A door-opening discharge device

Abstract

The present invention relates to a door-opening discharge device, comprising a movable pull rod structure and a discharge part, wherein the movable pull rod structure comprises a pull rod, a movable block, a fixed plate, a base, and a safety rod, and the discharge part comprises a plug, a socket, and a connecting wire, wherein the connection terminal of the socket is connected to an electrical component to be discharged through a wire, the socket is fixed on the movable block, the plug is fixed on the fixed plate, the connection terminal of the plug is connected to a grounding wire through a wire, the center height of the plug is consistent with the center height of the socket, and the movable block and the socket are driven by the pull rod to perform plugging and unplugging actions. The device is applied to an electrical cabinet, and through a simple mechanical transmission structure, automatic discharge is achieved during the door opening process, and current shock can be suppressed to avoid accidents caused by improper operation of operators, thereby ensuring the safety of operators and equipment.

Description

Technical Field

[0001] This patent application belongs to the technical field of safety protection devices for electrical cabinets, and more specifically, relates to a door-opening discharge device. Background Art

[0002] The status of existing technical products and their shortcomings: There is a mechanical interlock between the door opening of the existing electrical cabinet and the power switch, that is, the cabinet door is allowed to be opened only when the switch is disconnected, which has a good protective effect on personal safety. However, there are some energy storage components in the cabinet. Although the power is off, the energy storage components still have electrical energy. Once a person touches them, the energy storage components will discharge through the human body, causing safety accidents such as electric shock. At present, in order to ensure the safety of the operation, the operating procedures are used to avoid accidents. The operators are required to cut off the power and test the electricity of the electrical components before the operation, and the operation is allowed only after discharge. However, in actual work, there are always cases of illegal operation. The operation is carried out without discharge, resulting in electric shock accidents; or after the operation is completed, the power is supplied without removing the ground discharge wire, resulting in a short circuit accident. Secondly, because there is no current limiting measure, the discharge will cause instantaneous current shock and sparks, which will not only damage the device, but also easily cause other safety accidents. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a door-opening discharge device, which can realize automatic discharge during the door opening process and can suppress current shock to ensure the safety of operators and equipment.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is:

[0005] A door-opening discharge device comprises a movable pull rod structure and a discharge part that cooperate with each other, wherein:

[0006] The movable pull rod structure comprises a protruding block arranged on the door of the electrical cabinet, a pull rod rotatably connected to the protruding block through a connecting bolt I, a movable block connected to the other end of the pull rod, a base arranged on the inner plate of the electrical cabinet and for the movable block to move, a fixing plate arranged on the top of the base, and a convex plate arranged on the fixing plate for mounting a discharge part (latch pin), the base is a U-shaped groove structure, and the movable block is a convex block structure;

[0007] The discharge part comprises a socket arranged on the moving block, a plurality of fixing belts arranged on the moving block for fixing the socket, and a plug arranged on the convex plate of the fixing plate, wherein the center height of the plug corresponds to the center height of the socket.

[0008] Preferably, the jack comprises an insulating outer sleeve, a plurality of fixing grooves arranged on the outer wall of the insulating outer sleeve and matched with the fixing belt, a terminal arranged on one end of the insulating outer sleeve, a conductive inner sleeve arranged in the insulating outer sleeve and connected to the terminal, a protective cap arranged on the other end of the insulating outer sleeve, and a cross opening arranged on the end surface of the protective cap, one end of the conductive inner sleeve is conical and the other end is open, one end of the conductive inner sleeve is connected to the terminal, and a sealant is filled between the insulating outer sleeve and the conductive inner sleeve;

[0009] The plug includes a conical copper head, a front copper ring connected to the straight end of the conical copper head, a terminal copper ring spaced apart from the front copper ring, a current-limiting resistor arranged in the front copper ring and the terminal copper ring, connecting wires arranged at both ends of the current-limiting resistor, a terminal post arranged on the outer wall of the terminal copper ring, a wire connected to the terminal post, a grounding point connected to the other end of the wire, a sealant filled at the end of the terminal copper ring, a nut for embedding the connection sealant and a fixing plate, and the space between the front copper ring and the terminal copper ring is also filled with sealant; the interior of the conical copper head is connected to one end of the current-limiting resistor through the connecting wire, and the other end of the current-limiting resistor is also connected to the inner wall of the terminal copper ring through the connecting wire.

[0010] Preferably, a safety rod is further provided, one end of which is connected to the moving block by bolts, and the other end of which extends to the position of the door of the electrical cabinet.

[0011] Preferably, the sealant is epoxy resin.

[0012] Preferably, the protective cap is made of plastic.

[0013] Preferably, there are two fixing grooves with a specification of 2×2 mm; there are two fixing belts, and the fixing belts are made of elastic material.

[0014] Preferably, the current limiting resistor is a 2W metal film current limiting resistor with a specification of 11 mm in length and 4.5 mm in diameter.

[0015] Due to the adoption of the above technical solution, the beneficial effect achieved by the present invention is that the technology is applied to the electrical cabinet to realize automatic discharge during the door opening process, thereby avoiding accidents caused by improper operation of operators and ensuring the safety of operators and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the overall structure of the present invention;

[0017] Figure 2 A top view of the mobile mechanism of the present invention;

[0018] Figure 3 It is a front view of the mobile mechanism of the present invention;

[0019] Figure 4A top view of a fixed jack of a moving block of the present invention;

[0020] Figure 5 It is a front view of the fixed socket of the moving block of the present invention;

[0021] Figure 6 The fixed plate structure of the present invention is schematically shown in FIG. Figure 1 ;

[0022] Figure 7 The fixed plate structure of the present invention is schematically shown in FIG. Figure 2 ;

[0023] Figure 8 It is a schematic diagram of the plug structure of the present invention;

[0024] Fig. 9 It is a schematic diagram of the jack structure of the present invention;

[0025] Fig.10 It is a schematic diagram of the protective cap of the present invention;

[0026] Among them: 1. conical copper head, 2. connecting wire, 3. front copper ring, 4. sealant, 5. current limiting resistor, 6. end copper ring, 7. internal gap, 8. nut, 9. wire, 10. grounding point, 11. terminal, 12. conductive inner sleeve, 13. protective cap, 14. fixing groove, 15. insulating outer sleeve, 16. electrical components to be discharged, 17. protruding block, 18. door shaft, 19. cabinet door, 20. connecting bolt I, 21. base, 22. pull rod, 23. moving block, 24. fixing plate, 25. connecting bolt II, 26. safety rod, 30. socket, 31. fixing belt, 32. pin. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the embodiments.

[0028] The present invention discloses a door-opening discharge device, comprising a movable pull rod structure and a discharge part that cooperate with each other, wherein:

[0029] The movable rod structure includes a protruding block 17 arranged on the door 19 of the electrical cabinet, a rod 22 rotatably connected to the protruding block 17 through a connecting bolt Ⅰ 20, a movable block 23 connected to the other end of the rod 22, a base 21 arranged on the inner plate of the electrical cabinet and for the movable block 23 to move, a fixing plate 24 arranged on the top of the base 21, and a convex plate arranged on the fixing plate 24 for mounting a discharge part (a plug 32), the base 21 is a U-shaped groove structure, and the movable block 23 is a convex block structure;

[0030] The discharge part includes a socket 30 provided on the moving block 23, a plurality of fixing belts 31 provided on the moving block 23 for fixing the socket 30, and a plug 32 provided on the convex plate of the fixing plate 24, wherein the center height of the plug 32 corresponds to the center height of the socket 30, wherein:

[0031] The jack 30 includes an insulating jacket 15, a plurality of fixing grooves 14 arranged on the outer wall of the insulating jacket 15 and matched with the fixing belt 31, a terminal 11 arranged on one end of the insulating jacket 15, a conductive inner jacket 12 arranged in the insulating jacket 15 and connected to the terminal 11, a protective cap 13 arranged on the other end of the insulating jacket 15, and a cross opening arranged on the end surface of the protective cap 13. One end of the conductive inner jacket 12 is conical and the other end is open. One end of the conductive inner jacket 12 is connected to the terminal 11. A sealant 4 is filled between the insulating jacket 15 and the conductive inner jacket 12.

[0032] The plug 32 includes a conical copper head 1, a front copper ring 3 connected to the straight end of the conical copper head 1, an end copper ring 6 spaced apart from the front copper ring 3, a current limiting resistor 5 arranged in the front copper ring 3 and the end copper ring 6, connecting wires 2 arranged at both ends of the current limiting resistor 5, a terminal post 11 arranged on the outer wall of the end copper ring 6, a wire 9 connected to the terminal post 11, a grounding point 10 connected to the other end of the wire 9, a sealant 4 filled at the end of the end copper ring 6, and a nut 8 for embedding the connection sealant 4 and the fixing plate 24. The space between the front copper ring 3 and the end copper ring 6 is also filled with the sealant 4; the interior of the conical copper head 1 is connected to one end of the current limiting resistor 5 through the connecting wire 2, and the other end of the current limiting resistor 5 is also connected to the inner wall of the end copper ring 6 through the connecting wire 2.

[0033] A safety rod 26 is also provided, one end of which is connected to the moving block 23 by bolts, and the other end of which extends to the position of the electrical cabinet door 19 .

[0034] The sealant 4 is epoxy resin. The protective cap 13 is made of plastic, and the fixing grooves 14 are two, with a specification of 2×2 mm; the fixing belts 31 are two, and the fixing belts 31 are made of elastic material. The current limiting resistor 5 is a 2W metal film current limiting resistor, with a specification of 11 mm in length and 4.5 mm in diameter.

[0035] During manufacturing, one end of the pull rod 22 is connected to the connecting bolt 20 of the protruding block 17 of the cabinet door 19, and the distance between the connecting bolt 20 and the door shaft 18 is 50mm. The pull rod 22 can rotate freely around the connecting bolt 20. The other end of the pull rod 22 is connected to the moving block 23, which is connected by bolts, and the pull rod 22 can rotate freely around the bolts. The base 21 is made of a 36×50×1mm galvanized sheet, and both sides are bent toward the middle to form a U-shaped groove. The moving block 23 is in the U-shaped groove and is driven by the pull rod 22 to move linearly. The base 21 is fixed to the inner plate of the electrical cabinet by bolts. One end of the safety rod 26 is connected to the middle of the connecting plate of the moving block 23 by bolts, and the other end extends to the position of the cabinet door 19, which is used to check whether the grounding plug is unplugged. If it is not unplugged, it will be pulled out by the safety rod 26 to prevent the phenomenon of power transmission with the grounding wire.

[0036] The base 21 is made of a galvanized sheet with a length of 36 mm, a width of 50 mm and a thickness of 1 mm. In the length direction, both sides are bent 2.5 mm toward the middle to form a U-shaped groove with a height of 2 mm, forming a base with a length of 50 mm and a width of 25 mm.

[0037] The moving block 23 is made of a galvanized sheet with a length of 30 mm, a width of 20 mm and a thickness of 1 mm, and is processed into a convex block with a convex middle of 2.5 mm and a width of 20 mm, and 2.5 mm is left on both sides.

[0038] The fixing plate 24 is made of a galvanized plate with a length of 26 mm, a width of 5 mm, and a thickness of 1 mm, and a 15×15 mm protruding plate in the middle. The fixing plate is formed by bending the protruding plate 90 degrees.

[0039] The pull rod 22 is a galvanized sheet with a length of 200 mm, a width of 4 mm, and a thickness of 2 mm, and round holes are processed at both ends.

[0040] Safety rod 26, a galvanized sheet with a length of 190 mm, a width of 4 mm and a thickness of 2 mm.

[0041] The conical copper head 1 is welded to one end of the front copper ring 3, and the inside of the conical copper head 1 is welded to one end of the resistor 5 through the connecting wire 2. The other end of the resistor 5 is welded to the inner wall of the terminal copper ring 6, and the resistor 5 is placed inside the copper ring. There is a 1mm gap between the front copper ring 3 and the terminal copper ring 6. The terminal copper ring is welded to the terminal terminal 11. By injecting epoxy resin into the gap 7 inside the copper ring, the conical copper head 1, the front copper ring 3, the terminal copper ring 6, the resistor 5, and the wire 2 are solidified together to form a cylindrical shape, and the terminal copper ring 6 protrudes 5mm of the resin, and the M4 nut 8 is embedded in the terminal resin.

[0042] Conical copper head 1, 5mm long, 6mm in diameter;

[0043] Front copper ring 3, outer diameter 6mm, wall thickness 0.5mm, length 5mm;

[0044] The end copper ring 6 has an outer diameter of 6 mm, a wall thickness of 0.5 mm, and a length of 10 mm;

[0045] The resistor uses a 2W metal film resistor (length 11mm, diameter 4.5mm).

[0046] The jack is composed of an insulating outer sleeve 15, a conductive inner sleeve 12, a protective cap 13, a terminal 11, a wire 9, etc. The conductive inner sleeve 12 is made of a round copper tube, one end of which is made into a cone shape and connected to the terminal 11, and the other end is open. The insulating outer sleeve 15 and the conductive inner sleeve 12 are filled with resin. The protective cap 13 is formed of plastic, and the end face of the cap has a cross opening and two 2×2mm fixing grooves 14.

[0047] Insulation jacket 15, inner diameter 9mm, wall thickness 3mm, length 20mm, withstand voltage 10KV;

[0048] Conductive inner sleeve 12, outer diameter 8mm, wall thickness 0.75mm, length 15mm;

[0049] The protective cap 13 has an inner diameter of 9 mm, a wall thickness of 3 mm and a length of 3 mm.

[0050] At the same time, according to the amount of electricity stored in the electrical components, the resistance value of the current limiting resistor 5 is modified, and according to the layout and size of the electrical cabinet, the design dimensions are modified within the protection range.

[0051] When the device is discharging, when the electrical cabinet door is opened, the pull rod 22 drives the moving block 23 to move toward the outside of the cabinet door, and the socket 30 fixed with the moving block 23 moves along and gradually inserts into the plug 32. When the plug 32 just contacts the socket 30, the discharge current will be limited by the current limiting resistor 5 in the plug 32. As the electrical cabinet door continues to open, the depth of the plug 32 inserted into the socket 30 increases, the short-circuited current limiting resistor 5, and the current limiting resistor 5 between the socket 30 and the plug 32 becomes very small, and the electrical equipment 16 to be discharged directly contacts the ground for discharge. The electrical cabinet door is opened for discharge, and the grounding is maintained. When the cabinet door is closed, the pull rod 22 drives the moving block 23 to move toward the inside of the cabinet door, and the socket 30 fixed with the moving block 23 moves along, and the plug 32 is gradually pulled out. The cabinet door is closed, and the socket 30 is completely disconnected from the plug 32. The electrical cabinet door is closed and the grounding is automatically released. If the transmission mechanism fails and the socket 30 cannot be completely disengaged from the pin 32, the safety rod 26 cannot move into place. When the cabinet door is closed, the cabinet door will push the safety rod 26, and the socket 30 fixed to the safety rod 26 by the moving block 23 will be pushed out of the pin 32, preventing the ground wire from being used for power transmission and causing an accident.

Claims

1. An open-door discharge device, characterized in that: It includes a movable pull rod structure and a discharge part that cooperate with each other, wherein: The movable pull rod structure comprises a protruding block (17) arranged on an electrical cabinet door (19), a pull rod (22) rotatably connected to the protruding block (17) via a connecting bolt I (20), a movable block (23) connected to the other end of the pull rod (22), a base (21) arranged on an inner plate of the electrical cabinet and for the movable block (23) to move, a fixing plate (24) arranged on the top of the base (21), and a convex plate arranged on the fixing plate (24) for mounting a discharge part, wherein the base (21) is a U-shaped groove structure, and the movable block (23) is a convex block structure; The discharge part comprises a socket (30) arranged on the moving block (23), a plurality of fixing belts (31) arranged on the moving block (23) for fixing the socket (30), and a plug (32) arranged on the convex plate of the fixing plate (24), wherein the center height of the plug (32) corresponds to the center height of the socket (30); The jack (30) comprises an insulating outer sleeve (15), a plurality of fixing grooves (14) arranged on the outer wall of the insulating outer sleeve (15) and cooperating with the fixing belt (31), a terminal (11) arranged on one end of the insulating outer sleeve (15), a conductive inner sleeve (12) arranged in the insulating outer sleeve (15) and connected to the terminal (11), a protective cap (13) arranged on the other end of the insulating outer sleeve (15), and a cross opening arranged on the end surface of the protective cap (13); one end of the conductive inner sleeve (12) is conical and the other end is open; one end of the conductive inner sleeve (12) is conical and connected to the terminal (11); and a sealant (4) is filled between the insulating outer sleeve (15) and the conductive inner sleeve (12); The plug (32) comprises a conical copper head (1), a front copper ring (3) connected to the straight end of the conical copper head (1), a terminal copper ring (6) arranged at a distance from the front copper ring (3), a current limiting resistor (5) arranged in the front copper ring (3) and the terminal copper ring (6), a connecting wire (2) arranged at both ends of the current limiting resistor (5), a terminal post (11) arranged on the outer wall of the terminal copper ring (6), a wire (9) connected to the terminal post (11), a grounding point (10) connected to the other end of the wire (9), and a filling A sealant (4) is filled at the end of the end copper ring (6), and a nut (8) is embedded to connect the sealant (4) and the fixing plate (24). The gap between the front copper ring (3) and the end copper ring (6) is also filled with the sealant (4). The interior of the conical copper head (1) is connected to one end of a current limiting resistor (5) through a connecting wire (2), and the other end of the current limiting resistor (5) is also connected to the inner wall of the end copper ring (6) through the connecting wire (2). The current limiting resistor (5) adopts a metal film current limiting resistor.

2. The open-door discharge device according to claim 1, characterized in that: A safety rod (26) is also provided, one end of which is connected to the moving block (23) by means of bolts, and the other end of which extends to the position of the electrical cabinet door (19).

3. The open-door discharge device according to claim 2, characterized in that: The sealant (4) is epoxy resin.

4. The open-door discharge device according to claim 3, characterized in that: The protective cap (13) is made of plastic.

5. The open-door discharge device according to claim 4, characterized in that: There are two fixing grooves (14) with a specification of 2×2 mm; there are two fixing belts (31), and the fixing belts (31) are made of elastic material.

6. The open-door discharge device according to claim 5, characterized in that: The metal film current limiting resistor (5) has a length of 11 mm and a diameter of 4.5 mm.

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