Withstand voltage test wiring device of high-voltage pulse low-inductance cable

Abstract

The invention relates to the technical field of cables, in particular to a high-voltage pulse low-inductance cable withstand voltage test wiring device which comprises a base, a bottom plate strip is fixedly connected to the middle of one side face of the base, and a vertically-arranged vertical plate is fixedly connected to the end, away from the base, of the bottom plate strip. The upper end of the vertical plate is in threaded connection with a threaded rod parallel to the bottom plate strip, one end of the threaded rod is connected with a conductive outer barrel through a connecting piece, and a conductive inner barrel which is concentric with the outer barrel and arranged on an inner conductor in a cable in a sleeving mode is installed in the outer barrel. A hollow conical head is fixedly connected to the end, away from the threaded rod, of the inner barrel, and an inclined blade used for cutting an inner insulating layer is fixedly connected between the conical head and the inner barrel. And an art knife does not need to cut components at the end part of the cable layer by layer, so that the wiring efficiency is improved.

Description

Technical Field

[0001] The invention discloses a withstand voltage test wiring device for a high-voltage pulse low-inductance cable, belonging to the technical field of cables. Background Art

[0002] High-voltage pulse low-inductance cable includes outer sheath, outer shield, inner sheath, inner shield, inner insulation and inner conductor. After production, high-voltage pulse low-inductance cable needs to undergo a withstand voltage test, that is, high-voltage pulse low-inductance cable should be able to withstand DC 6000V, 1min power frequency voltage test without breakdown. During the withstand voltage test of high-voltage pulse low-inductance cables, it is necessary to connect the high-voltage pulse low-inductance cables. At present, the common practice on the market is to use a utility knife to peel off the outer skin of the head and tail ends of the cable, and then connect the withstand voltage connecting wire to the cable for withstand voltage test. This method has low efficiency during the operation process, and it is necessary to use a knife to peel the outer skin and inner skin, and it is easy to scratch the hands during the operation, which poses a safety hazard. Therefore, the conductive column is often inserted into the cable and contacts the inner conductor in the cable. However, the gap between the inner conductor and the inner insulation layer in the cable is small. Therefore, in order to facilitate the insertion of the conductive column in the cable, the diameter of the conductive column is generally small, that is, the conductive column is thinner. On the one hand, the thinner conductive column has poor hardness, and on the other hand, its contact area with the inner conductor is smaller. Summary of the invention

[0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a high-voltage pulse low-inductance cable withstand voltage test wiring device to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: a withstand voltage test wiring device for a high-voltage pulse low-inductance cable, comprising a base, a clamping mechanism for limiting the position of the cable end is installed on the upper surface of the base, a bottom plate is connected and fixed to the middle position of one side of the base, and the end of the bottom plate away from the base is connected and fixed to a vertical plate arranged vertically, and the upper end of the vertical plate is threadedly connected to a threaded rod arranged parallel to the bottom plate, one end of the threaded rod is connected to a conductive outer cylinder through a connecting piece, and the end of the threaded rod away from the outer cylinder is connected and fixed to a handle, the outer diameter of the outer cylinder is smaller than the outer diameter of the inner insulating layer in the cable, and an inner cylinder arranged concentrically with the outer cylinder and sleeved on the inner conductor in the cable is installed in the outer cylinder, and the inner diameter of the inner cylinder is the same as the outer diameter of the inner conductor, and the end of the inner cylinder away from the threaded rod is connected and fixed to a hollow conical head, and an oblique blade for cutting the inner insulating layer is connected and fixed between the conical head and the inner cylinder.

[0005] Specifically, the clamping mechanism includes a lower semicircular sleeve, a lower semicircular sleeve for limiting the position of the cable end is provided on the upper side of the base, a connecting plate is connected and fixed to the lower position of the outer surface of the lower semicircular sleeve, the lower end of the connecting plate is connected and fixed to the base, an upper semicircular sleeve matching with the lower semicircular sleeve is provided on the upper side of the lower semicircular sleeve, both ends of the upper semicircular sleeve are connected and fixed with upper connecting plates, both ends of the lower semicircular sleeve are connected and fixed with lower connecting plates, and the upper connecting plate is connected and fixed to the lower connecting plate by connecting bolts.

[0006] Specifically, the connecting piece includes a ring, a ring is sleeved on the end of the threaded rod away from the handle, a disc is provided on the side of the ring away from the vertical plate, the ring is connected and fixed to the disc by multiple screws, one end of the outer cylinder and one end of the inner cylinder are both connected and fixed to the disc, a side of the disc facing the ring is recessed to form a rectangular groove, an end of the threaded rod close to the disc is connected and fixed with a rectangular block, the rectangular block is slidably installed in the rectangular groove, the length of the rectangular block is less than the depth of the rectangular groove, two springs are symmetrically installed on a side of the rectangular block away from the threaded rod, the springs are arranged along the length direction of the threaded rod, and an end of the spring away from the rectangular block is in contact with the inner wall of the rectangular groove.

[0007] Specifically, the side of the disc facing the inner cylinder is recessed to form a circular groove, one end of the inner cylinder is fixed in the circular groove, a positioning hole is opened in the middle of the side of the rectangular block facing the ring, and the end of the threaded rod away from the handle is connected and fixed in the positioning hole.

[0008] Specifically, two symmetrically arranged blind holes are provided on a side of the rectangular block facing the spring. The blind holes are arranged along the length direction of the threaded rod, and one end of the spring extends into the blind hole.

[0009] Specifically, a conductive ring is sleeved on the outer cylinder body, the inner diameter of the conductive ring is the same as the inner diameter of the outer cylinder body, and limit rings are provided on both sides of the conductive ring along the length direction of the outer cylinder body. The limit rings are in sliding contact with the conductive ring, and the limit rings are sleeved on the outer cylinder body and connected and fixed to the outer cylinder body. A terminal block is connected and fixed to the outer surface of the conductive ring, and a plurality of small holes for inserting bolts are opened on one side of the terminal block.

[0010] Specifically, a lower semicircular threaded groove is provided in the middle position of the upper surface of the vertical plate, a top block is provided on the upper side of the vertical plate, one end of the top block is hinged to the vertical plate, and an upper semicircular threaded groove matching the lower semicircular threaded groove is provided on the lower surface of the top block, the threaded rod is threadedly connected in the space formed by the upper semicircular threaded groove and the lower semicircular threaded groove, and an upper positioning plate is connected and fixed to a side of the top block away from where it is hinged to the vertical plate, a lower positioning plate is provided on the lower side of the upper positioning plate, the lower positioning plate is connected and fixed to the vertical plate, and the upper positioning plate is connected and fixed to the lower positioning plate by connecting screws.

[0011] Beneficial effects of the present invention:

[0012] 1. Place the cable end between the upper semicircular sleeve and the lower semicircular sleeve, and then use the connecting bolts to connect the upper connecting plate and the lower connecting plate to limit the cable end in the space formed by the upper semicircular sleeve and the lower semicircular sleeve to prevent the cable end from moving at will.

[0013] 2. After the cable end is confined between the upper semicircular sleeve and the lower semicircular sleeve, the threaded rod is rotated by the handle so that the threaded rod drives the structure formed by the outer cylinder and the inner cylinder to move toward the cable direction. When the oblique blade contacts the inner insulating layer, the threaded rod is continued to be twisted. At this time, the oblique blade realizes the circumferential cutting of the inner insulating layer, and then the strip-shaped inner insulating layer enters into the space formed by the inner cylinder and the outer cylinder. Then the inner conductor separated from the inner insulating layer is inserted into the inner cylinder so that the inner conductor contacts with the inner cylinder with the maximum contact area. There is no need to use a utility knife to cut the components at the cable end layer by layer, which improves the wiring efficiency. The threaded rod is rotated in the opposite direction to move the structure formed by the inner cylinder and the outer cylinder out of the cable. At the same time, the strip-shaped inner insulating layer re-enters the cable and is used to support the inner conductor to prevent the inner conductor from bending and deforming due to extrusion.

[0014] 3. Make the rectangular block connected and fixed at one end of the threaded rod slide and install it in the rectangular groove in the disc, and then use the collar to limit the rectangular block in the rectangular groove. When the threaded rod rotates, the rectangular block and the rectangular groove cooperate with each other to drive the disc to rotate. Because the inclined blade cuts the inner insulating layer in a circular manner, the end of the inner insulating layer will be uneven. Blocked by the protruding part of the end of the inner insulating layer, the outer cylinder cannot continue to enter the cable, resulting in a large resistance to twisting the threaded rod. When the threaded rod is twisted, the threaded rod drives the rectangular block to move to the innermost side of the rectangular groove. At this time, the spring is in a compressed state, thereby preventing the end of the outer cylinder from fitting tightly with the inner insulating layer and causing excessive resistance to twisting the threaded rod. After the inclined blade cuts the inner insulating layer in one circle, the structure formed by the inner cylinder and the outer cylinder enters the cable. Under the action of the spring rebound force, the threaded rod is prevented from rotating at will.

[0015] 4. A conductive ring is sleeved on the inner cylinder, and two limit rings are used to limit the relative position of the conductive ring and the inner cylinder. The conductive ring is rotated so that the orientation of the terminal block connected and fixed to the conductive ring meets the wiring requirements, thereby achieving the purpose of conveniently adjusting the orientation of the terminal block.

[0016] 5. Screw the threaded rod into the space formed by the upper semicircular thread groove and the lower semicircular thread groove to complete the threaded connection between the threaded rod and the vertical plate. When small debris enters the thread pattern and causes the resistance to twisting the threaded rod to increase, separate the upper positioning plate and the lower positioning plate, then take the threaded rod out of the space formed by the upper semicircular thread groove and the lower semicircular thread groove and clean up the small debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 It is a structural schematic diagram of a high-voltage pulse low-inductance cable withstand voltage test wiring device of the present invention;

[0019] Figure 2 It is a schematic diagram of the assembly of an inner cylinder, an inclined blade, an outer cylinder and a disc in a withstand voltage test wiring device for a high-voltage pulse low-inductance cable of the present invention;

[0020] Figure 3 It is a schematic diagram of the assembly of an inner cylinder, an inclined blade and an outer cylinder in a withstand voltage test wiring device for a high-voltage pulse low-inductance cable of the present invention;

[0021] Figure 4 It is a cross-sectional view of a rectangular block in a withstand voltage test wiring device for a high-voltage pulse low-inductance cable of the present invention;

[0022] Figure 5 It is a cross-sectional view of a disc in a withstand voltage test wiring device for a high-voltage pulse low-inductance cable of the present invention;

[0023] Figure 6 It is a schematic diagram of the assembly of the top block and the vertical plate in a withstand voltage test wiring device for a high-voltage pulse low-inductance cable of the present invention;

[0024] In the figure: 1, base, 2, connecting plate, 3, bottom plate strip, 4, limiting ring, 5, vertical plate, 6, threaded rod, 7, handle, 8, top block, 9, collar, 10, disk, 11, terminal block, 12, conductive ring, 13, outer cylinder, 14, inner conductor, 15, inner insulating layer, 16, cable, 17, upper semicircular sleeve, 18, connecting bolt, 19, upper connecting plate, 20, lower connecting plate, 21, lower semicircular sleeve, 22, inner cylinder, 23, oblique blade, 24, conical head, 25, spring, 26, positioning hole, 27, rectangular block, 28, rectangular groove, 29, blind hole, 30, circular groove, 31, lower semicircular threaded groove, 32, lower positioning plate, 33, upper positioning plate, 34, upper semicircular threaded groove. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] Embodiment 1: A common practice on the market is to use a utility knife to peel off the outer skin of the head end and the tail end of the cable 16, and then connect a withstand voltage connection line to the cable 16 for a withstand voltage test. This method has low efficiency in the operation process, and a knife is required to peel the outer skin and the inner skin, and it is easy to scratch the hands during the operation, which poses a safety hazard. Therefore, a method of inserting a conductive column into the cable 16 and contacting the inner conductor 14 in the cable 16 is often adopted. However, the gap between the inner conductor 14 and the inner insulating layer 15 in the cable 16 is small. Therefore, in order to facilitate the insertion of the conductive column into the cable 16, the diameter of the conductive column is generally small, that is, the conductive column is thinner. The thinner conductive column has poor hardness on the one hand, and a smaller contact area with the inner conductor 14 on the other hand;

[0027] To solve the above problems, please refer to Figure 1 , Figure 2 and Figure 3 The present invention provides a technical solution: a high-voltage pulse low-inductance cable withstand voltage test wiring device, comprising a base 1, a lower semicircular sleeve 21 for limiting the end position of a cable 16 is provided on the upper side of the base 1, a connecting plate 2 is connected and fixed to the lower position of the outer surface of the lower semicircular sleeve 21, so that the lower end of the connecting plate 2 is connected and fixed to the base 1, and the connection and fixation of the lower semicircular sleeve 21 and the base 1 are completed, an upper semicircular sleeve 17 matching with the lower semicircular sleeve 21 is provided on the upper side of the lower semicircular sleeve 21, and both ends of the upper semicircular sleeve 17 are connected and fixed with the upper connecting plate 2. Plate 19, both ends of the lower semicircular sleeve 21 are connected and fixed with the lower connecting plate 20, wherein the upper connecting plate 19 is connected and fixed to the lower connecting plate 20 by connecting bolts 18, completing the connection and fixation of the upper semicircular sleeve 17 and the lower semicircular sleeve 21, placing the end of the cable 16 between the upper semicircular sleeve 17 and the lower semicircular sleeve 21, and then connecting the upper connecting plate 19 and the lower connecting plate 20 by connecting bolts 18, so as to limit the end of the cable 16 in the space formed by the upper semicircular sleeve 17 and the lower semicircular sleeve 21, and prevent the end of the cable 16 from moving at will.

[0028] A bottom plate strip 3 is connected and fixed to the middle position of one side of the base 1, and a vertically arranged vertical plate 5 is connected and fixed to the end of the bottom plate strip 3 away from the base 1. The bottom plate strip 3 serves to connect the base 1 and the vertical plate 5. The upper end of the vertical plate 5 is threadedly connected to a threaded rod 6 arranged parallel to the bottom plate strip 3, and the vertical plate 5 provides a supporting carrier for the threaded rod 6.

[0029] One end of the threaded rod 6 is connected to a conductive outer cylinder 13, and the end of the threaded rod 6 away from the outer cylinder 13 is connected and fixed with a handle 7. The outer diameter of the outer cylinder 13 is smaller than the outer diameter of the inner insulating layer 15 in the cable 16. A conductive inner cylinder 22 is installed in the outer cylinder 13, which is concentrically arranged with the outer cylinder 13 and sleeved on the inner conductor 14 in the cable 16. The inner diameter of the inner cylinder 22 is the same as the outer diameter of the inner conductor 14. A hollow conical head 24 is connected and fixed to the end of the inner cylinder 22 away from the threaded rod 6, and an oblique blade 23 for cutting the inner insulating layer 15 is connected and fixed between the conical head 24 and the inner cylinder 22. The design of the conical head 24 makes it easy for the oblique blade 23 to cut off the inner insulating layer 15 on the surface of the inner conductor 14 to avoid the inner insulating layer 15 from adhering to the surface of the inner conductor 14. After the end of the cable 16 is restricted between the upper semicircular sleeve 17 and the lower semicircular sleeve 21, the threaded rod 6 is rotated using the handle 7. The threaded rod 6 drives the structure formed by the outer cylinder 13 and the inner cylinder 22 to move toward the cable 16. When the oblique blade 23 contacts the inner insulating layer 15, the threaded rod 6 is continued to be twisted. At this time, the oblique blade 23 realizes the circumcision of the inner insulating layer 15, and then the strip-shaped inner insulating layer 15 enters the space formed by the inner cylinder 22 and the outer cylinder 13. Then, the inner conductor 14 separated from the inner insulating layer 15 is inserted into the inner cylinder 22, so that the inner conductor 14 contacts the inner cylinder 22 with the maximum contact area. There is no need to use a utility knife to cut the components at the end of the cable 16 layer by layer, which improves the wiring efficiency. The threaded rod 6 is rotated in the opposite direction, so that the structure formed by the inner cylinder 22 and the outer cylinder 13 is moved out of the cable 16. At the same time, the strip-shaped inner insulating layer 15 re-enters the cable 16 and is used to support the inner conductor 14 to prevent the inner conductor 14 from bending and deforming due to extrusion.

[0030] Embodiment 2: Since the oblique blade 23 cuts the inner insulating layer 15 in a circular manner, the end of the inner insulating layer 15 will be uneven, and the outer cylinder 13 cannot continue to enter the cable 16 due to the blockage of the protruding part of the end of the inner insulating layer 15, resulting in a large resistance to twisting the threaded rod 6;

[0031] To solve the above problems, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 A collar 9 is sleeved on one end of the threaded rod 6 away from the handle 7, and a disc 10 is provided on the side of the collar 9 away from the vertical plate 5, wherein the collar 9 is connected and fixed to the disc 10 by multiple screws, and one end of the outer cylinder 13 and one end of the inner cylinder 22 are both connected and fixed to the disc 10, wherein a side of the disc 10 facing the inner cylinder 22 is recessed to form a circular groove 30, so that one end of the inner cylinder 22 is fixed in the circular groove 30, thereby improving the stability of the installation of the inner cylinder 22, and the disc 10 provides a support carrier for the outer cylinder 13 and the inner cylinder 22.

[0032] The side of the disc 10 facing the collar 9 is recessed to form a rectangular groove 28, and the end of the threaded rod 6 close to the disc 10 is connected and fixed with a rectangular block 27, wherein a positioning hole 26 is opened in the middle of the side of the rectangular block 27 facing the collar 9, so that the end of the threaded rod 6 away from the handle 7 is connected and fixed in the positioning hole 26, thereby improving the stability of the connection between the threaded rod 6 and the rectangular block 27.

[0033] The rectangular block 27 is slidably installed in the rectangular groove 28, wherein the length of the rectangular block 27 is less than the depth of the rectangular groove 28. Two springs 25 are symmetrically installed on the side of the rectangular block 27 away from the threaded rod 6. The springs 25 are arranged along the length direction of the threaded rod 6. One end of the spring 25 away from the rectangular block 27 contacts the inner wall of the rectangular groove 28. Two symmetrically arranged blind holes 29 are opened on the side of the rectangular block 27 facing the spring 25. The blind holes 29 are arranged along the length direction of the threaded rod 6. One end of the spring 25 extends into the blind hole 29. When the spring 25 is squeezed by the rectangular block 27 and the disc 10, it will retract into the blind hole 29 to prevent the spring 25 from being damaged by excessive squeezing. The rectangular block 27 connected and fixed at one end of the threaded rod 6 is slidably installed in the rectangular groove 28 in the disc 10, and then the rectangular block 27 is restricted in the rectangular groove 28 by the collar 9. When the threaded rod 6 rotates, the rectangular block 27 and the rectangular groove 28 cooperate with each other to drive the disc 10 to rotate. Since the oblique blade 23 cuts the inner insulating layer 15 in a circular manner, the end of the inner insulating layer 15 will be uneven. Blocked by the protruding part of the end of the inner insulating layer 15, the outer cylinder 13 cannot continue to enter the cable 16, resulting in a large resistance to twisting the threaded rod 6. When the threaded rod 6 is twisted, the threaded rod 6 drives the rectangular block 27 to move to the innermost side of the rectangular groove 28. At this time, the spring 25 is in a compressed state, thereby preventing the end of the outer cylinder 13 from fitting tightly with the inner insulating layer 15 and causing excessive resistance to twisting the threaded rod 6. After the oblique blade 23 cuts the inner insulating layer 15 in a circle, the structure formed by the inner cylinder 22 and the outer cylinder 13 enters the cable 16. Under the action of the rebound force of the spring 25, the threaded rod 6 is prevented from rotating at will.

[0034] Embodiment 3: The terminal block 11 is installed on the outer cylinder 13. Since the outer cylinder 13 rotates under the drive of the threaded rod 6, the terminal block 11 is directly fixed on the outer cylinder 13, which may cause the direction of the terminal block 11 to not meet the wiring angle requirements.

[0035] To solve the above problems, see Figure 1A conductive ring 12 is sleeved on the outer cylinder 13, and the inner diameter of the conductive ring 12 is the same as that of the outer cylinder 13. Limiting rings 4 are provided on both sides of the conductive ring 12 along the length direction of the outer cylinder 13. The limiting rings 4 are in sliding contact with the conductive ring 12. The limiting rings 4 are sleeved on the outer cylinder 13 and are connected and fixed with the outer cylinder 13. A terminal block 11 is connected and fixed to the outer surface of the conductive ring 12. A plurality of small holes for inserting bolts are opened on one side of the terminal block 11. The conductive ring 12 is sleeved on the inner cylinder 22, and the two limiting rings 4 are used to limit the relative position of the conductive ring 12 and the inner cylinder 22. The conductive ring 12 is rotated so that the orientation of the terminal block 11 connected and fixed to the conductive ring 12 meets the wiring needs, thereby achieving the purpose of conveniently adjusting the orientation of the terminal block 11.

[0036] Embodiment 4: The threaded rod 6 is screwed into the closed screw hole provided on the vertical plate 5. When small debris enters the thread pattern in the screw hole, it not only affects the screwing of the threaded rod 6, but also makes it more troublesome to clean the small debris entering the thread pattern in the screw hole.

[0037] To solve the above problems, please refer to Figure 1 and Figure 6 A lower semicircular thread groove 31 is provided at the middle position of the upper surface of the vertical plate 5, and a top block 8 is provided on the upper side of the vertical plate 5, wherein one end of the top block 8 is hinged to the vertical plate 5, and an upper semicircular thread groove 34 matching the lower semicircular thread groove 31 is provided on the lower surface of the top block 8. The threaded rod 6 is threadedly connected in the space formed by the upper semicircular thread groove 34 and the lower semicircular thread groove 31. An upper positioning plate 33 is connected and fixed to the top block 8 away from the side thereof hinged to the vertical plate 5, and a lower positioning plate 32 is provided on the lower side of the upper positioning plate 33, and the lower positioning plate 32 is connected and fixed to the vertical plate 5 so that the upper positioning plate 33 is fixed to the vertical plate 5. The positioning plate 33 is connected and fixed to the lower positioning plate 32 by connecting screws, completing the fixation of the relative position of the top block 8 and the vertical plate 5, so that the threaded rod 6 is screwed into the space formed by the upper semicircular thread groove 34 and the lower semicircular thread groove 31, completing the threaded connection between the threaded rod 6 and the vertical plate 5. When small debris enters the thread pattern and causes the resistance to twisting the threaded rod 6 to increase, after separating the upper positioning plate 33 and the lower positioning plate 32, the threaded rod 6 can be taken out from the space formed by the upper semicircular thread groove 34 and the lower semicircular thread groove 31 and the small debris can be cleaned.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-voltage pulse low-inductance cable withstand voltage test wiring device, comprising a base (1), characterized in that: A clamping mechanism for limiting the end position of the cable (16) is installed on the upper surface of the base (1); a bottom plate (3) is connected and fixed to the middle position of a side surface of the base (1); an end of the bottom plate (3) away from the base (1) is connected and fixed to a vertically arranged vertical plate (5); a threaded rod (6) arranged parallel to the bottom plate (3) is threadedly connected to the upper end of the vertical plate (5); one end of the threaded rod (6) is connected to a conductive outer cylinder (13) through a connecting piece; an end of the threaded rod (6) away from the outer cylinder (13) is connected and fixed to a handle (7); The outer diameter of the cylinder (13) is smaller than the outer diameter of the inner insulating layer (15) in the cable (16); an inner cylinder (22) is installed inside the outer cylinder (13) and is arranged concentrically with the outer cylinder (13) and sleeved on the inner conductor (14) in the cable (16) to conduct electricity; the inner diameter of the inner cylinder (22) is the same as the outer diameter of the inner conductor (14); a hollow conical head (24) is connected and fixed to one end of the inner cylinder (22) away from the threaded rod (6); and an oblique blade (23) for cutting the inner insulating layer (15) is connected and fixed between the conical head (24) and the inner cylinder (22).

2. The high-voltage pulse low-inductance cable withstand voltage test wiring device according to claim 1, characterized in that: The clamping mechanism comprises a lower semicircular sleeve (21), the upper side of the base (1) is provided with a lower semicircular sleeve (21) for limiting the end position of the cable (16), the lower part of the outer surface of the lower semicircular sleeve (21) is connected and fixed with a connecting plate (2), the lower end of the connecting plate (2) is connected and fixed to the base (1), the upper side of the lower semicircular sleeve (21) is provided with an upper semicircular sleeve (17) matched with the lower semicircular sleeve (21), both ends of the upper semicircular sleeve (17) are connected and fixed with an upper connecting plate (19), both ends of the lower semicircular sleeve (21) are connected and fixed with a lower connecting plate (20), and the upper connecting plate (19) is connected and fixed with the lower connecting plate (20) by a connecting bolt (18).

3. The high-voltage pulse low-inductance cable withstand voltage test wiring device according to claim 1, characterized in that: The connecting member comprises a collar (9), an end of the threaded rod (6) away from the handle (7) is sleeved with the collar (9), a side of the collar (9) away from the vertical plate (5) is provided with a disc (10), the collar (9) is connected and fixed to the disc (10) by a plurality of screws, one end of the outer cylinder (13) and one end of the inner cylinder (22) are both connected and fixed to the disc (10), a side of the disc (10) facing the collar (9) is recessed to form a rectangular groove (28), and the threaded rod (6) A rectangular block (27) is connected and fixed to one end close to the disc (10). The rectangular block (27) is slidably installed in the rectangular groove (28). The length of the rectangular block (27) is less than the depth of the rectangular groove (28). Two springs (25) are symmetrically installed on a side of the rectangular block (27) away from the threaded rod (6). The springs (25) are arranged along the length direction of the threaded rod (6). One end of the spring (25) away from the rectangular block (27) contacts the inner wall of the rectangular groove (28).

4. The high-voltage pulse low-inductance cable withstand voltage test wiring device according to claim 3, characterized in that: The side of the disc (10) facing the inner cylinder (22) is recessed to form a circular groove (30), one end of the inner cylinder (22) is fixed in the circular groove (30), a positioning hole (26) is provided in the middle of the side of the rectangular block (27) facing the collar (9), and one end of the threaded rod (6) away from the handle (7) is connected and fixed in the positioning hole (26).

5. The high-voltage pulse low-inductance cable withstand voltage test wiring device according to claim 3, characterized in that: Two symmetrically arranged blind holes (29) are provided on a side of the rectangular block (27) facing the spring (25). The blind holes (29) are arranged along the length direction of the threaded rod (6), and one end of the spring (25) extends into the blind hole (29).

6. The high-voltage pulse low-inductance cable withstand voltage test wiring device according to claim 1, characterized in that: A conductive ring (12) is sleeved on the outer cylinder (13), the inner diameter of the conductive ring (12) being the same as the inner diameter of the outer cylinder (13), and limiting rings (4) are provided on both sides of the conductive ring (12) along the length direction of the outer cylinder (13), the limiting rings (4) being in sliding contact with the conductive ring (12), the limiting rings (4) being sleeved on the outer cylinder (13) and connected and fixed to the outer cylinder (13), and a wiring board (11) being connected and fixed to the outer surface of the conductive ring (12), and a plurality of small holes for inserting bolts are opened on one side of the wiring board (11).

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