Secondary interlocking mechanism

Abstract

The utility model discloses a secondary interlocking mechanism which comprises a switch cabinet side plate, the top of the switch cabinet side plate is fixedly connected with a switch cabinet top plate, the bottom of the switch cabinet top plate is fixedly provided with a fixing strip, the bottom of the fixing strip is fixedly provided with a mounting seat, and a limiting plate is slidably connected between the mounting seat and the switch cabinet top plate. And a rotating shaft is rotationally connected into the mounting base, a first limiting block and a second limiting block are fixedly connected to the surface of the rotating shaft, and the first limiting block and the second limiting block abut against the bottom surface of the limiting plate. According to the structural design of the utility model, the first contact plate and the second contact plate respectively abut against the first limiting block and the second limiting block, so that the double-locking function of the secondary interlocking mechanism is realized, the secondary interlocking mechanism can be effectively ensured to be used under long-time repeated high-strength conditions, and the service life of the secondary interlocking mechanism is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of interlocking mechanisms, in particular to a secondary interlocking mechanism. Background Art

[0002] The secondary interlock mechanism is a safety device used in the switch cabinet to connect the secondary control circuit of the movable functional trolley with the control connection circuit of the switch cabinet instrument room. When the functional trolley is in the test position, the secondary control circuit is required to be connected or disconnected. When the functional trolley enters the working position from the test position, the secondary control circuit is required to be locked and not allowed to be disconnected to meet the safety and reliability requirements of power supply.

[0003] The design of the secondary interlocking device currently on the market is relatively simple. Under long-term repeated operation, cracks are likely to appear in the locking device, resulting in the secondary interlocking device being unable to achieve locking limit, thereby reducing the service life of the secondary interlocking mechanism. Summary of the invention

[0004] The purpose of the utility model is to provide a secondary interlocking mechanism to solve the problem that the design of the secondary interlocking device on the existing market is relatively simple, and after long-term repeated operation, cracks are likely to appear in the locking device, resulting in the secondary interlocking device being unable to achieve the locking limit, thereby reducing the service life of the secondary interlocking mechanism.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a secondary interlocking mechanism, including a switch cabinet side panel, the top of the switch cabinet side panel is fixedly connected to the switch cabinet top panel, the bottom of the switch cabinet top panel is fixedly installed with a fixing bar, the bottom of the fixing bar is fixedly installed with a mounting seat, a limiting plate is slidably connected between the mounting seat and the switch cabinet top panel, a rotating shaft is rotatably connected in the mounting seat, and the surface of the rotating shaft is respectively fixedly connected with a first limit block and a second limit block, and the first limit block and the second limit block are respectively abutted against the bottom surface of the limit plate.

[0006] Preferably, the limit plate includes a sliding plate, an operating plate, a first contact plate and a second contact plate. The sliding plate is slidably connected between the mounting seat and the top plate of the switch cabinet. The top of the sliding plate is fixedly connected to the operating plate. The first contact plate and the second contact plate are respectively fixedly connected on both sides of the sliding plate.

[0007] Preferably, the first contact plate and the second contact plate are respectively abutted against the first limit block and the second limit block.

[0008] Preferably, a movable opening is provided on the surface of the top plate of the switch cabinet, and an operating panel is movably connected in the movable opening.

[0009] Preferably, a limit frame is fixedly installed on the side plate of the switch cabinet, a limit opening is provided on the surface of the limit frame close to the rotating shaft, and the rotating shaft is rotatably connected in the limit opening.

[0010] Beneficial Effects

[0011] Compared with the existing technology, the beneficial effects of the utility model are:

[0012] Through the structural design of the utility model, the first contact plate and the second contact plate are respectively abutted against the first limit block and the second limit block, thereby realizing the double locking function of the secondary interlocking mechanism, which can effectively ensure the use under long-term repeated high-intensity conditions, thereby improving the service life of the secondary interlocking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the matching structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the connecting plate structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the rotating shaft structure of the utility model.

[0017] 1. Switch cabinet side plate; 2. Switch cabinet top plate; 3. Fixing bar; 4. Limiting plate; 5. Rotating shaft; 6. Limiting frame; 7. Mounting seat; 21. Movable opening; 41. First contact plate; 42. Second contact plate; 43. Sliding plate;

[0018] 44. Operation panel; 51. First contact block; 52. Second contact block; 61. Limit opening. DETAILED DESCRIPTION

[0019] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments 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.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore are not to be construed as limiting the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and are not to be construed as indicating or implying relative importance.

[0021] like Figure 1-4 It is a structural schematic diagram of a secondary interlocking mechanism of a preferred embodiment of the utility model. In this embodiment, a secondary interlocking mechanism includes a switch cabinet side plate 1, a switch cabinet top plate 2 is fixedly connected to the top of the switch cabinet side plate 1, and the two are fixed by bolts. A fixing strip 3 is fixedly installed at the bottom of the switch cabinet top plate 2, and a mounting seat 7 is fixedly installed at the bottom of the fixing strip 3. The fixing strip 3 is used to strengthen the connection strength between the mounting seat 7 and the switch cabinet top plate 2. At the same time, a spacing is generated between the mounting seat 7 and the switch cabinet top plate 2, thereby generating a limit plate 4 that can be slidably connected between the mounting seat 7 and the switch cabinet top plate 2. A rotating shaft 5 is rotatably connected in the mounting seat 7, and the surface of the rotating shaft 5 is respectively fixedly connected with a first limit block 51 and a second limit block 52, and the first limit block 51 and the second limit block 52 are respectively abutted against the bottom surface of the limit plate 4, thereby realizing the limiting function. Due to the use of the first limit block 51 and the second limit block 52, the problem of dispersed stress concentration can be solved, thereby improving the service life of the secondary interlocking mechanism, and effectively solving the problems raised in the background technology.

[0022] In this embodiment, the limit plate 4 includes a sliding plate 43, an operating plate 44, a first contact plate 41 and a second contact plate 42. The sliding plate 43 is slidably connected between the mounting seat 7 and the switch cabinet top plate 2, and the operating plate 44 is fixedly connected to the top of the sliding plate 43. The operating plate 44 is operated to realize the sliding function of the sliding plate 43. At the same time, the first contact plate 41 and the second contact plate 42 are fixedly connected to the two sides of the sliding plate 43, respectively, to drive the first contact plate 41 and the second contact plate 42 to achieve displacement, so that the first contact plate 41 and the second contact plate 42 are respectively abutted against the first limit block 51 and the second limit block 52; specifically, in the closed state, the first contact plate 41 and the second contact plate 42 are respectively abutted against the first limit block 51 and the second limit block 52. Similarly, in the open state, the first contact plate 41 and the second contact plate 42 are separated from the first limit block 51 and the second limit block 52.

[0023] In this embodiment, a movable opening 21 is provided on the surface of the switch cabinet top plate 2, and an operating panel 44 is movably connected in the movable opening 21, so that the position of the operating panel 44 can be limited and the interlocking mechanism can be used to remind the operator of the working state.

[0024] In this embodiment, a limit frame 6 is fixedly installed on the side panel 1 of the switch cabinet, and a limit opening 61 is provided on the surface of the limit frame 6 close to the rotating shaft 5, and the rotating shaft 5 is rotatably connected in the limit opening 61. This structural design improves the position stability of the rotating shaft 5 during transmission and prevents shaking.

[0025] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A secondary interlocking mechanism, comprising a switch cabinet side plate (1), wherein the top of the switch cabinet side plate (1) is fixedly connected to a switch cabinet top plate (2), characterized in that: A fixing strip (3) is fixedly mounted on the bottom of the switch cabinet top plate (2), a mounting seat (7) is fixedly mounted on the bottom of the fixing strip (3), a limit plate (4) is slidably connected between the mounting seat (7) and the switch cabinet top plate (2), a rotating shaft (5) is rotatably connected inside the mounting seat (7), a first limit block (51) and a second limit block (52) are respectively fixedly connected to the surface of the rotating shaft (5), and the first limit block (51) and the second limit block (52) are respectively abutted against the bottom surface of the limit plate (4).

2. A secondary interlocking mechanism according to claim 1, characterized in that: The limit plate (4) comprises a sliding plate (43), an operating plate (44), a first contact plate (41) and a second contact plate (42); the sliding plate (43) is slidably connected between the mounting seat (7) and the switch cabinet top plate (2); the top of the sliding plate (43) is fixedly connected to the operating plate (44); and the first contact plate (41) and the second contact plate (42) are fixedly connected to both sides of the sliding plate (43).

3. A secondary interlocking mechanism according to claim 2, characterized in that: The first contact plate (41) and the second contact plate (42) are respectively abutted against the first limit block (51) and the second limit block (52).

4. A secondary interlocking mechanism according to claim 1, characterized in that: A movable opening (21) is provided on the surface of the switch cabinet top plate (2), and an operating panel (44) is movably connected inside the movable opening (21).

5. The secondary interlocking mechanism according to claim 1, characterized in that: The switch cabinet side plate (1) is fixedly mounted with a limit frame (6), a limit opening (61) is provided on a surface of the limit frame (6) close to the rotating shaft (5), and the rotating shaft (5) is rotatably connected in the limit opening (61).

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