Circuit current limiting device for current scheduling

Abstract

The invention relates to the technical field of conductive connection, and discloses a circuit current limiting device for current scheduling, which comprises a base, two insulating support pieces are arranged on the base side by side, one insulating support piece is fixed with the base, and the other insulating support piece is matched with the base through a position adjusting assembly; the mounting seat is fixed at the top end of the insulating supporting piece, and one side of the mounting seat is connected with a binding post through a supporting plate; the at least two clamping seats are symmetrically arranged at the upper end and the lower end of the inner side of the mounting seat; through arrangement of the first guide block, the pressing assembly and the clamping seat, a new fuse tube can be directly pushed into an old fuse tube mounting position for replacement, the maintenance convenience is greatly improved, the manual operation difficulty is reduced, through arrangement of a threaded column, an adjusting sliding groove, a locking plate and a fastener, the fuse tube fixing device is suitable for fuse tubes of different specifications, and the use is convenient. And the application range of the device is enlarged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrically conductive connection, in particular to a current scheduling circuit current limiting device. BACKGROUND

[0002] Current scheduling refers to reasonably arranging and controlling the flow of current in a power system to ensure efficient and safe distribution and use of electricity. The circuit current limiting fuse in scheduling is a safety device used to protect the circuit from damage due to overload or short circuit. It can quickly disconnect the circuit when the current is too high to avoid equipment damage or fire hazards.

[0003] The existing high-voltage current limiting fuse in current scheduling needs to be manually removed from the insulating support when the fuse tube is damaged, and then a new fuse tube needs to be installed. The steps are complex, the maintenance efficiency is slow, and the manual operation also has the risk of electric shock. It is not convenient to quickly replace the damaged fuse tube, and the insulating support is fixed, which is not convenient to adjust to adapt to various specifications of the fuse tube during installation or later maintenance. Therefore, we propose a current scheduling circuit current limiting device. SUMMARY

[0004] The purpose of the present application is to provide a current scheduling circuit current limiting device to solve the problem of replacing the fuse tube of the existing high-voltage current limiting fuse, which needs to be removed first, and then the next step is to install a new fuse tube, which is more troublesome, and it is not convenient to adjust the position of the insulating support to adapt to different specifications of the fuse tube.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a current scheduling circuit current limiting device, comprising:

[0006] A base is provided with two insulating supports side by side, and one of the insulating supports is fixed with the base, and the other insulating support is matched with the base through a position adjusting assembly;

[0007] A mounting seat is fixed to the top end of the insulating support, and a terminal post is connected to the mounting seat through a support plate;

[0008] At least two clamping seats are symmetrically arranged at the upper and lower ends of the inner side of the mounting seat, and the fuse tube is clamped between the two clamping seats;

[0009] A pressing assembly is arranged on the inner side of the clamping seat to lock the fuse tube after clamping;

[0010] A first guide block is fixed to the side wall of the mounting seat to guide the fuse tube when replacing the fuse tube.

[0011] Preferably, a second guiding block for assisting in guiding the fuse tube is fixed to the edge of the side wall of the mounting base.

[0012] Preferably, the pressing component includes a sliding rod, a limiting block, a fixing cylinder, an adjusting plate, a slider and a spring. The fixing cylinder is fixed on the mounting base. The sliding rod is slidably connected inside the fixing cylinder through the slider. The lower end of the sliding rod penetrates through the clamping seat and is fixed with a limiting block. The limiting block contacts the fuse tube. The adjusting plate is connected to the upper end inside the fixing cylinder through a threaded portion, and there is a spring between the adjusting plate and the slider.

[0013] Preferably, a guiding convex block is fixed to the lower end of the inner wall of the fixing cylinder, and a groove matching the guiding convex block is formed on the outer surface of the slider.

[0014] Preferably, two limiting blocks are arranged side by side along a short side of the mounting base, and the lower surface of the limiting block has a "V"-shaped limiting groove.

[0015] Preferably, a protective cover is sleeved on the fixing cylinder, and a clamping strip contacting the fixing cylinder is provided on the inner wall of the protective cover.

[0016] Preferably, the clamping seat includes a first clamping block and a second clamping block. The first clamping block is fixed inside the mounting base, and the second clamping block matching the mounting base is fixed in the middle of the lower surface of the first clamping block.

[0017] Preferably, the mounting base is in a "C" shape, and an elastic piece contacting the fuse tube is formed by inward depression on one side of the mounting base.

[0018] Preferably, the position adjusting component includes a threaded column, an adjusting chute, a locking plate and a fastening member. An adjusting chute is formed along the long side inside the base. A connecting slider matching the adjusting chute is provided on the lower surface of the insulating support member, and a threaded column is fixed on the lower surface of the connecting slider. The locking plate and the fastening member are sequentially arranged on the threaded column.

[0019] Preferably, a convex strip is fixed to the lower surface of the base, and an adjusting groove matching the convex strip is formed on the locking plate.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] (1) By providing a first guiding block, a pressing component and a clamping seat, the present invention avoids the need to remove the old fuse tube before installing the new fuse tube in the traditional replacement of the fuse tube. The present invention can directly push the new fuse tube into the installation position of the old fuse tube for replacement, greatly improving the maintenance convenience, reducing the manual operation difficulty, and being able to lock the fuse tube well after maintenance, improving the stability after installation and being easy to use.

[0022] (2) By providing threaded columns, adjusting grooves, locking plates and fasteners, this invention avoids the traditional method of directly fixing insulating supports to the base. When encountering inconsistent fuse tube lengths, it is impossible to adjust them according to actual needs to adapt to the fuse tubes to be installed. This device has a simple structure, is easy to adapt to fuse tubes of different specifications, and increases the applicability of the device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the first guide block structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the clamping seat structure of the present invention;

[0026] Figure 4 This is a cross-sectional view of the clamping assembly of the present invention;

[0027] Figure 5 For the present invention Figure 4 A magnified structural diagram at point A;

[0028] Figure 6 This is a schematic diagram of the connection structure between the sliding rod and the limiting block of the present invention;

[0029] Figure 7 This is a schematic diagram of the connection structure between the fixing cylinder and the protective cover of the present invention;

[0030] Figure 8 This is a schematic diagram of the cross-sectional structure of the spring clip of the present invention;

[0031] Figure 9 This is an exploded view of the position adjustment component of the present invention.

[0032] In the diagram: 1. Base; 2. Insulating support; 3. Mounting seat; 4. Fuse tube; 5. Second guide block; 6. First guide block; 7. Clamping assembly; 701. Sliding rod; 702. Limiting block; 703. Fixing cylinder; 704. Adjusting plate; 705. Sliding block; 706. Spring; 707. Locking strip; 708. Guide protrusion; 709. Protective cover; 8. Clamping seat; 801. First clamping block; 802. Second clamping block; 9. Terminal block; 10. Spring piece; 111. Threaded post; 112. Adjusting groove; 113. Locking plate; 114. Fastener. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-9 The present invention provides a technical solution: a current-limiting circuit device for current regulation, comprising:

[0035] The base 1 has two insulating supports 2 arranged side by side on it. One of the insulating supports 2 is fixed to the base 1, and the other insulating support 2 is engaged with the base 1 through a position adjustment component.

[0036] Mounting base 3 is fixed to the top of insulating support 2. One side of mounting base 3 is connected to terminal post 9 through support plate for easy wiring, so that current can pass through fuse tube 4. The fuse tube 4 limits the current and melts when the current is large to cut off the circuit and ensure the safety of the entire circuit.

[0037] At least two clamping seats 8 are symmetrically arranged at the upper and lower ends of the inner side of the mounting base 3, and a fuse tube 4 is clamped between the two clamping seats 8 to facilitate clamping and fixing the fuse tube 4.

[0038] The clamping component 7 is located inside the clamping seat 8 to lock the fuse tube 4 after clamping, which can better improve the fixing effect of the fuse tube 4 and prevent the fuse tube 4 from detaching from the inside of the clamping seat 8.

[0039] The first guide block 6 is fixed to the side wall of the mounting base 3 to guide the fuse tube 4 when replacing it. This makes it easier to replace the old fuse tube 4 when replacing the damaged one. The old fuse tube 4 can be replaced simply by the new fuse tube 4 coming into contact with the old one, avoiding the inconvenience of having to remove the fuse tube 4 first and then install the new one, thus improving the efficiency of replacement and maintenance.

[0040] Preferably, a second guide block 5 is fixed to the edge of the side wall of the mounting base 3 to assist in guiding the fuse tube 4, so as to better guide the old fuse tube 4 between the two clamping seats 8.

[0041] Preferably, the pressing component 7 includes a sliding rod 701, a limiting block 702, a fixing cylinder 703, an adjusting plate 704, a slider 705 and a spring 706. The fixing cylinder 703 is fixed on the mounting base 3. The inner side of the fixing cylinder 703 is slidably connected with the sliding rod 701 through the slider 705. The lower end of the sliding rod 701 penetrates through the clamping seat 8 and is fixed with the limiting block 702. The limiting block 702 contacts the fuse tube 4, which is convenient for better restricting the left and right movement of the fuse tube 4 through the limiting block 702, avoiding the accidental detachment of the end of the fuse tube 4 from between the two clamping seats 8, and improving the clamping and fixing effect on the fuse tube 4. The adjusting plate 704 is connected to the upper end inside the fixing cylinder 703 through a threaded portion, and there is a spring 706 between the adjusting plate 704 and the slider 705, which is convenient for conveniently adjusting and maintaining the elastic force of the spring 706 after long-term use.

[0042] Preferably, a guiding convex block 708 is fixed at the lower end of the inner wall of the fixing cylinder 703, and a groove matching the guiding convex block 708 is formed on the outer surface of the slider 705, which is convenient for the slider 705 to move up and down better to compress the spring 706 when adjusting the elastic force of the spring 706.

[0043] Preferably, two limiting blocks 702 are arranged side by side along a short side of the mounting base 3, and the lower surface of the limiting block 702 has a "V"-shaped limiting groove, which is convenient for better limiting the fuse tube 4 to prevent the fuse tube 4 from moving.

[0044] Preferably, a protective cover 709 is sleeved on the fixing cylinder 703, and a clamping strip 707 contacting the fixing cylinder 703 is provided on the inner wall of the protective cover 709, which is convenient for waterproofing and dustproofing and preventing entry into the inner side of the fixing cylinder 703.

[0045] Preferably, the clamping seat 8 includes a first clamping block 801 and a second clamping block 802. The first clamping block 801 is fixed inside the mounting base 3, and a second clamping block 802 matching the mounting base 3 is fixed in the middle of the lower surface of the first clamping block 801, which is convenient for making the elastic force evenly distributed and better clamping and fixing the end of the fuse tube 4.

[0046] Preferably, the mounting base 3 is in a "C" shape, and an elastic piece 10 contacting the fuse tube 4 is formed by the inward depression of one side surface of the mounting base 3, which is convenient for better contacting the end of the fuse tube 4 to conduct electricity and making the current conduct with the terminal 9.

[0047] Preferably, the position adjustment assembly includes a threaded post 111, an adjustment groove 112, a locking plate 113, and a fastener 114. The adjustment groove 112 is provided on the inner side of the base 1 along its long side. The lower surface of the insulating support 2 has a connecting slider that cooperates with the adjustment groove 112, and the lower surface of the connecting slider is fixed with the threaded post 111. The locking plate 113 and the fastener 114 are sequentially arranged on the threaded post 111 to facilitate the adjustment of the distance between the two insulating supports 2, so that fuse tubes 4 of different lengths can be installed between the two insulating supports 2, thereby improving the applicability of the device.

[0048] Preferably, a protruding strip is fixed on the lower surface of the base 1, and an adjustment groove that cooperates with the protruding strip is provided on the locking plate 113, so as to better restrict the left and right movement of the insulating support 2 after adjustment.

[0049] The working principle and usage of this invention are as follows: When replacing the fuse tube 4, simply push the new fuse tube 4 between the two clamping seats 8, guided by the first guide block 6. At this time, the new fuse tube 4 pushes the limiting block 702 upward, the spring 706 is compressed and shortened, the new fuse tube 4 abuts against the old fuse tube 4 and falls off between the two clamping seats 8, the new fuse tube 4 enters between the two clamping seats 8 and is clamped by the two clamping seats 8. At the same time, under the elastic pressure of the spring 706, the two sliding rods 701 drive the limiting block 702. 2. Move down to lock the fuse tube 4 in place. Further, the protective cover 709 can be pulled off the fixed cylinder 703, and then the adjusting plate 704 can be rotated down to adjust the downward pressure of the spring 706 on the sliding rod 701 through the slider 705, so as to ensure a more secure locking effect on the fuse tube 4. When the replacement fuse tube 4 is not the same length as the original fuse tube 4, the fastener 114 can be loosened to make the connecting slider drive the insulating support 2 to move, thereby adjusting the distance between the two insulating supports 2 to match the length of the replacement fuse tube 4 for assembly.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A current-scheduled circuit current limiting device, characterized by, The utility model relates to a fuse holder, including: The base (1) is provided with two insulation supports (2) side by side on the base (1), and one of the insulation supports (2) is fixed with the base (1), and the other insulation support (2) is matched with the base (1) through a position adjusting assembly; The mounting seat (3) is fixed to the top end of the insulation support (2), and the mounting seat (3) is connected with a terminal post (9) through a support plate on one side; At least two clamping seats (8) are symmetrically arranged at the upper and lower ends of the inner side of the mounting seat (3), and the fuse tube (4) is clamped between the two clamping seats (8); The compression assembly (7) is arranged on the inner side of the clamping seat (8) to lock the fuse tube (4) after clamping; The first guide block (6) is fixed to the side wall of the mounting seat (3) to guide the fuse tube (4) when replacing the fuse tube (4).

2. A current-scheduled circuit current-limiting device according to claim 1, wherein: The second guide block (5) is fixed to the edge of the side wall of the mounting seat (3) to assist in guiding the fuse tube (4).

3. A current-scheduled circuit current-limiting device according to claim 1, wherein: The compression assembly (7) includes a sliding rod (701), a limiting block (702), a fixed cylinder (703), an adjusting plate (704), a sliding block (705) and a spring (706), the fixed cylinder (703) is fixed to the mounting seat (3), the sliding rod (701) is slidably connected to the inner side of the fixed cylinder (703) through the sliding block (705), the lower end of the sliding rod (701) penetrates the clamping seat (8) and is fixed with the limiting block (702), the limiting block (702) is in contact with the fuse tube (4), the adjusting plate (704) is connected to the upper end of the inner side of the fixed cylinder (703) through a threaded portion, and the spring (706) is arranged between the adjusting plate (704) and the sliding block (705).

4. A current-scheduled circuit current-limiting device according to claim 3, wherein: The inner wall of the fixed cylinder (703) is fixed with a guide protrusion (708) at the lower end, and the outer surface of the sliding block (705) is provided with a groove matched with the guide protrusion (708).

5. A current-scheduled circuit current-limiting device according to claim 3, wherein: The limiting block (702) is arranged side by side along a short edge of the mounting seat (3), and the lower surface of the limiting block (702) is provided with a "V"-shaped limiting groove.

6. A current-scheduled circuit current-limiting device according to claim 3, wherein: The fixed cylinder (703) is provided with a protective cover (709), and the inner wall of the protective cover (709) is provided with a clamping strip (707) in contact with the fixed cylinder (703).

7. A current-scheduled circuit current-limiting device according to claim 1, wherein: The clamping seat (8) includes a first clamping block (801) and a second clamping block (802), the first clamping block (801) is fixed to the inner side of the mounting seat (3), and the second clamping block (802) is fixed to the lower surface of the first clamping block (801) and matched with the mounting seat (3).

8. A current-scheduled circuit current-limiting device according to claim 1, wherein: The mounting seat (3) is a " " character-shaped, and the side of the mounting seat (3) is recessed inward to form a spring piece (10) in contact with the fuse tube (4).

9. A current-scheduled circuit current-limiting device according to claim 1, wherein: The position adjusting assembly comprises a threaded column (111), an adjusting sliding groove (112), a locking plate (113) and a fastener (114), the adjusting sliding groove (112) is formed in the bottom (1) along the long side, the lower surface of the insulating support (2) is provided with a connecting sliding block matched with the adjusting sliding groove (112), the lower surface of the connecting sliding block is fixed with the threaded column (111), and the locking plate (113) and the fastener (114) are sequentially arranged on the threaded column (111).

10. A current-scheduled circuit current-limiting device according to claim 9, wherein: The lower surface of the bottom (1) is fixed with a convex strip, and the locking plate (113) is provided with an adjusting groove matched with the convex strip.

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