A military-grade lightweight phase-stabilized cable

Abstract

This application provides a military-grade lightweight phase-stable cable, relating to the field of cable technology. It includes a protective layer and a conductor core. The protective layer encloses the conductor core, which comprises multiple conductor units arranged sequentially along the axial direction. Adjacent conductor units are adapted to move relative to each other along the axial direction and are in contact with each other. The conductor units are made of a conductor material. The military-grade lightweight phase-stable cable provided by this application uses multiple conductor units connected in series, allowing for relative movement between adjacent conductor units along the axial direction. This provides space for axial linear expansion. Compared to existing technologies, this reduces the change in axial length due to temperature variations, reduces the impact of temperature on the dielectric constant of the conductor core, and improves the phase stability of the cable.

Description

Technical Field

[0001] This application relates to the field of cable technology, and in particular to a military-grade lightweight phase-stable cable. Background Technology

[0002] A phase-stable cable is a type of cable with stable phase performance, typically used in environments with large temperature differences, such as in the military industry.

[0003] Phase stabilization in a stable cable is divided into mechanical phase stabilization and temperature phase stabilization. Mechanical phase stabilization refers to the change in the stable phase of the cable during bending and vibration, while temperature phase stabilization refers to the change in the stable phase of the cable during temperature changes. Temperature changes cause the dielectric layer (usually the core) of the cable to expand or contract, changing the length of the core and its dielectric constant, thus resulting in a change in the cable's phase. Summary of the Invention

[0004] This application provides a military-grade lightweight stable phase cable to solve the problem that the core length of cables in the prior art changes with temperature.

[0005] In an embodiment of this application, a military-grade lightweight phase-stable cable is provided, comprising a protective layer and a conductor. The protective layer encloses the conductor, which comprises a plurality of conductor units arranged sequentially along the axial direction. Adjacent conductor units are adapted to move relative to each other along the axial direction and are in contact with each other. The conductor units are made of a conductor material.

[0006] In some embodiments of this application, adjacent core units are slidably connected along the axial direction.

[0007] In some embodiments of this application, the cross-sectional shape of the core unit is circular;

[0008] One end face of the core unit is integrally connected to a first semi-cylindrical protrusion, which is arranged along the axial direction of the core unit. The other end face of the core unit is integrally connected to a second semi-cylindrical protrusion, which is also arranged along the axial direction of the core unit. The diameter of the first semi-cylindrical protrusion is equal to the diameter of the core unit, and the diameter of the second semi-cylindrical protrusion is equal to the diameter of the core unit.

[0009] One end of the core unit is provided with a first semi-cylindrical notch, which is arranged along the axial direction of the core unit. The other end of the core unit is provided with a second semi-cylindrical notch, which is also arranged along the axial direction of the core unit. The diameter of the first semi-cylindrical notch is equal to the diameter of the core unit, and the diameter of the second semi-cylindrical notch is equal to the diameter of the core unit.

[0010] The central axis of the core unit, the central axis of the first semi-cylindrical protrusion, the central axis of the second semi-cylindrical protrusion, the central axis of the first semi-cylindrical notch, and the central axis of the second semi-cylindrical notch are all located on the same straight line.

[0011] The first semi-cylindrical protrusion and the first semi-cylindrical notch are located at one end of the core unit, and the second semi-cylindrical protrusion and the second semi-cylindrical notch are located at the other end of the core unit;

[0012] In adjacent core units, the first semi-cylindrical protrusion of the first core unit and the second semi-cylindrical notch of the second core unit are inserted into each other along the axial direction of the core unit. The second semi-cylindrical protrusion of the second core unit and the first semi-cylindrical notch of the first core unit are inserted into each other along the axial direction of the core unit. The first semi-cylindrical protrusion of the first core unit and the second semi-cylindrical protrusion of the second core unit are in contact and engaged. The first semi-cylindrical protrusion of the first core unit and the second semi-cylindrical protrusion of the second core unit are slidably connected along the axial direction of the core unit.

[0013] In some embodiments of this application, the axial length of the first semi-cylindrical protrusion along the core unit is equal to the axial length of the second semi-cylindrical protrusion along the core unit.

[0014] In adjacent core units, there is a first gap between the end face of the first semi-cylindrical protrusion of the first core unit and the end face of the second core unit, and a second gap between the end face of the second semi-cylindrical protrusion of the second core unit and the end face of the first core unit.

[0015] In some embodiments of this application, a first spacer block is provided in the first gap, and a second spacer block is provided in the second gap;

[0016] In adjacent core units, one end of the first spacer block is pressed against the end face of the first semi-cylindrical protrusion of the first core unit along the axial direction of the core unit, and the other end of the first spacer block is pressed against the end face of the second core unit along the axial direction of the core unit.

[0017] In adjacent core units, one end of the second spacer block is pressed against the end face of the second semi-cylindrical protrusion of the second core unit along the axial direction of the core unit, and the other end of the second spacer block is pressed against the end face of the first core unit along the axial direction of the core unit.

[0018] The coefficient of linear expansion of the first spacer block is greater than that of the core unit, and the coefficient of linear expansion of the second spacer block is less than that of the core unit.

[0019] The first spacer block and the second spacer block are elastic and are in a compressed state.

[0020] In some embodiments of this application, the cross-sectional shape of the core unit is circular;

[0021] A cylindrical insert is integrally connected to the center of one end face of the core unit. The cylindrical insert is arranged along the axial direction of the core unit. A cylindrical insertion hole is provided at the center of the other end of the core unit. The cylindrical insertion hole is arranged along the axial direction of the core unit. The diameter of the cylindrical insert is smaller than the diameter of the core unit, and the diameter of the cylindrical insertion hole is equal to the diameter of the cylindrical insert.

[0022] In adjacent core units, the cylindrical insert of the first core unit and the cylindrical socket of the second core unit are inserted along the axial direction of the core unit. The outer side of the cylindrical insert of the first core unit and the inner side of the cylindrical socket of the second core unit are in contact and engaged. The outer side of the cylindrical insert of the first core unit and the inner side of the cylindrical socket of the second core unit are slidably connected along the axial direction of the core unit.

[0023] In some embodiments of this application, the axial length of the cylindrical insert along the core unit is equal to the axial length of the cylindrical insertion hole along the core unit;

[0024] In adjacent core units, there is a third gap between the end face of the first core unit and the end face of the second core unit, and a fourth gap between the end face of the cylindrical insert of the first core unit and the bottom face of the cylindrical insertion hole of the second core unit.

[0025] In some embodiments of this application, a third spacer block is provided in the third gap, and a fourth spacer block is provided in the fourth gap;

[0026] In adjacent core units, one end of the third spacer is pressed against the end face of the first core unit along the axial direction of the core unit, the other end of the third spacer is pressed against the end face of the second core unit along the axial direction of the core unit, one end of the fourth spacer is pressed against the bottom surface of the cylindrical insertion hole of the first core unit along the axial direction of the core unit, and the other end of the fourth spacer is pressed against the end face of the cylindrical insertion rod of the second core unit along the axial direction of the core unit;

[0027] The coefficient of linear expansion of the third spacer block is greater than that of the core unit, and the coefficient of linear expansion of the fourth spacer block is greater than that of the core unit.

[0028] The third and fourth spacers are elastic and are in a compressed state.

[0029] In some embodiments of this application, the protective layer includes a shaping layer that wraps around the wire core, with the outer surface of each wire core unit pressed against the inner surface of the shaping layer, and the shaping layer being made of an insulating material;

[0030] The protective layer also includes a binding layer made of steel wire, which is spirally wound around the outside of the shaping layer, and the inner side of the binding layer is pressed tightly against the shaping layer.

[0031] In some embodiments of this application, the protective layer further includes a shielding layer and an insulating layer. The shielding layer is made of a metallic material, and the insulating layer is made of an insulating material. The shielding layer wraps around the binding layer, and the insulating layer wraps around the shielding layer.

[0032] This application has the following beneficial effects:

[0033] The military lightweight stable phase cable provided in this application uses multiple core units connected in series. Adjacent core units can move relative to each other along the axial direction, providing space for axial linear expansion. Compared with the prior art, this can reduce the change in axial length caused by temperature changes, reduce the impact of temperature on the dielectric constant of the core, and improve the phase stability of the cable. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a structural schematic diagram of a military-grade lightweight phase-stable cable according to an embodiment of this application;

[0036] Figure 2 This is a cross-sectional view of the military lightweight phase-stable cable in the embodiment of this application, with the plane passing through the central axis of the conductor as the cutting plane.

[0037] Figure 3 It is along Figure 2 Sectional view of line AA in the middle;

[0038] Figure 4 It is along Figure 2 Sectional view of the middle BB line;

[0039] Figure 5 This is a schematic diagram of the structure of a wire core unit in an embodiment of this application;

[0040] Figure 6 This is a schematic diagram of the connection between the first spacer block and the second spacer block and the core unit in an embodiment of this application;

[0041] Figure 7 This is a schematic diagram of another wire core structure in an embodiment of this application;

[0042] Figure 8 It is along Figure 7 A cross-sectional view of the CC line;

[0043] Figure 9 This is a schematic diagram of the connection structure between the third and fourth spacer blocks and the core unit in the embodiments of this application;

[0044] Figure 10 It is along Figure 9 A cross-sectional view of the DD line.

[0045] Figure label:

[0046] 101. Protective layer; 102. Core unit; 103. First semi-cylindrical protrusion; 104. Second semi-cylindrical protrusion; 105. First semi-cylindrical notch; 106. Second semi-cylindrical notch; 107. First gap; 108. Second gap; 109. First spacer block; 110. Second spacer block; 111. Cylindrical insertion rod; 112. Cylindrical insertion hole; 113. Third gap; 114. Fourth gap; 115. Third spacer block; 116. Fourth spacer block; 117. Shaping layer; 118. Bundling layer; 119. Shielding layer; 120. Insulation layer. Detailed Implementation

[0047] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The terminology used in the embodiments section of this application is only used to explain the specific embodiments of this application and is not intended to limit this application.

[0048] like Figures 1 to 6 As shown in the embodiments of this application, a military lightweight phase-stable cable is provided, including a protective layer 101 and a core. The protective layer 101 is provided to wrap the core. The core includes a plurality of core units 102, each of the core units 102 is arranged sequentially along the axial direction, adjacent core units 102 are adapted to move relative to each other along the axial direction, and adjacent core units 102 are in contact with each other. The core unit 102 is made of a conductor material.

[0049] The military lightweight phase-stable cable provided in this embodiment uses multiple core units 102 connected in series. Adjacent core units 102 can move relative to each other along the axial direction, providing space for axial linear expansion. Compared with the prior art, this can reduce the change in axial length caused by temperature changes, reduce the impact of temperature on the dielectric constant of the core, and improve the phase stability of the cable.

[0050] In some embodiments of this example, adjacent core units 102 are slidably connected along the axial direction.

[0051] In some embodiments of this example, the cross-sectional shape of the core unit 102 is circular;

[0052] One end face of the core unit 102 is integrally connected to a first semi-cylindrical protrusion 103, which is arranged along the axial direction of the core unit 102. The other end face of the core unit 102 is integrally connected to a second semi-cylindrical protrusion 104, which is arranged along the axial direction of the core unit 102. The diameter of the first semi-cylindrical protrusion 103 is equal to the diameter of the core unit 102, and the diameter of the second semi-cylindrical protrusion 104 is equal to the diameter of the core unit 102.

[0053] One end of the core unit 102 is provided with a first semi-cylindrical notch 105, which is arranged along the axial direction of the core unit 102. The other end of the core unit 102 is provided with a second semi-cylindrical notch 106, which is arranged along the axial direction of the core unit 102. The diameter of the first semi-cylindrical notch 105 is equal to the diameter of the core unit 102, and the diameter of the second semi-cylindrical notch 106 is equal to the diameter of the core unit 102.

[0054] The central axis of the core unit 102, the central axis of the first semi-cylindrical protrusion 103, the central axis of the second semi-cylindrical protrusion 104, the central axis of the first semi-cylindrical notch 105, and the central axis of the second semi-cylindrical notch 106 are located on the same straight line.

[0055] The first semi-cylindrical protrusion 103 and the first semi-cylindrical notch 105 are located at one end of the core unit 102, and the second semi-cylindrical protrusion 104 and the second semi-cylindrical notch 106 are located at the other end of the core unit 102;

[0056] In adjacent core units 102, the first semi-cylindrical protrusion 103 of the first core unit 102 is inserted into the second semi-cylindrical notch 106 of the second core unit 102 along the axial direction of the core unit 102; the second semi-cylindrical protrusion 104 of the second core unit 102 is inserted into the first semi-cylindrical notch 105 of the first core unit 102 along the axial direction of the core unit 102; the first semi-cylindrical protrusion 103 of the first core unit 102 and the second semi-cylindrical protrusion 104 of the second core unit 102 are in contact and engaged; and the first semi-cylindrical protrusion 103 of the first core unit 102 and the second semi-cylindrical protrusion 104 of the second core unit 102 are slidably connected along the axial direction of the core unit 102.

[0057] In the above-described embodiments of this example, the core unit 102 is made of copper. The first semi-cylindrical notch 105 and the second semi-cylindrical notch 106 are located on both sides of the core unit 102. Adjacent core units 102 are engaged by the first semi-cylindrical protrusion 103 and the second semi-cylindrical notch 106 at the ends, or by the second semi-cylindrical protrusion 104 and the first semi-cylindrical notch 105 at the ends. The protective layer 101 covers the core unit 102, so that the first semi-cylindrical protrusion and the second semi-cylindrical protrusion 104 are kept in a tight fit along the radial direction of the core unit 102. The first semi-cylindrical protrusion 103 and the second semi-cylindrical protrusion 104 can maintain stable contact during the axial sliding process. The mating surfaces of the first semi-cylindrical protrusion 103 and the second semi-cylindrical protrusion 104 are extruded and formed by the same extrusion die, resulting in a tight fit and good contact. During the relative sliding process of adjacent core units 102, the dielectric constant is not easily changed due to the relative sliding of the mating surfaces.

[0058] In some embodiments of this example, the axial length of the first semi-cylindrical protrusion 103 along the core unit 102 is equal to the axial length of the second semi-cylindrical protrusion 104 along the core unit 102.

[0059] In adjacent core units 102, there is a first gap 107 between the end face of the first semi-cylindrical protrusion 103 of the first core unit 102 and the end face of the second core unit 102, and a second gap 108 between the end face of the second semi-cylindrical protrusion 104 of the second core unit 102 and the end face of the first core unit 102.

[0060] Through the above-described implementation of this embodiment, when the first semi-cylindrical protrusion 103 and the second semi-cylindrical protrusion 104 slide relative to each other along the axial direction of the core unit 102, the first gap 107 and the second gap 108 can provide space for the first semi-cylindrical protrusion 103 and the second semi-cylindrical protrusion 104 to move, so that the adjacent core units 102 as a whole do not move along the axial direction or reduce the distance that the adjacent core units 102 move along the axial direction, thereby reducing the change in the length of the core due to temperature changes.

[0061] In some embodiments of this example, a first spacer block 109 is provided in the first gap 107, and a second spacer block 110 is provided in the second gap 108;

[0062] In adjacent core units 102, one end of the first spacer block 109 is pressed against the end face of the first semi-cylindrical protrusion 103 of the first core unit 102 along the axial direction of the core unit 102, and the other end of the first spacer block 109 is pressed against the end face of the second core unit 102 along the axial direction of the core unit 102.

[0063] In adjacent core units 102, one end of the second spacer block 110 is pressed against the end face of the second semi-cylindrical protrusion 104 of the second core unit 102 along the axial direction of the core unit 102, and the other end of the second spacer block 110 is pressed against the end face of the first core unit 102 along the axial direction of the core unit 102.

[0064] The coefficient of linear expansion of the first spacer block 109 is greater than that of the core unit 102, and the coefficient of linear expansion of the second spacer block 110 is less than that of the core unit 102.

[0065] The first spacer 109 and the second spacer 110 are elastic and are in a compressed state.

[0066] Through the above implementation of this embodiment, the first spacer 109 and the second spacer 110 are made of rubber material, which can provide tension force to adjacent core units 102 along the axial direction, and prevent the adjacent core units 102 from moving relative to each other along the axial direction during the mechanical bending of the cable.

[0067] like Figures 7 to 10 As shown, in some embodiments of this example, the cross-sectional shape of the core unit 102 is circular;

[0068] A cylindrical insert 111 is integrally connected to the center of one end face of the core unit 102. The cylindrical insert 111 is arranged along the axial direction of the core unit 102. A cylindrical insertion hole 112 is provided at the center of the other end of the core unit 102. The cylindrical insertion hole 112 is arranged along the axial direction of the core unit 102. The diameter of the cylindrical insert 111 is smaller than the diameter of the core unit 102, and the diameter of the cylindrical insertion hole 112 is equal to the diameter of the cylindrical insert 111.

[0069] In adjacent core units 102, the cylindrical insert 111 of the first core unit 102 is inserted into the cylindrical socket 112 of the second core unit 102 along the axial direction of the core unit 102. The outer side of the cylindrical insert 111 of the first core unit 102 is in contact with the inner side of the cylindrical socket 112 of the second core unit 102. The outer side of the cylindrical insert 111 of the first core unit 102 and the inner side of the cylindrical socket 112 of the second core unit 102 are slidably connected along the axial direction of the core unit 102.

[0070] In some embodiments of this example, the axial length of the cylindrical insert 111 along the core unit 102 is equal to the axial length of the cylindrical insert 112 along the core unit 102.

[0071] In adjacent core units 102, there is a third gap 113 between the end face of the first core unit 102 and the end face of the second core unit 102, and a fourth gap 114 between the end face of the cylindrical insert 111 of the first core unit 102 and the bottom face of the cylindrical insertion hole 112 of the second core unit 102.

[0072] In some embodiments of this example, a third spacer block 115 is provided in the third gap 113, and a fourth spacer block 116 is provided in the fourth gap 114;

[0073] In adjacent core units 102, one end of the third spacer 115 is pressed against the end face of the first core unit 102 along the axial direction of the core unit 102, and the other end of the third spacer 115 is pressed against the end face of the second core unit 102 along the axial direction of the core unit 102. One end of the fourth spacer 116 is pressed against the bottom surface of the cylindrical insertion hole 112 of the first core unit 102 along the axial direction of the core unit 102, and the other end of the fourth spacer 116 is pressed against the end face of the cylindrical insertion rod 111 of the second core unit 102 along the axial direction of the core unit 102.

[0074] The coefficient of linear expansion of the third spacer 115 is greater than that of the core unit 102, and the coefficient of linear expansion of the fourth spacer 116 is greater than that of the core unit 102.

[0075] The third spacer 115 and the fourth spacer 116 are elastic and are in a compressed state.

[0076] In some embodiments of this example, the protective layer 101 includes a shaping layer 117, which wraps around the wire core. The outer side of each wire core unit 102 is pressed against the inner side of the shaping layer 117. The shaping layer 117 is made of insulating material.

[0077] The protective layer 101 also includes a binding layer 118, which is made of steel wire. The binding layer 118 is spirally wound around the outside of the shaping layer 117, and the inner side of the binding layer 118 is pressed tightly against the shaping layer 117.

[0078] In the above-described embodiments of this example, the shaping layer 117 is made of polytetrafluoroethylene (PTFE) material, which has a certain degree of flexibility and hardness, and can stably maintain the relative position of adjacent core units 102. The wall thickness of the shaping layer 117 is set between 0.5 mm and 1 mm. Under the clamping action of the binding layer 118, the shaping layer 117 tightly wraps the core unit 102, preventing adjacent core units 102 from moving relative to each other axially or shifting relative to each other radially when the cable undergoes mechanical bending. The binding layer 118 is set as a spiral structure, which facilitates mechanical bending of the cable and improves the overall flexibility of the cable. Preferably, the binding layer 118 is made of spring steel material. The binding layer 118 is in a state of being stretched radially. Under its own elasticity, the binding layer 118 has a tendency to contract inward, thereby clamping the shaping layer 117.

[0079] In some embodiments of this example, the protective layer 101 further includes a shielding layer 119 and an insulating layer 120. The shielding layer 119 is made of a metallic material, and the insulating layer 120 is made of an insulating material. The shielding layer 119 is disposed to wrap the binding layer 118, and the insulating layer 120 is disposed to wrap the shielding layer 119.

[0080] In the embodiments of this application, in order to facilitate the distinction and description of the core unit 102, an adjacent core unit 102 refers to two adjacent core units 102, the first core unit 102 is one of the two core units 102, and the second core unit 102 is the other core unit 102.

[0081] In the description of the embodiments of this application, it should be noted that the terms "the above embodiments," "some embodiments," "the above implementation methods," "some implementation methods," "possible embodiments," or "possible implementation methods," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0082] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0083] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They can change accordingly depending on the orientation of the structure, and therefore should not be construed as a limitation on the embodiments of this application. Unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above," "on top," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0084] In the description of the embodiments of this application, it should be noted that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. Unless otherwise stated, "multiple" means two or more.

[0085] The above embodiments are merely explanations of this application and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to the implementation methods of this application without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A military light weight phase-stable cable comprising a jacket and a core, said jacket being wrapped around the core, characterized in that, The core comprises a plurality of core units, each of the core units is arranged in sequence along the axial direction, the adjacent core units are adapted to move relative to each other along the axial direction, and the adjacent core units are in contact with each other, the core units are made of a conductor material; The adjacent core units are connected in sliding along the axial direction; The shape of the cross section of the core unit is circular; One end of the core unit is integrally connected with a first semicylindrical protrusion arranged along the axial direction of the core unit, the other end of the core unit is integrally connected with a second semicylindrical protrusion arranged along the axial direction of the core unit, the diameter of the first semicylindrical protrusion is equal to the diameter of the core unit, and the diameter of the second semicylindrical protrusion is equal to the diameter of the core unit; One end of the core unit is provided with a first semicylindrical notch arranged along the axial direction of the core unit, the other end of the core unit is provided with a second semicylindrical notch arranged along the axial direction of the core unit, the diameter of the first semicylindrical notch is equal to the diameter of the core unit, and the diameter of the second semicylindrical notch is equal to the diameter of the core unit; The central axis of the core unit, the central axis of the first semicylindrical protrusion, the central axis of the second semicylindrical protrusion, the central axis of the first semicylindrical notch, and the central axis of the second semicylindrical notch are located on the same straight line; The first semicylindrical protrusion and the first semicylindrical notch are located at one end of the core unit, and the second semicylindrical protrusion and the second semicylindrical notch are located at the other end of the core unit; In the adjacent core units, the first semicylindrical protrusion of the first core unit is inserted into the second semicylindrical notch of the second core unit along the axial direction of the core unit, the second semicylindrical protrusion of the second core unit is inserted into the first semicylindrical notch of the first core unit along the axial direction of the core unit, the first semicylindrical protrusion of the first core unit is in contact with the second semicylindrical protrusion of the second core unit, and the first semicylindrical protrusion of the first core unit and the second semicylindrical protrusion of the second core unit are connected in sliding along the axial direction of the core unit; The axial length of the first semicylindrical protrusion along the core unit is equal to the axial length of the second semicylindrical protrusion along the core unit; In the adjacent core units, there is a first gap between the end face of the first semicylindrical protrusion of the first core unit and the end face of the second core unit, and there is a second gap between the end face of the second semicylindrical protrusion of the second core unit and the end face of the first core unit; The first gap is provided with a first spacing block, and the second gap is provided with a second spacing block; One end of the first spacer block is tightly pressed against the end surface of the first semi-cylindrical protrusion of the first wire core unit along the axial direction of the wire core unit, and the other end of the first spacer block is tightly pressed against the end surface of the second wire core unit along the axial direction of the wire core unit; One end of the second spacer block is tightly pressed against the end surface of the second semi-cylindrical protrusion of the second wire core unit along the axial direction of the wire core unit, and the other end of the second spacer block is tightly pressed against the end surface of the first wire core unit along the axial direction of the wire core unit; The linear expansion coefficient of the first spacer block is greater than the linear expansion coefficient of the wire core unit, and the linear expansion coefficient of the second spacer block is less than the linear expansion coefficient of the wire core unit; The first spacer block and the second spacer block are elastic, and the first spacer block and the second spacer block are in a compressed state.

2. A military light weight phase-stable cable comprising a jacket and a core, said jacket being wrapped around the core, characterized in that, The wire core comprises a plurality of wire core units arranged in sequence along the axial direction, and the wire core units are adapted to move relative to each other along the axial direction; The wire core units are connected in sliding mode along the axial direction; The cross section of the wire core unit is circular; A cylindrical plug is integrally connected to the center of the end surface of one end of the wire core unit, and the cylindrical plug is arranged along the axial direction of the wire core unit; a cylindrical socket is arranged at the center of the other end of the wire core unit, and the cylindrical socket is arranged along the axial direction of the wire core unit; the diameter of the cylindrical plug is less than the diameter of the wire core unit, and the diameter of the cylindrical socket is equal to the diameter of the cylindrical plug; In the adjacent wire core units, the cylindrical plug of the first wire core unit is inserted into the cylindrical socket of the second wire core unit along the axial direction of the wire core unit, the outer surface of the cylindrical plug of the first wire core unit is in contact with the inner surface of the cylindrical socket of the second wire core unit, and the outer surface of the cylindrical plug of the first wire core unit is connected to the inner surface of the cylindrical socket of the second wire core unit in sliding mode along the axial direction of the wire core unit; The axial length of the cylindrical plug along the wire core unit is equal to the axial length of the cylindrical socket along the wire core unit; In the adjacent wire core units, the end surface of the first wire core unit and the end surface of the second wire core unit have a third gap, and the end surface of the cylindrical plug of the first wire core unit and the bottom surface of the cylindrical socket of the second wire core unit have a fourth gap; The third gap is provided with a third spacer block, and the fourth gap is provided with a fourth spacer block; In the adjacent wire core units, one end of the third spacer block is in press-fit with the end face of the first wire core unit along the axial direction of the wire core unit, the other end of the third spacer block is in press-fit with the end face of the second wire core unit along the axial direction of the wire core unit, one end of the fourth spacer block is in press-fit with the bottom face of the cylindrical insertion hole of the first wire core unit along the axial direction of the wire core unit, and the other end of the fourth spacer block is in press-fit with the end face of the cylindrical insertion rod of the second wire core unit along the axial direction of the wire core unit; The linear expansion coefficient of the third spacer block is greater than the linear expansion coefficient of the wire core unit, and the linear expansion coefficient of the fourth spacer block is greater than the linear expansion coefficient of the wire core unit; The third spacer block and the fourth spacer block are elastic, and the third spacer block and the fourth spacer block are in a compressed state.

3. The military light-weight, stable phase cable according to any one of claims 1 to 2, characterized in that, The protective layer comprises a shaping layer, the shaping layer wraps the wire core arrangement, the outer side face of each wire core unit is in press-fit with the inner side face of the shaping layer, and the shaping layer is made of insulating material; The protective layer further comprises a bundling layer, the bundling layer is made of steel wire, the bundling layer is spirally wound outside the shaping layer, and the inner side face of the bundling layer is in press-fit with the shaping layer.

4. The military light-weight, stable phase cable of claim 3, wherein, The protective layer further comprises a shielding layer and an insulating layer, the shielding layer is made of metal material, the insulating layer is made of insulating material, the shielding layer wraps the bundling layer, and the insulating layer wraps the shielding layer.

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