CN106840277A - A kind of volume spinner flowmeter - Google Patents

A kind of volume spinner flowmeter Download PDF

Info

Publication number
CN106840277A
CN106840277A CN201510896657.5A CN201510896657A CN106840277A CN 106840277 A CN106840277 A CN 106840277A CN 201510896657 A CN201510896657 A CN 201510896657A CN 106840277 A CN106840277 A CN 106840277A
Authority
CN
China
Prior art keywords
volume
pair
noncircular
curve
gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510896657.5A
Other languages
Chinese (zh)
Inventor
徐天宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Chentong Telecommunications Equipment Factory
Original Assignee
Changzhou Chentong Telecommunications Equipment Factory
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changzhou Chentong Telecommunications Equipment Factory filed Critical Changzhou Chentong Telecommunications Equipment Factory
Priority to CN201510896657.5A priority Critical patent/CN106840277A/en
Publication of CN106840277A publication Critical patent/CN106840277A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
    • G01F1/05Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by using mechanical effects
    • G01F1/20Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by using mechanical effects by detection of dynamic effects of the fluid flow
    • G01F1/22Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by using mechanical effects by detection of dynamic effects of the fluid flow by variable-area meters, e.g. rotameters

Abstract

A kind of volume spinner flowmeter of a pair of noncircular gears with the rolling contact not slided in reticule is provided.Volume-displacement possesses housing (3) and a pair of the rotors (1,2) that can be rotatably located at centered on axle center (4,5) in housing (3).A pair of rotors (1,2) are using the oval pitch curve itself of the track with contact point in reticule as tooth curve, meet the condition of r1+r2=K=const., r1d θ 1=r2d θ 2, the moving radius of oval pitch curve ri=a/ (1-bcosn θ i) (i=1,2) (wherein, ri (i=1,2) it is moving radius, it is the distance from pivot to oval pitch curve, a is similarity factor, b is flatness, n is the number of sheets, and θ i (i=1,2) are motion angles) represent.

Description

A kind of volume spinner flowmeter
Technical field
The present invention relates to volume-displacement, more particularly, the pitch curve of noncircular gear is directed to use with certainly Body as rotor tooth form volume-displacement.
Background technology
Typically, the track for carrying out the contact point of the circumscribed form of gear tooth of continuous contact is the ring-type of lemniscate type Curve, but the ring between centers center line for flat it is consistent with center line in the case of, as contact point Moved on two centers of gear.Therefore, tooth form turns into the profile that rolling movement is set up, and it corresponds to not The pitch curve of constant speed gear (noncircular gear).
That is, centre distance is that the profile of rolling contact wheel of certain, angular speed than changing in rotation is not rounded Shape curve, the gear right and wrong that the non-circular, curve is set tooth as pitch curve, can reliably transmit Circular gear.Typically transferable tooth form is set on pitch curve.As the tooth form, using involute, Cycloid/trochoid, Novi Ke husband are combined with their tooth form, but all respectively have advantage and disadvantage.
Additionally, using Hypothesis of Single Curve Build Up for example in the screw gear type volume-displacement described in patent document 1 It is a little continuous to contact tooth form.Used as the rotor tooth form of flowmeter, a little continuous contact tooth form passes through the flank of tooth each other Carry out concavo-convex contact and face pressure intensity higher can be expected, and do not enter as the unfavorable pass of flowmeter Phenomenon, so being preferable.But, a little continuous contact tooth form with sine curve gear as representative due to The relation of contact-ratio and be spiral-shaped, if be made up of Hypothesis of Single Curve Build Up in addition, tooth high rate also with 0.785m, That is π m/4 (m:Modulus) it is the limit.This is functionally or in production not as the rotor of flowmeter Profit.
On the other hand, on continuously being contacted as the form of gear tooth and be not sliding contact between tooth form and It is capable of the preferable tooth curve of rolling contact, it may be considered that the pitch curve of noncircular gear.Here, if Want for a kind of pitch curve (rolling contact curve) of the elliptic gear as noncircular gear to be configured to flow The situation of the tooth form of the rotor of meter.In the case, due to without for reliably transmitting the tooth form of rotation, So it is invalid to understand as gear.
The content of the invention
But, carried out in the measuring room for being considered as being accommodated in flowmeter with a pair, by the energy of fluid It is in theory that impartial waiting turns at path position in torque in the case of the rotor of the volume flow gauge for rotating transmission Square transmission switching, the face of opposition side, but if constitute being referred to as the appropriate of apparent backlash there Gap, then can mitigate abnormal engagement, can realize carrying out the tooth form of rolling contact.But conventional Volume-displacement in, without using as described above skill of the tooth form with rolling contact curve as rotor Art thought, is up to the present also not carried out.
The present invention be in view of actual conditions as described above and make, it is therefore an objective to providing a kind of has in indexing The volume-displacement of a pair of noncircular gears of the rolling contact not slided on line.
In order to solve above-mentioned problem, the 1st technical scheme of the invention is a kind of volume-displacement, is in housing Inside it is provided with a pair of volume-displacements of noncircular gear, it is characterised in that above-mentioned a pair of noncircular gears will be The oval pitch curve itself of the track with contact point meets r1+r2=as tooth curve in reticule The condition of K=const.r1d θ 1=r2d θ 2, the moving radius of above-mentioned oval pitch curve are used (wherein, ri (i=1,2) is moving radius to ri=a/ (1-bcosn θ i) (i=1,2), is from pivot To the distance of oval pitch curve, a is similarity factor, and b is flatness, and n is the number of sheets, θ i (i=1, 2) be motion angle) represent, described noncircular gear is made up of metal material, it is described carry out material can Think ferroalloy, or aluminium alloy.
2nd technical scheme is in the 1st technical scheme, it is characterised in that above-mentioned a pair of noncircular gears are winged Fin shape.
3rd technical scheme is in the 1st or the 2nd technical scheme, it is characterised in that when above-mentioned a pair it is non-circular Gear is non-circular with another in the major diameter side of a noncircular gear when waiting path position to be in engagement Gap is provided between the tooth form of the minor axis side of gear.
4th technical scheme is in any one technical scheme of 1 to the 3rd, it is characterised in that above-mentioned a pair Noncircular gear is made up of the noncircular gear of same shape.
5th technical scheme is in any one technical scheme of the 1st to, it is characterised in that make expression above-mentioned The number of sheets n of the above-mentioned formula ri=a/ (1-bcosn θ i) (i=1,2) of the moving radius of oval pitch curve is 6, is made Flatness b is 0.5.
According to the present invention, because a pair of noncircular gears of volume-displacement are not slided in reticule Rolling contact, so excelling in abrasion resistance, further, since tooth high rate can be taken it is larger, so torque Efficiency is higher, additionally, by setting apparent backlash, can avoid abnormal engagement, and can not be by It is spiral-shaped and be made up of joint flash shape.
Brief description of the drawings
Fig. 1 is the figure of the configuration example of the volume-displacement for representing an implementation method for the present invention.
Specific embodiment
Hereinafter, referring to the drawings preferred embodiment illustrating to volume-displacement for the present invention. Fig. 1 is the figure of the configuration example of the volume-displacement for representing an implementation method for the present invention.In figure, 1,2 A pair of rotors that expression is made up of noncircular gear, 3 represent housing, and 4,5 represent rotor 1,2 respectively Axle center, 6 represent the virtual reference circle of rotor 1, and 7 represent the virtual reference circle of rotor 2, and 8 expressions turn The outside circle of son 1,9 represent the outside circle of rotor 2.A pair of rotors 1,2 can be centered on axle center 4,5 Rotatably it is housed in the housing 3 of volume-displacement, described noncircular gear is made up of metal material, The described material that carries out can be ferroalloy, or aluminium alloy.The rotor 1,2 is by joint flash (spur) shape Constitute, with the oval pitch curve itself of the track in the reticule for linking axle center 4,5 with contact point P It is tooth curve, meets following rolling contact conditions.R1+r2=K=const.r1d θ 1= Wherein, r1, r2 are moving radius to r2d θ 2, are the distances from pivot to oval pitch curve, θ 1, θ 2 is motion angle.As rolling contact curve (closed curve) if oval pitch curve moving radius If moving radius are ri, similarity factor is a, flatness is b, the number of sheets is n, motion angle is θ i, then use Following formulas (1) is represented.
Ri=a/ (1-bcosn θ i) (i=1,2) ... (formula 1)
Additionally, major diameter rL, minor axis rS are represented with following formulas (2), formula (3).
RL=a/ (1-b) ... (formula 2)
RS=a/ (1+b) ... (formula 3)
In the case of volume-displacement, due to wanting to make the discharge quantitative change of each rotation many, so the number of teeth is preferred It is to try to less, additionally, in order to improve torque efficiency, it is preferred that Ratio of long radius to short radius (rL/rS) is larger.But, such as Fruit makes the number of teeth tail off, then have the problem that the abnormal engagement that the 2nd interference fringe comes occurs, if becoming Ratio of long radius to short radius Greatly, then the problem of cogged strength deterioration, so needing to take the balance of the number of teeth and Ratio of long radius to short radius.Here, So-called 2nd interference, refer to moved along the track that is given in contact point P midway, contact point P with The substantial part of outer unrelated ground side tooth profile is interfered with each other.

Claims (5)

1. a kind of volume spinner flowmeter, is that a pair of volume-displacements of noncircular gear are provided with housing, Characterized in that, above-mentioned a pair of noncircular gears divide the ellipse of the track with contact point in reticule Line itself write music as tooth curve, r1+r2=K=const.r1d θ 1=r2d θ 2 are met Condition, the moving radius of above-mentioned oval pitch curve with ri=a/ (1-bcosn θ i) (i=1,2) (wherein, Ri (i=1,2) is moving radius, is the distance from pivot to oval pitch curve, and a is similarity factor, B is flatness, and n is the number of sheets, and θ i (i=1,2) are motion angles) represent, described noncircular gear It is made up of metal material, the described material that carries out can be ferroalloy, or aluminium alloy.
2. volume-displacement as claimed in claim 1, it is characterised in that above-mentioned a pair of noncircular gears It is butterfly-like shape.
3. volume spinner flowmeter as claimed in claim 1 or 2, it is characterised in that the pair of not rounded Shape gear is waiting path position in engagement.
4. the volume spinner flowmeter as any one of claims 1 to 3, it is characterised in that described A pair of noncircular gears are made up of the noncircular gear of same shape.
5. the volume spinner flowmeter as any one of Claims 1 to 4, it is characterised in that make table Show the above-mentioned formula ri=a/'s (1-bcosn θ i) (i=1,2) of the moving radius of above-mentioned oval pitch curve Number of sheets n is 6, makes flatness b be 0.5.
CN201510896657.5A 2015-12-04 2015-12-04 A kind of volume spinner flowmeter Pending CN106840277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510896657.5A CN106840277A (en) 2015-12-04 2015-12-04 A kind of volume spinner flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510896657.5A CN106840277A (en) 2015-12-04 2015-12-04 A kind of volume spinner flowmeter

Publications (1)

Publication Number Publication Date
CN106840277A true CN106840277A (en) 2017-06-13

Family

ID=59151569

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510896657.5A Pending CN106840277A (en) 2015-12-04 2015-12-04 A kind of volume spinner flowmeter

Country Status (1)

Country Link
CN (1) CN106840277A (en)

Similar Documents

Publication Publication Date Title
US8425212B2 (en) Positive displacement flowmeter and helical gear
CN107588177A (en) A kind of cycloidal-pin wheel harmonic drive
CN102072308A (en) Bevel gear with combined arc tooth profile curves and involute tooth profile curves
CN104832622A (en) Harmonic reducer of improved structure
CN106840277A (en) A kind of volume spinner flowmeter
CN105221704B (en) The raising method of the registration of external toothing cycloid gear
WO2017030471A1 (en) Bi-directional pin-cycloidal gearing of two wheels and a mechanism with gear wheels
CN107727178A (en) A kind of volume spinner flowmeter
CN106523632B (en) A kind of male-female engaging circle-arc tooth wheel rackwork that nothing is slided relatively
JP6958002B2 (en) Inscribed meshing planetary gear mechanism
CN101925803B (en) Positive displacement flowmeter
CN109307054A (en) A kind of segmentation correction method of RV Key Part of Cycloid Cam Planetary Speed Reducer and its flank profil
CN204900698U (en) Interior cycloid reducer
CN105041984B (en) It is single-row to subtract speed change integration rolling free gear mechanism
JP2021521400A (en) Power transmission device
CN106438850B (en) The enveloping worm drive pair of multiple tooth point gearing
CN105202151B (en) The raising method of the registration of internal messing cycloid gear
CN103206522A (en) Decentralizing device for speed reducer
CN203979325U (en) Logarithmic spiral gear
CN210106521U (en) Non-backlash roller enveloping worm gearing mechanism
CN203223543U (en) Eccentric device for reducer
Alipiev et al. Asymmetric involute-lantern meshing formed by identical spur gears with a small number of teeth
CN105065584A (en) Hypocycloid speed reducer
CN205877101U (en) Gyration bridle
CN104154210A (en) Logarithmic spiral gear

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170613

WD01 Invention patent application deemed withdrawn after publication