Electric energy metering box operation state monitoring device

Abstract

An electric energy metering box operation state monitoring device disclosed by the present invention comprises a box body and an attaching sheet, a mounting plate close to the rear is fixedly arranged in the box body, an upper row of metering instruments and a lower row of metering instruments are arranged on the mounting plate, and a positioning shaft located between the upper row of metering instruments and the lower row of metering instruments is fixedly arranged on the front side of the mounting plate. And a row of clamping devices are arranged on the positioning shaft. According to the invention, the protective cover and the rubber ring are arranged, and the protective cover is attached to the outer wall of the metering instrument, so that an anti-pollution environment can be provided for the attaching piece, and the attaching piece can be effectively prevented from being interfered by dust impurities and oil stains. Through the arrangement of the sliding sleeve, the elastic support and the arm rod, the two protective covers respectively extrude the outer side walls of the two metering instruments, and the two metering instruments are subjected to the same extrusion force of the protective covers, so that the protective covers can be ensured to reliably extrude the outer walls of the metering instruments, and the laminating sheet can be ensured to be in a reliable closed environment. According to the arrangement, the problem that pollutants affect reliable transmission of leakage current of the attaching piece can be solved.

Description

Technical Field

[0001] This invention relates to the field of electricity metering box monitoring technology, and in particular to an electricity metering box operation status monitoring device. Background Technology

[0002] An electricity metering box is an auxiliary device used for electricity metering and monitoring, typically composed of metering instruments such as electricity meters, current transformers, and voltage transformers. It accurately measures parameters such as electricity quantity, voltage, and current in the power grid, providing users with reliable electricity data and operational status information. However, because multiple electricity metering devices are installed inside the box, heat is generated during operation, and there is a risk of leakage. Therefore, its operational status needs to be monitored and processed in real time.

[0003] Currently, after prolonged use, the metering instruments inside electricity metering boxes may experience leakage current monitoring due to aging or physical damage to their internal insulation materials. This can lead to direct contact between the live wire and the outer casing. Additionally, the humid environment in which the metering box operates can cause the instrument casing to become electrified. To ensure the reliable, stable, and safe operation of the metering instruments, leakage current monitoring of the casing is necessary. A common monitoring method involves pressing an adhesive strip against the outer wall of the metering instrument. This strip is connected to a current sensor via a wire, which monitors the leakage current status of the outer wall. However, dust easily accumulates inside the electricity metering box, and vibrations can cause the adhesive strip to adhere tightly to the outer wall of the metering instrument, resulting in high resistance to leakage current transmission or even blocking the transmission of leakage current.

[0004] Therefore, this invention proposes a device for monitoring the operating status of an electricity metering box. Summary of the Invention

[0005] The purpose of this invention is to provide an energy metering box operation status monitoring device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A power metering box operation status monitoring device includes a box body and a bonding plate. A mounting plate is fixedly installed near the rear of the box body. Two rows of metering instruments are mounted on the mounting plate. A positioning shaft is fixedly installed on the front side of the mounting plate between the two rows of metering instruments. A row of clamping devices is installed on the positioning shaft. Each clamping device includes a fixed sleeve, a protective cover, an elastic support, an arm, and a pre-tightened anti-vibration brace. The fixed sleeve is fixedly fitted onto the outside of the positioning shaft. Two sliding sleeves are fitted onto the fixed sleeve. Two protective covers are located on the upper and lower sides of the fixed sleeve, respectively. The two protective covers are respectively bonded to the left and right opposite sides of the two metering instruments distributed vertically. The opposite sides of the two protective covers are connected by the arm and the two sliding sleeves, respectively. The two sliding sleeves are connected by the elastic support. A bonding plate is connected to the bottom of the protective cover through the pre-tightened anti-vibration brace. This bonding plate is bonded to the outer wall of the metering instrument.

[0007] As a further description of the above technical solution: An L-shaped plate is fixedly connected to the outer wall of the sliding sleeve by a connecting plate, and an elastic support is provided between the two sliding sleeves. The elastic support is located between the short plates of the L-shaped plates on the two sliding sleeves.

[0008] As a further description of the above technical solution: The elastic support includes a pressure sensor and an elastic telescopic rod. One end of the elastic telescopic rod abuts against the pressure sensor, which is fixedly mounted on one side of a short plate on one of the L-shaped plates. The other end of the elastic telescopic rod is inserted and connected to one side of a short plate on the other L-shaped plate.

[0009] As a further description of the above technical solution: The elastic telescopic rod includes an inner shaft, a spring, and an outer tube. One end of the inner shaft is sleeved inside the other end of the outer tube, and the other end of the outer tube abuts against a pressure sensor. The spring is located inside the outer tube. A baffle is sleeved on the other end of the inner shaft, and a positioning hole adapted to the insertion of the inner shaft is opened on one side of the short plate adjacent to the inner shaft.

[0010] As a further description of the above technical solution: A connecting platform is fixedly connected to the middle of the back of the protective cover. One end of the arm is hinged to the connecting platform and the other end is fixedly connected to the outer wall of the sliding sleeve. A rubber ring is nested on the end face of the protective cover opposite to the side of the measuring instrument. One side of the rubber ring abuts against one side of the measuring instrument.

[0011] As a further description of the above technical solution: The pre-tightened seismic brace includes a front plate, a rear plate, and a rubber sleeve. The rear plate is located in the middle of the protective cover and has three ear plates evenly distributed circumferentially fixedly connected to its outer periphery. Limiting holes are opened on the ear plates. A guide shaft fitted inside the rubber sleeve is fixedly connected to the rear wall of the protective cover. The rubber sleeve is conical and its large end is opposite to the rear wall of the protective cover. The small end of the rubber sleeve is fitted inside the limiting hole. A second spring fitted outside the guide shaft is connected to the large end of the rubber sleeve. The front plate is located in front of the rear plate. A limiting shaft penetrating the rear plate is fixedly connected to the back of the front plate. The limiting shaft and the rear plate are slidably connected. A third spring located between the rear plate and the front plate is fitted on the limiting shaft. The bonding piece is fixedly installed in front of the front plate.

[0012] As a further description of the above technical solution: The pre-tightened anti-vibration brace also includes a rotating shaft, a torsion spring, and a transmission plate. The rotating shaft is installed through the protective cover and is rotatably connected to the protective cover. One end of the rotating shaft is fixedly fitted with a transmission disc. The outer peripheral wall of the transmission disc is rotatably connected to the transmission plate through a transition plate. The rear wall of the transmission plate fits against the rear wall inside the protective cover. One end of the transmission plate has a U-shaped notch. The guide shaft is located inside the U-shaped notch. One side of the transmission plate has a resistance-increasing inclined surface. One end of the second spring is fixedly connected to a resistance-increasing washer that abuts against the resistance-increasing inclined surface. The other end of the rotating shaft is fixedly connected to a limiting plate. The torsion spring is fitted on the rotating shaft and its two ends are fixedly connected to the opposite sides of the limiting plate and the connecting platform, respectively.

[0013] As a further description of the above technical solution: A temperature sensor is fixedly connected inside the protective cover.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, a protective cover and a rubber ring are provided. The protective cover and the outer wall of the metering instrument are attached to provide a pollution-proof environment for the bonding sheet, which can effectively prevent the bonding sheet from being interfered with by dust, dirt and oil. By setting a sliding sleeve, elastic support and arm, the two protective covers are pressed against the outer walls of the two metering instruments respectively. The two metering instruments are subjected to the same pressure from the protective cover, which can ensure that the protective cover is reliably pressed against the outer wall of the metering instrument and that the bonding sheet is in a reliable closed environment. This arrangement can solve the problem of pollutants affecting the reliable transmission of leakage current of the bonding sheet.

[0015] 2. In this invention, a pre-tightening anti-vibration brace is provided. This pre-tightening anti-vibration brace enables the springs 2 and 3, which provide elastic thrust to the bonding sheet, to adaptively increase their compression when the elastic force decays. This, in turn, increases the elastic force of the springs 2 and 3, resulting in a longer lifespan for the bonding sheet and the metering instrument to be tightly pressed together. A rubber sleeve is also provided. This rubber sleeve, in conjunction with the springs 2 and 3, enables the bonding sheet to have anti-vibration performance after being pressed against the outer wall of the metering instrument. This eliminates vibration interference and ensures that the bonding sheet can accurately conduct leakage current.

[0016] 3. In this invention, the elastic support includes an elastic telescopic rod and a pressure sensor. The pressure sensor is used to monitor the elastic force of the elastic telescopic rod. The elastic telescopic rod indirectly applies opposing tension to the two protective covers. The pressure sensor can obtain the elastic force attenuation of the elastic telescopic rod. The detachable connection of the elastic telescopic rod makes it easier to replace. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an energy metering box operation status monitoring device proposed in this invention; Figure 2 for Figure 1 A schematic diagram after removing one of the measuring instruments; Figure 3 This is a schematic diagram of the clamping device of the power metering box operation status monitoring device proposed in this invention; Figure 4 for Figure 3 A diagram showing the unfolding after the explosion; Figure 5 for Figure 4 A magnified diagram of the central "a"; Figure 6 for Figure 4 A magnified diagram of the central "b"; Figure 7 for Figure 4 A magnified diagram of the central "c".

[0018] Legend: 1. Housing; 2. Mounting plate; 3. Measuring instrument; 4. Positioning shaft; 5. Fitting piece; 6. Clamping device; 61. Fixing sleeve; 611. Sliding sleeve; 6111. L-shaped plate; 61111. Positioning hole; 62. Protective cover; 621. Connecting platform; 622. Rubber ring; 623. Guide shaft; 63. Elastic support; 631. Pressure sensor; 632. Elastic telescopic rod; 6321. Inner shaft; 63211. Baffle; 6322. Spring 1; 6323. Outer sleeve 64. Boom; 65. Pre-tensioned anti-vibration brace; 651. Front plate; 6511. Limiting shaft; 65111. Spring three; 652. Rear plate; 6521. Ear plate; 65211. Limiting hole; 653. Rubber sleeve; 6531. Spring two; 65311. Resistance-increasing washer ring; 654. Rotating shaft; 6541. Transmission plate; 6542. Limiting plate; 655. Torsion spring; 656. Transmission plate; 6561. U-shaped notch; 6562. Resistance-increasing inclined surface; 7. Temperature sensor. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1

[0021] Please see Figure 1-7 A device for monitoring the operating status of an electricity metering box includes a box body 1 and a bonding plate 5. A mounting plate 2 is fixedly installed near the rear of the box body 1. Two rows of metering instruments 3 are installed on the mounting plate 2. The metering instruments 3 are installed on the mounting plate 2 by bolts. These metering instruments 3 are electricity meters. Driven by the core electronics industry, modern electricity meters have transcended the single function of "electricity measurement" and evolved into intelligent sensing terminals that integrate metering, communication, data processing, and safety protection. They have become a key infrastructure for building new power systems and realizing digital energy management. The safe operating status of the metering instruments 3 is a key area that needs to be focused on at present.

[0022] The aforementioned mounting plate 2 has a positioning shaft 4 fixedly installed on its front side, located between the upper and lower rows of measuring instruments 3. Specifically, the two ends of the positioning shaft 4 are fixedly connected to supports that are bolted to the front wall of the mounting plate 2. An insulating plate is placed between the supports and the mounting plate 2 to prevent the positioning shaft 4 from conducting electricity. A row of clamping devices 6 is provided on the positioning shaft 4. The function of the clamping devices 6 is to press the bonding piece 5 tightly onto the outer wall of the measuring instrument 3 to conduct leakage current on the outer wall of the measuring instrument 3. In use, a current sensor is installed on the inner wall of the housing 1. The current sensor is electrically connected to the bonding piece 5 and is used to monitor weak leakage current. One clamping device 6 corresponds to two measuring instruments 3. Specifically, a clamping device 6 is set between two upper and lower distributed measuring instruments 3. The clamping device 6 can clamp the two bonding pieces 5 onto the outer walls of the two upper and lower distributed measuring instruments 3 respectively. The upper and lower measuring instruments 3 share one clamping device 6, which can reduce space occupation. Moreover, this clamping device 6 makes the pressing force of the bonding piece 5 on the upper and lower measuring instruments 3 equal.

[0023] Specifically, the clamping device 6 includes a fixed sleeve 61, a protective cover 62, an elastic support 63, an arm 64, and a pre-tensioned anti-vibration support 65. The fixed sleeve 61 is fixedly sleeved on the outside of the positioning shaft 4. Two sliding sleeves 611 are sleeved on the fixed sleeve 61. In use, corrugated dust covers located at both ends of the sliding sleeves 611 are sleeved on the fixed sleeve 61 to prevent dust from affecting the smooth sliding of the sliding sleeves 611. The protective cover 62 is made of insulating material. There are two protective covers 62, which are located on the upper and lower sides of the fixed sleeve 61, respectively. The two protective covers 62 are respectively connected to two measuring instruments distributed on the upper and lower sides. Table 3 shows the left and right opposing sides of the cover 62, which is a rectangular cover structure. The cover 62 is attached to the outer wall of the measuring instrument 3, and the two sides form an isolation space. This isolation space is a sealed space. The opposing sides of the two covers 62 are connected by an arm 64 and two sliding sleeves 611 respectively. When the sliding sleeves 611 slide, they can drive the cover 62 to move through the arm 64. The two sliding sleeves 611 are connected by an elastic support 63. The function of the elastic support 63 is to apply an elastic tension to the two sliding sleeves 611. This elastic tension allows the cover 62 to be tightly attached to the outer wall of the measuring instrument 3. The protective cover 62 has a connecting platform 621 fixedly connected to the center of its back side. One end of the arm 64 is hinged to the connecting platform 621, and the other end is fixedly connected to the outer wall of the sliding sleeve 611. A rubber ring 622 is nested on the end face of the protective cover 62 opposite to the side of the metering instrument 3. One side of the rubber ring 622 abuts against one side of the metering instrument 3. The hinged connection between the protective cover 62 and the arm 64, combined with the elastic deformation of the rubber ring 622, allows the protective cover 62 and the outer wall of the metering instrument 3 to flexibly fit together, while simultaneously sealing the aforementioned isolation space. The rubber ring 622 is made of thermoplastic vulcanized rubber, which has the advantage of better anti-aging properties.

[0024] In this embodiment, an L-shaped plate 6111 is fixedly connected to the outer wall of the sliding sleeve 611 by a connecting plate. An elastic support 63 is provided between the two sliding sleeves 611. The elastic support 63 is located between the short plates of the L-shaped plates 6111 on the two sliding sleeves 611. The elastic support 63 applies an elastic thrust to the two sliding sleeves 611 by applying a reverse thrust to the short plates on the two L-shaped plates 6111.

[0025] Furthermore, the elastic support 63 includes a pressure sensor 631 and an elastic telescopic rod 632. One end of the elastic telescopic rod 632 abuts against the pressure sensor 631, which is fixedly mounted on one side of a short plate on one of the L-shaped plates 6111. The other end of the elastic telescopic rod 632 is inserted and connected to one side of a short plate on another L-shaped plate 6111. The function of the pressure sensor 631 is to monitor the magnitude of the elastic force of the elastic telescopic rod 632, thereby monitoring the pressure exerted by the cover 62 on the metering instrument 3. This allows for timely acquisition of the elastic force attenuation of the elastic telescopic rod 632. When the elastic force attenuates, the elastic telescopic rod 632 can be replaced in time to ensure reliable compression of the outer wall of the metering instrument 3 by the cover 62.

[0026] The elastic telescopic rod 632 includes an inner shaft 6321, a spring 6322, and an outer tube 6323. One end of the inner shaft 6321 is fitted inside the other end of the outer tube 6323, and the other end of the outer tube 6323 abuts against the pressure sensor 631. The spring 6322 is located inside the outer tube 6323 and provides elastic force to the extension of the elastic telescopic rod 632. The other end of the inner shaft 6321 is fitted with a retainer 63211. A positioning hole 61111 is opened on one side of the short plate adjacent to the inner shaft 6321 to be inserted into the inner shaft 6321. When the inner shaft 6321 is pulled out of the positioning hole 61111, the entire elastic telescopic rod 632 can be removed. When the elastic force of the elastic telescopic rod 632 weakens, it can be replaced by inserting and removing it.

[0027] The bottom of the protective cover 62 is connected to an adhesive piece 5 via a pre-tightening anti-vibration brace 65. The adhesive piece 5 is attached to the outer wall of the metering instrument 3. The adhesive piece 5 is located in the aforementioned isolation space, which can effectively prevent the adhesive piece 5 from being contaminated by dirt. The protective cover 62 presses the adhesive piece 5 against the outer wall of the metering instrument 3 via the pre-tightening anti-vibration brace 65. The function of the pre-tightening anti-vibration brace 65 is to resist vibration, so that the adhesive piece 5 can be stably attached to the outer wall of the metering instrument 3, and so that the weak leakage current on the metering instrument 3 can be conducted to the adhesive piece 5 without interference.

[0028] Specifically, the pre-tensioned seismic brace 65 includes a front plate 651, a rear plate 652, and a rubber sleeve 653. The rear plate 652 is located in the middle of the protective cover 62, and three ear plates 6521 are fixedly connected to its outer periphery in a circumferentially evenly distributed manner. Limiting holes 65211 are opened on the ear plates 6521. A guide shaft 623 fitted inside the rubber sleeve 653 is fixedly connected to the rear wall inside the protective cover 62. One ear plate 6521 corresponds to one guide shaft 623. The rubber sleeve 653 is conical, and its large end is opposite to the rear wall inside the protective cover 62. The small end of the rubber sleeve 653 is fitted inside the limiting hole 65211. The lower end of the rubber sleeve 653 is fixedly connected to an anti-detachment block located in front of the ear plate 6521. The rubber sleeve 653 can be made of thermoplastic polyurethane. A spring 6531 fitted outside the guide shaft 623 is connected to the large end of the rubber sleeve 653. When one end of the spring 6531... When the spring 6531 abuts against the inner rear wall of the protective cover 62, the spring 6531 applies an elastic thrust to the rubber sleeve 653, and the rubber sleeve 653 isolates the ear plate 6521, thereby isolating the rear plate 652. The vibration isolation effect can effectively prevent the protective cover 62 from affecting the stability of the rear plate 652 when it vibrates. The front plate 651 is located in front of the rear plate 652. The back of the front plate 651 is fixedly connected to a limiting shaft 6511 that passes through the rear plate 652. The limiting shaft 6511 and the rear plate 652 are slidably connected. In specific implementation, a guide hole is opened on the surface of the front plate 651 and sleeved on the outside of the limiting shaft 6511. The guide hole and the limiting shaft 6511 are slidably connected. A spring 65111 is sleeved on the limiting shaft 6511 and located between the rear plate 652 and the front plate 651. The spring 65111 applies an elastic thrust to the front plate 651. The bonding piece 5 is fixedly set on the front side of the front plate 651. Therefore, when the protective cover 62 presses against the outer wall of the metering instrument 3, the elastic push of the second spring 6531 and the third spring 65111 causes the adhesive piece 5 to be pressed against the outer wall of the metering instrument 3. The conical rubber sleeve 653 can eliminate vibration. In other words, when the protective cover 62 vibrates and the metering instrument 3 vibrates, the adhesive piece 5 can reliably stick to the outer wall of the metering instrument 3, thereby ensuring the transmission of leakage current.

[0029] Furthermore, the pre-tensioned anti-seismic brace 65 also includes a rotating shaft 654, a torsion spring 655, and a transmission plate 656. The rotating shaft 654 is provided through the protective cover 62, and the rotating shaft 654 is rotatably connected to the protective cover 62, with a transmission disc 6541 fixedly sleeved at one end. Specifically, a channel is opened on the protective cover 62 that is rotatably connected to the rotating shaft 654. This channel extends to the outer surface of the connecting platform 621, and the channel is rotatably connected to the rotating shaft 654. The outer peripheral wall of the transmission disc 6541 is rotatably connected to a connecting plate. In specific implementation, the transmission plate 656 and the adapter plate are hinged together. Lubricant is applied to the hinge joint between the adapter plate and the transmission plate 656 during use. There are three transmission plates 656. The rear wall of each transmission plate 656 fits against the rear wall inside the protective cover 62. Lubricant is applied between the transmission plate 656 and the protective cover 62 during use. One end of each transmission plate 656 has a U-shaped notch 6561, and a guide shaft 623 is located within the U-shaped notch 6561. One guide shaft 623... Within a U-shaped notch 6561, a resistance-increasing inclined surface 6562 is provided on one side of the transmission plate 656. The angle of inclination of the resistance-increasing inclined surface 6562 relative to the bottom surface of the transmission plate 656 is 10-15°. One end of the second spring 6531 is fixedly connected to a resistance-increasing washer ring 65311 that abuts against the resistance-increasing inclined surface 6562. In specific implementation, anti-slip threads are provided on the opposing surfaces of the resistance-increasing inclined surface 6562 and the resistance-increasing washer ring 65311. The other end of the rotating shaft 654 is fixedly connected to a limit plate 6. 542. A torsion spring 655 is sleeved on the rotating shaft 654, and its two ends are fixedly connected to the opposite sides of the limiting plate 6542 and the connecting platform 621, respectively. The rotating shaft 654 has a tendency to rotate under the push of the torsion spring 655. That is to say, under the push of the torsion spring 655, the transmission plate 656 will move away from the transmission plate 6541. During the movement, the transmission plate 656 will use the resistance-increasing inclined surface 6562 to apply a further compression effect of the resistance-increasing washer ring 65311 to the resistance-increasing spring 65111. A torsion plate is fixedly connected to the outer side of the limiting plate 6542. The rotating shaft 654 can be rotated by holding the torsion plate. It should be noted that when bonding the adhesive piece 5 to the outer wall of the metering instrument 3, the rotating shaft 654 is first rotated in the opposite direction to reduce the pressure exerted by the resistance-increasing inclined surface 6562 on the spring 65111. At this time, the compression of the spring 65111 decreases. When the cover 62 and the outer wall of the metering instrument 3 are pressed together, the adhesive piece 5 is pressed against the outer wall of the metering instrument 3. Then the torsion plate is released, and the rotating shaft 654 is reset under the push of the torsion spring 655. The transmission plate 656 will move and use the resistance-increasing inclined surface 6562 to further compress the spring 65111. When the spring 65111 shows signs of elasticity decay, the transmission plate 656 will continue to move to increase the compression of the spring 65111.

[0030] In this embodiment, a temperature sensor 7 is fixedly connected inside the protective cover 62. The temperature sensor 7 is used to monitor the temperature inside the protective cover 62. This temperature is provided by the heat generated by the metering instrument 3, which facilitates the acquisition of the temperature change of the metering instrument 3. The data acquired by the temperature sensor 7 and the current sensor are processed by the data conversion module and then remotely transmitted to the client terminal via the communication module. The display device of the client terminal will display the real-time temperature of the metering instrument 3 and the leakage current status of the outer wall of the metering instrument 3. Since the data conversion module and the communication module are existing technologies, this application will not describe their structure and working principle in detail.

[0031] Working principle: During use, when the metering instrument 3 leaks current, a leakage current is generated on its outer wall. This leakage current is transmitted through the bonding piece 5 to the current sensor installed on the inner wall of the housing 1. The heat generated by the metering instrument 3 is detected by the temperature sensor 7. When one of the metering instruments 3 malfunctions and needs to be replaced, the bolts that hold the metering instrument 3 are removed. Then, a support (rod-shaped) is placed between the two L-shaped plates 6111 on the corresponding clamping device 6, indirectly opening the two sliding sleeves 611. At this time, the two protective covers 62 on the clamping device 6 will detach from the outer wall of their respective corresponding metering instruments 3. When the bonding piece 5 inside the protective cover 62 leaves the outer wall of the metering instrument 3, the metering instrument 3 that needs to be replaced can be removed directly. Then, a new metering instrument 3 is installed, and the aforementioned support is removed. At this time, the rubber rings 622 on the two protective covers 62 are pressed against the outer wall of the corresponding measuring instrument 3. At this time, the bonding pieces 5 inside the two protective covers 62 will be pressed against the outer wall of the corresponding measuring instrument 3. At this time, the third spring 65111 will be compressed and the second spring 6531 will be compressed. Then, the rotating shaft 654 is manually rotated through the torsion plate, the torsion spring 655 is compressed, the rotating shaft 654 drives the transmission disk 6541 to rotate. When the transmission disk 6541 rotates, it drives the transmission plate 656 to move so that its free end is close to the adjacent guide shaft 623. At this time, the resistance increasing inclined surface 6562 slides away from the resistance increasing pad ring 65311, and the second spring 6531 will extend a certain length. Since the friction between the resistance increasing inclined surface 6562 and the resistance increasing pad ring 65311 is greater than the elastic force of the torsion spring 655, the resistance increasing inclined surface 6562 will be stationary. After prolonged use, when the elastic force of springs 6531 and 65111 decreases, the friction between the resistance-increasing inclined surface 6562 and the resistance-increasing washer ring 65311 decreases. At this time, the torsion spring 655 will indirectly push the resistance-increasing inclined surface 6562 to move and squeeze spring 65111, thereby indirectly increasing the squeezing force of the bonding piece 5 on the outer wall of the metering instrument 3, so that the bonding piece 5 and the metering instrument are reliably squeezed and bonded, ensuring that the leakage current on the outer wall of the metering instrument is stably and accurately transmitted to the bonding piece 5. When the elastic force of spring 6322 in the elastic telescopic rod 632 decreases, the pressure sensor 631 detects the pressure change. When the pressure value drops to a safe value, the cover 62 is difficult to fit tightly with the outer wall of the metering instrument 3. At this time, the elastic telescopic rod 632 needs to be replaced in time to ensure that the bonding piece 5 and the outer wall of the metering instrument 3 are reliably squeezed.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for monitoring the operating status of an electricity metering box, comprising a box body (1) and a bonding plate (5), wherein a mounting plate (2) is fixedly installed inside the box body (1) near the rear, and two rows of metering instruments (3) are arranged on the mounting plate (2), characterized in that, The front side of the mounting plate (2) is fixedly provided with a positioning shaft (4) located between the upper and lower rows of measuring instruments (3). A row of clamping devices (6) is provided on the positioning shaft (4). The clamping device (6) includes a fixed sleeve (61), a protective cover (62), an elastic support (63), an arm (64), and a pre-tightened anti-vibration support (65). The fixed sleeve (61) is fixedly sleeved on the outside of the positioning shaft (4). Two sliding sleeves (611) are sleeved on the fixed sleeve (61). The protective cover (62) has a number of... There are two measuring instruments, located on the upper and lower sides of the fixed sleeve (61) respectively. The two protective covers (62) are respectively attached to the left and right opposite sides of the two measuring instruments (3) distributed on the upper and lower sides. The opposite sides of the two protective covers (62) are connected by the arm (64) and the two sliding sleeves (611) respectively. The two sliding sleeves (611) are connected by the elastic support (63). The bottom of the protective cover (62) is connected to the bonding piece (5) by the pre-tightened anti-vibration support (65). The bonding piece (5) is attached to the outer wall of the measuring instrument (3).

2. The power metering box operation status monitoring device according to claim 1, characterized in that, The outer wall of the sliding sleeve (611) is fixedly connected to an L-shaped plate (6111) by a connecting plate. An elastic support (63) is provided between the two sliding sleeves (611), and the elastic support (63) is located between the short plates of the L-shaped plates (6111) on the two sliding sleeves (611).

3. The power metering box operation status monitoring device according to claim 2, characterized in that, The elastic support (63) includes a pressure sensor (631) and an elastic telescopic rod (632). One end of the elastic telescopic rod (632) abuts against the pressure sensor (631). The pressure sensor (631) is fixedly installed on one side of a short plate on one of the L-shaped plates (6111). The other end of the elastic telescopic rod (632) is inserted and connected to one side of a short plate on the other L-shaped plate (6111).

4. The power metering box operation status monitoring device according to claim 3, characterized in that, The elastic telescopic rod (632) includes an inner shaft (6321), a spring (6322), and an outer tube (6323). One end of the inner shaft (6321) is sleeved inside the other end of the outer tube (6323). The other end of the outer tube (6323) abuts against the pressure sensor (631). The spring (6322) is located inside the outer tube (6323). A baffle (63211) is sleeved on the other end of the inner shaft (6321). A positioning hole (61111) is opened on one side of the short plate adjacent to the inner shaft (6321) to be inserted into and adapted to the inner shaft (6321).

5. The power metering box operation status monitoring device according to claim 1, characterized in that, A connecting platform (621) is fixedly connected to the middle of the back of the protective cover (62). One end of the arm (64) is hinged to the connecting platform (621) and the other end is fixedly connected to the outer wall of the sliding sleeve (611). A rubber ring (622) is nested on the end face of the protective cover (62) opposite to the side of the measuring instrument (3). One side of the rubber ring (622) abuts against one side of the measuring instrument (3).

6. The power metering box operation status monitoring device according to claim 5, characterized in that, The pre-tightened seismic brace (65) includes a front plate (651), a rear plate (652), and a rubber sleeve (653). The rear plate (652) is located in the middle of the protective cover (62) and has three circumferentially evenly distributed ear plates (6521) fixedly connected to its outer periphery. Limiting holes (65211) are provided on the ear plates (6521). A guide shaft (623) fitted inside the rubber sleeve (653) is fixedly connected to the rear wall inside the protective cover (62). The small end of the rubber sleeve (653) is fitted inside the limiting hole (65211). The rubber sleeve (653) is conical and its large end is connected to the protective cover (62). The rear walls of the inner discs are opposite each other. The large end of the rubber sleeve (653) is connected to a spring two (6531) sleeved on the outside of the guide shaft (623). The front disc (651) is located on the front side of the rear disc (652). The back of the front disc (651) is fixedly connected to a limiting shaft (6511) that passes through the rear disc (652). The limiting shaft (6511) and the rear disc (652) are slidably connected. A spring three (65111) is sleeved on the limiting shaft (6511) and located between the rear disc (652) and the front disc (651). The bonding piece (5) is fixedly set on the front side of the front disc (651).

7. The power metering box operation status monitoring device according to claim 6, characterized in that, The pre-tensioned anti-vibration brace (65) also includes a rotating shaft (654), a torsion spring (655), and a transmission plate (656). The rotating shaft (654) is installed through the protective cover (62). The rotating shaft (654) and the protective cover (62) are rotatably connected, and a transmission disc (6541) is fixedly sleeved on one end of the rotating shaft (6541). The outer peripheral wall of the transmission disc (6541) is rotatably connected to the transmission plate (656) through a transition plate. The rear wall of the transmission plate (656) fits against the rear wall inside the protective cover (62). A U-shaped notch (655) is opened at one end of the transmission plate (656). 61), the guide shaft (623) is located inside the U-shaped notch (6561), the transmission plate (656) has a resistance-increasing inclined surface (6562) on one side, one end of the second spring (6531) is fixedly connected to a resistance-increasing pad ring (65311) that abuts against the resistance-increasing inclined surface (6562), the other end of the rotating shaft (654) is fixedly connected to a limiting plate (6542), the torsion spring (655) is sleeved on the rotating shaft (654) and its two ends are fixedly connected to the opposite sides of the limiting plate (6542) and the connecting platform (621) respectively.

8. The power metering box operation status monitoring device according to claim 1, characterized in that, A temperature sensor (7) is fixedly connected inside the protective cover (62).

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