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CN-224233571-U - Low-voltage soft starting structure using insulating plate to replace metal fixing plate

CN224233571UCN 224233571 UCN224233571 UCN 224233571UCN-224233571-U

Abstract

The utility model discloses a low-voltage soft starting structure using insulating plates to replace metal fixing plates, which comprises a sheet metal bottom cross beam, low-voltage soft starter valve bank main bodies, bypass contactors, insulating plates, clamping groove type fastening bolts and interval insulating paper, wherein a plurality of low-voltage soft starter valve bank main bodies are arranged between the two sheet metal bottom cross beams, the insulating plates are fixed on two sides of each low-voltage soft starter valve bank main body and are detachably connected with the adjacent sheet metal bottom cross beams through the clamping groove type fastening bolts, the insulating plates made of glass fiber reinforced plastics are used for replacing the prior insulating paper and screws with insulating jackets, the low-voltage soft starter valve bank main bodies can be directly fastened at the positions of the sheet metal bottom cross beams by using the metal bolts, the 380V voltage class insulating requirement can be met, and glass fiber reinforced plastics profiles can simultaneously meet the insulating requirement and the pressure strength requirement, so that the installation structure and steps are greatly simplified under the condition of ensuring the structural stability.

Inventors

  • Xie Renwu
  • ZHANG BIN
  • CHEN YANFENG
  • LIN YONGSHENG
  • Zhuo Qiluan

Assignees

  • 嘉兴睿能奇电电气有限公司

Dates

Publication Date
20260512
Application Date
20250331

Claims (6)

  1. 1. The utility model provides an use insulation board to replace low pressure soft start structure of metal fixed plate, its characterized in that includes panel beating bottom crossbeam (1), low pressure soft starter valves main part (2), bypass contactor (3), insulation board (4), draw-in groove fastening bolt (5) and interval insulating paper (6), is provided with a plurality of low pressure soft starter valves main part (2) between two panel beating bottom crossbeam (1), the both sides of low pressure soft starter valves main part (2) all are fixed with insulation board (4), insulation board (4) all can dismantle with adjacent panel beating bottom crossbeam (1) through draw-in groove fastening bolt (5) and be connected, insulation board (4) are glass steel; The clamping groove type fastening bolt (5) comprises a screw cap (51), a screw rod portion (52) with the diameter smaller than the screw cap (51) and a polish rod portion (53) with the diameter identical to that of the screw rod portion (52), an annular clamping groove (54) is formed in the clamping groove type fastening bolt (5) and located between the screw rod portion (52) and the polish rod portion (53), a compression pad (55) is connected to the outer side of the screw rod portion (52) in a threaded mode, a plurality of inserting holes (11) are formed in the metal plate bottom cross beam (1), narrow grooves (111) communicated with the inserting holes are formed in the side of the inserting holes (11), concave grooves (112) are formed in the periphery of the narrow grooves (111) and are located in the lower side of the metal plate bottom cross beam (1), and the clamping groove type fastening bolt (5) is matched with the inserting holes (11) after penetrating through an insulating plate (4).
  2. 2. A low voltage soft start structure using an insulating plate instead of a metal fixing plate as set forth in claim 1, wherein the insulating plate (4) is provided with a through hole (41) for embedding a clamping groove type fastening bolt (5), and the diameter of the through hole (41) is consistent with the diameter of the screw part (52).
  3. 3. A low-voltage soft start structure using an insulating plate instead of a metal fixing plate according to claim 1, characterized in that the cross-sectional structure of the polish rod portion (53) is adapted to the insertion hole (11) and the recess groove (112).
  4. 4. A low voltage soft start structure using insulating plates instead of metal fixing plates according to claim 1, characterized in that the diameter of the inner edge of the annular clamping groove (54) is consistent with the width of the narrow groove (111), and the height of the annular clamping groove (54) is consistent with the thickness of the sheet metal bottom cross beam (1).
  5. 5. The low-voltage soft starting structure using the insulating plate to replace the metal fixing plate according to claim 1 is characterized in that bent edges (12) are arranged on two sides of the bottom of the sheet metal bottom cross beam (1), and a plurality of assembly holes (13) are formed in the sheet metal bottom cross beam (1).
  6. 6. The low-voltage soft start structure using an insulating plate to replace a metal fixing plate according to claim 1, wherein bypass contactors (3) are arranged on the low-voltage soft starter valve group main bodies (2), and spacing insulating paper (6) is clamped between adjacent low-voltage soft starter valve group main bodies (2).

Description

Low-voltage soft starting structure using insulating plate to replace metal fixing plate Technical Field The utility model relates to the technical field of low-voltage soft starters, in particular to a low-voltage soft starting structure using an insulating plate to replace a metal fixing plate. Background The low-voltage soft starter is an electrical device for controlling the starting and running of a low-voltage motor, and realizes the functions of stable starting, reduced starting impact, motor and load protection and the like by controlling the input voltage and current of the motor, and the core component of the low-voltage soft starter is a Silicon Controlled Rectifier (SCR), is a semiconductor device and can adjust the conduction degree of the low-voltage soft starter by controlling a trigger signal so as to realize voltage control; The insulation material (such as insulation board, insulation paper, etc.) used in the low-voltage soft starter must have high insulation resistance and good electrical insulation performance to prevent current leakage and short circuit, the insulation board structure of the traditional low-voltage soft starter is composed of a metal fixing board, a screw with an insulation sheath and insulation paper, when in installation, the metal fixing board is assembled and connected with a base through the screw with the insulation sheath, the insulation paper is padded between the metal fixing board and the base, thus meeting the electrical clearance requirement, but the assembly structure is complex, the installation process is complicated, the time is long, the assembly and disassembly are inconvenient, and the insulation paper and the insulation sheath are used for a long time with ageing and cracking risks, so that great potential safety hazards exist. Disclosure of utility model The utility model aims to provide a low-voltage soft starting structure using an insulating plate to replace a metal fixing plate, so as to solve the technical problems that the traditional low-voltage soft starter provided in the background art is complex in assembly structure, complex in installation process, long in time consumption, inconvenient to assemble and disassemble, and has ageing and cracking risks when insulating paper and an insulating sheath are used for a long time, and has great potential safety hazards. The technical scheme for solving the technical problems is that the low-voltage soft starting structure comprises a sheet metal bottom cross beam, a low-voltage soft starter valve bank main body, a bypass contactor, an insulating plate, clamping groove type fastening bolts and interval insulating paper, wherein a plurality of low-voltage soft starter valve bank main bodies are arranged between the two sheet metal bottom cross beams, the insulating plates are fixed on two sides of each low-voltage soft starter valve bank main body, and are detachably connected with the adjacent sheet metal bottom cross beams through the clamping groove type fastening bolts, and the insulating plates are made of glass fiber reinforced plastics; The clamping groove type fastening bolt comprises a nut, a screw rod part with the diameter smaller than that of the nut and a polish rod part with the diameter identical to that of the screw rod part, an annular clamping groove is formed in the clamping groove type fastening bolt and located between the screw rod part and the polish rod part, a compression pad is connected to the outer side of the screw rod part in a threaded mode, a plurality of inserting holes are formed in the cross beam at the bottom of the metal plate, narrow grooves communicated with the inserting holes are formed in the side of the inserting holes, concave grooves are formed in the periphery of the narrow grooves and in the lower side of the cross beam at the bottom of the metal plate, and the clamping groove type fastening bolt is matched with the inserting holes after penetrating through the insulating plate. As a further aspect of the present utility model, the insulating plate is provided with a through hole for embedding a slot-type fastening bolt, and the diameter of the through hole is identical to the diameter of the screw portion. As a further scheme of the utility model, the cross section structure of the polish rod part is matched with the plug hole and the concave groove. As a further scheme of the utility model, the diameter of the inner edge of the annular clamping groove is consistent with the width of the narrow groove, and the height of the annular clamping groove is consistent with the thickness of the sheet metal bottom cross beam. As a further scheme of the utility model, bent edges are arranged on two sides of the bottom of the sheet metal bottom cross beam, and a plurality of assembly holes are formed in the sheet metal bottom cross beam. As a further scheme of the utility model, bypass contactors are arranged on the low-voltage soft starter valve group main bodie