CN212137270U

CN212137270U - Phase-failure protector for AC motor

Info

Publication number: CN212137270U
Application number: CN202020940088.6U
Authority: CN
Inventors: 霍江宁; 吴明辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2020-12-11
Anticipated expiration: 2030-05-28

Abstract

The utility model discloses an alternating current motor protector that loses phase, including lead screw, body and shell, the equal fixedly connected with fixed plate in bottom of body both sides, and the both ends on fixed plate top all are provided with the sleeve, be provided with the conducting strip between the both sides inner wall of body, and the bottom of conducting strip is provided with empty frid, the both sides on voltage sensor top all extend to the inside of electro-magnet, and the both sides on electro-magnet top all are provided with the connection piece, one side seted up the cavity, and the inside of cavity evenly is provided with the line hole, the both sides of the inside bottom of shell all are provided with damping spring, and damping spring's top fixedly connected with magnet. The utility model discloses a all be provided with the lead screw on telescopic top, and the bottom of lead screw all extends to the below of fixed plate, and splint are all installed to the bottom of lead screw, and this structure has realized the quick installation function of device, is favorable to alleviateing workman's burden.

Description

Phase-failure protector for AC motor

Technical Field

The utility model relates to a phase failure protector technical field specifically is an alternating current motor phase failure protector.

Background

Open-phase protectors are protective devices that rely on the disappearance of current in one phase conductor of a multi-phase circuit to open a protected apparatus or on the loss of voltage in one or several phases of a multi-phase system to prevent the application of power to the protected apparatus. The existing phase failure protector for the alternating current motor has a plurality of defects.

The first and the traditional AC motor phase failure protectors have large device size, are inconvenient for users to use, and have troublesome phase failure process inside the device;

the second and the traditional AC motor phase failure protectors have poor applicability, and for motors with different powers, different auxiliary electrical appliances are needed to assist in phase failure, which wastes time and labor;

third, the phase failure protector of the traditional alternating current motor does not have the heat dissipation function, and the device has the long-time function, and is easy to accumulate heat inside, thereby causing the damage of the device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an alternating current motor protector that loses phase to it is bulky to solve the volume that proposes in the above-mentioned background art, is not convenient for use, the relatively poor and heat dissipation function's of suitability problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an alternating current motor protector that loses phase, includes lead screw, body and shell, its characterized in that: the bottom ends of the two sides of the body are fixedly connected with a fixed plate, the two ends of the top end of the fixed plate are respectively provided with a sleeve, the bottom end of each sleeve extends into the fixed plate, the top end of the body is provided with a shell, the top end of one side of the shell is fixedly provided with a single chip microcomputer, the lower part of the single chip microcomputer on one side of the shell is fixedly connected with a connecting plate, one side of the bottom end of the connecting plate is fixedly provided with a protective shell, the interior of the protective shell is uniformly provided with a capacitor through a mounting part, the two sides of the capacitor extend to one side of the protective shell, one side of the body above the fixed plate is provided with a connecting mechanism, a heat conducting fin is arranged between the inner walls of the two sides of the body, the bottom end of the heat conducting fin is provided with a slotted plate, the bottom end of, the utility model discloses a damping spring's electromagnetic sensor, including shell, voltage sensor, electromagnet, connecting piece, cavity, wire hole, end, magnet bottom, end, the both sides on voltage sensor top all extend to the inside of electro-magnet, and the both sides on electro-magnet top all are provided with the connection piece, the top of connection piece all extends to the inside of shell, the cavity has been seted up to one side of electro-magnet, and the inside of cavity evenly is provided with the line hole, the opposite side of electro-magnet is provided with the earth connection, and one side of earth connection extends to one side of body, the both sides of the inside bottom of shell all are provided with damping spring, and damping spring's top fixedly connected with magnet, the both sides of magnet bottom all are provided with the end.

Preferably, the heat-conducting fin bottom hollow groove plate is internally provided with heat-radiating fins, and a filter screen is arranged between the inner walls of two sides of the hollow groove plate below the heat-radiating fins.

Preferably, the connecting mechanism is internally provided with a connecting sleeve, a connecting line hole, a threaded nail and an inserting hole in sequence, the connecting sleeve is arranged on one side of the body above the fixing plate, the connecting line hole is uniformly formed in the connecting sleeve, and the inserting hole is formed in the connecting sleeve at the top end of the connecting line hole.

Preferably, the top of jack all is provided with the screw, and the bottom of screw all extends to the inside in line hole.

Preferably, the telescopic top all is provided with the lead screw, and the bottom of lead screw all extends to the below of fixed plate, splint are all installed to the bottom of lead screw.

Preferably, the both sides of sleeve below body all are provided with the limiting plate, the spacing groove has all been seted up to one side of fixed plate below lead screw, and one side of limiting plate all extends to the inside of spacing groove.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) by installing the limiting plate, the limiting groove, the clamping plate, the body, the sleeve and the lead screw, the device is firstly installed, the device is firstly placed on the installation platform, then the sleeve is rotated, the lead screw can move under the matching of the internal thread of the sleeve and the external thread of the lead screw, and meanwhile, under the matching of the limiting plate and the limiting groove, the lead screw can be prevented from being deviated, so that the installation platform can be quickly clamped at the bottom ends of the clamping plate and the body, the device can be quickly installed, and the structure realizes the quick installation function of the device;

(2) by installing the wire connecting hole, the electromagnet, the wire hole, the screw thread, the magnet, the end head and the connecting sheet, the wire is inserted into the wire connecting hole until the wire is inserted into the wire hole of the electromagnet, then the screw nail is rotated to fix the conducting wires, when the device works, the three conducting wires are electrified simultaneously, the electromagnet can be electrified to generate magnetism to attract the magnet, so that the end head is contacted with the connecting sheet and is in a communicated state, the damping spring is deformed when the magnet moves, the extending block moves, the display device is in a normal working state, when one lead is in a power-off state, the electromagnet is powered off and loses magnetism, under the reaction force of the damping spring, the magnet is bounced open, the end is separated from the connecting sheet, the extending block is restored to the original state, the working state of the device is displayed, and the structure realizes the portable phase failure function of the device;

(3) through installing conducting strip, heat radiation fins and filter screen, when the device worked for a long time, the device was inside to accumulate a large amount of heats easily, and the conducting strip can conduct the heat, reaches heat radiation fins, and heat radiation fins can increase the heat radiating area of device, dispels the heat to the device fast, and the filter screen can prevent that external dust from entering into the inside of device, causes the damage to the device, and this structure has realized the quick heat dissipation function of device.

Drawings

FIG. 1 is a schematic side view, cross-sectional structural view of the apparatus of the present invention;

FIG. 2 is a schematic side view of the device of the present invention;

FIG. 3 is a schematic top view of the apparatus of the present invention;

FIG. 4 is a schematic view of the front view of the device of the present invention;

FIG. 5 is a schematic diagram of a side view of the electromagnet of the present invention;

fig. 6 is an enlarged schematic structural diagram of fig. 1A of the present invention.

In the figure: 1. a limiting plate; 2. a splint; 3. a heat conductive sheet; 4. heat dissipation fins; 5. a filter screen; 6. a hollow groove plate; 7. a limiting groove; 8. a screw rod; 9. a connecting mechanism; 901. connecting sleeves; 902. a wire connecting hole; 903. a threaded nail; 904. a jack; 10. a fixing plate; 11. a sleeve; 12. a body; 13. an electromagnet; 14. connecting sheets; 15. a tip; 16. an extension block; 17. a damping spring; 18. a magnet; 19. a housing; 20. a cavity; 21. a wire hole; 22. a voltage sensor; 23. a single chip microcomputer; 24. a connecting plate; 25. a capacitor; 26. a protective shell; 27. and a ground line.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides an embodiment: a phase failure protector of an alternating current motor comprises a lead screw 8, a body 12 and a shell 19, wherein the bottom ends of two sides of the body 12 are fixedly connected with a fixing plate 10, two ends of the top end of the fixing plate 10 are respectively provided with a sleeve 11, and the bottom end of each sleeve 11 extends into the fixing plate 10;

the top ends of the sleeves 11 are provided with screw rods 8, the bottom ends of the screw rods 8 extend to the lower part of the fixing plate 10, and the bottom ends of the screw rods 8 are provided with clamping plates 2;

specifically, as shown in fig. 1 and 2, when the mechanism is used, firstly, the sleeve 11 is rotated, the screw rod 8 can be moved under the matching of the internal thread of the sleeve 11 and the external thread of the screw rod 8, so that the bottom ends of the clamp plate 2 and the body 12 can rapidly clamp the mounting platform, and the device can be rapidly mounted;

limiting plates 1 are arranged on two sides of a body 12 below a sleeve 11, a limiting groove 7 is formed in one side of a screw rod 8 below a fixing plate 10, and one side of each limiting plate 1 extends into the limiting groove 7;

specifically, as shown in fig. 1, when the mechanism is used, firstly, under the matching of the limit plate 1 and the limit groove 7, the lead screw 8 can be prevented from deviating;

the top end of the body 12 is provided with a shell 19, the top end of one side of the shell 19 is fixedly provided with a single chip microcomputer 23, the type of the single chip microcomputer 23 can be AT89S51, a connecting plate 24 is fixedly connected below the single chip microcomputer 23 on one side of the shell 19, a protective shell 26 is fixedly arranged on one side of the bottom end of the connecting plate 24, capacitors 25 are uniformly arranged in the protective shell 26 through mounting pieces, two sides of each capacitor 25 extend to one side of the protective shell 26, and one side of the body 12 above the fixing plate 10 is provided with a connecting mechanism 9;

a connecting sleeve 901, a connecting line hole 902, a threaded nail 903 and a jack 904 are sequentially arranged in the connecting mechanism 9, the connecting sleeve 901 is arranged on one side of the body 12 above the fixing plate 10, the connecting line holes 902 are uniformly formed in the connecting sleeve 901, and the jacks 904 are formed in the connecting sleeve 901 at the top ends of the connecting line holes 902;

specifically, as shown in fig. 1, 2 and 4, when this mechanism is used, first, a wire is inserted into the wiring hole 902 until the wire is inserted into the wire hole 21 of the electromagnet 13;

the top ends of the jacks 904 are provided with screw nails 903, and the bottom ends of the screw nails 903 extend into the connecting holes 902;

specifically, as shown in fig. 1, 2 and 4, when using this mechanism, first, the screw 903 can perform a quick fixation function on the lead;

a heat conducting fin 3 is arranged between the inner walls of the two sides of the body 12, a hollow groove plate 6 is arranged at the bottom end of the heat conducting fin 3, and the bottom end of the hollow groove plate 6 extends to the bottom end of the body 12;

heat radiation fins 4 are arranged inside the hollow groove plate 6 at the bottom end of the heat conduction sheet 3, and a filter screen 5 is arranged between the inner walls of the two sides of the hollow groove plate 6 below the heat radiation fins 4;

specifically, as shown in fig. 1, when the mechanism is used, firstly, the heat conducting sheet 3 can conduct heat to the heat radiating fins 4, the heat radiating fins 4 can increase the heat radiating area of the device to quickly radiate the heat of the device, and the filter screen 5 can prevent external dust from entering the device to damage the device;

a voltage sensor 22 is fixedly installed at the top end of the heat conducting strip 3, the type of the voltage sensor 22 can be L100, an electromagnet 13 is arranged between the inner walls of the two sides of the body 12 above the voltage sensor 22, the two sides of the top end of the voltage sensor 22 extend into the electromagnet 13, connecting pieces 14 are arranged at the two sides of the top end of the electromagnet 13, the top end of each connecting piece 14 extends into the shell 19, a cavity 20 is formed in one side of the electromagnet 13, wire holes 21 are uniformly formed in the cavity 20, a grounding wire 27 is arranged at the other side of the electromagnet 13, one side of the grounding wire 27 extends into one side of the body 12, damping springs 17 are arranged at the two sides of the bottom end in the shell 19, a magnet 18 is fixedly connected to the top end of each damping spring 17, end terminals 15 are arranged at the two sides of the bottom end of the magnet 18, the bottom end of each connecting piece 15 is, and the top ends of the extension blocks 16 extend to the top end of the housing 19.

The working principle is as follows: during the use, install the device earlier, place the device on mounting platform earlier, rotate sleeve 11 after that, under the cooperation of 11 internal threads of sleeve and 8 external threads of lead screw, can make 8 emergence removals of lead screw, simultaneously under the cooperation of limiting plate 1 and spacing groove 7, can prevent that 8 emergence squints of lead screw for splint 2 and body 12's bottom carry out quick centre gripping with mounting platform, can carry out quick installation function with the device.

Then, the grounding wire 27 is grounded, the three-phase circuit is respectively inserted into three capacitors 25 with equal capacitance, then the other end of the capacitor 25 is connected by a conducting wire, and then the three conducting wires extend into the connecting wire hole 902 until the conducting wire is inserted into the wire hole 21 of the electromagnet 13, then the threaded screw 903 is rotated to fix the conducting wire, when the device works, the three conducting wires are simultaneously electrified, namely the electromagnet 13 is electrified to generate magnetism to attract the magnet 18, the voltage sensor 22 receives a signal when the electromagnet is electrified, when the voltage exceeds a set value, the signal can be transmitted to the singlechip 23, the singlechip 23 controls the signal to cut off the electromagnet 13, if the voltage is normal, the end head 15 and the connecting sheet 14 can be contacted and are in a connected state, the damping spring 17 is deformed when the magnet 18 moves, the extending block 16 moves, and the display device is in a normal working state, when the condition of power failure appears in one phase, the condition of phase failure occurs, the symmetry is destroyed, the electromagnet 13 is powered off and loses magnetism, under the reaction force of the damping spring 17, the magnet 18 is bounced open, the end 15 is separated from the connecting sheet 14, the extending block 16 is restored to the original state, the working state of the display device is displayed, and the motor can be separated from a three-phase power supply.

Finally, when the device works for a long time, a large amount of heat is easily accumulated in the device, the heat conducting fins 3 can conduct the heat and conduct the heat to the heat radiating fins 4, the heat radiating fins 4 can increase the heat radiating area of the device and quickly radiate the device, and the filter screen 5 can prevent external dust from entering the device and damaging the device.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an alternating current motor protector that loses phase, includes lead screw (8), body (12) and shell (19), its characterized in that: the bottom of the two sides of the body (12) is fixedly connected with a fixing plate (10), the two ends of the top end of the fixing plate (10) are respectively provided with a sleeve (11), the bottom end of each sleeve (11) extends into the fixing plate (10), the top end of the body (12) is provided with a shell (19), the top end of one side of each shell (19) is fixedly provided with a single chip microcomputer (23), the lower part of the single chip microcomputer (23) on one side of each shell (19) is fixedly connected with a connecting plate (24), one side of the bottom end of each connecting plate (24) is fixedly provided with a protective shell (26), the inner part of each protective shell (26) is uniformly provided with a capacitor (25) through a mounting piece, the two sides of each capacitor (25) extend to one side of each protective shell (26), one side of the body (12) above the fixing plate (10) is provided with a connecting mechanism (, a hollow groove plate (6) is arranged at the bottom end of the heat conducting strip (3), the bottom end of the hollow groove plate (6) extends to the bottom end of the body (12), a voltage sensor (22) is fixedly arranged at the top end of the heat conducting strip (3), an electromagnet (13) is arranged between the inner walls of the two sides of the body (12) above the voltage sensor (22), the two sides of the top end of the voltage sensor (22) extend to the inside of the electromagnet (13), connecting pieces (14) are arranged at the two sides of the top end of the electromagnet (13), the top end of each connecting piece (14) extends to the inside of the shell (19), a cavity (20) is formed in one side of the electromagnet (13), wire holes (21) are uniformly formed in the cavity (20), a grounding wire (27) is arranged on the other side of the electromagnet (13), and one side of the grounding wire (27) extends to one side of the body, the both sides of the inside bottom of shell (19) all are provided with damping spring (17), and the top fixedly connected with magnet (18) of damping spring (17), the both sides of magnet (18) bottom all are provided with end (15), and the bottom of end (15) all connects in the top of connection piece (14), the both sides on magnet (18) top all are provided with and extend piece (16), and extend the top of piece (16) and all extend to the top of shell (19).

2. An ac motor phase loss protector according to claim 1, wherein: the heat-conducting fin is characterized in that heat-radiating fins (4) are arranged inside the hollow groove plate (6) at the bottom end of the heat-conducting fin (3), and a filter screen (5) is arranged between the inner walls of the two sides of the hollow groove plate (6) below the heat-radiating fins (4).

3. An ac motor phase loss protector according to claim 1, wherein: the connecting mechanism is characterized in that a connecting sleeve (901), a connecting line hole (902), a threaded nail (903) and a jack (904) are sequentially arranged inside the connecting mechanism (9), the connecting sleeve (901) is arranged on one side of the body (12) above the fixing plate (10), the connecting line hole (902) is uniformly formed inside the connecting sleeve (901), and the jack (904) is formed inside the connecting sleeve (901) at the top end of the connecting line hole (902).

4. An ac motor phase loss protector according to claim 3, wherein: the top of jack (904) all is provided with screw (903), and the bottom of screw (903) all extends to the inside of line hole (902).

5. An ac motor phase loss protector according to claim 1, wherein: the top of sleeve (11) all is provided with lead screw (8), and the bottom of lead screw (8) all extends to the below of fixed plate (10), splint (2) are all installed to the bottom of lead screw (8).

6. An ac motor phase loss protector according to claim 1, wherein: the two sides of the body (12) below the sleeve (11) are provided with the limiting plates (1), the limiting grooves (7) are formed in one sides of the screw rods (8) below the fixing plates (10), and one sides of the limiting plates (1) extend to the inner portions of the limiting grooves (7).