CN117554663B

CN117554663B - DC metering equipment

Info

Publication number: CN117554663B
Application number: CN202410038905.1A
Authority: CN
Inventors: 程兴宇; 王辉; 余根童
Original assignee: Uccc Suzhou Co ltd
Current assignee: Uccc Suzhou Co ltd
Priority date: 2024-01-11
Filing date: 2024-01-11
Publication date: 2024-03-22
Anticipated expiration: 2044-01-11
Also published as: CN117554663A

Abstract

The application relates to the technical field of intelligent load manager structures, in particular to direct current metering equipment, which comprises a lower shell, an upper shell, a circuit breaker, a PCB (printed circuit board), a conductive copper plate, a connecting piece and a supporting mechanism, wherein the PCB and the conductive copper plate are arranged on the lower shell through the supporting mechanism; the circuit breakers are arranged in a plurality, the circuit breakers are all placed on the lower shell, and the PCB and the conductive copper plate are electrically connected with the circuit breakers; the upper shell is connected with the lower shell, and the upper shell and the lower shell are both provided with connecting pieces connected with the circuit breaker; a placing groove is formed in the circuit breaker, and one side, away from the supporting mechanism, of the conductive copper plate is positioned in the placing groove; elastic conductive clamping pieces are arranged in the circuit breaker and clamp the conductive copper plate in the placing groove. The application has the effect of ensuring that the equipment can be normally used.

Description

DC metering equipment

Technical Field

The application relates to the technical field of intelligent load manager structures, in particular to direct current metering equipment.

Background

The prior circuit breaker adopts 485 communication, and is required to be set with an address firstly, the address is required to be reset by replacement equipment, communication data can be wrong after the address is disordered, and inconvenience exists in actual use and later maintenance. In order to solve the problem, a PCB is added later, voltage division design is carried out on the PCB, the voltage value of each slot position is fixed, the circuit breaker detects fixed voltage, a fixed address is determined, and the circuit breaker can determine the address as long as the circuit breaker is inserted into the slot position, and the address does not need to be additionally set.

Currently, chinese patent publication number CN219124576U discloses a dc load manager comprising a housing and a circuit breaker; a wiring terminal is arranged on one side of the front end of the shell, a socket is arranged on the front wall of the shell, the circuit breaker is inserted into the shell through the socket, two conductive copper bars and a signal PCB (printed circuit board) which are connected with the circuit breaker are fixed in the shell, the two conductive copper bars are connected with the wiring terminal, and the signal PCB is electrically connected with a control board which is fixed in the shell; the two conductive copper bars and the signal PCB are kept in upper and lower interval lamination arrangement through an insulation interval module and are fixedly connected with the shell.

When the circuit breaker is arranged in the shell, the conductive copper bar and the signal PCB are only clamped with the circuit breaker; therefore, after the first circuit breaker is installed, when the second circuit breaker is to be installed, the second circuit breaker can appear pushing the first circuit breaker to move, so that the conductive copper bar and the signal PCB board can not be connected with the first circuit breaker, or the connection effect is poor, the circuit breaker can not work normally, and the direct current charge manager can not be used normally.

Disclosure of Invention

In order to ensure that the device can be used normally, the application provides direct current metering equipment.

The application provides a direct current metering equipment adopts following technical scheme:

the direct current metering equipment comprises a lower shell, an upper shell, a circuit breaker, a PCB (printed circuit board), a conductive copper plate, a connecting piece and a supporting mechanism, wherein the PCB and the conductive copper plate are arranged on the lower shell through the supporting mechanism; the circuit breakers are arranged in a plurality, the circuit breakers are all placed on the lower shell, and the PCB and the conductive copper plate are electrically connected with the circuit breakers; the upper shell is connected with the lower shell, and the upper shell and the lower shell are both provided with connecting pieces connected with the circuit breaker; a placing groove is formed in the circuit breaker, and one side, away from the supporting mechanism, of the conductive copper plate is positioned in the placing groove; elastic conductive clamping pieces are arranged in the circuit breaker and clamp the conductive copper plate in the placing groove.

By adopting the technical scheme, the circuit breaker is firstly placed on the lower shell, then the circuit breaker is moved towards the direction close to the PCB, the PCB is electrically connected with the circuit breaker, and the conductive copper bars enter the placing groove and are clamped by the elastic conductive clamping pieces; because the elastic conductive clamping piece can have certain clamping force on the conductive copper plate, when the first circuit breaker is mounted on the lower shell and the second circuit breaker is mounted, the second circuit breaker can touch the mounted first circuit breaker, but under the action of the elastic conductive clamping piece for clamping the conductive copper plate, the first circuit breaker is relatively stable on the lower shell; when the conductive copper plate enters the placing groove and is clamped by the elastic conductive clamping piece, the PCB can be better electrically connected with the circuit breaker; after all the circuit breakers are installed, connecting the upper shell with the lower shell together, and then connecting the upper shell with the circuit breakers through a connecting piece and connecting the lower shell with the circuit breakers through a connecting piece; therefore, the elastic conductive clamping piece that this application set up can be better make the circuit breaker inject on lower casing, improves the stability of circuit breaker under the casing to guarantee that equipment can normal use.

Optionally, a first positioning mechanism is arranged on the circuit breaker, the first positioning mechanism comprises a first rotating shaft, a torsion spring, a connecting rod, a first positioning block, a button and a first adjusting component, an adjusting cavity is formed in the circuit breaker, the first rotating shaft is rotatably arranged on the circuit breaker and located in the adjusting cavity, the torsion spring is sleeved on the first rotating shaft, one end of the torsion spring is connected with the first rotating shaft, and the other end of the torsion spring is connected with the circuit breaker; the connecting rod is arranged on the first rotating shaft, the first positioning block is arranged on the connecting rod, a first through hole communicated with the adjusting cavity is formed in the circuit breaker, a positioning hole is formed in the lower shell, and one end, far away from the connecting rod, of the first positioning block penetrates through the first through hole and enters the positioning hole; the circuit breaker is provided with a sliding hole communicated with the adjusting cavity, and the button is arranged in the sliding hole in a sliding way; the first adjusting component is arranged on the circuit breaker, and the connecting rod and the button are connected with the first adjusting component.

Through adopting the technical scheme, when the elastic conductive clamping piece clamps the conductive copper plate, after the PCB is electrically connected with the circuit breaker, the button is pressed, and the button drives the connecting rod to rotate through the first adjusting component, so that the first positioning block on the connecting rod passes through the first through hole on the circuit breaker and is clamped with the positioning hole on the lower shell; therefore, the first positioning mechanism can be used for connecting one end of the circuit breaker, which is far away from the elastic conductive clamping piece, on the lower shell, so that the stability of the circuit breaker on the lower shell can be improved.

Optionally, the first adjusting component comprises a first adjusting block, an adjusting rod, a limiting rod, a second adjusting block, a first spring, a third adjusting block, a fixing rod and a second spring, wherein the first adjusting block is arranged on the connecting rod, one end of the adjusting rod is hinged to the circuit breaker, and the limiting rod is fixed on the adjusting rod; the second adjusting block is arranged on the side wall of the adjusting cavity in a sliding manner, and the second adjusting block abuts against the first adjusting block; the second adjusting block is sequentially provided with an entering groove, a limiting groove and a resetting groove, one end of the resetting groove, which is far away from the limiting groove, is communicated with the entering groove, and the entering groove, the limiting groove and the resetting groove can slide with the limiting rod; when the limiting rod is positioned in the limiting groove, the first positioning block is positioned in the positioning hole, and the torsion spring is positioned in a deformed state; one end of the first spring is connected with the circuit breaker, and the other end of the first spring is connected with the second adjusting block; the third adjusting block is arranged on the side wall of the adjusting cavity in a sliding manner, and is abutted against the second adjusting block; one end of the fixed rod is connected with the third adjusting block, and the other end of the fixed rod is connected with the button; the second spring is sleeved on the fixed rod, one end of the second spring is connected with the third adjusting block, and the other end of the second spring is connected with the circuit breaker.

By adopting the technical scheme, the button is pressed, and the fixed rod on the button drives the third adjusting block to move towards the direction close to the second adjusting block, so that the second spring can deform; the third adjusting block is abutted against the second adjusting block and drives the second adjusting block to move in a direction away from the button, the limiting rod can slide from the entering groove to enter the limiting groove, and the first spring can deform; when the limiting rod is positioned in the limiting groove, the button is loosened, the second spring recovers elastic deformation, the fixing rod drives the third adjusting block to move in a direction away from the second adjusting block under the action of elastic force of the second spring, the third adjusting block does not contact the second adjusting block any more, and the button returns to the original position; when the third adjusting block drives the second adjusting block to move towards the direction away from the button, the second adjusting block pushes the first adjusting block to move, the first adjusting block drives the connecting rod to rotate, one end of the first positioning block, which is away from the connecting rod, can penetrate through the first through hole on the circuit breaker and enter the positioning hole of the lower shell, the circuit breaker is fixed on the lower shell, and the torsion spring is deformed.

Optionally, a pushing device is arranged on the lower shell, the pushing device comprises a first supporting block, a moving block, a second rotating shaft, a pushing block, a second adjusting component and an adjusting mechanism, the first supporting block is arranged in the lower shell, a first sliding groove is formed in the first supporting block, and the moving block is slidably arranged in the first sliding groove; the second rotating shaft is rotatably arranged on the first supporting block; the pushing block is arranged on the second rotating shaft and can be abutted against the circuit breaker and push the circuit breaker to move; the second adjusting component is arranged on the first supporting block and is connected with the moving block; the adjusting mechanism is arranged on the lower shell and is connected with the second rotating shaft.

By adopting the technical scheme, when one of the circuit breakers is damaged and needs to be replaced, the second adjusting component drives the moving block to slide in the first sliding groove of the first supporting block, so that the moving block moves to the position of the circuit breaker which needs to be replaced; then drive the second pivot through adjustment mechanism and rotate, the second pivot drives the impeller and rotates, and the one end that the impeller kept away from the second pivot will conflict circuit breaker to promote the circuit breaker to move towards the direction of keeping away from conductive copper, the operating personnel of being convenient for take the circuit breaker that damages needs to shift like this.

Optionally, the adjusting mechanism includes a second supporting block, a third rotating shaft, a driving block, a driven block and a third adjusting component, the second supporting block is arranged on the first supporting block, and the third rotating shaft is rotatably arranged on the second supporting block; the driving blocks are uniformly arranged on the peripheral side wall of the third rotating shaft, and a driving groove is formed between two adjacent driving blocks; the driven blocks are arranged in a plurality, the driven blocks are uniformly arranged on the peripheral side wall of the second rotating shaft, one driven block is positioned in one driving groove, and the driven blocks can slide in the driving groove; when the third rotating shaft rotates, the driving block on the third rotating shaft can drive the driven block to rotate; the third adjusting component is arranged on the lower shell and is connected with the third rotating shaft.

By adopting the technical scheme, when the moving block moves, the driven block can slide in the driving groove; after the position of the movable block is determined, the third rotating shaft is driven to rotate through the third adjusting component, the driving block on the third rotating shaft drives the driven block to rotate, the driven block drives the second rotating shaft to rotate, the second rotating shaft drives the pushing block to rotate, one end of the pushing block, far away from the second rotating shaft, can abut against the circuit breaker, and the circuit breaker is pushed to move in the direction far away from the conductive copper plate.

Optionally, an auxiliary device is arranged on the lower shell, the auxiliary device comprises a second positioning mechanism and a third positioning mechanism, the second positioning mechanism comprises a first fixed block, a second fixed block, a third fixed block, a fourth fixed block, a first fixed bolt, a second fixed bolt and a second positioning block, and a first fixed groove which is clamped with the first fixed block is formed in the lower shell; the first fixing block is provided with a first groove, the second fixing block is slidably arranged in the first groove, and the first fixing bolt penetrates through the first fixing block to be in threaded connection with the second fixing block positioned in the first groove; the third fixed block is vertically arranged on the second fixed block, a second groove is formed in the third fixed block, and the fourth fixed block is slidably arranged in the second groove; the second fixing bolt penetrates through the third fixing block to be in threaded connection with the fourth fixing block; the second positioning block is arranged on the fourth fixed block, and the circuit breaker can abut against the second positioning block; the third positioning mechanism is arranged on the lower shell, and the circuit breaker can be abutted against the third positioning mechanism.

By adopting the technical scheme, the first fixed block is clamped with the first fixed groove on the lower shell, then the second fixed block slides in the first groove of the first fixed block, and after the position of the second fixed block is determined, the first fixed bolt passes through the first fixed block to be in threaded connection with the second fixed block positioned in the first groove; then the fourth fixed block slides in the second groove of the third fixed block, and the position of the second positioning block is adjusted; after the position of the second positioning block on the fourth fixed block is determined, a second fixing bolt penetrates through the third fixed block to be in threaded connection with the fourth fixed block positioned in the second groove; enabling the side wall of the first installed breaker to abut against the second positioning block and move along the second positioning block; the third positioning mechanism is capable of defining the path of the first and subsequent all circuit breakers installed; therefore, the adjustment time is shortened, the efficiency is improved, and the phenomenon that the circuit breaker is adjusted after the elastic conductive clamping piece clamps the conductive copper plate can be reduced.

Optionally, the third positioning mechanism includes a clamping block, a first connecting block, a sliding block, a second connecting block, a third connecting block, an adjusting shaft, a third positioning block, a fourth adjusting component and a fifth adjusting component, a clamping groove is formed in the lower shell, the clamping block is clamped in the clamping groove, the first connecting block is arranged on the clamping block, a second sliding groove is formed in the first connecting block, and the sliding block is slidably arranged in the second sliding groove through the fourth adjusting component; the second connecting block is fixedly arranged on the sliding block, and the third connecting block is fixedly arranged on the second connecting block; the two adjusting shafts are respectively arranged at two ends of the third connecting block in a rotating mode, each adjusting shaft is provided with one third positioning block, and the distance between the two third positioning blocks is equal to the width of a single circuit breaker; the fifth adjusting components are arranged on the third connecting block, two fifth adjusting components are arranged, and the two fifth adjusting components are respectively connected with the two adjusting shafts.

By adopting the technical scheme, the clamping block on the first connecting block is clamped with the clamping groove on the lower shell; then, the position of the sliding block on the first connecting block is adjusted through the fourth adjusting component, so that the first breaker to be installed is positioned between the two third positioning blocks; then placing the circuit breaker on the lower shell, enabling two opposite side walls of the circuit breaker to respectively abut against the two third positioning blocks, pushing the circuit breaker towards the direction close to the conductive copper plate, enabling the conductive copper plate to enter a placing groove of the circuit breaker and be clamped by the elastic conductive clamping piece, and enabling the first circuit breaker to abut against the second positioning block; when the first circuit breaker is installed and the second circuit breaker is required to be installed and is abutted against the first circuit breaker, a third positioning block, close to the second positioning block, on the third connecting block is not vertical to the third connecting block and is positioned above the circuit breaker through a fifth adjusting component; and then, the fourth adjusting component is adjusted to enable the third connecting block to be positioned above the second circuit breaker to be installed, and a third positioning block perpendicular to the third connecting block on the third connecting block is abutted against one side, away from the first circuit breaker, of the second circuit breaker.

Optionally, the fifth adjusting component comprises a pressing block, a third spring, a first rack, a first gear, a second gear, a fixing rod and a fourth spring, wherein the pressing block is slidably arranged on the third connecting block, one end of the third spring is connected with the pressing block, and the other end of the third spring is connected with the third connecting block; the first rack is arranged on the pressing block; the first gear is rotatably arranged on the third connecting block and meshed with the first rack; the second gear is connected to the adjusting shaft in a key manner and meshed with the first gear; the fixed rod is arranged on the third connecting block in a sliding manner, a plurality of second fixed grooves are formed in the pressing block, and the second fixed grooves can be clamped with the fixed rod; one end of the fourth spring is connected with the fixed rod, and the other end of the fourth spring is connected with the third connecting block.

By adopting the technical scheme, when the first circuit breaker is installed and the second circuit breaker is required to be installed, the fixing rod is pulled towards the direction far away from the pressing block, the fourth spring deforms, so that the fixing rod is separated from the second fixing groove on the pressing block, the pressing block is pushed towards the direction of the first connecting block, the first rack on the pressing block drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the adjusting shaft to rotate, the adjusting shaft drives the third positioning block to rotate, and the third positioning block on the third connecting block, which is close to the second positioning block, is no longer perpendicular to the third connecting block and is positioned above the circuit breaker; then the fixing rod is loosened, the fourth spring recovers elastic deformation, so that the fixing rod moves towards the direction close to the pressing block, and the fixing rod is clamped with the second fixing groove of the pressing block.

Optionally, the third connecting block is provided with a reinforcing mechanism clamped with the third positioning block, the reinforcing mechanism comprises a reinforcing block, a second rack, a third gear, a rotating shaft, a fourth gear, a fifth gear and a third rack, the reinforcing block is slidably arranged on the third connecting block, and the third positioning block is provided with a reinforcing groove clamped with the reinforcing block; the second rack is arranged on the pressing block, and the third gear is rotatably arranged on the third connecting block and meshed with the second rack; the rotating shaft is rotatably arranged on the third connecting block, the fourth gear and the fifth gear are both connected to the rotating shaft in a key way, and the fourth gear is meshed with the third gear; the third rack is arranged on the reinforcing block and meshed with the fifth gear.

By adopting the technical scheme, when the pressing block moves towards the direction of the first connecting block, the second rack drives the third gear to rotate, the third gear drives the fourth gear to rotate, the fourth gear drives the rotating shaft to rotate, the rotating shaft drives the fifth gear to rotate, the fifth gear drives the third rack to move, and the third rack drives the reinforcing block to move towards the direction far away from the third positioning block; when the reinforcing block is separated from the reinforcing groove on the third positioning block, the first rack on the pressing block is meshed with the first gear, so that the pressing block which continuously moves can enable the adjusting shaft to drive the third positioning block to rotate; the reinforcing mechanism that sets up can improve the stability of third locating block on the third connecting block, reduces because the mistake runs into when pressing the briquetting, appears the phenomenon that the circuit breaker route can not be limited to third locating block motion.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the elastic conductive clamping piece can better limit the circuit breaker on the lower shell, and improve the stability of the circuit breaker on the lower shell, so that the equipment can be ensured to be normally used;

2. the auxiliary device can reduce the adjustment time and improve the efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a dc metering device according to an embodiment of the present application;

FIG. 2 is a schematic view of a positioning hole in an embodiment of the present application;

FIG. 3 is a schematic diagram of an embodiment of an interrupt circuit breaker installed in a lower housing;

FIG. 4 is a schematic structural view of a supporting mechanism according to an embodiment of the present application;

FIG. 5 is a schematic view of an elastic conductive clip according to an embodiment of the present application;

FIG. 6 is a schematic structural view of a first adjusting component according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of an auxiliary device according to an embodiment of the present application;

FIG. 8 is a schematic view of a hollow cavity according to an embodiment of the present application;

FIG. 9 is a schematic structural view of a fastening mechanism according to an embodiment of the present application;

fig. 10 is a schematic structural view of an adjusting mechanism in an embodiment of the present application.

Reference numerals: 11. a lower housing; 111. positioning holes; 12. an upper housing; 13. a circuit breaker; 131. a placement groove; 132. a mounting groove; 14. a PCB board; 15. a conductive copper plate; 16. a connecting piece; 17. a support mechanism; 171. an insulating support column; 172. installing a bolt; 2. an elastic conductive clip; 3. a first positioning mechanism; 31. a first rotating shaft; 32. a torsion spring; 33. a connecting rod; 34. a first positioning block; 35. a button; 36. a first adjustment assembly; 361. a first adjustment block; 362. an adjusting lever; 363. a limiting rod; 364. a second adjustment block; 3641. entering a groove; 3642. defining a slot; 3643. a reset groove; 365. a first spring; 366. a third adjustment block; 367. a second spring; 4. a pushing device; 41. a first support block; 411. a first chute; 42. a moving block; 43. a pushing block; 44. a second adjustment assembly; 441. a second adjustment shaft; 442. a first indication rod; 443. a second screw; 5. an adjusting mechanism; 51. a second support block; 52. a third rotating shaft; 53. an active block; 54. a driven block; 55. a third adjustment assembly; 551. a third adjustment shaft; 552. a second indication rod; 6. a second positioning mechanism; 61. a first fixed block; 62. a second fixed block; 63. a third fixed block; 64. a fourth fixed block; 65. a first fixing bolt; 66. a second fixing bolt; 67. a second positioning block; 7. a third positioning mechanism; 71. a first connection block; 711. a second chute; 72. a slide block; 73. a second connection block; 74. a third connecting block; 741. a cavity; 75. an adjustment shaft; 76. a third positioning block; 77. a fourth adjustment assembly; 771. a first adjustment shaft; 772. a first screw; 78. a fifth adjustment assembly; 781. pressing the blocks; 782. a third spring; 783. a first rack; 784. a first gear; 785. a second gear; 786. a fixed rod; 787. a fourth spring; 8. a reinforcement mechanism; 81. a reinforcing block; 82. a second rack; 83. a third gear; 84. a rotating shaft; 85. a fourth gear; 86. a fifth gear; 87. and a third rack.

Description of the embodiments

The present application is described in further detail below in conjunction with figures 1-10.

The embodiment of the application discloses direct current metering equipment.

Referring to fig. 1 and 2, a direct current metering device includes a lower case 11, an upper case 12 is connected to the lower case 11 through assembly bolts, a placement area is formed between the upper case 12 and the lower case 11, and a plurality of circuit breakers 13 are placed in the placement area; the lower shell 11 and the upper shell 12 are both provided with connecting pieces 16, the connecting pieces 16 are connecting bolts, and the connecting bolts penetrate through the upper shell 12 or the lower shell 11 to be in threaded connection with the circuit breaker 13 positioned in the placement area.

Referring to fig. 1, 3 and 4, a supporting mechanism 17 is provided on the lower housing 11, the supporting mechanism 17 includes four insulating support columns 171 placed vertically, and a first mounting hole is provided on each insulating support column 171; the insulating support columns 171 on the side far from the lower housing 11 are provided with mounting bolts 172, and the mounting bolts 172 pass through the first mounting holes on the four insulating support columns 171 to be in threaded connection with the lower housing 11.

A PCB 14 is placed between the second insulating support column 171 and the third insulating support column 171 from bottom to top; a conductive copper plate 15 is placed between the first insulating support column 171 and the second insulating support column 171, and a conductive copper plate 15 is placed between the third insulating support column 171 and the fourth insulating support column 171; the PCB 14 and the two conductive copper plates 15 are respectively provided with a second mounting through hole; the mounting bolts 172 are screwed with the lower case 11 through first mounting holes on the four insulating support columns 171, second mounting blocks on the two conductive copper plates 15, and second mounting holes on the PCB board 14.

Referring to fig. 1, 3 and 5, two placement grooves 131 are formed in each circuit breaker 13, each placement groove 131 corresponds to two conductive copper plates 15, elastic conductive clamping pieces 2 are arranged in each placement groove 131, and the conductive copper plates 15 can enter the placement grooves 131 of the circuit breakers 13 and are clamped by the elastic conductive clamping pieces 2, and the conductive copper plates 15 are electrically connected with the elastic conductive clamping pieces 2. The circuit breaker 13 between the placing grooves 131 is provided with the mounting grooves 132, the mounting grooves 132 correspond to the PCB 14, and the PCB 14 enters the mounting grooves 132 to be electrically connected with the circuit breaker 13.

The circuit breaker 13 is first made to collide with the lower housing 11, and then the circuit breaker 13 is pushed toward the direction approaching the PCB, so that the PCB 14 enters into the mounting groove 132 of the circuit breaker 13, and the conductive copper plate 15 enters into the placement groove 131 of the circuit breaker 13 and is clamped by the elastic conductive clip 2.

Referring to fig. 2, 5 and 6, an adjusting cavity is formed at one end of the circuit breaker 13 away from the elastic conductive clip 2, a first through hole communicated with the adjusting cavity is formed on the circuit breaker 13, and a positioning hole 111 is formed on the lower housing 11.

The first positioning mechanism 3 comprises a first rotating shaft 31 rotatably connected to the side wall of the adjusting cavity, and an extension rod is fixed on the first rotating shaft 31; the first rotating shaft 31 is sleeved with a torsion spring 32, one end of the torsion spring 32 is abutted against the side wall of the adjusting cavity, and the other end of the torsion spring is connected with the extension rod; the connecting rod 33 is fixedly connected to the first rotating shaft 31, a first positioning block 34 is integrally arranged at one end, far away from the first rotating shaft 31, of the connecting rod 33, a round corner is formed in one side, far away from the connecting rod 33, of the first positioning block 34, and one end, far away from the connecting rod 33, of the first positioning block 34 can penetrate through a first through hole of the circuit breaker 13 and enter the positioning hole 111 of the lower shell 11.

Referring to fig. 2, 5 and 6, the circuit breaker 13 is provided with a sliding hole communicated with the adjusting chamber, and a button 35 is slidably connected in the sliding hole.

The circuit breaker 13 is provided with a first adjusting component 36, and the first adjusting component 36 comprises a first adjusting block 361 fixedly connected to the connecting rod 33; the side wall of the adjusting cavity is connected with a second adjusting block 364 which abuts against the first adjusting block 361 in a sliding manner, the second adjusting block 364 is sequentially provided with an entering groove 3641, a limiting groove 3642 and a reset groove 3643, and one end, away from the limiting groove 3642, of the reset groove 3643 is communicated with the entering groove 3641; the second adjusting block 364 is connected with a first spring 365, and one end of the first spring 365 away from the second adjusting block 364 is connected with the circuit breaker 13.

The circuit breaker 13 is hinged with an adjusting rod 362, one end of the adjusting rod 362, which is far away from the hinged end of the circuit breaker 13, is fixedly connected with a limiting rod 363, one end of the limiting rod 363, which is far away from the adjusting rod 362, is positioned in an entering groove 3641, and the entering groove 3641, the limiting groove 3642 and a resetting groove 3643 can be slidably connected with the limiting rod 363; i.e., the limit lever 363 can move from the entry slot 3641 into the limit slot 3642, then into the reset slot 3643, and finally back into the entry slot 3641.

A third adjusting block 366 is connected to the side wall of the adjusting cavity in a sliding manner, and the third adjusting block 366 can abut against the second adjusting block 364; a fixed rod is fixedly connected to the third adjusting block 366, and one end of the fixed rod, which is far away from the third adjusting block 366, is fixedly connected with the button 35; the fixed rod is sleeved with a second spring 367, one end of the second spring 367 is connected with the fixed rod, and the other end of the second spring 367 is connected with the circuit breaker 13.

Pressing the button 35, the fixed rod on the button 35 drives the third adjusting block 366 to move towards the direction approaching the second adjusting block 364, and at this time, the second spring 367 is elongated; the third adjusting block 366 abuts against the second adjusting block 364 and drives the second adjusting block 364 to move away from the button 35, the limiting rod 363 slides from the entering groove 3641 into the limiting groove 3642, and the first spring 365 is stretched; when the limiting rod 363 is positioned in the limiting groove 3642, the button 35 is released, the second spring 367 recovers the elastic deformation, and under the action of the elastic force of the second spring 367, the fixing rod drives the third adjusting block 366 to move in a direction away from the second adjusting block 364, and the third adjusting block 366 does not abut against the second adjusting block 364 any more, so that the button 35 is recovered to the original position.

When the third adjusting block 366 drives the second adjusting block 364 to move towards the direction away from the button 35, the second adjusting block 364 pushes the first adjusting block 361 to move, the first adjusting block 361 drives the connecting rod 33 to rotate, and the connecting rod 33 drives the first positioning block 34 to move, so that one end of the first positioning block 34 away from the connecting rod 33 can pass through the first through hole on the circuit breaker 13 and enter the positioning hole 111 of the lower shell 11, the circuit breaker 13 is fixed on the lower shell 11, and the torsion spring 32 is deformed.

When it is desired that the first positioning block 34 is no longer located in the positioning hole 111, the third adjusting block 366 is pressed toward the second adjusting block 364, so that the third adjusting block 366 abuts against the second adjusting block 364 and pushes the second adjusting block 364 to move away from the push button 35, and the restricting lever 363 can enter the reset slot 3643 from the restricting slot 3642; at this time, both the first spring 365 and the second spring 367 are elongated. Then loosen button 35, first spring 365 and second spring 367 all can resume deformation, under the elasticity effect of second spring 367, the second installation piece moves towards the direction that is close to button 35, limit pole 363 enters into in-slot 3641 from reset slot 3643, at this moment torsional spring 32 can also resume deformation, under torsional spring 32 elastic force, first pivot 31 drives connecting rod 33 and rotates, first adjusting block 361 on the connecting rod 33 can contradict and keep the state of always contradicting second adjusting block 364, first locating block 34 keeps away from the first through-hole on the connecting rod 33 can pass circuit breaker 13 and enter into the adjustment intracavity. The force of the first spring 365 to restore the elastic deformation restores the button 35 to the original position.

Referring to fig. 1, 3 and 7, in order to make the conductive copper plate 15 better clamped by the elastic conductive clip 2 when the circuit breaker 13 is mounted on the lower case 11, the adjustment time of the circuit breaker 13 is reduced; an auxiliary device is provided on the lower case 11.

Referring to fig. 1, 3 and 7, the auxiliary device includes a second positioning mechanism 6, the second positioning mechanism 6 includes a first fixing block 61, and a first fixing groove that is clamped with the first fixing block 61 is formed in the lower housing 11. The first fixing block 61 is provided with a first groove at one end far away from the lower shell 11, and a second fixing block 62 is slidably connected in the first groove; the first fixing block 61 is provided with a first fixing bolt 65, and the first fixing bolt 65 passes through the first fixing block 61 to be in threaded connection with the second fixing block 62 positioned in the first groove. A third fixed block 63 is integrally arranged at one end of the second fixed block 62 far away from the lower shell 11, and the third fixed block 63 is perpendicular to the second fixed block 62; a second groove is formed in one end, far away from the second fixed block 62, of the third fixed block 63, the axis of the second groove is perpendicular to the axis of the first groove, and a fourth fixed block 64 is connected in the second groove in a sliding manner; the third fixing block 63 is provided with a second fixing bolt 66. The second fixing bolt 66 passes through the third fixing block 63 and is screwed with the fourth fixing block 64 located in the second groove. The end of the fourth fixed block 64 far away from the second fixed block 62 is fixedly connected with a second positioning block 67.

The first fixing block 61 is clamped with a first fixing groove on the lower shell 11, then the second fixing block 62 slides in a first groove of the first fixing block 61, and after the position of the second fixing block 62 is determined, a first fixing bolt 65 passes through the first fixing block 61 to be in threaded connection with a second fixing block 62 positioned in the first groove; then the fourth fixed block 64 slides in the second groove of the third fixed block 63, and the position of the second positioning block 67 is adjusted; after the position of the second positioning block 67 on the fourth fixing block 64 is determined, the second fixing bolt 66 passes through the third fixing block 63 to be in threaded connection with the fourth fixing block 64 located in the second groove.

Referring to fig. 1, 3 and 7, a clamping groove is formed in the lower housing 11, a third positioning mechanism 7 is arranged on the lower housing 11, the third positioning mechanism 7 comprises a clamping block clamped with the clamping groove, a first connecting block 71 is fixedly connected to the clamping block, a second sliding groove 711 is formed in the first connecting block 71, and a sliding block 72 is slidably connected to the second sliding groove 711. The first connecting block 71 is provided with a fourth adjusting component 77, the fourth adjusting component 77 comprises a first screw 772 rotatably connected in a second chute 711, and the first screw 772 passes through the slide block 72 and is in threaded connection with the slide block 72; the first connecting block 71 is rotatably connected with a first adjusting shaft 771, and the first adjusting shaft 771 is fixedly connected with one end of a first screw 772.

Referring to fig. 7 and 8, a second connection block 73 having an L shape is fixedly connected to the slider 72, a third connection block 74 is fixedly connected to one end of the second connection block 73 far away from the slider 72, two ends of the third connection block 74 are rotatably connected to an adjusting shaft 75, a third positioning block 76 is fixedly connected to the adjusting shaft 75, and a distance between the two third positioning blocks 76 is equal to a width of a single circuit breaker 13.

Referring to fig. 7, 8 and 9, a cavity 741 is formed in the third connecting block 74, and a second through hole communicated with the cavity 741 is formed in one end of the third connecting block 74 away from the first connecting block 71; the end of the adjustment shaft 75 remote from the third positioning block 76 is located within the cavity 741.

The third connecting block 74 is provided with two fifth adjusting components 78, one fifth adjusting component 78 corresponds to one adjusting shaft 75, the fifth adjusting component 78 comprises a pressing block 781 which is connected in the second through hole in a sliding mode, one end, close to the lower first connecting block 71, of the pressing block 781 is sleeved with a third spring 782, one end of the third spring 782 is connected with the pressing block 781, and the other end of the third spring 782 is connected with the third connecting block 74. The pressing block 781 is fixedly connected with a first rack 783 at one end far away from the first connecting block 71, a first gear 784 meshed with the first rack 783 is rotationally connected with the cavity 741, and the first gear 784 is positioned between the pressing block 781 and the adjusting shaft 75; a second gear 785 engaged with the first gear 784 is keyed to the adjustment shaft 75 within the cavity 741.

A third through hole communicated with the cavity 741 is formed in the third connecting block 74, the axis of the third through hole is perpendicular to the axis of the second through hole, a fixing rod 786 is connected in the second through hole in a sliding manner, a plurality of second fixing grooves are formed in the pressing block 781, and the second fixing grooves can be clamped with the fixing rod 786; the fixing rod 786 is sleeved with a fourth spring 787, one end of the fourth spring 787 is connected with the fixing rod 786, and the other end is connected with the third connecting block 74.

When the first circuit breaker 13 is installed, the third positioning blocks 76 on the two adjusting shafts 75 are first made to be perpendicular to the third connecting block 74, and the two third positioning blocks 76 and the third connecting block 74 are in a U-shaped structure. The first circuit breaker 13 is placed between the two third positioning blocks 76, the two third positioning blocks 76 respectively abut against the two side walls of the circuit breaker 13, the circuit breaker 13 is pushed towards the direction close to the conductive copper plate 15, and the two third positioning blocks 76 define the path of the circuit breaker 13, so that the conductive copper plate 15 is better clamped by the elastic conductive clamping piece 2.

When the installation of the first circuit breaker 13 is completed and the second circuit breaker 13 needs to be installed, the second positioning block 67 is firstly abutted against one side, away from which the second circuit breaker 13 is to be installed, of the first circuit breaker 13, then the fixing rod 786 is pulled towards the direction away from the pressing block 781, the fourth spring 787 deforms, the fixing rod 786 is separated from the second fixing groove on the pressing block 781, the pressing block 781 is pushed towards the direction of the first connecting block 71, the first rack 783 on the pressing block 781 drives the first gear 784 to rotate, the first gear 784 drives the second gear 785 to rotate, the second gear 785 drives the adjusting shaft 75 to rotate, the adjusting shaft 75 drives the third positioning block 76 to rotate, and the third positioning block 76 is no longer perpendicular to the third connecting block 74; then, the fixing rod 786 is released, and the fourth spring 787 returns to its elastic deformation, so that the fixing rod 786 moves in a direction approaching the pressing block 781, and the fixing rod 786 is engaged with the second fixing groove of the pressing block 781.

Referring to fig. 8 and 9, a fourth through hole communicating with the cavity 741 is formed in a side wall of the third connecting block 74 adjacent to the third positioning block 76, and the axis of the second through hole and the axis of the third through hole are perpendicular to the fourth through hole.

The third connecting block 74 is provided with a reinforcing mechanism 8 which is clamped with the third positioning block 76, the reinforcing mechanism 8 comprises a reinforcing block 81 which is connected in a sliding manner in the fourth through hole, and the third positioning block 76 is provided with a reinforcing groove which is clamped with the reinforcing block 81; the pressing block 781 is fixedly connected with a second rack 82, and the second rack 82 is longer than the first rack 783; a third gear 83 engaged with the second rack 82 is rotatably connected to the cavity 741; a rotating shaft 84 is rotatably connected to the side wall of the cavity 741, and a fourth gear 85 meshed with the third gear 83 is connected to one end of the rotating shaft 84 in a key manner; a fifth gear 86 is connected to one end of the rotation shaft 84, which is far away from the fourth gear 85, and a third rack 87 engaged with the fifth gear 86 is fixedly connected to the reinforcing block 81.

When the third positioning block 76 is perpendicular to the third connecting block 74, the reinforcing block 81 is clamped with the reinforcing groove on the third positioning block 76, the second rack 82 is meshed with the third gear 83, and the first rack 783 is not meshed with the first gear 784.

When the pressing block 781 moves toward the first connecting block 71, the second rack 82 drives the third gear 83 to rotate, the third gear 83 drives the fourth gear 85 to rotate, the fourth gear 85 drives the rotating shaft 84 to rotate, the rotating shaft 84 drives the fifth gear 86 to rotate, the fifth gear 86 drives the third rack 87 to move, and the third rack 87 drives the reinforcing block 81 to move away from the third positioning block 76. When the reinforcing block 81 is separated from the reinforcing groove on the third positioning block 76, the first rack 783 on the pressing block 781 is engaged with the first gear 784, so that the pressing block 781 continuing to move can rotate the adjusting shaft 75 to drive the third positioning block 76.

Referring to fig. 1, 3 and 10, a pushing device 4 is arranged on a lower shell 11, the pushing device 4 comprises a first supporting block 41, and a supporting groove clamped with the first supporting block 41 is formed in the lower shell 11; the first supporting block 41 is provided with a first sliding groove 411, and the first sliding groove 411 is slidably connected with the moving block 42. The first supporting block 41 is provided with a second adjusting assembly 44, the second adjusting assembly 44 comprises a second screw 443 rotatably connected in the first sliding groove 411, and the second screw 443 passes through the moving block 42 and is in threaded connection with the moving block 42; the first supporting block 41 is rotatably connected with a second adjusting shaft 441, one end of the second adjusting shaft 441 is fixedly connected with one end of a second screw 443, and one end of the second adjusting shaft 441 far away from the second screw 443 is rotatably connected with the lower shell 11; a first indication rod 442 abutting against the lower housing 11 is fixedly coupled to the second adjustment shaft 441 rotatably coupled to the lower housing 11.

The moving block 42 is rotatably connected with a second rotating shaft, a pushing block 43 is fixedly connected to the second rotating shaft, and the pushing block 43 is located between the conductive copper plate 15 and the PCB 14 close to one side of the lower shell 11.

Referring to fig. 1, 3 and 10, an adjusting mechanism 5 is arranged on a first supporting block 41, the adjusting mechanism 5 comprises a second supporting block 51 fixedly connected to the first supporting block 41, a third adjusting shaft 551 is rotatably connected to the second supporting block 51, a plurality of driving blocks 53 are uniformly and fixedly connected to the peripheral side wall of the third adjusting shaft 551, and a driving groove is formed between two adjacent driving blocks 53; a plurality of driven blocks 54 are uniformly and fixedly connected to the peripheral side wall of the second rotating shaft, and one driven block 54 is positioned in one driving groove, so that the driving block 53 and the driven block 54 are equivalent to two meshed gears; the follower block 54 is capable of sliding within the drive slot. The lower shell 11 is provided with a third adjusting assembly 55, the third adjusting assembly 55 comprises a third adjusting shaft 551 rotatably connected to the lower shell 11, and a second indicating rod 552 which is abutted against the lower shell 11 is fixedly connected to the third adjusting shaft 551; one end of the third adjusting shaft 551 far away from the second indication rod 552 is fixedly connected with one end of the third rotating shaft 52.

When one of the circuit breakers 13 is damaged and needs to be replaced, the first indicating rod 442 is rotated, the first indicating rod 442 drives the second adjusting shaft 441 to rotate, the second adjusting shaft 441 drives the second screw 443 to rotate, and the second screw 443 drives the moving block 42 to slide in the first sliding groove 411 of the first supporting block 41, so that the moving block 42 moves to the position of the circuit breaker 13 which needs to be replaced; when the moving block 42 moves, the driven block 54 slides in the driving groove. When the position of the moving block 42 is determined, the second indication rod 552 is rotated, the second indication rod 552 drives the third adjusting shaft 551 to rotate, the third adjusting shaft 551 drives the third rotating shaft 52 to rotate, the driving block 53 on the third rotating shaft 52 drives the driven block 54 to rotate, the driven block 54 drives the second rotating shaft to rotate, the second rotating shaft drives the pushing block 43 to rotate, and one end of the pushing block 43 away from the second rotating shaft abuts against the circuit breaker 13 and pushes the circuit breaker 13 to move towards a direction away from the conductive copper plate 15.

The implementation principle of the direct current metering equipment in the embodiment of the application is as follows: when the circuit breaker 13 is mounted on the lower housing 11, the first fixing block 61 is clamped with the first fixing groove on the lower housing 11, the position of the second locating block 67 is adjusted, after the position of the second locating block 67 is determined, the first fixing bolt 65 penetrates through the first fixing block 61 to be in threaded connection with the second fixing block 62, and the second fixing bolt 66 penetrates through the third fixing block 63 to be in threaded connection with the fourth fixing block 64.

Then clamping the clamping block on the first connecting block 71 with the clamping groove on the lower shell 11; the first adjustment shaft 75 is then rotated to adjust the position of the slider 72 on the first connection block 71 so that the first circuit breaker 13 to be installed is located between the two third positioning blocks 76. Next, the circuit breaker 13 is placed on the lower housing 11, so that two opposite side walls of the circuit breaker 13 respectively abut against the two third positioning blocks 76, and then the circuit breaker 13 is pushed toward the direction close to the conductive copper plate 15, so that the PCB 14 enters into the mounting groove 132 of the circuit breaker 13, and the conductive copper plate 15 enters into the placement groove 131 of the circuit breaker 13 and is clamped by the elastic conductive clamping piece 2.

Then, the button 35 is pressed again, so that the end of the first positioning block 34 away from the connecting rod 33 enters the positioning hole 111 of the lower housing 11.

If the second breaker 13 to be installed abuts against the first breaker 13, the fixing rod 786 is pulled in a direction away from the pressing block 781, the fourth spring 787 is deformed, the fixing rod 786 is separated from the second fixing groove on the pressing block 781, the pressing block 781 is pushed in a direction of the first connecting block 71, the second rack 82 on the pressing block 781 drives the third gear 83 to rotate, the fourth gear 85 meshed with the third gear 83 drives the rotating shaft 84 to rotate, the fifth gear 86 on the rotating shaft 84 drives the third rack 87 to move, and the third rack 87 drives the reinforcing block 81 to move in a direction away from the third positioning block 76. When the reinforcing block 81 is separated from the reinforcing groove on the third positioning block 76, the first rack 783 on the pressing block 781 is meshed with the first gear 784, the pressing block 781 is pushed continuously, the first rack 783 on the pressing block 781 drives the first gear 784 to rotate, the second gear 785 meshed with the first gear 784 drives the adjusting shaft 75 to rotate, and the adjusting shaft 75 drives the third positioning block 76 to rotate, so that the third positioning block 76 is no longer perpendicular to the third connecting block 74. Then, the fixing rod 786 is released, and the fourth spring 787 returns to its elastic deformation, so that the fixing rod 786 moves in a direction approaching the pressing block 781 and is engaged with the second fixing groove of the pressing block 781. So that the third positioning block 76 on the third connecting block 74, which is close to the second positioning block 67, is no longer perpendicular to the third connecting block 74 and is located above the circuit breaker 13. Continuing to rotate the first adjusting shaft 771 again, the third connecting block 74 is located above the second circuit breaker 13 to be installed, and the third positioning block 76 perpendicular to the third connecting block 74 abuts against the side of the second circuit breaker 13 away from the first circuit breaker 13.

If the second breaker 13 to be installed does not contact the first breaker 13, that is, a gap exists between the first breaker 13 and the second breaker 13, the position of the second positioning block 67 is adjusted so that the second positioning block 67 is positioned at one side of the second breaker 13 to be installed; the third connecting block 74 is positioned so that two third positioning blocks 76 can respectively abut against the side walls of the opposite sides of the second circuit breaker 13.

After a desired number of circuit breakers 13 are mounted on the lower housing 11, the first fixing block 61 is separated from the first fixing groove on the lower housing 11, and the latch on the first connecting block 71 is separated from the latch on the lower housing 11.

Then, the upper case 12 is abutted against the lower case 11 and the circuit breaker 13, and then the connection of the upper case 12 and the lower case 11 is achieved with assembly bolts. The connecting bolt passes through the upper shell 12 and is in threaded connection with the circuit breaker 13; finally, the connecting bolt passes through the lower shell 11 to be in threaded connection with the circuit breaker 13.

When one of the circuit breakers 13 is damaged and needs to be replaced, the connecting bolt which is in threaded connection with the damaged circuit breaker 13 is not in threaded connection with the circuit breaker 13 any more; the button 35 is then pressed so that the first positioning block 34 on this circuit breaker 13 is no longer located in the positioning hole 111 of the lower housing 11. The first indication rod 442 and the second indication rod 552 are rotated again, so that the end of the pushing block 43 away from the second rotating shaft will abut against the circuit breaker 13, and push the circuit breaker 13 to move in a direction away from the conductive copper plate 15, the operator withdraws the damaged circuit breaker 13, and finally reinstallates a new circuit breaker 13 along the path of withdrawing the damaged circuit breaker 13.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The direct current metering equipment comprises a lower shell (11), an upper shell (12), a circuit breaker (13), a PCB (printed circuit board) (14), a conductive copper plate (15), a connecting piece (16) and a supporting mechanism (17), wherein the PCB (14) and the conductive copper plate (15) are arranged on the lower shell (11) through the supporting mechanism (17); the circuit breakers (13) are arranged in a plurality, the circuit breakers (13) are all placed on the lower shell (11), and the PCB (14) and the conductive copper plate (15) are all electrically connected with the circuit breakers (13); the upper shell (12) is connected with the lower shell (11), and the upper shell (12) and the lower shell (11) are both provided with a connecting piece (16) connected with the circuit breaker (13); it is characterized in that the method comprises the steps of,

a placing groove (131) is formed in the circuit breaker (13), and one side, far away from the supporting mechanism (17), of the conductive copper plate (15) is located in the placing groove (131);

an elastic conductive clamping piece (2) is arranged in the circuit breaker (13), and the elastic conductive clamping piece (2) clamps the conductive copper plate (15) positioned in the placing groove (131);

The lower shell (11) is provided with a pushing device (4), the pushing device (4) comprises a first supporting block (41), a moving block (42), a second rotating shaft, a pushing block (43), a second adjusting component (44) and an adjusting mechanism (5),

the first supporting block (41) is arranged in the lower shell (11), a first sliding groove (411) is formed in the first supporting block (41), and the moving block (42) is slidably arranged in the first sliding groove (411); the second rotating shaft is rotatably arranged on the first supporting block (41);

the pushing block (43) is arranged on the second rotating shaft, and the pushing block (43) can be abutted against the circuit breaker (13) and push the circuit breaker (13) to move;

the second adjusting component (44) is arranged on the first supporting block (41) and is connected with the moving block (42);

the adjusting mechanism (5) is arranged on the lower shell (11) and is connected with the second rotating shaft;

an auxiliary device is arranged on the lower shell (11), the auxiliary device comprises a second positioning mechanism (6) and a third positioning mechanism (7),

the second positioning mechanism (6) comprises a first fixed block (61), a second fixed block (62), a third fixed block (63), a fourth fixed block (64), a first fixed bolt (65), a second fixed bolt (66) and a second positioning block (67),

A first fixing groove which is clamped with the first fixing block (61) is formed in the lower shell (11);

the first fixing block (61) is provided with a first groove, the second fixing block (62) is slidably arranged in the first groove, and the first fixing bolt (65) penetrates through the first fixing block (61) to be in threaded connection with the second fixing block (62) positioned in the first groove;

the third fixed block (63) is vertically arranged on the second fixed block (62), a second groove is formed in the third fixed block (63), and the fourth fixed block (64) is slidably arranged in the second groove; the second fixing bolt (66) penetrates through the third fixing block (63) to be in threaded connection with the fourth fixing block (64); the second positioning block (67) is arranged on the fourth fixed block (64), and the circuit breaker (13) can abut against the second positioning block (67);

the third positioning mechanism (7) is arranged on the lower shell (11), and the circuit breaker (13) can abut against the third positioning mechanism (7);

the third positioning mechanism (7) comprises a clamping block, a first connecting block (71), a sliding block (72), a second connecting block (73), a third connecting block (74), an adjusting shaft (75), a third positioning block (76), a fourth adjusting component (77) and a fifth adjusting component (78),

The lower shell (11) is provided with a clamping groove, the clamping block is clamped in the clamping groove, the first connecting block (71) is arranged on the clamping block, the first connecting block (71) is provided with a second sliding groove (711), and the sliding block (72) is slidably arranged in the second sliding groove (711) through the fourth adjusting component (77);

the second connecting block (73) is fixedly arranged on the sliding block (72), and the third connecting block (74) is fixedly arranged on the second connecting block (73);

the two adjusting shafts (75) are respectively and rotatably arranged at two ends of the third connecting block (74), each adjusting shaft (75) is provided with one third positioning block (76), and the distance between the two third positioning blocks (76) is equal to the width of a single circuit breaker (13);

the fifth adjusting assemblies (78) are arranged on the third connecting block (74), two of the fifth adjusting assemblies (78) are arranged, and the two fifth adjusting assemblies (78) are respectively connected with the two adjusting shafts (75); the fifth adjusting assembly (78) comprises a pressing block (781), a third spring (782), a first rack (783), a first gear (784), a second gear (785), a fixing rod (786) and a fourth spring (787),

The pressing block (781) is slidably arranged on the third connecting block (74), one end of the third spring (782) is connected with the pressing block (781), and the other end of the third spring is connected with the third connecting block (74);

the first rack (783) is arranged on the pressing block (781);

the first gear (784) is rotatably arranged on the third connecting block (74) and meshed with the first rack (783);

the second gear (785) is keyed to the adjustment shaft (75) and meshes with the first gear (784);

the fixing rod (786) is slidably arranged on the third connecting block (74), a plurality of second fixing grooves are formed in the pressing block (781), and the second fixing grooves can be clamped with the fixing rod (786); one end of the fourth spring (787) is connected with the fixing rod (786) and the other end is connected with the third connecting block (74).

2. The direct current metering device according to claim 1, wherein a first positioning mechanism (3) is arranged on the circuit breaker (13), the first positioning mechanism (3) comprises a first rotating shaft (31), a torsion spring (32), a connecting rod (33), a first positioning block (34), a button (35) and a first adjusting component (36), an adjusting cavity is arranged in the circuit breaker (13), the first rotating shaft (31) is rotatably arranged on the circuit breaker (13) and is positioned in the adjusting cavity, the torsion spring (32) is sleeved on the first rotating shaft (31), one end of the torsion spring (32) is connected with the first rotating shaft (31), and the other end of the torsion spring (32) is connected with the circuit breaker (13);

The connecting rod (33) is arranged on the first rotating shaft (31), the first positioning block (34) is arranged on the connecting rod (33), a first through hole communicated with the adjusting cavity is formed in the circuit breaker (13), a positioning hole (111) is formed in the lower shell (11), and one end, far away from the connecting rod (33), of the first positioning block (34) penetrates through the first through hole and enters the positioning hole (111);

the circuit breaker (13) is provided with a sliding hole communicated with the adjusting cavity, and the button (35) is arranged in the sliding hole in a sliding way;

the first adjusting component (36) is arranged on the circuit breaker (13), and the connecting rod (33) and the button (35) are connected with the first adjusting component (36).

3. A DC metering apparatus as claimed in claim 2, wherein the first adjustment assembly (36) comprises a first adjustment block (361), an adjustment rod (362), a limiting rod (363), a second adjustment block (364), a first spring (365), a third adjustment block (366), a fixed rod and a second spring (367),

the first adjusting block (361) is arranged on the connecting rod (33),

one end of the adjusting rod (362) is hinged on the circuit breaker (13), and the limiting rod (363) is fixed on the adjusting rod (362);

The second adjusting block (364) is arranged on the side wall of the adjusting cavity in a sliding manner, and the second adjusting block (364) abuts against the first adjusting block (361); an entering groove (3641), a limiting groove (3642) and a reset groove (3643) are sequentially formed in the second adjusting block (364), one end, away from the limiting groove (3642), of the reset groove (3643) is communicated with the entering groove (3641), and the entering groove (3641), the limiting groove (3642) and the reset groove (3643) can slide with the limiting rod (363); when the limiting rod (363) is positioned in the limiting groove (3642), the first positioning block (34) is positioned in the positioning hole (111), and the torsion spring (32) is positioned in a deformed state;

one end of the first spring (365) is connected with the circuit breaker (13) and the other end is connected with the second adjusting block (364);

the third adjusting block (366) is arranged on the side wall of the adjusting cavity in a sliding manner, and the third adjusting block (366) is abutted against the second adjusting block (364);

one end of the fixed rod is connected with the third adjusting block (366) and the other end of the fixed rod is connected with the button (35);

the second spring (367) is sleeved on the fixed rod, one end of the second spring (367) is connected with the third adjusting block (366), and the other end of the second spring is connected with the circuit breaker (13).

4. A direct current metering device according to claim 1, characterized in that the adjusting mechanism (5) comprises a second supporting block (51), a third rotating shaft (52), a driving block (53), a driven block (54) and a third adjusting assembly (55),

the second supporting block (51) is arranged on the first supporting block (41), and the third rotating shaft (52) is rotatably arranged on the second supporting block (51);

the driving blocks (53) are arranged in a plurality, the driving blocks (53) are uniformly arranged on the peripheral side wall of the third rotating shaft (52), and a driving groove is formed between two adjacent driving blocks (53);

the driven blocks (54) are arranged in a plurality, the driven blocks (54) are uniformly arranged on the peripheral side wall of the second rotating shaft, one driven block (54) is positioned in one driving groove, and the driven blocks (54) can slide in the driving groove; when the third rotating shaft (52) rotates, the driving block (53) on the third rotating shaft (52) can drive the driven block (54) to rotate;

the third adjusting component (55) is arranged on the lower shell (11) and is connected with the third rotating shaft (52).

5. The direct current metering device according to claim 1, wherein the third connecting block (74) is provided with a reinforcing mechanism (8) which is clamped with the third positioning block (76), the reinforcing mechanism (8) comprises a reinforcing block (81), a second rack (82), a third gear (83), a rotating shaft (84), a fourth gear (85), a fifth gear (86) and a third rack (87),

The reinforcing block (81) is arranged on the third connecting block (74) in a sliding manner, and the third positioning block (76) is provided with a reinforcing groove which is clamped with the reinforcing block (81);

the second rack (82) is arranged on the pressing block (781), and the third gear (83) is rotatably arranged on the third connecting block (74) and meshed with the second rack (82);

the rotating shaft (84) is rotatably arranged on the third connecting block (74), the fourth gear (85) and the fifth gear (86) are both connected on the rotating shaft (84) in a key way, and the fourth gear (85) is meshed with the third gear (83);

the third rack (87) is provided on the reinforcing block (81) and meshes with the fifth gear (86).