CN219591739U

CN219591739U - Novel frequency converter of controllable rectifier

Info

Publication number: CN219591739U
Application number: CN202320627758.2U
Authority: CN
Inventors: 夏金华; 熊俐; 刘海
Original assignee: Wuhan Taixinda Electronics Co ltd
Current assignee: Wuhan Taixinda Electronics Co ltd
Priority date: 2023-03-28
Filing date: 2023-03-28
Publication date: 2023-08-25
Anticipated expiration: 2033-03-28

Abstract

The utility model relates to the technical field of frequency converters, and provides a novel frequency converter of a controllable rectifier, which comprises a bottom frame, a frequency converter main body arranged on the top surface of the bottom frame, and a second limiting plate and a first limiting plate which are fixed on the top surface of the bottom frame and respectively arranged on the front side and the rear side of the frequency converter main body, wherein two clamping pieces symmetrically arranged on the left side and the right side of the frequency converter main body are fixed on the top surface of the bottom frame; according to the utility model, the pressing plate pushes the frequency converter main body to approach to the direction of the first limiting plate, in the process, when the plug moves to the inclined section, the connector starts to move into the plug wire hole by overcoming the elastic force of the spring under the extrusion of the part where the inclined section is positioned, when the connector continues to move to the second straight section, the connector just completely enters the plug wire hole, and then the contact end on the end face of the connector can be tightly contacted with the conductive contact in the plug wire hole, so that a good electrical connection relation is maintained, looseness is avoided, and the problem that the connection compactness of each plug is difficult to ensure in the related art is solved.

Description

Novel frequency converter of controllable rectifier

Technical Field

The utility model relates to the technical field of frequency converters, in particular to a novel frequency converter of a controllable rectifier.

Background

The frequency converter mainly comprises a rectifying unit (alternating current to direct current), a filtering unit, an inverting unit (direct current to alternating current), a braking unit, a driving unit, a detecting unit micro-processing unit and the like. The frequency converter is used for adjusting the voltage and frequency of the output power supply by switching on and off the internal IGBT, and providing the required power supply voltage according to the actual requirement of the motor, so as to achieve the purposes of energy saving and speed regulation.

The utility model provides a novel converter of controllable rectifier, this converter, including supporting fixed frame, a spacing seat is installed to the front end of supporting fixed frame, install spacing screw thread pivot on the spacing seat of No. one, manual rotating handle is installed to the upper end of spacing screw thread pivot, spacing fixed briquetting is installed to the one end that manual rotating handle was kept away from to spacing screw thread pivot, no. two spacing seats are installed to the front end of supporting fixed frame, no. two frequency converter machine cases are installed to the upper end of spacing seat, data display device is installed to the front end of frequency converter machine case. According to the novel frequency converter of the controllable rectifier, the traditional silicon rectifier and the AC contactor are integrated in the controllable rectifier, so that the production cost is reduced; and the adaptability to the environment is improved, and the quality requirement on the power grid is reduced.

However, the following problems are found in implementing the above technique: above-mentioned converter is through the inside that inserts the fixed slot of connection with the fixed plug of connection when the installation, and goes into the inside of spacing fixed draw-in groove through spacing fixed fixture block card, makes the one end of connecting the fixed plug and connect working contact, and because the plug is more and lack stop gear, is difficult to guarantee the connection compactness of each plug, leads to working contact to connect poorly easily, influences the stability of circuit, causes the harm to the converter easily.

Disclosure of Invention

The utility model provides a novel frequency converter of a controllable rectifier, which solves the problem that connection compactness of plugs is difficult to ensure in the related technology.

The technical scheme of the utility model is as follows: the utility model provides a novel converter of controllable rectifier, includes the chassis, places in the converter main part of chassis top surface, fixes at the chassis top surface and respectively with the second limiting plate and the first limiting plate of both sides around the converter main part, the top surface of chassis is fixed with two symmetries and sets up the centre gripping piece in the converter main part left and right sides, the plug wire hole has been seted up to the left and right sides face of converter main part, the downthehole wire terminal that inserts of plug wire, be provided with on the second limiting plate and order about the converter main part to be close to and make wire terminal stablely peg graft in the manual part in the plug wire hole under the extrusion of both sides centre gripping piece to first limiting plate.

Preferably, the wire terminal comprises a connector, wherein a contact end and limit guide posts symmetrically arranged at two sides of the contact end are fixed at one end of the connector, facing the main body of the frequency converter.

Preferably, one end of the connector, which is opposite to the main body of the frequency converter, is fixed with a wire, and the clamping piece is provided with a guide groove for limiting the wire.

Preferably, the inner wall of the plug wire hole is fixed with a conductive contact matched with the contact end.

Preferably, two limit grooves are formed in opposite sides of the two sides of the conductive contact, a spring is fixed on the inner wall of the limit groove, a sleeve cover is fixed at the outer side end of the spring, the sleeve cover is in sliding connection with the limit grooves, and limit guide posts on two sides of the contact end are respectively inserted into the sleeve covers in the two limit grooves.

Preferably, the clamping piece comprises a first straight section, an inclined section and a second straight section which are integrally connected, and the first straight section is in transitional connection with the second straight section through the inclined section.

Preferably, the tail end of the second straight section is fixed with the side edge of the first limiting plate.

Preferably, the first straight segment has a larger pitch than the second straight segment.

Preferably, the manual part comprises a threaded rod, a pressing plate is fixed at the tail end of the threaded rod, the pressing plate abuts against the front end face of the frequency converter main body, a rotary table is coaxially fixed at the head end of the threaded rod, and a handle eccentrically arranged with the rotary table is fixed at the front end face of the rotary table.

Preferably, the second limiting plate is fixedly embedded with a nut, and the threaded rod is in threaded connection with the nut.

The working principle and the beneficial effects of the utility model are as follows:

according to the utility model, the pressing plate pushes the frequency converter main body to approach to the direction of the first limiting plate, in the process, the connector of each wire terminal is propped against the first straight section of the clamping piece by the elasticity of the spring and moves along the first straight section along with the pushing of the pressing plate, when the pressure plate moves to the inclined section, the connector starts to move towards the plug wire hole by overcoming the elasticity of the spring under the extrusion of the part where the inclined section is positioned, when the connector continues to move to the second straight section, the contact end on the end face of the connector can be tightly contacted with the conductive contact in the plug wire hole at the moment after the connector just completely enters the plug wire hole, so that a good electrical connection relation is maintained, looseness is avoided, and the problem that the connection compactness of each plug is difficult to ensure in the related technology is solved.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

Fig. 1 is a schematic diagram of a novel frequency converter structure of a controllable rectifier according to the present utility model;

fig. 2 is a schematic top view of a novel inverter of the controllable rectifier according to the present utility model;

FIG. 3 is a schematic diagram illustrating a cross-sectional structure of a novel frequency converter of a controllable rectifier according to the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 3A according to the present utility model;

in the figure: 1. a chassis; 2. a frequency converter main body; 21. a plug wire hole; 22. a pressure plate; 23. a conductive contact; 24. a limit groove; 25. a spring; 26. a cover; 3. a first limiting plate; 4. a second limiting plate; 41. a nut; 5. a manual component; 51. a threaded rod; 52. a turntable; 53. a handle; 6. a clamping piece; 61. a guide groove; 7. a wire terminal; 71. a joint; 72. a wire; 73. limiting guide posts; 74. and a contact end.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 and 2, the present embodiment provides a technical solution: the utility model provides a novel converter of controllable rectifier, including chassis 1, place in the converter main part 2 of chassis 1 top surface, fix at the chassis 1 top surface and respectively with the second limiting plate 4 and the first limiting plate 3 of both sides around the converter main part 2, the top surface of chassis 1 is fixed with two symmetries and sets up the centre gripping piece 6 in the converter main part 2 left and right sides, centre gripping piece 6 includes three sections integrated into one piece's first straight section, incline section and the straight section of second, first straight section passes through incline section and the straight section transitional coupling of second, the terminal of the straight section of second is fixed with the side of first limiting plate 3, the interval of the straight section of first is greater than the interval of the straight section of second, this interval can ensure that converter main part 2 can get into smoothly, make the rear end face and the first limiting plate 3 of converter main part 2 conflict.

Referring to fig. 3 and 4, a wire insertion hole 21 is formed in the left and right side surfaces of the inverter main body 2, a wire terminal 7 is inserted in the wire insertion hole 21, the wire terminal 7 includes a connector 71, a contact end 74 is fixed at one end of the connector 71 facing the inverter main body 2, and limit guide posts 73 symmetrically arranged at two sides of the contact end 74, a wire 72 is fixed at one end of the connector 71 facing away from the inverter main body 2, a guide groove 61 for limiting the wire 72 is formed in the clamping piece 6, a conductive contact 23 matched with the contact end 74 is fixed on the inner wall of the wire insertion hole 21, and after the connector 71 completely enters the wire insertion hole 21, the contact end 74 on the end surface of the connector 71 can be in close contact with the conductive contact 23 in the wire insertion hole 21, so that a good electrical connection relationship is maintained, and looseness is avoided.

Referring to fig. 4, two limiting grooves 24 are formed on opposite sides of two sides of the conductive contact 23, a spring 25 is fixed on an inner wall of the limiting groove 24, a cover 26 is fixed at an outer side end of the spring 25, the cover 26 is slidably connected with the limiting groove 24, and limiting guide posts 73 on two sides of a contact end 74 are respectively inserted into the covers 26 in the two limiting grooves 24, so that the contact end 74 on the connector 71 and an end face thereof can be guided, and the contact end 74 can smoothly contact with the conductive contact 23 in the plug wire hole 21 and be tightly connected.

Referring to fig. 2 and 3, a manual component 5 for driving the frequency converter main body 2 to approach the first limiting plate 3 and stably inserting the wire terminal 7 into the wire insertion hole 21 under the extrusion of the clamping pieces 6 at two sides is arranged on the second limiting plate 4, the manual component 5 comprises a threaded rod 51, the tail end of the threaded rod 51 is fixedly provided with a pressure plate 22, the pressure plate 22 abuts against the front end face of the frequency converter main body 2, the head end of the threaded rod 51 is coaxially fixedly provided with a rotary table 52, the front end face of the rotary table 52 is fixedly provided with a handle 53 eccentrically arranged with the rotary table 52, the second limiting plate 4 is fixedly embedded with a nut 41, the threaded rod 51 is in threaded connection with the nut 41, the rotary table 52 can be rotated through the handle 53, the threaded rod 51 is driven to rotate through the rotary table 52, the threaded rod 51 is pushed against the front end face of the frequency converter main body 2 through the threaded relation of the threaded rod 51, and the pressure plate 22 abuts against the frequency converter main body 2 to approach the first limiting plate 3.

The working principle and the use flow of the embodiment are as follows: during installation, the frequency converter main body 2 can be placed on the top surface of the chassis 1, each wire terminal 7 is pre-inserted into the wire insertion hole 21, then the rotary table 52 is rotated through the handle 53, the rotary table 52 drives the threaded rod 51 to rotate, the threaded rod 51 and the nut 41 are in threaded relation, the threaded rod 51 pushes the pressure plate 22 to abut against the front end surface of the frequency converter main body 2, the pressure plate 22 pushes the frequency converter main body 2 to approach the first limiting plate 3, in the process, the connector 71 of each wire terminal 7 abuts against the first straight section of the clamping plate 6 by the elastic force of the spring 25, and advances along the first straight section along with the pushing of the pressure plate 22, when the frequency converter main body moves to the inclined section, the connector 71 starts to move towards the wire insertion hole 21 by overcoming the elastic force of the spring 25 under the extrusion of the part where the inclined section is located, and after the connector 71 just completely enters the wire insertion hole 21, the contact end 74 on the end surface of the connector 71 can be in close contact with the conductive contact 23 in the wire insertion hole 21 at the moment, and further good electrical connection relation is kept, when the frequency converter main body 2 moves to the first limiting plate 3 and the wire insertion hole 21 is completely connected to the wire insertion hole 2 completely.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a novel converter of controllable rectifier, includes chassis (1), places in converter main part (2) of chassis (1) top surface, fixes in chassis (1) top surface and with second limiting plate (4) and first limiting plate (3) of both sides around converter main part (2) respectively, a serial communication port, the top surface of chassis (1) is fixed with two symmetries and sets up grip block (6) in converter main part (2) left and right sides, wiring hole (21) have been seted up to the left and right sides face of converter main part (2), wiring hole (21) interpolation is equipped with wire terminal (7), be provided with on second limiting plate (4) and order about converter main part (2) to be close to first limiting plate (3) and make wire terminal (7) stablely peg graft in manual part (5) in wiring hole (21) under the extrusion of both sides grip block (6).

2. The novel frequency converter of the controllable rectifier according to claim 1, wherein the wire terminal (7) comprises a connector (71), and a contact end (74) and limit guide posts (73) symmetrically arranged at two sides of the contact end (74) are fixed at one end of the connector (71) towards the main body (2) of the frequency converter.

3. The novel frequency converter of the controllable rectifier according to claim 2, wherein one end of the connector (71) facing away from the frequency converter main body (2) is fixed with a wire (72), and the clamping piece (6) is provided with a guide groove (61) for limiting the wire (72).

4. The novel frequency converter of the controllable rectifier according to claim 2, wherein the inner wall of the wire insertion hole (21) is fixed with a conductive contact (23) matched with the contact end (74).

5. The novel frequency converter of the controllable rectifier according to claim 4, wherein two limit grooves (24) are formed in opposite sides of the two sides of the conductive contact (23), a spring (25) is fixed on the inner wall of the limit groove (24), a sleeve cover (26) is fixed at the outer side end of the spring (25), the sleeve cover (26) is slidably connected with the limit groove (24), and limit guide posts (73) on two sides of the contact end (74) are respectively inserted into the sleeve covers (26) in the two limit grooves (24).

6. The novel frequency converter of the controllable rectifier according to claim 1, wherein the clamping piece (6) comprises a first straight section, an inclined section and a second straight section which are integrally connected, and the first straight section is in transitional connection with the second straight section through the inclined section.

7. The novel frequency converter of a controllable rectifier according to claim 6, wherein the end of the second straight segment is fixed to the side of the first limiting plate (3).

8. The novel frequency converter of a controllable rectifier of claim 6 wherein said first straight segment spacing is greater than said second straight segment spacing.

9. The novel frequency converter of the controllable rectifier according to claim 1, wherein the manual component (5) comprises a threaded rod (51), a pressing plate (22) is fixed at the tail end of the threaded rod (51), the pressing plate (22) abuts against the front end face of the frequency converter main body (2), a rotary table (52) is coaxially fixed at the head end of the threaded rod (51), and a handle (53) eccentrically arranged with the rotary table (52) is fixed at the front end face of the rotary table (52).

10. The novel frequency converter of the controllable rectifier according to claim 9, wherein a nut (41) is fixedly embedded on the second limiting plate (4), and the threaded rod (51) is in threaded connection with the nut (41).