CN205638919U - Complete glossy claw formula rotor - Google Patents

Complete glossy claw formula rotor Download PDF

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Publication number
CN205638919U
CN205638919U CN201620440651.7U CN201620440651U CN205638919U CN 205638919 U CN205638919 U CN 205638919U CN 201620440651 U CN201620440651 U CN 201620440651U CN 205638919 U CN205638919 U CN 205638919U
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China
Prior art keywords
point
curve
circle
pawl
circular arc
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CN201620440651.7U
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Chinese (zh)
Inventor
庞晓峰
刘强
王君
刘瑞青
崔锋
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China University of Petroleum Beijing CUPB
China University of Petroleum UPC East China
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China University of Petroleum UPC East China
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Abstract

The utility model discloses a complete glossy claw formula rotor, its rotor molded lines comprises 9 sections curves: circular arc IA at the bottom of equidistant curve EF, pitch circle circular arc FG, end claw point circular arc GH, back grip arm equidis tant curve of prolate epicycloid HI and the claw of fore paw arm equidis tant curve of prolate epicycloid AB, fore paw point circular arc BC, claw tip circle arc CD, back grip point circular arc DE, short width of cloth epicycloid, connection between the looks varied curve all is smooth and connects, does not have rough connection dot OR cusp, has effectively avoided easy production wearing and tearing, deformation and stress concentration's region, 2 correct meshing can be realized to the individual claw formula rotor of making incorgruous pair synchronous rotary motion, can improve sealing performance, mechanical properties, the meshing performance of claw formula rotor effectively, clearance volume has been reduced to can not produce local high pressure in mixing process, can effectively reduce the consumption of claw formula vacuum pump, show the work efficiency who improves claw formula vacuum pump, have important meaning to the development of claw formula vacuum pump.

Description

The most smooth a kind of claw rotor
Technical field
This utility model relates to claw vacuum pump, it is adaptable to a kind of the most smooth claw rotor of claw vacuum pump.
Background technology
Claw vacuum pump belongs to the one in positive-displacement vacuum pump, has dry type oil-free, simple and compact for structure, pumping speed is big Advantage.Claw rotor is the critical component of claw vacuum pump;At work, identical by 2 shapes and intermeshing claw The synchronization incorgruous dual AC power motion of rotor, makes the change of the volume generating period of working chamber, completes the suction to gas, compression And discharge process.
The meshing characteristic of molded lines of rotor directly decides the service behaviour of claw rotor, and conventional claw-type rotor profile is by 3 Section cycloid and 3 sections of circular arcs are constituted, and in order to improve its service behaviour, Chinese patent (patent No.: ZL201110308963.4) proposes A kind of new claw rotor, the molded line of this claw rotor is made up of the equidistant curve of 5 sections of circular arcs and 3 sections of cycloids, it is achieved that pawl Engaging of point circular arc and cycloid equidistant curve, and being smoothly connected of pawl point circular arc and cycloid and pawl tip circle arc, but still deposit In following shortcoming: 1. all there is cusp with pitch circle circular arc FG junction and cycloid GH with pitch circle circular arc FG junction at pawl back of the body EF Or rough junction point, and at cusp, it is easy to produce stress collection neutralizes deformation;2. left rotor pawl back of the body EF and right side turn Sub-pawl back of the body ef in the course of the work and is not involved in engagement, causes sealing poor, can produce bigger leakage, be substantially reduced claw The work efficiency of vacuum pump.Chinese patent (publication number: CN104929942A) proposes the claw rotor of a kind of full engagement, this pawl The molded line of formula rotor is made up of the envelope of 5 sections of circular arcs, the equidistant curve of 2 sections of cycloids, 1 section of straightway and 1 section of straightway, it is achieved Make the correct engagement synchronizing between the claw rotors of incorgruous dual AC power motion for 2;But this claw rotor does not realize it Whole between molded lines of rotor are smoothly connected, however it remains rough junction point, and the envelope GH of line segment is equidistant bent with cycloid The junction point H of line HI is rough junction point.
Utility model content
This utility model is in order to solve the problems referred to above, it is proposed that the most smooth a kind of claw rotor, at the pawl back of the body, uses short Pitch circle circular arc FG is smoothly connected by epicycloidal equidistant curve EF with rear solid end point circular arc DE;At pawl point, use end pawl Epicycloidal for rear solid end brachium equidistant curve HI is smoothly connected by point circular arc GH with pitch circle circular arc FG;Make outside short width simultaneously Equidistant curve EF of cycloid, end pawl point circular arc GH can realize correct engagement, resulting in one and are capable of correct engagement , the most smooth claw rotor.A kind of the most smooth claw rotor proposed eliminate existing claw rotor exist cusp or The defect of rough point, it is to avoid easy abrasion occur and is easily generated the region that stress is concentrated, is effectively improved claw rotor Mechanical property, meshing performance and sealing property.
The most smooth a kind of claw rotor, its molded line includes 9 sections of curves, is followed successively by: pitch circle circular arc FG, end pawl point circular arc Circular arc IA, epicycloidal equidistant curve AB of fore paw brachium, fore paw at the bottom of GH, epicycloidal equidistant curve HI of rear solid end brachium, pawl Point circular arc BC, pawl tip circle arc CD, rear solid end point circular arc DE and equidistant curve EF of curtate epicycloid, the most smooth between adjacent curve Connect, there is not rough junction point;2 complete smooth claw rotors (501) are identical with the molded line of (502) simultaneously, and Work is capable of correct engagement, epicycloidal equidistant curve AB of fore paw brachium in complete smooth claw rotor (501), front Pawl point circular arc BC, pawl tip circle arc CD, rear solid end point circular arc DE, equidistant curve EF of curtate epicycloid, pitch circle circular arc FG, end pawl point circle Circular arc IA at the bottom of arc GH, epicycloidal equidistant curve HI of rear solid end brachium, pawl, respectively with complete smooth claw rotor (502) in before Circular arc ia, the epicycloidal equidistant curve of rear solid end brachium at the bottom of pawl point circular arc bc, epicycloidal equidistant curve ab of fore paw brachium, pawl Hi, end pawl point circular arc gh, pitch circle circular arc fg, equidistant curve ef of curtate epicycloid, rear solid end point circular arc de, pawl tip circle arc cd can Realize correct engagement.
The most smooth a kind of claw rotor, the feature of its molded lines of rotor is as follows:
1. circle (3), prolate epicycloid (4) and curtate epicycloid at the bottom of pawl tip circle (1), pitch circle (2), pawl are generated by below equation (5), the equation of each curve is:
The equation of pawl tip circle (1):
The equation of pitch circle (2):
The equation of circle (3) at the bottom of pawl:
The equation of prolate epicycloid (4):
The equation of curtate epicycloid (5):
2. by prolate epicycloid (4) pair-wise offset R laterally4, curve after skew turns clockwise γ angle around initial point O Degree, obtains the place curve (6) of epicycloidal equidistant curve AB of fore paw brachium, epicycloidal equidistant curve AB of fore paw brachium Place curve (6) and pawl at the bottom of circle (3) tangent, its point of contact is A;By prolate epicycloid (4) pair-wise offset 2R laterally4, skew After curve turn clockwise γ angle around initial point O, with initial point O as the center of circle, radius is as R1-R4Circle intersect, with its intersection point be The center of circle is R as radius4Fore paw point circle (7), the institute of fore paw point circle (7) simultaneously equidistant curve AB epicycloidal with fore paw brachium Tangent at curve (6) and pawl tip circle (1), its point of contact is respectively as follows: B, C, obtain epicycloidal equidistant curve AB of fore paw brachium and Fore paw point circular arc BC;
3. the place curve (6) of epicycloidal equidistant curve AB of fore paw brachium turns clockwise α angle around initial point O, To the place curve (8) of epicycloidal equidistant curve HI of rear solid end brachium, the institute of epicycloidal equidistant curve HI of rear solid end brachium Tangent at circle (3) at the bottom of curve (8) with pawl, its point of contact is I point;Place curve by epicycloidal for rear solid end brachium equidistant curve HI (8) pair-wise offset R laterally5, curve after skew with initial point O as the center of circle, radius is as R2-R5Circle intersect, with its intersection point be The center of circle is R as radius5End pawl point circle (9), the institute of end pawl point circle (9) simultaneously equidistant curve HI epicycloidal with rear solid end brachium Tangent at curve (8) and pitch circle (2), its point of contact is respectively as follows: G, H, pawl point circular arc GH, rear solid end brachium are epicycloidal etc. on earth Away from circular arc IA at the bottom of curve HI and pawl;
4. by curtate epicycloid (5) to inner side pair-wise offset R4, the curve after skew rotates alpha+beta+γ counterclockwise around initial point O Angle obtains the place curve (10) of equidistant curve EF of curtate epicycloid, the place curve of equidistant curve EF of curtate epicycloid (10) tangent with pawl tip circle (1), its point of contact is F, obtains pitch circle circular arc FG;Fore paw point circle (7) rotation alpha angle counterclockwise is obtained Rear solid end point circle (11), rear solid end point circle (11) simultaneously with place curve (10) and the pawl tip circle of equidistant curve EF of curtate epicycloid (1) tangent, its point of contact is respectively as follows: E, D, obtains pawl tip circle arc CD, rear solid end point circular arc DE and equidistant curve EF of curtate epicycloid;
Above: t angle parameter, rad;R1Pawl top arc radius, mm;R2Pitch circle arc radius, mm;R3At the bottom of pawl Arc radius, mm;R4Pawl point arc radius, mm front and back;R5End pawl point arc radius, mm;α, beta, gamma is angle, rad.
A kind of claw vacuum pump, uses a kind of the most smooth claw rotor proposed.
A kind of claw compressor, uses a kind of the most smooth claw rotor proposed.
A kind of claw decompressor, uses a kind of the most smooth claw rotor proposed.
To achieve these goals, this utility model adopts the following technical scheme that
Claw rotor synchronizes the motion of incorgruous dual AC power at work, according to the conjugation theory of engagement of molded line, determines at this The equidistant curve of the cycloid being meshed with circular arc under motion mode and relative position thereof, it is achieved being smoothly connected of circular arc and circular arc, Being smoothly connected of the equidistant curve of circular arc and cycloid, obtains the molded line of complete smooth claw rotor, and is capable of at work turning Correct engagement between subtype line, thus improve the combination property of claw rotor.
The most smooth a kind of claw-type rotor profile is made up of the equidistant curve of 6 sections of circular arcs and 3 sections of cycloids, from pitch circle start by Counterclockwise it is followed successively by: circle at the bottom of pitch circle circular arc FG, end pawl point circular arc GH, epicycloidal equidistant curve HI of rear solid end brachium, pawl Arc IA, equidistant curve AB of fore paw arm cycloid, fore paw point circular arc BC, pawl tip circle arc CD, rear solid end point circular arc DE and curtate epicycloid Equidistant curve EF;The equidistant curve of curtate epicycloid (5), with initial point O as center of rotation, rotates alpha+beta+γ angle counterclockwise and obtains To equidistant curve EF of curtate epicycloid, the equidistant curve of prolate epicycloid (4), with initial point O as center of rotation, turns clockwise Epicycloidal equidistant curve HI of rear solid end brachium is obtained after γ angle;Make to put outside pawl tip circle arc CD, rear solid end point circular arc DE, short width It is smoothly connected between equidistant curve EF and the pitch circle circular arc FG of line;Make pitch circle circular arc FG, end pawl point circular arc GH, rear solid end brachium It is smoothly connected between epicycloidal equidistant curve HI;Realize between claw-type rotor profile whole is smoothly connected, and does not exist not It is smoothly connected a little.
The beneficial effects of the utility model are:
Connection between the adjacent curve of a kind of the most smooth claw rotor proposed is all to be smoothly connected, and does not exists Rough junction point or cusp;Avoid and easily produce the region that abrasion, deformation and stress are concentrated;2 works synchronize incorgruous It is capable of correct engagement between the molded line of the claw rotor of dual AC power, is effectively improved the mechanical property of claw rotor, nibbles Close performance, sealing property;Reduce the clearance volume of claw rotor, and partial high pressure, energy will not be produced in mixed process Enough power consumptions effectively reducing claw vacuum pump, significantly improve the work efficiency of claw vacuum pump, and the development to claw vacuum pump has There is important meaning.
Accompanying drawing explanation
Fig. 1 is existing claw-type rotor profile figure.
Fig. 2 is the work engagement figure of existing 2 claw rotors.
Fig. 3 is the molded lines of a kind of the most smooth claw rotor proposed.
Fig. 4 is the generation figure of the molded line of a kind of the most smooth claw rotor proposed.
Fig. 5 is the engagement figure between a kind of the most smooth claw rotor proposed.
Fig. 6 is the engagement figure between a kind of the most smooth claw rotor proposed when different angles.
In figure: R1Pawl top arc radius;R2Pitch circle arc radius;R3Arc radius at the bottom of pawl;R4Pawl point circle front and back Arc radius;R5End pawl point arc radius;201,202 existing claw rotor;501,502 claw rotor newly proposed; 1 pawl tip circle;2 pitch circles;Circle at the bottom of 3 pawls;4 prolate epicycloids, 5 curtate epicycloids;6 fore paw brachiums are epicycloidal Equidistant curve, the 8 epicycloidal equidistant curves of rear solid end brachium, the equidistant curve of 10 curtate epicycloids;7 fore paw point circles, 9 end pawl point circles, 11 rear solid end point circles;α, β, γ angle.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, existing claw-type rotor profile is made up of, from cycloid the equidistant curve of 5 sections of circular arcs and 3 sections of cycloids Equidistant curve starts to be followed successively by counterclockwise: equidistant curve AB of cycloid, fore paw point circular arc BC, pawl tip circle arc CD, rear solid end Circular arc HA at the bottom of point circular arc DE, equidistant curve EF of cycloid, pitch circle circular arc FG, equidistant curve GH of cycloid, pawl;Wherein pitch circle circular arc Equidistant curve EF of FG and cycloid and 2 junction point F points of GH and G point are rough point, i.e. cusp.
As in figure 2 it is shown, be the work engagement figure of existing 2 claw rotors;The molded line of 2 claw rotors builds complete phase With, rotate against 2 rotors of the certain angle that staggers and carry out synchronizing the motion of incorgruous dual AC power, it is achieved correct between molded lines of rotor Engagement.Circular arc HA at the bottom of equidistant curve AB of the cycloid of (201), pawl in (a) figure, cycloid equidistant curve GH respectively with (202) Fore paw point circular arc bc, pawl tip circle arc cd, rear solid end point circular arc de are meshed;The fore paw point circular arc BC of (201), pawl tip circle in (b) figure Arc CD, rear solid end point circular arc DE respectively with equidistant curve ab of cycloid of (202), pawl at the bottom of circular arc ha, the equidistant curve gh phase of cycloid Engagement;But equidistant curve EF of the cycloid in claw rotor (201) and the cusp g in claw rotor (202) also are not involved in nibbling Close.
As it is shown on figure 3, the molded lines of a kind of the most smooth claw rotor by being proposed, its molded line includes 9 sections of curves, depends on Secondary it is: circular arc IA, fore paw brachium at the bottom of pitch circle circular arc FG, end pawl point circular arc GH, epicycloidal equidistant curve HI of rear solid end brachium, pawl Epicycloidal equidistant curve AB, fore paw point circular arc BC, pawl tip circle arc CD, rear solid end point circular arc DE and curtate epicycloid equidistant bent Line EF, is all smoothly connected between adjacent curve, there is not rough junction point;Improve the combination property of claw rotor.
As shown in Figure 4, the generation figure of the molded line of a kind of the most smooth claw rotor by being proposed, the spy of its molded lines of rotor Levy as follows:
1., as shown in Fig. 4 (a), circle (3), prolate epicycloid at the bottom of pawl tip circle (1), pitch circle (2), pawl is generated by below equation (4) and curtate epicycloid (5), the equation of each curve is:
The equation of pawl tip circle (1):
The equation of pitch circle (2):
The equation of circle (3) at the bottom of pawl:
The equation of prolate epicycloid (4):
The equation of curtate epicycloid (5):
2. as shown in Fig. 4 (b), by prolate epicycloid (4) pair-wise offset R laterally4, the curve after skew is suitable around initial point O Hour hands rotate γ angle, obtain the place curve (6) of epicycloidal equidistant curve AB of fore paw brachium, fore paw arm prolate epicycloid Equidistant curve AB place curve (6) and pawl at the bottom of circle (3) tangent, its point of contact is A;By the most equidistant for prolate epicycloid (4) Skew 2R4, curve after skew turns clockwise γ angle around initial point O, with initial point O as the center of circle, radius is as R1-R4Round phase Hand over, make radius as R with its intersection point for the center of circle4Fore paw point circle (7), fore paw point circle (7) is simultaneously the most epicycloidal with fore paw brachium Place curve (6) and the pawl tip circle (1) of equidistant curve AB are tangent, and its point of contact is respectively as follows: B, C, obtains fore paw arm prolate epicycloid Equidistant curve AB and fore paw point circular arc BC;
3., as shown in Fig. 4 (b), the place curve (6) of epicycloidal equidistant curve AB of fore paw brachium is clockwise around initial point O Rotation alpha angle, obtains the place curve (8) of epicycloidal equidistant curve HI of rear solid end brachium, and rear solid end brachium is epicycloidal At the bottom of place curve (8) away from curve HI and pawl, circle (3) is tangent, and its point of contact is I point;By epicycloidal for rear solid end brachium equidistant curve Place curve (8) the pair-wise offset R laterally of HI5, curve after skew with initial point O as the center of circle, radius is as R2-R5Round phase Hand over, make radius as R with its intersection point for the center of circle5End pawl point circle (9), end pawl point circle (9) is simultaneously the most epicycloidal with rear solid end brachium Place curve (8) and the pitch circle (2) of equidistant curve HI are tangent, and its point of contact is respectively as follows: G, H, obtain pawl point circular arc GH, rear solid end arm on earth Circular arc IA at the bottom of equidistant curve HI of prolate epicycloid and pawl;
4. as shown in Fig. 4 (b), by curtate epicycloid (5) to inner side pair-wise offset R4, the curve after skew is inverse around initial point O Hour hands rotate the place curve (10) that alpha+beta+γ angle obtains equidistant curve EF of curtate epicycloid, the equidistant song of curtate epicycloid The place curve (10) of line EF is tangent with pawl tip circle (1), and its point of contact is F, obtains pitch circle circular arc FG;By fore paw point circle (7) inverse time Pin rotation alpha angle obtains rear solid end point circle (11), and rear solid end point circle (11) is simultaneously bent with the place of equidistant curve EF of curtate epicycloid Line (10) and pawl tip circle (1) are tangent, and its point of contact is respectively as follows: E, D, obtain putting outside pawl tip circle arc CD, rear solid end point circular arc DE and short width Equidistant curve EF of line;
Above: t angle parameter, rad;R1Pawl top arc radius, mm;R2Pitch circle arc radius, mm;R3At the bottom of pawl Arc radius, mm;R4Pawl point arc radius, mm front and back;R5End pawl point arc radius, mm;α, beta, gamma is angle, rad.
As it is shown in figure 5, by the engagement figure between a kind of the most smooth claw rotor that proposed;2 claw-type rotor profiles Building identical, 2 rotors rotating against the certain angle that staggers carry out synchronizing the motion of incorgruous dual AC power, it is achieved molded lines of rotor Between at a fully engaged.Circular arc IA, rear solid end brachium at the bottom of epicycloidal equidistant curve AB of fore paw brachium of (501), pawl in (a) figure Epicycloidal equidistant curve HI, end pawl point circular arc GH respectively with the fore paw point circular arc bc of (502), pawl tip circle arc cd, rear solid end point Circular arc de, equidistant curve ef of curtate epicycloid are meshed;The fore paw point circular arc BC of (501) in (b) figure, pawl tip circle arc CD, after Pawl point circular arc DE, curtate epicycloid equidistant curve EF respectively with epicycloidal equidistant curve ab of fore paw brachium, the pawl of (502) End circular arc ia, epicycloidal equidistant curve hi of rear solid end brachium, end pawl point circular arc gh are meshed;Figure realizes between each segment type line Correct engagement.
As shown in Figure 6, by engagement figure when different angles between a kind of the most smooth claw rotor that proposed, (a) ~angle of eccentricity corresponding to each neighbor map is staggered 10 ° in (i) figure;I.e. (a) figure turns clockwise 10 ° to (b) figure left rotor, Right rotor rotates 10 ° counterclockwise;B () figure turns clockwise 10 ° to (c) figure left rotor, right rotor rotates counterclockwise 10°;By that analogy;In (a) figure, left rotor pitch circle circular arc FG engages each other with right rotor pitch circle circular arc fg;(b) figure In, the end pawl point circular arc GH of left rotor engages each other with equidistant curve ef of the curtate epicycloid of right rotor;At (c) and D, in () figure, epicycloidal equidistant curve AB of fore paw brachium of left rotor is meshed with the fore paw point circular arc bc of right rotor, The end pawl point circular arc GH of left rotor engages each other with equidistant curve ef of the curtate epicycloid of right rotor;At (e) and (f) figure In, epicycloidal equidistant curve AB of fore paw brachium of left rotor is meshed with the fore paw point circular arc bc of right rotor, left side Circular arc AI at the bottom of the pawl of rotor is meshed with the pawl tip circle arc cd of right rotor, and the rear solid end brachium of left rotor is epicycloidal equidistantly Curve HI is meshed with the rear solid end point circular arc de of right rotor, outside the end pawl point circular arc GH of left rotor is with the short width of right rotor Equidistant curve ef of cycloid engages each other;In (g) figure, equidistant curve EF of the curtate epicycloid of left rotor and right rotor End pawl point circular arc gh be meshed, equidistant curve ef of the end pawl point circular arc GH of left rotor and the curtate epicycloid of right rotor Engage each other;In (h) and (i) figure, equidistant curve EF of the curtate epicycloid of left rotor is round with the end pawl point of right rotor Arc gh is meshed, and the rear solid end point circular arc DE of left rotor nibbles with rear solid end brachium the epicycloidal equidistant curve hi phase of right rotor Close, the pawl tip circle arc CD of left rotor is meshed with circular arc ai at the bottom of the pawl of right rotor, the fore paw point circular arc BC of left rotor and Epicycloidal equidistant curve ab of fore paw brachium of right rotor is meshed.
Although detailed description of the invention of the present utility model is described by the above-mentioned accompanying drawing that combines, but not new to this practicality The restriction of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability Field technique personnel need not to pay various amendments or deformation that creative work can make still at protection model of the present utility model Within enclosing.

Claims (5)

1. a complete smooth claw rotor, its molded line includes 9 sections of curves, is followed successively by: pitch circle circular arc FG, end pawl point circular arc GH, Circular arc IA, epicycloidal equidistant curve AB of fore paw brachium, fore paw point circle at the bottom of epicycloidal equidistant curve HI of rear solid end brachium, pawl Arc BC, pawl tip circle arc CD, rear solid end point circular arc DE and equidistant curve EF of curtate epicycloid, whole smooth companies between adjacent curve Connect, there is not rough junction point;It is characterized in that: 2 complete smooth claw rotors (501) are identical with the molded line of (502), and It is capable of correct engagement at work, epicycloidal equidistant curve AB of fore paw brachium in complete smooth claw rotor (501), Fore paw point circular arc BC, pawl tip circle arc CD, rear solid end point circular arc DE, equidistant curve EF of curtate epicycloid, pitch circle circular arc FG, end pawl point Circular arc IA at the bottom of circular arc GH, epicycloidal equidistant curve HI of rear solid end brachium, pawl, respectively with in complete smooth claw rotor (502) Circular arc ia, the epicycloidal equidistant song of rear solid end brachium at the bottom of fore paw point circular arc bc, epicycloidal equidistant curve ab of fore paw brachium, pawl Line hi, end pawl point circular arc gh, pitch circle circular arc fg, equidistant curve ef of curtate epicycloid, rear solid end point circular arc de, pawl tip circle arc cd energy Enough realize correct engagement.
The most smooth a kind of claw rotor the most as described in claim 1, the feature of its molded lines of rotor is as follows:
1. circle (3), prolate epicycloid (4) and curtate epicycloid (5) at the bottom of pawl tip circle (1), pitch circle (2), pawl are generated by below equation, The equation of each curve is:
The equation of pawl tip circle (1):
The equation of pitch circle (2):
The equation of circle (3) at the bottom of pawl:
The equation of prolate epicycloid (4):
The equation of curtate epicycloid (5):
2. by prolate epicycloid (4) pair-wise offset R laterally4, curve after skew turns clockwise γ angle around initial point O, obtains The place curve (6) of epicycloidal equidistant curve AB of fore paw brachium, the place of epicycloidal equidistant curve AB of fore paw brachium At the bottom of curve (6) and pawl, circle (3) is tangent, and its point of contact is A;By prolate epicycloid (4) pair-wise offset 2R laterally4, song after skew Line turns clockwise γ angle around initial point O, with initial point O as the center of circle, radius is as R1-R4Circle intersect, with its intersection point for the center of circle make Radius is R4Fore paw point circle (7), the place curve of fore paw point circle (7) simultaneously equidistant curve AB epicycloidal with fore paw brachium And pawl tip circle (1) is tangent (6), its point of contact is respectively as follows: B, C, obtains epicycloidal equidistant curve AB of fore paw brachium and fore paw point Circular arc BC;
3. the place curve (6) of epicycloidal equidistant curve AB of fore paw brachium turns clockwise α angle around initial point O, after obtaining The place curve (8) of epicycloidal equidistant curve HI of pawl brachium, the place of epicycloidal equidistant curve HI of rear solid end brachium is bent At the bottom of line (8) and pawl, circle (3) is tangent, and its point of contact is I point;By the place curve (8) of epicycloidal for rear solid end brachium equidistant curve HI Pair-wise offset R laterally5, curve after skew with initial point O as the center of circle, radius is as R2-R5Circle intersect, with its intersection point as circle The heart is R as radius5End pawl point circle (9), the place of end pawl point circle (9) simultaneously equidistant curve HI epicycloidal with rear solid end brachium Curve (8) and pitch circle (2) are tangent, and its point of contact is respectively as follows: G, H, pawl point circular arc GH, rear solid end brachium are epicycloidal equidistantly on earth Circular arc IA at the bottom of curve HI and pawl;
4. by curtate epicycloid (5) to inner side pair-wise offset R4, the curve after skew rotates alpha+beta+γ angle counterclockwise around initial point O Obtain the place curve (10) of equidistant curve EF of curtate epicycloid, the place curve (10) of equidistant curve EF of curtate epicycloid Tangent with pawl tip circle (1), its point of contact is F, obtains pitch circle circular arc FG;Fore paw point circle (7) rotation alpha angle counterclockwise is obtained rear solid end Point circle (11), rear solid end point circle (11) simultaneously with place curve (10) and pawl tip circle (1) phase of equidistant curve EF of curtate epicycloid Cutting, its point of contact is respectively as follows: E, D, obtains pawl tip circle arc CD, rear solid end point circular arc DE and equidistant curve EF of curtate epicycloid;
Above: t angle parameter, rad;R1Pawl top arc radius, mm;R2Pitch circle arc radius, mm;R3Circular arc at the bottom of pawl Radius, mm;R4Pawl point arc radius, mm front and back;R5End pawl point arc radius, mm;α, beta, gamma is angle, rad.
3. a claw vacuum pump, is characterized in that: use the most smooth a kind of claw rotor as claimed in claim 1.
4. a claw compressor, is characterized in that: use the most smooth a kind of claw rotor as claimed in claim 1.
5. a claw decompressor, is characterized in that: use the most smooth a kind of claw rotor as claimed in claim 1.
CN201620440651.7U 2016-05-13 2016-05-13 Complete glossy claw formula rotor Withdrawn - After Issue CN205638919U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105822548A (en) * 2016-05-13 2016-08-03 中国石油大学(华东) Total-smooth claw type rotor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105822548A (en) * 2016-05-13 2016-08-03 中国石油大学(华东) Total-smooth claw type rotor
CN105822548B (en) * 2016-05-13 2018-01-02 中国石油大学(华东) A kind of complete smooth claw rotor

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