KYN cabinet five-prevention interlocking device
By designing devices such as chain plates, lock blocks, curved chutes in the KYN cabinet, the chain function between the cabinet door and the grounding switch spindle is realized, and the safety hazards caused by the lack of chain function in the existing KYN cabinet are solved, which improves the safety of use and reduces the risk of failure.
Patent Information
- Application Number
- CN202421714533.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The existing KYN cabinet lacks chain function, which leads to the possibility of staff accidentally pulling, mistakenly closing the isolation switch and accidentally entering the live interval during the maintenance process, which increases the probability of equipment failure and poses a threat to the life safety of people.
A five-proof chaining device for KYN cabinet was designed. By installing a locking plate, lock block, arc-shaped slide chute, lock column, lock ring, connecting arm, bite block and other devices, the chaining function between the cabinet door and the grounding switch spindle is realized, ensuring that the grounding switch spindle cannot operate when the cabinet door is opened.
By simplifying the structure, reducing the transmission of mechanical parts, reducing the possibility of chain parts failure, improving the safety of use, avoiding the danger of maintenance personnel due to accidental contact, and also helping to save production costs.
Smart Images
Figure CN222851860U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of KYN cabinets, in particular to a five-protection interlocking device for a KYN cabinet. Background Art
[0002] KYN cabinet is a medium-voltage center-mounted switchgear, mainly used for power distribution and protection of power systems. This cabinet is mainly composed of a circuit breaker trolley and is usually installed in the middle of the switchgear, hence the name center-mounted cabinet. KYN cabinet is suitable for medium-voltage power systems with a rated voltage of 10kV to 35kV, and is widely used in data centers, commercial areas, residential distribution rooms and other places;
[0003] The existing conventional KYN cabinet uses a solenoid valve to close the cabinet door. This closing method has a simple structure, does not have a locking function, and is not safe. During the maintenance process, workers may accidentally pull the load, accidentally close the isolating switch, or accidentally enter the live interval, which increases the probability of equipment failure and even threatens the life safety of workers.
[0004] Therefore, a KYN cabinet five-protection interlocking device is specially proposed. Summary of the invention
[0005] In view of the deficiencies in the prior art, the utility model provides a five-protection interlocking device for a KYN cabinet, which has an interlocking function, ensures safety in use, avoids the problem of maintenance personnel accidentally touching the device and threatening their life safety, and solves the problem that the existing KYN cabinet does not have an interlocking function.
[0006] To achieve the above object, the utility model provides the following technical solutions: a KYN cabinet five-protection interlocking device, comprising a cabinet body and a cabinet door, the cabinet door is movably installed on the left side of the cabinet body, a first interlocking component is arranged on the right side of the cabinet door, an auxiliary component is arranged on the rear end of the cabinet body, a grounding switch main shaft is movably installed inside the auxiliary component, a connecting column is fixedly installed on the left side of the grounding switch main shaft, and the other end of the connecting column is inserted into the first interlocking component;
[0007] The first interlocking component includes a interlocking plate fixedly installed on the right side of the cabinet door, a lock groove is opened inside the interlocking plate, a lock column is fixedly installed on the left side of the connecting column, a lock ring is fixedly installed on the left surface of the lock column, and the left end of the lock column is located in the lock groove.
[0008] Preferably, the inner walls of the upper and lower ends of the lock groove are provided with a contraction chamber, a lock block is movably installed inside the contraction chamber, a spring is fixedly installed inside the contraction chamber, and notches are provided at the front and rear end positions of the lock ring.
[0009] Preferably, after the locking column is inserted into the locking slot, the two groups of locking blocks are stuck in the gap between the locking ring and the connecting column, and the width of the locking blocks is smaller than the width of the slot.
[0010] Preferably, the auxiliary component includes a support plate fixedly mounted at the rear end of the cabinet, a groove penetrating the main shaft of the grounding switch is opened in the middle of the support plate, a group of sliding chambers are opened at the upper and lower ends of the groove inside the support plate, and symmetrical arc-shaped sliding grooves are opened on the inner walls of the front and rear ends of the sliding chambers.
[0011] Preferably, the arc-shaped sliding grooves provided in the two groups of sliding chambers are inclined toward the direction of the grooves provided in the support plate.
[0012] Preferably, a second interlocking component is provided on the right side of the interlocking plate, and the second interlocking component includes two sets of interlocking arms movably installed at the upper and lower ends of the right side of the interlocking plate, and an axis is provided at the connection between the interlocking arm and the interlocking plate, and a bite block is fixedly installed on the right side of the interlocking arm toward the direction of the main axis of the grounding switch, and limiting sliding columns are fixedly installed at the front and rear end positions of the right side of the interlocking arm.
[0013] Preferably, the right end of the linkage arm extends into the sliding chamber, the limiting sliding column is clamped in the arc-shaped sliding groove, and the movement trajectory of the right end of the linkage arm is limited by the limiting sliding column and the arc-shaped sliding groove.
[0014] Preferably, the side of the bite block close to the main shaft of the grounding switch is arc-shaped and is provided with teeth engaged with the main shaft of the grounding switch. After the right end of the linkage arm moves through the limiting slide column and the arc-shaped slide groove, the bite block can contact the main shaft of the grounding switch.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] 1. This KYN cabinet five-protection interlocking device has an interlocking function by installing interlocking plates, lock blocks, arc-shaped slides, lock columns, lock rings, linkage arms, bite blocks and other devices. The safety of use is guaranteed to avoid maintenance personnel accidentally touching the problem that threatens their life safety.
[0017] 2. This KYN cabinet five-protection interlocking device, by installing the first interlocking component, auxiliary components, connecting columns, second interlocking components and other devices, achieves the purpose of interlocking while having a simple overall structure, reduces the transmission of mechanical components, reduces the possibility of failure of interlocking components, and also helps to save production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is a schematic diagram of the overall structure of the interlocking device of the utility model;
[0020] Figure 2 This is a schematic diagram of the planar structure of the interlocking device of the utility model;
[0021] Figure 3 This is a schematic diagram of the enlarged structure of the details of A of the utility model;
[0022] Figure 4 This is a schematic diagram of the limiting structure of the connecting column of the utility model;
[0023] Figure 5 It is a schematic diagram of the structure of the linkage arm of the utility model.
[0024] Description of reference numerals:
[0025] 1. Cabinet body; 2. Cabinet door; 3. First interlocking component; 31. Interlocking plate; 32. Locking groove; 33. Contraction chamber; 34. Locking block; 35. Spring; 4. Auxiliary parts; 41. Support plate; 42. Sliding chamber; 43. Arc-shaped sliding groove; 5. Earthing switch main shaft; 6. Connecting column; 61. Locking column; 62. Locking ring; 63. Notch; 7. Second interlocking component; 71. Linking arm; 72. Engaging block; 73. Limiting sliding column. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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 creative work are within the scope of protection of the utility model.
[0027] See also Figures 1 to 5 , the utility model provides a technical solution:
[0028] A five-protection interlocking device for a KYN cabinet comprises a cabinet body 1 and a cabinet door 2, wherein the cabinet door 2 is movably mounted on the left side of the cabinet body 1, a first interlocking component 3 is arranged on the right side of the cabinet door 2, an auxiliary component 4 is arranged on the rear end of the cabinet body 1, a grounding switch main shaft 5 is movably mounted inside the auxiliary component 4, a connecting column 6 is fixedly mounted on the left side of the grounding switch main shaft 5, the other end of the connecting column 6 is inserted into the first interlocking component 3, the first interlocking component 3 comprises an interlocking plate 31 fixedly mounted on the right side of the cabinet door 2, a locking groove 32 is provided inside the interlocking plate 31, a locking column 61 is fixedly mounted on the left side of the connecting column 6, a locking ring 62 is fixedly mounted on the left side surface of the locking column 61, the left end of the locking column 61 is located in the locking groove 32, and a contraction chamber 33 is provided on the inner walls of the upper and lower ends of the locking groove 32 A locking block 34 is movably installed inside the contraction chamber 33, and a spring 35 is fixedly installed inside the contraction chamber 33. Notches 63 are provided at the front and rear ends of the locking ring 62. After the locking column 61 is inserted into the locking slot 32, the two groups of locking blocks 34 are stuck in the gap between the locking ring 62 and the connecting column 6. The width of the locking block 34 is smaller than the width of the notch 63. The auxiliary component 4 includes a support plate 41 fixedly installed at the rear end of the cabinet 1. A groove penetrating the main shaft 5 of the grounding switch is provided in the middle of the support plate 41. A group of sliding chambers 42 are respectively provided at the upper and lower ends of the groove inside the support plate 41. Symmetrical arc-shaped sliding grooves 43 are provided on the inner walls of the front and rear ends of the sliding chambers 42. The arc-shaped sliding grooves 43 provided in the two groups of the sliding chambers 42 are inclined toward the direction of the groove provided in the support plate 41.
[0029] By adopting the above technical solution, when the cabinet body 1 is under maintenance and the cabinet door 2 is opened, the earthing switch main shaft 5 rotates and drives the connecting column 6 at its left end to rotate. When the connecting column 6 rotates, the locking column 61 is driven to rotate in the locking groove 32. The locking column 61 is located in the locking groove 32. The two sets of locking blocks 34 inside the locking groove 32 are stuck between the locking ring 62 and the connecting column 6. When the locking column 61 rotates, the locking ring 62 on the surface of the locking column 61 also rotates. The locking ring 62 is provided with a notch 63. The size of the notch 63 is such that the lock block 34 can pass through. When the notch 63 of the lock ring 62 rotates to overlap the lock block 34, the cabinet door 2 can be opened. When the cabinet door 2 is opened, the interlocking plate 31 drives the two sets of linkage arms 71 on the right to move to the left. When the linkage arm 71 moves to the left, it can rotate through the shaft connected to the interlocking plate 31. The end of the linkage arm 71 extending into the sliding chamber 42 is driven by the interlocking plate 31 to move along the arcuate slide groove 43 through the limit slide post 73. When the door 2 is opened, the locking pin 61 is locked and the locking ring 62 is locked. When the door 2 is opened, the locking pin 61 is locked and the locking ring 62 is locked. When the door 2 is opened, the locking pin 61 is locked and the locking ring 62 is locked. When the door 2 is opened, the locking pin 61 is locked and the locking ring 62 is locked. When the door 2 is opened, the locking pin 61 is locked and the locking ring 62 is locked. When the door 2 is opened, the locking pin 61 is locked and the locking ring 62 is locked.
[0030] Specifically, Figures 2 to 5 As shown, a second interlocking component 7 is provided on the right side of the interlocking plate 31, and the second interlocking component 7 includes two groups of interlocking arms 71 movably mounted on the upper and lower ends of the right side of the interlocking plate 31, and a shaft is provided at the connection between the interlocking arm 71 and the interlocking plate 31, and a bite block 72 is fixedly installed on the right side of the interlocking arm 71 in the direction of the grounding switch main shaft 5, and a limit slide post 73 is fixedly installed at the front and rear ends of the right side of the interlocking arm 71. The right end of the interlocking arm 71 extends into the sliding chamber 42, and the limit slide post 73 is clamped in the arc-shaped sliding groove 43. The movement trajectory of the right end of the interlocking arm 71 is limited by the limit slide post 73 and the arc-shaped sliding groove 43, and the side of the bite block 72 close to the grounding switch main shaft 5 is arc-shaped and is provided with a tooth pattern that is clamped with the grounding switch main shaft 5. After the right end of the interlocking arm 71 moves through the limit slide post 73 and the arc-shaped sliding groove 43, the bite block 72 can contact the grounding switch main shaft 5.
[0031] By adopting the above technical scheme, the existing interlocking devices used in cabinets 1 such as KYN cabinets and power distribution cabinets are usually composed of more mechanical structures, and the purpose of interlocking is achieved through linkage. However, the more complex the mechanical structure, the more likely it is to fail after long-term use. The deviation in the transmission accuracy of any transmission component inside the device may cause the chain reaction to fail. The structure of the device is simple. When the cabinet door 2 is closed during use, the two sets of lock blocks 34 inside the lock groove 32 and the lock ring 62 installed on the lock column 61 are clamped between the lock ring 62 and the connecting column 6, thereby completing the locking of the cabinet door 2. When the cabinet door 2 is locked, the grounding switch main The shaft 5 can be operated. On the contrary, when the cabinet door 2 is opened, the interlocking plate 31 will move to the left with the cabinet door 2. When the interlocking plate 31 moves, it will drive the interlocking arm 71 to move to the left. When the interlocking arm 71 moves, the structure at the right end of the interlocking arm 71 located in the sliding chamber 42 will also move accordingly, and finally the grounding switch main shaft 5 is engaged by the engaging block 72 so that the grounding switch main shaft 5 cannot operate. The grounding switch main shaft 5 cannot operate when the cabinet door 2 is opened. Through the design of the above structure, while achieving the purpose of interlocking, the overall structure is simple, the transmission of mechanical parts is reduced, the possibility of failure of interlocking parts is reduced, and it also helps to save production costs.
[0032] Working principle: When the cabinet door 2 is in the closed state, the grounding switch main shaft 5 is operated, and the grounding switch main shaft 5 drives the connecting column 6 to rotate, so that the locking column 61 fixed thereto also rotates. When the locking block 34 is in overlap with the notch 63, the cabinet door 2 can be opened at this time. After the cabinet door 2 is opened, the interlocking plate 31 moves to the left with the cabinet door 2. During the movement of the interlocking plate 31, the linkage arm 71 is pulled. When the linkage arm 71 is pulled, its right end moves along the arc-shaped slide groove 43 in the sliding chamber 42, and finally the bite block 72 bites the grounding switch When the cabinet door 2 is closed, the right end of the linkage arm 71 is reset in the sliding chamber 42 along the arc-shaped sliding groove 43, and the grounding switch main shaft 5 is no longer restricted. When the cabinet door 2 is closed, the locking column 61 will extend into the locking groove 32, and when the locking block 34 is squeezed by the locking ring 62, it will move into the contraction chamber 33. When the locking ring 62 passes over the locking block 34, the locking block 34 is reset due to the spring 35, and then stuck between the locking ring 62 and the connecting column 6 to complete the locking of the cabinet door 2, and the cabinet door 2 cannot be opened.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A KYN cabinet five-protection interlocking device, comprising a cabinet body (1) and a cabinet door (2), characterized in that: A cabinet door (2) is movably mounted on the left side of the cabinet body (1), a first interlocking component (3) is arranged on the right side of the cabinet door (2), an auxiliary component (4) is arranged at the rear end inside the cabinet body (1), a grounding switch main shaft (5) is movably mounted inside the auxiliary component (4), a connecting column (6) is fixedly mounted on the left side of the grounding switch main shaft (5), and the other end of the connecting column (6) is inserted into the first interlocking component (3); The first interlocking component (3) comprises an interlocking plate (31) fixedly mounted on the right side of the cabinet door (2), a locking groove (32) being provided inside the interlocking plate (31), a locking column (61) being fixedly mounted on the left side of the connecting column (6), a locking ring (62) being fixedly mounted on the left side surface of the locking column (61), and a left end of the locking column (61) being located in the locking groove (32).
2. A KYN cabinet five-protection interlocking device according to claim 1, characterized in that: The inner walls of the upper and lower ends of the locking groove (32) are provided with a contraction chamber (33), a locking block (34) is movably installed inside the contraction chamber (33), a spring (35) is fixedly installed inside the contraction chamber (33), and notches (63) are provided at the front and rear ends of the locking ring (62).
3. A KYN cabinet five-protection interlocking device according to claim 2, characterized in that: After the locking column (61) is inserted into the locking groove (32), the two groups of locking blocks (34) are stuck in the gap between the locking ring (62) and the connecting column (6), and the width of the locking blocks (34) is smaller than the width of the notch (63).
4. A KYN cabinet five-protection interlocking device according to claim 1, characterized in that: The auxiliary component (4) comprises a support plate (41) fixedly mounted at the rear end of the cabinet (1), a groove penetrating the main shaft (5) of the grounding switch is provided in the middle of the support plate (41), a group of sliding chambers (42) are provided at the upper and lower ends of the groove inside the support plate (41), and symmetrical arc-shaped sliding grooves (43) are provided on the inner walls of the front and rear ends of the sliding chambers (42).
5. A KYN cabinet five-protection interlocking device according to claim 4, characterized in that: The arc-shaped sliding grooves (43) provided in the two groups of sliding chambers (42) are both inclined toward the direction of the groove provided in the support plate (41).
6. A KYN cabinet five-protection interlocking device according to claim 1, characterized in that: A second interlocking component (7) is arranged on the right side of the interlocking plate (31), and the second interlocking component (7) comprises two groups of interlocking arms (71) movably mounted on the upper and lower ends of the right side of the interlocking plate (31), and a shaft is arranged at the connection between the interlocking arm (71) and the interlocking plate (31), and a bite block (72) is fixedly mounted on the right side of the interlocking arm (71) in the direction of the main shaft (5) of the grounding switch, and a limit sliding column (73) is fixedly mounted at the front and rear ends of the right side of the interlocking arm (71).
7. A KYN cabinet five-protection interlocking device according to claim 6, characterized in that: The right end of the linkage arm (71) extends into the sliding chamber (42), the limiting sliding column (73) is clamped in the arc-shaped sliding groove (43), and the movement track of the right end of the linkage arm (71) is limited by the limiting sliding column (73) and the arc-shaped sliding groove (43).
8. A KYN cabinet five-protection interlocking device according to claim 6, characterized in that: The side of the bite block (72) close to the grounding switch main shaft (5) is arc-shaped and is provided with a tooth pattern for engaging with the grounding switch main shaft (5). After the right end of the linkage arm (71) moves through the limit slide column (73) and the arc-shaped slide groove (43), the bite block (72) can contact the grounding switch main shaft (5).