Electricity meter with air pressure connection and disconnection device

Abstract

The application discloses a kind of electric energy meter with air pressure connection and disconnection device, it is related to electric energy meter technical field, including line body fixing mechanism, multiple groups of electric wire are fixedly installed in line body fixing mechanism, disconnection mechanism is also provided, line body fixing mechanism carries multiple groups of electric wire and is mutually inserted between disconnection mechanism, the side of box body is provided with air pressure control assembly, air pressure control assembly is connected with disconnection mechanism;Disconnection mechanism includes terminal block, the part of electric wire in terminal block is provided with conducting cylinder, the upper side of conducting cylinder is provided with compression part, connecting cylinder is arranged between compression part and terminal block, air pressure control assembly drives connecting cylinder to elongate when control compression part is compressed in conducting cylinder Electric wire;Through air pressure control assembly synchronous control the compression part in multiple groups of conducting cylinders carries out lifting action, to synchronously control the rapid disconnection operation of multiple groups of electric wire, guarantee the disconnection efficiency of electric wire and connection reliability.

Description

Technical Field

[0001] This invention relates to the field of electricity meter technology, specifically an electricity meter with a pneumatic connection / disconnection device. Background Technology

[0002] Pneumatic disconnect cables are a type of wiring that utilizes pneumatic pressure for connection and disconnection. During connection, a specific pneumatic device applies pressurized gas to the connection points. For example, some pneumatic disconnect cables have a sealed air chamber inside. When gas is introduced, the expansion of the chamber pushes the internal connecting components, causing the wire connectors to fit tightly together. This sealing can be achieved by pressing the metal parts of the connectors together to ensure a good electrical connection, similar to squeezing two metal joints by hand, but pneumatic pressure provides more even pressure. Disconnection is achieved by releasing the gas from the chamber, allowing the connecting components to return to their original state, thus easily separating the wires. This allows for quick wire disconnection without the need for traditional tools like screws or nuts.

[0003] Current electricity meter connections and disconnections primarily rely on tightening screws. However, prolonged use can lead to slippage of these screws, causing loose electrical contacts and potentially resulting in overheating and damage to the wiring. Therefore, for electricity meters requiring frequent connection and disconnection, it is necessary to develop a pneumatic connection / disconnection device suitable for such operating environments. This would improve connection / disconnection efficiency and enhance the reliability of the meter during use. Summary of the Invention

[0004] The purpose of this invention is to provide an energy meter with a pneumatic connection and disconnection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An energy meter with a pneumatic connection and disconnection device includes a housing. The bottom of the housing is provided with a wire fixing mechanism, in which multiple sets of wires are fixedly installed. A disconnection mechanism is provided at one end of the housing facing the wire fixing mechanism. The wire fixing mechanism carries multiple sets of wires and is connected to the disconnection mechanism. A pneumatic control component is provided on the side of the housing and is connected to the disconnection mechanism.

[0007] The disconnection mechanism includes a connector frame, and multiple sets of conductive cylinders are provided in the connector frame at the locations of multiple sets of wires in the wire fixing mechanism. A pressing part is provided on the upper side of the conductive cylinder, and a connecting cylinder is provided between the pressing part and the connector frame. When the air pressure control component drives the connecting cylinder to extend, it controls the pressing part to press the wires into the conductive cylinder.

[0008] As a further embodiment of the present invention: the wiring frame is provided with a lifting frame and a fixing plate. The lifting frame is slidably lifted and lowered on both sides of the wiring frame. The connecting cylinder is installed between the lifting frame and the fixing plate. The connecting cylinder is connected to the air pressure control component. The bottom of the lifting frame is connected to a pressure plate. The pressing part is inserted into the upper side of the conductive cylinder. The lifting frame is connected to the upper end of the pressing part in conjunction with the pressure plate.

[0009] As a further embodiment of the present invention: the air pressure control component includes airbag frames disposed on both sides of the box body, a mating piston disposed inside the airbag frame, a push-pull frame disposed on the top of the box body, a plug-in rod connected to the mating piston, the two ends of the push-pull frame being respectively connected to the plug-in rods on both sides, an air guide pipe disposed at the bottom of the airbag frame, a dispersion air pipe disposed on the connecting cylinder, the dispersion air pipe communicating with the air guide pipe, a locking spring post disposed on the top of the box body, and a mating hole disposed on the push-pull frame that mates with the locking spring post.

[0010] As a further embodiment of the present invention: the pressing part includes a plug-in post that is inserted into the conductive cylinder, the bottom of the plug-in post is provided with a U-shaped groove, the plug-in post is provided with a through lifting slide groove, the two ends of the lifting slide groove are slidably installed with matching slide posts, an elastic plate is provided between the matching slide posts, and a second support spring is provided between the top of the lifting slide groove and the elastic plate.

[0011] As a further embodiment of the present invention: the wire fixing mechanism includes a fixing frame one and a fixing frame two, the fixing frame one and the fixing frame two are connected by bolts, the wire passes through the fixing frame one and the fixing frame two and then connects with the terminal frame, the fixing frame one is provided with locking rods at both ends, the box body is provided with slots on both sides, and the fixing frame one and the fixing frame two are connected to the slots by locking rods after being combined.

[0012] As a further embodiment of the present invention: a tapered hole is provided on the first fixing frame corresponding to the part of the wire, and a tapered hole is provided on the second fixing frame corresponding to the part of the wire. A rubber spindle block is placed between the tapered hole and the tapered hole. A through hole is provided on the axial part of the spindle block, and the wire passes through the through hole and connects with the connector.

[0013] As a further embodiment of the present invention: the wire includes a sheathed section and an exposed section. The sheathed section passes through the second conical hole and then enters the first conical hole. The sheathed section and the exposed section are distributed on both sides of the first conical hole. The side of the fixing bracket facing the connector is provided with a support spring corresponding to the exposed section. The support spring is provided with an abutment ring. The connector and the wire insertion part are provided with a mating hole. The abutment ring and the mating hole are mated together.

[0014] As a further embodiment of the present invention: two sets of locking rods are respectively provided at both ends of the fixing frame, and locking holes are provided on the locking rods. A bidirectional cylinder is provided between the slots. The bidirectional cylinder is connected to the air pressure control component. When the locking rods and the slots are inserted into each other, the bidirectional cylinder and the locking holes are locked together.

[0015] As a further embodiment of the present invention: a locking pin is provided on the fixing frame, and a locking pin is provided on the wiring frame at the corresponding position of the locking pin, and the locking pin is elastically installed between the wiring frame and the wiring frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) Multiple sets of wires first enter the wire fixing mechanism and are fixed by it. The wire fixing mechanism carries multiple sets of wires into the disassembly and reassembly mechanism at the end of the box. The disassembly and reassembly mechanism and the pneumatic control component are combined to realize the disassembly and reassembly of the wires. After the wires are inserted into the conductive cylinder, the pneumatic control component drives the connecting cylinder to extend, causing the clamping part to press down, thereby pressing the wires into the conductive cylinder and realizing the electrical connection between the wires and the conductive cylinder. While the wire fixing mechanism fixes multiple sets of wires, the wires are simultaneously inserted into the conductive cylinder and simultaneously disassembled and reassembled, which effectively improves the efficiency of wire disassembly and reassembly and the reliability of the disassembly and reassembly process.

[0018] (2) When the pneumatic control component pumps air into the connecting cylinder, it causes the connecting cylinder to extend, which in turn causes the lifting frame to move downward. The lifting frame then causes the clamping parts to press down, so that the clamping parts in all the conductive cylinders act on the wire, thereby pressing the wire and the conductive cylinder together to ensure a reliable electrical connection. Conversely, when the pneumatic control component causes the connecting cylinder to shorten, the lifting frame rises, which simultaneously causes the clamping parts in all the conductive cylinders to rise, releasing the wire and thus simultaneously disconnecting the electrical connection between the wire and the conductive cylinder.

[0019] (3) The wire is installed by fixing frame one and fixing frame two. Rubber spindle blocks are set in combination with tapered hole one and tapered hole two. After the wire passes through fixing frame one, spindle block and fixing frame two, fixing frame one and fixing frame two are tightened by bolts to squeeze the spindle block, thereby realizing the snap-fit ​​and fixing of the wire by the spindle block, ensuring reliable connection between the wire and the wire fixing mechanism during the wire connection and disconnection process, and preventing the wire from falling off accidentally after connection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the box in this invention.

[0022] Figure 3This is a schematic diagram of the structure of the wire fixing mechanism in this invention.

[0023] Figure 4 This is a schematic diagram of the connection between the wire and the disconnection mechanism in this invention.

[0024] Figure 5 This is a schematic diagram of the air pressure control component in this invention.

[0025] Figure 6 This is a schematic diagram of the disassembly and assembly mechanism in this invention.

[0026] Figure 7 This is a schematic diagram of the connection structure between the clamping part and the conductive cylinder in this invention.

[0027] Figure 8 This is a cross-sectional structural diagram of the clamping part in this invention.

[0028] In the diagram: 1. Box body; 10. Slot; 2. Line fixing mechanism; 20. Fixing bracket one; 200. Locking pin; 21. Locking rod; 210. Locking hole; 22. Fixing bracket two; 23. Support spring one; 24. Abutment ring; 25. Conical hole one; 26. Conical hole two; 27. Spindle block; 3. Disassembly and assembly mechanism; 30. Connecting bracket; 300. Locking pin; 31. Connecting hole; 32. Lifting frame; 33. Fixing plate; 34. Connecting cylinder; 35. Dispersion 36. Air tube; 37. Conductive cylinder; 38. Pressure plate; 39. Pressing part; 30. Insertion post; 31. Lifting slide; 32. Matching slide; 33. Elastic plate; 34. Support spring II; 35. U-shaped groove; 4. Air pressure control assembly; 40. Airbag frame; 41. Push-pull frame; 42. Insertion rod; 43. Matching piston; 44. Air tube; 45. Two-way cylinder; 46. Locking spring post; 5. Wire; 50. Covered section; 51. Exposed section. Detailed Implementation

[0029] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0030] like Figure 1 , Figure 2 As shown, an energy meter with a pneumatic connection and disconnection device includes a housing 1. The bottom of the housing 1 is provided with a wire fixing mechanism 2, in which multiple sets of wires 5 are fixedly installed. A disconnection mechanism 3 is provided at one end of the housing 1 facing the wire fixing mechanism 2. The wire fixing mechanism 2 carries multiple sets of wires 5 and is connected to the disconnection mechanism 3. A pneumatic control component 4 is provided on the side of the housing 1, and the pneumatic control component 4 is connected to the disconnection mechanism 3.

[0031] like Figures 5-7As shown, the disconnection mechanism 3 includes a connector frame 30. Multiple sets of conductive cylinders 36 are provided inside the connector frame 30 at the locations of multiple sets of wires 5 in the wire fixing mechanism 2. A pressing part 38 is provided on the upper side of the conductive cylinder 36. A connecting cylinder 34 is provided between the pressing part 38 and the connector frame 30. When the air pressure control component 4 drives the connecting cylinder 34 to extend, it controls the pressing part 38 to press the wires 5 into the conductive cylinder 36.

[0032] Specifically, multiple sets of wires 5 first enter the wire fixing mechanism 2 and are fixed thereon. The wire fixing mechanism 2 then carries the multiple sets of wires 5 into the disconnection mechanism 3 at the end of the box 1. The disconnection mechanism 3, together with the pneumatic control component 4, enables the disconnection and connection of the wires 5. After the wires 5 are inserted into the conductive cylinder 36, the pneumatic control component 4 drives the connecting cylinder 34 to extend, causing the pressing part 38 to press down, thereby pressing the wires 5 tightly into the conductive cylinder 36, achieving an electrical connection between the wires 5 and the conductive cylinder 36. While the wire fixing mechanism 2 fixes the multiple sets of wires 5, the wires 5 are simultaneously inserted into the conductive cylinder 36 and simultaneously disconnected and connected, effectively improving the efficiency and reliability of the wire disconnection and connection process.

[0033] Furthermore, such as Figure 6 , Figure 7 As shown, the wiring frame 30 is provided with a lifting frame 32 and a fixing plate 33. The lifting frame 32 is slidably lifted and lowered on both sides of the wiring frame 30. The connecting cylinder 34 is installed between the lifting frame 32 and the fixing plate 33. The connecting cylinder 34 is connected to the air pressure control component 4. The bottom of the lifting frame 32 is connected to a pressure plate 37. The pressing part 38 is inserted into the upper side of the conductive cylinder 36. The lifting frame 32 is connected to the upper end of the pressure plate 37 and the pressing part 38.

[0034] Specifically, when the pneumatic control component 4 pumps air into the connecting cylinder 34, it causes the connecting cylinder 34 to extend, resulting in the lifting frame 32 moving downwards. The lifting frame 32 then causes the clamping parts 38 to press down, so that the clamping parts 38 in all the conductive cylinders 36 act on the wire 5, thereby pressing the wire 5 tightly against the conductive cylinder 36 and ensuring a reliable electrical connection. Conversely, when the pneumatic control component 4 causes the connecting cylinder 34 to shorten, the lifting frame 32 rises, simultaneously causing the clamping parts 38 in all the conductive cylinders 36 to rise, releasing the wire 5 and thus simultaneously disconnecting the electrical connection between the wire 5 and the conductive cylinder 36.

[0035] Furthermore, such as Figure 2 , Figure 5As shown, the air pressure control assembly 4 includes airbag frames 40 disposed on both sides of the housing 1, with a mating piston 43 disposed inside the airbag frame 40. A push-pull frame 41 is disposed on the top of the housing 1. The mating piston 43 is connected to a plug rod 42. The two ends of the push-pull frame 41 are respectively connected to the plug rods 42 on both sides. An air guide pipe 44 is disposed at the bottom of the airbag frame 40. A dispersion air pipe 35 is disposed on the connecting cylinder 34. The dispersion air pipe 35 is connected to the air guide pipe 44. A locking spring post 46 is disposed on the top of the housing 1. A mating hole is disposed on the push-pull frame 41 that mates with the locking spring post 46.

[0036] Furthermore, such as Figure 8 As shown, the clamping part 38 includes a plug-in post 380 that is inserted into the conductive cylinder 36. The bottom of the plug-in post 380 is provided with a U-shaped groove 385. A through lifting slide groove 381 is provided inside the plug-in post 380. Matching slide posts 382 are slidably installed at both ends of the lifting slide groove 381. An elastic plate 383 is provided between the matching slide posts 382. A second support spring 384 is provided between the top of the lifting slide groove 381 and the elastic plate 383.

[0037] Specifically, when the plug-in post 380 moves down, the elastic plate 383 moves down along with the plug-in post 380. When the elastic plate 383 comes into contact with the end of the wire 5, in order to accommodate the installation of wires 5 of different diameters, the elastic plate 383 is installed in conjunction with the sliding post 382 and the second support spring 384. This ensures that the plug-in post 380 moves down reliably while also ensuring that the elastic plate 383 is reliably pressed onto the wire 5, thereby ensuring a reliable electrical connection between the wire 5 and the conductive cylinder 36.

[0038] Furthermore, such as Figure 3 , Figure 4 As shown, the wire fixing mechanism 2 includes a first fixing frame 20 and a second fixing frame 22. The first fixing frame 20 and the second fixing frame 22 are connected by bolts. The wire 5 passes through the first fixing frame 20 and the second fixing frame 22 and then connects with the terminal frame 30. The two ends of the first fixing frame 20 are respectively provided with locking rods 21. The two sides of the box body 1 are provided with slots 10. The first fixing frame 20 and the second fixing frame 22 are connected to the slots 10 through the locking rods 21.

[0039] Furthermore, such as Figure 2 , Figure 4 As shown, a tapered hole 25 is provided on the fixing bracket 20 corresponding to the position of the wire 5, and a tapered hole 26 is provided on the fixing bracket 22 corresponding to the position of the wire 5. A rubber spindle block 27 is placed between the tapered hole 25 and the tapered hole 26. A through hole is provided on the axial part of the spindle block 27, and the wire 5 passes through the through hole and connects with the connector 30.

[0040] Specifically, the wire 5 is installed through the first fixing bracket 20 and the second fixing bracket 22. Rubber spindle blocks 27 are set in conjunction with the first tapered hole 25 and the second tapered hole 26. After the wire 5 passes through the first fixing bracket 20, the spindle block 27 and the second fixing bracket 22, the first fixing bracket 20 and the second fixing bracket 22 are tightened with bolts to squeeze the spindle block 27, thereby realizing the snap-fit ​​fixation of the wire 5 by the spindle block 27. This ensures a reliable connection between the wire 5 and the wire fixing mechanism 2 during the connection and disconnection of the wire 5, and at the same time prevents the wire 5 from accidentally falling off after connection.

[0041] Furthermore, such as Figures 2-5 As shown, the wire 5 includes a sheathed section 50 and an exposed section 51. The sheathed section 50 passes through the second conical hole 26 and enters the first conical hole 25. The sheathed section 50 and the exposed section 51 are distributed on both sides of the first conical hole 25. The fixing bracket 20 facing the terminal block 30 is provided with a support spring 23 corresponding to the exposed section 51. The support spring 23 is provided with an abutment ring 24. The terminal block 30 and the wire 5 are provided with a mating hole 31. The abutment ring 24 and the mating hole 31 are mated together.

[0042] Specifically, the length of the wire 5 passing through the fixing bracket 20 is kept consistent, thus ensuring that the length of the exposed section 51 of the wire 5 inserted into the conductive cylinder 36 is equal after the wire fixing mechanism 2 and the disassembly mechanism 3 are connected. First, the exposed section 51 of the wire 5 is set to the same length. When the sheathed section 50 passes through the tapered hole 25, it is stuck in the tapered hole 25. At this time, the bolts between the fixing bracket 20 and the fixing bracket 22 are tightened. The locking rod 21 in the wire fixing mechanism 2 is connected to the slot 10, so that the exposed section 51 of the wire 5 is inserted into the docking hole 31. Then, the air pressure control component 4 drives the pressing part 38 to act on the exposed section 51 in the conductive cylinder 36, thereby realizing the electrical connection.

[0043] Furthermore, such as Figure 3 , Figure 5 As shown, the locking rods 21 at both ends of the fixed frame 20 are provided with two sets respectively. The locking rods 21 are provided with locking holes 210. A bidirectional cylinder 45 is provided between the slots 10. The bidirectional cylinder 45 is connected to the air pressure control component 4. When the locking rods 21 and the slots 10 are inserted into each other, the bidirectional cylinder 45 and the locking holes 210 are locked together.

[0044] Furthermore, such as Figure 3 , Figure 6 As shown, the fixed frame 20 is provided with a locking pin 200, and the terminal frame 30 is provided with a locking pin 300 at the corresponding position of the locking pin 200. The locking pin 300 and the terminal frame 30 are elastically installed in a lifting manner.

[0045] Specifically, the bidirectional cylinder 45 locks the cable fixing mechanism 2 to the housing 1. Before locking, the cable fixing mechanism 2 is initially engaged with the locking pin 200 and locking pin 300 to prevent it from popping out under the action of the support spring 23. While locking the locking rod 21, the bidirectional cylinder 45 controls the pressing part 38 to press down, electrically connecting the wire 5. When the pneumatic control component 4 controls the pressing part 38 to release, the bidirectional cylinder 45 simultaneously releases the locking rod 21, thereby achieving quick assembly and disassembly between the cable fixing mechanism 2 and the housing 1.

[0046] The working principle of this invention embodiment is as follows:

[0047] like Figures 1-8 As shown, firstly, the exposed sections 51 at the ends of multiple sets of wires 5 are set to the same length, and then passed through the second fixing frame 22, the spindle block 27, and the first fixing frame 20 in sequence. The bolts between the first fixing frame 20 and the second fixing frame 22 are then tightened. The wire fixing mechanism 2 is then inserted into the box 1 along the slot 10. The wire fixing mechanism 2 achieves initial clamping and positioning through the locking pin 200 and the locking pin 300. Then, the pneumatic control component 4 is activated, and the push-pull frame 41 is manually pressed down, pumping air into the multiple sets of connecting cylinders 34. When the push-pull frame 41 is pressed down to its lowest position, the locking spring post 46 at the top of the box 1 engages with the mating hole between the push-pull frame 41, thereby locking the position of the push-pull frame 41 and ensuring the extension length of the connecting cylinder 34. This allows the pressing part 38 to act on the exposed section 51 of the wire 5 inside the conductive cylinder 36, achieving a reliable clamping connection. At the same time, the bidirectional cylinder 45 extends to lock the locking rod 21 and the slot 10, preventing the wire fixing mechanism 2 from separating from the box 1 and ensuring a reliable connection between the wire 5, the wire fixing mechanism 2, and the box 1.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An energy meter with a pneumatic connection / disconnection device, comprising a housing (1), characterized in that, The bottom of the box (1) is provided with a wire fixing mechanism (2), and multiple sets of wires (5) are fixedly installed in the wire fixing mechanism (2). The end of the box (1) facing the wire fixing mechanism (2) is provided with a disconnection mechanism (3). The wire fixing mechanism (2) carries multiple sets of wires (5) and is connected to the disconnection mechanism (3). The side of the box (1) is provided with a pneumatic control component (4), and the pneumatic control component (4) is connected to the disconnection mechanism (3). The disconnection mechanism (3) includes a connector frame (30). Multiple conductive cylinders (36) are provided in the connector frame (30) at the locations of multiple sets of wires (5) in the wire fixing mechanism (2). A pressing part (38) is provided on the upper side of the conductive cylinder (36). A connecting cylinder (34) is provided between the pressing part (38) and the connector frame (30). When the air pressure control component (4) drives the connecting cylinder (34) to extend, it controls the pressing part (38) to press the wires (5) into the conductive cylinder (36). The air pressure control assembly (4) includes airbag frames (40) arranged on both sides of the box body (1), a mating piston (43) is provided inside the airbag frame (40), a push-pull frame (41) is provided on the top of the box body (1), the mating piston (43) is connected to a plug rod (42), the two ends of the push-pull frame (41) are respectively connected to the plug rods (42) on both sides, an air guide pipe (44) is provided at the bottom of the airbag frame (40), a dispersion air pipe (35) is provided on the connecting cylinder (34), the dispersion air pipe (35) is connected to the air guide pipe (44), a locking spring post (46) is provided on the top of the box body (1), and a mating hole is provided on the push-pull frame (41) that is mutually connected with the locking spring post (46).

2. An energy meter with a pneumatic connection / disconnection device according to claim 1, characterized in that, The wiring frame (30) is provided with a lifting frame (32) and a fixing plate (33). The lifting frame (32) is slidably lifted and lowered on both sides of the wiring frame (30). The connecting cylinder (34) is installed between the lifting frame (32) and the fixing plate (33). The connecting cylinder (34) is connected to the air pressure control component (4). The bottom of the lifting frame (32) is connected to a pressure plate (37). The pressing part (38) is inserted into the upper side of the conductive cylinder (36). The lifting frame (32) is connected to the upper end of the pressing part (38) in conjunction with the pressure plate (37).

3. An energy meter with a pneumatic connection / disconnection device according to claim 1, characterized in that, The pressing part (38) includes a plug-in post (380) that is inserted into the conductive cylinder (36). The bottom of the plug-in post (380) is provided with a U-shaped groove (385). A through lifting slide groove (381) is provided inside the plug-in post (380). Matching slide posts (382) are slidably installed at both ends of the lifting slide groove (381). An elastic plate (383) is provided between the matching slide posts (382). A second support spring (384) is provided between the top of the lifting slide groove (381) and the elastic plate (383).

4. An energy meter with a pneumatic connection / disconnection device according to claim 1, characterized in that, The wire fixing mechanism (2) includes a first fixing frame (20) and a second fixing frame (22). The first fixing frame (20) and the second fixing frame (22) are connected by bolts. The wire (5) passes through the first fixing frame (20) and the second fixing frame (22) and then connects with the terminal frame (30). The first fixing frame (20) is provided with locking rods (21) at both ends. The box body (1) is provided with slots (10) on both sides. The first fixing frame (20) and the second fixing frame (22) are connected to the slots (10) through the locking rods (21) after being combined.

5. An energy meter with a pneumatic connection / disconnection device according to claim 4, characterized in that, A tapered hole 1 (25) is provided on the first fixing frame (20) corresponding to the part of the wire (5), and a tapered hole 2 (26) is provided on the second fixing frame (22) corresponding to the part of the wire (5). A rubber spindle block (27) is placed between the tapered hole 1 (25) and the tapered hole 2 (26). A through hole is provided on the axis of the spindle block (27), and the wire (5) passes through the through hole and connects with the connector (30).

6. An energy meter with a pneumatic connection / disconnection device according to claim 5, characterized in that, The wire (5) includes a sheath section (50) and an exposed section (51). The sheath section (50) passes through the second conical hole (26) and enters the first conical hole (25). The sheath section (50) and the exposed section (51) are distributed on both sides of the first conical hole (25). The first fixing bracket (20) facing the terminal frame (30) is provided with a first supporting spring (23) corresponding to the exposed section (51). The first supporting spring (23) is provided with an abutment ring (24). The terminal frame (30) and the wire (5) are provided with a docking hole (31). The abutment ring (24) and the docking hole (31) are connected to each other.

7. An energy meter with a pneumatic connection / disconnection device according to claim 4, characterized in that, The locking rods (21) at both ends of the fixing frame (20) are provided with two sets respectively. The locking rods (21) are provided with locking holes (210). A two-way cylinder (45) is provided between the slots (10). The two-way cylinder (45) is connected to the air pressure control component (4). When the locking rods (21) and the slots (10) are inserted into each other, the two-way cylinder (45) and the locking hole (210) are locked together.

8. An energy meter with a pneumatic connection / disconnection device according to claim 4, characterized in that, The fixing frame (20) is provided with a locking pin (200), and the wiring frame (30) is provided with a locking pin (300) at the corresponding position of the locking pin (200). The locking pin (300) and the wiring frame (30) are elastically installed in a lifting manner.

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