Cable connection structure and high voltage cable assembly

Abstract

The application discloses a cable connecting structure and a high-voltage cable assembly. The cable connecting structure comprises a cable and a connecting structure. The cable comprises a cable body and a metal sheath, and the metal sheath is arranged on the outer circumferential side of the cable body. The connecting structure comprises a plurality of conductive contact plates and a fastener. The plurality of conductive contact plates are arranged along the circumference of the cable. The fastener connects the plurality of conductive contact plates, so that the plurality of conductive contact plates enclose a mounting cavity. The cable is detachably arranged in the mounting cavity. Each conductive contact plate is provided with a connecting end for connecting with a ground wire, and is also provided with a contact point abutting against the outer wall of the metal sheath. The plurality of conductive contact plates are connected by the fastener. The contact point on the conductive contact plate abuts against the outer wall of the metal sheath. The connecting end of the conductive contact plate is connected with the ground wire to connect an accessory fitting. The cable is detachably arranged in the mounting cavity enclosed by the plurality of conductive contact plates. The mounting is simple, and stable electrical connection between the metal sheath and the accessory fitting can be ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power cable, in particular to a cable connecting structure and a high-voltage cable assembly. BACKGROUND

[0002] The power cable accessory is a product connecting the cable and the power transmission and distribution line and the related power distribution device, generally refers to the intermediate connection and terminal connection of various cables in the cable line, which together with the cable forms the power transmission network. In the related art, the lead sealing process is usually used to ensure the electrical connection between the cable metal sheath and the cable accessory fitting, however, the space for operation is relatively small, and the lead sealing process needs to be operated by fire, which has certain danger; at the same time, the lead sealing operation has high requirements for the technical ability of the installer, and if the operation ability is insufficient, the cable is easy to be damaged by scalding when the installer melts the welding rod for sealing; at the same time, the lead sealing process needs many materials, and the cost of the lead sealing process is also high. SUMMARY

[0003] The technical problem to be solved by the present application is to ensure the stable electrical connection between the cable metal sheath and the cable accessory fitting, and the lead sealing process is used in the related art, the space for operation is small, and the lead sealing process needs to be operated by fire, which is easy to cause the cable to be scalded, and thus a structure is provided which does not need to be operated by fire at the installation site, and is convenient and simple to install, and can ensure that the cable metal sheath and the cable accessory fitting have stable electrical connection.

[0004] To achieve the above-mentioned purpose, the present application provides a cable connecting structure, which comprises:

[0005] a cable, the cable comprising a cable body and a metal sheath, the metal sheath being sleeved on the outer circumferential side of the cable body; and

[0006] a connecting structure, the connecting structure comprising a plurality of conductive contact plates and a fastener, the plurality of conductive contact plates being arranged along the circumference of the cable, the fastener connecting the plurality of conductive contact plates, so that the plurality of conductive contact plates enclose a mounting cavity, and the cable is detachably arranged in the mounting cavity; each conductive contact plate is provided with a connecting end for connecting with a ground wire, and each conductive contact plate is further provided with a contact point on the side facing the mounting cavity, and the contact point abuts against the outer wall of the metal sheath.

[0007] In an embodiment of the present application, the fastener comprises a constant force elastic member, each conductive contact plate is provided with a receiving groove on the side away from the mounting cavity, and the constant force elastic member is detachably received in the plurality of receiving grooves.

[0008] In an embodiment of the present application, the fastener further comprises elastic coils, each of the conductive contact plates is provided with oppositely arranged upper end and lower end, the upper end and the lower end are provided with through holes penetrating the left and right surfaces thereof, the elastic coils are sequentially connected in series by penetrating the plurality of conductive contact plates, and the plurality of conductive contact plates are enclosed to form the mounting cavity.

[0009] In an embodiment of the present application, the number of the elastic coils is one, and one elastic coil sequentially connects the plurality of conductive contact plates in series by penetrating the plurality of through holes.

[0010] Alternatively, the number of the elastic coils is multiple, one elastic coil is arranged between two adjacent conductive contact plates, the adjacent elastic coils are sleeved, and the plurality of elastic coils sequentially connect the plurality of conductive contact plates in series by penetrating the through holes.

[0011] In an embodiment of the present application, the upper end and / or the lower end is provided with a foolproof threaded hole, and the connecting structure further comprises a bolt penetrating the foolproof threaded hole to form the connecting end.

[0012] In an embodiment of the present application, each of the conductive contact plates is provided with at least two spaced apart contact points along the axial direction of the mounting cavity, the outer wall of the metal sheath is provided with a spiral groove, the spiral groove spirally extends along the enclosing direction of the plurality of conductive contact plates, and each of the contact points is clamped in the spiral groove.

[0013] In an embodiment of the present application, the distance between two contact points on each of the conductive contact plates is defined as d, the pitch between two adjacent spiral grooves extending along the enclosing direction of the conductive contact plates is defined as p, and the relationship d=2p is satisfied.

[0014] The present application further provides a high-voltage cable assembly comprising the cable connecting structure, the accessory fitting and the ground wire as described above, the accessory fitting is sleeved on the outer periphery of the cable connecting structure, the accessory fitting and the cable outer wall of the cable connecting structure enclose to form a containing cavity, and the connecting structure of the cable connecting structure is located in the containing cavity; the ground wire is arranged in the containing cavity, one end of the ground wire is connected with the accessory fitting, and the other end of the ground wire is connected with the connecting end of the cable connecting structure.

[0015] In an embodiment of the present application, the ground wire is a flexible cable, and the flexible cable is foldably arranged in the containing cavity.

[0016] In an embodiment of the present application, the high-voltage cable assembly further comprises:

[0017] a cable outer sheath, the cable outer sheath is sleeved on the outer wall of the cable and is spaced apart from the connecting structure, and the accessory fitting is sleeved on the outer periphery of part of the cable outer sheath;

[0018] a waterproof tape provided at a connection between the accessory fitting and the cable outer sheath; and

[0019] a heat shrink tube provided around an outer circumferential side of the waterproof tape.

[0020] The cable connection structure in the application includes a connection structure and a cable, the cable includes a cable body and a metal sheath, the metal sheath is provided around the outer circumferential side of the cable body, the metal sheath can protect the cable body, and can also prevent dust and other substances from damaging the cable body. The connection structure includes a plurality of conductive contact plates and a fastener, the plurality of conductive contact plates are arranged along the circumference of the cable, and the fastener connects the plurality of conductive contact plates to maintain the structural stability thereof; the plurality of conductive contact plates enclose a mounting cavity, and the cable is detachably provided in the mounting cavity, which facilitates disassembly and assembly, eliminates the need for fire operation, reduces the disassembly and assembly time of the operator and the danger during installation, and improves the disassembly and assembly efficiency. The connection end on each conductive contact plate is used for connecting with a ground wire, thereby connecting the cable accessory fitting, each conductive contact plate is provided with a contact point on the side facing the mounting cavity, the contact point abuts against the outer wall of the metal sheath, the stable electrical connection between the conductive contact plate and the cable is maintained, and the stable electrical connection between the cable metal sheath and the cable accessory fitting is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can also be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0022] Figure 1 is a sectional view of an embodiment of the high-voltage cable assembly of the present application;

[0023] Figure 2 is a structural schematic view of an embodiment of the cable connection structure of the present application.

[0024] DETAILED DESCRIPTION

[0025]

[0026]

[0027] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0028] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0029] It should be noted that all the direction indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the direction indications also change accordingly.

[0030] In addition, the descriptions of “first”, “second” and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as “first”, “second” can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of a person of ordinary skill in the art, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0031] With reference to Figure 1 and Figure 2 , the present application proposes a cable connection structure 100, the cable connection structure 100 includes a cable 13 and a connection structure 11, the cable 13 includes a cable 13 body and a metal sheath 133, the metal sheath 133 is sleeved on the outer circumferential side of the cable 13 body; the connection structure 11 includes a plurality of conductive contact plates 111 and a fastener 115, the plurality of conductive contact plates 111 are arranged along the circumference of the cable 13, the fastener 115 connects the plurality of conductive contact plates 111, so that the plurality of conductive contact plates 111 enclose to form a mounting cavity 15, so that the cable 13 is detachably arranged in the mounting cavity 15; one end of each conductive contact plate 111 is provided with a connection end 1115a, the connection end 1115a is used for connecting with a ground wire 300, and one side of each conductive contact plate 111 towards the mounting cavity 15 is also provided with a contact point 1111, the contact point 1111 abuts against the outer wall of the metal sheath 133.

[0032] The cable connection structure 100 in the present application comprises a connection structure 11 and a cable 13, the cable 13 comprises a cable 13 body and a metal sheath 133, the metal sheath 133 is sleeved on the outer circumferential side of the cable 13 body, the metal sheath 133 can play a protective role on the cable 13 body, and can also prevent dust and other substances from damaging the cable 13 body. The connection structure 11 comprises a plurality of conductive contact plates 111 and a fastener 115, the plurality of conductive contact plates 111 are arranged along the circumference of the cable 13, and the fastener 115 connects the plurality of conductive contact plates 111 to maintain the structural stability thereof; the plurality of conductive contact plates 111 enclose a mounting cavity 15, and the cable 13 is detachably arranged in the mounting cavity 15, which facilitates disassembly and assembly, eliminates the need for fire operation, reduces the disassembly and assembly time of the operator and the danger during installation, and improves the disassembly and assembly efficiency. The connecting end 1115a on each conductive contact plate 111 is used for connecting with the ground wire 300, and then connecting with the cable accessory fitting, and each conductive contact plate 111 is provided with a contact point 1111 on the side facing the mounting cavity 15, the contact point 1111 abuts against the outer wall of the metal sheath 133, so that the stable electrical connection between the conductive contact plate 111 and the cable 13 is maintained, thereby ensuring the stable electrical connection between the cable metal sheath and the cable accessory fitting.

[0033] Referring to Figure 1 and Figure 2 In an embodiment of the present application, the fastener 115 comprises a constant-force elastic member 117, and each conductive contact plate 111 is provided with a receiving groove 1119 on the side away from the mounting cavity 15, and the constant-force elastic member 117 is detachably accommodated in the plurality of receiving grooves 1119.

[0034] By arranging the receiving groove 1119, the connection between the conductive contact plate 111 and the cable 13 can be more stable. The receiving groove 1119 is arranged on the side of the conductive contact plate 111 away from the mounting cavity 15, so that the constant-force elastic member 117 can be better accommodated in the receiving groove 1119; the constant-force elastic member 117 is detachably accommodated in the plurality of receiving grooves 1119, so that the contact point 1111 can be more stably clamped on the cable 13, and the stable electrical connection between the conductive contact plate 111 and the cable 13 is ensured. The number of the constant-force elastic members 117 is at least two, and the constant-force elastic members 117 are arranged along the circumference of the plurality of conductive contact plates 111 and are sleeved in the receiving grooves 1119, so that the force on the conductive contact plate 111 is more balanced, the connection between the conductive contact plate 111 and the cable 13 is more stable, and the connection between the constant-force elastic member 117 and the conductive contact plate 111 is detachable, so that the connection structure 11 is more convenient to disassemble and assemble, and the disassembly and assembly efficiency is improved. In the present embodiment, the constant-force elastic member 117 can be a constant-force spring.

[0035] Referring to Figure 1 and Figure 2In an embodiment of the present application, the fastener 115 further comprises elastic coils 113, each of the conductive contact plates 111 is provided with oppositely arranged upper end 1113 and lower end 1115, the upper end 1113 and the lower end 1115 are provided with through holes 1117 penetrating the left and right surfaces thereof, the elastic coils 113 are sequentially connected in series through the plurality of conductive contact plates 111, and the plurality of conductive contact plates 111 are enclosed to form the mounting cavity 15.

[0036] The upper end 1113 and the lower end 1115 of the conductive contact plate 111 can improve the overall aesthetics of the connecting structure 11, and can make the elastic coil 113 more convenient when connected in series. Since the upper end 1113 and the lower end 1115 are both provided with through holes 1117 penetrating the left and right surfaces thereof, the elastic coil 113 can pass through the through holes 1117, sequentially connect the plurality of conductive contact plates 111 in series, and enclose the plurality of conductive contact plates 111 to form the mounting cavity 15, which can ensure the structural stability of the conductive contact plate 111 when connected. At the same time, the plurality of conductive contact plates 111 can be simultaneously abutted against the metal sheath 133, which is more convenient during abutment. In order to maintain the stability of the connection between the elastic coil 113 and the conductive contact plate 111, the upper end 1113 and the lower end 1115 of the conductive contact plate 111 are both provided with at least two first threaded holes, and a fastening bolt is used to pass through the first threaded holes to fix the elastic coil 113, thereby maintaining the stability of the connection between the elastic coil 113 and the conductive contact plate 111, and ensuring the spacing of the plurality of conductive contact plates 111 during installation. By providing the elastic coil 113 and the constant force elastic member 117, the plurality of conductive contact plates 111 can be stably connected by the fastener 115, and the abutment of the plurality of conductive contact plates 111 against the metal sheath 133 can be more stable.

[0037] Referring to Figure 1 and Figure 2 In an embodiment of the present application, the number of elastic coils 113 is one, and one elastic coil 113 sequentially connects the plurality of conductive contact plates 111 in series through the plurality of through holes 1117. In this embodiment, the elastic coil 113 is formed into a closed-end annular shape by an elastic wire, and it can be understood that one elastic coil 113 sequentially passes through the through holes 1117 of the plurality of conductive contact plates 111 and connects the plurality of conductive contact plates 111 in series, thereby ensuring the structural stability of the plurality of conductive contact plates 111 when connected.

[0038] Preferably, the number of elastic coils 113 is at least two, and the at least two elastic coils 113 are arranged in a longitudinal direction of the cable 13. Each of the elastic coils 113 passes through the through holes 1117 of the plurality of conductive contact plates 111.

[0039] Referring to Figure 1 and Figure 2In other embodiments of the present application, the number of elastic coils 113 is multiple, one elastic coil 113 is arranged between two adjacent conductive contact plates 111, the adjacent two elastic coils 113 are sleeved, and the multiple elastic coils 113 pass through the through hole 1117 to sequentially connect the multiple conductive contact plates 111. In this embodiment, multiple elastic coils 113 are used, the adjacent two elastic coils 113 can be connected in a sleeved or plugged manner, or a connecting sleeve can be used for connection, or other stable connection methods can be used; one elastic coil 113 is arranged between two adjacent conductive contact plates 111, and the multiple elastic coils 113 pass through the through hole 1117 to sequentially connect the multiple conductive contact plates 111, thereby ensuring the structural stability of the multiple conductive contact plates 111 when connected.

[0040] It can be understood that the material of the elastic coil 113 in the present application can be silicone with conductive properties, or other materials with conductive and elastic properties, which are not limited herein.

[0041] Referring to Figure 1 and Figure 2 In an embodiment of the present application, the upper end portion 1113 and / or the lower end portion 1115 is provided with an anti-stupid threaded hole, and the connecting structure 11 further comprises a bolt, which passes through the anti-stupid threaded hole to form a connecting end 1115a. The connecting end 1115a is used to connect the ground wire 300, thereby maintaining stable electrical connection between the conductive contact plate 111 and the ground wire 300. One end of the ground wire 300 is provided with a crimping terminal, which can be sleeved on the connecting end 1115a. When the cable 13 falls, the ground wire 300 and the cable 13 can still maintain stable connection.

[0042] Preferably, the upper end portion 1113 and the lower end portion 1115 are both provided with anti-stupid threaded holes, so that during installation, it is not necessary to distinguish the upper end portion 1113 and the lower end portion 1115, thereby reducing the installation difficulty, saving the installation time, and improving the installation efficiency.

[0043] Referring to Figure 1 and Figure 2 In an embodiment of the present application, each conductive contact plate 111 is provided with at least two spaced-apart contact points 1111 along the axial direction of the mounting cavity 15; the outer wall of the metal sheath 133 is provided with a spiral groove 1331, the spiral groove 1331 spirally extends along the surrounding direction of the multiple conductive contact plates 111, and each contact point 1111 is clamped in the spiral groove 1331.

[0044] The contact 1111 can abut against the outer wall of the metal sheath 133 to form an electrical circuit, thereby ensuring stable electrical connection between the conductive contact plate 111 and the cable 13. Two contact points 1111 of each conductive contact plate 111 are arranged along the axial direction of the mounting cavity 15, which can be more stable when abutting against the metal sheath 133. The elastic coil 113 is fixed by the fastening bolt passing through the first threaded hole, which ensures the spacing distance when the plurality of conductive contact plates 111 are connected with the cable 13. The two contact points 1111 of each conductive contact plate 111 are spaced apart by two intervals, and the interval between the adjacent two contact points 1111 of the adjacent two conductive contact plates 111 is the same, thereby improving the stress between the cable 13 and the plurality of conductive contact plates 111 when clamped, and maintaining a stable connection relationship, thereby ensuring stable electrical connection between the conductive contact plate 111 and the cable 13, and improving the overall aesthetics of the cable connection structure 100. The outer wall of the metal sheath 133 is provided with a spiral groove 1331 that can abut against the contact point 1111, so that the contact point 1111 does not directly contact the cable body 131, thereby reducing the loss of the cable body 131. The extension direction of the spiral groove 1331 is consistent with the enclosing direction of the plurality of conductive contact plates 111, which can facilitate the installation between the contact point 1111 and the spiral groove 1331, further maintain the stable electrical connection between the conductive contact plate 111 and the cable 13, reduce the installation difficulty, and improve the installation efficiency.

[0045] With reference to Figure 1 and Figure 2 In an embodiment of the present application, the distance between the two contact points 1111 on each conductive contact plate 111 is defined as d, and the pitch between the two adjacent spiral grooves 1331 extending along the enclosing direction of the conductive contact plate 111 is defined as p, which satisfies the relationship: d = 2p.

[0046] The distance between the two contact points 1111 on each conductive contact plate 111 is twice the pitch between the two adjacent spiral grooves 1331 extending along the enclosing direction of the conductive contact plate 111, thereby ensuring the stability when the contact point 1111 is clamped in the spiral groove 1331. When the relationship between the distances satisfies the above relationship, the electrical connection between the conductive contact plate 111 and the cable 13 can be more stable, and the structural stability when each contact point 1111 is connected with the spiral groove 1331 is also ensured.

[0047] With reference to Figure 1The application further provides a high-voltage cable assembly 1000, which comprises the cable connecting structure 100, the accessory fitting 200 and the ground wire 300 as described above. The cable connecting structure 100 has the structure as described above. The high-voltage cable assembly 1000 has all the beneficial effects of the technical solutions of the above-mentioned embodiments. The accessory fitting 200 is sleeved on the outer periphery of the cable connecting structure 100, and the accessory fitting 200 and the outer wall of the cable 13 of the cable connecting structure 100 enclose a containing cavity 201, and the connecting structure 11 of the cable connecting structure 100 is located in the containing cavity 201. The ground wire 300 is arranged in the containing cavity 201, one end of the ground wire 300 is connected with the accessory fitting 200, and the other end of the ground wire 300 is connected with the connecting end 1115a of the cable connecting structure 100. One end of the ground wire 300 can be welded on the accessory fitting 200, and the other end of the ground wire 300 is sleeved on the connecting end 1115a of the cable connecting structure 100, so that the conductive contact plate 111 and the cable 13 and the accessory metal have stable electrical connection. The containing cavity 201 is enclosed by the accessory fitting 200 and the outer wall of the cable 13, and the connecting structure 11 can be accommodated in the containing cavity 201, thereby protecting the connecting structure 11. Since the ground wire 300 is a flexible cable, it can be folded and placed, and the connection between the ground wire 300 and the connecting end 1115a is not affected when the cable 13 falls, thereby maintaining the stable electrical connection between the accessory fitting 200 and the conductive contact plate 111, that is, the stable electrical connection between the accessory metal and the cable 13 of the cable connecting structure 100.

[0048] When the high-voltage cable assembly 1000 is installed, the accessory fitting 200 is sleeved into the cable 13, the connecting structure 11 which is pre-connected and fixed is sleeved into the cable 13, the fastener 115 is installed, and the ground wire 300 is fastened.

[0049] Referring to Figure 1 Further, in an embodiment of the application, the ground wire 300 is a flexible cable, and the flexible cable can be folded and arranged in the containing cavity 201.

[0050] Since the ground wire 300 in the embodiment is a flexible cable and can be folded and arranged in the containing cavity 201, the stable connection between the ground wire 300 and the connecting end 1115a can be maintained when the cable 13 falls or moves, thereby maintaining the stable electrical connection between the accessory fitting 200 and the conductive contact plate 111, and maintaining the stable electrical connection between the accessory fitting 200 and the cable 13 in the cable connecting structure 100.

[0051] Referring to Figure 1In an embodiment of the present application, the high-voltage cable assembly 1000 further comprises a cable outer sheath 400, a waterproof tape 500 and a heat shrink tube 600, the cable outer sheath 400 is sleeved on the outer wall of the cable 13 and is spaced from the connecting structure 11, and the accessory fitting 200 is sleeved on the outer circumferential side of part of the cable outer sheath 400; the waterproof tape 500 is arranged at the connection between the accessory fitting 200 and the cable outer sheath 400, and the heat shrink tube 600 is sleeved on the outer circumferential side of the waterproof tape 500.

[0052] The cable outer sheath 400 can insulate the cable 13 from damage and meet various use conditions and environmental requirements. The cable outer sheath 400 is sleeved on the outer wall of the cable 13 and is spaced from the connecting structure 11, so that there is more space between the connecting structure 11 and the accessory fitting 200. By arranging the cable outer sheath 400, the invasion of external corrosive media can be resisted, the contact between the metal sheath 133 and the external corrosive media can be prevented, and the service life of the cable 13 can be prolonged; at the same time, the cable 13 can also be prevented from being mechanically damaged during operation and can withstand certain external forces.

[0053] The waterproof tape 500 is used to seal the connection between the accessory fitting 200 and the cable outer sheath 400, so as to avoid the entry of water into the high-voltage cable assembly 1000 during operation and affect the operation. When water enters the waterproof tape 500, it will expand rapidly to prevent water from spreading along the axial direction of the cable outer sheath 400, thereby achieving the purpose of axial waterproofing of the high-voltage cable assembly 1000.

[0054] The waterproof tape 500 is arranged at the connection between the accessory fitting 200 and the cable outer sheath 400, and the heat shrink tube 600 covers and fixes the waterproof tape 500, which can also play an insulating role and maintain the stability of the high-voltage cable assembly 1000 during operation.

[0055] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made according to the contents of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A cable connection structure, characterized by comprising: The cable connection structure comprises: a cable comprising a cable body and a metal sheath, the metal sheath being sleeved on the outer circumferential side of the cable body; and a connection structure comprising a plurality of conductive contact plates arranged in the circumferential direction of the cable and a fastener, the fastener connecting the plurality of conductive contact plates so that the plurality of conductive contact plates enclose a mounting cavity in which the cable is detachably arranged; each of the conductive contact plates is provided with a connection end for connecting with a ground wire, and a contact point is further provided on the side of each of the conductive contact plates facing the mounting cavity, the contact point abutting against the outer wall of the metal sheath; wherein the fastener comprises a constant force elastic member and an elastic coil, each of the conductive contact plates is provided with oppositely arranged upper and lower end portions, the upper and lower end portions are provided with through holes penetrating the left and right surfaces thereof, the elastic coil is sequentially connected in series through the plurality of conductive contact plates so that the plurality of conductive contact plates enclose the mounting cavity; and each of the conductive contact plates is provided with a receiving groove on the side thereof away from the mounting cavity, and the constant force elastic member is detachably arranged in the plurality of receiving grooves.

2. The cable connection structure of claim 1, wherein The number of the elastic coils is one, and one elastic coil sequentially connects in series through the plurality of through holes and the plurality of conductive contact plates. Alternatively, the number of the elastic coils is a plurality, one elastic coil is arranged between adjacent two conductive contact plates, adjacent two elastic coils are sleeved, and a plurality of elastic coils sequentially connect in series through the plurality of through holes and the plurality of conductive contact plates.

3. The cable connection structure of claim 1, wherein The upper and / or lower end portions are provided with fool-proof threaded holes, and the connection structure further comprises bolts which pass through the fool-proof threaded holes to form the connection ends.

4. The cable connection structure according to any one of claims 1 to 3, wherein Each of the conductive contact plates is provided with at least two spaced apart contact points in the axial direction of the mounting cavity; the outer wall of the metal sheath is provided with a spiral groove which spirally extends in the enclosing direction of the plurality of conductive contact plates, and each of the contact points is clamped in the spiral groove.

5. The cable connection structure of claim 4, wherein The distance between the two contact points on each of the conductive contact plates is defined as d, and the pitch between two adjacent spiral grooves extending in the enclosing direction of the conductive contact plates is defined as p, and the relationship d=2p is satisfied.

6. A high-voltage cable assembly, comprising: the cable connection structure according to any one of claims 1 to 5; an accessory fitting sleeved on the outer circumference of the cable connection structure, and enclosing a receiving cavity with the cable outer wall of the cable connection structure, the connection structure of the cable connection structure being located in the receiving cavity; and a ground wire arranged in the receiving cavity, one end of the ground wire being connected with the accessory fitting, and the other end of the ground wire being connected with the connection end of the cable connection structure. The ground wire is a flexible cable which is foldably arranged in the receiving cavity.

7. The high voltage cable assembly of claim 6, wherein, The high-voltage cable assembly further comprises:

8. The high voltage cable assembly of claim 7, wherein, a cable outer sheath sleeved on the outer wall of the cable and spaced apart from the connection structure, and the accessory fitting is sleeved on the outer circumferential side of part of the cable outer sheath. ​ A waterproof tape is provided at a connection between the accessory fitting and the cable outer cover; and A heat shrink tube is fitted to an outer peripheral side of the waterproof tape.

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