A drawer-style scalable modular metering box

Abstract

The application discloses a drawer type extensible modular metering box and relates to the field of metering boxes. The metering box comprises a box body, a drawer type integrated module is arranged in the box body, a viewing door matched with the drawer type integrated module is hingedly connected to the box body, four universal wheels are symmetrically arranged at the bottom of the box body in a rectangular shape, the box body comprises an a surface and a b surface, the a surface and the b surface of the box body are both open, and the a surface and the b surface of the box body are detachably provided with a side plate a and a side plate b through a splicing mechanism. The drawer type extensible modular metering box is quickly and detachably spliced and expanded between multiple metering box bodies through the open structure of the a surface and the b surface of the box body, the embedded guide groove, the embedded guide strip, the assembly groove, the assembly frame and the locking stud locking cooperation of the splicing mechanism, additional connecting pieces are not needed, the side plate a and the side plate b can be separately assembled to realize single-box independent closed use, and the metering box is suitable for the expansion needs of different metering circuits.

Description

Technical Field

[0001] This invention relates to metering box technology, and more specifically to a drawer-type expandable modular metering box. Background Technology

[0002] As the front-end equipment for electricity trade settlement, the accuracy of electricity metering boxes is directly related to the economic interests of both electricity suppliers and users, and they are widely used in residential buildings, industrial and commercial power distribution, and public power grids.

[0003] Currently, most metering boxes used in power grids are one-piece structures made of injection molding or welded metal, with fixed volume and unchangeable shape. With the increase in user expansion, centralized meter reading upgrades, and space-constrained scenarios, the one-piece box design has revealed the following shortcomings: Firstly, it has poor scalability and is difficult to expand flexibly. Traditional metering boxes have fixed functions and hardware configurations that are fixed at the factory. If it is necessary to add meters, concentrators or switches later, it is often necessary to dismantle and replace the whole box, which involves a lot of construction work, long power outage time and waste of resources.

[0004] Secondly, the assembly and disassembly are inconvenient and the connection reliability is insufficient. Although some modular metering boxes have attempted to expand capacity through splicing, their splicing structure mostly relies on bolt fastening or simple plug-in, which has problems such as cumbersome assembly and disassembly, low docking positioning accuracy, and insufficient connection strength after splicing; the joints of multiple boxes spliced ​​together have poor sealing performance, making it difficult to guarantee dust and moisture protection, which affects the long-term stable operation of internal metering devices.

[0005] Therefore, the present invention provides a drawer-type expandable modular metering box to overcome the above-mentioned shortcomings of the prior art. Summary of the Invention

[0006] The purpose of this invention is to provide a drawer-type expandable modular metering box to address the aforementioned shortcomings of the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a drawer-type expandable modular metering box, comprising a box body, wherein a drawer-type integrated module is provided inside the box body, and an inspection door adapted to the drawer-type integrated module is hinged on the box body. Four universal wheels are symmetrically installed in a rectangular shape at the bottom of the box body. The box body includes an a-side and a b-side, both of which are open-type, and both the a-side and b-side of the box body are detachably installed with a side plate and a side plate respectively through a splicing mechanism. The splicing mechanism includes symmetrically opened assembly slots on the surfaces of the box body a and b side panels. Assembly racks are installed on the surfaces of the box body b and a side panels. Embedded guide slots are opened at both the upper and lower ends of the inner wall of the assembly slots. Embedded guide strips are fixedly connected to the outer ends of the box body b and a side panels. Receiving slots are opened on the surface of the box body near the a side and the surface of the b side panel. Fixing strips are provided on the surface of the box body near the b side and the surface of the a side panel. Threaded slots are opened at both the upper and lower ends of the surface of the receiving slots. Through holes corresponding to the threaded slots are opened on the surface of the fixing strips. Locking studs are threadedly connected inside the threaded slots. The a and b sides of the box can be detachably spliced ​​to the corresponding sides of another box via the splicing mechanism.

[0008] Furthermore, the threaded end of the locking stud passes through the through hole and is threaded into the threaded groove, and the head of the locking stud abuts against the surface of the fixing strip.

[0009] Furthermore, the shape and size of the receiving groove are adapted to the fixing strip.

[0010] Furthermore, the long side openings of the upper and lower embedded guide grooves are arranged facing each other.

[0011] Furthermore, the surfaces of the a-side and b-side plates of the housing are provided with sealing grooves located at the ends of the embedded guide grooves, and the surfaces of the b-side and a-side plates of the housing are fixedly connected with sealing strips that are fixedly connected to the ends of the embedded guide strips.

[0012] Furthermore, the inner walls of both the embedded guide groove and the sealing groove are provided with sealing gaskets.

[0013] Furthermore, the shape and size of the assembly slot are adapted to the assembly frame.

[0014] Furthermore, an operating cavity is provided at the bottom of the housing. A lifting plate is slidably installed in the vertical direction inside the operating cavity. A support column corresponding to the universal wheel is fixedly connected to the bottom of the lifting plate. A slot corresponding to the universal wheel is provided at the bottom of the operating cavity. The top of the universal wheel passes through the slot and is fixedly installed at the bottom of the support column. Multiple internally threaded pipes are rotatably installed on the top of the inner wall of the operating cavity. A threaded short column that is threadedly connected to the internally threaded pipe is fixedly installed on the top of the lifting plate.

[0015] Furthermore, a first bevel gear is coaxially fixedly installed on the outside of the internally threaded tube, a worm gear is rotatably connected to the inner wall of the operating cavity, a worm wheel meshes with the outside of the worm gear, and a second bevel gear is coaxially fixedly connected to the outside of the worm wheel. The second bevel gear is rotatably connected to the inner wall of the operating cavity and meshes with the first bevel gear. An operating port corresponding to the position of the viewing door is opened on the surface of the housing near the viewing door. The end of the worm gear extends into the operating port and is fixedly installed with an adjusting wheel. All the internally threaded tubes are connected by a pulley and a transmission belt for transmission.

[0016] Furthermore, heat dissipation grooves are provided on the lower part of the side of the enclosure away from the viewing door, as well as on the lower part of the surfaces of side panel a and side panel b.

[0017] Compared with the prior art, the drawer-type expandable modular metering box provided by the present invention has the following beneficial effects: This drawer-type expandable modular metering box uses an open structure on sides A and B of the box, combined with embedded guide grooves, embedded guide strips, assembly slots, assembly racks, and locking studs in the splicing mechanism. This allows for quick and easy disassembly and splicing expansion between multiple metering boxes without the need for additional connectors. Alternatively, it can be equipped with side A and side B separately to achieve independent closed use of a single box, adapting to different metering circuit expansion needs.

[0018] 2. This drawer-type expandable modular metering box, through the alignment and fitting of the embedded guide groove, sealing groove, sealing strip, and sealing gasket, forms a continuous sealing barrier at the box splicing or side panel assembly positions, reducing the risk of dust and moisture intrusion at the splicing gaps and improving the overall protective performance of the metering box.

[0019] 3. This drawer-type expandable modular metering box is easily moved as a whole by four universal wheels at the bottom. The adjusting wheels drive the worm gear, worm wheel, second bevel gear, and first bevel gear to drive multiple internally threaded tubes to rotate synchronously. The threaded short column pushes the lifting plate and support column to realize the synchronous lifting and lowering of the universal wheels. This not only enables flexible movement of the metering box, but also allows for fine adjustment of the position and height of the metering box when expanding and docking, making the expansion and docking process of the metering box smoother. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2This is a schematic diagram of the structure of the side plate and the box body in a separated state according to an embodiment of the present invention; Figure 3 Provided for embodiments of the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 Provided for embodiments of the present invention Figure 2 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the a-side plate structure provided in an embodiment of the present invention; Figure 6 Provided for embodiments of the present invention Figure 5 Enlarged structural diagram at point C; Figure 7 This is a schematic diagram of the b-side plate separated from the box body according to an embodiment of the present invention; Figure 8 Provided for embodiments of the present invention Figure 7 Enlarged structural diagram at point D; Figure 9 This is a schematic diagram of the b-side plate structure provided in an embodiment of the present invention; Figure 10 Provided for embodiments of the present invention Figure 9 Enlarged structural diagram at point E; Figure 11 This is a schematic diagram of the box's expanded state structure provided in an embodiment of the present invention; Figure 12 This is a partial cross-sectional view of the box structure provided in an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures: 1. Cabinet; 11. Drawer-type integrated module; 12. Viewing door; 13. Casters; 2. Side a; 21. Side b; 22. Side a; 23. Side b; 3. Embedded guide groove; 31. Embedded guide strip; 32. Receiving groove; 33. Fixing strip; 34. Threaded groove; 35. Through hole; 36. Locking stud; 37. Assembly groove; 38. Assembly rack; 4. Sealing groove; 41. Sealing strip; 5. Operating cavity; 51. Lifting plate; 52. Support column; 53. Internally threaded pipe; 54. Threaded short column; 55. First bevel gear; 56. Worm gear; 57. Worm wheel; 58. Second bevel gear; 59. Adjusting wheel; 6. Heat dissipation groove. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. Example

[0024] Please see Figures 1-12A drawer-type expandable modular metering box includes a box body 1. Inside the box body 1 is a drawer-type integrated module 11, which can be pulled out along the depth of the box body 1. This module is used to integrate and install metering and distribution devices such as energy meters, concentrators, and switches, facilitating daily inspection, wiring, and maintenance. A viewing door 12, adapted to the drawer-type integrated module 11, is hinged to the box body 1. The viewing door 12 can be opened to the side to expose the operating surface of the drawer-type integrated module 11.

[0025] The bottom of the box 1 is symmetrically equipped with four universal wheels 13 in a rectangular shape, which allows the box 1 to move flexibly. The box 1 includes a side 2 and a side 21. Both sides 2 and 21 of the box 1 are open. Both sides 2 and 21 of the box 1 are detachably equipped with side panels 22 and 23 via splicing mechanisms. The sides 2 and 21 of the box 1 can be detachably spliced ​​with the corresponding side of another box 1 via splicing mechanisms.

[0026] The splicing mechanism includes symmetrically arranged assembly slots 37 on the surfaces of the box body 1a surface 2 and b side plate 23. Assembly frames 38 are installed on the surfaces of the box body 1b surface 21 and a side plate 22. The shape and size of the assembly slots 37 are adapted to the assembly frames 38, allowing the assembly frames 38 to be completely fitted inside the assembly slots 37. Embedded guide grooves 3 are provided at both the upper and lower ends of the inner wall of the assembly slots 37. The long side openings of the two embedded guide grooves 3 face each other. Embedded guide strips 31 are fixedly connected to the outer ends of the box body 1b surface 21 and a side plate 22. Receiving slots 32 are provided on the surface of the box body 1 near the a surface 2 and on the surface of the b side plate 23. The shape and size of the receiving slots 32 are adapted to the fixing strips 33, allowing the fixing strips 33 to be completely fitted into the receiving slots 32. A fixing strip 33 is provided on the surface of the housing 1 near the b-side 21 and on the a-side plate 22. Threaded grooves 34 are provided at both the upper and lower ends of the receiving groove 32. Through holes 35 corresponding to the threaded grooves 34 are provided on the surface of the fixing strip 33. A locking stud 36 is threaded into the threaded groove 34. The threaded end of the locking stud 36 passes through the through hole 35 and is threaded into the threaded groove 34, with the head of the locking stud 36 abutting against the surface of the fixing strip 33. After assembly, the fixing strip 33 is embedded in the receiving groove 32, and the threaded end of the locking stud 36 passes through the through hole 35 and is threaded into the threaded groove 34, with the head of the locking stud 36 abutting against the surface of the fixing strip 33, thereby reliably locking the mating surfaces.

[0027] To improve the dust and moisture protection performance after multiple boxes are assembled, sealing grooves 4 located at the ends of embedded guide grooves 3 are provided on the surfaces of side a 2 and side b 23 of box 1. Sealing strips 41, which are fixedly connected to the ends of embedded guide strips 31, are also fixedly connected to the surfaces of side b 21 and side a 22 of box 1. When the embedded guide strip 31 slides into the embedded guide groove 3, the sealing strip 41 is simultaneously pressed into the sealing groove 4. Sealing gaskets are provided on the inner walls of both the embedded guide groove 3 and the sealing groove 4. Through the interference fit between the sealing strip 41 and the sealing gasket, the splicing seams are filled, reducing the risk of external dust and moisture intruding into the interior of box 1, which is conducive to the long-term stable operation of metering devices.

[0028] To facilitate the smooth expansion and assembly of the metering box, an operating cavity 5 is provided at the bottom of the box body 1. A lifting plate 51 is slidably installed in the vertical direction inside the operating cavity 5. A support column 52 corresponding to the universal wheel 13 is fixedly connected to the bottom of the lifting plate 51. A slot corresponding to the universal wheel 13 is provided at the bottom of the operating cavity 5. The top of the universal wheel 13 passes through the slot and is fixedly installed at the bottom of the support column 52. Multiple internally threaded tubes 53 are rotatably installed on the top of the inner wall of the operating cavity 5. A threaded short column 54 that is threadedly connected to the internally threaded tube 53 is fixedly installed on the top of the lifting plate 51.

[0029] Furthermore, a first bevel gear 55 is coaxially fixedly installed on the outside of the internally threaded tube 53. A worm gear 56 is rotatably connected to the inner wall of the operating cavity 5. A worm wheel 57 meshes with the outside of the worm gear 56. A second bevel gear 58 is coaxially fixedly connected to the outside of the worm wheel 57. The second bevel gear 58 is rotatably connected to the inner wall of the operating cavity 5 and meshes with the first bevel gear 55. An operating port corresponding to the position of the viewing door 12 is opened on the surface of the housing 1 near the viewing door 12. The end of the worm gear 56 extends into the operating port and is fixedly installed with an adjusting wheel 59. All internally threaded tubes 53 are connected by a pulley and a transmission belt for transmission.

[0030] When two boxes 1 need to be spliced ​​during expansion, if the flatness of the bearing surface of box 1 is insufficient, the worm gear 56 can be manually rotated during the docking of the two boxes 1 to make the caster wheel 13 move relative to the box 1. This allows the position and height of the box 1 to be docked to be adjusted so that it can be adapted to the position and height of the original box 1, making the docking process smoother. When two non-fixed boxes 1 are extended and connected, the universal wheels 13 can also make the movement of the boxes 1 more flexible, thus facilitating the extension and connection work. Furthermore, after the extension is completed, the position of the entire box 1 can be moved according to actual needs, making it more flexible to use.

[0031] To ensure heat dissipation of internal components, heat dissipation grooves 6 are provided on the lower side of the enclosure 1 away from the viewing door 12 and on the lower surface of side panel 22 and side panel 23. The heat dissipation grooves 6 penetrate the enclosure 1 or the side panel wall, forming a ventilation path with bottom air intake and side lower air exhaust, which is conducive to the dissipation of heat from internal components and improves long-term operational reliability.

[0032] In daily single-use operations, the openings on the a-side 2 and b-side 21 of the box body 1 are sealed by the cooperation of the a-side plate 22 and the b-side plate 23, forming a complete metering box body, which can meet the needs of daily use.

[0033] When the metering box needs to be expanded, the a-side plate 22 at the a-side 2 of the used box 1 is removed, and the b-side plate 23 at the b-side 21 of the box 1 to be spliced ​​is removed, so that the a-side 2 and b-side 21 of the two boxes 1 are facing each other. They are then connected to the assembly frame 38 through the mounting grooves 37 on their respective surfaces, and the embedded guide strips 31 slide in along the embedded guide grooves 3 to achieve guidance and positioning. Then, the fixing strips 33 are embedded in the receiving grooves 32 and the locking studs 36 are screwed into the threaded grooves 34 through the through holes 35 to lock them in place. In this way, the two boxes 1 are joined together horizontally to form an expanded metering box unit. If further expansion is required, more boxes 1 can be spliced ​​together in the same way.

[0034] In this assembly, the sealing grooves 4, sealing strips 41, and sealing gaskets on the corresponding surfaces also function to ensure the dustproof, moisture-proof, and airtight seal of the splicing joints. Each housing 1 can still independently possess casters 13 and a lifting mechanism, allowing it to be moved to the target position before assembly or moved as a whole after assembly. Once in position, the casters 13 can be retracted and the unit secured to the ground. This method allows for flexible determination of the number of units to be assembled based on the on-site power consumption, eliminating the need to replace the entire unit and reducing the amount of expansion work and modification costs.

[0035] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A drawer-type expandable modular metering box, comprising a box body (1), wherein a drawer-type integrated module (11) is disposed inside the box body (1), and a viewing door (12) adapted to the drawer-type integrated module (11) is hinged to the box body (1), characterized in that, The bottom of the box (1) is symmetrically equipped with four universal wheels (13) in a rectangular shape. The box (1) includes a side (2) and a side (21). Both the a side (2) and the b side (21) of the box (1) are open. Both the a side (2) and the b side (23) of the box (1) are detachably installed through a splicing mechanism. The splicing mechanism includes symmetrically arranged assembly slots (37) on the surfaces of the box body (1) a-side (2) and b-side plate (23). Assembly racks (38) are installed on the surfaces of the box body (1) b-side (21) and a-side plate (22). Embedded guide slots (3) are provided at both the upper and lower ends of the inner wall of the assembly slots (37). Embedded guide strips (31) are fixedly connected to the outer ends of the box body (1) b-side (21) and a-side plate (22). The surface of the box body (1) near a A receiving groove (32) is provided on one end of the face (2) and the surface of the b side plate (23). A fixing strip (33) is provided on the surface of the box body (1) near the b face (21) and the surface of the a side plate (22). A threaded groove (34) is provided at both the upper and lower ends of the receiving groove (32). A through hole (35) corresponding to the threaded groove (34) is provided on the surface of the fixing strip (33). A locking stud (36) is threaded inside the threaded groove (34). The a-side (2) and b-side (21) of the box (1) can be detachably spliced ​​with the corresponding side of another box (1) through the splicing mechanism.

2. The drawer-type expandable modular metering box according to claim 1, characterized in that, The threaded end of the locking stud (36) passes through the through hole (35) and is threaded into the threaded groove (34), and the head of the locking stud (36) abuts against the surface of the fixing strip (33).

3. The drawer-type expandable modular metering box according to claim 1, characterized in that, The shape and size of the receiving groove (32) are adapted to the fixing strip (33).

4. A drawer-type expandable modular metering box according to claim 1, characterized in that, The long side openings of the two embedded guide grooves (3) are arranged facing each other.

5. A drawer-type expandable modular metering box according to claim 4, characterized in that, The a-side (2) and b-side plate (23) of the box body (1) are provided with sealing grooves (4) located at the end of the embedded guide groove (3), and the b-side (21) and a-side plate (22) of the box body (1) are fixedly connected with sealing strips (41) that are fixedly connected to the end of the embedded guide strip (31).

6. A drawer-type expandable modular metering box according to claim 5, characterized in that, The inner walls of the embedded guide groove (3) and the sealing groove (4) are both provided with sealing gaskets.

7. A drawer-type expandable modular metering box according to claim 1, characterized in that, The shape and size of the assembly slot (37) are adapted to the assembly frame (38).

8. A drawer-type expandable modular metering box according to claim 1, characterized in that, An operating cavity (5) is provided at the bottom of the box (1). A lifting plate (51) is slidably installed in the vertical direction inside the operating cavity (5). A support column (52) corresponding to the universal wheel (13) is fixedly connected to the bottom of the lifting plate (51). A slot corresponding to the universal wheel (13) is provided at the bottom of the operating cavity (5). The top of the universal wheel (13) passes through the slot and is fixedly installed at the bottom of the support column (52). Multiple internal threaded tubes (53) are rotatably installed on the top of the inner wall of the operating cavity (5). A threaded short column (54) that is threadedly connected to the internal threaded tube (53) is fixedly installed on the top of the lifting plate (51).

9. A drawer-type expandable modular metering box according to claim 8, characterized in that, The first bevel gear (55) is coaxially fixedly installed on the outside of the internally threaded tube (53). The inner wall of the operating cavity (5) is rotatably connected to the worm (56). The worm gear (56) is meshed with the worm wheel (57). The worm wheel (57) is coaxially fixedly connected to the outside of the worm gear (57). The second bevel gear (58) is rotatably connected to the inner wall of the operating cavity (5) and meshes with the first bevel gear (55). The surface of the box (1) near the viewing door (12) has an operating port corresponding to the position of the viewing door (12). The end of the worm gear (56) extends into the operating port and is fixedly installed with an adjusting wheel (59). All the internally threaded tubes (53) are connected by a pulley and a transmission belt for transmission.

10. A drawer-type expandable modular metering box according to claim 1, characterized in that, Heat dissipation grooves (6) are provided on the lower side of the enclosure (1) away from the viewing door (12) and on the lower surface of side plate (22) and side plate (23).

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