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CN-122000709-A - Aluminum row bolt connection structure and aluminum row processing method

CN122000709ACN 122000709 ACN122000709 ACN 122000709ACN-122000709-A

Abstract

The application discloses an aluminum row bolt connection structure and an aluminum row processing method, which relate to the field of power equipment and comprise an aluminum row main body, wherein a first metal functional sheet is fixed on the aluminum row main body, the aluminum row main body is provided with a through hole corresponding to the bolt, and a conical locking assembly is arranged in the through hole in the aluminum row main body. The first metal functional sheet is a pure nickel sheet with the thickness of 0.1mm, the second metal functional sheet is a nickel-copper alloy sheet with the thickness of 0.2mm, and the bimetal functional sheets are arranged in a differentiated mode, so that the functions of optimizing connection and strengthening support are realized, the mechanical reliability and the electrical stability of the integral connection structure are optimized, the conical locking assembly provides active mechanical locking, and dual creep-resistant guarantee is formed between the conical locking assembly and the functional sheets.

Inventors

  • LIU YUBIN
  • LUO CHUANG
  • HE LIANG
  • YUAN ZHIPENG
  • LIAO JIANYE
  • LI DONGMENG

Assignees

  • 苏州佰特锐工业技术有限公司

Dates

Publication Date
20260508
Application Date
20260206

Claims (8)

  1. 1. The utility model provides an aluminum row bolt connection structure, includes aluminum row main part (1), its characterized in that is fixed with first metal function piece (2) on aluminum row main part (1), one side that first metal function piece (2) were kept away from to aluminum row main part (1) is fixed with second metal function piece (3), the thickness of second metal function piece (3) is greater than first metal function piece (2), be provided with bolt (4) on aluminum row main part (1), set up through-hole (6) that correspond with bolt (4) on aluminum row main part (1), be provided with toper locking subassembly (5) in through-hole (6) on aluminum row main part (1).
  2. 2. The aluminum row bolt connecting structure according to claim 1, wherein the conical locking assembly (5) comprises a conical ring (51) arranged on the aluminum row main body (1), the conical ring (51) is located in a through hole (6) in the aluminum row main body (1), a tooth-shaped structure (52) is arranged on the outer surface of the conical ring (51), a conical block (53) is fixed to the end portion of the bolt (4), and the inclined surface of the conical block (53) is matched with the inner conical surface of the conical ring (51).
  3. 3. The aluminum row bolt connecting structure according to claim 2, wherein a plurality of locking blocks (54) distributed circumferentially are arranged on the conical ring (51), and the locking blocks (54) penetrate through the conical ring (51) and are movably connected with the conical ring (51).
  4. 4. An aluminum row bolt connection structure according to claim 2, wherein the outer surface of the second metal functional sheet (3) contacting with the outer conductor is provided with a micro-tooth structure (55).
  5. 5. The aluminum row bolt connecting structure according to claim 1, wherein a micro-anchoring layer (9) is arranged on the joint surface of the aluminum row main body (1) and the first metal functional sheet (2) and the second metal functional sheet (3), and the micro-anchoring layer (9) is formed on the surface of the aluminum row main body (1) through laser texturing.
  6. 6. The aluminum row bolt connecting structure according to claim 1, wherein a compensation washer (7) is arranged between the head of the bolt (4) and the first metal functional sheet (2), and the compensation washer (7) is an elastic sleeve part extending into the through hole (6).
  7. 7. The aluminum row bolt connecting structure according to claim 6, wherein a plurality of protruding structures (8) are fixed on one surface of the first metal functional sheet (2) far away from the aluminum row main body (1).
  8. 8. An aluminum busbar processing method is characterized in that the processing method is suitable for the aluminum busbar bolt connecting structure according to any one of the claims 1 to 7, and the processing method comprises the following steps: S1, surface pretreatment, namely cleaning and deoxidizing the surfaces of a first metal functional sheet (2) and a second metal functional sheet (3) to be welded on an aluminum row main body (1); S2, constructing a micro-anchoring layer (9), and processing the surfaces of the first metal functional sheet (2) and the second metal functional sheet (3) to be welded on the aluminum row main body (1) through laser texturing to form the micro-anchoring layer (9); S3, welding functional sheets, namely respectively placing aluminum-silicon alloy solder foils serving as composite intermediate layers on the surfaces to be welded on two sides of the aluminum row main body (1), respectively accurately aligning and covering the first metal functional sheet (2) and the second metal functional sheet (3) on the solder foils, S4, high-frequency induction brazing, namely heating the assembly by adopting a high-frequency induction heating mode under the protection of hydrogen, applying pressure at the same time, enabling the temperature to reach the range from above an aluminum-silicon alloy eutectic point to 620+/-10 ℃, and cooling after heat preservation to form a firm metallurgical bonding structure; s5, machining a connecting hole, and machining through holes (6) of a first metal functional sheet (2), an aluminum row main body (1) and a second metal functional sheet (3) which are penetrated on the assembly; And S6, post-processing, namely embossing the micro-tooth structure (55) or the convex structure (8) on the outer surfaces of the first metal functional sheet (2) and the second metal functional sheet (3), and cleaning the finished product.

Description

Aluminum row bolt connection structure and aluminum row processing method Technical Field The application relates to the field of power equipment, in particular to an aluminum row bolt connection structure and an aluminum row processing method. Background The aluminum bar is a plate-shaped or strip-shaped conductive material made of aluminum alloy, has good conductivity, higher mechanical strength and lower cost and weight compared with copper materials, and is widely applied to the industrial and civil fields requiring bearing large current, and the aluminum bar is used as a key conductive bus in power distribution cabinets, transformers of power systems, battery packs of new energy automobiles, industrial calcium carbide furnaces and other equipment to bear important functions of electric energy collection, distribution and transmission. In practical applications, the aluminum busbar is usually fixed to other conductors electrically and mechanically by bolting, and the reliability of the bolting is directly related to the safe and stable operation of the whole power system, and the ideal bolting should have low and stable contact resistance, strong mechanical connection strength, and capability of resisting environmental factors in long-term use. However, the problem of large contact resistance generally exists when the existing aluminum row is directly connected with a bolt, meanwhile, the texture of an aluminum material is softer, creep deformation is easy to occur under the action of long-term pretightening force of the bolt, the pretightening force is attenuated, connection is loose, and the risk of increasing the contact resistance, locally overheating and even causing fire is caused. Disclosure of Invention The application aims to solve the problem that the prior aluminum row is large in contact resistance when being directly connected by bolts in the prior art, meanwhile, the aluminum material is softer in texture, creep deformation is easy to occur under the action of long-term pretightening force of the bolts, pretightening force is attenuated, connection is loose, and further the problem that the contact resistance is increased, local overheating is even the risk of causing fire is caused. The application adopts the following technical scheme for realizing the purposes: The utility model provides an aluminum row bolt connection structure, includes the aluminum row main part, be fixed with first metal function piece in the aluminum row main part, the one side that first metal function piece was kept away from to the aluminum row main part is fixed with the second metal function piece, the thickness of second metal function piece is greater than first metal function piece, be provided with the bolt in the aluminum row main part, set up the through-hole that corresponds with the bolt in the aluminum row main part, be provided with toper locking subassembly in the through-hole in the aluminum row main part. Through adopting above-mentioned technical scheme, first metal function piece is 0.1mm thick pure nickel piece, and the second metal function piece is 0.2mm thick nickel-copper alloy piece, and the bimetal function piece of differentiation setting to realized one side and optimized the connection, the function separation of support is reinforceed to the one side, thereby optimized overall connection structure's mechanical reliability and electrical stability, toper locking assembly has provided initiative mechanical locking, forms dual creep-resistant guarantee with the function piece. Further, the conical locking assembly comprises a conical ring arranged on the aluminum row main body, the conical ring is located in a through hole in the aluminum row main body, a tooth-shaped structure is arranged on the outer surface of the conical ring, a conical block is fixed at the end of the bolt, and the inclined surface of the conical block is matched with the inner conical surface of the conical ring. Through adopting above-mentioned technical scheme, with the axial pulling force of bolt turn into the radial expansion force to the toper ring, let the bolt drive toper piece extrusion toper ring, turn into radial force with axial force to can be after the toper ring inflation, the profile of tooth structure of its external surface can deep into softer aluminium row main part and run through the pore wall, form powerful mechanical auto-lock, greatly resisted vibrations and creep-induced not hard up, guaranteed the long-term stability of pretightning force. Further, a plurality of circumferentially distributed locking blocks are arranged on the conical ring, penetrate through the conical ring and are movably connected with the conical ring. Through adopting above-mentioned technical scheme, the latch segment is when the toper ring receives the toper piece extrusion to take place radial expansion, can further imbed aluminium row main part through hole wall, has strengthened the joint strength between toper r