Anti-reversing device for positive electrode and negative electrode of freewheeling resistor assembly of brake
By adding circuits and electrical structures to the brake freewheeling resistor assembly and using a cement resistor, a first diode and a second diode, the problem of reverse connection of the positive and negative poles is solved, the stability and safety of the equipment are improved, and the maintenance cost is reduced.
Patent Information
- Application Number
- CN202421449448.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-06-24
AI Technical Summary
In the prior art, reverse connection of the positive and negative poles of the brake coil can easily damage the freewheeling resistor assembly, causing equipment loss and elevator operation delays.
By adding lines and electrical structures, using cement resistors, the first diode and the second diode, designing wire color differentiation and connecting them through wire caps, ensuring that the positive and negative poles are connected correctly, and adding a second diode to protect the power controller.
It reduces line damage caused by reverse connection, improves work efficiency, reduces maintenance costs, and enhances equipment stability and safety.
Smart Images
Figure CN223342128U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an anti-reverse device for the positive and negative poles of a brake freewheeling resistor component. Background Art
[0002] In the current elevator industry, elevator traction machine block brakes and disc brakes are commonly used to stop elevators. These brakes rely on a control power supply with a specific input voltage to facilitate timely braking. The freewheeling resistor component plays a key role in this system. When the brake coil is de-energized, it is used to quickly release the energy stored in the coil to avoid failure or damage.
[0003] In the prior art, the positive and negative poles of the DC power supply, the input source of the brake coil, are connected to the "+" and "-" poles of the freewheeling resistor component. This open connection method is susceptible to incorrect wiring by the operator, resulting in the positive and negative poles being connected in reverse. Once incorrect wiring occurs, the diode in the freewheeling resistor component will be burned out, and the freewheeling resistor component must be replaced before the brake can continue to work, which will cause additional equipment losses and delay the elevator operation.
[0004] Therefore, a device is needed to prevent the positive and negative poles of the brake freewheeling resistor component from being reversed to prevent damage caused by reverse connection and ensure the safety and stability of the component. Utility Model Content
[0005] The purpose of this utility model is to solve the above shortcomings of the prior art and provide a structure that prevents the positive and negative poles of the brake freewheeling resistor component from being connected in reverse by adding circuits and electrical structures. The purpose of this utility model is achieved as follows:
[0006] A device for preventing reverse flow of the positive and negative poles of a brake freewheeling resistor assembly comprises a freewheeling resistor assembly, wherein the freewheeling resistor assembly comprises a cement resistor, a first diode, and a second diode. The positive pole of the first diode is connected to the left side of the cement resistor via a wire, the positive pole of the second diode is connected to the right side of the cement resistor via a wire, the negative pole of the first diode is connected to a red wire, the wire between the cement resistor and the second diode is connected to a blue wire via a wire cap, the negative pole of the second diode is connected to a yellow wire, and a brake coil is connected between the red wire and the blue wire.
[0007] Furthermore, the specification of the cement resistor is ≤20W620RJ.
[0008] Furthermore, the specification of the diode is 6A10M1C.
[0009] In order to enhance the conductivity, the red, blue and yellow wires are 0.75 mm thick. 2 / 300V~500V plastic copper wire.
[0010] In order to enhance the wear resistance and fire resistance of the wires, the red, blue and yellow wires are coated with wear-resistant and fire-resistant materials.
[0011] In order to enhance the wear resistance and fire resistance of the conductor, the wear-resistant and fire-resistant material is one of polyvinyl alcohol, silicone rubber and high-temperature epoxy resin.
[0012] In order to enhance the insulation performance, the material of the wire cap is polyvinyl chloride or polyethylene terephthalate.
[0013] Beneficial Effects: The added line color design ensures clearer and more accurate wire connection during the installation of the freewheeling resistor assembly, significantly reducing the probability of line damage caused by incorrect positive and negative pole connection, improving employee work efficiency and facilitating operation.
[0014] The newly added diode structure reduces the chances of rework and repairs due to reverse connection, lowers equipment maintenance costs, and increases equipment life. It also makes the current channel more stable, ensuring stable and reliable operation of the line even in the event of a sudden power outage or system shock, thereby improving the safety and reliability of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural diagram of an anti-reverse device for the positive and negative poles of a brake freewheeling resistor assembly;
[0016] Figure 2 It is a schematic diagram of the electrical principle of the anti-reverse device of the positive and negative poles of the brake freewheeling resistor component;
[0017] In the figure: 1. Freewheeling resistor assembly, 2. Cement resistor, 3. First diode, 4. Second diode, 5. Red wire, 6. Blue wire, 7. Yellow wire, 8. Brake coil, 9. Wire cap. DETAILED DESCRIPTION
[0018] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.
[0019] In this embodiment:
[0020] Please see Figure 1-Figure 2, a brake freewheeling resistor assembly anti-reverse device, including a freewheeling resistor assembly 1, the freewheeling resistor assembly 1 includes a cement resistor 2, a first diode 3 and a second diode 4, the positive pole of the first diode 3 is connected to the left side of the cement resistor 2 through a wire, the positive pole of the second diode 4 is connected to the right side of the cement resistor 2 through a wire, the negative pole of the first diode 3 is connected to the red wire 5, the wire between the cement resistor 2 and the second diode 4 is connected to the blue wire 6 through a wire cap 9, the negative pole of the second diode 4 is connected to the yellow wire 7, and the brake coil 8 is connected between the red wire 5 and the blue wire 6.
[0021] The specification of cement resistor 2 is ≤20W620RJ, the specification of diode is 6A10M1C, the specification of red wire 5, blue wire 6 and yellow wire 7 is 0.75mm 2 / 300V~500V plastic copper wire, the red, blue and yellow wires 7 are coated with wear-resistant and fire-proof materials, the wear-resistant and fire-proof materials are one of polyvinyl alcohol, silicone rubber and high-temperature epoxy resin, the wire cap 9 is made of polyvinyl chloride or polyethylene terephthalate, the length of the red wire 5, blue wire 6 and yellow wire 7 can be selected according to the situation, and the length in this embodiment is 70mm.
[0022] Here's how it works:
[0023] From above Figure 1 and Figure 2 It can be said that a second diode is added to the freewheeling resistor component 1. When the positive and negative poles of the input power supply DC are connected incorrectly with the positive and negative poles of the freewheeling resistor component, because a second diode is installed at the negative pole (DC-) of the freewheeling resistor component 1, the input power current cannot pass, that is, the brake coil 8 is not energized. After the input power lines are swapped, the brake can resume normal operation. In this field, the brake is a power-off brake. When the brake coil 8 inputs voltage DC, the brake works. When the brake coil 8 loses power, the coil will instantly generate energy, which is absorbed by the freewheeling resistor component 1 at this time. If the brake coil 8 is not connected in parallel with the coil, the energy generated instantly will flow back to the power controller, making the power controller easily damaged and even damaged. In order to protect the power controller, when the positive and negative poles of the power supply are connected incorrectly, the brake coil 8 is not energized. The positive and negative poles of the input power lines can be swapped, which improves the work efficiency of employees, facilitates the operation of operating employees, and ensures the continuity and integrity of the product brake.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A device for preventing the positive and negative poles of a brake freewheeling resistor assembly from reversing, characterized in that: It includes a freewheeling resistor assembly, which includes a cement resistor, a first diode and a second diode. The positive pole of the first diode is connected to the left side of the cement resistor through a wire, the positive pole of the second diode is connected to the right side of the cement resistor through a wire, the negative pole of the first diode is connected to the red wire, the wire between the cement resistor and the second diode is connected to the blue wire through a wire cap, the negative pole of the second diode is connected to the yellow wire, and the brake coil is connected between the red wire and the blue wire.
2. The anti-reverse device for the positive and negative poles of a brake freewheeling resistor assembly according to claim 1, characterized in that: The specifications of the red wire, blue wire and yellow wire are 0.75mm 2 / 300V~500V plastic copper wire.
3. The anti-reverse device for the positive and negative poles of a brake freewheeling resistor assembly according to claim 1, characterized in that: The red, blue and yellow wires are coated with wear-resistant and fire-resistant material.
4. The anti-reverse device for the positive and negative poles of a brake freewheeling resistor assembly according to claim 3, characterized in that: The wear-resistant and fire-proof material is one of polyvinyl alcohol, silicone rubber and high-temperature epoxy resin.
5. The anti-reverse device for the positive and negative poles of a brake freewheeling resistor assembly according to claim 1, characterized in that: The material of the wire cap is polyvinyl chloride or polyethylene terephthalate.