A crimping type terminal and a drop-out high voltage fuse

Abstract

The application is suitable for the technical field of high-voltage electrical appliances, and provides a crimping type wiring terminal and a drop type high-voltage fuse, which comprises a conductive part fixedly connected with two groups of static contacts on the drop type high-voltage fuse; the conductive part comprises a U-shaped conductive plate; the side surface of the U-shaped conductive plate is fixed with a conductive column matched with a U-shaped terminal at the end of an external wire; the U-shaped terminal is further matched with a connecting part; the conductive column is coaxially arranged with a crimping part; the crimping type wiring terminal and the drop type high-voltage fuse are limited by the U-shaped terminal and the conductive column as a pair of limiters, forming three constraints of radial positioning, axial anti-pulling and circumferential rotation stopping, completely avoiding terminal deviation, rotation and disengagement, and solving the problem of traditional wiring relying on bolt compression and easy loosening without limiting.

Description

Technical Field

[0001] This invention relates to the field of high-voltage electrical technology, and more specifically, to a crimp-type terminal block and a drop-out high-voltage fuse. Background Technology

[0002] Drop-out high-voltage fuses are core overload and short-circuit protection devices in 10kV outdoor power distribution systems. The reliability of the connection between their stationary contacts and external conductors directly affects the safe operation of the power grid. Traditional fuse terminals generally use bolt-clamping connections, relying solely on bolt pressure to hold the U-shaped conductor terminals. They lack a dedicated limiting structure for the relative displacement between the U-shaped terminals and the conductive posts, resulting in the following inherent defects:

[0003] Without axial / circumferential restraints between the U-shaped terminal and the conductive post, the external conductor is subject to wind pulling, thermal expansion and contraction, self-weight pulling, and long-term vibration. The U-shaped terminal is prone to radial movement, circumferential rotation, or even axial dislodgement along the conductive post, leading to poor contact, arcing, and overheating. At the same time, the lack of restraints between the two leads to contact surface misalignment, intermittent connection, large fluctuations in contact resistance, poor safety of high-voltage operation, difficulty in ensuring precise alignment of the U-shaped terminal and the conductive post during installation, and the absence of self-locking restraints results in frequent maintenance and high risks in the later stages. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a crimp-type terminal block and a drop-out high-voltage fuse. Using a U-shaped terminal block and a conductive post as the basic limiting pair, a triple constraint of radial positioning, axial pull-out prevention, and circumferential anti-rotation is formed, which completely avoids terminal offset, rotation, and detachment, and solves the problem that traditional wiring relies solely on bolt tightening and is prone to loosening due to lack of positioning.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A crimp-type terminal block includes a conductive part fixedly connected to two sets of stationary contacts on a drop-out high-voltage fuse; the conductive part includes a U-shaped conductive plate; a conductive post adapted to the U-shaped terminal at the end of an external conductor is fixed to the side of the U-shaped conductive plate; it also includes a connecting part adapted to the U-shaped terminal; the connecting part includes a U-shaped insulating sleeve; a U-shaped groove adapted to the U-shaped terminal is formed on the inner wall of the U-shaped insulating sleeve; an arc-shaped groove coaxial with the conductive post is formed on the side of the U-shaped insulating sleeve; a clamping member for clamping the external conductor is screwed to the bottom of the U-shaped insulating sleeve; it also includes a crimping part coaxial with the conductive post; the crimping part is adapted to the arc-shaped groove, and an axial clamping force is applied to the connecting part through the crimping part, so that the U-shaped terminal is clamped and fixed between the U-shaped conductive plate and the connecting part, ensuring that the U-shaped terminal and the conductive post always maintain a stable limiting conductive fit, resisting the axial tension and radial torque of the external conductor.

[0007] The invention is further configured as follows: A U-shaped insulating cap is symmetrically fixed to the side of the U-shaped conductive plate, which is inserted and fitted to both ends of the U-shaped insulating sleeve; two sets of coaxial arc-shaped external threaded tubes are symmetrically fixed to the bottom of the U-shaped insulating sleeve; the clamping component includes two sets of coaxially arranged semi-threaded sleeves; a connecting plate is fixed to the outer wall of each of the two semi-threaded sleeves; adjacent connecting plates are fixedly connected by fastening screws; the two coaxial semi-threaded sleeves are screwed into the arc-shaped external threaded tubes; a semi-insulating rubber ring is fixed to the end of the semi-threaded sleeve; a crimping groove adapted to the semi-insulating rubber ring is opened on the bottom surface of the U-shaped insulating sleeve; a semi-connecting tube coaxial with it is fixed to the bottom of the semi-threaded sleeve; a screw hole is opened on the outer wall of the semi-connecting tube; a screw for pressing the external wire is screwed into the screw hole.

[0008] The invention is further configured such that: two arc-shaped plates coaxially arranged with the conductive post are fixed on the outer wall of the semi-threaded sleeve; a guide tube is fixed through the outer wall of the arc-shaped plate; an insert rod is slidably arranged through the inside of the guide tube; a stop block is fixed at the end of the insert rod; a reset spring sleeved on the insert rod is connected between the stop block and the bottom end of the guide tube; and an inclined plate that slidably engages with the inner wall of the guide tube is fixed on the outer wall of the insert rod.

[0009] The invention is further configured such that: the crimping part includes a first crimping plate adapted to the arc-shaped groove; the conductive post is a threaded rod; a threaded insulating tube that is threaded to the conductive post is fixed through the side of the first crimping plate; and a first stop groove is provided on the outer wall of the first crimping plate.

[0010] The invention is further configured such that: the crimping part includes an insulating sleeve that slides with the conductive post; a crimping ring is fixed to the periphery of the insulating sleeve; an arc-shaped sleeve is fixed to the side of the crimping ring; an arc-shaped cavity is symmetrically opened on the outer wall of the arc-shaped sleeve; an arc-shaped rod that slides with the arc-shaped groove is slidably arranged inside the arc-shaped cavity; an arc-shaped spring is connected between the arc-shaped rod and the arc-shaped cavity; a second stop groove is opened on the outer wall of the arc-shaped sleeve; baffles are fixed to both opposite sides of the U-shaped insulating sleeve; ear plates that slide with the bottom surface of the baffles are fixed to both ends of the arc-shaped sleeve; and insulating blocks are symmetrically fixed to the sides of the U-shaped conductive plate; insulating branch pipes are fixed to the sides of the insulating blocks; and an arc-shaped tube adapted to the arc-shaped rod is fixed to the end of the insulating branch pipe.

[0011] The invention is further configured such that: the crimping part includes a second crimping plate adapted to the arc-shaped groove; an insulating cap adapted to the conductive post is fixedly fixed through the side of the second crimping plate; a plurality of insertion holes are uniformly opened on the outer wall of the second crimping plate; a third stop groove is opened on the outer wall of the second crimping plate; it also includes a fixing plate fixedly installed between two U-shaped insulating caps; a U-shaped seat is symmetrically fixed on the bottom surface of the fixing plate; a lifting plate is slidably arranged between the two U-shaped seats; a plurality of crimping rods are uniformly fixed on the bottom surface of the lifting plate; a ball head adapted to the corresponding insertion hole is fixed at the bottom end of the crimping rod; a handle is fixed on the surface of the fixing plate; and compression springs are symmetrically fixed between the fixing plate and the lifting plate.

[0012] A drop-out high-voltage fuse includes a fuse body, two sets of stationary contacts, and a crimp-type terminal block; the conductive part of the crimp-type terminal block is fixedly connected to the stationary contacts through a U-shaped conductive plate; external wires are electrically connected to the stationary contacts through the crimp-type terminal block.

[0013] The advantages of this invention are:

[0014] 1. This invention uses a U-shaped terminal and a conductive post as the basic limiting pair to form a triple constraint of radial positioning, axial pull-out prevention, and circumferential anti-rotation, which completely avoids terminal offset, rotation, and detachment, and solves the problem that traditional wiring relies solely on bolt tightening and is prone to loosening due to lack of positioning.

[0015] 2. The tensile force of the external conductor in this invention is dispersed and transmitted through the connecting part and the crimping part, and does not directly act on the limiting conductive surface of the U-shaped terminal and the conductive post. It can resist wind, vibration, thermal expansion and contraction and self-weight pulling, and will not loosen or break after long-term use.

[0016] 3. The pressing part and the limiting structure of this invention form a rigid + elastic composite self-locking mechanism. After installation, it automatically locks, does not reverse, and does not move backward, eliminating the need for regular inspection and tightening, thus reducing maintenance costs. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a crimp-type terminal block and a drop-out high-voltage fuse according to the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the conductive part of the present invention.

[0019] Figure 3 This is a schematic diagram of the connection part of the present invention.

[0020] Figure 4 For the present invention Figure 3 Enlarged view of region A.

[0021] Figure 5 This is a schematic diagram of the structure of the U-shaped insulating sleeve of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the connecting part and the U-shaped terminal assembly of the present invention.

[0023] Figure 7 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0024] Figure 8 This is a schematic diagram of the crimping part in Embodiment 2 of the present invention.

[0025] Figure 9 This is a structural schematic diagram of Embodiment 3 of the present invention.

[0026] Figure 10This is a schematic diagram of the crimping portion in Embodiment 3 of the present invention.

[0027] Figure 11 For the present invention Figure 10 A structural diagram from the right-hand perspective.

[0028] Figure 12 This is a schematic diagram of the structure of Embodiment 4 of the present invention.

[0029] Figure 13 This is a schematic diagram of the crimping portion in Embodiment 4 of the present invention.

[0030] In the diagram: 1. Conductive part; 2. U-shaped conductive plate; 3. U-shaped terminal; 4. Conductive post; 5. Connecting part; 6. U-shaped insulating sleeve; 7. U-shaped groove; 8. Arc groove; 9. Crimping part; 10. U-shaped insulating cover; 11. Arc-shaped external threaded tube; 12. Semi-threaded sleeve; 13. Connecting plate; 14. Semi-insulating rubber ring; 15. Crimping groove; 16. Semi-connecting tube; 17. Screw hole; 18. Arc plate; 19. Guide tube; 20. Insert rod; 21. Stop; 22. Return spring; 23. Compression spring; 24. Inclined plate; 25. First 26. Crimping plate; 27. Screw-in insulating tube; 28. First stop groove; 29. ​​Insulating sleeve; 30. Crimping ring; 31. Arc-shaped sleeve; 32. Arc-shaped cavity; 33. Arc-shaped rod; 34. Arc-shaped spring; 35. Second stop groove; 36. Baffle plate; 37. Ear plate; 38. Insulating block; 39. Insulating branch pipe; 40. Arc-shaped tube; 41. Second crimping plate; 42. Insulating cap; 43. Insertion hole; 44. Third stop groove; 45. Fixing plate; 46. U-shaped seat; 47. Lifting plate; 48. Crimping rod; 49. Ball head; 40. Handle. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0033] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0034] Example 1, please refer to Figures 1-13The present invention provides the following technical solutions:

[0035] A crimp-type terminal block, specifically, includes a conductive part 1 fixedly connected to two sets of stationary contacts on a drop-out high-voltage fuse; the conductive part 1 includes a U-shaped conductive plate 2; a conductive post 4 adapted to the U-shaped terminal 3 at the end of an external conductor is fixed on the side of the U-shaped conductive plate 2; it also includes a connecting part 5 adapted to the U-shaped terminal 3; the connecting part 5 includes a U-shaped insulating sleeve 6; a U-shaped groove 7 adapted to the U-shaped terminal 3 is opened on the inner wall of the U-shaped insulating sleeve 6; an arc-shaped groove 8 coaxial with the conductive post 4 is opened on the side of the U-shaped insulating sleeve 6; a clamping member for clamping the external conductor is screwed to the bottom of the U-shaped insulating sleeve 6.

[0036] It also includes a crimping part 9 coaxially arranged with the conductive post 4; the crimping part 9 is adapted to the arc groove 8, and the crimping part 9 applies axial clamping force to the connecting part 5, so that the U-shaped terminal 3 is clamped and fixed between the U-shaped conductive plate 2 and the connecting part 5, ensuring that the U-shaped terminal 3 and the conductive post 4 always maintain a stable limiting conductive fit, effectively resisting the axial tension and radial torque of the external wire, and preventing detachment, loosening and poor contact.

[0037] U-shaped insulating caps 10 are symmetrically fixed on the sides of the U-shaped conductive plate 2, which are inserted and matched with the two ends of the U-shaped insulating sleeve 6; two sets of coaxial arc-shaped external threaded tubes 11 are symmetrically fixed at the bottom of the U-shaped insulating sleeve 6; the clamping component includes two sets of coaxially arranged semi-threaded sleeves 12; a connecting plate 13 is fixed on the outer wall of each of the two semi-threaded sleeves 12; adjacent connecting plates 13 are fixedly connected by fastening screws; the two coaxial semi-threaded sleeves 12 are screwed into the arc-shaped external threaded tubes 11; a semi-insulating rubber ring 14 is fixed at the end of the semi-threaded sleeve 12; a crimping groove 15 adapted to the semi-insulating rubber ring 14 is opened on the bottom surface of the U-shaped insulating sleeve 6; a semi-connecting tube 16 coaxially fixed at the bottom of the semi-threaded sleeve 12; a screw hole 17 is opened on the outer wall of the semi-connecting tube 16; a screw rod for pressing the external wire is screwed into the screw hole 17.

[0038] Two arc-shaped plates 18, coaxially arranged with the conductive post 4, are fixed to the outer wall of the semi-threaded sleeve 12; a guide tube 19 is fixed through the outer wall of the arc-shaped plate 18; an insert rod 20 is slidably arranged through the inside of the guide tube 19; a stop block 21 is fixed to the end of the insert rod 20; a return spring 22 sleeved on the insert rod 20 is connected between the stop block 21 and the bottom end of the guide tube 19; an inclined plate 24 that slides with the inner wall of the guide tube 19 is fixed to the outer wall of the insert rod 20.

[0039] A drop-out high-voltage fuse includes a fuse body, two sets of stationary contacts, and a crimp-type terminal block; the conductive part 1 of the crimp-type terminal block is fixedly connected to the stationary contacts through a U-shaped conductive plate 2; external wires are electrically connected to the stationary contacts through the crimp-type terminal block.

[0040] Working principle of this embodiment:

[0041] The U-shaped conductive plates 2 on the two sets of conductive parts 1 are fixed to the two sets of stationary contacts on the drop-out high-voltage fuse by fastening bolts, thus completing the fixed installation of the conductive parts 1 and the drop-out high-voltage fuse.

[0042] Insert the U-shaped terminal 3 into the U-shaped insulating sleeve 6 along the U-shaped groove 7, place the external wire between the two half connecting tubes 16, and fix the two half connecting tubes 16 together with the fastening screw. Rotate the two half connecting tubes 16 together so that they rotate and rise along the outer wall of the two arc-shaped external threaded tubes 11 until the semi-insulating rubber ring 14 is pressed into the crimping groove 15. At this time, the semi-insulating rubber ring 14 presses the U-shaped terminal 3 into the top of the U-shaped groove 7. Tighten the screw to press the external wire, and complete the assembly of the connecting part 5 with the external wire and the U-shaped terminal 3 at the end of the wire.

[0043] The assembled U-shaped insulating sleeve 6, together with the U-shaped terminal 3, is sent into the conductive part 1, so that the U-shaped terminal 3 abuts against the conductive post 4, and the two ends of the U-shaped insulating sleeve 6 are inserted into the corresponding U-shaped insulating cover 10.

[0044] The U-shaped insulating sleeve 6 is pressed tightly onto the side of the U-shaped conductive plate 2 by the crimping part 9. At the same time, the crimping part 9 is pressed into the arc groove 8 to prevent the U-shaped terminal 3 from being pulled off by external wires, thus ensuring conductivity stability and safety in use.

[0045] Example 2, please refer to Figures 1-6 , Figure 7 as well as Figure 8 This second embodiment is an improvement on the first embodiment. Specifically, the crimping part 9 includes a first crimping plate 25 that is adapted to the arc groove 8; the conductive post 4 is a threaded rod; a threaded insulating tube 26 that is threaded to the conductive post 4 is fixed through the side of the first crimping plate 25; and a first stop groove 27 is provided on the outer wall of the first crimping plate 25.

[0046] Working principle of this embodiment two:

[0047] Rotate the screw-connected insulating tube 26 around the conductive post 4, and the entire pressing part 9 will screw into the U-shaped conductive plate 2. The first pressing plate 25 will press the inclined plate 24, causing the insertion rod 20 to slide down, and the return spring 22 will be compressed.

[0048] The first crimping plate 25 is screwed into the arc-shaped groove 8, which prevents the semi-threaded sleeve 12 from rotating, improves the connection stability between the semi-threaded sleeve 12 and the arc-shaped external threaded tube 11, and at the same time limits the U-shaped insulating sleeve 6 to prevent the U-shaped terminal 3 from falling off due to the pulling of the external wire.

[0049] The first pressing plate 25 continues to rotate, pressing the U-shaped insulating sleeve 6 tightly against the side of the U-shaped conductive plate 2; at this time, the insertion rod 20 and the inclined plate 24 are aligned with the first stop groove 27, the return spring 22 rebounds, and drives the insertion rod 20 and the inclined plate 24 to be inserted into the first stop groove 27.

[0050] The insertion rod 20 limits the rotation of the screw-connected insulating tube 26 in the horizontal direction, preventing it from loosening. This provides double protection for the reliability of the connection between the crimping part 9 and the conductive post 4, making it suitable for long-term stable operation under high-voltage conditions.

[0051] Example 3, please refer to Figures 1-6 , Figures 9-11 This third embodiment is an improvement on the first embodiment. Specifically, the crimping part 9 includes an insulating sleeve 28 that slides with the conductive post 4; a crimping ring 29 is fixed to the periphery of the insulating sleeve 28; an arc-shaped sleeve 30 is fixed to the side of the crimping ring 29; an arc-shaped cavity 31 is symmetrically opened on the outer wall of the arc-shaped sleeve 30; an arc-shaped rod 32 that slides with the arc-shaped groove 8 is slidably arranged inside the arc-shaped cavity 31; an arc-shaped spring 33 is connected between the arc-shaped rod 32 and the arc-shaped cavity 31; and a second stop groove 34 is opened on the outer wall of the arc-shaped sleeve 30.

[0052] The U-shaped insulating sleeve 6 has baffles 35 fixed on both sides; the arc-shaped sleeve 30 has ear plates 36 fixed at both ends that slide with the bottom surface of the baffles 35.

[0053] It also includes insulating blocks 37 symmetrically fixed on the sides of the U-shaped conductive plate 2; insulating branch pipes 38 are fixed on the sides of the insulating blocks 37; and an arc-shaped pipe 39 adapted to the arc-shaped rod 32 is fixed at the end of the insulating branch pipe 38.

[0054] Working principle of this embodiment three:

[0055] The insulating sleeve 28 slides along the conductive post 4 and moves towards the U-shaped conductive plate 2. The arc-shaped sleeve 30 is inserted between the two arc plates 18, and the inclined plate 24 is pressed to make the insertion rod 20 slide down.

[0056] When the insertion rod 20 and the inclined plate 24 are aligned with the second stop groove 34, the reset spring 22 rebounds and is locked into the second stop groove 34, thereby limiting the horizontal direction of the insulating sleeve 28 and preventing it from sliding relative to the conductive post 4; at the same time, the arc-shaped sleeve 30 stops the rotation of the semi-threaded sleeve 12 and strengthens the threaded connection.

[0057] Continue sliding the insulating sleeve 28 to press the U-shaped insulating sleeve 6 tightly against the side of the U-shaped conductive plate 2. At this time, the arc-shaped tube 39 and the arc-shaped rod 32 are concentric.

[0058] The curved spring 33 rebounds, pushing the curved rod 32 through the curved tube 39 and into the curved groove 8. The double-limiting insulating sleeve 28 and the U-shaped insulating sleeve 6 prevent the risk of the U-shaped terminal 3 falling off due to the pulling of the external wire. Installation does not require screwing, making operation more convenient.

[0059] Example 4, please refer to Figures 1-6 , Figure 12 as well as Figure 13 This fourth embodiment is an improvement on the first embodiment. Specifically, the crimping part 9 includes a second crimping plate 40 that is adapted to the arc groove 8; an insulating cap 41 adapted to the conductive post 4 is fixed through the side of the second crimping plate 40; a plurality of insertion holes 42 are evenly opened on the outer wall of the second crimping plate 40; and a third stop groove 43 is opened on the outer wall of the second crimping plate 40.

[0060] It also includes a fixing plate 44 fixedly installed between two U-shaped insulating covers 10; a U-shaped seat 45 is symmetrically fixed on the bottom surface of the fixing plate 44; a lifting plate 46 is slidably arranged between the two U-shaped seats 45; a number of pressing rods 47 are evenly fixed on the bottom surface of the lifting plate 46; a ball head 48 that matches the corresponding insertion hole 42 is fixed at the bottom end of the pressing rod 47; a handle 49 is fixed on the surface of the fixing plate 44; and compression springs 23 are symmetrically fixed between the fixing plate 44 and the lifting plate 46.

[0061] Working principle of Example 4:

[0062] Slide the insulating cap 41 along the conductive post 4 and move it toward the U-shaped conductive plate 2. The second pressing plate 40 is inserted between the two arc plates 18, and the inclined plate 24 is pressed to make the insertion rod 20 slide down.

[0063] When the insertion rod 20 and the inclined plate 24 are aligned with the third stop groove 43, the return spring 22 rebounds and engages, thereby limiting the horizontal position of the second pressing plate 40 and preventing the insulating cap 41 from sliding against the conductive post 4; at the same time, the second pressing plate 40 stops the rotation of the half-threaded sleeve 12, ensuring a firm threaded connection.

[0064] Continue sliding the insulating cap 41 to press the U-shaped insulating sleeve 6 against the side of the U-shaped conductive plate 2; squeeze the spring 23 to rebound, pushing the lifting plate 46 and the pressing rod 47 to move down, and the ball head 48 abuts against the outer wall of the second pressing plate 40.

[0065] Slightly rotate the second pressing plate 40 so that the ball head 48 is engaged in the corresponding insertion hole 42 to achieve elastic locking; the second pressing plate 40 is inserted into the arc groove 8 to limit the U-shaped insulating sleeve 6, which has a stable anti-detachment effect and is suitable for use scenarios with frequent maintenance and disassembly.

Claims

1. A crimp-type terminal block, comprising a conductive part (1) fixedly connected to two sets of stationary contacts on a drop-out high-voltage fuse; the conductive part (1) includes a U-shaped conductive plate (2); a conductive post (4) adapted to the U-shaped terminal (3) at the end of an external conductor is fixed on the side of the U-shaped conductive plate (2); characterized in that: It also includes a connecting part (5) adapted to the U-shaped terminal (3); the connecting part (5) includes a U-shaped insulating sleeve (6); the inner wall of the U-shaped insulating sleeve (6) is provided with a U-shaped groove (7) adapted to the U-shaped terminal (3); the side of the U-shaped insulating sleeve (6) is provided with an arc groove (8) coaxial with the conductive post (4); the bottom of the U-shaped insulating sleeve (6) is screwed with a clamping member for clamping external wires; It also includes a crimping part (9) coaxially arranged with the conductive post (4); the crimping part (9) is adapted to the arc groove (8), and the crimping part (9) applies axial clamping force to the connecting part (5), so that the U-shaped terminal (3) is clamped and fixed between the U-shaped conductive plate (2) and the connecting part (5), ensuring that the U-shaped terminal (3) and the conductive post (4) always maintain a stable limiting conductive fit, resisting the axial tension and radial torque of the external wire; The U-shaped conductive plate (2) has U-shaped insulating caps (10) symmetrically fixed on its side, which are inserted into the two ends of the U-shaped insulating sleeve (6); the bottom of the U-shaped insulating sleeve (6) has two sets of coaxial arc-shaped external threaded tubes (11); the clamping component includes two sets of coaxially arranged semi-threaded sleeves (12); the outer walls of the two semi-threaded sleeves (12) are fixed with connecting plates (13); the two adjacent connecting plates (13) are fixedly connected by fastening screws; the two coaxial semi-threaded sleeves (12) are screwed into the arc-shaped external threaded tubes (11); the ends of the semi-threaded sleeves (12) are fixed with semi-insulating rubber rings (14); the bottom surface of the U-shaped insulating sleeve (6) has a crimping groove (15) that matches the semi-insulating rubber rings (14); the bottom of the semi-threaded sleeves (12) is fixed with a semi-connecting tube (16) that is coaxial with it; the outer wall of the semi-connecting tubes (16) has a screw hole (17); the screw hole (17) is screwed with a screw rod for pressing the external wire; Two arc-shaped plates (18) coaxially arranged with the conductive post (4) are fixed on the outer wall of the semi-threaded sleeve (12); a guide tube (19) is fixed through the outer wall of the arc-shaped plate (18); an insert rod (20) is slidably arranged through the inside of the guide tube (19); a stop block (21) is fixed at the end of the insert rod (20); a return spring (22) sleeved on the insert rod (20) is connected between the stop block (21) and the bottom end of the guide tube (19); an inclined plate (24) that slides with the inner wall of the guide tube (19) is fixed on the outer wall of the insert rod (20).

2. The crimp-type terminal block according to claim 1, characterized in that: The crimping part (9) includes a first crimping plate (25) that is adapted to the arc groove (8); the conductive post (4) is a threaded rod; a threaded insulating tube (26) that is threaded to the conductive post (4) is fixed through the side of the first crimping plate (25); a first stop groove (27) is provided on the outer wall of the first crimping plate (25).

3. A crimp-type terminal block according to claim 2, characterized in that: The crimping part (9) includes an insulating sleeve (28) that slides with the conductive post (4); a crimping ring (29) is fixed on the periphery of the insulating sleeve (28); an arc-shaped sleeve (30) is fixed on the side of the crimping ring (29); an arc-shaped cavity (31) is symmetrically opened on the outer wall of the arc-shaped sleeve (30); an arc-shaped rod (32) that slides with the arc-shaped groove (8) is slidably arranged inside the arc-shaped cavity (31); an arc-shaped spring (33) is connected between the arc-shaped rod (32) and the arc-shaped cavity (31); a second stop groove (34) is opened on the outer wall of the arc-shaped sleeve (30). The U-shaped insulating sleeve (6) has baffles (35) fixed on both sides; the arc-shaped sleeve (30) has ear plates (36) fixed at both ends that slide with the bottom surface of the baffles (35); It also includes insulating blocks (37) symmetrically fixed on the side of the U-shaped conductive plate (2); insulating branch pipes (38) are fixed on the side of the insulating blocks (37); and an arc-shaped pipe (39) adapted to the arc-shaped rod (32) is fixed at the end of the insulating branch pipe (38).

4. A crimp-type terminal block according to claim 3, characterized in that: The crimping part (9) includes a second crimping plate (40) adapted to the arc groove (8); an insulating cap (41) adapted to the conductive post (4) is fixed through the side of the second crimping plate (40); a plurality of insertion holes (42) are evenly opened on the outer wall of the second crimping plate (40); a third stop groove (43) is opened on the outer wall of the second crimping plate (40). It also includes a fixing plate (44) fixedly installed between two U-shaped insulating covers (10); a U-shaped seat (45) is symmetrically fixed on the bottom surface of the fixing plate (44); a lifting plate (46) is slidably arranged between the two U-shaped seats (45); a number of pressing rods (47) are evenly fixed on the bottom surface of the lifting plate (46); a ball head (48) that matches the corresponding insertion hole (42) is fixed at the bottom end of the pressing rod (47); a handle (49) is fixed on the surface of the fixing plate (44); and compression springs (23) are symmetrically fixed between the fixing plate (44) and the lifting plate (46).

5. A drop-out high-voltage fuse, characterized in that, It includes a fuse body, two sets of stationary contacts, and a crimped terminal block as described in any one of claims 1-4; the conductive part (1) of the crimped terminal block is fixedly connected to the stationary contact through a U-shaped conductive plate (2); the external wires are electrically connected to the stationary contact through the crimped terminal block.

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