CN210378563U

CN210378563U - Highway weighing and monitoring sensor cable

Info

Publication number: CN210378563U
Application number: CN202020319490.2U
Authority: CN
Inventors: 任玉宝; 李金花; 周秀; 李健; 李玉龙; 刘伟
Original assignee: Tianjin Hengteer Wire & Cable Co ltd
Current assignee: Tianjin Hengteer Wire & Cable Co ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-04-21
Anticipated expiration: 2030-03-16

Abstract

The utility model belongs to the technical field of the sensor cable, especially, relate to a highway is weighed, is monitored sensor cable, the sheath includes inner sheath and oversheath, insulation core comprises inner conductor and cladding irradiation polyethylene insulating layer outside it, the filler that non-hygroscopicity material constitutes is filled up in the cable space, the utility model provides a main technical problem that prior art exists because lay in the ground for a long time that the cable humidity load is great to lead to the problem that the fail safe nature that the cable used descends, have avoided under humidity, high-pressure environment, the damaged and insulation resistance of insulating layer technical problem that descends gradually, guaranteed the beneficial technological effect of the fail safe nature that the cable used.

Description

Highway weighing and monitoring sensor cable

Technical Field

The utility model belongs to the technical field of the sensor cable, especially, relate to a highway is weighed, monitoring sensor cable.

Background

Along with the development of the expressway in China, people pay more and more attention to the safety supervision and control of vehicle loads on the expressway. In order to ensure the safety of highway driving and reduce the probability of occurrence of violation phenomena such as overspeed and overload, the vehicle type and the like are automatically identified according to a preset vehicle type classification table, and meanwhile, traffic information such as weight, speed, lane flow and the like is uploaded to a supervision center of a road section to ensure that the vehicle load of a highway is in a safe range, the cable matched with the conventional high-speed dynamic weighing system is a common sensor cable, and the following defects generally exist during use: firstly because the cable need lay in the ground for a long time, and often have the oversize vehicle to pass through from it, consequently increased the load of cable, lead to its insulating layer damaged because of long-term pressurized, cause insulation resistance to descend, and reduced the fail safe nature of cable use, secondly the sheath of current cable is mostly the single-layer sheath, consequently the waterproof nature of cable is relatively poor, inside the water molecule easy infiltration cable in the ground, cause cable damage and insulation resistance to descend, the main technical problem that prior art exists is because lay for a long time in the ground that the cable is great because of moist load, thereby lead to the problem that the fail safe nature of cable use descends.

SUMMERY OF THE UTILITY MODEL

The utility model provides a highway is weighed, monitoring sensor cable to the main technical problem who has proposed prior art existence among the solution above-mentioned background art is owing to lay for a long time in the ground cable great because of the moist load, thereby leads to the problem that the fail safe nature of cable usage descends.

The utility model provides a technical problem adopt following technical scheme to realize: the utility model provides a highway is weighed, monitoring sensor cable, includes the insulating core group of being formed by the transposition of insulating core, insulating core group surface parcel shielding layer, shielding layer surface parcel sheath, the sheath includes inner sheath and oversheath, insulating core comprises inner conductor and the irradiation polyethylene insulating layer of cladding outside it, the filler that non-hygroscopicity material constitutes is filled up in the cable space.

Furthermore, the insulated wire core group is formed by twisting 4-20 insulated wire cores.

Furthermore, the shielding layer comprises a polyester aluminum plastic composite film and a tinned copper ground wire.

Furthermore, the tinned copper ground wire is uniformly wound in the gap at the outer edge of the insulated wire core group.

Further, the inner sheath and the outer sheath are respectively a polyethylene inner sheath and a polyurethane outer sheath.

Furthermore, a power line with an insulated wire core is arranged in the cable.

Further, a polyester film is arranged between the shielding layer and the inner sheath.

The beneficial technical effects are as follows:

1. the utility model adopts the outer surface of the insulated wire core group is wrapped with the shielding layer, the outer surface of the shielding layer is wrapped with the sheath, the sheath comprises an inner sheath and an outer sheath, the insulated wire core is composed of an inner conductor and an irradiation polyethylene insulating layer wrapped outside the inner conductor, the cable gap is filled with a filler composed of non-hygroscopic materials, the highway weighing and monitoring sensor cable is composed of the insulated wire core, the filling, the shielding layer and the sheath, the insulated wire core is twisted to form the insulated wire core group, the shielding layer and the sheath are sequentially wrapped outside the insulated wire core group, the cable is laid underground for a long time due to the filling composed of the non-hygroscopic materials, the filling can well fill the cable gap, so that the insulated wire core of the cable is not damaged when the cable bears the load, the sheath is composed of the polyethylene inner sheath and the polyurethane outer sheath which are sequentially and coaxially wrapped outside the shielding layer, and the insulating layer of the, the temperature resistance level of the cable is improved, so that the cable has the characteristics of good moisture resistance, high mechanical strength and the like, the technical problems that an insulating layer is damaged and the insulation resistance is gradually reduced when the cable is laid in a humid and high-voltage environment for a long time are solved, and the safety and reliability of the use of the cable are ensured.

2. This patent adopts the filler that non-hygroscopicity material constitutes is filled up in the cable space, because the filling of non-hygroscopicity material guarantees the circularity of cable, avoids the cable to bear the emergence of ground pressure and damage insulating layer phenomenon because lay in the underground for a long time, has greatly improved the insulating nature and the security of cable.

3. The utility model adopts the shielding layer comprises a polyester aluminum-plastic composite film and a tinned copper ground wire, the tinned copper ground wire is uniformly wound in the outer edge gap of the insulated wire core group, because each pair of shielding layers comprises the polyester aluminum-plastic composite film and the tinned copper ground wire, the structure can ensure the good grounding property of the cable, the shielding effect is enhanced, the shielding layers comprise the polyester aluminum-plastic composite film and a tinned copper wire, the tinned copper ground wire is uniformly wound in the outer edge gap of the insulated wire core group, because each pair of shielding layers adopts the structure of the polyester aluminum-plastic composite film inner auxiliary tinned copper ground wire, the tinned copper wire is uniformly wound in the outer edge gap of the insulated wire core group, the phenomenon that the cable damages the insulating layer due to bearing the ground pressure when being laid underground for a long time is avoided, the safety of the cable is greatly improved, the cable has good pressure resistance, waterproofness and moisture resistance, and can be laid in the special environment with, and the phenomenon of the reduction of the insulation resistance of the cable can be effectively avoided.

4. This patent adopts inner sheath and oversheath adopt polyethylene inner sheath and polyurethane oversheath respectively, because the sheath adopts waterproof polyethylene, the PE inner sheath makes cable laying underground have the stronger characteristic of high waterproof material can better protection sinle silk not receive the damage.

5. This patent adopts insulation core comprises inner conductor and the irradiation polyethylene insulating layer of cladding outside it, because this double-deck sheath structure has guaranteed that the cable has advantages such as good waterproof nature and fire resistance, therefore the cable has good moisture resistance and higher mechanical strength, has avoided insulation resistance to descend, has guaranteed the fail safe nature of cable use.

6. Because the safety in utilization of the cable is improved, the waterproofness and the pressure resistance are greatly improved, the weighing system matched with the cable for use can timely and accurately obtain test data, and effective supervision and monitoring of vehicles on the highway are facilitated.

7. This patent simple structure, reasonable in design has good waterproof nature, stronger anti longitudinal pressure, has solved the technical problem that insulation resistance descends gradually, consequently the utility model discloses suitable lay in the special environment that humidity and need bear great ground pressure for a long time to guaranteed effectively rather than the accuracy of the weighing system measuring result of supporting use.

8. This patent adopts the insulated wire core group form by 4~20 insulated wire core transposition, because 4-20 adjacent arranged insulated wire core transposition forms insulated wire core group, this insulated wire core group wraps up shielding layer and sheath outward in proper order.

Drawings

Fig. 1 is a schematic structural view of the utility model discloses a highway is weighed, monitoring sensor cable.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

in the figure: 1-insulated wire core, 2-insulated wire core group, 3-shielding layer, 4-sheath, 5-inner sheath, 6-outer sheath, 7-inner conductor, 8-insulating layer, 9-filler, 10-composite film, 11-tin-plated copper ground wire, 12-power wire and 13-polyester film.

Example (b):

in this embodiment: as shown in fig. 1, the highway weighing and monitoring sensor cable comprises an insulated wire core group 2 formed by twisting insulated wire cores 1, wherein a shielding layer 3 is wrapped on the outer surface of the insulated wire core group 2, a sheath 4 is wrapped on the outer surface of the shielding layer 3, the sheath 4 comprises an inner sheath 5 and an outer sheath 6, the insulated wire cores 1 are composed of inner conductors 7 and irradiation polyethylene insulating layers 8 wrapped outside the inner conductors, and the gaps of the cable are filled with fillers 9 made of non-hygroscopic materials.

The insulated wire core group 2 is formed by stranding 4-20 insulated wire cores 1.

The shielding layer 3 comprises a polyester aluminum plastic composite film 10 and a tinned copper ground wire 11.

And the tinned copper ground wires 11 are uniformly wound in the gaps at the outer edges of the insulated wire core group 2.

The inner sheath 5 and the outer sheath 6 are respectively a polyethylene inner sheath 5 and a polyurethane outer sheath 6.

A power supply line 12 with an insulated wire core 1 is also arranged in the cable.

And a polyester film 13 is arranged between the shielding layer 3 and the inner sheath 5.

The working principle is as follows:

the utility model discloses a through the shielding layer is wrapped up to the insulating core group surface, the shielding layer surface parcel sheath, the sheath includes inner sheath and oversheath, the insulating core comprises inner conductor and the irradiation polyethylene insulating layer of cladding outside it, the filler that non-hygroscopic material constitutes is filled up to the cable clearance, because highway weighing, monitoring sensor cable, by insulating core, packing, shielding layer and sheath constitute, the insulating core transposition forms insulating core group, shielding layer and sheath are wrapped up in proper order to the insulating core group outside, because the packing comprises non-hygroscopic material, the cable lays in the underground for a long time, this packing can be fine fills up the cable clearance, makes the cable insulating core of cable not damaged when the cable is bearing, the sheath comprises polyethylene inner sheath and the polyurethane oversheath of coaxial parcel in proper order outside the shielding layer, the insulating layer of insulating core adopts irradiation polyethylene to make, the temperature resistant grade of cable has been improved, makes it have characteristics such as good moisture resistance and higher mechanical strength, the utility model provides a main technical problem that prior art exists be owing to lay for a long time that the moist load of cable is great in ground to lead to the problem that the fail safe nature of cable use descends, have avoided the cable to lay under moist, high-voltage environment, the difficult technical problem that insulating layer damage and insulation resistance descend gradually, guaranteed the beneficial technological effect of the fail safe nature of cable use.

Utilize the technical scheme of the utility model, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims

1. The utility model provides a highway is weighed, monitoring sensor cable, its characterized in that includes the insulated wire core group that is formed by the transposition of insulated wire core, insulated wire core group surface parcel shielding layer, shielding layer surface parcel sheath, the sheath includes inner sheath and oversheath, insulated wire core comprises inner conductor and the irradiation polyethylene insulating layer of cladding outside it, the filler that non-hygroscopic material constitutes is filled up in the cable space, the shielding layer includes polyester plastic-aluminum composite film and tin-coated copper ground wire, tin-coated copper ground wire evenly twines in insulated wire core group outer fringe gap, still set up the power cord that has insulated wire core in the cable.

2. The highway weighing and monitoring sensor cable according to claim 1, wherein the insulated wire core group is formed by twisting 4-20 insulated wire cores.

3. The highway weighing and monitoring sensor cable of claim 1, wherein the inner sheath and the outer sheath are respectively a polyethylene inner sheath and a polyurethane outer sheath.

4. The highway weighing and monitoring sensor cable of claim 1, wherein a polyester film is arranged between the shielding layer and the inner sheath.