CN215770586U

CN215770586U - Foundation pit detection cable

Info

Publication number: CN215770586U
Application number: CN202121856204.7U
Authority: CN
Inventors: 徐磊; 江婷; 刘丽华; 王磊; 么顺巍; 刘立康; 孔宪红
Original assignee: Tianjin Wanbo Wire & Cable Co ltd
Current assignee: Tianjin Wanbo Wire & Cable Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-02-08
Anticipated expiration: 2031-08-10

Abstract

The utility model provides a foundation pit detection cable which comprises a cable core, wherein the cable core is formed by stranding two groups of insulated wire core pairs, a plurality of aramid ropes and polyester yarns; each group of insulated wire core pairs consists of two insulated wire cores and an aluminum-plastic composite film coated outside the two insulated wire cores, and each insulated wire core consists of a conductor and a polyethylene insulated layer coated outside the conductor; polyester yarns are arranged between the two groups of insulated wire core pairs, and a plurality of aramid ropes are uniformly distributed around the two groups of insulated wire cores; the cable core is coated with a tinned copper woven shielding layer, a non-woven fabric layer is coated outside the tinned copper woven shielding layer, a woven glass fiber inner sheath is coated outside the non-woven fabric layer, and a polyurethane sheath is coated outside the woven glass fiber inner sheath. The utility model has the excellent performances of heavy bearing, softness, bending resistance and abrasion resistance.

Description

Foundation pit detection cable

Technical Field

The utility model belongs to the technical field of cables, and particularly relates to a foundation pit detection cable.

Background

The foundation pit detection cable is used for connecting a sensor, various observation and analysis works are carried out on the geotechnical properties of the foundation pit, the displacement of a supporting structure and the change of the ambient environment conditions in the process of foundation pit excavation and underground engineering construction, the monitoring result is fed back to the monitoring equipment in time, the deformation and the development of a stable state which are caused after further construction are predicted, the degree of influence of construction on the ambient environment is judged according to prediction, the design and construction are guided, and the information construction is realized. The foundation pit detection cable needs to have strong bearing capacity, bending resistance and abrasion resistance, but the existing foundation pit detection cable is still insufficient in the aspects.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a foundation ditch exploration cable, the bearing is big, soft, resistant buckling, resistance to wears.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a foundation pit detection cable which comprises a cable core, wherein the cable core is formed by stranding two groups of insulated wire core pairs, a plurality of aramid ropes and polyester yarns; each group of the insulated wire core pairs consists of two insulated wire cores and an aluminum-plastic composite film coated outside the two insulated wire cores, and each insulated wire core consists of a conductor and a polyethylene insulating layer coated outside the conductor; the polyester yarns are arranged between the two groups of insulated wire core pairs, and a plurality of aramid ropes are uniformly distributed around the two groups of insulated wire core pairs; the outer cladding of cable core has tinned copper to weave the shielding layer, the outer cladding of tinned copper weave shielding layer has the non-woven fabrics layer, the outer cladding of non-woven fabrics layer has the establishment glass silk inner sheath, the outer cladding of establishment glass silk inner sheath has the polyurethane sheath.

Preferably, the conductor is a tin-plated copper conductor, the conductor twisting mode is small-pitch equidirectional twisting, and the pitch-diameter ratio is not more than 8.

Preferably, the number of the aramid ropes is four.

Preferably, the cabling mode of the cable core is small-pitch cabling, and the pitch ratio does not exceed 14.

The utility model has the following beneficial effects:

the foundation pit detection cable provided by the utility model has the excellent performances of heavy bearing, softness, bending resistance and abrasion resistance. The conductors are twisted in the same direction at a small pitch, and cabling is carried out at a small pitch, so that the flexibility of the cable is improved; the production mode that the meter wheel was crossed to the polyester yarn in the middle of adopting during the stranding, it is unanimous effectively to have guaranteed that 4 insulating core stranding tensions, when having avoided receiving and releasing the line repeatedly, the problem that an insulating core damaged earlier has improved the life of cable. The aramid fiber is used as a bearing part, so that the tensile resistance of the cable is ensured, the cable is light in weight and small in outer diameter; the function of tension cable has been realized simultaneously to the cable, possesses the softness and the resistant performance of buckling of tow chain cable simultaneously, under bearing 100kg condition, receive and releases the line repeatedly and test to 7000 times, and is trouble-free.

The aluminum-plastic composite film coated outside the insulated wire core plays a role in shielding, so that signal transmission is stable; the tin-plated copper braided shielding layer coated outside the cable core can improve the anti-electromagnetic interference capability and improve the transmission stability of electric signals; the non-woven fabric layer has the characteristics of high strength, good high temperature resistance, aging resistance, ultraviolet resistance, high elongation, good stability and air permeability, corrosion resistance, moth resistance, no toxicity, small thickness deviation and high tensile strength; the woven glass fiber inner sheath can enhance the mechanical strength of the cable and improve the bending resistance of the cable; the polyurethane sheath has high mechanical strength and oxidation stability, high flexibility and rebound resilience, and excellent oil resistance, solvent resistance, water resistance and fire resistance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present invention.

Fig. 1 is a schematic structural diagram of a foundation pit detection cable provided by an embodiment of the present invention.

Description of reference numerals:

1. aramid fiber ropes; 2. a conductor; 3. a polyethylene insulating layer; 4. a polyester yarn; 5. an aluminum-plastic composite film; 6. a tin-plated copper braided shielding layer; 7. a non-woven fabric layer; 8. weaving a glass fiber inner sheath; 9. a polyurethane sheath.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The embodiment provides a foundation pit detection cable, which comprises a cable core as shown in fig. 1, wherein the cable core is formed by twisting two groups of insulated wire core pairs, a plurality of aramid ropes 1 and a polyester yarn 4; each group of the insulated wire core pairs consists of two insulated wire cores and an aluminum-plastic composite film 5 coated outside the two insulated wire cores, and each insulated wire core consists of a conductor 2 and a polyethylene insulating layer 3 coated outside the conductor 2; the polyester yarn 4 is arranged between the two groups of insulated wire core pairs, and a plurality of aramid ropes 1 are uniformly distributed around the two groups of insulated wire core pairs; the cable comprises a cable core and is characterized in that a tinned copper braided shielding layer 6 is coated outside the cable core, a non-woven fabric layer 7 is coated outside the tinned copper braided shielding layer 6, a braided glass fiber inner sheath 8 is coated outside the non-woven fabric layer 7, and a polyurethane sheath 9 is coated outside the braided glass fiber inner sheath 8.

The conductor 2 is a tinned copper conductor, the conductor 2 is twisted in a small pitch equidirectional twisting mode, the pitch diameter ratio is not more than 8, and the flexibility of the cable is improved. The cabling mode of the cable core is small-pitch cabling, the pitch ratio is not more than 14, and the flexibility of the cable is also improved. The aramid fiber ropes are four in number, aramid fibers are used as bearing parts, tensile resistance of the cable is guaranteed, the weight of the cable is light, and the outer diameter of the cable is small. The production mode that middle polyester yarn 4 crossed meter wheel is adopted during cabling, so that the cabling tension of 4 insulated wire cores is effectively ensured to be consistent, the problem that one insulated wire core is damaged firstly when wires are repeatedly wound and unwound is avoided, and the service life of the cable is prolonged.

According to the technical scheme, the foundation pit detection cable provided by the embodiment has the excellent performances of heavy bearing, softness, bending resistance and abrasion resistance. The conductors are twisted in the same direction at a small pitch, and cabling is carried out at a small pitch, so that the flexibility of the cable is improved; the production mode that the meter wheel was crossed to the polyester yarn in the middle of adopting during the stranding, it is unanimous effectively to have guaranteed that 4 insulating core stranding tensions, when having avoided receiving and releasing the line repeatedly, the problem that an insulating core damaged earlier has improved the life of cable. The aramid fiber is used as a bearing part, so that the tensile resistance of the cable is ensured, the cable is light in weight and small in outer diameter; the function of tension cable has been realized simultaneously to the cable, possesses the softness and the resistant performance of buckling of tow chain cable simultaneously, under bearing 100kg condition, receive and releases the line repeatedly and test to 7000 times, and is trouble-free. The aluminum-plastic composite film coated outside the insulated wire core plays a role in shielding, so that signal transmission is stable; the tin-plated copper braided shielding layer coated outside the cable core can improve the anti-electromagnetic interference capability and improve the transmission stability of electric signals; the non-woven fabric layer has the characteristics of high strength, good high temperature resistance, aging resistance, ultraviolet resistance, high elongation, good stability and air permeability, corrosion resistance, moth resistance, no toxicity, small thickness deviation and high tensile strength; the woven glass fiber inner sheath can enhance the mechanical strength of the cable and improve the bending resistance of the cable; the polyurethane sheath has high mechanical strength and oxidation stability, high flexibility and rebound resilience, and excellent oil resistance, solvent resistance, water resistance and fire resistance.

The embodiments of the present invention have been described in detail through the embodiments, but the description is only exemplary of the embodiments of the present invention and should not be construed as limiting the scope of the embodiments of the present invention. The scope of protection of the embodiments of the utility model is defined by the claims. In the present invention, the technical solutions described in the embodiments of the present invention or those skilled in the art, based on the teachings of the embodiments of the present invention, design similar technical solutions to achieve the above technical effects within the spirit and the protection scope of the embodiments of the present invention, or equivalent changes and modifications made to the application scope, etc., should still fall within the protection scope covered by the patent of the embodiments of the present invention.

Claims

1. A foundation pit detection cable comprises a cable core, and is characterized in that the cable core is formed by twisting two groups of insulated wire core pairs, a plurality of aramid ropes and polyester yarns; each group of the insulated wire core pairs consists of two insulated wire cores and an aluminum-plastic composite film coated outside the two insulated wire cores, and each insulated wire core consists of a conductor and a polyethylene insulating layer coated outside the conductor; the polyester yarns are arranged between the two groups of insulated wire core pairs, and a plurality of aramid ropes are uniformly distributed around the two groups of insulated wire core pairs; the outer cladding of cable core has tinned copper to weave the shielding layer, the outer cladding of tinned copper weave shielding layer has the non-woven fabrics layer, the outer cladding of non-woven fabrics layer has the establishment glass silk inner sheath, the outer cladding of establishment glass silk inner sheath has the polyurethane sheath.

2. The foundation pit detection cable according to claim 1, wherein the conductor is a tin-plated copper conductor, the conductor is twisted in a small pitch same direction, and the pitch diameter ratio is not more than 8.

3. The foundation pit detection cable of claim 1, wherein the number of aramid ropes is four.

4. The foundation pit detection cable of claim 1, wherein the cabling mode of the cable core is small pitch cabling, and the pitch ratio does not exceed 14.