CN111968893A

CN111968893A - Low-voltage compound fuse capable of replacing fuse without disassembling

Info

Publication number: CN111968893A
Application number: CN202010663263.6A
Authority: CN
Inventors: 刘辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-11-20

Abstract

The invention discloses a low-voltage compound fuse capable of replacing a melt without disassembly, which comprises a shell, wherein a lead is arranged on the side surface of the shell in an inserting manner, a main melt is arranged in the lead, an auxiliary melt is arranged above the main melt, an air spring is fixedly connected to the top of the auxiliary melt, an air guide pipe is fixedly connected to the side surface of the air spring, a wind shield is arranged on the side surface of the air guide pipe in an inserting manner, a pull rod is fixedly connected to the top of the wind shield, a torsion wheel is arranged on one side of a screw rod, which is far away from a mercury pipe, a stop lever is fixedly connected to the surface of the torsion wheel, a clamping block is slidably connected to one side of the stop lever, which is far. This can need not dismantle low pressure double entry fuse of replacement fuse uses through the cooperation of mercury pipe with the takeover wheel to reached automatic replacement when the fuse-element fuses, made the fuse need not dismantle the effect of replenishing new fuse-element.

Description

Low-voltage compound fuse capable of replacing fuse without disassembling

Technical Field

The invention relates to the technical field of alternating current distribution equipment, in particular to a low-voltage compound fuse capable of replacing a fuse body without dismounting.

Background

The AC distribution equipment is used for connecting a power supply, a transformer, a converter equipment and other loads, monitoring and protecting a power supply system, and has control functions of switching on, switching off and switching between the power supply and various loads and realizing a specified operation mode, such as protection, measurement, alarm, power factor compensation and the like.

As a distribution equipment, the fuse is applied to power protection, and the fuse-element is automatic fusing when the circuit transships during its principle, prevents to take place circuit overload accident, nevertheless after the fuse-element fuses, needs to dismantle the fuse-element, replenishes new fuse-element, and the life that causes every fuse-element is shorter, and dismantles comparatively complicatedly, so need design a novel fuse that can replace the fuse-element, increase the life of fuse-element.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the low-voltage compound fuse capable of replacing the fuse without disassembly, which has the advantages of automatic replacement when the fuse is fused, no need of disassembling and supplementing new fuse, and the like, and solves the problem that the service life of each fuse is short because the fuse is required to be disassembled and the new fuse is supplemented after the existing fuse is fused.

(II) technical scheme

In order to realize the purpose that the fuse protector can be automatically replaced when the fuse protector is fused and the fuse protector does not need to be disassembled to supplement new fuse, the invention provides the following technical scheme: a low-voltage compound fuse capable of replacing a fuse without dismounting comprises a shell, wherein a lead is arranged on the side face of the shell in an inserting mode, a main fuse is arranged inside the lead in an inserting mode, an auxiliary fuse is arranged above the main fuse, an air spring is fixedly connected to the top of the auxiliary fuse, an air guide pipe is fixedly connected to the side face of the air spring, a wind shield is arranged on the side face of the air guide pipe in an inserting mode, a pull rod is fixedly connected to the top of the wind shield, an air cylinder is fixedly connected to one side, away from the air spring, of the air guide pipe, an air baffle is connected to the inside of the air cylinder in a sliding mode, an ejector rod is fixedly connected to the bottom of the air baffle, a bearing wheel is connected to the bottom of the ejector rod in a sliding mode, a screw rod is connected to the bottom of the bearing wheel, the utility model discloses a mercury pipe, including mercury pipe, heating block, screw rod, wheel center, wheel core, wheel.

Preferably, the surface of the scraping wheel is fixedly connected with a scraping rod.

Preferably, the top of the air baffle is fixedly connected with a return spring.

Preferably, the inner wheel surface of the bearing wheel is provided with an arc-shaped bulge, and the arc-shaped bulge is not contacted with the bottom of the ejector rod in a squeezing mode when the lead is loaded normally.

Preferably, the screw twisting wheel is meshed in a single direction, so that the twisting wheel is prevented from being driven again when the screw is withdrawn.

Preferably, the scraping rod on the surface moves upwards to the maximum height of the top of the conducting wire when the scraping wheel rotates, so that the fused melt is completely cleaned by the scraping rod.

Preferably, one side of the liquid baffle, which is far away from the heating block, is fixedly connected with an extrusion spring.

Preferably, the clamping block is clamped with the stop lever in a one-way mode, so that the scraping wheel is clamped and stopped when rotating by a radian every time.

(III) advantageous effects

Compared with the prior art, the invention provides the low-voltage compound fuse capable of replacing the fuse body without dismounting, which has the following beneficial effects:

1. this can need not dismantle low pressure double entry fuse of replacement fuse, through the cooperation of mercury pipe and take on the wheel and use, when the load of wire was too big, the fuse takes place to fuse for the protection circuit.

When the lead is loaded normally, the current flowing through the external line heats the heating block, so that mercury in the mercury tube expands, the liquid blocking plate is extruded, the liquid blocking plate drives the screw rod to move towards the center of the shell, the extrusion spring on the side surface of the liquid blocking plate is extruded, the screw rod reaches the side surface of the torsion wheel to be balanced, when the lead is loaded excessively, the current flowing through the external line increases, the heating amount of the heating block increases, so that mercury in the mercury tube is heated to continue to expand, the liquid blocking plate is extruded to continue to move, the screw rod is driven to move and is meshed with the bearing wheel to be driven, the bearing wheel jacks the ejector rod upwards through the arc-shaped protrusion arranged on the surface of the inner wheel, the air pressure in the cylinder is extruded through the air blocking plate, and the air pressure in the cylinder is.

When the load of the wire is determined to be stable, the pull rod is pulled to pull the wind shield upwards, the air guide pipe is opened, so that gas in the cylinder is filled into the air spring through the air guide pipe, the air spring expands to extrude the auxiliary melt below between the wires downwards, the fused melt is replaced, automatic replacement is achieved when the melt is fused, and the fuse does not need to be detached to supplement new melt.

2. This can need not dismantle low pressure double entry fuse of replacement fuse-element, cooperation through screw rod and torsion wheel is used, when the screw rod removes to shell center direction, the screw rod with insert inside the torsion wheel, produce the meshing transmission with the torsion wheel, the torsion wheel is driven and is rotated, pin through the surface produces the extrusion to the fixture block, it rotates to drive the scraping wheel through the extrusion to the fixture block, because the screw rod can only drive torsion wheel rotation part radian, consequently, the scraping wheel fixture block can be blockked by the pin when rotating one section radian, lead to scraping the surperficial scraping rod of scraping the wheel and rotate one section radian, strike off wire disconnection part's fusing fuse-element, thereby reached and prevented that the fuse-element of fusing when the replacement fuse-element from remaining the effect between the wire section.

Drawings

FIG. 1 is a schematic cross-sectional view of the entire structure of the present invention;

FIG. 2 is a schematic view of the structure of the present invention and the airway tube connection mechanism;

FIG. 3 is a schematic view of the structure and screw connection mechanism of the present invention;

FIG. 4 is a schematic view of the connection between the screw and the torsion wheel according to the present invention;

FIG. 5 is a schematic side sectional view of the twist wheel and squeegee wheel connection of the present invention;

FIG. 6 is a schematic view of the connection between the stop lever and the latch according to the present invention.

In the figure: 1. the device comprises a shell, 2, a lead, 3, a main melt, 4, an auxiliary melt, 5, an air spring, 6, an air guide pipe, 7, a wind shield, 8, an air cylinder, 9, a gas baffle plate, 10, a top rod, 11, a receiving wheel, 12, a screw rod, 13, a liquid baffle plate, 14, a mercury tube, 15, a heating block, 16, an external connection line, 17, a torsion wheel, 18, a scraping wheel, 19, a scraping rod, 20, a pull rod, 21, a clamping block, 22 and a baffle rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a low-voltage compound fuse capable of replacing a fuse without disassembly comprises a housing 1, the housing 1 is made of anticorrosive plastic, so that equipment can be effectively prevented from being corroded, the service life of the equipment is greatly prolonged, the production cost is reduced, and the low-voltage compound fuse plays an indispensable role in enterprises, a lead 2 is inserted into the side surface of the housing 1, a main fuse body 3 is arranged inside the lead 2, an auxiliary fuse body 4 is arranged above the main fuse body 3, an air spring 5 is fixedly connected to the top of the auxiliary fuse body 4, an air duct 6 is fixedly connected to the side surface of the air spring 5, a wind shield 7 is inserted into the side surface of the air duct 6, a pull rod 20 is fixedly connected to the top of the wind shield 7, an air cylinder 8 is fixedly connected to one side of the air duct 6, which is far away from the air spring 5, a gas shield 9 is slidably connected, the bottom of the ejector rod 10 is connected with a receiving wheel 11 in a sliding manner, the inner wheel surface of the receiving wheel 11 is provided with an arc-shaped bulge, and the arc-shaped bulge is in non-extrusion force contact with the bottom of the ejector rod 10 when the wire 2 is loaded normally, the bottom of the receiving wheel 11 is meshed and connected with a screw rod 12, the screw rod 12 is meshed and connected with a torsion wheel 17 in a one-way manner, the torsion wheel 17 is prevented from being driven again when the screw rod 12 is withdrawn, one side of the screw rod 12, which is far away from the center of the shell 1, is fixedly connected with a liquid baffle plate 13, one side of the liquid baffle plate 13, which is far away from the heating block 15, is fixedly connected with an extrusion spring, the side of the liquid baffle plate 13 is connected with a mercury tube 14 in a sliding manner, the heating block 15 is arranged inside the mercury tube 14, the side of the heating block 15 is fixedly connected with an external connection wire 16, one side of the screw rod 12, make scraping wheel 18 stopped by the jam when rotating a section radian at every turn, one side that fixture block 21 kept away from the wheel center is provided with scraping wheel 18, and the biggest height that moves up of scraping rod 19 on surface is the top height of wire 2 when scraping wheel 18 rotates for scraping rod 19 clears up the fused fuse-element completely, and scraping wheel 18's fixed surface is connected with scraping rod 19.

In use, when the load of the wire 2 is excessive, the melt melts to protect the circuit.

When the lead 2 is loaded normally, the current flowing through the external connecting wire 16 heats the heating block 15, so that mercury inside the mercury tube 14 expands, the liquid baffle plate 13 is extruded, the liquid baffle plate 13 drives the screw 12 to move towards the center of the shell 1, and the extrusion spring on the side surface of the liquid baffle plate 13 is extruded, so that the screw 12 is balanced when reaching the side surface of the torsion wheel 17, when the lead 2 is loaded excessively, the current flowing through the external connecting wire 16 increases, so that the heat productivity of the heating block 15 is increased, mercury inside the mercury tube 14 is heated to continue expanding, the liquid baffle plate 13 is extruded to continue moving, the screw 12 is driven to move to be in meshing transmission with the adapting wheel 11, the adapting wheel 11 jacks the ejector rod 10 upwards through the arc-shaped bulge arranged on the inner surface, the air cylinder 8 is extruded through the air baffle plate 9, and the air pressure inside the air cylinder 8 is increased.

After the load of the wire 2 is determined to be stable, the pull rod 20 is pulled to pull the wind shield 7 upwards, the air guide pipe 6 is opened, gas in the air cylinder 8 is filled into the air spring 5 through the air guide pipe 6, the air spring 5 expands to extrude the lower auxiliary melt 4 downwards between the wires 2, the fused melt is replaced, and therefore the automatic replacement is achieved when the melt is fused, and the fuse does not need to be detached to supplement new melt.

When the screw rod 12 moves to the center direction of the shell 1, the screw rod 12 and the torsion wheel 17 are inserted into the interior, the torsion wheel 17 is meshed for transmission, the torsion wheel 17 is driven to rotate, the stop lever 22 on the surface extrudes the clamping block 21, the scraping wheel 18 is driven to rotate through the extrusion of the clamping block 21, the screw rod 12 only can drive the torsion wheel 17 to rotate to a part of radian, the clamping block 21 can be blocked by the stop lever 22 when the scraping wheel 18 rotates to a part of radian, the scraping rod 19 on the surface of the scraping wheel 18 is driven to rotate to a part of radian, and the fused melt of the broken part of the lead 2 is scraped, so that the effect of preventing the fused melt from being remained between the sections of the lead 2 when the melt is replaced is.

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

Claims

1. A low-voltage compound fuse capable of replacing a fuse element without disassembly, comprising a housing (1), characterized in that: the side face of the shell (1) is provided with a lead (2) in an inserting mode, a main melt (3) is arranged inside the lead (2), an auxiliary melt (4) is arranged above the main melt (3), an air spring (5) is fixedly connected to the top of the auxiliary melt (4), an air duct (6) is fixedly connected to the side face of the air spring (5), a wind shield (7) is arranged on the side face of the air duct (6) in an inserting mode, a pull rod (20) is fixedly connected to the top of the wind shield (7), an air cylinder (8) is fixedly connected to one side, far away from the air spring (5), of the air duct (6), an air baffle (9) is connected to the inside of the air cylinder (8) in a sliding mode, an ejector rod (10) is fixedly connected to the bottom of the air baffle (9), a bearing wheel (11) is connected to the bottom of the ejector rod (10) in, one side fixedly connected with fender liquid board (13) at shell (1) center is kept away from in screw rod (12), the side sliding connection of fender liquid board (13) has mercury pipe (14), the inside of mercury pipe (14) is provided with heating block (15), the side fixedly connected with external tapping (16) of heating block (15), one side that mercury pipe (14) were kept away from in screw rod (12) is provided with turns round (17), turn round fixed surface of wheel (17) and be connected with pin (22), one side sliding connection that the wheel center was kept away from in pin (22) has fixture block (21), one side that the wheel center was kept away from in fixture block (21) is provided with scraping wheel (18).

2. A low voltage multiple fuse unit as defined in claim 1 wherein said fuse unit is removable for replacement of said fuse element, said multiple fuse unit comprising: the surface of the scraping wheel (18) is fixedly connected with a scraping rod (19).

3. A low voltage multiple fuse unit for replacing a fuse element without disassembly as recited in claim 2, wherein: the top of the air baffle plate (9) is fixedly connected with a return spring.

4. A low voltage multiple fuse unit as defined in claim 1 wherein said fuse unit is removable for replacement of said fuse element, said multiple fuse unit comprising: the inner wheel surface of the bearing wheel (11) is provided with an arc-shaped bulge, and the arc-shaped bulge is not contacted with the bottom of the ejector rod (10) under the condition that the load of the lead (2) is normal.

5. A low voltage multiple fuse unit as defined in claim 1 wherein said fuse unit is removable for replacement of said fuse element, said multiple fuse unit comprising: the screw rod (12) is twisted with the rotating wheel (17) and is engaged in a one-way mode.

6. A low voltage multiple fuse unit as defined in claim 1 wherein said fuse unit is removable for replacement of said fuse element, said multiple fuse unit comprising: when the scraping wheel (18) rotates, the scraping rod (19) on the surface moves upwards to the maximum height which is the top height of the wire (2).

7. A low voltage multiple fuse unit as defined in claim 1 wherein said fuse unit is removable for replacement of said fuse element, said multiple fuse unit comprising: and one side of the liquid baffle plate (13) far away from the heating block (15) is fixedly connected with an extrusion spring.

8. A low voltage multiple fuse unit as defined in claim 1 wherein said fuse unit is removable for replacement of said fuse element, said multiple fuse unit comprising: the clamping block (21) is clamped with the stop lever (22) in a one-way manner.