Compression-resistant and bending-resistant load cell detection cable

Abstract

The utility model belongs to the field of weighing cables, and particularly relates to a compression-resistant and bending-resistant load cell detection cable, which comprises a cable core, a shielding layer and an outer protective layer. Wherein the cable core comprises an inner conductor and an insulating layer, and the insulating layer is extruded outside the inner conductor; a shielding layer is wrapped outside the cable core, and an outer protective layer is wrapped outside the shielding layer; the pressure-resistant and bending-resistant load cell detection cable provided by the utility model can meet the use requirements in the fields of industrial production, building civil engineering, precision electronics, transportation logistics, agricultural machinery, medical equipment and the like, and has the characteristics of good transmission precision, interference resistance, bending property, strong locking extrusion resistance and chemical resistance, long service life and the like.

Description

Technical Field

[0001] The utility model belongs to the field of weighing cables, and particularly relates to a compression-resistant and bend-resistant load cell detection cable. Background Art

[0002] With the high-performance development requirements of equipment and instruments in the fields of industrial production, construction civil engineering, precision electronics, transportation logistics, agricultural machinery, medical equipment, etc., and the further improvement of requirements for detection accuracy, transmission reliability, installation life, etc., it is required that the cables supporting them must meet the control requirements of high precision, high reliability, and long life.

[0003] At present in this field, ordinary detection cables cannot meet the requirements of high transmission accuracy, strong anti-interference ability, adaptation to high-strength connector locking installation, high bendability, extremely small bending radius, long service life, etc. Summary of the Invention

[0004] In order to solve the above technical problems, the utility model provides a compression-resistant and bend-resistant load cell detection cable that can meet the use requirements in the fields of industrial production, construction civil engineering, precision electronics, transportation logistics, agricultural machinery, medical equipment, etc., and has characteristics such as good transmission accuracy, anti-interference ability, bendability, strong anti-locking extrusion and chemical resistance, and long service life.

[0005] A compression-resistant and bend-resistant load cell detection cable includes a cable core, a shielding layer, and an outer sheath; wherein, the cable core includes an inner conductor and an insulating layer, and the insulating layer is extruded and wrapped outside the inner conductor; the cable core is wrapped with a shielding layer, and the shielding layer is wrapped with an outer sheath.

[0006] Further, the inner conductor adopts a tinned copper wire specification of a single AWG wire gauge, and is formed by double-layer or multi-layer regular stranding, and the diameter of a single wire does not exceed 0.15 mm.

[0007] Further, the insulating layer adopts a double-layer co-extrusion thin-wall extrusion process of high-electrical-property polyvinyl chloride + high-strength polyvinyl chloride.

[0008] Further, the high-electrical-property polyvinyl chloride layer is 0.1 mm.

[0009] Further, the high-strength polyvinyl chloride layer is 0.12 mm.

[0010] Further, the shielding layer includes a polyester aluminum / plastic composite film and a tinned copper wire braided layer; the tinned copper wire braided layer is wrapped outside the polyester aluminum / plastic composite film.

[0011] Further, the outer sheath adopts a high-strength flame-retardant polyurethane material.

[0012] Advantageous Technical Effects of the Utility Model

[0013] 1. The inner conductor is made of tinned copper wire with a single AWG gauge, which is formed by double-layer or multi-layer regular stranding. Considering the bending performance, the diameter of the single wire does not exceed 0.15 mm, enhancing the cable's transmission accuracy, bending fatigue resistance, and oxidation resistance, thus ensuring the reliable transmission and usage requirements of the system.

[0014] 2. The insulation layer adopts a double-layer co-extrusion thin-wall extrusion process of high-electrical PVC + high-strength PVC. Extruding a 0.1 mm high-electrical PVC layer outside the conductor can ensure the performance requirement of an insulation resistance as high as 10 GΩ·m. Outside the high-electrical PVC layer, a 0.12 mm high-strength PVC is extruded, which has a high tensile strength and elongation at break, and can improve the physical compressive capacity of the insulated core wire. Using double-layer PVC material, the layers can be effectively bonded to each other, are not easily separated during processing and installation, and have high flexible bending performance.

[0015] 3. The shielding layer is composed of a polyester aluminum / plastic composite film material with 100% coverage + a tinned copper wire braid layer with an AWG gauge specification of 95% coverage. The polyester aluminum / plastic composite film is wound around the cable core with 100% overlap, effectively blocking the interference of the outside world on signal transmission and improving the shielding efficiency to 90%. The tinned copper wire braid layer increases the coverage rate from the traditional 75% to 88%. It can not only prevent the interference of external signals but also improve the compressive capacity of the cable, closely cooperate with high-strength connectors and waterproof lock nuts to ensure airtightness, and at the same time resist the continuous extrusion force on the cable inside after the installation of the connectors and waterproof lock nuts, ensuring the transmission reliability of the internal core wire.

[0016] 4. The outer sheath adopts a high-strength flame-retardant polyurethane material, and the flame retardant uses a liquid flame retardant, which not only meets the flame-retardant requirements of the system but also can maximize the retention of the original physical strength of the polyurethane. The tensile strength can reach more than 40 MPa. Compared with the 15 MPa of traditional PVC or the 28 MPa of traditional phosphorus-nitrogen flame-retardant polyurethane materials, it has higher physical strength, compressive capacity, and resilience performance, further improving the connection reliability with high-strength connectors and waterproof lock nuts. At the same time, it also has excellent oil resistance, acid and alkali resistance, bending resistance, etc., and can effectively extend the service life of the cable. Description of the Drawings

[0017] Figure 1 This is the main view of the sectional structure of the present utility model;

[0018] In the figure: 1. Inner conductor; 2. Insulation layer; 3. Polyester aluminum / plastic composite film; 4. Tinned copper wire braid layer; 5. Outer sheath. Detailed Embodiment

[0019] The following will combine the drawings and preferred embodiments to detail the specific embodiments, structures, features, and their effects provided according to the present utility model as follows.

[0020] A cable for detecting a compression-resistant and bend-resistant load element, comprising a cable core, a shielding layer and an outer sheath 6; wherein, the cable core includes an inner conductor 1 and an insulating layer 2, and the insulating layer 2 is extruded and wrapped outside the inner conductor 1; the cable core is wrapped with a shielding layer, and the shielding layer is wrapped with an outer sheath 6.

[0021] Further, the inner conductor 1 is made of tinned copper wire with a single AWG gauge, and is formed by double-layer or multi-layer regular stranding, and the diameter of the single wire does not exceed 0.15 mm.

[0022] Further, the insulating layer 2 adopts a double-layer co-extrusion thin-wall extrusion process of high-voltage polyvinyl chloride + high-strength polyvinyl chloride.

[0023] Further, the high-voltage polyvinyl chloride layer is 0.1 mm.

[0024] Further, the high-strength polyvinyl chloride layer is 0.12 mm.

[0025] Further, the shielding layer includes a polyester aluminum / plastic composite film 3 and a tinned copper wire braided layer 4; the tinned copper wire braided layer 4 is wrapped outside the polyester aluminum / plastic composite film 3.

[0026] Further, the outer sheath 6 adopts a high-strength flame-retardant polyurethane material.

[0027] The beneficial technical effects of the present utility model are as follows:

[0028] 1. The inner conductor is made of tinned copper wire with a single AWG gauge, and is formed by double-layer or multi-layer regular stranding. Considering the bending performance, the diameter of the single wire does not exceed 0.15 mm, which enhances the transmission accuracy, bend fatigue resistance and oxidation resistance of the cable, thus ensuring the reliable transmission and use requirements of the system.

[0029] 2. The insulating layer adopts a double-layer co-extrusion thin-wall extrusion process of high-voltage polyvinyl chloride + high-strength polyvinyl chloride. Extruding a 0.1 mm high-voltage polyvinyl chloride layer outside the conductor can ensure the performance requirement of an insulation resistance as high as 10 GΩ·m. Outside the high-voltage polyvinyl chloride layer, extruding a 0.12 mm high-strength polyvinyl chloride has a relatively high tensile strength and elongation at break, which can improve the physical compression resistance of the insulated core wire. Using double-layer polyvinyl chloride materials, the layers can be effectively bonded to each other, and are not easily separated during processing and installation, and have relatively high flexible bending performance.

[0030] 3. The shielding layer is composed of a polyester aluminum / plastic composite film material with 100% coverage rate + a tinned copper wire braided layer with a coverage rate of 95% AWG wire gauge specification. The polyester aluminum / plastic composite film is overlapped and wound around the cable core with 100% coverage, which can well block the interference of the outside world on signal transmission and effectively improve the shielding efficiency to 90%. The tinned copper wire braided layer increases the coverage rate from the traditional 75% to 88%. It can not only prevent the interference of external signals, but also improve the compressive resistance of the cable, closely cooperate with high-strength connectors and waterproof lock nuts to ensure airtightness, and at the same time resist the continuous extrusion force on the inside of the cable after the installation of the connectors and waterproof lock nuts, ensuring the transmission reliability of the internal core wires.

[0031] 4. The outer sheath uses a high-strength flame-retardant polyurethane material, and the flame retardant uses a liquid flame retardant, which not only meets the flame-retardant requirements of the system, but also can retain the original physical strength of the polyurethane to the greatest extent. The tensile strength can reach more than 40 MPa. Compared with the 15 MPa of traditional polyvinyl chloride or the 28 MPa of traditional phosphorus-nitrogen flame-retardant polyurethane materials, it has higher physical strength, compressive resistance and resilience performance, further improving the connection reliability with high-strength connectors and waterproof lock nuts. At the same time, it also has excellent characteristics such as oil resistance, acid and alkali resistance, and bending resistance, which can effectively extend the service life of the cable.

[0032] The above has described in detail an embodiment of the present invention, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention shall fall within the scope covered by the patent of the present invention.

Claims

1. A cable for detecting a compression-resistant and bend-resistant load element, characterized in that: It includes a cable core, a shielding layer and an outer sheath; wherein, the cable core includes an inner conductor and an insulating layer, and the insulating layer is extruded and wrapped around the outer side of the inner conductor; the cable core is wrapped with a shielding layer, and the shielding layer is wrapped with an outer sheath.

2. The anti-pressure and bend-resistant load element detection cable according to claim 1, wherein: The inner conductor is made of tinned copper wire with a single AWG gauge, and is formed by double-layer or multi-layer regular stranding. The diameter of the single AWG gauge tinned copper wire does not exceed 0.15 mm.

3. A cable for detecting a compression-resistant and bend-resistant load element according to claim 1, characterized in that: The insulating layer adopts a double-layer co-extrusion thin-wall extrusion process of high electrical property polyvinyl chloride + high-strength polyvinyl chloride.

4. A compression-resistant and bend-resistant load element detection cable according to claim 3, characterized in that: The high electrical property polyvinyl chloride layer is 0.1 mm.

5. A compression-resistant and bend-resistant load element detection cable according to claim 3, characterized in that: The high-strength polyvinyl chloride layer is 0.12 mm.

6. A cable for detecting a compressive and bend-resistant load element according to claim 1, characterized in that: The shielding layer includes a polyester aluminum / plastic composite film and a tinned copper wire braided layer; the tinned copper wire braided layer is wrapped around the outside of the polyester aluminum / plastic composite film.

7. A compressive and bend-resistant load element detection cable according to claim 1, characterized in that: The outer sheath adopts a high-strength flame-retardant polyurethane material.

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