Interlocking structure between isolation mechanism program lock and switch cabinet

Abstract

The utility model discloses an interlocking structure between an isolation mechanism program lock and a switch cabinet, a support plate is provided with a lock assembly and a travel switch, the lock assembly comprises a lock body, a lock rod and a key, the lock rod is movably arranged in the lock body, and the key is connected to a lock hole of the lock body in a pluggable manner; a connecting structure matched with the key is arranged on the lock rod, after the key is inserted into the lock body, the inner end of the key is matched with the connecting structure of the lock rod, and the lock rod can be driven to move towards or away from the operating shaft by rotating the key; one end of the lock rod is connected with an interlocking plate; a shielding part is arranged on the interlocking plate; in a switching-on state, the shielding part of the interlocking plate is moved away and does not shield the operation shaft, and the lock rod is pressed on the operation rod of the travel switch; in an opening state, the shielding part of the interlocking plate moves to shield the operation shaft, and the lock rod loosens the operation rod of the travel switch. The electronic lock is simple in structure, meets the requirement for sequential unlocking operation, avoids misoperation, and improves reliability and safety of a system.

Description

Technical Field

[0001] The utility model relates to the technical field of switch devices, in particular to an interlocking structure between a program lock of an isolation mechanism and a switch cabinet. Background Art

[0002] High-voltage disconnectors are important switching devices in electrical systems and must be used in conjunction with high-voltage circuit breakers. They are designed to ensure the safety of high-voltage electrical equipment and devices during maintenance and repair, by isolating the voltage.

[0003] In order to achieve the requirement of sequential unlocking operation, setting a program lock in the isolating switch mechanism is one of the more commonly used anti-error locking methods. The program lock of the existing isolation mechanism has the possibility of misoperation, is not reliable, and affects the safety of the system. Utility Model Content

[0004] In view of the shortcomings of the program lock of the above-mentioned existing isolation mechanism, the applicant provides a rationally structured interlocking structure between the program lock of the isolation mechanism and the switch cabinet to avoid misoperation and improve reliability and system safety.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A program lock of an isolation mechanism, wherein a lock assembly and a travel switch are provided on a support plate, the lock assembly includes a lock body, a lock rod and a key, the lock rod is movably provided in the lock body, and the key is pluggably connected to the lock hole of the lock body; a connecting structure cooperating with the key is provided on the lock rod, and after the key is inserted into the lock body, the inner end portion of the key cooperates with the connecting structure of the lock rod, and rotating the key can drive the lock rod to move toward or away from the operating shaft; an interlock plate is connected to one end of the lock rod, and the travel switch and the interlock plate are arranged on opposite sides of the lock assembly, and the interlock plate faces the operating shaft; a shielding part is provided on the interlock plate; when in the closed state, the shielding part of the interlock plate moves away and does not block the operating shaft, and the lock rod presses on the operating rod of the travel switch; when in the open state, the shielding part of the interlock plate moves to block the operating shaft, and the lock rod releases the operating rod of the travel switch.

[0007] As a further improvement of the above technical solution:

[0008] A limit plate portion is provided on the interlocking plate, and a crank arm is correspondingly provided on the operating shaft, and the limit plate portion cooperates with the crank arm; when the switch is in the closed state, the crank arm blocks the front of the limit plate portion, blocking the moving path of the interlocking plate; when the switch is in the open state, the crank arm gives way to the moving path of the interlocking plate.

[0009] A locking structure is provided in the lock body corresponding to the key. The locking structure locks the key in one of the states of closing and opening the switch, and unlocks the key in the other state.

[0010] The interlocking plate is connected to the locking rod through the connecting plate portion, the limiting plate portion and the shielding portion extend forward from the connecting plate portion toward the operating shaft, and the limiting plate portion and the shielding portion are spaced apart.

[0011] The connecting plate portion and the limiting plate portion are both parallel to the axial direction of the operating shaft, and the shielding portion is perpendicular to the axial direction of the operating shaft.

[0012] The connecting plate portion, the limiting plate portion and the shielding plate portion of the interlocking plate are integrally formed; or the connecting plate portion and the limiting plate portion of the interlocking plate are integrally formed, and the shielding plate is fixedly connected to the connecting plate portion.

[0013] At least one set of program locks is provided on the isolation mechanism corresponding to the isolation operating shaft and / or the grounding operating shaft, and crank arms are provided on the isolation operating shaft and the grounding operating shaft corresponding to each set of program locks.

[0014] The keys of each set of program locks are only applicable to the lock components of this set, and each set of program locks can only be operated with the keys of this set.

[0015] An interlocking structure between switch cabinets, wherein at least one set of program locks is provided on the isolation mechanism of each switch cabinet corresponding to the isolation operating axis and / or the grounding operating axis, wherein the program locks corresponding to the isolation operating axis of some switch cabinets are identical program locks and are equipped with the same keys, and the number of identical program locks is greater than the number of equipped keys.

[0016] As a further improvement of the above technical solution:

[0017] The program locks corresponding to the isolation operating shafts of some switch cabinets and the program locks corresponding to the grounding operating shafts of other switch cabinets are the same program locks and are equipped with the same keys. The number of the same program locks is greater than the number of equipped keys.

[0018] The beneficial effects of the utility model are as follows:

[0019] The utility model has a simple structure, meets the requirements of sequential unlocking operations, avoids misoperation, and improves reliability and system safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the isolation mechanism of the utility model in the isolation open and grounding closed states.

[0021] Figure 2 It is a schematic diagram of the isolation mechanism of the utility model in the isolation closed state and the grounding open state.

[0022] Figure 3 Schematic diagram of the structure of the first interlocking plate.

[0023] Figure 4 Schematic diagram of the structure of the second interlocking plate.

[0024] Figure 5 It is a structural schematic diagram of the third interlocking plate.

[0025] Figure 6 This is a schematic diagram of the utility model applied to a switch cabinet.

[0026] In the picture:

[0027] 10. Mounting plate; 20. Isolation operating shaft; 30. Grounding operating shaft; 40. First program lock; 50. Second program lock; 60. Third program lock; 70. First crank arm; 80. Second crank arm; 90. Third crank arm;

[0028] 1. Support plate; 2. Lock assembly; 21. Lock body; 22. Lock rod; 23. Key; 23-1. Key 1; 23-2. Key 2; 23-3. Key 3; 3. Travel switch; 31. Operating lever; 4. Interlock plate; 4-1. First interlock plate; 4-2. Second interlock plate; 4-3. Third interlock plate; 41. Connecting plate; 42. Limit plate; 43. Shielding plate; 44. Baffle;

[0029] 100, first switchgear; 20-1, first isolation operating shaft; 30-1, first grounding operating shaft;

[0030] 200, second switch cabinet; 20-2, second isolation operating shaft; 30-2, second grounding operating shaft;

[0031] 300, third switchgear; 20-3, third isolation operating shaft; 30-3, third grounding operating shaft;

[0032] 400, fourth switchgear; 20-4, fourth isolation operating shaft; 30-4, fourth grounding operating shaft. DETAILED DESCRIPTION

[0033] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0034] like Figure 1 、 Figure 2 As shown, the mounting plate 10 of the isolation mechanism of the present invention is provided with an isolation operating shaft 20 and a grounding operating shaft 30. At least one set of program locks is provided on the mounting plate 10 corresponding to the isolation operating shaft 20 and the grounding operating shaft 30. In this embodiment, a first program lock 40 and a second program lock 50 are provided corresponding to the isolation operating shaft 20. A first crank arm 70 and a second crank arm 80 are provided on the isolation operating shaft 20 corresponding to the first program lock 40 and the second program lock 50, respectively. A third program lock 60 is provided corresponding to the grounding operating shaft 30, and a third crank arm 90 is provided on the grounding operating shaft 30 corresponding to the third program lock 60.

[0035] Each program lock assembly includes a support plate 1, a lock assembly 2, a travel switch 3, and an interlock plate 4. The lock assembly 2 and travel switch 3 are fixed to the support plate 1, which is fixed to the mounting plate 10. The interlock plate 4 is connected to the lock assembly 2. The travel switch 3 and interlock plate 4 are arranged on opposite sides of the lock assembly 2, with the interlock plate 4 facing the isolation operating shaft 20 or the grounding operating shaft 30.

[0036] The lock assembly 2 includes a lock body 21, a lock rod 22, and a key 23. The lock rod 22 is movably disposed within the lock body 21, and the key 23 is pluggably connected to the lock hole of the lock body 21. After the key 23 is inserted into the lock hole of the lock body 21, it can be rotated within the lock hole to switch between the closed and open states. A locking structure is provided within the lock body 21 corresponding to the key 23. When the key 23 is turned to the closed state, the key 23 is locked by the locking structure, and the key 23 cannot be removed from the lock body 21. When the key 23 is turned to the open state, the locking structure releases the lock on the key 23, and the key 23 can be removed from the lock body 21. Of course, in other embodiments, the key 23 can also be locked in the open state and cannot be removed, and the lock is released in the closed state and can be removed. By adjusting the initial positions of the first, second, and third crank arms 70, 80, and 90 according to customer needs, the key 23 can be removed in any open or closed state. The lock rod 22 is provided with a connection structure that cooperates with the key 23. After the key 23 is inserted into the lock body 21, the inner end of the key 23 is connected to the connection structure of the lock rod 22. When the key 23 is rotated, the key 23 drives the lock rod 22 toward the operating shaft or the limit switch 3 through the connection structure to switch between the closed and open states. In this embodiment, in the closed state, the lock rod 22 moves toward the limit switch 3 and presses on the operating lever 31 of the limit switch 3. The limit switch 3 is closed, a closing indication is given, and the operating shaft can be operated. In the open state, the lock rod 22 moves toward the operating shaft, the lock rod 22 releases the operating lever 31 of the limit switch 3, the limit switch 3 is disconnected, and the operating shaft cannot be operated.

[0037] The lock assembly 2 of each set of program locks on the same isolation mechanism is adapted one-to-one with the key 23 of this set. The key 23 of each set of program locks can only be applied to this set of lock assembly 2 and cannot be applied to other sets of lock assembly 2. That is, each set of lock assembly 2 can only be operated with the key 23 of this set and cannot be operated with the key 23 of other sets, thereby avoiding misoperation and improving reliability and system security.

[0038] like Figures 3 to 5 As shown, the interlocking plate 4 mainly includes a connecting plate portion 41 connected to the locking rod 22, a limiting plate portion 42 matched with the crank arm, and a shielding portion for shielding the operating shaft, the shielding portion is a shielding plate portion 43 ( Figure 3 、 Figure 4 shown) or baffle 44 ( Figure 5 As shown in the figure). Figure 1、 Figure 2 As shown. The limiting plate portion 42 and the shielding portion extend forward from the connecting plate portion 41 toward the direction of the operating shaft, and the limiting plate portion 42 and the shielding portion are spaced apart. The limiting plate portion 42 is correspondingly located on the outside of the crank arm, and the shielding portion is correspondingly located in front of the end of the operating shaft. The connecting plate portion 41 and the limiting plate portion 42 are both parallel to the axial direction of the operating shaft, and the shielding portion is perpendicular to the axial direction of the operating shaft. When in the closed state, the shielding portion of the interlocking plate 4 moves away from the front direction of the operating shaft and does not block the operating shaft, leaving the operating space for the operating shaft. The crank arm rotates to the closed position along with the operating shaft, blocking the front of the limiting plate portion 42 of the interlocking plate 4, blocking the path of the interlocking plate 4 moving toward the operating shaft. When in the open state, the crank arm rotates to the open position along with the operating shaft, leaving the path of the interlocking plate 4 moving toward the operating shaft. The shielding portion moves to the front of the operating shaft, blocking the operating shaft and blocking the operating space for the operating shaft. As shown Figure 3 、 Figure 4 As shown, the interlocking plate 4 is an integrally formed structural member, wherein the connecting plate portion 41, the limiting plate portion 42 and the shielding plate portion 43 are integrally formed. In this embodiment, the first interlocking plate 4-1 and the second interlocking plate 4-1 adopt this integrally formed structure. Figure 5 As shown, the interlocking plate 4 can also be assembled from multiple parts. In this embodiment, the connecting plate portion 41 and the limiting plate portion 42 of the third interlocking plate 4-3 are integrally formed on one part, and the baffle 44 is an independent part fixedly connected to the connecting plate portion 41.

[0039] like Figure 6 As shown, an implementation method of using the program lock of the utility model to realize interlocking between switch cabinets is provided. This embodiment is described using four switch cabinets as an example:

[0040] The first isolation operating shaft 20-1 and the first grounding operating shaft 30-1 are set on the isolation mechanism of the first switch cabinet 100, the second isolation operating shaft 20-2 and the second grounding operating shaft 30-2 are set on the isolation mechanism of the second switch cabinet 200, the third isolation operating shaft 20-3 and the third grounding operating shaft 30-3 are set on the isolation mechanism of the third switch cabinet 300, and the fourth isolation operating shaft 20-4 and the fourth grounding operating shaft 30-4 are set on the isolation mechanism of the fourth switch cabinet 400.

[0041] On the first switch cabinet 100, the second switch cabinet 200, and the fourth switch cabinet 400, a No. 1 program lock is respectively provided corresponding to the isolation operating shaft 20 (the first isolation operating shaft 20-1, the second isolation operating shaft 20-2, and the fourth isolation operating shaft 20-4). The three No. 1 program locks are adapted to two No. 1 keys 23-1, so that the three switch cabinets can realize the two-in-three function (i.e., only two of the three switch cabinets can be closed).

[0042] A No. 2 program lock is provided on the second isolation operating shaft 20-2 of the second switch cabinet 200 and the third grounding operating shaft 30-3 of the third switch cabinet 300, respectively. The two No. 2 program locks are adapted to a No. 2 key 23-2. A No. 3 program lock is provided on the second grounding operating shaft 30-2 of the second switch cabinet 200 and the third isolation operating shaft 20-3 of the third switch cabinet 300, respectively. The two No. 3 program locks are adapted to a No. 3 key 23-3. Through this arrangement, a two-in-one interlocking function of the second switch cabinet 200 and the third switch cabinet 300 can be achieved (i.e., only one of the second switch cabinet 200 and the third switch cabinet 300 can be locked).

[0043] For multiple switch cabinets, the same program lock is set on the isolation operation shaft 20 of the relevant switch cabinets, and the same key 23 is equipped. The number of keys 23 equipped is less than the number of the same program locks, so that the M-in-N function of each switch cabinet can be realized, such as three-in-two, four-in-three, four-in-two, etc.; the same program lock is set on the isolation operation shaft 20 and the grounding operation shaft 30 of the relevant switch cabinets, and the same key 23 is equipped. The number of keys 23 equipped is less than the number of the same program locks, so that the M-in-N interlocking function can be realized, such as two-in-one interlocking, three-in-one interlocking, three-in-two interlocking, etc.

[0044] The above description is an explanation of the present invention, not a limitation of the present invention. The present invention may be modified in any form without violating the spirit of the present invention.

Claims

1. An isolation mechanism program lock, characterized by: A lock assembly (2) and a travel switch (3) are provided on the support plate (1). The lock assembly (2) includes a lock body (21), a lock rod (22) and a key (23). The lock rod (22) is movably provided in the lock body (21), and the key (23) is pluggably connected to the lock hole of the lock body (21). A connecting structure that cooperates with the key (23) is provided on the lock rod (22). After the key (23) is inserted into the lock body (21), the inner end of the key (23) cooperates with the connecting structure of the lock rod (22). The lock rod (22) can be driven by rotating the key (23). Moves toward or away from the operating shaft; one end of the lock rod (22) is connected to an interlocking plate (4), the travel switch (3) and the interlocking plate (4) are arranged on opposite sides of the lock assembly (2), and the interlocking plate (4) faces the operating shaft; a shielding portion is provided on the interlocking plate (4); when in the closed state, the shielding portion of the interlocking plate (4) moves away and does not shield the operating shaft, and the lock rod (22) presses onto the operating rod (31) of the travel switch (3); when in the open state, the shielding portion of the interlocking plate (4) moves to shield the operating shaft, and the lock rod (22) releases the operating rod (31) of the travel switch (3).

2. The isolation mechanism program lock according to claim 1, characterized in that: A limit plate portion (42) is provided on the interlocking plate (4), and a crank arm is correspondingly provided on the operating shaft, and the limit plate portion (42) cooperates with the crank arm; when the switch is in the closed state, the crank arm blocks the front of the limit plate portion (42) to block the moving path of the interlocking plate (4); when the switch is in the open state, the crank arm gives way to the moving path of the interlocking plate (4).

3. The isolation mechanism program lock according to claim 1, characterized in that: A locking structure is provided in the lock body (21) corresponding to the key (23), and the locking structure locks the key (23) in one of the states of closing and opening the switch, and unlocks the key (23) in the other state.

4. The isolation mechanism program lock according to claim 1, characterized in that: The interlocking plate (4) is connected to the locking rod (22) via the connecting plate portion (41), the limiting plate portion (42) and the shielding portion extend forward from the connecting plate portion (41) in the direction of the operating axis, and the limiting plate portion (42) and the shielding portion are spaced apart.

5. The isolation mechanism program lock according to claim 4, characterized in that: The connecting plate portion (41) and the limiting plate portion (42) are both parallel to the axial direction of the operating shaft, and the shielding portion is perpendicular to the axial direction of the operating shaft.

6. The isolation mechanism program lock according to claim 4, characterized in that: The connecting plate portion (41), the limiting plate portion (42), and the shielding plate portion (43) of the interlocking plate (4) are integrally formed; or the connecting plate portion (41) and the limiting plate portion (42) of the interlocking plate (4) are integrally formed, and the shielding plate (44) is fixedly connected to the connecting plate portion (41).

7. The isolation mechanism program lock according to claim 1, characterized in that: At least one set of program locks is provided on the isolation mechanism corresponding to the isolation operating shaft (20) and / or the grounding operating shaft (30), and crank arms are provided on the isolation operating shaft (20) and the grounding operating shaft (30) corresponding to each set of program locks.

8. The isolation mechanism program lock according to claim 7, characterized in that: The key (23) of each set of program locks is only applicable to the lock assembly (2) of this set, and each set of program locks can only be operated using the key (23) of this set.

9. An interlocking structure between switch cabinets, characterized by: At least one set of program locks according to claim 1 is provided on the isolation mechanism of each switch cabinet corresponding to the isolation operation shaft (20) and / or the grounding operation shaft (30), wherein the program locks corresponding to the isolation operation shaft (20) of some switch cabinets are identical program locks and are equipped with the same key (23), and the number of identical program locks is greater than the number of equipped keys (23).

10. The interlocking structure between switch cabinets according to claim 9, characterized in that: The program locks corresponding to the isolation operating shaft (20) of some switch cabinets and the program locks corresponding to the grounding operating shaft (30) of other switch cabinets are the same program locks and are equipped with the same key (23). The number of the same program locks is greater than the number of equipped keys (23).

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