Improved elastic operation column switch device

Abstract

The utility model discloses an improved spring operation pole-mounted switch device, which comprises a shell, a circuit breaker main body, an insulator and an isolation insulation pull rod, and is characterized in that the circuit breaker main body is fixedly arranged in the shell, the circuit breaker main body is rotatably connected with a disconnecting link through a hinge piece, and the disconnecting link is fixedly provided with a disconnecting link driving connecting rod; one end of the disconnecting link is fixedly connected with a tulip contact protective cover, the side portion of the tulip contact fixing ring is fixedly connected with an upper fixing frame, the upper end of the insulator is provided with a static contact, the side portion of the upper end of the static contact is fixedly connected with a lower fixing frame, and the tulip contact protective cover is fixedly provided with a tulip contact blade through the upper fixing frame. The lower fixing frame is clamped and fixed with the tulip contact blade; and the side part of the tulip contact blade is fixedly sleeved with a contact blade fixing spring. The contact structure is more flexible and convenient to adjust, the current-carrying capability of the contact structure is greatly improved, the full-sealing protection of the contact part is realized, the aging resistance of the outdoor environment is improved, and the reliability of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage switch equipment, in particular to an improved spring-operated column mounted switch device. Background Art

[0002] The circuit breaker is a typical high-voltage protection switch for high-voltage distribution lines. The reliability, consistency, and long-term weather resistance of the equipment's mechanical operation determine whether the equipment can operate reliably for a long time, which directly affects the reliability of the line power supply.

[0003] The existing pillar-type high-voltage switch adopts a complex slide rail guide transmission structure to realize the movement of the switch contact. The clearance required for the movement of the slide rail is larger than that of the connecting rod transmission, and its wear resistance is lower than that of the connecting rod transmission. At the same time, the isolation knife switch structure also adopts a contact structure composed of double-piece knife switches. The contact is exposed to the air for a long time. The problems it faces are mainly reflected in the following aspects:

[0004] In the guide rail transmission structure, the transmission rod, connecting rod, and sliding guide groove are coordinated with a very strict hierarchical structure. The assembly and debugging of each link must be carried out after the previous level assembly is completed. It is impossible to assemble the two modules of the main transmission mechanism box and the primary circuit separately, which seriously affects the pre-assembly of most of the production process and affects production efficiency.

[0005] Conventional guide rail transmission structure uses pins, rollers, and connecting rods to realize the movement of switch contacts through rolling friction with the surface of the guide rail. Considering the flexibility of transmission, the reserved gap required for sliding transmission is 2 to 3 times that of connecting rod and pin rotation transmission. For the guide rail surface that bears 2kN upper pressure, there are high requirements for the roughness and hardness of the guide rail surface, and there is a strict requirement for lubrication. Therefore, the processing and assembly process of parts has a high requirement for product reliability. Substandard process can easily cause product transmission problems, thereby affecting the reliable operation of the product.

[0006] The isolating switch configured in the traditional switch adopts an exposed knife switch structure. The length of the knife switch is not less than 250mm. Both ends of the knife switch use raised circular surfaces for electrical contact, and both ends use a surface-to-surface matching structure. This type of structure makes it difficult to achieve effective contact between the contacts at both ends, resulting in accidents such as contact burning during the short-term dynamic thermal stability test of the product. Utility Model Content

[0007] The utility model aims to provide an improved spring-operated column switch device, comprising a housing, a circuit breaker body, an insulator and an isolating insulating pull rod, wherein the circuit breaker body is fixedly installed in the housing, the circuit breaker body is rotatably connected to a knife switch through a hinge, a knife switch driving connecting rod is fixedly installed on the knife switch, one end of the knife switch is fixedly connected to a plum blossom contact shield, an O-ring is fixedly installed in the plum blossom contact shield, a plum blossom contact fixing ring is fixedly sleeved in the O-ring, an upper fixing frame is fixedly connected to the side of the plum blossom contact fixing ring, a static contact is installed at the upper end of the insulator, a lower fixing frame is fixedly connected to the side of the upper end of the static contact, a plum blossom contact sheet is fixedly installed on the plum blossom contact shield through the upper fixing frame, the lower fixing frame is clamped and fixed to the plum blossom contact sheet, and a contact sheet fixing spring is fixedly sleeved on the side of the plum blossom contact sheet;

[0008] A pull rod adjustment rod is hingedly connected to the side of one end of the knife switch driving connecting rod, and one end of the pull rod adjustment rod is fixedly connected to the isolation insulating pull rod;

[0009] A mounting frame is installed on the side of the shell, a driving shaft is rotatably mounted on the mounting frame, one end of the driving shaft is fixedly connected to a driving crank arm, and the isolation insulating pull rod is hinged to the driving crank arm.

[0010] In one embodiment of the utility model, a stationary contact fixing frame is fixedly mounted on the upper end of the insulator, the stationary contact is fixedly mounted on the stationary contact fixing frame, a plurality of limit pins are slidably inserted at the bottom of the stationary contact, and the limit pins are located between the stationary contact and the stationary contact fixing frame.

[0011] In an embodiment of the utility model, two limit pins are provided, and a retaining spring is sleeved on the bottom of one of the limit pins, and the other end of the retaining spring is fixedly connected to the static contact fixing frame.

[0012] In one embodiment of the utility model, a transmission mechanism is arranged in the shell, and the transmission mechanism includes a main transmission connecting rod, a first opening brake spring hanging plate, a second opening brake spring hanging plate, an isolation operating handle rotatably mounted on the mounting frame, and a driven connecting rod, the main transmission connecting rod is provided with a rotatable elastic operating mechanism link pin, the main transmission connecting rod is rotatably mounted in the shell, one end of the driven connecting rod is hinged to the main transmission connecting rod, a limit block is installed on the side of the main transmission connecting rod through a connecting pin, two limit blocks are provided, an adjusting bolt is threadedly mounted between the two limit blocks, the first opening brake spring hanging plate is hingedly mounted on the inner wall of the shell, the One end of the first opening spring hanging plate is fixedly connected with an opening spring, one end of the opening spring is fixedly connected with an opening spring adjustment hanging plate, the opening spring adjustment hanging plate is rotatably mounted on the second opening spring hanging plate, the second opening spring hanging plate is rotatably mounted in the shell through an isolation interlocking drive shaft, one end of the isolation interlocking drive shaft located outside the shell is fixedly connected with an interlocking drive crank arm, one end of the interlocking drive crank arm is fixedly connected with a locking rod, one end of the locking rod is rotatably mounted with a locking plate, the locking plate is snap-connected and fixed to the isolation operating handle, the spring operating mechanism is hingedly mounted in the shell, and the main transmission connecting rod is transmission-connected to the spring operating mechanism.

[0013] In an embodiment of the utility model, a buffer pad for buffering the adjusting bolt is bonded inside the shell.

[0014] In one embodiment of the utility model, a sealed pole insulating pull rod is fixedly installed in the circuit breaker body, a guide sleeve is slidably sleeved on the sealed pole insulating pull rod, an overtravel spring is fixedly installed in the guide sleeve, and the overtravel spring is sleeved on the sealed pole insulating pull rod, the sealed pole insulating pull rod sliding sleeve is provided with an overtravel pressure rod, one end of the overtravel pressure rod is fixedly connected with a long crank arm, the long crank arm is connected to the driven connecting rod through a pull rod connecting block, the upper end of the sealed pole insulating pull rod is installed with a sealed pole through a flexible part, and the upper end of the sealed pole is sleeved with an upper incoming line terminal.

[0015] In an embodiment of the utility model, a limit pin for limiting the position of the insulating pull rod of the sealed pole is provided on the over-travel pressure rod, and a locking nut is threadedly installed on one end of the long crank arm.

[0016] In one embodiment of the utility model, a manual separation and combination handle is rotatably installed on the side wall of the shell via a manual separation and combination operating shaft, and the manual separation and combination operating shaft is transmission connected to the spring operating mechanism. An energy storage operating handle is rotatably installed on the side wall of the shell via an energy storage operating shaft, and the energy storage operating shaft passes through one end of the shell and is transmission connected to the spring operating mechanism. An energy storage indicator is rotatably installed on the side wall of the shell via an energy storage indication shaft. A separation and combination indication shaft is rotatably installed on the side of the shell, and a separation and combination indicator is fixedly installed on one end of the separation and combination indication shaft, and the separation and combination indication shaft is fixedly connected to the second opening spring hanging plate.

[0017] In an embodiment of the utility model, a driving spring is fixedly connected to the mounting frame, one end of the driving spring is fixedly connected to the isolation operating handle, and a lower outlet terminal is fixedly installed on the side of the circuit breaker body.

[0018] In an embodiment of the utility model, a sealing plate is fixedly installed on the bottom of the shell, a sealing ring is fixedly bonded on the sealing plate, and the sealing ring is used to seal the gap between the sealing plate and the shell.

[0019] In summary, due to the adoption of the above technology, the beneficial effects of the utility model are:

[0020] In the utility model, one end of the plum blossom contact composed of an upper fixing frame, a lower fixing frame, a plum blossom contact piece and a contact piece fixing spring is clamped on the plum blossom contact fixing ring, and is limited by the inner circle of the plum blossom contact protective cover to prevent the plum blossom contact from escaping. The plum blossom contact fixing ring is connected to the knife switch through the end face, and the end face of the plum blossom contact protective cover is fully sealed with the knife switch through an O-ring. In the closed state, the plum blossom contact protective cover and the static contact protective cover are sealed and matched through the umbrella skirt arranged on the periphery to achieve the airtightness inside the plum blossom contact protective cover and the static contact protective cover; the static contact can rotate at a small angle around the limit pin between the static contact fixing frames to adapt to the eccentric movement during the closing process of the knife switch and reduce the rigid impact of the knife switch, and the angle is rotated through the space composed of the limit pin, the retaining spring and the limit pin; the plum blossom contact can adjust the number of plum blossom contact pieces according to the size of the current, which has a more flexible and convenient adjustment effect compared to the fixed knife switch;

[0021] The guide rail transmission structure is replaced by the transmission form of the main transmission connecting rod, driving crank arm and driven connecting rod structure, so that the switch avoids the traditional guide rail transmission structure. The adverse effect of sliding friction on transmission reliability is improved, and the mechanical life stability of the switch is improved. At the same time, since the transmission clearance of the main transmission connecting rod, driving crank arm and driven connecting rod is more precise than that of the guide rail transmission, the stability of key parameters such as the bounce of the switch is greatly improved.

[0022] By redesigning the over-travel pressure rod connection form and the over-travel adjustment form, the key parameters of the switch over-travel light can be adjusted without disassembling the switch and the mechanism, so that the switch mechanism box part can be modularly pre-assembled. At the same time, during the over-travel adjustment process, there is no need to disassemble the main components, which greatly simplifies the assembly process and improves the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic top view of the housing of the utility model;

[0024] Figure 2 It is a schematic bottom-view cross-sectional diagram of the housing of the utility model;

[0025] Figure 3 It is a schematic side cross-sectional view of the housing of the utility model;

[0026] Figure 4 It is a side cross-sectional schematic diagram of the mounting frame of the utility model;

[0027] Figure 5 It is a schematic side view of the shell of the utility model.

[0028] In the figure: 1. Shell; 2. Circuit breaker body; 3. Insulator; 4. Isolation and insulation rod; 5. Hinged piece; 6. Knife switch; 7. Knife switch driving connecting rod; 8. Plum blossom contact protective cover; 9. O-ring; 10. Plum blossom contact fixing ring; 11. Upper fixing frame; 12. Static contact; 13. Plum blossom contact piece; 14. Contact piece fixing spring; 15. Rod adjustment rod; 16. Mounting frame; 17. Driving shaft; 18. Driving crank arm; 19. Static contact fixing frame; 20. Limit pin; 21. Lower fixing frame; 22. Retaining spring; 23. Main transmission connecting rod; 24. First opening spring hanging plate; 25. Second opening spring hanging plate; 26. Isolation operating handle; 27. Driven connecting rod; 28. Limit block; 29. ​​Adjusting bolt; 30. Opening spring; 31. Opening Spring adjustment hanging plate; 32, interlocking rod; 33, locking plate; 34, spring operating mechanism; 35, sealed pole insulation pull rod; 36, guide sleeve; 37, overtravel spring; 38, overtravel pressure rod; 39, long crank arm; 40, pull rod connecting block; 41, sealed pole; 42, upper incoming terminal; 43, limit pin; 44, locking nut; 45, buffer pad; 46, manual separation and combination operating shaft; 47, manual separation and combination handle; 48, energy storage operating shaft; 49, energy storage operating handle; 50, energy storage indication shaft; 51, energy storage indicator; 52, separation and combination indication shaft; 53, separation and combination indicator; 54, driving spring; 55, lower outlet terminal; 56, sealing plate; 57, sealing ring; 61, spring operating mechanism link pin; 67, interlocking drive crank arm; 68, isolation interlocking drive shaft. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0030] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances of the specification.

[0032] Example 1

[0033] See also Figure 1-Figure 5The utility model provides an improved spring-operated column switch device, comprising a housing 1, a circuit breaker body 2, an insulator 3 and an isolating insulating pull rod 4, wherein the circuit breaker body 2 is fixedly installed in the housing 1, the circuit breaker body 2 is rotatably connected to a knife switch 6 through a hinge 5, a knife switch driving connecting rod 7 is fixedly installed on the knife switch 6, one end of the knife switch 6 is fixedly connected to a plum blossom contact protective cover 8, an O-ring 9 is fixedly installed in the plum blossom contact protective cover 8, and the O-ring 9 is fixedly installed in the O-ring 9. A plum blossom contact fixing ring 10 is fixedly sleeved, and an upper fixing frame 11 is fixedly connected to the side of the plum blossom contact fixing ring 10. A static contact 12 is installed on the upper end of the insulator 3, and a lower fixing frame 21 is fixedly connected to the upper end side of the static contact 12. The plum blossom contact shield 8 is fixedly installed with a plum blossom contact piece 13 through the upper fixing frame 11. The lower fixing frame 21 is fixedly connected with the plum blossom contact piece 13, and a contact piece fixing spring 14 is fixedly sleeved on the side of the plum blossom contact piece 13;

[0034] A pull rod adjustment rod 15 is hingedly connected to one end of the knife switch driving connecting rod 7, and one end of the pull rod adjustment rod 15 is fixedly connected to the isolation insulating pull rod 4;

[0035] A mounting frame 16 is installed on the side of the housing 1, a driving shaft 17 is rotatably mounted on the mounting frame 16, one end of the driving shaft 17 is fixedly connected to a driving crank arm 18, and the isolation insulating pull rod 4 is hinged to the driving crank arm 18;

[0036] A static contact fixing frame 19 is fixedly mounted on the upper end of the insulator 3, and the static contact 12 is fixedly mounted on the static contact fixing frame 19. A plurality of limit pins 20 are slidably inserted at the bottom of the static contact 12, and the limit pins 20 are located between the static contact 12 and the static contact fixing frame 19. Two limit pins 20 are provided, and a retaining spring 22 is sleeved on the bottom of one of the limit pins 20, and the other end of the retaining spring 22 is fixedly connected to the static contact fixing frame 19.

[0037] It should be noted that a wiring port 59 for connecting to an external circuit is provided on the side of the housing 1. The wiring port 59 is used to connect to a control and signal circuit for the circuit breaker to receive a control signal.

[0038] A stationary contact protection cover 58 for protecting the stationary contact 12 is fixedly sleeved on the upper end side of the isolating insulating pull rod 4 .

[0039] By adopting the above scheme, one end of the plum blossom contact composed of the upper fixing frame 11, the lower fixing frame 21, the plum blossom contact sheet 13 and the contact sheet fixing spring 14 is clamped on the plum blossom contact fixing ring 10, and is limited by the inner circle of the plum blossom contact protective cover 8 to prevent the plum blossom contact from escaping. The plum blossom contact fixing ring 10 is connected to the knife switch 6 through the end face, and the end face of the plum blossom contact protective cover 8 is fully sealed with the knife switch 6 through the O-ring 9. In the closed state, the plum blossom contact protective cover 8 and the static contact protective cover 58 are sealed and matched through the umbrella skirt arranged on the periphery to achieve the sealing inside the plum blossom contact protective cover 8 and the static contact protective cover 58; The static contact 12 can rotate at a small angle around the limit pin 20 between the static contact fixing frame 19 to adapt to the eccentric movement of the knife switch 6 during the closing process and reduce the rigid impact of the knife switch 6. The angle is rotated through the space formed by the limit pin 20, the retaining spring 22, and the limit pin; the number of plum blossom contact pieces 13 can be adjusted according to the current by the plum blossom contact. Compared with the fixed knife switch, it has a more flexible and convenient adjustment effect, greatly improving the current-carrying capacity of the contact structure, and at the same time realizing full sealing protection of the contact part, improving the aging resistance of the outdoor environment, and improving the reliability of the product.

[0040] In this embodiment, a transmission mechanism is arranged in the housing 1, and the transmission mechanism includes a main transmission connecting rod 23, a first opening brake spring hanging plate 24, a second opening brake spring hanging plate 25, an isolation operating handle 26 rotatably mounted on the mounting frame 16, and a driven connecting rod 27, the main transmission connecting rod 23 is provided with a rotatable elastic operating mechanism link pin 61, the main transmission connecting rod 23 is rotatably mounted in the housing 1, one end of the driven connecting rod 27 is hinged to the main transmission connecting rod 23, a limit block 28 is installed on the side of the main transmission connecting rod 23 through a connecting pin, two limit blocks 28 are provided, and an adjusting bolt 29 is threadedly installed between the two limit blocks 28, the first opening brake spring hanging plate 24 is hingedly mounted on the inner wall of the housing 1, and the first opening brake spring hanging plate 25 is hingedly mounted on the inner wall of the housing 1. One end of the plate 24 is fixedly connected to a switch-off spring 30, one end of the switch-off spring 30 is fixedly connected to a switch-off spring adjustment hanging plate 31, the switch-off spring adjustment hanging plate 31 is rotatably mounted on the second switch-off spring hanging plate 25, the second switch-off spring hanging plate 25 is rotatably mounted in the housing 1 through an isolation interlocking drive shaft 68, one end of the isolation interlocking drive shaft 68 located outside the housing 1 is fixedly connected to an interlocking drive crank arm 67, one end of the interlocking drive crank arm 67 is fixedly connected to a locking rod 32, one end of the locking rod 32 is rotatably mounted to a locking plate 33, the locking plate 33 is snap-fitted and fixed to the isolation operating handle 26, the spring operating mechanism 34 is hingedly mounted in the housing 1, and the main transmission connecting rod 23 is transmission-connected to the spring operating mechanism 34;

[0041] The overtravel pressure rod 38 is provided with a limit pin 43 for limiting the position of the sealed pole insulation pull rod, and one end of the long crank arm 39 is threadedly mounted with a locking nut 44;

[0042] A manual separation and connection handle 47 is rotatably mounted on the side wall of the housing 1 via a manual separation and connection operating shaft 46, and the manual separation and connection operating shaft 46 is transmission-connected to the spring operating mechanism 34. An energy storage operating handle 49 is rotatably mounted on the side wall of the housing 1 via an energy storage operating shaft 48, and the energy storage operating shaft 48 passes through one end of the housing and is transmission-connected to the spring operating mechanism 34. An energy storage indicator 51 is rotatably mounted on the side wall of the housing 1 via an energy storage indicating shaft 50, and a separation and connection indicating shaft 52 is rotatably mounted on the side of the housing 1, and a separation and connection indicator 53 is fixedly mounted on one end of the separation and connection indicating shaft 52, and the separation and connection indicating shaft 52 is fixedly connected to the second opening spring hanging plate 25;

[0043] A driving spring 54 is fixedly connected to the mounting frame 16, one end of the driving spring 54 is fixedly connected to the isolation operating handle 26, and a lower outlet terminal 55 is fixedly installed on the side of the circuit breaker body 2;

[0044] A sealed pole insulating pull rod 35 is fixedly installed in the circuit breaker body 2, and a guide sleeve 36 is slidably sleeved on the sealed pole insulating pull rod 35. An overtravel spring 37 is fixedly installed in the guide sleeve 36, and the overtravel spring 37 is sleeved on the sealed pole insulating pull rod 35. The sealed pole insulating pull rod 35 is slidably sleeved with an overtravel pressure rod 38, and one end of the overtravel pressure rod 38 is fixedly connected to a long crank arm 39, and the long crank arm 39 is connected to the driven connecting rod 27 through a pull rod connecting block 40. The upper end of the sealed pole insulating pull rod 35 is installed with a sealed pole 41 through a flexible member, and the upper end of the sealed pole 41 is sleeved with an upper incoming line terminal 42.

[0045] It should be noted that the control cable of the connection port 59 is connected to the external control unit, and the control cable includes an energy storage circuit, an opening circuit, a closing circuit, a telemetry circuit and a telesignaling circuit.

[0046] With the above solution, the external control unit detects that the switch is in a non-energy storage state, automatically turns on the energy storage motor in the spring operating mechanism 34, pulls the closing spring of the spring operating mechanism 34, and after energy storage is completed, the energy storage circuit is disconnected by the auxiliary switch 66 in the spring operating mechanism 34. After energy storage is completed, its state is indicated on the energy storage indicator 60 through the energy storage indicator 51;

[0047] Closing operation: The external control unit sends a closing command, which is transmitted to the wiring port 59 through the control cable. The control line transmits the signal to the closing execution coil in the spring operating mechanism 34, pushing the energy storage lock to release the energy, pushing the spring operating mechanism link pin 61 to rotate, driving the main transmission connecting rod 23 to make horizontal linear motion, and then driving the long crank arm 39 and the driven connecting rod 27 to move relative to each other, so that the pull rod connecting block 40 connected thereto moves in the closing direction, pushing the overtravel pressure rod 38, the guide sleeve 36, the overtravel spring 37, and the sealed pole insulating pull rod 35 of the main circuit to achieve closing and compression energy storage of the overtravel spring 37. At the same time, the opening spring adjustment hanging plate 31 and the opening spring 30 are pulled to store energy in the opening spring 30;

[0048] Opening operation: The external control unit sends out an opening command, which is transmitted to the wiring port 59 through the control cable. The control line transmits the signal to the opening execution coil in the spring operating mechanism 34, pushing the closing holding lock to release. Driven by the opening spring 30 and the energy of the overtravel spring 37, the main transmission connecting rod 23 is driven to move in the opposite direction, and the long crank arm 39 and the driven connecting rod 27 are driven to move relative to each other in turn, so that the pull rod connecting block 40 connected to the driven connecting rod 27 moves in the opening direction, thereby realizing the opening of the switch.

[0049] Manual energy storage operation: repeatedly pull the energy storage operation handle 49, drive the energy storage operation shaft 48 in turn, pull the energy storage spring in the spring operating mechanism 34, and realize the energy storage of the switch. After the energy storage is completed, its state is indicated by the energy storage indicator 51, the energy storage indication shaft 50, and the energy storage indication sign 60, realizing the manual energy storage operation of the switch;

[0050] Manual closing operation: manually pull the manual opening and closing handle 47 to move in the closing direction, drive the manual opening and closing operating shaft 46 to rotate, drive the energy storage lock in the spring operating mechanism 34 to release energy, and then complete the remaining actions in the above-mentioned electric closing process, and complete the manual closing of the switch;

[0051] Manual opening operation: manually pull the manual opening and closing handle 47 to move in the opening direction, drive the manual opening and closing operating shaft 46 to rotate, drive the closing holding lock in the spring operating mechanism 34 to release, and then complete the remaining actions in the above-mentioned electric opening process, and complete the manual opening of the switch;

[0052] Operation and locking of the isolating switch: When the circuit breaker is in the open state, the second opening spring hanging plate drives the driving shaft 17, the driving crank arm 18 and the interlocking rod 32 to move in sequence, the interlocking rod 32 retracts, and the locking plate 33 can be rotated. At this time, the interlocking is released, otherwise the operation cannot be performed; under the condition that the interlocking requirements are met, pull the isolating operating handle 26 toward the opening operating surface, driving the driving shaft 17, the driving crank arm 18, the isolating insulating pull rod 4 and the knife switch 6 to move, and push the knife switch 6 parts to separate. At the same time, with the help and maintenance of the driving spring 54, the isolating switch can be stably in the open state, otherwise the closing operation is performed.

[0053] Through the above arrangement, the guide rail transmission structure is replaced by the transmission form of the main transmission connecting rod 23, the driving crank arm and the driven connecting rod 27, so that the switch avoids the traditional guide rail transmission structure, and the adverse effect of sliding friction on the transmission reliability is improved, and the mechanical life stability of the switch is improved. At the same time, since the transmission clearance of the main transmission connecting rod 23, the driving crank arm and the driven connecting rod 27 is more precise than that of the guide rail transmission, the stability of key parameters such as the bounce of the switch is greatly improved;

[0054] By redesigning the connection form of the over-travel pressure rod 38 and the over-travel adjustment form, the key parameters of the switch over-travel lamp can be adjusted without disassembling the switch and the mechanism, so that the switch mechanism box part can be modularly pre-assembled. At the same time, during the over-travel adjustment process, there is no need to disassemble the main components, which greatly simplifies the assembly process and improves the assembly efficiency.

[0055] In this embodiment, a buffer pad 45 for buffering the adjusting bolt 29 is bonded inside the housing 1 .

[0056] With the above solution, by using the buffer pad 45 , after the adjusting bolt 29 is rotated, the main transmission connecting rod 23 collides with the partition plate inside the housing 1 when rotating, causing damage to the partition plate inside the housing 1 .

[0057] In this embodiment, a sealing plate 56 is fixedly mounted on the bottom of the housing 1 , and a sealing ring 57 is fixedly bonded to the sealing plate 56 . The sealing ring 57 is used to seal the gap between the sealing plate 56 and the housing 1 .

[0058] By adopting the above solution, the use of the sealing ring 57 can effectively prevent dust and rainwater from entering the housing 1.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. An improved spring-operated column switch device, comprising a housing (1), a circuit breaker body (2), an insulator (3) and an isolating insulating pull rod (4), wherein the circuit breaker body (2) is fixedly mounted in the housing (1), and characterized in that: The circuit breaker body (2) is rotatably connected to a knife switch (6) via a hinge (5); a knife switch driving connecting rod (7) is fixedly mounted on the knife switch (6); one end of the knife switch (6) is fixedly connected to a plum blossom contact protection cover (8); an O-ring (9) is fixedly mounted inside the plum blossom contact protection cover (8); a plum blossom contact fixing ring (10) is fixedly sleeved inside the O-ring (9); and the side of the plum blossom contact fixing ring (10) is fixedly connected to an upper fixed A fixed frame (11), a static contact (12) is mounted on the upper end of the insulator (3), a lower fixed frame (21) is fixedly connected to the side of the upper end of the static contact (12), a plum blossom contact piece (13) is fixedly mounted on the plum blossom contact protection cover (8) via the upper fixed frame (11), the lower fixed frame (21) is fixedly engaged with the plum blossom contact piece (13), and a contact piece fixing spring (14) is fixedly sleeved on the side of the plum blossom contact piece (13); A pull rod adjustment rod (15) is hingedly connected to the side of one end of the knife switch driving connecting rod (7), and one end of the pull rod adjustment rod (15) is fixedly connected to the isolation insulating pull rod (4); A mounting frame (16) is mounted on the side of the housing (1), a driving shaft (17) is rotatably mounted on the mounting frame (16), one end of the driving shaft (17) is fixedly connected to a driving crank arm (18), and the isolating insulating pull rod (4) is hinged to the driving crank arm (18).

2. The improved spring-operated column switch device according to claim 1, characterized in that: A stationary contact fixing frame (19) is fixedly mounted on the upper end of the insulator (3), the stationary contact (12) is fixedly mounted on the stationary contact fixing frame (19), a plurality of limit pins (20) are slidably inserted at the bottom of the stationary contact (12), and the limit pins (20) are located between the stationary contact (12) and the stationary contact fixing frame (19).

3. The improved spring-operated column switch device according to claim 2 is characterized in that: Two limit pins (20) are provided, and a retaining spring (22) is sleeved on the bottom of one of the limit pins (20), and the other end of the retaining spring (22) is fixedly connected to the stationary contact fixing frame (19).

4. The improved spring-operated column switch device according to claim 3 is characterized in that: A transmission mechanism is arranged in the housing (1), the transmission mechanism comprising a main transmission connecting rod (23), a first opening brake spring hanging plate (24), a second opening brake spring hanging plate (25), an isolating operating handle (26) rotatably mounted on the mounting frame (16), and a driven connecting rod (27); a rotatable spring operating mechanism linking pin (61) is mounted on the main transmission connecting rod (23); the main transmission connecting rod (23) is rotatably mounted in the housing (1); one end of the driven connecting rod (27) is hingedly connected to the main transmission connecting rod (23); a limit block (28) is mounted on the side of the main transmission connecting rod (23) via a connecting pin; two limit blocks (28) are arranged; an adjusting bolt (29) is threadedly mounted between the two limit blocks (28); the first opening brake spring hanging plate (24) is hingedly mounted on the inner wall of the housing (1); the first opening brake spring hanging plate (24) is hingedly connected to ... ) is fixedly connected to an opening spring (30), one end of the opening spring (30) is fixedly connected to an opening spring adjustment hanging plate (31), the opening spring adjustment hanging plate (31) is rotatably mounted on the second opening spring hanging plate (25), the second opening spring hanging plate (25) is rotatably mounted in the housing (1) via an isolation interlocking drive shaft (68), one end of the isolation interlocking drive shaft (68) located outside the housing (1) is fixedly connected to an interlocking drive crank arm (67), one end of the interlocking drive crank arm (67) is fixedly connected to a locking rod (32), one end of the locking rod (32) is rotatably mounted to a locking plate (33), the locking plate (33) is snap-fitted to the isolation operating handle (26), a spring operating mechanism (34) is hingedly mounted in the housing (1), and the main transmission connecting rod (23) is transmission-connected to the spring operating mechanism (34).

5. The improved spring-operated column switch device according to claim 4 is characterized in that: A buffer pad (45) for buffering the adjusting bolt (29) is bonded inside the housing (1).

6. The improved spring-operated column switch device according to claim 5, characterized in that: A sealed pole insulating pull rod (35) is fixedly installed in the circuit breaker body (2), a guide sleeve (36) is slidably sleeved on the sealed pole insulating pull rod (35), an overtravel spring (37) is fixedly installed in the guide sleeve (36), and the overtravel spring (37) is sleeved on the sealed pole insulating pull rod (35), an overtravel pressure rod (38) is slidably sleeved on the sealed pole insulating pull rod (35), one end of the overtravel pressure rod (38) is fixedly connected to a long crank arm (39), and the long crank arm (39) is connected to the driven connecting rod (27) through a pull rod connecting block (40), the upper end of the sealed pole insulating pull rod (35) is mounted with a sealed pole (41) through a flexible member, and the upper end of the sealed pole (41) is sleeved with an upper incoming line terminal (42).

7. The improved spring-operated column switch device according to claim 6, characterized in that: The overtravel pressure rod (38) is provided with a limit pin (43) for limiting the position of the sealed pole insulating pull rod, and a locking nut (44) is threadedly mounted on one end of the long crank arm (39).

8. The improved spring-operated column switch device according to claim 7 is characterized in that: A manual on-off handle (47) is rotatably mounted on the side wall of the housing (1) via a manual on-off operating shaft (46), and the manual on-off operating shaft (46) is transmission-connected to the spring operating mechanism (34). An energy storage operating handle (49) is rotatably mounted on the side wall of the housing (1) via an energy storage operating shaft (48), and the energy storage operating shaft (48) passes through one end of the housing and is transmission-connected to the spring operating mechanism (34). An energy storage indicator (51) is rotatably mounted on the side wall of the housing (1) via an energy storage indicating shaft (50). A on-off indicating shaft (52) is rotatably mounted on the side of the housing (1), and an on-off indicator (53) is fixedly mounted on one end of the on-off indicating shaft (52), and the on-off indicating shaft (52) is fixedly connected to the second opening spring hanging plate (25).

9. The improved spring-operated column switch device according to claim 8, characterized in that: A driving spring (54) is fixedly connected to the mounting frame (16), one end of the driving spring (54) is fixedly connected to the isolation operating handle (26), and a lower outlet terminal (55) is fixedly mounted on the side of the circuit breaker body (2).

10. An improved spring-operated column switch device according to claim 9, characterized in that: A sealing plate (56) is fixedly mounted on the bottom of the shell (1), and a sealing ring (57) is fixedly bonded to the sealing plate (56), wherein the sealing ring (57) is used to seal the gap between the sealing plate (56) and the shell (1).

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