35kV isolation switch opening and closing device

Abstract

The invention provides a 35kV isolation switch opening and closing device. The 35kV isolation switch opening and closing device comprises a substrate, a contact unit, a transmission assembly and a driving unit. The substrate is provided with two composite post insulators which are arranged at an interval; the contact unit comprises a first connecting part and a second connecting part, the first connecting part is connected with one composite post insulator, and the second connecting part can be connected with the other composite post insulator; the transmission assembly is arranged in the vertical direction, and the top end is connected with the second connecting part. The driving unit is connected with the bottom end of the transmission assembly and used for driving the transmission assembly to move in the vertical direction, and the transmission assembly drives the second connecting part to move; wherein the driving unit drives the transmission assembly to move, and the transmission assembly drives the second connecting part to be in contact with or disconnected from the corresponding composite post insulator, so that switching-on or switching-off is realized. The invention provides a 35kV isolation knife switch opening and closing device, and aims to solve the problem of poor safety caused by manual close-range opening and closing of an isolation knife switch in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of isolating switch technology, specifically relating to a 35kV isolating switch opening and closing device. Background Technology

[0002] In power systems, 35kV disconnectors are mainly used for the isolation, switching, and creation of clear disconnection points during power line maintenance to ensure the safe operation of the power system. The performance of disconnectors directly affects the stability and reliability of the power grid.

[0003] In existing technologies, traditional isolating switches are manually opened and closed at close range. When the switch is opened, the high-voltage electric field ionizes the surrounding air, generating numerous electric sparks and forming an arc discharge. This arc can not only burn the operator, but the high temperature and intense light it produces can also cause direct harm to the human body. In harsh environments such as humid and dusty conditions, the arc range expands, further exacerbating the safety risks and resulting in poor safety. Summary of the Invention

[0004] This invention provides a 35kV isolating switch opening and closing device, which aims to solve the problem of poor safety in the prior art of manually opening and closing isolating switches at close range.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a 35kV isolating switch opening and closing device, comprising: A substrate, on which two spaced-apart composite post insulators are provided; The contact unit includes a first connecting part and a second connecting part, wherein the first connecting part is connected to one of the composite post insulators, and the second connecting part is connected to the other composite post insulator; The transmission component is arranged vertically, and its top end is connected to the second connecting part; A drive unit is connected to the bottom end of the transmission assembly and is used to drive the transmission assembly to move in a vertical direction, and the transmission assembly drives the second connecting part to move. The drive unit drives the transmission assembly to move, and the transmission assembly drives the second connecting part to contact or disconnect with the corresponding composite post insulator to realize the closing or opening of the circuit.

[0006] In one possible implementation, the contact unit further includes a connecting rod, one end of which is connected to the first connecting portion and the other end of which is connected to the second connecting portion.

[0007] In one possible implementation, the first connecting portion includes: A connecting seat is provided on the composite post insulator; A rotating shaft is rotatably connected to the connecting seat, and the axis of rotation of the rotating shaft is set in the horizontal direction; Two adapter plates are provided, which are spaced apart along the length of the rotation shaft. One end of each adapter plate is connected to the rotation shaft, and the other end is connected to the connecting rod.

[0008] In one possible implementation, the second connecting portion includes: Two contact pieces are provided, which are spaced apart along the length of the rotation axis, and both contact pieces are connected to the connecting rod. The first contact rod is provided with at least two, each first contact rod is spaced apart, one end of each first contact rod is connected to one of the contact pieces, and the other end extends along the length direction of the rotation axis; The second contact rod is provided in at least two. One end of each second contact rod is connected to another contact piece, and the other end extends along the length direction of the rotation axis. Each second contact rod is provided in a one-to-one correspondence with each first contact rod, and a gap is provided between each second contact rod and the corresponding first contact rod.

[0009] In one possible implementation, the end of each second contact rod away from the first contact rod extends out of the contact piece; the second connecting portion further includes: The first limiting member is disposed at the extended end of the second contact rod; The first spring is provided in at least two, and each first spring is arranged in a one-to-one correspondence with each second contact rod. Each first spring is sleeved on the protruding part of the corresponding second contact rod, and one end of the first spring abuts against the contact piece and the other end abuts against the first limiting member.

[0010] In one possible implementation, the transmission assembly includes: Mounting rack; The reel is rotatably mounted on the mounting bracket; A pull rope is wound around the spool, the pull rope having a free end, and a snap-fit ​​block is provided at the free end; A sleeve rod is fitted around the outer circumference of the pull rope; A return spring is located in the sleeve rod, with its top end connected to the sleeve rod and its bottom end connected to the pull rope. The pull rope moves downward and is wound up by the reel. The pull rope drives the locking block to move downward to connect with the first contact rod and the second contact rod.

[0011] In one possible implementation, the driving unit includes: Base; A first rotating shaft is rotatably mounted on the base, and a first gear is provided on the first rotating shaft; The second rotating shaft is rotatably mounted on the mounting bracket and connected to the reel. The second rotating shaft is provided with a second gear, which meshes with the first gear for transmission.

[0012] In one possible implementation, a handle is provided at one end of the first rotating shaft.

[0013] In one possible implementation, the drive unit further includes an engagement structure, the engagement structure comprising: A third rotating shaft is rotatably mounted on the base, and a third gear is provided on the third rotating shaft, which abuts against the first rotating shaft; A locking component is disposed on the base and engages with the third gear.

[0014] In one possible implementation, the locking element includes: The mounting shaft is mounted on the base. The contact block is slidably disposed on the mounting shaft and has a snap-fit ​​end adapted to the tooth groove of the third gear; An irregularly shaped spring is disposed on the mounting shaft and abuts against the contact block, for driving the contact block to move.

[0015] The beneficial effects of the 35kV isolating switch opening and closing device provided by this invention are as follows: Compared with the prior art, by setting two composite post insulators on the substrate, the contact unit includes a first connecting part and a second connecting part. The first connecting part is connected to one of the composite post insulators, and the second connecting part can be connected to the other composite post insulator. The top end of the transmission assembly is connected to the second connecting part, and the driving unit is connected to the bottom end of the transmission assembly. The driving unit drives the transmission assembly to move vertically, thereby the transmission assembly drives the first connecting part to move, and then the second connecting part contacts or disconnects with the corresponding composite post insulator, realizing closing or opening. In this application, by setting a transmission assembly, which is set vertically, with its top end connected to the second connecting part, and a driving unit connected to the transmission assembly, the driving unit drives the transmission assembly to move vertically, thereby the transmission assembly drives the first connecting part to move, and then the second connecting part contacts or disconnects with the corresponding composite post insulator, realizing closing or opening, the distance between the operator and the isolating switch is increased, avoiding electric arc injury to the operator, improving safety, and having good practicality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a 35kV isolating switch opening and closing device provided in an embodiment of the present invention; Figure 2A schematic diagram illustrating the assembly of the base plate, composite post insulator, contact unit, pull rope, and reset spring of a 35kV isolating switch opening and closing device provided in an embodiment of the present invention. Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 for Figure 2 Enlarged structural diagram at point B; Figure 5 This is an exploded structural diagram of the drive unit of a 35kV isolating switch opening and closing device provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the locking structure of a 35kV isolating switch opening and closing device provided in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 10. Base plate; 20. Contact unit; 21. First connecting part; 211. Connecting seat; 212. Rotating shaft; 213. Adapter plate; 214. Support rod; 215. Second spring; 22. Second connecting part; 221. Contact piece; 222. First contact rod; 223. Second contact rod; 224. First limiting member; 225. First spring; 23. Connecting rod; 30. Transmission assembly; 31. Mounting bracket; 32. Reel; 33. Pull rope; 34. Sleeve rod; 35. Return spring; 36. Snap-fit ​​block; 40. Drive unit; 41. Base; 42. First rotating shaft; 43. First gear; 44. Second rotating shaft; 45. Second gear; 46. Handle; 47. Snap-fit ​​structure; 471. Third gear; 472. Mounting shaft; 473. Contact block; 474. Irregular spring; 48. Housing; 50. Composite post insulator. Detailed Implementation

[0018] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0019] It should be noted that the terms "length", "width", "height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", and "tail" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0020] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Additionally, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0022] Please refer to the following: Figures 1 to 6 This invention provides a 35kV isolating switch opening and closing device. The 35kV isolating switch opening and closing device includes a base plate 10, a contact unit 20, a transmission assembly 30, and a drive unit 40. Two composite post insulators 50 are provided on the base plate 10, spaced apart. The contact unit 20 includes a first connecting portion 21 and a second connecting portion 22. The first connecting portion 21 is connected to one of the composite post insulators 50, and the second connecting portion 22 is connected to the other composite post insulator 50. The transmission assembly 30 is arranged vertically, and its top end is connected to the second connecting portion 22. The drive unit 40 is connected to the bottom end of the transmission assembly 30, and is used to drive the transmission assembly 30 to move vertically. The transmission assembly 30 drives the second connecting portion 22 to move. Specifically, the drive unit 40 drives the transmission assembly 30 to move, and the transmission assembly 30 causes the second connecting portion 22 to contact or disconnect with the corresponding composite post insulator 50, thus achieving closing or opening of the switch.

[0023] In this embodiment, two composite post insulators 50 are disposed on the substrate 10, with the two composite post insulators 50 spaced apart. The contact unit 20 includes a first connecting portion 21 and a second connecting portion 22. The first connecting portion 21 is connected to one of the composite post insulators 50, and the second connecting portion 22 is connected to the other composite post insulator 50. The top end of the transmission assembly 30 is connected to the second connecting portion 22. The drive unit 40 is connected to the bottom end of the transmission assembly 30 and is used to drive the transmission assembly 30 to move in the vertical direction, thereby causing the second connecting portion 22 to move. Specifically, the drive unit 40 drives the transmission assembly 30 to move, and the transmission assembly 30 causes the second connecting portion 22 to contact or disconnect from the corresponding composite post insulator 50, thereby achieving closing or opening of the circuit breaker.

[0024] This invention provides a 35kV isolating switch opening and closing device. Compared with the prior art, it uses two composite post insulators 50 on a base plate 10. The contact unit 20 includes a first connecting part 21 and a second connecting part 22. The first connecting part 21 is connected to one of the composite post insulators 50, and the second connecting part 22 is connected to the other composite post insulator 50. The top end of the transmission assembly 30 is connected to the second connecting part 22, and the driving unit 40 is connected to the bottom end of the transmission assembly 30. The driving unit 40 drives the transmission assembly 30 to move vertically, thereby causing the transmission assembly 30 to move the first connecting part 21. Consequently, the second connecting part 22 contacts or disconnects from the corresponding composite post insulator 50, realizing the closing or opening of the switch. In this application, a transmission assembly 30 is provided, which is arranged vertically. The top end of the transmission assembly 30 is connected to the second connecting part 22, and a driving unit 40 is connected to the transmission assembly 30. The driving unit 40 drives the transmission assembly 30 to move vertically, thereby causing the transmission assembly 30 to move the first connecting part 21. Then, the second connecting part 22 contacts or disconnects from the corresponding composite post insulator 50, realizing the closing or opening of the circuit breaker. This increases the distance between the operator and the isolating switch, avoids electric arc from causing injury to the operator, improves safety, and has good practicality.

[0025] A disconnecting switch generally refers to a disconnecting circuit breaker. A disconnecting switch is a switching device primarily used for isolating power sources, switching operations, and connecting and disconnecting small-current circuits; it lacks arc-extinguishing capabilities. When in the open position, the disconnecting switch has a specified insulation distance between its contacts and a clear disconnection mark; when in the closed position, it can carry current under normal circuit conditions and current under abnormal conditions (such as short circuits) for a specified time. The main characteristic of a disconnecting switch is that it lacks arc-extinguishing capability and can only open and close circuits when there is no load current.

[0026] Disconnecting switches (isolating switches) create a clear disconnection point, ensuring the safety of maintenance personnel and equipment, especially during high-voltage circuit maintenance, where they reliably isolate the power supply. They have a simple structure and are usually operated manually or by a motor, requiring no complex control circuits. Disconnecting switches are the most numerous type of switch in power systems, used for the safety of maintenance of equipment such as busbars and surge arresters.

[0027] In some embodiments, please refer to Figure 1 The contact unit 20 also includes a connecting rod 23, one end of which is connected to the first connecting part 21 and the other end is connected to the second connecting part 22, thereby connecting the first connecting part 21 and the second connecting part 22 together through the connecting rod 23.

[0028] In some embodiments, please refer to Figure 2 and Figure 3The first connecting part 21 includes a connecting seat 211, a rotating shaft 212, and an adapter plate 213. The connecting seat 211 is disposed on the composite post insulator 50. The rotating shaft 212 is rotatably connected to the connecting seat 211, and the rotation axis of the rotating shaft 212 is arranged in the horizontal direction. Two adapter plates 213 are provided, and the two adapter plates 213 are spaced apart along the length direction of the rotating shaft 212. One end of each adapter plate 213 is connected to the rotating shaft 212, and the other end is connected to the connecting rod 23. In this embodiment, the rotating shaft 212 is rotatably connected to the connecting seat 211, the connecting seat 211 is disposed on the composite post insulator 50, and the rotation axis of the rotating shaft 212 is arranged in the horizontal direction. Two adapter plates 213 are provided, which are spaced apart along the length of the rotating shaft 212. One end of each adapter plate 213 is connected to the rotating shaft 212, and the other end is connected to the connecting rod 23. Thus, they are connected to the composite post insulator 50 through the connecting seat 211. The rotating shaft 212 is rotatably connected to the connecting seat 211. One end of each adapter plate 213 is connected to the rotating shaft 212, and the other end is connected to the connecting rod 23. Thus, the connecting seat 211, the rotating shaft 212, and the connecting rod 23 are connected through the adapter plates 213.

[0029] In some embodiments, please refer to Figure 2 and Figure 4 The second connecting part 22 includes a contact piece 221, a first contact rod 222, and a second contact rod 223. There are two contact pieces 221, spaced apart along the length of the rotation shaft 212, and both contact pieces 221 are connected to the connecting rod 23. There are at least two first contact rods 222, spaced apart, with one end connected to one of the contact pieces 221 and the other end extending along the length of the rotation shaft 212. There are at least two second contact rods 223, with one end connected to another contact piece 221 and the other end extending along the length of the rotation shaft 212. Each second contact rod 223 corresponds to one of the first contact rods 222, with a gap between each second contact rod 223 and its corresponding first contact rod 222. In this embodiment, there are two contact pieces 221, spaced apart along the length of the rotation shaft 212, thereby connecting the two contact pieces 221 to the connecting rod 23. At least two first contact rods 222 are provided, and each first contact rod 222 is spaced apart. One end of each first contact rod 222 is connected to one of the contact pieces 221, and the other end extends along the length direction of the rotating shaft 212. At least two second contact rods 223 are provided, and one end of each second contact rod 223 is connected to another contact piece 221, and the other end extends along the length direction of the rotating shaft 212. Each second contact rod 223 is provided in a one-to-one correspondence with each first contact rod 222, and there is a gap between each second contact rod 223 and the corresponding first contact rod 222, so that each first contact rod 222 and each second contact rod 223 can be connected to the transmission assembly 30.

[0030] In some embodiments, please refer to Figure 2 and Figure 4 Each second contact rod 223 extends from the contact piece 221 at the end furthest from the first contact rod 222. The second connecting part 22 also includes a first limiting member 224 and a first spring 225. The first limiting member 224 is disposed at the extended end of the second contact rod 223. At least two first springs 225 are provided, each first spring 225 corresponding to each second contact rod 223. Each first spring 225 is sleeved on the extended part of the corresponding second contact rod 223, with one end of the first spring 225 abutting against the contact piece 221 and the other end abutting against the first limiting member 224. In this embodiment, the end of each second contact rod 223 away from the first contact rod 222 extends out of the contact piece 221. A first limiting member 224 is provided at the extended end of the second contact rod 223, and a first spring 225 is sleeved on the extended part of each second contact rod 223. One end of each first spring 225 abuts against the contact piece 221, and the other end abuts against the first limiting member 224. Thus, the contact piece 221, the first contact rod 222, and the second contact rod 223 combine to form a conductive contact unit. In addition, the preload design of the first limiting member 224 and the first spring 225 ensures that the conductive contact is tight and stable when the circuit is closed. When the circuit is closed, the contact piece 221 contacts and is pressed against the external component. The first spring 225 is compressed, and its elastic force is transmitted to the first contact rod 222 through the second contact rod 223, and finally acts on the contact piece 221, so that the contact piece 221 fits tightly against the external component. When the circuit breaker is opened, the contact piece 221 disengages from the external component, and the first spring 225 returns to its original state, storing preload for the next closing operation.

[0031] Furthermore, one end of the support rod 214 extends out of the adapter plate 213. A second limiting member is provided on the end of the extended end of the support rod 214, and a second spring 215 is sleeved on the extended end of the support rod 214. One end of the second spring 215 abuts against the adapter plate 213, and the other end abuts against the second limiting member. The second spring 215 provides buffering and reset assistance force for the rotation of the adapter plate 213, reducing the impact during the rotation process, while ensuring the positional stability of the adapter plate 213 in the non-operating state and preventing loosening. When the adapter plate 213 rotates around the rotation axis 212, the support rod 214 moves with the adapter plate 213, and the second spring 215 is compressed or stretched, generating a reverse elastic force. When the operating force is removed, the elastic force of the second spring 215 can assist the adapter plate 213 to return to the initial position, reducing mechanical wear.

[0032] In some embodiments, please refer to Figure 2The transmission assembly 30 includes a mounting frame 31, a reel 32, a pull rope 33, a sleeve 34, and a return spring 35. The reel 32 is rotatably mounted on the mounting frame 31, and the pull rope 33 is wound around the reel 32. The pull rope 33 has a free end, at which a locking block 36 is provided. The sleeve 34 is sleeved around the outer periphery of the pull rope 33. The return spring 35 is located in the sleeve 34, with its top end connected to the sleeve 34 and its bottom end connected to the pull rope 33. When the pull rope 33 moves downward, the reel 32 winds it up, causing the locking block 36 to move downward to connect with the first contact rod 222 and the second contact rod 223. In this embodiment, the reel 32 is rotatably mounted on the mounting frame 31, and the pull rope 33 is wound around the reel 32. The pull rope 33 has a free end, at which a locking block 36 is provided. During the downward movement of the pull rope 33, the reel 32 winds the pull rope 33, causing the locking block 36 to move downward to connect with the first contact rod 222 and the second contact rod 223. A sleeve rod 34 is fitted around the outer periphery of the pull rope 33, and a return spring 35 is provided in the sleeve rod 34. The top end of the return spring 35 is connected to the sleeve rod 34, and the bottom end is connected to the pull rope 33. Thus, during the winding of the pull rope 33, the pull rope 33 causes the return spring 35 to extend, that is, during the closing process, the return spring 35 extends. During the opening process, the pull rope 33 is released from the reel 32, and the return spring 35 returns to its natural state.

[0033] Example 1: In some embodiments, please refer to Figure 5 The drive unit 40 includes a base 41, a first rotating shaft 42, and a second rotating shaft 44. The first rotating shaft 42 is rotatably mounted on the base 41 and has a first gear 43. The second rotating shaft 44 is rotatably mounted on a mounting frame 31 and connected to a reel 32. The second rotating shaft 44 has a second gear 45, which meshes with the first gear 43 for transmission. In this embodiment, the first rotating shaft 42 is rotatably mounted on the base 41 and has a first gear 43. The second rotating shaft 44 is rotatably mounted on the mounting frame 31 and connected to the reel 32. The second rotating shaft 44 has a second gear 45, which meshes with the first gear 43 for transmission. Thus, the rotation of the first rotating shaft 42 drives the rotation of the first gear 43, and the meshing of the second gear 45 with the first gear 43 further enables the second gear 45 to drive the rotation of the second rotating shaft 44, which in turn drives the rotation of the reel 32, thereby achieving the winding and unwinding of the pull rope 33.

[0034] In some embodiments, please refer to Figure 5 and Figure 6The drive unit 40 also includes a locking structure 47, which includes a third rotating shaft and a locking member. The third rotating shaft is rotatably mounted on the base 41, and a third gear 471 is mounted on the third rotating shaft, abutting against the first rotating shaft 42. The locking member is mounted on the base 41 and engages with the third gear 471. In this embodiment, the third gear 471 rotates with the first rotating shaft 42 to the corresponding position, and the locking member engages with the tooth groove of the third gear 471 to achieve position locking and prevent accidental opening of the switch. If an opening operation is performed, the handle 46 is rotated in the opposite direction, and the locking member disengages from the tooth groove of the third gear 471, releasing the lock. Specifically, the locking structure is located in the housing 48.

[0035] In some embodiments, please refer to Figure 6 The engaging component includes a mounting shaft 472, a contact block 473, and a shaped spring 474. The mounting shaft 472 is mounted on the base 41. The contact block 473 is slidably mounted on the mounting shaft 472 and has a engaging end adapted to the tooth groove of the third gear 471. The shaped spring 474 is mounted on the mounting shaft 472 and abuts against the contact block 473, used to drive the contact block 473 to move. In this embodiment, the third gear 471 rotates with the first rotating shaft 42 to the corresponding position, and the contact block 473 moves axially along the mounting shaft 472 under the elastic force of the shaped spring 474, engaging the tooth groove of the third gear 471 to achieve position locking and prevent the switch from accidentally opening. If an opening operation is performed, the handle 46 is rotated in the opposite direction, and the contact block 473 overcomes the elastic force of the shaped spring 474 and disengages from the tooth groove of the third gear 471 along the mounting shaft 472, releasing the lock.

[0036] Example 2: In some embodiments, please refer to Figure 5 The drive unit 40 includes a base 41, a first rotating shaft 42, and a second rotating shaft 44. The first rotating shaft 42 is rotatably mounted on the base 41 and has a first gear 43. The second rotating shaft 44 is rotatably mounted on a mounting frame 31 and connected to a reel 32. The second rotating shaft 44 has a second gear 45, which meshes with the first gear 43 for transmission. In this embodiment, the first rotating shaft 42 is rotatably mounted on the base 41 and has a first gear 43. The second rotating shaft 44 is rotatably mounted on the mounting frame 31 and connected to the reel 32. The second rotating shaft 44 has a second gear 45, which meshes with the first gear 43 for transmission. Thus, the rotation of the first rotating shaft 42 drives the rotation of the first gear 43, and the meshing of the second gear 45 with the first gear 43 further enables the second gear 45 to drive the rotation of the second rotating shaft 44, which in turn drives the rotation of the reel 32, thereby achieving the winding and unwinding of the pull rope 33.

[0037] In some embodiments, please refer to Figure 5One end of the first rotating shaft 42 is provided with a handle 46, so that the operator can rotate the first rotating shaft 42 by using the handle 46.

[0038] In some embodiments, please refer to Figure 5 and Figure 6 The drive unit 40 also includes a locking structure 47, which includes a third rotating shaft and a locking member. The third rotating shaft is rotatably mounted on the base 41, and a third gear 471 is mounted on the third rotating shaft, abutting against the first rotating shaft 42. The locking member is mounted on the base 41 and engages with the third gear 471. In this embodiment, the third gear 471 rotates with the first rotating shaft 42 to the corresponding position, and the locking member engages with the tooth groove of the third gear 471 to achieve position locking and prevent accidental opening of the switch. If an opening operation is performed, the handle 46 is rotated in the opposite direction, and the locking member disengages from the tooth groove of the third gear 471, releasing the lock. Specifically, the locking structure is located in the housing 48.

[0039] In some embodiments, please refer to Figure 6 The engaging component includes a mounting shaft 472, a contact block 473, and a shaped spring 474. The mounting shaft 472 is mounted on the base 41. The contact block 473 is slidably mounted on the mounting shaft 472 and has a engaging end adapted to the tooth groove of the third gear 471. The shaped spring 474 is mounted on the mounting shaft 472 and abuts against the contact block 473, used to drive the contact block 473 to move. In this embodiment, the third gear 471 rotates with the first rotating shaft 42 to the corresponding position, and the contact block 473 moves axially along the mounting shaft 472 under the elastic force of the shaped spring 474, engaging the tooth groove of the third gear 471 to achieve position locking and prevent the switch from accidentally opening. If an opening operation is performed, the handle 46 is rotated in the opposite direction, and the contact block 473 overcomes the elastic force of the shaped spring 474 and disengages from the tooth groove of the third gear 471 along the mounting shaft 472, releasing the lock.

[0040] A specific embodiment of the present invention is as follows: When the isolating switch needs to be operated, the operator applies external force by rotating the handle 46. The handle 46 is mounted on the first rotating shaft 42. The handle 46 drives the first rotating shaft 42 and the first gear 43 to rotate. The first gear 43 meshes with and drives the second gear 45 to rotate, thereby causing the second rotating shaft 44 and the reel 32 to rotate synchronously. When performing the closing operation, the reel 32 will wind up the pull rope 33. The locking block 36 at the upper end of the pull rope 33 drives the first contact rod 222, the second contact rod 223, and the contact piece 221 to move. At this time, the adapter plate 213 rotates around the rotating shaft 212. The connecting rod 23 and the contact piece 221 rotate with the adapter plate 213. The contact piece 221 gradually approaches and contacts the external conductive component. The first spring 225 is compressed. A preload is applied through the first contact rod 222 and the second contact rod 223, so that the contact piece 221 is tightly attached to the external component, completing the closing and conducting operation. Simultaneously, the reset spring 35 is stretched to store energy, and the second spring 215 on the support rod 214 is compressed due to the rotation of the adapter plate 213, providing buffering and auxiliary reset force. After the circuit breaker is closed, the locking structure 47 is activated, and the third gear 471 rotates to the corresponding position with the first rotating shaft 42. Under the elastic force of the irregular spring 474, the contact block 473 moves axially along the mounting shaft 472 and engages in the tooth groove of the third gear 471, achieving position locking and preventing accidental opening of the switch. If an opening operation is performed, the handle 46 is rotated in the opposite direction, and the contact block 473 overcomes the elastic force of the irregular spring 474 and disengages from the tooth groove of the third gear 471 along the mounting shaft 472, releasing the lock. At this time, the reset spring 35 releases energy, and pulls the locking block 36, the first contact rod 222, and the second contact rod 223 in the opposite direction through the pull rope 33, causing the rotating shaft 212 to rotate in the opposite direction. The contact piece 221 disengages from the external conductive component. At the same time, the second spring 215 assists the adapter plate 213 to reset, and the reel 32 releases the pull rope 33, finally returning to the open state and completing the power-off isolation.

[0041] 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, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A 35kV isolating switch opening and closing device, characterized in that, include: A substrate, on which two spaced-apart composite post insulators are provided; The contact unit includes a first connecting part and a second connecting part, wherein the first connecting part is connected to one of the composite post insulators, and the second connecting part is connected to the other composite post insulator; The transmission component is arranged vertically, and its top end is connected to the second connecting part; A drive unit is connected to the bottom end of the transmission assembly and is used to drive the transmission assembly to move in a vertical direction, and the transmission assembly drives the second connecting part to move. The drive unit drives the transmission assembly to move, and the transmission assembly drives the second connecting part to contact or disconnect with the corresponding composite post insulator to realize the closing or opening of the circuit.

2. The 35kV isolating switch opening and closing device as described in claim 1, characterized in that, The contact unit also includes a connecting rod, one end of which is connected to the first connecting part and the other end of which is connected to the second connecting part.

3. The 35kV isolating switch opening and closing device as described in claim 2, characterized in that, The first connecting part includes: A connecting seat is provided on the composite post insulator; A rotating shaft is rotatably connected to the connecting seat, and the axis of rotation of the rotating shaft is set in the horizontal direction; Two adapter plates are provided, which are spaced apart along the length of the rotation shaft. One end of each adapter plate is connected to the rotation shaft, and the other end is connected to the connecting rod.

4. The 35kV isolating switch opening and closing device as described in claim 3, characterized in that, The second connecting part includes: Two contact pieces are provided, which are spaced apart along the length of the rotation axis, and both contact pieces are connected to the connecting rod. The first contact rod is provided with at least two, each first contact rod is spaced apart, one end of each first contact rod is connected to one of the contact pieces, and the other end extends along the length direction of the rotation axis; The second contact rod is provided in at least two. One end of each second contact rod is connected to another contact piece, and the other end extends along the length direction of the rotation axis. Each second contact rod is provided in a one-to-one correspondence with each first contact rod, and a gap is provided between each second contact rod and the corresponding first contact rod.

5. A 35kV isolating switch opening and closing device as described in claim 4, characterized in that, The end of each second contact rod away from the first contact rod extends out of the contact piece; the second connecting portion further includes: The first limiting member is disposed at the extended end of the second contact rod; The first spring is provided in at least two, and each first spring is arranged in a one-to-one correspondence with each second contact rod. Each first spring is sleeved on the protruding part of the corresponding second contact rod, and one end of the first spring abuts against the contact piece and the other end abuts against the first limiting member.

6. A 35kV isolating switch opening and closing device as described in claim 4, characterized in that, The transmission assembly includes: Mounting rack; The reel is rotatably mounted on the mounting bracket; A pull rope is wound around the spool, the pull rope having a free end, and a snap-fit ​​block is provided at the free end; A sleeve rod is fitted around the outer circumference of the pull rope; A return spring is located in the sleeve rod, with its top end connected to the sleeve rod and its bottom end connected to the pull rope. The pull rope moves downward and is wound up by the reel. The pull rope drives the locking block to move downward to connect with the first contact rod and the second contact rod.

7. A 35kV isolating switch opening and closing device as described in claim 6, characterized in that, The driving unit includes: Base; A first rotating shaft is rotatably mounted on the base, and a first gear is provided on the first rotating shaft; The second rotating shaft is rotatably mounted on the mounting bracket and connected to the reel. The second rotating shaft is provided with a second gear, which meshes with the first gear for transmission.

8. A 35kV isolating switch opening and closing device as described in claim 7, characterized in that, A handle is provided at one end of the first rotating shaft.

9. A 35kV isolating switch opening and closing device as described in claim 7, characterized in that, The drive unit further includes a locking structure, the locking structure comprising: A third rotating shaft is rotatably mounted on the base, and a third gear is provided on the third rotating shaft, which abuts against the first rotating shaft; A locking component is disposed on the base and engages with the third gear.

10. A 35kV isolating switch opening and closing device as described in claim 9, characterized in that, The engaging component includes: The mounting shaft is mounted on the base. The contact block is slidably disposed on the mounting shaft and has a snap-fit ​​end adapted to the tooth groove of the third gear; An irregularly shaped spring is disposed on the mounting shaft and abuts against the contact block, for driving the contact block to move.

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