CN201651190U - Planetary shift reducer of main shaft - Google Patents

Abstract

The utility model relates to a planetary shift reducer for a main shaft, which is designed to solve the technical problem of a reducer with low torque and high rotational speed which is required for power drive of the main shaft of a large size machine tool, in particular a reducer with high precision and reliability required by military-grade and used in occasions with larger output torque, extra-low return gap, ultra-low back lash and ultra-low noise. The shift reducer mainly comprises an input end, a transmission part, an output end, an electromagnet and a shifting fork gearshift and the like. The sun wheel bearing is directly mounted in the planet bracket to improve the operation accuracy of the gear. Gear mesh is a design of involute helical tooth spiral tooth and the tooth profile meshing ratio is two fold greater than the tooth profile meshing ratio of the spur gear. The planetary shift reducer for a main shaft has the advantages of stable operation, lower noise, higher input rotary speed, larger output speed range, higher output torque and ultra-low back lash. The utility model is the reducer with high precision and reliability of military-grade and suitable for occasions with larger output torque, extra-low return gap, ultra-low back lash and ultra-low noise due to unique characteristics and applied widely in fields of military, aviation, machine tool, elevator, robot, printing and the like.

Description

Main shaft planet variable block speed reducer

Technical field:

The utility model relates to a kind of planet-gear speed reducer, relate in particular to a kind of high rotating speed, the main shaft planet variable block speed reducer of big output torque, be that army's grade is high-accuracy, the high reliability speed reducer, be applicable to the occasion of big output torque, extremely low backhaul gap, ultralow back clearance and super low noise, can be widely used in fields such as military affairs, Aero-Space, lathe, elevator, robot, printing.

Background technique:

The kind of present planet-gear speed reducer is a lot, and application is also very extensive, but can be applicable to the high-revolving power input of the required low moment of torsion of the motivational drive of main shaft of large machine tools also seldom.Especially do not satisfy high-accuracy, the high reliability request of army's grade, and be applicable to the speed reducer of the occasion use of big output torque, extremely low backhaul gap, ultralow back clearance and super low noise.

Summary of the invention:

The utility model is for solving the required high-revolving speed reducer of low moment of torsion of motivational drive that satisfies main shaft of large machine tools, especially to satisfy army's grade required high-accuracy, high reliability, and the technical problem of the speed reducer that the occasion that is applicable to big output torque, extremely low backhaul gap, ultralow back clearance and super low noise is used, a kind of main shaft planet variable block speed reducer with higher input speed, big output torque, extremely low backhaul gap and super low noise is provided, and it mainly comprises input end, drive part, output terminal and electromagnet, shift fork gearshift; The motor flange of described input end through O type circle sealing and fixing on motor case body; Described drive part mainly comprises sun gear, ring wheel, planet wheel, planet wheel shaft, planet carrier, bearing support, speed pulley, brake disc, blanking cover, bearing, dish spring group composition; Adopt the design of involute helical teeth spiral gear between inside and outside engaging gear; Output terminal mainly is made up of output hub, output shaft, bonnet, interior supporting sleeve, outer supporting sleeve, bearing and seal ring, and input wheel hub one end of described input end cooperates with bearing inner ring, and the other end floats; Sun gear one end of drive part and input wheel hub spline engagement, the other end is deep into bearing inner ring and floats, speed pulley is by alternately engagement between shift fork and input wheel hub and ring wheel, planet wheel shaft is embedded in the planet wheel in the hole, and whole with it trisection evenly is installed on the planet carrier, and the sun gear bearing directly is installed in the planet carrier; Be connected with the axis of guide by the blind hole on the output hub large end face, shift fork places in the allocating slot of the axis of guide; Oil sealing is installed in the bonnet, and inside and outside supporting sleeve cooperates with the innner and outer loop mapping of bearing respectively; The output shaft end face by bolt with linked to each other by transmission shaft;

Electromagnet, shift fork gearshift mainly are made up of motor case body, breather plug, electromagnet, shift fork, electromagnet connecting plate, driving lever, bearing pin, pin, the axis of guide, shift fork contiguous block and shift fork catch; Electromagnet and electromagnet connecting plate as a whole sealing and fixing on motor case body, driving lever is rotatably connected with bearing pin by the magnetic force of electromagnet, the shift fork end is provided with stirs pin, and be in transmission connection with the shift fork that is positioned at axis of guide allocating slot, at axis of guide upper edge axially reciprocating, by the shift fork contiguous block that speed pulley is fastening, speed pulley is back and forth shifted gears with shift fork vertically and is located by connecting.

Characteristics of the present utility model are: compact structure, sun gear bearing directly are installed in the planet carrier, improve the running accuracy of train of gearings; Adopt the design of involute helical teeth spiral gear between gear engagement, its profile of tooth contact-ratio is more than the twice of general spur wheel, have running steadily, than low noise, higher input speed, big output torque, its input speed is up to 5000-10000r/min, output torque is that army's grade is high-accuracy, the high reliability speed reducer up to 2000Nm, because its original characteristics, be applicable to the occasion of big output torque, extremely low backhaul gap, ultralow back clearance and super low noise, ultralow back clearance≤1arcmin; Super low noise≤67dB can be widely used in fields such as military affairs, Aero-Space, lathe, elevator, robot, printing.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is an overall structure generalized section of the present utility model.

Fig. 3 is a K-K section enlarged diagram among Fig. 2.

Embodiment:

Referring to Fig. 1-Fig. 3, main shaft planet variable block speed reducer, it mainly comprises input end, drive part, output terminal and electromagnet, shift fork gearshift.Wherein:

Input end mainly is made up of input wheel hub 24, bearing, motor flange 25, seal ring, motor flange 25 sealing and fixing are on motor case body 1, and matching surface prevents that with the sealing of O type circle lubricant oil from leaking, input wheel hub 24 1 ends cooperate with bearing inner ring, and the other end floats.

The transmission unit mainly comprises sun gear 22, ring wheel 10, planet wheel 11, planet wheel shaft 12, planet carrier 13, bearing support 14, speed pulley 21, brake disc 20, blanking cover 23, bearing, dish spring group.Sun gear 22, ring wheel 10, in the planet wheel 11, adopt the design of involute helical teeth spiral gear between external gear pump, blanking cover 23 is used to prevent that lubricant oil from leaking, sun gear 22 1 ends and input wheel hub 24 spline engagement, the other end is deep into bearing inner ring and floats, speed pulley 21 can be realized and import wheel hub 24 and encircle alternately meshing of 10 on wheel by shift fork 4, planet wheel shaft 12 is embedded in 11 li holes of planet wheel, and whole with it trisection evenly is installed on the planet carrier 13, can make drive part be subjected to uniform load in a circumferential direction like this, make the deceleration function sustain higher input load and bigger output torque, the sun gear bearing directly is installed in the planet carrier 13, improves the running accuracy of train of gearings greatly.

Output terminal mainly is made up of output hub 19, output shaft 15, bonnet 16, interior supporting sleeve 18, outer supporting sleeve 17, bearing, seal ring, output hub 19 big end end faces have a blind hole, for the axis of guide 9 usefulness are installed, shift fork slides on the axis of guide 9, realizes its gearshift work.In the bonnet 16 oil sealing is installed, is used to prevent that lubricant oil from leaking.Inside and outside supporting sleeve is respectively to the innner and outer loop mapping of bearing.Output shaft 15 big ends lean on bolt and are linked to each other by transmission shaft.

Electromagnet, shift fork gearshift mainly are made up of motor case body 1, breather plug 2, electromagnet 3, shift fork 4, electromagnet connecting plate 5, driving lever 6, bearing pin 7, pin 8, the axis of guide 9, shift fork contiguous block 26, shift fork catch 27.Electromagnet 3 and electromagnet connecting plate 5 as a whole sealing and fixing on motor case body 1, during electromagnet 3 energisings, utilize magnetic force that driving lever 6 is rotated around bearing pin 7 centers, pin 8 is stirred in shift fork 4 ends, make shift fork 4 at the axis of guide 9 upper edge axially reciprocatings, because shift fork contiguous block 5 is fastening with speed pulley 21,, realize the gearshift work of shift fork 4 simultaneously so also can make speed pulley 21 to-and-fro motion vertically simultaneously.

Referring to Fig. 2, brake disc 20 is connected on the motor case body 1, speed pulley 21 is connected with brake disc (20) spline, brake disc is connected with ring wheel 10 splines again simultaneously, 10 the motions of ring wheel have so just been limited at circumferencial direction, input wheel hub 24 is by being connected with sun gear 22 splines, driving belt is given three planet wheels 11 of circumferencial direction, planet wheel is in a circumferential direction around ring wheel 10 ring gear high speed rotating, drive planet carrier 13 circular movement, 15 splines of planet carrier and output shaft are connected, thereby make the output shaft high speed rotating.Electromagnet 3 is under the effect of energising, with magnetic force driving lever 6 is rotated around bearing pin 7 centers, pin 8 is stirred in shift fork 4 ends, make shift fork motion left vertically on the axis of guide 9, simultaneously because shift fork contiguous block 26 is fastening with speed pulley 21, so also can make speed pulley 21 vertically to left movement simultaneously, realize the gearshift work of shift fork 4, sun gear 22 1 ends and input wheel hub 24 spline engagement, the other end is deep into bearing inner ring and floats, speed pulley 21 is thrown off with brake disc 20, the input wheel hub 24 with the circumference power transmission to planet wheel 11 and speed pulley 21, speed pulley 21 is connected with ring wheel 10 splines, drives ring wheel 10 high speed rotating in a circumferential direction, and sun gear 22 is given equally distributed three planet wheels 11 of circumferencial direction with the circumference transmission of power again simultaneously, planet wheel 11 like this, planet carrier 13, constituted the transmission of typical NGW type between the ring wheel 10, planet carrier 13 is connected with output shaft 15 splines, gives output shaft 15 with the circumference transmission of power.

Claims (1)

1. main shaft planet variable block speed reducer, it mainly comprises input end, drive part, output terminal and electromagnet, shift fork gearshift; Described input end mainly is made up of input wheel hub, bearing, motor flange, seal ring, motor flange (25) through O type circle sealing and fixing on motor case body (1); Described drive part mainly comprises sun gear (22), ring wheel (10), planet wheel (11), planet wheel shaft (12), planet carrier (13), bearing support (14), speed pulley (21), brake disc (20), blanking cover (23), bearing, dish spring group composition; Output terminal mainly is made up of output hub (19), output shaft (15), bonnet (16), interior supporting sleeve (18), outer supporting sleeve (17), bearing and seal ring, it is characterized in that: input wheel hub (24) one ends of input end cooperate with bearing inner ring, and the other end floats; Sun gear (22) one ends of drive part and input wheel hub (24) spline engagement, the other end is deep into bearing inner ring and floats, speed pulley (21) is by alternately engagement between shift fork (4) and input wheel hub (24) and ring wheel (10), planet wheel shaft (12) is embedded in planet wheel (11) hole, lining, and whole with it trisection evenly is installed on the planet carrier (13), and the sun gear bearing directly is installed in the planet carrier; One end of the axis of guide (9) is installed in the blind hole on output hub (19) large end face, and shift fork places in the allocating slot of the axis of guide (9); Bonnet is equipped with oil sealing in (16), and inside and outside supporting sleeve (18) (17) cooperates with the innner and outer loop mapping of bearing respectively; Output shaft (15) end face by bolt with linked to each other by transmission shaft; Involute helical teeth spiral gear project organization is adopted in engagement between described sun gear (22), ring wheel (10) and planet wheel (11);

Electromagnet, shift fork gearshift mainly are made up of motor case body (1), breather plug (2), electromagnet (3), shift fork (4), electromagnet connecting plate (5), driving lever (6), bearing pin (7), pin (8), the axis of guide (9), shift fork contiguous block (26) and shift fork catch (27); Electromagnet (3) and electromagnet connecting plate (5) as a whole sealing and fixing on motor case body (1), driving lever (6) is rotatably connected with bearing pin (7) by the magnetic force of electromagnet (3), shift fork (7) end is provided with stirs pin (8), and be in transmission connection with the shift fork (4) that is positioned at the axis of guide (9) allocating slot, by shift fork contiguous block (26) that speed pulley (21) is fastening, speed pulley is back and forth shifted gears with shift fork (4) vertically and is located by connecting.

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