CN103615504B - The positive and negative change gear axis mechanism of circulating positive and negative break-in speed change vacuum compressor - Google Patents

The positive and negative change gear axis mechanism of circulating positive and negative break-in speed change vacuum compressor Download PDF

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Publication number
CN103615504B
CN103615504B CN201310704997.4A CN201310704997A CN103615504B CN 103615504 B CN103615504 B CN 103615504B CN 201310704997 A CN201310704997 A CN 201310704997A CN 103615504 B CN103615504 B CN 103615504B
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CN
China
Prior art keywords
change gear
break
positive
duckbilled
key
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Expired - Fee Related
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CN201310704997.4A
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Chinese (zh)
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CN103615504A (en
Inventor
王久祥
张庆鹏
王海涛
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Locating in Dalian Heng Machinery Manufacturing Co. Ltd.
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Locating In Dalian Heng Machinery Manufacturing Co Ltd
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/093Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00Freewheels or freewheel clutches
    • F16D41/02Freewheels or freewheel clutches disengaged by contact of a part of or on the freewheel or freewheel clutch with a stationarily-mounted member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/14Gearings for reversal only
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • F16H57/029Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • F16H57/031Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes

Abstract

The invention belongs to vacuum compression is mechanical, more particularly to a kind of positive and negative change gear axis mechanism of circulating positive and negative break-in speed change vacuum compressor;Gear assembly and break-in spindle assemblies including synchronous positive and negative rotation, it is characterised in that:Forward and reverse change gear mechanism is driven by synchronous positive and negative rotation gear assembly, each described change gear mechanism is made up of change gear axle, reduction box, a change gear, upper and lower end cap, break-in scroll key, duckbilled key asembly, b change gear, upper and lower axle sleeve, freewheel clutch and freewheel clutch set;The present invention is not only reasonable in design, compact conformation, both it had been easy to the positive and negative break-in of two change gear axles, two change gear axles exchange from working condition and idling conditions is facilitated implementation again, and with transmission performance reliability, stable and the features such as improve efficiency that vacuum compressor is vacuumized with compression.

Description

The positive and negative change gear axis mechanism of circulating positive and negative break-in speed change vacuum compressor
Technical field
The invention belongs to vacuum compression is mechanical, more particularly to a kind of circulating positive and negative break-in speed change vacuum compressor Positive and negative change gear axis mechanism.
Background technology
At present, in engineering goods such as reciprocating vacuum pump and reciprocating compressor mechanical driving device, Its structure mostly drives the transmission mechanism of bent axle and eccentric wheel type using motor, V belt translation.Slided by employing Block and connecting rod coordinate promotion piston to realize moving back and forth, and due to being restricted by the above-mentioned kind of drive, its cylinder body divides Cloth form can only be V-type, fan or twin-tub type in parallel.Periodically turn as bent axle is present with eccentric wheel transmission Point or dead point are dead point of the output torque for " 0 ";Vibrations and noise will necessarily be caused during transmission, and Bent axle and eccentric gearing do not have reinforcement coefficient;So power consumption is just big, especially when compression ratio is discharged When pressure/input pressure is larger, power consumption is very uneconomic.Why this is also current toward trans vavuum pump The reason for being autonomous device toward trans compressor;And these independent past trans vavuum pumps and independent toward anti- Both part is many for formula compressor, and not only weight was again but also structure is not compact.In recent years, above-mentioned reciprocating true in order to solve The problem that the mechanical driving device of empty pump and reciprocating compressor is present, people found figure from using worm drive tool There is reinforcement coefficient big, the accurate characteristic that operates steadily is set out, in conjunction with the round commutation using elastic force control leading screw Device, and researched and developed a kind of reciprocating screw vacuum compressor of Patent No. ZL201110158356.4; Its structure is included by support, motor, V belt translation, driven pulley, support shaft, gear drive exchange system, sky Heart axle, bearing block, hollow leading screw, screw, screw sleeve pipe, adapter sleeve, reversing bar, spring mechanism and tooth The electric transmission of the spiral reciprocating type of embedded-type clutch composition, in the electric transmission of its spiral reciprocating type The commutation of reversing bar is rotated, and is driven by cylinder body, piston, sealed joint pipe, seal first, middle separate space, close Sealing second, front separate space, rear separate space, triplet type intake valve, triplet type air bleeding valve, middle triplet type air bleeding valve, The vacuum compression device of middle triplet type intake valve, total air escape pipe and total inlet pipe composition, in vacuum compression dress Piston series connection group, constantly in the cylinder body past, return motion, realize the vacuum compressor collection and vacuumize and press Contracting function is in one.Although the more above-mentioned reciprocating vacuum pump of the reciprocating screw vacuum compressor and reciprocating pressure The structure of contracting machine, has progress, but its transmission device there are still some drawbacks and not enough, topmost scarce Point is that its jaw clutch is easy to de- knot in normal work and its transmission device can not enter under high-speed condition Row normal work, constrains the efficiency raising vacuumized with compression function of vacuum compressor;Therefore, for The shortcoming and defect that above-mentioned technology is present, the applicant contemplate a kind of circulating positive and negative break-in speed change vacuum pressure Contracting machine, the motor that the circulating positive and negative break-in speed change vacuum compressor is made up of support, motor and V belt translation Drive component drives positive and negative break-in speed changing type transmission device, and the positive and negative break-in speed changing type transmission device includes to slow down Device, the gear assembly of positive and negative rotation, positive and negative deviator and speeder, wherein positive and negative deviator bag Include gear assembly, break-in spindle assemblies and forward and reverse change gear mechanism of positive and negative rotation, the positive and negative break-in The transmission scheme of collection high speed → deceleration → break-in → speedup grasped by speed changing type transmission device, through deceleration device and just Contravariant is to component;The high rotating speed of input is down to the slow-speed of revolution and is become backward, and the slow-speed of revolution is increased through speeder Speed is driven with high rotating speed to the high rotating speed of output shaft by the output shaft in positive and negative break-in speed changing type transmission device Piston series connection group in vacuum compression device constantly vacuum compression cylinder body past, return motion, realize the vacuum The efficient function of vacuumizing with compression of compressor;For this purpose, requiring circulating positive and negative break-in speed change vacuum compression The positive and negative change gear axis mechanism of machine, it is necessary to have rational in infrastructure and transmission performance is reliable and stable.Therefore, create A kind of positive and negative change gear axis mechanism suitable for circulating positive and negative break-in speed change vacuum compressor newly developed, be Very necessary.
Content of the invention
It is contemplated that in place of in order to avoid shortcoming and defect present in above-mentioned technology, grasping fills transmission The output shaft that puts drives vacuum compression device to set out with high rotating speed, using high speed → deceleration → break-in → speedup Technical scheme transmission device, and provide a kind of the positive and negative of circulating positive and negative break-in speed change vacuum compressor Change gear axis mechanism;The positive and negative change gear axis mechanism is not only reasonable in design, and compact conformation was both easy to The positive and negative break-in of two change gear axles, facilitates implementation two change gear axles again from working condition and idle running The exchange of state, and with transmission performance reliability, stable and improve vacuum compressor vacuumize with The features such as efficiency of compression.
The purpose of the present invention adopts the following technical scheme that realization:Described circulating positive and negative break-in becomes The positive and negative change gear axis mechanism of fast vacuum compressor, including synchronous forward and reverse gear synchronous drive mechanism With break-in mainshaft mechanism, it is characterised in that:Forward and reverse break-in is driven by forward and reverse gear synchronous drive mechanism Gear mechanism, each described change gear mechanism by change gear axle, reduction box, a change gear, on Bottom end cover, break-in scroll key, duckbilled key asembly, b change gear, upper and lower axle sleeve, freewheel clutch and super More clutch sleeve constitutes, and the top of described change gear axle is being slowed down through reduction box by bearings In case lid, reduction box in bottom surface, is close to by bearings in break-in case in the bottom of change gear axle A change gear, described a change gear axis hole and change gear is inserted on the change gear axle in base face Spacing δ is left between axle, and a change gear axis hole medial surface is provided with unidirectional ratchet;Described a break-in tooth Upper end cover and freewheel clutch set are sequentially installed on change gear axle in wheel top end face, surmount in described Load freewheel clutch in clutch sleeve, freewheel clutch set is bolted on gear box cover, institute Put several balls between the Upper shaft sleeve bottom surface that states and the contact surface of a change gear, described a break-in tooth Upper shaft sleeve is fixed by jackscrew on change gear axle in the bottom of wheel, described Upper shaft sleeve top surface is become with a To gear contact surface between put several balls;Change gear axle more than break-in case inner bottom surface bearing Upper installing freewheel clutch set, the freewheel clutch set is bolted in break-in case on bottom, described Freewheel clutch load in freewheel clutch set, put on the freewheel clutch above change gear axle of set Enter b change gear, between described b change gear and change gear axle, leave spacing δ, b change gear Axis hole medial surface is provided with unidirectional ratchet;Lower end is fixed by screw in the lower end of described b change gear Lid, puts several balls between the contact surface of described lower end hd top face and b change gear, described b Lower shaft sleeve, described Lower shaft sleeve bottom surface contact with b change gear are fixed by jackscrew in change gear end Put several balls between face, hinged spring duckbilled key asembly in the medial surface of described b change gear; When described spring duckbilled key asembly is stretched outside b change gear axle by elastic force effect, the b becomes In running order to gear shaft, when the spring duckbilled key asembly is huddled up in b break-in by elastic force effect When in gear shaft, the b change gear axle is in idling conditions;Relative per end position with the commutation body Break-in scroll key is installed on the change gear axle that answers;Described break-in scroll key and a, b change gear axis hole height The upper and lower key section of identical radiused cross-section is respectively equipped with the consistent cylindrical keys body of size, described Radiused cross-section camber more than break-in scroll key radius, the top of the upper key section passes through Upper shaft sleeve It is fixed on upper end cover with the break-in roll keyway in change gear axle;The bottom of the lower key section passes through lower axle Break-in roll keyway in set and change gear axle is fixed on bottom end cover;The stage casing of the break-in scroll key is provided with spine Pawl head and scroll key spring, one end of described ratchet head connection scroll key spring, described break-in scroll key another One end is connected on change gear axle;The ratchet head of described break-in scroll key and the external arc of its body that commutates Ear one end mutually touches;When the ratchet head of the break-in scroll key in positive change gear mechanism apply pressure to corresponding The external circular arc ear one end of commutator, and the upper and lower key section of the forward direction is by a, b change gear axis hole The stop of unidirectional ratchet, now a change gear idle running of the positive change gear mechanism, makes break-in tooth Wheel shaft can not be rotated, and the change gear mechanism for causing forward direction does not work;And the reverse break-in tooth of another side Normal work in wheel mechanism;Conversely, when the ratchet head of the break-in scroll key in reverse change gear mechanism is applied Be pressed on the other end of the external circular arc ear of corresponding commutator, at the same time, this reverse upper, Lower key section do not stopped by unidirectional ratchet in a, b change gear axis hole, now the reverse change gear machine The a change gear idle running of structure, makes change gear axle rotate, causes reverse change gear mechanism not Work;And normal work in the change gear mechanism of the forward direction of another side;By on positive and negative two break-in axles Two spring duckbilled key asemblies, the cooperating of two break-in scroll keys and the left and right swing of commutator, Realize the positive and negative break-in function of forward and reverse change gear mechanism.
The principle and feature of the present invention is described below:
The output shaft of transmission device of the present invention is intended to drive the purpose of vacuum compression device with high rotating speed, adopts The transmission device of the technical scheme of at a high speed → deceleration → break-in → speedup, i.e., the motor on support is by band Transmission drives or directly by the positive and negative break-in speed changing type transmission device of Motor drive, and the positive and negative break-in speed changing type is passed Dynamic device is made up of deceleration device, the gear assembly of positive and negative rotation, positive and negative deviator and speeder; Wherein forward and reverse change gear mechanism, each change gear are driven by synchronous positive and negative rotation gear assembly Mechanism is by change gear axle, a change gear, upper and lower axle sleeve, break-in scroll key, duckbilled key asembly, b break-in Gear, upper and lower end cap, freewheel clutch and freewheel clutch set composition;By the gear train of positive and negative rotation Part driving, the effect of time difference produced through commutator and cooperating for spring duckbilled key asembly, make Change gear axle in its forward and reverse change gear mechanism realizes the break-in function of positive and negative direction.
The comprehensive above technical scheme that is taken, realizes the purpose of the present invention.
Compared with prior art, the present invention is not only reasonable in design, compact conformation, has both been easy to two break-in teeth The positive and negative break-in of wheel shaft, facilitates implementation friendship of two change gear axles from working condition and idling conditions again Change, and with transmission performance reliability, the effect that stable and raising vacuum compressor is vacuumized and compressed The features such as rate.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
The present invention has five width accompanying drawings.Wherein:
Accompanying drawing 1 is the main structure diagram of the specific embodiment of the invention;
Accompanying drawing 2 is the enlarged diagram at the H in Fig. 1;
Accompanying drawing 3 is the section view enlarged diagram in Fig. 2 along D D line;
Accompanying drawing 4 is the section view enlarged diagram in Fig. 2 along E E line;
Accompanying drawing 5 is the enlarged diagram of the break-in scroll key 10 in the present embodiment.
In figure:1st, freewheel clutch set, 2, ball, 3, freewheel clutch, 4, change gear axle, 5th, upper and lower end cap, 6, a change gear, 7, gear box cover, 8, deceleration box, 9th, upper and lower axle sleeve, 10, break-in scroll key, 11, b change gear, 12, scroll key spring, 13rd, ratchet head, 14, commutation body, 15, break-in case, 16, break-in spindle assemblies, 17th, spring duckbilled key asembly, 18, hinge, 19, unidirectional ratchet, 20, O-ring, 21st, duckbilled spring, 22, upper lower key section, 23, break-in main shaft, 24, transition wheel support, 25th, A excessive gear, 26, A excessive gear axle, 27, B transition gear axle, 28, B transition gear.
Specific embodiment
It is the specific embodiment of the present invention shown in Fig. 1,2,3,4,5, it is that circulating positive and negative break-in becomes The positive and negative change gear mechanism of fast vacuum compressor, including forward and reverse gear synchronous drive mechanism and break-in master Axis mechanism, it is characterised in that:Positive and negative change gear axis mechanism is driven by synchronous positive and negative rotation gear assembly, Each described change gear axis mechanism by change gear axle 4, deceleration box 8, a change gear 6, on Bottom end cover 5, break-in scroll key 10, spring duckbilled key asembly 17, b change gear 11, upper and lower axle sleeve 9, Freewheel clutch 3 and freewheel clutch set 1 constitute, and the top of described change gear axle 4 passes through slows down By bearings in gear box cover 7, the bottom of change gear axle 4 is being become case 8 by bearings Into 15 inner bottom surface of case, on the change gear axle 4 of being close to 7 bottom surface of gear box cover, a change gear 6 is inserted, Spacing δ, 6 axis hole of a change gear is left between described 6 axis hole of a change gear and change gear axle 4 Medial surface is provided with unidirectional ratchet 19;On change gear axle 4 in described 6 top end face of a change gear Sequentially installing upper end cover 5 and freewheel clutch set 1, load in described freewheel clutch set 1 surmount from Clutch 3, freewheel clutch set 1 are bolted on gear box cover 7, described 5 bottom surface of Upper shaft sleeve Put several balls 2 between the contact surface of a change gear 6, in the bottom of described a change gear 6 Change gear axle 11 on Upper shaft sleeve 9, described 9 top surface of Upper shaft sleeve and a break-in tooth are fixed by jackscrew Several balls 2 are put between the contact surface of wheel 12;Change gear more than 15 inner bottom surface bearing of break-in case Installing freewheel clutch set 1 on axle 4, the freewheel clutch set 1 are bolted in break-in case 15 On bottom, described freewheel clutch 3 loads in freewheel clutch set 1, covers more than 1 in freewheel clutch Change gear axle 4 on insert b change gear 11, described b change gear 11 and change gear axle 4 Between leave spacing δ, 11 axis hole medial surface of b change gear is provided with unidirectional ratchet 19;Described b becomes Bottom end cover 5, described 5 top surface of bottom end cover and b break-in tooth are fixed by screw into the lower end of gear 11 Several balls 2 are put between the contact surface of wheel 11, by jackscrew in the top of described b change gear 11 Fixing Lower shaft sleeve 9, puts several between the contact surface of described 9 bottom surface of Lower shaft sleeve and b change gear 11 Ball 2, hinged spring duckbilled key asembly 17 in the medial surface of described b change gear 11);Work as institute The spring duckbilled key asembly 17 that states is stretched when b change gear axle 4 is outer by elastic force effect, and the b becomes In running order to gear shaft, huddled up by elastic force effect when the spring duckbilled key asembly 17 and become in b During into gear shaft 4, the b change gear axle 4 is in idling conditions;Every with the commutation body 14 Installing break-in scroll key 10 on the corresponding change gear axle 4 of end position;Described break-in scroll key 10 and a, Identical radiused cross-section is respectively equipped with the consistent cylindrical keys body of b change gear axis hole height dimension Upper and lower key section 22, the camber of described radiused cross-section is more than the radius of break-in scroll key 10, described The top of upper key section 22 is fixed in upper end cover through the break-in roll keyway in Upper shaft sleeve 9 and change gear axle 4 On 5;The bottom of the lower key section 22 is solid through the break-in roll keyway in Lower shaft sleeve 9 and change gear axle 4 It is connected on bottom end cover 5;The stage casing of the break-in scroll key 10 is provided with ratchet head 13 and scroll key spring 12, described Ratchet head 13 connect one end of scroll key spring 12, one end of described break-in scroll key 10 is connected to break-in On gear shaft 4;The external arc ear 31 of the ratchet head 13 of described break-in scroll key 10 and its body 14 that commutates One end mutually touches;When the ratchet head of the break-in scroll key 10 in positive change gear mechanism apply pressure to corresponding The external circular arc ear one end of commutator, and the upper and lower key section of the forward direction is by a, b change gear axis hole The stop of unidirectional ratchet 19, now a change gear 6 of the positive change gear mechanism dally, make change Can not rotate to gear shaft 4, the change gear mechanism for causing forward direction does not work;And another side is reverse Normal work in change gear mechanism;Conversely, the spine when the break-in scroll key in reverse change gear mechanism Pawl head applies pressure to the other end of the external circular arc ear of corresponding commutator, at the same time, this reverse upper, Lower key section by the stopping of unidirectional ratchet 19 in a, b change gear axis hole, the now reverse break-in tooth The a change gear idle running of wheel mechanism, makes change gear axle 4 rotate, causes reverse change gear Mechanism does not work;And normal work in the change gear mechanism of the forward direction of another side;By positive and negative two Two spring duckbilled key asemblies, 17, two break-in scroll keys 10 and the left and right pendulum of commutator on individual break-in axle Dynamic cooperates, and realizes the positive and negative break-in function of forward and reverse change gear mechanism.
The profile of described gear box cover 7, deceleration box 8 and break-in case 15 is diameter identical cylinder Shape.
Being tightly connected respectively using O between described gear box cover 7, deceleration box 8, break-in case 15 Type circle 20.
Described spring duckbilled key asembly 17 is made up of duckbilled body, hinge 18 and duckbilled spring 21, institute The groove for accommodating duckbilled body is had in the medial surface of the change gear axle 4 that states, and described duckbilled body passes through hinge 18 are hinged in groove, and the top of described hinge 18 is hinged in Lower shaft sleeve 9, the bottom hinge of hinge 18 Connect in duckbilled body, the mouth end of duckbilled body is mutually touched with 10 lower key section of break-in scroll key, duckbilled body is realized by hinge Axle 18 is moved in groove, installs the duckbilled spring 21 of 2~4 between duckbilled body tail end and the groove inwall, This specific embodiment is 2 duckbilled springs 21, and duckbilled body is inserted in one end of each described duckbilled spring 21 Spring in the hole, in the other end insertion groove inwall of duckbilled spring 21.
The gear assembly of the positive and negative rotation in this specific embodiment is by A excessive gear axle 26, A excessive gear 25th, B transition gear axle 27, B transition gear 28 and transition wheel support 24 constitute.
Spindle assemblies (16) in this specific embodiment are by break-in main shaft 23, first change gear, the third break-in tooth Wheel, fourth change gear, second change gear, Buffer Unit and commutation body 14 constitute.,
The above, the only preferably specific embodiment of the present invention, but protection scope of the present invention is simultaneously Be not limited to this, all those familiar with the art in technical scope disclosed by the invention, In addition equivalent or change all should cover at this for the design of technology according to the present invention scheme and its present invention Within the protection domain of invention.

Claims (1)

1. a kind of positive and negative change gear axis mechanism of circulating positive and negative break-in speed change vacuum compressor, including with The gear assembly of the positive and negative rotation of step and break-in spindle assemblies, it is characterised in that:By synchronous positive and negative rotation Gear assembly drives forward and reverse change gear mechanism, each change gear mechanism by change gear axle, Deceleration box, a change gear, upper and lower end cap, break-in scroll key, spring duckbilled key asembly, b break-in tooth Wheel, upper and lower axle sleeve, freewheel clutch and freewheel clutch set composition, the top of described change gear axle Through reduction box by bearings in gear box cover, the bottom of change gear axle is existed by bearings In break-in case inner bottom surface, it is close on the change gear axle of gear box cover bottom surface, insert a change gear, described A change gear axis hole and change gear axle between leave spacing δ, set on a change gear axis hole medial surface There is unidirectional ratchet;Sequentially install on change gear axle in described a change gear top end face upper end cover and Freewheel clutch set, loads freewheel clutch in described freewheel clutch set, and freewheel clutch set is logical Cross and be bolted on gear box cover, between the contact surface of Upper shaft sleeve bottom surface and a change gear, put several Ball, fixes Upper shaft sleeve, institute by jackscrew on the change gear axle in the bottom of described a change gear Several balls are put between the Upper shaft sleeve top surface that states and the contact surface of a change gear;In break-in case inner bottom surface Freewheel clutch set is installed on change gear axle more than bearing, and the freewheel clutch set is bolted On bottom in break-in case, described freewheel clutch loads in freewheel clutch set, in freewheel clutch set B change gear is inserted on above change gear axle, between described b change gear and change gear axle Spacing δ is left, b change gear axis hole medial surface is provided with unidirectional ratchet;Under described b change gear Bottom end cover is fixed by screw in end, between the contact surface of lower end hd top face and b change gear, put several Ball, fixes Lower shaft sleeve by jackscrew in the top of described b change gear, described Lower shaft sleeve bottom surface Put several balls between the contact surface of b change gear, hinge in the medial surface of described b change gear Connect spring duckbilled key asembly;Become in b when described spring duckbilled key asembly is stretched by elastic force effect During to outside gear shaft, the b change gear axle is in running order, when the spring duckbilled key asembly passes through When elastic force effect is huddled up in b change gear axle, the b change gear axle is in idling conditions;With commutation Break-in scroll key is installed on the every corresponding change gear axle of end position of body;Described break-in scroll key and break-in Be respectively equipped with the consistent cylindrical keys body of gear shaft holes height dimension identical radiused cross-section upper, Lower key section, the camber of described radiused cross-section are more than the radius of break-in scroll key, and the top of upper key section is worn The break-in roll keyway that crosses in Upper shaft sleeve and change gear axle is fixed on upper end cover;The bottom of lower key section passes through Break-in roll keyway in Lower shaft sleeve and change gear axle is fixed on bottom end cover;The stage casing of the break-in scroll key sets There are ratchet head and scroll key spring, described ratchet head connection scroll key spring (roll by one end, described break-in One end of key is connected on change gear axle;The ratchet head of described break-in scroll key is outer with its body that commutates
Circular arc ear one end mutually touches;Ratchet head pressure when the break-in scroll key in positive change gear mechanism In the external circular arc ear one end of corresponding commutator, and the upper and lower key section of the forward direction does not receive a, b break-in tooth The stop of wheel shaft in the hole unidirectional ratchet, the now a change gear idle running of the positive change gear mechanism, So that change gear axle is rotated, the change gear mechanism for causing forward direction does not work;And another side is reverse Change gear mechanism in normal work;Conversely, when the break-in scroll key in reverse change gear mechanism Ratchet head applies pressure to the other end of the external circular arc ear of corresponding commutator, at the same time, this reverse upper, Lower key section do not stopped by unidirectional ratchet in a, b change gear axis hole, now the reverse change gear machine The a change gear idle running of structure, makes change gear axle rotate, causes reverse change gear mechanism not Work;And normal work in the change gear mechanism of the forward direction of another side;By positive and negative two break-in axles On two spring duckbilled key asemblies, the cooperating of two break-in scroll keys and the left and right swing of commutator, Realize the positive and negative break-in function of forward and reverse change gear mechanism;
The profile of described gear box cover, deceleration box and break-in case is diameter identical cylindrical shape;
Being tightly connected respectively using O-ring between described gear box cover, deceleration box, break-in case;
Described spring duckbilled key asembly is made up of duckbilled body, hinge and duckbilled spring, described break-in tooth The groove for accommodating duckbilled body is had in the medial surface of wheel shaft, and described duckbilled body is hinged in groove by hinge, institute The duckbilled body that states is hinged in groove by hinge, and the top of described hinge is hinged in Lower shaft sleeve, hinge In the hinged duckbilled body in bottom, the mouth end of duckbilled body is mutually touched with break-in scroll key lower key section, is realized duckbilled body and is passed through Hinge is moved in groove, installs more than one duckbilled spring between duckbilled body tail end and the groove inwall, each The spring in the hole of one end insertion duckbilled body of duckbilled spring, in the other end insertion groove inwall of duckbilled spring.
CN201310704997.4A 2013-12-18 2013-12-18 The positive and negative change gear axis mechanism of circulating positive and negative break-in speed change vacuum compressor Expired - Fee Related CN103615504B (en)

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CN102777547A (en) * 2012-08-13 2012-11-14 宋嗣新 Positive and negative rotation output conversion device
CN203627678U (en) * 2013-12-18 2014-06-04 大连精功机械设备有限公司 Forward and backward direction changing gear shaft mechanism of circulating-type forward and backward direction and speed changing vacuum compressor

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Publication number Priority date Publication date Assignee Title
CN201339688Y (en) * 2008-12-27 2009-11-04 盐城华旺机械制造有限公司 Positive and reverse rotation shifting mechanism of stubble cleaning cutter shaft of straw returning machine
CN102226450A (en) * 2011-06-13 2011-10-26 张庆鹏 Reciprocating screw vacuum compressor
CN102777547A (en) * 2012-08-13 2012-11-14 宋嗣新 Positive and negative rotation output conversion device
CN203627678U (en) * 2013-12-18 2014-06-04 大连精功机械设备有限公司 Forward and backward direction changing gear shaft mechanism of circulating-type forward and backward direction and speed changing vacuum compressor

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