CN105790034B - A kind of application method of electrical lead construction steel-cored aluminium strand crimping system - Google Patents

Abstract

The invention discloses a crimping system for steel-cored aluminum stranded wires for power conductor construction, which comprises a wire core clamping block, a left jacket and a right jacket hinged with one end thereof, and the wire core clamping block includes a left clamping block and a right clamping block block, the left clamping block and the right clamping block are matched with the card slots provided in the left jacket and the right jacket, and the locking bolts are arranged in the card slots, and the inner arc of the left clamping block and the right clamping block is combined The diameter size matches the specification of the wire core, the left jacket and the right jacket are both provided with operating rods, and the operating rods are connected by a latch mechanism arranged on the operating rods. The use of the above device saves time and effort. When the ACSR is more than 20mm, the tension will be relatively large after the wires are scattered. Just press the operating lever to lock the operating lever in a suitable position, move to the loose end, and operate Time-saving and labor-saving, convenient and fast, high operating efficiency.

Description

A method of using a steel-cored aluminum stranded wire crimping system for power conductor construction

technical field

The invention relates to the field of auxiliary tools for crimping wires in power substation engineering construction, in particular to a method for using a steel-cored aluminum stranded wire crimping system for power wire construction.

Background technique

At present, during the construction and wiring of power substation projects, it is necessary to make copper or aluminum joints at both ends of wires with various wire diameters. Special crimping pliers are used for small diameter wires, which is more convenient to make and can meet the quality requirements of joints; Diameter wires are generally used in high-current occasions. When there is a poor contact, it will cause the contact to heat up. In severe cases, the contact will be melted and the wire will be blown. Through observation, it is found that the following problems exist in the production process:

1) Since the wire is multi-core, its ends are easy to disperse, and it is difficult to insert it neatly into the sleeve of the crimping tube. After crimping the sleeve, the outer layer of the end of the wire cannot be in reliable contact with the inner wall of the crimping tube, and there is poor contact When the wire is crimped, heating is unavoidable; the current crimping process is: wire binding, scribing and mold crimping. Before the wire is crimped, the wire is bound with aluminum wire, which is troublesome and consumes more wire.

2) When crimping short wires, especially those with a length of less than one meter, when one end is crimped and the other end is crimped, the wire core at the end of the wire will be under the action of the pressing force. Some loose wires are prone to so-called "lantern flowers". Under the action of the "skin effect" of the current, the loose wires will overheat and burn out in severe cases, but there is currently no effective way to avoid it.

CN201110415510.1 discloses an auxiliary device for crimping aluminum-steel wire, which is characterized in that it includes a jacket and a wire core die, the jacket includes an upper jacket and a lower jacket, and the arc-shaped upper jacket and One side of the lower jacket is hinged and opposite, the other side of the upper jacket and the lower jacket are respectively provided with a lip parallel to the axial direction, the middle part of the lip is missing, and the head of the swing bolt is set on the lip of the upper jacket or the lower jacket On the pin shaft at the edge defect, a wing nut is provided on the screw rod of the swing bolt, and positioning pins are respectively provided on the inner arc surfaces of the upper jacket and the lower jacket; the core die includes an upper die and a lower die. Die, after the combination of the upper die and the lower die, the diameter of the inner arc matches the specification of the wire core. A positioning groove is arranged at the positioning pin. Its disadvantages are: 1) The range of application is small, and it can only crimp a single ACSR. When encountering ACSR with various diameters, it is necessary to carry multiple above-mentioned devices, which is inconvenient to use . 2) It is time-consuming and labor-intensive to use the above-mentioned device. When the steel-reinforced aluminum stranded wire is more than 20mm, the tension will be relatively large after the wires are loosened. It is time-consuming and labor-intensive to crimp with the wing nut, which is inconvenient to operate and low in efficiency. 3) When the above-mentioned device is used to crimp aluminum-steel conductors with a thickness of more than 10mm, the device will be pressed against the rear side of the insertion part of the wire end, and the end will remain loose, making it difficult to insert the end into the crimping tube. 4) It is necessary to press the upper die and the lower die by hand to snap the aluminum core into the device, which takes time and effort and is inconvenient to use.

Contents of the invention

The purpose of the present invention is to provide a method for using a steel-cored aluminum stranded wire crimping system for power conductor construction, which overcomes the deficiencies of the prior art, and can make the ends of the conductors be neatly pressed into a bundle, which is convenient for insertion and avoids pressing When the local wire core is loose due to uneven force, the special filling sleeve is used, and the pressing sheet can be evenly filled in the gaps of the aluminum stranded wire, which greatly improves the electrical conductivity, and is resistant to corrosion and oxidation, and also improves the performance of large wires. diameter wire crimping quality.

In order to solve the above-mentioned technical problems, the technical solution of the present invention is: a method for using a steel-reinforced aluminum stranded wire crimping system for power conductor construction. The crimping system includes a core clamp block, a left jacket, and a right Jacket, the core clamping block includes a left clamping block and a right clamping block, the left clamping block and right clamping block are matched with the card slots provided in the left jacket and the right jacket, and the card slots are set The locking bolt, the inner arc diameter size of the left clamp block and the right clamp block are combined to match the wire core specification, the left jacket and the right jacket are equipped with operating rods, and the operating rods are arranged on the operating rods The bayonet mechanism connection.

There are at least two core clamping blocks, and the inner arc diameters of the core clamping blocks are different.

The operating rod is made of elastic material.

The above system also includes a dedicated filling sleeve.

The inner and outer surfaces of the sleeve are uniformly provided with several circular protrusions.

The special filling sleeve includes raw materials in the following proportions by weight: P: 0.06-0.08%, S: 0.005-0.08%, Cu: 6-8%, Ag: 0.00004-0.00009%, Sn: 10-20%, V: 0.2~0.5%, the rest is aluminum.

The use method of the aluminum steel-cored wire crimping system for power conductor construction of the present invention can make the ends of the conductors be neatly pressed into a bundle, which is convenient for insertion and connection, and can also prevent local cores from loosening due to uneven force during pressing; There are at least two wire core clamps, and the diameters of the inner arcs of the core clamps are different, so that the system can be used in a wide range; use a special filling sleeve, the sleeve is a soft high temperature and corrosion resistant superconducting alloy, the inner surface of the sleeve There are several circular protrusions evenly arranged on the outer surface. The thickness of the sleeve is 0.1mm~1mm. The height of the circular protrusions is equal to the depth of the gap between the aluminum strands. The convex slides into the gap of the aluminum strand, and under the action of external force, the sleeve can be evenly filled in the gap of the aluminum strand, so that the aluminum strand and the sleeve are in 100% complete contact, forming the largest contact surface, greatly The electrical conductivity is improved, and the sleeve has corrosion resistance, high temperature resistance, oxidation resistance, long service life, and also improves the crimping quality of large-diameter wires.

Tin in the sleeve of the present invention: the chemical property of tin is very stable, it is used to improve the corrosion resistance and plasticity of the alloy, and it is not easy to be oxidized by oxygen at normal temperature. Silver in the sleeve: Silver is stable in nature, is a corrosion-resistant element, not easily corroded by acid and alkali, soft and ductile, improves the ductility of the sleeve, and has high conductivity. The main function is to improve the uniform corrosion resistance of the joint , which forms a dense oxide film on the surface to isolate the substrate from the corrosive environment, thereby inhibiting the progress of corrosion. Vanadium in the sleeve: It has a strong effect of refining grains, which can improve the toughness of the sleeve and improve thermal stability. Vanadium is stable below 250°C in the air and has good plasticity and malleability. It is used to improve the sleeve plasticity. Relatively stable to dilute sulfuric acid, dilute hydrochloric acid and dilute phosphoric acid.

The method of using the above-mentioned system includes the following steps:

1) Put the special filling sleeve into the crimping tube, and the outer diameter of the sleeve matches the inner diameter of the crimping tube.

2) Select the core clamp block that matches the inner diameter of the wire, snap the core clamp block into the slot, and tighten the locking bolt.

3) Hold the system at the place where the wires are not scattered, adjust the locking teeth, and move the system to the loose end, the operation is labor-saving, and there is no need to clamp the loose ends of the wires with hands or other utensils.

4) When the system moves to 0.5~1cm from the loose end of the wire, clamp the system firmly, and insert the loose end of the wire into the sleeve in the crimping tube.

5) Loosen the system properly, move the system outward 2~3cm, clamp the system firmly, and insert the loose end of the wire into the sleeve in the crimping tube.

6) Loosen the system properly again, move the system outward, clamp the system firmly, and insert the loose end of the wire into the bottom of the sleeve in the crimping tube.

When the present invention is in use, the special filling sleeve is put into the crimping tube, and the outer diameter of the sleeve matches the inner diameter of the crimping tube. Select the core clamp block that matches the inner diameter of the wire, snap the core clamp block into the slot, and tighten the locking bolt. Clamp the system at the place where the wires are not scattered, adjust the locking teeth, and move the system to the loose end, the operation is labor-saving, and there is no need to clamp the loose ends of the wires with hands or other utensils. When the system moves to 0.5~1cm from the loose end of the wire, clamp the system firmly, and insert the loose end of the wire into the sleeve in the crimping tube. Properly loosen the system, move the system outward 2~3cm, clamp the system firmly, and insert the loose end of the wire into the sleeve in the crimping tube. Loosen the system properly again, move the system outward, clamp the system firmly, and insert the loose end of the wire into the bottom of the sleeve inside the crimp tube. The tool of the present invention has a wide application range and can only crimp aluminum steel cored wires of various diameters. When encountering aluminum steel cored wires of various diameters, only the clamping block needs to be replaced, which is inconvenient and quick to use. Using the above-mentioned system saves time and labor. When the ACSR is more than 20mm, the tension will be relatively high after the wires are scattered. Just press the operating lever to lock the operating lever in a suitable position, move to the loose end, and operate Time-saving and labor-saving, convenient and fast, high operating efficiency. At the same time, there is no need to press the clamp block by hand, which saves time and labor and has high work efficiency. And it fundamentally overcomes the problem of poor contact of steel wire and aluminum stranded wire. Under the premise of ensuring good contact, it can also ensure that the connection is not corroded and has good thermal stability.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing:

Fig. 1 is the front view structure schematic diagram of the present invention;

Fig. 2 is a schematic cross-sectional structural diagram of A-A direction in Fig. 1;

Fig. 3 is a structural schematic diagram of the latching mechanism of the present invention;

Fig. 4 is a schematic structural view of a special sleeve of the present invention;

Fig. 5 is a schematic diagram of the longitudinal section of the special sleeve of the present invention.

Detailed ways

Embodiment 1: As shown in Figures 1, 2, 3, 4, and 5, a method for using a steel-cored aluminum stranded wire crimping system for power conductor construction. The crimping system includes a core clamp block, a left jacket 1 and a With the right clamping sleeve 5 hinged at one end, the core clamping block includes a left clamping block 3 and a right clamping block 9, and the left clamping block 3 and the right clamping block 9 are connected with the inside of the left clamping sleeve 1 and the right clamping sleeve 5. The set card slot 4 is matched, and the lock bolt 2 is arranged in the card slot 4. After the combination of the left clamp block 3 and the right clamp block 9, the inner arc diameter size matches the wire core specification, and the left jacket 1 and the right clamp Each of the jackets 5 is provided with an operating rod 6 , and the operating rods 6 are connected by a latch mechanism 7 provided on the operating rod 6 .

There are at least two core clamping blocks, and the inner arc diameters of the core clamping blocks are different.

The operating rod 6 is made of elastic material.

The aforementioned system also includes a dedicated filling sleeve 10 .

Several circular protrusions 11 are uniformly arranged on the inner surface and the outer surface of the sleeve.

The special filling sleeve includes raw materials in the following proportions by weight: P: 0.06-0.08%, S: 0.005-0.08%, Cu: 6-8%, Ag: 0.00004-0.00009%, Sn: 10-20%, V: 0.2~0.5%, the rest is aluminum.

The steel-cored aluminum stranded wire crimping system for power conductor construction of the present invention can make the ends of the conductors be neatly pressed into a bundle, which is convenient for plugging in, and can avoid local wire cores from loosening due to uneven force during pressing, and special filling sleeves are used. The sleeve is made of a soft high temperature and corrosion resistant superconducting alloy. The inner and outer surfaces of the sleeve are evenly provided with several round protrusions. The thickness of the sleeve is 0.1mm~1mm. The depth of the gap is the same. When the sleeve squeezes the sleeve under the action of external force, the small round convex slides into the gap of the aluminum strand. Under the action of the external force, the sleeve can be evenly filled in the gap of the aluminum strand. 100% complete contact between the aluminum stranded wire and the casing to form the largest contact surface, which greatly improves the electrical conductivity. At the same time, the sleeve has corrosion resistance, high temperature resistance, oxidation resistance, long service life, and also improves the performance of large-diameter wires. Crimp quality.

Tin in the sleeve of the present invention: the chemical property of tin is very stable, it is used to improve the corrosion resistance and plasticity of the alloy, and it is not easy to be oxidized by oxygen at normal temperature. Silver in the sleeve: Silver is stable in nature, is a corrosion-resistant element, not easily corroded by acid and alkali, soft and ductile, improves the ductility of the sleeve, and has high conductivity. The main function is to improve the uniform corrosion resistance of the joint , which forms a dense oxide film on the surface to isolate the substrate from the corrosive environment, thereby inhibiting the progress of corrosion. Vanadium in the sleeve: It has a strong effect of refining grains, which can improve the toughness of the sleeve and improve thermal stability. Vanadium is stable below 250°C in the air and has good plasticity and malleability. It is used to improve the sleeve plasticity. Relatively stable to dilute sulfuric acid, dilute hydrochloric acid and dilute phosphoric acid.

The method of using the above-mentioned system includes the following steps:

1) Put the special filling sleeve into the crimping tube, and the outer diameter of the sleeve matches the inner diameter of the crimping tube.

2) Select the core clamp block that matches the inner diameter of the wire, snap the core clamp block into the slot, and tighten the locking bolt.

3) Hold the system at the place where the wires are not scattered, adjust the locking teeth, and move the system to the loose end, the operation is labor-saving, and there is no need to clamp the loose ends of the wires with hands or other utensils.

4) When the system moves to 0.5~1cm from the loose end of the wire, clamp the system firmly, and insert the loose end of the wire into the sleeve in the crimping tube.

5) Loosen the system properly, move the system outward 2~3cm, clamp the system firmly, and insert the loose end of the wire into the sleeve in the crimping tube.

6) Loosen the system properly again, move the system outward, clamp the system firmly, and insert the loose end of the wire into the bottom of the sleeve in the crimping tube.

When the present invention is in use, the special filling sleeve is put into the crimping tube, the thickness of the sleeve is 0.1mm~1mm, the height of the round convex is equal to the gap depth of the aluminum strand, and the outer diameter of the sleeve matches the inner diameter of the crimping tube. Select the core clamp block that matches the inner diameter of the wire, snap the core clamp block into the slot, and tighten the locking bolt. Clamp the system at the place where the wires are not scattered, adjust the locking teeth, and move the system to the loose end, the operation is labor-saving, and there is no need to clamp the loose ends of the wires with hands or other utensils. When the system moves to 0.5~1cm from the loose end of the wire, clamp the system firmly, and insert the loose end of the wire into the sleeve in the crimping tube. Properly loosen the system, move the system outward 2~3cm, clamp the system firmly, and insert the loose end of the wire into the sleeve in the crimping tube. Loosen the system properly again, move the system outward, clamp the system firmly, and insert the loose end of the wire into the bottom of the sleeve inside the crimp tube. The tool of the present invention has a wide application range and can only crimp aluminum steel cored wires of various diameters. When encountering aluminum steel cored wires of various diameters, only the clamping block needs to be replaced, which is inconvenient and quick to use. Using the above-mentioned system saves time and labor. When the ACSR is more than 20mm, the tension will be relatively high after the wires are scattered. Just press the operating lever to lock the operating lever in a suitable position, move to the loose end, and operate Time-saving and labor-saving, convenient and fast, high operating efficiency. At the same time, there is no need to press the clamp block by hand, which saves time and labor and has high work efficiency. And it fundamentally overcomes the problem of poor contact of steel wire and aluminum stranded wire. Under the premise of ensuring good contact, it can also ensure that the connection is not corroded and has good thermal stability.

Claims (2)

1. a kind of application method of electrical lead construction steel-cored aluminium strand crimping system, it is characterised in that：The crimping system includes Core fixture block, left chuck and the right chuck hinged with left chuck one end, the core fixture block include left fixture block and right fixture block, institute State and be both provided with card slot in left chuck and right chuck, the left fixture block matches with the card slot in left chuck, the right fixture block with Card slot in right chuck matches, and clamping screw, its interior arc dia ruler after left fixture block and right fixture block combine are arranged in the card slot It is very little to be matched with core specification, it is both provided with operating lever on the left chuck and right chuck, is being operated by setting between operating lever Latch mechanism connection on bar, further includes special filling sleeve, which includes the following steps：

1）Special filling sleeve is put into aluminium hydraulic pressed connecting pipe, sleeve outer diameter is matched with bore is crimped；

2）Core fixture block is caught in card slot, tightens clamping screw by the core fixture block that selection matches with conducting wire internal diameter；

3）System card is not scattered place in conducting wire, adjusts latch, by system to end movement of scattering, rapid operation need not use hand Or other utensils clamping conducting wire scatters end；

4）It scatters at 0.5 ~ 1cm of end when system is moved to conducting wire, firmly clamping system, conducting wire end of scattering is inserted into aluminium hydraulic pressed connecting pipe Sleeve；

5）System is displaced outwardly 2 ~ 3cm, firmly clamping system by appropriate release system, and conducting wire is scattered in end insertion aluminium hydraulic pressed connecting pipe Sleeve；

6）Appropriate release system again, system is displaced outwardly, firmly clamping system, and conducting wire is scattered in end insertion aluminium hydraulic pressed connecting pipe Sleeve bottom；

The special filling sleeve includes the raw material of following weight：P：0.06~0.08%、S：0.005~0.08%、Cu：6~ 8%、Ag：0.00004~0.00009%、Sn：10~20%、V：0.2 ~ 0.5%, remaining is aluminium；The inner surface of the special filling sleeve It is evenly arranged with several boss with outer surface.

2. the application method of electrical lead construction steel-cored aluminium strand crimping system as described in claim 1, it is characterised in that：Institute It states operating lever and uses elastic material product.