CN110444443B - Overcurrent protection relay - Google Patents
Overcurrent protection relay Download PDFInfo
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- CN110444443B CN110444443B CN201910747345.6A CN201910747345A CN110444443B CN 110444443 B CN110444443 B CN 110444443B CN 201910747345 A CN201910747345 A CN 201910747345A CN 110444443 B CN110444443 B CN 110444443B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H45/00—Details of relays
- H01H45/12—Ventilating; Cooling; Heating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H45/00—Details of relays
- H01H45/14—Terminal arrangements
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- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention belongs to the technical field of relays, and particularly relates to an overcurrent protection relay which comprises a base, a movable groove, a protective shell, a side door, a bottom plate, a first connecting rod, a second connecting rod, a connecting shaft, a fixed cylinder, a sliding block, a first spring, a connecting rod, a second spring, a connecting block, a fixed plate, a heat dissipation hole, an ash prevention net, a side cover, a ventilation groove, a refrigerating pipe, a semiconductor refrigerating sheet, a heat dissipation cavity, a fan, an installation frame, a relay body, a micro motor, a gear, a first rack plate, an installation plate, a second rack plate, a side plate, a movable plate, a fixed rod, a wire inlet groove, a through groove, a pull rod, a limiting groove, a third spring, a fixed. The fan works to drive air to enter the ventilating groove from the air inlet hole at one end of the side cover, and the air is cooled and conveyed to the inside of the protective shell through the refrigerating pipe and the semiconductor refrigerating sheet in the ventilating groove, so that the relay body is cooled during working, and the service life of the relay is prolonged.
Description
Technical Field
The invention belongs to the technical field of relays, and particularly relates to an overcurrent protection relay.
Background
Overcurrent protection relay: the current better overcurrent protection relay can integrate protection, single-phase current measurement and control functions into a whole, realize data sharing and remote control with a remote host computer through an in-com interface, realize data sharing and remote control functions with the remote host computer through an in-con interface, and focus on that the protection function can be generally summarized into a phase element and a grounding element: the device has the advantages of inverse time limit overcurrent protection, short time delay protection, overcurrent protection during transformation ratio of the instantaneous current transformer, overload alarm, area interlocking and self-perfect self-checking function, and ensures that the device provides reliable protection for primary equipment.
The existing relay is small, in the more electronic component of internally mounted, because mounting structure is compact, under operating condition, electronic component generates heat easily, generally only dispels the heat through setting up the louvre on the relay casing, however, this kind of relay that only sets up the louvre is under long-time operating condition, its inside heat can't in time be discharged, because can in time get rid of the damage that the heat can cause some parts, reduce the life of relay, the general fixed mounting of current relay, inconvenient wiring and change, in general overcurrent protection relay installation mill, vibrate along with the vibration that the machine in the mill produced easily, thereby make the cable pine of connecting the relay take off and damage the inside electrical components of relay. Therefore, an overcurrent protection relay is proposed to solve the above problems.
Disclosure of Invention
The present invention is directed to solving the above problems and providing an overcurrent protection relay.
The invention achieves the above purpose through the following technical scheme, and the overcurrent protection relay comprises a base, a vibration damper, a heat radiator, a fixing device and a wire disconnection preventing device;
the vibration damping device comprises a movable groove arranged in the base, the bottom of the movable groove is fixedly connected with a bottom plate, two ends of the bottom plate are rotatably connected with one end of a first connecting rod through a rotating shaft, the other end of the first connecting rod is rotatably connected with one end of a second connecting rod through a connecting shaft, the second connecting rod is rotatably connected with a fixed block through a rotating shaft, and the top end of the fixed block is fixedly connected with the bottom end of the fixed plate;
the heat dissipation device comprises a protective shell fixedly connected to the top end of a fixed plate, one end of the protective shell is hinged to a side door, two ends of the protective shell are fixedly connected with side covers, a refrigeration pipe is fixedly connected inside the side covers, a semiconductor refrigeration sheet is installed inside the refrigeration pipe, a mounting frame is fixedly connected inside the side covers, a fan is installed inside the mounting frame, heat dissipation holes are formed in the side walls of two ends of the protective shell, and an anti-dust net is fixedly connected inside the heat dissipation holes;
the fixing device comprises a micro motor arranged in a protective shell, the output end of the micro motor is sleeved with a gear, the interior of the protective shell is fixedly connected with a side plate, a through groove is formed in the side plate, the interior of the through groove is connected with a first rack plate and a second rack plate in a sliding mode, one end of the first rack plate is fixedly connected with a mounting plate, and one end of the mounting plate is provided with a relay body;
the wire-off preventing device comprises a fixed rod fixedly connected with one end of the second rack plate, one end of the fixed rod is fixedly connected with a movable plate, a limiting groove is formed in one end of the movable plate, the limiting groove is connected with a fixed column in a sliding mode, and one end of the fixed column is fixedly connected with a clamping plate.
Preferably, the wire inlet plate is fixedly connected to the inside of the protective shell, a plurality of clamping grooves distributed at equal intervals are formed in one end of the wire inlet plate, and the clamping plates are connected in a matched mode through the clamping grooves.
Preferably, the top end of the fixing column is fixedly connected with one end of a third spring, the other end of the third spring is fixedly connected with one end of a pull rod, and the pull rod is connected inside the limiting groove in a sliding mode.
Preferably, the pull rod is I-shaped, and a third spring fixedly connected with one end of the pull rod is sleeved inside the limiting groove.
Preferably, the top end of the bottom plate is fixedly connected with the fixed cylinder, the inside of the fixed cylinder is connected with the sliding block in a sliding mode, one end of the sliding block is fixedly connected with the connecting rod, the outer side of the connecting rod is sleeved with the first spring, and one end of the connecting rod is fixedly connected with the bottom center of the fixed plate.
Preferably, one end of the second connecting rod is fixedly connected with the connecting block, one end of the connecting block is fixedly connected with one end of the second spring, and the other end of the second spring is fixedly connected with the side wall of the fixed cylinder.
Preferably, the one end of side cap is opened has the inlet port that the equidistance distributes, and the inside of side cap is opened has the heat dissipation chamber, and the one end intercommunication louvre in heat dissipation chamber, the inside intercommunication refrigeration pipe in heat dissipation chamber.
Preferably, both ends of the gear are respectively engaged with one end of the first rack plate and one end of the second rack plate.
Preferably, the top of the protective shell is provided with line inlet grooves distributed at equal intervals, and the protective shell is connected inside the movable groove in a sliding manner.
Preferably, both ends of the fixing rod are slidably connected with the through grooves in the side plates.
The invention has the beneficial effects that:
(1) according to the invention, the position of the relay body is fixed through the two mounting plates, then the micro motor is turned on through the external switch, the micro motor drives the gear to rotate, the gear drives the first rack plate and the second rack plate which are connected at two ends in a meshed mode to slide along the through groove in the side plate, and the first rack plate drives the mounting plates to move, so that the position of the relay body in the protective shell is adjusted, and wiring and moving are facilitated.
(2) According to the invention, the connecting rod is driven by the second rack plate to move along the through groove, a cable to be connected with the relay body penetrates through the wire inlet groove, then the pull rod is pulled to drive the third spring to slide in the limiting groove, the third spring is stretched to drive the fixing column and the clamping plate to move, the cable to be fixed is placed in the clamping groove in the wire inlet plate, the pull rod is loosened, the third spring is reset to push the clamping plate at one end of the fixing column to be matched and connected with the clamping groove, so that the cable in the clamping groove is fixed, and the cable is prevented from falling off in the working process of the relay.
(3) Through fan and semiconductor refrigeration piece, fan work drives the air and gets into ventilative inslot from the inlet port of side cap one end, and the refrigeration pipe and the semiconductor refrigeration piece through ventilative inslot cool down the air, and the air after will cooling passes through the inside that the heat dissipation hole carries to the protective housing through preventing that the ash screen filters to cooling down the relay body at the during operation, improving the life of relay.
(4) Through the protective housing under the vibration along the inside movable groove of base to the bottom slip of movable groove, the protective housing drives fixed plate and fixed block downstream, the fixed block drives the pivot and rotates the second connecting rod of connecting, the second connecting rod passes through the connecting axle and rotates with first connecting rod, the one end that the second connecting rod passes through the connecting block and drives the second spring moves down, thereby make the protective housing in time reset when providing the damping to the protective housing, the fixed plate drives the inside slip of connecting rod and slider at the solid fixed cylinder, the connecting rod is with first spring compression, thereby provide the secondary damping to the protective housing, thereby carry out the damping to the relay body in operation, the influence that the vibration produced when reducing the relay body work.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a schematic structural view of the movable plate, the pull rod, the limiting groove, the third spring, the fixed column and the clamping plate of the present invention;
FIG. 5 is a schematic structural diagram of the wire feeding board and the card slot of the present invention
Fig. 6 is a schematic structural view of the side plates, through slots and gears of the present invention.
In the figure: 1. the base, 2, the activity groove, 3, the protective housing, 301, the side door, 4, the bottom plate, 5, the first connecting rod, 501, the second connecting rod, 6, the connecting shaft, 7, the fixed cylinder, 8, the slider, 9, the first spring, 10, the connecting rod, 11, the second spring, 12, the connecting block, 13, the fixed block, 14, the fixed plate, 15, the heat dissipation hole, 16, the dustproof net, 17, the side cover, 18, the ventilation groove, 19, the refrigeration pipe, 20, the semiconductor refrigeration piece, 21, the heat dissipation cavity, 22, the fan, 23, the mounting bracket, 24, the relay body, 25, the micro motor, 26, the gear, 27, the first rack plate, 28, the mounting plate, 29, the second rack plate, 30, the side plate, 31, the movable plate, 32, the fixed rod, 33, the wire inlet groove, 34, the through groove, 35, the pull rod, 36, the limiting groove, 37, the third spring, 38, the fixed column, 39, the clamping plate, a clamping groove.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below 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.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1-6, an overcurrent protection relay includes a base 1, a damping device, a heat dissipation device, a fixing device, and a wire-off prevention device; the vibration damping device comprises a movable groove 2 arranged in a base 1, the bottom of the movable groove 2 is fixedly connected with a bottom plate 4, two ends of the bottom plate 4 are rotatably connected with one end of a first connecting rod 5 through a rotating shaft, the other end of the first connecting rod 5 is rotatably connected with one end of a second connecting rod 501 through a connecting shaft 6, the second connecting rod 501 is rotatably connected with a fixed block 13 through a rotating shaft, the top end of the fixed block 13 is fixedly connected with the bottom end of a fixed plate 14, and the damage of vibration to the relay is reduced;
the heat dissipation device comprises a protective shell 3 fixedly connected to the top end of a fixing plate 14, one end of the protective shell 3 is hinged to a side door 301, two ends of the protective shell 3 are fixedly connected with side covers 17, the interior of each side cover 17 is fixedly connected with a refrigeration pipe 19, a semiconductor refrigeration sheet 20 is installed inside each refrigeration pipe 19, the interior of each side cover 17 is fixedly connected with an installation frame 23, a fan 22 is installed inside each installation frame 23, heat dissipation holes 15 are formed in side walls of two ends of the protective shell 3, an anti-dust net 16 is fixedly connected inside each heat dissipation hole 15, and the service life of the relay is prolonged;
the fixing device comprises a micro motor 25 arranged inside a protective shell 3, the output end of the micro motor 25 is sleeved with a gear 26, the inside of the protective shell 3 is fixedly connected with a side plate 30, a through groove 34 is formed inside the side plate 30, the inside of the through groove 34 is connected with a first rack plate 27 and a second rack plate 29 in a sliding mode, one end of the first rack plate 27 is fixedly connected with a mounting plate 28, and one end of the mounting plate 28 is provided with a relay body 24, so that wiring and moving are facilitated;
the wire-off preventing device comprises a fixing rod 32 fixedly connected with one end of the second rack plate 29, one end of the fixing rod 32 is fixedly connected with a movable plate 31, a limiting groove 36 is formed in one end of the movable plate 31, a fixing column 38 is slidably connected with the inside of the limiting groove 36, and one end of the fixing column 38 is fixedly connected with a clamping plate 39 to prevent the cable from loosening.
The wire inlet plate 40 is fixedly connected to the inside of the protective shell 3, a plurality of clamping grooves 41 are formed in one end of the wire inlet plate 40 and distributed at equal intervals, the clamping grooves 41 are matched and connected with the clamping plate 39, the structure is more reasonable, and cables are convenient to fix; the top end of the fixing column 38 is fixedly connected with one end of a third spring 37, the other end of the third spring 37 is fixedly connected with one end of a pull rod 35, and the pull rod 35 is connected inside the limiting groove 36 in a sliding mode, so that the structure is more reasonable, and the connection is convenient; the pull rod 35 is I-shaped, and a third spring 37 fixedly connected with one end of the pull rod 35 is sleeved inside the limiting groove 36, so that the structure is more reasonable and the connection is convenient; the top end of the bottom plate 4 is fixedly connected with a fixed cylinder 7, the inside of the fixed cylinder 7 is connected with a sliding block 8 in a sliding mode, one end of the sliding block 8 is fixedly connected with a connecting rod 10, the outer side of the connecting rod 10 is sleeved with a first spring 9, and one end of the connecting rod 10 is fixedly connected with the bottom center of a fixed plate 14, so that the structure is more reasonable, and the connection is convenient; one end of the second connecting rod 501 is fixedly connected with the connecting block 12, one end of the connecting block 12 is fixedly connected with one end of the second spring 11, and the other end of the second spring 11 is fixedly connected with the side wall of the fixed cylinder 7, so that the structure is more reasonable and the connection is convenient; one end of the side cover 17 is provided with air inlets which are distributed at equal intervals, the inside of the side cover 17 is provided with a heat dissipation cavity 21, one end of the heat dissipation cavity 21 is communicated with the heat dissipation hole 15, and the inside of the heat dissipation cavity 21 is communicated with the refrigerating pipe 19, so that the structure is more reasonable and the connection is convenient; two ends of the gear 26 are respectively engaged and connected with one end of the first rack plate 27 and one end of the second rack plate 29, so that the structure is more reasonable and the connection is convenient; the top of the protective shell 3 is provided with the wire inlet grooves 33 which are distributed at equal intervals, and the protective shell 3 is connected inside the movable groove 2 in a sliding manner, so that the structure is more reasonable and the connection is convenient; the two ends of the fixing rod 32 are slidably connected with the through groove 34 in the side plate 30, so that the structure is more reasonable and the connection is convenient.
When the invention is used, firstly, the electrical components in the device are externally connected with a control switch and a power supply, then the position of the base 1 is fixed, the side door 301 hinged at one end of the protective shell 3 is opened, then the relay body 24 to be installed is placed in the protective shell 3, the position of the relay body 24 is fixed through the two mounting plates 28, then the micro motor 25 is opened through the external switch, the micro motor 25 drives the gear 26 to rotate, the gear 26 drives the first rack plate 27 and the second rack plate 29 which are engaged and connected at two ends to slide along the through groove 34 in the side plate 30, the first rack plate 27 drives the mounting plates 28 to move, thereby adjusting the position of the relay body 24 in the protective shell 3, thereby facilitating the wiring and moving, the second rack plate 29 drives the connecting rod 10 to move along the through groove 34, and the cable which needs to be connected with the relay body 24 is inserted through the wire inlet groove, then, by pulling the pull rod 35, the pull rod 35 drives the third spring 37 to slide in the limiting groove 36, the third spring 37 stretches to drive the fixed column 38 and the clamping plate 39 to move, the cable to be fixed is placed in the clamping groove 41 in the wire inlet plate 40, the pull rod 35 is loosened, the third spring 37 resets to push the clamping plate 39 at one end of the fixed column 38 to be matched and connected with the clamping groove 41, so that the cable in the clamping groove 41 is fixed, the cable is prevented from falling off in the working process of the relay, the fan 22 and the semiconductor refrigerating sheet 20 are turned on through the external switch, the fan 22 works to drive air to enter the ventilating groove 18 from the air inlet at one end of the side cover 17, the air is cooled through the refrigerating pipe 19 and the semiconductor refrigerating sheet 20 in the ventilating groove 18, the cooled air is filtered and conveyed to the inside of the protective housing 3 through the dust-proof net 16 through the heat dissipation holes 15, the service life of the relay is prolonged, when the base 1 vibrates along with the machine in a factory, the protective shell 3 slides to the bottom of the movable groove 2 along the movable groove 2 in the base 1 under vibration, the protective shell 3 drives the fixed plate 14 and the fixed block 13 to move downwards, the fixed block 13 drives the second connecting rod 501 which is rotatably connected with the rotating shaft to rotate, the second connecting rod 501 rotates with the first connecting rod 5 through the connecting shaft 6, the second connecting rod 501 drives one end of the second spring 11 to move downwards through the connecting block 12, thereby providing a vibration reduction for the protective shell 3 and simultaneously enabling the protective shell 3 to reset in time, the fixed plate 14 drives the connecting rod 10 and the sliding block 8 to slide in the fixed cylinder 7, the connecting rod 10 compresses the first spring 9, thereby provide secondary damping to protective housing 3 to carry out the damping to relay body 24 in service, reduce the influence that relay body 24 during operation vibration produced.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. An overcurrent protection relay, characterized in that: comprises a base (1), a vibration damping device, a heat dissipation device, a fixing device and an anti-drop device; the vibration damping device comprises a movable groove (2) arranged in a base (1), the bottom of the movable groove (2) is fixedly connected with a bottom plate (4), two ends of the bottom plate (4) are rotatably connected with one end of a first connecting rod (5) through a rotating shaft, the other end of the first connecting rod (5) is rotatably connected with one end of a second connecting rod (501) through a connecting shaft (6), the second connecting rod (501) is rotatably connected with a fixed block (13) through a rotating shaft, and the top end of the fixed block (13) is fixedly connected with the bottom end of a fixed plate (14);
the heat dissipation device comprises a protective shell (3) fixedly connected to the top end of a fixing plate (14), one end of the protective shell (3) is hinged to a side door (301), two ends of the protective shell (3) are fixedly connected with side covers (17), the inside of each side cover (17) is fixedly connected with a refrigeration pipe (19), a semiconductor refrigeration sheet (20) is installed inside each refrigeration pipe (19), the inside of each side cover (17) is fixedly connected with a mounting frame (23), a fan (22) is installed inside each mounting frame (23), heat dissipation holes (15) are formed in side walls of two ends of the protective shell (3), and the inside of each heat dissipation hole (15) is fixedly connected with an anti-dust net (16);
the fixing device comprises a micro motor (25) installed inside a protective shell (3), a gear (26) is sleeved at the output end of the micro motor (25), a side plate (30) is fixedly connected inside the protective shell (3), a through groove (34) is formed inside the side plate (30), a first rack plate (27) and a second rack plate (29) are slidably connected inside the through groove (34), one end of the first rack plate (27) is fixedly connected with a mounting plate (28), and a relay body (24) is installed at one end of the mounting plate (28);
the wire-off preventing device comprises a fixing rod (32) fixedly connected with one end of a second rack plate (29), one end of the fixing rod (32) is fixedly connected with a movable plate (31), a limiting groove (36) is formed in one end of the movable plate (31), the limiting groove (36) is connected with a fixing column (38) in a sliding mode, and one end of the fixing column (38) is fixedly connected with a clamping plate (39).
2. An overcurrent protection relay according to claim 1, wherein: the wire inlet plate (40) is fixedly connected to the inside of the protective shell (3), a plurality of clamping grooves (41) distributed at equal intervals are formed in one end of the wire inlet plate (40), and the clamping plates (39) are connected with the clamping grooves (41) in a matched mode.
3. An overcurrent protection relay according to claim 1, wherein: the top end of the fixed column (38) is fixedly connected with one end of a third spring (37), the other end of the third spring (37) is fixedly connected with one end of a pull rod (35), and the pull rod (35) is connected inside the limiting groove (36) in a sliding mode.
4. An overcurrent protection relay according to claim 3, wherein: the pull rod (35) is I-shaped, and a third spring (37) fixedly connected with one end of the pull rod (35) is sleeved inside the limiting groove (36).
5. An overcurrent protection relay according to claim 1, wherein: the top fixed connection solid fixed cylinder (7) of bottom plate (4), and inside sliding connection slider (8) of solid fixed cylinder (7), one end fixed connection connecting rod (10) of slider (8), first spring (9) are cup jointed in the outside of connecting rod (10), the bottom center of the one end fixed connection fixed plate (14) of connecting rod (10).
6. An overcurrent protection relay according to claim 1, wherein: one end of the second connecting rod (501) is fixedly connected with the connecting block (12), one end of the connecting block (12) is fixedly connected with one end of the second spring (11), and the other end of the second spring (11) is fixedly connected with the side wall of the fixed cylinder (7).
7. An overcurrent protection relay according to claim 1, wherein: the air inlet that has the equidistance and distributes is opened to the one end of side cap (17), and the inside of side cap (17) is opened has heat dissipation chamber (21), and the one end intercommunication louvre (15) in heat dissipation chamber (21), and the inside intercommunication refrigeration pipe (19) in heat dissipation chamber (21).
8. An overcurrent protection relay according to claim 1, wherein: two ends of the gear (26) are respectively meshed and connected with one end of the first rack plate (27) and one end of the second rack plate (29).
9. An overcurrent protection relay according to claim 1, wherein: the top of protective housing (3) is opened has inlet wire groove (33) that the equidistance distributes, and protective housing (3) sliding connection is in the inside of activity groove (2).
10. An overcurrent protection relay according to claim 1, wherein: both ends of the fixed rod (32) are in sliding connection with the through groove (34) in the side plate (30).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910747345.6A CN110444443B (en) | 2019-08-14 | 2019-08-14 | Overcurrent protection relay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910747345.6A CN110444443B (en) | 2019-08-14 | 2019-08-14 | Overcurrent protection relay |
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| CN110444443A CN110444443A (en) | 2019-11-12 |
| CN110444443B true CN110444443B (en) | 2021-07-09 |
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Effective date of registration: 20210608 Address after: 102600 in qiangaomidian Industrial Development Zone, Daxing District, Beijing Applicant after: BEIJING JINGYIBEIFANG INSTRUMENT Co.,Ltd. Address before: Nanjing University of Aeronautics and Astronautics, 29 Yudao street, Qinhuai District, Nanjing, Jiangsu Province, 210001 Applicant before: Jiang Chao |
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