Knife switch limiting device of photovoltaic grid-connected cabinet

Abstract

The utility model relates to the technical field of photovoltaic grid-connected cabinets, and discloses a photovoltaic grid-connected cabinet disconnecting link limiting device which comprises a fixing seat, one end of the fixing seat is connected with a gear frame through a screw, a gear assembly is arranged on the inner side of the gear frame, one end of the gear frame is provided with a movable limiting block, and the other end of the gear frame is provided with a limiting block. According to the photovoltaic grid-connected cabinet knife switch limiting device, an adjustable connecting rod pushing shaft of the adjusting mechanism is pushed according to specification parameters of a knife switch, then an adjusting block is driven to rotate, a rotating rod connected with the adjusting block is driven to rotate, a first bevel wheel connected with the rotating rod is driven to rotate, and the knife switch is driven to rotate. The position of the movable limiting block is adjusted through the movable cone pulley, so that the movable limiting block is matched with the switching-on position of the knife switch, the switching-on stroke of the knife switch is limited, the displacement deviation of the knife switch is effectively limited, and the switching-on stability is ensured.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic grid-connected cabinet technology, specifically a photovoltaic grid-connected cabinet knife switch limit device. Background Technology

[0002] A photovoltaic grid-connected cabinet is a specialized power equipment primarily used for grid connection of electricity in solar power generation systems. It consists of a knife switch, circuit breaker, and related control components, connecting the generator system and the power grid system. Equipped with comprehensive grid-connection protection devices, it functions as a generator grid-connector. In photovoltaic grid-connected systems, the knife switch plays a crucial role in on / off control.

[0003] However, current photovoltaic grid-connected cabinet knife switches often have problems with inaccurate and unstable closing positions during the closing process, which may lead to poor electrical connections, overheating, or even safety accidents. Therefore, a limit device for photovoltaic grid-connected cabinet knife switches is needed. Utility Model Content

[0004] The purpose of this utility model is to provide a limit device for the knife switch of a photovoltaic grid-connected cabinet, so as to solve the problem mentioned in the background art that the current photovoltaic grid-connected cabinet knife switch often has inaccurate and unstable closing position during the closing process, which may lead to poor electrical connection, overheating, or even safety accidents.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a photovoltaic grid-connected cabinet knife switch limit device, including a fixed base, a gear frame screwed to one end of the fixed base, a gear assembly provided on the inner side of the gear frame, a movable limit block provided at one end of the gear frame, and an adjustment mechanism provided at the other end of the gear assembly.

[0006] Preferably, the gear assembly includes a movable bevel gear, one end of which meshes with a first bevel gear.

[0007] Preferably, the movable cone wheel is rotatably connected to the inner side of the gear frame, and a rotating rod is fixedly connected to the middle of the first cone wheel.

[0008] Preferably, the adjustment mechanism includes an adjustment block, a shaft is rotatably connected to the middle of the adjustment block, and an adjustable connecting rod is fixedly connected to one end of the shaft.

[0009] Preferably, one end of the rotating rod at one end of the adjusting block is fixedly connected.

[0010] Preferably, one end of the movable limiting block is connected to one end of the movable cone wheel.

[0011] Preferably, one end of the fixing base is fixedly connected to an outer sleeve, and the outside of the fixing base is provided with multiple threaded holes.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0013] First, this utility model consists of a fixed base assembly, a gear transmission system, and an adjustable limiting mechanism. The fixed base assembly includes a high-strength alloy cast fixed base and a precision gear frame connected by anti-loosening screws. The gear frame integrates hardened gear components and adopts a two-stage reduction design, including a mechanical transmission chain formed by a moving conical wheel, a first conical wheel, and a rotating rod. The actuator consists of a movable limiting block and a multi-functional adjustment mechanism containing a precision adjusting block, an anti-slip rotating shaft, and an adjustable connecting rod. The fixed base is fixed to a preset installation position inside the photovoltaic grid-connected cabinet by bolts, ensuring its alignment with the cabinet. The body structure fits tightly without any looseness. Then, according to the specifications of the knife switch, the adjustable linkage of the adjustment mechanism is pushed to drive the shaft, which in turn drives the adjustment block to rotate. This, in turn, drives the rotating rod connected to the adjustment block to rotate, which in turn drives the first conical wheel connected to the rotating rod to rotate. This causes the moving conical wheel, which meshes with the first conical wheel, to rotate. The moving conical wheel adjusts the position of the movable limit block to match the closing position of the knife switch, so as to adapt to different specifications of knife switches and installation requirements. This limits the closing stroke of the knife switch, effectively limits the displacement deviation of the knife switch, and ensures the stability of closing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a top view of the structure of this utility model;

[0016] Figure 3 This is a side view of the structure of this utility model.

[0017] The components are: 1. Fixed base; 11. Gear frame; 12. Gear assembly; 13. Moving cone wheel; 14. First cone wheel; 15. Rotating rod; 2. Movable limit block; 3. Adjustment mechanism; 31. Adjustment block; 32. Shaft; 33. Adjustable connecting rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This utility model provides the following technical solution:

[0020] Example 1

[0021] Please see Figure 1 , Figure 2 , Figure 3 A photovoltaic grid-connected cabinet knife switch limit device includes a fixed base 1, a gear frame 11 is screwed to one end of the fixed base 1, a gear assembly 12 is provided on the inner side of the gear frame 11, a movable limit block 2 is provided at one end of the gear frame 11, and an adjustment mechanism 3 is provided at the other end of the gear assembly 12.

[0022] The above technical solution comprises a fixed base assembly, a gear transmission system, and an adjustable limiting mechanism. The fixed base assembly includes a high-strength alloy cast fixed base 1 and a precision gear frame 11 connected by anti-loosening screws. The gear frame 11 integrates a hardened gear assembly 12, employing a two-stage reduction design. It includes a mechanical transmission chain formed by a moving conical wheel 13, a first conical wheel 14, and a rotating rod 15. The actuator consists of a movable limiting block 2 and a multi-functional adjusting mechanism 3 containing a precision adjusting block 31, an anti-slip rotating shaft 32, and an adjustable connecting rod 33. The fixed base 1 is bolted to a pre-set installation position within the photovoltaic grid-connected cabinet, ensuring its alignment with the cabinet. The body structure fits tightly without any looseness. Then, according to the specifications of the knife switch, the adjustable connecting rod 33 of the adjusting mechanism 3 is pushed to drive the shaft 32, which in turn drives the adjusting block 31 to rotate. This, in turn, drives the rotating rod 15 connected to the adjusting block 31 to rotate, which in turn drives the first conical wheel 14 connected to the rotating rod 15 to rotate. This causes the moving conical wheel 13, which meshes with the first conical wheel 14, to rotate. The moving conical wheel 13 adjusts the position of the movable limit block 2 to match the closing position of the knife switch, so as to adapt to different specifications of knife switches and installation requirements. This limits the closing stroke of the knife switch, effectively limits the displacement deviation of the knife switch, and ensures the closing stability.

[0023] Specifically, the gear assembly 12 includes a moving bevel gear 13, one end of which is engaged with a first bevel gear 14.

[0024] Through the above technical solution, the rotational motion is transmitted to the first cone wheel 14 through the adjustment mechanism 3. The rotational transmission of the first cone wheel 14 drives the cone wheel 13 to rotate, thereby adapting to the stroke requirements of different specifications of knife switches, improving the smoothness and efficiency of transmission, reducing energy loss, and ensuring the accuracy of limit action.

[0025] Specifically, the movable cone wheel 13 is rotatably connected to the inner side of the gear frame 11, and the rotating rod 15 is fixedly connected to the middle of the first cone wheel 14.

[0026] Through the above technical solution, the moving cone wheel 13 is rotatably connected to the inner side of the gear frame 11 to ensure its rotational freedom. The rotating rod 15 in the middle of the first cone wheel 14 transmits the rotational motion of the adjustment mechanism 3 to the first cone wheel 14. The rotating rod 15 serves as a transmission hub, connecting the gear assembly 12 and the adjustment mechanism 3. The rigid transmission ensures the synchronization of the action and avoids the limit error caused by the transmission gap.

[0027] Specifically, the adjustment mechanism 3 includes an adjustment block 31, a shaft 32 is rotatably connected to the middle of the adjustment block 31, and an adjustable connecting rod 33 is fixedly connected to one end of the shaft 32.

[0028] Through the above technical solution, the adjustable connecting rod 33 drives the shaft 32 to push the adjusting block 31, thereby driving the rotation of the rotating rod 15 and adjusting the position of the movable limit block 2.

[0029] Specifically, one end of the adjusting block 31 is fixedly connected to one end of the rotating rod 15.

[0030] Through the above technical solution, by connecting the adjusting block 31 to the rotating rod 15, the rotating block 31 rotates, thereby driving the rotating rod 15 to rotate, which in turn drives the gear assembly 12 to work.

[0031] Specifically, one end of the movable limit block 2 is connected to one end of the movable cone wheel 13.

[0032] Through the above technical solution, the rotation of the moving cone wheel 13 can drive the movable limit block 2 to adjust its position.

[0033] Specifically, one end of the fixing base 1 is fixedly connected to an outer sleeve, and the outside of the fixing base 1 has multiple threaded holes.

[0034] The above technical solution allows the mounting base 1 to be easily installed inside the photovoltaic grid-connected cabinet through the multiple threaded holes.

[0035] In use, the mounting base 1 is fixed to the preset installation position inside the photovoltaic grid-connected cabinet with bolts, ensuring that it fits tightly with the cabinet structure without any looseness. Then, according to the specifications of the knife switch, the adjustable connecting rod 33 of the adjusting mechanism 3 is pushed to drive the shaft 32, which in turn drives the adjusting block 31 to rotate. This, in turn, drives the rotating rod 15 connected to the adjusting block 31 to rotate, which in turn drives the first conical wheel 14 connected to the rotating rod 15 to rotate. This causes the moving conical wheel 13, which meshes with the first conical wheel 14, to rotate. The moving conical wheel 13 then adjusts the position of the movable limit block 2 to match the closing position of the knife switch, adapting to different specifications of knife switches and installation requirements. This limits the closing stroke of the knife switch, effectively restricts the displacement deviation of the knife switch, and ensures the stability of the closing.

[0036] Although 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 alterations may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A limit device for a photovoltaic grid-connected switchgear, characterized in that, It includes a fixed base (1), one end of which is screwed to a gear frame (11), a gear assembly (12) is provided on the inner side of the gear frame (11), a movable limiting block (2) is provided on one end of the gear frame (11), and an adjustment mechanism (3) is provided on the other end of the gear assembly (12).

2. The photovoltaic grid-connected cabinet disconnector limit device according to claim 1, characterized in that: The gear assembly (12) includes a moving bevel gear (13), one end of which is engaged with a first bevel gear (14).

3. The photovoltaic grid-connected cabinet disconnector limit device according to claim 2, characterized in that: The moving cone wheel (13) is rotatably connected to the inner side of the gear frame (11), and the first cone wheel (14) is fixedly connected to the middle of the rotating rod (15).

4. The photovoltaic grid-connected cabinet disconnector limit device according to claim 1, characterized in that: The adjustment mechanism (3) includes an adjustment block (31), a shaft (32) is rotatably connected to the middle of the adjustment block (31), and an adjustable connecting rod (33) is fixedly connected to one end of the shaft (32).

5. The photovoltaic grid-connected cabinet disconnector limit device according to claim 4, characterized in that: One end of the adjusting block (31) is fixedly connected to one end of the rotating rod (15).

6. The photovoltaic grid-connected cabinet disconnector limit device according to claim 1, characterized in that: One end of the movable limiting block (2) is connected to one end of the movable cone wheel (13).

7. The photovoltaic grid-connected cabinet disconnector limit device according to claim 1, characterized in that: One end of the fixing base (1) is fixedly connected to an outer sleeve, and the outside of the fixing base (1) is provided with multiple threaded holes.

Images