CN214314869U - Protection device for permanent magnet synchronous motor - Google Patents

Abstract

The utility model belongs to the technical field of electrical equipment, concretely relates to protection device that PMSM used, including outer box and motor, outer box is equipped with the mounting panel, the mounting panel downside is equipped with the cooler bin, the cooler bin front end is equipped with the outlet pipe, it has the water-cooled tube to go out water piping connection, the cooler bin rear end is equipped with the inlet tube, the inlet tube is linked together with the water-cooled tube, outer box one side is equipped with the bar groove, outer box is equipped with first switch door, outer box lower extreme one side is equipped with the regulating box, the inside rotation of regulating box is connected with first bull stick, first bull stick is equipped with the rotation handle, the first band pulley of first bull stick fixedly connected with, outer box downside rotates and is connected with the second bull stick, the second bull stick is equipped with the second band pulley, the second bull stick still is equipped with drive gear, drive gear is equipped with driven gear, driven gear is connected with the screw rod, the mounting panel rotates with the screw rod screw thread.

Description

Protection device for permanent magnet synchronous motor

Technical Field

The utility model belongs to the technical field of electrical equipment, concretely relates to protection device that PMSM used.

Background

The permanent magnet synchronous motor provides excitation by the permanent magnet, so that the structure of the motor is simpler, the processing and assembling cost is reduced, a collecting ring and an electric brush which are easy to cause problems are omitted, and the running reliability of the motor is improved; and because excitation current is not needed, excitation loss is avoided, and the efficiency and the power density of the motor are improved.

The starting and running of the permanent magnet synchronous motor are formed by the interaction of magnetic fields generated by a stator winding, a rotor cage winding and a permanent magnet. When the motor is static, three-phase symmetrical current is introduced into the stator winding to generate a stator rotating magnetic field, the stator rotating magnetic field generates current in the cage winding relative to the rotation of the rotor to form a rotor rotating magnetic field, and the asynchronous torque generated by the interaction of the stator rotating magnetic field and the rotor rotating magnetic field enables the rotor to rotate from the static state to the accelerated state.

When the debugging and the test operation of motor, generally need protect the motor, thereby avoid the motor to receive outside collision and lead to motor fault, but current motor adopts the box to protect usually, in the time of the function singleness, good thermal diffusivity does not have, the inconvenient effluvium of heat that produces in the motor operation, thereby make the easy overheated trouble that takes place of motor, and, the position of motor shaft is fixed unable regulation, when connecting external equipment and debugging and test operation, often need be according to external equipment's hookup location, place the motor on corresponding platform, make motor shaft and external equipment's hookup location level and smooth, height control is convenient inadequately.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the protection device for the permanent magnet synchronous motor is used for solving the problems that an existing motor is protected by a box body generally and does not have good heat dissipation performance, heat generated in the motor operation is inconvenient to dissipate, the motor is prone to overheating and breaks down, a motor rotating shaft is required to be placed on a corresponding platform according to the connection position of external equipment, the motor rotating shaft is enabled to be flat and smooth in connection position with the external equipment, and the height adjustment is not convenient enough.

In order to realize the technical purpose, the utility model discloses a technical scheme as follows:

a protection device for a permanent magnet synchronous motor comprises an outer box body and a motor, wherein a mounting plate is arranged in the outer box body, the motor is arranged on the upper side of the mounting plate, a cooling box is arranged on the lower side of the mounting plate, a water outlet pipe is arranged at the front end of the cooling box, the water outlet pipe upwards penetrates through the mounting plate and is connected with a water cooling pipe, the water cooling pipe is formed by connecting a plurality of S-shaped bent pipes, the water cooling pipe is annularly distributed and is matched with the surface of a motor body, a water inlet pipe is arranged at the rear end of the cooling box and is communicated with the water cooling pipe, a strip-shaped groove matched with a motor output shaft is arranged on one side of the outer box, a first switch door is arranged on one side of the outer box body opposite to the strip-shaped groove, an adjusting box is arranged on one side of the lower end of the outer box, a first rotating rod is rotatably connected in the adjusting box and penetrates through the adjusting box and is provided with a rotating handle, the vertical height size of the upper end of the rotating handle is smaller than that of the lower end of the first switch door, first bull stick fixedly connected with first band pulley, outer box downside rotates and is connected with the second bull stick, the second bull stick is equipped with first band pulley assorted second band pulley, be connected through belt transmission between first band pulley and the second band pulley, the second bull stick still is equipped with drive gear, drive gear all is equipped with driven gear around the both sides, two driven gear all meshes with drive gear mutually, two the equal fixedly connected with of driven gear is along the screw rod that outer box direction of height extends, the mounting panel both sides are connected with two screw rod screw thread rotations respectively.

By adopting the technical scheme of the utility model, the first switch door is opened to enable the motor rotating shaft to extend out of the strip-shaped groove, and meanwhile, the motor body is inserted into the water-cooling pipes which are distributed annularly, so that the water-cooling pipes are attached to the surface of the motor body, and the two ends of the water-cooling pipes are supported by the water outlet pipe and the water inlet pipe, so that the motor can be installed on the installation plate in the outer box body, the first switch door can be closed, and the motor can be protected by the outer box body;

people can drive the first rotating rod to rotate relative to the adjusting box by operating the rotating handle, meanwhile, the first rotating rod can drive the first belt wheel to rotate by rotating, the second rotating rod can rotate by the transmission fit of a belt between the first belt wheel and the second belt wheel, and further the transmission gear can rotate;

the cooling box works at the moment, so that cooling liquid flows into the water cooling pipe after flowing through the water outlet pipe, the cooling liquid absorbs the heat of the motor body, and the cooling liquid enters the cooling box through the water inlet pipe to be cooled again after the heat is absorbed, so that the temperature of the motor in the operation process can be effectively reduced, the motor is protected from overheating, and the motor is always in a good working state;

the utility model provides a current motor adopt the box to protect usually, do not have good thermal diffusivity, the inconvenient effluvium of heat that produces in the motor function to make the easy overheated emergence trouble of motor, and, motor shaft often need place the motor on corresponding platform according to external equipment's hookup location, make motor shaft level and smooth with external equipment's hookup location, altitude mixture control convenient problem inadequately.

Further inject, both sides all are equipped with the second switch door around the outer box, one first switch door and two second switch doors all are equipped with the switch handle. Such structure makes the first switch door of switching and second switch door that the people can be convenient, when opening two second switch doors, people can be more convenient install motor and mounting panel.

Further inject, two the second switch door all is equipped with a plurality of ventilation grooves, the ventilation groove is by the outside inside from the bottom up slope of outside box of second switch door. Such structure makes outer box internal portion can ventilate, has supplementary radiating effect to the motor, sets up the incline direction in ventilation groove to by the outside slope from the bottom up of outside to outer box of second switch door simultaneously, can prevent that outside dust from falling into outer box internal portion, has dustproof effect.

Further limit, the cooling box is also provided with a liquid filling port and a liquid discharging port. By adopting the structure, people can conveniently discharge the liquid in the cooling box and replace the liquid feeding.

Further inject, two the screw rod upper end all is equipped with the stopper. By the structure, the mounting plate can be limited in the lifting process, and the motor is prevented from colliding with the top of the outer box body.

Compared with the prior art, the utility model has the following advantages:

1. the motor can be protected by the outer box body, so that external collision is prevented, meanwhile, after heat generated by the motor is transferred to the motor body, the cooling box works, so that cooling liquid flows into the water cooling pipe after flowing through the water outlet pipe, the cooling liquid absorbs the heat of the motor body, and after the heat is absorbed, the cooling liquid enters the cooling box through the water inlet pipe to be cooled again;

2. the handle is rotated through the operation, drives first bull stick and rotates mutually, through belt drive cooperation between first band pulley and the second band pulley, can make the second bull stick take place to rotate, and then makes drive gear rotate and can take place to rotate two driven gear, drives two screw rods synchronous rotation, can make the mounting panel reciprocate for the screw rod at last, and the position about adjusting motor is at outer internal portion, makes the motor shaft can adapt to the not transmission hookup location of co-altitude.

Drawings

The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

fig. 1 is a schematic structural diagram of an embodiment of a protection device for a permanent magnet synchronous motor according to the present invention;

fig. 2 is a schematic view of an internal assembly structure of an embodiment of the protection device for a permanent magnet synchronous motor according to the present invention;

fig. 3 is a schematic view of a partial cross-sectional structure of an outer case of an embodiment of the protection device for a permanent magnet synchronous motor according to the present invention;

the main element symbols are as follows:

the water cooling device comprises an outer box body 1, an installation plate 11, a cooling box 111, a liquid filling opening 1111, a liquid discharging opening 1112, a water outlet pipe 112, a water cooling pipe 113, a water inlet pipe 114, a strip-shaped groove 12, a first switch door 13, a second rotating rod 14, a second belt wheel 141, a transmission gear 142, a driven gear 15, a screw rod 151, a limiting block 152, a second switch door 16, a switch handle 161, a ventilation groove 162, a motor 2, an adjusting box 3, a first rotating rod 31, a rotating handle 311 and a first belt wheel 312.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.

As shown in figures 1-3, the utility model discloses a protection device for permanent magnet synchronous motor, which comprises an outer box body 1 and a motor 2, wherein a mounting plate 11 is arranged inside the outer box body 1, the motor 2 is arranged on the upper side of the mounting plate 11, a cooling box 111 is arranged on the lower side of the mounting plate 11, a water outlet pipe 112 is arranged at the front end of the cooling box 111, the water outlet pipe 112 upwards penetrates through the mounting plate 11 and is connected with a water cooling pipe 113, the water cooling pipe 113 is formed by connecting a plurality of S-shaped bent pipes, the water cooling pipe 113 is annularly distributed and is matched with the surface of the body of the motor 2, a water inlet pipe 114 is arranged at the rear end of the cooling box 111, the water inlet pipe 114 is communicated with the water cooling pipe 113, a strip-shaped groove 12 matched with the output shaft of the motor 2 is arranged at one side of the outer box body 1, a first switch door 13 is arranged at one side opposite to the strip-shaped groove 12, an adjusting box 3 is arranged at one side of the lower end of the outer box body 1, a first rotating rod 31 is rotatably connected inside the adjusting box 3, first bull stick 31 runs through adjusting box 3 and is equipped with rotation handle 311, the vertical height dimension of rotation handle 311 upper end is less than the vertical height dimension of first switch door 13 lower extreme, first bull stick 31 fixedly connected with first band pulley 312, outer box 1 downside is rotated and is connected with second bull stick 14, second bull stick 14 is equipped with the second band pulley 141 with first band pulley 312 assorted, be connected through belt transmission between first band pulley 312 and the second band pulley 141, second bull stick 14 still is equipped with drive gear 142, drive gear 142 front and back both sides all are equipped with driven gear 15, two driven gear 15 all mesh with drive gear 142 mutually, two equal fixedly connected with of driven gear 15 are along the screw rod 151 that outer box 1 direction of height extends, mounting panel 11 both sides are connected with two screw rod 151 screw threads rotation respectively.

By adopting the technical scheme of the utility model, the first switch door 13 is opened, the rotating shaft of the motor 2 is extended out of the strip-shaped groove 12, meanwhile, the body of the motor 2 is inserted into the water-cooling pipe 113 which is distributed annularly, the surface of the water-cooling pipe 113 is attached to the body of the motor 2, two ends of the water-cooling pipe 113 are supported by the water outlet pipe 112 and the water inlet pipe 114, the motor 2 can be arranged on the mounting plate 11 in the outer box 1, the first switch door 13 can be closed, and the motor 2 can be protected by the outer box 1;

by operating the rotating handle 311, the first rotating rod 31 can be driven to rotate relative to the adjusting box 3, meanwhile, the rotation of the first rotating rod 31 drives the first belt pulley 312 to rotate, and the belt transmission fit between the first belt pulley 312 and the second belt pulley 141 can enable the second rotating rod 14 to rotate, so that the transmission gear 142 rotates, when the transmission gear 142 rotates, since the two driven gears 15 are engaged with the transmission gear 142, the two driven gears 15 are rotated, thereby driving the two screws 151 to synchronously rotate relative to the mounting plate 11, and because the two sides of the mounting plate 11 are rotatably connected with the two screws 151 through threads, the mounting plate 11 can move up and down relative to the screws 151, therefore, the up-down position of the motor 2 in the outer box body 1 can be adjusted, and the rotating shaft of the motor 2 can adapt to the connecting positions of the rotating shafts with different heights;

the heat generated by the motor 2 in the operation process is transferred to the body of the motor 2, at the moment, the cooling box 111 works, so that the cooling liquid flows into the water cooling pipe 113 after flowing through the water outlet pipe 112, the cooling liquid absorbs the heat of the body of the motor 2, and after the heat is absorbed, the cooling liquid enters the cooling box 111 through the water inlet pipe 114 to be cooled again, and the steps are repeated, so that the temperature of the motor 2 in the operation process can be effectively reduced, the motor 2 is protected from overheating, and the motor 2 is always in a good working state;

the utility model provides a current motor adopt the box to protect usually, do not have good thermal diffusivity, the inconvenient effluvium of heat that produces in the motor function to make the easy overheated emergence trouble of motor, and, motor shaft often need place the motor on corresponding platform according to external equipment's hookup location, make motor shaft level and smooth with external equipment's hookup location, altitude mixture control convenient problem inadequately.

Specifically, both sides all are equipped with second switch door 16 around outer box 1, and a first switch door 13 and two second switch doors 16 all are equipped with switch handle 161. With the structure, people can conveniently open and close the first switch door 13 and the second switch door 16, and when the two second switch doors 16 are opened, people can more conveniently install the motor 2 and the mounting plate 11. In fact, other configurations may be used as appropriate, so that the motor 2 can be mounted to the outer case 1 by easily opening and closing the outer case.

Specifically, two second switch doors 16 all are equipped with a plurality of ventilation grooves 162, and ventilation grooves 162 are by the outside inside from the bottom up slope of box 1 of second switch door 16. Such a structure makes outer box 1 inside can ventilate, has supplementary radiating effect to motor 2, sets up the incline direction of ventilation groove 162 to by the outside slope from the bottom up to the inside of outer box 1 of second switch door 16 simultaneously, can prevent that outside dust from falling into outer box 1 inside, has dustproof effect. In fact, other configurations may be used as appropriate, so that the interior of the outer case 1 can be ventilated and air-permeable, and dust can be prevented from entering.

Specifically, the cooling tank 111 is further provided with a liquid charging port 1111 and a liquid discharging port 1112. With the structure, people can conveniently discharge the liquid in the cooling box 111 and replace the liquid. In fact, other configurations are also contemplated as appropriate to allow one to easily drain and replace the liquid in the cooling tank 111.

Specifically, the upper ends of the two screws 151 are provided with limit blocks 152. With the structure, the mounting plate 11 can be limited in the lifting process, and the motor 2 is prevented from colliding with the top of the outer box 1. In fact, other structures can be considered according to the situation, so that the mounting plate 11 can be limited in the process of rising, and the motor 2 is prevented from colliding with the top of the outer box 1.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (5)

1. The utility model provides a protection device that PMSM used, includes outer box (1) and motor (2), outer box (1) inside mounting panel (11) that is equipped with, install in mounting panel (11) upside motor (2), mounting panel (11) downside is equipped with cooler bin (111), its characterized in that: the cooling box is characterized in that an outlet pipe (112) is arranged at the front end of the cooling box (111), the outlet pipe (112) upwards penetrates through a mounting plate (11) and is connected with a water-cooled pipe (113), the water-cooled pipe (113) is formed by connecting a plurality of S-shaped bent pipes, the water-cooled pipe (113) is distributed in an annular mode and is matched with the surface of a machine body of the motor (2), an inlet pipe (114) is arranged at the rear end of the cooling box (111), the inlet pipe (114) is communicated with the water-cooled pipe (113), a strip-shaped groove (12) matched with an output shaft of the motor (2) is arranged on one side of the outer box (1), a first switch door (13) is arranged on one side of the outer box (1) opposite to the strip-shaped groove (12), an adjusting box (3) is arranged on one side of the lower end of the outer box (1), a first rotating rod (31) is rotatably connected with the inside the adjusting box (3), and a rotating handle (311) is arranged on the first rotating rod (31) by penetrating through the adjusting box (3), the vertical height dimension of the upper end of the rotating handle (311) is smaller than that of the lower end of the first switch door (13), the first rotating rod (31) is fixedly connected with a first belt wheel (312), the lower side of the outer box body (1) is rotatably connected with a second rotating rod (14), the second rotating rod (14) is provided with a second belt wheel (141) matched with the first belt wheel (312), the first belt wheel (312) is in transmission connection with the second belt wheel (141) through a belt, the second rotating rod (14) is also provided with a transmission gear (142), the front side and the rear side of the transmission gear (142) are respectively provided with a driven gear (15), the two driven gears (15) are respectively meshed with the transmission gear (142), the two driven gears (15) are respectively and fixedly connected with a screw rod (151) extending along the height direction of the outer box body (1), the two sides of the mounting plate (11) are respectively in threaded rotary connection with the two screw rods (151).

2. The protection device for a permanent magnet synchronous motor according to claim 1, characterized in that: both sides all are equipped with second switch door (16) around outer box (1), one first switch door (13) and two second switch doors (16) all are equipped with switch handle (161).

3. The protection device for a permanent magnet synchronous motor according to claim 2, characterized in that: two second switch door (16) all are equipped with a plurality of ventilation grooves (162), ventilation grooves (162) are by the outside inside from the bottom up slope of box (1) of second switch door (16).

4. The protection device for a permanent magnet synchronous motor according to claim 1, characterized in that: the cooling box (111) is also provided with a liquid filling port (1111) and a liquid discharging port (1112).

5. The protection device for a permanent magnet synchronous motor according to claim 1, characterized in that: two screw rod (151) upper end all is equipped with stopper (152).

Images