Low pressure meter box body structure and method of use

Abstract

A low pressure metering box body structure and method for using the same belong to the field of electric power equipment. The low pressure metering box body structure comprises a shell, doors are hingedly connected to both sides of the open end of the shell, a fixed rod is fixedly connected to the open end of the shell, and two movable devices are arranged between the fixed rod and the back plate of the shell. When all the doors are closed, the multi-stage expansion plates can be retracted to leave a heat dissipation channel for heat dissipation inside the shell, so as to ensure the heat dissipation effect. After any door is opened, the multi-stage expansion plates corresponding to the opened door can be expanded, so that the purpose of physical isolation and electric shock prevention is effectively achieved.

Description

TECHNICAL FIELD

[0001] The application relates to a low-voltage metering box body structure and a use method, and belongs to the field of power equipment. BACKGROUND

[0002] The metering box is a commonly used power facility, and one kind of metering box is a partition metering box, which is used for separating a metering box into multiple areas through an insulating baffle, isolating a user wiring area from a live area, exposing only a non-live outgoing terminal, and greatly reducing the operation risk of non-professionals to achieve the purpose of physical isolation and electric shock prevention.

[0003] However, the existing partition metering box is mostly separated by using an integral baffle, so that the left and right ventilation openings of the metering box cannot be connected after the metering box is separated, the ventilation effect of the metering box is affected, and the heat dissipation effect in the metering box is affected, and therefore the metering box needs to be improved. SUMMARY

[0004] The application aims to solve the above problems in the background art and provide a low-voltage metering box body structure.

[0005] The application achieves the above purpose by adopting the following technical scheme.

[0006] The low-voltage metering box body structure comprises an outer shell, hinged doors are arranged on the two sides of the open end of the outer shell, a fixed rod is fixedly connected to the open end of the outer shell, and two movable devices are arranged between the fixed rod and the back plate of the outer shell.

[0007] Further, each movable device comprises a plurality of stages of telescopic plates, the fixed end of the plurality of stages of telescopic plates is fixedly connected to the back plate of the outer shell, the free end of the plurality of stages of telescopic plates abuts against the side surface of the fixed rod, a round rod is arranged along the telescopic direction of the plurality of stages of telescopic plates, one end of the round rod is connected to the back plate of the outer shell through a bearing, the other end of the round rod is provided with a round groove, the free end of the plurality of stages of telescopic plates is provided with a hole that is in sliding fit with the round rod, a transmission block is fixedly connected to the inner wall of the hole, the transmission block is in sliding fit with a spiral groove I on the outer circular surface of the round rod, a rotating plate is connected to the inside of the round groove through a bearing, one end of the rotating plate is fixedly connected to a spring, the other end of the spring is fixedly connected to a sliding rod, a sleeve is arranged on the outer side of the sliding rod, the outer wall of the sleeve is connected to the inner wall of the round groove through a coil spring, a limiting block is fixedly connected to the inner wall of the sleeve, the limiting block is in sliding fit with a sliding groove on the sliding rod, a spiral groove II is further arranged on the outer circular surface of the end of the sliding rod that is away from the round groove, and a fixed block that is in sliding fit with the spiral groove II is fixedly connected to the inner wall of the through hole of the fixed rod.

[0008] Further, when the door is closed, each sliding rod of the multi-stage retractable plate is in contact with the corresponding door, and the sliding rod is completely slid into the inside of the fixed rod.

[0009] Further, the spring is always in a compressed state.

[0010] Further, the pitch of the spiral groove II is smaller than that of the spiral groove I.

[0011] Further, the area of the multi-stage retractable plate after complete contraction is less than or equal to one third of the area when the multi-stage retractable plate is expanded.

[0012] Further, the top end of the inner wall of the opening of the shell is fixedly connected with two control devices; each door is fixedly connected with a magnet I; the free end side of each multi-stage retractable plate is fixedly connected with a magnet II; and the control device cooperates with the magnet I and the magnet II.

[0013] Further, each control device comprises a fixed shell made of non-metal; the fixed shell is fixedly connected to the shell; an inclined limiting slide is arranged on the inner wall of the fixed shell; a magnet III in sliding cooperation with the slide is arranged in the slide; a plug is fixedly connected to one side of the magnet III; the opposite ends of the two control devices are provided with through holes in communication with the corresponding slides, and the plug passes through the corresponding through hole; and the side surface of the free end of the multi-stage retractable plate is provided with a plug hole in cooperation with the corresponding plug.

[0014] Further, the magnet I and the magnet II repel the magnet III, and the repulsion force between the magnet I and the magnet III is greater than the repulsion force between the magnet II and the magnet III.

[0015] A use method of a low-voltage metering box body structure, the use method comprising the following steps:

[0016] Step one: close the door, and after the door is closed, the multi-stage retractable plate is contracted to leave enough space in the shell for air flow, so as to facilitate heat dissipation;

[0017] Step two: after one door is opened or all doors are opened, the multi-stage retractable plate corresponding to the opened door is expanded to the maximum area, and the partition in the shell is separated. Compared with the prior art, the beneficial effects of the present application are that when all doors are closed, the multi-stage retractable plate is contracted to leave a heat dissipation channel for heat dissipation inside the shell, so as to ensure the heat dissipation effect, and when any door is opened, the multi-stage retractable plate corresponding to the opened door can be expanded, effectively achieving the purpose of physical isolation and electric shock prevention. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a three-dimensional structure schematic view of a low-voltage metering box body structure of the present application;

[0019] Figure 2This is a front view of the outer shell of a low-pressure metering box structure according to the present invention;

[0020] Figure 3 yes Figure 2 Sectional view along the AA direction;

[0021] Figure 4 yes Figure 3 A magnified structural diagram of C;

[0022] Figure 5 This is a three-dimensional structural diagram of the movable device and fixing rod of a low-pressure metering box structure according to the present invention;

[0023] Figure 6 This is a front view of the free end of the multi-stage telescopic plate of a low-pressure metering box structure according to the present invention;

[0024] Figure 7 This is a front view of the fixing rod of a low-pressure metering box structure according to the present invention;

[0025] Figure 8 yes Figure 2 Sectional view along the BB direction;

[0026] Figure 9 This is a top view of a control device for a low-pressure metering box structure according to the present invention;

[0027] Figure 10 This is a schematic diagram of the state of the movable device when the door of the low-pressure metering box structure of the present invention is fully closed;

[0028] Figure 11 This is a schematic diagram of the state of the movable device when one of the doors of a low-pressure metering box structure of the present invention is opened. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] Specific implementation method one: as follows Figures 1-11 As shown in the figure, this embodiment describes a low-pressure metering box structure, including an outer shell 1; doors 6 are hinged to both sides of the opening end of the outer shell 1, and a fixing rod 3 is fixedly connected to the opening end of the outer shell 1; two movable devices 5 are provided between the fixing rod 3 and the back plate of the outer shell 1.

[0031] Each of the active devices 5 comprises a multi-stage telescopic plate 51; the fixed end of the multi-stage telescopic plate 51 is fixedly connected to the back plate of the shell 1, and the free end of the multi-stage telescopic plate 51 abuts against the side of the fixed rod 3; a round rod 52 is arranged along the telescopic direction of the multi-stage telescopic plate 51; one end of the round rod 52 is connected to the back plate of the shell 1 through a bearing, and the other end of the round rod 52 is provided with a round groove 55; the free end of the multi-stage telescopic plate 51 is provided with a hole 516 which is in sliding fit with the round rod 52, and the inner wall of the hole 516 is fixedly connected with a transmission block 54; the transmission block 54 is in sliding fit with a helical groove I 53 on the outer circular surface of the round rod 52; the inside of the round groove 55 is connected with a rotating plate 517 through a bearing, one end of the rotating plate 517 is fixedly connected with a spring 56; the other end of the spring 56 is fixedly connected with a sliding rod 57; the outer side of the sliding rod 57 is provided with a sleeve 512, the outer wall of the sleeve 512 is connected to the inner wall of the round groove 55 through a coil spring 511; the inner wall of the sleeve 512 is fixedly connected with a limiting block 513, and the limiting block 513 is in sliding fit with a sliding groove 510 on the sliding rod 57; the outer circular surface of the end of the sliding rod 57 away from the round groove 55 is further provided with a helical groove II 58; the fixed rod 3 is provided with a through hole 31, and the inner wall of the through hole 31 is fixedly connected with a fixed block 59 which is in sliding fit with the helical groove II 58. A gap is left between the two multi-stage telescopic plates 51, further ensuring the effect of physical isolation and electric shock prevention.

[0032] When the door 6 is closed, the corresponding sliding rod 57 of each of the multi-stage telescopic plates 51 is in contact with the corresponding door, and the sliding rod 57 is completely slid into the inside of the fixed rod 3.

[0033] The spring 56 is always in a compressed state.

[0034] The pitch of the helical groove II 58 is smaller than the pitch of the helical groove I 53.

[0035] The area of the multi-stage telescopic plate 51 after complete contraction is smaller than or equal to one third of the area of the multi-stage telescopic plate 51 when it is expanded, so that the multi-stage telescopic plate 51 can flow out a large enough space for heat dissipation and ventilation after contraction, and the heat dissipation effect is ensured.

[0036] The inner wall top end of the opening of the shell 1 is fixedly connected with two control devices 4; each of the doors 6 is fixedly connected with a magnet I 7; the free end side of each of the multi-stage telescopic plates 51 is fixedly connected with a magnet II 514; the control device 4 cooperates with the magnet I 7 and the magnet II 514.

[0037] Each of the control devices 4 comprises a fixed shell 41 made of non-metal; the fixed shell 41 is fixedly connected to the outer shell 1; an inclined limiting slide 42 is arranged on the inner wall of the fixed shell 41, and a magnet III 44 in sliding fit with the slide 42 is arranged in the slide 42; one side of the magnet III 44 is fixedly connected with an insertion block 43; opposite ends of the two control devices 4 are provided with through holes in communication with the corresponding slides 42, and the insertion block 43 passes through the corresponding through hole; the side surface of the free end of the multi-stage telescopic plate 51 is provided with an insertion hole 515 matched with the corresponding insertion block 43. The positions of the insertion block 43 are controlled by the magnet I 7, the magnet II 514 and the magnet III 44, so as to control whether the multi-stage telescopic plate 51 is retracted.

[0038] The magnet I 7 and the magnet II 514 repel the magnet III 44, and the repulsion force between the magnet I 7 and the magnet III 44 is greater than the repulsion force between the magnet II 514 and the magnet III 44. When the door 6 is closed, the magnet I 7 can push the magnet III 44 to move by repulsion force, so that the insertion block 43 cannot be separated from the insertion hole 515.

[0039] A use method of a low-pressure metering box body structure, the use method comprising the following steps:

[0040] Step one: close the door 6, after the door 6 is closed, the multi-stage telescopic plate 51 is retracted, enough space is left in the outer shell 3 for air flow, so as to facilitate heat dissipation;

[0041] Step two: after one of the doors 6 is opened or all the doors 6 are opened, the corresponding multi-stage telescopic plate 51 of the opened door 6 is expanded to the maximum area, and the partitions in the outer shell 3 are separated.

[0042] The working principle of the present application is that when the door 6 is closed using the device, the door 6 pushes the slide rod 57 exposed outside the fixed rod 3 to move inside the fixed rod 3. In the process of the slide rod 57 moving inside the fixed rod 3, because the inner wall of the through hole 31 on the fixed rod 3 is fixedly connected with the fixed block 59 which is in sliding fit with the spiral groove II 58, in the process of the slide rod 57 moving, the slide rod 57 will also rotate around its central axis under the influence of the fixed block 59 and the spiral groove II 58, and compress the spring 56. The slide rod 57 rotates at the same time as the slide groove 510 on its side surface, and the slide groove 510 drives the sleeve 512 to rotate through the limiting block 513, and further makes the coil spring 511 connected between the sleeve 512 and the circular groove 55 deform. At this time, because the free end of the multi-stage telescopic plate 51 is in contact with the side surface of the fixed rod 3, and the plug 43 is located in the insertion hole 515, the contraction of the multi-stage telescopic plate 51 is limited, so the coil spring 511 can only maintain the deformed state and cannot drive the multi-stage telescopic plate 51 to contract. Until the door 6 is closed, the magnet I 7 on the door 6 pushes the magnet III 44 to slide along the inclined slide 42 on the inner wall of the fixed shell 41, so that the plug 43 is separated from the insertion hole 515. Then the circular rod 52 is rotated under the drive of the coil spring 511. In the process of the circular rod 52 rotating, because the outer side of the circular rod 52 is provided with the spiral groove I 53, and the spiral groove I 53 is matched with the transmission block 54 on the inner wall of the hole 516 of the free end of the multi-stage telescopic plate 51, in the process of the circular rod 52 rotating, the free end of the multi-stage telescopic plate 51 will move to its fixed end. When the two doors 6 are completely closed, the two multi-stage telescopic plates 51 are all contracted, and further make the plurality of spaces in the shell 3 communicate, and communicate with the ventilation openings on both sides of the shell 3, to ensure the ventilation and heat dissipation effect.

[0043] When any door 6 is opened, the door 6 drives the magnet I 7 to move away from the magnet III 44, and under the elastic force of the spring 56, the slide rod 57 is pushed to move outside the fixed rod 3. The slide rod 57 will rotate in the process of moving under the influence of the fixed block 59 and the spiral groove II 58, and further drive the sleeve 512 to rotate, so that the sleeve 512 drives the circular rod 52 to rotate through the coil spring 511. In the process of the circular rod 52 rotating, the free end of the multi-stage telescopic plate 51 moves to the direction of the fixed rod 3, until the free end of the multi-stage telescopic plate 51 abuts against the side surface of the fixed rod 3. The free end of the multi-stage telescopic plate 51 also drives the magnet II 514 to move at the same time in the process of moving. When the magnet II 514 approaches the fixed shell 41, the magnet III 44 is pushed to move along the slide 42 through the repulsive force between the magnet II 514 and the magnet III 44, so that the plug 43 on the magnet III 44 moves at the same time, and penetrates through the through hole on the fixed shell and is inserted into the insertion hole 515, to complete the partition isolation.

[0044] At the same time, after the door 6 is opened, even if the operator accidentally touches the slide rod 57 and makes the slide rod 57 slide into the fixed rod 3, it will not cause the multi-stage telescopic plate 51 to contract, to ensure the safety of the user.

[0045] It is apparent to a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other embodiments without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the application being defined by the appended claims rather than by the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the features to which the reference signs are attached.

[0046] Furthermore, it should be understood that although the description is made on embodiments, not every embodiment contains only one independent technical solution, and the description is made in this way only for the sake of clarity, and a person skilled in the art should consider the description as a whole, and the technical solutions in each embodiment can also be combined appropriately to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A low-pressure metering box structure, characterized in that: Includes an outer shell (1); both sides of the opening end of the outer shell (1) are hinged with doors (6), and a fixing rod (3) is fixedly connected to the opening end of the outer shell (1); two movable devices (5) are provided between the fixing rod (3) and the back plate of the outer shell (1); Each of the aforementioned movable devices (5) includes a multi-stage telescopic plate (51); the fixed end of the multi-stage telescopic plate (51) is fixedly connected to the back plate of the outer shell (1), and the free end of the multi-stage telescopic plate (51) abuts against the side of the fixed rod (3); a round rod (52) is provided along the telescopic direction of the multi-stage telescopic plate (51); one end of the round rod (52) is connected to the back plate of the outer shell (1) through a bearing, and the other end of the round rod (52) is provided with a round groove (55); the free end of the multi-stage telescopic plate (51) is provided with a hole (516) that slides with the round rod (52), and a transmission block (54) is fixedly connected to the inner wall of the hole (516); the transmission block (54) slides with the spiral groove I (53) on the outer circumference of the round rod (52); the interior of the round groove (55) is connected to the spiral groove I (53) that slides with the spiral groove I (53) on the outer circumference of the round rod (52); the interior of the round groove (55) is connected to the spiral groove I (53) that slides with the spiral groove I (53) on the outer circumference of the round rod (52); A rotating plate (517) is connected to the bearing, and a spring (56) is fixedly connected to one end of the rotating plate (517); the other end of the spring (56) is fixedly connected to the slide rod (57); a sleeve (512) is provided on the outer side of the slide rod (57), and the outer wall of the sleeve (512) is connected to the inner wall of the circular groove (55) by a coil spring (511); a limiting block (513) is fixedly connected to the inner wall of the sleeve (512), and the limiting block (513) slides in cooperation with the sliding groove (510) on the slide rod (57); a spiral groove II (58) is also provided on the outer circular surface of the slide rod (57) away from the circular groove (55); a through hole (31) is provided on the fixed rod (3), and a fixed block (59) that slides in cooperation with the spiral groove II (58) is fixedly connected to the inner wall of the through hole (31); Two control devices (4) are fixedly connected to the top of the inner wall of the opening of the outer shell (1); a magnet I (7) is fixedly connected to each door (6); a magnet II (514) is fixedly connected to the free end side of each multi-stage telescopic plate (51); the control device (4) cooperates with magnet I (7) and magnet II (514).

2. The low-pressure metering box structure according to claim 1, characterized in that: When the door (6) is closed, the slide bar (57) corresponding to each of the multi-stage telescopic plates (51) contacts the corresponding door, and the slide bar (57) slides completely into the interior of the fixed bar (3).

3. The low-pressure metering box structure according to claim 1, characterized in that: The spring (56) is always in a compressed state.

4. The low-pressure metering box structure according to claim 1, characterized in that: The pitch of the spiral groove II (58) is smaller than the pitch of the spiral groove I (53).

5. The low-pressure metering box structure according to claim 1, characterized in that: The area of ​​the multi-level telescopic plate (51) after it is fully retracted is less than or equal to one-third of the area of ​​the multi-level telescopic plate (51) when it is unfolded.

6. The low-pressure metering box structure according to claim 1, characterized in that: Each of the control devices (4) includes a non-metallic fixed shell (41); the fixed shell (41) is fixedly connected to the outer shell (1); the inner wall of the fixed shell (41) is provided with an oblique limiting slide (42), and a magnet III (44) is provided in the slide (42) for sliding cooperation with it; a plug (43) is fixedly connected to one side of the magnet III (44); the opposite ends of the two control devices (4) are provided with through holes communicating with the corresponding slide (42), and the plug (43) passes through the corresponding through holes; the side of the free end of the multi-stage telescopic plate (51) is provided with a plug hole (515) that cooperates with the corresponding plug (43).

7. The low-pressure metering box structure according to claim 6, characterized in that: Both magnet I (7) and magnet II (514) repel magnet III (44), and the repulsive force between magnet I (7) and magnet III (44) is greater than the repulsive force between magnet II (514) and magnet III (44).

8. The method of using the low-pressure metering box structure according to claim 7, characterized in that: The method of use includes the following steps: Step 1: Close the door (6). After the door (6) is closed, the multi-stage telescopic plate (51) retracts, leaving enough space inside the outer shell (3) for airflow to facilitate heat dissipation. Step 2: Open one of the doors (6) or open all the doors (6). Then, the multi-level telescopic plate (51) corresponding to the opened door (6) is expanded to its maximum area to separate the partitions inside the outer shell (3).

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