A metering box with high toughness, high protection and effective protection against magnetic field interference

Abstract

The present invention belongs to the field of electric power equipment, and specifically, is a meter box with high toughness, high protection and effective protection against magnetic field interference, comprising a meter box body, a cover plate rotatably connected to the front end of the meter box body, a groove is provided at a position close to the rear end of the meter box body, an anti-collision strip is fixedly connected to the groove, two groups of reinforcing plates are fixedly connected to the left and right sides of the inner wall of the meter box body, a protective mechanism is arranged inside the reinforcing plate, the protective mechanism is used to improve the impact resistance of the meter box body, so as to improve the protection strength of the meter box body, a supporting mechanism is arranged at the rear end of the cover plate, the supporting mechanism is used to transfer the impact force on one side of the meter box body to the other side of the meter box body; through the structural design of the protective mechanism, the impact resistance of the meter box body is improved, and while meeting the high toughness, it can also have the characteristics of high protection, so as to better protect the electric power instruments inside the meter box body.

Description

Technical Field

[0001] The present invention relates to the field of electric power equipment, and in particular to a metering box with high toughness, high protection and effective protection against magnetic field interference. Background Art

[0002] The meter box is a combination of measuring instruments and auxiliary equipment. It is widely used in laboratories, production lines, substations and other places. It can measure various parameters of electric energy. The meter box shell can protect the normal operation of the internal power instruments. Therefore, it needs to have high toughness, high protection and the ability to effectively prevent magnetic field interference.

[0003] According to the patent document CN202411044926.0, a metering box proposed, the key points of its technical solution are that it includes a box body, a wiring slot is provided on the box body, a socket is provided in the wiring slot, a wiring terminal is provided on one side of the socket, and a wire insertion hole is provided on the other side, a plurality of groups of notched slots are provided on the socket, each notched slot is hingedly provided with a fastener, a first control member is provided on one side of the wiring port located in the box body, and a second control member is provided on the other side, the second control member includes a rotating seat and a pushing block, a linkage slot is provided on the box body, the rotating seat is movably connected to the box body, and the pushing block is provided in multiple groups, and all are provided at one end of the rotating seat; a first linkage structure and a second linkage structure are provided on the fastener, and the linkage slot is divided into a first stroke segment, a second stroke segment, a third stroke segment and a fourth stroke segment according to the "mouth" structure. The metering box can fix the external wires to avoid pulling out the wires outside the box body, thereby ensuring the safety of the equipment.

[0004] However, for the meter box in the above technology, for the meter box with a plastic shell, although the shell has the characteristic of high toughness, the overall strength of the plastic material is low, and the meter box has poor impact resistance. After being subjected to a large impact, the surface of the meter box may be damaged, resulting in its ability to protect the internal electrical instruments being reduced. Therefore, in order to solve the above problem, a meter box with high toughness, high protection and effective protection against magnetic field interference is proposed. Summary of the Invention

[0005] In order to solve the problem of the meter box in the above technology, for the meter box with a plastic shell, although the shell has the characteristic of high toughness, the overall strength of the plastic material is low, and the meter box has poor impact resistance. After being subjected to a large impact, the surface of the meter box may be damaged, resulting in its ability to protect the internal power instruments. The present invention proposes a meter box with high toughness, high protection and effective protection against magnetic field interference.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the meter box with high toughness, high protection and effective anti-magnetic field interference described in the present invention includes a meter box main body, the front end of the meter box main body is rotatably connected to a cover plate, the meter box main body is provided with a groove near the rear end, the groove is fixedly connected to an anti-collision strip, and two groups of reinforcing plates are fixedly connected on the left and right sides of the inner wall of the meter box main body, and a protective mechanism is provided inside the reinforcing plate, and the protective mechanism is used to improve the impact resistance of the meter box main body so as to improve the protection strength of the meter box main body, and the rear end of the cover plate is provided with a support mechanism, and the support mechanism is used to transfer the impact force on one side of the meter box main body to the other side of the meter box main body, so as to further improve the impact resistance of the meter box main body through the overall structure of the meter box main body, and the inside of the meter box main body is provided with an anti-magnetic component, and the anti-magnetic component is used to improve the anti-magnetic field interference ability of the meter box main body, so as to better protect the electrical instruments inside the meter box main body.

[0007] Preferably, the protective mechanism includes multiple groups of first springs, which are fixedly connected to the inner wall of the metering box body, and the metering box body is made of plastic. The side of the first spring away from the inner wall of the metering box body is fixedly connected to the mounting shell, and the side of the mounting shell away from the first spring is in contact with the movable plate. The side of the movable plate is fixedly connected with multiple groups of protrusions, and the inside of the protrusions is provided with a column, and the column is fixedly connected to the inner wall of the reinforcing plate. The reinforcing plate is made of plastic, and the side of the movable plate away from the mounting shell is fixedly connected with a support spring, and the side of the support spring away from the movable plate is fixedly connected to the inner wall of the reinforcing plate.

[0008] The lifting post has a hole that is provided on the metal sleeve and the fixing block is fixed with the fixing block, and the fixing block is rotatably connected to the fixing rod on the side away from the connecting block, and the fixing rod is in contact with the moving block on the side away from the fixing block. The moving block is provided with two groups, and the two groups of moving blocks are inserted in the fixing block, and the two groups of moving blocks are fixedly connected to the left and right sides of the connecting column, the connecting column passes through the fixing block, and the fixing block is fixedly connected to the supporting block, and the rear end of the supporting block is provided with a fixing groove corresponding to the fixing block and the fixing rod, and the supporting block is fixedly connected to the rear end of the cover plate, and the connecting column is close to the moving block. A second spring is sleeved on the side, and the two sides of the second spring are fixedly connected to the moving block and the fixed block respectively.

[0009] Preferably, the anti-magnetic component includes a metal plate, which is fixedly connected to the inside of the metering box body, the left and right sides of the metal plate are both fitted with the reinforcing plate, the front end of the metal plate is in contact with the rear end of the metal sleeve, the metal sleeve is inserted into the inside of the metering box body, the left and right sides of the metal sleeve are both fitted with the reinforcing plate, the top and bottom ends of the metal sleeve and the metal plate are both fitted with the inner wall of the metering box body, the front end of the metal sleeve is fitted with the rear end of the cover plate, and the cover plate, metal sleeve and metal plate are all made of stainless steel.

[0010] Preferably, two sets of mounting plates are fixedly connected to the left and right sides of the metal casing, the mounting plates are slidably connected to the mounting slots, the mounting slots are opened on the reinforcing plate, and the mounting plates and the mounting slots are both trapezoidal in design.

[0011] Preferably, a plurality of groups of positioning posts are fixedly connected to the rear end of the metal housing, and the positioning posts are inserted into the interior of the metal plate, and the metal plate is provided with holes corresponding to the positioning posts.

[0012] Preferably, a sponge is fixedly connected to the inner wall of the reinforcing plate, and the sponge is close to the movable plate.

[0013] Preferably, a clamping column is fixedly connected to one side of the movable plate close to the mounting shell, the clamping column is inserted into the mounting shell, and a socket corresponding to the clamping column is provided on the mounting shell.

[0014] Preferably, a connecting rod is inserted into the middle of the connecting block, and the side of the connecting rod away from the fixed column is threadedly connected to the extension column, the extension column is fixedly connected to the movable plate, and a notch is provided on the fixed column.

[0015] Preferably, a card slot is provided at the rear end of the cover plate, and a rubber ring is fixedly connected to the inner wall of the card slot, and the rubber ring is made of rubber material.

[0016] The present invention is beneficial in that:

[0017] 1. The present invention improves the impact resistance of the meter box body through the structural design of the protective mechanism. While meeting the requirements of high toughness, it can also have the characteristics of high protection, so as to better protect the power instruments inside the meter box body. It solves the problem of the meter box in the prior art that, for the meter box with a plastic shell, although the shell has the characteristics of high toughness, the overall strength of the plastic material is low, and the impact resistance of the meter box is poor. After being subjected to a large impact, the surface of the meter box may be damaged, resulting in its poor protection capability for the internal power instruments.

[0018] 2. The present invention adopts the structural design of the support mechanism. When the cover is closed, the rear end of the cover will contact the two sets of fixed rods respectively through the two sets of moving blocks. When one side of the metering box body is impacted, the fixed rod will push the moving block in contact with it to move, thereby transmitting the impact force to the fixed rod on the other side through the moving block, thereby making full use of the overall structure of the metering box body to resist the impact on one side of the metering box body, so that the metering box body has better impact resistance and is not prone to deformation and damage when subjected to a large impact.

[0019] 3. The present invention adopts the structural design of the anti-magnetic component, in which the metal shell and the metal plate are spliced ​​together and inserted into the interior of the meter box body, which can improve the overall strength of the internal structure of the meter box body. The metal shell and the metal plate cooperate with the cover plate to form a complete metal shell, which can shield the magnetic field, so as to improve the ability of the meter box body to resist magnetic field interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 Schematic diagram of the installation structure of the anti-collision strip of the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0024] Figure 4 Schematic diagram of the connection structure of the cover plate of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the fixing block of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the reinforcement plate of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the connection block of the present invention;

[0028] Figure 8 Schematic diagram of the connection structure of the movable plate of the present invention;

[0029] Figure 9 It is a structural schematic diagram of the metal casing and metal plate of the present invention.

[0030] In the figure: 1. Metering box body; 20. Cover plate; 21. Reinforcement plate; 22. Metal shell; 23. Positioning column; 24. Mounting plate; 25. Metal plate; 26. Mounting groove; 27. Insert column; 28. Sponge; 29. ​​Bump; 30. Moving plate; 31. Mounting shell; 32. First spring; 33. Clamping column; 34. Extension column; 35. Connecting block; 36. Connecting rod; 37. Fixed column; 38. Fixed rod; 39. Notch; 40. Moving block; 41. Connecting column; 42. Fixed block; 43. Second spring; 44. Clamping slot; 45. Rubber ring; 46. Support block; 47. Anti-collision strip; 48. Groove; 49. Support spring. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention. Example

[0032] See also Figure 1 - Figure 9 As shown, a meter box with high toughness, high protection and effective anti-magnetic field interference, includes a meter box body 1, the front end of the meter box body 1 is rotatably connected to a cover plate 20, a groove 48 is provided on the meter box body 1 near the rear end, and an anti-collision strip 47 is fixedly connected to the groove 48, and two groups of reinforcing plates 21 are fixedly connected on the left and right sides of the inner wall of the meter box body 1, and a protective mechanism is provided inside the reinforcing plate 21, and the protective mechanism is used to improve the impact resistance of the meter box body 1, so as to improve the protective strength of the meter box body 1, and the rear end of the cover plate 20 is provided with a supporting mechanism, and the supporting mechanism is used to transfer the impact force on one side of the meter box body 1 to the other side of the meter box body 1, so as to further improve the impact resistance of the meter box body 1 through the overall structure of the meter box body 1, and an anti-magnetic component is provided inside the meter box body 1, and the anti-magnetic component is used to improve the anti-magnetic field interference capability of the meter box body 1, so as to better protect the power instruments inside the meter box body 1;

[0033] Furthermore, the protective mechanism includes multiple groups of first springs 32, which are fixedly connected to the inner wall of the metering box body 1. The metering box body 1 is made of plastic. The side of the first spring 32 away from the inner wall of the metering box body 1 is fixedly connected to the mounting shell 31, and the side of the mounting shell 31 away from the first spring 32 is in contact with the movable plate 30. The side of the movable plate 30 is fixedly connected to multiple groups of protrusions 29, and the interior of the protrusions 29 is inserted with a plug 27, and the plug 27 is fixedly connected to the inner wall of the reinforcing plate 21. The reinforcing plate 21 is made of plastic. The side of the movable plate 30 away from the mounting shell 31 is fixedly connected to a support spring 49, and the side of the support spring 49 away from the movable plate 30 is fixedly connected to the inner wall of the reinforcing plate 21.

[0034] Through the structural design of the protective mechanism, the impact resistance of the meter box body 1 is improved. While meeting the high toughness, it can also have the characteristics of high protection, so as to better protect the electrical instruments inside the meter box body 1. During operation, when one side of the meter box body 1 is impacted, since the meter box body 1 is made of plastic material, and reinforcing plates 21 are fixed on the left and right sides of the inner wall of the meter box body 1, the inner walls of the left and right sides of the meter box body 1 are thickened by the reinforcing plates 21 to improve the impact resistance of the meter box body 1. At the same time, the meter box body 1 can also have high toughness. The inner wall of the reinforcing plate 21 is connected to the movable plate 30 through the supporting spring 49. The supporting spring 49 supports the movable plate 30, which can ensure the normal movement of the movable plate 30 inside the reinforcing plate 21. The side of the movable plate 30 away from the support spring 49 is in contact with multiple sets of mounting shells 31, and the mounting shells 31 are connected to the inner wall of the meter box main body 1 through the first spring 32. The impact force received on the outside of the meter box main body 1 can be transmitted to the movable plate 30 in time through the multiple sets of mounting shells 31, thereby pushing the movable plate 30 to move inside the reinforcing plate 21, and the support spring 49 will be squeezed. Multiple sets of protrusions 29 are fixed on the movable plate 30, and the protrusions 29 are inserted with plugs 27. The protrusions 29 slide on the plugs 27 to support the movable plate 30 while guiding the movement of the movable plate 30. Since the power instruments are all installed on the meter box main body 1 near the rear end, an anti-collision strip 47 is provided at the corresponding position on the outside of the meter box main body 1 to improve the protection capability of the meter box main body 1.

[0035] Furthermore, the support mechanism includes a connecting block 35, one side of the connecting block 35 is inserted into the interior of the reinforcing plate 21, the side of the connecting block 35 inserted into the interior of the reinforcing plate 21 is in contact with the movable plate 30, the side of the connecting block 35 away from the movable plate 30 is in contact with the metal casing 22, and the metal casing 22 is provided with a through hole corresponding to the connecting block 35, and a fixing column 37 is fixedly connected to the connecting block 35, and a fixing rod 38 is rotatably connected to the side of the fixing column 37 away from the connecting block 35, and the side of the fixing rod 38 away from the fixing column 37 is in contact with the movable block 40, Two groups of movable blocks 40 are provided, and both groups of movable blocks 40 are inserted into the fixed block 42. The two groups of movable blocks 40 are fixedly connected to the left and right sides of the connecting column 41. The connecting column 41 passes through the fixed block 42, and the fixed block 42 is fixedly connected to the support block 46. The rear end of the support block 46 is provided with a fixing groove corresponding to the fixed block 42 and the fixing rod 38. The support block 46 is fixedly connected to the rear end of the cover plate 20. A second spring 43 is sleeved on the side of the connecting column 41 close to the movable block 40. The two sides of the second spring 43 are fixedly connected to the movable block 40 and the fixed block 42 respectively.

[0036] Through the structural design of the supporting mechanism, when the cover plate 20 is closed, the rear end of the cover plate 20 will contact the two sets of fixed rods 38 respectively through the two sets of moving blocks 40. When one side of the metering box body 1 is impacted, the fixed rod 38 will push the moving block 40 in contact with it to move, thereby transmitting the impact force to the fixed rod 38 on the other side through the moving block 40, thereby making full use of the overall structure of the metering box body 1 to resist the impact on one side of the metering box body 1, so that the metering box body 1 has better impact resistance and is not prone to deformation and damage when subjected to a large impact. During operation, when one side of the metering box body 1 is impacted, the moving plate 30 inside the reinforcing plate 21 will move, and the movement of the moving plate 30 will drive the connecting block 35 to move. A fixed column 37 is fixed on the connecting block 35, and a fixed rod 38 is rotatably connected to the fixed column 37. When the connecting block 35 moves The fixing rod 38 will slide in the supporting block 46. Since the fixing rod 38 contacts the moving block 40 on the fixing block 42, the movement of the fixing rod 38 will push the moving block 40 to move inside the fixing block 42. The connecting column 41 passes through the fixing block 42 and slides inside the fixing block 42. Both sides are connected to the moving block 40. Therefore, when the moving block 40 moves, it will push the other set of moving blocks 40 to move through the connecting column 41. The other set of moving blocks 40 will squeeze the fixing rod 38 on the other side. When the fixing rod 38 is squeezed, since the side where the connecting block 35 is connected to the fixing column 37 is in contact with the reinforcing plate 21, the connecting block 35 will squeeze the metal shell 22. The metal shell 22 is in contact with the reinforcing plate 21 and the inner wall of the metering box body 1, and the metal shell 22 is made of stainless steel, which has high strength and can effectively provide support for the connecting block 35.

[0037] Furthermore, the anti-magnetic component includes a metal plate 25, which is fixedly connected to the inside of the metering box body 1, and the left and right sides of the metal plate 25 are both fitted with the reinforcing plate 21, and the front end of the metal plate 25 is in contact with the rear end of the metal sleeve 22, and the metal sleeve 22 is inserted into the inside of the metering box body 1, and the left and right sides of the metal sleeve 22 are both fitted with the reinforcing plate 21, and the top and bottom ends of the metal sleeve 22 and the metal plate 25 are both fitted with the inner wall of the metering box body 1, and the front end of the metal sleeve 22 is fitted with the rear end of the cover plate 20, and the cover plate 20, the metal sleeve 22 and the metal plate 25 are all made of stainless steel;

[0038] Through the structural design of the anti-magnetic component, the metal shell 22 and the metal plate 25 are spliced ​​together and inserted into the interior of the meter box body 1, which not only improves the overall strength of the internal structure of the meter box body 1, but also the metal shell 22 and the metal plate 25 cooperate with the cover 20 to form a complete metal shell, which can shield the magnetic field, so as to improve the ability of the meter box body 1 to resist magnetic field interference. When working, the metal shell 22 and the metal plate 25 are both inserted into the interior of the meter box body 1, and the left and right sides of the metal shell 22 and the metal plate 25 are both in contact with the reinforcing plate 21, and the cover 20 and the metal plate 25 are in contact with the reinforcing plate 21. The metal shell 22 and the metal plate 25 are both made of stainless steel, which can support the interior of the meter box body 1 and improve the overall strength of the meter box body 1. When the cover 20 is closed, the rear end of the cover 20 will seal the front end of the metal shell 22, thereby forming a complete metal shell to shield the magnetic field, so as to improve the meter box body 1's ability to resist magnetic fields. The meter box body 1 and the reinforcing plate 21 themselves have a certain shielding effect on certain magnetic fields. Therefore, through the design of the cover 20, the metal shell 22 and the metal plate 25, the meter box body 1's ability to resist magnetic fields can be effectively improved.

[0039] Furthermore, two sets of mounting plates 24 are fixedly connected to the left and right sides of the metal housing 22. The mounting plates 24 are slidably connected to the mounting grooves 26. The mounting grooves 26 are provided on the reinforcing plate 21. The mounting plates 24 and the mounting grooves 26 are both trapezoidal in design.

[0040] During operation, mounting plates 24 are fixed on both sides of the metal sleeve 22, and the mounting plates 24 slide inside the mounting grooves 26. The design of the mounting plates 24 and the mounting grooves 26 can increase the contact area between the metal sleeve 22 and the mounting grooves 26, so as to increase the friction between the mounting plates 24 and the mounting grooves 26, so that the metal sleeve 22 is not easy to loosen when inserted into the meter box body 1. At the same time, since the metal sleeve 22 is fixed to the meter box body 1 by friction, when the metal sleeve 22 is disassembled, there is no need to destroy the entire meter box body 1, and the metal sleeve 22 only needs to be pulled out from the inside of the meter box body 1.

[0041] Furthermore, the rear end of the metal housing 22 is fixedly connected to a plurality of positioning posts 23, and the positioning posts 23 are inserted into the interior of the metal plate 25. The metal plate 25 is provided with holes corresponding to the positioning posts 23.

[0042] During operation, the positioning column 23 is fixed on the rear end of the metal shell 22. When the metal shell 22 and the metal plate 25 are installed inside the metering box body 1, the positioning column 23 fixed on the rear end of the metal shell 22 will be inserted into the metal plate 25. The metal plate 25 is also provided with holes corresponding to the positioning column 23 to facilitate splicing with the metal shell 22. The design of the positioning column 23 can improve the connection strength between the metal shell 22 and the metal plate 25.

[0043] Furthermore, a sponge 28 is fixedly connected to the inner wall of the reinforcing plate 21 , and the sponge 28 is close to the movable plate 30 ;

[0044] During operation, a sponge 28 is fixed on the inner wall of the reinforcing plate 21 , and the sponge 28 fills the gap between the movable plate 30 and the inner wall of the reinforcing plate 21 , thereby absorbing a certain impact force and providing a certain buffering effect.

[0045] Furthermore, a clamping column 33 is fixedly connected to one side of the movable plate 30 close to the mounting shell 31. The clamping column 33 is inserted into the mounting shell 31. The mounting shell 31 is provided with a socket corresponding to the clamping column 33.

[0046] During operation, the clamping column 33 is inserted into the mounting shell 31 , and the mounting shell 31 is also provided with a socket corresponding to the clamping column 33 , so as to improve the connection strength between the movable plate 30 and the mounting shell 31 . Example

[0047] See also Figure 4 and Figure 7 As shown in Comparative Example 1 as another embodiment of the present invention, a connecting rod 36 is inserted into the middle of the connecting block 35. The side of the connecting rod 36 away from the fixed column 37 is threadedly connected to the extension column 34. The extension column 34 is fixedly connected to the movable plate 30. The fixed column 37 is provided with a notch 39.

[0048] During operation, the connecting rod 36 is inserted into the middle of the connecting block 35, and a thread is provided on the connecting rod 36, which is threadedly connected to the extension column 34 through the connecting rod 36 to facilitate the connection between the connecting block 35 and the movable plate 30. When the movable plate 30 moves, the connecting block 35 connected thereto can be used to push the fixed rod 38 to move. The fixed column 37 and the fixed rod 38 are rotatably connected together. When the cover 20 is opened, the fixed rod 38 can be rotated to avoid the long length of the fixed rod 38 causing obstruction to the metering box body 1 during maintenance. A notch 39 is provided on the fixed column 37 to facilitate the rotation of the connecting rod 36 on the connecting block 35 through the notch 39, thereby facilitating the installation and disassembly of the connecting block 35.

[0049] A slot 44 is formed at the rear end of the cover plate 20 , and a rubber ring 45 is fixedly connected to the inner wall of the slot 44 . The rubber ring 45 is made of rubber.

[0050] During operation, a slot 44 is provided on the rear end of the cover 20 , and the rubber ring 45 is adapted to the slot 44 and fixed in the slot 44 . When the cover 20 is closed, the rubber ring 45 can improve the sealing between the cover 20 and the metering box body 1 .

[0051] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A metering box with high toughness, high protection and effective anti-magnetic field interference, comprising a metering box body (1), the front end of which is rotatably connected to a cover plate (20), characterized in that: The meter box body (1) is provided with a groove (48) at a position close to the rear end, and an anti-collision strip (47) is fixedly connected to the groove (48). Two groups of reinforcing plates (21) are fixedly connected to the left and right sides of the inner wall of the meter box body (1). A protective mechanism is arranged inside the reinforcing plate (21), and the protective mechanism is used to improve the impact resistance of the meter box body (1) so as to improve the protective strength of the meter box body (1). The rear end of the cover plate (20) is provided with a supporting mechanism, and the supporting mechanism is used to transfer the impact force on one side of the meter box body (1) to the other side of the meter box body (1), so as to further improve the impact resistance of the meter box body (1) through the overall structure of the meter box body (1). An anti-magnetic component is arranged inside the meter box body (1), and the anti-magnetic component is used to improve the anti-magnetic field interference capability of the meter box body (1), so as to better protect the power instruments inside the meter box body (1). The protection mechanism comprises a plurality of groups of first springs (32), wherein the first springs (32) are fixedly connected to the inner wall of the metering box body (1), the metering box body (1) is made of plastic material, the first spring (32) is fixedly connected to the mounting shell (31) on the side away from the inner wall of the metering box body (1), the mounting shell (31) is fitted with the movable plate (30) on the side away from the first spring (32), the side of the movable plate (30) is fixedly connected to a plurality of groups of protrusions (29), the protrusions (29) are inserted with plugs (27), the plugs (27) are fixedly connected to the inner wall of the reinforcing plate (21), the reinforcing plate (21) is made of plastic material, the movable plate (30) is fixedly connected to the side away from the mounting shell (31) with a support spring (49), the support spring (49) is fixedly connected to the inner wall of the reinforcing plate (21) on the side away from the movable plate (30), The supporting mechanism comprises a connecting block (35), one side of the connecting block (35) is inserted into the interior of the reinforcing plate (21), the side of the connecting block (35) inserted into the interior of the reinforcing plate (21) is in contact with the movable plate (30), the side of the connecting block (35) away from the movable plate (30) is in contact with the metal casing (22), the metal casing (22) is provided with a through hole corresponding to the connecting block (35), the connecting block (35) is fixedly connected with a fixing column (37), the side of the fixing column (37) away from the connecting block (35) is rotatably connected with a fixing rod (38), the side of the fixing rod (38) away from the fixing column (37) is in contact with the movable block (40), and the movable block (40) is provided with a fixing rod (38) on the movable plate (40). 0) is provided with two groups, the two groups of moving blocks (40) are both inserted into the fixed block (42), the two groups of moving blocks (40) are fixedly connected to the left and right sides of the connecting column (41), the connecting column (41) passes through the fixed block (42), the fixed block (42) is fixedly connected to the supporting block (46), the rear end of the supporting block (46) is provided with a fixing groove corresponding to the fixed block (42) and the fixing rod (38), the supporting block (46) is fixedly connected to the rear end of the cover plate (20), the side of the connecting column (41) close to the moving block (40) is sleeved with a second spring (43), the two sides of the second spring (43) are respectively fixedly connected to the moving block (40) and the fixed block (42), The anti-magnetic component comprises a metal plate (25), the metal plate (25) is fixedly connected to the inside of the metering box body (1), the left and right sides of the metal plate (25) are both in contact with the reinforcing plate (21), the front end of the metal plate (25) is in contact with the rear end of the metal casing (22), the metal casing (22) is inserted into the inside of the metering box body (1), the left and right sides of the metal casing (22) are both in contact with the reinforcing plate (21), the top and bottom ends of the metal casing (22) and the metal plate (25) are both in contact with the inner wall of the metering box body (1), the front end of the metal casing (22) is in contact with the rear end of the cover plate (20), and the cover plate (20), the metal casing (22) and the metal plate (25) are all made of stainless steel.

2. A metering box with high toughness, high protection and effective protection against magnetic field interference according to claim 1, characterized in that: Two sets of mounting plates (24) are fixedly connected to the left and right sides of the metal casing (22); the mounting plates (24) are slidably connected to mounting grooves (26); the mounting grooves (26) are arranged on the reinforcing plate (21); and the mounting plates (24) and the mounting grooves (26) are both designed in a trapezoidal shape.

3. A metering box with high toughness, high protection and effective protection against magnetic field interference according to claim 2, characterized in that: A plurality of groups of positioning posts (23) are fixedly connected to the rear end of the metal casing (22), and the positioning posts (23) are inserted into the interior of a metal plate (25). Holes corresponding to the positioning posts (23) are opened on the metal plate (25).

4. A metering box with high toughness, high protection and effective protection against magnetic field interference according to claim 2, characterized in that: A sponge (28) is fixedly connected to the inner wall of the reinforcing plate (21), and the sponge (28) is close to the moving plate (30).

5. According to claim 1, a metering box with high toughness, high protection and effective protection against magnetic field interference is characterized in that: A clamping column (33) is fixedly connected to one side of the movable plate (30) close to the mounting shell (31); the clamping column (33) is inserted into the mounting shell (31); and a plug hole corresponding to the clamping column (33) is provided on the mounting shell (31).

6. A metering box with high toughness, high protection and effective protection against magnetic field interference according to claim 1, characterized in that: A connecting rod (36) is inserted into the middle of the connecting block (35), and a side of the connecting rod (36) away from the fixed column (37) is threadedly connected to the extension column (34), and the extension column (34) is fixedly connected to the movable plate (30). A notch (39) is provided on the fixed column (37).

7. A metering box with high toughness, high protection and effective protection against magnetic field interference according to claim 1, characterized in that: A clamping groove (44) is provided at the rear end of the cover plate (20), and a rubber ring (45) is fixedly connected to the inner wall of the clamping groove (44), wherein the rubber ring (45) is made of rubber material.

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