Electric energy metering box convenient to overhaul

Abstract

An electric energy metering box convenient to overhaul comprises a box body, an inner cavity of the box body is divided into a first installation area and a second installation area through a partition plate, and a movable first installation plate used for installing a master control circuit breaker is arranged in the first installation area. A movable second mounting plate used for mounting a plurality of electric energy meters and sub-control circuit breakers is arranged in the second mounting area, and a movement stopping mechanism is further included and prevents the first mounting plate from moving towards the opening end of the box body when the main control circuit breaker is not in the opening state; the linkage block is arranged between the first mounting plate and the second mounting plate, so that the second mounting plate moves along with the first mounting plate when the first mounting plate moves; the retaining mechanism abuts against the rear end of the first mounting plate when the first mounting plate reaches the opening end of the box body, and self-locking is achieved; and the quick connecting mechanism provides an assembling station and can provide three-way limiting and two-position locking for the electric energy meter or the sub-control circuit breaker. The device has the beneficial effect that the installation efficiency and the maintenance efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric power facilities, in particular to an electric energy metering box which is easy to maintain. Background Art

[0002] An energy meter box is a type of electrical distribution equipment used to house energy metering instruments, typically used in residential, commercial, or industrial locations to record and display electricity usage.

[0003] At present, the existing electricity metering box has the following defects:

[0004] 1. Space limitations

[0005] The relatively small enclosure of an energy meter, a crucial component of which is the energy meter, is both physically large and requires careful layout with other components, limiting access during installation and maintenance. For example, some energy meter boxes also require the installation of multiple components such as transformers, switches, and terminal blocks. The presence of the energy meter complicates the layout of these components, making it difficult for operators to maneuver their hands and tools within the limited space, thus increasing the complexity of installation and maintenance.

[0006] 2. Installation complexity

[0007] During installation, the meter must first be secured to its designated location within the enclosure using screws and other fasteners. Next, multiple cables must be accurately inserted into the meter's input and output terminals and secured with screws. Because the meter is located within the enclosure, the cable routing and wiring process is complex, and ensuring accurate and secure wiring within the confined space consumes significant time and labor, reducing installation efficiency. Furthermore, any wiring errors or loosening require repeated inspection and adjustment within the confined space, further complicating installation.

[0008] 3. Inconvenient maintenance

[0009] When an energy meter malfunctions and requires repair, maintenance personnel often need to first open the meter box door and perform inspection and repair operations within the confined space. Because the meter and other components are relatively fixed in position, maintenance personnel's hand movements are limited, making it extremely inconvenient to use tools and replace parts. For example, replacing certain components within the meter may require removing numerous fixing screws and connecting cables to remove the meter from the box. This not only increases maintenance time but can also lead to misoperation of other components, potentially damaging them. Summary of the Invention

[0010] The present invention aims to solve the above-mentioned shortcomings of the prior art and provide an electric energy meter box that is easy to maintain to solve the above-mentioned problems.

[0011] The present invention solves the technical problem by adopting a technical solution: This electric energy meter box that is easy to maintain includes a box body, the inner cavity of the box body is divided into a first installation area and a second installation area by a partition plate, the first installation area is provided with a movable first installation plate for installing a main control circuit breaker, and the second installation area is provided with a movable second installation plate for installing a plurality of electric energy meters and sub-control circuit breakers, and further includes

[0012] a stop mechanism, which is partially provided on the operating handle of the master circuit breaker and partially provided on the inner wall of the box located in the first mounting area, so as to prevent the first mounting plate from moving toward the open end of the box when the master circuit breaker is not in the open state; and

[0013] A linkage block is provided between the first mounting plate and the second mounting plate so that the second mounting plate moves along with the first mounting plate; and

[0014] A holding mechanism, part of which is provided on the partition plate and part of which is provided on the linkage block, so that when the linkage block moves with the first mounting plate, the portion of the holding mechanism provided on the partition plate gradually extends and abuts against the rear end of the first mounting plate when the first mounting plate reaches the open end of the box body, thereby achieving self-locking;

[0015] The quick connection mechanism is arranged on the second mounting plate and has a plurality of assembly stations, and the assembly stations can provide three-way limiting and two-position locking for the electric energy meter or the sub-control circuit breaker.

[0016] For further improvement, the first installation area and the second installation area are provided with two symmetrically distributed installation grooves on the upper end surface and the lower end surface of the inner cavity of the box, and a slide rail is provided in the installation groove. A slider connected to the first mounting plate or the second mounting plate is movably provided on the slide rail, and a lock is provided between the first mounting plate or the second mounting plate and the slider to prevent the two from separating.

[0017] For further improvement, a socket for inserting a lock piece is provided on the end surface of the slider that abuts against the first mounting plate or the second mounting plate, and a locking structure that can prevent the inserted lock piece from detaching is provided in the socket inside the slider.

[0018] Further improvement, the stopping mechanism includes an operating arm and a card block. The operating arm is connected to the toggle switch handle of the master control circuit breaker, and part of the operating arm is located at the rear end of the first mounting plate through a through groove set on the first mounting plate. The card block is fixedly set on the inner wall of the box located in the first mounting area. The card block has a card slot for guiding the operating arm to enter and keep the master control circuit breaker in the closed state after entering.

[0019] For further improvement, the linkage block includes a main body and two side wings extending to both sides respectively. The main body is also provided with a connecting rod extending upward. The partition plate is provided with an installation cavity near the lower end. The retaining mechanism is arranged in the installation cavity, which includes a swingable limiting arm and a movable first rack. The first rack is connected to the connecting rod to move with it when the first mounting plate moves. One end of the limiting arm is provided with a plurality of meshing teeth engaged with the first rack. The two side wings are respectively connected to the first mounting plate and the second mounting plate.

[0020] To be further improved, the retaining mechanism also includes a self-locking block that is arranged on the front end surface of the partition plate and is movable. When the first rack moves toward the open end of the box body, it contacts the self-locking block and drives the self-locking block to move upward so as not to hinder the movement of the first rack after the movement. The first rack is provided with a locking mouth that allows the self-locking block to be inserted after the limiting arm abuts against the first mounting plate.

[0021] Further improvement, the quick connection mechanism includes a box body, several connecting arm groups, and several rotating columns. The box body is arranged on the second mounting plate. The connecting arm groups are consistent in number with the electricity meter or the sub-control circuit breaker and are arranged at the corners of the box body, and each group has a first connecting arm and a second connecting arm. The first connecting arm is arranged at the outer end of the box body, and the second connecting arm is arranged on the outside of the box body. There are guide channels in the first connecting arm and the second connecting arm. A movable limit plug and a first push block are arranged in the guide channel. The limit plug is plugged in with the electricity meter. The first push block drives the limit plug to move in the plug-in direction. The rotating column is arranged in the box body and uses its own rotation to drive the first push block to move.

[0022] For further improvement, a second propulsion block is provided in the guide channel of the second connecting arm, and connecting structures are provided between the first propulsion block and the limit plug, between the second propulsion block and the first propulsion block, and between the second propulsion block and the limit plug, so as to synchronously drive the limit plug and the second propulsion block to move in the same direction when the first propulsion block moves in the direction opposite to the plug-in direction.

[0023] For further improvement, the first propulsion block is provided with a second rack extending into the box body, and the rotating column is provided with two gears distributed upper and lower. The second rack of the first propulsion block of the first connecting arm is engaged with the gear located above, and the second rack of the first propulsion block of the second connecting arm is engaged with the gear located below.

[0024] For further improvement, a through hole is provided on the second mounting plate for the rotating column to pass through, and the through hole is provided with sockets symmetrically distributed on both sides of the second mounting plate. The rotating column is provided with an anti-slip rod which passes through the socket when it passes through the through hole. The anti-slip rod is misaligned with the socket when the limit plug is locked with the electric energy meter or the sub-control circuit breaker.

[0025] The beneficial effects of the present invention are:

[0026] 1. The present invention enables operators to perform operations outside by arranging the first mounting plate and the second mounting plate to be movable, which can improve installation efficiency, that is, wiring is smoother and the steps are simpler. It can also improve maintenance convenience and reduce the number of parts that maintenance personnel need to disassemble. In addition, maintenance personnel will not be excessively restricted during operation due to the limited space inside the box, thereby reducing the difficulty of maintenance.

[0027] 2. The present invention uses a stop mechanism to prevent the first mounting plate and the second mounting plate from moving when the power is on, thereby preventing operators from performing operations when the power is on, thus providing protection.

[0028] 3. The present invention uses a retaining mechanism to keep the first mounting plate and the second mounting plate at the open end of the box body after they are moved, and they will not move when subjected to force, which is convenient for operators to operate.

[0029] 4. The present invention realizes the rapid assembly of the electric energy meter, the sub-control circuit breaker and the corresponding mounting plate through a quick connection mechanism without the need for auxiliary tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the present invention, in which the first mounting plate and the second mounting plate are hidden to show the slide rail and the slider;

[0032] Figure 3 For the present invention Figure 2 A partial enlarged schematic diagram of part A;

[0033] Figure 4 It is a schematic cross-sectional view of the side of the present invention;

[0034] Figure 5 This is a schematic structural diagram of the present invention, wherein the second mounting plate is hidden;

[0035] Figure 6 It is a partial cross-sectional schematic diagram of the front side of the present invention;

[0036] Figure 7 For the present invention Figure 6 A partial enlarged diagram of part B

[0037] Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of part C in the middle;

[0038] Figure 9 This is a structural schematic diagram of the back of the first mounting plate and the second mounting plate of the present invention;

[0039] Figure 10 For the present invention Figure 9 A partial enlarged schematic diagram of part D in the middle. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings:

[0041] Referring to the accompanying drawings: This electric energy meter box that is easy to maintain includes a box body 1. The inner cavity of the box body 1 is divided into a first installation area 11 and a second installation area 12 by a partition plate 2. The first installation area 11 is provided with a movable first installation plate 111 for installing a master control circuit breaker. The second installation area 12 is provided with a movable second installation plate 121 for installing a plurality of electric energy meters and sub-control circuit breakers.

[0042] a stop mechanism, which is partially provided on the operating handle of the master circuit breaker and partially provided on the inner wall of the box 1 located in the first mounting area 11, so as to prevent the first mounting plate 111 from moving toward the open end of the box 1 when the master circuit breaker is not in the open state; and

[0043] A linkage block 5 is provided between the first mounting plate 111 and the second mounting plate 121 so that the second mounting plate 121 moves along with the first mounting plate 111; and

[0044] The holding mechanism is partially provided on the partition plate 2 and partially provided on the linkage block 5, so that when the linkage block 5 moves following the first mounting plate 111, the portion of the holding mechanism provided on the partition plate 2 gradually extends out, and abuts against the rear end of the first mounting plate 111 when the first mounting plate 111 reaches the open end of the box body 1, thereby achieving self-locking;

[0045] The quick connection mechanism is arranged on the second mounting plate 121 and has a plurality of assembly stations, and the assembly stations can provide three-way limiting and two-position locking for the electric energy meter or the sub-circuit breaker.

[0046] The principle of the present invention is that the first mounting plate 111 and the second mounting plate 121 are used to install the main control circuit breaker, the electric energy meter, and the sub-control circuit breaker respectively, and the first mounting plate 111 and the second mounting plate 121 are movable (movable from inside the box body 1 to outside the box body 1) so that the operators can work outside during the installation or maintenance stage, that is, the working space is large and the lighting effect is good at night. The purpose of the stop mechanism is to play a protective role, so that the first mounting plate 111 and the second mounting plate 121 cannot be moved in the non-opening state (non-power-off), which is also a reminder. Then the operator can also cut off the power to the main control circuit breaker in time. After the power is cut off, the stop mechanism releases the stop constraint. The first mounting plate 111 uses the linkage block 5 to enable the second mounting plate 121 to move synchronously when it moves. Similarly, the second mounting plate 121 cannot move in the non-moving state. The purpose of the holding mechanism is to hold the first mounting plate 111 The mounting plate 111 and the second mounting plate 121 are maintained at the open end of the box body 1, and have the ability to resist the force exerted on the mounting plate by the operator during operation, so that the force provided by the operator can fully act on the main control circuit breaker, the electric energy meter, and the sub-control circuit breaker, and can quickly tighten or loosen the screws of the terminal, and there is no need to hold the first mounting plate 111 and the second mounting plate 121 by hand. The quick connection mechanism is used as a connecting component, which is itself set on the second mounting plate 121, and two are set according to usage requirements, one of which is located at the upper end for connecting the electric energy meter and the other is located at the lower end for connecting the sub-control circuit breaker. When connecting, the three-way limit can be used to quickly determine the final position of the electric energy meter or sub-control circuit breaker on the assembly station. The two locking positions stably set the electric energy meter or sub-control circuit breaker on the second mounting plate 121 to achieve convenient connection. The main control circuit breaker is fixed to the first mounting plate 111 by screws.

[0047] In order to realize the movement of the first mounting plate 111 and the second mounting plate 121, the first mounting area 11 and the second mounting area 12 are provided with two symmetrically distributed mounting grooves 13 on the upper end surface and the lower end surface of the inner cavity of the box body 1. The setting of the mounting groove 13 enables the box body 1 to have a hidden installation space. A slide rail 81 is provided in the mounting groove 13. A slider 82 connected to the first mounting plate 111 or the second mounting plate 121 is movably provided on the slide rail 81. The slide rail 81 and the slider 82 provided in the mounting groove 13 are hidden, and the end surface of the slider 82 that is not in contact with the slide rail 81 is kept at the same horizontal plane as the upper end surface or the lower end surface of the box body 1, so that the first mounting plate 111 and the second mounting plate The upper or lower end surface of mounting plate 121 can be aligned with the upper or lower end surface of housing 1, providing support so that first mounting plate 111 or second mounting plate 121 can withstand the weight of the master circuit breaker, energy meter, and sub-circuit breaker. A lock 9 is provided between first mounting plate 111 or second mounting plate 121 and slider 82 to prevent separation of the two. Lock 9 is connected to slider 82. First mounting plate 111 or second mounting plate 121 is located within the mounting spacing between slider 82 and lock 9. This prevents lock 9 from disengaging from slider 82 while preventing the first mounting plate 111 or second mounting plate 121 from disengaging from slider 82. In this embodiment, first mounting plate 111 and second mounting plate 121 have the same configuration, being bent to form a mounting portion and a connecting portion disposed perpendicularly to each other. The mounting portion is used to mount the circuit breaker, energy meter, and sub-circuit breaker, while the connecting portion is connected to slider 82 via lock 9.

[0048] The end surface of the slider 82 that abuts the first mounting plate 111 or the second mounting plate 121 is provided with a socket 821 for inserting the lock member 9. The socket 821 is provided with a locked structure in the slider 82 that can prevent the inserted lock member 9 from escaping. The socket 821 is for the lock member 9 to enter, and the locked structure is used to prevent the entered lock member 9 from escaping from the socket 821 in the non-unlocked state, thereby maintaining the connection between the first mounting plate 111 or the second mounting plate 121 and the slider 82. The lock member 9 is a columnar component, including a plug post 91, a lock provided at one end of the plug post 91, and a locking member 921. The rod 92 and the gripping block 93 provided at the other end of the plug post 91 are locked. The structure includes an entry guide channel 8211, a transition guide channel 8212, and a locking guide channel 8213 provided on the slider 82. The three guide channels are interconnected with each other and with the socket 821. The entry guide channel 8211 is in the vertical direction and is consistent with the insertion direction of the socket 821. When the plug post 91 is inserted into the socket 821, the locking rod 92 also enters the entry guide channel 8211 and is locked when the locking rod 92 reaches the entry point. When the locking rod 92 reaches the terminal end of the guide channel 8211, the locking rod 92 also reaches the starting end of the transition guide channel 8212 synchronously. The transition guide channel 8212 is in the horizontal direction and is used to guide the locking rod 92 to the locking guide channel 8213. The plug post 91 is a cylindrical configuration, so the locking rod 92 can be moved in the transition guide channel 8212 by rotation. When the locking rod 92 reaches the terminal end of the transition guide channel 8212, the locking rod 92 also reaches the starting end of the locking guide channel 8213 synchronously. The locking guide channel 8213 is also in the vertical direction. In terms of direction, considering that the upper and lower end surfaces of the box body 1 are both provided with sliders 82, and the sliders 82 in these two directions are arranged opposite to each other, the movement directions of entering the guide channel 8211 and the locking guide channel 8213 are inconsistent. That is, when the lock member 9 enters the insertion hole 821 located on the upper end surface and enters the guide channel 8211, it moves from bottom to top, while when the lock rod 92 reaches the terminal end of the locking guide channel 8213, it moves from top to bottom, so that the lock member 9 can be confined in the insertion hole 821 in a hanging manner;When the lock member 9 enters the insertion hole 821 at the lower end surface and enters the guide channel 8211, it moves from top to bottom, while the lock rod 92 moves from top to bottom when reaching the terminal end of the locking guide channel 8213. Considering that if the slider 82 and the lock member 9 are assembled according to the upper end surface (i.e., the movement direction of the lock rod 92 when entering the guide channel 8211 is opposite to the movement direction of the locking guide channel 8213), then the effect of inertia will cause the lock rod 92 to always remain at the starting section of the locking guide channel 8213, and it cannot maintain a stable installation. Therefore, the locking guide channel 8213 at this position guides the lock rod 92 to move from top to bottom, that is, it is also limited in a suspended manner within the insertion hole 821. At the same time, the locked structure extends the total length of the route, which also makes it more difficult for the lock member 9 to escape after entering, thereby ensuring the stability of the connection between the slider 92 and the first mounting plate 111 or the second mounting plate 121.

[0049] The stopping mechanism includes an operating arm 41 and a card block 42. The operating arm 41 is connected to the toggle switch handle of the master control circuit breaker, and a part of the operating arm 41 is located at the rear end of the first mounting plate 111 through a through slot 1111 provided on the first mounting plate 111. The card block 42 is fixedly arranged on the inner wall of the box body 1 located in the first mounting area 11. The card block 42 has a card slot 421 for guiding the operating arm 41 to enter and keep the master control circuit breaker in the closed state after entering. On the one hand, the operating arm 41 provides an operating grip for the operator, and on the other hand, it cooperates with the card block 42. The card block 42 is provided with a card slot 421 for part of the operating arm 41 to be placed therein. The card slot 421 is used to limit the movement of the first mounting plate 111, and the operating arm 41 is placed in the card slot 421 only when the master control circuit breaker is in the closed state. The operating arm 41 is assembled from two U-shaped parts, that is, the two vertical sections of one of the U-shaped parts have outwardly extending The insertion rod and the two vertical sections of the other U-shaped part each have an insertion cavity for the insertion rod, and the two form a complete whole when assembled. This arrangement is to allow part of the operating arm 41 to pass through the through slot 1111. On the one hand, the through slot 1111 allows part of the operating arm 41 to be placed at the rear end of the first mounting plate 111, and on the other hand, it will not hinder the swing of the operating arm 41, because the operating arm 41 will swing with the swing of the toggle switch handle of the master control circuit breaker. At the same time, the space required for the operating arm 41 to swing when the switch is opened is greater than the space between the first mounting plate 111 and the rear end surface of the box body 1 when the operating arm 41 exists in the card slot 421. Therefore, after disengaging from the card slot 421, it will abut against the rear end surface of the box body 1, and as it swings, it can generate a force that pushes the first mounting plate 111 outward. This force also serves as a certain prompt, which means that the unlocking has been completed and the first mounting plate 111 can be moved to the open end of the box body 1.

[0050] In order to realize the simultaneous connection of the linkage block 5 with the first mounting plate 111 and the second mounting plate 121, the linkage block 5 includes a main body 51 and two side wings 52 extending to both sides respectively. The main body 51 is also provided with a connecting rod 511 extending upward. The partition plate 2 is provided with a mounting cavity 21 at a position near the lower end. The holding mechanism is arranged in the mounting cavity 21, which includes a swingable limiting arm 61 and a movable first rack 62. The first rack 61 is connected to the connecting rod 511 to follow the movement when the first mounting plate 111 moves. One end of the limiting arm 61 is provided with a plurality of meshing teeth engaged with the first rack 61. The two side wings 52 are respectively connected to the first mounting plate 111 and the second mounting plate 121. The main body 51 and the side wings 52 are connected. It is an integrally formed setting, and the main body 51 is connected to the first rack 62 through a connecting rod 511. The connecting rod 511 moves in the guide groove 22 formed on the partition plate 2 and communicated with the installation cavity 21. The first rack 62 follows the linkage block 5 under the action of the connecting rod 511. The limit arm 61 is rotatably set in the installation cavity 21 and is provided with meshing teeth to achieve meshing cooperation with the first rack 62, so that the limit arm 61 rotates under the movement of the first rack 62, and the swing amplitude of the limit arm 61 only needs 90°, so the number of meshing teeth on the first rack 62 only supports the limit arm 61 to rotate 90°. This can also avoid the limit arm 61 completing the 90° rotation in advance and hindering the movement of the first mounting plate 111.

[0051] The holding mechanism also includes a self-locking block 63 that is arranged on the front end surface of the partition plate 2 and is movable. When the first rack 62 moves toward the open end of the box body 1, it contacts the self-locking block 63 and drives the self-locking block 63 to move upward so as not to hinder the movement of the first rack 62 after the movement. The first rack 62 is provided with a locking port 621 for inserting the self-locking block 63 after the limit arm 61 abuts against the first mounting plate 111. The self-locking block 63 is provided to prevent the engagement of the first rack 62 and the limit arm 61, and while preventing the first rack 62 from moving, it also prevents the limit arm 61 from rotating. The self-locking block 63 can complete itself when inserted into the locking port 621, that is, in the initial state, the insertion end of the self-locking block 63 is located at the first rack The self-locking block 63 is on the moving path of the box body 1, and the end surface of the insertion end close to the partition plate 2 is an inclined surface. After the inclined surface contacts the end of the first rack 62, it pushes the self-locking block 63 upward according to the inclination of the inclined surface. After moving upward, the lower end surface of the self-locking block 63 abuts the upper end surface of the first rack 62, thereby maintaining the upward movement of the self-locking block 63. When the lock hole 621 is located below the self-locking block 63, the self-locking block 63 automatically moves down into the lock hole 621. At this time, the limit arm 61 abuts against the first mounting plate 111, so that the first mounting plate 111 is retained at the open end of the box body 1, and the self-locking block 63 does not disengage from the lock hole 621 and the first mounting plate 111 cannot move inward. The self-locking block 63 is manually disengaged from the lock hole 621. A U-shaped bracket 631 with an insertion space is provided on the front end surface of the partition plate 2. The bracket is obtained by bending a strip-shaped member and is connected to the partition plate 2 by welding. In this embodiment, the meshing teeth of the limiting arm 61 constitute a left-handed gear, which can satisfy the requirement that the limiting arm 61 rotates counterclockwise when the first rack 62 moves outward, and rotates clockwise when the first rack 62 moves inward.

[0052] The quick connection mechanism includes a box body 71, a plurality of connecting arm groups 72, and a plurality of rotating columns 73. The box body 71 is arranged on the second mounting plate 121. The connecting arm groups 72 are consistent in number with the number of the electric energy meter or the sub-control circuit breaker and are arranged at the corner position of the box body 71. Each group has a first connecting arm 721 and a second connecting arm 722. The first connecting arm 721 is arranged at the outer end of the box body 71, and the second connecting arm 722 is arranged on the outer side of the box body 71. The first connecting arm 721 and the second connecting arm 722 are both provided with a guide channel 723. The guide channel 723 is provided with a The movable limit plug 7231 and the first propulsion block 7232 are connected to the electric energy meter. The first propulsion block 7232 drives the limit plug 7231 to move in the plugging direction. The rotating column 73 is set in the box body 71 and uses its own rotation to drive the first propulsion block 7232 to move. The box body 71 is used to set the connecting arm group 72 and the rotating column 73. The connecting arm 72 has a first connecting arm 721 and a second connecting arm 722. The first connecting arm 721 is L-shaped and the second connecting arm 722 is U-shaped. The difference in the configuration of 721 is that there is an additional extension section, which is used as the lower end support of the electric energy meter or the sub-controlled circuit breaker. The parts of the first connecting arm 721 and the second connecting arm 722 that are consistent with the configuration of the first connecting arm 721 are used as the left and right side supports of the electric energy meter or the sub-controlled circuit breaker. In this way, a space is naturally obtained that can quickly limit the final position of the electric energy meter or the sub-controlled circuit breaker in the assembly station. The limit plug 7231 is used to lock the electric energy meter or the sub-controlled circuit breaker when it is in the final position. It is present in the guide channel 723 (the first connecting arm 721 and The second connecting arm 722 has a guide channel 723), and the movement of the limit plug 7231 is realized by the first pushing block 7232, that is, the first pushing block 7232 is pushed out of the guide channel 723 to enter the slot of the electric energy meter or the sub-control circuit breaker, thereby completing the installation of the electric energy meter or the sub-control circuit breaker on the second mounting plate 121. The end of the limit plug 7231 close to the first pushing block 7232 is an inclined surface, so that when the first pushing block 7232 is pushed upward, the limit plug 7231 can be pushed outward as the inclination of the inclined surface changes.

[0053] The guide channel 723 of the second connecting arm 722 also has a second propulsion block 7233. A connection structure is provided between the first propulsion block 7232 and the limit plug 7231, between the second propulsion block 7233 and the first propulsion block 7232, and between the second propulsion block 7233 and the limit plug 7231. When the first propulsion block 7232 moves in the direction opposite to the plugging direction, the limit plug 7231 and the second propulsion block 7233 are synchronously driven to move in the same direction. The second propulsion block 7233 is provided in the guide channel 723 of the second connecting arm 722. 3 Because the second connecting arm 722 has an additional extension section than the first connecting arm 721, that is, an additional 90° corner, the second pushing block 7233 is provided with an additional conduction point. One end of the second pushing block 7233 has the same configuration as one end of the limit plug 7231, that is, it has an inclined surface. The driving method of the second pushing block 7233 is the same as the driving method of the limit plug 7231. The connection structure mainly drives the limit plug 7231 to return to the reset direction when the first pushing block 7232 moves in the reset direction (when the limit plug 7231 is separated from the slot in the electric energy meter or the sub-circuit breaker). The first push block 7232 is moved in the same direction as the first push block 7233, and the second push block 7233 is moved in the same direction as the first push block 7232. The connection structure is a flexible wire 7234, and one end of the first push block 7232, both ends of the second push block 7233, and one end of the first push block 7232 are provided with a threading channel 7235 for them to pass through, and one wire is used to simultaneously connect two components, namely the second push block 7233 and the first push block 7232, and the first push block 7232 and the limit plug 7231. When threading, the flexible wire 7234 is first knotted at one end, and the knotted end cannot enter the threading channel 7235 of the first push block 7232, allowing only The non-knotted section enters the threading channel 7235 from the entrance and exits from the exit, and then enters the threading channel 7235 of the next part (limit plug 7231 or second propulsion block 7233), also entering from the entrance and exiting from the exit. The end that has passed through is knotted again, so that the flexible line 7234 cannot be detached. While completing the connection between the two components, it also plays a follow-up role. Moreover, the flexible line 7234 does not have too much excess length, that is, the second propulsion block 7233 or the limit plug 7231 can follow the movement while the first propulsion block 7232 moves.

[0054] The first propulsion block 7232 is provided with a second rack 72321 extending into the box body 71, and the rotating column 73 is provided with two gears 731 distributed upper and lower. The second rack 72321 of the first propulsion block 7232 of the first connecting arm 721 is engaged with the gear 731 located above, and the second rack 72321 of the first propulsion block 7232 of the second connecting arm 722 is engaged with the gear 731 located below. That is, the first propulsion block 7232 is driven to move by the tooth engagement. This method is simple and convenient. The first propulsion block 7232 is driven to move. The first propulsion block 7232 has a second rack 72321 extending outside the guide channel 723. The rotating column 73 is provided with two symmetrically distributed gears 731, one above and one below. During the manufacturing process, the thickness of the second rack 72321 is machined to half the thickness of the first propulsion block 7232. This allows the rotating column 73 to engage with the second racks 72321 of the two connecting arms simultaneously. This allows the rotating column 73 to simultaneously drive the two first propulsion blocks 7232 to move synchronously and in the same direction, improving assembly convenience. In this embodiment, the upper gear 731 is right-handed, and the lower gear 731 is left-handed. Therefore, when the rotating column 73 rotates in one direction, the second rack 72321 engaged with the corresponding gear 731 can move in either the unlocking or locking direction.

[0055] The second mounting plate 121 is provided with a through hole 1211 for the rotating column 73 to pass through, and the through hole 1211 is provided with sockets 12111 distributed symmetrically on both sides on the second mounting plate 121, and the rotating column 73 is provided with an anti-slip rod 732 which passes through the socket 12111 together when the rotating column 73 passes through the through hole 1211. The anti-slip rod 732 is misaligned with the socket 12111 when the limit plug 7231 is locked with the electric energy meter or the sub-control circuit breaker. Such a setting of the rotating column 73 can also serve as a component for assembling and connecting the box body 71 and the second mounting plate 121, and there are four rotating columns 73, so when one of the electric energy meters or sub-control circuit breakers is unlocked, it will not affect the connection between the box body 71 and the second mounting plate 121. It is also easy to assemble. The rotating column 73 passes through the through hole 1211 and the socket 12111 at the same time when the box body 71 is connected to the second connecting plate 121, and the through hole 1211 and the socket 12111 both have chamfered transitions on the front end surface of the second mounting plate 121, which can increase the inner diameter of the inlet end, making it easier for the rotating column 73 to enter. After entering, the electric energy meter or the sub-control circuit breaker is set on the assembly station, and then the rotating column 73 is rotated one by one to make the limit plug 7231 inserted into the slot of the electric energy meter or the sub-control circuit breaker. At the same time, the anti-drop rod 732 is misaligned with the socket 12111, thereby achieving the purpose of preventing the anti-drop rod 732 from falling out, so that the box body 71 can be stably set on the second mounting plate 121.

[0056] Although the invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An electric energy meter box convenient for maintenance, comprising a box body (1), wherein the inner cavity of the box body (1) is divided into a first installation area (11) and a second installation area (12) by a partition plate (2), wherein a first installation plate (111) which is movable and used for installing a master control circuit breaker is provided in the first installation area (11), and a second installation plate (121) which is movable and used for installing a plurality of electric energy meters and sub-control circuit breakers is provided in the second installation area (12), characterized in that: Also includes a stop mechanism, partly provided on the operating handle of the master control circuit breaker and partly provided on the inner wall of the box (1) located in the first mounting area (11), so as to prevent the first mounting plate (111) from moving toward the open end of the box (1) when the master control circuit breaker is not in an open state; and a linkage block (5) provided between the first mounting plate (111) and the second mounting plate (121) so that the second mounting plate (121) moves along with the first mounting plate (111); as well as A holding mechanism, part of which is arranged on the partition plate (2) and part of which is arranged on the linkage block (5), so that when the linkage block (5) moves following the first mounting plate (111), the portion of the holding mechanism arranged on the partition plate (2) gradually extends out, and when the first mounting plate (111) reaches the open end of the box body (1), it abuts against the rear end of the first mounting plate (111) and realizes self-locking; A quick connection mechanism is provided on the second mounting plate (121) and has a plurality of assembly stations, wherein the assembly stations can provide three-way limiting and two-position locking for the electric energy meter or the sub-control circuit breaker.

2. The electric energy meter box that is easy to maintain according to claim 1 is characterized in that: The first installation area (11) and the second installation area (12) are both provided with two symmetrically distributed installation grooves (13) on the upper end surface and the lower end surface of the inner cavity of the box body (1), and a slide rail (81) is provided in the installation groove (13), and a slider (82) connected to the first installation plate (111) or the second installation plate (121) is movably provided on the slide rail (81), and a lock (9) is provided between the first installation plate (111) or the second installation plate (121) and the slider (82) to prevent the two from separating.

3. The electric energy meter box that is easy to maintain according to claim 2 is characterized in that: An insertion hole (821) for inserting the locking element (9) is provided on the end surface of the slider (82) abutting against the first mounting plate (111) or the second mounting plate (121), and a locking structure capable of preventing the inserted locking element (9) from being disengaged is provided in the insertion hole (821) within the slider (82).

4. The electric energy meter box that is easy to maintain according to claim 1 is characterized in that: The stop mechanism comprises an operating arm (41) and a clamping block (42); the operating arm (41) is connected to the toggle switch handle of the master control circuit breaker, and a portion of the operating arm (41) is located at the rear end of the first mounting plate (111) through a through slot (1111) provided on the first mounting plate (111); the clamping block (42) is fixedly provided on the inner wall of the box (1) located in the first mounting area (11); the clamping block (42) has a clamping slot (421) for guiding the operating arm (41) to enter and maintain the master control circuit breaker in a closed state after entering.

5. The electric energy meter box that is easy to maintain according to claim 1 is characterized in that: The linkage block (5) includes a main body (51) and two side wings (52) extending to both sides respectively. The main body (51) is also provided with a connecting rod (511) extending upward. The partition plate (2) is provided with a mounting cavity (21) near the lower end. The retaining mechanism is arranged in the mounting cavity (21), which includes a swingable limiting arm (61) and a movable first rack (62). The first rack (61) is connected to the connecting rod (511) so as to follow the movement when the first mounting plate (111) moves. One end of the limiting arm (61) is provided with a plurality of meshing teeth (611) meshing with the first rack (61). The two side wings (52) are respectively connected to the first mounting plate (111) and the second mounting plate (121).

6. The electric energy meter box that is easy to maintain according to claim 5 is characterized in that: The holding mechanism further comprises a self-locking block (63) which is arranged on the front end surface of the partition plate (2) and is movable. When the first rack (62) moves toward the open end of the box body (1), it contacts the self-locking block (63) and drives the self-locking block (63) to move upward, so as not to hinder the movement of the first rack (62) after the movement. The first rack (62) is provided with a locking port (621) which allows the self-locking block (63) to be inserted after the limiting arm (61) abuts against the first mounting plate (111).

7. The electric energy meter box that is easy to maintain according to claim 1 is characterized in that: The quick connection mechanism comprises a box body (71), a plurality of connection arm groups (72), and a plurality of rotating columns (73); the box body (71) is arranged on the second mounting plate (121); the connection arm groups (72) are the same in number as the electric energy meter or the sub-control circuit breaker and are arranged at the corner positions of the box body (71); and each group comprises a first connection arm (721) and a second connection arm (722); the first connection arm (721) is arranged at the outer end of the box body (71), and the second connection arm (722) is arranged at the inner end of the box body (71). On the outside, the first connecting arm (721) and the second connecting arm (722) are each provided with a guide channel (723), and a movable limit plug (7231) and a first propulsion block (7232) are provided in the guide channel (723), the limit plug (7231) is plugged into the electric energy meter, and the first propulsion block (7232) drives the limit plug (7231) to move in the plugging direction, and the rotating column (73) is provided in the box body (71) and drives the first propulsion block (7232) to move by its own rotation.

8. The electric energy meter box that is easy to maintain according to claim 7 is characterized in that: The guide channel (723) of the second connecting arm (722) also has a second propulsion block (7233), and connection structures are provided between the first propulsion block (7232) and the limit plug (7231), between the second propulsion block (7233) and the first propulsion block (7232), and between the second propulsion block (7233) and the limit plug (7231), so as to synchronously drive the limit plug (7231) and the second propulsion block (7233) to move in the same direction when the first propulsion block (7232) moves in the direction opposite to the plug-in direction.

9. The electric energy meter box that is easy to maintain according to claim 8, characterized in that: The first propulsion block (7232) is provided with a second rack (72321) extending into the box body (71), and the rotating column (73) is provided with two gears (731) distributed in the upper and lower directions. The second rack (72321) of the first propulsion block (7232) of the first connecting arm (721) is engaged with the gear (731) located above, and the second rack (72321) of the first propulsion block (7232) of the second connecting arm (722) is engaged with the gear (731) located below.

10. The electric energy meter box that is easy to maintain according to claim 8, characterized in that: The second mounting plate (121) is provided with a through hole (1211) for the rotating column (73) to pass through, and the through hole (1211) is provided with sockets (12111) symmetrically distributed on both sides on the second mounting plate (121). The rotating column (73) is provided with an anti-slip rod (732) that passes through the socket (12111) when the rotating column (73) passes through the through hole (1211), and the anti-slip rod (732) is misaligned with the socket (12111) when the limit plug (7231) is locked and matched with the electric energy meter or the sub-control circuit breaker.

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