Shielding type waterproof high-voltage cable joint

Abstract

The utility model discloses a shielding type waterproof high-voltage cable joint, which belongs to the technical field of cable joints, and comprises two joint parts, the main body structure of each joint part is tubular and is provided with a first opening and a second opening, and the diameter of the first opening is larger than that of the second opening; the first cable and the second cable respectively extend into the corresponding connector parts from the second openings of the two connector parts, the two connector parts are detachably connected, and at least three through holes penetrating to the inner cavity are uniformly formed in each connector part in a surrounding manner; the two groups of clamping assemblies are respectively mounted on the two connector parts, each group of clamping assemblies is provided with at least three tips, and the plurality of tips can be driven by power to abut against the outer surface of the first cable or the second cable in the connector parts; under the action of the clamping assembly, the cable can be clamped, and the detachable connection between the two connector parts is matched, so that the risk that the connector part is loosened or fractured again when the two cables are impacted by external force can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable joints, and particularly relates to a shielded waterproof high-voltage cable joint. Background Art

[0002] A cable joint generally refers to a connector in the middle of a cable line, which is used to connect two cables to continue the cable line. Its main function is to ensure that the connected cables have good electrical performance, mechanical performance and sealing performance, and can operate stably under certain environmental conditions.

[0003] At present, after two cables are connected, usually copper welding or soldering is adopted. First, the cores of the two cables are fixedly connected together, then waterproof insulating tape is wrapped, and a cable joint is installed at the joint of the two cables for purposes such as waterproofing and sun protection. However, for some high-voltage cables often laid in the air, due to the large airflow impact in the air and the frequent accidental contact of large birds on the cables, the cables will bear excessive impact. When using a conventional cable joint for connection, after long-term use, it is easy to cause the joints of the two cables to loosen or break under the continuous strong impact, affecting the normal operation of the cable line. Summary of the Utility Model

[0004] The embodiment of the utility model provides a shielded waterproof high-voltage cable joint to solve the problems in the prior art.

[0005] The embodiment of the utility model adopts the following technical scheme: A shielded waterproof high-voltage cable joint for connecting a first cable and a second cable, comprising: connection heads, two are provided, the main structure of each connection head is tubular and has a first opening and a second opening, the diameter of the first opening is larger than that of the second opening, the first cable and the second cable respectively extend into the corresponding connection heads from the second openings of the two connection heads, the two connection heads are detachably connected, and at least three through holes penetrating into the inner cavity are evenly arranged around each connection head; clamping assemblies, two groups are provided and are respectively installed on the two connection heads, each group of clamping assemblies has at least three tips, several tips are respectively slidably arranged in several through holes, and several tips can slide in the corresponding through holes under the drive of power to abut against the outer surfaces of the first cable or the second cable in the connection head.

[0006] Preferably, each clamping assembly further includes an annular plate and an annular knob member. The annular plate is fixedly sleeved on the corresponding joint head. The knob member has a receiving cavity with an open inner circumferential surface. The arc-shaped pressing blocks formed by the outer ends of several center tips all extend into the receiving cavity of the knob member through the open surface of the knob member. The arc-shaped pressing blocks are elastically connected to the corresponding joint heads. An inclined wall is formed on the outer side wall of the arc-shaped pressing block, and several pressing blocks are formed on the top wall of the receiving cavity and correspond to the several arc-shaped pressing blocks one by one. When the knob member rotates, the center tips can be driven to slide in the corresponding through holes by the movement of the pressing blocks on the corresponding inclined walls.

[0007] Preferably, a strip-shaped block extending along the axial direction thereof is formed on the outer wall of each center tip, and a guiding groove slidably matched with the strip-shaped block is formed at the corresponding through hole.

[0008] Preferably, one end of each pressing block close to the corresponding arc-shaped pressing block is arranged as a rounded surface.

[0009] Preferably, a spring is coaxially installed on each center tip, and the two ends of the spring respectively abut against the corresponding joint head and the arc-shaped pressing block.

[0010] Preferably, the clamping assembly further includes a locking member. After the knob member rotates in place, relative locking between the knob member and the corresponding annular plate is achieved through the locking member.

[0011] Preferably, the locking member is configured as a self-tapping bolt. An insertion block is coaxially connected to the end of the self-tapping bolt. The diameter of the insertion block is smaller than the diameter of the threaded portion of the self-tapping bolt. A threaded hole threadedly connected with the self-tapping bolt is provided on the annular plate. Several annularly distributed insertion holes are formed at one end of the knob member close to the corresponding annular plate. After the knob member rotates in place, the insertion block can be inserted into one of the insertion holes by rotating the self-tapping bolt.

[0012] Preferably, an external thread is formed on the outer wall at the first opening of one joint head, and an internal thread groove is formed at the first opening of the other joint head. The two joint heads are threadedly connected through the external thread and the internal thread groove. After the two joint heads are installed in place, the end of one joint head abuts against the bottom of the internal thread groove.

[0013] Preferably, after the two joint heads are installed in place, a sealing installation is achieved between the end of one joint head and the bottom of the internal thread groove through a sealing ring.

[0014] Preferably, the diameter of the second opening is the same as the diameter of the first cable and / or the second cable.

[0015] The above at least one technical solution adopted in the embodiment of the present utility model can achieve the following beneficial effects:

[0016] After the cable joints of the present utility model are connected at two joint parts, the corresponding clamping components are used to make three tips abut against the cables in the corresponding joint parts to complete the clamping of the cables. Then, waterproof insulating tape is wound several times at the second openings of the two joint parts for sealing the second openings, thereby completing the connection of the first cable and the second cable. Under the action of the clamping components, the cables can be clamped, and in combination with the detachable connection between the two joint parts, the risk of loosening or re-breaking at the joint can be avoided when the two cables are impacted by external forces (such as strong air currents or flying birds in the air), improving the service life of the two cables. At the same time, the cable joint can also play a role in insulating and waterproofing the cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present utility model and form a part of the present utility model. The schematic embodiments and descriptions thereof are used to explain the present utility model and do not constitute an improper limitation of the present utility model.

[0018] In the drawings:

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is a top view of the present utility model;

[0021] Figure 3 is Figure 2 a three-dimensional cross-sectional view of the A-A section in

[0022] Figure 4 is Figure 2 a cross-sectional view of the B-B section in

[0023] Figure 5 is a partial structural schematic diagram of one of the joint parts and the clamping components of the present utility model;

[0024] Figure 6 is an exploded view of the annular plate, the knob member and the locking member of the present utility model;

[0025] Figure 7 is an exploded view of the two joint parts of the present utility model.

[0026] REFERENCE NUMERALS

[0027] 1 - First cable; 2 - Second cable; 3 - Connector head; 31 - First opening; 32 - Second opening; 33 - Perforation; 34 - Guide groove; 35 - External thread; 36 - Internal thread groove; 37 - Sealing ring; 4 - Clamping assembly; 41 - Tip; 411 - Arc-shaped pressing block; 412 - Inclined wall; 413 - Strip-shaped block; 42 - Ring plate; 421 - Threaded hole; 43 - Knob part; 431 - Accommodating cavity; 432 - Jack; 44 - Pressing block; 441 - Rounded surface; 45 - Spring; 46 - Locking part; 461 - Self-tapping bolt; 462 - Insert block; 5 - Waterproof insulating tape. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments of the present utility model and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0029] The technical solutions provided by each embodiment of the present utility model will be described in detail below with reference to the drawings.

[0030] Refer to Figures 1 to 7 As shown, a shielded waterproof high-voltage cable connector for connecting the first cable 1 and the second cable 2 includes two connector heads 3 and two clamping assemblies 4, and the two clamping assemblies 4 are respectively installed on the two connector heads 3.

[0031] As Figure 3 and Figure 7As shown, the main structure of each joint head 3 is tubular and has a first opening 31 and a second opening 32. The diameter of the first opening 31 is larger than that of the second opening 32. The first cable 1 and the second cable 2 respectively extend into the corresponding joint head 3 from the second opening 32 of the two joint heads 3. The diameter of the second opening 32 is the same as the diameter of the first cable 1 and / or the second cable 2. The two joint heads 3 are detachably connected. At least three through holes 33 penetrating into the inner cavity are evenly arranged around each joint head 3; in some practical applications, an external thread 35 is formed on the outer wall at the first opening 31 of one joint head 3, and an internal thread groove 36 is formed at the first opening 31 of the other joint head 3. The two joint heads 3 are threadedly connected through the external thread 35 and the internal thread groove 36. After the two joint heads 3 are installed in place, the end of one joint head 3 abuts against the bottom of the internal thread groove 36, thereby realizing the detachable connection between the two joint heads 3. It should be noted that the two joint heads 3 can also be connected together by a common clamping method on the market; in addition, after the two joint heads 3 are installed in place, a sealing ring 37 is used to seal and install between the end of one joint head 3 and the bottom of the internal thread groove 36, improving the waterproof performance at the two cable joints.

[0032] As Figure 1 , Figures 3 to 6 shown, each set of clamping components 4 has at least three tips 41. A number of tips 41 are respectively slidably arranged in a number of through holes 33. The number of tips 41 can be slid in the corresponding through holes 33 by power drive to abut against the outer surface of the first cable 1 or the second cable 2 in the joint head 3.

[0033] In actual use, it is necessary to first insert the first cable 1 and the second cable 2 into the corresponding connector 3 through the second openings 32 of the two connectors 3 respectively, and expose the cores of the two cables (i.e., the first cable 1 and the second cable 2). The cores of the two cables are connected together by means of connection such as soldering copper or soldering tin, and insulating tape is wound around the connection part for sealing. Subsequently, the two connectors 3 are connected together, that is, by rotating, the two connectors 3 are screwed together. At this time, the cable connection is completed. For the existing cable connectors, they are mainly used to protect the connectors 3 of the two cables (i.e., the first cable 1 and the second cable 2). After the two connectors 3 of the cable connector of the present invention are connected, it is also necessary to make the three tips 41 abut against the cables in the corresponding connectors 3 through the corresponding clamping assembly 4 to complete the clamping of the cables. Then, the second openings 32 of the two connectors 3 are wound with waterproof insulating tape 5 for several rounds to seal the second openings 32, and the connection of the first cable 1 and the second cable 2 is completed. Under the action of the clamping assembly 4, the cables can be clamped. In cooperation with the detachable connection between the two connectors 3, it is possible to avoid the risk that the two cables are loosened or broken again at the joint when impacted by external forces (such as strong air currents or flying birds in the high altitude), and improve the service life of the two cables. At the same time, the cable connector can also play a role in insulating and waterproofing the cables.

[0034] In some practical applications, such as Figure 1 , Figures 3 to 6 shown, each clamping assembly 4 further includes an annular plate 42 and an annular knob member 43. The annular plate 42 is fixedly sleeved on the corresponding connector 3. The knob member 43 has a receiving cavity 431 and its inner circumferential surface is an open surface. The arc-shaped pressing blocks 411 formed by the outer ends of several tips 41 all extend into the receiving cavity 431 of the knob member 43 through the open surface of the knob member 43. The arc-shaped pressing blocks 411 are elastically connected to the corresponding connectors 3. Springs 45 can be coaxially installed on each tip 41. The two ends of the spring 45 respectively abut against the corresponding connector 3 and the arc-shaped pressing block 411, so as to realize the elastic connection between the arc-shaped pressing block 411 and the connector 3.

[0035] An inclined wall 412 is formed on the outer side wall of the arc-shaped pressing block 411 (such as Figure 4 and Figure 5), a plurality of pressing blocks 44 are formed on the top wall of the accommodating cavity 431 and respectively correspond to a plurality of arc-shaped pressing blocks 411. One end of each pressing block 44 close to the corresponding arc-shaped pressing block 411 is provided with a rounded surface 441. Under the action of the spring 45, the arc-shaped pressing block 411 can be pressed against the inclined wall 412 of the pressing block 44. Thus, when the knob member 43 rotates, by the movement of the pressing block 44 on the corresponding inclined wall 412, the tip 41 can be driven to slide in the corresponding through hole 33. It should be noted that, as Figure 4 shown, when the operator rotates the knob member 43, it should be rotated clockwise in the direction shown in the figure, and the rotation angle of the entire knob member 43 is also limited to a certain angle range, so that the tip 41 can be pressed against the outer surface of the cable (the first cable 1 shown here), so as to achieve the purpose of fixedly clamping the cable. Here, it should be noted that the end of the tip 41 should not be too sharp to avoid completely piercing the surface protection sleeve of the cable.

[0036] In some practical applications, such as Figure 5 shown, a strip-shaped block 413 extending along its axial direction is formed on the outer wall of each tip 41, and a guide groove 34 slidably matched with the strip-shaped block 413 is formed at the corresponding through hole 33. Thus, when the tip 41 slides in the corresponding through hole 33, it will not rotate, ensuring that the bending direction of the arc-shaped pressing block 411 always remains adapted to the direction of the knob member 43.

[0037] In some practical applications, such as Figure 1 、 Figure 3 and Figure 6As shown, the clamping assembly 4 further includes a locking member 46. After the knob member 43 rotates into place, relative locking between the knob member 43 and the corresponding annular plate 42 is achieved through the locking member 46. The locking member 46 is configured as a self-tapping bolt 461, and an insertion block 462 is coaxially connected to the end portion of the self-tapping bolt 461. The diameter of the insertion block 462 is smaller than the diameter of the threaded portion of the self-tapping bolt 461. A threaded hole 421 threadedly connected to the self-tapping bolt 461 is provided on the annular plate 42. A plurality of annularly distributed insertion holes 432 are formed at one end of the knob member 43 close to the corresponding annular plate 42. After the knob member 43 rotates into place, the insertion block 462 can be inserted into one of the insertion holes 432 by rotating the self-tapping bolt 461. It should be noted that the distance between two adjacent insertion holes 432 needs to be determined according to actual use or requirements. When rotating the knob member 43, it is necessary to rotate the hand-tightening bolt to make the insertion block 462 disengage from one of the insertion holes 432, and then rotate the knob member 43 so that a plurality of tips 41 jointly abut against the outer surface of the cable to fix the cable. Subsequently, after the tips 41 are pressed tightly against the cable, it is necessary to ensure that at least one insertion hole 432 corresponds to the hand-tightening bolt so that the insertion block 462 can smoothly enter the insertion hole 432 to lock the knob member 43.

[0038] In summary, the cable connector can be configured with different models to adapt to different models of cables or other wires and cables, that is, by changing the sizes of the second opening 32 and the first opening 31 to ensure that other cables can smoothly enter the inside of the joint portion 3.

[0039] The above are only embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A shielded waterproof high-voltage cable joint for connecting a first cable (1) and a second cable (2), characterized in that, Including: There are two connection heads (3). The main structure of each connection head (3) is tubular and has a first opening (31) and a second opening (32). The diameter of the first opening (31) is larger than that of the second opening (32). The first cable (1) and the second cable (2) respectively extend into the corresponding connection heads (3) from the second openings (32) of the two connection heads (3). The two connection heads (3) are detachably connected. At least three through holes (33) penetrating into the inner cavity are evenly arranged around each connection head (3). There are two sets of clamping assemblies (4) which are respectively installed on the two connection heads (3). Each set of clamping assemblies (4) has at least three tips (41). A number of tips (41) are respectively slidably arranged in a number of through holes (33). A number of tips (41) can slide in the corresponding through holes (33) by power drive to abut against the outer surfaces of the first cable (1) or the second cable (2) in the connection head (3).

2. The screened waterproof high-voltage cable joint according to claim 1, characterized in that, Each set of clamping assemblies (4) further includes an annular plate (42) and an annular knob member (43). The annular plate (42) is fixedly sleeved on the corresponding connection head (3). The knob member (43) has a receiving cavity (431) and its inner circumferential surface is an open surface. The arc-shaped pressing blocks (411) formed at the outer ends of a number of tips (41) all extend into the receiving cavity (431) of the knob member (43) through the open surface of the knob member (43). The arc-shaped pressing blocks (411) are elastically connected to the corresponding connection heads (3). An inclined wall (412) is formed on the outer side wall of the arc-shaped pressing block (411). A number of pressing blocks (44) are formed on the top wall of the receiving cavity (431) and correspond to a number of arc-shaped pressing blocks (411) one by one. When the knob member (43) rotates, the tips (41) can be driven to slide in the corresponding through holes (33) by the pressing blocks (44) moving on the corresponding inclined walls (412).

3. A shielded waterproof high-voltage cable joint according to claim 2, characterized in that, A strip-shaped block (413) extending along its axial direction is formed on the outer wall of each tip (41). A guide groove (34) slidably matched with the strip-shaped block (413) is formed at the corresponding through hole (33).

4. The screened waterproof high-voltage cable joint according to claim 2, wherein, One end of each pressing block (44) close to the corresponding arc-shaped pressing block (411) is set as a rounded surface (441).

5. The screened waterproof high-voltage cable joint according to claim 2, characterized in that, A spring (45) is coaxially installed on each tip (41). The two ends of the spring (45) respectively abut against the corresponding connection head (3) and the arc-shaped pressing block (411).

6. The shielded waterproof high-voltage cable joint according to claim 2, wherein, The clamping assembly (4) further includes a locking member (46). After the knob member (43) rotates in place, relative locking between the knob and the corresponding annular plate (42) is achieved through the locking member (46).

7. The screened waterproof high-voltage cable joint according to claim 6, characterized in that, The locking member (46) is configured as a self-tapping bolt (461), and an insertion block (462) is coaxially connected to the end portion of the self-tapping bolt (461). The diameter of the insertion block (462) is smaller than the diameter of the threaded portion of the self-tapping bolt (461). A threaded hole (421) threadedly connected to the self-tapping bolt (461) is provided on the annular plate (42). A plurality of annularly distributed insertion holes (432) are formed at one end of the knob member (43) close to the corresponding annular plate (42). After the knob member (43) rotates into place, the insertion block (462) can be inserted into one of the insertion holes (432) by rotating the self-tapping bolt (461).

8. The shielded waterproof high-voltage cable joint according to claim 1, wherein, External threads (35) are formed on the outer wall at the first opening (31) of one of the joint heads (3), and an internal thread groove (36) is formed at the first opening (31) of the other joint head (3). The two joint heads (3) are threadedly connected through the external threads (35) and the internal thread groove (36). After the two joint heads (3) are installed in place, the end portion of one of the joint heads (3) abuts against the bottom of the internal thread groove (36).

9. The screened waterproof high-voltage cable joint according to claim 8, characterized in that, After the two joint heads (3) are installed in place, sealed installation is achieved between the end portion of one of the joint heads (3) and the bottom of the internal thread groove (36) through a sealing ring (37).

10. A shielded waterproof high-voltage cable joint according to claim 1, characterized in that, The diameter of the second opening (32) is the same as the diameter of the first cable (1) and / or the second cable (2).

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