Low-voltage metering box body structure and use method

Abstract

The invention discloses a low-voltage metering box body structure and a use method, and belongs to the field of power equipment. A housing is included; doors are hinged to the two sides of the opening end of the shell, and a fixing rod is further fixedly connected to the opening end of the shell; and two movable devices are arranged between the fixed rod and the shell back plate. When all the doors are closed, a heat dissipation channel is reserved for heat dissipation in the shell through contraction of the multi-stage telescopic plates, so that the heat dissipation effect is guaranteed, meanwhile, after any door is opened, the multi-stage telescopic plate corresponding to the opened door can be unfolded, and the purposes of physical isolation and electric shock prevention are effectively achieved.

Description

Technical Field

[0001] The invention relates to a low-voltage metering box body structure and a use method, belonging to the field of power equipment. Background Art

[0002] The meter box is a commonly used power facility. One type of meter box is a partitioned meter box, which means that the inside of the meter box is divided into multiple areas by insulating baffles, isolating the user wiring area from the live area, and only exposing the non-powered output terminals, greatly reducing the operation risks for non-professionals and achieving the purpose of physical isolation and prevention of electric shock.

[0003] However, most of the existing partitioned meter boxes use a whole partition to separate the interior of the meter box, resulting in the inability to connect the ventilation holes on the left and right sides after the interior of the meter box is divided, which affects the ventilation effect of the meter box and further affects the heat dissipation effect inside it. Therefore, improvements are made. Summary of the Invention

[0004] The purpose of the present invention is to solve the above-mentioned problems existing in the background technology and provide a low-pressure metering box body structure.

[0005] The present invention achieves the above-mentioned purpose by adopting the following technical solutions:

[0006] A low-pressure metering box body structure comprises an outer shell; doors are hinged on both sides of the outer shell opening end; a fixing rod is fixedly connected to the outer shell opening end; two movable devices are provided between the fixing rod and the outer shell back plate.

[0007] Furthermore, each of the movable devices includes a multi-stage telescopic plate; the fixed end of the multi-stage telescopic plate is fixedly connected to the back plate of the shell, and the free end of the multi-stage telescopic plate is against the side of the fixed rod; a round rod is provided along the telescopic direction of the multi-stage telescopic plate; one end of the round rod is connected to the back plate of the shell through a bearing, and the other end of the round rod is provided with a round groove; the free end of the multi-stage telescopic plate is provided with a hole that slides with the round rod, and a transmission block is fixedly connected to the inner wall of the hole; the transmission block slides with the spiral groove I on the outer surface of the round rod The inside of the circular groove is connected to a rotating plate through a bearing, and one end of the rotating plate is fixedly connected to a spring; the other end of the spring is fixedly connected to the slide rod; a sleeve is provided on the outside of the slide rod, and the outer wall of the sleeve is connected to the inner wall of the circular groove through a coil spring; a limit block is fixedly connected to the inner wall of the sleeve, and the limit block slides in cooperation with the slide groove on the slide rod; a spiral groove II is also provided on the outer circular surface of the slide rod away from the circular groove; a through hole is provided on the fixed rod, and a fixed block sliding in cooperation with the spiral groove II is fixedly connected to the inner wall of the through hole.

[0008] Furthermore, when the door is closed, the sliding rod corresponding to each of the multi-stage telescopic plates contacts the corresponding door, and the sliding rod completely slides into the interior of the fixed rod.

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

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

[0011] Furthermore, the area of ​​the multi-stage telescopic plate after being fully retracted is less than or equal to one third of the area of ​​the multi-stage telescopic plate when it is unfolded.

[0012] Furthermore, two control devices are fixedly connected to the top of the inner wall at the opening of the shell; each of the doors is fixedly connected to a magnet I; the free end side of each multi-stage telescopic plate is fixedly connected to a magnet II; the control device cooperates with magnets I and II.

[0013] Furthermore, each of the control devices includes a fixed shell made of non-metal; the fixed shell is fixedly connected to the outer shell; an oblique limiting slide is provided on the inner wall of the fixed shell, and a magnet III that slides with it is provided in the slide; an insert is fixedly connected to one side of the magnet III; the opposite ends of the two control devices are provided with through holes connected to the corresponding slides, and the insert passes through the corresponding through holes; the side of the free end of the multi-stage telescopic plate is provided with a plug hole that cooperates with the corresponding plug block.

[0014] Furthermore, the magnets I and II repel each other from the magnet III, and the repulsive force between magnet I and magnet III is greater than the repulsive force between magnet II and magnet III.

[0015] A method for using a low-pressure metering box structure, the method comprising the following steps:

[0016] Step 1: Close the door. After the door is closed, the multi-stage telescopic plate retracts, leaving enough space in the housing for air flow to facilitate heat dissipation.

[0017] Step 2: After opening one or all doors, the multi-stage retractable panels corresponding to the opened door expand to their maximum area, separating the partitions within the enclosure. Compared to the prior art, the present invention offers the following advantages: when all doors are closed, the multi-stage retractable panels retract, creating a heat dissipation channel within the enclosure to ensure effective heat dissipation. Furthermore, when any door is opened, the multi-stage retractable panels corresponding to the opened door expand, effectively achieving physical isolation and preventing electric shock. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of a low-pressure metering box body structure of the present invention;

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

[0020] Figure 3 yes Figure 2 Cross-sectional view in the AA direction;

[0021] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of C in the middle;

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

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

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

[0025] Figure 8 yes Figure 2 Cross-sectional view in the middle BB direction;

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

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

[0028] Figure 11 The present invention is a schematic diagram of a state of a movable device when one of the doors of a low-pressure metering box body structure is opened. DETAILED DESCRIPTION

[0029] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Specific implementation method 1: Figure 1-11 As shown, this embodiment records a low-pressure metering box body structure, including an outer shell 1; doors 6 are hinged on both sides of the open end of the outer shell 1, and a fixing rod 3 is also fixedly connected to the open 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 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 housing 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 housing 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 inner surface of the round groove 55 A rotating plate 517 is connected via a bearing. A spring 56 is fixedly attached to one end of the rotating plate 517. The other end of the spring 56 is fixedly connected to a slide bar 57. A sleeve 512 is provided on the outside of the slide bar 57. The outer wall of the sleeve 512 is connected to the inner wall of the circular groove 55 via a coil spring 511. A limit block 513 is fixedly attached to the inner wall of the sleeve 512, which slidably engages with the slide groove 510 on the slide bar 57. A spiral groove II 58 is also provided on the outer circumferential surface of the end of the slide bar 57 away from the circular groove 55. The fixed rod 3 has a through-hole 31, and a fixed block 59 is fixedly attached to the inner wall of the through-hole 31, which slidably engages with the spiral groove II 58. A gap is left between the two multi-stage telescopic plates 51 to further ensure physical isolation and prevent electric shock.

[0032] When the door 6 is closed, the sliding rod 57 corresponding to each of the multi-stage telescopic plates 51 contacts the corresponding door, and the sliding rod 57 completely slides into the interior of the fixed rod 3 .

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

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

[0035] The area of ​​the multi-stage telescopic plate 51 after it is fully retracted is less than or equal to one third of the area when the multi-stage telescopic plate 51 is expanded. When the multi-stage telescopic plate 51 is retracted, enough space can be left for heat dissipation and ventilation to ensure heat dissipation effect.

[0036] Two control devices 4 are fixedly connected to the top of the inner wall at the opening of the shell 1; a magnet I7 is fixedly connected to each of the doors 6; a magnet II514 is fixedly connected to the side of the free end of each of the multi-stage telescopic plates 51; the control device 4 cooperates with the magnet I7 and the magnet II514.

[0037] Each control device 4 includes a non-metallic fixed housing 41 fixedly connected to the outer housing 1. An oblique limiting slideway 42 is provided on the inner wall of the fixed housing 41, within which a magnet III 44 is positioned for sliding engagement. An insert 43 is fixedly attached to one side of the magnet III 44. Opposite ends of the two control devices 4 are provided with through-holes communicating with the corresponding slideways 42, through which the inserts 43 pass. The free ends of the multi-stage retractable plates 51 are provided with side holes 515 that engage with the corresponding inserts 43. The position of the inserts 43 is controlled by magnet I 7, magnet II 514, and magnet III 44, thereby controlling the retraction of the multi-stage retractable plates 51.

[0038] Magnets I7 and II 514 repel magnet III 44, and the repulsive force between magnet I7 and magnet III 44 is greater than the repulsive force between magnet II 514 and magnet III 44. This allows magnet I7 to push magnet III 44 forward through its repulsive force when door 6 is closed, preventing insert 43 from being unable to disengage from socket 515.

[0039] A method for using a low-pressure metering box structure, the method comprising the following steps:

[0040] Step 1: Close the door 6. After the door 6 is closed, the multi-stage telescopic plate 51 contracts, leaving enough space in the housing 3 for air flow to facilitate heat dissipation.

[0041] Step 2: After opening one of the doors 6 or opening all the doors 6 , the multi-stage telescopic plate 51 corresponding to the opened door 6 is unfolded to the maximum area, separating the partitions in the housing 3 .

[0042] The working principle of the present invention is as follows: when the device is used to close the door 6, the door 6 pushes the sliding rod 57 exposed outside the fixing rod 3 to move inside the fixing rod 3. During the process of the sliding rod 57 moving inside the fixing rod 3, a fixing block 59 that slides with the spiral groove II 58 is fixedly connected to the inner wall of the through hole 31 on the fixing rod 3. Therefore, during the movement of the sliding rod 57, the sliding rod 57 is also affected by the fixing block 59 and the spiral groove II 58, and the spring 56 is compressed. When the sliding rod 57 rotates, the sliding groove 510 on its side is driven to rotate together. The sliding groove 510 drives the sleeve 512 to rotate through the limit block 513, thereby deforming the coil spring 511 connected between the sleeve 512 and the circular groove 55. At this time, since the free end of the multi-stage telescopic plate 51 is in contact with the side of the fixing rod 3, and the insert block 43 is located in the insert hole 515, The multi-stage telescopic plate 51 is restricted from contracting, 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 I7 on the door 6 pushes the magnet III 44 to slide along the oblique slide 42 on the inner wall of the fixed shell 41, so that the plug 43 is disengaged from the insertion hole 515, and then the round rod 52 is rotated under the drive of the coil spring 511. During the rotation of the round rod 52, since the outer side of the round rod 52 is provided with a spiral groove I 53, and the spiral groove I 53 cooperates with the transmission block 54 on the inner wall of the hole 516 at the free end of the multi-stage telescopic plate 51, when the round rod 52 rotates, it drives the free end of the multi-stage telescopic plate 51 to move toward its fixed end. When the two doors 6 are fully closed, the two multi-stage telescopic plates 51 are both contracted, thereby connecting the multiple spaces in the shell 3 and connecting with the vents on both sides of the shell 3 to ensure ventilation and heat dissipation effects.

[0043] When any door 6 is opened, the door 6 drives the magnet I 7 away from the magnet III 44, and under the elastic force of the spring 56, the slide bar 57 moves toward the outside of the fixed rod 3. The slide bar 57 is affected by the fixed block 59 and the spiral groove II 58 and rotates during the movement, thereby driving the sleeve 512 to rotate together, so that the sleeve 512 drives the round rod 52 to rotate together through the coil spring 511. During the rotation of the round rod 52, the free end of the multi-stage telescopic plate 51 moves toward the direction of the fixed rod 3 until the free end of the multi-stage telescopic plate 51 is abutted against the side of the fixed rod 3. When the free end of the multi-stage telescopic plate 51 moves, it also drives the magnet II 514 to move together. When the magnet II 514 approaches the fixed shell 41, the repulsive force between the magnet II 514 and the magnet III 44 pushes the magnet III 44 to move along the slide 42, so that the plug block 43 on the magnet III 44 moves together and passes through the through hole on the fixed shell and inserts into the plug hole 515, completing the partition isolation;

[0044] At the same time, after the door 6 is opened, even if the operator accidentally touches the slide bar 57 and causes the slide bar 57 to slide into the fixed rod 3, the multi-stage telescopic plate 51 will not be retracted, thereby ensuring the safety of the user.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other configurations without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations coming within the meaning and range of equivalents of the claims are intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0046] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A low-pressure metering box structure, characterized by: It comprises a shell (1); doors (6) are hinged on both sides of the open end of the shell (1); a fixing rod (3) is fixedly connected to the open end of the shell (1); two movable devices (5) are provided between the fixing rod (3) and the back plate of the shell (1).

2. The low-pressure metering box structure according to claim 1, characterized in that: Each of the 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 housing (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 housing (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 circumferential surface of the round rod (52); the interior of the round groove (55) is provided with a hole (516) that slides with the round rod (52). The bearing is connected to a rotating plate (517), and one end of the rotating plate (517) is fixedly connected to a spring (56); 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) through a coil spring (511); a limiting block (513) is fixedly connected to the inner wall of the sleeve (512), and the limiting block (513) is slidably matched with the slide groove (510) on the slide rod (57); a spiral groove II (58) is further provided on the outer circumferential surface of one end 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) slidably matched with the spiral groove II (58) is fixedly connected to the inner wall of the through hole (31).

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

4. The low-pressure metering box structure according to claim 2, characterized in that: The spring (56) is always in a compressed state.

5. The low-pressure metering box structure according to claim 2, characterized in that: The pitch of the spiral groove II (58) is smaller than the pitch of the spiral groove I (53).

6. The low-pressure metering box structure according to claim 2, characterized in that: The area of ​​the multi-stage telescopic plate (51) after it is fully retracted is less than or equal to one third of the area of ​​the multi-stage telescopic plate (51) when it is expanded.

7. A low-pressure metering box structure according to claim 4 or 6, characterized in that: Two control devices (4) are fixedly connected to the top of the inner wall at the opening of the housing (1); a magnet I (7) is fixedly connected to each of the doors (6); a magnet II (514) is fixedly connected to the side of the free end of each of the multi-stage telescopic plates (51); and the control device (4) cooperates with the magnet I (7) and the magnet II (514).

8. The low-pressure metering box structure according to claim 7, characterized in that: Each of the control devices (4) includes a fixed shell (41) made of non-metal; the fixed shell (41) is fixedly connected to the outer shell (1); an oblique limiting slideway (42) is provided on the inner wall of the fixed shell (41), and a magnet III (44) is provided in the slideway (42) and is slidably matched with the fixed shell (1); an insert (43) is fixedly connected to one side of the magnet III (44); opposite ends of the two control devices (4) are provided with through holes connected to the corresponding slideways (42), and the insert blocks (43) pass through the corresponding through holes; and a side surface of the free end of the multi-stage telescopic plate (51) is provided with an insert hole (515) that is matched with the corresponding insert block (43).

9. The low-pressure metering box structure according to claim 8, characterized in that: The magnet I (7) and magnet II (514) both 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).

10. The method for using the low-pressure metering box structure according to claim 9, characterized in that: The method of use comprises the following steps: Step 1: closing the door (6). After the door (6) is closed, the multi-stage telescopic plate (51) contracts, leaving enough space in the housing (3) for air flow to facilitate heat dissipation; Step 2: After opening one of the doors (6) or opening all the doors (6), the multi-stage telescopic plate (51) corresponding to the opened door (6) is unfolded to the maximum area to separate the partitions in the housing (3).

Images