Operating mechanism for direct-acting isolating switch of high-voltage switch cabinet

Abstract

The utility model relates to the technical field of high-voltage switch equipment, and provides an operating mechanism for a direct-acting isolating switch of a high-voltage switch cabinet, which comprises a rack, an electric driving structure, a manual driving structure, an electric-manual switching selection structure and a switching-on and switching-off signal acquisition structure, wherein the manual driving structure comprises a grounding operation shaft and an isolation operation shaft which are in transmission fit with each other through a gear set, the grounding operation shaft serves as an operation output shaft and is in transmission fit with the electric driving structure, and the opening and closing signal acquisition structure comprises two position confirmation switches, a positioning pressing wheel and a positioning sleeve. The two position confirmation switches are arranged in the circumferential direction of the second linkage shaft, the second linkage shaft is in transmission fit with the isolation operation shaft, the positioning pressing wheel and the positioning sleeve are both installed on the second linkage shaft, and the two position confirmation switches are connected with the positioning pressing wheel and the positioning sleeve respectively so as to output signals outwards. The utility model overcomes the defects of the prior art, and has the advantages of small volume, simple structure, safety and reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage switch equipment, in particular to an operating mechanism for a direct-acting isolating switch in a high-voltage switch cabinet. Background Art

[0002] The operating mechanism of the existing high-voltage switch cabinet disconnector uses the same operating shaft to achieve isolation and grounding separation and closing operations through the transmission of gears or sprockets and screws; when operating with one operating shaft, the direction of operation determines whether the disconnector in the switch cabinet is grounded or isolated; if the wrong operating direction occurs, it may cause a major electrical accident.

[0003] In addition, the existing high-voltage switch remote electrical position confirmation uses a single signal, and once a single failure occurs, the position status of the disconnector cannot be confirmed.

[0004] To this end, we propose an operating mechanism for a direct-acting disconnector in a high-voltage switchgear. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The utility model provides an operating mechanism for a direct-acting isolating switch of a high-voltage switch cabinet, which overcomes the shortcomings of the prior art and has the advantages of small size, simple structure, safety and reliability.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] An operating mechanism for a direct-acting isolating switch in a high-voltage switch cabinet, characterized by comprising:

[0010] The rack has a grounding operation hole, an isolation operation hole, an electric manual switching selection hole and a manual unlocking hole respectively arranged on the left and right sides of the grounding operation hole and the isolation operation hole;

[0011] The electric manual switching selection structure comprises a wrench, a manual operation selection baffle, an isolation operation switch and a grounding operation switch, wherein one end of the wrench is exposed on the panel, and the other end thereof penetrates through the electric manual switching selection opening and is fixedly connected to the left end of the manual operation selection baffle, the manual operation selection baffle is arranged parallel to the mounting plate and the right end thereof is rotatably supported on the mounting plate through a first linkage shaft, and the isolation operation switch and the grounding operation switch are installed on the back of the panel and are arranged on both sides of the rotation direction of the manual operation selection baffle;

[0012] Electric drive structure;

[0013] The manual drive structure comprises a grounding operation shaft and an isolation operation shaft which are arranged in parallel with the clutch output shaft and are rotatably supported on the frame, the grounding operation shaft and the isolation operation shaft are arranged opposite to the grounding operation hole and the isolation operation hole respectively, the grounding operation shaft and the isolation operation shaft are respectively mounted with a first gear and a second gear, the first gear and the second gear are meshed with each other, and the rear end of the grounding operation shaft passes through the frame to serve as an operation output shaft;

[0014] The opening and closing signal acquisition structure includes a first position confirmation switch, a second position confirmation switch, a positioning pressure wheel and a positioning sleeve. The first position confirmation switch and the second position confirmation switch are installed on a frame and are evenly arranged around the second linkage shaft. The second linkage shaft is rotatably supported on the frame and is matched with the isolation operation shaft through a second reduction gear set. The first position confirmation switch and the second position confirmation switch are at least provided in one group. The positioning pressure wheel and the positioning sleeve are both installed on the second linkage shaft and rotate synchronously with the second linkage shaft. Each of the first position confirmation switches is engaged with the positioning pressure wheel, and each of the second position confirmation switches is combined with the positioning sleeve, so as to output signals to the outside.

[0015] Furthermore, the operating mechanism also includes a manually driven unlocking structure, including an unlocking handle, a moving plate, a manual locking reset member and a handle operating switch, one end of the unlocking handle is exposed on the frame, and the other end passes through the manual unlocking opening and is fixedly connected to the moving plate, the moving plate is slidably installed in the frame along the left and right directions, the manual locking reset member is directly or indirectly connected to the unlocking handle, and under the elastic action of the manual locking reset member, the manual unlocking opening moves to the non-unlocking position and triggers the handle operating switch, and the handle operating switch is installed on the frame.

[0016] Furthermore, a stop structure is provided on the left side of the sliding direction of the moving plate, and the stop structure includes a crank arm plate, a stop block and a stop seat. The middle part of the crank arm plate is rotatably supported on the inner mounting plate, the upper end of the crank arm plate is connected to the left end of the moving plate through a first stop pin, and the lower end of the crank arm plate is connected to the stop block through a second stop pin. The stop block is slidably installed in the stop seat, and the stop block is limitedly matched with the waist-shaped hole on the side wall of the stop seat through a third stop pin.

[0017] Furthermore, the operating mechanism also includes a circuit breaker interlocking structure, including a manual locking piece, a circuit breaker interlocking bent plate and a circuit breaker interlocking guide bracket, the manual locking piece is installed on the first linkage shaft, the first linkage shaft is rotatably supported on the frame, the circuit breaker interlocking bent plate is slidably installed on the circuit breaker interlocking guide bracket along the up and down directions, the circuit breaker interlocking bent plate can be locked with the manual locking piece after being lifted up, thereby preventing the first linkage shaft from rotating, and the circuit breaker interlocking guide bracket is installed on the frame.

[0018] Furthermore, a manual locking opening is provided on the manual locking piece, and the upper end of the circuit breaker interlocking bent plate is bent backward to form a manual locking portion, and the manual locking portion is inserted into the manual locking opening to form an interlock to prevent the manual locking piece from rotating.

[0019] Furthermore, the grounding interlocking structure includes a grounding locking plate, a grounding interlocking bent plate, a grounding interlocking guide bracket and a grounding interlocking switch. The grounding locking plate is rotatably mounted on the mounting plate through a second linkage shaft. A locking notch is provided on the grounding locking plate. The grounding interlocking bent plate is slidably mounted on the grounding interlocking guide bracket along the up and down directions. After the grounding interlocking bent plate is lifted, it can lock with the grounding locking plate and trigger the grounding interlocking switch.

[0020] Furthermore, a grounding locking notch is provided on the grounding locking plate, and the upper part of the grounding interlocking bent plate forms a grounding locking portion extending and folded to the left, and a grounding trigger portion extending and folded to the right, and the grounding locking portion is inserted into the grounding locking notch to form an interlocking to organize the rotation of the grounding locking plate and the second linkage shaft connected thereto, and at the same time, the grounding trigger portion contacts with the contacts of the grounding interlocking switch.

[0021] Furthermore, an isolation operation locking electromagnet and a grounding operation locking electromagnet are installed inside the frame to limit the position of the wrench rotated into place or the manually selected baffle.

[0022] Furthermore, the electric drive structure also includes an electromagnet, which is installed on the inner mounting plate and whose push rod can contact the flap portion at the end of the moving plate after being extended.

[0023] Furthermore, the operating mechanism also includes a crank operation limit structure, including an in-place unlocking baffle, a linkage crank arm, a third positioning pressure wheel and a baffle reset member. The in-place unlocking baffle is slidably installed in the frame along the left and right directions and is located between the manual operation selection baffle and the grounding operating shaft and the isolation operating shaft. The linkage crank arm is rotatably supported in the frame, the third positioning pressure wheel is installed on the second linkage shaft, and the baffle reset member is connected to the in-place unlocking baffle. One end of the linkage crank arm rotates after being acted upon by the third positioning pressure wheel and the other end thereof abuts against the in-place unlocking baffle, forcing the in-place unlocking baffle to overcome the elastic action of the baffle reset member and slide to the left.

[0024] (III) Beneficial effects

[0025] The utility model provides an operating mechanism for a direct-acting isolating switch in a high-voltage switch cabinet, which has the following beneficial effects:

[0026] 1. Small size and simple structure, which greatly meets the requirements of miniaturization and reliability of electrical equipment;

[0027] 2. Double-axis operation is adopted, and the isolation and grounding operations are set up on separate operating axes, avoiding operational errors on the same operating axis;

[0028] 3. A manual operation selection pin is provided. When operating any operating axis, the selection baffle will block the other operating axis, and the other operating axis cannot be operated when one state is not open;

[0029] 4. Each operating axis is equipped with a corresponding electrical lock. If the corresponding electrical lock is not released, the corresponding operating hole cannot be opened for operation, and the selectivity of the operation is confirmed again;

[0030] 5. It is equipped with an unlocking baffle in place. When the isolating switch does not reach the corresponding position during manual operation, the operating handle cannot be separated from the operating mechanism. The handle can only be separated after it is in place;

[0031] 6. The first and second position confirmation micro switches are used to provide dual position signals. When one of the signals fails, accurate electrical signals can still be provided for remote operation, meeting the "one-button sequential control" requirements of the State Grid;

[0032] 7. It is equipped with an electrically operated motor and an electromagnetic clutch, which can be disconnected from the motor during manual operation, resulting in less operating resistance and easier manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0034] Figure 2 It is a three-dimensional schematic diagram of the first viewing angle of the utility model after the panel is omitted;

[0035] Figure 3 It is a three-dimensional schematic diagram of the grounding interlocking structure in the utility model;

[0036] Figure 4 for Figure 2 A three-dimensional schematic diagram after omitting the manual operation selection baffle;

[0037] Figure 5 for Figure 2 A three-dimensional schematic diagram after omitting the manual operation selection baffle, the in-position unlocking baffle and the linkage crank arm;

[0038] Figure 6 It is a stereoscopic schematic diagram of the second viewing angle of the utility model after the manual locking piece and the circuit breaker interlocking bent plate are omitted;

[0039] Figure 7 for Figure 6 The structural diagram of the enlarged part of the circled part at A in the middle;

[0040] Figure 8 for Figure 6 A three-dimensional schematic diagram after omitting the electromagnet;

[0041] Fig. 9 It is a three-dimensional schematic diagram of the utility model from a third viewing angle;

[0042] Fig.10 It is a schematic diagram of the top view structure of the utility model;

[0043] Fig.11 for Fig.10 BB section view;

[0044] Fig.12 for Fig.10 CC section view;

[0045] Fig.13 for Fig.10 DD section view after omitting the front plate.

[0046] In the figure:

[0047] 11. Panel;

[0048] 11a. Grounding operation hole;

[0049] 11b. Isolate the operation hole;

[0050] 11c. Electric and manual switching to select opening;

[0051] 11d. Manually unlock the opening;

[0052] 11e, Isolate and unlock the opening;

[0053] 11f, ground unlocking opening;

[0054] 11h, status display opening;

[0055] 12. Front panel;

[0056] 13. Middle plate;

[0057] 14. Bottom plate;

[0058] 15. Pillar;

[0059] 21. Wrench;

[0060] 22. Manual operation selection baffle;

[0061] 22a, first guide slot;

[0062] 22b, installation part;

[0063] 23. First linkage shaft;

[0064] 24. A first guide column;

[0065] 25. Isolation operation switch;

[0066] 26. Grounding operating switch;

[0067] 31. Electromagnetic clutch;

[0068] 32. The first reduction gear set;

[0069] 41. Ground operating shaft;

[0070] 42. Isolate the operating shaft;

[0071] 43. First gear;

[0072] 44. Second gear;

[0073] 51. Unlock the handle;

[0074] 52. Sports board;

[0075] 52a, second guide slot;

[0076] 52b, flap portion;

[0077] 53. Manual locking reset member;

[0078] 54. Handle-operated switch;

[0079] 55. Second guide column;

[0080] 56. First tension spring support;

[0081] 61. Manual locking plate;

[0082] 61a, manual locking opening;

[0083] 62. Circuit breaker interlocking bent plate;

[0084] 63. Circuit breaker interlocking guide bracket;

[0085] 71. Ground locking plate;

[0086] 71a, locking notch;

[0087] 72. Ground interlocking bent plate;

[0088] 73. Grounding interlocking guide bracket;

[0089] 74. Earthing interlock switch;

[0090] 75. Second linkage shaft;

[0091] 81. First position confirmation switch;

[0092] 82. Second position confirmation switch;

[0093] 831, first positioning pressure wheel;

[0094] 831a, first positioning notch;

[0095] 832, second positioning pressure wheel;

[0096] 832a, second positioning protrusion;

[0097] 84. Positioning sleeve;

[0098] 84a, third positioning protrusion;

[0099] 85. Second reduction gear set;

[0100] 91. Isolation operation locking electromagnet;

[0101] 92. Ground-operated locking electromagnet;

[0102] 101. Electromagnet;

[0103] 111. Unlock the baffle in place;

[0104] 112. Linked crank arm;

[0105] 113. The third positioning pressure wheel;

[0106] 114. Baffle reset member;

[0107] 115a, large hole;

[0108] 115b, small hole;

[0109] 121, crank arm plate;

[0110] 122, stop block;

[0111] 123, stop seat;

[0112] 1242, second stop pin;

[0113] 1243. Third stop pin. DETAILED DESCRIPTION

[0114] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0115] See attached Figure 1-13, an operating mechanism for a direct-acting disconnector of a high-voltage switch cabinet, mainly comprising a frame, an electric-manual switching selection structure, an electric drive structure, a manual drive structure, a manual drive unlocking structure, a circuit breaker interlocking structure, a grounding interlocking structure and a closing and opening signal acquisition structure.

[0116] In this embodiment, the rack includes a plurality of mounting plates arranged in parallel and connected and fixed by columns 15. The mounting package specifically includes a panel 11, a front panel 12, a middle panel 13 and a bottom panel 14 arranged in sequence from front to back. The panel 11 is provided with a grounding operation hole 11a, an isolation operation hole 11b, an electric manual switching selection opening 11c arranged on the left and right sides of the grounding operation hole 11a and the isolation operation hole 11b, a manual unlocking opening 11d and a status display opening 11h.

[0117] In this embodiment, the electric manual switching selection structure includes a wrench 21 and a manual operation selection baffle 22, one end of the wrench 21 is exposed on the panel 11, and the other end thereof passes through the electric manual switching selection opening 11c and is fixedly connected to the left end of the manual operation selection baffle 22, and the manual operation selection baffle 22 is parallelly and rotatably arranged between the panel 11 and the front panel 12 through a first linkage shaft 23 (wherein, a first arc-shaped guide long hole 22a is opened at the left end of the manual operation selection baffle 22, and a first guide column 24 is installed on the back of the panel 11, and the guide column is matched with the guide long hole), one end of the first linkage shaft 23 is supported on the panel 11, and the other end passes through the front plate 12 and the middle plate 13 and is supported on the bottom plate 14. When the wrench 21 moves to the middle of the electric manual switching selection opening 11c, the manual operation selection baffle 22 blocks the grounding operation hole 11a and the isolation operation hole 11b; when the wrench 21 moves to the upper end of the electric manual switching selection opening 11c, the manual operation selection baffle 22 blocks the grounding operation hole 11a and the isolation operation hole 11b is exposed; when the wrench 21 moves to the upper end of the electric manual switching selection opening 11c, the manual operation selection baffle 22 blocks the isolation operation hole 11b and the grounding operation hole 11a is exposed.

[0118] In this embodiment, the electric drive structure is arranged on the left side of the electric manual switching selection structure, and the electric drive structure includes a motor (not shown) installed on the frame, an electromagnetic clutch 31 and a first reduction gear group 32. The motor is installed on the front side of the middle plate 13, and the electromagnetic clutch 31 and the first reduction gear group 32 are installed on the rear side of the middle plate 13. The motor, the electromagnetic clutch 31, the first reduction gear group 32 and the first gear 43 of the grounding operating shaft 41 are sequentially driven and matched.

[0119] In this embodiment, the manual drive structure is arranged behind the electric manual switching selection structure, and the manual drive structure includes a grounding operation shaft 41 and an isolation operation shaft 42 arranged opposite to the grounding operation hole 11a and the isolation operation hole 11b. The grounding operation shaft 41 and the isolation operation shaft 42 are arranged parallel to the output shaft of the electromagnetic clutch 31 and are rotatably supported at both ends on the front plate 12 and the bottom plate 14. The grounding operation shaft 41 and the isolation operation shaft 42 are respectively installed with a first gear 43 and a second gear 44, and the first gear 43 and the second gear 44 are meshed with each other. The rear end of the grounding operation shaft 41 passes through the bottom plate 14 to serve as an operation output shaft. The crank passes through the corresponding grounding operation hole 11a or the isolation operation hole 11b and is combined with the grounding operation shaft 41 or the isolation operation shaft 42. By rotating the crank, the operation output shaft is rotated to complete the corresponding closing, opening and grounding operations.

[0120] In this embodiment, the manually driven unlocking structure is arranged on the right side of the electric manual switching selection structure, and the manually driven unlocking structure includes an unlocking handle 51, a moving plate 52, a manual locking reset member 53 and a handle operation switch 54. The handle operation switch, the isolation operation switch, the grounding operation switch and the grounding interlocking switch adopt a travel switch. One end of the unlocking handle 51 is exposed on the panel 11, and the other end passes through the manual unlocking opening 11d and is fixedly connected to the moving plate 52. The moving plate 52 is slidably installed on the front plate 12 along the left and right directions (wherein, the moving plate 52 is provided with a plurality of second guide long holes 52a extending in the left and right directions, and the front plate 12 is provided with a second guide column 55, and the second guide column 55 is guided and matched with the second guide long hole 52a). The manual locking reset member 53 is directly or indirectly connected to the unlocking handle 51. Under the elastic action of the manual locking reset member 53, the manual unlocking opening 11d moves to the non-unlocking position and triggers the handle operation switch 54. The handle operation switch 54 is installed on the back of the front mounting plate. The manual locking reset member 53 is a manual locking tension spring, the right end of which is connected to the moving plate 52 , and the left end of which is connected to a first tension spring support 56 , which is installed on the left side of the front plate 12 .

[0121] In this embodiment, the circuit breaker interlocking structure is arranged below the first linkage shaft 23, and the circuit breaker interlocking structure comprises a manual locking piece 61, a circuit breaker interlocking bent plate 62 and a circuit breaker interlocking guide bracket 63, wherein the manual locking piece 61 is mounted on the first linkage shaft 23, the first linkage shaft 23 is rotatably supported on the panel 11 and the front plate 12, the circuit breaker interlocking bent plate 62 is slidably mounted on the circuit breaker interlocking guide bracket 63 along the up-down direction, the circuit breaker interlocking bent plate 62 can be locked with the manual locking piece 61 after being lifted up, so as to prevent the first linkage shaft 23 from rotating, and the circuit breaker interlocking guide bracket 63 is mounted on the lower side of the front plate 12. In some embodiments, specifically, a manual locking opening 61a is provided on the manual locking piece 61, the upper end of the circuit breaker interlocking bent plate 62 is bent backward to form a manual locking portion, and the manual locking portion is inserted into the manual locking opening 61a to form an interlocking to prevent the manual locking piece 61 and the first linkage shaft 23 connected thereto from rotating.

[0122] In this embodiment, the grounding interlocking structure is arranged between the first linkage shaft 23 and the unlocking handle 51, and the grounding interlocking structure includes a grounding locking plate 71, a grounding interlocking bent plate 72, a grounding interlocking guide bracket 73 and a grounding interlocking switch 74. The grounding locking plate 71 is parallelly and rotatably arranged between the panel 11 and the front plate 12 through the second linkage shaft 75. The two ends of the second linkage shaft 75 are respectively supported on the panel 11 and the front plate 12. The grounding interlocking bent plate 72 is slidably installed on the grounding interlocking guide bracket 73 along the up and down directions. After the grounding interlocking bent plate 72 is lifted up, it can lock with the grounding locking plate 71 and trigger the grounding interlocking switch 74. The grounding interlocking guide bracket 73 and the grounding interlocking switch 74 are installed on the back of the panel 11. In some embodiments, the grounding locking piece 71 is provided with a grounding locking notch 71a, and the upper part of the grounding interlocking bent plate 72 forms a grounding locking portion extending and folding to the left, and a grounding trigger portion extending and folding to the right, and the grounding locking portion is inserted into the grounding locking notch 71a to form an interlocking to prevent the grounding locking piece 71 and the second linkage shaft 75 connected thereto from rotating, and at the same time, the grounding trigger portion contacts the contact of the grounding interlocking switch 74. The grounding locking piece 71 is also provided with a closing, opening and grounding indication mark, which can be displayed through the status display opening 11h to facilitate observation of the switch status.

[0123] In this embodiment, the closing and opening signal acquisition structure includes a first position confirmation switch 81, a second position confirmation switch 82, a positioning pressure wheel and a positioning sleeve 84. The first position confirmation switch 81 and the second position confirmation switch 82 are micro switches. The first position confirmation switch 81 is installed on the front plate 12, and the second position confirmation switch 82 is installed on the bottom plate 14. Both are arranged on the circumference of the second linkage shaft 75. The second linkage shaft 75 is matched with the isolation operation shaft 42 through the second reduction gear set 85 (arranged on the back of the bottom plate 14). The first position confirmation switch 81 and the second position confirmation switch 82 are provided with at least one group, the positioning pressure wheel and the positioning sleeve 84 are both installed on the second linkage shaft 75 and rotate synchronously with the second linkage shaft 75, the positioning pressure wheel is located between the panel 11 and the front plate 12, and the positioning sleeve 84 is located between the front plate 12 and the bottom plate 14, each of the first position confirmation switches 81 is engaged with the positioning protrusion or positioning recess of the positioning pressure wheel, and each of the second position confirmation switches 82 is engaged with the positioning protrusion or positioning recess of the positioning sleeve 84, thereby outputting signals to the outside. The positions of the engaged positioning protrusions or positioning recesses are different and the confirmation switches of the engaged positions are different, and the signals output to the outside are also different. The positioning pressure wheel includes a first positioning pressure wheel 831 and a second positioning pressure wheel 832 arranged from front to back. The first positioning pressure wheel 831 is provided with a first positioning recess 831a, and the second positioning pressure wheel 832 is provided with three second positioning protrusions 832a. The first position confirmation switch 81 is provided with two pairs. The front pair of first position confirmation switches 81 cooperate with the outer cylindrical surface of the first positioning pressure wheel 831 or the first positioning recess 831a, and the rear pair of first position confirmation switches 81 cooperate with the outer cylindrical surface of the second positioning pressure wheel 832 or the second positioning protrusion 832a. Correspondingly, the positioning sleeve 84 is provided with a third positioning protrusion 84a that cooperates with the second position confirmation switch 82. The setting of the dual position signal can ensure that an accurate electrical signal can be provided for remote operation when one of the signals fails.

[0124] In this embodiment, a stop structure is provided on both upper and lower sides of the left end of the moving plate 52 in the sliding direction, and the stop structure includes a crank arm plate 121, a stop block 122 and a stop seat 123. The middle part of the crank arm plate 121 is rotatably supported on the front plate 12. The upper end of the crank arm plate 121 is connected to the left end of the moving plate 52 through a first stop pin, and the lower end is connected to the stop block 122 through a second stop pin 1242. The stop block 122 is slidably installed in the stop seat 123, and the stop block 122 is limitedly matched with the waist-shaped hole on the side wall of the stop seat 123 through a third stop pin 1243. Among them, the hole positions where the crank arm is connected to the first stop pin and the second stop pin 1242 are all waist-shaped holes. The setting of the stop structure can prevent the moving plate 52 from sliding beyond the stroke, and at the same time can increase the structural strength and shorten the response and reset time.

[0125] In this embodiment, an isolation operation switch 25 and a grounding operation switch 26 are provided on the back of the panel 11 , and the isolation operation switch 25 and the grounding operation switch 26 are respectively provided on the upper and lower sides of the rotation direction of the manual operation selection baffle 22 .

[0126] In this embodiment, an isolation operation locking electromagnet 91 and a grounding operation locking electromagnet 92 are installed on the internal mounting plate to limit the manual selection baffle that is rotated into place (specifically, the manual selection baffle installation wrench 21 is limited to the mounting portion 22b protruding from the main body). When electrically locked, not only can the operation not be performed, but the grounding operation hole 11a or the isolation operation hole 11b that does not need to be operated is also blocked. Among them, the panel 11 is respectively provided with an isolation unlocking opening 11e and a grounding unlocking opening 11f corresponding to the isolation operation locking electromagnet 91 and the grounding operation locking electromagnet 92.

[0127] In this embodiment, the electric drive structure also includes an electromagnet, which is installed on the lower side of the front plate 12 and located on the right side of the circuit breaker interlocking guide bracket 63, and its push rod can contact the flap part 52b at the end of the moving plate 52 (specifically the right end) after being extended.

[0128] In this embodiment, the operating mechanism also includes a crank operation limiting structure, including an in-place unlocking baffle 111, a linkage crank arm 112, a third positioning pressure wheel 113 and a baffle reset member 114, the in-place unlocking baffle 111 is slidably installed in the frame along the left and right directions and is located between the manual operation selection baffle 22 and the grounding operation shaft 41 and the isolation operation shaft 42. Specifically, the in-place unlocking baffle 111 is provided with a third guide long hole, a third guide column is fixed on the back of the panel 11, the third guide long hole is matched with the third guide column for guiding, the linkage crank arm 112 is rotatably supported in the frame, and the third positioning pressure wheel 113 is provided with a third guide column for guiding. 13 is installed on the second linkage shaft 75 and rotates synchronously with the second linkage shaft 75, the baffle reset member 114 is connected to the unlocked baffle 111, the baffle reset member 114 is specifically a second tension spring, one end of the second tension spring is connected to the unlocked baffle 111, and the other end can be connected to the second tension spring support (not shown in the figure), the second tension spring support is fixed at the lower right side of the front plate 12, one end of the linkage crank arm 112 is rotated after being acted upon by the third positioning pressure wheel 113 and the other end thereof abuts against the unlocked baffle 111, forcing the unlocked baffle 111 to overcome the elastic action of the baffle reset member 114 and slide to the left. The in-place unlocking baffle 111 is provided with a grounding locking hole and an isolation locking hole. The grounding locking hole and the isolation locking hole both include a large hole 115a and a small hole 115b which are interconnected. The diameter of the small hole 115b is located between the two diameters of the stepped shaft of the crank. When the in-place unlocking baffle 111 is moved into place, the small diameter end of the crank falls into the small hole 115b, and the large diameter end is located on the rear side of the in-place unlocking baffle 111, so the crank cannot be pulled out. When the in-place unlocking baffle 111 is moved to the left into place, its large hole 115a is opposite to the grounding operating hole 11a and the isolation operating hole 11b, and the crank can be pulled out.

[0129] The operation instructions of the utility model mechanism are as follows:

[0130] 1. When not in manual operation, the wrench is in the middle position;

[0131] 2. During the isolation operation, pull the wrench to the upper position (limited to the locking electromagnet and the circuit breaker being open and the grounding switch being in the grounding position);

[0132] 3. When grounding, pull the wrench to the lower position (limited to the locking electromagnet and circuit breaker open and isolating switch in the isolation closed position);

[0133] 4. When operating manually, pull the handle from the left position to the right position;

[0134] 5. Insert the crank and turn it clockwise for closing operation and counterclockwise for opening operation. If the operation is out of the correct position, the crank cannot be pulled out. If it is moved to another position, the crank cannot be turned and is locked. Pull out the crank and pull the pin to the middle.

[0135] 6. When the grounding switch is in the grounded state, manually pull the circuit breaker interlocking bent plate down 10mm to serve as the mechanical interlocking point of the interlocking output signal;

[0136] 7. When the machine is controlled manually, a machine will interlock the circuit breaker and bend the plate upward by 10mm, and the mechanism cannot be operated manually;

[0137] 8. Manual operation is not possible when the appliance is locked;

[0138] 9. Insert a thin rod into the isolation unlocking opening / ground unlocking opening on the left side of the mechanism to unlock the locking electromagnet;

[0139] 10. When there is a power outage, pull the baffle to the right to unlock it and pull out the crank.

[0140] 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0141] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An operating mechanism for a direct-acting isolating switch in a high-voltage switch cabinet, characterized in that: include: The rack has a grounding operation hole, an isolation operation hole, an electric manual switching selection hole and a manual unlocking hole respectively arranged on the left and right sides of the grounding operation hole and the isolation operation hole; The electric manual switching selection structure includes a wrench and a manual operation selection baffle, wherein one end of the wrench is exposed on the panel, and the other end thereof passes through the electric manual switching selection opening and is fixedly connected to the left end of the manual operation selection baffle, and the manual operation selection baffle is arranged parallel to the mounting plate and the right end thereof is rotatably supported on the mounting plate through a first linkage shaft; Electric drive structure; The manual drive structure comprises a grounding operation shaft and an isolation operation shaft which are arranged in parallel with the clutch output shaft and are rotatably supported on the frame, the grounding operation shaft and the isolation operation shaft are arranged opposite to the grounding operation hole and the isolation operation hole respectively, the grounding operation shaft and the isolation operation shaft are respectively mounted with a first gear and a second gear, the first gear and the second gear are meshed with each other, and the rear end of the grounding operation shaft passes through the frame to serve as an operation output shaft; The switch-on / off signal acquisition structure comprises a first position confirmation switch, a second position confirmation switch, a positioning pressure wheel and a positioning sleeve. The first position confirmation switch and the second position confirmation switch are mounted on a frame and are evenly arranged in the circumference of a second linkage shaft. The second linkage shaft is rotatably supported on the frame and is matched with the isolation operation shaft through a second reduction gear set. The first position confirmation switch and the second position confirmation switch are at least provided in one group. The positioning pressure wheel and the positioning sleeve are both mounted on the second linkage shaft and rotate synchronously with the second linkage shaft. Each of the first position confirmation switches is engaged with the positioning pressure wheel, and each of the second position confirmation switches is engaged with the positioning sleeve, so as to output signals to the outside. An isolating operation switch and a grounding operation switch are arranged on the back of the panel, and the isolating operation switch and the grounding operation switch are arranged on both sides of the rotation direction of the manual operation selection baffle.

2. The operating mechanism for a direct-acting isolating switch in a high-voltage switch cabinet according to claim 1, characterized in that: The operating mechanism also includes a manually driven unlocking structure, including an unlocking handle, a moving plate, a manual locking reset member and a handle operating switch, wherein one end of the unlocking handle is exposed on the frame, and the other end passes through a manual unlocking opening and is fixedly connected to the moving plate, and the moving plate is slidably installed in the frame along the left and right directions, and the manual locking reset member is directly or indirectly connected to the unlocking handle. Under the elastic action of the manual locking reset member, the manual unlocking opening moves to a non-unlocking position and triggers the handle operating switch, and the handle operating switch is installed on the frame.

3. The operating mechanism for a direct-acting isolating switch in a high-voltage switch cabinet according to claim 2, characterized in that: A stop structure is provided on the left side of the sliding direction of the moving plate, and the stop structure includes a crank arm plate, a stop block and a stop seat. The middle part of the crank arm plate is rotatably supported on the inner mounting plate, the upper end of the crank arm plate is connected to the left end of the moving plate through a first stop pin, and the lower end of the crank arm plate is connected to the stop block through a second stop pin. The stop block is slidably installed in the stop seat, and the stop block is limitedly matched with the waist-shaped hole on the side wall of the stop seat through a third stop pin.

4. The operating mechanism for a direct-acting isolating switch in a high-voltage switch cabinet according to claim 1, characterized in that: The operating mechanism also includes a circuit breaker interlocking structure, including a manual locking piece, a circuit breaker interlocking bent plate and a circuit breaker interlocking guide bracket, the manual locking piece is installed on the first linkage shaft, the first linkage shaft is rotatably supported on the frame, the circuit breaker interlocking bent plate is slidably installed on the circuit breaker interlocking guide bracket along the up and down directions, the circuit breaker interlocking bent plate can be locked with the manual locking piece after being lifted up, so as to prevent the first linkage shaft from rotating, and the circuit breaker interlocking guide bracket is installed on the frame.

5. The operating mechanism for a direct-acting isolating switch in a high-voltage switch cabinet according to claim 4, characterized in that: The manual locking piece is provided with a manual locking opening, the upper end of the circuit breaker interlocking bent plate is bent backward to form a manual locking portion, and the manual locking portion is inserted into the manual locking opening to form an interlock to prevent the manual locking piece from rotating.

6. The operating mechanism for a direct-acting isolating switch in a high-voltage switch cabinet according to claim 1, characterized in that: The grounding interlocking structure includes a grounding locking plate, a grounding interlocking bent plate, a grounding interlocking guide bracket and a grounding interlocking switch. The grounding locking plate is rotatably mounted on the mounting plate through a second linkage shaft. A locking notch is provided on the grounding locking plate. The grounding interlocking bent plate is slidably mounted on the grounding interlocking guide bracket along the up and down directions. After the grounding interlocking bent plate is lifted up, it can be locked with the grounding locking plate and trigger the grounding interlocking switch.

7. An operating mechanism for a direct-acting isolating switch in a high-voltage switch cabinet according to claim 6, characterized in that: A grounding locking notch is provided on the grounding locking plate, and the upper part of the grounding interlocking bent plate forms a grounding locking portion extending and folding to the left, and a grounding trigger portion extending and folding to the right. The grounding locking portion is inserted into the grounding locking notch to form an interlocking to prevent the grounding locking plate and the second linkage shaft connected thereto from rotating. At the same time, the grounding trigger portion contacts the contacts of the grounding interlocking switch.

8. The operating mechanism for a direct-acting isolating switch in a high-voltage switch cabinet according to claim 1, characterized in that: An isolation operation locking electromagnet and a grounding operation locking electromagnet are installed inside the frame, which are used to limit the position of the wrench rotated into place or the manual selection baffle.

9. The operating mechanism for a direct-acting isolating switch in a high-voltage switch cabinet according to claim 1, characterized in that: The electric drive structure also includes an electromagnet, which is installed on the inner mounting plate and whose push rod can contact the flap portion at the end of the moving plate after being extended.

10. The operating mechanism for a direct-acting isolating switch in a high-voltage switch cabinet according to claim 1, characterized in that: The operating mechanism also includes a crank operation limit structure, including an in-place unlocking baffle, a linkage crank arm, a third positioning pressure wheel and a baffle reset member. The in-place unlocking baffle is slidably installed in the frame along the left and right directions and is located between the manual operation selection baffle and the grounding operating shaft and the isolation operating shaft. The linkage crank arm is rotatably supported in the frame, the third positioning pressure wheel is installed on the second linkage shaft, and the baffle reset member is connected to the in-place unlocking baffle. One end of the linkage crank arm rotates after being acted upon by the third positioning pressure wheel and the other end thereof abuts against the in-place unlocking baffle, forcing the in-place unlocking baffle to overcome the elastic action of the baffle reset member and slide to the left.

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