CN107274998B - A kind of cable and signal transmission system - Google Patents

Abstract

A kind of cable and signal transmission system, are related to wire and cable field.Cable includes the first conducting wire and the second conducting wire of cable body and conduction orientation on the contrary.Cable body includes the first insulating protective layer, shielded layer and the second insulating protective layer from inside to outside.First insulating protective layer has the first guidewire lumen and multiple second guidewire lumens, and the axial line of the first guidewire lumen is overlapped setting with the axial line of the first insulating protective layer, and multiple second guidewire lumens are arranged along the circumferential uniform intervals of the first guidewire lumen.Shielded layer has earthing rod, and earthing rod is protruded towards the second insulating protective layer side by shielded layer and run through the second insulating protective layer, and separate shielded layer one end of earthing rod is also convexly equipped with conical head.First conducting wire is placed in the first guidewire lumen, and each second guidewire lumen is equipped with second conducting wire.Signal transmission system includes above-mentioned cable.The two function of shielding is good, signal stabilization, influences small, safety and stability to electricity piece around, is particularly suitable for high-speed railway and aerospace field.

Description

A kind of cable and signal transmission system

Technical field

The present invention relates to wire and cable fields, in particular to a kind of cable and signal transmission system.

Background technique

The function of shielding of cable itself directly affects the stability of wired signal transmission function, if function of shielding is bad, Being easy, which makes the signal of cable transmission be interfered, causes signal distortion even entanglement occur, can seriously affect signal transmission.It is existing General cable shield function it is bad and unstable, directly affect the quality of wired signal transmission.

Cable can also generate electric field, magnetic field in signals transmission around itself, be easy to the electrical equipment of surrounding and Other cables generate interference, influence its normal operation.Existing general cable in transmission process around can generate it is stronger Magnetic field and electric field can all generate biggish adverse effect to surrounding electrical equipment, other cables.If especially produce compared with Strong electric field is easy to cause harm to the human body, and for the sake of security, existing cable needs to set certain safe distance, this Sample will necessarily waste greatly installation and be laid with space, cause unnecessary waste.

High-speed railway and aerospace are more demanding for cable and cable system, especially for anti-interference and steady Qualitative tool has high requirements, and existing most of cables are simultaneously unsatisfactory for above-mentioned requirements.In high-speed railway and field of aerospace In, if cable anti-interference ability is not strong or cable itself is larger to the interference of electrical equipment around, all easily cause letter There is signal entanglement in number transmission distortion, even results in instrument failure, can directly threaten the public security of the lives and property in this way.

Summary of the invention

The purpose of the present invention is to provide a kind of cables, have stable, excellent function of shielding, and stable signal transmission is quasi- Really；And its own electromagnetic field generated is very faint, influences small, safety and stability to electricity piece around.Especially suitable for high-speed iron Road and space flight and aviation private cable.

Another object of the present invention is to provide a kind of signal transmission systems, have stable, excellent function of shielding, letter It is accurate that number transmission is stablized；And its own electromagnetic field generated is very faint, influences small, safety and stability to electricity piece around.Especially Suitable for high-speed railway and space flight and aviation private cable system.

The embodiment of the present invention is achieved in that

A kind of cable comprising the first conducting wire and the second conducting wire of cable body and conduction orientation on the contrary.Cable body Including the first insulating protective layer, shielded layer and the second insulating protective layer.First insulating protective layer has the first guidewire lumen and multiple Second guidewire lumen, the axial line of the first guidewire lumen are overlapped setting, multiple second guidewire lumens with the axial line of the first insulating protective layer Circumferential uniform intervals along the first guidewire lumen are arranged.Shielded layer is wrapped in the first insulating protective layer, and the second insulating protective layer wraps In shielded layer.Shielded layer has earthing rod, and earthing rod is protruded towards the second insulating protective layer side by shielded layer and runs through the Separate shielded layer one end of two insulating protective layers, earthing rod is also convexly equipped with conical head.First conducting wire is placed in the first guidewire lumen, often A second guidewire lumen is equipped with second conducting wire.It has stable, excellent function of shielding, and stable signal transmission is accurate；And The electromagnetic field that its own is generated is very faint, influences small, safety and stability to electricity piece around.

A kind of signal transmission system comprising above-mentioned cable.It has stable, excellent function of shielding, signal transmission It is accurate to stablize；And its own electromagnetic field generated is very faint, influences small, safety and stability to electricity piece around.

The beneficial effect of the embodiment of the present invention is: cable provided in an embodiment of the present invention has the screen of earthing rod by setting Layer is covered, is grounded using the conical head of earthing rod.Due to point effect, earthing rod is conducive to quickly be formed in shielded layer and stablize Shielding field, guarantee the stability and accuracy of wired signal transmission.It has stable, excellent function of shielding, signal transmission It is accurate to stablize.

Circumferential uniform intervals due to multiple second guidewire lumens along the first guidewire lumen are arranged, and the first conducting wire and the second conducting wire Conduction orientation on the contrary, so the electromagnetic field that the first conducting wire is respectively generated with the second conducting wire can cancel out each other, in this way can be big The big electromagnetic field weakened around cable, the electromagnetic field for generating its own is very faint, small on the influence of electricity piece around, and safety is steady Calmly so that influence of the cable to electricity piece around greatly reduces, safety and stability are improved.

Signal transmission system provided in an embodiment of the present invention has stable, excellent function of shielding, stable signal transmission Accurately；And its own electromagnetic field generated is very faint, influences small, safety and stability to electricity piece around.The embodiment of the present invention mentions The cable and signal transmission system of confession are especially suitable for the higher high-speed railway of request signal transmission and space flight and aviation neck Domain.The excellent signal stabilization of the two, anti-interference ability and to the lesser interference of electrical component around, so that the present invention is implemented The cable and signal transmission system that example provides can satisfy the signal transmission standard of high-speed railway and space flight and aviation and improve whole Stability, the accuracy of body signal transmission, and then guarantee the safety of high-speed railway and space flight and aviation system operation, it ensures public The security of the lives and property.

Detailed description of the invention

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other relevant attached drawings.

Fig. 1 is the first visual angle schematic diagram of cable provided in an embodiment of the present invention；

Fig. 2 is the second visual angle schematic diagram of the cable in Fig. 1；

Fig. 3 be Fig. 1 in cable along the sectional view of A-A；

Fig. 4 is the schematic diagram that the cable in Fig. 1 is connect with ground connection conductive sleeve；

Fig. 5 is the first visual angle schematic diagram of the conducting wire ball of the cable in Fig. 1；

Fig. 6 is the second visual angle schematic diagram of the conducting wire ball of the cable in Fig. 1；

Fig. 7 is the first spherical shell of the conducting wire ball of the cable in Fig. 1 and the first state schematic diagram of the second spherical shell matching relationship；

Fig. 8 is the first spherical shell of the conducting wire ball of the cable in Fig. 1 and the second status diagram of the second spherical shell matching relationship；

Fig. 9 is the schematic diagram of the first conducting wire of the cable in Fig. 1；

Figure 10 is the schematic diagram of other design forms of the conducting wire ball of the cable in Fig. 1.

Icon: 100- cable；110- cable body；The first insulating protective layer of 111-；The first guidewire lumen of 111a-；111b- Two guidewire lumens；112- shielded layer；112a- earthing rod；112b- conical head；The second insulating protective layer of 113-；The first conducting wire of 120-； 121- convex block；The second conducting wire of 130-；140- is grounded the band of column；150- is grounded conductive sleeve；160- ground line；The embedded skeleton of 170-； 180- conducting wire ball；181- wire guide；The first spherical shell of 182-；The first clamping portion 182a-；The first guide wall of 182b-；182c- is abutted Portion；The second spherical shell of 183-；The second clamping portion 183a-；The second guide wall of 183b-；184- card slot.

Specific embodiment

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented The component of example can be arranged and be designed with a variety of different configurations.

Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects It encloses.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

Term " first ", " second ", " third " etc. are only used for distinguishing description, are not understood to indicate or imply relatively heavy The property wanted.

In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition State the concrete meaning of term in the present invention.

Embodiment

Fig. 1, Fig. 2 and Fig. 3 are please referred to, the present embodiment provides a kind of cables 100.Cable 100 include cable body 110 and Conduction orientation opposite the first conducting wire 120 and the second conducting wire 130.

Cable body 110 includes the first insulating protective layer 111, shielded layer 112 and the second insulating protective layer 113.First absolutely Edge protective layer 111 has the first guidewire lumen 111a and multiple second guidewire lumen 111b.The axial line of first guidewire lumen 111a and The axial line of one insulating protective layer 111 is overlapped setting, and multiple second guidewire lumen 111b are along the circumferential uniform of the first guidewire lumen 111a Interval setting.

Shielded layer 112 is wrapped in the first insulating protective layer 111, and the second insulating protective layer 113 is wrapped in shielded layer 112.Screen Layer 112 is covered to be protruded simultaneously by shielded layer 112 towards 113 side of the second insulating protective layer with earthing rod 112a, earthing rod 112a Through the second insulating protective layer 113,112 one end of separate shielded layer of earthing rod 112a is also convexly equipped with conical head 112b.First leads Line 120 is placed in the first guidewire lumen 111a, each second guidewire lumen 111b and is equipped with second conducting wire 130.Wherein, earthing rod 112a is electrically connected with the realization of shielded layer 112.

Since shielded layer 112 is set between the first insulating protective layer 111 and the second insulating protective layer 113, shielded layer 112 is not It will receive directly affecting for outer partial electric current, the shielding action for enabling shielded layer 112 to play stably.

When interference of the cable 100 by external electromagnetic field, due to the point effect of conical head 112b, electronics can be accelerated to exist The movement rate of shielded layer 112, so that shielded layer 112 quickly forms stable shielding field, the interference for being subject to cable 100 to the greatest extent may be used It can reduce.Guarantee the stability and accuracy of the transmission of 100 signal of cable.

On the other hand, multiple second guidewire lumen 111b are arranged along the circumferential uniform intervals of the first guidewire lumen 111a, and first The conduction orientation of conducting wire 120 and the second conducting wire 130 is on the contrary, facilitate the electricity that the first conducting wire 120 and the second conducting wire 130 respectively generate Magnetic field is mutually sufficiently offset, since multiple second guidewire lumen 111b are arranged along the circumferential uniform intervals of the first guidewire lumen 111a, the The electromagnetic field registration highest that the electromagnetic field and the second conducting wire 130 that one conducting wire 120 generates generate is conducive to cable 100 itself production Raw electromagnetic field is sufficiently eliminated.Total electromagnetic field around cable 100 is very faint, can greatly reduce around 100 pairs of cable The influence and interference of electricity piece.Laying just is greatly saved it is not necessary that safe distance is arranged to cable 100 or exempts from interference distance in this way Space, and improve the safety and stability of cable 100.

Further, the diameter of the second guidewire lumen 111b is slightly larger than the outer diameter of the second conducting wire 130.The structure can be limited effectively The relative position of fixed second conducting wire 130, makes the second conducting wire 130 as far as possible with the second guidewire lumen 111b along the first guidewire lumen 111a's Circumferential uniform intervals setting, the electromagnetic field for guaranteeing that the first conducting wire 120 is respectively generated with the second conducting wire 130 are mutually sufficiently offset.

Further, earthing rod 112a has multiple, and earthing rod 112a is cylindrical, the axial line edge of multiple earthing rod 112a Cable 100 is arranged radially, and multiple earthing rod 112a are arranged to form the ground connection band of column 140 along the circumferential uniform intervals of cable 100.Edge The uniformity of shielding field caused by shielded layer 112 can be enhanced in the earthing rod 112a of the circumferential uniform intervals setting of cable 100 With stability, the shielding properties of cable 100 is improved.

It should be noted that the ground connection band of column 140 is at least one, according to different laying demand and working environment need It wants, the spacing between the number and each ground connection band of column 140 of the ground connection band of column 140 can be adjusted flexibly.

Further, Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are please referred to, the ground connection band of column 140 is arranged with ground connection conductive sleeve 150, and ground connection is led Electricity set 150 is annular in shape, and ground connection conductive sleeve 150 and cable 100 are coaxially disposed, and is grounded the inner wall and conical head of conductive sleeve 150 112b offsets, and ground connection conductive sleeve 150 is grounded by ground line 160.

Further, insulation processing is made in 112 side of separate shielded layer for being grounded conductive sleeve 150, and ground connection conductive sleeve 150 leans on Close shield layer 112 side is to be grounded the inner wall of conductive sleeve 150 to offset and realize with conical head 112b and be electrically connected with shielded layer 112 It connects.

Each earthing rod 112a is connected to by ground connection conductive sleeve 150 and passes through ground line 160 and is uniformly grounded, Ke Yiyou Effect avoids influence of the local current to shielded layer 112 around cable 100.Especially when apparent electricity occurs in 100 surrounding of cable When potential difference, ground connection conductive sleeve 150 can damage to avoid shielding field of the applied external potential difference to shielded layer 112, have protection screen The effect for covering layer 112 allows the function of shielding of shielded layer 112 normally to play a role, and guarantees the stability of cable 100.

Further, cable 100 further includes embedded skeleton 170, embedded skeleton 170 in the shape of a spiral, embedded skeleton 170 are embedded at the side wall of the first guidewire lumen 111a, axial direction setting of the embedded skeleton 170 along cable 100, embedded skeleton 170 Axial line be overlapped with the axial line of the first guidewire lumen 111a setting and embedded skeleton 170 internal diameter and the first guidewire lumen 111a Diameter it is equal.Wherein, embedded skeleton 170 is made of any one in epoxy resin, glass fibre and Nomex paper.

Epoxy resin, glass fibre and Nomex paper all have good insulation performance, and have high-intensitive, high resistance to The features such as hot, high resistant to partial discharges, improves the stability and safety of cable 100.Embedded skeleton 170 has good Mechanical strength has supporting function to cable 100, cable 100 can be effectively prevented and occur local collapse in use Problem.Further, since embedded skeleton 170 design it is spiral, can be with cable 100 on the basis of having supporting function It is bent, is not interfered with the normal laying of cable 100.Different from existing cable, existing cable is having high machinery by force Will appear the difficult problem of bending in the case where degree, great puzzlement caused to the laying of cable, and cable 100 overcome with Upper problem.

Further, the screw pitch of embedded skeleton 170 is 6cm~20cm.The section of embedded skeleton 170 is in rough square Shape is conducive to make in this way the first guidewire lumen 111a to obtain side wall and keeps smooth, is easily installed the first conducting wire 120 and not easy to wear.

Further, Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8 are please referred to, cable 100 further includes conducting wire ball 180, conducting wire ball 180 is placed in the first guidewire lumen 111a, and conducting wire ball 180 has the wire guide 181 passed through for the first conducting wire 120. In spherical, the axial line of wire guide 181 is overlapped conducting wire ball 180 with a diameter of conducting wire ball 180.Conducting wire ball 180 includes removable The first spherical shell 182 and the second spherical shell 183 of connection are unloaded, the first spherical shell 182 and the second spherical shell 183 surround wire guide 181.Wherein, The diameter of wire guide 181 is slightly larger than the outer diameter of the first conducting wire 120, and the outer diameter of conducting wire ball 180 is slightly less than the first guidewire lumen 111a's Diameter.

Conducting wire ball 180 can be such that the contact area between the first conducting wire 120 and the side wall of the first guidewire lumen 111a reduces, and make Phase mutual friction between first conducting wire 120 and the side wall of the first guidewire lumen 111a is reduced, and is conducive to protect the first conducting wire 120.This Outside, since the outer diameter of conducting wire ball 180 is slightly less than the diameter of the first guidewire lumen 111a, and the axial line of wire guide 181 and conducting wire ball 180 diameter is overlapped, this makes the first conducting wire 120 be located substantially at the axis line location of the first guidewire lumen 111a, to make the The electromagnetic field that one conducting wire 120 is respectively generated with the second conducting wire 130 is sufficiently offset as far as possible, is conducive to further weaken cable 100 The electromagnetic field that itself is generated to further decrease 100 pairs of surrounding electricity piece interference of cable, and further improves cable simultaneously 100 safety and stability.

Further, connection is realized by clamping between the first spherical shell 182 and the second spherical shell 183.Specifically, the first spherical shell 182 have the first clamping portion 182a, and the second spherical shell 183 has the second clamping portion 183a for being caught in the first clamping portion 182a. First clamping portion 182a close to 183 side of the second spherical shell with first the guide wall 182b, the second clamping portion 183a close to the One spherical shell, 182 side has the second guide wall 183b.Along the first spherical shell 182 towards the direction of the second spherical shell 183, the first guide wall 182b is gradually close towards the axial line side of wire guide 181, and the second guide wall 183b is gradually distance from the axle center of wire guide 181 Line side, the first guide wall 182b are complementary with the second guide wall 183b shape.

First guide wall 182b and the second guide wall 183b can effectively reduce the first spherical shell 182 and the second spherical shell 183 blocks Resistance when connecing is installed convenient for conducting wire ball 180.And the first spherical shell 182 can be effectively prevented and be mutually disengaged with the second spherical shell 183.

Further, along the axial direction of wire guide 181, the first spherical shell 182 has for the both ends with the second clamping portion 183a The abutting part 182c to offset, after the first spherical shell 182 and the clamping of the second spherical shell 183, abutting part 182c can be connected to the second clamping The both ends of portion 183a prevent that opposite sliding occurs along the axial of wire guide 181 between the first spherical shell 182 and the second spherical shell 183, protect Demonstrate,prove the compactness of the first spherical shell 182 and the clamping of the second spherical shell 183 and the stability of conducting wire ball 180.

Further, Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9 are please referred to, conducting wire ball 180 has card slot 184, card slot 184 is recessed by the side wall of wire guide 181 towards the axial line side far from wire guide 181.First conducting wire 120, which has, to be used In the convex block 121 engaged with card slot 184.The structure can prevent conducting wire ball 180 from sliding along the axial direction of the first conducting wire 120, It prevents conducting wire ball 180 from assembling, the first conducting wire 120 is accurately limited, make the first conducting wire 120 generally within first The axis line location of guidewire lumen 111a.

Specifically, in the present embodiment, wire guide 181 is used to pass through for single first conducting wire 120.It should be noted that In other embodiments of the invention, wire guide 181 can also be other shapes, and wire guide 181 can be used for for 2,3,4 Root even more first conducting wires 120 pass through, as shown in Figure 10.Same axis of these first conducting wires 120 along conducting wire ball 180 The circumferential direction of line is uniformly arranged, and guarantees that the electromagnetic field of the first conducting wire 120 and the second conducting wire 130 can sufficiently be offset.

Further, please continue to refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, in the present embodiment, Card slot 184 is annular in shape with convex block 121.0.5~3m is spaced between two conducting wire balls 180.

Further, the first guidewire lumen 111a and the second guidewire lumen 111b fill lithium base grease.Lithium base grease tool There are excellent water-resistance, mechanical stability, resistance to extreme pressure anti-wear, waterproofness, rust-preventing characteristic and oxidation stability.Lithium base grease exists Under exceedingly odious environmental condition, its function still can be played, Applicable temperature range is -20 DEG C~120 DEG C.Lithium base grease can To greatly improve the security and stability and adaptive capacity to environment of cable 100, and help to improve the service life of cable 100.

When first conducting wire 120 of cable 100 needs replacing, no replacement is required whole cable 100 can be by the first conducting wire 120 Extraction re-replaces.Since conducting wire ball 180 can greatly reduce the contact of the first conducting wire 120 with the side wall of the first guidewire lumen 111a Area, so that the friction between the first conducting wire 120 and the side wall of the first guidewire lumen 111a greatly reduces.In addition lithium base grease Lubricating action, the friction between conducting wire ball 180 and the first conducting wire 120 and the side wall of the first guidewire lumen 111a further decrease, Be conducive to the replacement of the first conducting wire 120.

The working principle of cable 100 is: when carrying out signal transmission using cable 100, the first conducting wire 120 and the second conducting wire 130 can generate electromagnetic field, but since the second conducting wire 130 is arranged along the circumferential uniform intervals of the first conducting wire 120, first The electromagnetic field that both conducting wire 120 and the second conducting wire 130 generate can substantially cancel out each other, total electromagnetic field around cable 100 its Be in fact it is very faint, can effectively reduce interference of the cable 100 to surrounding electricity piece in this way, improve the peace of cable 100 Total stability.

When cable 100 is interfered by external electromagnetic field, shielded layer 112 can quickly be formed stable using point effect Field is shielded, makes cable 100 from the interference of external electromagnetic field, guarantees the accuracy and stability of the transmission of 100 signal of cable.

In general, cable 100 has stable, excellent function of shielding, and stable signal transmission is accurate；And its own is generated Electromagnetic field it is very faint, on electricity piece around influence it is small, securely and reliably.High-speed railway and aerospace are for cable and electricity Cable system requirements is higher, has high requirements especially for anti-interference and stability tool, existing most of cables are simultaneously discontented with Sufficient above-mentioned requirements.Cable 100 with its superior stability, anti-interference and safety particularly suitable for high-speed railway with And space flight and aviation private cable.

The present embodiment also provides a kind of signal transmission system comprising cable 100.The signal transmission system equally has surely Fixed, excellent function of shielding, stable signal transmission are accurate；And its own electromagnetic field generated is very faint, to electricity piece around Influence it is small, securely and reliably.The signal transmission system is particularly suitable for high-speed railway and space flight and aviation private cable system.

High-speed railway and aerospace are more demanding for cable and cable system, especially for anti-interference and steady Qualitative tool has high requirements, and existing most of cables are simultaneously unsatisfactory for above-mentioned requirements.In high-speed railway and field of aerospace In, if cable anti-interference ability is not strong or cable itself is larger to the interference of electrical equipment around, all easily cause letter There is signal entanglement in number transmission distortion, even results in instrument failure, can directly threaten the public security of the lives and property in this way.

Cable 100 and signal transmission system provided in this embodiment are especially suitable for the higher height of request signal transmission Fast railway and field of aerospace, the excellent signal stabilization of the two, anti-interference ability and smaller to electrical component around Interference so that cable provided in this embodiment 100 and signal transmission system can satisfy high-speed railway and space flight and aviation Signal transmission standard simultaneously improves the stability of overall signal transmission, accuracy, and then guarantees high-speed railway and space flight and aviation system The safety of running ensures the public security of the lives and property.

The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (9)

1. a kind of cable, which is characterized in that including cable body and conduction orientation opposite the first conducting wire and the second conducting wire；Institute Stating cable body includes the first insulating protective layer, shielded layer and the second insulating protective layer；First insulating protective layer has the One guidewire lumen and multiple second guidewire lumens, the axial line weight of the axial line of first guidewire lumen and first insulating protective layer Setting is closed, multiple second guidewire lumens are arranged along the circumferential uniform intervals of first guidewire lumen；The shielded layer wrap in First insulating protective layer, second insulating protective layer are wrapped in the shielded layer；The shielded layer has earthing rod, institute It states earthing rod and second insulating protective layer is protruded by the shielded layer and run through towards the second insulating protective layer side, The earthing rod is also convexly equipped with conical head far from described shielded layer one end；First conducting wire is placed in first conducting wire Chamber, each second guidewire lumen are equipped with second conducting wire；Diameter of the axial line of the earthing rod along the cable To setting, the earthing rod be it is multiple, multiple earthing rods are arranged to form earthing rod along the circumferential uniform intervals of the cable Ring；The cable is provided at least one ground connection band of column along its axial direction.

2. cable according to claim 1, which is characterized in that the cable further includes embedded skeleton, described embedded In the shape of a spiral, the embedded skeleton is embedded at the side wall of first guidewire lumen, the axial line of the embedded skeleton to skeleton The internal diameter of setting and the embedded skeleton and the diameter of first guidewire lumen are overlapped with the axial line of first guidewire lumen It is equal.

3. cable according to claim 2, which is characterized in that the embedded skeleton by epoxy resin, glass fibre and Any one in Nomex paper is made.

4. cable according to claim 1, which is characterized in that the cable further includes conducting wire ball, the conducting wire ball accommodating In first guidewire lumen, the conducting wire ball has the wire guide passed through for first conducting wire；The conducting wire ball includes removable The first spherical shell and the second spherical shell of connection are unloaded, first spherical shell and second spherical shell surround the wire guide.

5. cable according to claim 4, which is characterized in that the conducting wire ball has card slot, and the card slot is led by described The side wall of string holes is recessed towards the axial line side far from the wire guide；First conducting wire has for engaging with the card slot Convex block.

6. cable according to claim 5, which is characterized in that the diameter of first guidewire lumen is slightly larger than the conducting wire ball Outer diameter, the diameter of second guidewire lumen is slightly larger than the diameter of second conducting wire.

7. cable according to claim 1, which is characterized in that the earthing rod ring set is equipped with ground connection conductive sleeve, described to connect Ground conductive sleeve and the cable are coaxially disposed, and the inner wall of the ground connection conductive sleeve offsets with the conical head, and the ground connection is conductive Set is by ground connection.

8. cable according to claim 1, which is characterized in that first guidewire lumen and second guidewire lumen fill Lithium base grease.

9. a kind of signal transmission system, which is characterized in that including the cable as described in claim 1-8 any one.