Novel drop-out fuse

Abstract

The utility model discloses a novel drop-out fuse, which belongs to the field of drop-out fuses and comprises a high-strength insulator, the upper end of the high-strength insulator is provided with an upper wiring terminal, the lower end of the high-strength insulator is connected with a lower wiring terminal, the upper wiring terminal is provided with a connecting buckle, and the lower wiring terminal is connected with a rotary connecting frame. Through the installation structure, the installation plate is installed on the fixing frame through the rotating seat, rotation adjustment can be carried out when needed, the use flexibility of the whole drop-out fuse is improved, the inserting groove is formed in the rotating seat and used in cooperation with the limiting inserting rod, angle adjustment of the drop-out fuse can be carried out according to a specific angle, and the safety of the drop-out fuse is improved. And the hexagonal block at the end part of the limiting insertion rod is connected with the threaded seat through the threaded groove, so that the connection stability of the limiting insertion rod can be ensured, and the looseness of the drop-out fuse caused by the falling of the limiting insertion rod is avoided.

Description

Technical Field

[0001] The utility model relates to the field of drop-out fuses, in particular to a novel drop-out fuse. Background Art

[0002] The drop-out fuse is the main protection switch used for distribution line maintenance and distribution transformers. The drop-out fuse is installed on the branch line of the 10kV distribution line to reduce the scope of power outage. Because it has an obvious disconnection point and has the function of an isolating switch, it creates a safe working environment for the maintenance section lines and equipment. The drop-out fuse is installed on the distribution transformer and can be used as the main protection of the distribution transformer.

[0003] When in use, the existing drop-out fuse is installed on the pole support or distribution transformer using a fixing plate, and the circuit is switched on and off by closing and opening the fuse tube, while the fuse tube plays a role in protecting the circuit. However, in the existing drop-out fuse, the fixing plate is fixedly connected to the high-strength insulator. After the entire drop-out fuse is installed using the fixing plate, the angle of the entire drop-out fuse cannot be adjusted. If the angle needs to be adjusted, it can only be solved by working on the mounting frame or the distribution transformer, resulting in poor convenience in operation. Some fixing plates are connected to the high-strength insulator using a movable and adjustable connection method. Although the angle adjustment effect can be achieved, the stability is poor after adjustment, and it is easy to loosen, and the use effect is average. Utility Model Content

[0004] The main purpose of the utility model is to provide a novel drop-out fuse, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A novel drop-out fuse comprises a high-strength insulator, wherein an upper terminal is provided at the upper end of the high-strength insulator, and a lower terminal is connected to the lower end of the high-strength insulator, a connecting buckle is provided on the upper terminal, a rotating connecting frame is connected to the lower terminal, and a fuse tube is provided on the rotating connecting frame, a mounting structure is installed on the high-strength insulator through the connecting structure, and the mounting structure comprises a fixing frame, a circular hole, a mounting plate and a rotating seat, the circular hole is opened on the fixing frame, the mounting plate is fixedly connected to the rotating seat, and the rotating seat is connected to the fixing frame.

[0007] Preferably, the lower end of the fuse tube is rotatably connected to the rotating connecting frame, and the upper end of the fuse tube is provided with a clamping joint adapted to the connecting buckle, and the upper end of the fuse tube is provided with a control ring.

[0008] Preferably, the connection structure includes a first jacket, a second jacket, a connecting plate and mounting bolts, the first jacket and the second jacket are sleeved on the high-strength insulator, the connecting plate is installed at the ends of the first jacket and the second jacket, and a through hole is provided on the connecting plate, the mounting bolt passes through the through hole on the connecting plate, and a nut is provided at the end of the mounting bolt.

[0009] Preferably, the mounting structure also includes a threaded seat, a through hole, a pin, a slot, a mounting hole, a hexagonal block, a threaded groove and a limiting rod, the threaded seat is opened on the fixed frame, the through hole is opened on the fixed frame and the threaded seat, the pin is fixed on the rotating seat, and the pin is located in the circular hole on the fixed frame, the slot is opened on the rotating seat, and the slots are distributed in a circular array on the rotating seat, and the mounting hole is opened on the mounting plate.

[0010] Preferably, the thread groove is formed on the hexagonal block, the end of the limiting rod is connected to the hexagonal block, and the limiting rod passes through the through hole and is connected to the slot, and the hexagonal block is threadedly connected to the thread seat via the thread groove.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the new drop-out fuse, through the setting of the mounting structure, the mounting plate is installed on the fixing frame through the rotating seat, and the rotation adjustment can be performed when needed, thereby improving the flexibility of use of the entire drop-out fuse, and a slot is provided on the rotating seat, which is used in conjunction with the limit plug rod, so that the angle of the drop-out fuse can be adjusted according to a specific angle, and the stability after adjustment can be ensured, and the hexagonal block at the end of the limit plug rod is connected to the threaded seat through a threaded groove, which can ensure the connection stability of the limit plug rod and prevent the limit plug rod from falling off and causing the drop-out fuse to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model fuse tube when it is closed;

[0013] Figure 2 This is a schematic diagram of the structure of the utility model fuse tube when it is opened;

[0014] Figure 3 It is a structural schematic diagram of the connection structure of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the installation structure of the utility model;

[0016] Figure 5 For this utility model Figure 4 Enlarged view of point A in the middle.

[0017] In the figure: 1. high-strength insulator; 2. upper terminal; 3. lower terminal; 4. connecting buckle; 5. rotating connecting frame; 6. fuse tube; 7. connecting structure; 701. first jacket; 702. second jacket; 703. connecting plate; 704. mounting bolt; 8. mounting structure; 801. fixing frame; 802. round hole; 803. threaded seat; 804. through hole; 805. mounting plate; 806. rotating seat; 807. pin; 808. slot; 809. mounting hole; 810. hexagonal block; 811. threaded groove; 812. limit rod; 9. clamping joint; 10. control ring. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] like Figure 1-Figure 5 As shown, a novel drop-out fuse includes a high-strength insulator 1, an upper terminal 2 is provided at the upper end of the high-strength insulator 1, and a lower terminal 3 is connected to the lower end of the high-strength insulator 1, a connecting buckle 4 is provided on the upper terminal 2, a rotating connecting frame 5 is connected to the lower terminal 3, and a fuse tube 6 is provided on the rotating connecting frame 5, a mounting structure 8 is installed on the high-strength insulator 1 through a connecting structure 7, the lower end of the fuse tube 6 is rotatably connected to the rotating connecting frame 5, and the upper end of the fuse tube 6 is provided with a connecting buckle 4, a control ring 10 is provided at the upper end of the fuse tube 6, and the connecting structure 7 includes a first jacket 701, a second jacket 702, a connecting plate 703 and a mounting bolt 704. The first jacket 701 and the second jacket 702 are sleeved on the high-strength insulator 1, and the connecting plate 703 is installed at the ends of the first jacket 701 and the second jacket 702, and a through hole is provided on the connecting plate 703, and the mounting bolt 704 passes through the through hole on the connecting plate 703, and a nut is provided at the end of the mounting bolt 704.

[0020] When installing the drop-out fuse, the first jacket 701 and the second jacket 702 are set on the high-strength insulator 1, the mounting bolt 704 passes through the through hole on the connecting plate 703, and a nut is set at the end of the mounting bolt 704, so as to connect the high-strength insulator 1 with the mounting structure 8. Then, the entire drop-out fuse is installed on the corresponding bracket through the mounting structure 8, and the upper wiring terminal 2 and the lower wiring terminal 3 are used to connect the line. Under normal conditions, the fuse tube 6 is in the closed state and the circuit operates normally. When maintenance is required, Disconnect the corresponding fuse tube 6, enter the operating room, connect it to the control ring 10 through the hook on the operating rod, pull down the fuse tube 6, and the fuse tube 6 rotates on the rotating connecting frame 5, so that the card connector 9 is moved out of the connecting buckle 4. At this time, the fuse tube 6 is in an open state, and the circuit is disconnected for maintenance work. When the maintenance is completed, push the fuse tube 6 up through the control ring 10 to close the circuit, so that the card connector 9 is connected to the connecting buckle 4. If a short circuit occurs in the circuit, the fuse inside the fuse tube 6 breaks and the circuit is disconnected, thereby ensuring the integrity of other components of the circuit.

[0021] Through the above implementation scheme, the mounting structure 8 includes a fixing frame 801, a circular hole 802, a mounting plate 805 and a rotating seat 806, the circular hole 802 is provided on the fixing frame 801, the mounting plate 805 is fixedly connected to the rotating seat 806, and the rotating seat 806 is connected to the fixing frame 801, the mounting structure 8 also includes a threaded seat 803, a through hole 804, a pin 807, a slot 808, a mounting hole 809, a hexagonal block 810, a threaded groove 811 and a limiting plug rod 812, the threaded seat 803 is provided on the fixing frame 801, the through hole 804 is provided through the fixing frame 801 and the threaded seat 803, the pin 807 is fixed on the rotating seat 806, and the pin 807 is located in the circular hole 802 on the fixing frame 801, the slot 808 is provided on the rotating seat 806, and the slots 808 are distributed in a circular array on the rotating seat 806, the mounting hole 809 is provided on the mounting plate 805, the threaded The slot 811 is provided on the hexagonal block 810, the end of the limiting plug rod 812 is connected to the hexagonal block 810, and the limiting plug rod 812 passes through the through hole 804 and is connected to the slot 808. The hexagonal block 810 is threadedly connected to the threaded seat 803 through the threaded slot 811. Through the provided mounting structure 8, the mounting plate 805 is mounted on the fixing frame 801 through the rotating seat 806, and can be rotated and adjusted when necessary, thereby improving the flexibility of use of the entire drop-out fuse. The slot 808 is provided on the rotating seat 806, and when used in conjunction with the limiting plug rod 812, the angle of the drop-out fuse can be adjusted according to a specific angle, and the stability after adjustment can be ensured. The hexagonal block 810 at the end of the limiting plug rod 812 is connected to the threaded seat 803 through the threaded slot 811, which can ensure the connection stability of the limiting plug rod 812 and prevent the limiting plug rod 812 from falling off and causing the drop-out fuse to loosen.

[0022] When using the mounting structure 8 to install the drop-out fuse, it is installed and fixed by screws in cooperation with the mounting holes 809 on the mounting plate 805. When the angle of the drop-out fuse needs to be adjusted, the hexagonal block 810 is rotated to remove the hexagonal block 810 from the threaded seat 803, and then the limiting rod 812 is pulled outward so that its end is withdrawn from the slot 808. Then the drop-out fuse is rotated, and the fixing frame 801 is rotated on the pin 807 on the rotating seat 806 through the circular hole 802 until the drop-out fuse rotates to a specific angle, and then the limiting rod 812 is inserted inward so that the end of the limiting rod 812 is inserted into the corresponding slot 808. The hexagonal block 810 is connected to the threaded seat 803 through the threaded groove 811, and then the limiting rod 812 is fixed. After the adjustment is completed, the drop-out fuse can be connected and used.

[0023] The above content describes the use principle, features and beneficial effects of the utility model. Relevant personnel in the field can understand from the above content that the above content does not limit the utility model. The above embodiments and instructions describe the basic principles and features of the utility model. Under the premise of conforming to the concept of the utility model, the utility model can also be modified in various ways, and these modifications should fall within the scope of protection required by the utility model.

Claims

1. A novel drop-out fuse comprises a high-strength insulator (1), wherein an upper terminal (2) is provided at the upper end of the high-strength insulator (1), and a lower terminal (3) is connected to the lower end of the high-strength insulator (1), a connecting buckle (4) is provided on the upper terminal (2), a rotating connecting frame (5) is connected to the lower terminal (3), and a fuse tube (6) is provided on the rotating connecting frame (5), characterized in that: The high-strength insulator (1) is mounted with a mounting structure (8) via a connecting structure (7), and the mounting structure (8) comprises a fixing frame (801), a circular hole (802), a mounting plate (805) and a rotating seat (806), wherein the circular hole (802) is provided on the fixing frame (801), the mounting plate (805) is fixedly connected to the rotating seat (806), and the rotating seat (806) is connected to the fixing frame (801).

2. A novel drop-out fuse according to claim 1, characterized in that: The lower end of the fuse tube (6) is rotatably connected to the rotating connection frame (5), and the upper end of the fuse tube (6) is provided with a clamping joint (9) adapted to the connection buckle (4), and the upper end of the fuse tube (6) is provided with a control ring (10).

3. A novel drop-out fuse according to claim 2, characterized in that: The connection structure (7) comprises a first jacket (701), a second jacket (702), a connection plate (703) and a mounting bolt (704); the first jacket (701) and the second jacket (702) are sleeved on the high-strength insulator (1); the connection plate (703) is installed at the ends of the first jacket (701) and the second jacket (702); a through hole is provided on the connection plate (703); the mounting bolt (704) passes through the through hole on the connection plate (703); and a nut is provided at the end of the mounting bolt (704).

4. A novel drop-out fuse according to claim 3, characterized in that: The mounting structure (8) further comprises a threaded seat (803), a through hole (804), a pin (807), a slot (808), a mounting hole (809), a hexagonal block (810), a threaded groove (811) and a limiting plug rod (812); the threaded seat (803) is provided on the fixing frame (801); the through hole (804) is provided through the fixing frame (801) and the threaded seat (803); the pin (807) is fixed on the rotating seat (806), and the pin (807) is located in the circular hole (802) on the fixing frame (801); the slot (808) is provided on the rotating seat (806), and the slots (808) are distributed in a circular array on the rotating seat (806); and the mounting hole (809) is provided on the mounting plate (805).

5. A novel drop-out fuse according to claim 4, characterized in that: The thread groove (811) is formed on the hexagonal block (810), the end of the limiting rod (812) is connected to the hexagonal block (810), and the limiting rod (812) passes through the through hole (804) and is connected to the slot (808), and the hexagonal block (810) is threadedly connected to the thread seat (803) via the thread groove (811).

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