A power metering box for photovoltaics

Abstract

The application discloses a kind of electric energy metering box for photovoltaic, specifically relates to the technical field of metering box shell, including shell, sleeve block, pivot and linkage constant force mechanism;Wherein linkage constant force mechanism includes two sleeve plates, rack, sleeve block, screw rod, sleeve frame, speed reducer motor, sleeve strip, auxiliary pressure sensor and drive motor, also includes personnel identification mechanism and constant pressure positioning switching detection component.The application has the advantages that the electric energy metering box can be automatically known to be not closed tightly, so that it can also be known that the maintenance personnel are not near the electric energy metering box, and the upper and lower maintenance doors can be automatically closed for protection, greatly improving the use safety, thereby solving the problems that it is difficult to automatically know that the electric energy metering box is not closed tightly, it is difficult to know that the maintenance personnel are not near the electric energy metering box, and it is difficult to automatically close for protection, and the use safety is poor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metering box shell, more particularly, the present application relates to a photovoltaic electric energy metering box. BACKGROUND

[0002] The photovoltaic electric energy metering box is mainly used for measuring the electric energy generated by the photovoltaic power generation system, which is its most basic function. The photovoltaic electric energy metering box can protect the electric quantity metering table inside it, so that the electric quantity metering table can accurately understand the power generation efficiency and output electric quantity of the photovoltaic system through accurate measurement, and provide the basis for the payment of power generation subsidies and the settlement of power grid, so the photovoltaic electric energy metering box is particularly important in the process of measurement.

[0003] In the existing public literature, the patent with the patent announcement number CN206193047U discloses an electric energy metering box, which mainly comprises a circular groove formed on one side of the second fixed block, a clasp ring arranged at the bottom of the groove, a spring connected to the lower part of the clasp hook, a flow guide plate arranged on the upper part of the rear end face of the metering box cover plate, the flow guide plate and the upper part of the metering box cover plate are not parallel, the length of the flow guide plate is greater than the width of the metering box cover plate, and two fixed clamps are arranged on the bottom of the metering box body, and a fixed hole is arranged on the fixed clamp. The technology has the advantages of simple structure, convenient use and maintenance. However, the electric energy metering box has the following problems.

[0004] Photovoltaic power generation needs to be spread out in a relatively open place to generate electricity, and the electric energy metering box needs to be measured by the electric meter inside it during the photovoltaic power generation process. Since the electric energy metering box has an electric meter and other wire structures inside, maintenance personnel need to regularly go to the photovoltaic power generation area to repair the electric meter inside the electric energy metering box, which requires opening the door of the electric energy metering box. After the repair is completed, the door needs to be closed. Once the repair personnel forget to close the door tightly and move away from the electric energy metering box, the electric energy metering box is opened as a whole, which is easy to cause other non-professional personnel to touch the internal electrical elements of the electric metering box, or the external rainwater and dust to cause safety failure problems of the metering electric meter. Therefore, it is difficult to automatically know that the electric energy metering box is not closed tightly, and it is difficult to know that the repair personnel are not near the electric energy metering box, and it is difficult to automatically close and protect, so the safety is poor. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the present application provides the following technical scheme: a photovoltaic electric energy metering box, comprising a shell, a sleeve block and a shaft, the sleeve block is fixedly connected to one side of the shell, the shaft is rotatably connected to the inner wall of the sleeve block, and the upper part of the sleeve block is provided with a linkage constant force mechanism; the linkage constant force mechanism comprises two sleeve plates fixedly arranged on the upper part of the sleeve block, the two sleeve plates are fixedly connected between the shaft, and a gear is arranged between the two sleeve plates and fixedly connected between the shaft.

[0006] The outer wall side of the gear is engaged with a rack, and the bottom end of the rack is fixedly connected with a sleeve block, the inner wall of the sleeve block is threadedly connected with a screw rod, the outer wall of the sleeve block is slidably connected with a sleeve frame, the rack and the sleeve frame are slidably connected, and the sleeve frame is fixedly connected with the shell, one end of the sleeve frame is fixedly connected with a speed reducer motor, and the speed reducer motor is used to drive the screw rod to rotate; one end of each of the sleeve plates is fixedly connected with a sleeve strip, and an auxiliary pressure sensor is fixedly connected in the sleeve strip; the other side of the shell is provided with a driving motor, the output end of the driving motor is provided with a personnel identification mechanism; the driving motor is provided with a displacement motor above, and the outer wall of the output end of the displacement motor is provided with a constant pressure positioning switching detection assembly.

[0007] Preferably, the two sleeve plates are symmetrically arranged about the gear, the cross-sectional shape of the rack is concave, the output end of the speed reducer motor is fixedly connected with the screw rod, the outer wall of the sleeve block and the sleeve frame are slidably connected, the outer wall of the sleeve block and the inner wall of the sleeve frame are smooth surfaces, two mounting strips are fixedly connected on one side of the inner wall of the shell, and an electric quantity meter is fixedly installed on one side of the mounting strip, a controller is arranged on one side of the displacement motor, and the controller is fixedly connected with the shell.

[0008] In use, the speed reducer motor drives the screw rod to rotate in the sleeve frame, the sleeve block drives the rack to move left, the gear drives the rotating shaft to rotate clockwise, the rotating shaft simultaneously drives the two sleeve plates to rotate clockwise, the sleeve strip makes the auxiliary pressure sensor rotate clockwise, one auxiliary pressure sensor is pressed on the outer wall of the upper maintenance door, and the other auxiliary pressure sensor is pressed on the lower maintenance door. When the extrusion values sensed by the two auxiliary pressure sensors are the pressure values set by the controller, the lower maintenance door and the upper maintenance door are not tightly closed.

[0009] Preferably, the personnel identification mechanism comprises a rotating rod fixedly arranged at the output end of the driving motor; the outer wall of the rotating rod is fixedly connected with a sleeving rotating block, and one end of the rotating rod is fixedly connected with an angle sensor; the outer wall of the angle sensor is provided with a support on one side; the shell and the angle sensor are fixedly connected with the support; the bottom end of the sleeving rotating block is fixedly connected with an arc-shaped groove rail, and one side of the arc-shaped groove rail is fixedly connected with two slip rings; the inner part of each slip ring is rotatably connected with a belt pulley; the two belt pulleys are rotatably connected with the arc-shaped groove rail; the outer wall of the belt pulley is drivingly connected with a transmission belt; the transmission belt is slidingly connected with the arc-shaped groove rail; one end of one of the belt pulleys is fixedly connected with a linkage motor; the upper surface of the linkage motor is provided with a support block; the sleeving rotating block and the linkage motor are fixedly connected with the support block; the outer wall of the transmission belt is fixedly connected with an infrared sensor on one side; the infrared sensor is slidingly connected with the arc-shaped groove rail; the vertical section shape of the arc-shaped groove rail is arc-shaped; the vertical section shape of the two belt pulleys is circular; the transmission belt is made of rubber material; the support block is used for supporting the linkage motor; and the linkage motor is used for driving the belt pulley to rotate.

[0010] In use, the driving motor drives the rotating rod to rotate counterclockwise by ninety degrees, the rotating rod drives the sleeving rotating block to rotate counterclockwise by ninety degrees, the sleeving rotating block drives the arc-shaped groove rail to rotate counterclockwise by ninety degrees, the support block drives the linkage motor to rotate counterclockwise by ninety degrees, the belt pulley drives the transmission belt to rotate counterclockwise by ninety degrees, and the angle sensor senses the angle of the rotating rod. When the angle value sensed by the angle sensor is the same as the ninety-degree value set by the controller, the driving motor is turned off by the controller. The linkage motor drives the belt pulley to rotate forward, the belt pulley drives the transmission belt to drive forward, and the transmission belt drives the infrared sensor to move right along the inner wall of the arc-shaped groove rail. Then the linkage motor drives the belt pulley to rotate reversely, the belt pulley drives the transmission belt to drive reversely, and the transmission belt drives the infrared sensor to move left along the inner wall of the arc-shaped groove rail. The infrared sensor can be identified by the arc-shaped reciprocating displacement of the linkage motor.

[0011] Preferably, the constant-pressure positioning switching detection assembly comprises a rotating sleeve plate fixedly arranged on the outer wall of the displacement motor; the displacement motor is fixedly connected with the shell; the inner wall of the rotating sleeve plate is fixedly connected with a distance sensor; one side of the distance sensor is provided with two sensing blocks; one side of the sensing block is fixedly connected with an upper maintenance door; and one side of the other sensing block is fixedly connected with a lower maintenance door; the upper maintenance door and the lower maintenance door are hingedly connected with the shell.

[0012] The side of the rotating sleeve plate is provided with an extrusion sleeve plate, the inner wall of the extrusion sleeve plate is slidably connected with a guide column, the guide column is fixedly connected with the shell, the top end of the guide column is fixedly connected with a positioning pressure sensor, and the output end of the positioning pressure sensor is fixedly connected with the extrusion sleeve plate.

[0013] When the technology is used, the upper maintenance door drives the inductive block to extrude the extrusion sleeve plate, and the lower maintenance door also drives another inductive block to extrude the extrusion sleeve plate. The extrusion sleeve plate is forced to slide left along the outer wall of the guide column. The positioning pressure sensor can sense the pressure of the extrusion sleeve plate. When the pressure value sensed by the positioning pressure sensor is lower than the pressure value set by the controller, the controller starts the displacement motor. The displacement motor drives the rotating sleeve plate to rotate counterclockwise by one hundred and eighty degrees and then rotate clockwise by one hundred and eighty degrees. The rotating sleeve plate drives the distance sensor to rotate back and forth. The distance sensor can also sense the distance of another inductive block. When the distance value sensed by the distance sensor is different from the positioning distance set by the controller, the upper maintenance door and the lower maintenance door are not tightly closed with the shell.

[0014] The technical effects and advantages of the present application are as follows:

[0015] 1. The linkage constant force mechanism is used to know when the maintenance personnel is far away and the upper maintenance door and the lower maintenance door are not tightly closed. The reduction motor drives the screw to rotate inside the sleeve frame. The sleeve block drives the rack to move left. The gear drives the shaft to rotate clockwise. The shaft drives the two sleeve plates to rotate clockwise. The sleeve plate drives the sleeve to rotate clockwise. One auxiliary pressure sensor is extruded on the outer wall of the upper maintenance door, and the other auxiliary pressure sensor is extruded on the lower maintenance door. The upper maintenance door and the lower maintenance door can be tightly closed with the shell. The electric energy metering box can be automatically known to be not tightly closed, so that it can also be known that the maintenance personnel is not near the electric energy metering box. The upper maintenance door and the lower maintenance door can be automatically closed to protect the safety.

[0016] 2. The personnel identification mechanism is used to drive the motor to drive the rotating rod to rotate counterclockwise by ninety degrees. The sleeve block drives the arc-shaped groove to rotate counterclockwise by ninety degrees. The linkage motor rotates counterclockwise by ninety degrees. When the angle value sensed by the angle sensor is the same as the ninety-degree value set by the controller, the linkage motor is continuously driven to rotate forward and backward, so that the infrared sensor can be identified by arc-shaped reciprocating displacement. It is known that there is no maintenance personnel outside the shell, and it is known that the maintenance personnel is not near the electric energy metering box. Only then the upper maintenance door and the lower maintenance door can be tightly closed.

[0017] 3、The present application adopts a fixed pressure positioning switching detection assembly. When the maintenance personnel do not close the maintenance upper door and the maintenance lower door, the maintenance personnel is far away from the shell, the maintenance upper door drives the induction block to extrude the extrusion sleeve plate, and the maintenance lower door drives another induction block to extrude on the extrusion sleeve plate. When the pressure value sensed by the positioning pressure sensor is lower than the pressure value set by the controller, the displacement motor drives the rotating sleeve plate to rotate counterclockwise by one hundred and eighty degrees and then rotate clockwise by one hundred and eighty degrees. When the distance value sensed by the distance sensor is different from the positioning distance set by the controller, the maintenance upper door and the maintenance lower door are not closed tightly with the shell. The maintenance upper door and the maintenance lower door can timely know that they are in the unclosed state and can automatically close for protection, greatly improving the use safety.

[0018] The mutual influence of the above-mentioned multiple effects first causes the pressure value sensed by the positioning pressure sensor to be lower than the pressure value set by the controller, and simultaneously causes the distance value sensed by the distance sensor to be different from the positioning distance set by the controller. Then the rotating rod drives the sleeved rotating block to rotate counterclockwise by ninety degrees, causing the infrared sensor to perform arc-shaped reciprocating displacement recognition. Finally, one auxiliary pressure sensor is extruded on the outer wall of the maintenance upper door, and the other auxiliary pressure sensor is extruded on the maintenance lower door, so that the maintenance upper door and the maintenance lower door can perform the closing operation on the shell. In summary, it can be automatically known that the electric energy metering box is not closed tightly, so that it can also be known that the maintenance personnel is not near the electric energy metering box, and the maintenance upper door and the maintenance lower door can be automatically closed for protection, greatly improving the use safety of the photovoltaic electric energy metering box. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a partial structure schematic diagram of the photovoltaic electric energy metering box of the present application.

[0020] Figure 2 It is a partial structure schematic diagram of the shell and the sleeve block connection.

[0021] Figure 3 It is a partial structure schematic diagram of the shell and the sleeve block connection. Figure 2 It is an enlarged structure schematic diagram of A in the middle.

[0022] Figure 4 It is a partial main view structure schematic diagram of the screw rod and the speed reducer motor connection.

[0023] Figure 5 It is a partial structure schematic diagram of the rotating shaft and the sleeve plate connection.

[0024] Figure 6 It is a whole vertical cross-section structure schematic diagram of the photovoltaic electric energy metering box of the present application.

[0025] Figure 7 It is a whole side view structure schematic diagram of the photovoltaic electric energy metering box of the present application.

[0026] Figure 8 It is the schematic view of the local structure of the bracket and the shell connection of the application.

[0027] Figure 9 It is the schematic view of the local structure of the pulley and the slip ring connection of the application.

[0028] Figure 10 It is the schematic view of the local structure of the pulley and the slip ring connection of the application. Figure 7 It is the schematic view of the local structure of the pulley and the slip ring connection of the application.

[0029] Figure 11 It is the schematic view of the local structure of the pulley and the slip ring connection of the application.

[0030] The figure mark is: 1, the shell; 2, the sleeve block; 3, the rotating shaft; 4, the gear; 5, the rack; 6, the sleeve block; 7, the screw; 8, the sleeve frame; 9, the speed reducer motor; 10, the sleeve plate; 11, the sleeve strip; 12, the auxiliary pressure sensor; 13, the maintenance upper door; 14, the maintenance lower door; 15, the installation strip; 16, the electric quantity meter; 17, the driving motor; 18, the displacement motor; 19, the controller; 20, the rotating rod; 21, the sleeve rotating block; 22, the angle sensor; 23, the support; 24, the arc-shaped slot rail; 25, the slip ring; 26, the pulley; 27, the transmission belt; 28, the linkage motor; 29, the support block; 30, the infrared sensor; 31, the rotating sleeve plate; 32, the distance sensor; 33, the induction block; 34, the extrusion sleeve plate; 35, the guide column; 36, the positioning pressure sensor. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0032] As shown in the accompanying drawings, the electric energy metering box for photovoltaic is provided with linkage constant force mechanism, personnel identification mechanism and constant voltage positioning switching detection assembly. The setting of each mechanism and assembly can automatically know that the electric energy metering box is not tightly closed, so that it can also be known that the maintenance personnel are not near the electric energy metering box, and the maintenance upper door 13 and the maintenance lower door 14 can be automatically closed for protection, which greatly improves the use safety. The specific structure of each mechanism and assembly is set as follows. Figures 1-11 In the technical solution, as shown in the accompanying drawings,

[0033] Figures 1-7 ​As shown in the figure, the sleeve block 2 is fixedly connected to one side of the shell 1, and the rotating shaft 3 is rotatably connected to the inner wall of the sleeve block 2, characterized in that: a linkage constant force mechanism is arranged above the sleeve block 2; the linkage constant force mechanism comprises two sleeve plates 10 fixedly arranged above the sleeve block 2, both of which are fixedly connected with the rotating shaft 3, and a gear 4 is arranged between the two sleeve plates 10, and the gear 4 is fixedly connected with the rotating shaft 3.

[0034] The outer wall of the gear 4 is meshingly and drivingly connected with a rack 5, the bottom end of the rack 5 is fixedly connected with a sleeve block 6, the rack 5 is slidingly connected with a sleeve frame 8, the inner wall of the sleeve block 6 is threadedly connected with a screw rod 7, the outer wall of the sleeve block 6 is slidingly connected with the sleeve frame 8, the sleeve frame 8 is fixedly connected with the shell 1, one end of the sleeve frame 8 is fixedly connected with a speed reducer motor 9, and the speed reducer motor 9 is used to drive the screw rod 7 to rotate; one end of each sleeve plate 10 is fixedly connected with a sleeve strip 11, and an auxiliary pressure sensor 12 is fixedly connected in the sleeve strip 11; the other side of the shell 1 is provided with a driving motor 17, the output end of the driving motor 17 is provided with a personnel identification mechanism; the upper side of the driving motor 17 is provided with a displacement motor 18, and the outer wall of the output end of the displacement motor 18 is provided with a constant-pressure positioning switching detection assembly.

[0035] In the technical solution, as shown in the figure, Figures 1-6 The inner wall of the shell 1 is fixedly connected with two mounting strips 15, and the mounting strip 15 is fixedly connected with an electric quantity meter 16 on one side, so as to support the mounting strip 15 by the shell 1, support the electric quantity meter 16 by the mounting strip 15, and greatly improve the stability of the electric quantity meter 16. One side of the displacement motor 18 is provided with a controller 19, and the controller 19 is fixedly connected with the shell 1, so as to start the displacement motor 18 when the pressure value sensed by the positioning pressure sensor 36 is lower than the pressure value set by the controller 19, and realize the driving operation of the displacement motor 18.

[0036] In the technical solution, as shown in the figure, Figures 7-9 The personnel identification mechanism comprises a rotating rod 20 fixedly arranged at the output end of the driving motor 17; the outer wall of the rotating rod 20 is fixedly connected with a sleeve rotating block 21, one end of the rotating rod 20 is fixedly connected with an angle sensor 22, the outer wall of the angle sensor 22 is provided with a bracket 23, and the shell 1 and the angle sensor 22 are fixedly connected with the bracket 23.

[0037] The bottom end of the sleeved rotating block 21 is fixedly connected with an arc-shaped groove rail 24, and one side of the arc-shaped groove rail 24 is fixedly connected with two slip rings 25. The inner part of each slip ring 25 is rotatably connected with a belt pulley 26. The two belt pulleys 26 are rotatably connected with the arc-shaped groove rail 24. The outer wall of the belt pulley 26 is transmissionally connected with a transmission belt 27. The transmission belt 27 is slidingly connected with the arc-shaped groove rail 24. One end of one of the belt pulleys 26 is fixedly connected with a linkage motor 28. The upper surface of the linkage motor 28 is provided with a supporting block 29. The sleeved rotating block 21 and the linkage motor 28 are fixedly connected with the supporting block 29. One side of the outer wall of the transmission belt 27 is fixedly connected with an infrared sensor 30. The infrared sensor 30 is slidingly connected with the arc-shaped groove rail 24. The vertical section shape of the arc-shaped groove rail 24 is arc-shaped. The vertical section shape of the two belt pulleys 26 is circular. The transmission belt 27 is made of rubber material. The supporting block 29 is used for supporting the linkage motor 28. The linkage motor 28 is used for driving the belt pulley 26 to rotate.

[0038] In the technical solution, as shown in the accompanying drawings, Figures 10-11 The distance sensor 32 is provided with two induction blocks 33 on one side. One side of the induction block 33 is fixedly connected with the maintenance upper door 13. One side of the other induction block 33 is fixedly connected with the maintenance lower door 14. The maintenance upper door 13 and the maintenance lower door 14 are hingedly connected with the shell 1. One side of the rotating sleeve plate 31 is provided with an extrusion sleeve plate 34. The inner wall of the extrusion sleeve plate 34 is slidingly connected with a guide column 35. The guide column 35 is fixedly connected with the shell 1. The top end of the guide column 35 is fixedly connected with a positioning pressure sensor 36. The output end of the positioning pressure sensor 36 is fixedly connected with the extrusion sleeve plate 34. The positioning pressure sensor 36 is used for sensing the extrusion force of the extrusion sleeve plate 34. The two induction blocks 33 are symmetrically arranged about the guide column 35. The vertical section shape of the two induction blocks 33 is rectangular.

[0039] The use method of the electric energy metering box for photovoltaics is as follows:

[0040] Firstly, when the electric energy metering is used, the shell 1 is fixed on the photovoltaic support. Meanwhile, the wire harness of the photovoltaic incoming line is butted to the electric energy meter 16. The electric energy meter 16 leads out the wire harness to the grid company grid-connected equipment. The electric energy of the photovoltaic is metered through the electric energy meter 16. Meanwhile, the shell 1 supports the mounting strip 15. The mounting strip 15 supports the electric energy meter 16 and provides stable supporting force for the electric energy meter 16. In this way, the shell 1 can play a shell protection operation for the outside of the electric energy meter 16.

[0041] Secondly, when the present application carries out the fixed pressure positioning switching detection, the maintenance personnel opens the maintenance lower door 14 and the maintenance upper door 13 during the maintenance, and then the electric quantity meter 16 can be maintained, and when the maintenance is completed, the maintenance upper door 13 and the maintenance lower door 14 are closed, and when the maintenance personnel does not close the maintenance upper door 13 and the maintenance lower door 14, the maintenance personnel is far away from the shell 1. The maintenance upper door 13 drives the inductive block 33 to extrude the extrusion sleeve plate 34, and the maintenance lower door 14 drives another inductive block 33 to extrude the extrusion sleeve plate 34, the extrusion sleeve plate 34 is forced to slide along the outer wall of the guide column 35 to the left, and at the same time, the extrusion sleeve plate 34 extrudes the positioning pressure sensor 36, and the positioning pressure sensor 36 can sense the pressure of the extrusion sleeve plate 34. When the pressure value sensed by the positioning pressure sensor 36 is lower than the pressure value set by the controller 19.

[0042] At the same time, the controller 19 starts the displacement motor 18, and the displacement motor 18 drives the rotating sleeve plate 31 to rotate counterclockwise by one hundred and eighty degrees and then rotate clockwise by one hundred and eighty degrees, and the displacement motor 18 drives the rotating sleeve plate 31 to rotate forward and backward, and the rotating sleeve plate 31 drives the distance sensor 32 to rotate forward and backward, and the distance sensor 32 can sense the distance of the inductive block 33, and at the same time, the distance sensor 32 can also sense the distance of another inductive block 33. When the distance value sensed by the distance sensor 32 is different from the positioning distance set by the controller 19, the maintenance upper door 13 and the maintenance lower door 14 are not tightly closed with the shell 1, so that the maintenance upper door 13 and the maintenance lower door 14 can timely know that they are not tightly closed.

[0043] Then, when the present application carries out personnel identification, the controller 19 continues to start the driving motor 17, and the driving motor 17 drives the rotating rod 20 to rotate counterclockwise by ninety degrees, and the rotating rod 20 drives the sleeved rotating block 21 to rotate counterclockwise by ninety degrees, and the shell 1 supports the support 23, the support 23 supports the angle sensor 22, the sleeved rotating block 21 drives the arc-shaped groove rail 24 to rotate counterclockwise by ninety degrees, the arc-shaped groove rail 24 drives the support block 29 to rotate counterclockwise by ninety degrees, the support block 29 drives the linkage motor 28 to rotate counterclockwise by ninety degrees, and the linkage motor 28 drives the belt pulley 26 to rotate counterclockwise by ninety degrees. At the same time, the belt pulley 26 drives the transmission belt 27 to rotate counterclockwise by ninety degrees, the transmission belt 27 drives the infrared sensor 30 to rotate counterclockwise by ninety degrees, and the angle sensor 22 senses the angle of the rotating rod 20. When the angle value sensed by the angle sensor 22 is the same as the ninety-degree value set by the controller 19, the controller 19 closes the driving motor 17.

[0044] At the same time, the linkage motor 28 is started, the linkage motor 28 drives the belt pulley 26 to rotate forward, the belt pulley 26 rotates forward inside the slip ring 25, the belt pulley 26 drives the transmission belt 27 to drive forward, the transmission belt 27 slides along the inner wall of the arc-shaped groove rail 24, and the transmission belt 27 makes the infrared sensor 30 arc-shaped right move along the inner wall of the arc-shaped groove rail 24. Then the linkage motor 28 drives the belt pulley 26 to rotate reversely, the belt pulley 26 drives the transmission belt 27 to drive reversely, and the transmission belt 27 drives the infrared sensor 30 to arc-shaped left move along the inner wall of the arc-shaped groove rail 24. With the linkage motor 28 continuously driving forward and reversely, the infrared sensor 30 can be arc-shaped reciprocating displacement recognition, when the infrared sensor 30 does not recognize personnel, the sensing end of the infrared sensor 30 is not shielded, so it is known that there is no maintenance personnel outside the shell 1, and it is known that the maintenance personnel is far away and the maintenance upper door 13 and the maintenance lower door 14 are not tightly closed.

[0045] Finally, when the linkage force is applied, the controller 19 starts the speed reducer motor 9, the speed reducer motor 9 drives the screw rod 7 to rotate inside the sleeve frame 8, the screw rod 7 carries the sleeve block 6 to move left under the action of the threaded transmission force, the sleeve block 6 drives the rack 5 to move left, the rack 5 makes the gear 4 rotate clockwise, the gear 4 drives the rotating shaft 3 to rotate clockwise, the rotating shaft 3 rotates clockwise inside the sleeve block 2, the rotating shaft 3 simultaneously drives the two sleeve plates 10 to rotate clockwise, the sleeve plate 10 drives the sleeve strip 11 to rotate clockwise, the sleeve strip 11 makes the auxiliary pressure sensor 12 rotate clockwise, one auxiliary pressure sensor 12 is pressed on the outer wall of the maintenance upper door 13, and the other auxiliary pressure sensor 12 is pressed on the maintenance lower door 14. When the two auxiliary pressure sensors 12 sense the pressing value is the pressure value set by the controller 19, the maintenance lower door 14 and the maintenance upper door 13 are not tightly closed. At the same time, the pressure value sensed by the positioning pressure sensor 36 is the same as the pressure value set by the controller 19, and the distance value sensed by the distance sensor 32 on the two sensing blocks 33 is the same as the distance value set by the controller 19, so the controller 19 is closed, and the speed reducer motor 9 is closed at the same time. In this way, according to the specified pressure, the maintenance upper door 13 and the maintenance lower door 14 can tightly close the shell 1.

[0046] The contents not described in detail in the specification all belong to the prior art known to those skilled in the art, and the model parameters of various electrical appliances are not specifically limited, and conventional equipment can be used. In the technical solution, the electrical appliance control elements not mentioned belong to the prior art, so they are not shown in the figure, and will not be described here.

[0047] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A kind of electric energy metering box for photovoltaic, including shell, sleeve block and pivot, the sleeve block is fixedly connected in the shell one side, the pivot is rotatably connected in the sleeve block inner wall, it is characterized by: The upper part of the sleeve block is provided with a linkage constant force mechanism; The linkage constant force mechanism comprises two sleeve plates fixedly arranged above the sleeve block, both of which are fixedly connected with the rotating shaft, and a gear is arranged between the two sleeve plates and fixedly connected with the rotating shaft; The outer wall of the gear is meshingly connected with a rack, and the bottom end of the rack is fixedly connected with a sleeve block, the inner wall of the sleeve block is threadedly connected with a screw rod, the outer wall of the sleeve block is slidably connected with a sleeve frame, the sleeve frame is fixedly connected with the housing, and one end of the sleeve frame is fixedly connected with a speed reducer motor, which is used to drive the screw rod to rotate; One end of each sleeve plate is fixedly connected with a sleeve strip, and an auxiliary pressure sensor is fixedly connected inside the sleeve strip; The other side of the housing is provided with a drive motor, and the output end of the drive motor is provided with a personnel identification mechanism; The upper part of the drive motor is provided with a displacement motor, and the output end of the displacement motor is provided with a constant pressure positioning switching detection assembly; The constant pressure positioning switching detection assembly comprises a rotating sleeve plate fixedly arranged on the outer wall of the displacement motor; The displacement motor is fixedly connected with the housing, and the inner wall of the rotating sleeve plate is fixedly connected with a distance sensor; One side of the distance sensor is provided with two induction blocks, one side of the induction block is fixedly connected with an upper maintenance door, and the other side of the induction block is fixedly connected with a lower maintenance door, and the upper maintenance door and the lower maintenance door are hingedly connected with the housing; One side of the rotating sleeve plate is provided with an extrusion sleeve plate, the inner wall of the extrusion sleeve plate is slidably connected with a guide column, the guide column is fixedly connected with the housing, the top end of the guide column is fixedly connected with a positioning pressure sensor, and the output end of the positioning pressure sensor is fixedly connected with the extrusion sleeve plate, and the positioning pressure sensor is used to sense the extrusion force of the extrusion sleeve plate.

2. The electric energy metering box for photovoltaic applications according to claim 1, characterized in that: The two sleeve plates are symmetrically arranged about the gear, and the cross-sectional shape of the rack is concave.

3. The electric energy metering box for photovoltaic applications according to claim 1, characterized in that: The output end of the speed reducer motor is fixedly connected with the screw rod, the outer wall of the sleeve block is slidably connected with the sleeve frame, and the inner walls of the sleeve block and the sleeve frame are smooth surfaces.

4. The electric energy metering box for photovoltaic applications according to claim 1, characterized in that: The inner wall of the housing is fixedly connected with two mounting strips on one side, and the side of the mounting strip is fixedly mounted with an electric quantity meter.

5. The electric energy metering box for photovoltaic applications according to claim 1, characterized in that: One side of the displacement motor is provided with a controller, and the controller is fixedly connected with the housing.

6. The electric energy metering box for photovoltaic applications according to claim 1, characterized in that: The personnel identification mechanism comprises a rotating rod fixedly arranged on the output end of the drive motor; The outer wall of the rotating rod is fixedly connected with a sleeve rotating block, one end of the rotating rod is fixedly connected with an angle sensor, one side of the outer wall of the angle sensor is provided with a support, and the housing and the angle sensor are fixedly connected with the support; The bottom end of the sleeve rotating block is fixedly connected with an arc-shaped groove rail, and one side of the arc-shaped groove rail is fixedly connected with two slip rings, the inside of each slip ring is rotatably connected with a belt pulley, both the belt pulleys are rotatably connected with the arc-shaped groove rail, the outer wall of the belt pulley is drivingly connected with a transmission belt, and the transmission belt is slidably connected with the arc-shaped groove rail. One end of one of the pulleys is fixedly connected with a linkage motor, an upper surface of the linkage motor is provided with a supporting block, the sleeve joint rotating block and the linkage motor are fixedly connected with the supporting block, an outer wall of the transmission belt is fixedly connected with an infrared sensor, and the infrared sensor is slidably connected with the arc-shaped groove rail.

7. The electric energy metering box for photovoltaic applications according to claim 6, characterized in that: Vertical section shapes of the arc-shaped groove rail and the two pulleys are circular, and the transmission belt is made of rubber.

8. The electric energy metering box for photovoltaic applications according to claim 6, characterized in that: The supporting block is used for supporting the linkage motor, and the linkage motor is used for driving the pulley to rotate.

9. The electric energy metering box for photovoltaic applications according to claim 1, characterized in that: The two induction blocks are symmetrically arranged about the guide column, and vertical section shapes of the two induction blocks are rectangular.

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