CN218038893U

CN218038893U - Direct current contactor auxiliary contact structure for frequency converter

Info

Publication number: CN218038893U
Application number: CN202222122442.6U
Authority: CN
Inventors: 张海杰
Original assignee: Dalian Powtran Technology Co ltd
Current assignee: Dalian Powtran Technology Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-12-13
Anticipated expiration: 2032-08-12

Abstract

The utility model discloses a direct current contactor auxiliary contact structure that converter used, which comprises a frame, be equipped with first contactor on the inner wall of frame one side, one side of frame bottom is equipped with the transmission organism, the top of transmission organism is equipped with the second contactor, be equipped with L type pedestal on the outer wall of second contactor one side, all be equipped with the fastening frame on the outer wall of second contactor and first contactor one side, the inside central point of fastening frame puts the department and is equipped with the fastening block, the one end of fastening block extends to the outside of fastening frame and is equipped with the gangboard, be fixed with the stopper seat on the fastening frame inner wall in the fastening block outside, the gangboard is kept away from and is equipped with the buffering frame on the outer wall of fastening block one side, the inside one side of buffering frame is equipped with the buffer board. The utility model discloses not only prolonged the life of contact structure, still improved the convenience when the contact structure is maintained, reached the purpose of auxiliary contact moreover.

Description

Direct current contactor auxiliary contact structure for frequency converter

Technical Field

The utility model relates to a converter contact technical field specifically is a direct current contactor auxiliary contact structure that converter used.

Background

The frequency converter is a power control device which applies frequency conversion technology and microelectronic technology and controls an alternating current motor by changing the frequency mode of a working power supply of the motor, the switching of the switching state of the frequency converter is completed by triggering pulse electric signals with certain width, and in order to ensure that contact points can be contacted, a corresponding auxiliary contact point structure is needed.

The current contact structure can better make two sets of contact heads contact, but partial contact structure is not convenient for buffer treatment to the contact heads, leads to the contact heads to produce the phenomenon of pressure loss because of the translation range is higher, and then influences the life of this contact structure, often puzzles people.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a direct current contactor auxiliary contact structure that converter used to it is not convenient for carry out the buffering processing to the contact head to provide the contact structure in solving above-mentioned background art, leads to easily producing the problem of pressure loss because of pressure is higher between two sets of contact heads.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a direct current contactor auxiliary contact structure that converter used, includes the frame, be equipped with first contactor on the inner wall of frame one side, one side of frame bottom is equipped with the transmission organism, the top of transmission organism is equipped with the second contactor, be equipped with L type pedestal on the outer wall of second contactor one side, all be equipped with the fastening frame on the outer wall of second contactor and first contactor one side, the inside central point department of putting of fastening frame is equipped with the fastening block, the one end of fastening block extends to the outside of fastening frame and is equipped with the linkage plate, be fixed with the spacing seat on the fastening frame inner wall in the fastening block outside, the linkage plate is kept away from and is equipped with the buffering frame on the outer wall of fastening block one side, the inside one side of buffering frame is equipped with the buffer board, be equipped with the linkage frame on the outer wall of buffer board one side, the one end of linkage frame extends to the outside of buffering frame and is equipped with the linkage seat, the top electricity of linkage seat is connected with first linkage contactor and second contactor through the wire, the linkage seat is kept away from on the outer wall of linkage frame and is equipped with the buffer board equidistant joint piece of buffering spring, the buffer board.

Preferably, the central point department at transmission organism top is equipped with the bar groove, the top in bar groove extends to the outside of transmission organism to carry on spacingly to the range of movement of carrier bar.

Preferably, the center position department of the inside of transmission organism rotates and is connected with the lead screw, threaded connection has the nut on the outer wall of lead screw, the center position department on nut top is equipped with the carrier bar, the top of carrier bar run through the bar groove and with the bottom fixed connection of L type seat body to carry out lateral shifting through the carrier bar drive L type seat body.

Preferably, the outer wall of one side of the transmission machine body is provided with a rotary driving part, and one end of the rotary driving part extends to the inside of the transmission machine body and is fixedly connected with one end of the screw rod, so that the screw rod is driven to rotate.

Preferably, all be equipped with the draw-in groove on the inside fastening block both sides outer wall of fastening frame, the internally mounted of draw-in groove has the fixture block, the one end of fixture block extends to the outside of draw-in groove and is equipped with the gangbar, the one end that the fixture block was kept away from to the gangbar extends to the outside of fastening frame and is equipped with the pull handle to detach the fastening block to the outside of fastening frame.

Preferably, a return spring is wound on the outer wall of the linkage rod between the pull handle and the fastening frame, and two ends of the return spring are respectively connected with the inner wall of the pull handle and the outer wall of the fastening frame, so that the clamping block is inserted into the clamping groove.

Compared with the prior art, the beneficial effects of the utility model are that: the auxiliary contact structure of the direct current contactor used by the frequency converter not only prolongs the service life of the contact structure, but also improves the convenience of the maintenance of the contact structure and achieves the purpose of auxiliary contact;

(1) The buffer spring has good elastic effect, when the two groups of contact heads are contacted, the contact heads can transmit the contact force to the buffer spring through the linkage frame, so that the buffer spring is positioned in the buffer frame to contract, the buffer frame can buffer the contact heads, the phenomenon of pressure loss caused by high pressure between the two groups of contact heads can be reduced, and the service life of the contact structure is prolonged;

(2) The pull handle is pulled longitudinally to drive the clamping block to be separated from the outside of the clamping groove through the linkage rod, and then the linkage frame is pulled transversely, so that one end of the fastening block can be detached from the outside of the fastening frame, the linkage seat can be detached and maintained conveniently, and convenience in maintenance of the contact structure is improved;

(3) The lead screw is driven to rotate through the rotary driving piece, the moving amplitude of the bearing rod is limited through the strip-shaped groove, the nut is located on the outer wall of the lead screw and slides, the nut drives the L-shaped seat body to move transversely through the bearing rod, the contact heads on one side of the second contactor can be driven to move stably at the same speed, the two sets of contact heads are made to contact, and the purpose of auxiliary contacts is achieved.

Drawings

FIG. 1 is a schematic view of the front cross-sectional structure of the present invention;

fig. 2 is an enlarged schematic structural view of a point a in fig. 1 of the present invention;

FIG. 3 is a schematic view of a cross-sectional enlarged structure of the buffering frame of the present invention;

fig. 4 is a schematic view of the partial sectional structure of the transmission body of the present invention.

In the figure: 1. a frame; 2. a first contactor; 3. a fastening block; 4. a limiting seat; 5. a buffer frame; 6. a linkage seat; 7. a contact head; 8. a linkage frame; 9. a second contactor; 10. an L-shaped seat body; 11. a carrier bar; 12. a strip-shaped groove; 13. a transmission body; 14. a nut; 15. a screw rod; 16. a rotary drive member; 17. moving and static splicing pieces; 18. a linkage plate; 19. fastening the frame; 20. a linkage rod; 21. a return spring; 22. pulling a handle; 23. a clamping block; 24. a card slot; 25. a buffer spring; 26. a buffer plate.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment of: a direct current contactor auxiliary contact structure used by a frequency converter comprises a frame 1, wherein a first contactor 2 is arranged on the inner wall of one side of the frame 1, a transmission machine body 13 is arranged on one side of the bottom of the frame 1, a strip-shaped groove 12 is arranged at the central position of the top of the transmission machine body 13, and the top end of the strip-shaped groove 12 extends to the outside of the transmission machine body 13;

when the device is used, the strip-shaped groove 12 is arranged at the top of the transmission body 13 so as to limit the moving amplitude of the bearing rod 11;

a screw rod 15 is rotatably connected to the central position inside the transmission body 13, a nut 14 is in threaded connection with the outer wall of the screw rod 15, a bearing rod 11 is arranged at the central position of the top end of the nut 14, and the top end of the bearing rod 11 penetrates through the strip-shaped groove 12 and is fixedly connected with the bottom end of the L-shaped seat body 10;

when in use, the nut 14 is positioned on the outer wall of the screw rod 15 for sliding, so that the L-shaped seat body 10 is driven by the bearing rod 11 to move transversely;

a rotary driving piece 16 is arranged on the outer wall of one side of the transmission body 13, and one end of the rotary driving piece 16 extends into the transmission body 13 and is fixedly connected with one end of the screw rod 15;

in use, the screw 15 is driven to rotate by opening the rotary drive 16;

a second contactor 9 is arranged above the transmission machine body 13, an L-shaped seat 10 is arranged on the outer wall of one side of the second contactor 9, fastening frames 19 are arranged on the outer walls of the second contactor 9 and the first contactor 2, clamping grooves 24 are arranged on the outer walls of the two sides of the fastening block 3 in the fastening frames 19, clamping blocks 23 are arranged in the clamping grooves 24, one ends of the clamping blocks 23 extend to the outer portions of the clamping grooves 24 and are provided with linkage rods 20, and one ends, far away from the clamping blocks 23, of the linkage rods 20 extend to the outer portions of the fastening frames 19 and are provided with pull handles 22;

when in use, the clamping block 23 is detached to the outside of the clamping groove 24, so that the fastening block 3 is detached to the outside of the fastening frame 19;

a return spring 21 is wound on the outer wall of the linkage rod 20 between the pull handle 22 and the fastening frame 19, and two ends of the return spring 21 are respectively connected with the inner wall of the pull handle 22 and the outer wall of the fastening frame 19;

when in use, the latch 23 is inserted into the slot 24 by the elastic reset force of the reset spring 21;

a fastening block 3 is arranged at the center position inside the fastening frame 19, one end of the fastening block 3 extends to the outside of the fastening frame 19 and is provided with a linkage plate 18, and a limiting seat 4 is fixed on the inner wall of the fastening frame 19 at the outer side of the fastening block 3;

the outer wall of one side, away from the fastening block 3, of the linkage plate 18 is provided with a buffer frame 5, one side inside the buffer frame 5 is provided with a buffer plate 26, the outer wall of one side of the buffer plate 26 is provided with a linkage frame 8, one end of the linkage frame 8 extends to the outside of the buffer frame 5 and is provided with a linkage seat 6, and the top of the linkage seat 6 is electrically connected with the tops of the first contactor 2 and the second contactor 9 through wires;

all be equipped with contact head 7 on the outer wall of linkage seat 6 keeping away from linkage frame 8 one side, the central point department of putting of linkage seat 6 bottom all is equipped with sound splicing 17, installs equidistant buffer spring 25 on the outer wall of buffer plate 26 keeping away from linkage frame 8 one side, and the one end that buffer spring 25 kept away from buffer plate 26 is connected with the inner wall of buffering frame 5.

When the fastening device is used, firstly, the screw rod 15 is driven to rotate through the rotary driving piece 16, after the movement amplitude of the bearing rod 11 is limited through the strip-shaped groove 12, the nut 14 is located on the outer wall of the screw rod 15 to slide, the nut 14 drives the L-shaped seat body 10 to transversely move through the bearing rod 11, the contact head 7 on one side of the second contactor 9 can be driven to horizontally move stably at the uniform speed, at the moment, two groups of contact heads 7 touch each other, the purpose of an auxiliary contact can be achieved, then, the elastic action of the buffer spring 25 is achieved, the contact head 7 transmits the touch force to the buffer spring 25 through the linkage frame 8, the buffer spring 25 is located inside the buffer frame 5 to contract, the contact head 7 can be buffered, the phenomenon of pressure loss caused by high pressure between the two groups of contact heads 7 can be reduced, the integrity of the contact head 7 can be ensured, finally, the fastening device can be pulled longitudinally, the fastening device drives the fixture block 23 to be separated from the outside of the fixture groove 24 through the linkage rod 20, then, the fastening frame 8 can be pulled transversely, one end of the fastening block 3 can be separated from the outside, the fixture block 19, the fixture block can be detached from the interior of the linkage frame, and the reset spring can be stably installed on the reset spring, and the reset spring 21, and the reset block can be conveniently, and the reset block can be detached from the interior of the fixture frame 19, and the interior of the linkage frame, and the reset spring can be conveniently, and the reset block can be detached from the reset spring.

Claims

1. The auxiliary contact structure of the direct current contactor for the frequency converter is characterized by comprising a rack (1), wherein a first contactor (2) is arranged on the inner wall of one side of the rack (1), a transmission body (13) is arranged on one side of the bottom of the rack (1), a second contactor (9) is arranged above the transmission body (13), an L-shaped seat body (10) is arranged on the outer wall of one side of the second contactor (9), a fastening frame (19) is arranged on the outer wall of one side of the second contactor (9) and the first contactor (2), a fastening block (3) is arranged at the central position inside the fastening frame (19), a buffer frame (5) is arranged on the outer wall of one side, far away from the fastening block (3), of one end of the fastening block (3) extends to the outside of the fastening frame (19) and is provided with a linkage plate (18), a buffer plate (26) is arranged on one side of the buffer plate (5), a linkage frame (8) is arranged on the outer wall of one side of the buffer plate (26), a wire of the linkage frame (6) is electrically connected with the first contactor (6), and a first contactor (6) is electrically connected with a wire (6), all be equipped with contact head (7) on linkage seat (6) keep away from the outer wall of linkage frame (8) one side, the central point department of putting of linkage seat (6) bottom all is equipped with sound splicing (17), buffer board (26) are kept away from and are installed equidistant buffer spring (25) on the outer wall of linkage frame (8) one side, the one end that buffer board (26) were kept away from in buffer spring (25) is connected with the inner wall of buffering frame (5).

2. A dc contactor auxiliary contact structure for a frequency converter according to claim 1, wherein: a strip-shaped groove (12) is formed in the center of the top of the transmission machine body (13), and the top end of the strip-shaped groove (12) extends to the outside of the transmission machine body (13).

3. The auxiliary contact structure of a dc contactor for a frequency converter according to claim 2, wherein: the utility model discloses a bearing device of L type pedestal, including transmission organism (13), the inside central point of transmission organism (13) puts the department and rotates to be connected with lead screw (15), threaded connection has nut (14) on the outer wall of lead screw (15), the central point on nut (14) top puts the department and is equipped with carrier bar (11), the top of carrier bar (11) run through bar groove (12) and with the bottom fixed connection of L type pedestal (10).

4. A dc contactor auxiliary contact structure for a frequency converter according to claim 3, wherein: install rotary driving piece (16) on the outer wall of transmission organism (13) one side, rotary driving piece (16)'s one end extend to the inside of transmission organism (13) and with the one end fixed connection of lead screw (15).

5. A dc contactor auxiliary contact structure for a frequency converter according to claim 1, wherein: all be equipped with draw-in groove (24) on fastening block (3) both sides outer wall of fastening frame (19) inside, the internally mounted of draw-in groove (24) has fixture block (23), the one end of fixture block (23) extends to the outside of draw-in groove (24) and is equipped with gangbar (20), the one end that fixture block (23) was kept away from in gangbar (20) extends to the outside of fastening frame (19) and is equipped with pull handle (22).

6. A dc contactor auxiliary contact structure for a frequency converter according to claim 5, wherein: and a return spring (21) is wound on the outer wall of the linkage rod (20) between the pull handle (22) and the fastening frame (19), and two ends of the return spring (21) are respectively connected with the inner wall of the pull handle (22) and the outer wall of the fastening frame (19).