A low-voltage power distribution cabinet

Abstract

The application discloses a low-voltage power distribution cabinet, which comprises a cabinet body, a frame, a limiting assembly, an adjusting assembly and a vertical plate arranged in the cabinet body, two frames are symmetrically arranged on the inner walls of the cabinet body, each frame is composed of a plurality of vertical frame columns which are vertically overlapped, the limiting assembly is equidistantly arranged on the inner wall of the cabinet body and is used for limiting and fixing the overlapped positions of every two vertical frame columns, the limiting assembly comprises a locating piece and a plug-in piece, the locating piece is penetrated through the vertical frame column in the direction of pushing the frame into the cabinet body, and the integral frame originally fixed in the power distribution cabinet is changed into a multi-section combined vertical frame column structure, in the installation process, the staff does not need to squeeze into the inside of the cabinet body, can install the relays and other devices required to be installed on each vertical frame column on the platform outside the power distribution cabinet, and then the vertical frame column with the assembled relays is assembled into the power distribution cabinet after all the relays are installed and checked.

Description

Technical Field

[0001] The invention belongs to the technical field of power distribution cabinets, and in particular relates to a low-voltage power distribution cabinet. Background Art

[0002] Low-voltage power distribution cabinets are key equipment for power distribution and control in power systems. They distribute incoming low-voltage power to multiple branches as needed through protective components such as circuit breakers, contactors, and fuses, providing stable power for lighting, power equipment, and control systems in factories, buildings, and computer rooms. Their structure generally includes a cabinet, busbars, switching elements, metering instruments, and signal indicators. They offer functions such as short-circuit and overload protection, leakage monitoring, and remote control. They ensure power safety while enabling flexible expansion through modular design. They are core devices for achieving both centralized management and decentralized power supply in modern electrical engineering.

[0003] In the current design and assembly process of power distribution cabinets, according to the established process, workers need to install relays and other components one by one onto the frame inside the distribution cabinet. However, due to the structural characteristics of the distribution cabinet, during the installation process, workers can only enter the cabinet to perform operations. This method of installation directly inside the cabinet has caused many problems in actual operation. Especially when the number of relays to be installed is large and large, and these components are located at the bottom of the cabinet, the installation difficulty for workers is greatly increased. It is necessary to maintain a squatting position for a long time, so the body is under great pressure. Not only is it easy to feel tired, but the long-term bending and squatting movements pose a potential threat to the health of workers. In addition, the entire installation time is too long, which greatly reduces the efficiency and quality of the installation work. It is urgent to optimize and improve the existing installation method. Summary of the Invention

[0004] The purpose of the present invention is to provide a low-voltage power distribution cabinet to solve the problems of inconvenient installation, labor-intensive and low work efficiency when assembling relays and other devices in the distribution cabinet proposed in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a low-voltage power distribution cabinet, comprising a cabinet body, wherein a frame, a limit assembly, an adjustment assembly and a riser are provided inside the cabinet body;

[0006] There are two frames, which are symmetrically arranged on the inner walls of both sides of the cabinet; each frame is composed of multiple vertical frame columns overlapped up and down;

[0007] The limiting components are fixedly arranged on the inner wall of the cabinet at equal distances, and limit and fix the overlapping position of every two vertical frame columns;

[0008] Wherein, the limiting component includes a positioning member and a plug-in member;

[0009] The alignment piece penetrates the vertical frame column in the direction in which the frame is pushed into the cabinet body, and the plug-in piece penetrates the vertical frame column in the direction perpendicular to the alignment piece after the frame is aligned.

[0010] The adjusting components are symmetrically arranged on the inner side of the limiting components, and each single limiting component corresponds to two adjusting components;

[0011] The vertical plates are arranged at the upper and lower ends of the inner side of each limiting assembly and are fixed through the frame. The inner side surface of the top of the vertical plate is provided with a tooth groove;

[0012] The vertical plate and the connector are both in transmission connection with the adjustment component, and extend or retract when the adjustment component rotates clockwise or counterclockwise.

[0013] As a preferred technical solution in the present invention, support frames are equidistantly fixed on the inner wall of the cabinet and are staggered with the limit components. The end position of each support frame is movably penetrated by the vertical plate at the corresponding position, and a bottom frame is also fixed at the upper and lower end surfaces inside the cabinet. The vertical frame columns at the upper and lower ends of the frame are respectively slid into the bottom frame at the corresponding positions.

[0014] As a preferred technical solution in the present invention, a mounting plate is further provided between the vertical frame columns on both sides of the cabinet body, wherein a strip-shaped groove is provided on the surface of the mounting plate. When assembling the mounting plate and the vertical frame column, the mounting plate is inserted into a whole groove on the side of the vertical frame column, and then the connection between the two is penetrated by a bolt, and a nut is screwed on the end of the bolt to achieve a fixed connection between the vertical frame column and the mounting plate. A plurality of holes are provided on the surface of the mounting plate, which can realize the assembly of devices such as relays. The vertical frame column, the mounting plate, the support frame, the bottom frame, and the limit assembly are made of the same material, all of which are made of cold-rolled steel plates, and the surface is anti-corrosion by zinc spraying. The upper and lower end surfaces of the vertical frame column are provided with square holes for the penetration of the positioning piece and the limit holes for the penetration of the plug-in piece; through holes are also provided on the upper and lower end surfaces of the vertical frame column;

[0015] The limiting hole is located above the square hole; the through hole and the square hole are opened in the same direction, and the center of the limiting hole is located in the same plane as the center of the limiting hole;

[0016] A side frame is fixedly provided on one side of the vertical frame column, and the side frame is slidably inserted into the supporting frame; a slot for the vertical plate to pass through is provided on the side frame.

[0017] As a preferred technical solution of the present invention, the alignment member includes a limit frame, a fixing plate, and a square column;

[0018] The limiting frame is in an inverted shape and half-wraps the three sides of the vertical frame column; one of the inner walls of the limiting frame is provided with a hole for the plug-in component to pass through, and the other inner wall is provided with a hole for the extended plug-in component to be inserted. The hole at this position is used to limit the position of one end of the plug-in component to avoid the phenomenon that one end of the plug-in component is not plugged into any structure and may cause an unstable connection;

[0019] The fixing plate is integrally formed on the inner side of the limiting frame, and the fixing plate is fixed to the inner wall of the cabinet;

[0020] There are two square columns, which are fixed on the inner side of the limiting frame. The two square columns can penetrate and align two adjacent vertical frame columns, and the square columns are connected with the square holes.

[0021] As a preferred technical solution of the present invention, the connector includes a push column and an insert rod;

[0022] There are two push posts, which are symmetrically passed through the inner side of the limit frame; the square post is located on the inner side of the push post; a tooth groove is provided on the end face of the square post away from the fixed plate;

[0023] The insertion rod is located on the inner side of the vertical frame column and movably penetrates the limiting hole; one end of the insertion rod abuts against the end of the push column, and when the push column is extended, the other end synchronously penetrates the limiting hole to the outside of the vertical frame column and is snapped into the inside of the limiting frame.

[0024] As a preferred technical solution of the present invention, an adjustment slot is provided in the middle of the insertion rod, and a limit rod is also passed through the interior of the adjustment slot. The cross-section of the area where the limit rod and the adjustment slot pass through is square. The limit rod is arranged parallel to the square column. Through the arrangement of the limit rod, it can be ensured that the insertion rod will not be separated from the vertical frame column. At the same time, the square shape of the middle part of the limit rod can ensure that the insertion rod can only extend and retract in the horizontal direction without rotating. Both ends of the limit rod pass through the through hole, and the two are fixedly connected;

[0025] A hole with a spiral groove is provided in the middle of the limit rod, and a spring 2 is screwed into the hole with the spiral groove. By screwing the spring 2 into the limit rod to connect it, the length of the spring 2 can be adjusted, and the excess length can be cut off by pressure so that the length of the spring 2 is equal to the length of the hole with the spiral groove. At the same time, it can also ensure that the installation position of the spring 2 and the limit rod will not change, and the two ends of the spring 2 are against the inner walls of the two sides of the adjusting groove; when the insertion rod is pushed by the push column, the insertion rod will move along the limit rod and squeeze one end of the spring 2. At this time, one end of the spring 2 will generate a rebound force. When the subsequent push column no longer presses against the insertion rod, the insertion rod can be returned to its original position with the help of the rebound of the spring 2.

[0026] As a preferred technical solution of the present invention, the adjustment assembly includes a transmission rod, a support seat, a toothed disc, and a columnar body with toothed grooves;

[0027] The transmission rod is arranged parallel to the support frame;

[0028] The support base is sleeved on the transmission rod and is integrally mounted on the inner wall of the cabinet. The transmission rod is supported and mounted by the support base, thereby avoiding a suspended arrangement of the support base.

[0029] The toothed disc is formed at one end of the transmission rod, and a locking piece is provided above the toothed disc to limit its own rotation;

[0030] The column with tooth grooves is fixedly arranged at the other end of the transmission rod, and an area is formed between the push column and the adjacent vertical plate. The column with tooth grooves is located in this area and meshes with the tooth groove positions of the push column and the vertical plate respectively; the side of the vertical plate without tooth grooves is always in contact with the inner side of the limit frame, that is, during the entire lifting process of the vertical plate, it will be in contact with the inner side of the limit frame, and in conjunction with the subsequent column with tooth grooves, the vertical plate can be limited to avoid the vertical plate from falling directly.

[0031] As a preferred technical solution of the present invention, the locking member includes a horizontal plate, a clamping plate, a spring and a stud;

[0032] The horizontal plate is fixed on the inner wall of the cabinet; and the top of the stud is fixed on the bottom end surface of the horizontal plate;

[0033] The bottom of one end of the card plate is V-shaped and extends downwardly to be clamped in the tooth groove of the toothed disc. The V-shaped area of ​​the card plate is clamped with the tooth groove of the toothed disc, which can lift the card plate under the rotation of the toothed disc, and the top of the card plate is movably penetrated by the stud. A nut is screwed on the bottom of the stud for limiting the connection between the card plate and the stud to prevent the card plate from falling. The spring set is arranged on the stud, and both ends are respectively abutted against the cross plate and the card plate when the transmission rod is rotated. The toothed disc will push the top of the card plate up. At this time, the card plate will move upward along the stud and compress the spring. Whenever the card plate passes a tooth groove on the toothed disc, it will be rebounded by the rebound spring and re-engaged in the toothed disc, thereby ensuring that the toothed disc is limited at any angle. When the toothed disc is in the limited state, the column with the tooth groove will not rotate. Since the other side of the vertical plate is fitted on the limit frame, the vertical plate can be limited to prevent it from falling.

[0034] As a preferred technical solution in the present invention, a threaded hole is further provided at one end of the bottom frame facing the interior of the cabinet. After the vertical frame column is limited, the bottom frame is located on the outside of the vertical frame column. Since the top of the uppermost vertical frame column and the bottom of the lowermost vertical frame column have no unlimited position structure, the top of the uppermost vertical frame column and the bottom of the lowermost vertical frame column can be counteracted by screwing bolts into the threaded holes, thereby improving the installation stability. At the same time, a small number of bolts are used for limiting the position, which also facilitates the overall disassembly and assembly.

[0035] As a preferred technical solution of the present invention, the front surface of the cabinet is further provided with a cabinet door, and the two are connected by a hinge;

[0036] The rear part of the cabinet is hollowed out, and a back panel is provided inside the hollowed out part. The back panel is not marked and is detachable so that after the relay is installed, wiring can be done at the rear part of the cabinet as needed. In actual applications, the back panel and the hollowed-out structure can also be removed.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] In the present invention, the integrated frame originally fixed in the power distribution cabinet is changed into a multi-section vertical frame column structure. During the installation process, the staff does not need to squeeze into the cabinet. The relays and other devices required for each section of the vertical frame column can be installed on the platform outside the power distribution cabinet first. After all the relays are installed and checked, the entire section of the vertical frame column assembled with relays is assembled into the power distribution cabinet in an orderly manner. This method is more effective when the number of installed relays is large, the volume is large, and they are located at the top and bottom of the cabinet. In order to ensure the stability of the multi-section vertical frame column after assembly, a corresponding limit assembly is added at the connection between each two sections of the vertical frame column, which can enable the sections of the vertical frame column to be tightly and firmly connected together, avoiding the normal operation of the relays affected by the shaking or displacement of the vertical frame column, and providing a solid guarantee for the stable and safe operation of the power distribution cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the overall structure of the low-voltage power distribution cabinet;

[0040] Figure 2 This is the internal schematic diagram of the low-voltage power distribution cabinet;

[0041] Figure 3 for Figure 2 Rear view after removing the back plate;

[0042] Figure 4 It is a connection diagram of the limit component and the adjustment component;

[0043] Figure 5 for Figure 4 A magnified schematic diagram of area A in the middle;

[0044] Figure 6 This is a rear view of the connection between the limit assembly and the adjustment assembly;

[0045] Figure 7 It is a structural diagram of the limit component;

[0046] Figure 8 It is a structural diagram of the frame column;

[0047] Figure 9 Schematic diagram of the structure of the limit rod;

[0048] Figure 10 Schematic diagram of the structure of the bottom frame;

[0049] Figure 11 for Figure 6 Schematic diagram of the enlarged area B.

[0050] In the picture:

[0051] 100, cabinet body; 101, cabinet door; 102, support frame; 103, bottom frame; 103a, threaded hole; 104, cross plate; 105, clamping plate; 106, spring 1; 107, stud;

[0052] 200, vertical frame column; 200a, square hole; 200b, through hole; 200c, limit hole; 201, mounting plate; 202, side frame; 202a, slot; 203, insertion rod; 203a, adjustment slot; 204, second spring; 205, limit rod; 205a, hole with spiral groove;

[0053] 300, limit assembly;

[0054] 301, limit frame; 301a, socket; 302, push column; 303, fixing plate; 304, square column;

[0055] 400, regulating component;

[0056] 401, transmission rod; 402, support seat; 403, toothed disc; 404, columnar body with toothed grooves;

[0057] 500. Vertical board. DETAILED DESCRIPTION

[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0059] See also Figures 1 to 11 The present invention provides a technical solution: a low-voltage power distribution cabinet, comprising a cabinet body 100, wherein a frame, a limit assembly 300, an adjustment assembly 400 and a vertical plate 500 are provided inside the cabinet body 100;

[0060] There are two frames, which are symmetrically arranged on the inner walls of the cabinet 100 on both sides; each frame is composed of multiple vertical frame columns 200 overlapped up and down;

[0061] The limiting components 300 are fixedly arranged on the inner wall of the cabinet 100 at equal distances, and limit and fix the overlapping position of every two vertical frame columns 200;

[0062] The limiting assembly 300 includes a positioning member and a plug-in member;

[0063] The alignment piece penetrates the vertical frame column 200 in the direction in which the frame is pushed into the cabinet 100, and the connector penetrates the vertical frame column 200 in the direction perpendicular to the alignment piece after the frame is aligned.

[0064] The adjusting components 400 are symmetrically arranged on the inner side of the limiting components 300, and each limiting component 300 corresponds to two adjusting components 400;

[0065] The vertical plate 500 is arranged at the upper and lower ends of the inner side of each limiting component 300 and is fixed through the frame. The inner side surface of the top of the vertical plate 500 is provided with a tooth groove. Figure 11 ;

[0066] The vertical plate 500 and the connector are both in transmission connection with the adjustment assembly 400 , and extend or retract when the adjustment assembly 400 rotates clockwise or counterclockwise.

[0067] In this embodiment, refer to Figure 2 and Figure 3 The inner wall of the cabinet 100 is fixed with support frames 102 equidistantly arranged and staggered with the limit components 300. The end position of each support frame 102 is movably penetrated by the vertical plate 500 at the corresponding position, and the bottom frame 103 is also fixed at the upper and lower end surfaces inside the cabinet 100. The bottom frame 103 at the upper end surface inside the cabinet 100 is not shown in the figure. The vertical frame columns 200 at the upper and lower ends of the frame are respectively slid into the bottom frame 103 at the corresponding positions.

[0068] In this embodiment, refer to Figure 2 and Figure 3 , a mounting plate 201 is further provided between the vertical frame columns 200 on both sides of the cabinet 100, wherein a strip-shaped groove is provided on the surface of the mounting plate 201. In the assembly of the mounting plate 201 and the vertical frame column 200, reference is made to Figure 4 and Figure 8, insert the mounting plate 201 into a whole groove on the side of the vertical frame column 200, then penetrate the connection between the two with a bolt, and screw a nut on the end of the bolt to achieve a fixed connection between the vertical frame column 200 and the mounting plate 201, and a plurality of holes are opened on the surface of the mounting plate 201, which can realize the assembly of devices such as relays. Among them, the vertical frame column 200, the mounting plate 201, the support frame 102, the bottom frame 103, and the limit assembly 300 are made of the same material, all of which are made of cold-rolled steel plates, and the surface is anti-corrosion by zinc spraying. The upper and lower end surfaces of the vertical frame column 200 are provided with square holes 200a for the positioning parts to pass through, and limit holes 200c for the connectors to pass through; through holes 200b are also opened on the upper and lower end surfaces of the vertical frame column 200;

[0069] The limiting hole 200c is located above the square hole 200a; the through hole 200b is opened in the same direction as the square hole 200a, and the center of the limiting hole 200c is located in the same plane as the center of the limiting hole 200c;

[0070] A side frame 202 is fixedly provided on one side of the vertical frame column 200 , and the side frame 202 is slidably inserted into the support frame 102 ; a slot 202 a is provided on the side frame 202 for the vertical plate 500 to pass through.

[0071] In this embodiment, refer to Figure 4 、 Figure 6 、 Figure 7 , the positioning member includes a limit frame 301, a fixing plate 303, and a square column 304;

[0072] The limiting frame 301 is in an inverted shape and half-wraps the three sides of the vertical frame column 200. One inner wall of the limiting frame 301 is provided with a through hole 301a for the plug-in component to pass through, and the other inner wall is provided with a hole for the extended plug-in component to be inserted. The hole is not shown in the figure. The hole at this position is used to limit the position of one end of the plug-in component to prevent the plug-in component from being inserted into any structure and causing an unstable connection.

[0073] The fixing plate 303 is integrally formed on the inner side of the limiting frame 301 , and the fixing plate 303 is fixed to the inner wall of the cabinet 100 ;

[0074] There are two square columns 304 , which are fixed on the inner side of the limiting frame 301 . The two square columns 304 can penetrate and align two adjacent vertical frame columns 200 . The square columns 304 are connected to the square holes 200 a .

[0075] In this embodiment, refer to Figure 7 , the connector includes a push pin 302 and an insert rod 203;

[0076] The push column 302 is provided with two and symmetrically penetrates the inner side of the limiting frame 301; the square column 304 is inside the push column 302; the end face of the square column 304 away from the fixed plate 303 is provided with a tooth groove;

[0077] The plug rod 203 is inside the vertical frame column 200 and movably penetrates the limiting hole 200c; Figure 7 The state after removing the vertical frame column 200 is shown in the figure, which mainly reflects the position of the plug rod 203 inside the limiting frame 301; one end of the plug rod 203 abuts against the end of the push column 302, and the other end penetrates the limiting hole 200c to the outside of the vertical frame column 200 and is clamped into the inside of the limiting frame 301 when the push column 302 is extended.

[0078] In the embodiment, referring to Figure 7 and Figure 9 , the middle part of the plug rod 203 is provided with an adjusting groove 203a, and a limiting rod 205 movably penetrates the adjusting groove 203a; the cross section of the area where the limiting rod 205 movably penetrates the adjusting groove 203a is square; the limiting rod 205 is parallel to the square column 304; through the arrangement of the limiting rod 205, it can be ensured that the plug rod 203 will not be separated from the vertical frame column 200; at the same time, through the square shape of the middle part of the limiting rod 205, it can be ensured that the plug rod 203 only extends and retracts in the horizontal direction and will not rotate; the two ends of the limiting rod 205 penetrate into the through hole 200b and are fixedly connected; specifically, the two ends of the limiting rod 205 can be fixed by spot welding; only the two ends of the limiting rod 205 are fixed with the through hole 200b, which can ensure that the limiting rod 205 will not rotate; in actual assembly, the limiting rod 205 can be assembled by welding a square block and two cylinders; first, the square block is placed in the vertical frame column 200, then the two cylinders are inserted into the through hole 200b, and finally the two ends of the cylinders are welded with the through hole 200b and the square block, thereby forming the limiting rod 205;

[0079] The middle part of the limiting rod 205 is provided with a hole 205a with a spiral groove, and a spring 204 is screwed into the hole 205a with a spiral groove; the spring 204 is connected with the limiting rod 205 by screwing; the length of the spring 204 can be adjusted; the excess length is cut by pressure, so that the length of the spring 204 is equal to the length of the hole 205a with a spiral groove; at the same time, it can also ensure that the installation position of the spring 204 and the limiting rod 205 will not change; the two ends of the spring 204 abut against the inner walls of the two sides of the adjusting groove 203a; when the plug rod 203 is pushed by the push column 302, the plug rod 203 will move along the limiting rod 205 and press one end of the spring 204; at this time, the one end of the spring 204 will produce a rebound force; when the push column 302 no longer abuts against the plug rod 203, the plug rod 203 can be returned to the original position with the help of the rebound of the spring 204.

[0080] In this embodiment, refer to Figure 4 、 Figure 6 、 Figure 7 、 Figure 11 , the adjustment assembly 400 includes a transmission rod 401, a support base 402, a toothed disc 403, and a columnar body 404 with tooth grooves;

[0081] The transmission rod 401 is arranged parallel to the support frame 102;

[0082] The support base 402 is sleeved on the transmission rod 401 and is integrally mounted on the inner wall of the cabinet 100. The transmission rod 401 is supported and mounted by the support base 402, thereby preventing the support base 402 from being suspended in the air.

[0083] The toothed disc 403 is formed at one end of the transmission rod 401, and a locking member is provided above the toothed disc 403 to limit its own rotation;

[0084] The toothed column 404 is fixed to the other end of the transmission rod 401. An area is formed between the push column 302 and the adjacent vertical plate 500. The toothed column 404 is located in this area and engages with the toothed positions of the push column 302 and the vertical plate 500 respectively. Figure 11 When the vertical plate 500 is rotated in the direction of the arrow in the figure, the vertical plate 500 will rise in the direction of the arrow, and the push column 302 will move in the direction of the arrow toward the outside of the limit frame 301. At this time, the vertical plate 500 is separated from the mounting plate 201, and the push column 302 no longer presses against the insertion rod 203; the side of the vertical plate 500 without the tooth groove is always in contact with the inner side of the limit frame 301, that is, during the entire lifting process of the vertical plate 500, it will be in contact with the inner side of the limit frame 301. Cooperating with the subsequent columnar body 404 with tooth grooves, the vertical plate 500 can be limited to prevent the vertical plate 500 from falling directly.

[0085] In this embodiment, refer to Figure 4 and Figure 5 The locking member includes a horizontal plate 104, a clamping plate 105, a spring 106 and a stud 107;

[0086] The horizontal plate 104 is fixed to the inner wall of the cabinet 100; and the top of the stud 107 is fixed to the bottom surface of the horizontal plate 104;

[0087] The bottom of one end of the card plate 105 is V-shaped and extends downward to be clamped in the tooth groove of the tooth plate 403. The V-shaped area of ​​the card plate 105 is clamped with the tooth groove of the tooth plate 403, and the card plate 105 can be lifted under the rotation of the tooth plate 403. The top of the card plate 105 is movably penetrated by the stud 107. A nut is screwed on the bottom of the stud 107 to connect the card plate 105 with the stud 107 to prevent the card plate 105 from falling. The nut is not shown in the figure. A spring 106 is sleeved on the stud 107, and its two ends are respectively against the cross plate 104 and the card plate 105. When the rod 401 is moved, the toothed disc 403 will push up the top of the card plate 105. At this time, the card plate 105 will move upward along the stud 107 and compress the spring 106. Whenever the card plate 105 passes a tooth groove on the toothed disc 403, it will be rebounded by the rebound spring 106 and re-engaged in the toothed disc 403, thereby ensuring that the toothed disc 403 is limited at any angle. When the toothed disc 403 is in the limited state, the columnar body 404 with the tooth groove will not rotate. Since the other side of the vertical plate 500 is attached to the limit frame 301, the vertical plate 500 can be limited to avoid falling.

[0088] In this embodiment, a threaded hole 103a is further provided at one end of the bottom frame 103 facing the interior of the cabinet 100. After the vertical frame column 200 is limited, the bottom frame 103 is located on the outside of the vertical frame column 200. Since the top of the uppermost vertical frame column 200 and the bottom of the lowermost vertical frame column 200 have no limit structure, the top of the uppermost vertical frame column 200 and the bottom of the lowermost vertical frame column 200 can be counteracted by screwing a bolt into the threaded hole 103a, thereby improving the installation stability. At the same time, using a small number of bolts for limitation also facilitates overall disassembly and assembly.

[0089] In this embodiment, the front surface of the cabinet body 100 is further provided with a cabinet door 101, and the two are connected by a hinge;

[0090] The rear portion of the cabinet 100 is hollowed out, and a back plate is provided in the hollowed out portion. The back plate is not marked. Figure 2 The state of the backplane has been installed, and the reference Figure 3 The back plate is removed and the detachable back plate is provided so that after the relay is installed, wiring can be done at the rear of the cabinet 100 as needed. In actual applications, the back plate and the hollow structure can also be removed.

[0091] The following describes the assembly principle of the low-voltage power distribution cabinet provided by the disclosed embodiment:

[0092] When the distribution cabinet needs to be assembled, first fix the two vertical frame columns 200 with the corresponding number of mounting plates 201, and then install the required relays and other devices on the mounting plates 201. When the assembly is completed, slide the two vertical frame columns 200 from the bottom frame 103, and at the same time, the side frame 202 will slide in the support frame 102 until the square hole 200a is penetrated by the square column 304. Then rotate the transmission rod 401 to drive the toothed column 404 to rotate. Every time it rotates a toothed distance, it will be limited by the descending card plate 105 to ensure that it stops at any angle. Then the toothed column 404 drives the vertical plate 500 and the push column 302 toward When the cam 202 is in the direction of the vertical column 200, the push column 302 pushes the insertion rod 203 and inserts one end of the insertion rod 203 into the inner wall of the other side of the limit frame 301, and one end of the push column 302 enters the square hole 200a to limit the vertical column 200. At the same time, the descending and ascending vertical plate 500 will also pass through the support frame 102 to the slot 202a, thereby achieving the final limit of the vertical column 200. When separating subsequently, the transmission rod 401 is rotated in the opposite direction so that the vertical plate 500 and the push column 302 no longer contact any structure on the vertical column 200. Then, with the help of the elastic force of the spring 204, the insertion rod 203 is retracted to the inside of the vertical column 200.

[0093] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A low-voltage power distribution cabinet, comprising a cabinet body (100), characterized in that: The cabinet (100) is provided with a frame, a limit assembly (300), an adjustment assembly (400) and a vertical plate (500) inside; The frames are provided with two and are symmetrically arranged on the inner walls of both sides of the cabinet (100); each frame is composed of a plurality of vertical frame columns (200) overlapped in an upper and lower manner; The limiting components (300) are fixedly mounted on the inner wall of the cabinet (100) at equal intervals, and limit and fix the overlapping position of every two vertical frame columns (200); Wherein, the limiting component (300) comprises a positioning member and a plug-in member; The alignment piece penetrates the vertical frame column (200) in the direction in which the frame is pushed into the cabinet (100), and the connector penetrates the vertical frame column (200) in the direction perpendicular to the alignment piece after the frame is aligned. The adjusting components (400) are symmetrically arranged on the inner side of the limiting components (300), and each single limiting component (300) corresponds to two adjusting components (400); The vertical plate (500) is arranged at the upper and lower ends of the inner side of each limiting assembly (300) and is fixed to the frame through the vertical plate (500). The inner side surface of the top of the vertical plate (500) is provided with a tooth groove. The vertical plate (500) and the connector are both in transmission connection with the adjustment component (400), and extend or retract under the clockwise / counterclockwise rotation of the adjustment component (400); The alignment member comprises a limiting frame (301), a fixing plate (303), and a square column (304); The limiting frame (301) is in an inverted shape and half-wraps the three sides of the vertical frame column (200); one inner wall of the limiting frame (301) is provided with a through hole (301a) for the plug-in component to pass through, and the other inner wall is provided with a hole for the plug-in component to be inserted after being extended; The fixing plate (303) is integrally formed on the inner side of the limiting frame (301), and the fixing plate (303) is fixed to the inner wall of the cabinet (100); Two square pillars (304) are provided and fixedly arranged on the inner side of the limiting frame (301), and the square pillars (304) are connected through the square hole (200a); The plug-in connector comprises a push column (302) and an insert rod (203); The push columns (302) are provided with two and symmetrically penetrate the inner side surface of the limit frame (301); the square column (304) is located on the inner side of the push column (302); a tooth groove is provided on the end surface of the square column (304) facing away from the fixed plate (303); The insertion rod (203) is located on the inner side of the vertical frame column (200) and is movably inserted through the limiting hole (200c); one end of the insertion rod (203) abuts against the end of the push column (302), and when the push column (302) is extended, the other end simultaneously penetrates the limiting hole (200c) to the outside of the vertical frame column (200) and is inserted into the inside of the limiting frame (301); The adjustment assembly (400) comprises a transmission rod (401), a support seat (402), a toothed disc (403), and a columnar body (404) with tooth grooves; The transmission rod (401) is arranged parallel to the support frame (102); The support seat (402) is sleeved on the transmission rod (401) and is integrally mounted on the inner wall of the cabinet (100); The toothed disc (403) is formed at one end of the transmission rod (401), and a locking member for limiting the rotation of the toothed disc (403) is provided above the toothed disc (403); The columnar body (404) with tooth grooves is fixedly arranged at the other end of the transmission rod (401), and an area is formed between the push column (302) and the adjacent vertical plate (500). The columnar body (404) with tooth grooves is located in this area and is respectively engaged with the tooth groove positions of the push column (302) and the vertical plate (500); the side of the vertical plate (500) without tooth grooves is always in contact with the inner side of the limit frame (301).

2. A low-voltage power distribution cabinet according to claim 1, characterized in that: Support frames (102) staggered with the limiting components (300) are fixedly provided at equal intervals on the inner wall of the cabinet (100), and the end position of each support frame (102) is movably penetrated by the vertical plate (500) at the corresponding position, and a bottom frame (103) is fixedly provided at the upper and lower end surfaces inside the cabinet (100), and the vertical frame columns (200) at the upper and lower ends of the frame are respectively slidably inserted into the bottom frame (103) at the corresponding position.

3. A low-voltage power distribution cabinet according to claim 2, characterized in that: A mounting plate (201) is further provided between the vertical frame columns (200) on both sides of the cabinet body (100); the upper and lower end surfaces of the vertical frame columns (200) are provided with square holes (200a) for the alignment members to pass through, and limiting holes (200c) for the connectors to pass through; through holes (200b) are further provided on the upper and lower end surfaces of the vertical frame columns (200); The limiting hole (200c) is located above the square hole (200a); the through hole (200b) and the square hole (200a) are opened in the same direction, and the center of the limiting hole (200c) and the center of the limiting hole (200c) are located in the same plane; A side frame (202) is fixedly provided on one side of the vertical frame column (200), and the side frame (202) is slidably inserted into the support frame (102); a slot (202a) for the vertical plate (500) to pass through is provided on the side frame (202).

4. A low-voltage power distribution cabinet according to claim 1, characterized in that: An adjustment slot (203a) is provided in the middle of the insertion rod (203), and a limiting rod (205) is also passed through the inside of the adjustment slot (203a). The cross section of the region where the limiting rod (205) and the adjustment slot (203a) pass through is square. The limiting rod (205) is arranged parallel to the square column (304), and both ends of the limiting rod (205) pass through the through hole (200b), and the two are fixedly connected. A hole (205a) with a spiral groove is provided in the middle of the limiting rod (205), and a second spring (204) is screwed into the hole (205a) with the spiral groove, and the two ends of the second spring (204) are against the inner walls of the two sides of the adjustment groove (203a).

5. A low-voltage power distribution cabinet according to claim 4, characterized in that: The locking member includes a transverse plate (104), a clamping plate (105), a spring (106) and a stud (107); The horizontal plate (104) is fixed on the inner wall of the cabinet (100); and the top end of the stud (107) is fixed on the bottom end surface of the horizontal plate (104); The bottom of one end of the clamping plate (105) is V-shaped and extends downward to be inserted into the tooth groove of the toothed disc (403), and the top of the clamping plate (105) is movably penetrated by the stud (107), and a nut is screwed on the bottom of the stud (107). The spring (106) is sleeved on the stud (107), and the two ends are respectively against the cross plate (104) and the clamping plate (105).

6. A low-voltage power distribution cabinet according to claim 2, characterized in that: A threaded hole (103a) is further provided at one end of the bottom frame (103) facing the interior of the cabinet (100). After the vertical frame column (200) is positioned, the bottom frame (103) is located outside the vertical frame column (200).

7. The low-voltage power distribution cabinet according to claim 1, characterized in that: The front surface of the cabinet body (100) is further provided with a cabinet door (101), and the two are connected via a hinge; The rear portion of the cabinet (100) is hollowed out, and a back plate is provided in the hollowed out portion.

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