A distribution network isolation switch

Abstract

The present invention discloses a power distribution network isolating knife switch, comprising a fixed base, both ends of the top of the fixed base are fixedly connected with insulators, the top of the insulator at one end of the fixed base is fixedly connected with a clamping assembly, an opening and closing knife switch is rotatably installed inside the clamping assembly, the top of the insulator at the other end of the fixed base is fixedly connected with the knife switch assembly, and one end of the opening and closing knife switch is clamped and installed inside the knife switch assembly. The above scheme moves the two sides of the opening and closing blade toward each other, thereby making the opening and closing blade fit with the contact piece, making the contact piece and the opening and closing blade fit more closely, increasing the fit between the contact piece and the opening and closing blade, reducing the occurrence of overheating between the contact piece and the opening and closing blade, thereby improving the closing effect of the opening and closing blade and the contact piece, avoiding the reaction force of the extrusion spring, causing the opening and closing blade to rebound at the top of the pressing sleeve, reducing the possibility of operator misoperation, and improving the safety of the overall device.

Description

Technical Field

[0001] The present invention relates to the technical field of isolating knife switches, and more specifically, to an isolating knife switch for a distribution network. Background Art

[0002] Isolating switch is a switch device that is mainly used for "isolating power supply, switching operation, connecting and disconnecting small current circuits" and has no arc extinguishing function. When the isolating switch is in the open position, there is an insulation distance that meets the specified requirements and an obvious disconnection mark between the contacts; when in the closed position, it can carry the current under normal circuit conditions and the current under abnormal conditions (such as short circuit) within a specified time. It is generally used as a high-voltage isolating switch, that is, an isolating switch with a rated voltage of more than 1kV. Its working principle and structure are relatively simple, but due to its large usage and high working reliability requirements, it has a great impact on the design, establishment and safe operation of substations and power plants.

[0003] The isolation knife gates commonly found on the market are exposed to the outside world, so the fasteners at the ends of the knife gates, such as springs, are very likely to rust and age due to long-term erosion by the external environment, resulting in insufficient tightening of the fasteners. The knife gates are very likely to be blown away by strong winds, causing the blade to not close tightly and overheating. The rusted fasteners will also increase the difficulty of opening and closing the knife gates, making it very likely that the blade will not close fully or the blade will be pushed back by the fasteners when the knife gates are closed. In addition, since the isolation knife gates lack protective devices, they are very likely to cause misoperation and other situations, posing certain safety hazards. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a distribution network isolation knife switch, which increases the fit between the contact piece and the opening and closing blade, reduces the occurrence of overheating between the contact piece and the opening and closing blade, thereby improving the closing effect of the opening and closing blade and the contact piece, avoids the reaction force of the extrusion spring, and causes the opening and closing blade to rebound at the top of the pressing sleeve, thereby reducing the possibility of operator misoperation and improving the safety of the overall device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a power distribution network isolation knife switch, comprising a fixed base, both ends of the top of the fixed base are fixedly connected with insulators, the top of the insulator at one end of the fixed base is fixedly connected with a clamping assembly, an opening and closing knife switch is rotatably installed inside the clamping assembly, the top of the insulator at the other end of the fixed base is fixedly connected with a knife switch assembly, one end of the opening and closing knife switch is clamped and installed inside the knife switch assembly, one end of the top of the fixed base is fixedly connected with the opening and closing assembly, an insulating push frame is rotatably installed inside the opening and closing assembly, and the insulating push frame is rotatably installed at one end of the opening and closing knife switch;

[0006] The clamping assembly includes a first connecting head, a fixed block is fixedly connected to the top of the first connecting head, fixed tubes are fixedly connected to both sides of the fixed block, a movable block is movably sleeved on the top of the fixed tube, a ball is rotatably installed on the top of the movable block, a return spring is fixedly connected to one end inside the fixed tube, the return spring is movably sleeved inside the fixed tube, and the top of the return spring is fixedly connected to the bottom of the movable block.

[0007] In a preferred embodiment, the opening and closing knife switch includes two opening and closing blades, one end of the two opening and closing blades is fixedly sleeved with a rotating shaft, both ends of the rotating shaft are fixedly sleeved with a rotating disk, one end of the rotating disk is provided with a card slot, the inside of the two opening and closing blades close to the rotating shaft is fixedly connected with a connecting block, the inside of the opening and closing blades is fixedly connected with a fixing rod, and the fixing rod is rotatably mounted on one end of the insulating push frame.

[0008] In a preferred embodiment, the rotating shaft is rotatably mounted on the upper end of the fixed block, and the ball bearing is clamped and mounted inside the clamping groove.

[0009] In a preferred embodiment, the knife switch assembly includes a second connecting head, both ends of the top of the second connecting head are fixedly installed with a socket frame, the top of the second connecting head is located between the two socket frames and a contact piece is fixedly connected, the second connecting head is fixedly connected to the contact piece, the outer surface of the contact piece is movably sleeved with a pressing sleeve, a sliding groove is provided on one side of the socket frame, and a movable cavity is provided at the upper end of the socket frame, the interior of the movable cavity is fixedly connected with a track rod, the outer surface of the track rod is slidably installed with a sliding block, the top of the sliding block is fixedly connected with a pressing block, a movable groove is provided on the upper ends of the sides facing each other, one end of the pressing block is movably sleeved in the inside of the movable groove, the side of the opening and closing blade away from the rotating shaft is movably sleeved on the outer surface of the contact piece, and the pressing block is movably installed on the outer surface of one end of the opening and closing blade.

[0010] In a preferred embodiment, grooves are provided on both sides of the bottom of the pressing sleeve, and an extrusion spring is arranged inside the groove. The extrusion spring is movably sleeved on the bottom of the pressing sleeve, and rotating rods are rotatably installed at both ends of one side of the pressing sleeve. The other end of the rotating rod is rotatably installed on one side of the sliding block, and one end of the rotating rod is slidably installed inside the sliding groove, and the bottom of the extrusion spring is fixedly connected to the top of the second connecting head.

[0011] In a preferred embodiment, the fixed base frame includes a top rod, the bottom of the top rod is fixedly connected to the bottom plate, one end of the top rod is movably sleeved with a bolt block, the bottom of the bolt block is rotatably installed with a pushing rod, the bottom of the pushing rod is fixedly connected to a fixing ring, both ends of the pushing rod are fixedly connected with a clamping block, a limiting groove is provided inside the bottom plate, the pushing rod and the clamping block are movably sleeved inside the limiting groove, the outer surface of the lower end of the clamping spring is movably sleeved with a clamping spring, the clamping spring is located between the top rod and the pushing rod, and one end of the top of the top rod is fixedly connected to the limiting block.

[0012] In a preferred embodiment, the opening and closing assembly includes a fixed frame fixedly mounted on the top of the top rod, a rotating shaft is rotatably mounted on the top of the fixed frame, one end of the rotating shaft is fixedly connected to a manual operating rod, one end of the top of the top rod is fixedly connected to an opening and closing motor, the opening and closing motor is fixedly connected to the other end of the rotating shaft, the outer surfaces of both ends of the rotating shaft are fixedly connected to rotating blocks, one side of the rotating block is fixedly connected to a driving gear, the other side of the rotating block is fixedly connected to a supporting rotating rod, and one end of the supporting rotating rod is rotatably mounted with the insulating push frame.

[0013] In a preferred embodiment, the outer surface of the limit block is movably sleeved with a pushing frame, and the pushing frame is slidably installed on the top of the top rod. Both sides of the top of the pushing frame are fixedly connected with fixed racks, and the outer surface of the driving gear is meshed with the fixed rack. A bolt hole is opened on one side of the pushing frame, and the top of the bolt block is clamped and installed inside the bolt hole.

[0014] Technical effects and advantages of the present invention:

[0015] 1. In the present invention, when the opening and closing blade is sleeved on the outer surface of the contact piece, and as the opening and closing blade descends, the opening and closing blade presses the top of the pressing sleeve to compress the extrusion spring, rotate the rotating rods at both ends of the pressing sleeve, and make the sliding blocks inside the sleeve frames on both sides move toward each other, the pressing blocks move out of the inside of the movable groove, and move the two sides of the opening and closing blade toward each other, so that the opening and closing blade fits the contact piece, makes the contact piece and the opening and closing blade fit more closely, increases the fit between the contact piece and the opening and closing blade, reduces the occurrence of overheating between the contact piece and the opening and closing blade, and thus improves the closing effect of the opening and closing blade and the contact piece.

[0016] 2. The present invention provides a rotating disk and a slot. When the opening and closing blade is closed, the rotating shaft rotates at the top of the fixed block, which causes the rotating disk to rotate synchronously. When the slot rotates to the top of the ball, the fixed tube is reset to cause the ball to be engaged with the inside of the slot, thereby causing one end of the opening and closing blade to be engaged, thereby avoiding the reaction force of the extrusion spring and causing the opening and closing blade to rebound at the top of the pressing sleeve.

[0017] 3. In the present invention, since the bolt block is clamped inside the bolt hole, and since one end of the rotating block is provided with a fixed rack meshing with the fixed rack on the top of the pushing frame, when the bolt block is not opened, the supporting rotating rod cannot be rotated regardless of starting the opening and closing motor or manually pushing the manual operating lever, and the insulating pushing frame cannot push the opening and closing blade to close the gate. Therefore, before closing the gate, it is necessary to open the bolt block, thereby reducing the possibility of operator misoperation and improving the safety of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the clamping assembly of the present invention.

[0020] Figure 3 It is a schematic diagram of the opening and closing knife switch structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the knife switch assembly of the present invention.

[0022] Figure 5 It is a schematic diagram of the internal structure of the sleeve frame of the present invention.

[0023] Figure 6 It is a schematic diagram of the opening and closing component structure of the present invention.

[0024] Figure 7 It is a schematic diagram of the fixed base structure of the present invention.

[0025] The accompanying drawings are marked as follows: 1, fixed base frame; 2, insulator; 3, clamping assembly; 4, opening and closing knife switch; 5, knife switch assembly; 6, opening and closing assembly; 7, insulating push frame; 11, top rod; 12, bottom plate; 13, limiting groove; 14, pushing rod; 15, fixing ring; 16, clamping block; 17, clamping spring; 18, clamping bolt block; 19, limiting block; 31, first connector; 32, fixed block; 33, fixed tube; 34, movable block; 35, reset spring; 36, ball; 41, opening and closing blade; 42, rotating shaft; 43, rotating Moving plate; 44, slot; 45, connecting block; 46, fixing rod; 51, second connecting head; 52, sleeve frame; 53, sliding slot; 54, contact piece; 55, movable slot; 56, pressing sleeve; 57, rotating rod; 58, movable cavity; 59, track rod; 510, sliding block; 511, pressing block; 512, extrusion spring; 61, fixing frame; 62, opening and closing motor; 63, rotating shaft; 64, rotating block; 65, driving gear; 66, supporting rotating rod; 67, manual operating rod; 68, pushing frame; 69, bolt hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] First embodiment

[0028] As attached Figure 1 and 4 -6 is an embodiment of the present invention. When the isolating knife switch is in use, the opening and closing motor 62 is started to rotate the rotating shaft 63 and drive the supporting rotating rod 66 to rotate, so that the supporting rotating rod 66 pushes the insulating push frame 7, and then the insulating push frame 7 controls the opening and closing knife switch 4 to rotate at one end of the clamping assembly 3, so that the opening and closing knife switch 4 is clamped on one side of the knife switch assembly 5. In order to make the opening and closing knife switch 4 fit on the outer surface of the contact piece 54, when the opening and closing blade 41 is sleeved on the outer surface of the contact piece 54, and as the opening and closing blade 41 descends, the opening and closing blade 41 presses the top of the pressing sleeve 56 to compress the extrusion spring 512, and the rotating rods 57 at both ends of the pressing sleeve 56 rotate, and the sliding blocks 510 inside the sleeve frames 52 on both sides move toward each other, and the pressing block 511 moves out of the movable groove 55 and moves toward each other on both sides of the opening and closing blade 41, so that the opening and closing blade 41 fits with the contact piece 54.

[0029] A power distribution network isolation knife switch, comprising a fixed base frame 1, both ends of the top of the fixed base frame 1 are fixedly connected with insulators 2, the top of the insulator 2 at one end of the fixed base frame 1 is fixedly connected with a clamping assembly 3, an opening and closing knife switch 4 is rotatably installed inside the clamping assembly 3, a knife switch assembly 5 is fixedly connected to the top of the insulator 2 at the other end of the fixed base frame 1, one end of the opening and closing knife switch 4 is clamped and installed inside the knife switch assembly 5, one end of the top of the fixed base frame 1 is fixedly connected with an opening and closing assembly 6, an insulating push frame 7 is rotatably installed inside the opening and closing assembly 6, and the insulating push frame 7 is rotatably installed at one end of the opening and closing knife switch 4;

[0030] As attached Figure 4As shown, the knife switch assembly 5 includes a second connecting head 51, both ends of the top of the second connecting head 51 are fixedly installed with a socket frame 52, the top of the second connecting head 51 is located between the two socket frames 52 and fixedly connected with a contact piece 54, the second connecting head 51 is fixedly connected to the contact piece 54, the outer surface of the contact piece 54 is movably sleeved with a pressing sleeve 56, a sliding groove 53 is provided on one side of the socket frame 52, and an active cavity 58 is provided at the upper end of the socket frame 52, the interior of the active cavity 58 is fixedly connected with a track rod 59, the outer surface of the track rod 59 is slidably installed with a sliding block 510, and the top of the sliding block 510 is fixedly connected with a pressing block 511, a movable groove 55 is provided at the upper end of the side facing each other of the two socket frames 52, one end of the pressing block 511 is movably sleeved in the inside of the movable groove 55, the side of the opening and closing blade 41 away from the rotating shaft 42 is movably sleeved on the outer surface of the contact piece 54, and the pressing block 511 is movably installed on the outer surface of one end of the opening and closing blade 41.

[0031] By setting the track rod 59, the sliding block 510 is limited. When the top of the pressing sleeve 56 is pressed, the extrusion spring 512 will be compressed, the pressing sleeve 56 will descend, and the rotating rod 57 will be driven to descend and rotate, pushing the sliding block 510 to move to one side of the opening and closing blade 41, so that the pressing block 511 squeezes one side of the opening and closing blade 41, so that the contact piece 54 and the opening and closing blade 41 are more closely fitted, the fit between the contact piece 54 and the opening and closing blade 41 is increased, and the occurrence of overheating between the contact piece 54 and the opening and closing blade 41 is reduced, thereby improving the closing effect of the opening and closing blade 41 and the contact piece 54.

[0032] Among them, grooves are opened on both sides of the bottom of the pressing sleeve 56, and an extrusion spring 512 is arranged inside the groove. The extrusion spring 512 is movably sleeved on the bottom of the pressing sleeve 56. The two ends of one side of the pressing sleeve 56 are rotatably installed with a rotating rod 57. The other end of the rotating rod 57 is rotatably installed on one side of the sliding block 510. One end of the rotating rod 57 is slidably installed inside the sliding groove 53. The bottom of the extrusion spring 512 is fixedly connected to the top of the second connecting head 51.

[0033] Among them, the opening and closing knife switch 4 includes two opening and closing blades 41, one end of the two opening and closing blades 41 is fixedly sleeved with a rotating shaft 42, both ends of the rotating shaft 42 are fixedly sleeved with a rotating disk 43, one end of the rotating disk 43 is provided with a card slot 44, the inside of the two opening and closing blades 41 close to the rotating shaft 42 is fixedly connected with a connecting block 45, the inside of the opening and closing blades 41 is fixedly connected with a fixing rod 46, and the fixing rod 46 is rotatably installed with one end of the insulating push frame 7.

[0034] One end of the opening and closing blade 41 close to the rotating shaft 42 is fixedly connected to the connecting block 45. At this time, the other ends of the two opening and closing blades 41 are in a suspended state. When the opening and closing blades 41 are closed inside the socket frame 52, one end of the opening and closing blades 41 is socketed on the outer surface of the contact piece 54. At this time, the pressing blocks 511 on both sides of the socket frame 52 face each other, and the pressing blocks 511 squeeze one end of the opening and closing blade 41, so that the opening and closing blade 41 is deformed and fits the contact piece 54.

[0035] Second embodiment

[0036] As attached Figure 1-6 This is an embodiment of the present invention. On the basis of the first embodiment, when the opening and closing blade 41 rotates to the inside of the second connecting head 51, it will be pressed down to the top of the pressing sleeve 56, so that the pressing block 511 squeezes the opening and closing blade 41, thereby making the opening and closing blade 41 and the contact piece 54 fit more tightly, but the extrusion spring 512 will be compressed, causing the opening and closing blade 41 to generate an opposite force. By providing a rotating disk 43 and a slot 44, when the opening and closing blade 41 is closed, the rotating shaft 42 rotates on the top of the fixed block 32, causing the rotating disk 43 to rotate synchronously. When the slot 44 rotates to the top of the ball 36, the ball 36 is clamped in the inside of the slot 44 through the reset of the fixed tube 33, thereby causing one end of the opening and closing blade 41 to be clamped, thereby avoiding the reaction force of the extrusion spring 512, causing the opening and closing blade 41 to rebound at the top of the pressing sleeve 56.

[0037] The second embodiment is further optimized relative to the first embodiment in that: the clamping assembly 3 includes a first connecting head 31, the top of the first connecting head 31 is fixedly connected to a fixed block 32, both sides of the fixed block 32 are fixedly connected to fixed tubes 33, the top of the fixed tube 33 is movably sleeved with a movable block 34, the top of the movable block 34 is rotatably mounted with a ball 36, one end of the fixed tube 33 is fixedly connected to a return spring 35, the return spring 35 is movably sleeved inside the fixed tube 33, and the top of the return spring 35 is fixedly connected to the bottom of the movable block 34.

[0038] The rotating shaft 42 is rotatably mounted on the upper end of the fixing block 32 , and the ball 36 is clamped and mounted inside the clamping groove 44 .

[0039] By providing the ball 36 and the return spring 35, when the opening and closing knife gate 4 is in the open state, the rotating disk 43 is always in the state of being pressed by the ball 36, so that it is located inside the fixed tube 33. When the gate is closed, when one side of the slot 44 rotates to one end of the ball 36, the return spring 35 pushes the movable block 34 and the ball 36 to rise through the reaction force, so that the ball 36 is clamped in the inside of the slot 44. Due to the arc shape of the outer surface of the ball 36, when the opening and closing blade 41 is opened again, a certain rotation force is required to make one side of the rotating disk 43 squeeze the top of the ball 36 and press it to the top of the fixed tube 33 again, so that the opening and closing blade 41 can rotate on the top of the fixed block 32.

[0040] Third embodiment

[0041] As attached Figure 6-7 This is an embodiment of the present invention. Since the bolt block 18 is clamped in the bolt hole 69, and since one end of the rotating block 64 is provided with a fixed rack meshing with the fixed rack on the top of the pushing frame 68, when the bolt block 18 is not opened, the supporting rotating rod 66 cannot be rotated regardless of starting the opening and closing motor 62 or manually pushing the manual operating lever 67, and the insulating pushing frame 7 cannot push the opening and closing blade 41 to close the gate. Therefore, before closing the gate, it is necessary to open the bolt block 18, thereby reducing the possibility of operator misoperation and improving the safety of the overall device.

[0042] The third embodiment is further optimized relative to the second embodiment in that the fixed base frame 1 includes a top rod 11, the bottom of the top rod 11 is fixedly connected to a bottom plate 12, one end of the top rod 11 is movably sleeved with a bolt block 18, a push rod 14 is rotatably installed at the bottom of the bolt block 18, the bottom of the push rod 14 is fixedly connected to a fixing ring 15, both ends of the push rod 14 are fixedly connected with a clamping block 16, a limiting groove 13 is provided inside the bottom plate 12, the push rod 14 and the clamping block 16 are movably sleeved inside the limiting groove 13, the outer surface of the lower end of the clamping block 18 is movably sleeved with a clamping spring 17, the clamping spring 17 is located between the top rod 11 and the push rod 14, and one end of the top of the top rod 11 is fixedly connected to the limiting block 19.

[0043] A limiting groove 13 is provided through the bottom plate 12. When the bolt block 18 needs to be opened and the bolt block 18 is disengaged from the inside of the bolt hole 69, the fixing ring 15 needs to be pushed upwards to compress the clamping spring 17 so that the push rod 14 and the clamping block 16 pass through the inside of the limiting groove 13. The fixing ring 15 is rotated and the clamping block 16 is clamped to the top of the bottom plate 12 by the reaction force of the clamping spring 17. The bolt block 18 rises during the rising process of the push rod 14 so that the bolt block 18 is disengaged from the inside of the bolt hole 69. At this time, the opening and closing motor 62 and the manual operating lever 67 are started to rotate the rotating block 64 and the supporting rotating rod 66 to realize the opening and closing of the opening and closing blade 41.

[0044] Among them, the opening and closing component 6 includes a fixed frame 61 fixedly installed on the top of the top rod 11, a rotating shaft 63 is rotatably installed on the top of the fixed frame 61, one end of the rotating shaft 63 is fixedly connected to a manual operating rod 67, one end of the top of the top rod 11 is fixedly connected to an opening and closing motor 62, the opening and closing motor 62 is fixedly connected to the other end of the rotating shaft 63, the outer surfaces of both ends of the rotating shaft 63 are fixedly connected to a rotating block 64, one side of the rotating block 64 is fixedly connected to a driving gear 65, and the other side of the rotating block 64 is fixedly connected to a supporting rotating rod 66, and one end of the supporting rotating rod 66 is rotatably installed with the insulating push frame 7.

[0045] Among them, the outer surface of the limit block 19 is movably sleeved with a push frame 68, and the push frame 68 is slidably installed on the top of the top rod 11. Both sides of the top of the push frame 68 are fixedly connected with fixed racks, and the outer surface of the driving gear 65 is meshed with the fixed rack. A bolt hole 69 is opened on one side of the push frame 68, and the top of the bolt block 18 is clamped and installed inside the bolt hole 69.

[0046] The working principle of the present invention is as follows: when the isolating knife switch is in use, the opening and closing motor 62 is started, the rotating shaft 63 is rotated, and the supporting rotating rod 66 is driven to rotate, so that the supporting rotating rod 66 pushes the insulating push frame 7, and then the insulating push frame 7 controls the opening and closing knife switch 4 to rotate at one end of the clamping assembly 3, so that the opening and closing knife switch 4 is clamped on one side of the knife switch assembly 5, in order to make the opening and closing knife switch 4 fit the outer surface of the contact piece 54, when the opening and closing blade 41 is sleeved on the outer surface of the contact piece 54, and as the opening and closing blade 41 descends, the opening and closing blade 41 presses the top of the pressing sleeve 56, so that the extrusion spring 512 is compressed, and the rotating rods 57 at both ends of the pressing sleeve 56 rotate, and the sliding blocks 510 inside the sleeve frames 52 on both sides move toward each other, and the pressing block 511 moves out of the movable groove 55, and squeezes the two sides of the opening and closing blade 41 to move toward each other, so that the opening and closing blade 41 fits the contact piece 54;

[0047] When the opening and closing blade 41 rotates to the inside of the second connector 51, it presses down to the top of the pressing sleeve 56, so that the pressing block 511 squeezes the opening and closing blade 41, thereby making the opening and closing blade 41 and the contact piece 54 fit more tightly. However, the squeezing spring 512 will be compressed, so that the opening and closing blade 41 generates an opposite force. Therefore, when the opening and closing knife gate 4 is in the open state, the rotating disk 43 is always in the state of being pressed by the ball 36, so that it is located inside the fixed tube 33. When the gate is closed, When one side of the slot 44 rotates to one end of the ball 36, the return spring 35 pushes the movable block 34 and the ball 36 upward through the reaction force, so that the ball 36 is clamped in the inside of the slot 44. Because the outer surface of the ball 36 is in an arc shape, when the opening and closing blade 41 is opened again, a certain rotation force is required to make one side of the rotating disk 43 squeeze the top of the ball 36 and press it to the top of the fixed tube 33 again, so that the opening and closing blade 41 can be rotated on the top of the fixed block 32.

[0048] Since the bolt block 18 is clamped in the bolt hole 69, and since one end of the rotating block 64 is provided with a fixed rack meshing with the fixed rack on the top of the pushing frame 68, when the bolt block 18 is not opened, whether by starting the opening and closing motor 62 or manually pushing the manual operating rod 67, when it is necessary to open the bolt block 18 and disengage the bolt block 18 from the inside of the bolt hole 69, it is necessary to push the fixing ring 15 upwards, the clamping spring 17 is compressed, and the pushing rod 14 and the clamping block 16 pass through the inside of the limiting groove 13, and by rotating the fixing ring 15 and through the reaction force of the clamping spring 17, the clamping block 16 is clamped on the top of the bottom plate 12. The bolt block 18 rises during the rising process of the pushing rod 14, so that the bolt block 18 is disengaged from the inside of the bolt hole 69. At this time, the opening and closing motor 62 and the manual operating rod 67 are started to rotate the rotating block 64 and the supporting rotating rod 66 to realize the opening and closing of the opening and closing blade 41.

[0049] Finally, a few points should be explained: the drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power distribution network isolating switch, comprising a fixed base frame (1), wherein both ends of the top of the fixed base frame (1) are fixedly connected to insulators (2), characterized in that: The top of the insulator (2) at one end of the fixed base (1) is fixedly connected with a clamping assembly (3), an opening and closing knife switch (4) is rotatably mounted inside the clamping assembly (3), the top of the insulator (2) at the other end of the fixed base (1) is fixedly connected with a knife switch assembly (5), one end of the opening and closing knife switch (4) is clamped and mounted inside the knife switch assembly (5), one end of the top of the fixed base (1) is fixedly connected with an opening and closing assembly (6), an insulating push frame (7) is rotatably mounted inside the opening and closing assembly (6), and the insulating push frame (7) is rotatably mounted on one end of the opening and closing knife switch (4); The clamping assembly (3) comprises a first connector (31), the top of the first connector (31) is fixedly connected to a fixed block (32), both sides of the fixed block (32) are fixedly connected to fixed tubes (33), the top of the fixed tube (33) is movably sleeved with a movable block (34), the top of the movable block (34) is rotatably mounted with a ball (36), one end of the interior of the fixed tube (33) is fixedly connected to a return spring (35), the return spring (35) is movably sleeved inside the fixed tube (33), and the top of the return spring (35) is fixedly connected to the bottom of the movable block (34); The opening and closing knife switch (4) comprises two opening and closing blades (41), one end of the two opening and closing blades (41) is fixedly sleeved with a rotating shaft (42), both ends of the rotating shaft (42) are fixedly sleeved with a rotating disk (43), one end of the rotating disk (43) is provided with a slot (44), the inside of the two opening and closing blades (41) close to the rotating shaft (42) is fixedly connected with a connecting block (45), the inside of the opening and closing blades (41) is fixedly connected with a fixing rod (46), and the fixing rod (46) is rotatably mounted on one end of the insulating push frame (7); The rotating shaft (42) is rotatably mounted on the upper end of the fixed block (32), and the ball (36) is clamped and mounted inside the clamping groove (44); The knife switch assembly (5) comprises a second connector (51), both ends of the top of the second connector (51) are fixedly mounted with socket frames (52), the top of the second connector (51) is located between the two socket frames (52) and is fixedly connected with a contact sheet (54), the second connector (51) is fixedly connected to the contact sheet (54), the outer surface of the contact sheet (54) is movably socketed with a pressing sleeve (56), one side of the socket frame (52) is provided with a sliding groove (53), the upper end of the socket frame (52) is provided with an active cavity (58), and the active cavity (58) is ) is fixedly connected to the inside of a track rod (59), a sliding block (510) is slidably mounted on the outer surface of the track rod (59), a pressing block (511) is fixedly connected to the top of the sliding block (510), a movable groove (55) is formed at the upper ends of the two sleeve frames (52) facing each other, one end of the pressing block (511) is movably sleeved inside the movable groove (55), a side of the opening and closing blade (41) away from the rotating shaft (42) is movably sleeved on the outer surface of the contact piece (54), and the pressing block (511) is movably mounted on the outer surface of one end of the opening and closing blade (41); Grooves are provided on both sides of the bottom of the pressing sleeve (56), and a pressing spring (512) is provided inside the groove. The pressing spring (512) is movably sleeved on the bottom of the pressing sleeve (56). A rotating rod (57) is rotatably installed at both ends of one side of the pressing sleeve (56). The other end of the rotating rod (57) is rotatably installed on one side of the sliding block (510). One end of the rotating rod (57) is slidably installed inside the sliding groove (53). The bottom of the pressing spring (512) is fixedly connected to the top of the second connector (51). The fixed base frame (1) comprises a top rod (11), the bottom of the top rod (11) is fixedly connected to a bottom plate (12), one end of the top rod (11) is movably sleeved with a latch block (18), a push rod (14) is rotatably mounted at the bottom of the latch block (18), the bottom of the push rod (14) is fixedly connected to a fixing ring (15), both ends of the push rod (14) are fixedly connected to a latch block (16), a limiting groove (13) is provided inside the bottom plate (12), the push rod (14) and the latch block (16) are movably sleeved inside the limiting groove (13), a clamping spring (17) is movably sleeved on the outer surface of the lower end of the latch block (18), the clamping spring (17) is located between the top rod (11) and the push rod (14), and one end of the top of the top rod (11) is fixedly connected to the limiting block (19); The opening and closing assembly (6) comprises a fixing frame (61) fixedly mounted on the top of the top rod (11); a rotating shaft (63) is rotatably mounted on the top of the fixing frame (61); one end of the rotating shaft (63) is fixedly connected to a manual operating rod (67); one end of the top of the top rod (11) is fixedly connected to an opening and closing motor (62); the opening and closing motor (62) is fixedly connected to the other end of the rotating shaft (63); rotating blocks (64) are fixedly connected to the outer surfaces of both ends of the rotating shaft (63); one side of the rotating block (64) is fixedly connected to a driving gear (65); the other side of the rotating block (64) is fixedly connected to a supporting rotating rod (66); one end of the supporting rotating rod (66) is rotatably mounted to the insulating push frame (7); The outer surface of the limit block (19) is movably sleeved with a push frame (68), and the push frame (68) is slidably mounted on the top of the top rod (11). Both sides of the top of the push frame (68) are fixedly connected with fixed racks, and the outer surface of the driving gear (65) is meshed with the fixed rack. A bolt hole (69) is opened on one side of the push frame (68), and the top of the bolt block (18) is clamped and mounted inside the bolt hole (69).

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