CN212486274U - Flame-proof type planetary speed reduction and frequency conversion permanent magnet synchronous all-in-one machine - Google Patents

Abstract

The utility model provides a synchronous all-in-one of flame proof formula planet speed reduction and frequency conversion permanent magnetism, belongs to motor technical field to it is big to solve current speed reduction frequency conversion all-in-one heat dissipation demand, and it is bad easily to exist the heat dissipation, thereby influences the reliability of motor, and ordinary asynchronous motor is not only inefficiency, loss big, and the use occasion is limited moreover, can not be applicable to the problem of the special environment of colliery explosion-proof. The utility model discloses a motor, planetary reducer, converter and converter terminal box, the motor is PMSM, is equipped with lead wire entry and lead wire export on the converter terminal box, the lead wire exit is equipped with flame proof glan head, is equipped with the converter in the converter terminal box, and the fixed casing side that sets up at PMSM of converter terminal box, and the processing of the lead wire entrance of converter terminal box has the notch, and the notch of converter terminal box and the last flange of PMSM cooperate and form the flame proof fitting surface. The utility model is suitable for an inflammable and explosive occasion.

Description

Flame-proof type planetary speed reduction and frequency conversion permanent magnet synchronous all-in-one machine

Technical Field

The utility model relates to a gear motor all-in-one, concretely relates to synchronous all-in-one of planet speed reduction and frequency conversion permanent magnetism belongs to motor technical field.

Background

The driving mode of the coal mine special high-torque load basically has two modes: firstly, in the mode of 'asynchronous motor + fluid coupling + brake + speed reducer', the transmission chain of the whole transmission system is longer and is an independent system, so that the number of potential fault nodes is large, the occupied space is large, and the use and the maintenance are inconvenient; and secondly, a permanent magnet direct drive motor driven by the frequency converter is directly connected with a load, and the direct drive permanent magnet synchronous motor of the transmission system has the advantages of large volume, high weight and small output per unit volume, is used under the working condition of mining and needs to be provided with a safe room for the frequency converter independently. The transmission system is not beneficial to being used in a narrow space, the distance between the frequency converter and the motor load is far, the harmonic waves at the input end of the motor are increased due to the inductors and the capacitors which are distributed in the cables in a stray mode, high-frequency damping oscillation and overvoltage are generated at the input end of the motor, insulation breakdown of the motor or the cables is accelerated, the reliability and the operation efficiency of the motor transmission system are reduced, and the application range of the low-speed large-torque permanent magnet synchronous motor is limited to a certain extent.

The existing speed reduction and frequency conversion integrated machine is mostly in a mode of 'a common asynchronous motor + a planetary reducer + a frequency converter', due to the structure of the integrated machine, the whole system is large in heat dissipation requirement, and the problem of poor heat dissipation is easy to exist, so that the reliability of a motor is influenced, and the common asynchronous motor is not only low in efficiency and large in loss, but also limited in use occasion and cannot be suitable for the special explosion-proof environment of a coal mine.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a it is big to solve current speed reduction frequency conversion all-in-one heat dissipation demand, and it is bad easily to exist the heat dissipation to influence the reliability of motor, and ordinary asynchronous motor not only inefficiency, loss are big, and the use occasion is limited moreover, can not be applicable to the problem of the explosion-proof special environment in colliery, and provide a synchronous all-in-one of flame proof formula planet speed reduction and frequency conversion permanent magnetism.

The utility model discloses a solve the technical scheme that above-mentioned technical problem took and be:

an explosion-proof planetary reduction and frequency conversion permanent magnet synchronous all-in-one machine comprises a motor, a planetary reducer, a frequency converter and a frequency converter junction box, the motor is a permanent magnet synchronous motor, a lead inlet and a lead outlet are arranged on a junction box of the frequency converter, the explosion-proof gland head is arranged at the outlet of the lead, the frequency converter is arranged in the frequency converter junction box, the frequency converter junction box is fixedly arranged on the side surface of the shell of the permanent magnet synchronous motor, and the lead wire entrance of converter terminal box is processed there is the notch, and the notch of converter terminal box cooperatees with the flange on the PMSM and forms the flame proof fitting surface, and through the key-type connection between PMSM's the axle head and planetary reducer's the input shaft cover, fixed connection between PMSM's the casing and planetary reducer's the casing, the winding is equipped with snakelike cooling channel on PMSM's the casing, is equipped with delivery port and water inlet on the snakelike cooling channel.

Further, PMSM's casing includes endotheca, overcoat, base, two end plates, two rings and a plurality of parting bead, and the overcoat overlaps on the endotheca and the two is certain clearance setting, and the both ends of endotheca and overcoat are the rigid coupling respectively has an end plate, and the overcoat is in the same place with the base rigid coupling, and fixed being equipped with two rings that are the determining deviation between overcoat and the endotheca is equipped with a plurality of staggered arrangement and the parting bead that is parallel to each other between two rings, forms snakelike cooling channel between endotheca, overcoat, two rings and a plurality of parting bead.

Furthermore, the shell of the permanent magnet synchronous motor further comprises a flange, the flange is fixedly connected to the top of the outer sleeve and fixedly connected with the frequency converter junction box, and a notch of the frequency converter junction box and an end plate are matched with each other to form an explosion-proof matching surface.

Furthermore, a water drainage opening is also formed in the serpentine cooling channel.

Furthermore, a reactor junction box is further arranged on one side of the frequency converter junction box, a reactor is arranged in the reactor junction box, and a high-voltage cable connector and a low-voltage cable connector are arranged on the reactor junction box.

Further, the reactor junction box is located on the side of the shell of the permanent magnet synchronous motor.

Compared with the prior art, the utility model following beneficial effect has:

the utility model discloses the lead wire entry of converter terminal box cooperatees with the flange on the motor casing and forms the flame proof face to the lead wire export is equipped with flame proof glan head, in order to use in the colliery occasion and play the flame proof effect. The utility model discloses the casing of motor encircles all around and is equipped with snakelike cooling channel, leads to water in snakelike cooling channel, makes the motor dispel the heat all around soon to solve motor, planetary reducer, the integrated big problem that dispels the heat together of converter.

Drawings

Fig. 1 is an isometric view of the present invention;

fig. 2 is an internal schematic view of the inverter terminal block 4;

fig. 3 is a schematic diagram of the reactor terminal box 6;

FIG. 4 is a schematic view of the distribution of the ring G5 and the division bars G6 on the outer surface of the inner sheath G1;

FIG. 5 is a plan expanded view of FIG. 4;

FIG. 6 is a side view of FIG. 4;

fig. 7 is a front view of a housing of the permanent magnet synchronous motor;

fig. 8 is a top view of fig. 7.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.

Example 1: as shown in fig. 1-2, this embodiment relates to a flameproof planetary reduction and frequency conversion permanent magnet synchronous all-in-one machine, which includes a motor 1, a planetary reducer 2, a frequency converter 3 and a frequency converter terminal box 4, where the motor 1 is a permanent magnet synchronous motor, the frequency converter terminal box 4 is provided with a lead inlet and a lead outlet, the lead outlet is provided with a flameproof glan head 4-1, the frequency converter 3 is led out from the flameproof glan head 4-1, a three-phase line inside the motor 1 is led out from the lead inlet and connected with a three-phase line inlet end of the frequency converter 3, the frequency converter 3 is arranged in the frequency converter terminal box 4, the frequency converter terminal box 4 is fixedly arranged on a side surface of a casing G of the permanent magnet synchronous motor, a notch 4-2 is processed at the lead inlet of the frequency converter terminal box 4, and the notch 4-2 on the frequency converter terminal, permanent magnet synchronous machine's axle head and planetary reducer 2's input shaft between the key-type connection, fixed connection between permanent magnet synchronous machine's casing G and planetary reducer 2's the casing, the winding is equipped with snakelike cooling channel K on permanent magnet synchronous machine's the casing G, is equipped with delivery port K1 and water inlet K2 on the snakelike cooling channel K.

Specifically, as shown in fig. 4-8, a housing G of the permanent magnet synchronous motor includes an inner housing G1, an outer housing G2, a base G3, two end plates G4, two rings G5, and a plurality of spacers G6, an outer housing G2 is sleeved on the inner housing G1 with a gap therebetween, two ends of the inner housing G1 and the outer housing G2 are respectively and fixedly connected with one end plate G4, the outer housing G2 is fixedly connected with the base G3, two rings G5 with a certain distance therebetween are fixedly disposed between the outer housing G2 and the inner housing G1, a plurality of spacers G6 which are arranged in a staggered manner and are parallel to each other are disposed between the two rings G5, the spacers G6 are distributed around the outer surface of the inner housing G1, a cooling channel K is formed between the inner housing G1, the outer housing G2, the two rings G5, and the plurality of serpentine spacers G6, cooling channel K has an inlet through which is filled with cooling water and is discharged from an outlet, which is beneficial for the inside of the.

Specifically, as shown in fig. 1 and 8, the housing G of the permanent magnet synchronous motor further includes a flange G7, the flange G7 is fixedly connected to the top of the outer sleeve G2, the flange G7 is fixedly connected to the frequency converter junction box 4, and the notch 4-2 of the frequency converter junction box 4 and one end plate G4 are mutually matched to form a flameproof matching surface.

As shown in fig. 7, a drain opening K3 is further provided on the serpentine cooling channel K for draining water during maintenance.

Specifically, as shown in fig. 3, a reactor junction box 6 is further disposed on one side of the frequency converter junction box 4, a reactor is disposed in the reactor junction box 6, and a high-voltage cable connector 6-1 and a low-voltage cable connector 6-2 are disposed on the reactor junction box 6. Reactor terminal box 6 is located PMSM's casing G's lateral part, and converter 3 and reactor all set up the lateral part at PMSM's casing G, reduce the utility model discloses an occupation space makes the structure compacter, is favorable to the heat dissipation more. The reactor junction box 6 and the frequency converter junction box 4 are communicated with each other to be used for wiring, an external main power line is connected with the reactor through a high-voltage cable connector 6-1, and the reactor is connected with the input port of the frequency converter 3 in series to reduce the influence of working harmonic waves of the frequency converter 3 on the motor. The low-voltage cable connector 6-2 is used as the output end of the control line and is directly connected with bearing temperature measurement, winding temperature measurement and a motor heating belt in the motor 1 through a wiring terminal, and state monitoring and maintenance are provided for the motor.

Claims (6)

1. The utility model provides a synchronous all-in-one of flame proof formula planet speed reduction and frequency conversion permanent magnetism, includes motor (1), planetary reducer (2), converter (3) and converter terminal box (4), its characterized in that: the motor (1) is a permanent magnet synchronous motor, a lead inlet and a lead outlet are arranged on a frequency converter junction box (4), an explosion-proof gland head (4-1) is arranged at the lead outlet, a frequency converter (3) is arranged in the frequency converter junction box (4), the frequency converter junction box (4) is fixedly arranged on the side surface of a shell (G) of the permanent magnet synchronous motor, a notch (4-2) is processed at the lead inlet of the frequency converter junction box (4), the notch (4-2) on the frequency converter junction box (4) is matched with the shell (G) on the permanent magnet synchronous motor to form an explosion-proof matching surface, a shaft end of the permanent magnet synchronous motor is in key connection with an input shaft sleeve of a planetary reducer (2), the shell (G) of the permanent magnet synchronous motor is fixedly connected with the shell of the planetary reducer (2), a snake-shaped cooling channel (K) is arranged on the shell (, the serpentine cooling channel (K) is provided with a water outlet (K1) and a water inlet (K2).

2. The flameproof planetary speed reduction and frequency conversion permanent magnet synchronous all-in-one machine according to claim 1, characterized in that: permanent magnet synchronous motor's casing (G) includes endotheca (G1), overcoat (G2), base (G3), two end plate (G4), two rings (G5) and a plurality of parting bead (G6), overcoat (G2) cover is on endotheca (G1) and the two is certain clearance setting, the both ends of endotheca (G1) and overcoat (G2) are the rigid coupling respectively have an end plate (G4), overcoat (G2) and base (G3) rigid coupling are in the same place, fixed being equipped with two rings (G5) that are certain interval between overcoat (G2) and endotheca (G1), be equipped with between two rings (G5) a plurality of crisscross arrangement and parallel parting bead (G6) each other, endotheca (G1), overcoat (G2), form snakelike cooling channel (K) between two rings (G5) and a plurality of parting bead (G6).

3. The flameproof planetary speed reduction and frequency conversion permanent magnet synchronous all-in-one machine according to claim 2, characterized in that: permanent magnet synchronous motor's casing (G) still includes flange (G7), and flange (G7) rigid coupling is in the top of overcoat (G2), flange (G7) and converter terminal box (4) fixed connection, notch (4-2) and an end plate (G4) of converter terminal box (4) mutually support and form the flame proof fitting surface.

4. The flameproof planetary speed reduction and frequency conversion permanent magnet synchronous all-in-one machine according to any one of claims 1 to 3, characterized in that: and a water outlet (K3) is also arranged on the serpentine cooling channel (K).

5. The flameproof planetary speed reduction and frequency conversion permanent magnet synchronous all-in-one machine according to claim 1, characterized in that: and a reactor junction box (6) is further arranged on one side of the frequency converter junction box (4), a reactor is arranged in the reactor junction box (6), and a high-voltage cable connector (6-1) and a low-voltage cable connector (6-2) are arranged on the reactor junction box (6).

6. The flameproof planetary speed reduction and frequency conversion permanent magnet synchronous all-in-one machine according to claim 5, characterized in that: the reactor junction box (6) is located on the side of a shell (G) of the permanent magnet synchronous motor.

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