High-frequency vibration resistant wire-wound resistor

Abstract

The utility model provides a wire-wound resistor resistant to high-frequency vibration, which relates to the technical field of subway resistors and comprises a base, an insulating plate is arranged at one end of the base, a resistor disc is arranged on the insulating plate, a ceramic insulator is arranged on one side of the resistor disc, and screws are arranged at two ends of the ceramic insulator. According to the utility model, the resistor is mounted by using the mechanical mounting holes in the base, and the resistor can work only by contacting the positive electrical terminal and the negative electrical terminal with the ground after the resistor is mounted, as the resistor disc and the base are isolated from the protection box by using the ceramic insulators in the protection box, the resistor can be prevented from being damaged, and the service life of the resistor is prolonged. The base and the protection box are not contacted, so that the base and the protection box are prevented from being contacted in the long-time use process, the problems of corrosion, damage of insulating porcelain pieces and other defects are reduced, and the practicability of the base and the protection box in the actual use process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of subway resistors, in particular to a high-frequency vibration-resistant wire-wound resistor. Background Art

[0002] Subway resistors are electrical components used in subway systems. They are mainly used to limit the size of the current to prevent excessive current from causing damage to electrical equipment or fire and other safety issues. Subway resistors are usually installed in the electrical system of subway trains to limit the current and ensure the safe operation of the subway system. Subway resistors usually use special materials and designs to ensure their stability and reliability in harsh environments such as high temperature and high pressure.

[0003] However, in the prior art, the existing grounding resistor device is a necessary device for absorbing the stray current of the vehicle when the vehicle is running and protecting the vehicle safety. It is an integral part of the vehicle power supply system designed by the user. At present, the grounding resistor is generally used to complete it. Due to the harsh environment under the vehicle, the grounding resistor often has defects such as rust and damage to the insulating porcelain parts, which reduces its practicality in actual use. Therefore, we provide a high-frequency vibration resistant wirewound resistor. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings in the prior art and provide a high-frequency vibration resistant wirewound resistor.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-frequency vibration resistant wirewound resistor, comprising: a base, an insulating plate is provided at one end of the base, a resistor is provided on the insulating plate, a ceramic insulator is provided on one side of the resistor, screws are provided at both ends of the ceramic insulator, a fixing bolt is provided at the end of the screw away from the ceramic insulator, a protective box is provided on one side of the insulating plate, a first connecting bolt is provided between the base and the protective box, a second connecting bolt is provided between the insulating plate and the protective box, a positive electrical terminal is provided on the insulating plate, a negative electrical terminal is provided on the same side of the insulating plate and the positive electrical terminal, electrical terminal connection holes are provided on the positive electrical terminal and the negative electrical terminal, and a mechanical mounting hole is provided on the base.

[0006] As a preferred implementation, the structure of the resistor is designed as a Z-shaped structure, and a ceramic insulator is installed between two resistors.

[0007] As a preferred implementation, a plurality of the resistor sheets are connected in series and fixed together with screws, and the fixing bolts fix the resistor body on both sides of the protection box.

[0008] As a preferred implementation, the protection box is connected to the base via a first connecting bolt, and the insulating plate is mounted on the protection box.

[0009] As a preferred implementation, the positive electrical terminal and the negative electrical terminal are both led out through an insulating plate, and the insulating plate is used for electrical insulation of the protective box.

[0010] As a preferred implementation, electrical terminal connection holes are provided on both the positive electrical terminal and the negative electrical terminal.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] The utility model installs the resistor by using the mechanical installation hole on the base. After the installation is completed, it only needs to make the positive electrical terminal and the negative electrical terminal contact with the ground, so that it can work. Since the resistor sheet and the base and the protection box are isolated by using ceramic insulators inside the protection box, there will be no contact between the base and the protection box, thereby preventing it from contacting the base or the protection box during long-term use, thereby reducing the occurrence of defects such as rust and damage to insulating porcelain parts, thereby improving its practicality in actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model provides a schematic diagram of the main structure of a high-frequency vibration resistant wirewound resistor.

[0014] Figure 2 The utility model provides a schematic diagram of the top view of a high-frequency vibration resistant wirewound resistor.

[0015] Figure 3 The utility model provides a left-side structural schematic diagram of a high-frequency vibration resistant wirewound resistor.

[0016] Legend:

[0017] 1. Base; 2. Insulating plate; 3. Resistor; 4. Ceramic insulator; 5. Screw; 6. Fixing bolt; 7. Protective box; 8. First connecting bolt; 9. Second connecting bolt; 10. Positive electrical terminal; 11. Negative electrical terminal; 12. Electrical terminal connection hole; 13. Mechanical installation hole. DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0019] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0020] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are connected to form a whole only through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0022] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0023] Example 1

[0024] like Figure 1-3As shown, the utility model provides a technical solution: a high-frequency vibration resistant wirewound resistor, comprising: a base 1, an insulating plate 2 is arranged at one end of the base 1, a resistor 3 is arranged on the insulating plate 2, a ceramic insulator 4 is arranged on one side of the resistor 3, screws 5 are arranged at both ends of the ceramic insulator 4, a fixing bolt 6 is arranged at the end of the screw 5 away from the ceramic insulator 4, a protection box 7 is arranged on one side of the insulating plate 2, a first connecting bolt 8 is arranged between the base 1 and the protection box 7, a second connecting bolt 9 is arranged between the insulating plate 2 and the protection box 7, an electrical positive terminal 10 is arranged on the insulating plate 2, and an electrical negative terminal 11 is arranged on the same side of the insulating plate 2 and the electrical positive terminal 10 The electrical terminal positive 10 and the electrical terminal negative 11 are both provided with electrical terminal connection holes 12, and the base 1 is provided with mechanical mounting holes 13. The structure of the resistor 3 is designed as a Z-shaped structure. A ceramic insulator 4 is installed between two resistors 3. After multiple resistors 3 are connected in series, they are fixed into one body with screws 5. The fixing bolts 6 fix the resistor body on both sides of the protection box 7. The protection box 7 and the base 1 are connected by the first connecting bolts 8. The insulating plate 2 is installed on the protection box 7. The electrical terminal positive 10 and the electrical terminal negative 11 are both led out by the insulating plate 2. The insulating plate 2 performs electrical insulation for the protection box 7. The electrical terminal positive 10 and the electrical terminal negative 11 are both provided with electrical terminal connection holes 12.

[0025] In this embodiment, when the staff uses the resistor to protect the subway vehicle, they can install the resistor by using the mechanical installation hole 13 on the base 1. After the installation is completed, they only need to make the positive electrical terminal 10 and the negative electrical terminal 11 contact the ground, so that they can work. Since the resistor 3 and the base 1 and the protection box 7 are isolated by using the ceramic insulator 4 inside the protection box 7, there will be no contact between the base 1 and the protection box 7, thereby preventing it from contacting the base 1 or the protection box 7 during long-term use, thereby reducing the occurrence of defects such as rust and damage to insulating porcelain parts, thereby improving its practicality in actual use.

[0026] Working principle:

[0027] like Figure 1-3 As shown, when the staff use the resistor for subway vehicle protection, they can install the resistor through the mechanical mounting hole 13 on the base 1. After the installation is completed, it is only necessary to contact the electrical terminal positive 10 and the electrical terminal negative 11 with the ground to start working. Inside the protection box 7, the resistor sheet 3 and the base 1 are isolated from the protection box 7 by using a ceramic insulator 4 to ensure that they do not directly contact the base 1 and the protection box 7. This design can prevent the contact of the base 1 or the protection box 7 during long-term use, thereby reducing the occurrence of problems such as rust and damage to insulating porcelain parts. Therefore, this design improves the practicality of the resistor in actual use.

[0028] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0029] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A high frequency vibration resistant wirewound resistor, characterized in that: include: A base (1), wherein an insulating plate (2) is disposed at one end of the base (1), a resistor (3) is disposed on the insulating plate (2), a ceramic insulator (4) is disposed on one side of the resistor (3), screws (5) are disposed at both ends of the ceramic insulator (4), a fixing bolt (6) is disposed at the end of the screw (5) away from the ceramic insulator (4), a protective box (7) is disposed on one side of the insulating plate (2), a first connecting bolt (8) is disposed between the base (1) and the protective box (7), a second connecting bolt (9) is disposed between the insulating plate (2) and the protective box (7), a positive electrical terminal (10) is disposed on the insulating plate (2), a negative electrical terminal (11) is disposed on the same side of the insulating plate (2) and the positive electrical terminal (10), the positive electrical terminal (10) and the negative electrical terminal (11) are both provided with electrical terminal connection holes (12), and a mechanical mounting hole (13) is disposed on the base (1).

2. A high frequency vibration resistant wirewound resistor according to claim 1, characterized in that: The structure of the resistor sheets (3) is designed as a Z-shaped structure, and a ceramic insulator (4) is installed between two resistor sheets (3).

3. A high frequency vibration resistant wirewound resistor according to claim 2, characterized in that: After the plurality of resistor sheets (3) are connected in series, they are fixed together by screw rods (5), and the fixing bolts (6) fix the resistor body on both sides of the protection box (7).

4. The high frequency vibration resistant wirewound resistor according to claim 1, characterized in that: The protection box (7) is connected to the base (1) via a first connection bolt (8), and the insulation plate (2) is mounted on the protection box (7).

5. The high frequency vibration resistant wirewound resistor according to claim 1, characterized in that: The positive electrical terminal (10) and the negative electrical terminal (11) are both led out through an insulating plate (2), and the insulating plate (2) provides electrical insulation for the protective box (7).

6. The high frequency vibration resistant wirewound resistor according to claim 1, characterized in that: The positive electrical terminal (10) and the negative electrical terminal (11) are both provided with electrical terminal connection holes (12).

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