Novel frequency converter convenient for rectifier maintenance

By installing the slide rod and control panel on the inside of the frequency converter cabinet and using the motor to drive the screw rod and control panel to rotate, the rectifier plate is adjusted to the same horizontal position as the switch module wiring post, the problem of difficult to ensure the wiring connection density caused by the uncontrollable position of the rectifier and switch module in the frequency converter is solved, and the circuit stability is improved and the risk of inverter damage is reduced.

CN222827128UActive Publication Date: 2025-05-02SHENZHEN FEIZHAO TECH CO LTD
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Patent Information

Application Number
CN202421294673.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-07
Publication Date
2025-05-02
Estimated Expiration
2034-06-07

AI Technical Summary

Technical Problem

In existing inverters, the rectifier is directly installed inside the inverter cabinet, resulting in uncontrollable position of the rectifier and the switch module, with many wiring heads and the wiring cannot be guaranteed to be at the same level, making it difficult to ensure the tightness of the wiring connection, which can easily lead to poor connection of the working contacts, affecting the stability of the circuit and possibly damage the inverter.

Method used

By installing a slide rod on the inside of the frequency converter cabinet and threading the controllable plate to the outside of the screw, the motor drives the screw and controllable plate to rotate, so that the rectifier plate can be adjusted to the same horizontal position as the switch module terminal, thereby ensuring the connection density of each wiring head.

Benefits of technology

By adjusting the position of the rectifier plate, ensure the tight connection of the wiring head, avoid poor connection of the working contacts, improve the stability of the circuit, and reduce the risk of inverter damage.

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    Figure CN222827128U_ABST
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Abstract

The utility model discloses a novel frequency converter convenient to maintain a rectifier, which relates to the technical field of frequency converters, and comprises a frequency conversion cabinet, the bottom of the frequency conversion cabinet is fixedly connected with a bottom platform, the top of the inner side of the frequency conversion cabinet is fixedly connected with a switch module, and the bottom of the switch module is provided with a binding post. The inner side of the top of the frequency conversion cabinet is fixedly connected with a sliding rod, the outer side of the sliding rod is connected with a controllable plate in a sliding mode, and the side face of the bottom of the controllable plate is fixedly connected with a rectifying plate through a screw, the controllable plate is installed on the inner side of the frequency conversion cabinet through the sliding rod, and the other side of the controllable plate is in threaded connection with the outer side of a lead screw; the driven wheel installed at the top end of the lead screw is in meshed connection with the driving wheel on the output shaft of the motor, the motor drives the driving wheel to rotate, the lead screw on the inner side of the driven wheel can drive the controllable plate to rotate, and therefore the rectifying plate on the front face of the controllable plate can be adjusted to the same horizontal position as a switch module binding post, and the connection tightness of connector lugs can be guaranteed.
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Description

Technical Field

[0001] The utility model relates to the technical field of frequency converters, in particular to a novel frequency converter which is convenient for maintaining a rectifier. Background Art

[0002] The inverter is mainly composed of rectification (AC to DC), filtering, inversion (DC to AC), braking unit, drive unit, detection unit, microprocessor unit, etc. The inverter adjusts the voltage and frequency of the output power supply by the internal IGBT switching, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the inverter has many protection functions, such as over-current, over-voltage, overload protection, etc.

[0003] The rectifier of the existing inverter is directly installed inside the inverter cabinet. Since the position of the rectifier and the switch module is uncontrollable, there are many terminal heads and the wiring cannot be guaranteed to be at the same level, it is difficult to ensure the tightness of the connection of each terminal head, resulting in poor connection of the working contacts, affecting the stability of the circuit and easily causing damage to the inverter. Utility Model Content

[0004] The purpose of the utility model is to provide a new frequency converter which is easy to maintain the rectifier, so as to solve the problem that the rectifier of the existing frequency converter is directly installed inside the frequency converter cabinet, the positions of the rectifier and the switch module are uncontrollable, there are many wiring heads and it cannot be ensured that the wiring is at the same level, it is difficult to ensure the connection tightness of each wiring head, resulting in poor connection of the working contacts, affecting the stability of the circuit and easily causing damage to the frequency converter.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of frequency converter that is easy to maintain a rectifier, including a frequency converter cabinet, a base fixedly connected to the bottom of the frequency converter cabinet, and a switch module fixedly connected to the inner top of the frequency converter cabinet, a terminal post is provided at the bottom of the switch module, a slide rod fixedly connected to the inner side of the top of the frequency converter cabinet, a controllable plate slidably connected to the outer side of the slide rod, a rectifier plate fixedly connected to the bottom side of the controllable plate by screws, a lead screw threadedly connected to the top of the controllable plate, the bottom end of the lead screw passes through the back of the frequency converter cabinet and is fixedly connected to a driven wheel, and a rear shell is fixedly connected to the back of the frequency converter cabinet.

[0006] As a preferred technical solution of the utility model, a wiring groove is provided at the bottom of the base, and the wiring groove passes through the bottom of the frequency conversion cabinet.

[0007] As a preferred technical solution of the utility model, a terminal block is provided on the side of the rectifier plate, and the terminal block is connected to the terminal post through a circuit.

[0008] As an optimal technical solution of the utility model, a bottom groove is opened on the side of the rear shell, a motor is fixedly connected to the inner side of the bottom groove, and a driving wheel is fixedly connected to the output shaft of the motor; a controllable board is installed on the inner side of the frequency converter cabinet through a sliding rod, and the other side of the controllable board is threadedly connected to the outer side of the screw rod, and the driven wheel installed on the top of the screw rod is meshed and connected with the driving wheel on the output shaft of the motor. The motor drives the driving wheel to rotate, and the screw rod on the inner side of the driven wheel can drive the controllable board to rotate, so that the rectifier plate on the front of the controllable board can be adjusted to the same horizontal position as the terminal of the switch module, so as to ensure the connection tightness of each terminal head.

[0009] As a preferred technical solution of the utility model, a fan body is fixedly connected to the side surface of the rear shell, and a mesh cover is provided on the inner side of the fan body.

[0010] As an optimal technical solution of the utility model, a moisture drainage hole is opened on the back of the frequency converter cabinet, and the moisture drainage hole is connected to the inner side of the rear shell; a rear shell through which the moisture drainage hole is connected is fixedly connected to the rear side of the frequency converter cabinet, and a mesh cover is installed on the side of the fan body installed on the back of the rear shell, which can effectively remove the humid gas inside the frequency converter cabinet.

[0011] As a preferred technical solution of the utility model, a sliding groove is provided on the top side of the controllable plate, and the inner side of the sliding groove is slidably connected to the outer side of the sliding rod.

[0012] As a preferred technical solution of the present invention, the driving wheel is meshedly connected with the driven wheel, and both the driving wheel and the driven wheel are made of stainless steel.

[0013] As a preferred technical solution of the utility model, the side surface of the rectifier plate is fixedly connected to the conical plate, and the conical plate is fixedly connected to the inner side of the bottom of the controllable plate by screws.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model installs the controllable board through a sliding rod on the inner side of the frequency conversion cabinet, and the other side of the controllable board is connected with the outer side of the screw rod through a thread, and the driven wheel installed on the top of the screw rod is meshed and connected with the driving wheel on the output shaft of the motor. The motor drives the driving wheel to rotate, and the screw rod on the inner side of the driven wheel can drive the controllable board to rotate, so that the rectifier plate on the front side of the controllable board can be adjusted to the same horizontal position as the switch module terminal, so as to ensure the connection tightness of each terminal head.

[0016] The utility model fixes a rear shell with a moisture discharge hole at the rear side of the frequency conversion cabinet, and a mesh cover is installed on the side of the fan body installed on the back of the rear shell, so that the humid gas inside the frequency conversion cabinet can be effectively discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the structural front view of the utility model;

[0018] Figure 2 This is a back view of the structure of the utility model;

[0019] Figure 3 This is a controllable board diagram of the structure of the utility model;

[0020] Figure 4 This is a diagram showing the combination of the driving wheel and the driven wheel of the structure of the utility model.

[0021] In the figure: 1. frequency conversion cabinet; 2. base; 3. wiring slot; 4. switch module; 5. terminal; 6. slide rod; 7. screw rod; 8. controllable board; 9. screw; 10. rectifier plate; 11. wiring board; 12. driven wheel; 13. driving wheel; 14. motor; 15. bottom slot; 16. rear shell; 17. fan body; 18. mesh cover; 19. moisture drainage hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a new frequency converter for rectifier maintenance, including a frequency converter cabinet 1, a base 2 is fixedly connected to the bottom of the frequency converter cabinet 1, and a switch module 4 is fixedly connected to the inner top of the frequency converter cabinet 1, a terminal 5 is provided at the bottom of the switch module 4, a slide rod 6 is fixedly connected to the inner side of the top of the frequency converter cabinet 1, a controllable board 8 is slidably connected to the outer side of the slide rod 6, a rectifier board 10 is fixedly connected to the bottom side of the controllable board 8 by screws 9, a screw rod 7 is threadedly connected to the top of the controllable board 8, the bottom end of the screw rod 7 passes through the back of the frequency converter cabinet 1 and is fixedly connected to a driven wheel 12, and a rear shell 16 is fixedly connected to the back of the frequency converter cabinet 1.

[0024] In summary, the controllable board 8 is installed through the slide bar 6 on the inner side of the frequency conversion cabinet 1, and the other side of the controllable board 8 is connected with the outer side of the screw rod 7 by thread. The driven wheel 12 installed on the top of the screw rod 7 is meshed and connected with the driving wheel 13 on the output shaft of the motor 14. The motor 14 drives the driving wheel 13 to rotate, which can make the screw rod 7 on the inner side of the driven wheel 12 drive the controllable board 8 to rotate, so that the rectifier plate 10 on the front of the controllable board 8 can be adjusted to the same horizontal position as the terminal 5 of the switch module 4, which can ensure the connection tightness of each terminal, and the frequency conversion cabinet The rear side of the cabinet 1 is fixedly connected with a rear shell 16 having a moisture discharge hole 19 therethrough, and the side of the fan body 17 installed on the back of the rear shell 16 is equipped with a mesh cover 18, which can effectively remove the humid gas inside the frequency conversion cabinet 1, and solves the problem that the rectifier of the existing frequency converter is directly installed inside the frequency conversion cabinet 1, and the positions of the rectifier and the switch module 4 are uncontrollable, there are many wiring heads and it cannot be ensured that the wiring is at the same level, it is difficult to ensure the connection tightness of each wiring head, resulting in poor connection of the working contacts, affecting the stability of the circuit, and easily causing damage to the frequency converter.

[0025] A wiring slot 3 is provided at the bottom of the base 2, and the wiring slot 3 runs through the bottom of the frequency conversion cabinet 1. A wiring board 11 is provided on the side of the rectifier plate 10, and the wiring board 11 is connected to the terminal 5 through a line. A bottom slot 15 is provided on the side of the rear shell 16, and a motor 14 is fixedly connected to the inner side of the bottom slot 15. A driving wheel 13 is fixedly connected to the output shaft of the motor 14, and the driving wheel 13 is meshed with the driven wheel 12; a controllable board 8 is installed on the inner side of the frequency conversion cabinet 1 through a slide rod 6, and the other side of the controllable board 8 is threadedly connected to the outer side of the screw rod 7. The driven wheel 12 installed on the top of the screw rod 7 is meshed with the driving wheel 13 on the output shaft of the motor 14. The motor 14 drives the driving wheel 13 to rotate, and the screw rod 7 on the inner side of the driven wheel 12 can drive the controllable board 8 to rotate, so that the rectifier plate 10 on the front of the controllable board 8 can be adjusted to the same horizontal position as the terminal 5 of the switch module 4, and the connection tightness of each wiring head can be ensured.

[0026] A fan body 17 is fixedly connected to the side of the rear shell 16, and a mesh cover 18 is provided on the inner side of the fan body 17. A moisture discharge hole 19 is opened on the back of the frequency conversion cabinet 1, and the moisture discharge hole 19 is connected to the inner side of the rear shell 16; a rear shell 16 through which the moisture discharge hole 19 is connected is fixedly connected to the rear side of the frequency conversion cabinet 1, and a mesh cover 18 is installed on the side of the fan body 17 installed on the back of the rear shell 16, which can effectively remove the humid gas inside the frequency conversion cabinet 1, and a slide groove is opened on the top side of the controllable board 8, and the inner side of the slide groove is slidably connected to the outer side of the slide rod 6.

[0027] When used specifically, first, when the rectifier plate 10 is installed, the motor 14 drives the screw rod 7 to rotate, and at the same time, the adjustment plate 8 on the outer side of the screw rod 7 slides on the slide bar 6, and the controllable plate 8 is installed on the inner side of the frequency conversion cabinet 1 through the slide bar 6. The other side of the controllable plate 8 is threadedly connected with the outer side of the screw rod 7, and the driven wheel 12 installed on the top of the screw rod 7 is meshed and connected with the driving wheel 13 on the output shaft of the motor 14. The motor 14 drives the driving wheel 13 to rotate, which can make the screw rod 7 on the inner side of the driven wheel 12 drive the controllable plate 8 to rotate, so that the controllable plate The rectifier plate 10 on the front of 8 is adjusted to the same horizontal position as the terminal 5 of the switch module 4, which can ensure the connection tightness of each terminal. When the rectifier is damaged, the motor 14 can be started again to drive the screw rod 7 to drive the adjustment plate 8 to drive the rectifier plate 10 to move out of the inner side of the frequency conversion cabinet for rapid maintenance. The rear side of the frequency conversion cabinet 1 is fixedly connected to a rear shell 16 with a moisture discharge hole 19 passing through it, and a mesh cover 18 is installed on the side of the fan body 17 installed on the back of the rear shell 16, which can effectively remove the humid gas inside the frequency conversion cabinet 1.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the appended claims and their equivalents.

Claims

1. A new frequency converter for rectifiers that facilitates maintenance, comprising a frequency converter cabinet (1), characterized in that: The bottom of the frequency conversion cabinet (1) is fixedly connected to a base (2), and the top of the inner side of the frequency conversion cabinet (1) is fixedly connected to a switch module (4), the bottom of the switch module (4) is provided with a terminal (5), the inner side of the top of the frequency conversion cabinet (1) is fixedly connected to a slide rod (6), the outer side of the slide rod (6) is slidably connected to a controllable plate (8), the bottom side of the controllable plate (8) is fixedly connected to a rectifier plate (10) via screws (9), the top of the controllable plate (8) is threadedly connected to a lead screw (7), the bottom end of the lead screw (7) passes through the back of the frequency conversion cabinet (1) and is fixedly connected to a driven wheel (12), and the back of the frequency conversion cabinet (1) is fixedly connected to a rear shell (16).

2. A new frequency converter for rectifiers that is easy to maintain according to claim 1, characterized in that: A wiring slot (3) is provided at the bottom of the base (2), and the wiring slot (3) passes through the bottom of the frequency conversion cabinet (1).

3. A new frequency converter for rectifiers that is easy to maintain according to claim 1, characterized in that: A terminal block (11) is provided on the side of the rectifier plate (10), and the terminal block (11) is connected to the terminal post (5) via a line.

4. A new frequency converter for rectifiers that is easy to maintain according to claim 1, characterized in that: A bottom groove (15) is provided on the side of the rear shell (16), a motor (14) is fixedly connected to the inner side of the bottom groove (15), and a driving wheel (13) is fixedly connected to the output shaft of the motor (14).

5. The novel frequency converter for facilitating maintenance of the rectifier according to claim 1 is characterized in that: A fan body (17) is fixedly connected to the side surface of the rear shell (16), and a mesh cover (18) is provided on the inner side of the fan body (17).

6. A new frequency converter for facilitating maintenance of rectifier according to claim 1, characterized in that: A moisture discharge hole (19) is provided on the back of the frequency conversion cabinet (1), and the moisture discharge hole (19) is connected to the inner side of the rear shell (16).

7. A new frequency converter for facilitating maintenance of rectifier according to claim 1, characterized in that: A sliding groove is provided on the top side of the controllable plate (8), and the inner side of the sliding groove is slidably connected to the outer side of the sliding rod (6).

8. A new frequency converter for rectifiers that is easy to maintain according to claim 4, characterized in that: The driving wheel (13) is meshingly connected with the driven wheel (12), and both the driving wheel (13) and the driven wheel (12) are made of stainless steel.

9. The novel frequency converter for facilitating maintenance of rectifier according to claim 1, characterized in that: The side of the rectifier plate (10) is fixedly connected to the conical plate, and the conical plate is fixedly connected to the inner side of the bottom of the controllable plate (8) via screws (9).