A high voltage cable connection device

Abstract

This invention belongs to the field of high-voltage cable connection technology. A high-voltage cable connection device includes a connecting seat and a clamping device. The connecting seat contains two clamping devices located at both ends. The connecting seat has a driving device for clamping the devices and a limiting device for restricting the rotation of the driving device. The cable core is divided into multiple parts and inserted into the connecting seat, positioned at the center of the clamping device. Multiple square tubes are then inserted into the limiting device to release the restriction on the driving device. Rotating the square tubes causes the limiting device to rotate, which in turn causes the driving device to rotate. The rotating driving device then compresses the clamping device, squeezing the core. Removing the square tubes again causes the limiting device to restrict the driving device, thus limiting the clamping device. The clamping device can also be removed from the cable and reused by rotating the driving device in the opposite direction.

Description

Technical Field

[0001] This invention belongs to the field of high-voltage cable connection technology, and particularly relates to a high-voltage cable connection device. Background Technology

[0002] High-voltage cables play a crucial role in power transmission, and connections between high-voltage cables are made using connectors.

[0003] Current connection devices fix cables by squeezing and pressing them together. However, since cables are composed of multiple cores, directly squeezing the cores with the clips cannot ensure that each core is subjected to equal force, which could cause the core to break and the clip to fall off. Summary of the Invention

[0004] The purpose of this invention is to provide a high-voltage cable connection device to improve the tightness of the connection by ensuring that each conductor in the cable is subjected to uniform stress.

[0005] To achieve the above objectives, the specific technical solution of the high-voltage cable connection device of the present invention is as follows:

[0006] A high-voltage cable connection device includes a connecting seat and a clamping device. The connecting seat has two clamping devices inside. The two clamping devices are located at both ends of the connecting seat. The connecting seat is provided with a driving device for driving the clamping devices to clamp, and a limiting device for limiting the rotation of the driving device is provided on the connecting seat.

[0007] Furthermore, the connector includes a base body, mounting holes, sealing sleeves, and wire core insertion holes. The base body has mounting holes at both ends for installing the sealing sleeves, and wire core insertion holes at both ends for inserting cable cores. The base body is equipped with a clamping device for clamping the wire cores, and a driving device and a limiting device are disposed in the base body.

[0008] Furthermore, the driving device includes a rotating sleeve, a movable connecting rod, and a transmission device. The rotating sleeve is mounted on the base, the movable connecting rod slides inside the rotating sleeve, and the movable connecting rod drives the clamping device to clamp the wire core through the transmission device. The limiting device restricts the rotation of the rotating sleeve.

[0009] Furthermore, the transmission device includes an internal gear ring, a fixed gear, and a transmission gear. The internal gear ring is mounted on the movable connecting rod, the fixed gear is mounted inside the base, and the transmission gear is mounted inside the base to drive the clamping device. Both the internal gear ring and the transmission gear mesh with the fixed gear.

[0010] Furthermore, the limiting device includes a mounting ring, mounting holes, a limiting component, and a limiting ring. The mounting ring is disposed on the rotating sleeve, and the base is provided with two limiting rings. The mounting ring is provided with multiple mounting holes, and the mounting ring is provided with a limiting component corresponding to the number of mounting holes. The limiting component and the limiting ring cooperate to limit the rotation of the rotating sleeve.

[0011] Furthermore, the limiting assembly includes a movable pin, a ball end, a fixed sleeve, a spring, a limiting rod, and a limiting groove. The fixed sleeve is disposed on the mounting ring, the movable pin slides inside the fixed sleeve and the mounting ring, the ball end is disposed on the movable pin and placed inside the mounting hole, the spring is disposed between the movable pin and the fixed sleeve, the limiting rod is disposed on the ball end, and multiple limiting grooves are disposed on the limiting ring. The limiting rod enters the limiting groove to restrict the rotation of the mounting ring, thereby restricting the rotation of the rotating sleeve.

[0012] Furthermore, the clamping device includes a lower clamping device and an upper clamping device. The moving connecting rod drives the lower clamping device to clamp downwards, and the transmission gear drives the upper clamping device to clamp upwards.

[0013] Furthermore, the lower clamping device includes a threaded cavity, a movable threaded cylinder, a rotating cylinder, an inclined cavity, a first inclined sliding groove, a first sliding seat, a first pressing inclined block, a first sliding groove, and a first limiting ring. The threaded cavity is disposed inside the seat body, the movable threaded cylinder is disposed inside the threaded cavity, the movable connecting rod is disposed on the movable threaded cylinder, the rotating cylinder is disposed inside the movable threaded cylinder, the inclined cavity is disposed on the rotating cylinder, the first inclined sliding groove is disposed inside the rotating cylinder, the first sliding seat slides inside the first inclined sliding groove, the first pressing inclined block is disposed on the first sliding seat, the first pressing inclined block slides inside the first sliding groove, and the first limiting ring is disposed inside the seat body to restrict the first pressing inclined block from moving toward the rotating sleeve.

[0014] Furthermore, the upper clamping device includes a threaded hole, a moving rod, a threaded surface, a moving cone, a second inclined sliding groove, a second moving seat, a second pressing inclined block, a second sliding groove, and a second limiting ring. The threaded hole is located inside the seat body, and the moving rod is located inside the threaded hole via the threaded surface. A transmission gear drives the moving rod to rotate, and the transmission gear can move laterally on the moving rod. The moving cone is located on the moving rod, and the second inclined sliding groove is located inside the moving cone. The second moving seat slides inside the second inclined sliding groove, and the second pressing inclined block is located on the second moving seat and slides inside the second sliding groove. The second limiting ring is located inside the seat body to restrict the movement of the second pressing inclined block towards the rotating sleeve.

[0015] Furthermore, the second sliding groove and the first sliding groove are connected.

[0016] The advantages of this invention are:

[0017] This invention involves dividing the cable core into multiple parts and inserting them into the connector, placing them at the center of the clamping device. Then, multiple square tubes are inserted into the limiting device to release the restriction on the driving device. The square tubes are then rotated to drive the limiting device to rotate, which in turn drives the driving device to rotate. The rotating driving device drives the clamping device to tighten and squeeze the cable core. The square tubes are then pulled out, causing the limiting device to limit the driving device again, thus limiting the clamping device. The clamping device can also be removed from the cable by rotating the driving device in the opposite direction for repeated use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 Cross-sectional view of the overall structure of the present invention Figure 1 ;

[0020] Figure 3 Cross-sectional view of the overall structure of the present invention Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the connector structure of the present invention;

[0022] Figure 5 This is a cross-sectional view of the connector of the present invention;

[0023] Figure 6 This is a schematic diagram of the limiting device structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the clamping device structure of the present invention;

[0025] Figure 8 This is a cross-sectional view of the clamping device of the present invention;

[0026] Figure 9 This is a schematic diagram of the lower clamping device structure of the present invention;

[0027] Figure 10 This is a cross-sectional view of the lower clamping device of the present invention;

[0028] Figure 11 This is a schematic diagram of the upper clamping device structure of the present invention;

[0029] Figure 12 This is a cross-sectional view of the upper clamping device of the present invention;

[0030] Figure 13 This is a partial structural diagram of the clamping device of the present invention;

[0031] Figure 14 This is a schematic diagram of the limiting groove structure of the present invention;

[0032] Figure 15 This is a schematic diagram of the limiting component structure of the present invention;

[0033] Explanation of markings in the diagram:

[0034] Connecting seat 1; seat body 1-1; mounting hole 1-2; sealing sleeve 1-3; wire core insertion hole 1-4; driving device 2; rotating sleeve 2-1; moving connecting rod 2-2; transmission device 2-3; internal gear ring 2-3-1; fixed gear 2-3-2; transmission gear 2-3-3; limiting device 3; mounting ring 3-1; mounting hole 3-2; limiting assembly 3-3; moving bolt 3-3-1; ball end 3-3-2; fixed sleeve 3-3-3; spring 3-3-4; limiting rod 3-3-5; limiting groove 3-3-6; limiting ring 3-4; clamping device 4; lower clamping device 4-1; Threaded cavity 4-1-1; movable threaded cylinder 4-1-2; rotating cylinder 4-1-3; inclined cavity 4-1-4; first inclined sliding groove 4-1-5; first sliding seat 4-1-6; first pressing inclined block 4-1-7; first sliding groove 4-1-8; first limiting ring 4-1-9; upper clamping device 4-2; threaded hole 4-2-1; moving rod 4-2-2; threaded surface 4-2-3; moving cone 4-2-4; second inclined sliding groove 4-2-5; second moving seat 4-2-6; second pressing inclined block 4-2-7; second sliding groove 4-2-8; second limiting ring 4-2-9. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] like Figures 1-15As shown, a high-voltage cable connection device includes a connecting seat 1 and a clamping device 4. The connecting seat 1 is provided with two clamping devices 4 inside. The two clamping devices 4 are located at both ends of the connecting seat 1. The connecting seat 1 is provided with a driving device 2 for driving the clamping devices 4 to clamp. The connecting seat 1 is provided with a limiting device 3 for limiting the rotation of the driving device 2.

[0038] The cable core is divided into multiple parts and inserted into the connector 1, which is then placed in the center of the clamping device 4. Then, multiple square tubes are inserted into the limiting device 3 to release the restriction on the driving device 2. The square tubes are then rotated to drive the limiting device 3 to rotate, which in turn drives the driving device 2 to rotate. The rotating driving device 2 drives the clamping device 4 to tighten and squeeze the core. Then, the square tubes are pulled out, which again causes the limiting device 3 to limit the driving device 2, thereby limiting the clamping device 4. The clamping device 4 can also be removed from the cable by rotating the driving device 2 in the opposite direction for repeated use.

[0039] Among them, such as Figures 1-15 As shown, the connecting seat 1 includes a seat body 1-1, mounting holes 1-2, sealing sleeves 1-3, and wire core insertion holes 1-4. The seat body 1-1 has mounting holes 1-2 at both ends for mounting the sealing sleeves 1-3, and wire core insertion holes 1-4 at both ends for inserting cable cores. The seat body 1-1 is provided with a clamping device 4 for clamping the wire cores. A driving device 2 and a limiting device 3 are provided in the seat body 1-1.

[0040] Among them, such as Figures 1-15 As shown, the driving device 2 includes a rotating sleeve 2-1, a movable connecting rod 2-2, and a transmission device 2-3. The rotating sleeve 2-1 is mounted on the base 1-1. The movable connecting rod 2-2 slides inside the rotating sleeve 2-1. The movable connecting rod 2-2 drives the clamping device 4 to clamp the wire core through the transmission device 2-3. The limiting device 3 restricts the rotation of the rotating sleeve 2-1.

[0041] Rotating sleeve 2-1 drives movable connecting rod 2-2 to rotate, movable connecting rod 2-2 drives transmission device 2-3, and movable connecting rod 2-2 and transmission device 2-3 drive the cable core to be clamped and fixed.

[0042] Among them, such as Figures 1-15 As shown, the transmission device 2-3 includes an internal gear ring 2-3-1, a fixed gear 2-3-2, and a transmission gear 2-3-3. The internal gear ring 2-3-1 is mounted on the movable connecting rod 2-2, the fixed gear 2-3-2 is mounted inside the seat 1-1, and the transmission gear 2-3-3 is mounted inside the seat 1-1 to drive the clamping device 4. Both the internal gear ring 2-3-1 and the transmission gear 2-3-3 mesh with the fixed gear 2-3-2.

[0043] The movable connecting rod 2-2 drives the internal gear ring 2-3-1 to rotate. The internal gear ring 2-3-1 drives the transmission gear 2-3-3 to rotate through the fixed gear 2-3-2. The rotating transmission gear 2-3-3 drives the clamping device 4.

[0044] Among them, such as Figures 1-15 As shown, the limiting device 3 includes a mounting ring 3-1, mounting holes 3-2, a limiting component 3-3, and a limiting ring 3-4. The mounting ring 3-1 is disposed on the rotating sleeve 2-1, and the seat 1-1 is provided with two limiting rings 3-4. The mounting ring 3-1 is provided with multiple mounting holes 3-2, and the mounting ring 3-1 is provided with a limiting component 3-3 corresponding to the number of mounting holes 3-2. The limiting component 3-3 and the limiting ring 3-4 cooperate to limit the rotation of the rotating sleeve 2-1.

[0045] Insert the square tube into the mounting hole 3-2 to squeeze the limiting component 3-3 and the limiting ring 3-4 to separate them. Then rotate the square tube to drive the mounting ring 3-1 to rotate, and the mounting ring 3-1 drives the rotating sleeve 2-1 to rotate.

[0046] Among them, such as Figures 1-15 As shown, the limiting component 3-3 includes a movable bolt 3-3-1, a ball end 3-3-2, a fixed sleeve 3-3-3, a spring 3-3-4, a limiting rod 3-3-5, and limiting grooves 3-3-6. The fixed sleeve 3-3-3 is disposed on the mounting ring 3-1. The movable bolt 3-3-1 slides inside the fixed sleeve 3-3-3 and the mounting ring 3-1. The ball end 3-3-2 is disposed on the movable bolt 3-3-1 and placed inside the mounting hole 3-2. The spring 3-3-4 is disposed between the movable bolt 3-3-1 and the fixed sleeve 3-3-3. The limiting rod 3-3-5 is disposed on the ball end 3-3-2. Multiple limiting grooves 3-3-6 are disposed on the limiting ring 3-4. The limiting rod 3-3-5 enters the limiting groove 3-3-6 to restrict the rotation of the mounting ring 3-1, thereby restricting the rotation of the rotating sleeve 2-1.

[0047] When the square tube is inserted into the mounting hole 3-2, it will push the limiting rod 3-3-5 with the ball end 3-3-2 to move to both sides. The moving limiting rod 3-3-5 will drive the limiting rod 3-3-5 to move and disengage from the limiting groove 3-3-6 to release the limiting.

[0048] Among them, such as Figures 1-15 As shown, the clamping device 4 includes a lower clamping device 4-1 and an upper clamping device 4-2. The movable connecting rod 2-2 drives the lower clamping device 4-1 to clamp downward, and the transmission gear 2-3-3 drives the upper clamping device 4-2 to clamp upward.

[0049] The distance between the lower clamping device 4-1 and the upper clamping device 4-2 allows for the use of wire cores of a certain size.

[0050] Among them, such asFigures 1-15 As shown, the lower clamping device 4-1 includes a threaded cavity 4-1-1, a movable threaded cylinder 4-1-2, a rotating cylinder 4-1-3, an inclined cavity 4-1-4, a first inclined sliding groove 4-1-5, a first sliding seat 4-1-6, a first pressing inclined block 4-1-7, a first sliding groove 4-1-8, and a first limiting ring 4-1-9. The threaded cavity 4-1-1 is located inside the seat body 1-1, the movable threaded cylinder 4-1-2 is located inside the threaded cavity 4-1-1, the movable connecting rod 2-2 is located on the movable threaded cylinder 4-1-2, and the rotating cylinder 4-1-3... The inclined cavity 4-1-4 is located inside the movable threaded cylinder 4-1-2. The first inclined sliding groove 4-1-5 is located inside the rotating cylinder 4-1-3. The first sliding seat 4-1-6 slides inside the first inclined sliding groove 4-1-5. The first extrusion inclined block 4-1-7 is located on the first sliding seat 4-1-6 and slides inside the first sliding groove 4-1-8. The first limiting ring 4-1-9 is located inside the seat 1-1 to restrict the first extrusion inclined block 4-1-7 from moving toward the rotating sleeve 2-1.

[0051] The rotating sleeve 2-1 drives the movable threaded cylinder 4-1-2 to rotate via the movable connecting rod 2-2. The rotating movable threaded cylinder 4-1-2 and the threaded cavity 4-1-1 cooperate to move the movable threaded cylinder 4-1-2. The moving movable threaded cylinder 4-1-2 drives the rotating cylinder 4-1-3 to move. The moving rotating cylinder 4-1-3 presses the first pressing inclined block 4-1-7 through the inclined cavity 4-1-4 and slides it towards the center position inside the first sliding groove 4-1-8. The first limiting ring 4-1-9 restricts the first pressing inclined block 4-1-7 from moving outward and then moving it back to the position of the rotating sleeve 2-1.

[0052] Among them, such as Figures 1-15As shown, the upper clamping device 4-2 includes a threaded hole 4-2-1, a moving rod 4-2-2, a threaded surface 4-2-3, a moving cone 4-2-4, a second inclined sliding groove 4-2-5, a second moving seat 4-2-6, a second pressing inclined block 4-2-7, a second sliding groove 4-2-8, and a second limiting ring 4-2-9. The threaded hole 4-2-1 is located inside the seat body 1-1. The moving rod 4-2-2 is located inside the threaded hole 4-2-1 through the threaded surface 4-2-3. The transmission gear 2-3-3 drives the moving rod 4-2-2 to rotate. -3 can move laterally on the moving rod 4-2-2. The moving cone 4-2-4 is set on the moving rod 4-2-2. The second inclined sliding groove 4-2-5 is set inside the moving cone 4-2-4. The second moving seat 4-2-6 slides inside the second inclined sliding groove 4-2-5. The second extrusion inclined block 4-2-7 is set on the second moving seat 4-2-6. The second extrusion inclined block 4-2-7 slides inside the second sliding groove 4-2-8. The second limiting ring 4-2-9 is set inside the seat 1-1 to restrict the movement of the second extrusion inclined block 4-2-7 toward the rotating sleeve 2-1.

[0053] The rotating movable connecting rod 2-2 drives the internal gear ring 2-3-1 to rotate. The internal gear ring 2-3-1 drives the transmission gear 2-3-3 to rotate through the fixed gear 2-3-2. The rotating transmission gear 2-3-3 drives the movable rod 4-2-2 to rotate. The rotating movable rod 4-2-2 and the threaded hole 4-2-1 cooperate to make the movable rod 4-2-2 move. The moving movable rod 4-2-2 causes the movable cone 4-2-4 to move. The moving movable cone 4-2-4 causes the second extrusion inclined block 4-2-7 to move towards the center inside the second sliding groove 4-2-8 and the first extrusion inclined block 4-1-7 to move to extrude and fix the wire core. The second limiting ring 4-2-9 resets the second sliding groove 4-2-8 to limit the lateral movement.

[0054] Among them, such as Figures 1-15 As shown, the second sliding groove 4-2-8 and the first sliding groove 4-1-8 are connected.

[0055] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A high-voltage cable connection device, comprising a connecting seat (1) and clamping devices (4), wherein the connecting seat (1) is provided with two clamping devices (4), characterized in that, The two clamping devices (4) are placed at both ends of the connecting seat (1). The connecting seat (1) is provided with a driving device (2) for driving the clamping device (4) to clamp, and a limiting device (3) for limiting the rotation of the driving device (2) is provided on the connecting seat (1). The connecting seat (1) includes a seat body (1-1), mounting holes (1-2), sealing sleeves (1-3), and wire core insertion holes (1-4). The seat body (1-1) has mounting holes (1-2) at both ends for mounting the sealing sleeves (1-3), and wire core insertion holes (1-4) at both ends for inserting cable cores. The seat body (1-1) is provided with a clamping device (4) for clamping the wire cores. A driving device (2) and a limiting device (3) are provided in the seat body (1-1). The driving device (2) includes a rotating sleeve (2-1), a movable connecting rod (2-2), and a transmission device (2-3). The rotating sleeve (2-1) is mounted on the base (1-1). The movable connecting rod (2-2) slides inside the rotating sleeve (2-1). The movable connecting rod (2-2) drives the clamping device (4) to clamp the wire core through the transmission device (2-3). The limiting device (3) restricts the rotation of the rotating sleeve (2-1). The limiting device (3) includes a mounting ring (3-1), mounting holes (3-2), a limiting component (3-3), and a limiting ring (3-4). The mounting ring (3-1) is disposed on the rotating sleeve (2-1), and the seat (1-1) is provided with two limiting rings (3-4). The mounting ring (3-1) is provided with multiple mounting holes (3-2), and the mounting ring (3-1) is provided with a limiting component (3-3) corresponding to the number of mounting holes (3-2). The limiting component (3-3) and the limiting ring (3-4) cooperate to limit the rotation of the rotating sleeve (2-1). The limiting assembly (3-3) includes a movable pin (3-3-1), a ball end (3-3-2), a fixed sleeve (3-3-3), a spring (3-3-4), a limiting rod (3-3-5), and a limiting groove (3-3-6). The fixed sleeve (3-3-3) is mounted on the mounting ring (3-1), and the movable pin (3-3-1) slides inside the fixed sleeve (3-3-3) and the mounting ring (3-1). The ball end (3-3-2) is positioned on the movable pin (3-3-1). The spring (3-3-4) is placed inside the mounting hole (3-2) on the ball end (3-3-1). The spring (3-3-4) is set between the movable bolt (3-3-1) and the fixed sleeve (3-3-3). The limiting rod (3-3-5) is set on the ball end (3-3-2). Multiple limiting grooves (3-3-6) are set on the limiting ring (3-4). The limiting rod (3-3-5) enters the limiting groove (3-3-6) to restrict the rotation of the mounting ring (3-1) and thus restrict the rotation of the rotating sleeve (2-1).

2. The high-voltage cable connection device according to claim 1, characterized in that, The transmission device (2-3) includes an internal gear ring (2-3-1), a fixed gear (2-3-2), and a transmission gear (2-3-3). The internal gear ring (2-3-1) is mounted on the movable connecting rod (2-2), the fixed gear (2-3-2) is mounted inside the seat (1-1), and the transmission gear (2-3-3) is mounted inside the seat (1-1) to drive the clamping device (4). Both the internal gear ring (2-3-1) and the transmission gear (2-3-3) mesh with the fixed gear (2-3-2).

3. The high-voltage cable connection device according to claim 1, characterized in that, The clamping device (4) includes a lower clamping device (4-1) and an upper clamping device (4-2). The movable connecting rod (2-2) drives the lower clamping device (4-1) to clamp downward, and the transmission gear (2-3-3) drives the upper clamping device (4-2) to clamp upward.

4. A high-voltage cable connection device according to claim 3, characterized in that, The lower clamping device (4-1) includes a threaded cavity (4-1-1), a movable threaded cylinder (4-1-2), a rotating cylinder (4-1-3), an inclined cavity (4-1-4), a first inclined sliding groove (4-1-5), a first sliding seat (4-1-6), a first pressing inclined block (4-1-7), a first sliding groove (4-1-8), and a first limiting ring (4-1-9). The threaded cavity (4-1-1) is located inside the seat body (1-1), the movable threaded cylinder (4-1-2) is located inside the threaded cavity (4-1-1), the movable connecting rod (2-2) is located on the movable threaded cylinder (4-1-2), and the rotating cylinder (4-1-3)... The inclined cavity (4-1-4) is located inside the movable threaded cylinder (4-1-2), the first inclined sliding groove (4-1-5) is located inside the rotating cylinder (4-1-3), the first sliding seat (4-1-6) slides inside the first inclined sliding groove (4-1-5), the first extrusion inclined block (4-1-7) is located on the first sliding seat (4-1-6), the first extrusion inclined block (4-1-7) slides inside the first sliding groove (4-1-8), and the first limiting ring (4-1-9) is located inside the seat body (1-1) to restrict the first extrusion inclined block (4-1-7) from moving toward the rotating sleeve (2-1).

5. A high-voltage cable connection device according to claim 3, characterized in that, The upper clamping device (4-2) includes a threaded hole (4-2-1), a moving rod (4-2-2), a threaded surface (4-2-3), a moving cone (4-2-4), a second inclined sliding groove (4-2-5), a second moving seat (4-2-6), a second pressing inclined block (4-2-7), a second sliding groove (4-2-8), and a second limiting ring (4-2-9). The threaded hole (4-2-1) is located inside the seat body (1-1), and the moving rod (4-2-2) is located inside the threaded hole (4-2-1) through the threaded surface (4-2-3). The transmission gear (2-3-3) drives the moving rod (4-2-2) to rotate. -3) The moving rod (4-2-2) can move laterally. The moving cone (4-2-4) is set on the moving rod (4-2-2). The second inclined sliding groove (4-2-5) is set inside the moving cone (4-2-4). The second moving seat (4-2-6) slides inside the second inclined sliding groove (4-2-5). The second extrusion inclined block (4-2-7) is set on the second moving seat (4-2-6). The second extrusion inclined block (4-2-7) slides inside the second sliding groove (4-2-8). The second limiting ring (4-2-9) is set inside the seat body (1-1) to restrict the movement of the second extrusion inclined block (4-2-7) towards the rotating sleeve (2-1).

6. A high-voltage cable connection device according to claim 5, characterized in that, The second sliding groove (4-2-8) and the first sliding groove (4-1-8) are connected.

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