CN211351885U

CN211351885U - Novel power structure of electric shearing machine

Info

Publication number: CN211351885U
Application number: CN202020020708.4U
Authority: CN
Inventors: 不公告发明人
Original assignee: Changzhou Gushi Electromechanical Technology Co ltd
Current assignee: Changzhou Gushi Electromechanical Technology Co ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-08-25
Anticipated expiration: 2030-01-07

Abstract

The utility model discloses a power structure of a novel electric shearing machine, wherein a wire casing is reserved on a stator shell for aligning the electric wire of a stator, a cylinder at the center of the stator shell is embedded in a stator inner hole close fit mode, and then a spacer is inserted into spacer grooves reserved at two ends of the wire casing of the stator shell to separate the rotor shell from the electric wire; the tail part of the rotor shell is designed with fan blades integrated with the rotor shell, and when the rotor shell operates, the fan blades suck air from four air holes of the machine head body, the air flows into the internal cavity of the motor through the four air holes reserved by the connecting sleeve, and is discharged and radiated through the protecting cover and the air holes of the stator shell. The rotor shaft, the bearing and the bearing position in the center of the stator shell are matched and assembled to enable the rotor to be arranged inside the stator shell, and the power requirement for assembling and applying the electric shearing machine is met by the built-in outer rotor.

Description

Novel power structure of electric shearing machine

Technical Field

The utility model belongs to a novel electric shearing machine power structure's technological improvement.

Background

At present, the electric shearing machine in the market basically realizes shearing work by a shearing head (or a motor without a reducer and with larger volume) driven by a transmission gear speed change mechanism of a miniature small motor or a planetary speed reducer mechanism through a flexible shaft driving shearing head. Although the electric shearing machine driven by a miniature small motor through a gear speed change mechanism or a planetary reducer has the advantages of portability and dexterity compared with a flexible shaft shearing machine without a reducer, the electric shearing machine has a plurality of defects; the reason for this is mainly that (a general inner rotor type brush motor) or (a brushless inner rotor type motor) is applied. The defects are that the torsion of an inner rotor motor with the same volume is greatly smaller than that of an outer rotor type, the rotating speed of the inner rotor motor from 12000 to 15000 turns is changed into 2800 turns through a speed reducer mechanism to improve the torsion, the power of shearing work is met, the motor is short in service life and more in faults due to the fact that the rotating speed is too high, and the reducer at a hand-holding position is additionally provided with a heat insulation sleeve due to long-time work scalding, so that the work requirement of hand-holding use is met. However, the heat insulation sleeve additionally arranged at the speed reducer part causes that the speed reducer can not radiate heat well, the speed reducing mechanism is heated seriously, and can not work durably and has insufficient power; because the structural space is limited, the gear module of the speed reducer mechanism is small, the service life of parts of the speed reducer mechanism is short due to severe heating, the faults are more, and the maintenance cost is high; the shearing head is driven by the small inner rotor motor directly at low speed by subtracting the speed reducing mechanism, so that the power requirement of shearing work can not be completely met.

Disclosure of Invention

The utility model aims to provide a power structure of a novel electric shearing machine, invents an outer rotor built-in motor structure, and has the advantages that the structure of the utility model solves the application and assembly requirements of an outer rotor motor in manual electric tools by combining the power supply operation of a three-phase low-voltage DC power supply, and the 2800-rotation torsion value can reach 1.9N; the structure of the utility model realizes the quick disassembly, assembly, maintenance and repair of the shearing head part of the electric shearing machine; particularly, the advantages of the outer rotor motor that the rotating speed is 2800 revolutions and the torsion value is 1.9N meet the power requirement for the assembly and application of the electric shearing machine; a speed reducer mechanism is omitted, so that the torque force required by directly driving the shearing head is ensured; moreover, a reasonable air exhaust and heat dissipation structure is designed for the motor; the motor directly drives the shearing head part at a low rotating speed under the torque condition meeting the shearing work requirement, so that the practicability of no heating, sufficient power, light weight and easy disassembly and maintenance of long-time shearing work is realized practically by saving a speed reducer mechanism.

In order to achieve the above purpose, the technical scheme of the utility model is that: a novel power structure of an electric shearing machine comprises: the motor comprises a rotor shaft, a rotor shell, magnetic steel, a first bearing, a second bearing, a stator shell, a stator, an electric wire, a spacer, a protecting cover, a wire bending sheath, a connecting sleeve, a screw, a coupler, a machine head body, a set screw, a protecting cover positioning groove, a wire groove, a spacer groove, fan blades, a first internal thread and a second internal thread; a circle of the inner circle of the rotor shell is bonded with magnetic steel, and then a rotor shaft is embedded into a hole at one end of the rotor shell and locked with first internal threads at the roots of the fan blades by screws; the stator wire aligns the wire slot left on the stator shell, the stator inner hole is embedded into the cylinder at the center of the stator shell in a tight fit mode, and then the spacer is inserted into the spacer slots left on the two ends of the stator shell wire slot to separate the rotor shell from the wire; the rotor shaft, the first bearing, the second bearing and the bearing position at the center of the stator shell are matched and assembled to ensure that the rotor is arranged in the stator shell; after the protecting cover is aligned with the three protecting cover positioning grooves around the end step of the stator shell and is inserted, the protecting cover is locked to a second internal thread of the protecting cover through an assembly hole reserved in the stator shell by using a screw; four internal threads reserved at one end of the connecting sleeve, which is aligned with the ventilation hole of the stator shell, are locked by screws; after the connecting sleeve is aligned with the tail circular step of the machine head body and inserted, four internal threads reserved on the excircle of the connecting sleeve are locked and jacked into an annular groove of the excircle of the tail step of the machine head body by using set screws; when the motor rotates, the rotor shaft transmits the shearing head through the coupler to realize operation; the tail of the rotor shell is designed with fan blades integrated with the rotor shell, and when the rotor shell operates, the fan blades suck air from four air holes of the machine head body, the air flows into the internal cavity of the motor through the four air holes reserved by the connecting sleeve, and is discharged and radiated through the protecting cover and the air holes of the stator shell.

Drawings

FIG. 1 is a perspective view of the overall assembly of the present invention;

fig. 2 is a schematic front view of the motor of the present invention;

fig. 3 is a left side view schematic diagram of the motor of the present invention;

FIG. 4 is a schematic sectional view A-A of the motor of FIG. 2;

FIG. 5 is a schematic view of a stator case equal side shaft structure of the present invention;

fig. 6 is a schematic front view of the stator case of the present invention;

FIG. 7 is a schematic sectional view of the stator case of the present invention, shown in FIG. 6 from the front view B-B;

fig. 8 is a schematic cross-sectional structure view of fig. 7, which is a cross-sectional view of the stationary housing of the present invention;

fig. 9 is a partial enlarged structural schematic view of the stator casing of the present invention at the section a of fig. 8;

FIG. 10 is a partial enlarged structural view of the stator casing shown in FIG. 7, cut away B;

fig. 11 is a schematic side view of the rotor of the present invention;

fig. 12 is a schematic cross-sectional view of the rotor of the present invention, shown in side view D-D in fig. 11;

FIG. 13 is a front view of the protective cover of the present invention;

FIG. 14 is a side view of the protective cover of the present invention;

FIG. 15 is a front view F-F cross-sectional structural view of the protective cover of the present invention shown in FIG. 13;

FIG. 16 is a schematic cross-sectional side view G-G of the protective cover of the present invention;

fig. 17 is a schematic top view of the machine head body of the present invention;

fig. 18 is a schematic sectional view of the connection sleeve of the present invention;

fig. 19 is a side view schematic structure of the adapter of the present invention;

fig. 20 is a schematic front view of the stator of the present invention;

fig. 21 is a schematic side view of the stator of the present invention.

Detailed Description

A novel power structure of an electric shearing machine comprises: the motor comprises a rotor shaft 1, a rotor shell 2, magnetic steel 3, a first bearing 4, a second bearing 5, a stator shell 6, a stator 7, an electric wire 8, a spacer 9, a protective cover 10, a wire bending sheath 11, a connecting sleeve 12, a screw 13, a coupler 14, a machine head body 15, a set screw 16, a protective cover positioning groove 17, a wire groove 18, a spacer groove 19, a fan blade 20, a first internal thread 21 and a second internal thread 22; a circle of the inner circle of the rotor shell 2 is bonded with the magnetic steel 3, and then the rotor shaft 1 is embedded into a hole at one end of the rotor shell 2 and locked with a first internal thread 21 at the root of the fan blade 20 by a screw; the wire of the stator 7 aligns to the wire slot 18 reserved on the stator shell 6, the inner hole of the stator 7 is embedded into the cylinder at the center of the stator shell 6 in a tight fit mode, and then the spacer 9 is inserted into the spacer slots 19 reserved at two ends of the wire slot 18 of the stator shell 6 to separate the rotor shell 2 from the wire 8; the rotor shaft 1 is matched and assembled with the first bearing 4, the second bearing 5 and the bearing position at the center of the stator shell 6, so that the rotor is arranged in the stator shell 6, and an electric wire 8 output from a wire slot 18 of the stator shell 6 passes through a wire bent sheath 11 hole through a wire slot reserved on a protecting cover 10; after the protecting cover 10 is inserted into the three protecting cover positioning grooves 17 which are aligned to the periphery of the end step of the stator shell 6, the protecting cover 10 is locked to a second internal thread 22 of the protecting cover 10 through an assembly hole reserved in the stator shell 6 by using a screw; four internal threads reserved at one end of the four holes of the connecting sleeve 12, which are aligned with the ventilation holes of the stator shell 6, are locked by screws 13; the connecting sleeve 12 is aligned with the tail circular step of the machine head body 15 and inserted, and then is locked and jacked into an annular groove of the excircle of the tail step of the machine head body 15 through four internal threads reserved on the excircle of the connecting sleeve 12 by using a set screw 16; when the motor rotates, the rotor shaft 1 drives the shearing head through the coupler 14 to realize operation; the tail part of the rotor shell 2 is designed with fan blades 20 which are integrated with the rotor shell 2, when the rotor shell 2 operates, the fan blades 20 suck air from four ventilation holes of the machine head body 15, the air flows into the internal cavity of the motor through the four ventilation holes reserved by the connecting sleeve 12, and the air is discharged for heat dissipation through the protecting cover 10 and the ventilation holes of the stator shell 6.

Claims

1. The utility model provides a novel power structure of electronic shearing machine which characterized in that includes: the motor rotor comprises a rotor shaft (1), a rotor shell (2), magnetic steel (3), a first bearing (4), a second bearing (5), a stator shell (6), a stator (7), an electric wire (8), a spacer (9), a protective cover (10), a wire bending sheath (11), a connecting sleeve (12), a screw (13), a coupler (14), a machine head body (15), a set screw (16), a protective cover positioning groove (17), a wire groove (18), a spacer groove (19), a fan blade (20), a first internal thread (21) and a second internal thread (22); a circle of the inner circle of the rotor shell (2) is bonded with the magnetic steel (3), and then the rotor shaft (1) is embedded into a hole at one end of the rotor shell (2) and locked with a first internal thread (21) at the root of the fan blade (20) by a screw; the stator (7) is aligned with the wire slot (18) reserved on the stator shell (6), the inner hole of the stator (7) is embedded into the cylinder at the center of the stator shell (6) in a tight fit mode, and then the spacer (9) is inserted into the spacer slots (19) reserved at the two ends of the wire slot (18) of the stator shell (6) to separate the rotor shell (2) from the wire (8); the rotor shaft (1) is matched and assembled with the first bearing (4), the second bearing (5) and the bearing position at the center of the stator shell (6) to ensure that the rotor is arranged in the stator shell (6), and an electric wire (8) output from a wire slot (18) of the stator shell (6) penetrates out of a hole of a wire bent sheath (11) through a wire slot opening reserved on a protective cover (10); after the protecting cover (10) is inserted into the three protecting cover positioning grooves (17) around the end step of the aligned stator shell (6), the protecting cover is locked to a second internal thread (22) of the protecting cover (10) through an assembly hole reserved in the stator shell (6) by a screw; four internal threads reserved at one end of the vent hole of the stator shell (6) and aligned with the four holes of the connecting sleeve (12) are locked by screws (13); after the connecting sleeve (12) is aligned with the tail circular step of the machine head body (15) and inserted, four internal threads reserved on the excircle of the connecting sleeve (12) are locked and jacked into an annular groove of the excircle of the tail step of the machine head body (15) by using set screws (16); when the motor rotates, the rotor shaft (1) drives the shearing head through the coupler (14) to realize operation; the tail of the rotor shell (2) is provided with fan blades (20) integrated with the rotor shell (2), when the rotor shell (2) operates, the fan blades (20) suck air from four air holes of the machine head body (15), the air flows into the air through the four air holes reserved in the connecting sleeve (12), penetrates through an internal cavity of the motor and is discharged and dissipated through the protecting cover (10) and the air holes of the stator shell (6).