Power cable intermediate joint

Abstract

The present invention relates to an intermediate joint of a power cable, comprising: a pair of symmetrically arranged cable connection components and an intermediate connection sleeve, the cable connection component comprising a conductor connection sleeve for fixing a peeled portion of one end of a cable, and a conductor connector suitable for matching with the conductor connection sleeve; the intermediate connection sleeve comprises a pair of connection ends suitable for one-to-one corresponding connection with the conductor connection sleeves respectively included in the pair of cable connection components. The intermediate joint of the power cable of the present invention can improve the convenience and efficiency of assembly between the components of the power cable.

Description

Technical Field

[0001] The invention relates to the technical field of cable connection, in particular to an intermediate joint of a power cable. Background Art

[0002] The assembly method between the components of the power cable intermediate joint not only directly affects the assembly efficiency of the overall power cable intermediate joint, but also directly affects the assembly requirements of the power cable intermediate joint. For the power cable intermediate joint in some cases, part of its internal structure needs to be assembled on site. Considering the limitations of assembly conditions during on-site assembly, it is particularly necessary to consider the convenience of assembly between the components. Summary of the invention

[0003] The object of the present invention is to provide a power cable intermediate joint to solve the technical problem of improving the convenience and efficiency of assembling the components of the power cable intermediate joint.

[0004] The power cable intermediate joint of the present invention is realized as follows:

[0005] A power cable intermediate joint, comprising:

[0006] A pair of symmetrically arranged cable connection assemblies, the cable connection assemblies comprising a conductor connection sleeve for fixing a peeled portion of one end of the cable, and a conductor connector suitable for matching with the conductor connection sleeve;

[0007] An intermediate connecting sleeve, wherein the intermediate connecting sleeve comprises a pair of connecting ends suitable for one-to-one connection with a pair of conductor connecting sleeves respectively included in the cable connecting assembly.

[0008] In a preferred embodiment of the present invention, the conductor connector comprises:

[0009] An annular connecting sleeve, wherein the annular connecting sleeve has a central cavity extending therethrough along its axial direction;

[0010] At least one pair of recessed grooves, wherein at least one pair of recessed grooves are recessed and formed at intervals on the outer wall of the annular connecting sleeve;

[0011] At least one pair of lock buckles, at least one pair of the lock buckles are embedded in the recessed grooves in a one-to-one correspondence; the lock buckles include an assembly portion suitable for being embedded in the recessed grooves, and a lock hook connected to the assembly portion.

[0012] In a preferred embodiment of the present invention, a notch is provided on the side wall of the annular connecting sleeve, through which the locking hook passes and extends into the central cavity.

[0013] In a preferred embodiment of the present invention, the locking hook comprises a connecting portion connected to the assembly portion, and a convex hook bent and connected to an end of the connecting portion away from the assembly portion;

[0014] The convex hook protrudes relative to the connecting portion so that the convex hook and the connecting portion form an L-shaped structure.

[0015] In a preferred embodiment of the present invention, the conductor connecting sleeve comprises a body and a stop shaft integrally connected to the body and suitable for being embedded in a central cavity in the conductor connecting piece; and

[0016] The connecting end is sleeved and fixed to the outer wall of the body.

[0017] In a preferred embodiment of the present invention, at least one pair of bosses are convexly provided on the circumferential side wall of the retaining shaft and are suitable for one-to-one correspondence and matching with at least one pair of locking buckles.

[0018] In a preferred embodiment of the present invention, the power cable intermediate joint further comprises a stress cone sleeved on the outer skin of the cable near the conductor connection sleeve, and a cone support assembly connected to the end of the stress cone away from the conductor connection sleeve; wherein

[0019] The cone support assembly comprises a supporting portion connected to the stress cone, a plurality of compression springs abutting against the supporting portion, and a bottom support abutting against one end of the plurality of compression springs away from the supporting portion.

[0020] In a preferred embodiment of the present invention, the supporting portion and the bottom bracket are provided with a connecting hole which is in communication with the inner hole of the compression spring; and

[0021] The connecting holes respectively located on the supporting part and the bottom bracket are suitable for the compression bolts to pass through so as to realize the compression matching between the bottom bracket, the compression spring and the supporting part.

[0022] In a preferred embodiment of the present invention, the power cable intermediate joint further comprises a covering sleeve suitable for covering the outer sides of the stress cones respectively included in the intermediate connection sleeve and the pair of cable connection components; and

[0023] The power cable intermediate joint also includes a cone support protective cover which abuts against the clamping bolt and is sleeved on the cable outer sheath.

[0024] In a preferred embodiment of the present invention, the cone support protective cover includes a base covering the outside of the cone support assembly, an outward-turned portion connected to an outward-turned fold at one axial end of the base, and an inward-turned portion connected to an inward-turned fold at the other axial end of the base; wherein

[0025] The outward-turned portion is folded in a direction away from the cable, and the inward-turned portion is folded in a direction toward the cable;

[0026] The outward-turned portion is suitable for being matched and fixed with one axial end of the cone support protective cover; and

[0027] The inwardly turned portion is suitable for abutting against the clamping bolt;

[0028] One end of the inwardly turned portion away from the clamping bolt is matched with a metal shielding connecting ring which is sleeved on the outer sheath of the cable.

[0029] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: in the practical power cable intermediate joint, the cable connection assembly fixes one end of the cable, and then the intermediate connection sleeve is used to realize the transition connection between the cables respectively fixed by the cable connection assembly. In this way, the overall power cable intermediate joint can be assembled step by step to complete the assembly of different module structures.

[0030] Furthermore, the conductor connector includes a lock, which includes an assembly portion suitable for being embedded in the recessed groove of the annular connecting sleeve, and a locking hook connected to the assembly portion. The present invention can achieve limit locking of the anti-retraction shaft of the conductor connecting sleeve through the locking hook. During this process, the conductor connector and the conductor connecting sleeve can be separated and matched only through the matching and separation between the locking hook and the anti-retraction shaft. During this process, it is only necessary to directly toggle the lock, and there is no need to use extra tools to operate the lock. The overall operation is convenient and efficient, and can be applied to direct assembly operations of intermediate joints of power cables in factories or on-site, with a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Figure 1 The three-dimensional structure diagram of the power cable intermediate joint provided by the present invention is shown

[0033] Figure 2 A schematic diagram of the internal structure of the power cable intermediate joint provided by the present invention from a first viewing angle is shown;

[0034] Figure 3 yes Figure 2 A magnified view of the K part;

[0035] Figure 4 The schematic diagram shows the partial structure of the intermediate joint of the power cable provided by the present invention. Figure 1 ;

[0036] Figure 5 A schematic diagram of the internal structure of the power cable intermediate joint provided by the present invention from a second viewing angle is shown;

[0037] Figure 6 The schematic diagram shows the partial structure of the intermediate joint of the power cable provided by the present invention. Figure 2 ;

[0038] Figure 7 A schematic structural diagram of a conductor connector of a power cable intermediate joint provided by the present invention from a first viewing angle is shown;

[0039] Figure 8 A second perspective structural schematic diagram of a conductor connector of a power cable intermediate joint provided by the present invention is shown;

[0040] Fig. 9 A third perspective structural schematic diagram of a conductor connector of a power cable intermediate joint provided by the present invention is shown;

[0041] Fig.10 A schematic structural diagram of a conductor connector of a power cable intermediate joint provided by the present invention is shown in a fourth viewing angle;

[0042] Fig.11 A schematic structural diagram of an annular connecting sleeve of a conductor connecting piece of an intermediate joint of a power cable provided by the present invention is shown;

[0043] Fig.12 A schematic structural diagram of a lock buckle of a conductor connector of a power cable intermediate joint provided by the present invention is shown;

[0044] Fig.13 It shows a first-view structural schematic diagram of the conductor connector and the conductor connector sleeve of the power cable intermediate joint structure provided by the present invention in a mating state;

[0045] Fig.14 A second perspective structural schematic diagram showing a conductor connector and a conductor connector sleeve of a power cable intermediate joint structure provided by the present invention in a mating state;

[0046] Fig.15 yes Fig.14 A-direction cross-sectional schematic diagram;

[0047] Fig.16 The schematic structural diagram of the conductor connection sleeve of the power cable intermediate joint structure provided by the present invention is shown.

[0048] In the figure: annular connecting sleeve 1, recessed groove 2, central cavity 3, missing groove 5, notch 7, assembly part 8, connecting part 9, convex hook 10, main body 11, stop shaft 12, boss 13, cable A, male end 21, female end 22, stress cone 23, supporting part 25, compression spring 26, bottom support 27, joint sleeve 28, tightening bolt 29, metal shielding connecting ring 31, covering sleeve 30, base 32, outward turning part 33, inward turning part 35, outer sleeve 36. DETAILED DESCRIPTION

[0049] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0050] Reference Figure 1 and Fig.16 As shown, this embodiment provides an intermediate joint of a power cable, including: a pair of symmetrically arranged cable connection components and an intermediate connection sleeve. The cable connection component includes a conductor connection sleeve for fixing the peeled portion of one end of cable A, and a conductor connector suitable for matching with the conductor connection sleeve. During the assembly of cable A, the outer skin of one end of cable A is peeled, and then the peeled cable A is matched and fixed with the conductor connection sleeve. The intermediate connection sleeve includes a pair of connection ends suitable for one-to-one connection with the conductor connection sleeves respectively included in a pair of cable connection components. Here, one end of the intermediate connection sleeve connected to one of the conductor connection sleeves in a pair of cable connection components is defined as a male end 21, and one end of the intermediate connection sleeve connected to the other conductor connection sleeve in a pair of cable connection components is defined as a female end 22.

[0051] In more detail, the conductor connector of this embodiment includes an annular connecting sleeve 1, at least one pair of recessed grooves 2 provided on the annular connecting sleeve 1, and at least one pair of lock buckles assembled and connected with at least one pair of recessed grooves 2. In conjunction with the drawings of this embodiment, a case where a pair of recessed grooves 2, i.e., two recessed grooves 2 are symmetrically provided on the annular connecting sleeve 1 and a pair of lock buckles assembled and connected with the pair of recessed grooves 2 are taken as an example. The annular connecting sleeve 1 here is made of, for example, but not limited to, metal copper.

[0052] Specifically, the annular connecting sleeve 1 of this embodiment has a central cavity 3 extending through it along its axial direction; a pair of recessed grooves 2 are recessed and formed on the outer wall of the annular connecting sleeve 1 at intervals; it should be noted that the recessed grooves 2 are not connected to the central cavity 3. A pair of lock buckles are embedded in the recessed grooves 2 in a one-to-one correspondence; the lock buckles include an assembly portion 8 suitable for being embedded in the recessed grooves 2, and a lock hook connected to the assembly portion 8.

[0053] In addition, it should be noted that a notch 5 suitable for the lock hook to extend into the central cavity 3 after passing through is also provided on the side wall of the annular connecting sleeve 1. A notch 7 connected with the notch 5 for the lock hook to pass through is also provided in the recessed groove 2. That is to say, the notch 7 is connected with the notch 5 so that the lock hook can be partially and gradually extended into the central cavity 3, and during the movement of the lock hook, the movement trajectory of the lock hook will not be restricted by the matching of the assembly portion 8 and the recessed groove 2.

[0054] Considering that the assembly part 8 can move synchronously with the lock hook without being separated from the recessed groove 2 during the movement of the lock hook from the outer wall of the annular connecting sleeve 1 to the central cavity 3, the assembly part 8 of this embodiment adopts a cylindrical structure; and the cross-section of the recessed groove 2 is an arc-shaped structure. It should be noted that the assembly part 8 and the recessed groove 2 are interference fit, and the assembly part 8 is suitable for rotating in the recessed groove 2. The interference fit ensures that the assembly part 8 will not be separated from the recessed groove 2 during the movement of the lock hook, and the assembly part 8 can also rotate in the recessed groove 2. Here, it is only necessary to apply a certain amount of toggling force to the lock hook, so that the lock hook and the assembly part 8 can move together by toggling the lock hook.

[0055] In more detail, the lock hook of this embodiment includes a connecting portion 9 connected to the assembly portion 8, and a convex hook 10 connected to one end of the connecting portion 9 away from the assembly portion 8 by bending; the convex hook 10 is protruding relative to the connecting portion 9 so that the convex hook 10 and the connecting portion 9 are in an L-shaped structure. It should also be noted here that the convex hook 10 is bent relative to the connecting portion 9 toward the central cavity 3. The significance of such a design is that when the conductor connector of this embodiment is used in the connection structure of the power cable A, after the central cavity 3 is matched with other structures, the convex hook 10 can be effectively matched with other structures.

[0056] In an optional implementation, the side end surface of the convex hook 10 facing the central cavity 3 is an arc-shaped surface, and the arc-shaped surface here is mainly for maintaining a good matching contact effect with other components when the conductor connector of this embodiment is used in the power cable A connection structure.

[0057] Furthermore, the conductor connection sleeve of this embodiment includes a body 11 and a stop shaft 12 integrally connected to the body 11 and suitable for being embedded in the central cavity 3 of the conductor connection piece. The male end 21 is sleeved and fixed to the outer wall of the body 11, and the body 11 can be connected to the male end 21 or the female end 22 by threaded connection.

[0058] More specifically, a pair of bosses 13 are provided on the circumferential sidewall of the stop shaft 12, which are adapted to be matched with a pair of lock buckles in a one-to-one correspondence. Specifically, the convex hook 10 of the lock buckle is adapted to be engaged with the end face of the boss 13 facing the conductor connection sleeve.

[0059] That is to say, in the process of matching the conductor connector and the conductor connecting sleeve, the retaining shaft 12 is inserted into the central cavity 3 of the conductor connector, and then the lock hook is moved so that the convex hook 10 of the lock hook extends into the central cavity 3 along the notch 5, and finally the convex hook 10 can be matched with the boss 13. At this time, the retaining shaft 12 will not be separated from the central cavity 3 through the cooperation between the convex hook 10 and the boss 13, so that the matching connection between the conductor connecting sleeve and the conductor connector is realized.

[0060] The power cable intermediate joint of this embodiment also includes a stress cone 23 sleeved on the outer skin of the cable A near the conductor connection sleeve, and a cone support assembly connected to the end of the stress cone 23 away from the conductor connection sleeve; wherein the cone support assembly includes a support portion 25 connected to the ground with the stress cone 23, a plurality of compression springs 26 abutting against the support portion 25, and a bottom support 27 abutting against the end of the plurality of compression springs 26 away from the support portion 25. It is also necessary to further explain here that a joint sleeve 28 is integrally injection-molded with epoxy resin material on the outer skin of the cable A, and the end of the stress cone 23 facing the conductor connection sleeve abuts against the joint sleeve 28.

[0061] It should also be noted that the supporting portion 25 and the bottom bracket 27 are provided with connection holes that penetrate the inner hole of the compression spring 26; and the connection holes respectively located on the supporting portion 25 and the bottom bracket 27 are suitable for the compression bolts 29 to pass through to achieve the compression and matching between the bottom bracket 27, the compression spring 26 and the supporting portion 25. In this way, under the elastic action of the compression spring 26, the stress cone 23 and the joint sleeve 28 can maintain a compression effect.

[0062] In addition, the power cable intermediate joint of the present embodiment also includes a covering sleeve 30 suitable for covering the outer side of the stress cone respectively included in the intermediate connection sleeve and a pair of cable connection components; and the power cable intermediate joint also includes a cone support protective cover that abuts against the clamping bolt 29 and is sleeved on the cable outer skin. In detail, the cone support protective cover here includes a base 32 covering the outer side of the cone support assembly, an outward-turned portion 33 connected to the outward-turned fold at one axial end of the base 32, and an inward-turned portion 35 connected to the inward-turned fold at the other axial end of the base 32; wherein the outward-turned portion 33 is folded in a direction away from the cable, and the inward-turned portion 35 is folded in the direction of the cable; the outward-turned portion 33 is suitable for being matched and fixed with one axial end of the cone support protective cover; and the inward-turned portion 35 is suitable for abutting against the clamping bolt 29; the end of the inward-turned portion 33 away from the clamping bolt 29 is matched with a metal shielding connection ring 31 sleeved on the cable outer skin.

[0063] Finally, in an optional implementation, the power cable intermediate joint of this embodiment further includes an outer sleeve 36 forming a protective layer on the outer side of the overall power cable intermediate joint. Specifically, the outer sleeve 36 is sleeved on the outer side of the covering sleeve 30 and the cone support protective cover and the metal shielding connecting ring 31 respectively included in the pair of cable connection components.

[0064] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0065] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0066] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0068] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0069] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. A power cable intermediate joint, characterized in that: include: A pair of symmetrically arranged cable connection assemblies, the cable connection assemblies comprising a conductor connection sleeve for fixing a peeled portion of one end of the cable, and a conductor connector suitable for matching with the conductor connection sleeve; An intermediate connection sleeve, the intermediate connection sleeve comprising a pair of connection ends suitable for one-to-one connection with a pair of conductor connection sleeves respectively included in the cable connection assembly; The conductor connector comprises: An annular connecting sleeve, wherein the annular connecting sleeve has a central cavity extending therethrough along its axial direction; At least one pair of recessed grooves, wherein at least one pair of recessed grooves are recessed and formed at intervals on the outer wall of the annular connecting sleeve; At least one pair of lock buckles, at least one pair of the lock buckles are embedded in the recessed grooves in a one-to-one correspondence; the lock buckles include an assembly portion suitable for being embedded in the recessed grooves, and a lock hook connected to the assembly portion; The conductor connection sleeve comprises a body and a stop shaft integrally connected to the body and suitable for being embedded in a central cavity of the conductor connection piece; and the connection end is sleeved and fixed to the outer wall of the body; At least one pair of bosses is convexly provided on the circumferential side wall of the stop shaft and is suitable for one-to-one correspondence and matching with at least one pair of lock buckles.

2. The power cable intermediate joint according to claim 1, characterized in that: A notch is also provided on the side wall of the annular connecting sleeve, which is suitable for the locking hook to penetrate and extend into the central cavity.

3. The power cable intermediate joint according to claim 1, characterized in that: The locking hook comprises a connecting portion connected to the assembly portion, and a convex hook bent and connected to an end of the connecting portion away from the assembly portion; The convex hook protrudes relative to the connecting portion so that the convex hook and the connecting portion form an L-shaped structure.

4. The power cable intermediate joint according to claim 1, characterized in that: The cable connection assembly also includes a stress cone sleeved on the outer skin of the cable near the conductor connection sleeve, and a cone support assembly connected to the end of the stress cone away from the conductor connection sleeve; wherein The cone support assembly comprises a supporting portion connected to the stress cone, a plurality of compression springs abutting against the supporting portion, and a bottom support abutting against one end of the plurality of compression springs away from the supporting portion.

5. The power cable intermediate joint according to claim 4, characterized in that: The supporting portion and the bottom bracket are provided with a connecting hole which is in communication with the inner hole of the compression spring; and The connecting holes respectively located on the supporting part and the bottom bracket are suitable for the compression bolts to pass through so as to realize the compression matching between the bottom bracket, the compression spring and the supporting part.

6. The power cable intermediate joint according to claim 5, characterized in that: The power cable intermediate joint also includes a covering sleeve suitable for covering the outer sides of the stress cones respectively included in the intermediate connection sleeve and the pair of cable connection components; and The power cable intermediate joint also includes a cone support protective cover which abuts against the clamping bolt and is sleeved on the cable outer sheath.

7. The power cable intermediate joint according to claim 6, characterized in that: The cone support protection cover comprises a base body covering the outside of the cone support assembly, an outward-turned portion connected to an outward-turned fold at one axial end of the base body, and an inward-turned portion connected to an inward-turned fold at the other axial end of the base body; in The outward-turned portion is folded in a direction away from the cable, and the inward-turned portion is folded in a direction toward the cable; The outward-turned portion is suitable for being matched and fixed with one axial end of the cone support protective cover; and The inward-turned portion is suitable for abutting against the clamping bolt; an end of the inward-turned portion away from the clamping bolt is equipped with a metal shielding connecting ring sleeved on the outer sheath of the cable.

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