CN110380308A - A kind of 19 embedding aluminium strain clamp compression bonding methods of strand steel strand wires - Google Patents

A kind of 19 embedding aluminium strain clamp compression bonding methods of strand steel strand wires Download PDF

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Publication number
CN110380308A
CN110380308A CN201910732545.4A CN201910732545A CN110380308A CN 110380308 A CN110380308 A CN 110380308A CN 201910732545 A CN201910732545 A CN 201910732545A CN 110380308 A CN110380308 A CN 110380308A
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China
Prior art keywords
steel
unit
aluminum pipe
anchor
embedding
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CN201910732545.4A
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Chinese (zh)
Inventor
张仁奇
张义钊
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Guizhou Power Grid Co Ltd
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Guizhou Power Grid Co Ltd
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Priority to CN201910732545.4A priority Critical patent/CN110380308A/en
Publication of CN110380308A publication Critical patent/CN110380308A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The invention discloses a kind of 19 embedding aluminium strain clamp compression bonding methods of strand steel strand wires, and the method comprising the steps of: 1) embedding aluminum pipe being embedded into steel anchor aluminium hydraulic pressed connecting pipe；2) steel strand wires are inserted into from embedding aluminum pipe one end, and steel strand wires is inserted into wire clamp anchor ring bottom；3) steel anchor aluminium hydraulic pressed connecting pipe is crimped using crimp, so that embedding aluminum pipe tightly engages gap between steel strand surface and filling steel anchor and steel strand wires and forms steel strand wires tension resisting connector.Increase by one layer of embedding aluminum pipe between 19 strand steel strand wires of steel anchor aluminium hydraulic pressed connecting pipe and round wires concentric gallows empty conductor of the present invention, high moulding and high confficient of static friction using embedding aluminum pipe, avoid occurring in steel anchor aluminium hydraulic pressed connecting pipe and the crimping of 19 strand steel strand wires 19 strand steel strand wires and strain clamp weighed wounded, be under-voltage, loose stock phenomenon, meet connector again simultaneously holds force request, 19 strand steel strand wires docking crimping are made to be easier to implement, crimp quality is higher, crimp head can lower labor intensity and engineering cost in order to avoid non-destructive testing.

Description

A kind of 19 embedding aluminium strain clamp compression bonding methods of strand steel strand wires
Technical field
The invention belongs to 19 embedding aluminium strain clamp crimp technology fields of strand steel strand wires, and in particular to a kind of 19 strand steel strand The embedding aluminium strain clamp compression bonding method of line.
Background technique
In the subsequent process of traditional project of transmitting and converting electricity aerial condutor strain clamp, the galvanized strand wires of steel strand wires (or Aluminum-cladding stranded wire) connector directly entangles steel strand wires hydraulic connecting with steel anchor, if steel anchor is mismatched with steel strand wires hardness, is crimped The defects of die size is unreasonable, crimping pressure is insufficient, is easy to appear under-voltage, loose stock, over-voltage, steel wire surface damage, causes to connect The power that holds of head is unsatisfactory for standard requirements.In the steel strand wires crimping defect factors for causing steel strand wires, steel anchor and steel strand wires hardness Mismatch is least avoided that, in the production technology of aluminum-cladding stranded wire, (cold-)drawn (steel)wire passes through liquid aluminium and aluminizes, and has mutually regarded one Secondary tempering, (cold-)drawn (steel)wire hardness reduce, and cause steel strand wires hardness lower than steel anchor hardness, and steel anchor inner wall bites steel strand wires steel when crimping Silk, lead to connector holds power reduction.
Summary of the invention
It, can be with technical problem solved by the present invention is provide a kind of 19 embedding aluminium strain clamp compression bonding methods of strand steel strand wires Solve above-mentioned the technical problems existing in the prior art.
The technical scheme adopted by the invention is as follows: a kind of 19 embedding aluminium strain clamp compression bonding methods of strand steel strand wires, this method packet Include following steps:
1) embedding aluminum pipe is embedded into steel anchor aluminium hydraulic pressed connecting pipe；
2) steel strand wires are inserted into from embedding aluminum pipe one end, and steel strand wires is inserted into wire clamp anchor ring bottom；
3) using crimp crimp steel anchor aluminium hydraulic pressed connecting pipe so that embedding aluminum pipe tightly engage steel strand surface and filling steel anchor and Gap forms steel strand wires tension resisting connector between steel strand wires；
Embedding aluminum pipe thickness and length:
Aluminium amount s after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe between embedding aluminum pipe insertion steel strand wires:
In formula (8), r---- steel core twisted wire steel wire radius, unit mm；
It is embedded in the aluminum pipe thickness needed
In formula (9), r---- steel core twisted wire steel wire radius, unit mm；
Then embedding aluminum pipe is with a thickness of δal, unit mm:
δal=δq+1 (10)
(3) embedding aluminum pipe outer diameter DalFor
Dal=10r+1+2 δal (11)
In formula (11), r---- steel core twisted wire steel wire radius, unit mm；
Embedding aluminum pipe (2) length is a steel core twisted wire pitch (1 steel core twisted wire pitch be steel core diameter 18 times).
Stress is crimped after the crimping steel anchor aluminium hydraulic pressed connecting pipe of crimp: the press machine non-stopping time after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe, Steel anchor aluminium hydraulic pressed connecting pipe inside radius is rfe, steel anchor aluminium hydraulic pressed connecting pipe center thickness is dfe, the steel core twisted wire pitch diameter of thread is d2, aluminum pipe central diameter thickness For dal, the steel anchor trade mark is Q345；
According to the relationship of material trus stress σ and true strain ε
σ=E ε (1)
In formula (1), E---- is the Young's modulus of material；
After press machine shutdown is removed after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe, if aluminum pipe wall compression chord is σ1, steel anchor aluminium hydraulic pressed connecting pipe Inside radius is rfe+Δrfe, steel anchor aluminium hydraulic pressed connecting pipe center thickness is dfe+Δdfe, steel core twisted wire pitch diameter of thread radius of circle is R+ Δ R, aluminium Pipe central diameter is with a thickness of dal+Δdal
After press pressure releases after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe, each thickness increment relationship is
ΔrfeΔ R=Δ dal (5)
After then press pressure releases after steel anchor aluminium hydraulic pressed connecting pipe crimping molding, steel core, embedding aluminum pipe, the pressure between steel anchor aluminium hydraulic pressed connecting pipe Stress are as follows:
In formula (7):
σ1After press pressure releases after the crimping molding of ----steel anchor,
Steel core, embedding aluminum pipe, the compression between steel anchor, unit pa；
σ --- before press pressure releases after the crimping molding of-steel anchor,
Steel core, embedding aluminum pipe, the compression between steel anchor, unit pa；
rfeInside radius after the crimping of ----steel anchor, unit mm；
R---- steel core twisted wire pitch diameter of thread d2Half, unit mm；
dal----embedding aluminum pipe equivalent thickness, unit mm；
EfeThe Young's modulus of ----steel；
EalThe Young's modulus of ----aluminium alloy.
Steel anchor aluminium hydraulic pressed connecting pipe uses the trade mark for Q345 high-strength steel, and steel anchor crimps tube thickness δfeFor
In formula (12)
Fb----conducting wire (or ground wire) calculates Fracture Force, unit N；
σsfe----steel anchor yield strength, unit Mpa；
DalThe embedding aluminum pipe outer diameter of ----steel core, unit mm；
Then steel anchor crimping pipe outside diameter is
Dfe=Dal+2δfe (13)
It is identical as embedding aluminum pipe length that steel anchor crimps length of tube.
Crimp crimps area of section are as follows:
Steel core crimps sectional area sx
In formula (14), r---- steel core twisted wire steel wire radius, unit mm；
Embedding aluminum pipe section sqFor
In formula (15),
R---- steel core twisted wire steel wire radius, unit mm；
DalThe embedding aluminum pipe outer diameter of ----steel core, unit mm；
Steel anchor aluminium hydraulic pressed connecting pipe sectional area sgFor
In formula (24), Dsl=Dal+1
Dfe----steel anchor outer diameter, unit mm；
Dsl----steel anchor internal diameter, unit mm；
DalThe embedding aluminum pipe outer diameter of ----steel core, unit mm；
Crimp crimps area of section syFor
sy=sx+sq+sg (17)
Regular hexagon pressing mold side length α is
Regular hexagon pressing mold diagonal line b is
B=a+2acos60 °=2a (19).
Safe working temperature range after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe:
If environment temperature is t when splicing sleeve is installed0, the linear expansion coefficient of steel core and steel anchor aluminium hydraulic pressed connecting pipe is afe, embedding aluminum pipe line The coefficient of expansion is aal, when running temperature is t1When
Steel core radial expansion amount
ΔRt=Rafe(t1-t0) (20)
Embedding aluminum pipe swell increment
Δdalt=dalaal(t1-t0) (21)
Steel anchor crimps bore swell increment
Δrfet=rfeafe(t1-t0) (22)
Safe working temperature
When temperature increases:
I.e. splicing sleeve running temperature incrementss should meet
In formula (31)
σ1After press pressure releases after the crimping molding of steel anchor, steel core, embedding aluminum pipe, the compression between steel anchor, unit pa；
Before press pressure releases after σ-steel anchor crimping molding, steel core, embedding aluminum pipe, the compression unit pa between steel anchor；
rfeInside radius after the crimping of ----steel anchor, unit mm；
R---- steel core steel strand wires pitch diameter of thread d2Half, unit mm；
dal----embedding aluminum pipe equivalent thickness, unit mm；
EfeThe Young's modulus of ----steel, unit mm；
EalThe Young's modulus of ----aluminium alloy, unit mm；
afeThe linear expansion coefficient of ----steel；
aalThe linear expansion coefficient of ----aluminium；
When temperature reduces:
That is steel anchor aluminium hydraulic pressed connecting pipe running temperature reduction amount should meet
In formula (26)
Fb----conducting wire or ground line computation Fracture Force, unit pa；
σ1After the crimping molding of ----steel anchor after press pressure Xie Chu, steel core, embedding aluminum pipe, the compression between steel anchor are single Position pa；
σ --- before press pressure releases after the crimping molding of-steel anchor, steel core, embedding aluminum pipe, the compression between steel anchor, unit pa；
rfeInside radius after the crimping of ----steel anchor, unit mm；
R---- steel core steel strand wires pitch diameter of thread d2Half, unit mm；
dal----embedding aluminum pipe equivalent thickness, unit mm；
EfeThe Young's modulus of ----steel, unit Gpa；
EalThe Young's modulus of ----aluminium alloy, unit GPa；
R---- steel core twisted wire steel wire radius, unit mm；
afeThe linear expansion coefficient of ----steel；
aalThe linear expansion coefficient of ----aluminium.
Beneficial effects of the present invention: compared with prior art, steel anchor aluminium hydraulic pressed connecting pipe and round wires concentric gallows empty conductor of the present invention Increase by one layer of aluminium-alloy pipe between 19 strand steel strand wires, high moulding and high confficient of static friction using aluminium-alloy pipe are avoided in steel There are 19 strand steel of round wires concentric gallows empty conductor when the 19 strand steel strand wires crimping of anchor aluminium hydraulic pressed connecting pipe and round wires concentric gallows empty conductor Twisted wire weighed wounded, is under-voltage, loose stock phenomenon, while meet connector again holds force request, makes round wires concentric gallows empty conductor 19 It twists steel strand wires docking crimping to be easier to implement, crimp quality is higher, and crimp head can lower labor intensity and work in order to avoid non-destructive testing Journey expense.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is non-crimping structure schematic diagram of the invention；
Fig. 3 is crimping structure schematic diagram of the invention；
Fig. 4 is cross section structure schematic diagram at crimping of the invention.
Specific embodiment
With reference to the accompanying drawing and the present invention is described further in specific embodiment.
Embodiment 1: as shown in Figure 1-Figure 3, a kind of 19 embedding aluminium strain clamp crimping structures of strand steel strand wires, including steel anchor pressure Adapter tube 1 and embedding aluminum pipe 2, embedding aluminum pipe 2 are embedded into steel anchor aluminium hydraulic pressed connecting pipe 1, and wrap up penetrate connection strain clamp end round wires it is concentric 19 strand steel strand wires 3 of gallows empty conductor, crimping steel anchor aluminium hydraulic pressed connecting pipe 1 make embedding aluminum pipe 2 fit closely round wires concentric gallows empty conductor 19 strand steel strand wires 3 form steel strand wires tension resisting connector.
Embedding 2 length of aluminum pipe is a steel core twisted wire pitch.
Novel 19 embedding aluminium strain clamp aluminium hydraulic pressed connecting pipes of strand steel strand wires of round wires concentric gallows empty conductor, it is by outer layer steel anchor pressure Adapter tube and the embedding aluminum pipe of internal layer are constituted, and see Fig. 1.Outer layer steel anchor aluminium hydraulic pressed connecting pipe provides 19 strand steel strand wires pair of round wires concentric gallows empty conductor Main tension stress and tap pressure are connect, embedding aluminum pipe provides steel wire and is embedded in packing material, sees Fig. 1, rubs using the height of aluminium alloy is quiet It wipes coefficient and tap pressure is changed into tension stress, that improves connector holds power.
Since the embedding aluminum pipe hardness of internal layer is low, 19 strand steel strand wires of round wires concentric gallows empty conductor will not be weighed wounded, as long as mold It is matched with aluminium hydraulic pressed connecting pipe, crimp head is not in under-voltage, loose stock phenomenon, can not have to carry out non-destructive testing crimp head.
Embodiment 2: a kind of 19 embedding aluminium strain clamp compression bonding methods of strand steel strand wires, method includes the following steps:
1) embedding aluminum pipe is embedded into steel anchor aluminium hydraulic pressed connecting pipe；
2) steel strand wires are inserted into from embedding aluminum pipe one end, and steel strand wires is inserted into wire clamp anchor ring bottom；
3) using crimp crimp steel anchor aluminium hydraulic pressed connecting pipe so that embedding aluminum pipe tightly engage steel strand surface and filling steel anchor and Gap forms steel strand wires tension resisting connector between steel strand wires.
Stress is crimped after the crimping steel anchor aluminium hydraulic pressed connecting pipe of crimp: the press machine non-stopping time after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe, Steel anchor aluminium hydraulic pressed connecting pipe inside radius is rfe, steel anchor aluminium hydraulic pressed connecting pipe center thickness is dfe, the steel core twisted wire pitch diameter of thread is d2, aluminum pipe central diameter thickness For dal, the steel anchor trade mark is Q345；
According to the relationship of material trus stress σ and true strain ε
σ=E ε (1)
In formula (1), E---- is the Young's modulus of material；
After press machine shutdown is removed after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe, if aluminum pipe wall compression chord is σ1, steel anchor aluminium hydraulic pressed connecting pipe Inside radius is rfe+Δrfe, steel anchor aluminium hydraulic pressed connecting pipe center thickness is dfe+Δdfe, steel core twisted wire pitch diameter of thread radius of circle is R+ Δ R, aluminium Pipe central diameter is with a thickness of dal+Δdal
After press pressure releases after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe, each thickness increment relationship is
ΔrfeΔ R=Δ dal (5)
After then press pressure releases after steel anchor aluminium hydraulic pressed connecting pipe crimping molding, steel core, embedding aluminum pipe, the pressure between steel anchor aluminium hydraulic pressed connecting pipe Stress are as follows:
In formula (7):
σ1After press pressure releases after the crimping molding of ----steel anchor,
Steel core, embedding aluminum pipe, the compression between steel anchor, unit pa；
σ --- before press pressure releases after the crimping molding of-steel anchor,
Steel core, embedding aluminum pipe, the compression between steel anchor, unit pa；
rfeInside radius after the crimping of ----steel anchor, unit mm；
R---- steel core twisted wire pitch diameter of thread d2Half, unit mm；
dal----embedding aluminum pipe equivalent thickness, unit mm；
EfeThe Young's modulus of ----steel；
EalThe Young's modulus of ----aluminium alloy.
Embedding aluminum pipe thickness and length:
Aluminium amount s after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe between embedding aluminum pipe insertion steel strand wires:
In formula (8), r---- steel core twisted wire steel wire radius, unit mm；
It is embedded in the aluminum pipe thickness needed
In formula (9), r---- steel core twisted wire steel wire radius, unit mm；
Then embedding aluminum pipe is with a thickness of δal, unit mm:
δal=δq+1 (10)
(3) embedding aluminum pipe outer diameter DalFor
Dal=10r+1+2 δal (11)
In formula (11), r---- steel core twisted wire steel wire radius, unit mm；
Embedding aluminum pipe length is a steel core twisted wire pitch.
Steel anchor aluminium hydraulic pressed connecting pipe uses the trade mark for Q345 high-strength steel, and steel anchor crimps tube thickness δfeFor
In formula (12)
Fb----conducting wire (or ground wire) calculates Fracture Force, unit N；
σsfe----steel anchor yield strength, unit Mpa；
DalThe embedding aluminum pipe outer diameter of ----steel core, unit mm；
Then steel anchor crimping pipe outside diameter is
Dfe=Dal+2δfe (13)
It is identical as embedding aluminum pipe length that steel anchor crimps length of tube.
Crimp crimps area of section are as follows:
Steel core crimps sectional area sx
In formula (14), r---- steel core twisted wire steel wire radius, unit mm；
Embedding aluminum pipe section sqFor
In formula (15),
R---- steel core twisted wire steel wire radius, unit mm；
DalThe embedding aluminum pipe outer diameter of ----steel core, unit mm；
Steel anchor aluminium hydraulic pressed connecting pipe sectional area sgFor
In formula (24), Dsl=Dal+1
Dfe----steel anchor outer diameter, unit mm；
Dsl----steel anchor internal diameter, unit mm；
DalThe embedding aluminum pipe outer diameter of ----steel core, unit mm；
Crimp crimps area of section syFor
sy=sx+sq+sg (17)
Regular hexagon pressing mold side length α is
Regular hexagon pressing mold diagonal line b is
B=a+2acos60 °=2a (19).
Safe working temperature range after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe:
If environment temperature is t when splicing sleeve is installed0, the linear expansion coefficient of steel core and steel anchor aluminium hydraulic pressed connecting pipe is afe, embedding aluminum pipe line The coefficient of expansion is aal, when running temperature is t1When
Steel core radial expansion amount
ΔRt=Rafe(t1-t0) (20)
Embedding aluminum pipe swell increment
Δdalt=dalaal(t1-t0) (21)
Steel anchor crimps bore swell increment
Δrfet=rfeafe(t1-t0) (22)
Safe working temperature
When temperature increases:
I.e. splicing sleeve running temperature incrementss should meet
In formula (31)
σ1After press pressure releases after the crimping molding of steel anchor, steel core, embedding aluminum pipe, the compression between steel anchor, unit pa；
Before press pressure releases after σ-steel anchor crimping molding, steel core, embedding aluminum pipe, the compression unit pa between steel anchor；
rfeInside radius after the crimping of ----steel anchor, unit mm；
R---- steel core steel strand wires pitch diameter of thread d2Half, unit mm；
dal----embedding aluminum pipe equivalent thickness, unit mm；
EfeThe Young's modulus of ----steel, unit mm；
EalThe Young's modulus of ----aluminium alloy, unit mm；
afeThe linear expansion coefficient of ----steel；
aalThe linear expansion coefficient of ----aluminium；
When temperature reduces:
That is steel anchor aluminium hydraulic pressed connecting pipe running temperature reduction amount should meet
In formula (26)
Fb----conducting wire (or ground wire) calculates Fracture Force, unit pa；
σ1After the crimping molding of ----steel anchor after press pressure Xie Chu, steel core, embedding aluminum pipe, the compression between steel anchor are single Position pa；
σ --- before press pressure releases after the crimping molding of-steel anchor, steel core, embedding aluminum pipe, the compression between steel anchor, unit pa；
rfeInside radius after the crimping of ----steel anchor, unit mm；
R---- steel core steel strand wires pitch diameter of thread d2Half, unit mm；
dal----embedding aluminum pipe equivalent thickness, unit mm；
EfeThe Young's modulus of ----steel, Gpa；
EalThe Young's modulus of ----aluminium alloy, unit GPa；
R---- steel core twisted wire steel wire radius, unit mm；
afeThe linear expansion coefficient of ----steel；
aalThe linear expansion coefficient of ----aluminium.
Example calculation
Table 1, steel strand wires parameter
Table 2, embedding aluminum pipe parameter calculate
Table 3, steel anchor aluminium hydraulic pressed connecting pipe parameter calculate
Table 4, steel anchor pressing mold parameter calculate
Table 5, safe operating temperature calculate
Example that the above description is merely a specific embodiment, scope of protection of the present invention is not limited thereto.It is ripe It knows the those skilled in the art in the technical scope disclosed by the present invention, change or replacement mode can be easily found, these It should be covered by the protection scope of the present invention.For this purpose, protection scope of the present invention should be with the protection model of the claim Subject to enclosing.

Claims (5)

1. a kind of embedding aluminium strain clamp of 19 strand steel strand wires crimps compression bonding method, method includes the following steps:
1) embedding aluminum pipe is embedded into steel anchor aluminium hydraulic pressed connecting pipe；
2) steel strand wires are inserted into from embedding aluminum pipe one end, and steel strand wires is inserted into wire clamp anchor ring bottom；
3) steel anchor aluminium hydraulic pressed connecting pipe is crimped using crimp, so that embedding aluminum pipe tightly engages steel strand surface and filling steel anchor and steel twist Gap forms steel strand wires tension resisting connector between line；
Embedding aluminum pipe thickness and length:
Aluminium amount s after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe between embedding aluminum pipe insertion steel strand wires:
In formula (8), r---- steel core twisted wire steel wire radius, unit mm；
It is embedded in the aluminum pipe thickness needed
In formula (9), r---- steel core twisted wire steel wire radius, unit mm；
Then embedding aluminum pipe is with a thickness of δal, unit mm:
δal=δq+1 (10)
(3) embedding aluminum pipe outer diameter DalFor
Dal=10r+1+2 δal (11)
In formula (11), r---- steel core twisted wire steel wire radius, unit mm；
Embedding aluminum pipe (2) length is a steel core twisted wire pitch.
2. a kind of embedding aluminium strain clamp compression bonding method of 19 strands steel strand wires according to claim 1, it is characterised in that: crimping Stress is crimped after the crimping steel anchor aluminium hydraulic pressed connecting pipe of mold: the press machine non-stopping time after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe, in steel anchor aluminium hydraulic pressed connecting pipe Radius is rfe, steel anchor aluminium hydraulic pressed connecting pipe center thickness is dfe, the steel core twisted wire pitch diameter of thread is d2, aluminum pipe central diameter is with a thickness of dal；
According to the relationship of material trus stress σ and true strain ε
σ=E ε (1)
In formula (1), E---- is the Young's modulus of material；
After press machine shutdown is removed after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe, if aluminum pipe wall compression chord is σ1, steel anchor aluminium hydraulic pressed connecting pipe inside radius For rfe+Δrfe, steel anchor aluminium hydraulic pressed connecting pipe center thickness is dfe+Δdfe, steel core twisted wire pitch diameter of thread radius of circle is R+ Δ R, aluminum pipe central diameter With a thickness of dal+Δdal
After press pressure releases after the crimping molding of steel anchor aluminium hydraulic pressed connecting pipe, each thickness increment relationship is
ΔrfeΔ R=Δ dal (5)
After then press pressure releases after steel anchor aluminium hydraulic pressed connecting pipe crimping molding, steel core, embedding aluminum pipe, the compression between steel anchor aluminium hydraulic pressed connecting pipe Are as follows:
In formula (7):
σ1After press pressure releases after the crimping molding of ----steel anchor,
Steel core, embedding aluminum pipe, the compression between steel anchor, unit pa；
σ --- before press pressure releases after the crimping molding of-steel anchor,
Steel core, embedding aluminum pipe, the compression between steel anchor, unit pa；
rfeInside radius after the crimping of ----steel anchor, unit mm；
R---- steel core twisted wire pitch diameter of thread d2Half, unit mm；
dal----embedding aluminum pipe equivalent thickness, unit mm；
EfeThe Young's modulus of ----steel；
EalThe Young's modulus of ----aluminium alloy.
3. a kind of embedding aluminium strain clamp compression bonding method of 19 strands steel strand wires according to claim 1, it is characterised in that: steel anchor Crimp tube thickness δfeFor
In formula (12)
Fb----conducting wire (or ground wire) calculates Fracture Force, unit N；
σsfe----steel anchor yield strength, unit Mpa；
DalThe embedding aluminum pipe outer diameter of ----steel core, unit mm；
Then steel anchor crimping pipe outside diameter is
Dfe=Dal+2δfe (13)
It is identical as embedding aluminum pipe length that steel anchor crimps length of tube.
4. a kind of embedding aluminium strain clamp compression bonding method of 19 strands steel strand wires according to claim 1, it is characterised in that: crimping Mold crimps area of section are as follows:
Steel core crimps sectional area sx
In formula (14), r---- steel core twisted wire steel wire radius, unit mm；
Embedding aluminum pipe section sqFor
In formula (15),
R---- steel core twisted wire steel wire radius, unit mm；
DalThe embedding aluminum pipe outer diameter of ----steel core, unit mm；
Steel anchor aluminium hydraulic pressed connecting pipe sectional area sgFor
In formula (24), Dsl=Dal+1
Dfe----steel anchor outer diameter, unit mm；
Dsl----steel anchor internal diameter, unit mm；
DalThe embedding aluminum pipe outer diameter of ----steel core, unit mm；
Crimp crimps area of section syFor
sy=sx+sq+sg (17)
Regular hexagon pressing mold side length α is
Regular hexagon pressing mold diagonal line b is
B=a+2acos60 °=2a (19).
5. a kind of embedding aluminium strain clamp compression bonding method of 19 strands steel strand wires according to claim 1, it is characterised in that: steel anchor Safe working temperature range after aluminium hydraulic pressed connecting pipe crimping molding:
If environment temperature is t when splicing sleeve is installed0, the linear expansion coefficient of steel core and steel anchor aluminium hydraulic pressed connecting pipe is afe, embedding aluminium line expansion Coefficient is aal, when running temperature is t1When
Steel core radial expansion amount
ΔRt=Rafe(t1-t0) (20)
Embedding aluminum pipe swell increment
Δdalt=dalaal(t1-t0) (21)
Steel anchor crimps bore swell increment
Δrfet=rfeafe(t1-t0) (22)
Safe working temperature
When temperature increases:
I.e. splicing sleeve running temperature incrementss should meet
In formula (31)
σ1After press pressure releases after the crimping molding of ----steel anchor, steel core, embedding aluminum pipe, the compression between steel anchor, unit pa；
σ --- before press pressure releases after the crimping molding of-steel anchor, steel core, embedding aluminum pipe, the compression unit pa between steel anchor；
rfeInside radius after the crimping of ----steel anchor, unit mm；
The half of R---- steel core steel strand wires pitch diameter of thread d2, unit mm；
dal----embedding aluminum pipe equivalent thickness, unit mm；
EfeThe Young's modulus of ----steel, unit mm；
EalThe Young's modulus of ----aluminium alloy, unit mm；
afeThe linear expansion coefficient of ----steel；
aalThe linear expansion coefficient of ----aluminium；
When temperature reduces:
That is steel anchor aluminium hydraulic pressed connecting pipe running temperature reduction amount should meet
In formula (26)
Fb----traverse calculation Fracture Force, unit pa；
σ1After the crimping molding of ----steel anchor after press pressure Xie Chu, steel core, embedding aluminum pipe, the compression between steel anchor, unit pa；
σ --- before press pressure releases after the crimping molding of-steel anchor, steel core, embedding aluminum pipe, the compression between steel anchor, unit pa；
rfeInside radius after the crimping of ----steel anchor, unit mm；
R---- steel core steel strand wires pitch diameter of thread d2Half, unit mm；
dal----embedding aluminum pipe equivalent thickness, unit mm；
EfeThe Young's modulus of ----steel, unit GPa；
EalThe Young's modulus of ----aluminium alloy, unit GPa；
R---- steel core twisted wire steel wire radius, unit mm；
afeThe linear expansion coefficient of ----steel；
aalThe linear expansion coefficient of ----aluminium.
CN201910732545.4A 2019-08-09 2019-08-09 A kind of 19 embedding aluminium strain clamp compression bonding methods of strand steel strand wires Pending CN110380308A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116387921A (en) * 2023-04-13 2023-07-04 河北鸿宇通信器材有限公司 Method for processing steel strand joint for communication line

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Publication number Priority date Publication date Assignee Title
CN101719647A (en) * 2009-12-21 2010-06-02 中国电力科学研究院 Strain clamp for large-section lead
CN105470893A (en) * 2015-12-08 2016-04-06 中国电力科学研究院 Strain clamp
CN109616849A (en) * 2019-01-09 2019-04-12 贵州电网有限责任公司 A kind of 19 embedding aluminium compression bonding methods of strand steel strand wires docking of aerial condutor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101719647A (en) * 2009-12-21 2010-06-02 中国电力科学研究院 Strain clamp for large-section lead
CN105470893A (en) * 2015-12-08 2016-04-06 中国电力科学研究院 Strain clamp
CN109616849A (en) * 2019-01-09 2019-04-12 贵州电网有限责任公司 A kind of 19 embedding aluminium compression bonding methods of strand steel strand wires docking of aerial condutor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116387921A (en) * 2023-04-13 2023-07-04 河北鸿宇通信器材有限公司 Method for processing steel strand joint for communication line
CN116387921B (en) * 2023-04-13 2023-10-24 河北鸿宇通信器材有限公司 Method for processing steel strand joint for communication line

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