It should be noted that a protective resistor 8 is installed on the main line.

[0042] In summary, this utility model embodiment provides an electromagnetic brake rectifier module circuit board. The capacitor 9 can absorb and release electrical energy. After the second switch closes the second branch and the control circuit is energized, the capacitor 9 needs to absorb electrical energy, so the electromagnetic brake body 7 will open for a certain period of time. This can control the electromagnetic brake body 7 to open with a delay. After the second switch closes the second branch and the control circuit is energized, the electromagnetic brake body 7 opens immediately, which can realize the two functions of delayed braking or immediate braking of the electromagnetic brake.

[0043] At the instant the first switch is turned on, the control circuit will experience a very high surge voltage. Thermistor 4, which has a high resistance because it does not carry current when it is not turned on, will withstand a large voltage when the surge voltage occurs, thus protecting the subsequent rectifier module 5 and other components, and allowing the control circuit to operate smoothly during the turning on and off process.

[0044] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. An electromagnetic brake rectifier module circuit board, comprising a circuit board body (1), a connector (2), a rectifier module (5), and an electromagnetic brake body (7), wherein the connector (2) is mounted on the circuit board body (1), characterized in that, The circuit board (1) is provided with a power supply, a varistor (3), a thermistor (4), a rectifier module (5), a transistor (6), a protection resistor (8), and a capacitor (9). The power supply is connected to the connector (2). The power supply, varistor (3), thermistor (4), rectifier module (5), transistor (6), protection resistor (8), and capacitor (9) form a control circuit for controlling the opening and closing of the electromagnetic brake body (7). The control circuit includes a main circuit, a first branch circuit, and a second branch circuit. The main circuit of the control circuit includes a thermistor (4), a rectifier module (5), an electromagnetic brake body (7), and a resistance wire. A varistor (3) is provided on the first branch. A capacitor (9) and a transistor (6) are installed on the second branch, and the transistor (6) is connected to the main circuit.

2. The electromagnetic brake rectifier module circuit board as described in claim 1, characterized in that, The circuit board body (1) has chamfered corners.

3. The electromagnetic brake rectifier module circuit board as described in claim 1, characterized in that, Mounting holes for installation can be provided at the four corners of the circuit board body (1).

4. The electromagnetic brake rectifier module circuit board as described in claim 1, characterized in that, The circuit board body (1) has a base plate for mounting on its two parallel sides. The base plate is fixed to the circuit board body (1) by welding.

5. The electromagnetic brake rectifier module circuit board as described in claim 4, characterized in that, The base plate is provided with an installation groove for easy installation.

6. The electromagnetic brake rectifier module circuit board as described in claim 1, characterized in that, The power supply outputs alternating current.

7. The electromagnetic brake rectifier module circuit board as described in claim 1, characterized in that, A first switch is installed on the main line, which is used to turn the control circuit on and off.

8. The electromagnetic brake rectifier module circuit board as described in claim 1, characterized in that, The thermistor (4) is an NTC type thermistor.

9. The electromagnetic brake rectifier module circuit board as described in claim 1, characterized in that, A second switch is installed on the second branch, which is used to close or open the second branch.

10. The electromagnetic brake rectifier module circuit board as described in claim 1, characterized in that, The protective resistor (8) is located on the main line.

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