A line-off-proof intelligent electric energy meter

Abstract

The present invention relates to the technical field of electric energy meters, and discloses a line-proof intelligent electric energy meter, comprising an electric energy meter body, a wiring slot being provided on the electric energy meter body, a protective cover being provided in the wiring slot, a positioning block being fixed on the protective cover, a positioning slot being provided on the positioning block, a mounting seat being fixed on the electric energy meter body, a positioning plug-in block adapted to the positioning slot being provided in the mounting seat, a sliding rod being fixed at one end of the positioning plug-in block, the sliding rod being elastically connected to the mounting seat through a first spring, and a positioning hole being provided on the positioning plug-in block; criminals can be confused by the second knob screw and the first knob screw being provided at the same time, because the criminals cannot know the number of rotations of the first knob screw or the second knob screw, and cannot open the protective cover, so that the purpose of only the staff being able to open the protective cover can be achieved, thereby greatly improving the protection effect of the electric energy meter body.

Description

Technical Field

[0001] The invention relates to the technical field of electric energy meters, in particular to a line-off-proof intelligent electric energy meter. Background Art

[0002] Smart energy meters can be divided into single-phase meters and three-phase meters. Single-phase meters are mainly used in homes and small commercial places, while three-phase meters are suitable for industrial and large commercial applications. These meters can perform two-way billing and support multiple rate metering, providing greater flexibility and convenience. In addition, smart meters also support remote meter reading, prepayment and remote power on and off functions, which enable power companies to manage power networks more effectively and provide users with more autonomy. With the development of technology, smart meters have supported multiple communication methods, such as 4G, NB-IoT, LoRaWAN, Bluetooth and WiFi. These communication methods enable meter data to be uploaded to the cloud in real time. Users can check the power consumption at any time through mobile phones or computers, realizing intelligent management and monitoring of power use. The application of smart meters is not limited to power metering and charging. It can also monitor the operation status of the power grid, power quality and environmental parameters in real time, and support smart power consumption services.

[0003] At present, some smart electricity meters with line anti-detachment function are equipped with a protective cover, which is mainly used to protect the internal structure and data of the electricity meter, and at the same time plays a decorative and aesthetic role. The cover usually adopts an integrated design, including a cover and side covers arranged on both sides of the cover and integrated with the cover. Each side cover has a protrusion with an integral structure on the inner side, and the cover can be stuck on the protrusion, which makes it convenient to open the protective cover. When in use, you only need to open the protective cover at the wiring terminal to connect the powered cable to the smart electricity meter. This makes it easy for lawless elements to directly open the protective cover and connect the wires to the smart electricity to steal electricity, causing losses. Summary of the invention

[0004] The present invention provides a line-proof smart electric energy meter, which has a second knob screw and a first knob screw that can confuse criminals. Since the criminals cannot know the number of rotations of the first knob screw or the second knob screw, they cannot open the protective cover plate, thereby improving the beneficial effect of protection effect. The invention solves the problem that the cover plate mentioned in the above background technology usually adopts an integrated design, including a cover plate and side covers that are arranged on both sides of the cover plate and are integral with the cover plate, each side cover has a protrusion that is integral with the cover plate on the inner side, and the cover plate can be stuck on the protrusion, which makes it convenient to open the protective cover plate. When in use, only the protective cover plate of the wiring terminal needs to be opened to connect the powered cable to the smart electric energy meter. In this way, it is easy for criminals to directly open the protective cover plate and connect the wire to the smart electric energy to steal electricity, causing losses.

[0005] The present invention provides the following technical solution: a line-proof intelligent electric energy meter, comprising an electric energy meter body, a wiring slot is provided on the electric energy meter body, a protective cover is provided in the wiring slot, a positioning block is fixed on the protective cover, a positioning slot is provided on the positioning block, a mounting seat is fixed on the electric energy meter body, a positioning plug adapted to the positioning slot is provided in the mounting seat, a sliding rod is fixed to one end of the positioning plug, the sliding rod is elastically connected to the mounting seat through a first spring, and a positioning hole is provided on the positioning plug;

[0006] A mounting plate is provided in the mounting seat, a first mounting plate and a second mounting plate are fixed above the mounting plate, a first positioning pin adapted to the positioning hole is fixed on both the first mounting plate and the second mounting plate, and the first mounting plate is elastically connected to the mounting seat via a second spring.

[0007] As an optional solution of the line-proof smart electric energy meter described in the present invention, a plurality of equally spaced wiring blocks are arranged in the wiring slot, the wiring block is fixed on the electric energy meter body, a first conductive sheet is fixed in the wiring block, two locking screws are threadedly connected to the wiring block, and a plurality of threading holes are opened on the bottom surface of the wiring slot.

[0008] As an optional solution of the line-proof smart electric energy meter described in the present invention, two guide rods are fixed on the electric energy meter body, two guide plates are fixed on the protective cover plate, and the guide plates are elastically connected to the guide rods through a third spring.

[0009] As an optional solution of the line-proof smart electric energy meter described in the present invention, the mounting plate is respectively fixed with a first interference wedge and a second interference wedge, and the mounting seat is respectively threaded with a first knob screw and a second knob screw, the first knob screw is in conflict with the first interference wedge, and the second knob screw is in conflict with the second interference wedge.

[0010] As an optional solution of the line-proof smart electric energy meter described in the present invention, scale lines are provided on both the first knob screw and the second knob screw, and the diameter of the second knob screw is larger than the diameter of the first knob screw.

[0011] As an optional solution of the line-proof smart electric energy meter described in the present invention, a sleeve is fixed on one side of the mounting seat, the sliding rod is inserted in the sleeve, and a circular hollow block is fixed on the end of the sliding rod, a second positioning pin and a third positioning pin are respectively provided on the circular hollow block, a plurality of wedge-shaped positioning rings are fixed on the inner wall of the sleeve, the second positioning pin is elastically connected to the circular hollow block through a fourth spring, and the third positioning pin is elastically connected to the circular hollow block through a fifth spring.

[0012] As an optional solution of the line-proof smart electric energy meter described in the present invention, the second positioning pin is provided with an interference inclined groove, a connecting bracket is fixed to one side of the third positioning pin, and a magnetic column is fixed to the connecting bracket.

[0013] As an optional solution of the line-proof smart electric energy meter described in the present invention, a rectangular rod is inserted into the circular hollow block, a resistance piece is fixed at the end of the rectangular rod, a circular groove is opened on the upper surface of the rectangular rod, and a strong magnet is fixed in the circular groove.

[0014] As an optional solution of the line-proof smart electric energy meter described in the present invention, a second conductive sheet is provided on one side of the first conductive sheet, the second conductive sheet is elastically connected to the electric energy meter body through a sixth spring, an L-shaped abutment frame is slidably connected to the electric energy meter body, one end of the L-shaped abutment frame abuts against the second conductive sheet, and a seventh spring is connected between the L-shaped abutment frame and the electric energy meter body.

[0015] As an optional solution of the line-proof smart electric energy meter described in the present invention, a seesaw is provided under the wiring slot, the seesaw is elastically connected to the electric energy meter body through a torsion spring, one end of the seesaw is in contact with the other end of the L-shaped contact frame, and a contact column is fixed under the protective cover.

[0016] The present invention has the following beneficial effects:

[0017] 1. In the line anti-dropout type intelligent electric energy meter, the two locking screws threadedly connected on several wiring blocks in the wiring slot can firmly fix the energized wire on the wiring block, so that the energized wire can be closely fitted with the first conductive sheet, thereby improving the anti-dropout effect; the protective cover plate slidably connected in the wiring slot can move up and down, and can protect several wiring blocks when closed; the positioning block fixed on the protective cover plate can move synchronously with the protective cover plate; the sliding rod elastically connected to the mounting seat can drive the positioning plug block to move horizontally on the electric energy meter body; when the protective cover plate is closed, the positioning plug block can be automatically inserted into the positioning groove on the positioning block under the action of elastic force, thereby facilitating the limiting of the protective cover plate; the first mounting plate can be elastically connected to the mounting seat through the second spring, so that the first positioning pins fixed on the first mounting plate and the second mounting plate can be automatically inserted into the positioning hole of the positioning plug block during the movement to limit it, thereby preventing lawless elements from easily removing the protective cover The plate is opened to steal electricity, and the first knob screw threadedly connected on the mounting seat can cooperate with the first interfering wedge fixed on the mounting plate, or the second interfering wedge cooperates with the second knob screw, so that the first knob screw or the second knob screw can respectively interfere with the first interfering wedge and the second interfering wedge when they are rotated a certain number of times, and the moving position of the mounting plate can be adjusted to make the positioning plug block located in the middle of the two first positioning pins. At the same time, the positioning plug block can be separated from the positioning hole, which is convenient for the staff to adjust the position of the positioning plug block to open the protective cover during the inspection of the electric energy meter body. The second knob screw and the first knob screw set at the same time can confuse the criminals. Even if they know that the first positioning pin can be disengaged from the positioning hole by rotating the first knob screw or the second knob screw, the criminals cannot open the protective cover because they cannot know the number of rotations of the first knob screw or the second knob screw, thereby improving the protection effect.

[0018] 2. In the line anti-dropping intelligent electric energy meter, the circular hollow block fixed at the end of the sliding rod can be synchronously moved to the inside of the casing as the positioning plug moves, so that the second positioning pin and the third positioning pin elastically connected in the circular hollow block can be stuck on one side of the wedge-shaped positioning ring fixed on the inner wall of the casing, which can limit the moving position of the sliding rod, further improve the firmness of the positioning plug stuck in the positioning block, and prevent the protective cover from being opened by lawless elements to steal electricity. The special rectangular rod can be inserted into the circular hollow block, so that the resistance piece fixed at the end of the rectangular rod can be driven to be inserted into the resistance inclined groove opened on the second positioning pin, so that the second positioning pin can be automatically retracted into the circular hollow block. At the same time, the strong magnet fixed in the circular notch of the rectangular rod can be close to the bottom of the connecting bracket and the magnetic suction column for magnetic suction, so that the third positioning pin can be automatically retracted into the circular hollow block. Even if the lawless elements steal electricity using the same tool, they do not have the magnetic suction function or do not know the specific position of the strong magnet, and they cannot open the protective cover;

[0019] 3. In the line-proof intelligent electric energy meter, when the second conductive sheet arranged in the electric energy meter body contacts the first conductive sheet, the purpose of power supply can be achieved. When the protective cover moves downward to close, it can drive the interference column to move synchronously, so as to achieve the purpose of the interference column and the seesaw to interfere with each other, so that one end of the seesaw can be tilted up and interfere with one end of the L-shaped interference frame, so that the L-shaped interference frame moves horizontally and interferes with the first conductive sheet, so as to promote the first conductive sheet to contact with the second conductive sheet, and facilitate the protective cover to contact with the second conductive sheet after resetting and closing, so as to achieve the purpose of power supply, so that when the criminals damage the protective cover, the power can be automatically cut off, and the protection performance of the electric energy meter body is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 The figure is a schematic diagram of the internal structure of the wiring slot of the smart electric energy meter of the present invention.

[0022] Figure 3 It is a schematic diagram of the internal structure of the mounting base of the present invention.

[0023] Figure 4 It is a cross-sectional view of the sleeve and circular hollow block structure of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the sleeve and the circular hollow block of the present invention.

[0025] Figure 6 It is a schematic diagram of the seesaw structure of the present invention.

[0026] Figure 7 for Figure 4 A partial enlarged schematic diagram in the middle.

[0027] Figure 8 It is a schematic diagram of the positioning block structure of the present invention.

[0028] In the figure: 1, electric energy meter body; 2, wiring slot; 3, protective cover; 4, positioning block; 5, positioning slot; 6, mounting seat; 7, positioning plug; 8, positioning hole; 9, sliding rod; 10, first spring; 11, mounting plate; 12, first mounting plate; 13, second mounting plate; 14, first positioning pin; 15, second spring; 16, wiring block; 161, threading hole; 17, first conductive plate; 18, locking screw; 19, guide rod; 20, guide plate; 21, third spring; 22, first abutting wedge; 23, second abutting wedge; 24 , the first knob screw; 25, the second knob screw; 26, the scale line; 27, the sleeve; 28, the circular hollow block; 29, the second positioning pin; 30, the third positioning pin; 31, the wedge-shaped positioning ring; 32, the fourth spring; 33, the fifth spring; 34, the interference bevel; 35, the connecting bracket; 36, the magnetic column; 37, the rectangular rod; 38, the interference sheet; 39, the circular notch; 40, the strong magnet; 41, the second conductive sheet; 42, the sixth spring; 43, the L-shaped interference frame; 44, the seventh spring; 45, the seesaw; 46, the torsion spring; 47, the interference column. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] For example, see Figure 1-Figure 8 A line-proof intelligent electric energy meter comprises an electric energy meter body 1, a wiring slot 2 is provided on the electric energy meter body 1, a protective cover plate 3 is provided in the wiring slot 2, a positioning block 4 is fixed on the protective cover plate 3, a positioning slot 5 is provided on the positioning block 4, a mounting seat 6 is fixed on the electric energy meter body 1, a positioning plug 7 adapted to the positioning slot 5 is provided in the mounting seat 6, a sliding rod 9 is fixed at one end of the positioning plug 7, the sliding rod 9 is elastically connected to the mounting seat 6 through a first spring 10, and a positioning hole 8 is provided on the positioning plug 7;

[0031] A mounting plate 11 is provided in the mounting seat 6, and a first mounting piece 12 and a second mounting piece 13 are fixed above the mounting plate 11. A first positioning pin 14 adapted to the positioning hole 8 is fixed on the first mounting piece 12 and the second mounting piece 13. The first mounting piece 12 is elastically connected to the mounting seat 6 through a second spring 15.

[0032] A plurality of equally spaced wiring blocks 16 are provided in the wiring slot 2, the wiring block 16 is fixed on the electric energy meter body 1, a first conductive sheet 17 is fixed in the wiring block 16, two locking screws 18 are threadedly connected to the wiring block 16, and a plurality of threading holes 161 are provided on the bottom surface of the wiring slot 2.

[0033] Two guide rods 19 are fixed on the electric energy meter body 1 , and two guide pieces 20 are fixed on the protective cover plate 3 . The guide pieces 20 are elastically connected to the guide rods 19 via third springs 21 .

[0034] The mounting plate 11 is respectively fixed with a first abutting wedge 22 and a second abutting wedge 23 , and the mounting seat 6 is respectively threaded with a first knob screw 24 and a second knob screw 25 . The first knob screw 24 abuts against the first abutting wedge 22 , and the second knob screw 25 abuts against the second abutting wedge 23 .

[0035] Scale lines 26 are provided on both the first knob screw 24 and the second knob screw 25 , and the diameter of the second knob screw 25 is greater than the diameter of the first knob screw 24 .

[0036] When the electric energy meter body 1 is working, the input wire and the output wire are respectively inserted into a plurality of equally spaced wiring blocks 16 through the threading holes 161. Figure 1-Figure 3By tightening the locking screw 18 threadedly connected on the wiring block 16, the locking screw 18 can be used to firmly fix the wire on the first conductive sheet 17. The two guide sheets 20 slide on the two guide rods 19 under the elastic force of the third spring 21, prompting the protective cover 3 to move downward to close the wiring slot 2 to prevent the wiring block 16 from being exposed to the air. At the same time, the positioning block 4 fixed on the protective cover 3 also moves downward synchronously. When the positioning slot 5 of the positioning block 4 and the positioning plug 7 are at the same horizontal position, the sliding rod 9 drives the positioning plug 7 to be automatically inserted into the positioning slot 5 under the elastic force of the first spring 10, thereby achieving the purpose of limiting the protective cover 3 and preventing the protective cover 3 from being opened by lawless elements. At the same time, the first mounting piece 12 By elastically connecting the second spring 15 with the mounting seat 6, the first positioning pin 14 fixed on the first mounting piece 12 can be urged to always abut against the positioning plug 7. When the positioning plug 7 is moved and inserted into the positioning groove 5, the first positioning pin 14 can be automatically inserted into the positioning plug 7 when encountering the positioning hole 8, so as to achieve the purpose of limiting the positioning plug 7 and prevent criminals from easily opening the protective cover 3 to steal electricity. When the staff needs to open the protective cover 3, they can choose to rotate the second knob screw 25 threadedly connected on the mounting seat 6 or the first knob screw 24 threadedly connected on the mounting seat 6. If the second knob screw 25 is selected, the second knob screw 25 can be accurately controlled by rotating it a few times in cooperation with the scale line 26 on the second knob screw 25. The moving distance of 25 makes the second knob screw 25 come into conflict with the second conflicting wedge 23 fixed on the mounting plate 11, prompting the mounting plate 11 to move upward, and the second spring 15 accumulates force, so that the first positioning pin 14 fixed on the first mounting plate 12 moves a distance from the positioning hole 8, and the first conflicting wedge 22 also moves a distance synchronously. If the first knob screw 24 threadedly connected to the rotating mounting seat 6 is selected, the moving distance of the first knob screw 24 can be accurately controlled by rotating a few circles of the scale line 26 set on the first knob screw 24, so that the first knob screw 24 comes into conflict with the first conflicting wedge 22 fixed on the mounting plate 11, and the second spring 15 continues to accumulate force, which can continue to prompt the mounting plate 11 to move upward. The first locating pin 14 fixed on the first mounting plate 12 is disengaged from the locating hole 8, and the first locating pin 14 fixed on the second mounting plate 13 is also gradually close to the locating hole 8. At this time, the locating plug 7 is located in the middle of the two first locating pins 14, which is convenient for the staff to adjust the position of the locating plug 7 to open the protective cover 3 during work. The second knob screw 25 and the first knob screw 24 provided at the same time can confuse criminals. Even if they know that the first locating pin 14 can be disengaged from the locating hole 8 by rotating the first knob screw 24 or the second knob screw 25, the criminals cannot know the number of rotations of the first knob screw 24 and the second knob screw 25, and cannot open the protective cover 3, thereby improving the protection effect.

[0037] When the diameter of the second knob screw 25 is greater than the diameter of the first knob screw 24, the distances moved by the second knob screw 25 and the first knob screw 24 when they rotate one circle are different, and the number of circles rotated by the second knob screw 25 and the first knob screw 24 when working are different, making it impossible for criminals to figure out the number of circles rotated by the first knob screw 24 and the second knob screw 25, and unable to easily open the protective cover 3 to steal electricity.

[0038] Embodiment 2: This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1-Figure 8 A sleeve 27 is fixed on one side of the mounting seat 6, the sliding rod 9 is inserted in the sleeve 27, and a circular hollow block 28 is fixed on the end of the sliding rod 9, and a second locating pin 29 and a third locating pin 30 are respectively provided on the circular hollow block 28. A plurality of wedge-shaped locating rings 31 are fixed on the inner wall of the sleeve 27, the second locating pin 29 is elastically connected to the circular hollow block 28 through a fourth spring 32, and the third locating pin 30 is elastically connected to the circular hollow block 28 through a fifth spring 33.

[0039] The second positioning pin 29 is provided with an oblique interference groove 34 . A connecting bracket 35 is fixed to one side of the third positioning pin 30 , and a magnetic column 36 is fixed to the connecting bracket 35 .

[0040] A rectangular rod 37 is inserted into the circular hollow block 28 , a resisting piece 38 is fixed to the end of the rectangular rod 37 , a circular notch 39 is formed on the upper surface of the rectangular rod 37 , and a strong magnet 40 is fixed in the circular notch 39 .

[0041] In order to further improve the safety of the closed protective cover 3 and prevent it from being opened by lawless elements to steal electricity, refer to Figure 4-Figure 7, through the sleeve 27 fixed on one side of the mounting seat 6, when the positioning plug block 7 is horizontally moved and inserted into the positioning groove 5 on the positioning block 4, the sliding rod 9 drives the circular hollow block 28 to move synchronously to the inside of the sleeve 27, so that the second positioning pin 29 and the third positioning pin 30 elastically connected in the circular hollow block 28 can be retracted into the circular hollow block 28 at the same time after contacting with the wedge-shaped positioning ring 31, and reset after the conflict is released, and get stuck on one side of the wedge-shaped positioning ring 31, so as to achieve the purpose of limiting the circular hollow block 28, thereby limiting the moving position of the sliding rod 9, further improving the firmness of the positioning plug block 7 stuck in the positioning block 4, and preventing the protective cover 3 from being opened by lawless elements to steal electricity. When the staff needs to open the protective cover 3, they also need to use a special rectangular rod 37 to insert it into the circular hollow block 28, thereby driving the resistance piece 38 fixed at the end of the rectangular rod 37 to be inserted into the resistance inclined groove 34 opened on the second positioning pin 29, and the fourth spring 32 accumulates force to cause the second positioning pin 29 to retract into the circular hollow block 28, and the resistance to the wedge-shaped positioning ring 31 can be released. At the same time, the strong magnet 40 fixed in the circular notch 39 of the rectangular rod 37 can be close to the bottom of the connecting bracket 35 and the magnetic suction column 36 in the circular notch 39 for magnetic attraction. The fifth spring 33 accumulates force to cause the third positioning pin 30 to automatically retract into the circular hollow block 28, and the resistance to the wedge-shaped positioning ring 31 can be released. When the rectangular rod 37 is pulled, the circular hollow block 28 can be detached from the sleeve 27. Even if the criminals use the same tool with magnetic attraction function to steal electricity, they do not know the specific position of the strong magnet 40 and cannot open the protective cover 3.

[0042] Embodiment 3: This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1-Figure 8 A second conductive sheet 41 is provided on one side of the first conductive sheet 17, and the second conductive sheet 41 is elastically connected to the electric energy meter body 1 through a sixth spring 42. An L-shaped abutment frame 43 is slidably connected to the electric energy meter body 1, and one end of the L-shaped abutment frame 43 abuts against the second conductive sheet 41, and a seventh spring 44 is connected between the L-shaped abutment frame 43 and the electric energy meter body 1.

[0043] A seesaw 45 is provided below the wiring slot 2 , and the seesaw 45 is elastically connected to the electric energy meter body 1 through a torsion spring 46 . One end of the seesaw 45 abuts against the other end of the L-shaped abutment frame 43 , and an abutment column 47 is fixed below the protective cover 3 .

[0044] When the second conductive sheet 41 disposed in the electric energy meter body 1 contacts the first conductive sheet 17, the purpose of power supply can be achieved. Figure 2 and Figure 6When the protective cover 3 moves downward to close, the contact column 47 can be driven to move synchronously, so that the contact column 47 can be in contact with the seesaw 45, so that one end of the seesaw 45 can be tilted up and contact with one end of the L-shaped contact frame 43, and at the same time, the torsion spring 46 accumulates force, and the L-shaped contact frame 43 moves horizontally when it is in contact. At the same time, the seventh spring 44 accumulates force, so that the other end of the L-shaped contact frame 43 can be in contact with the first conductive sheet 17, so that the first conductive sheet 17 moves and contacts with the second conductive sheet 41, and the sixth spring 42 accumulates force, so that the second conductive sheet 41 can contact with the first conductive sheet 17 after the protective cover 3 is reset and closed, thereby achieving the purpose of power supply, so that when the criminals cannot open the protective cover 3 and damage the protective cover 3 to steal electricity, the second conductive sheet 41 can be released from contact with the first conductive sheet 17 to automatically cut off the power, thereby further improving the protection performance of the electric energy meter body 1 against electricity theft.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A line-off-proof smart electric energy meter, comprising an electric energy meter body (1), characterized in that: The electric energy meter body (1) is provided with a wiring slot (2), a protective cover plate (3) is provided in the wiring slot (2), a positioning block (4) is fixed on the protective cover plate (3), a positioning slot (5) is provided on the positioning block (4), a mounting seat (6) is fixed on the electric energy meter body (1), a positioning plug (7) adapted to the positioning slot (5) is provided in the mounting seat (6), a sliding rod (9) is fixed at one end of the positioning plug (7), the sliding rod (9) is elastically connected to the mounting seat (6) via a first spring (10), and a positioning hole (8) is provided on the positioning plug (7); A mounting plate (11) is arranged inside the mounting seat (6), a first mounting piece (12) and a second mounting piece (13) are fixed above the mounting plate (11), a first positioning pin (14) adapted to the positioning hole (8) is fixed to the first mounting piece (12) and the second mounting piece (13), and the first mounting piece (12) is elastically connected to the mounting seat (6) via a second spring (15); A plurality of equally spaced wiring blocks (16) are arranged in the wiring slot (2); the wiring block (16) is fixed to the electric energy meter body (1); a first conductive sheet (17) is fixed in the wiring block (16); two locking screws (18) are threadedly connected to the wiring block (16); and a plurality of threading holes (161) are provided on the bottom surface of the wiring slot (2); Two guide rods (19) are fixed on the electric energy meter body (1), and two guide plates (20) are fixed on the protective cover plate (3), and the guide plates (20) are elastically connected to the guide rods (19) via a third spring (21); The mounting plate (11) is respectively fixed with a first abutting wedge (22) and a second abutting wedge (23); the mounting seat (6) is respectively threadedly connected with a first knob screw (24) and a second knob screw (25); the first knob screw (24) abuts against the first abutting wedge (22), and the second knob screw (25) abuts against the second abutting wedge (23); The first knob screw (24) and the second knob screw (25) are both provided with scale lines (26), and the diameter of the second knob screw (25) is larger than the diameter of the first knob screw (24); A sleeve (27) is fixed on one side of the mounting seat (6), the sliding rod (9) is inserted into the sleeve (27), and a circular hollow block (28) is fixed on the end of the sliding rod (9), a second positioning pin (29) and a third positioning pin (30) are respectively provided on the circular hollow block (28), a plurality of wedge-shaped positioning rings (31) are fixed on the inner wall of the sleeve (27), the second positioning pin (29) is elastically connected to the circular hollow block (28) via a fourth spring (32), and the third positioning pin (30) is elastically connected to the circular hollow block (28) via a fifth spring (33).

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