Outdoor high-voltage disconnector mechanism and device

Abstract

The application discloses an outdoor high-voltage isolating switch mechanism and device, and belongs to the technical field of power equipment, which comprises two moving contact pieces, a first static contact piece, a second static contact piece and an elastic folding assembly, wherein the elastic folding assembly comprises a first spring, a locking structure, two groups of pin shafts, two rotating cylinders and two traction lines, one group of pin shafts comprises three pin shafts which are arranged at intervals along the length direction of the moving contact piece, the moving contact piece is provided with mounting holes through which the pin shafts slide, one end of the pin shaft is fixed with a limiting block, the other end of the pin shaft is slidably provided with a first sliding ring and a second sliding ring, the first sliding ring and the limiting block are respectively in abutment with the opposite faces of the two moving contact pieces, and the two ends of the first spring are respectively in abutment with the opposite end faces of the first sliding ring and the second sliding ring; the locking structure is used for transmitting torque to the rotating cylinders, the rotating directions of the two rotating cylinders are opposite, and the locking structure is also used for relatively fixing the two rotating cylinders. The application can improve the convenience of tightening the moving contact piece.

Description

Technical Field

[0001] This application belongs to the field of power equipment technology and relates to an outdoor high-voltage disconnecting switch mechanism and device. Background Technology

[0002] In power systems, outdoor high-voltage disconnect switches are an indispensable and important piece of equipment in power lines. Their function is to ensure that the power lines can be safely disconnected or closed during maintenance, inspection, or when a fault occurs.

[0003] The GW9 outdoor high-voltage disconnect switch is a common type of disconnect switch. It includes a base, a post insulator, and a switching mechanism. The switching mechanism includes two moving contacts, two stationary contacts, multiple bolts, and springs. One end of the moving contact is hinged to one of the stationary contacts, and the other end of the moving contact can rotate to the other stationary contact. The bolt passes through the two moving contacts, and one end of the bolt is equipped with a washer and a nut. The washer and the bolt head abut against the outer wall of the two moving contacts, respectively. The two ends of the spring abut against the washer and the nut, respectively. The spring force is used to force the washer to move closer to the bolt head, so that the two moving contacts come together and the inner side of the moving contact can fit tightly against the outer side of the two stationary contacts to achieve stable conduction.

[0004] To improve the stability of the two moving contacts closing, multiple bolts and springs are arranged at intervals along the length of the moving contacts to ensure that all parts of the moving contacts are subjected to elastic force along the length of the moving contacts, thereby improving the positional stability of the moving contacts and the clamping and fitting stability of the moving contacts with the stationary contacts. However, when tightening the moving contacts, multiple nuts need to be tightened in sequence to increase the preload of the springs, which is a rather cumbersome operation. Summary of the Invention

[0005] To improve the ease of tightening the moving contact, an outdoor high-voltage disconnector mechanism and device are provided.

[0006] This application provides an outdoor high-voltage disconnector mechanism, which is implemented using the following technical solution:

[0007] An outdoor high-voltage disconnector mechanism includes two moving contacts, a first stationary contact, a second stationary contact, and a spring-loaded closing assembly. The spring-loaded closing assembly includes a first spring, a locking structure, two sets of pins, two rotating drums, and two traction lines. The two sets of pins are located at opposite ends of the moving contacts along their length. The two rotating drums are located at the middle of the moving contacts along their length and are coaxially arranged. Each set of pins includes three pins spaced apart along the length of the moving contacts. The pin furthest from the rotating drum in the set is named the first pin, and the others are named the second pins. The moving contacts have through-holes for the pins to slide through. One end of each pin is fixed with a limit block. The other end of the shaft is fitted with a first slip ring and a second slip ring. The first slip ring and the limiting block abut against the opposite sides of the two moving contact pieces. The two ends of the first spring abut against the opposite end faces of the first slip ring and the second slip ring. The first springs of two adjacent pins are located on both sides of the moving contact piece. The second slip ring is provided with a support rod. One end of the traction line is fixedly connected to the support rod of the second slip ring of the first pin. The other end of the traction line passes around the support rod of the second slip ring of each second pin in sequence and is fixedly wound around the rotating drum. The locking structure is used to transmit torque to the rotating drum. The two rotating drums rotate in opposite directions. The locking structure is also used to fix the two rotating drums relative to each other.

[0008] With the above technical solution, during installation, first ensure that the two moving contacts are in a separated state. At this time, the first spring is not compressed or only slightly compressed to ensure sufficient gap between the two moving contacts. Then, flip the moving contacts so that the two moving contacts are located on opposite sides of the first and second stationary contacts, respectively. Then, apply two torques in opposite directions to the locking structure. The locking structure transmits the torques in different directions to the rotating drum. The rotating drum rotates to tighten the traction line. The taut traction line drives the support rod and the second slip ring to slide axially toward the first slip ring. The first springs on each pin are compressed. The spring force is applied to the moving contact piece through the first slip ring, forcing the two moving contact pieces to move towards each other and tighten, so that the moving contact piece is in close contact with the first and second stationary contact pieces respectively, thus completing the circuit conduction. Finally, the locking structure fixes the two rotating drums relative to each other. Since the two rotating drums have opposite winding directions for the traction line, the reaction force of the first spring on the two sets of pins on the traction line is in opposite directions. That is, the reaction force of the traction line on the two rotating drums is in opposite directions, and the reaction forces of the two rotating drums cancel each other out, thereby ensuring the stability of the traction line state, and thus ensuring the stability of the position state of the two moving contact pieces.

[0009] In summary, by setting up a traction line, support rod, rotating drum, and locking structure, the locking structure transmits torque in different directions to the rotating drum. The rotating drum rotates to tighten the traction line, which simultaneously compresses each of the first springs, causing the two moving contact pieces to move towards each other and tighten stably. This ensures that the moving contact pieces are tightly and stably fitted with the first and second stationary contact pieces, making installation more convenient and providing stronger stability. Secondly, by utilizing the characteristic that the reaction forces of the traction lines on the two rotating drums are in opposite directions, an interlock is formed, thereby ensuring the stability of the position of the two moving contact pieces.

[0010] Optionally, both ends of the movable contact piece have a first protrusion and a second protrusion, wherein the first protrusion is circular and the second protrusion is an elongated strip along the width direction of the movable contact piece, and the surfaces of the first protrusion and the second protrusion are used to fit against the surfaces of the first stationary contact piece and the second stationary contact piece, respectively.

[0011] The above technical solution, by setting a first protrusion and a second protrusion, facilitates high-precision machining and grinding of this part, thereby improving the fitting accuracy and conductivity.

[0012] Optionally, the surfaces of the first stationary contact, the second stationary contact, the first protrusion, and the second protrusion are all cold-sprayed with a copper-nickel composite coating, the thickness of which is 0.5-1.0 mm.

[0013] Through the above technical solutions, the copper-nickel composite coating can reduce contact resistance while increasing wear resistance and oxidation resistance, thereby improving the service life of the disconnecting switch.

[0014] Optionally, the copper-nickel composite coating is made from copper powder and nickel powder, with a particle size of 5-25 μm, and the copper powder and nickel powder are mixed in a molar ratio of 9:1 or 8:2.

[0015] Optionally, the movable contact piece includes a first curved arc segment and a second curved arc segment sequentially from the middle to both sides along its width direction. The concave arc surfaces of the first curved arc segments of the two movable contact pieces are arranged opposite to each other, and the concave arc surfaces of the second curved arc segments of the two movable contact pieces are arranged opposite to each other.

[0016] By defining the specific shape of the moving contact piece, the bending resistance of the moving contact piece is improved, and the space between the two moving contact pieces and the air contact area of ​​the moving contact piece are increased to facilitate air circulation and further improve the heat dissipation effect.

[0017] Optionally, the cross-sectional area of ​​the moving contact piece is 125-175 mm. 2 .

[0018] The above technical solution can improve the mechanical strength of the moving contact by increasing the cross-sectional area.

[0019] Optionally, the pin has a central hole, and a through hole connecting to the central hole is perpendicularly passed through the outer wall of the middle portion of the pin. The through hole is used for the traction line to pass through. A strip groove connecting to the central hole is passed through the outer wall of the end of the pin. The strip groove extends along the length of the pin, and the support rod slides into the strip groove. The locking structure includes a first transmission tube, a second transmission tube, a second spring, a third spring, and a transmission rod. The first and second transmission tubes are both perpendicular to the movable contact piece and coaxially arranged. The two rotating cylinders are respectively rotatably sleeved on the outer walls of the first and second transmission tubes. A sliding hole is opened through the middle portion of the movable contact piece along its own length direction. The rotating cylinders of the first and second transmission tubes slide through the sliding holes of the two movable contact pieces respectively. The disjoint ends of the first and second transmission tubes are fixed with... The nut and two transmission rods slide and engage with the inner walls of the first and second transmission tubes respectively. A key block is fixed to the outer wall of the transmission rod. The first and second transmission tubes are penetrated by a first keyway extending along their own length. The key block slides and engages with the first keyway. The inner wall of the rotating drum is provided with a free-travel area and a second keyway in sequence along its own length. A third spring is used to force the transmission rod to slide away from the other transmission rod and to make the key block enter the second keyway from the free-travel area. A sleeve is fixed to one end of the first transmission tube. A lock ring is fixed to the opening of the sleeve. A rotating plate is fixed to one end of the second transmission tube and rotates and slides with the inner wall of the sleeve. The opposite end faces of the rotating plate and the lock ring are provided with meshing teeth. The elastic force of the second spring is used to force the first and second transmission tubes to move apart and to force the meshing teeth of the rotating plate and the meshing teeth of the lock ring to mesh.

[0020] With the above technical solution, during installation, the two moving contact pieces are in a separated state. Then, the moving contact pieces are flipped so that they are located on opposite sides of the first and second stationary contact pieces, respectively. At this time, the elastic force of the third spring causes the transmission rod to be in a state where the key block on it engages with the second keyway of the rotating drum. That is, the torque of the first and second transmission tubes can be transmitted to the corresponding rotating drums respectively. Then, two socket wrenches are used to apply axial pressure to the first and second transmission tubes respectively, causing the first and second transmission tubes to move axially towards each other. The second spring is compressed so that the meshing teeth of the rotating piece disengage from the meshing teeth of the anti-disengagement ring, thus making the first and second transmission tubes independent. Then, the two socket wrenches perform rotational operations on the first and second transmission tubes in different directions, and the torque of the first and second transmission tubes is transmitted to the corresponding rotating drums through the key block of the transmission rod. The rotation of the two rotating drums... The two rotating drums move in opposite directions and respectively wind up the corresponding traction lines. The traction lines are taut, causing the support rod and the second slip ring to slide axially toward the first slip ring. The first springs on each pin are compressed, and the elastic force of the first springs is applied to the moving contact pieces through the first slip rings, forcing the two moving contact pieces to move toward each other and tighten. This makes the moving contact pieces fit tightly with the first and second stationary contact pieces respectively, thus completing the circuit conduction. Finally, the two sleeve wrenches are moved in opposite axial directions, the second springs recover their deformation, and the first and second transmission tubes move apart, so that the meshing teeth of the rotating piece and the meshing teeth of the anti-disengagement ring mesh together. That is, the first and second transmission tubes are fixed together, thus fixing the two rotating drums relative to each other. The reaction forces of the traction lines on the two rotating drums are in opposite directions, and the reaction forces of the two rotating drums cancel each other out, thus ensuring the stability of the traction line state, and thus ensuring the stability of the position state of the two moving contact pieces.

[0021] When it is necessary to release the tension of the moving contact and facilitate opening the circuit breaker, press the ends of the two transmission rods respectively, causing them to move towards each other. The third spring is compressed, and the key block slides from the second keyway of the rotating drum into the idle area of ​​the rotating drum. At this time, the first and second transmission tubes have no limit to their position on the rotating drum. Therefore, the reaction force of the first spring on the traction line will be transmitted to the rotating drum through the traction line to realize the rotation of the rotating drum and the automatic unwinding of the traction line. The first spring returns to its original deformation, and the tension force on the moving contact is reduced, allowing the moving contact to separate and create a gap, thereby realizing the rapid release of the tension of the moving contact, which is more convenient. Furthermore, after the traction line is unwound to the appropriate state, the transmission rod can also be released. The third spring returns to its original deformation and forces the transmission rod to slide away from the other transmission rod, causing the key block to enter the second keyway from the idle area. That is, the first and second transmission tubes are used to brake the rotating drum to reduce the occurrence of excessive unwinding of the traction line.

[0022] In summary, by setting up a first transmission tube, a second transmission tube, a second spring, a third spring, a transmission rod, and meshing teeth, the fixing or unfixing between the first and second transmission tubes can be achieved, as well as the fixing or unfixing between the two rotating drums and the first and second transmission tubes respectively. This enables unified winding and rapid unwinding of the traction line, which not only improves the convenience and stability of the moving contact plate in the tightened state, but also enables the rapid untightening of the moving contact plate.

[0023] Optionally, the through hole is a tapered hole, with the larger end of the tapered hole located away from the central hole. The first pin has three clamping pieces inside the through hole, with the outer surface of the clamping pieces fitting against the inner wall of the through hole. The clamping pieces are arranged circumferentially at intervals. The larger end of the through hole is also provided with an anti-detachment ring to prevent the clamping pieces from detaching from the through hole. The sides of the clamping pieces are provided with interlocking teeth, which are used to jointly hold the traction line. The second pin has a second slip ring that slides radially along itself with an insertion block. The outer wall of the second pin has multiple insertion holes that are equidistantly arranged along its length, and the insertion holes are used for inserting the insertion block.

[0024] After the moving contact piece is tightened and installed using the above technical solution, considering the possibility of insufficient tightening force at the end position of the long moving contact piece, the first spring on the first pin of the moving contact piece can be further compressed to achieve high tightening force at the end position and relatively high tightening force at the non-end position of the long moving contact piece. This further improves the fit stability of the moving and stationary contact pieces and reduces the bending deformation of the long moving contact piece. Specifically, the sliding block is inserted into the insertion hole to fix the second slip ring to the second pin, preventing the support rod on the second slip ring from moving. Then, the locking structure applies torque again to the two rotating drums to further wind up the traction line. Due to the support on the second pin... The rod cannot move, and the winding traction line only causes the support rod on the first pin to slide, that is, only causes the first spring on the first pin to be further compressed. The first spring on the second pin is not compressed. After the first spring is fully compressed, the locking structure is used to fix the two rotating drums. Then the sliding block disengages from the insertion hole, so that the second slip ring and the second pin can move relative to each other. The overcompressed first spring on the first pin will release a small amount of elasticity to drive the traction line to move a small distance. At this time, the moving traction line will cause the clamps to wed more tightly into the conical hole. The three clamps approach each other and bite tightly into the traction line to prevent the traction line from moving further, thereby maintaining the compressed state of the first spring on the first pin.

[0025] When it is necessary to release the tension of the moving contact piece, a rod-like object can be inserted into the corresponding through hole of the through hole where the clamp piece is located. The rod-like object pushes the clamp piece outward to release the wedge state between the clamp piece and the through hole, so that the traction line is in a free state. Then, the deformation of each first spring is restored by the automatic unwinding of the rotating drum.

[0026] In summary, by setting up clamps and inserts, the clamps are used to allow only unidirectional movement of the traction line, and the inserts are used to fix the second slip ring to the second pin, preventing the support rod on the second slip ring from moving. Therefore, the first spring on the first pin of the moving contact can be further compressed to achieve a high clamping force at the end position of the long moving contact and a relatively high clamping force at the non-end position of the long moving contact, thereby further improving the contact stability of the moving and stationary contacts and reducing the bending deformation of the long moving contact.

[0027] Optionally, the surface of the movable contact piece facing away from another movable contact piece is integrally formed with multiple ribs, each rib extending along the length direction of the movable contact piece and arranged at intervals along the width direction of the movable contact piece.

[0028] By using the above technical solution, fins are added to increase the contact area between the moving contact and the external air, thereby greatly improving the heat dissipation effect.

[0029] This application provides an outdoor high-voltage disconnector device, which is implemented using the following technical solution:

[0030] An outdoor high-voltage disconnector device includes a base, an insulating support, and an outdoor high-voltage disconnector mechanism.

[0031] The beneficial effects of this application are:

[0032] 1. By setting up a traction line, support rod, rotating drum, and locking structure, the locking structure transmits torque in different directions to the rotating drum. The rotating drum rotates to tighten the traction line, which in turn compresses each of the first springs, causing the two moving contact pieces to move towards each other and tighten stably. This makes the moving contact pieces fit tightly and stably with the first and second stationary contact pieces, which is more convenient and has stronger installation stability. Secondly, by utilizing the characteristic that the two rotating drums are subjected to opposite directions of the reaction force of the traction line, an interlock is formed, thereby ensuring the stability of the position of the two moving contact pieces.

[0033] 2. By setting up a first transmission tube, a second transmission tube, a second spring, a third spring, a transmission rod, and meshing teeth, the fixing or unfixing between the first transmission tube and the second transmission tube can be achieved, as well as the fixing or unfixing between the two rotating drums and the first transmission tube and the second transmission tube respectively. This enables unified winding and rapid unwinding of the traction line, which not only improves the convenience and stability of the tightened state of the moving contact piece, but also enables the rapid untightening state of the moving contact piece.

[0034] 3. By setting clamps and inserts, the clamps are used to allow only unidirectional movement of the traction line, and the inserts are used to fix the second slip ring to the second pin, so that the support rod on the second slip ring cannot move. Therefore, the first spring on the first pin of the moving contact can be further compressed to achieve a high tightening force at the end position of the long moving contact and a relatively high tightening force at the non-end position of the long moving contact, thereby further improving the contact stability of the moving and stationary contacts and reducing the bending deformation of the long moving contact. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the outdoor high-voltage disconnector mechanism of Embodiment 1.

[0036] Figure 2 This is a schematic diagram of the moving contact piece in Example 1.

[0037] Figure 3 This is a schematic diagram of the first and second stationary contact pieces in Embodiment 1.

[0038] Figure 4 This is a cross-sectional view of the outdoor high-voltage disconnector mechanism of Embodiment 1.

[0039] Figure 5 yes Figure 1 A magnified view of a portion of point A in the middle.

[0040] Figure 6 yes Figure 4 A magnified view of a section at point B.

[0041] Figure 7 yes Figure 4 A magnified view of a section at point C.

[0042] Figure 8 yes Figure 4 A magnified view of a section at point D.

[0043] Figure 9 This is a schematic diagram of the second transmission tube in Embodiment 1.

[0044] Figure 10 This is a cross-sectional view of the first pin in Embodiment 2.

[0045] Figure 11 This is a schematic diagram of the clip in Example 2.

[0046] Figure 12 This is a partial schematic diagram of Embodiment 2, illustrating the mating relationship between the insert block and the second slip ring.

[0047] Explanation of reference numerals in the attached drawings: 1. Moving contact piece; 2. Pin; 3. Locking structure; 5. Rotary drum; 6. Traction line; 10. First pin; 11. First curved segment; 12. Second curved segment; 13. Rib; 14. First protrusion; 15. Second protrusion; 16. Mounting hole; 17. Sliding hole; 20. Second pin; 201. First stationary contact piece; 202. Second stationary contact piece; 203. Clearance groove; 21. First slip ring; 22. Second slip ring; 221. Support rod; 23. First spring. ; 24. Limiting block; 25. Strip groove; 26. Center hole; 27. Through hole; 271. Clamping piece; 272. Engaging tooth; 273. Anti-disengagement ring; 28. Insert block; 31. First transmission tube; 311. Nut; 312. First keyway; 32. Second transmission tube; 33. Second spring; 34. Transmission rod; 341. Key block; 35. Third spring; 36. Sleeve; 37. Anti-disengagement ring; 371. Engaging tooth; 38. Rotating piece; 51. Second keyway; 52. Idle area. Detailed Implementation

[0048] The embodiments of this application are described in detail below, and examples of the embodiments are provided in the appendix. Figures 1-12 As shown in the image.

[0049] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Example 1

[0051] Example 1 discloses an outdoor high-voltage disconnector mechanism, such as Figure 1 , Figure 2 , Figure 3As shown, the outdoor high-voltage disconnector mechanism includes two moving contacts 1, a first stationary contact 201, a second stationary contact 202, and a spring-loaded closing assembly. The moving contacts 1 are elongated strips, with one end designated as a hinged end and the other end as an opening / closing end. The hinged end of the moving contacts 1 is hinged to the first stationary contact 201, allowing the moving contacts 1 to be flipped. The opening / closing end of the moving contacts 1 is used to contact the second stationary contact 202 to complete the conduction. After the opening / closing end of the moving contacts 1 contacts the second stationary contact 202, the spring-loaded closing assembly is activated. The spring-loaded closing assembly forces the two moving contacts 1 closer together, tightening the moving contacts 1 to further clamp and adhere the first stationary contact 201 and the second stationary contact 202, thereby improving the stability of the conduction.

[0052] like Figure 2 As shown, the movable contact 1 includes a first curved segment 11 and a second curved segment 12 sequentially from the middle to both sides along its width direction. The concave arc surfaces of the first curved segments 11 of the two movable contact 1s are arranged opposite each other, and the concave arc surfaces of the second curved segments 12 of the two movable contact 1s are arranged opposite each other. The cross-sectional area of ​​the movable contact 1 is 125-175 mm². 2 In this way, not only is the bending resistance of the moving contact 1 improved, but the space between the two moving contact 1s and the air contact area of ​​the moving contact 1s are also increased, so as to facilitate air circulation and further improve the heat dissipation effect.

[0053] Furthermore, multiple ribs 13 are integrally formed on the surface of the movable contact 1 facing away from the other movable contact 1. The ribs 13 extend along the length direction of the movable contact 1, and each rib 13 is arranged at intervals along the width direction of the movable contact 1. By setting the ribs 13, the contact area between the movable contact 1 and the external air is increased, thereby greatly improving the heat dissipation effect.

[0054] In this embodiment, the movable contact 1 is machined from an aluminum alloy profile, preferably 6101, 6061 or 6063 aluminum alloy, and the first curved arc segment 11, the second curved arc segment 12 and the rib 13 of the movable contact 1 can be integrally formed by cold extrusion, thereby improving the mechanical strength of the movable contact 1.

[0055] like Figure 2 , Figure 3 As shown, both ends of the movable contact 1 have a first protrusion 14 and a second protrusion 15. The first protrusion 14 is circular, and the second protrusion 15 is an elongated strip along the width direction of the movable contact 1. The surfaces of the first protrusion 14 and the second protrusion 15 are used to fit with the surfaces of the first stationary contact 201 and the second stationary contact 202, respectively. Furthermore, the surfaces of the first stationary contact 201, the second stationary contact 202, the first protrusion 14, and the second protrusion 15 are all cold-sprayed with a copper-nickel composite coating with a thickness of 0.5-1.0 mm.

[0056] Specifically, the copper-nickel composite coating is made of copper powder and nickel powder, with a particle size of 5-25μm. The copper powder and nickel powder are mixed in a molar ratio of 9:1 or 8:2.

[0057] Copper-nickel composite coatings can reduce contact resistance while increasing wear resistance and oxidation resistance, thereby improving the service life of disconnect switches.

[0058] like Figure 4-8 As shown, the elastic closing assembly includes a first spring 23, a locking structure 3, two sets of pins 2, two rotating cylinders 5, and two traction lines 6. The two sets of pins 2 are located at both ends of the moving contact piece 1 along its length, and the two rotating cylinders 5 are located in the middle of the moving contact piece 1 along its length and are coaxially arranged. Both the pins 2 and the rotating cylinders 5 are horizontal and perpendicular to the moving contact piece 1. Each set of pins 2 includes three pins 2 arranged at intervals along the length of the moving contact piece 1. The pin 2 furthest from the rotating cylinder 5 in a set of pins 2 is named the first pin 10, and the other pins 2 are named the second pins 20, that is, there are two first pins 10 and four second pins 20.

[0059] The movable contact 1 has a through mounting hole 16 through which the pin 2 slides. The first pin 10 located at the hinge end of the movable contact 1 also passes through the first stationary contact 201, so that the hinge end of the movable contact 1 is hinged to the first stationary contact 201.

[0060] The pin 2 has a central hole 26 extending along the axial direction of the pin 2. The outer wall of the middle part of the pin 2 has two through holes 27 that connect to the central hole 26. The through holes 27 extend radially along the pin 2. The two through holes 27 are symmetrically arranged. The through holes 27 are tapered holes, and the larger end of the tapered hole is located away from the axis of the pin 2.

[0061] One end of the pin 2 has a groove 25 that extends through the outer wall and connects to the central hole 26. The groove 25 extends along the length of the pin 2, and there are two grooves 25 arranged symmetrically.

[0062] One end of the pin 2 is fixed with a limiting block 24, and the other end of the pin 2 is slidably fitted with a first slip ring 21 and a second slip ring 22. The first slip ring 21 and the limiting block 24 respectively abut against the opposite sides of the two moving contact pieces 1 (the opposite sides refer to the surfaces of the two moving contact pieces 1 that are opposite to each other), and the limiting blocks 24 of the two adjacent pins 2 are located on both sides of the two moving contact pieces 1, that is, the limiting blocks 24 of the two adjacent pins 2 are staggered along the length direction of the moving contact piece 1.

[0063] The first spring 23 is sleeved on one end of the pin 2. The two ends of the first spring 23 abut against the opposite end faces of the first slip ring 21 and the second slip ring 22, respectively. The first springs 23 of two adjacent pins 2 are staggered along the length direction of the moving contact piece 1.

[0064] The second slip ring 22 is fixed with a support rod 221. The length direction of the support rod 221 is the radial direction of the pin 2. The support rod 221 is a round rod and slides with the strip groove 25.

[0065] The traction wire 6 can be a high-horsepower diamond wire or a carbon fiber wire. One end of the traction wire 6 is tied and fixedly connected to the support rod 221 of the second slip ring 22 of the first pin 10. The other end of the traction wire 6 passes through the center hole 26 and through hole 27 of the first pin 10, the through hole 27 and center hole 26 of each second pin 20, and around the support rod 221 of the second slip ring 22. Finally, it is fixedly wound on one of the rotating drums 5. That is, the two rotating drums 5 respectively wind and fix one traction wire 6, and the winding directions of the two rotating drums 5 are opposite.

[0066] It should be noted that the first stationary contact piece 201 is provided with a relief groove 203, which is connected to the hole through which the first pin 10 passes in the first stationary contact piece 201. The traction wire 6 passes through the relief groove 203 so as to ensure that the first stationary contact piece 201 will not interfere with the traction wire 6 when the moving contact piece 1 deflects relative to the first stationary contact piece 201.

[0067] The locking structure 3 is used to transmit torque to the rotating drum 5 and to make the two rotating drums 5 rotate in opposite directions. The locking structure 3 also serves to fix the two rotating drums 5 relative to each other. Specifically, as follows... Figure 8 , Figure 9 As shown, the locking structure 3 includes a first transmission tube 31, a second transmission tube 32, a second spring 33, a third spring 35, and a transmission rod 34. The first transmission tube 31 and the second transmission tube 32 are both perpendicular to the movable contact piece 1 and are coaxially arranged. Two rotating cylinders 5 are respectively rotatably sleeved on the outer walls of the first transmission tube 31 and the second transmission tube 32. The movable contact piece 1 has a sliding hole 17 through its middle part along its own length direction. The rotating cylinder 5 of the first transmission tube 31 and the rotating cylinder 5 of the second transmission tube 32 slide through the sliding hole 17 of the two movable contact pieces 1, and the rotating cylinder 5 can rotate relative to the sliding hole 17.

[0068] Nuts 311 are fixed to the disjointed ends of the first transmission tube 31 and the second transmission tube 32 (the disjointed ends refer to the ends of the first transmission tube 31 and the second transmission tube 32 that are furthest apart). The nuts 311 are located on the outside of the moving contact piece 1. The two transmission rods 34 are axially slidingly engaged with the inner walls of the first transmission tube 31 and the second transmission tube 32, respectively. In this embodiment, the outer wall of the transmission rod 34 can be covered with a rubber coating to improve the damping of the sliding engagement. A key block 341 is fixed to the outer wall of the transmission rod 34. The first transmission tube 31 and the second transmission tube 32 pass through a first keyway 312 extending along their own length direction. The key block 341 and the first keyway 312 are always in sliding engagement, so that the torque of the first transmission tube 31 and the second transmission tube 32 can be transmitted to the corresponding transmission rods 34, respectively.

[0069] The inner wall of the rotating cylinder 5 is provided with a free travel area 52 and a second keyway 51 along its length. The free travel area 52 can be understood as a stepped groove opened in the inner wall of the rotating cylinder 5, and its inner diameter is larger than the inner diameter of the inner wall of the rotating cylinder 5. Two third springs 35 are respectively located in the first transmission tube 31 and the second transmission tube 32. The end of the third spring 35 abuts against the transmission rod 34. The elastic force of the third spring 35 is used to force the transmission rod 34 to slide away from the other transmission rod 34 and cause the key block 341 to enter the second keyway 51 from the free travel area 52. In the normal state, the key block 341 cooperates with the first keyway 312 and the second keyway 51, so that the torque of the first transmission tube 31 and the second transmission tube 32 can be transmitted to the corresponding rotating drum 5. When the two transmission rods 34 slide towards each other under the action of external force (the third spring 35 is compressed), the key block 341 of the force transmission rod will enter the idle area 52 from the second keyway 51. The rotating drum 5 has no torque transmission relationship with the first transmission tube 31 and the second transmission tube 32, that is, the rotating drum 5 is in a free and rotatable state.

[0070] In other embodiments, the second keyway 51 may be multiple and arranged at intervals along the circumference of the rotating cylinder 5.

[0071] A sleeve 36 is fixed to one end of the first transmission tube 31, and a locking ring 37 is fixed to the opening of the sleeve 36, which can be fixed by welding. A rotating plate 38 located inside the sleeve 36 is fixed to one end of the second transmission tube 32. The rotating plate 38 slides axially with the inner wall of the sleeve 36 and rotates with the inner wall of the sleeve 36. Multiple meshing teeth 371 are fixed on the opposite end faces of the rotating plate 38 and the locking ring 37, and the meshing teeth 371 are arranged circumferentially at intervals. A second spring 33 is located inside the sleeve 36. The two ends of the second spring 33 abut against the inner end face of the sleeve 36 and the end face of the rotating plate 38, respectively. The elastic force of the second spring 33 is used to force the first transmission tube 31 and the second transmission tube 32 to move apart and force the meshing teeth 371 of the rotating plate 38 and the meshing teeth 371 of the locking ring 37 to mesh.

[0072] During installation, the two moving contact pieces 1 are in a separated state. At this time, the first spring 23 is not compressed or is only slightly compressed to ensure sufficient gap between the two moving contact pieces 1. Then, the moving contact pieces 1 are flipped so that the two moving contact pieces 1 are respectively located on both sides of the first stationary contact piece 201 and the second stationary contact piece 202. At this time, the elastic force of the third spring 35 causes the transmission rod 34 to be in a state where the key block 341 on it engages with the second keyway 51 of the rotating drum 5. That is, the torque of the first transmission tube 31 and the second transmission tube 32 can be transmitted to the corresponding rotating drum 5 respectively. Then, two socket wrenches are used to apply axial pressure to the first transmission tube 31 and the second transmission tube 32 respectively, so that the first transmission tube 31 and the second transmission tube 32 move axially towards each other. The second spring 33 is compressed so that the meshing teeth 371 of the rotating piece 38 disengage from the meshing teeth 371 of the anti-disengagement ring 37, that is, the first transmission tube 31 and the second transmission tube 32 are engaged. The tubes 32 are independent (at this time, the key block 341 of the transmission rod 34 is still engaged with the second keyway 51 of the rotating drum 5). Then, the two socket wrenches perform rotation operations in different directions on the first transmission tube 31 and the second transmission tube 32 respectively. The torque of the first transmission tube 31 and the second transmission tube 32 is transmitted to the corresponding rotating drum 5 through the key block 341 of the transmission rod 34 respectively. The two rotating drums 5 rotate in opposite directions and the two rotating drums 5 respectively wind up the corresponding traction lines 6. The traction lines 6 are taut to drive the support rod 221 and the second slip ring 22 to slide axially in the direction toward the first slip ring 21, so that the first springs 23 on each pin 2 are compressed. The elastic force of the first spring 23 is applied to the moving contact piece 1 through the first slip ring 21 to force the two moving contact pieces 1 to move toward each other and tighten, so that the moving contact piece 1 is tightly attached to the first stationary contact piece 201 and the second stationary contact piece 202 respectively to complete the circuit conduction.

[0073] Finally, the two socket wrenches are moved in opposite directions along the axial direction, the second spring 33 recovers its deformation, and the first transmission tube 31 and the second transmission tube 32 move apart, so that the meshing teeth 371 of the rotating plate 38 and the meshing teeth 371 of the anti-disengagement ring 37 mesh together, that is, the first transmission tube 31 and the second transmission tube 32 are fixed together, so that the two rotating drums 5 are relatively fixed, and the reaction pull of the traction line 6 on the two rotating drums 5 is opposite in direction. The reaction pull of the two rotating drums 5 cancels each other out, thereby ensuring the stability of the state of the traction line 6, and thus ensuring the stability of the position state of the two moving contact pieces 1.

[0074] When it is necessary to release the tension of the moving contact 1 and facilitate the opening of the circuit breaker, press the ends of the two transmission rods 34 respectively, so that the two transmission rods 34 move towards each other, the third spring 35 is compressed, and the key block 341 slides from the second keyway 51 of the rotating drum 5 into the idle area 52 of the rotating drum 5. At this time, the first transmission tube 31 and the second transmission tube 32 have no limit to the rotation of the rotating drum 5, and the rotating drum 5 is in a free and rotatable state. Therefore, the reaction force of the first spring 23 on the traction line 6 will be transmitted to the rotating drum 5 through the traction line 6 to realize the rotation of the rotating drum 5 and the automatic unwinding of the traction line 6. The first spring 23 returns to its deformation, the tension force on the moving contact 1 is weakened, so as to allow the moving contact 1 to separate and generate a gap, thereby realizing the quick release of the tension of the moving contact 1, which is more convenient.

[0075] In summary, by setting up the first transmission tube 31, the second transmission tube 32, the second spring 33, the third spring 35, the transmission rod 34, and the meshing teeth, the fixing or unfixing between the first transmission tube 31 and the second transmission tube 32 can be achieved, as well as the fixing or unfixing between the two rotating drums 5 and the first transmission tube 31 and the second transmission tube 32 respectively. This enables the unified winding and rapid unwinding of the traction line 6, which not only improves the convenience and stability of the tightened state of the moving contact piece 1, but also enables the rapid untightening state of the moving contact piece 1.

[0076] Example 1 also discloses an outdoor high-voltage disconnecting switch device, which includes a base, an insulating support, and an outdoor high-voltage disconnecting switch mechanism.

[0077] Example 2

[0078] The difference between Example 2 and Example 1 is that, as Figure 10 , Figure 11 As shown, three clips 271 are provided in the through hole 27 of the first pin 10. The outer surface of the clips 271 is attached to the inner wall of the through hole 27. Each clip 271 is arranged circumferentially at intervals. The three clips 271 are combined to form a conical structure. The side of the clips 271 is provided with interlocking teeth 272. The interlocking teeth 272 of each clip 271 are used to jointly hold the traction line 6.

[0079] The large end of the through hole 27 is also welded with an anti-detachment ring 273 to prevent the clip 271 from detaching from the through hole 27. The inner diameter of the anti-detachment ring 273 is smaller than the outer diameter of the virtual circle enclosed by each clip 271. The anti-detachment ring 273 is used to prevent the clip 271 from detaching.

[0080] like Figure 12 As shown, the second slip ring 22 of the second pin 20 is provided with a plug 28 that slides radially along itself. The outer wall of the second pin 20 is provided with a plurality of insertion holes (not shown in the figure) that are equidistantly arranged along its own length direction. The insertion holes are used for the insertion block 28 to be inserted.

[0081] After the movable contact 1 is tightened and installed, considering that the tightening force at the end position of the movable contact 1 may be insufficient when the movable contact 1 is long, the first spring 23 on the first pin 10 of the movable contact 1 can be further compressed to achieve a high tightening force at the end position of the long movable contact 1 and a relatively high tightening force at the non-end position of the long movable contact 1, thereby further improving the contact stability of the movable and stationary contacts and reducing the occurrence of bending deformation of the long movable contact 1.

[0082] The specific operation is as follows: After the movable contact piece 1 is tightly installed, the sliding insert 28 is inserted into the insertion hole to fix the second slip ring 22 to the second pin 20, so that the support rod 221 on the second slip ring 22 cannot move. Then, the torque is applied to the two rotating drums 5 again through the locking structure 3 to further wind up the traction line 6. Since the support rod 221 on the second pin 20 cannot move, the wound traction line 6 only drives the support rod 221 on the first pin 10 to slide, that is, only drives the first spring 23 on the first pin 10 to be further compressed. The first spring 23 on the second pin 20 is not compressed. That is, the compression degree of the first spring 23 on the first pin 10 is greater than that of the second pin 20. The compression degree of the first spring 23 on the shaft 20 is such that after the first spring 23 on the first pin 10 is fully compressed, the locking structure 3 is used to fix the two rotating cylinders 5, and then the sliding block 28 is disengaged from the insertion hole, so that the second slip ring 22 and the second pin 20 can move relative to each other. The over-compressed first spring 23 on the first pin 10 will release a small portion of its elastic force to drive the traction line 6 to move a small distance. At this time, the moving traction line 6 will drive the clamp 271 to wedge more tightly into the conical hole. The three clamps 271 approach each other and bite tightly into the traction line 6 to prevent the traction line 6 from moving further, thereby maintaining the compression state of the first spring 23 on the first pin 10.

[0083] When it is necessary to release the tension of the movable contact piece 1, a rod-shaped object can be inserted into the corresponding through hole 27 of the through hole 27 where the clamp piece 271 is located. The rod-shaped object pushes the clamp piece 271 outward to release the wedged state between the clamp piece 271 and the through hole 27. The adjacent clamp pieces 271 separate to release the clamp on the traction line 6, so that the traction line 6 is in a free state. Subsequently, the deformation of each first spring 23 is restored by the automatic unwinding of the rotating drum 5.

[0084] In summary, by setting the clamp 271 and the insert 28, the clamp 271 is used to allow only unidirectional movement of the traction line 6, and the insert 28 is used to fix the second slip ring 22 to the second pin 20, so that the support rod 221 on the second slip ring 22 cannot move. Therefore, the first spring 23 on the first pin 10 of the moving contact piece 1 can be further compressed, while the first spring 23 on the other second pins 20 is not compressed, so as to achieve a high tightening force at the end position of the long moving contact piece 1 and a relatively high tightening force at the non-end position of the long moving contact piece 1, thereby further improving the contact stability of the moving and stationary contacts and reducing the bending deformation of the long moving contact piece 1.

[0085] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An outdoor high-voltage disconnector mechanism, characterized in that, It includes two movable contact pieces (1), a first stationary contact piece (201), a second stationary contact piece (202), and a spring-loaded closing assembly. The spring-loaded closing assembly includes a first spring (23), a locking structure (3), two sets of pins (2), two rotating cylinders (5), and two traction lines (6). The two sets of pins (2) are located at both ends of the movable contact piece (1) along its length, and the two rotating cylinders (5) are located at the middle of the movable contact piece (1) along its length and are coaxially arranged. Each set of pins (2) includes three pins (2) spaced apart along the length of the movable contact piece (1). The set of pins (2) is used to separate the rotating cylinders from the moving contact piece (1). The furthest pin (2) of the cylinder (5) is named the first pin (10), and the other pins (2) are named the second pins (20). The movable contact piece (1) has a through mounting hole (16) for the pins (2) to slide through. One end of the pin (2) is fixed with a limit block (24), and the other end of the pin (2) is fitted with a first slip ring (21) and a second slip ring (22). The first slip ring (21) and the limit block (24) abut against the opposite sides of the two movable contact pieces (1), and the two ends of the first spring (23) abut against the first slip ring (21) and the second slip ring (22), respectively. On the opposite end faces of the two slip rings (22), the first springs (23) of the two adjacent pins (2) are located on both sides of the moving contact piece (1), and the second slip ring (22) is provided with a support rod (221); one end of the traction line (6) is fixedly connected to the support rod (221) of the second slip ring (22) of the first pin (10), and the other end of the traction line (6) passes around the support rod (221) of the second slip ring (22) of each second pin (20) in sequence and is fixedly wound around the rotating drum (5). The locking structure (3) is used to transmit torque to the rotating drum (5), and the two rotating drums... The cylinders (5) rotate in opposite directions, and the locking structure (3) is also used to fix the two rotating cylinders (5) relative to each other; the pin (2) has a central hole (26) through it, and the outer wall of the middle part of the pin (2) has a through hole (27) that connects to the central hole (26) through it vertically. The through hole (27) is used for the traction line (6) to pass through. The outer wall of the end of the pin (2) has a strip groove (25) that connects to the central hole (26) through it. The strip groove (25) extends along the length of the pin (2), and the support rod (221) slides into the strip groove (25).The locking structure (3) includes a first transmission tube (31), a second transmission tube (32), a second spring (33), a third spring (35), and a transmission rod (34). The first transmission tube (31) and the second transmission tube (32) are both perpendicular to the movable contact piece (1) and coaxially arranged. The two rotating cylinders (5) are respectively rotatably sleeved on the outer walls of the first transmission tube (31) and the second transmission tube (32). The movable contact piece (1) has a sliding hole (17) through its middle part along its length direction. The rotating drum (5) of tube (31) and the rotating drum (5) of the second transmission tube (32) slide through the sliding holes (17) of the two moving contact plates (1), respectively. Nuts (311) are fixed at the opposite ends of the first transmission tube (31) and the second transmission tube (32). The two transmission rods (34) slide and engage with the inner walls of the first transmission tube (31) and the second transmission tube (32), respectively. A key block (341) is fixed on the outer wall of the transmission rod (34). The first transmission tube (31) and the second transmission tube (32) pass through a passage along the […]. A first keyway (312) extending along the length of the body, a key block (341) slidingly engaging with the first keyway (312), the inner wall of the rotating cylinder (5) sequentially having a free-travel area (52) and a second keyway (51) along its own length, a third spring (35) forcing the transmission rod (34) to slide away from the other transmission rod (34) and causing the key block (341) to enter the second keyway (51) from the free-travel area (52); a sleeve (36) is fixed to one end of the first transmission tube (31), the sleeve ( The sleeve (36) has a locking ring (37) fixed at its opening. One end of the second transmission tube (32) is fixed with a rotating plate (38) that rotates and slides with the inner wall of the sleeve (36). The opposing end faces of the rotating plate (38) and the locking ring (37) are provided with meshing teeth (371). The elastic force of the second spring (33) forces the first transmission tube (31) and the second transmission tube (32) to move apart and forces the meshing teeth (371) of the rotating plate (38) and the locking ring (37) to mesh.

2. The outdoor high-voltage disconnector mechanism according to claim 1, characterized in that, The movable contact (1) has a first protrusion (14) and a second protrusion (15) protruding from both ends. The first protrusion (14) is circular, and the second protrusion (15) is an elongated strip along the width direction of the movable contact (1). The surfaces of the first protrusion (14) and the second protrusion (15) are used to fit against the surfaces of the first stationary contact (201) and the second stationary contact (202), respectively.

3. The outdoor high-voltage disconnector mechanism according to claim 2, characterized in that, The surfaces of the first stationary contact (201), the second stationary contact (202), the first protrusion (14), and the second protrusion (15) are all cold-sprayed with a copper-nickel composite coating, the thickness of which is 0.5-1.0 mm.

4. The outdoor high-voltage disconnector mechanism according to claim 3, characterized in that, The copper-nickel composite coating is made of copper powder and nickel powder, with a particle size of 5-25 μm. The copper powder and nickel powder are mixed in a molar ratio of 9:1 or 8:

2.

5. The outdoor high-voltage disconnector mechanism according to claim 1, characterized in that, The movable contact (1) includes a first curved arc segment (11) and a second curved arc segment (12) from the middle to both sides along its width direction. The concave arc surfaces of the first curved arc segments (11) of the two movable contact (1) are arranged opposite to each other, and the concave arc surfaces of the second curved arc segments (12) of the two movable contact (1) are arranged opposite to each other.

6. The outdoor high-voltage disconnector mechanism according to claim 5, characterized in that, The cross-sectional area of ​​the moving contact (1) is 125-175 mm².

7. The outdoor high-voltage disconnector mechanism according to claim 1, characterized in that, The through hole (27) is a tapered hole, with the large end of the tapered hole located away from the central hole (26). The through hole (27) of the first pin (10) is provided with three clips (271). The outer surface of the clips (271) is attached to the inner wall of the through hole (27). Each clip (271) is arranged circumferentially. The large end of the through hole (27) is also provided with an anti-detachment ring (273) to prevent the clips (271) from detaching from the through hole (27). The side of the clips (271) is provided with a biting protrusion (272). The biting protrusion (272) of each clip (271) is used to bite the traction line (6) together. The second slip ring (22) of the second pin (20) is provided with a plug (28) that slides along its own radial direction. The outer wall of the second pin (20) is provided with a plurality of insertion holes that are equidistantly arranged along its own length direction. The insertion holes are used for the insertion block (28) to be inserted.

8. The outdoor high-voltage disconnector mechanism according to claim 1, characterized in that, The surface of the movable contact piece (1) facing away from another movable contact piece (1) is integrally formed with multiple ribs (13), each rib (13) extending along the length direction of the movable contact piece (1) and each rib (13) being arranged at intervals along the width direction of the movable contact piece (1).

9. An outdoor high-voltage disconnector device, characterized in that, It includes a base, an insulating support, and the outdoor high-voltage disconnect switch mechanism as described in claim 1.

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