A large-current measurement power fitting and a measurement method thereof

Abstract

The present application relates to the field of current measuring fittings, and specifically discloses a large-current measuring power fitting and a measuring method thereof, which solves the problem of poor flexibility and large error caused by large conductor resistance value of the existing large-current measuring power fitting which is generally fixed in series in a circuit, and proposes the following scheme, which comprises an outer frame, a mounting plate, a sliding frame, an ammeter, a supporting plate, a clamping seat, a clamping piece, a supporting seat, a rotating shaft, a clamping rod, a clamping jaw, a copper bar, a wire connection terminal, a meter connection terminal, a clamping assembly, a sliding frame, a separation assembly, an extension piece, a push seat, an insulating cover, a gear, a double-sided rack, and a cover setting assembly, the cover setting assembly is used to drive the double-sided rack to slide after the two push seats are separated from each other and the sliding frame, so that the upper and lower insulating covers are rotated towards each other, and the copper bar is protected by the insulating cover. The present fitting is flexible, convenient to replace the conductor, accurate to measure different current values, and safe to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of current measuring fittings, in particular to a large current measuring power fitting and a measuring method thereof. BACKGROUND

[0002] The large current measuring power fitting is a device integrating the mechanical fixing, current carrying function and large current measuring function of the power fitting, and is mainly used for large current measurement and monitoring in high-voltage transmission lines, busbars of substations and the like. Strong electric field is generated by large current (especially more than 10kA), and the traditional through-hole Hall sensor has insufficient insulation spacing, and creeping discharge is prone to occur. The shunt measurement needs to be directly connected in series in the circuit, and the insulation structure is complex and bulky.

[0003] The existing large current measuring power fitting is generally directly connected in series in the circuit, and has poor flexibility, and is inconvenient and flexible to transfer, so as to realize flexible detection of different circuits and different nodes. In order to ensure that the large current can be carried, the conductor of the existing large current measuring power fitting is usually thick, which increases the resistance, and when the current fluctuates and is lower than the peak value, the large resistance will cause large error to the measurement accuracy. Therefore, a large current measuring power fitting and a measuring method thereof are proposed. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the present application provides a large current measuring power fitting and a measuring method thereof, which solves the problem that the existing large current measuring power fitting is generally fixed in series in the circuit, has poor flexibility, and has large conductor resistance value, which is prone to large error.

[0005] In order to solve the above technical problems, the basic technical scheme of the present application is as follows:

[0006] A large current measuring power fitting, comprising an outer frame, a mounting plate connected to the front side of the outer frame, a sliding frame slidingly arranged in the outer frame, a current meter installed on the rear side of the outer frame, support plates connected to both ends of the mounting plate and located in the outer frame, clamping seats slidingly arranged on the upper and lower sides of the support plates, clamping pieces capable of elastically deforming slidingly arranged on the upper and lower clamping seats, a support seat connected to the sliding frame, a rotating shaft rotatably installed on the upper and lower sides of both ends of the support seat, a clamping rod connected to each rotating shaft, and a clamping jaw connected to the end of the clamping rod away from the rotating shaft on the upper and lower sides, and a copper bar clamped in the clamping jaw on the upper and lower sides, and a line connection terminal and a meter connection terminal are respectively installed on both sides of the outer frame, and both are connected to the clamping piece through a wire.

[0007] The support plate is provided with a clamping assembly for universal clamping of copper bars with different diameters, a sliding frame is slidingly arranged on the support base, a disengaging assembly is arranged on the sliding frame, the disengaging assembly is used to drive the upper and lower clamping rods to rotate away from each other when the two sliding frames slide towards each other on both sides, so as to place the copper bar on the clamping piece, telescopic members are symmetrically installed at both ends of the support base, and the two telescopic members are connected with the push seats which are in contact with the sliding frame at one end away from each other, insulating covers are rotatably connected to the upper and lower sides of the mounting plate, gears are connected to both ends of each insulating cover, a double-sided rack is engaged between the gears on the upper and lower sides, and a cover assembly is further arranged in the outer frame, the cover assembly is used to drive the double-sided rack to slide after the two push seats move away from each other and are separated from the sliding frame, so that the upper and lower insulating covers rotate towards each other, and the copper bar is protected by the insulating cover.

[0008] Preferably, the front side of the outer frame is connected with a reinforcing cross plate, the mounting plate is connected to the inner side of the cross plate in the outer frame, the inner walls of the two sides of the outer frame are each provided with a guide rail, the two ends of the sliding frame are slidingly arranged in the guide rails on both sides, the line connection terminals and the surface connection terminals on the left and right sides are connected with the clamping pieces on the left and right sides through wires, and the wires are embedded in the outer frame and the mounting plate, and the line connection terminals and the surface connection terminals are further connected with the circuit and the ammeter through wires.

[0009] Preferably, the disengaging assembly comprises a sliding groove frame, a sliding piece and a sliding column, the sliding groove frame is connected to one side of the upper and lower clamping rods away from each other, the sliding pieces are slidingly arranged on the left and right ends of the upper and lower sides of the support base and are respectively located on one side of the upper and lower clamping rods away from each other, and the sliding column is connected to one side of the sliding piece close to the clamping rod and is slidingly arranged in the sliding groove frame.

[0010] Preferably, the upper and lower sides of the support base are each connected with a sliding rod holder three, the sliding pieces are slidingly sleeved on the outer sides of the respective sliding rod holders three, springs three are connected between the sliding pieces and the support base and are sleeved on the outer sides of the sliding rod holders three, the two sides of the support base are each connected with a sliding rod holder four, and the sliding frames on the two sides are slidingly sleeved on the outer sides of the respective sliding rod holders four, springs four are connected between the sliding frames and the support base and are sleeved on the outer sides of the sliding rod holders four.

[0011] Preferably, the cover assembly comprises a sliding rod holder five, a sliding plate and a turning plate two, the sliding rod holder five is connected to the inner wall of the outer frame, the sliding plate is slidingly sleeved on the outer side of the sliding rod holder five, and the turning plate two is rotatably connected between the sliding plate and the respective double-sided rack, the push seat is in contact with the sliding plate, and the sliding plate and the inner wall of the outer frame are further connected with a spring five which is sleeved on the outer side of the sliding rod holder five.

[0012] Preferably, the inner wall of the outer frame is connected with a guide rod holder, the outer side of the guide rod holder is slidingly sleeved with a sleeve frame, and the double-sided rack is connected to the sleeve frame.

[0013] Preferably, the clamping assembly comprises an opening, a connecting frame, a sleeve plate, and a second sliding rod holder, the opening is formed through the clamping seat, the connecting frame is slidingly sleeved in the opening, the clamping pieces are connected to the upper and lower connecting frames on the mutually approaching side ends of the upper and lower clamping seats, the sleeve plate is connected to the upper and lower connecting frames on the mutually far apart side ends of the upper and lower clamping seats, the second sliding rod holder is connected to the mutually far apart side of the upper and lower clamping seats, the sleeve plate is slidingly sleeved on the outer side of the second sliding rod holder, and the sleeve plate and the clamping seat are connected with a second spring sleeved on the outer side of the second sliding rod holder.

[0014] Preferably, the upper and lower connecting sides of the support plate are connected with a first sliding rod holder, the clamping seat is slidingly sleeved on the outer side of the first sliding rod holder, and the clamping seat and the support plate are connected with a first spring sleeved on the outer side of the first sliding rod holder.

[0015] Preferably, the mutually far apart side of the left and right clamping seats is connected with an arc plate, and the inner wall of the upper and lower insulating covers is connected with an arc seat matched with the arc plate.

[0016] A large current measurement method, comprising the following steps:

[0017] Step one: control the two sides of the telescopic member to contract to drive the two sides of the push seat to approach each other, to abut the two sides of the sliding frame to approach each other, and through the disengagement assembly, to drive the upper and lower clamping rods to move away from each other, then place the copper bar between the upper and lower clamping jaws, and then control the two sides of the telescopic member to extend again, so that the upper and lower clamping jaws approach each other to clamp the copper bar;

[0018] Step two: control the sliding frame to drive the copper bar clamped on the clamping jaw to move to the left and right ends between the upper and lower clamping pieces, then control the telescopic member to extend again to drive the two sides of the push seat to move away from each other, and the two sides of the sliding frame to move away from each other, through the disengagement assembly, to drive the upper and lower clamping rods to move away from each other, until the copper bar is placed on the lower clamping piece;

[0019] Step three: with the extension of the telescopic member, the push seat will cancel the contact with the sliding frame, and cooperate with the cover assembly to drive the double-sided rack to approach each other, and then drive the gear to rotate through meshing, so that the upper and lower insulating covers can rotate towards each other, and the copper bar supported on the lower clamping piece is covered with the insulating cover, to avoid the risk of electric leakage during large current detection;

[0020] Step four: the rotation of the upper and lower side insulation cover close to each other, also will push the upper and lower side clamping piece close to each other, to jointly support the copper bar on the lower side clamping piece is stable clamping, then the two sides of the line connection terminal and measurement circuit through the wire connection, the two sides of the table connection terminal and ammeter through the wire connection, can be through the voltage of the copper bar two ends, and its resistance, using ohm's law accurately measured current.

[0021] The beneficial effects of the present application are:

[0022] 1、The technical scheme of the present application can drive the two sides of the slide frame close to each other by controlling the two sides of the telescopic piece to shrink, drive the upper and lower side slide piece close to each other by rotating the rotating plate, and drive the upper and lower side clamping rod and the claw close to each other by sliding the slide column and the slide groove frame, so as to clamp the copper bar with different diameters, and when the two sides of the telescopic piece are elongated, the two sides of the slide frame can be pushed away from each other under the action of the spring four, the upper and lower side slide pieces are driven away from each other, the upper and lower side clamping rod and the claw are pulled away from each other, and the copper bar is conveniently clamped and replaced, the slide rail is conveniently controlled to drive the slide, the copper bar is conveniently delivered between the upper and lower side clamping pieces, the clamping of the copper bar is cancelled when the copper bar is between the upper and lower side clamping pieces, the copper bar can be supported on the lower side clamping piece, the replacement flexibility of the copper bar as a conductor is greatly improved, different diameters and resistance values of the copper bar can be replaced at different periods of current size, the influence of resistance is reduced, and high-precision measurement of current is realized.

[0023] 2、The technical scheme of the present application is characterized in that the slide rod frame one is symmetrically connected on the support plate, the clamping seat can be slidably sleeved on the slide rod frame one, and is in a state of being away from each other under the action of the spring one, so as to conveniently deliver the clamping piece in it, and the sleeve plate is slidably sleeved on the slide rod frame two on the upper and lower side clamping seat, and the upper and lower side sleeve plates can be close to each other under the action of the spring two, and the clamping pieces are close to each other, so that when the upper and lower side clamping seats are pushed close to each other, the upper and lower side clamping pieces will first clamp the copper bar, and then the upper and lower side clamping seats are close to each other, the clamping piece pushes the sleeve plate to slide on the slide rod frame two to compress the spring two, so that the clamping piece and the clamping seat can slide relative to each other, that is, the clamping piece and the copper bar can be stably clamped and combined, the current can be conducted, and the copper bar with different diameters and resistance values can be clamped universally, improving the universality.

[0024] 3、The technical scheme of the present application controls the extension of the two side telescopic members to drive the two side pushers to move away from each other, so that when the copper bar is on the lower clamping piece and is supported, the upper and lower clamping rods and the clamping jaws can be driven to rotate away from each other, and as the two side pushers move away from each other, the pushers can abut against the slide plate to push the double-sided rack to slide and drive the gear to rotate when the pushers are disengaged from the slide frame and the upper and lower clamping rods and the clamping jaws are completely rotated to move away from the clamping seat, so that the upper and lower side insulating covers can be driven to rotate to move close to each other, the structure on the copper bar and the support plate can be covered, copper bar discharge and leakage can be avoided, and at the same time, the upper and lower side insulating covers rotating to move close to each other can also drive the arc plates connected to the arc seats on the clamping seats to abut against each other, drive the upper and lower side clamping seats to automatically move close to each other, and clamp the copper bar stably and commonly, thereby improving the safety. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic view of the present application;

[0026] Figure 2 is a sectional view of the side structure of the present application;

[0027] Figure 3 is a schematic view of the rear structure of the present application;

[0028] Figure 4 is a schematic view of the structure inside the outer frame of the present application;

[0029] Figure 5 is a schematic view of the related structure on the slide frame and the support plate of the present application;

[0030] Figure 6 is a schematic view of the related structure on the slide frame of the present application;

[0031] Figure 7 is a schematic view of the local structure on the slide frame of the present application;

[0032] Figure 8 is a schematic view of the structure on the two side support plates and the copper bar of the present application;

[0033] Figure 9 is a schematic view of the related structure on the support plate of the present application;

[0034] Figure 10 is a schematic view of the related structure of the insulating cover and the support plate of the present application;

[0035] Figure 11 is a schematic view of the related structure on the insulating cover of the present application.

[0036] BRIEF DESCRIPTION OF DRAWINGS:

[0037] 1. Outer frame; 2. Reinforcing cross plate; 3. Mounting plate; 4. Ammeter; 5. Wire connection terminal; 6. Meter connection terminal; 7. Guide rail; 8. Slide carriage; 9. Support base; 10. Support plate; 11. Slide rod frame one; 12. Clamp; 13. Spring one; 14. Opening; 15. Connecting frame; 16. Clamping piece; 17. Sleeve plate; 18. Slide rod frame two; 19. Spring two; 20. Rotating shaft; 21. Clamping rod; 22. Claw; 23. Copper rod; 24. Slide frame; 25. Slide rod bracket three; 26. Slide plate; 27. Slide column; 28. Spring three; 29. ​​Slide rod bracket four; 30. Slide frame; 31. Rotating plate one; 32. Spring four; 33. Telescopic component; 34. Push seat; 35. Insulating cover; 36. Gear; 37. Guide rod bracket; 38. Sleeve frame; 39. Double-sided rack; 40. Slide rod bracket five; 41. Slide plate; 42. Rotating plate two; 43. Spring five; 44. Arc plate; 45. Arc seat. Detailed Implementation

[0038] The following will be combined with the appendix Figure 1 To be continued Figure 11 The technical solutions in the embodiments of the present invention have been clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1:

[0040] like Figures 1-11 As shown, this invention discloses a high-current measuring power fitting, including an outer frame 1, a mounting plate 3 connected to the front side of the outer frame 1, a slide 8 slidably disposed inside the outer frame 1, an ammeter 4 mounted on the rear side of the outer frame 1, support plates 10 inside the outer frame 1 connected to both ends of the mounting plate 3, clamps 12 slidably disposed on the upper and lower sides of the support plates 10, and elastically deformable clamping pieces 16 slidably disposed on the upper and lower clamps 12, a support base 9 connected to the slide 8, a rotating shaft 20 rotatably mounted on the upper and lower sides of both ends of the support base 9, a clamping rod 21 connected to each rotating shaft 20, and a cooperating claw 22 connected to the end of the upper and lower corresponding clamping rods 21 away from the rotating shaft 20, and a copper rod 23 clamped in the upper and lower claws 22, and wire connection terminals 5 and meter connection terminals 6 respectively installed on both sides of the outer frame 1, and both are connected to the clamping pieces 16 through wires;

[0041] The support plate 10 is provided with a clamping assembly for universal clamping of copper bars 23 of different diameters. The support base 9 is slidably provided with a sliding frame 30, and the sliding frame 30 is provided with a disengagement assembly. When the two sliding frames 30 slide towards each other, the disengagement assembly drives the upper and lower clamping rods 21 to rotate away from each other to place the copper bar 23 on the clamping piece 16. The support base 9 is symmetrically provided at both ends with telescopic members 33, and the two telescopic members 33 are connected at one end with push seats 34 that abut against the sliding frame 30. The mounting plate 3 is rotatably connected at both ends with insulating covers 35, and both ends of each insulating cover 35 are connected with gears 36. The gears 36 on the upper and lower sides are meshingly connected with a double-sided rack 39. The outer frame 1 is further provided with a cover assembly. When the two push seats 34 move away from each other and are separated from the sliding frame 30, the cover assembly drives the double-sided rack 39 to slide, so that the upper and lower insulating covers 35 rotate towards each other, and the copper bar 23 is protected by the insulating cover.

[0042] The outer frame 1 is connected at the front side with a reinforcing cross plate 2, and the mounting plate 3 is connected to the inner side of the reinforcing cross plate 2 in the outer frame 1. The two inner walls of the outer frame 1 are each provided with a guide rail 7, and the two ends of the sliding frame 8 are slidably arranged in the two guide rails 7. The line connection terminals 5 and the surface connection terminals 6 on the left and right sides are each connected to the clamping pieces 16 on the left and right sides through wires, and the wires are embedded in the outer frame 1 and the mounting plate 3. The line connection terminals 5 and the surface connection terminals 6 are further connected to the circuit and the ammeter 4 through wires.

[0043] Among them, the line connection terminals 5, the surface connection terminals 6, the clamping pieces 16, the copper bars 23 and the wires are conductive metals, and the remaining structures connected or related to the line connection terminals 5, the surface connection terminals 6, the clamping pieces 16 and the copper bars 23 are all made of insulating materials such as plastic, ceramic or other composite materials to improve safety. Meanwhile, the guide rails 7 are made of existing electric screw guide rails, electric roller guide rails, etc. to realize automatic control of the sliding frame 8.

[0044] The reinforcing cross plate 2 can strengthen the overall structural strength of the outer frame 1, and also facilitates the installation of the mounting plate 3 thereon. Since the line connection terminals 5 and the surface connection terminals 6 are each provided in two and arranged on the two sides of the outer frame 1, and the clamping pieces 16 are also provided on the left and right sides, each line connection terminal 5 and surface connection terminal 6 can be connected to the corresponding clamping piece 16 on the same side through embedded wires to realize current conduction with the clamping piece 16. When the clamping pieces 16 clamp the copper bars 23, a complete circuit is formed. Meanwhile, the line connection terminals 5 and the surface connection terminals 6 can be connected to external wires on the outside, and the external wires on the two line connection terminals 5 are connected to the main current to conduct, and the surface connection terminals 6 are connected to the ammeter 4 to conduct, so that the voltage at both ends of the copper bar 23 can be measured by the ammeter 4, and the current can be measured by Ohm's law. The line connection terminals 5 and the surface connection terminals 6 can also be conveniently connected to the main current, and have higher flexibility.

[0045] Example 2:

[0046] like Figures 1-11 As shown, the present invention discloses a high current measuring power fitting. Compared with Embodiment 1, this embodiment discloses a structure that is detached from the component.

[0047] The detachment assembly includes a sliding frame 24, a sliding piece 26, and a sliding column 27. The sliding frame 24 is connected to the upper and lower clamping rods 21 on opposite sides. The sliding piece 26 is slidably disposed at both ends of the upper and lower sides of the support base 9, and is respectively located on opposite sides of the upper and lower clamping rods 21. The sliding column 27 is connected to the side of the sliding piece 26 near the clamping rod 21 and slides within the sliding frame 24. The upper and lower ends of the sliding frame 30 are rotatably connected to the upper and lower sliding pieces 26 with a rotating plate 31.

[0048] When the telescopic components 33 on both sides are controlled to retract, they can drive the push seats 34 on both sides to move closer to each other and push the sliding frames 30 on both sides to move closer to each other, causing the rotating plate 31 to rotate. At the same time, it drives the upper and lower sliding pieces 26 to move closer to each other, and through the sliding column 27 connected to the sliding piece 26 and sliding in the sliding groove frame 24, it pushes the upper and lower clamping rods 21 to move closer to each other around their respective rotating shafts 20. In this way, the upper and lower pawls 22 can move closer to each other to clamp the copper rod 23.

[0049] The upper and lower sides of the support base 9 are connected to slide rod brackets 25. Slide plates 26 are slidably sleeved on the outside of slide rod brackets 25 on their respective sides. A spring 28 sleeved on the outside of slide rod brackets 25 connects the slide plate 26 and the support base 9. Slide rod brackets 29 are connected to both sides of the support base 9. Slide frames 30 on both sides are slidably sleeved on the outside of slide rod brackets 29 on their respective sides. A spring 32 sleeved on the outside of slide rod brackets 29 connects the slide frame 30 and the support base 9.

[0050] When the telescopic component 33 moves the two push seats 34 away from each other, under the action of spring 4 32 and spring 3 28, the two sliding frames 30 will move away from each other, and the upper and lower sliding pieces 26 will also move away from each other. This will pull the upper and lower clamping rods 21 to move the pawls 22 away from each other, thus removing the clamping of the copper rod 23. This makes it easier to clamp or replace copper rods 23 with different diameters and resistance values. When the guide rail 7 moves the slide 8 to slide, and delivers the copper rod 23 clamped between the upper and lower pawls 22 to the upper and lower clamping pieces 16, by moving the upper and lower clamping rods 21 and pawls 22 away from each other, the copper rod 23 clamped on it can also be placed on the lower clamping piece 16 for support, so as to facilitate the subsequent formation of a conductive circuit and the measurement of current.

[0051] Example 3:

[0052] like Figures 1-11As shown, the present invention discloses a high current measuring power fitting. Compared with Embodiment 2, this embodiment discloses a structure that is detached from the component.

[0053] The enclosure assembly includes a slide bar frame 40, a slide plate 41, and a rotating plate 42. The slide bar frame 40 is connected to the inner wall of the outer frame 1. The slide plate 41 is slidably fitted on the outer side of the slide bar frame 40. The slide plate 41 and the double-sided rack 39 on each side are rotatably connected by the rotating plate 42. The push seat 34 cooperates with the slide plate 41 and abuts against it. The slide plate 41 and the inner wall of the outer frame 1 are also connected by a spring 43 fitted on the outer side of the slide bar frame 40.

[0054] When the telescopic components 33 on both sides extend, causing the pushers 34 on both sides to move away from each other and disengage from the slide frame 30, the pushers 34 on both sides will contact the slide plate 41 on their respective sides and push the slide plate 41 to slide, causing the rotating plate 42 to rotate, thereby causing the double-sided rack 39 to slide, and through meshing connection, driving the gear 36 to rotate, so that the upper and lower insulating covers 35 can move closer to each other and rotate, so as to provide insulating cover protection for the copper rod 23 and related structures on the support plate 10, and avoid safety problems such as discharge and leakage.

[0055] The inner wall of the outer frame 1 is connected to a guide rod frame 37, and a sleeve frame 38 is slidably fitted on the outer side of the guide rod frame 37. A double-sided rack 39 is connected to the sleeve frame 38. This arrangement makes the slide plate 41 more stable when sliding.

[0056] Example 4:

[0057] like Figures 1-11 As shown, the present invention discloses a high current measuring power fitting. Compared with Embodiment 3, this embodiment discloses the structure of the clamping assembly.

[0058] The clamping assembly includes an opening 14, a connecting frame 15, a sleeve 17, and a second slide bar bracket 18. The opening 14 is opened through the clamping seat 12. The connecting frame 15 is slidably sleeved through the opening 14. The clamping piece 16 is connected to the upper and lower connecting frames 15 at the ends of the upper and lower clamping seats 12 that are close to each other. The sleeve 17 is connected to the upper and lower connecting frames 15 at the ends of the upper and lower clamping seats 12 that are far apart from each other. The second slide bar bracket 18 is connected to the upper and lower clamping seats 12 at the ends that are far apart from each other. The sleeve 17 is slidably sleeved on the outside of the second slide bar bracket 18. A second spring 19 is sleeved on the outside of the second slide bar bracket 18 and connected between the sleeve 17 and the clamping seat 12.

[0059] The upper and lower sides of the support plate 10 are connected to the slide rod frame 11. The clamp 12 is slidably sleeved on the outside of the slide rod frame 11. A spring 13 sleeved on the outside of the slide rod frame 11 is connected between the clamp 12 and the support plate 10.

[0060] Through the arrangement, when the lower clamping piece 16 supports the copper bar 23, the upper and lower clamping seats 12 can be driven to approach each other, and the upper and lower clamping pieces 16 can be driven to approach each other, so as to stably clamp the copper bar 23 by the upper and lower clamping pieces 16. The spring 13 is arranged, so that the upper and lower clamping seats 12 can move away from each other without external force, and the upper and lower clamping seats 12 can approach each other under the action of external force, and the clamping piece 16 can clamp the copper bar 23. The clamping piece 16 can drive the sleeve plate 17 to slide on the slide rod frame 18 and compress the spring 19 through the connecting frame 15, so as to directly contact the copper bar 23 through the clamping piece 16. Meanwhile, the clamping piece 16 can slide relative to the clamping seat 12, so as to clamp copper bars 23 with different diameters and resistances, and improve the universality of clamping.

[0061] The clamping seats 12 on the left and right sides are connected with arc plates 44, and the inner walls of the upper and lower insulating covers 35 are connected with arc seats 45 matched with the arc plates 44. When the upper and lower insulating covers 35 approach each other and rotate to close, the arc seats 45 can drive the arc plates 44 to approach each other through abutting, so that the upper and lower clamping seats 12 approach each other, and the upper and lower clamping pieces 16 clamp the copper bar 23 and form a circuit conduction.

[0062] Embodiment five:

[0063] As shown in Figures 1-11 Figures 1-11 The application discloses a large-current measurement method, which comprises the following steps:

[0064] Step one: control the two sides of the telescopic piece 33 to shrink and drive the two sides of the push seat 34 to approach each other, abut the two sides of the slide frame 30 to approach each other and slide, and drive the upper and lower clamping rods 21 to move away from each other through the disengagement assembly, then place the copper bar 23 between the upper and lower clamping jaws 22, and then control the telescopic piece 33 to extend again, so that the upper and lower clamping rods 21 drive the clamping jaws 22 to approach each other and clamp the copper bar 23;

[0065] Step two: control the slide frame 8 to drive the copper bar 23 clamped on the clamping jaw 22 to move to between the left and right ends of the upper and lower clamping pieces 16, then control the telescopic piece 33 to extend again and drive the two sides of the push seat 34 to move away from each other, so that the two sides of the slide frame 30 move away from each other, and the upper and lower clamping rods 21 drive the clamping jaws 22 to move away from each other through the disengagement assembly, until the copper bar 23 is placed on the lower clamping piece 16;

[0066] Step three: with the extension of the telescopic piece 33, the push seat 34 will cancel the contact with the slide frame 30, cooperate with the cover assembly, drive the double-sided rack 39 to approach each other, and then drive the gear 36 to rotate through meshing, so that the upper and lower insulating covers 35 can approach each other and rotate, and the copper bar 23 supported on the lower clamping piece 16 is insulated, so as to avoid the risk of electric leakage during large-current detection;

[0067] Step four: the rotation of the upper and lower side insulation cover 35 closer to each other, will also push the upper and lower side of the clamping piece 16 closer to each other, to jointly support the copper bar 23 on the lower clamping piece 16 stable clamping, then the two sides of the line terminal 5 and the measurement circuit through the wire connection, the two sides of the table terminal 6 and ammeter 4 through the wire connection, that is, through the copper bar 23 both ends of the voltage, and combined with its resistance, using Ohm's law to accurately measure the current.

[0068] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A high-current measuring electrical fitting, comprising an outer frame (1), a mounting plate (3) connected to the front side of the outer frame (1), a slide (8) slidably disposed inside the outer frame (1), and an ammeter (4) mounted on the rear side of the outer frame (1), characterized in that, The mounting plate (3) is connected to a support plate (10) inside the outer frame (1) at both ends. The support plate (10) is slidably provided with a clamp (12) on the upper and lower sides. The clamp (12) on the upper and lower sides is slidably provided with a clamp piece (16) that can elastically deform. The slide (8) is connected to a support base (9). The upper and lower sides of the support base (9) are rotatably installed with a rotating shaft (20). Each rotating shaft (20) is connected with a clamp rod (21). The upper and lower clamp rods (21) are connected to a cooperating claw (22) at the end away from the rotating shaft (20). The claws (22) on the upper and lower sides are fitted with copper rods (23). The outer frame (1) is respectively equipped with a wire connection terminal (5) and a meter connection terminal (6). The support plate (10) is provided with a clamping assembly, which is used to universally clamp copper rods (23) of different diameters. A sliding frame (30) is slidably provided on the support base (9). A release assembly is provided on the sliding frame (30). The release assembly is used to drive the upper and lower clamping rods (21) to rotate away from each other when the two sliding frames (30) slide away from each other, so as to place the copper rod (23) on the clamping plate (16). Telescopic members (33) are symmetrically installed at both ends of the support base (9), and the ends of the telescopic members (33) that are away from each other are connected to the sliding frame (31). 0) With the counteracting push base (34), the mounting plate (3) is rotatably connected to the upper and lower sides with insulating covers (35). Each insulating cover (35) is connected to two ends with gears (36). The gears (36) on the upper and lower sides are meshed with a double-sided rack (39). The outer frame (1) is also provided with a covering assembly. The covering assembly is used to drive the double-sided rack (39) to slide after the push bases (34) on both sides move away from each other and separate from the sliding frame (30), so that the upper and lower insulating covers (35) move closer to each other and rotate to provide insulating cover protection for the copper rod (23). The front side of the outer frame (1) is connected to a reinforcing horizontal plate (2), and the mounting plate (3) is connected to the horizontal plate (2) on the inner side of the outer frame (1). The inner walls on both sides of the outer frame (1) are equipped with guide rails (7). The two ends of the slide (8) are slidably arranged in the guide rails (7) on both sides. The wire connection terminals (5) and meter connection terminals (6) on the left and right sides are connected to the clamps (16) on the left and right sides through wires. The wires are embedded in the outer frame (1) and the mounting plate (3). The wire connection terminals (5) and meter connection terminals (6) are also connected to the circuit and the ammeter (4) through wires. The disengagement assembly includes a sliding frame (24), a sliding piece (26), and a sliding column (27). The sliding frame (24) is connected to the upper and lower clamping rods (21) on opposite sides. The sliding piece (26) is slidably disposed at both ends of the upper and lower sides of the support base (9), and is respectively located on opposite sides of the upper and lower clamping rods (21). The sliding column (27) is connected to the side of the sliding piece (26) near the clamping rod (21) and slides within the sliding frame (24). A rotating plate (31) is rotatably connected between the upper and lower ends of the sliding frame (30) and the upper and lower sliding pieces (26). The upper and lower sides of the support base (9) are connected to the slide rod frame three (25). The slide plate (26) is slidably sleeved on the outside of the slide rod frame three (25) on its respective side. The slide plate (26) and the support base (9) are connected by the spring three (28) sleeved on the outside of the slide rod frame three (25). The two sides of the support base (9) are connected to the slide rod frame four (29). The slide frame (30) on both sides is slidably sleeved on the outside of the slide rod frame four (29) on its respective side. The slide frame (30) and the support base (9) are connected by the spring four (32) sleeved on the outside of the slide rod frame four (29).

2. The high-current measuring power fitting according to claim 1, characterized in that, The covering assembly includes a slide frame five (40), a slide plate (41), and a rotating plate two (42). The slide frame five (40) is connected to the inner wall of the outer frame (1). The slide plate (41) is slidably fitted on the outer side of the slide frame five (40). The slide plate (41) and the double-sided rack (39) on each side are rotatably connected by the rotating plate two (42). The push seat (34) cooperates with the slide plate (41) to abut. The slide plate (41) and the inner wall of the outer frame (1) are also connected by a spring five (43) fitted on the outside of the slide frame five (40).

3. A high-current measuring power fitting according to claim 2, characterized in that, The inner wall of the outer frame (1) is connected to a guide rod frame (37), and a sleeve frame (38) is slidably sleeved on the outer side of the guide rod frame (37). The double-sided rack (39) is connected to the sleeve frame (38).

4. A high-current measuring power fitting according to claim 1, characterized in that, The clamping assembly includes an opening (14), a connecting frame (15), a sleeve plate (17), and a second sliding rod frame (18). The opening (14) is opened through the clamping seat (12). The connecting frame (15) is slidably sleeved through the opening (14). The clamping piece (16) is connected to the upper and lower connecting frames (15) on the side closer to each other on the upper and lower clamping seats (12). The sleeve plate (17) is connected to the upper and lower connecting frames (15) on the side farther away from each other on the upper and lower clamping seats (12). The second sliding rod frame (18) is connected to the side farther away from each other on the upper and lower clamping seats (12). The sleeve plate (17) is slidably sleeved on the outside of the second sliding rod frame (18). A second spring (19) sleeved on the outside of the second sliding rod frame (18) is connected between the sleeve plate (17) and the clamping seat (12).

5. A high-current measuring power fitting according to claim 4, characterized in that, The upper and lower sides of the support plate (10) are connected to a slide rod frame (11), the clamp (12) is slidably sleeved on the outside of the slide rod frame (11), and a spring (13) sleeved on the outside of the slide rod frame (11) is connected between the clamp (12) and the support plate (10).

6. A high-current measuring power fitting according to claim 5, characterized in that, The clamps (12) on the left and right sides are connected to an arc plate (44) on the side away from each other, and the inner walls of the insulating cover (35) on the upper and lower sides are connected to arc seats (45) that cooperate and abut against the arc plate (44).

7. A method for measuring high current, based on a high current measuring power fitting as described in any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Control the telescopic components (33) on both sides to retract and drive the push seats (34) on both sides to move closer to each other, and the sliding frames (30) on both sides to slide closer to each other. By disengaging the components, the clamping rods (21) on the upper and lower sides will rotate away from each other. Then, place the copper rod (23) between the claws (22) on the upper and lower sides. Then, control the telescopic components (33) on both sides to extend again, so that the upper and lower clamping rods (21) drive the claws (22) to move closer to each other and lock the copper rod (23). Step 2: Control the slide (8) to move the copper rod (23) clamped on the claw (22) to the gap between the upper and lower clamps (16) on both sides. Then control the telescopic component (33) to extend again to move the push seats (34) on both sides away from each other, and make the slide frames (30) on both sides move away from each other. By disengaging the component, the upper and lower clamps (21) move the claws (22) away from each other until the copper rod (23) is placed on the lower clamp (16). Step 3: As the telescopic component (33) extends, the pusher (34) will cancel its contact with the sliding frame (30) and cooperate with the cover assembly to drive the double-sided rack (39) to rotate, thereby driving the gear (36) to rotate through meshing, so that the upper and lower insulating covers (35) can rotate close to each other, and the copper rod (23) supported on the lower clamp (16) will be insulated to avoid leakage risk when detecting high current; Step 4: The rotation of the upper and lower insulating covers (35) as they move closer together will also push the upper and lower clamping plates (16) closer together to stabilize the copper rod (23) supported on the lower clamping plate (16). Then, the wire terminals (5) on both sides are connected to the measuring circuit through wires, and the meter terminals (6) on both sides are connected to the ammeter (4) through wires. By measuring the voltage at both ends of the copper rod (23) and combining it with its resistance, the current can be accurately measured using Ohm's law.

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