Safety interlocking device of switch cabinet
By designing a switch cabinet safety interlock device and utilizing the linkage between the crank handle, prism, rotating ring, transmission belt and lead screw, the cabinet door can be opened only after grounding, solving the safety hazard caused by forgetting the grounding operation and improving the safety and reliability of the switch cabinet.
Patent Information
- Application Number
- CN202422735398.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-11-11
AI Technical Summary
During the maintenance and inspection of the switch cabinet, the maintenance personnel may forget to do the grounding operation due to negligence, causing the switch cabinet to be energized and endangering personal safety, posing a safety hazard.
A safety interlocking device for a switch cabinet is designed. By linking the crank handle with components such as the prism, rotating ring, transmission belt, power gear and screw, it ensures that the cabinet door can only be opened after grounding. The cooperation between the locking block and the boss and groove prevents the crank handle from disengaging, thus achieving safe locking.
It effectively prevents safety accidents caused by forgetting to do grounding operations, improves the safety of the switch cabinet and the reliability of the equipment, ensures that the cabinet door can only be opened in the grounded state, and enhances the safety of the equipment.
Smart Images
Figure CN223347653U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of switch cabinets, in particular to a safety interlocking device for a switch cabinet. Background Art
[0002] Switchgear is a complete set of power distribution equipment assembled from primary and secondary equipment according to a specific circuit plan, used to control and protect circuits and equipment. Its primary function is to open and close, control, and protect electrical equipment during the power system's generation, transmission, distribution, and energy conversion processes.
[0003] During switchgear maintenance and inspection, in order to prevent the switchgear from being energized and endangering personal safety, the grounding knife in the grounding system needs to be grounded. In actual operation, maintenance personnel may forget to do the grounding operation when opening the switchgear door due to negligence, which may cause certain safety hazards and thus lead to safety accidents. Utility Model Content
[0004] The purpose of the present utility model is to provide a switch cabinet safety interlocking device to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a switch cabinet safety interlocking device, comprising a switch cabinet and a crank handle, wherein a control box is fixedly connected to one side of the switch cabinet, an insert box is fixedly connected to the middle part of the inner side of the control box, a prism is rotatably connected to the inner side of the control box, the prism is rotatably connected to the inner side of the insert box, two sets of rotating rings are fixedly connected to the outer side of the rear side of the prism, a transmission belt is sleeved on the outer side of the rotating ring, a driven ring is sleeved on the other end of the transmission belt, the rear part of the driven ring is rotatably connected to the inner side of the control box, a power gear is fixedly connected to the outer side of the rear side of the driven ring, a connecting gear is meshed with the outer side of the power gear, a lead screw is fixedly connected to the inner side of the connecting gear, both ends of the lead screw are rotatably connected to the inner side of the control box, and the lead screw outer side is fixedly connected to the inner side of the control box. The side thread is connected with a first ear, and the upper part of the first ear on the lower side is fixedly connected to a moving contact piece, the lower part of the inner side of the control box is fixedly connected to a static contact piece, and one side of the first ear on the upper side is fixedly connected to a moving block, and a lower inclined platform is provided on the upper front side of the moving block, and two groups of first lifting rods are fixedly connected to the upper side of the interior of the control box, and the second ear is slidably connected to the outer side of the first lifting rod, and a lifting block is fixedly connected between the second ears on both sides, and an upper inclined platform matching the lower inclined platform is provided at the lower part of the lifting block, and an embedding groove is provided at the upper part of the lifting block, and the internal rotating shaft at the front side of the switch cabinet is connected to the cabinet door, and the upper part of one side of the cabinet door is fixedly connected to a connecting piece, and the lower part of the connecting piece is fixedly connected to an embedded block matching the embedded groove, and a connecting hole matching the connecting piece is provided on the upper part of the switch cabinet.
[0006] Preferably, a connecting groove facing the prism is opened in the middle of one side of the cabinet door.
[0007] Preferably, two sets of upper and lower sliding rods are fixedly connected to one side of the control box, and the sliding rods are slidably connected to the inside of the first ear on the other side.
[0008] Preferably, two sets of connecting frames are fixedly connected to the inner part of the upper side of the control box, the lower part of the first lifting rod is fixedly connected to the connecting frame, the outer side of the first lifting rod is sleeved with a first spring, and the two ends of the first spring are respectively fixedly connected to the second ear and the connecting frame.
[0009] Preferably, a threaded rod is fixedly connected to the inside of the prism, and a moving cylinder is threadedly connected to the outside of the threaded rod, and connecting blocks are fixedly connected on both sides of the moving cylinder, and the connecting blocks are slidably connected to the inside of the prism. Four groups of grooves are provided at the upper and lower ends of the moving cylinder, and locking blocks are slidably connected to the upper and lower sides of the prism. A boss matching the groove is provided on one side of the locking block, and a control groove is provided inside the prism. Third ears are fixedly connected on both sides of the locking block, and a second lifting rod is slidably connected to the inside of the third ear. A second spring is provided on the outside of the second lifting rod, and both ends of the second spring are respectively fixedly connected to the inner wall of the control groove and the third ear.
[0010] Preferably, a prismatic groove matching the prism is provided inside the crank, and a locking hole matching the locking block is provided inside the crank.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] 1. The utility model inserts the crank into the insertion box, drives the prism to rotate through the prismatic groove, drives the driven ring to rotate through the transmission belt, and the power gear rotates to drive the lead screw to rotate through the connecting gear, and increases the number of rotations of the lead screw, the lead screw drives the first ear to move, the lead screw drives the first ear to move, the lower first ear drives the moving contact piece to contact the static contact piece, and the moving contact piece is connected to the internal circuit of the switch cabinet, thereby achieving grounding, and the upper first ear drives the moving block to move, so that the moving block is separated from the lower part of the lifting block, and the lifting block moves downward along the first lifting rod through the second ear, so that the embedded block is separated from the embedded groove, and the cabinet door is unlocked. When the prism rotates in the direction, the lead screw rotates in the direction, and when the moving block approaches the lifting block, the lower inclined platform cooperates with the upper inclined platform to push the lifting block upward to lock the cabinet door, ensuring that the cabinet door can be opened only when the switch cabinet is successfully grounded, thereby improving the safety of the switch cabinet;
[0013] 2. The utility model also drives the movable cylinder to move along the inside of the prism through the threaded rod through the prism, so that the locking block is disengaged from the groove through the boss, and the locking block is extended. The locking block is inserted into the locking hole to prevent the crank from being disengaged. When the prism is rotated into place, the locking block faces another set of grooves, and the second spring pushes the third ear to make the boss enter the groove, so that the crank can be smoothly taken out, ensuring that the crank cannot be pulled out when it is rotated into place, thereby improving the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first perspective;
[0015] Figure 2 This is a cross-sectional view of the control box structure from the second viewing angle of the present invention;
[0016] Figure 3 This is a schematic diagram of the structure of the mobile block from the third perspective of the present invention;
[0017] Figure 4 This is a cross-sectional view of the prism structure of the utility model from a fourth viewing angle;
[0018] Figure 5 This is a cross-sectional view of the prism structure of the utility model from the fifth viewing angle;
[0019] Figure 6 This is a cross-sectional view of the crank structure from the sixth perspective of the present invention.
[0020] Figure: 1, switch cabinet; 2, control box; 3, insert box; 4, prism; 5, rotating ring; 6, transmission belt; 7, driven ring; 8, power gear; 9, connecting gear; 10, lead screw; 11, sliding rod; 12, first ear; 13, moving contact piece; 14, stationary contact piece; 15, moving block; 16, lower inclined platform; 17, lifting block; 18, upper inclined platform; 19, embedding groove; 20, cabinet door; 21, connecting hole; 22 , connecting piece; 23, embedded block; 24, connecting groove; 25, connecting frame; 26, first lifting rod; 27, first spring; 28, second ear; 29, crank; 30, prismatic groove; 31, threaded rod; 32, moving cylinder; 33, groove; 34, locking block; 35, boss; 36, locking hole; 37, control groove; 38, third ear; 39, second lifting rod; 40, second spring; 41, linkage block. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] See also Figure 1-6 The utility model provides a technical solution: a switch cabinet safety interlocking device, including a switch cabinet 1, a crank handle 29, a control box 2 fixedly welded on one side of the switch cabinet 1, an insert box 3 fixedly welded on the middle part of the inner side of the control box 2, a prism 4 rotatably installed inside the control box 2, the prism 4 rotatably installed inside the insert box 3, two sets of rotating rings 5 fixedly welded on the outer side of the rear of the prism 4, a transmission belt 6 is sleeved on the outer side of the rotating ring 5, a driven ring 7 is sleeved on the other end of the transmission belt 6, the rear part of the driven ring 7 is rotatably connected to the inner side of the control box 2, a power gear 8 fixedly welded on the outer side of the rear of the driven ring 7, and a connecting gear 9 is meshed and connected on the outer side of the power gear 8. A lead screw 10 is fixedly welded inside the connecting gear 9. Both ends of the lead screw 10 are rotatably connected to the inside of the control box 2. A first lug 12 is threadedly installed on the outer side of the lead screw 10. By rotating the prism 4, the rotating ring 5 drives the driven ring 7 to rotate through the transmission belt 6. The power gear 8 rotates and drives the lead screw 10 to rotate through the connecting gear 9, and increases the number of rotations of the lead screw 10. The lead screw 10 drives the first lug 12 to move. A moving contact piece 13 is fixedly welded on the upper part of the lower first lug 12. A static contact piece 14 is fixedly welded on the lower inner part of the control box 2. The lower first lug 12 drives the moving contact piece 13 to make the static contact piece 14 contact. The moving contact piece 13 is connected to the internal circuit of the switch cabinet 1 , thereby achieving grounding, a moving block 15 is fixedly welded on one side of the first ear 12 on the upper side, and a lower inclined platform 16 is provided on the upper front side of the moving block 15. Two sets of first lifting rods 26 are fixedly welded on the upper side of the control box 2. A second ear 28 is slidably installed on the outer side of the first lifting rod 26. A lifting block 17 is fixedly welded between the second ears 28 on both sides. An upper inclined platform 18 is provided at the lower part of the lifting block 17 to cooperate with the lower inclined platform 16, so that the lifting block 17 can be pushed upward when the moving block 15 moves. An embedding groove 19 is provided on the upper part of the lifting block 17. A cabinet door 20 is installed on the internal rotating shaft on the front side of the switch cabinet 1, and a connecting piece 22 is fixedly welded on the upper side of the cabinet door 20. An embedding block 23 that fits the embedding groove 19 is fixedly welded to the lower part of the connecting piece 22. The first ear 12 on the upper side drives the moving block 15 to move, so that the moving block 15 is separated from the lower part of the lifting block 17. The lifting block 17 moves downward along the first lifting rod 26 through the second ear 28, so that the embedding block 23 is separated from the embedding groove 19, thereby unlocking the cabinet door 20. A connecting hole 21 that fits the connecting piece 22 is opened on the upper part of the switch cabinet 1, which facilitates the insertion of the connecting piece 22 into the connecting hole 21. When the screw 10 rotates in the direction of rotation, when the moving block 15 approaches the lifting block 17, the lower inclined platform 16 cooperates with the upper inclined platform 18, thereby pushing the lifting block 17 upward to lock the cabinet door 20.
[0023] A connecting groove 24 is provided in the middle of one side of the cabinet door 20, facing the prism 4, to prevent the prism 4 from being blocked; two sets of upper and lower sliding rods 11 are fixedly welded on one side of the control box 2, and the sliding rod 11 is slidably installed inside the first ear 12 on the other side to ensure that the moving contact piece 13 and the moving block 15 are balanced on both sides; two sets of connecting frames 25 are fixedly welded inside the upper side of the control box 2, and the lower part of the first lifting rod 26 is fixedly welded to the connecting frame 25 to ensure that the first lifting rod 26 is stable up and down, and a first spring 27 is sleeved on the outer side of the first lifting rod 26. The two ends of 27 are fixedly welded to the second ear 28 and the connecting frame 25 respectively. The first spring 27 pushes the second ear 28 to make the lifting block 17 drop to prevent the embedded block 23 from getting stuck; a threaded rod 31 is fixedly welded inside the prism 4, and a moving cylinder 32 is threadedly installed on the outer side of the threaded rod 31. Linking blocks 41 are fixedly welded on both sides of the moving cylinder 32. The linking blocks 41 are slidably installed inside the prism 4. Four sets of grooves 33 are opened at the upper and lower ends of the moving cylinder 32. Locking blocks 34 are slidably connected to the upper and lower sides of the prism 4. A boss 35 is provided on one side of 34 to match the groove 33. When the prism 4 rotates, the threaded rod 31 is driven to rotate. A control groove 37 is provided inside the prism 4. Third lugs 38 are fixedly welded on both sides of the locking block 34. A second lifting rod 39 is slidably installed inside the third lug 38. A second spring 40 is sleeved on the outer side of the second lifting rod 39. The two ends of the second spring 40 are respectively fixedly welded to the inner wall of the control groove 37 and the third lug 38. The threaded rod 31 drives the moving cylinder 32 to move along the inside of the prism 4, so that the locking block 34 passes through the boss 3 5 disengages from the grooves 33, allowing the locking blocks 34 to extend. When the prism 4 is rotated into position, the locking blocks 34 face the other set of grooves 33. The second spring 40 pushes the third lug 38, causing the boss 35 to enter the grooves 33. The crank handle 29 is internally provided with a prismatic groove 30 that cooperates with the prism 4, allowing the crank handle 29 to drive the prism 4 to rotate. The crank handle 29 is internally provided with a locking hole 36 that cooperates with the locking block 34. When the locking block 34 is extended, it is inserted into the locking hole 36. If the prism 4 is not rotated into position, the crank handle 29 cannot be separated from the insertion box 3.
[0024] Working principle: When the utility model is in use, the crank 29 is inserted into the insertion box 3, and the prism 4 is driven to rotate through the prismatic groove 30. The rotating ring 5 drives the driven ring 7 to rotate through the transmission belt 6. The power gear 8 rotates and drives the screw 10 to rotate through the connecting gear 9, and increases the number of rotations of the screw 10. The screw 10 drives the first ear 12 to move. The screw 10 drives the first ear 12 to move. The lower first ear 12 drives the moving contact piece 13 to make the static contact piece 14 contact. The moving contact piece 13 is connected to the internal circuit of the switch cabinet 1, thereby achieving grounding. The upper first ear 12 drives the moving block 15 to move, so that the moving block 15 is separated from the lower part of the lifting block 17. The lifting block 17 moves downward along the first lifting rod 26 through the second ear 28. The embedded block 23 disengages from the embedded groove 19, unlocking the cabinet door 20. When the prism 4 rotates in the direction, the screw 10 rotates in the direction. When the moving block 15 approaches the lifting block 17, the lower inclined platform 16 cooperates with the upper inclined platform 18 to push the lifting block 17 upward to lock the cabinet door 20. The prism 4 drives the moving cylinder 32 to move along the inside of the prism 4 through the threaded rod 31, so that the locking block 34 disengages from the groove 33 through the boss 35, and the locking block 34 is extended. The locking block 34 is inserted into the locking hole 36 to prevent the crank 29 from disengaging. When the prism 4 is rotated into place, the locking block 34 faces another set of grooves 33. The second spring 40 pushes the third ear 38 to make the boss 35 enter the groove 33, so that the crank 29 can be smoothly taken out.
[0025] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A switch cabinet safety interlocking device, comprising a switch cabinet (1), a crank (29), characterized in that: A control box (2) is fixedly connected to one side of the switch cabinet (1), an insert box (3) is fixedly connected to the middle of the inner side of the control box (2), a prism (4) is rotatably connected to the inner side of the control box (2), and two sets of rotating rings (5) are fixedly connected to the outer side of the rear side of the prism (4), a transmission belt (6) is sleeved on the outer side of the rotating ring (5), and a driven ring (7) is sleeved on the other end of the transmission belt (6), and the driven ring ( 7) The rear portion is rotatably connected to the interior of the control box (2), the outer side of the rear portion of the driven ring (7) is fixedly connected to a power gear (8), the outer side of the power gear (8) is meshedly connected to a connecting gear (9), the interior of the connecting gear (9) is fixedly connected to a lead screw (10), both ends of the lead screw (10) are rotatably connected to the interior of the control box (2), the outer side of the lead screw (10) is threadedly connected to a first lug (12), and the upper part of the first lug (12) on the lower side is fixedly connected to a moving contact piece (13) The lower inner part of the control box (2) is fixedly connected with a static contact piece (14), the upper side of the first connecting ear (12) is fixedly connected with a moving block (15), the upper front part of the moving block (15) is provided with a lower inclined platform (16), the upper inner side of the control box (2) is fixedly connected with two groups of first lifting rods (26), the outer side of the first lifting rods (26) is slidably connected with a second connecting ear (28), and a lifting block (17) is fixedly connected between the second connecting ears (28) on both sides. An upper inclined platform (18) matching the lower inclined platform (16) is provided at the lower portion of the block (17); an embedding groove (19) is provided at the upper portion of the lifting block (17); a cabinet door (20) is connected to the internal rotating shaft at the front side of the switch cabinet (1); a connecting piece (22) is fixedly connected to the upper portion of one side of the cabinet door (20); an embedding block (23) matching the embedding groove (19) is fixedly connected to the lower portion of the connecting piece (22); and a connecting hole (21) matching the connecting piece (22) is provided at the upper portion of the switch cabinet (1).
2. A switch cabinet safety interlock device according to claim 1, characterized in that: A communication groove (24) facing the prism (4) is provided in the middle of one side of the cabinet door (20).
3. A switch cabinet safety interlock device according to claim 1, characterized in that: One side of the control box (2) is fixedly connected with two sets of upper and lower sliding rods (11), and the sliding rods (11) are slidably connected to the inside of the first ear (12) on the other side.
4. A switch cabinet safety interlock device according to claim 1, characterized in that: Two groups of connecting frames (25) are fixedly connected to the interior of the upper side of the control box (2); the lower part of the first lifting rod (26) is fixedly connected to the connecting frame (25); a first spring (27) is sleeved on the outer side of the first lifting rod (26); and the two ends of the first spring (27) are fixedly connected to the second ear (28) and the connecting frame (25) respectively.
5. The switch cabinet safety interlocking device according to claim 1, characterized in that: The prism (4) is fixedly connected with a threaded rod (31) inside, and the outer side of the threaded rod (31) is threadedly connected with a moving cylinder (32), and the two sides of the moving cylinder (32) are fixedly connected with linking blocks (41), and the linking blocks (41) are slidably connected to the inside of the prism (4), and four groups of grooves (33) are provided at the upper and lower ends of the moving cylinder (32), and the upper and lower sides of the prism (4) are slidably connected with locking blocks (34), and a boss (35) for matching the groove (33) is provided on one side of the locking block (34), and a control groove (37) is provided inside the prism (4), and the two sides of the locking block (34) are fixedly connected with a third ear (38), and the third ear (38) is slidably connected to the inside of the second lifting rod (39), and the second spring (40) is sleeved on the outer side of the second lifting rod (39), and the two ends of the second spring (40) are fixedly connected to the inner wall of the control groove (37) and the third ear (38) respectively.
6. A switch cabinet safety interlocking device according to claim 5, characterized in that: A prismatic groove (30) matching the prism (4) is provided inside the crank handle (29), and a locking hole (36) matching the locking block (34) is provided inside the crank handle (29).