Overload protection structure for electrical equipment line

Abstract

The utility model relates to the technical field of circuit overload protectors, and discloses an overload protection structure for an electrical equipment circuit, which comprises a shell, a connecting plate is fixedly connected to the inner wall of one side of the shell, a plurality of overload protection components are mounted on the surface of one side of the connecting plate, a plurality of fixing components are arranged in the connecting plate, and the overload protection components are fixedly connected with the shell. And the fixing assembly comprises a clamping groove, a groove, a spring, an arc-shaped block, a clamping block and an arc-shaped groove, and the clamping groove is formed in the connecting plate. According to the overload protection structure for the electrical equipment line, by arranging the overload protection assembly, when the line is overloaded, the fusing column can be fused along with the rise of the temperature of the line, so that the line is powered off, by arranging the fixing assembly, the second protection shell can be detached in a clamping mode, the fused fusing column is replaced, and the overload protection structure is convenient to use. And the installation assembly is arranged, so that the personnel can conveniently disassemble the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit overload protectors, in particular to an overload protection structure for electrical equipment circuits. Background Art

[0002] Electrical equipment is a general term for generators, transformers, power lines, circuit breakers and other equipment in the power system. In order to avoid fires caused by overload and high temperature of the lines, fuses need to be installed on their connecting lines and connected in series to the protected circuit. When the current of the protected circuit exceeds the specified value and after a certain period of time, the heat generated by the fuse itself will melt the fuse, disconnecting the circuit and thus playing a protective role.

[0003] The following problems still exist in actual use:

[0004] (1) The fuse column of the existing circuit overload protector is usually installed in the internal connection cavity of the overload protector, and the protective shell and the connection cavity are detachably installed by bolts. When the circuit overload fuse column is blown, the maintenance personnel need to remove the bolts when replacing the new fuse column, which is a cumbersome operation.

[0005] (2) In the prior art, the circuit overload protector is also installed and fixed by bolts. Since the circuit overload protector is often installed in a narrow space, it is very difficult to repair and replace the components in the circuit overload protector. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides an overload protection structure for an electrical equipment circuit, which has the advantages of being easy for personnel to replace fuse columns and convenient for maintenance and replacement of components in the overload protector, thereby solving the problems raised in the background technology.

[0007] The utility model provides the following technical solution: an overload protection structure for an electrical equipment circuit, comprising a housing, a connection plate fixedly connected to an inner wall of one side of the housing, a plurality of overload protection components installed on a surface of one side of the connection plate, and a plurality of fixing components arranged inside the connection plate;

[0008] The fixing assembly includes a snap-in groove, a groove, a spring, an arc block, a snap-in block and an arc groove, wherein the snap-in groove is arranged inside the connecting plate, grooves are arranged on the upper and lower sides of the snap-in groove, a spring is arranged inside the groove, an arc block is arranged at the bottom end of the spring, a snap-in block is arranged inside the snap-in groove, and arc grooves are arranged on the upper and lower surfaces of the snap-in block.

[0009] Preferably, a mounting plate is provided on one side surface of the shell, and a mounting assembly is provided inside the mounting plate, and the mounting assembly includes a bidirectional threaded rod, a slider, an insertion rod, a driven gear, a turntable and a transmission gear. The mounting plate is rotatably connected to the inside of the mounting plate, and sliders are sleeved on both side surfaces of the bidirectional threaded rod, one end of the slider is fixedly connected to the insertion rod, and the surface of the bidirectional threaded rod is sleeved on the driven gear, and a turntable is rotatably connected to the surface of one side of the mounting plate, and one end of the turntable is fixedly connected to the transmission gear.

[0010] Preferably, the snap-in groove is provided on one side surface of the connecting plate, the groove is provided on the upper and lower inner walls of the snap-in groove, the top of the spring is fixedly connected to the inner wall of the groove, the arc block is fixedly connected to the bottom end of the spring, the snap-in block is snap-connected to the snap-in groove, and the arc groove is provided on the upper and lower surfaces of the snap-in block.

[0011] Preferably, the overload protection assembly includes a protective shell one, a protective shell two, a fuse column, a fixed block and a wiring terminal, the protective shell one is fixedly connected to one side surface of the connecting plate, the protective shell two is installed on one side surface of the protective shell one, a fuse column is installed between the protective shell two and the protective shell one, the surface of the protective shell two is fixedly connected to the fixed block, and the upper and lower side surfaces of the protective shell one are fixedly connected to the wiring terminals.

[0012] Preferably, the clamping block is fixedly connected to the fixing block, and the fixing block is installed on a side surface of the protective shell through the clamping block.

[0013] Preferably, a cover plate is installed on one side surface of the shell, card slots are provided at both ends of one side surface of the mounting plate, card blocks are fixedly connected at both ends of one side surface of the shell, and a slot is provided inside the card block.

[0014] Preferably, the card slot matches the model of the card block, and the slot matches the model of the insertion rod.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The overload protection structure for the circuit of the electrical equipment is provided with an overload protection component. When the circuit is overloaded, as the circuit temperature rises, the fuse column will melt, thereby cutting off the power to the circuit. By providing a fixed component, the protective shell can be removed by snap-on method and the blown fuse column can be replaced, which is convenient for personnel to operate and understand.

[0017] 2. The overload protection structure for the electrical equipment circuit is provided with an installation assembly, which makes it easy for personnel to disassemble the shell and perform maintenance and replacement on the components in the shell. The disassembly and installation operations can be completed by simply turning the turntable, and it can adapt to narrow spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model device;

[0019] Figure 2 This is a schematic diagram of the structure of the overload protection component of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the fixed component of the utility model;

[0021] Figure 4 For this utility model Figure 3 Enlarged structural diagram of point A in the middle

[0022] Figure 5 This is a schematic diagram of the housing installation structure of the utility model;

[0023] Figure 6 It is a schematic diagram of the internal structure of the mounting plate of the utility model.

[0024] In the figure: 1. shell; 2. connecting plate; 3. overload protection assembly; 301. protective shell 1; 302. protective shell 2; 303. fuse column; 304. fixing block; 305. terminal; 4. fixing assembly; 401. snap-in groove; 402. groove; 403. spring; 404. arc block; 405. snap-in block; 406. arc groove; 5. mounting plate; 6. mounting assembly; 601. bidirectional threaded rod; 602. slider; 603. plug rod; 604. driven gear; 605. turntable; 606. transmission gear; 7. block; 8. slot; 9. slot; 10. cover plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0026] See also Figure 1 - Figure 3, an overload protection structure for an electrical equipment circuit, comprising a housing 1, a connecting plate 2 is fixedly connected to an inner wall of one side of the housing 1, a plurality of fixing components 4 are arranged inside the connecting plate 2, the fixing component 4 comprises a clamping groove 401, a groove 402, a spring 403, an arc block 404, a clamping block 405 and an arc groove 406, the clamping groove 401 is arranged inside the connecting plate 2, the upper and lower sides of the clamping groove 401 are both provided with grooves 402, the inner part of the groove 402 is provided with a spring 403, the bottom end of the spring 403 is provided with an arc block 404, the inner part of the clamping groove 401 is provided with a clamping block 405, and the upper and lower surfaces of the clamping block 405 are both provided with arc grooves 406;

[0027] By providing the fixing assembly 4, the second protective shell 302 can be disassembled by snapping and the blown fuse column 303 can be replaced, which is convenient for operation and understanding.

[0028] See also Figure 3 The clamping groove 401 is provided on one side surface of the connecting plate 2, the groove 402 is provided on the upper and lower inner walls of the clamping groove 401, the top of the spring 403 is fixedly connected to the inner wall of the groove 402, the arc block 404 is fixedly connected to the bottom end of the spring 403, the clamping block 405 is clamped with the clamping groove 401, the arc groove 406 is provided on the upper and lower surfaces of the clamping block 405, the clamping block 405 is fixedly connected with the fixed block 304, and the fixed block 304 is installed on one side surface of the protective shell 301 through the clamping block 405;

[0029] When replacing the fuse column 303, the cover 10 is opened after the circuit is powered off, and the personnel pull the fixing block 304 inwardly to pull out the fixing block 304, so that the protective shell 2 302 is separated from the protective shell 1 301, so that the fuse column 303 after the fuse is blown can be taken out for replacement.

[0030] See also Figure 2 , a plurality of overload protection components 3 are installed on one side surface of the connecting plate 2, and the overload protection components 3 include a protective shell 1 301, a protective shell 2 302, a fuse column 303, a fixing block 304 and a terminal 305. A protective shell 1 301 is fixedly connected to a surface of the connecting plate 2, a protective shell 2 302 is installed on a surface of the protective shell 1 301, a fuse column 303 is installed between the protective shell 2 302 and the protective shell 1 301, a fixing block 304 is fixedly connected to the surface of the protective shell 2 302, and the upper and lower surfaces of the protective shell 1 301 are fixedly connected to the terminal 305;

[0031] By providing the overload protection component 3, when the line is overloaded, as the line temperature rises, the fuse column 303 melts, thereby cutting off the power supply to the line, thereby preventing the line from being overloaded and causing a fire due to excessively high temperature.

[0032] See also Figure 1 - Figure 3 A mounting plate 5 is provided on one side surface of the housing 1, and a mounting assembly 6 is provided inside the mounting plate 5. The mounting assembly 6 includes a bidirectional threaded rod 601, a slider 602, an insertion rod 603, a driven gear 604, a turntable 605 and a transmission gear 606. The bidirectional threaded rod 601 is rotatably connected inside the mounting plate 5. The two side surfaces of the bidirectional threaded rod 601 are sleeved with sliders 602, one end of the slider 602 is fixedly connected with the insertion rod 603, the surface of the bidirectional threaded rod 601 is sleeved with the driven gear 604, the turntable 605 is rotatably connected to the surface of one side of the mounting plate 5, and one end of the turntable 605 is fixedly connected with the transmission gear 606. A cover plate 10 is installed on one side surface of the housing 1, and slots 9 are provided at both ends of one side surface of the mounting plate 5. Blocks 7 are fixedly connected at both ends of one side surface of the housing 1, and a slot 8 is provided inside the block 7;

[0033] By providing the installation assembly 6 , it is convenient for personnel to disassemble the housing 1 and perform maintenance and replacement on the components inside the housing 1 .

[0034] In the utility model, the working steps of the device are as follows:

[0035] The first step: when in use, the overload protection component 3 is connected in series with the circuit of the electrical equipment through the terminal 305. When the circuit is overloaded, as the circuit temperature rises, the fuse column 303 melts, thereby cutting off the power supply to the circuit to prevent the circuit from being overloaded and causing a fire due to excessive temperature. When replacing the fuse column 303, the circuit is cut off and the cover plate 10 is opened. The personnel pull the fixing block 304 inward, which can drive the clamping block 405 to move and squeeze the arc block 404. The arc block 404 is forced to shrink into the groove 402, and the fixing block 304 can be pulled out to separate the protective shell 2 302 from the protective shell 1 301, so that the fuse column 303 after the fuse is taken out for replacement. After replacement, the clamping block 405 is inserted into the clamping groove 401, so that the arc block 404 enters the arc groove 406 for clamping, and the protective shell 2 302 is reinstalled and fixed, and the replacement of the fuse column 303 is completed. It is simple and easy to understand.

[0036] The second step: fix the mounting plate 5 with bolts. If the components in the outer shell 1 need to be maintained or replaced, rotate the turntable 605 to drive the transmission gear 606 to rotate, and drive the bidirectional threaded rod 601 to rotate through the driven gear 604, thereby driving the two sliders 602 to move in different directions, so that the two sliders 602 are close to each other, and the distance between the slider 602 and the slot 8 is increased. After the slider 602 is completely disengaged from the slot 8, the outer shell 1 can be pulled inwardly to remove the outer shell 1 from the mounting plate 5, and then the components inside can be maintained or replaced. The outer shell 1 can be reinstalled by the reverse operation. The disassembly and installation operations can be completed by rotating the turntable 605. It can adapt to narrow spaces and is convenient for personnel to operate.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An overload protection structure for an electrical equipment circuit, comprising a housing (1), characterized in that: A connecting plate (2) is fixedly connected to an inner wall of one side of the housing (1), a plurality of overload protection components (3) are installed on a surface of one side of the connecting plate (2), and a plurality of fixing components (4) are arranged inside the connecting plate (2); The fixing assembly (4) comprises a clamping groove (401), a groove (402), a spring (403), an arc block (404), a clamping block (405) and an arc groove (406); the clamping groove (401) is arranged inside the connecting plate (2); the clamping groove (401) is provided with grooves (402) on both upper and lower sides; the groove (402) is provided with a spring (403); the bottom end of the spring (403) is provided with an arc block (404); the clamping groove (401) is provided with a clamping block (405); and the upper and lower surfaces of the clamping block (405) are provided with arc grooves (406).

2. An overload protection structure for electrical equipment circuit according to claim 1, characterized in that: A mounting plate (5) is provided on one side surface of the housing (1), and a mounting assembly (6) is provided inside the mounting plate (5). The mounting assembly (6) comprises a bidirectional threaded rod (601), a slider (602), an insertion rod (603), a driven gear (604), a rotating disk (605) and a transmission gear (606). The mounting plate (5) is rotatably connected to the inside of the bidirectional threaded rod (601), and both side surfaces of the bidirectional threaded rod (601) are sleeved with sliders (602), one end of the slider (602) is fixedly connected with the insertion rod (603), and the surface of the bidirectional threaded rod (601) is sleeved with the driven gear (604). A rotating disk (605) is rotatably connected to one side surface of the mounting plate (5), and one end of the rotating disk (605) is fixedly connected with the transmission gear (606).

3. The overload protection structure for electrical equipment circuit according to claim 1, characterized in that: The clamping groove (401) is provided on one side surface of the connecting plate (2), the groove (402) is provided on the upper and lower inner walls of the clamping groove (401), the top end of the spring (403) is fixedly connected to the inner wall of the groove (402), the arc block (404) is fixedly connected to the bottom end of the spring (403), the clamping block (405) is clamped with the clamping groove (401), and the arc groove (406) is provided on the upper and lower surfaces of the clamping block (405).

4. The overload protection structure for electrical equipment circuit according to claim 1, characterized in that: The overload protection component (3) comprises a protective shell 1 (301), a protective shell 2 (302), a fuse column (303), a fixing block (304) and a wiring terminal (305); the protective shell 1 (301) is fixedly connected to a surface of one side of the connection plate (2); the protective shell 2 (302) is installed on a surface of one side of the protective shell 1 (301); the fuse column (303) is installed between the protective shell 2 (302) and the protective shell 1 (301); the fixing block (304) is fixedly connected to a surface of the protective shell 2 (302); and the wiring terminals (305) are fixedly connected to upper and lower surfaces of the protective shell 1 (301).

5. The overload protection structure for electrical equipment circuit according to claim 1, characterized in that: The clamping block (405) is fixedly connected to the fixing block (304), and the fixing block (304) is installed on a side surface of the protective shell (301) through the clamping block (405).

6. An overload protection structure for electrical equipment circuit according to claim 2, characterized in that: A cover plate (10) is installed on one side surface of the shell (1), a card slot (9) is provided at both ends of one side surface of the mounting plate (5), a card block (7) is fixedly connected to both ends of one side surface of the shell (1), and a slot (8) is provided inside the card block (7).

7. An overload protection structure for electrical equipment circuit according to claim 6, characterized in that: The card slot (9) matches the model of the card block (7), and the slot (8) matches the model of the insertion rod (603).

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