A smart metering box with built-in power quality monitoring

Abstract

The application relates to the technical field of electric energy metering boxes, in particular to an intelligent metering box with built-in electric energy quality monitoring, which comprises a metering box shell, a branch switch fixedly installed on one side of the inside of the metering box shell at equal intervals, a total switch fixedly installed on the side end of the metering box shell close to the branch switch, wherein the total switch is located above the branch switch, an inner partition plate fixedly installed on the other side of the inside of the metering box shell, contact mechanisms fixedly installed on the side end of the metering box shell close to the inner partition plate in a symmetrical mode, wherein the contact mechanisms are located above the inner partition plate, a protection cavity fixedly installed on the side end of the contact mechanisms away from the total switch, the contact mechanisms comprising positioning components, a back plate and metering tables, the metering tables being fixedly installed on the front end of the back plate at equal intervals, the positioning components being slidingly installed on the bottom of the front end of the back plate at equal intervals, and the positioning components comprising displacement devices and positioning devices. Through the arrangement of the contact mechanisms, the purpose of accurate measurement and round-robin detection of the electric energy metering box during operation is achieved.

Description

Technical Field

[0001] This invention relates to the field of electricity metering box technology, specifically to an intelligent metering box with built-in power quality monitoring. Background Technology

[0002] An electricity metering box is a specialized electrical device used for electricity metering. Simply put, it is a closed box that integrates core metering components such as electricity meters and instrument transformers. It is used to accurately record and count the electricity consumption of users or lines. It is widely used in various electricity consumption scenarios, from low-voltage residential users to high-voltage power supply lines of 10kV and below. By integrating switching equipment, measuring instruments, and protective electrical appliances into a metal or non-metal box, it achieves safe and accurate collection and monitoring of electricity data.

[0003] Currently, existing electricity metering boxes typically only measure the internal temperature of the metering box, thus only detecting the approximate operating temperature inside. Furthermore, the metering boxes lack components for detecting localized areas, preventing them from performing accurate measurements and routine inspections during operation. Therefore, an improved device is needed to address these issues. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides an intelligent metering box with built-in power quality monitoring.

[0005] The technical solution adopted by this invention to solve its technical problem is: an intelligent metering box with built-in power quality monitoring, including a metering box shell, a circuit breaker fixedly installed at equal intervals on one side of the inner side of the metering box shell, a main circuit breaker fixedly installed on the side of the metering box shell near the circuit breaker, and the main circuit breaker located above the circuit breaker, an inner partition fixedly installed on the other side of the inner side of the metering box shell, a contact mechanism symmetrically fixedly installed on the side of the metering box shell near the inner partition, and the contact mechanism located above the inner partition, a protective cavity fixedly installed on the side of the contact mechanism away from the main circuit breaker, the contact mechanism including a positioning component, a back plate and a meter, the meter fixedly installed at equal intervals at the front end of the back plate, and the positioning component slidably installed at equal intervals at the bottom of the front end of the back plate.

[0006] Specifically, the positioning component includes a displacement device and a positioning device, wherein the displacement device is symmetrically slidably inserted into the top end of the positioning device.

[0007] Specifically, the displacement device includes a contact cylinder, a return spring, a sleeve hole, a displacement arm, a connecting crossbar, a contact block, an extension bracket, a heat-conducting copper sheet, a heat-conducting copper tube, and a copper sheet. The heat-conducting copper tube is symmetrically fixedly installed at the rear end of the heat-conducting copper sheet, and the copper sheet is fixedly installed at the bottom rear end of the heat-conducting copper tube. The displacement arm is symmetrically fixedly installed at the bottom end of the heat-conducting copper sheet. The sleeve hole is opened inside the displacement arm. The return spring is fixedly installed at the bottom front end of the displacement arm. The connecting crossbar is fixedly installed at the bottom front end of the displacement arm. The contact block is fixedly installed at the front end of the connecting crossbar. The extension bracket is fixedly installed at the side end of the connecting crossbar, and the contact cylinder is fixedly installed at the top of the side end of the extension bracket opposite to the connecting crossbar.

[0008] Specifically, the positioning device includes a synchronizing rod, a displacement vertical plate, a first piston rod, an L-shaped air cylinder, a second piston rod, a guide vertical rod, an extension guide rod, and a supporting cavity. The extension guide rod is symmetrically and fixedly installed inside the supporting cavity. The guide vertical rod is fixedly installed at both ends inside the supporting cavity. The displacement vertical plate is slidably sleeved on the outer ring of the guide vertical rod. The synchronizing rod is fixedly installed between the two displacement vertical plates. The L-shaped air cylinder is symmetrically and fixedly installed at both ends inside the supporting cavity, and the L-shaped air cylinder is located at the front and rear ends of the guide vertical rod. The second piston rod is slidably inserted into the front end of the L-shaped air cylinder, and the first piston rod is slidably inserted into the side end of the L-shaped air cylinder.

[0009] Specifically, an extension cavity is fixedly installed at the bottom end of the back panel, an extension rod is rotatably installed on the inner side of the extension cavity, a lead screw is fixedly installed on the side end of the extension rod, a displacement wing plate is threaded onto the outer ring of the lead screw, a temperature probe is fixedly installed at the front end of the displacement wing plate, and guide side plates are fixedly installed at equal intervals at the front end of the extension cavity.

[0010] Specifically, a first sprocket is rotatably mounted at the top of the inner cavity of the protective cavity, and a second sprocket is rotatably mounted at the bottom of the inner cavity of the protective cavity. A transmission chain is meshed on the outer rings of the first sprocket and the second sprocket.

[0011] Specifically, the sleeve is slidably fitted onto the outer ring of the extension guide rod, the end of the return spring away from the displacement arm is connected to the side end of the support cavity near the second piston rod, the support cavity is slidably fitted between the two guide side plates, the back plate is fixedly installed inside the rear end of the metering box shell, and the first sprocket and the second sprocket are respectively connected to the extension rod.

[0012] Specifically, the copper sheet has a groove at its rear end, the contact block is connected to the second piston rod at the side end near the extension bracket, the top of the support cavity has symmetrical guide grooves, the top of the guide rod is fixedly fitted with an anti-detachment plate, the L-shaped air cylinder is hollow inside, and a sealed cavity is formed between the first piston rod, the L-shaped air cylinder and the second piston rod, the bottom ends of both sides of the displacement vertical plate are inclined at 45°, the top two ends of the support cavity have through holes adapted to the displacement vertical plate, and the reset spring is located on the outer ring of the extension guide rod.

[0013] Specifically, the guide side plate has symmetrical slots inside, the front end of the extension cavity has a movable groove inside, and the top and bottom of the displacement wing plate are fitted with the top and bottom of the movable groove inside. The side end of the guide side plate and both ends of the support cavity have round holes. The displacement vertical plate is vertically aligned with the contact cylinder. The two ends of the support cavity are fixedly installed with keying. The copper sheet is horizontally aligned with the temperature probe.

[0014] The beneficial effects of this invention are:

[0015] First, this invention, through the reset spring driving the displacement arm to reset, can drive the heat-conducting copper sheet to contact the electrode plate, enabling the heat generated by the electrode plate during operation to be conducted in real time. Simultaneously, the extension guide rod supports the heat-conducting copper sheet to move linearly. Furthermore, when the synchronous rod moves downwards, it drives the displacement vertical plate to push the two contact cylinders to the side, allowing the heat-conducting copper sheet to disengage from the electrode plate, thus facilitating its removal. When the second piston rod is displaced, it enters the interior of the L-shaped air cylinder, allowing the first piston rod to reciprocate within the cylinder. This allows the first piston rod to be pulled out or inserted from the guide side plate, unlocking or re-locking the support cavity. The locking keys at both ends of the support cavity slide in the slots inside the guide side plate, enabling the support cavity to move linearly up and down, facilitating contact between the heat-conducting copper sheet and the electrode plate, and completing the precise measurement of the electrode plate.

[0016] Second, this invention allows the extension rod to rotate, which in turn drives the lead screw to rotate. This rotation of the lead screw causes the displacement wing plate to move back and forth along the interior of the extension cavity. Simultaneously, as the displacement wing plate moves, it causes the temperature probe to sequentially contact the copper sheets in different areas, allowing the real-time temperature of the heat-conducting copper sheets to be sensed. Furthermore, the rotation of the first sprocket drives the rotation of the second sprocket via a transmission chain, enabling the upper and lower extension rods to rotate synchronously. This allows multiple lead screws to rotate simultaneously, enabling the temperature probes to perform cyclical monitoring. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a side view three-dimensional structural diagram of the main body in this invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the main body from a frontal perspective in this invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the contact mechanism in this invention from a frontal perspective;

[0021] Figure 4 This is a three-dimensional structural diagram of the positioning component from a frontal view in this invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the displacement device from the front view in this invention;

[0023] Figure 6 This is a partial cross-sectional schematic diagram of the positioning device in this invention;

[0024] Figure 7 This is a three-dimensional structural diagram of the extended cavity from the front view in this invention;

[0025] Figure 8 This is a three-dimensional structural diagram of the protective cavity from the front view in this invention.

[0026] In the diagram: 1-Contact mechanism, 2-Protective cavity, 3-Inner partition, 4-Metering box outer shell, 5-Branch switch, 6-Main switch, 7-Positioning component, 8-Back plate, 9-Metering gauge, 10-Displacement device, 11-Positioning device, 12-Contact cylinder, 13-Reset spring, 14-Sleeve hole, 15-Displacement support arm, 16-Connecting crossbar, 17-Contact block, 18-Extension bracket, 19-Heat-conducting copper sheet, 20-Heat-conducting copper pipe, 2 1-Copper sheet, 22-Synchronizing rod, 23-Displacement vertical plate, 24-First piston rod, 25-L-shaped air cylinder, 26-Second piston rod, 27-Guide vertical rod, 28-Extension guide rod, 29-Support cavity, 30-Displacement wing plate, 31-Extension cavity, 32-Extension rod, 33-Temperature probe, 34-Guide side plate, 35-Screw, 36-Electrode sheet, 37-First sprocket, 38-Transmission chain, 39-Second sprocket. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] The invention will be further described below with reference to the accompanying drawings.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, an intelligent metering box with built-in power quality monitoring according to the present invention includes a metering box shell 4. A branch switch 5 is fixedly installed at equal intervals on one side of the inner side of the metering box shell 4. A main switch 6 is fixedly installed on the side end of the metering box shell 4 near the branch switch 5, and the main switch 6 is located above the branch switch 5. An inner partition 3 is fixedly installed on the other side of the inner side of the metering box shell 4. A contact mechanism 1 is symmetrically fixedly installed on the side end of the metering box shell 4 near the inner partition 3, and the contact mechanism 1 is located above the inner partition 3. A protective cavity 2 is fixedly installed on the side end of the contact mechanism 1 away from the main switch 6. The contact mechanism 1 includes a positioning component 7, a back plate 8 and a meter 9. The meter 9 is fixedly installed at equal intervals on the front end of the back plate 8, and the positioning component 7 is slidably installed at equal intervals on the bottom front end of the back plate 8.

[0030] like Figure 4 The positioning component 7 includes a displacement device 10 and a positioning device 11. The displacement device 10 is symmetrically slidably inserted into the top of the positioning device 11, which can support the stable operation of the displacement device 10.

[0031] like Figure 5 The displacement device 10 includes a contact cylinder 12, a return spring 13, a sleeve hole 14, a displacement arm 15, a connecting crossbar 16, a contact block 17, an extension bracket 18, a heat-conducting copper sheet 19, a heat-conducting copper tube 20, and a copper sheet 21. The heat-conducting copper tube 20 is symmetrically fixedly installed at the rear end of the heat-conducting copper sheet 19, and the copper sheet 21 is fixedly installed at the bottom rear end of the heat-conducting copper tube 20. The displacement arm 15 is symmetrically fixedly installed at the bottom end of the heat-conducting copper sheet 19. The sleeve hole 14 is opened inside the displacement arm 15. The return spring 13 is fixedly installed at the bottom front end of the displacement arm 15. The connecting crossbar 16 is fixedly installed at the bottom front end of the displacement arm 15. The contact block 17 is fixedly installed at the front end of the connecting crossbar 16. The extension bracket 18 is fixedly installed at the side end of the connecting crossbar 16. The contact cylinder 12 is fixedly installed at the top side end of the extension bracket 18 away from the connecting crossbar 16. With the setting of the return spring 13, the displacement arm 15 can be driven to return to its original position in time.

[0032] like Figure 6The positioning device 11 includes a synchronizing rod 22, a displacement vertical plate 23, a first piston rod 24, an L-shaped air cylinder 25, a second piston rod 26, a guide vertical rod 27, an extension guide rod 28, and a support cavity 29. The extension guide rod 28 is symmetrically fixedly installed inside the support cavity 29. The guide vertical rod 27 is fixedly installed at both ends inside the support cavity 29. The displacement vertical plate 23 is slidably sleeved on the outer ring of the guide vertical rod 27. The synchronizing rod 22 is fixedly installed between the two displacement vertical plates 23. The L-shaped air cylinder 25 is symmetrically fixedly installed at both ends inside the support cavity 29, and the L-shaped air cylinder 25 is located at the front and rear ends of the guide vertical rod 27. The second piston rod 26 is slidably inserted into the front end of the L-shaped air cylinder 25. The first piston rod 24 is slidably inserted into the side end of the L-shaped air cylinder 25. An anti-detachment plate is installed at the top of the guide vertical rod 27 to prevent the displacement vertical plate 23 from detaching upwards.

[0033] like Figure 7 An extension cavity 31 is fixedly installed at the bottom of the back panel 8. An extension rod 32 is rotatably installed on the inner side of the extension cavity 31. A lead screw 35 is fixedly installed on the side of the extension rod 32. A displacement wing plate 30 is threaded onto the outer ring of the lead screw 35. A temperature probe 33 is fixedly installed at the front end of the displacement wing plate 30. Guide side plates 34 are fixedly installed at equal intervals at the front end of the extension cavity 31. The extension cavity 31 allows the displacement wing plate 30 to slide inside the extension cavity 31.

[0034] like Figure 8 The first sprocket 37 is rotatably mounted at the top of the inner cavity 2, and the second sprocket 39 is rotatably mounted at the bottom of the inner cavity 2. A transmission chain 38 is meshed on the outer ring of the first sprocket 37 and the second sprocket 39. The first sprocket 37, the transmission chain 38 and the second sprocket 39 can be protected by the protective cavity 2.

[0035] The sleeve 14 is slidably fitted onto the outer ring of the extension guide rod 28. The end of the return spring 13 away from the displacement support arm 15 is connected to the side end of the support cavity 29 near the second piston rod 26. The support cavity 29 is slidably fitted between the two guide side plates 34. The back plate 8 is fixedly installed inside the rear end of the metering box shell 4. The first sprocket 37 and the second sprocket 39 are respectively connected to the extension rod 32. The rear end of the copper sheet 21 has a groove. The side end of the contact block 17 near the extension bracket 18 is connected to the second piston rod 26. The top of the support cavity 29 has symmetrically opened guide grooves. The top of the guide vertical rod 27 is fixedly installed with an anti-detachment plate. The interior of the L-shaped air cylinder 25 is hollow. The first piston rod 24 and the L-shaped air cylinder 25 are hollow. A sealed cavity is formed between the air cylinder 25 and the second piston rod 26. The bottom ends of both sides of the displacement vertical plate 23 are inclined at 45°. The top two ends of the support cavity 29 are provided with through holes that are compatible with the displacement vertical plate 23. The return spring 13 is located on the outer ring of the extension guide rod 28. The guide side plate 34 is symmetrically provided with slots inside. The front end of the extension cavity 31 is provided with a movable groove. The top and bottom ends of the displacement wing plate 30 are in contact with the top and bottom ends of the movable groove inside. The side ends of the guide side plate 34 and the two ends inside the support cavity 29 are provided with round holes. The displacement vertical plate 23 is vertically aligned with the contact cylinder 12. The two ends of the support cavity 29 are fixedly installed with key. The copper sheet 21 is horizontally aligned with the temperature probe 33.

[0036] The working principle is as follows: In use, first install the meter 9 onto the back plate 8, then install the protective cavity 2 onto the side of the back plate 8. Subsequently, the back plate 8 and the protective cavity 2 can be installed inside the metering box housing 4 until the first sprocket 37 and the second sprocket 39 are connected to the two extension rods 32. At this point, mounting holes are provided on both sides of the guide side plate 34. The user can install the guide side plate 34 onto the front end of the extension cavity 31 using bolts passing through the mounting holes. Then, the synchronizing rod 22 can be pressed down, causing the displacement vertical plate 23 to move downwards. Because the bottom ends of the displacement vertical plate 23 are inclined at 45°, when the displacement vertical plate 23 moves downwards, it pushes the two contact cylinders 12 to the side. When the contact cylinders 12 are displaced... The displacement arm 15 can be moved simultaneously by the connecting crossbar 16, which in turn moves the heat-conducting copper sheet 19, allowing the two heat-conducting copper sheets 19 to move away from each other. Then, the support cavity 29 can be moved upwards, displacing itself in the slots inside the guide side plate 34 via the latches at both ends of the support cavity 29, allowing the support cavity 29 to move upwards in a straight line until the two heat-conducting copper sheets 19 are horizontally aligned with the front and rear ends of the electrode plate 36. Then, the displacement vertical plate 23 is pulled upwards. At this point, the elasticity of the return spring 13 will cause the displacement arm 15 to move and reset, allowing the heat-conducting copper sheet 19 to move until it contacts the electrode plate 36. It then slides onto the outer ring of the extension guide rod 28 through the sleeve hole 14, supporting the displacement arm 15 to move in a straight line. Thus, the heat-conducting copper sheet 19 can accurately contact the electrode sheet 36, facilitating the real-time temperature transfer of the electrode sheet 36. Simultaneously, during displacement, the connecting crossbar 16 can drive the second piston rod 26 into the L-shaped air cylinder 25 via the contact block 17, allowing the first piston rod 24 to move outward away from the L-shaped air cylinder 25. The first piston rod 24 can then slide into the through hole inside the guide side plate 34, fixing the support cavity 29 at a specified height, ensuring stable contact between the heat-conducting copper sheet 19 and the electrode sheet 36. Subsequently, the shaft of an external drive motor is connected to the second sprocket 39, enabling the drive motor to rotate the second sprocket 39 during operation. When the second sprocket 39 rotates, it can drive the first sprocket 36 via the transmission chain 38. 7. Rotation causes the first sprocket 37 and the second sprocket 39 to drive the two extension rods 32 to rotate simultaneously. When the extension rods 32 rotate, they drive the lead screw 35 to rotate. The displacement wing plate 30 is threaded onto the outer ring of the lead screw 35, so that when the lead screw 35 rotates, it drives the displacement wing plate 30 to move in the movable groove inside the extension cavity 31. The top of the displacement wing plate 30 contacts the top and bottom of the movable groove, allowing the displacement wing plate 30 to move in a straight line. When the displacement wing plate 30 moves the temperature probe 33 to contact the copper plate 21, the temperature probe 33 can sense the temperature conducted from the heat-conducting copper plate 19 to the copper plate 21, thereby determining whether the electrode plate 36 is in a high-temperature overload state, completing the work of detecting the electrical energy of the meter 9. Subsequently...When the drive motor drives the shaft to rotate in the opposite direction, it can simultaneously drive the lead screw 35 to rotate in the opposite direction, so that the displacement wing plate 30 can drive the temperature probe 33 to move in the opposite direction, and the temperature of the copper sheet 21 can be detected again, completing the work of the meter 9 to perform the cyclic detection of operating temperature. When this device is in use, when the displacement vertical plate 23 moves downward to open the two contact cylinders 12, the contact block 17 can drive the second piston rod 26 to be pulled out from the inside of the L-shaped air cylinder 25, so that the first piston rod 24 can enter the inside of the L-shaped air cylinder 25, thereby facilitating the sliding of the support cavity 29 between the two guide side plates 34. After the support cavity 29 drives the heat-conducting copper sheet 19 to be horizontally aligned with the electrode plate 36, the first piston rod 24 can be aligned with the circular hole at the specified height of the guide side plate 34. By releasing the synchronous rod 22, the reset spring 13 can push the displacement arm 15 to move and reset, so that the heat-conducting copper sheet 19 and the electrode plate 36 are aligned. Simultaneously with contact at point 6, the first piston rod 24 can be slidably inserted into the circular hole inside the guide side plate 34, which can confine the support cavity 29 to the designated working area. The heat-conducting copper sheet 19 can then contact the electrode plate 36, facilitating the real-time conduction of the operating temperature of the electrode plate 36 by the heat-conducting copper sheet 19, heat-conducting copper pipe 20, and copper sheet 21. When the lead screw 35 rotates, the displacement wing plate 30 can move the temperature probe 33 past the copper sheet 21, detecting the operating temperature of the electrode plate 36. Since two electrode plates 36 are located at the bottom of the meter 9, the displacement wing plate 30, during displacement, can move the temperature probe 33 sequentially past the copper sheet 21, thus detecting the operating temperature of the electrode plate 36. Furthermore, when the lead screw 35 rotates in the reverse direction, it can move the temperature probe 33 past the copper sheet 21 again, allowing for another detection of the operating temperature of the electrode plate 36, completing the cyclic temperature detection of the electrode plate 36.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart metering box with built-in power quality monitoring, comprising a metering box shell (4), wherein branch switches (5) are fixedly installed at equal intervals on one side of the inner side of the metering box shell (4), and a main switch (6) is fixedly installed on the side end of the metering box shell (4) near the branch switches (5), and the main switch (6) is located above the branch switches (5); an inner partition (3) is fixedly installed on the other side of the inner side of the metering box shell (4); a contact mechanism (1) is symmetrically fixedly installed on the side end of the metering box shell (4) near the inner partition (3), and the contact mechanism (1) is located above the inner partition (3); and a protective cavity (2) is fixedly installed on the side end of the contact mechanism (1) away from the main switch (6), characterized in that: The contact mechanism (1) includes a positioning component (7), a back plate (8) and a meter (9). The meter (9) is fixedly installed at equal intervals at the front end of the back plate (8), and the positioning component (7) is slidably installed at equal intervals at the bottom of the front end of the back plate (8).

2. The intelligent metering box with built-in power quality monitoring according to claim 1, characterized in that: The positioning component (7) includes a displacement device (10) and a positioning device (11), wherein the displacement device (10) is symmetrically slidably inserted into the top end of the positioning device (11).

3. The intelligent metering box with built-in power quality monitoring according to claim 2, characterized in that: The displacement device (10) includes a contact cylinder (12), a return spring (13), a sleeve hole (14), a displacement arm (15), a connecting crossbar (16), a contact block (17), an extension bracket (18), a heat-conducting copper sheet (19), a heat-conducting copper tube (20), and a copper sheet (21). The heat-conducting copper tube (20) is symmetrically fixedly installed at the rear end of the heat-conducting copper sheet (19), and the copper sheet (21) is fixedly installed at the bottom rear end of the heat-conducting copper tube (20). The displacement arm (15) is symmetrically fixedly installed at the rear end of the heat-conducting copper sheet (19). The bottom end of the sleeve (14) is opened inside the displacement arm (15), the return spring (13) is fixedly installed at the bottom front end of the displacement arm (15), the connecting crossbar (16) is fixedly installed at the bottom front end of the displacement arm (15), the contact block (17) is fixedly installed at the front end of the connecting crossbar (16), the extension bracket (18) is fixedly installed at the side end of the connecting crossbar (16), and the contact cylinder (12) is fixedly installed at the top of the side end of the extension bracket (18) away from the connecting crossbar (16).

4. The intelligent metering box with built-in power quality monitoring according to claim 3, characterized in that: The positioning device (11) includes a synchronizing rod (22), a displacement vertical plate (23), a first piston rod (24), an L-shaped air cylinder (25), a second piston rod (26), a guide vertical rod (27), an extension guide rod (28), and a support cavity (29). The extension guide rod (28) is symmetrically fixedly installed inside the support cavity (29). The guide vertical rod (27) is fixedly installed at both ends inside the support cavity (29). The displacement vertical plate (23) is slidably sleeved on the outer ring of the guide vertical rod (27). The synchronizing rod (22) is fixedly installed between the two displacement vertical plates (23). The L-shaped air cylinder (25) is symmetrically fixedly installed at both ends inside the support cavity (29), and the L-shaped air cylinder (25) is located at the front and rear ends of the guide vertical rod (27). The second piston rod (26) is slidably inserted into the front end of the L-shaped air cylinder (25), and the first piston rod (24) is slidably inserted into the side end of the L-shaped air cylinder (25).

5. The intelligent metering box with built-in power quality monitoring according to claim 4, characterized in that: An extension cavity (31) is fixedly installed at the bottom end of the back panel (8). An extension rod (32) is rotatably installed on the inner side of the extension cavity (31). A lead screw (35) is fixedly installed on the side end of the extension rod (32). A displacement wing plate (30) is threaded onto the outer ring of the lead screw (35). A temperature probe (33) is fixedly installed at the front end of the displacement wing plate (30). Guide side plates (34) are fixedly installed at equal intervals at the front end of the extension cavity (31).

6. The intelligent metering box with built-in power quality monitoring according to claim 5, characterized in that: The protective cavity (2) is rotatably mounted with a first sprocket (37) at its top and a second sprocket (39) at its bottom. A transmission chain (38) is meshed on the outer rings of the first sprocket (37) and the second sprocket (39).

7. The intelligent metering box with built-in power quality monitoring according to claim 6, characterized in that: The sleeve (14) is slidably sleeved on the outer ring of the extension guide rod (28). The end of the return spring (13) away from the displacement arm (15) is connected to the side end of the support cavity (29) near the second piston rod (26). The support cavity (29) is slidably sleeved between the two guide side plates (34). The back plate (8) is fixedly installed inside the rear end of the metering box shell (4). The first sprocket (37) and the second sprocket (39) are respectively connected to the extension rod (32).

8. The intelligent metering box with built-in power quality monitoring according to claim 7, characterized in that: The copper sheet (21) has a groove at its rear end. The contact block (17) is connected to the second piston rod (26) at the side end near the extension bracket (18). The top of the support cavity (29) has symmetrical guide grooves. The top of the guide rod (27) is fixedly equipped with an anti-detachment plate. The L-shaped air cylinder (25) is hollow inside. A sealed cavity is formed between the first piston rod (24), the L-shaped air cylinder (25), and the second piston rod (26). The bottom ends of both sides of the displacement vertical plate (23) are inclined at 45°. The top two ends of the support cavity (29) have through holes that match the displacement vertical plate (23). The reset spring (13) is located on the outer ring of the extension guide rod (28).

9. A smart metering box with built-in power quality monitoring according to claim 8, characterized in that: The guide side plate (34) has symmetrical slots inside, the front end of the extension cavity (31) has a movable groove inside, and the top and bottom of the displacement wing plate (30) are in contact with the top and bottom of the movable groove inside. The side end of the guide side plate (34) and the two ends inside the support cavity (29) are both provided with round holes. The displacement vertical plate (23) is vertically aligned with the contact cylinder (12). The two ends of the support cavity (29) are fixedly installed with key. The copper sheet (21) is horizontally aligned with the temperature probe (33).

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