Alloy cable of electric crank arm vehicle

Abstract

The utility model discloses an alloy cable of an electric crank arm vehicle, which comprises a sheath and a non-woven fabric layer, and the sheath is positioned on the outer side of the non-woven fabric layer. The cable also comprises eight first core wires, and the eight first core wires form a circle. The cable further comprises two second core wires, and the two second core wires are located in the first core wire and installed side by side. According to the utility model, the superfine composite stranded silver-copper alloy conductor is adopted, so that the bending resistance and torsion resistance are far better than those of a conventional pure copper conductor, and the service life of the device is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to an alloy cable for an electric articulated boom truck. Background Art

[0002] This product is used for electric articulated boom trucks, which bend and twist with the machine. Due to limited wiring space, it is bent about 6 times and needs to meet the approximate movement requirement of 200,000 times to meet the normal service life of the equipment. Conventional cables may break after hundreds to thousands of times, affecting the use of the equipment. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides the following technical solutions: an electric articulated boom alloy cable, comprising a sheath and a non-woven fabric layer, the sheath being located outside the non-woven fabric layer; also comprising eight first core wires, the eight first core wires forming a circle; also comprising two second core wires, the two second core wires being located inside the first core wire, and the two second core wires being installed side by side.

[0004] Preferably, eight outer filling layers are included, the cross-section of the outer filling layer is an arc triangle, and each of the outer filling layers is located in the gap between every two of the first core wires and the non-woven fabric layer.

[0005] Preferably, the device comprises a first polyester belt and a second polyester belt, wherein the first polyester belt is located between the first core wire and the second core wire, and the second polyester belt is located between the first polyester belt and the second core wire.

[0006] Preferably, it comprises a braided layer, wherein the braided layer is located between the first polyester belt and the second polyester belt.

[0007] Preferably, two inner fillings are included, and each outer filling is located in a gap between two of the second core wires and the second polyester tape.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0009] 1.Using ultra-fine composite stranded silver-copper alloy conductor, it has much better bending and torsion resistance than conventional pure copper conductor.

[0010] 2. Adopt 80% high-density weaving to shield external interference. Even if the braiding is deformed at the bend during movement, it can maintain a certain density to meet the anti-interference requirements. The inside and outside of the weaving are wrapped with high-strength PET material to prevent the broken wires from piercing the core wire insulation during movement.

[0011] 3. The insulation is made of PP material, and the small and stable dielectric constant ensures stable signal transmission of the twisted structure. The high tensile strength and elongation can protect the conductor during bending of the product, and the smooth surface can reduce friction between the core wires during torsional movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the cross-sectional structure of an embodiment of the utility model.

[0013] Figure 2 This is a schematic diagram of the braided layer structure of an embodiment of the utility model.

[0014] Figure 3 This is a schematic diagram of the outer filling structure of an embodiment of the utility model.

[0015] In the figure, 1. sheath, 2. non-woven fabric layer, 3. first core wire, 4. outer filling, 5. first polyester tape, 6. braided layer, 7. second polyester tape, 8. second core wire, 9. inner filling. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] like Figure 1-3 An alloy cable for an electric boom truck comprises a sheath 1 and a non-woven fabric layer 2, wherein the sheath 1 is located outside the non-woven fabric layer 2; the cable also comprises eight first core wires 3, which are arranged in a circle; the cable also comprises two second core wires 8, which are located inside the first core wires 3 and are installed side by side; the conductor adopts a Class 6 silver-copper alloy conductor, which ensures resistance while greatly improving the bending resistance; the cable is made of a small pitch back-twisting method to improve the anti-interference effect of the twisted pair group, while improving the softness of the wire and releasing the torsion of the twisted pair of wires; the cable is made of a small pitch back-twisting method to improve the softness of the product and improve the requirements for mobility; the modified special PVC material is adopted, which has wear resistance that is not inferior to that of the TPU material, but is softer and reduces the force on the wire during bending.

[0018] like Figure 1-3 , including eight outer fillings 4, the cross-section of the outer filling 4 is an arc triangle, and each outer filling 4 is located in the gap between every two first core wires 3 and the non-woven fabric layer 2; the arc triangle has both the stability of a triangle and the buffering effect of an arc, which plays a role in supporting and reducing deformation.

[0019] like Figure 1-3, including a first polyester tape 5 and a second polyester tape 7, the first polyester tape 5 is located between the first core wire 3 and the second core wire 8, and the second polyester tape 7 is located between the first polyester tape 5 and the second core wire 8; polypropylene insulation is adopted, and the excellent tensile bending performance of polypropylene can effectively protect the conductor in bending operation, and at the same time, the material surface is smooth, which can reduce the friction between the core wires during the torsion of the cable.

[0020] like Figure 1-3 , including a braided layer 6, which is located between the first polyester belt 5 and the second polyester belt 7; it adopts 80% high-density weaving to shield external interference. Even if the braiding is deformed at the bending part during movement, it can maintain a certain density to meet the anti-interference requirements. The inside and outside of the weaving are wrapped with high-strength PET material to prevent the broken wires from piercing the core wire insulation during movement.

[0021] like Figure 1-3 , including two internal fillings 9, each outer filling 4 is located in the gap between the two second core wires 8 and the second polyester tape 7; the inner and outer fillings cooperate with each other to play a supporting and pressure-resistant role, thereby increasing the bending resistance of the cable.

[0022] Through the process control and material selection of the above processes, the wire can meet more than 200,000 bending and twisting movements at 6 times the bending radius.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An alloy cable for an electric articulated boom truck, characterized in that: The invention comprises a sheath (1) and a non-woven fabric layer (2), wherein the sheath (1) is located outside the non-woven fabric layer (2); further comprises eight first core wires (3), wherein the eight first core wires (3) form a circle; and further comprises two second core wires (8), wherein the two second core wires (8) are located inside the first core wires (3), and the two second core wires (8) are installed side by side.

2. The alloy cable for electric articulated boom truck according to claim 1, characterized in that: It comprises eight outer filling layers (4), the cross section of the outer filling layer (4) being an arc triangle, and each of the outer filling layers (4) being located in the gap between every two of the first core threads (3) and the non-woven fabric layer (2).

3. The alloy cable for electric articulated boom truck according to claim 2, characterized in that: The invention comprises a first polyester belt (5) and a second polyester belt (7), wherein the first polyester belt (5) is located between the first core wire (3) and the second core wire (8), and the second polyester belt (7) is located between the first polyester belt (5) and the second core wire (8).

4. The alloy cable for electric articulated boom truck according to claim 3, characterized in that: It comprises a braided layer (6), wherein the braided layer (6) is located between the first polyester belt (5) and the second polyester belt (7).

5. The alloy cable for electric articulated boom truck according to claim 4, characterized in that: It comprises two inner fillings (9), and each outer filling (4) is located in the gap between two of the second core wires (8) and the second polyester belt (7).

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