A safety interlocking device for grounding switch used in central cabinet

Abstract

The present invention discloses a safety interlock device for a grounding switch used in a central cabinet. The first housing is arranged on the side of the cabinet door away from the cabinet body, the linkage mechanism and the identification mechanism are both arranged in the first housing, the first housing is provided with an insertion slot, the identification mechanism is connected to the insertion slot, and the electronic key is used to enter the insertion slot to connect the identification mechanism, so that the electronic key sends a characteristic code to the identification mechanism; the door lock mechanism is arranged on the other side of the cabinet door away from the linkage mechanism, the linkage mechanism is connected to the door lock mechanism, and the linkage mechanism is used to control the opening or closing of the grounding switch in the cabinet; the controller is electrically connected to the linkage mechanism, the door lock mechanism and the identification mechanism respectively, and the identification mechanism is used to send a passing information to the controller after the characteristic code passes. The present invention proposes a technical solution in which the staff can only open the cabinet door by the electronic key, and realizes the interlocking of the grounding switch and the cabinet door, thereby improving the anti-theft performance and preventing unauthorized personnel from opening the cabinet door.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, and in particular to a grounding switch safety interlocking device for a central cabinet. Background Art

[0002] The center cabinet is a kind of power distribution equipment with a trolley-type circuit breaker. Its full name is metal armored center removable switchgear. It belongs to high-voltage power distribution equipment. The center switch cabinet is mainly used in power plants, power transmission of small and medium-sized generators, power receiving and transmission of secondary substations of power systems, power distribution of industrial and mining enterprises and institutions, and starting of large high-voltage motors. In order to ensure the safety of the center cabinet, the opening and closing of the grounding switch in the cabinet and the opening and closing of the cabinet door must form an interlocking relationship. Before the grounding switch is closed, the back door of the cabinet cannot be opened; and after the cabinet door is opened and before it is closed, the grounding switch cannot be opened. Now, an operating port is generally opened in the cabinet door. The staff directly enters the operating port through a key similar to a connecting cylinder, so that the end of the connecting cylinder extending into the operating port is connected to the control end of the grounding switch, and the closing and opening of the grounding switch are controlled by turning the connecting cylinder. However, such operation has certain risks. Because it is a purely mechanical structure, it is impossible to identify the person who opens it. External personnel can also enter the operating port through some pipes to control the grounding switch. There is almost no anti-theft function, which cannot be refused. Summary of the invention

[0003] The main purpose of the present invention is to provide a grounding switch safety interlock device for a central cabinet, aiming to solve the problem that the cabinet door and the grounding switch in the existing central cabinet have poor anti-theft functions.

[0004] To achieve the above purpose, the technical solution proposed by the present invention is:

[0005] A safety interlock device for a grounding switch for a central cabinet comprises a cabinet body, a cabinet door, a controller, a door lock mechanism, a linkage mechanism, a first shell, an identification mechanism and an electronic key, wherein the first shell is arranged on a side of the cabinet door away from the cabinet body, the linkage mechanism and the identification mechanism are both arranged in the first shell, the first shell is provided with an insertion slot, the identification mechanism is connected to the insertion slot, the electronic key is used to enter the insertion slot and connect to the identification mechanism, so that the electronic key sends a feature code to the identification mechanism; the door lock mechanism is arranged on the other side of the cabinet door away from the linkage mechanism, the linkage mechanism is connected to the door lock mechanism, and the linkage mechanism is used to control the opening or closing of the grounding switch in the cabinet; the controller is electrically connected to the linkage mechanism, the door lock mechanism and the identification mechanism respectively, the identification mechanism is used to send a passing information to the controller after the passing of the feature code; the controller is used to control the linkage mechanism and the door lock mechanism respectively according to the passing information, so that the cabinet door is opened after the grounding switch is closed, or the grounding switch is opened after the cabinet door is closed.

[0006] Preferably, the linkage mechanism comprises a driver and a connecting cylinder, wherein the driver is arranged in the first housing; the connecting cylinder passes through the cabinet door, and one end of the connecting cylinder away from the cabinet body extends into the first housing, the connecting cylinder is perpendicular to the cabinet door, and the connecting cylinder and the cabinet door are rotatably connected through a bearing; a through groove is provided on the inner wall surface of the connecting cylinder, and the through groove extends along the axial direction of the connecting cylinder, a coaxial inner cylinder is provided in the connecting cylinder, and a slider is provided on the outer wall surface of the inner cylinder, and the slider enters the through groove; the driver drives and connects the connecting cylinder and the inner cylinder respectively, and the driver is used to drive the connecting cylinder to rotate respectively, and drive the inner cylinder to move along the axial direction of the connecting cylinder; a clamping groove is provided at one end of the inner cylinder away from the telescopic device, and the clamping groove is used to accommodate the control end of the grounding switch, so that the inner cylinder drives the control end of the grounding switch to rotate and control the opening and closing of the grounding switch; the controller is electrically connected to the driver, and the controller is used to control the driver to first drive the inner cylinder to clamp the control end of the grounding switch, and then drive the connecting cylinder to drive the control end of the grounding switch to rotate forward and reverse through the inner cylinder, so that the grounding switch is opened or closed.

[0007] Preferably, the driver includes a motor, a driving gear and a driven gear, the driven gear is sleeved on the outer edge of the connecting cylinder, the driving gear is sleeved on the output end of the motor, and the driving gear and the driven gear are meshed; the controller is electrically connected to the motor, and the controller is used to control the motor to drive the driving gear to drive the driven gear to rotate after the inner cylinder is clamped with the grounding switch, so that the connecting cylinder drives the control end of the grounding switch through the inner cylinder to rotate forward and reverse.

[0008] Preferably, the driver also includes a telescope and a connecting rod, one end of the connecting rod is connected to the output end of the telescope, and the other end of the connecting rod is rotatably connected to an end of the inner cylinder away from the cabinet, and the telescope is used to drive the inner cylinder to slide back and forth along the axial direction of the connecting cylinder through the connecting rod; the controller is electrically connected to the telescope, and the controller is used to control the telescope to drive the inner cylinder to move according to the passing information, so that the end of the inner cylinder where the slot is opened is close to or away from the control end of the grounding switch.

[0009] Preferably, the door lock mechanism includes an electric lock, which is used to open and close the cabinet door; the controller is electrically connected to the cabinet door, and the controller is used to control the linkage mechanism to open the grounding switch after the electric lock locks the cabinet door, or to control the electric lock to open the cabinet door after the linkage mechanism closes the grounding switch.

[0010] Preferably, the door lock mechanism also includes a connecting plate, a mounting seat and a trigger button, the connecting plate and the mounting seat are both arranged on the side of the cabinet door facing away from the first shell; the mounting seat is arranged on one side of the connecting tube, and the trigger button is arranged on the mounting seat; one end of the connecting plate is connected to the outer edge of the connecting tube, the connecting plate is perpendicular to the axial direction of the connecting tube, and the connecting plate is used to press the trigger button as the connecting tube rotates; the controller is electrically connected to the trigger button, and the trigger button is used to send signal data to the controller respectively, and the controller is used to control the linkage mechanism to open the grounding switch after receiving the signal data and the electric lock locks the cabinet door; the controller is also used to control the electric lock to open the cabinet door if the signal data is not received and after the linkage mechanism closes the grounding switch.

[0011] Preferably, the electronic key includes a second shell and a display screen, the display screen is located at one end of the second shell, and the display screen is used to display the feature code; the identification window of the identification mechanism is arranged at the bottom of the insertion slot, and the electronic key is used to enter the insertion slot so that the identification window of the identification mechanism is arranged opposite to the display screen.

[0012] Preferably, a limiting hole is provided on the top side of the second shell; the insertion slot is located on the side of the first shell away from the cabinet door, a mounting hole is provided on the top side of the insertion slot, a lifter is provided in the mounting hole, an output end of the lifter is provided close to the insertion slot, and the controller is used to control the lifting and lowering of the lifter according to the passing information so that the output end of the lifter enters the limiting hole.

[0013] Preferably, a control button is provided at one end of the second shell away from the display screen, the control button is electrically connected to the display screen, and the control button is used to control the display screen to display a feature code.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] The linkage mechanism and the identification mechanism are accommodated on the outside of the cabinet door by the first shell, and the door lock mechanism is arranged on the inside of the cabinet door. The staff can only open the cabinet door by the electronic key, and the interlocking of the ground switch and the cabinet door is realized, which improves the anti-theft performance and prevents unauthorized persons from opening the cabinet door. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 the structures shown in these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a safety interlock device for a grounding switch for a central cabinet of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure inside the left side of the first shell;

[0019] Figure 3 It is a schematic diagram of the structure inside the right side of the first shell;

[0020] Figure 4 This is a schematic diagram of the structure on the other side of the cabinet door;

[0021] Figure 5 for Figure 1 Schematic diagram of the structure after enlarging point A in the middle.

[0022] Description of Figure Numbers:

[0023] 1-cabinet body; 11-cabinet door; 12-first housing; 13-identification mechanism; 14-insertion slot; 15-mounting hole; 16-lifter;

[0024] 2-door lock mechanism; 21-electric lock; 22-connecting plate; 23-mounting seat; 24-trigger button;

[0025] 3- linkage mechanism; 31- connecting tube; 32- through slot; 33- motor; 34- driving gear; 35- driven gear; 36- telescopic device; 37- connecting rod; 38- fixing plate;

[0026] 4-electronic key; 41-second housing; 42-display screen; 43-limiting hole; 44-control button;

[0027] 5-inner cylinder; 51-cylinder body; 52-cylinder cover; 53-slider; 54-slot;

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] The invention provides a grounding switch safety interlocking device for a central cabinet.

[0035] like Figures 1 to 4The illustrated embodiment of the invention is a safety interlock device for a grounding switch for a central cabinet, comprising a cabinet body 1, a cabinet door 11, a controller, a door lock mechanism 2, a linkage mechanism 3, a first shell 12, an identification mechanism 13 and an electronic key 4. The first shell 12 is arranged on a side of the cabinet door 11 away from the cabinet body 1. The linkage mechanism 3 and the identification mechanism 13 are both arranged in the first shell 12. The first shell 12 is provided with an insertion slot 14. The identification mechanism 13 is connected to the insertion slot 14. The electronic key 4 is used to enter the insertion slot 14 to connect with the identification mechanism 13, so that the electronic key 4 is moved toward the identification mechanism 1 3 sends a characteristic code; the door lock mechanism 2 is arranged on the other side of the cabinet door 11 away from the linkage mechanism 3, the linkage mechanism 3 is connected to the door lock mechanism 2, and the linkage mechanism 3 is used to control the grounding switch in the cabinet 1 to open or close; the controller is electrically connected to the linkage mechanism 3, the door lock mechanism 2 and the identification mechanism 13 respectively, and the identification mechanism 13 is used to identify the passing of the characteristic code and send the passing information to the controller; the controller is used to control the linkage mechanism 3 and the door lock mechanism 2 respectively according to the passing information, so that the cabinet door 11 is opened after the grounding switch is closed, or the grounding switch is opened after the cabinet door 11 is closed.

[0036] The linkage mechanism 3 and the identification mechanism 13 are accommodated on the outside of the cabinet door 11 by the first shell 12, and the door lock mechanism 2 is arranged on the inside of the cabinet door 11. The staff can only open the cabinet door 11 by the electronic key 4, and the interlocking of the ground switch and the cabinet door 11 is realized, thereby improving the anti-theft performance and preventing unauthorized personnel from opening the cabinet door 11.

[0037] Specifically, the feature code may be a QR code, a bar code or other codes.

[0038] The linkage mechanism 3 includes a driver and a connecting tube 31. The driver is arranged in the first shell 12. The connecting tube 31 passes through the cabinet door 11. The end of the connecting tube 31 away from the cabinet body 1 extends into the first shell 12. The connecting tube 31 is perpendicular to the cabinet door 11. The connecting tube 31 and the cabinet door 11 are rotatably connected through a bearing. A through groove 32 is provided on the inner wall surface of the connecting tube 31. The through groove 32 extends along the axial direction of the connecting tube 31. A coaxial inner tube 5 is provided in the connecting tube 31. A slider 53 is provided on the outer wall surface of the inner tube 5. The slider 53 enters the through groove 32. The driver drives the connecting tubes 31 to move. 31 and inner tube 5, the driver is used to drive the connection tube 31 to rotate and drive the inner tube 5 to move along the axial direction of the connection tube 31; a slot 54 is set at the end of the inner tube 5 away from the telescopic device 36, and the slot 54 is used to accommodate the control end of the grounding switch, so that the inner tube 5 drives the control end of the grounding switch to rotate and control the opening and closing of the grounding switch; the controller is electrically connected to the driver, and the controller is used to control the driver to first drive the inner tube 5 to clamp the control end of the grounding switch, and then drive the connection tube 31 to drive the control end of the grounding switch through the inner tube 5 to rotate forward and reverse, so that the grounding switch is opened or closed. The through slot 32 and the slider 53 are set to limit the inner tube 5 from sliding along the through slot 32, and to drive the inner tube 5 when the connection tube 31 rotates.

[0039] Specifically, a flexible layer is provided on the inner wall surface of the connecting tube 31 , so as to ensure that the connecting tube 31 and the inner tube 5 are tightly connected and the inner tube 5 is stable during movement.

[0040] Specifically, the shape of the slot 54 is designed according to the shape of the output end of the grounding switch, such as a rectangle, a cross, a triangle, etc.

[0041] The driver includes a motor 33, a driving gear 34 and a driven gear 35. The driven gear 35 is sleeved on the outer edge of the connecting tube 31. The driving gear 34 is sleeved on the output end of the motor 33. The driving gear 34 and the driven gear 35 are meshed. The controller is electrically connected to the motor 33. The controller is used to control the motor 33 to drive the driving gear 34 to drive the driven gear 35 to rotate after the inner tube 5 is clamped with the grounding switch, so that the connecting tube 31 drives the control end of the grounding switch through the inner tube 5 to rotate forward and reverse.

[0042] Specifically, the motor 33 is a servo motor 33 .

[0043] The driver also includes a telescope 36 and a connecting rod 37, one end of the connecting rod 37 is connected to the output end of the telescope 36, and the other end of the connecting rod 37 is rotatably connected to the end of the inner tube 5 away from the cabinet 1. The telescope 36 is used to drive the inner tube 5 to slide back and forth along the axial direction of the connecting tube 31 through the connecting rod 37; the controller is electrically connected to the telescope 36, and the controller is used to control the telescope 36 to drive the inner tube 5 to move according to the information passed, so that the end of the inner tube 5 with the slot 54 is close to or away from the control end of the grounding switch.

[0044] Specifically, the connecting rod 37 is fixedly connected to the output end of the telescopic device 36, the inner cylinder 5 includes a cylinder body 51 and a cylinder cover 52, and two fixing plates 38 are arranged at one end of the connecting rod 37 away from the telescopic device 36, and the two fixing plates 38 are arranged in parallel and spaced apart, one of which is located in the cylinder body 51, and the other is located at the side of the cylinder body 51 away from the cylinder cover 52, and the two fixing plates 38 are used to clamp the bottom end of the cylinder body 51; the connecting fixing plate 38 located in the cylinder body 51 is threadedly connected to the connecting rod 37; and the cylinder cover 52 is provided with a card slot 54. Such a structure is simple and convenient for disassembly and replacement, and ensures the operation of the entire structure.

[0045] The door lock mechanism 2 includes an electric lock 21, which is used to open and close the cabinet door 11; the controller is electrically connected to the cabinet door 11, and the controller is used to control the linkage mechanism 3 to open the grounding switch after the electric lock 21 locks the cabinet door 11, or control the electric lock 21 to open the cabinet door 11 after the linkage mechanism 3 closes the grounding switch. The electric lock 21 and the linkage mechanism 3 are linked to ensure the linkage of the cabinet door 11 and the grounding switch.

[0046] The door lock mechanism 2 also includes a connecting plate 22, a mounting seat 23 and a trigger button 24. The connecting plate 22 and the mounting seat 23 are both arranged on the side of the cabinet door 11 away from the first shell 12; the mounting seat 23 is arranged on one side of the connecting tube 31, and the trigger button 24 is arranged on the mounting seat 23; one end of the connecting plate 22 is connected to the outer edge of the connecting tube 31, the connecting plate 22 is perpendicular to the axial direction of the connecting tube 31, and the connecting plate 22 is used to rotate with the connecting tube 31 to press the trigger button 24; the controller is electrically connected to the trigger button 24, and the trigger button 24 is used to send signal data to the controller respectively. The controller is used to control the linkage mechanism 3 to open the grounding switch after receiving the signal data and the electric lock 21 locks the cabinet door 11; the controller is also used to control the electric lock 21 to open the cabinet door 11 when no signal data is received and the linkage mechanism 3 closes the grounding switch. The setting of the connecting plate 22 enables the linkage mechanism 3 and the electric lock 21 to be mechanically linked, and combined with the re-authentication of the signal data, a double guarantee is achieved to ensure that the cabinet door 11 and the grounding switch are more tightly locked.

[0047] The electronic key 4 includes a second shell 41 and a display screen 42. The display screen 42 is located at one end of the second shell 41 and is used to display a feature code. The recognition window of the recognition mechanism 13 is arranged at the bottom of the insertion slot 14. The electronic key 4 is used to enter the insertion slot 14 so that the recognition window of the recognition mechanism 13 is arranged opposite to the display screen 42.

[0048] Specifically, the safety interlock device for the grounding switch of the central cabinet is further provided with a communicator, which is electrically connected to the display screen 42 and the controller, and the controller is used to send any characteristic code to the display screen 42 through the communicator, so that the display screen 42 displays the corresponding characteristic code. The characteristic code recognized each time when the switch is turned on is different, which further improves the safety performance.

[0049] A limiting hole 43 is provided on the top side of the second housing 41; the insertion slot 14 is located on the side of the first housing 12 away from the cabinet door 11, and a mounting hole 15 is provided on the top side of the insertion slot 14. A lifter 16 is provided in the mounting hole 15, and the output end of the lifter 16 is provided near the insertion slot 14. The controller is used to control the lifting and lowering of the lifter 16 according to the passing information so that the output end of the lifter 16 enters the limiting hole 43. The cooperation between the lifter 16 and the limiting hole 43 fixes the electronic key 4 in the insertion slot 14, so as to avoid the electronic key 4 being accidentally pulled out when the door is not closed.

[0050] Specifically, the limiting hole 43 is a round hole.

[0051] A control button 44 is disposed at one end of the second housing 41 away from the display screen 42 . The control button 44 is electrically connected to the display screen 42 . The control button 44 is used to control the display screen 42 to display a feature code.

[0052] Workflow:

[0053] Step 1, the electronic key 4 is inserted into the insertion slot 14, and the control button 44 is pressed, and the display screen 42 displays the characteristic code.

[0054] Step 2: the identification mechanism 13 identifies the feature code and sends a pass message to the controller.

[0055] In step 3, the telescopic device 36 drives the inner tube 5 to move forward so that the output end of the grounding switch enters the slot 54; the motor 33 drives the connecting tube 31 to respectively drive the connecting tube 31 and the connecting plate 22 to rotate forward, so that the connecting plate 22 is away from the trigger button 24, and the grounding switch enters the closed state; the electric lock 21 opens the cabinet door 11; specifically, an adjustment gap is left between the inner wall surface of the slot 54 and the outer wall surface of the output end, and the adjustment gap is used for the output end of the grounding switch to enter and exit the slot 54 when the cabinet door 11 is opened and closed.

[0056] Step 4, close the cabinet door 11, press the control button 44 again, the display screen 42 is turned off, and the electronic key 4 is pulled out;

[0057] Step 5, the controller controls the motor 33 to drive the connecting tube 31 to drive the connecting tube 31 and the connecting plate 22 to reverse respectively; so that the connecting plate 22 presses the trigger button 24, and the grounding switch enters the open state; the telescopic device 36 drives the inner tube 5 to move backward, so that the card slot 54 is away from the output end of the grounding switch; the electric lock 21 locks the cabinet door 11.

[0058] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A safety interlocking device for a grounding switch for a central cabinet, characterized in that: The invention comprises a cabinet, a cabinet door, a controller, a door lock mechanism, a linkage mechanism, a first shell, an identification mechanism and an electronic key, wherein the first shell is arranged on the side of the cabinet door away from the cabinet, the linkage mechanism and the identification mechanism are both arranged in the first shell, the first shell is provided with an insertion slot, the identification mechanism is connected to the insertion slot, the electronic key is used to enter the insertion slot and connect to the identification mechanism, so that the electronic key sends a characteristic code to the identification mechanism; the door lock mechanism is arranged on the other side of the cabinet door away from the linkage mechanism, the linkage mechanism is connected to the door lock mechanism, and the linkage mechanism is used to control the opening or closing of the grounding switch in the cabinet; the controller is electrically connected to the linkage mechanism, the door lock mechanism and the identification mechanism respectively, the identification mechanism is used to send passing information to the controller after the passing of the characteristic code; the controller is used to control the linkage mechanism and the door lock mechanism respectively according to the passing information, so that the cabinet door is opened after the grounding switch is closed, or the grounding switch is opened after the cabinet door is closed; The electronic key comprises a second housing and a display screen, wherein the display screen is located at one end of the second housing and is used to display a characteristic code; the identification window of the identification mechanism is arranged at the bottom of the insertion slot, and the electronic key is used to enter the insertion slot so that the identification window of the identification mechanism is arranged opposite to the display screen; A limiting hole is provided on the top side of the second shell; the insertion slot is located on a side of the first shell away from the cabinet door, a mounting hole is provided on the top side of the insertion slot, a lifter is provided in the mounting hole, an output end of the lifter is provided close to the insertion slot, and the controller is used to control the lifting of the lifter according to the passing information so that the output end of the lifter enters the limiting hole; A control button is disposed at one end of the second housing away from the display screen, the control button is electrically connected to the display screen, and the control button is used to control the display screen to display a feature code; The limiting hole is a round hole; The linkage mechanism includes a driver and a connecting tube, and the driver is arranged in the first shell; the driver also includes a telescope and a connecting rod, one end of the connecting rod is connected to the output end of the telescope, and the other end of the connecting rod is rotatably connected to the end of the inner tube away from the cabinet, and the telescope is used to drive the inner tube to slide back and forth along the axial direction of the connecting tube through the connecting rod; the controller is electrically connected to the telescope, and the controller is used to control the telescope to drive the inner tube to move according to the passing information, so that the end of the inner tube with the card slot is close to or away from the control end of the grounding switch; the connecting tube passes through the cabinet door, and the end of the connecting tube away from the cabinet extends into the first shell, the connecting tube is perpendicular to the cabinet door, and the connecting tube and the cabinet door are rotatably connected through a bearing; the connecting tube A through groove is provided on the inner wall surface of the cylinder, and the through groove extends along the axial direction of the connecting cylinder. A coaxial inner cylinder is arranged inside the connecting cylinder, and a slider is arranged on the outer wall surface of the inner cylinder, and the slider enters the through groove; the driver drives and connects the connecting cylinder and the inner cylinder respectively, and the driver is used to drive the connecting cylinder to rotate and drive the inner cylinder to move along the axial direction of the connecting cylinder respectively; a clamping groove is provided at one end of the inner cylinder away from the telescopic device, and the clamping groove is used to accommodate the control end of the grounding switch, so that the inner cylinder drives the control end of the grounding switch to rotate and control the opening and closing of the grounding switch; the controller is electrically connected to the driver, and the controller is used to control the driver to first drive the inner cylinder to clamp the control end of the grounding switch, and then drive the connecting cylinder to drive the control end of the grounding switch to rotate forward and reverse through the inner cylinder, so that the grounding switch is opened or closed; The door lock mechanism includes an electric lock, which is used to open and close the cabinet door; the controller is electrically connected to the cabinet door, and the controller is used to control the linkage mechanism to open the grounding switch after the electric lock locks the cabinet door, or control the electric lock to open the cabinet door after the linkage mechanism closes the grounding switch; The door lock mechanism also includes a connecting plate, a mounting seat and a trigger button, wherein the connecting plate and the mounting seat are both arranged on a side of the cabinet door away from the first shell; the mounting seat is arranged on one side of the connecting tube, and the trigger button is arranged on the mounting seat; one end of the connecting plate is connected to the outer edge of the connecting tube, the connecting plate is perpendicular to the axial direction of the connecting tube, and the connecting plate is used to rotate with the connecting tube to press the trigger button; the controller is electrically connected to the trigger button, and the trigger button is used to send signal data to the controller respectively, and the controller is used to control the linkage mechanism to open the grounding switch after receiving the signal data and the electric lock locks the cabinet door; the controller is also used to control the electric lock to open the cabinet door if the signal data is not received and the linkage mechanism closes the grounding switch; The safety interlock device for the grounding switch of the central cabinet is also provided with a communicator, which is electrically connected to the display screen and the controller. The controller is used to send any characteristic code to the display screen through the communicator so that the display screen displays the corresponding characteristic code.

2. A safety interlocking device for a grounding switch for a central cabinet according to claim 1, characterized in that: The driver comprises a motor, a driving gear and a driven gear, wherein the driven gear is sleeved on the outer edge of the connecting tube, the output end of the motor is sleeved with the driving gear, and the driving gear is meshed with the driven gear; The controller is electrically connected to the motor, and is used to control the motor to drive the driving gear to drive the driven gear to rotate after the inner cylinder is clamped with the grounding switch, so that the connecting cylinder drives the control end of the grounding switch to rotate forward and reverse through the inner cylinder.

Images