Large-current measurement electric power fitting and measurement method thereof

Abstract

The invention relates to the field of current measurement fittings, particularly discloses a large-current measurement electric power fitting and a measurement method thereof, and solves the problems that an existing large-current measurement electric power fitting is generally fixedly connected in series in a circuit, the flexibility is poor, the resistance value of a conductor is large, and large errors are prone to being generated. The device comprises an outer frame, a mounting plate, a sliding frame, an ampere meter, a supporting plate, a clamping seat, a clamping piece, a supporting seat, a rotating shaft, a clamping rod, a clamping jaw, a copper rod, a wire connection electric terminal, a meter connection electric terminal, a clamping assembly, a sliding frame, a separating assembly, a telescopic piece, a pushing seat, an insulating cover, a gear, a double-sided rack and a covering assembly, and the double-sided rack is driven to slide, so that the upper and lower insulating covers approach each other to rotate, and the copper rod is protected by the insulating covers. The fitting can be used flexibly, the conductors can be replaced conveniently, current values of different sizes can be measured accurately, and the fitting is safe to use.

Description

Technical Field

[0001] This invention relates to the field of current measuring fittings, and in particular to a high current measuring power fitting and its measuring method. Background Technology

[0002] High-current measurement power fittings are devices that integrate the mechanical fixing and current-carrying functions of power fittings with high-current measurement functions. They are mainly used for high-current measurement and monitoring in scenarios such as high-voltage transmission lines and substation busbars. High currents (especially above 10kA) generate strong electric fields. Traditional through-hole Hall sensors have insufficient insulation spacing, making them prone to creepage discharge; shunt measurement requires direct series connection in the circuit, resulting in complex insulation structures and large size.

[0003] Existing high-current measuring power fittings are generally connected in series in the circuit, which limits their flexibility and makes them inconvenient to move around to perform flexible testing on different circuits and nodes. Furthermore, to ensure they can handle high currents, these fittings typically have large conductors, increasing resistance. When the current fluctuates and falls below its peak value, this high resistance introduces significant errors to the measurement accuracy. Therefore, this paper proposes a new high-current measuring power fitting and its measurement method. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes a high-current measuring power fitting and its measurement method, which solves the problems that existing high-current measuring power fittings are generally fixed in series in the circuit, have poor flexibility, and have large conductor resistance, which easily leads to large errors.

[0005] To solve the above-mentioned technical problems, the basic technical solution proposed by this invention is as follows:

[0006] A high-current measuring electrical fitting includes an outer frame, a mounting plate connected to the front of the outer frame, a slide carriage slidably disposed inside the outer frame, an ammeter mounted on the rear side of the outer frame, support plates inside the outer frame connected to both ends of the mounting plate, clamps slidably disposed on the upper and lower sides of the support plates, and elastically deformable clamping pieces slidably disposed on the upper and lower clamps, a support base connected to the slide carriage, and rotating shafts rotatably mounted on the upper and lower sides of both ends of the support base, each rotating shaft being connected to a clamping rod, and corresponding clamping rods on the upper and lower sides having cooperating claws connected to their ends away from the rotating shafts, with copper rods clamped inside the claws on the upper and lower sides, and wire connection terminals and meter connection terminals respectively mounted on both sides of the outer frame, both of which are connected to the clamping pieces through wires;

[0007] The support plate is equipped with a clamping assembly for universally clamping copper rods of different diameters. A sliding frame is slidably mounted on the support base, and a release assembly is mounted on the sliding frame. The release assembly is used to drive the upper and lower clamping rods to rotate away from each other when the two sliding frames slide closer together, so as to place the copper rod on the clamping plate. Telescopic components are symmetrically mounted at both ends of the support base, and each telescopic component is connected to a pusher that abuts against the sliding frame at the opposite end. Insulating covers are rotatably connected to both the upper and lower sides of the mounting plate. Each insulating cover is connected to both ends of a gear, and a double-sided rack meshes between the gears on the upper and lower sides. A covering assembly is also provided inside the outer frame. The covering assembly is used to drive the double-sided rack to slide after the pushers on both sides move away from each other and separate from the sliding frame, so as to make the upper and lower insulating covers move closer together and rotate, thus insulating and protecting the copper rod.

[0008] Preferably, a reinforcing cross plate is connected to the front side of the outer frame, and the mounting plate is connected to the cross plate inside the outer frame. Guide rails are installed on both inner walls of the outer frame. The two ends of the carriage are slidably disposed in the guide rails on both sides. The wire connection terminals and meter connection terminals on the left and right sides are connected to the clamps on the left and right sides through wires, and the wires are embedded in the outer frame and the mounting plate. The wire connection terminals and meter connection terminals are also connected to the circuit and the ammeter through wires.

[0009] Preferably, the disengagement assembly includes a sliding frame, a sliding piece, and a sliding column. The sliding frame is connected to the upper and lower clamping rods on opposite sides. The sliding piece is slidably disposed at both ends of the upper and lower sides of the support base, and is respectively located on opposite sides of the upper and lower clamping rods. The sliding column is connected to the side of the sliding piece near the clamping rod and slides within the sliding frame. A rotating plate is rotatably connected between the upper and lower ends of the sliding frame and the upper and lower sliding pieces.

[0010] Preferably, the upper and lower sides of the support base are connected to slide rod frames three, the slide plate is slidably sleeved on the outside of the slide rod frame three on its respective side, the slide plate and the support base are connected by a spring three sleeved on the outside of the slide rod frame three, the two sides of the support base are connected to slide rod frames four, the two sides of the slide frame is slidably sleeved on the outside of the slide rod frame four on its respective side, the slide frame and the support base are connected by a spring four sleeved on the outside of the slide rod frame four.

[0011] Preferably, the cover assembly includes a slide bar frame five, a slide plate, and a rotating plate two. The slide bar frame five is connected to the inner wall of the outer frame. The slide plate is slidably fitted on the outer side of the slide bar frame five. The slide plate and the double-sided rack on each side are rotatably connected to the rotating plate two. The push seat cooperates with the slide plate to abut. The slide plate and the inner wall of the outer frame are also connected by a spring five fitted on the outer side of the slide bar frame five.

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

[0013] Preferably, the clamping assembly includes an opening, a connecting frame, a sleeve plate, and a second sliding rod frame. The opening is formed through the clamping seat, and the connecting frame is slidably fitted inside the opening. The clamping piece is connected to the upper and lower connecting frames at one end closer to each other on the upper and lower clamping seats. The sleeve plate is connected to the upper and lower connecting frames at one end further away from each other on the upper and lower clamping seats. The second sliding rod frame is connected to the upper and lower clamping seats at one end further away from each other. The sleeve plate is slidably fitted on the outside of the second sliding rod frame. A second spring fitted on the outside of the second sliding rod frame is connected between the sleeve plate and the clamping seat.

[0014] Preferably, a sliding rod frame is connected to both the upper and lower sides of the support plate, the clamp is slidably sleeved on the outside of the sliding rod frame, and a spring sleeved on the outside of the sliding rod frame is connected between the clamp and the support plate.

[0015] Preferably, the clamps on the left and right sides are connected to an arc plate on the side away from each other, and the inner walls of the insulating cover on the upper and lower sides are connected to arc seats that cooperate and abut against the arc plates.

[0016] A method for measuring high current includes the following steps:

[0017] Step 1: Control the retraction of the telescopic parts on both sides to drive the push seats on both sides to move closer to each other, and the sliding frames on both sides to slide closer to each other. By disengaging the components, the clamping rods on the upper and lower sides are driven to move away from each other and rotate. Then, the copper rod is placed between the upper and lower jaws. Then, control the telescopic parts on both sides to extend again, so that the upper and lower clamping rods drive the jaws to move closer to each other and lock the copper rod.

[0018] Step 2: Control the slide to move the copper rod clamped on the claw to the gap between the upper and lower clamps on the left and right ends. Then control the telescopic component to extend again to move the push seats on both sides away from each other and make the slide frames on both sides move away from each other. By disengaging the component, the upper and lower clamps move the claws away from each other until the copper rod is placed on the lower clamp.

[0019] Step 3: As the telescopic component extends, the pusher will stop contacting the sliding frame and cooperate with the cover assembly, driving the double-sided rack to rotate through meshing, so that the upper and lower insulating covers can rotate closer to each other, and the copper rod supported on the lower clamp will be insulated to avoid the risk of leakage when detecting high current.

[0020] Step 4: The rotation of the upper and lower insulating covers as they move closer together will also push the upper and lower clamping plates closer together, so as to stably clamp the copper rod supported on the lower clamping plate. Then, the wire terminals on both sides are connected to the measuring circuit through wires, and the meter terminals on both sides are connected to the ammeter through wires. By measuring the voltage across the copper rod and combining it with its resistance, the current can be accurately measured using Ohm's law.

[0021] The beneficial effects of this invention are:

[0022] 1. The technical solution of this invention controls the contraction of the telescopic components on both sides to drive the push seats on both sides to move closer together, which in turn drives the sliding frames on both sides to move closer together, thereby driving the rotating plate to rotate and driving the upper and lower sliding plates to move closer together. Through the sliding sleeve of the sliding column and the sliding groove frame, the clamping rods and claws on the upper and lower sides move closer together to clamp copper rods of different diameters. At the same time, when the telescopic components on both sides are extended, the spring force of the spring four can push the sliding frames on both sides to move away from each other, thereby driving the upper and lower sliding plates to move away from each other, and pulling the upper and lower clamping rods and claws away from each other. This makes it convenient to clamp and replace copper rods, and also makes it convenient to control the guide rail to drive the slide to slide and deliver the copper rod between the upper and lower clamping plates. When the copper rod is between the upper and lower clamping plates, the clamping of the copper rod is released, allowing the copper rod to fall on the lower clamping plate for support. This greatly improves the flexibility of replacing copper rods as conductors, so that copper rods of different diameters and resistance values ​​can be replaced at different times of current magnitude, thereby reducing the influence of resistance and enabling high-precision measurement of current.

[0023] 2. The technical solution of the present invention has a sliding rod frame symmetrically connected to the upper and lower sides of the support plate, and the clamp can be slidably sleeved on the sliding rod frame 1 and kept away from each other under the action of the spring 1, so as to facilitate the delivery of the copper rod to the inner clamp. At the same time, the upper and lower clamps are slidably sleeved on the sliding rod frame 2, and the upper and lower clamps can approach each other under the action of the spring 2, and push the clamps to approach each other. When the upper and lower clamps are pushed to approach each other, the upper and lower clamps will first clamp the copper rod. Then, as the upper and lower clamps approach each other, the clamps push the sleeve on the sliding rod frame 2 to compress the spring 2 and slide. This allows the clamps and the clamps to slide relative to each other, which can maintain the stable clamping and contact between the clamps and the copper rod, conduct current, and also can universally clamp copper rods of different diameters and resistance values, thus improving versatility.

[0024] 3. The technical solution of this invention controls the extension of the telescopic components on both sides to drive the push seats on both sides away from each other. When the copper rod is on the lower clamping plate and supported, it can drive the upper and lower clamping rods and claws to rotate away from each other. As the push seats move away from each other, when the push seats disengage from the sliding frame and the upper and lower clamping rods and claws are completely rotated away from the clamping seats, the push seats can also contact the sliding plate to push the double-sided rack to slide and drive the gear to rotate. This causes the upper and lower insulating covers to move closer and rotate, covering the copper rod and the structure on the support plate to prevent the copper rod from discharging or leaking electricity. At the same time, the movement of the upper and lower insulating covers will also cause the arc seat to contact the arc plate connected to the clamping seat, causing the upper and lower clamping seats to automatically move closer to each other, providing a stable and universal clamping of the copper rod, thus improving safety. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

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

[0027] Figure 3 This is a schematic diagram of the rear view structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the internal structure of the outer frame of the present invention;

[0029] Figure 5 This is a schematic diagram of the relevant structures on the carriage and support plate of the present invention;

[0030] Figure 6 This is a schematic diagram of the relevant structures on the carriage of the present invention;

[0031] Figure 7 This is a schematic diagram of a partial structure of the carriage of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure on the two side support plates and the copper rod of the present invention;

[0033] Figure 9 This is a schematic diagram of the relevant structures on the support plate of the present invention;

[0034] Figure 10 This is a schematic diagram of the relevant structures on the insulating cover and support plate of the present invention;

[0035] Figure 11 This is a schematic diagram of the relevant structures on the insulating cover of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[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 located 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 equipped with a clamping assembly for universally clamping copper rods 23 of different diameters. A sliding frame 30 is slidably mounted on the support base 9. A release assembly is mounted 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 close to each other, so as to place the copper rod 23 on the clamping plate 16. Telescopic members 33 are symmetrically mounted at both ends of the support base 9. The ends of the telescopic members 33 that are far apart from each other are connected to push seats 34 that cooperate with and abut against the sliding frame 30. Insulating covers 35 are rotatably connected to the upper and lower sides of the mounting plate 3. Gears 36 are connected to both ends of each insulating cover 35. Double-sided racks 39 are meshed between the upper and lower gears 36. A covering assembly is also provided inside the outer frame 1. The covering assembly is used to drive the double-sided racks 39 to slide after the push seats 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 close to each other and rotate, thus providing insulating cover protection for the copper rod 23.

[0042] A reinforcing horizontal plate 2 is connected to the front side of the outer frame 1. A mounting plate 3 is connected to the reinforcing horizontal plate 2 on the inner side of the outer frame 1. Guide rails 7 are installed on both inner walls of the outer frame 1. The two ends of the slide 8 are slidably set 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.

[0043] Among them, the wire connection terminal 5, the meter connection terminal 6, the clamp 16, the copper rod 23 and the wire are made of conductive metal, while the remaining structures connected to or related to the wire connection terminal 5, the meter connection terminal 6, the clamp 16 and the copper rod 23 are made of insulating materials, such as plastic, ceramic or other composite materials, to improve safety. At the same time, the guide rail 7 adopts existing electric screw guide rails, electric roller guide rails, etc., to realize the automated control of the carriage 8.

[0044] The reinforced horizontal plate 2 enhances the overall structural strength of the outer frame 1 and facilitates the installation of the mounting plate 3. Since both the wire connection terminal 5 and the meter connection terminal 6 are arranged in pairs on both sides of the outer frame 1, and the clamping plates 16 are also arranged on both sides, each wire connection terminal 5 and meter connection terminal 6 can be connected to its corresponding clamping plate 16 via embedded wires, thus enabling current conduction with the clamping plates 16. When the clamping plates 16 clamp the copper rod 23, a complete circuit is formed. Furthermore, external wires can be connected to the outside of the wire connection terminals 5 and meter connection terminals 6, connecting to the main circuit current through the external wires on both sides of the wire connection terminals 5, and connecting to the ammeter 4 through the meter connection terminals 6 on both sides. This allows for the measurement of the voltage across the copper rod 23 using the ammeter 4, and further measurement of the current using Ohm's law. This also facilitates connection to the main circuit current, offering greater 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] This configuration allows the upper and lower clamping seats 12 to move closer together after the lower clamping plate 16 supports the copper rod 23, thus bringing the upper and lower clamping plates 16 closer together and stably clamping the copper rod 23. The spring 13 allows the upper and lower clamping seats 12 to move away from each other without external force, while under external force, the upper and lower clamping seats 12 move closer together and clamp the copper rod 23 with the clamping plate 16. The clamping plate 16 can also drive the sleeve 17 to slide on the slide rod frame 18 through the connecting frame 15 and compress the spring 19 to achieve direct contact between the copper rod 23 and the clamping plate 16. At the same time, the clamping plate 16 can slide relative to the clamping seat 12, enabling the clamping of copper rods 23 with different diameters and resistance values, thus improving the versatility of clamping.

[0061] The left and right clamps 12 are connected to the arc plate 44 on the side away from each other. The inner walls of the upper and lower insulating covers 35 are connected to the arc seats 45 that cooperate and abut against the arc plate 44. When the upper and lower insulating covers 35 approach each other and rotate to close, the arc seats 45 abut against the arc plate 44, which drives the upper and lower clamps 12 to approach each other, so that the upper and lower clamps 16 clamp the copper rod 23 and form a circuit.

[0062] Example 5:

[0063] like Figures 1-11 As shown, this invention discloses a method for measuring high current, comprising the following steps:

[0064] Step 1: Control the retraction of the telescopic components 33 on both sides to 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, the copper rod 23 will be placed 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.

[0065] Step 2: Control the slide 8 to move the copper rod 23 clamped on the claw 22 to between the upper and lower clamping plates 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 clamping rods 21 move the claws 22 away from each other until the copper rod 23 is placed on the lower clamping plate 16.

[0066] 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, driving 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 closer to each other, and the copper rod 23 supported on the lower clamp 16 will be insulated, avoiding the risk of leakage when detecting high current.

[0067] Step 4: The rotation of the upper and lower insulating covers 35 towards each other will also push the upper and lower clamping plates 16 towards each other, so as to stably clamp 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 across the copper rod 23 and combining it with its resistance, the current can be accurately measured using Ohm's law.

[0068] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A large current measurement electric power fitting, comprising an outer frame (1), a mounting plate (3) connected to the front side of the outer frame (1), a sliding frame (8) slidingly arranged in the outer frame (1), and an ammeter (4) mounted on the back side of the outer frame (1), characterized in that, The mounting plate (3) is connected with the support plate (10) in the outer frame (1) at both ends, the clamping seat (12) is slidably arranged on the upper and lower sides of the support plate (10), the clamping piece (16) capable of elastic deformation is slidably arranged on the upper and lower clamping seats (12), the support seat (9) is connected with the sliding frame (8), the rotating shaft (20) is rotatably installed on the upper and lower sides of both ends of the support seat (9), the clamping rod (21) is connected with each rotating shaft (20), the clamping rod (21) corresponding to the upper and lower sides is connected with the clamping claw (22) matched with each other at the end away from the rotating shaft (20), and the copper bar (23) is clamped in the clamping claw (22) on the upper and lower sides, and the wire connection terminal (5) and the surface connection terminal (6) are respectively installed on the two sides of the outer frame (1), and both are connected with the clamping piece (16) through wires. The support plate (10) is provided with a clamping assembly for universal clamping of copper bars (23) of different diameters, the sliding frame (30) is slidably arranged on the support seat (9), the disengagement assembly is arranged on the sliding frame (30), the disengagement 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 towards each other, so that the copper bar (23) is placed on the clamping piece (16), the telescopic pieces (33) are symmetrically installed at both ends of the support seat (9), and the push seat (34) matched with the sliding frame (30) is connected at the end away from each other of the two telescopic pieces (33), the insulating cover (35) is rotatably connected on the upper and lower sides of the mounting plate (3), the gear (36) is connected at both ends of each insulating cover (35), and the double-sided rack (39) is engagedly connected between the gears (36) on the upper and lower sides, the cover assembly is further arranged in the outer frame (1), the cover assembly is used to drive the double-sided rack (39) to slide after the two push seats (34) move away from each other and separate from the sliding frame (30), so that the upper and lower insulating covers (35) rotate towards each other, and the copper bar (23) is protected by the insulating cover.

2. The high current measurement power fitting according to claim 1, characterized in that, The reinforcing cross plate (2) is connected to the front side of the outer frame (1), the mounting plate (3) is connected to the inner side of the cross plate (2) in the outer frame (1), the guide rails (7) are installed on the inner walls of the two sides of the outer frame (1), the sliding frames (8) are slidably arranged in the guide rails (7) on the two sides, the wire connection terminals (5) and the surface connection terminals (6) on the left and right sides are connected with 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), and the wire connection terminals (5) and the surface connection terminals (6) are further connected with the circuit and the ammeter (4) through wires.

3. The high current measurement power fitting according to claim 1, characterized in that, The separating assembly comprises a sliding groove frame (24), a sliding sheet (26) and a sliding column (27), the sliding groove frame (24) is connected to the side away from each other of the upper and lower clamping rods (21), the sliding sheet (26) is slidingly arranged at the left and right ends of the upper and lower sides of the support base (9) and is located at the side away from each other of the upper and lower clamping rods (21), the sliding column (27) is connected to the side close to the clamping rod (21) of the sliding sheet (26) and is slidingly arranged in the sliding groove frame (24), and the upper and lower ends of the sliding frame (30) are rotatably connected with the rotating plate one (31) between the upper and lower sides of the sliding sheet (26).

4. The high current measuring power fitting according to claim 3, wherein The upper and lower sides of the support base (9) are connected with the sliding rod holder three (25), the sliding sheet (26) is slidingly arranged outside the sliding rod holder three (25) on the respective side, the sliding sheet (26) and the support base (9) are connected with the spring three (28) arranged outside the sliding rod holder three (25), the two sides of the support base (9) are connected with the sliding rod holder four (29), the sliding frame (30) on the two sides is slidingly arranged outside the sliding rod holder four (29) on the respective side, and the sliding frame (30) and the support base (9) are connected with the spring four (32) arranged outside the sliding rod holder four (29).

5. The high current measurement power fitting according to claim 1, wherein, The cover assembly comprises a sliding rod holder five (40), a sliding plate (41) and a rotating plate two (42), the sliding rod holder five (40) is connected to the inner wall of the outer frame (1), the sliding plate (41) is slidingly arranged outside the sliding rod holder five (40), the sliding plate (41) and the double-sided rack (39) on the respective side are rotatably connected with the rotating plate two (42), the push base (34) is in abutment with the sliding plate (41), and the sliding plate (41) and the inner wall of the outer frame (1) are further connected with the spring five (43) arranged outside the sliding rod holder five (40).

6. A high current measuring power fitting according to claim 5, wherein, The inner wall of the outer frame (1) is connected with the guide rod holder (37), the outer side of the guide rod holder (37) is slidingly arranged with the sleeve frame (38), and the double-sided rack (39) is connected to the sleeve frame (38).

7. The high current measuring power fitting according to claim 1, wherein The clamping assembly comprises an opening (14), a connecting frame (15), a sleeve plate (17) and a sliding rod holder two (18), the opening (14) is formed through the clamping base (12), the connecting frame (15) is slidingly arranged in the opening (14), the clamping sheet (16) is connected to the upper and lower connecting frames (15) on the side close to each other of the upper and lower clamping bases (12), the sleeve plate (17) is connected to the upper and lower connecting frames (15) on the side away from each other of the upper and lower clamping bases (12), the sliding rod holder two (18) is connected to the side away from each other of the upper and lower clamping bases (12), the sleeve plate (17) is slidingly arranged outside the sliding rod holder two (18), and the sleeve plate (17) and the clamping base (12) are connected with the spring two (19) arranged outside the sliding rod holder two (18).

8. The high current measuring power fitting according to claim 7, wherein The upper and lower sides of the support plate (10) are connected with the sliding rod holder one (11), the clamping base (12) is slidingly arranged outside the sliding rod holder one (11), and the clamping base (12) and the support plate (10) are connected with the spring one (13) arranged outside the sliding rod holder one (11).

9. The high current measuring power fitting according to claim 8, wherein The arc plates (44) are connected to the left and right clamping seats (12) away from each other, and the arc seats (45) are connected to the inner walls of the upper and lower insulating covers (35) and abut against the arc plates (44).

10. A method for measuring large current, based on the large current measuring power fitting according to any one of claims 1-9, characterized in that, The method comprises the following steps: Step one: control the two sides of the telescopic piece (33) to shrink and drive the two sides of the push seat (34) to move close to each other, abut against the two sides of the sliding frame (30) to move close to each other, and through the disengaging assembly, drive the upper and lower clamping rods (21) to move away from each other, then place the copper bar (23) between the upper and lower clamping jaws (22), and then control the two sides of the telescopic piece (33) to extend again, so that the upper and lower clamping rods (21) drive the clamping jaws (22) to move close to each other to clamp the copper bar (23); Step two: control the sliding frame (8) to drive the copper bar (23) clamped on the clamping jaw (22) to move between the upper and lower clamping pieces (16) on the left and right ends, then control the telescopic piece (33) to extend again to drive the two sides of the push seat (34) to move away from each other, and make the two sides of the sliding frame (30) move away from each other, through the disengaging assembly, drive the upper and lower clamping rods (21) to drive the clamping jaws (22) to move away from each other, until the copper bar (23) is placed on the lower clamping piece (16); Step three: with the extension of the telescopic piece (33), the push seat (34) will cancel the contact with the sliding frame (30), cooperate with the cover assembly, drive the double-sided rack (39) to move away from each other, and then drive 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 bar (23) supported on the lower clamping piece (16) is insulated, avoiding the risk of electric leakage when detecting large current; Step four: the rotation of the upper and lower insulating covers (35) moving close to each other will also push the upper and lower clamping pieces (16) to move close to each other, to jointly clamp the copper bar (23) supported on the lower clamping piece (16), then connect the two sides of the line connection terminal (5) with the measuring circuit through the wire, and connect the two sides of the table connection terminal (6) with the ammeter (4) through the wire, so as to measure the voltage at both ends of the copper bar (23), and accurately measure the current by combining the resistance thereof and using Ohm's law.

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