Draw-out type switch cabinet interlock and switch cabinet

Abstract

The invention discloses a draw-out type switch cabinet interlock and a switch cabinet, and relates to the technical field of electrical equipment. The power distribution cabinet comprises a cabinet body, a plurality of parallel supporting strips are fixed to the two sides of the inner wall of the cabinet body at equal intervals, a limiting plate is fixed to the front portion between the supporting strips with the same height, insulating sleeves are symmetrically fixed to the positions, above the two supporting strips with the same height, of the rear side of the cabinet body in a penetrating mode, and the outer sides of the two insulating sleeves with the same height are jointly and movably connected with a drawer body. A connecting plate is fixed to the front end of each rotating shaft, a fixing shell is fixed to the front side of each connecting plate, a fixing block is fixed to the outer side of a conductive column on the rear portion of the inner wall of each drawer body, a penetrating opening is formed in one side of each fixing block in a penetrating mode, and an insulating locking plate is movably connected to the penetrating openings in the two fixing blocks in the same drawer body. A first connecting rod and a second connecting rod are fixed to the positions, close to the fixing shell, of the bottom of the insulating locking plate. The drawer has the advantages that during operation, double-power-off operation can be achieved during unlocking and drawer body drawing, and work is safer.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical equipment, and in particular relates to a withdrawable switch cabinet interlock and a switch cabinet. Background Art

[0002] Withdrawable switchgear is a common type of electrical equipment, mainly used for the control and protection of power systems. The cabinet body of the withdrawable switchgear is generally made of high-quality cold-rolled steel plates or aluminum-zinc coated steel plates, processed and bent by CNC equipment, and sprayed with plastic on the surface, which has high strength and protection level. The drawer unit is the core part of the withdrawable switchgear, with a reliable mechanical interlocking device to prevent the switch from being pulled with load when the switch is powered on, thereby improving safety. The operating mechanism of the drawer can realize functions such as opening, closing, testing, withdrawing and isolating. The operating handle can be padlocked after positioning. The horizontal busbar is arranged in the horizontal busbar isolation room of the switchgear and can be placed behind or on the top of the cabinet; the distribution busbar (vertical busbar) is assembled in a flame-retardant plastic functional panel and connected to the main busbar through connectors;

[0003] Switchgear interlocking structures are primarily used to prevent misoperation and ensure the safety of equipment and personnel. Commonly found in power equipment such as high-voltage switchgear, they utilize lever rotation to control the movement of a lock bolt. For example, in the interlock between a grounding switch and a circuit breaker, when the grounding switch is closed, a lever mechanism locks the circuit breaker's closing lock bolt, preventing it from closing. Gear rotation controls the movement of the lock bolt. Similarly, in the interlock between a circuit breaker trolley and the cabinet, when the circuit breaker is closed, a gear drives the lock bolt gear, causing the lock bolt to lock onto the trolley chassis rail, preventing the trolley from moving.

[0004] At the same time, after searching existing public documents, the patent document with announcement number CN119518463B discloses a multifunctional withdrawable low-voltage switchgear, which relates to the field of low-voltage switchgear technology. It includes eight mutually coordinated instrument rooms, a digital detection module compartment, a transformer power supply incoming line room, a dual-channel distribution busbar room, a connecting busbar outgoing line room, a module unit room, a feeder cable room, and an emergency standby cable room. The power distribution method adopts phase management and layered current interruption protection, allowing maintenance personnel to quickly identify the fault circuit and fault current characteristics, split the fault circuit, and replace damaged parts, making the maintenance process efficient and convenient, shortening equipment downtime. However, in actual use, it still has the following disadvantages:

[0005] During the operation of the above-mentioned withdrawable switch cabinet, it is necessary to use a locking structure to lock it, and after opening, the corresponding structure is opened. During operation, when the lock is opened, if the power inside the cabinet is not completely cut off, as the work proceeds, it is easy to cause safety hazards. In addition, the power is only cut off by a single switch, and the operator is required to cut off the power additionally, which makes the work safety not good enough. Summary of the Invention

[0006] The purpose of the present invention is to provide a withdrawable switch cabinet interlock and switch cabinet, which solves the problem of insufficient work safety due to the need for additional manual power off during the withdrawable switch cabinet interlock and switch cabinet power off process.

[0007] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] The invention provides a withdrawable switch cabinet interlock and switch cabinet, comprising a cabinet body, wherein a plurality of support bars parallel to each other are fixed at equal intervals on both sides of the inner wall of the cabinet body, and a limit plate is fixed in the front between the support bars of the same height, and an insulating sleeve is symmetrically fixed on the rear side of the cabinet body above the support bars of the same height, and the outer sides of the two insulating sleeves of the same height are movably connected with a drawer body, the drawer body, the rear side of the drawer body is penetrated by a movable opening near a short side, and a rotating shaft is rotatably connected with the position of each movable opening in the cabinet body, and the front end of each rotating shaft is fixed with a connecting plate, a fixing shell, a fixing block and an insulating locking plate are fixed on the front side of the connecting plate, and a fixing block is fixed on the outer side of the conductive column at the rear of the inner wall of each drawer body, and a through-opening is penetrated on one side of the fixing block, and an insulating locking plate is movably connected in the through-openings of the two fixing blocks in the same drawer body, and a connecting shaft is fixed at a position near the fixing shell at the bottom of the insulating locking plate. The drawer body is connected to the rotating shaft through the movable opening, forming a rotatable mechanical linkage structure. The fixed shell is fixed to the rotating shaft through the connecting plate. As the fulcrum of the interlocking mechanism, the insulating locking plate slides in the fixed block through the through-opening to realize mechanical limit. The differentiated length design of the connecting rod one and the connecting rod two forms a timing control. When the drawer is pushed in, the insulating sleeve and the fitting mouth of the fixed block are precisely docked, and the conductive column forms an electrical connection with the connecting rod through the jack. The movement of the insulating locking plate controls the on-off state of the connecting plate. When the drawer is pushed in, the insulating sleeve and the fitting mouth of the fixed block are precisely docked, and the conductive column forms an electrical connection with the connecting rod through the jack. The movement of the insulating locking plate controls the on-off state of the connecting plate. When the drawer is not fully in place, the connecting rod limits the position of the fixed shell to prevent misoperation. The position of the insulating locking plate determines the on-off of the circuit to ensure power-off operation. The limit plate cooperates with the support bar to accurately control the drawer stroke.

[0009] Furthermore, a conductive column is fixed through the insulating sleeve, a socket is provided in the center of the front end of the conductive column, and a socket is provided at the front end of the fixed shell. The fixed shell is arranged between connecting rod 1 and connecting rod 2 at the bottom of the insulating locking plate in the drawer body. The length of connecting rod 1 is less than the length of connecting rod 2. The conductive column arranged in the insulating sleeve serves as a core conductive component, and the socket at its front end is used to establish an electrical connection. The socket at the front end of the fixed shell cooperates with the lock core linkage mechanism to achieve mechanical locking. The fixed shell is precisely positioned between connecting rod 1 and connecting rod 2 to form a linkage fulcrum. The differentiated length design of connecting rod 1 (shorter) and connecting rod 2 (longer) realizes timing control. Connecting rod 1 acts first to trigger the electrical disconnection, and connecting rod 2 acts later to complete the mechanical locking.

[0010] Furthermore, a handle is fixed in the middle of the front side of the drawer body, a viewing mirror is fixed through the inside of the drawer body above the handle, a lock core is fixed through the front side of the drawer body on one side of the viewing mirror, and mounting rails are fixed at equal intervals on the inner wall of the cabinet below the viewing mirror. The height of the mounting rails in the same drawer body is lower than the height of the fixed blocks therein, and the equidistantly arranged mounting rails form a standardized installation reference. The design of the mounting rail height being lower than the fixed blocks ensures that the fixed blocks are not interfered with when the drawers are pushed and pulled, and reserves safe space for electrical connection components to form a layered installation structure for easy maintenance and inspection. When operating, first confirm the status through the viewing mirror, use the handle for pushing and pulling operations, and lock the position through the lock core when necessary. The mounting rails provide stable sliding guides, and the fixed blocks maintain stable electrical connections.

[0011] Furthermore, ventilation holes are evenly opened on both sides of the drawer body, and movable holes are opened at the positions of the insulating sleeves at the same height as the drawer body and the cabinet body, and the insulating sleeve passes through the movable hole. A limit strip is fixed at the edge of the rear side of the drawer body, and the ventilation holes evenly distributed on both sides of the drawer body form a convection channel, which cooperates with the cabinet vents to form a complete heat dissipation duct to ensure effective heat dissipation when the equipment is running. The movable positioning mechanism, the movable hole and the insulating sleeve are precisely matched to realize the precise guiding movement of the drawer body and ensure the alignment accuracy of the electrical connection components. The limit protection device, the limit strip on the rear edge cooperates with the support strip to form a double limit protection mechanism to prevent the drawer from being over-inserted, ensure the accurate positioning of the working position, and avoid damage to the connection parts due to misoperation.

[0012] Furthermore, a fitting opening is provided at the center of the rear side of each of the fixing blocks, and a connecting pole is fixed in the fixing block in front of the fitting opening, and the front end of the connecting pole is flush with the rear side of the through-opening, and the connecting pole extends into the fitting opening, the front end of the insulating sleeve is movably connected in the fitting opening, and the part of the connecting pole extending into the fitting opening is inserted into the socket on the conductive column, the fitting opening on the rear side of the fixing block forms a precise match with the front end of the insulating sleeve, and the guide structure design is adopted to ensure the accuracy of the plug-in process, so as to achieve simultaneous completion of mechanical positioning and electrical connection, the front end of the connecting pole is precisely flush with the rear side of the through-opening, and the extension part of the connecting pole is inserted into the socket of the conductive column to form a low-impedance reliable electrical connection, mechanical connection: physical fixation between components is achieved through the fitting opening, the current path is ensured to be stable through the plug-in structure, and the safety timing of "mechanical positioning first, then electrical conduction" is adopted.

[0013] Furthermore, a second connecting pole is fixed in the fixed block in front of the through-hole, the rear end of the second connecting pole is flush with the front side of the through-hole, and the second connecting pole extends out of the front end of the fixed block, and the central axes of the first connecting pole and the second connecting pole in the same fixed block are on the same straight line, the second connecting pole is coaxially arranged with the connecting pole to form a linear current path, the rear end of the second connecting pole is precisely flush with the front side of the through-hole to ensure contact reliability, the front end of the second connecting pole extends out of the fixed block to provide an external connection interface, the coaxial design minimizes contact resistance, the flush docking ensures large current passing capacity, and the plug-in connection improves operation convenience.

[0014] Furthermore, the insulating locking plate and the two fixed blocks in the drawer body in which they are located are fixed with a terminal plate, and both ends of one terminal plate are in contact with the ends of the first and second terminal poles in a fixed block that are close to each other. The terminal plate is integrated on the insulating locking plate to form a movable conductive bridge. The two ends of the terminal plate adopt an elastic contact design to ensure reliable contact with the terminal pole. A group of terminal plates are independently arranged in each fixed block, and the terminal plates are connected to the first and second terminal poles at the same time. When the insulating locking plate moves, the terminal plates are driven to move synchronously, and the on-off control of the circuit is realized by the contact / separation of the terminal plates. The mechanical position strictly corresponds to the electrical state, and the "first on, then off" switching logic is adopted, with double insulation protection (insulating locking plate + insulating sleeve) and visual on-off status indication.

[0015] Furthermore, a limit plate is fixed on the insulating locking plate near the side of the movable opening, and the limit plate abuts against the side of the fixed block near the movable opening. The limit plate is fixed on the side of the insulating locking plate near the movable opening and is made of high-strength wear-resistant material to ensure long-term reliability. It forms precise planar contact with the side wall of the fixed block, limits the maximum movement stroke of the insulating locking plate, prevents mechanical damage caused by overposition, forms rigid abutment in the working position, and provides an additional mechanical support point.

[0016] Furthermore, each linkage end of the lock core is fixed with a connecting rod, and the middle part of the peripheral side of the connecting rod is movably connected with a support frame, and the bottom end of the support frame is fixed to the inner bottom of the drawer body where the connecting rod is located, and the rear end of the connecting rod is fixed with a fixed disk, and the rear end of the fixed disk is fixed with an insert plate, and the insert plate is inserted into the socket at the front end of the fixed shell in the drawer body. The lock core serves as the operation input end, and torque is generated by rotating the key. The connecting rod converts the rotational motion into linear motion. The support frame provides a stable motion guide to prevent the connecting rod from swinging, and the fixed disk amplifies the operating torque. The insert plate is precisely matched with the socket of the fixed shell, and a bevel guide design is adopted to facilitate smooth insertion of the insert plate. The insert plate is fully inserted into the socket and mechanically locked in place.

[0017] Furthermore, air vents are provided on both sides of the cabinet body and at corresponding positions to the drawer body, and reinforcing rods are evenly and vertically fixed in the air vents. The limit strips are arranged between two support strips at the height of the inner tube of the cabinet, and the drawer body supports are arranged on two support strips at the height of the inner tube of the cabinet. Through-type air vents are provided at corresponding positions of the cabinet body and the drawer body, and reinforcing rods are arranged in an array in the air vents to form a grid-like protective structure, which realizes two-way convection of airflow while ensuring structural strength.

[0018] The present invention has the following beneficial effects:

[0019] The present invention solves the problem of manual power-off required during the interlocking and power-off process of the withdrawable switch cabinet and the insufficient work safety by arranging a cabinet body, a drawer body, a fixed block, an insulating locking plate and a lock core. When the drawer body is pushed back to its original position, the plug plate moves to the socket on the fixed shell, and the two connecting rods 1 and 2 are reset. After the structure in the lock core is rotated again by the key, the structure in the lock core is linked to the connecting rod, which drives the fixed disk and the plug plate to rotate in the fixed shell, pushing the connecting rod 2 with a longer length at the bottom of the insulating locking plate. When the connecting plate rotates to lock the drawer body and the cabinet, the limit plate on the insulating locking plate is pushed to fit a fixed block. At this time, the power connection plate moves to contact the power connection rod 1 and the power connection rod 2, and the power connection operation of the equipment in the drawer body of the operation is restored. When the drawer body is pushed to reset, the fitting mouth on the fixed block moves until the insulating sleeve enters the power connection rod 1 on the fixed block. During the movement, the power connection rod 1 is inserted into the socket on the conductive column. After the power connection rod 1 is inserted into the socket on the conductive column and is in place, the power connection of the power connection rod 1 is restored. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A three-dimensional diagram of the interlocking and assembly structure of a withdrawable switch cabinet;

[0022] Figure 2 It is a three-dimensional diagram of the cabinet structure;

[0023] Figure 3 It is a structural stereogram of the insulating sleeve;

[0024] Figure 4 It is a structural stereogram of the fixed shell;

[0025] Figure 5 It is a structural stereogram of the drawer body;

[0026] Figure 6 It is a three-dimensional diagram of the structure after the fixed block is partially cut away;

[0027] Figure 7 It is a structural perspective diagram of the insulating locking plate;

[0028] Figure 8 It is a structural stereogram of the lock cylinder;

[0029] Figure 9 This is a three-dimensional structural diagram of the drawer body when viewed from above.

[0030] Reference numerals:

[0031] 1. Cabinet; 101. Insulation sleeve; 1011. Conductive column; 1012. Jack; 102. Fixing shell; 1021. Socket; 1022. Connecting plate; 1023. Rotating shaft; 103. Ventilation port; 104. Reinforcement rod; 105. Support bar; 106. Limit plate; 2. Drawer body; 201. Mirror; 202. Handle; 203. Mounting rail; 204. Movable hole; 205. Movable opening; 206, vent; 207, limit strip; 3, fixed block; 301, fitting opening; 302, through opening; 303, connecting pole one; 304, connecting pole two; 4, insulating locking plate; 401, connecting plate; 402, limit plate; 403, connecting rod one; 404, connecting rod two; 5, lock core; 501, connecting rod; 502, support frame; 503, fixing plate; 504, plug-in plate. DETAILED DESCRIPTION

[0032] 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 any creative efforts shall fall within the scope of protection of the present invention. Specific embodiment 1

[0034] See also Figure 1-5 9. The present invention is a withdrawable switch cabinet interlock and switch cabinet, including a cabinet body 1 structure on both sides of the inner wall fixed with a plurality of groups of mutually parallel support bars 105 at equal intervals, the front of the support bars 105 at the same horizontal height are horizontally connected by a limit plate 106, and on the rear side of the cabinet body 1 at the corresponding position of each group of support bars 105, a through-fixed insulating sleeve 101 component is symmetrically installed, which has a built-in conductive column 1011, a socket 1012 processed at the front center, and a fixed shell 102 with a socket 1021 at the front end. The drawer body 2 is movably connected to the insulating sleeve 101 through a movable hole 204, and an insulating locking plate 4 is provided inside. The bottom of the insulating locking plate 4 The cabinet body 1 and the drawer body 2 are provided with air vents 103 at corresponding positions, and an array of reinforcing rods 104 are arranged inside. The drawer body 2 has air vents 206 evenly distributed on the side walls, and a limit strip 207 is arranged between the support strips 105 in the cabinet body 1. The drawer body 2 is supported by the support strips 105. A handle 202 is installed in the middle of the front side of the drawer body 2, and a mirror 201 and a lock core 5 are arranged on the upper part. The inner wall is provided with multiple mounting rails 203 of the same height, and the installation height is lower than the arrangement position of the fixed block 3.

[0035] The drawer 2 is then pulled out of the cabinet 1 and the electrical equipment is then removed from the cabinet 1. The drawer 2 is then released from the cabinet 1 and the electrical equipment is then removed from the cabinet 1. The drawer 2 is then released and the electrical equipment is removed from the cabinet 1.

[0036] Furthermore, when the electrical equipment in the drawer main body 2 is in operation, the heat dissipation device installed in the drawer main body 2 is started, so that during operation, air is drawn in from the gap between the reinforcing rods 104 in the vent 103 on one side of the cabinet 1, and then enters from the vent holes 206 on one side of the drawer main body 2. After dissipating the heat through the electrical equipment in the drawer main body 2, it is discharged from the vent holes 206 on the drawer main body 2 on the other side to the vent 103 on the cabinet 1, and is discharged after passing through the reinforcing rods 104 between the vents 103, thereby completing the heat dissipation of the electrical equipment in the drawer main body 2. Specific embodiment 2

[0038] See also Figure 1-8 Based on the first embodiment, the present invention further includes a fixing block 3 and an insulating locking plate 4 that fits tightly therewith. A fitting opening 301 is formed in the center of the rear side of each fixing block 3. A first connecting rod 303 is firmly fixed inside the fixing block 3 in front of the fitting opening 301. The front end of the first connecting rod 303 is flush with the rear side of the through opening 302, and a portion of the first connecting rod 303 extends deep into the fitting opening 301.

[0039] The front end of the insulating sleeve 101 can be flexibly connected to the fitting opening 301. At the same time, the portion of the connecting rod extending into the fitting opening 301 is accurately plugged into the pre-opened socket 1012 on the conductive column 1011. This tight connection ensures the stability and reliability of electrical conduction.

[0040] A fixing block 3 is securely fixed to the outer side of the conductive post 1011 at the rear inner wall of each drawer body 2. A through-hole 302 is formed through one side of the fixing block 3. This through-hole 302 does not exist in isolation, but rather works in conjunction with other components. Within the same drawer body 2, the through-holes 302 in the two fixing blocks 3 together provide a space for the insulating locking plate 4 to be flexibly connected, allowing the insulating locking plate 4 to move flexibly therein.

[0041] The insulating locking plate 4 also has a sophisticated design. A first connecting rod 403 and a second connecting rod 404 are fixed to its bottom near the fixed housing 102. The first connecting rod 403 is intentionally positioned away from the fixed block 3, while the second connecting rod 404 is positioned closer to the fixed block 3. This differentiated layout helps the insulating locking plate 4 achieve precise positioning and stable operation in the device.

[0042] The front side mirror 201 and one side of the handle 202 of each drawer body 2 are all penetrated by the fixed lock core 5, and the rear side of the drawer body 2 is provided with a movable opening 205 near a short side. This movable opening 205 is closely related to the components inside the cabinet 1. At the rear side of the cabinet 1, at the position precisely corresponding to each movable opening 205, a rotating shaft 1023 is rotatably connected. The front end of each rotating shaft 1023 is firmly fixed with a connecting plate 1022, which further strengthens the connection relationship between the rotating shaft 1023 and other components. On the front side of the connecting plate 1022, a fixed shell 102 is fixed. These components are connected layer by layer to form an organic whole.

[0043] The linkage end of each lock cylinder 5 is fixed with a connecting rod 501, and the middle part of the peripheral side of the connecting rod 501 is movably connected to the support frame 502. The bottom end of the support frame 502 is firmly fixed to the inner bottom of the drawer body 2 where the connecting rod 501 is located, providing stable support for the connecting rod 501 to ensure its accuracy during movement. The rear end of the connecting rod 501 is fixed with a fixed disk 503, and the rear end of the fixed disk 503 is further fixed with an inserting plate 504, which is accurately inserted into the socket 1021 specially opened at the front end of the fixed shell 102 in the drawer body 2. Through this plug-in method, the effective linkage between the lock cylinder 5 and the fixed shell 102 is achieved, thereby controlling the relevant operations of the drawer body 2;

[0044] The insulating locking plate 4 and the two fixed blocks 3 in the drawer body 2 are correspondingly connected to the positions of the connecting rods 303 in the drawer body 2, and the two ends of the connecting rod 401 can simultaneously make close contact with the ends of the connecting rods 303 and 304 in the fixed block 3.

[0045] A limit piece 402 is fixed on the insulating locking plate 4 near the movable opening 205. The limit piece 402 is used to limit the movement range of the insulating locking plate 4. It is in close contact with the side of the fixed block 3 near the movable opening 205, thereby ensuring that the insulating locking plate 4 moves within the specified range.

[0046] Specifically, when the switch cabinet needs to be opened, first insert the matching key corresponding to the lock cylinder 5, then turn the key, the linkage end of the lock cylinder 5 rotates, driving the connecting rod 501 to rotate, the connecting rod 501 is in the drawer body 2, and is supported by the support frame 502 fixed in the drawer body 2. When the connecting rod 501 rotates, it drives the fixed plate 503 and the plug plate 504 to rotate, and the plug plate 504 rotates, driving the fixed shell 102, the connecting plate 1022 and the rotating shaft 1023 to rotate, so that the long side of the end face of the fixed shell 102 rotates to the state that the long side edge of the movable opening 205 on the drawer body 2 is flush with the long side edge of the movable opening 205 on the drawer body 2. In this process, The rotating fixed shell 102 will push the connecting rod 1 403 to drive the insulating locking plate 4 to move away from the fixed block 3, so that the power connection piece 401 on the insulating locking plate 4 leaves the end surfaces of the power connection rod 1 303 and the power connection rod 2 304 that are close to each other, thereby cutting off the power to the equipment in the cabinet 1. At the same time, the locking effect of the cabinet 1 and the drawer body 2 is released, so that the power-off operation of the drawer can be completed before the drawer body 2 is pulled out, wherein the part of the power connection rod 2 304 extending out of the fixed block 3 is connected to the powered equipment in the electrical circuit in the drawer body 2, and the electrical equipment in the drawer body 2 is powered on.

[0047] Furthermore, when the drawer body 2 is pushed back to its original position, the plug plate 504 moves to be inserted into the socket 1021 on the fixed shell 102, and the two connecting rods 1 403 and 2 404 are reset. After the structure in the lock cylinder 5 is rotated again by the key, the structure in the lock cylinder 5 is linked to the connecting rod 501, driving the fixed plate 503 and the plug plate 504 to rotate in the fixed shell 102, pushing the longer connecting rod 2 404 at the bottom of the insulating locking plate 4. When the connecting plate 1022 rotates to lock the drawer body 2 and the cabinet 1, the limit plate 402 on the insulating locking plate 4 is pushed to fit a fixed block 3. At this time, after the power connection plate 401 moves to contact with the power connection rod 1 303 and the power connection rod 2 304, the power connection operation of the equipment in the drawer body 2 of the operation is restored. Specific embodiment three

[0049] See also Figure 1-6On the basis of the first and second embodiments, a highly conductive conductive column 1011 is provided inside the insulating sleeve 101. A socket 1012 is precisely machined at the center of the front end of the conductive column 1011 for reliable electrical connection. A matching socket 1021 is provided at the front end of the corresponding fixed shell 102. Its installation position has been precisely calculated and is located between the connecting rod 1 403 and the connecting rod 2 404 at the bottom of the insulating locking plate 4 in the drawer body 2. The connecting rod 1 403 is designed to be shorter, while the connecting rod 2 404 is longer. This differentiated length design ensures the timing of the mechanical interlocking. In terms of the structural design of the fixed block 3, a standardized fitting opening 301 is machined in the center of its rear side. The front of the fitting opening 301 has a built-in power connection rod 1 303. Its front end is precisely flush with the rear side of the through-opening 302. At the same time, the power connection rod 1 303 extends into the interior of the fitting opening 301. The entire electrical connection system is mechanically positioned by the movable connection between the front end of the insulating sleeve 101 and the fitting opening 301, while the connecting rod 303 is inserted into the socket 1012 of the conductive column 1011 to complete electrical conduction. This dual connection method ensures mechanical stability.

[0050] Specifically, during operation, after the initial power outage between the conductive column 1011 and the electrical equipment in the drawer body 2 is completed through the insulating locking plate 4, when the handle 202 on the drawer body 2 is pulled, the drawer body 2 is pulled in the cabinet 1. At the same time, the fitting 301 in the fixed block 3 is separated from the insulating sleeve 101, and the power connecting rod 303 in the fixed block 3 is pulled out from the socket 1012 on the conductive column 1011, further disconnecting the power.

[0051] Furthermore, when the drawer body 2 is pushed to reset, the fitting opening 301 on the fixed block 3 moves to the insulating sleeve 101 and enters the power connecting rod 303 on the fixed block 3. During the movement, the power connecting rod 303 is inserted into the socket 1012 on the conductive column 1011. After the power connecting rod 303 is inserted into the socket 1012 on the conductive column 1011 and is in place, the power connection of the power connecting rod 303 is restored.

[0052] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0053] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A withdrawable switch cabinet interlock, comprising A cabinet (1), wherein a plurality of mutually parallel support bars (105) are fixed at equal intervals on both sides of the inner wall of the cabinet (1), and a limiting plate (106) is fixed at the front between the support bars (105) at the same height; An insulating sleeve (101) is symmetrically fixed through the rear side of the cabinet body (1) above the two support bars (105) at the same height, and the outer sides of the two insulating sleeves (101) at the same height are movably connected to the drawer body (2); A drawer body (2), wherein a movable opening (205) is formed through the rear side of the drawer body (2) near a short side, and a rotating shaft (1023) is rotatably connected to the position of each movable opening (205) in the cabinet (1), and a connecting plate (1022) is fixed to the front end of each rotating shaft (1023), and a fixed shell (102) is fixed to the front side of the connecting plate (1022); A fixed block (3) and an insulating locking plate (4) are provided. A fixed block (3) is fixed to the outer side of a conductive column (1011) at the rear inner wall of each drawer body (2). A through-hole (302) is provided on one side of the fixed block (3). The through-holes (302) in the two fixed blocks (3) in the same drawer body (2) are movably connected to an insulating locking plate (4). A connecting rod 1 (403) and a connecting rod 2 (404) are fixed to the bottom of the insulating locking plate (4) near the fixed shell (102). The connecting rod 1 (403) is arranged away from the fixed block (3), and the connecting rod 2 (404) is arranged close to the fixed block (3).

2. The withdrawable switch cabinet interlock according to claim 1, characterized in that: A conductive column (1011) is fixed through the insulating sleeve (101), a socket (1012) is provided at the center of the front end of the conductive column (1011), a socket (1021) is provided at the front end of the fixed shell (102), and the fixed shell (102) is arranged between a first connecting rod (403) and a second connecting rod (404) at the bottom of the insulating locking plate (4) in the drawer body (2), and the length of the first connecting rod (403) is less than the length of the second connecting rod (404).

3. The withdrawable switch cabinet interlock according to claim 2, characterized in that: A handle (202) is fixed in the middle of the front side of the drawer body (2); a viewing mirror (201) is fixed through the drawer body (2) above the handle (202); a lock core (5) is fixed through the front side of the drawer body (2) on one side of the viewing mirror (201); mounting rails (203) are fixed at equal intervals on the inner wall of the cabinet (1) below the viewing mirror (201); and the height of the mounting rails (203) in the same drawer body (2) is lower than the height of the fixed block (3) therein.

4. The withdrawable switch cabinet interlock according to claim 1, characterized in that: Both sides of the drawer body (2) are evenly penetrated with ventilation holes (206), and the drawer body (2) and the insulating sleeve (101) in the cabinet (1) are provided with a movable hole (204) at the same height as the position, and the insulating sleeve (101) passes through the movable hole (204), and a limit strip (207) is fixed at the edge of the rear side of the drawer body (2).

5. The withdrawable switch cabinet interlock according to claim 1, characterized in that: A fitting opening (301) is provided at the center of the rear side of each fixing block (3), and a connecting rod (303) is fixed in the fixing block (3) in front of the fitting opening (301). The front end of the connecting rod (303) is flush with the rear side of the through opening (302), and the connecting rod (303) extends into the fitting opening (301). The front end of the insulating sleeve (101) is movably connected in the fitting opening (301), and the portion of the connecting rod (303) extending into the fitting opening (301) is plugged into the socket (1012) on the conductive column (1011).

6. The withdrawable switch cabinet interlock according to claim 5, characterized in that: A second connecting rod (304) is fixed in the fixing block (3) in front of the through-hole (302), the rear end of the second connecting rod (304) is flush with the front side of the through-hole (302), and the second connecting rod (304) extends out of the front end of the fixing block (3), and the central axes of the first connecting rod (303) and the second connecting rod (304) in the same fixing block (3) are on the same straight line.

7. The withdrawable switch cabinet interlock according to claim 6, characterized in that: The insulating locking plate (4) is fixed with a power connection piece (401) corresponding to the position of the first power connection piece (303) in the two fixed blocks (3) in the drawer body (2) where it is located, and both ends of the power connection piece (401) are in contact with the ends of the first power connection piece (303) and the second power connection piece (304) in the fixed block (3) that are close to each other.

8. The withdrawable switch cabinet interlock according to claim 1, characterized in that: A limiting piece (402) is fixed on the insulating locking plate (4) near the movable opening (205), and the limiting piece (402) abuts against one side of the fixed block (3) near the movable opening (205).

9. The withdrawable switch cabinet interlock according to claim 3, characterized in that: A connecting rod (501) is fixed to the linkage end of each lock core (5); a support frame (502) is movably connected to the middle portion of the peripheral side of the connecting rod (501); the bottom end of the support frame (502) is fixed to the inner bottom of the drawer body (2) where the connecting rod (501) is located; a fixed disk (503) is fixed to the rear end of the connecting rod (501); a plug-in plate (504) is fixed to the rear end of the fixed disk (503); and the plug-in plate (504) is plugged into a socket (1021) at the front end of the fixed shell (102) in the drawer body (2).

10. A switch cabinet comprising the withdrawable switch cabinet interlock according to any one of claims 1 to 9, characterized in that: Both sides of the cabinet (1) and the drawer body (2) are provided with ventilation holes (103) corresponding to each other in position, and reinforcement rods (104) are evenly and vertically fixed in the ventilation holes (103). The limiting strip (207) is arranged between two support strips (105) at the same height as the inner tube of the cabinet (1), and the drawer body (2) is supported on the two support strips (105) at the same height as the inner tube of the cabinet (1).

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