A pull-off prevention reinforced cable connector for power construction

Abstract

The present application relates to the technical fields of cable connector, and discloses a kind of anti-pulling reinforced cable connectors for power construction, including connector, connector includes the shell of hollow design, the outer positioning piece is fixedly connected with two ends of shell outer side symmetry, the inner positioning piece is arranged in the middle of shell, the buckle is symmetrically arranged in the upper and lower ends of shell, the limiting pin is arranged in the both sides of shell, and the fixed ring is fixedly arranged in the middle of shell outer wall.The present application is designed by the cooperation of outer positioning piece and inner positioning piece, forms the bidirectional fixed system of "internal support + external lock", and the positioning group one and the positioning group two are staggered distribution, realize the all-around clamping of cable inner and outer circle;Cone-shaped positioning lug can be embedded in cable skin pattern, and elastic support rod realizes self-adapting adjustment of clamping force, and wave-shaped positioning effect is realized by the deformation of elastic structure, can absorb displacement generated by external force pulling, vibration, thermal expansion and cold shrink, ensure the stability of connection.

Description

Technical Field

[0001] This invention relates to the field of cable connector technology, and specifically to a reinforced cable connector for power construction that is designed to prevent pull-out. Background Technology

[0002] Cable connectors are core components in power transmission lines, enabling rapid cable splicing and circuit connection. They are primarily used to ensure stable current conduction, facilitate segmented splicing of lines, and support maintenance and capacity expansion. They are indispensable connecting components in power construction. In power construction scenarios, this equipment has a wide range of applications, including high-altitude line connections on outdoor high-voltage towers, concealed line connections in underground trenches, and equipment wiring in substations. They undertake important tasks such as line splicing, temporary wiring, renovation of old lines, and emergency repairs. Their performance directly affects the stability of power transmission and the safety of construction operations, and is fundamental to ensuring the continuous and reliable operation of the power system. Whether laying new power lines or maintaining and upgrading existing lines, the efficient adaptation of cable connectors is indispensable. They effectively reduce the difficulty of cable splicing, improve work efficiency, and provide convenient conditions for subsequent line maintenance and capacity expansion.

[0003] In actual construction and subsequent operation and maintenance, cables are often subjected to a variety of external forces, including external pulling during construction, natural wind vibration in outdoor environments, self-weight sagging due to the cable's own weight, and temperature deformation caused by diurnal temperature differences and seasonal changes. These external forces act on the cable connection points for a long time, placing extremely high demands on the fastening performance of connectors. However, the fastening structure design of conventional cable connectors is relatively simple, with insufficient strength, weak tensile strength, and a lack of targeted anti-pull-out reinforcement design, making them prone to problems such as cable loosening, slippage, or even breakage. Such faults not only directly cause power outages, affecting industrial production and daily life, but the arcing caused by poor contact can also create serious safety hazards such as leakage and short circuits. At the same time, it will significantly increase the labor and material costs of operation and maintenance, delay the overall construction progress, and in severe cases, threaten the personal safety of on-site workers, causing many problems for power construction and operation and maintenance work. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a reinforced cable connector for power construction that is resistant to pull-out. It can effectively solve the problems of simple fastening structure, poor tensile strength, lack of dedicated anti-pull-out design, and easy loosening, slippage or even wire breakage of the connector in the existing technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a pull-out resistant reinforced cable connector for power construction, comprising: The connector includes a hollow housing, with external positioning components symmetrically fixedly connected to both ends of the outer side of the housing, an internal positioning component provided in the middle of the housing, and buckles symmetrically provided at the upper and lower ends of the housing. Limiting pins are provided on both sides of the housing. The external positioning component includes a fixing ring fixedly provided in the middle of the outer wall of the housing, and positioning groups are equidistantly provided on the inner wall of the fixing ring. The internal positioning component includes a limiting plate fixedly connected in the middle of the housing, a limiting ring at the top of the limiting plate, and positioning group two equidistantly arranged at the top of the limiting ring, the positioning group two being staggered with positioning group one. The fixing ring has a positioning ring connected to the buckle on the side near the inner positioning member.

[0006] Furthermore, the positioning assembly includes a base plate embedded in a groove in the inner wall of the fixing ring, and a guide block is fixedly connected to the bottom end of the base plate. The guide block is inclined on the side near the inner positioning member.

[0007] Furthermore, the positioning assembly also includes a support rod at the top of the base plate, and a positioning protrusion is provided at the top of the support rod. The surface of the positioning protrusion is designed in the shape of a frustum.

[0008] Furthermore, the fixed ring has a movable groove on the side near the inner positioning member to restrict the movement trajectory of the positioning ring, the inner wall of the positioning ring is inclined, and the inclined surface of the positioning ring is in contact with the inclined surface of the guide block.

[0009] Furthermore, the positioning ring has fixed plates equidistantly arranged along the circumference at one end near the inner positioning member, and the other side of the two fixed plates is fixedly connected to a connecting rod two. The other end of the connecting rod two is fixedly connected to a contact block with a spherical design. In the initial state, the contact block is located directly below the raised end of the positioning group one.

[0010] Furthermore, a connecting rod is fixedly connected to the other side of the other two contact blocks, and the connecting rod is connected to a limiting pin.

[0011] Furthermore, the limiting pin includes a push rod fixedly connected to one end of the connecting rod, the push rod being embedded in the inner wall of the channel, and the channel being opened in the middle of the side of the housing.

[0012] Furthermore, a T-shaped groove is provided at the bottom of the inner wall of the limiting ring, and there is a gap between the T-shaped groove and the T-shaped block at the top of the channel.

[0013] The technical solution provided by this invention has the following advantages compared with the prior art: This invention forms a two-way fixing system of "internal support + external locking" through the coordinated design of external and internal positioning components. Positioning group one and positioning group two are staggered to achieve all-round clamping of the inner and outer rings of the cable. The frustum-shaped positioning protrusion of positioning group one can be embedded into the texture of the cable sheath, and the elastic support rod realizes adaptive adjustment of clamping force. The wave-shaped positioning effect is achieved through the deformation of the elastic structure, which can absorb the displacement caused by external force pulling, vibration, and thermal expansion and contraction, fundamentally eliminating the problems of cable loosening, slippage, and breakage, and ensuring the stability of the connection. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the connector structure according to an embodiment of the present invention; Figure 3 This is a schematic cross-sectional view of the connector structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal positioning component structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the positioning ring connection structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the movement of the limiting pin structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the positioning group one structure according to an embodiment of the present invention.

[0016] The labels in the diagram represent: 1. Connector; 11. Housing; 12. Outer positioning component; 121. Fixing ring; 122. Positioning ring; 1221. Link 1; 1222. Contact block; 1223. Link 2; 1224. Fixing plate; 123. Positioning group 1; 1231. Base plate; 1232. Support rod; 1233. Positioning protrusion; 124. Movable groove; 125. Guide block; 13. Buckle; 14. Limiting pin; 141. Channel; 142. Push rod; 15. Inner positioning component; 151. Limiting plate; 152. Limiting ring; 153. Positioning group 2. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] The present invention will be further described below with reference to embodiments.

[0019] Example: Please refer to Figures 1-7 This invention provides a technical solution for a pull-out resistant reinforced cable connector for power construction: refer to Figure 1 , Figure 2 and Figure 3 As the core component of the connecting cable, connector 1 consists of core components such as housing 11, outer positioning component 12, inner positioning component 15, buckle 13, and limit pin 14. The outer positioning component 12 is responsible for reinforcing and fixing the outer ring of the cable, and the inner positioning component 15 is responsible for reinforcing and fixing the inner ring of the cable. The two form a two-way fixing system of "inner support + outer lock".

[0020] The outer positioning component 12 is symmetrically fixed at both ends of the outer side of the housing 11. The outer positioning component 12 includes a fixing ring 121. The inner wall of the fixing ring 121 is equidistantly provided with positioning group 123. The positioning group 123 can form a uniform clamping force on the outer ring of the cable, realize the precise radial positioning of the cable, and prevent the cable from shifting or shaking in the fixing ring 121, thus laying the foundation for subsequent reinforcement and fixation.

[0021] refer to Figure 3 and Figure 7 The positioning assembly 123 employs a three-layer structure. A base plate 1231 is embedded in a groove in the inner wall of the fixing ring 121. A guide block 125 is fixedly connected to the bottom end of the base plate 1231. The guide block 125 is inclined on the side closest to the inner positioning member 15, and it fits against the inclined surface of the positioning ring 122. Through the interaction of the inclined surfaces, the axial thrust of the positioning ring 122 is converted into the radial clamping force of the positioning assembly 123. Buckles 13 are symmetrically arranged at the upper and lower ends of the housing 11 and connected to the positioning ring 122.

[0022] A support rod 1232 is provided at the top of the base plate 1231. A spring is installed inside the support rod 1232. The clamping force is adaptively adjusted by the elastic deformation of the support rod 1232 itself. This ensures that the cable is firmly clamped while avoiding damage to the cable sheath caused by excessive clamping force. A positioning protrusion 1233 is provided at the top of the support rod 1232. The surface of the positioning protrusion 1233 is designed in the shape of a frustum. The inclined surface of the frustum can guide the cable when it is inserted, making it easy for the cable to be quickly inserted into the positioning position. At the same time, the protruding structure of the frustum can be embedded in the fine texture of the cable sheath, further improving the positioning firmness and preventing the cable from sliding axially, thus reducing the risk of pull-out from the root.

[0023] refer to Figure 3 and Figure 5 The inner wall of the positioning ring 122 is inclined. When the positioning ring 122 moves along the movable groove 124 toward the inner positioning member 15, the mutual compression between the inclined surfaces will push the guide block 125 to drive the base plate 1231, support rod 1232 and positioning protrusion 1233 to move inward, thereby clamping the outer ring of the cable. Conversely, when the positioning ring 122 moves in the opposite direction, the clamping force is released, which facilitates the disassembly of the cable and realizes the "movement-clamping-release" operation.

[0024] A fixing plate 1224 is equidistantly arranged along the circumference at one end of the positioning ring 122 near the inner positioning member 15. A connecting rod 1223 is fixedly connected to the other side of the two fixing plates 1224. A contact block 1222 with a spherical design is fixedly connected to the other end of the connecting rod 1223. In the initial state, the contact block 1222 is located directly below the raised end of the positioning group 123. When the positioning ring 122 moves, the contact block 1222 can contact the raised end of the positioning group 123 to further transmit the clamping force and ensure that the positioning group 123 clamps the cable more evenly and firmly. At the same time, the spherical design of the contact block 1222 can reduce the friction between it and the positioning group 123.

[0025] The other two contact blocks 1222 are fixedly connected to the other side of the connecting rod 1221. The connecting rod 1221 is connected to the limiting pin 14. The movement of the limiting pin 14 can drive the positioning ring 122 to move along the movable groove 124, thereby realizing the clamping and release of the positioning group 123. At the same time, the limiting pin 14 can limit the position of the positioning ring 122 to avoid structural damage caused by excessive movement of the positioning ring 122.

[0026] refer to Figure 2 , Figure 3 and Figure 6Limiting pins 14 are located on both sides of the housing 11. Each limiting pin 14 includes a push rod 142 fixedly connected to one end of a connecting rod 1221. The push rod 142 is embedded in the inner wall of a channel 141, which is located in the middle of the side of the housing 11 to prevent outdoor dust, rainwater, and other impurities from entering and to avoid jamming of the push rod 142. Construction personnel only need to push the push rod 142 to move the positioning ring 122 via the connecting rod 1221, thereby controlling the clamping and releasing of the positioning assembly 123.

[0027] refer to Figure 3 and Figure 4 The inner positioning component 15 is located in the middle of the housing 11, forming a two-way fixing system of "inner support + outer lock" with the outer positioning component 12. The inner positioning component 15 includes a limiting plate 151 fixedly connected to the middle of the housing 11. A limiting ring 152 is provided at the top of the limiting plate 151. The limiting ring 152 adopts a ring structure and cooperates with the fixing ring 121 of the outer positioning component 12 to form a double ring positioning inside and outside, ensuring that the cable positioning is more accurate and firm.

[0028] Positioning groups 153 are equidistantly arranged at the top of the limiting ring 152. Positioning groups 153 and positioning groups 123 are staggered. The staggered arrangement can achieve all-round clamping of the inner and outer rings of the cable, avoiding positioning blind spots. At the same time, the staggered distribution of positioning groups can disperse the force on the cable, avoid cable damage caused by excessive local force, further improve the connection firmness, effectively resist the influence of external force pulling and vibration, and reduce the risk of pull-out. Positioning groups 123 and positioning group 153 are both elastically designed, which can adaptively adjust the clamping force to adapt to cables of different diameters. At the same time, they absorb the displacement caused by external force pulling, vibration, and thermal expansion and contraction, and avoid cable loosening and pull-out caused by rigid pulling.

[0029] refer to Figure 4 The bottom of the inner wall of the limiting ring 152 is provided with a T-shaped groove. There is a slight gap between the T-shaped groove and the T-shaped block at the top of the channel 141. This not only ensures the connection stability between the limiting ring 152 and the housing 11 and prevents the limiting ring 152 from rotating or shifting, but also provides a certain amount of room for the limiting ring 152 to accommodate the deformation caused by the thermal expansion and contraction of the cable. At the same time, the design of the slight gap also plays a buffering role, absorbing the impact force generated by the cable vibration, and further improving the stability of the connection.

[0030] This device ensures precise docking of the conductors of the two cables through the limiting plate 151 and limiting ring 152 of the inner positioning component 15, avoiding poor contact caused by docking misalignment; the firm clamping of positioning group one 123 and positioning group two 153 ensures that the cable and the internal contact of connector 1 always maintain close contact, avoiding heat generation and oxidation caused by poor contact, and reducing the risk of short circuit and leakage.

[0031] The operator slowly pushes the push rods 142 of the limiting pins 14 on both sides of the housing 11. The push rods 142 move along the channel 141 towards the inner positioning member 15, and through the connecting rod 1221, drive the contact block 1222 to move, which in turn drives the positioning ring 122 to move along the movable groove 124 towards the inner positioning member 15. As the positioning ring 122 moves, the inclined surface of the positioning ring 122 and the inclined surface of the guide block 125 press against each other, pushing the guide block 125 to move inward. The guide block 125 drives the base plate 1231, the support rod 1232 and the positioning protrusion 1233 to move inward simultaneously. The positioning assembly 123 gradually contracts, forming a uniform clamping force on the outer ring of the cable.

[0032] Meanwhile, the connecting rod 1223 on the positioning ring 122 drives the corresponding contact block 1222 to move. The contact block 1222 contacts the raised end of the positioning group 123, further transmitting the clamping force and ensuring that the positioning group 123 clamps the outer ring of the cable more firmly. The support rod 1232 of the positioning group 123 is made of elastic material, which can adaptively adjust the clamping force according to the diameter of the cable, ensuring firm clamping while avoiding damage to the cable sheath.

[0033] When the positioning ring 122 moves to the preset position, the positioning protrusion 1233 of the positioning group 123 is embedded in the fine texture of the outer ring of the cable, thus firmly fixing the outer ring of the cable. At this time, the positioning group 2 153 of the inner positioning member 15 is staggered with the positioning group 123. The positioning group 2 153 forms a firm clamp on the inner ring of the cable under its own elasticity, forming a two-way fixing system of "inner support + outer lock" with the positioning group 123, realizing all-round reinforcement of the cable and effectively resisting the influence of external force pulling, vibration and other effects.

[0034] Finally, the pressed buckle 13 is released, and the buckle 13 resets under its own elasticity, engaging with the positioning ring 122 to fix the position of the positioning ring 122 and prevent the positioning ring 122 from moving in the opposite direction and causing the clamping force to be released. At the same time, the push rod 142 of the limiting pin 14 is locked in the position within the groove 141, further restricting the movement of the positioning ring 122 and ensuring a stable reinforcement and fixation effect. Thus, the cable reinforcement and fixation operation is completed, and connector 1 achieves a firm connection between the two cables, possessing good anti-pull-out and vibration resistance performance.

[0035] During later maintenance, if it is necessary to inspect or replace the cable, the connector 1 can be disassembled by following these steps: First, press the latches 13 at both ends of the housing 11 to unlock the latches 13 from the positioning ring 122; then, push the push rod 142 of the limit pin 14 to move away from the inner positioning part 15 along the channel 141. The positioning ring 122 will move in the opposite direction along the movable groove 124 through the connecting rod 1221. The squeezing action between the positioning ring 122 and the inclined surface of the guide block 125 will disappear, and the positioning group 123 will open under its own elasticity, releasing the clamping force; at this time, the clamping force of the positioning group 2 153 will also be released simultaneously, and the construction personnel can pull the cable out from both ends of the connector 1 for inspection and replacement.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reinforced cable connector for power construction that prevents pull-out, characterized in that, include: The connector (1) includes a hollow housing (11), with external positioning parts (12) symmetrically fixed at both ends of the outer side of the housing (11), an internal positioning part (15) provided in the middle of the housing (11), buckles (13) symmetrically provided at the upper and lower ends of the housing (11), and limit pins (14) provided on both sides of the housing (11). The external positioning part (12) includes a fixing ring (121) fixedly provided in the middle of the outer wall of the housing (11), and positioning groups (123) are equidistantly provided on the inner wall of the fixing ring (121). The inner positioning component (15) includes a limiting plate (151) fixedly connected in the middle of the housing (11), a limiting ring (152) is provided at the top of the limiting plate (151), and a second positioning group (153) is provided at equal intervals at the top of the limiting ring (152). The second positioning group (153) and the first positioning group (123) are staggered. Among them, the fixing ring (121) is provided with a positioning ring (122) connected to the buckle (13) on the side near the inner positioning member (15).

2. The anti-pull-out reinforced cable connector for power construction according to claim 1, characterized in that: The positioning assembly (123) includes a base plate (1231) embedded in the groove of the inner wall of the fixing ring (121). A guide block (125) is fixedly connected to the bottom end of the base plate (1231). The guide block (125) is inclined on the side near the inner positioning member (15).

3. The anti-pull-out reinforced cable connector for power construction according to claim 2, characterized in that: The positioning assembly (123) further includes a support rod (1232) set at the top of the base plate (1231), and a positioning protrusion (1233) is provided at the top of the support rod (1232), and the surface of the positioning protrusion (1233) adopts a frustum-shaped design.

4. A reinforced cable connector for power construction with anti-pull-out features as described in claim 2, characterized in that: The fixed ring (121) has an active groove (124) on the side near the inner positioning member (15) to restrict the movement trajectory of the positioning ring (122). The inner wall of the positioning ring (122) is designed with an inclination, and the inclination surface of the positioning ring (122) is in contact with the inclination surface of the guide block (125).

5. A reinforced cable connector for power construction with anti-pull-out protection as described in claim 4, characterized in that: The positioning ring (122) has a fixing plate (1224) equidistantly arranged along the circumference at one end near the inner positioning member (15). The two fixing plates (1224) are fixedly connected to the other side of the two fixing plates (1224) with a connecting rod (1223). The other end of the connecting rod (1223) is fixedly connected to a contact block (1222) with a spherical design. In the initial state, the contact block (1222) is located directly below the raised end of the positioning group one (123).

6. A reinforced cable connector for power construction with anti-pull-out protection as described in claim 5, characterized in that: The other two contact blocks (1222) are fixedly connected to a connecting rod (1221) on the other side, and the connecting rod (1221) is connected to the limiting pin (14).

7. A reinforced cable connector for power construction with anti-pull-out protection as described in claim 6, characterized in that: The limiting pin (14) includes a push rod (142) fixedly connected to one end of the connecting rod (1221). The push rod (142) is embedded in the inner wall of the channel (141), which is located in the middle of the side of the housing (11).

8. A reinforced cable connector for power construction with anti-pull-out protection as described in claim 1, characterized in that: The bottom of the inner wall of the limiting ring (152) is provided with a T-shaped groove, and there is a gap between the T-shaped groove and the T-shaped block at the top of the channel (141).

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